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WO2026002368A1 - Improved scented laundry sheets - Google Patents

Improved scented laundry sheets

Info

Publication number
WO2026002368A1
WO2026002368A1 PCT/EP2024/067738 EP2024067738W WO2026002368A1 WO 2026002368 A1 WO2026002368 A1 WO 2026002368A1 EP 2024067738 W EP2024067738 W EP 2024067738W WO 2026002368 A1 WO2026002368 A1 WO 2026002368A1
Authority
WO
WIPO (PCT)
Prior art keywords
acetate
protein
methyl
fragrance
fragrance composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2024/067738
Other languages
French (fr)
Inventor
Thorsten BÖDDEKER
Bennet GRIMM
Nelson ZOMBOU
Nelli LESCHENKO
Jonas MEISEL
Julian Alexander GEORGI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Symrise AG
Original Assignee
Symrise AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Symrise AG filed Critical Symrise AG
Priority to PCT/EP2024/067738 priority Critical patent/WO2026002368A1/en
Priority to PCT/EP2025/067925 priority patent/WO2026003082A1/en
Publication of WO2026002368A1 publication Critical patent/WO2026002368A1/en
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/50—Perfumes
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
    • C11D11/0082—Special methods for preparing compositions containing mixtures of detergents one or more of the detergent ingredients being in a liquefied state, e.g. slurry, paste or melt, and the process resulting in solid detergent particles such as granules, powders or beads
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0039—Coated compositions or coated components in the compositions, (micro)capsules
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/06—Powder; Flakes; Free-flowing mixtures; Sheets
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/50—Perfumes
    • C11D3/502—Protected perfumes
    • C11D3/505—Protected perfumes encapsulated or adsorbed on a carrier, e.g. zeolite or clay

Definitions

  • the objective for this invention was, to provide an improvement of a flexible, porous, dissolvable, scented, solid sheet article for laundry care.
  • laundry sheets that consist of a dissolvable, flexible, porous polymer structure, loaded with laundry detergents, fragrances and optionally other benefit agents are one example to provide a product compliant with these consumer requests.
  • Laundry sheets are a well-known and widely described alternative for powder detergents and liquid detergents.
  • These sheets are made of a water-soluble, non-toxic polymer that is loaded with the right number of detergents and active ingredients. This makes a unit dose use possible, prohibiting an overdosage, which would be a non-sustainable waste and could have the result that a larger amount of detergent residue remains on the clothes after washing. It also prohibits an underdosage, which would result in the laundry not being clean after washing.
  • W02022037093A1 does include the capsule slurry in the wet pre-mixture of the raw materials of the laundry sheet.
  • the patent does include fragrance capsules in general but does also not show a way to receive optimal fragrance performance or information in how to improve the scent given to the laundry by the sheet.
  • W02011014643A1 discloses a porous sheet article comprising a fabric conditioner.
  • the patent does reveal in general capsules and neat perfume which are included among other materials in the article. However, no specific details are given about any consideration that would lead to an improvement or would lessen the impact of fragrance in such an article.
  • W02020147000A1 discloses an invention including a process that improves the manufacturing process of a flexible, dissolvable, solid sheet article. No improvement in the aspect of the performance of the sheet article is mentioned.
  • a first objective of the invention was an enhanced fragrance performance and a high intensity of fragrance on the laundry as improvement of a flexible, porous, dissolvable, scented, solid sheet article.
  • Another preferred objective was, that the improvement should be noticeable on the laundry after using the article according to the invention.
  • the improved article should have a high storage stability without becoming brittle, browned, or corroded by any active ingredient. It should be flexible, yet keep its mechanical stability and integrity of shape, form, and texture over time.
  • a preferred objective is an article that provides a storage stable scent and a good scent performance after storing the article.
  • a further objective of the invention was the improvement of the production process of an improved sheet article with the features described above. It was the objective of this invention to have a manufacturing process of said article that has mild conditions, is energy efficient and wherein no problems of foaming over occur, and no toxic auxiliary materials are needed, preferably using sustainable, biodegradable materials.
  • a flexible, porous, dissolvable, scented, solid sheet article comprising water, a soluble polymer, a surfactant, a moisturizer and a fragrance composition
  • the fragrance composition comprises a fragrance oil, comprising at least one aldehyde preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehyde compounds and/or at least one ester, preferably two esters, more preferably three esters, even more preferably four esters.
  • the flexible, porous, dissolvable, scented, solid sheet article comprises a fragrance composition wherein the fragrance composition consists of neat fragrance composition comprising a fragrance oil, comprising at least one aldehyde preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehydes and/or at least one ester, preferably two esters, more preferably three esters, even more preferably four esters, and/or an encapsulated fragrance composition.
  • the encapsulated fragrance composition(s) is/are selected from the group consisting of matrix encapsulated fragrance compositions, core shell encapsulated fragrance compositions, molecular encapsulated fragrance compositions and combinations thereof wherein core shell encapsulated fragrances are preferred, wherein the fragrance oil of the encapsulated fragrance composition comprises a fragrance oil, comprising at least one aldehyde preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehydes and/or at least one ester, preferably two esters, more preferably three esters, even more preferably four esters.lt is also preferred that the encapsulated fragrance composition of the flexible, porous, dissolvable, scented, solid sheet article comprises a core and a shell, wherein the ratio of core to shell ranges from 95:5 to 70:30, preferably from 95:5 to 80:20, even more preferred from 95:5 to 50:50, wherein the fragrance oil of the encapsulated fragrance composition comprises at least one
  • examples of the shell material of the encapsulated fragrance composition, , included in the flexible, porous, dissolvable, scented, solid sheet article include, but are not limited to polyethylenes, polyamides, polyamines, ployacrylamides, polystyrenes, polyvinylamines, polyvinyl formamides, polyolefins, polyvinylalcohols, polyacrylates, polymethacrylates, polyvinylacrylates, polyisoprenes polyvinylmethyacrylates, aminoplasts, polyisocyanate such as aliphatic polyisocyanates, aromatic polyisocyanates, polyvinylamines, polyvinyl formamides, Polyvinyl pyrrolidone, polyvinyl pyrrolidone co-polymers, polyvinylpyrrolidone vinyl acrylate, polyvinylpyrrolidone methacrylate, polyvinylpyrrolidone ethacrylate, polyvinylpyr
  • silicas silicones, polysiloxane, polypropylene maleic acid, polypropylene maleic acid copolymer, maleic anhydride derivatives, co-polymers of maleic anhydride derivatives, waxes, aminoplasts, (preferred polyureas, polyurethanes, polyureaurethanes, melamineformaldehyde, cross-linked melamine-formaldehyde, urea-formaldehyde, cross-linked urea formaldehyde), styrene butadiene latex, gum Arabic, alginate, sodium alginate, chitosan, casein, pectin, inulin, agar, traganth, carrageen, konjac gum, guar gum, carob bean gum, xanthan gum, paramylon, starches such as potato starch, wheat starch, corn starch, rice starch, tapioca starch, oat starch and modified starches, starch derivatives
  • the aldehydes of the fragrance oil included in the fragrance composition included in the flexible, porous, dissolvable, scented, solid sheet article include, but are not limited to 2,6,10-trimethylundec-9-enal (141-13-9; Adoxal; Farenal); alpha-,3,3-trimethyl-cyclohexanemethanolformate (25225-08-5; Aphermate); 4-(1, 1-dimethylethyl)-benzenepropanal (18127-01-0; Bourgeonal); 6-methoxy-2,6-dimethyloctanal (929253-05-4; Calypsone); 4-methoxy-alpha-methyl-benzenepropanal (5462-06-6; Canthoxal); a,2,2,6-tetramethylcyclohexenebutanal (65405-84-7; Cetonal); 8,8-dimethyl- 1 ,2,3,4,5,6,7,8-octahydro-2-naphthaldehyde +
  • esters of the fragrance oil, included in the fragrance composition included in the flexible, porous, dissolvable, scented, solid sheet article include, but are not limited to cis-2-tert-butylcyclohexyl acetate + (2-tert- butylcyclohexyl)-acetate (20298-69-5; 88-41-5; Argumex HC I LC); ethyl 3-methyl-3- phenyloxirane-2-carboxylate (77-83-8; Aldehyde C16 so-called); prop-2-enyl-2- cyclohexyloxyacetate (68901-15-5; Cyclogalbanat); methyl-2,4-dihydroxy-3,6- dimethylbenzoate (4707-47-5; Evernyl); 4-methylpentan-2-yl (E)-but-2-enoate (35206-51-0; Frutinat); ethyl-2-ethyl-6,6-dimethylcycl
  • the fragrance oil included in the fragrance composition included in a flexible, porous, dissolvable, scented solid sheet article comprises from 0,05wt% to 99,5wt%, preferably from 0,1 wt% to 90wt%, more preferably from about 0,15% to about 75wt%, even more preferably from 0,2 to 50wt%, even more preferred 0,5wt% to 35wt%, even more preferred 0,5wt% to 25wt%, most preferred 0,5wt% to 15wt% of esters based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • a fragrance composition for a flexible, porous, dissolvable, scented, solid sheet article that comprises from 1wt% to 99wt%, preferably from 3wt% to 90wt%, more preferably from 5wt% to 85wt%, even more preferred from 7wt% to 80wt% most preferred 8wt% to 75wt% of esters based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • a further preferred embodiment of the invention comprises from 2wt% to 50wt%, preferably from 3wt% to 40wt%, more preferably from 3,5wt% to 35wt%, even more preferred from 4,0wt% to 30wt%, most preferred from 5wt% to 25% of esters based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • a further preferred embodiment of the invention discloses the fragrance composition provided for a flexible, porous, dissolvable, scented, solid sheet article comprising 0,05wt% to 99,5wt%, preferably from 0,1wt% to 90wt%, more preferably from about 0,15% to about 75wt%, even more preferably from 0,2 to 50wt%, even more preferred 0,5wt% to 35wt%, even more preferred 0,5wt% to 25wt%, most preferred 0,5wt% to 15wt% of aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • a fragrance composition for a flexible, porous, dissolvable, scented, solid sheet article that comprises from 1wt% to 99wt%, preferably from 3wt% to 90wt%, more preferably from 5wt% to 85wt%, even more preferred from 7wt% to 80wt% most preferred 8wt% to 75wt% of aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • a further preferred embodiment of the invention comprises from 2wt% to 50wt%, preferably from 3wt% to 40wt%, more preferably from 3,5wt% to 35wt%, even more preferred from 4,0wt% to 30wt%, most preferred from 5wt% to 25% of aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • a further preferred embodiment of the invention discloses the fragrance composition provided for a flexible, porous, dissolvable, scented, solid sheet article comprising 0,05wt% to 99,5wt%, preferably from 0,1wt% to 90wt%, more preferably from about 0,15% to about 75wt%, even more preferably from 0,2 to 50wt%, even more preferred 0,5wt% to 35wt%, even more preferred 0,5wt% to 25wt%, most preferred 0,5wt% to 15wt% of esters and aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • a fragrance composition for a flexible, porous, dissolvable, scented, solid sheet article that comprises from 1wt% to 99wt%, preferably from 3wt% to 90wt%, more preferably from 5wt% to 85wt%, even more preferred from 7wt% to 80wt% most preferred 8wt% to 75wt% of esters and aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • a further preferred embodiment of the invention comprises from 2wt% to 50wt%, preferably from 3wt% to 40wt%, more preferably from 3,5wt% to 35wt%, even more preferred from 4,0wt% to 30wt%, most preferred from 5wt% to 25% of esters and aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • the fragrance composition included in a flexible, porous, dissolvable, scented solid sheet article comprises from 0,01wt% to 50wt%, preferably from 0,02wt% to 30wt%, more preferably from 0,05wt% to 10wt%, most preferably from 0,1 wt% to 5wt% of encapsulated fragrance composition by total weight of said solid sheet article.
  • the fragrance composition included in a flexible, porous, dissolvable, scented, solid sheet article comprises from 0,01wt% to 30wt%, preferably from 0,02wt% to 25wt%, more preferably from 0,03wt% to 15wt%, even more preferred 0,04wt% to 15wt%, most preferred 0,05wt% to 10wt% of encapsulated fragrance by total weight of said solid sheet article.
  • the fragrance composition included in a flexible, porous, dissolvable, scented solid sheet article comprises from 0,01wt% to 50wt%, preferably from 0,02wt% to 30wt%, more preferably from 0,05wt% to 10wt%, most preferably from 0,1 wt% to 5wt% of neat fragrance by total weight of said solid sheet article.
  • the fragrance composition included in a flexible, porous, dissolvable, scented, solid sheet article comprises from 0,01wt% to 30wt%, preferably from 0,02wt% to 25wt%, more preferably from 0,03wt% to 15wt%, even more preferred 0,04wt% to 15wt%, most preferred 0,05wt% to 10wt% of neat fragrance by total weight of said solid sheet article.
  • the fragrance composition included in a flexible, porous, dissolvable, scented solid sheet article comprises from 0,01wt% to 50wt%, preferably from 0,02wt% to 30wt%, more preferably from 0,05wt% to 10wt%, most preferably from 0,1 wt% to 5wt% of encapsulated fragrance composition and neat perfume by total weight of said solid sheet article.
  • the fragrance composition included in a flexible, porous, dissolvable, scented, solid sheet article comprises from 0,01wt% to 30wt%, preferably from 0,02wt% to 25wt%, more preferably from 0,03wt% to 15wt%, even more preferred 0,04wt% to 15wt%, most preferred 0,05wt% to 10wt% of encapsulated fragrance and neat perfume by total weight of said solid sheet article.
  • a further preferred aspect of the invention is disclosing esters included in the fragrance oil included in the fragrance composition that are present in the flexible, porous, dissolvable, scented, solid sheet article in an amount of from about 0,001wt% to about 17wt%, preferably in an amount from about 0,005wt% to about 15wt%, more preferred in an amount from 0,01wt% to about 12wt%, most preferred from about 0,02wt% to about 7,5wt% based on the total weight of the flexible, porous, dissolvable, scented solid sheet article.
  • esters included in the fragrance oil included in the fragrance composition that are present in the flexible, porous, dissolvable, scented, solid sheet article in an amount of from about 0,0,01wt% to about 15wt%, preferably in an amount from about 0,1 wt% to about 10wt%, more preferred in an amount from 0,2wt% to about 5wt% based on the total weight of the flexible, porous, dissolvable, scented solid sheet article.
  • Another preferred aspect of the invention is disclosing aldehydes included in the fragrance oil included in the fragrance composition that are present in the flexible, porous, dissolvable, scented, solid sheet article in an amount of from about 0,001wt% to about 17wt%, preferably in an amount from about 0,005wt% to about 15wt%, more preferred in an amount from 0,01wt% to about 12wt%, most preferred from about 0,02wt% to about 7,5wt% based on the total weight of the flexible, porous, dissolvable, scented solid sheet article.
  • a preferred alternative of the invention discloses aldehydes included in the fragrance oil included in the fragrance composition that are present in the flexible, porous, dissolvable, scented, solid sheet article in an amount of from about 0,01wt% to about 15wt%, preferably in an amount from about 0,1 wt% to about 10wt%, more preferred in an amount from 0,2wt% to about 5wt% based on the total weight of the flexible, porous, dissolvable, scented solid sheet article.
  • a further preferred embodiment of the invention is disclosing esters and aldehydes included in the fragrance oil included in the fragrance composition that are present in the flexible, porous, dissolvable, scented, solid sheet article in an amount of from about 0,001wt% to about 17wt%, preferably in an amount from about 0,005wt% to about 15wt%, more preferred in an amount from 0,01wt% to about 12wt%, most preferred from about 0,02wt% to about 7,5wt% based on the total weight of the flexible, porous, dissolvable, scented solid sheet article.
  • a preferred alternative of the invention discloses esters and aldehydes included in the fragrance oil included in the fragrance composition that are present in the flexible, porous, dissolvable, scented, solid sheet article in an amount of from about 0,01wt% to about 15wt%, preferably in an amount from about 0,1 wt% to about 10wt%, more preferred in an amount from 0,2wt% to about 5wt% based on the total weight of the flexible, porous, dissolvable, scented solid sheet article.
  • Another embodiment of the invention comprises a multilayer structure comprising two or more layers of the flexible, porous, dissolvable, scented, solid sheet article, wherein the flexible, porous, dissolvable, scented, solid sheet article comprises a fragrance composition comprising a fragrance oil, comprising at least one aldehyde preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehyde compounds and/or at least one ester, preferably two esters, more preferably three esters, even more preferably four esters.
  • a further aspect of the present disclosure comprises a process for preparing a flexible, porous, dissolvable, scented, solid sheet article, comprising the steps of: a) providing a wet pre-mixture comprising a water-soluble polymer, preferably a polyvinyl alcohol, a surfactant, a moisturizer, a fragrance composition, and water, b) mixing said pre-mixture without heating c) heating the pre mixture while mixing d) optionally cooling the wet pre-mixture to less than 60°C, preferably less than 40°C, more preferably less than 30°C, even more preferably less than 25°C e) aerating the pre mixture f) forming a sheet g) drying the sheet formed in f) at a temperature from 60°C to 150°C, preferably 70°C to 120°C, more preferred from 80°C to 110°C, most preferred from 90°C to 100°C to form said solid sheet article wherein the fragrance composition comprises a fragrance oil comprising at least one ester and/or
  • the surfactant, provided for the wet pre-mixture in step a) may be added to the mixture directly (purely) or pre-dissolved in water.
  • the surfactant may be dissolved to form a solution of from 99wt% to 50wt% surfactant in water.
  • the fragrance composition provided in the above-mentioned process in step a) for manufacturing a flexible, porous, dissolvable, scented solid sheet article is selected from the group consisting of neat fragrance compositions, encapsulated fragrance compositions and combinations thereof wherein the fragrance composition comprises a fragrance oil, comprising at least one aldehyde preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehydes and/or at least one ester, preferably two esters, more preferably three esters, even more preferably four esters.
  • Disclosed preferred versions of an encapsulated fragrance composition provided in step a) of the mentioned process for manufacturing a flexible, porous, dissolvable, scented, solid sheet article are selected from the group consisting of matrix encapsulated fragrance compositions, core shell encapsulated fragrance compositions consisting of one or more coats, molecular encapsulated fragrance compositions and combinations thereof, wherein core shell encapsulated fragrance compositions are preferred.
  • the fragrance composition provided in the process in step a) for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprises of an encapsulated fragrance composition, provided in a mixture of an encapsulated fragrance composition and water, called a capsule slurry.
  • Said capsule slurry may comprise of a fragrance oil, comprising at least one aldehyde preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehydes and/or at least one ester, preferably two esters, more preferably three esters, even more preferably four esters, a shell material to form the encapsulated fragrance composition and water.
  • the capsule slurry may also comprise a thickening agent and/or it may comprise a preservative agent.
  • thickening agents examples include xanthan gum, diutan gum, cellulose, carboxymethylcellulose and the like.
  • the capsule slurry may comprise of about 20wt% to about 70wt%, preferably about 30wt% to about 60wt%, most preferred about 35wt% to about 55wt% of fragrance oil, from about 1wt% to about 9wt%, preferably from about 2wt% to about 6wt%, most preferred from about 3wt% to about 5wt% of capsule shell material.
  • the capsule slurry may furthermore comprise from about 0,01wt% to about 1wt%, preferably from about 0,05wt% to about 0,5wt% of thickening agent, and from about 0,1 wt% to about 5wt%, preferably from about 0,2wt% to about 2wt% of preservative agent, wherein the fragrance oil comprises at least one aldehyde preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehydes and/or at least one ester, preferably two esters, more preferably three esters, even more preferably four esters.
  • the capsule slurry furthermore comprises water. The sum of the ingredients of the capsule slurry herein described add up to 100%.
  • the fragrance composition, provided in step a) of the process described above comprises an encapsulated fragrance composition, provided as a capsule slurry
  • the amount of capsule slurry, added to the wet pre-mixture ranged from about 0,05wt% to about 10wt%, preferably from about 0,05wt% to about 8wt%, more preferred from about 0,05wt% to about 6wt% of the total weight of the wet pre-mixture.
  • the fragrance composition, provided in step a) of the process described above comprises a neat fragrance
  • the amount of neat fragrance ranges from 0,01wt% to about 10wt%, preferably from about 0,05wt% to about 7wt%, more preferred from about 0,05wt% to about 5wt% of the total weight of the wet pre mixture.
  • the water content of the capsule slurry may amount to from about 20wt% to about 70wt%, preferably from about 30wt% to about 65wt%.
  • the wet pre-mixture of the flexible, porous, dissolvable, scented, solid sheet article may preferably comprise from about 0,1 wt% to about 50wt%, preferably from about 1wt% to about 40wt%, more preferably from about 5wt% to about 30wt%, even more preferably from 8wt% to about 25wt%, most preferred from about 10wt% to about 20wt% of neat perfume by weight of the wet pre mixture.
  • the total amount of water, provided in step a) of the process of forming a wet premixture described above ranges from about 90wt% to about 50wt%, preferably from about 85wt% to about 55wt%, most preferred from about 80wt% to about 60wt%.
  • the wet pre-mixture provided in step a) preferably has a viscosity of from 25 Pa*s to 800 Pa*s, measured at 23°C and 25 s" 1 .
  • the pH of a wet pre mixture for producing a flexible, porous, dissolvable solid sheet article may be adjusted so that a pH value from about 3,0 to 9,0, preferably 3,0 to 8,0, more preferably from 3,0 to 7,0 is obtained.
  • the mixing of the wet pre-mixture in step b) is performed by stirring, preferably with a speed of about 200 rpm to about 5000 rpm, more preferably from about 500 rpm to about 3500 rpm.
  • the heating of wet pre-mixture described in step c) while mixing is done preferably at about the same speed used in step b).
  • the wet pre-mixture in step c) may be heated to a temperature from about 60°C to about 120°C, preferably from about 70°C to about 110°C, more preferably from about 80°C to about 100°C for a time of from about 20 minutes to about 90 minutes.
  • step d) of the process described above for manufacturing a flexible, porous, dissolvable, scented, solid sheet article might be performed without any cooling agent or may comprise a cooling agent such as for example ice.
  • step d) is executed until a temperature is obtained that is not lower than 0°C, preferably not lower than 10°C, more preferably not lower than 15°C.
  • aerating of the wet pre-mixture in step e) is done by stirring, preferably with a speed of from about 400 rpm to about 6000 rpm, more preferably from about 600 rpm to about 4000 rpm. Introducing air into the wet pre-mixture to form a foamy texture, is referred to as aerating.
  • the stability of the foam gained in this step is so high that the foam holds its shape during the drying step g).
  • the density of the wet, aerated pre-mixture in step e) may range from about 0,05 g/ml to about 0,5 g/ml.
  • drying described in step g) may be performed with a heating source from below the sheet, such as, but not limited to, a heating plate, or with a heating source from above the sheet, such as, but not limited to, a heating plate, or with a heating source surrounding the sheet, such as but not limited to, circulating hot air or any combinations thereof.
  • a heating source from below the sheet such as, but not limited to, a heating plate
  • a heating source from above the sheet such as, but not limited to, a heating plate
  • a heating source surrounding the sheet such as but not limited to, circulating hot air or any combinations thereof.
  • the final water content of the flexible, porous, dissolvable, scented, solid sheet article manufactured by the process described above in steps a) to g) has after the drying step g) a remaining water content of from about 0,1wt% to about 10wt%, preferably 0,5wt% to about 8wt% even more preferred from about 1wt% to about 5wt%
  • the fragrance composition provided in the wet pre-mixture consists of a neat fragrance composition and/or encapsulated fragrance compositions, preferably the encapsulated fragrance compositions are selected from the group consisting of matrix encapsulated fragrance compositions, core shell encapsulated fragrance compositions, molecular encapsulated fragrance compositions and compositions and combinations thereof, wherein the core shell encapsulated fragrance compositions are preferred.
  • a further preferred embodiment of the invention discloses a process for manufacturing a flexible, porous, dissolvable, scented, solid sheet article wherein the encapsulated fragrance composition, provided in the wet pre-mixture comprises a core shell encapsulated fragrance composition comprising a core and a shell wherein the ratio of core to shell is 95:5 - 70:30, preferably 95:5 - 80:20.
  • Suitable materials for the shell of the encapsulated fragrance composition provided in the wet pre-mixture in the process for manufacturing a flexible, porous, dissolvable, scented, solid sheet article include, but are not limited to polyethylenes, polyamides, polyamines, ployacrylamides, polystyrenes, polyvinylamines, polyvinyl formamides, polyolefins, polyvinylalcohols, polyacrylates, polymethacrylates, polyvinylacrylates, polyisoprenes polyvinylmethylacrylates, aminoplasts, polyisocyanate such as aliphatic polyisocyanates, aromatic polyisocyanates, polyvinylamines, polyvinyl formamides, Polyvinyl pyrrolidone, polyvinyl pyrrolidone co-polymers, polyvinylpyrrolidone vinyl acrylate, polyvinylpyrrolidone methacrylate, polyvinylpyrrolidone ethacrylate, polyvin
  • silicas silicones, polysiloxane, polypropylene maleic acid, polypropylene maleic acid copolymer, maleic anhydride derivatives, co-polymers of maleic anhydride derivatives, waxes, aminoplasts, (preferred polyureas, polyurethanes, polyureaurethanes, melamineformaldehyde, cross-linked melamine-formaldehyde, urea-formaldehyde, cross-linked urea formaldehyde), styrene butadiene latex, gum Arabic, alginate, sodium alginate, chitosan, casein, pectin, inulin, agar, traganth, carrageen, konjac gum, guar gum, carob bean gum, xanthan gum, paramylon, starches such as potato starch, wheat starch, corn starch, rice starch, tapioca starch, oat starch and modified starches, starch derivatives
  • the aldehydes included in the fragrance oil provided in the fragrance composition provided in the wet pre-mixture in the process for forming a flexible, porous, dissolvable, scented, solid sheet article according to the invention include but are not limited to 2,6,10-trimethylundec-9-enal (141-13-9; Adoxal; Farenal); alpha-,3,3-trimethyl-cyclohexanemethanolformate (25225-08-5; Aphermate); 4-(1, 1- dimethylethyl)-benzenepropanal (18127-01-0; Bourgeonal); 6-methoxy-2,6-dimethyloctanal (929253-05-4; Calypsone); 4-methoxy-alpha-methyl-benzenepropanal (5462-06-6; Canthoxal); a,2,2,6-tetramethylcyclohexenebutanal (65405-84-7; Cetonal); 8,8-dimethyl- 1 ,2,3,4,5,6,7,8
  • esters included in the fragrance oil provided the fragrance composition provided in the wet pre-mixture in the process for forming a flexible, porous, dissolvable, scented, solid sheet article according to the invention include, but are not limited to cis-2-tert-butylcyclohexyl acetate + (2-tert-butylcyclohexyl) acetate (20298-69-5; 88-41-5; Argumex HC I LC); ethyl 3-methyl-3-phenyloxirane-2-carboxylate (77- 83-8; Aldehyde C16 so-called); prop-2-enyl 2-cyclohexyloxyacetate (68901-15-5; Cyclogalbanat); methyl 2,4-dihydroxy-3,6-dimethylbenzoate (4707-47-5; Evernyl); 4- methylpentan-2-yl (E)-but-2-enoate (35206-51-0; Frutinat); ethylcyclohexy
  • the fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprises from about 0,05wt% to about 99,5wt%, preferably from about 0,1 wt% to about 90wt%, more preferably from about 0,15% to about 75wt%, even more preferably from about 0,2 to about 50wt%, even more preferred about 0,5wt% to about 35wt%, even more preferred about 0,5wt% to about 25wt%, most preferred about 0,5wt% to about 15wt% of esters based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • the fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprises from about 1wt% to about 99wt%, preferably from about 3wt% to about 90wt%,, more preferably from about 5wt% to about 85wt%, even more preferred from about 7wt% to about 80wt% most preferred from about 8wt% to about 75wt% of esters based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • the fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprises from about 2wt% to about 50wt%, preferably from about 3wt% to about 40wt%, more preferably from about 3,5wt% to about 35wt%, even more preferred from about 4,0wt% to about 30wt%, most preferred from about 5wt% to about 25% of esters based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • a further preferred embodiment of the invention discloses a fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprising 0,05wt% to 99,5wt%, preferably from about 0,1 wt% to about 90wt%, more preferably from about 0,15% to about 75wt%, even more preferably from about 0,2 to about 50wt%, even more preferred from about 0,5wt% to about 35wt%, even more preferred from about 0,5wt% to about 25wt%, most preferred from about 0,5wt% to about 15wt% of aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • Another preferred embodiment of the invention discloses a fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article that comprises from about 1wt% to about 99wt%, preferably from about 3wt% to about 90wt%, more preferably from about 5wt% to about 85wt%, even more preferred from about 7wt% to about 80wt% most preferred about 8wt% to about 75wt% of aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • a further preferred embodiment of the invention discloses a fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprising from about 2wt% to about 50wt%, preferably from about 3wt% to about 40wt%, more preferably from about 3,5wt% to about 35wt%, even more preferred from about 4,0wt% to about 30wt%, most preferred from about 5wt% to about 25% of aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • a further preferred embodiment of the invention discloses a fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprising from about 0,05wt% to about 99,5wt%, preferably from about 0,1 wt% to about 90wt%, more preferably from about 0,15% to about 75wt%, even more preferably from about 0,2 to about 50wt%, even more preferred about 0,5wt% to about 35wt%, even more preferred about 0,5wt% to about 25wt%, most preferred about 0,5wt% to about 15wt% of esters and aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • Another preferred embodiment of the invention discloses a fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article that comprises from about 1wt% to about 99wt%, preferably from about 3wt% to about 90wt%, more preferably from about 5wt% to about 85wt%, even more preferred from about 7wt% to about 80wt% most preferred about 8wt% to about 75wt% of esters and aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • a further preferred embodiment of the invention discloses a fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprising from about 2wt% to about 50wt%, preferably from about 3wt% to about 40wt%, more preferably from about 3,5wt% to about 35wt%, even more preferred from about 4,0wt% to about 30wt%, most preferred from about 5wt% to about 25% of esters and aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
  • the encapsulated fragrance composition provided for the wet pre-mixture for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprises from about 0,01wt% to about 50wt%, preferably from about 0,02wt% to about 30wt%, more preferably from about 0,05wt% to about 10wt%, most preferably from about 0,1 wt% to about 10wt% of encapsulated fragrance by total weight of said solid sheet article.
  • the fragrance composition included in a flexible, porous, dissolvable, scented, solid sheet article comprises from about 0,01wt% to about 30wt%, preferably from about 0,02wt% to about 25wt%, more preferably from about 0,05wt% to about 15wt%, even more preferred about 0,08wt% to about 15wt%, most preferred about 0,08wt% to about 10wt% of encapsulated fragrance by total weight of said solid sheet article.
  • a flexible, porous, dissolvable, scented, solid sheet article mentioned in this disclosure is equal to the term laundry sheet.
  • laundry sheet For further characteristics of such an article W02022037093A1 is mentioned as a reference for the person skilled in the art if not described differently in this disclosure.
  • a perfume oil or fragrance oil comprises one or more fragrance ingredient(s).
  • a perfume or fragrance oil is formed by at least one odorous component called a fragrance ingredient and might comprise more fragrance ingredients.
  • a fragrance oil may also comprise one or more odourless component(s), that are also defined as fragrance ingredients such as for example, but not limited to solvents. Examples of such solvents included in a fragrance oil may include but are not limited to dipropylenglycole, triethylcitrate, isopopylmyristate, benzylbenzoate, water, triglyceride, and any combinations thereof.
  • neat perfume or neat fragrance means fragrance oil that is not encapsulated in any form, but can be either provided in the wet pre-mixture for forming a flexible, porous, dissolvable, scented, solid sheet article by adding it directly to the wet pre-mixture as described in step a) in the process above, or it is also possible to apply the neat perfume to the flexible, porous, dissolvable, scented sheet article after the drying step described in step d) of the process for manufacturing a flexible, porous, dissolvable, scented, solid sheet article.
  • encapsulated fragrance composition is equal to the term fragrance capsules and is to be understood as a general term, wherein a preferred embodiment of encapsulation included in an encapsulated fragrance composition according to this invention is a core shell encapsulation.
  • a core-shell encapsulated fragrance composition comprises a core, which comprises a fragrance oil according to this invention, and a shell.
  • the core may also be referred to as inner phase.
  • the shell material may also be called wall material or may be referred to as outer phase, and it surrounds the core at least partially.
  • the shell material may also surround the core fully.
  • the shell material may be permeable, semi-permeable or non-permeable. It may comprise one or more layers of one or more shell material(s).
  • the diameter of said PMC may range from about 1 pm to 1000 pm.
  • the thickness of the shell material may range from about 0,5 pm to about 150 pm. Further information might be gained by these literature references: W02022028705A1 and W02020114571A1.
  • ester(s) which are provided in the fragrance composition according to this invention is a fragrance ingredient with at least one functional ester-group.
  • aldehyde(s) which are provided in the fragrance composition according to this invention is a fragrance ingredient with at least one functional aldehyde-group.
  • wet pre-mixture is defined as the mixture of all ingredients provided in the process of manufacturing a flexible, porous, dissolvable, scented, solid sheet article and water.
  • a water-soluble polymer according to this invention included in a flexible, porous, dissolvable, scented solid sheet article may serve as a carrier material and a film former, it may be the structure giving material for other ingredients, preferably active ingredients (e.g., surfactants, emulsifiers, builders, chelates, perfumes, perfume microcapsules, colourants, and the like).
  • active ingredients e.g., surfactants, emulsifiers, builders, chelates, perfumes, perfume microcapsules, colourants, and the like.
  • the wet pre mixture provided for manufacturing a flexible, porous, dissolvable, scented, solid sheet article comprises from about 3% to about 20% preferably about 5% to about 15%, even more preferred about 7% to about 10% by weight of said water-soluble polymer.
  • the water-soluble polymer gives enough support to the flexible, dissolvable, porous, scented, solid sheet article to hold its shape and/or structure given to the polymer in the manufacturing process described in step f) of the process of manufacturing a flexible, porous, dissolvable, scented, solid sheet article, while being nontoxic, environmentally friendly and easy to access and use in a process, described above while at the same time providing a large surface.
  • the water-soluble polymer may be loaded with any ingredients herein described in this disclosure.
  • the water-soluble polymer is present in the flexible, porous, dissolvable, scented, solid sheet article of the present disclosure in an amount ranging from about 5wt% to about 50wt%, preferably from about 8wt% to about 40wt%, more preferably from about 10wt% to about 30wt%, most preferred from about 11wt% to about 25wt% by total weight of the disclosed article.
  • the total amount of the water-soluble polymer, present in the flexible, porous, dissolvable, scented, solid sheet article described in this disclosure is no more than 25wt% by total weight of said sheet article.
  • Suitable water-soluble polymers for a flexible, porous, dissolvable, scented solid sheet article according to this disclosure may include, but are not limited to synthetic polymers including polyvinylalcohols, polyvinylpyrrolidones, polyalkylene oxides, polyacrylates, caprolactames, polymethacrylates, polymethylmethacrylates, polyacrylamides, polymethacrylamides, polydimethylacrylamides, polyethylene glycol monomethacrylates, copolymers of acrylic acid and methyl acrylate, polyurethanes, polycarboxylic acids, polyvinylacetates, polyesters, polyamides, polyamines, polyethyleneimines, maleic - I (acrylate or methacrylate) copolymers, copolymers of methylvinyl ether and of maleic anhydride, copolymers of vinyl acetate and crotonic acid, copolymers of vinylpyrrolidone and of vinyl acetate or caprolactam, vinyl pyrrolidine and
  • the water soluble polymer of the present disclosure may also be selected from naturally sourced polymers including those of plant origin examples of which include karaya gum tragacanth gum, gum Arabic, ace mannan, kojac mannan, aracia gum, gum ghatti, whey protein isolate, and soy protein isolate; seed extracts including guar gum, locust bean gum, quince seed, and psyllium seed; Seaweed extracts such as carrageenan, alginates, and agar agar; fruit extracts (e.g.
  • pectines those of microbial origin including xanthan gum, gellan gum, pullulan, hyaluronic acid, chondroitin sulfate, and dextran; and those of animal origin including casein, gelatin, keratin hydrolysates, sulfonic keratins, collagen, glutelin, glucagons, plast, zein, and shellac.
  • Modified natural polymers can also be used as water soluble polymers in the present disclosure.
  • Suitable modified natural polymers include, but are not limited to, cellulose derivatives such as hydroxypropylmethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, methylcellulose, hydroxypopylcellulose, ethylcellulose, carboxymethylcellulose, cellulose acetate phthalate, nitrocellulose and other cellulose ethers/esters and guar derivatives such as hydroxypropyl guar.
  • Preferred water-soluble polymers of the present disclosure include polyvinyl alcohols, polyvinyl pyrrolidones, polyalkene oxides, starch and starch derivatives, pullulan, gelatin, hydroxypropylmethylcelluloses, methylcelluloses, and carboxymethylcelluloses. More preferred water-soluble polymers of the present disclosure include polyvinyl alcohols, and hydroxypropylmethylcelluloses.
  • Most preferred water-soluble polymers of the present disclosure are polyvinyl alcohols characterized by a degree of hydrolysis ranging from about 40% to about 100%, preferably from about 50% to about 95%, more preferably from about 65% to about 92%, most preferably from about 70% to about 90%.
  • polyvinyl alcohols include those from Celanese Corporation (Texas USA) under the trade name SELVOL including, but not limited to SELVOL 523, SELVOL 530, SELVOL 540, SELVOL 518, SELVOL 513, SELVOL 508, SELVOL 504; those from Kuraray Europe GmbH (Frankfurt, Germany) under the tradename POVAL, and PVA 1788 (also referred to as PVA BP17) commercially available from various suppliers and combinations thereof.
  • SELVOL including, but not limited to SELVOL 523, SELVOL 530, SELVOL 540, SELVOL 518, SELVOL 513, SELVOL 508, SELVOL 504
  • POVAL Kuraray Europe GmbH
  • PVA 1788 also referred to as PVA BP17
  • the flexible, porous, dissolvable, scented, solid sheet article comprises of a polyvinyl alcohol having a molecular weight average ranging from 80 000 Dalton to 150 000 Dalton and a preferred degree of hydrolysis from about 80% to 90%.
  • the flexible, porous, dissolvable, scented, solid sheet article comprises of at least one surfactant.
  • the surfactant may function as emulsifying agent during the aeration process to create a sufficient number of stable bubbles for forming the desired structure of the flexible, porous, dissolvable, solid sheet article.
  • the surfactant may serve as an active ingredient in the flexible, porous, dissolvable, scented, solid sheet article e.g. for cleaning the laundry.
  • the surfactant included in the flexible, porous, dissolvable, scented, solid sheet article can be selected from the group of anionic surfactants, non-ionic surfactants, cationic surfactants, zwitterionic surfactants, amphoteric surfactants, polymeric surfactants, and any combinations thereof.
  • the surfactant may function on one hand as an active ingredient included in a flexible, porous, dissolvable, scented, solid sheet article, on the other hand the surfactant may serve as a stabilizer of the foam both in the wet pre-mixture as well as in the flexible, porous, dissolvable, solid sheet article.
  • anionic surfactants are alkyl sulfates, alkyl ether sulfates, linear or branched alkyl alkoxy sulfates, linear or branched alkylethoxy sulfates, B-alkyloxy alkane sulfonates, sulphated monoglycerides, sulfonated olefins, alkyl aryl sulfonates, primary or secondary alkane sulfonates, alkyl sulfosuccinates, acyl taurates, acyl isethionates, alkyl glycerylether sulfonate, sulfonated methyl esters, sulfonated fatty acids, alkyl phosphates acyl glutamates, acyl sarcosinates, alkyl sulfoacetates, acylated peptides, alkyl ether carboxylates, acyl lacty
  • anionic surfactants suitable for use in porous, flexible, dissolvable, scented, solid sheet article are disodium laurylsulfosuccinate, diammonium laurylsulfosuccinate, tetrasodium N-(1,2-dicarboxyethyl)-N-octadecylsulfosuccinnate; diamyl ester of sodium sulfosuccinic acid; dihexyl ester of sodium sulfosuccinic acid, dioctyl esters of sodium sulfosuccinic acid; ammonium lauryl sulfate, ammonium laureth sulfate, ammonium laureth-1 sulfate, ammonium laureth-2 sulfate, ammonium laureth-3 sulphate, triethanolamine, lauryl sulfate, triethanolamine laureth sulfate, triethanolamine laureth-1 sululfate
  • non-ionic surfactants suitable for use in a flexible, porous, dissolvable, scented, solid sheet article are any conventional non-ionic surfactants, including but not limited to alkyl alkoxylated alcohols, alkyl alkoxylated phenols, alkyl polysaccharides, polyhydroxy fatty acid amides, alkoxylated fatty acid esters sucrose esters, sorbitan esters and alkoxylated derivatives of sorbitan esters, amine oxides, and the like.
  • nonionic surfactants are C6-C12 alkyl phenol condensates with ethylene oxide/propylene oxide block polymers; C14-C22 mid-chain branched alcohols; C14-C22 midchain branched alkoxylates, BAE X , wherein x is 1-30; alkyl poly saccharides specifically alkyl polyglycosides; polyhydroxy fatty acid amides; and ether capped poly(oxyalkylated) alcohol surfactants, preferably C6-C20 linear or branched alkylalkoxylated alcohols.
  • cationic surfactants suitable for use in a flexible, porous, dissolvable, scented solid sheet article include but are not limited to quaternary ammonium compounds such as alkylated quaternary ammonium compounds, ring or cyclic quaternary ammonium compounds, aromatic quaternary ammonium compounds, diquaternary ammonium compounds, alkoxylated quaternary ammonium compounds, amidoamine quaternary ammonium compounds, ester quaternary ammonium compounds, and mixtures thereof.
  • quaternary ammonium compounds such as alkylated quaternary ammonium compounds, ring or cyclic quaternary ammonium compounds, aromatic quaternary ammonium compounds, diquaternary ammonium compounds, alkoxylated quaternary ammonium compounds, amidoamine quaternary ammonium compounds, ester quaternary ammonium compounds, and mixtures thereof.
  • cationic compounds are diester quaternary ammonium compounds, C12-22 mono/di-alkyl quaternary ammonium compounds, C12-C22 mono-alkyl amine compounds, and combinations thereof.
  • Further preferred examples of cationic surfactants are behenyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, lauryl trimethyl ammonium chloride, hydrogenated tallow alkyl trimethyl ammonium chloride, dimethyl hydroxyethyl lauryl ammonium chloride, dialkyl (14- 18) dimethyl ammonium chloride, ditallow alkyl dimethyl ammonium chloride, dicetyl dimethyl ammonium chloride, N,N-di(acyl-oxyethyl)-N,N-dimethylammonium chloride, N,N-di(acyl- oxyisopropyl)-N , N-dimethylammonium methylsulf
  • N.Nmethylhydroxyethylammonium methylsulfate and combinations thereof.
  • amphoteric surfactants suitable for use in a flexible, porous, dissolvable, scented, solid sheet article are broadly described as derivatives of aliphatic secondary and tertiary amines in which the aliphatic radical can be a straight or branched chain and wherein one of the aliphatic substituents contains from about 8 to 18 carbon atoms and one contains an anionic water solubilizing group, e.g. carboxy-, sulfonate-, sulfate-, phosphate-, phosphonate-group.
  • Examples of compounds falling within this definition are sodium 3- dodecyl-aminopropionate, sodium 3-dodecylaminopropane sulfonate, sodium lauryl sarcosinate, N-alkyltaurines (e.g. by reacting dodecylamine with sodium isethionate and N- higher alkyl aspartic acids).
  • amphoteric surfactants suitable for use in a flexible, porous, dissolvable, scented, solid sheet article are sodium cocaminopropionate, sodium cocaminodipropionate, sodium cocamphoacetate, sodium cocamphohydroxypropylsulfonate, sodium cocamphopropionate, sodium cornamphopropionate, sodium lauraminopropionate, sodium lauramphoacetate, sodium lauramphohydroxypropylsulfonate, sodium lauramphopropionate, sodium lauramphoacetate, sodium lauramphohydroxypropylsulfonate, sodium lauramphopropionate, sodium cornamphopropionate, sodium lauriminodipropionate, ammonium cocaminopropionate, ammonium cocaminodipropionate, ammonium cocamphoacetate, ammonium cocamphohydroxypropylsulfonate, ammonium cocamphopropionate, ammonium cornamphopropionate, ammonium la
  • Zwitterionic surfactants suitable for use in a flexible, porous, dissolvable, scented, solid sheet article are broadly described as derivatives of aliphatic quaternary ammonium, phosphonium, and sulfonium compounds, in which the aliphatic radicals can be a straight or branched chain, and wherein one of the aliphatic aliphatic substituents contains from about 8 to 18 carbon atoms and one contains an anionic group e.g. carboxy-, sulfonate, sulfate-, phosphate-, or phosphonate-group.
  • polymeric surfactants suitable for use in a flexible, porous, dissolvable, scented, solid sheet article are block copolymer of ethylene oxide and fatty alkyl residues, block copolymers of ethylene oxide and propylene oxide, hydrophobically modified polyacrylates hydrophobically modified celluloses, silicone polyethers, silicone copolyol esters, diquaternary polydimethylsiloxanes, and co-modified amino/polyether silicones.
  • the amount of surfactant in a flexible, porous, dissolvable, scented, solid sheet article may be present in an amount of about 10% to about 70%, preferably from about 20% to about 65%, more preferred from about 40% to about 60% by total weight of a flexible, porous, dissolvable, solid sheet article.
  • Another preferred embodiment of the invention comprises a flexible, porous, dissolvable, scented, solid sheet article comprising a moisturizer.
  • the amount of the moisturizer in the flexible, porous, dissolvable, solid sheet article ranges from about 1% to 65%, preferably from about 10% to about 65%, more preferably from about 20% to about 50%, most preferred from about 22% to about 40% by total weight of the flexible, porous, dissolvable, solid sheet article.
  • a moisturizer may have the function of providing enough moisture in the flexible, dissolvable, porous, scented, solid sheet article to support the flexibility and to keep it, resulting in a storage stability of the article.
  • the moisturizer may be referred to as plasticizer.
  • Suitable moisturizers include but are not limited to polyols such as for example glycerin, diglycerin, ethylene glycol, polyethylene glycol, propylene glycol, butylene glycol, pentylene glycol, glycerol derivatives, glycidol, cyclohexane dimethanol, diols such as preferably 1,2- propanediol, 1,2-butanediol, 1 ,2-hexanediol, 1,2-octanediol, 1 ,2-decanediol, 1,2- dodecanediol, 2,2,4-trimethylpentane-1,3-diol, pentaerythriol, urea, sugar alcohols, mono-, di- and oligo-saccharides, ascorbic acid, sorbates, ethylene bisformamide and amino acids.
  • polyols such as for example glycerin, diglycerin, ethylene glycol, polyethylene glyco
  • suitable moisturizers include, but are not limited to copolyols and polycarboxylic acids such as citric acids, maleic acid, succinic acid, polyacrylic acid and polymaleic acid.
  • Suitable moisturizers also may include but are not limited to polyesters such as for example glycerol triacetate, acetylated monoglyceride, diethyl phthalate, triethyl citrate, tributyl citrate, acetyl triethyl citrate, acetyl tributyl citrate.
  • More suitable moisturizers include but are not limited to dimethicone, alkyl and allyl phthalates, naphtalates, lactates, lactic acid, sodium pyrrolidone carboxylic acid, sodium hyaluronate, hyaluronic acid, soluble collagen, modified protein, monosodium L-glutamate, alpha hydroxyl acids, beta hydroxyl acids such as for example glutamic acid, aspartic acid and lysine, hydrogen starch hydrolysates and mixtures thereof.
  • mineral oil is also suitable for use as a plasticizer / moisturizer in a flexible, porous, dissolvable, scented, solid sheet article.
  • the flexile, porous, dissolvable, scented, solid sheet article of the present disclosure may comprise one or more additional ingredients.
  • additional ingredients may be selected from the group consisting of fabric care actives, dishwashing actives, hard surface cleaning actives, beauty care actives, skin care actives, hair care actives, personal cleansing actives, oral care actives, feminine care actives, baby care actives, a bittering agent and/or any combinations thereof.
  • fabric care actives suitable for the invention of the present disclosure may include, but are not limited to organic solvents such as linear or branched C1- C8 alcohols, diols, glycerols, triols or glycols, lower amine solvents such as C1-C4 alkanolamines, carriers, hydrotropes, builders, chelants, dispersants, enzymes and enzyme stabilizers, catalytic materials, bleaches and bleach activators, colorants such as pigments and dyes, brighteners, dye transfer inhibiting agents, clay soil removal/anti-redeposition agents, structurants, rheology modifiers, suds suppressors, processing aids, fabric softeners, antimicrobial agents and the like.
  • ingredients such as 1,2- propanediol, ethanol, glycerol, monoethanolamine, triethanolamine, and mixtures thereof.
  • the wet pre mixture, provided to manufacture a flexible, porous, dissolvable, scented, solid sheet article may also comprise fabric care actives, beauty care actives, skin care actives, personal cleansing actives, bittering agent(s) and/or any combinations thereof.
  • Suitable bittering agents include a denatonium salt or a derivative thereof.
  • one or more bittering agent(s) is chosen from the group consisting of denatonium chloride, denatonium citrate, denatonium saccharide, denatonium carbonate, denatonium acetate, denatonium benzoate, and mixtures thereof.
  • bittering agent is natural bitter substance chosen from the group consisting of glycosides alkaloids, amino acids, isoprenoides, and mixtures thereof.
  • Preferred bittering agents according to this invention may include but are not limited to such as Quercetin, Naringin, Aucubin, Amarogentin, Dihydrofoliamentin, Gentiopicrin, Swertiamarin, Swerosid, Gentioflavosid, Centaurosid, Methiafolin, Harpagoside, Centapikrin, Sailicin, Kondurangin, Absinthin, Artabsin, Cnicin, Lactucin, Lactucopicrin, Salonitenolid, a- thujone, B-thujone, Desoxy Limonene, Limonin, Ichangin, iso-Obacunoic Acid, Obacunone, Obacunoic Acid, Nomilin, Ichangin, Nomilinoic Acid, Marrubin, Pramarrubin, Carn
  • starches in addition to water- soluble polymer.
  • a polyvinyl alcohol would be the preferred water-soluble polymer.
  • a starch may be used as a filler material. The purpose of using starch as an additive is, to reduce the amount of water-soluble polymer necessary to form a flexible, porous, dissolvable, scented, solid sheet article. An amount of starch that is too high may compromise the solubility and structural integrity of the flexible, porous, dissolvable, scented, solid sheet article.
  • the amount of starch used to form a flexible, porous, dissolvable, scented, solid sheet article is preferably less than 20wt%, more preferably less than 10wt%, even more preferably less than 5wt%, most preferred less than 1wt% of starch.
  • Suitable starches for this invention may include but are not limited to corn starch, potato starch, wheat starch, rice starch, tapioca starch, rye starch, pea starch, barley starch.
  • a flexible, porous, dissolvable, scented, solid sheet article according to the invention can be characterized by the following characteristics:
  • the flexible, porous, dissolvable, scented, solid sheet article may have an open cell content of about 80% to about 100%, preferably from 85% to about 99%, more preferably from about 90% to about 98%. It may furthermore have a pore size from about 100 pm to about 2000 m, more preferably from about 150 pm to about 1000 pm, more preferably from 200 pm to about 600 pm.
  • a high open cell content as described above as well as a small pore size is preferred, to gain as much surface area as possible. This allows a very high density of active laundry ingredients that can be loaded onto the foamy framework structure of the flexible, porous, dissolvable, scented, solid sheet article.
  • the flexible, porous, dissolvable, scented, solid sheet article may have a cell wall thickness of from about 5 pm to about 200 pm, preferably from about 10 pm to about 100 pm, more preferably from about 10 pm to about 80 pm.
  • the mentioned area is preferred to give enough stability to the flexible, porous, dissolvable, scented, solid sheet article.
  • the cell wall is not so thick as to lower the relative surface area.
  • a flexible, porous, dissolvable, scented, solid sheet article according to this invention may contain some water, more precisely from about 0,5% to about 25%, preferably 1% to about 20%, more preferably about 3% to about 10% of final moisture content. This moisture content allows the flexible, porous, dissolvable, scented, solid sheet article to contain its flexibility without losing its integrity and shape.
  • the flexible porous dissolvable, scented, solid sheet article according to this invention may have a specific surface area of about 0,03 m 2 /g to about 0,25 m 2 /g, preferably from about 0,04 m 2 /g to about 0,22 m 2 /g, more preferably from about 0,05 m 2 /g to about 0,2 m 2 /g, most preferably from about 0,1 m 2 /g to about 0,18 m 2 /g.
  • the flexible, porous, dissolvable, scented, solid sheet article may have a density ranging from about 0,05 g/cm 3 to about 0,5 g/cm 3 , preferably from about 0,06 g/cm 3 to about 0,4 g/cm 3 , more preferably from 0,07 g/cm 3 to about 0,2 g/cm 3 , most preferred from about 0,08 g/cm 3 to about 0,15 g/cm 3 .
  • the final consumer laundry product may comprise one or more flexible, porous, dissolvable, scented, solid sheet articles. It may comprise from about 4 to about 50, preferably 5 to about 40, more preferably from about 6 to about 30 of such flexible, dissolvable, porous, scented, solid sheet articles.
  • the described sheet articles may be stacked, rolled, or arranged in any other way pleasing to the costumer eye without losing its quick dissolving properties. Combining two or more flexible, porous, dissolvable, scented, solid sheet articles may also provide a functional advantage in creating for example, but not limited to one or more pockets or pouches that can be filled with one or more benefit agent(s).
  • the flexible, porous, dissolvable, scented, solid sheet article may comprise a colour.
  • the colour is chosen to appeal to the costumer and/or to be associated with a certain quality by customers.
  • two or more flexible, porous, dissolvable, scented, solid sheet articles are combined and coloured, preferably in different colours, making the final costumer laundry product even more appealing to the customer or to make an even stronger association with a desired quality the multicoloured product would inspire.
  • a further embodiment of the invention comprises one or more flexible, porous, dissolvable, scented, solid sheet articles that may have been given any two- or three-dimensional form or shape that might be desirable considering either the functionality of the final consumer laundry product or the appeal of such product for the customer.
  • Example 1 Basic formulation for manufacturing a flexible, porous, dissolvable, scented, solid sheet article
  • Table 1 Ingredients for producing a flexible, porous, dissolvable, scented, solid sheet article
  • the ingredients from table 1 were weighed into a beaker, then covered with a lid and mixed with a Speed Mixer (I KA Eurostar 20 Highspeed) at 750 rpm for 3 minutes until the mixture was homogenous.
  • the mixture was heated up until 90°C for 30 minutes while stirring the mixture at 750 rpm. Afterwards the mixture was cooled down over a period of 60 minutes until the mixture reached a temperature of 23°C. For aerating, the mixture was stirred with a speed of 6000 rpm. It resulted in the creation of fine foam.
  • the foam was spread on a heating plate covered with aluminium foil. The foam had a height of less than 10 mm.
  • the sheet was dried on a hot plate covered with aluminium foil for 15 minutes at 90°C - 100°C.
  • Example 2 Perfume compositions provided in the flexible, porous, dissolvable, solid sheet article.
  • the sheet articles were used for laundering towels, afterwards the laundered towels were dried and evaluated for their fragrance performance.
  • 5 towels Size: 12 cm x 12 cm
  • Example 4 Effect of sheet article with capsules on laundry - Sensory evaluation
  • the sensoric performance of the produced sheet articles were determined by a panel of trained professionals (not perfumers).
  • the towels were evaluated and rated on a scale from 0, 1-0,9, wherein 0,1 is the weakest rating and 0,9 is the strongest rating, the towels were evaluated 3 times.
  • the following values were determined: a.) Intensity and performance of the fragrance without mechanic manipulation. b.) Intensity and performance of the fragrance after kneading the towel 6 times. c.) Intensity and performance of the fragrance after rubbing the towel.
  • Fig.1 shows that the perfumes containing esters and the perfume containing aldehydes performed significantly better, considering the intensity of the fragrance.
  • the scale used for this evaluation ranges from 0 - 1 with 0 being the lowest and worst possible value and 1 being the best possible value.
  • the average results are also shown in table 7 below Fig. 1.
  • the blind value was a towel washed with an unscented flexible, porous, dissolvable solid sheet article.
  • Fig. 2 shows, that the perfume themselves hat a similar intensity in the jar (before using the perfumes in the sheets). This shows that aldehydes and ester show indeed a better performance in this application and the results are not due to the weakness of the compositions I), II) and III) and a stronger intensity of composition IV) and V).
  • the scale used for this evaluation rages from 1-10, with 1 being the lowest value and 10 being the highest and best possible value.

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Abstract

The disclosure of the present invention covers the improvement of sheet articles for use in laundry care as well as including the improvements in the process of making such an article.

Description

Improved Scented Laundry Sheets
Abstract
The objective for this invention was, to provide an improvement of a flexible, porous, dissolvable, scented, solid sheet article for laundry care.
Background of the Invention
Unit dose articles become more and more popular as consumers demand from their products to be of easy use, good performance and sustainable as well. So called laundry sheets, that consist of a dissolvable, flexible, porous polymer structure, loaded with laundry detergents, fragrances and optionally other benefit agents are one example to provide a product compliant with these consumer requests. Laundry sheets are a well-known and widely described alternative for powder detergents and liquid detergents.
These sheets are made of a water-soluble, non-toxic polymer that is loaded with the right number of detergents and active ingredients. This makes a unit dose use possible, prohibiting an overdosage, which would be a non-sustainable waste and could have the result that a larger amount of detergent residue remains on the clothes after washing. It also prohibits an underdosage, which would result in the laundry not being clean after washing.
State of the art
W02022037093A1 does include the capsule slurry in the wet pre-mixture of the raw materials of the laundry sheet. The patent does include fragrance capsules in general but does also not show a way to receive optimal fragrance performance or information in how to improve the scent given to the laundry by the sheet.
W02011014643A1 discloses a porous sheet article comprising a fabric conditioner. The patent does reveal in general capsules and neat perfume which are included among other materials in the article. However, no specific details are given about any consideration that would lead to an improvement or would lessen the impact of fragrance in such an article.
W02020147000A1 discloses an invention including a process that improves the manufacturing process of a flexible, dissolvable, solid sheet article. No improvement in the aspect of the performance of the sheet article is mentioned.
Hence guidance is needed to achieve this technical effect. Task of the invention
A first objective of the invention was an enhanced fragrance performance and a high intensity of fragrance on the laundry as improvement of a flexible, porous, dissolvable, scented, solid sheet article.
Another preferred objective was, that the improvement should be noticeable on the laundry after using the article according to the invention.
Furthermore, it was the objective to provide an article with an improved solubility at a lower water temperature, showing a fast solubility rate.
The improved article should have a high storage stability without becoming brittle, browned, or corroded by any active ingredient. It should be flexible, yet keep its mechanical stability and integrity of shape, form, and texture over time. A preferred objective is an article that provides a storage stable scent and a good scent performance after storing the article.
It was one objective to find a way to improve the article, that it would provide a nice, appealing scent with a pleasing intensity, not too low or too high when handled by the customer without unpleasantly strong odour remaining on the customers hands before the laundry process and providing a high fragrance intensity on the laundry after washing, preferably perceivable also after storing the laundry.
A further objective of the invention was the improvement of the production process of an improved sheet article with the features described above. It was the objective of this invention to have a manufacturing process of said article that has mild conditions, is energy efficient and wherein no problems of foaming over occur, and no toxic auxiliary materials are needed, preferably using sustainable, biodegradable materials.
It was desirable to provide a process that would produce such an improved article that would combine all the desired features, described above.
Description of the invention
This objective of an improved laundry sheet article described above was achieved by providing a flexible, porous, dissolvable, scented, solid sheet article comprising water, a soluble polymer, a surfactant, a moisturizer and a fragrance composition, wherein the fragrance composition comprises a fragrance oil, comprising at least one aldehyde preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehyde compounds and/or at least one ester, preferably two esters, more preferably three esters, even more preferably four esters.
In one embodiment of the invention the flexible, porous, dissolvable, scented, solid sheet article comprises a fragrance composition wherein the fragrance composition consists of neat fragrance composition comprising a fragrance oil, comprising at least one aldehyde preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehydes and/or at least one ester, preferably two esters, more preferably three esters, even more preferably four esters, and/or an encapsulated fragrance composition.
It is preferred that the encapsulated fragrance composition(s) is/are selected from the group consisting of matrix encapsulated fragrance compositions, core shell encapsulated fragrance compositions, molecular encapsulated fragrance compositions and combinations thereof wherein core shell encapsulated fragrances are preferred, wherein the fragrance oil of the encapsulated fragrance composition comprises a fragrance oil, comprising at least one aldehyde preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehydes and/or at least one ester, preferably two esters, more preferably three esters, even more preferably four esters.lt is also preferred that the encapsulated fragrance composition of the flexible, porous, dissolvable, scented, solid sheet article comprises a core and a shell, wherein the ratio of core to shell ranges from 95:5 to 70:30, preferably from 95:5 to 80:20, even more preferred from 95:5 to 50:50, wherein the fragrance oil of the encapsulated fragrance composition comprises at least one aldehyde preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehydes and/or at least one ester, preferably two esters, more preferably three esters, even more preferably four esters.
In one preferred embodiment of the invention examples of the shell material of the encapsulated fragrance composition, , included in the flexible, porous, dissolvable, scented, solid sheet article include, but are not limited to polyethylenes, polyamides, polyamines, ployacrylamides, polystyrenes, polyvinylamines, polyvinyl formamides, polyolefins, polyvinylalcohols, polyacrylates, polymethacrylates, polyvinylacrylates, polyisoprenes polyvinylmethyacrylates, aminoplasts, polyisocyanate such as aliphatic polyisocyanates, aromatic polyisocyanates, polyvinylamines, polyvinyl formamides, Polyvinyl pyrrolidone, polyvinyl pyrrolidone co-polymers, polyvinylpyrrolidone vinyl acrylate, polyvinylpyrrolidone methacrylate, polyvinylpyrrolidone ethacrylate, polyvinylpyrrolidone vinylacrylate , polyvinyl acetal, polyvinyl butyral, polyolefins, polycarbonates, polyesters, polyethylene maleic anhydride, gelatin, shellac, epoxy resins, vinyl polymers, water-insoluble inorganics (e.g. silicas), silicones, polysiloxane, polypropylene maleic acid, polypropylene maleic acid copolymer, maleic anhydride derivatives, co-polymers of maleic anhydride derivatives, waxes, aminoplasts, (preferred polyureas, polyurethanes, polyureaurethanes, melamineformaldehyde, cross-linked melamine-formaldehyde, urea-formaldehyde, cross-linked urea formaldehyde), styrene butadiene latex, gum Arabic, alginate, sodium alginate, chitosan, casein, pectin, inulin, agar, traganth, carrageen, konjac gum, guar gum, carob bean gum, xanthan gum, paramylon, starches such as potato starch, wheat starch, corn starch, rice starch, tapioca starch, oat starch and modified starches, starch derivatives such as dextrins, maltodextrins, cyclodextrins, oligosaccharids, sugar alcohols such as sorbitol, mannitol, isomalt, maltitol, lactitol, xylitol, erythritol, gellan, glucose, glycosaminoglycans, maltitol- syrup, lactitol, polyvinylmethylether, polyallyl amines, co-polymers of polyallyl amines, polysaccharides such as cellulose and cellulose derivatives such as carboxyl methyl cellulose (CMC), carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose, microcrystalline cellulose (MCC), hemicelluloses, raffinose, xylose, polydextrose, lactulose, lichenin, chitin, chitosan, lignin, vegetable fibers, potato fibers, apple fibers, citrus fibers, bamboo fibers, extracted sugar beet fibers, oat fibers, vegetable proteins such as hemp protein, sunflower protein, pea protein, pumpkin protein, soy protein, wheat protein, barley protein, rye protein, spelled protein, gluten protein, rapeseed protein, rice protein, potato protein, corn protein, bean protein, chick pea protein, lens protein, lupine protein, peanut protein, alfalfa protein, fava beans protein, and mixtures thereof.
In a preferred embodiment of the invention the aldehydes of the fragrance oil included in the fragrance composition included in the flexible, porous, dissolvable, scented, solid sheet article include, but are not limited to 2,6,10-trimethylundec-9-enal (141-13-9; Adoxal; Farenal); alpha-,3,3-trimethyl-cyclohexanemethanolformate (25225-08-5; Aphermate); 4-(1, 1-dimethylethyl)-benzenepropanal (18127-01-0; Bourgeonal); 6-methoxy-2,6-dimethyloctanal (929253-05-4; Calypsone); 4-methoxy-alpha-methyl-benzenepropanal (5462-06-6; Canthoxal); a,2,2,6-tetramethylcyclohexenebutanal (65405-84-7; Cetonal); 8,8-dimethyl- 1 ,2,3,4,5,6,7,8-octahydro-2-naphthaldehyde + 1 ,2,3,4,5,6,7,8-octahydro-5,5-dimethyl-2- naphthalenecarboxaldehyde (68991-96-8; 68991-97-9; Cyclomyral); 4-(octahydro-4,7- methano-5H-inden-5-ylidene butanal (30168-23-1; Dupical); 4,8-dimethyl-4,9-decadienal (71077-31-1 ; Floral Super); 3-(4-ethylphenyl)-2,2-dimethylpropanal + 3-(2-ethylphenyl)-2,2- dimethylpropanal (67634-15-5; 67634-14-4; Florazon); beta-methyl-3-(1-methylethyl)- benzenepropanal (12509-85-5; Florhydral); methylenedioxyphenyl-methylpropanal (1205-17- 0; Helional); a,4-dimethylbenzenepropanal (41496-43-9; Jasmorange, Satinaldehyde); (Z,E)- 2,4-dimethyl cyclohex-3-ene-1-carbaldehyde (68039-49-6; 68737-61-1 ; Ligustral, Tripalal, Cyclal C, Vertocitral) ; 3-(4-tert-butylphenyl)butanal (80-54-6; Lilial); (1R)-p,4-dimethyl-3- cyclohexene-1-propanal (199445-85-7; Liminal); (4R)-4-(1 -Methylethyl)- 1 -cyclohexene- 1- propanal (1378867-81-2; Lilybelle); (4S)-4-(1-Methylethyl)-1-cyclohexene-1-propanal (1378867-82-3; Lilybelle Isomer); 4-(4-Hydroxy-4-methyl-pentyl)-3-cyclohexen-1- carboxyaldehyde (130066-44-3; Lyral); 6-methyl-1-8-yl-methylethyl-bicyclo[2.2.2]oct-5-ene- 2-carboxaldehyde (67845-30-1; Maceal); (±)-2,6-Dimethyl-5-heptenal (106-72-9; Melonal); (E)-2,6,10-trimethylundeca-5,9-dienal (54082-68-7; Oncidal); 6,6-Dimethyl-2-norpinene-2- propionaldehyde (33885-51-7; Pinoacet aldehyde); 1-methyl-4-(4-methyl-3- pentenyl)cyclohex-3-ene-1-carboxaldehyde + 6,6-dimethyl-2-norpinene-2-propionaldehyde (119652-81-2; 52475-86-2; Precyclemone B); 3-phenylbutanal (16251-77-7; Trifernal); octahydro-5-methoxy-4,7-methano-1 H-indene-2-carboxaldehyde (86803-90-9; Scentenal); rel-(3aR,4R,5R,7R,7aR)-octahydro-4,7-methano-1 H-indene-5-carboxaldehyde (145374-28-3; Vertral); 4-(4-methyl pent-3-enyl) cyclohex-3-ene-1-carbaldehyde (37677-14-8; Vertomugal); Hexanal; Heptanal; Octanal; 2-Nonen-1-al; Nonanal; Decanal; Undecenal; 2-Methyldecanal; 10-Undecenal; Undecanal; Dodecanal; 2-Methylundecanal; Anisic Aldehyde; Benzaldehyde; Citral; Citronellal; Cinnamaldehyde; Cuminic Aldehyde; Cyclamen aldehyde; Dihydrocitronellal; trans-2-dodecanal; Ethyl Vanillin; Geranial; Heliotropin/Piperonal; trans-2- hexenal; Alpha-hexyl-cinnamic aldehyde; Hydratropic Aldehyde; Hxdroxy Citronellal; Isocyclocitral; Methoxycitronellal; Neral; Phenylacetaldehyde; Tangerinal; Cyclamen Homoaldehyde and Vanillin.
In another preferred embodiment of the invention the esters of the fragrance oil, included in the fragrance composition included in the flexible, porous, dissolvable, scented, solid sheet article include, but are not limited to cis-2-tert-butylcyclohexyl acetate + (2-tert- butylcyclohexyl)-acetate (20298-69-5; 88-41-5; Argumex HC I LC); ethyl 3-methyl-3- phenyloxirane-2-carboxylate (77-83-8; Aldehyde C16 so-called); prop-2-enyl-2- cyclohexyloxyacetate (68901-15-5; Cyclogalbanat); methyl-2,4-dihydroxy-3,6- dimethylbenzoate (4707-47-5; Evernyl); 4-methylpentan-2-yl (E)-but-2-enoate (35206-51-0; Frutinat); ethyl-2-ethyl-6,6-dimethylcyclohex-2-ene-1 -carboxylate (57934-97-1 ; 77851-07-1; Givescone); methyl-3-oxo-2-pentylcyclopentaneacetate (24851-98-7; Hedione); 2-(1-(3',3'- dimethyl-1'-cyclohexyl)ethoxy)-2-methyl propyl propanoate (141773-73-1; Helvetolide); 3a,4,5,6,7,7a-hexahydro-4,7-methanoinden-6-yl acetate (5413-60-5; Herbalflorat); 3a,4,5,6,7,7a-hexahydro-4,7-methanoinden-6-yl acetate (5413-60-5; Herbalflorat); [(Z)-hex- 3-enyl] methyl carbonate (67633-96-9; Leafovert); ethyl-2-methylpentanoate (39255-32-8; Manzanate); 2-[1-(3,3-Dimethylcyclohexyl)ethoxy]-2-oxoethyl propionate (236391-76-7; Romandolide); ethyl 2-cyclopent-2-en-1-ylacetate (15848-49-4; Sultanene); (1S,2R,5S)-5- methyl-2-(1-methylethyl)-cyclohexanolacetate + [(1 R,2S,5R)-5-methyl-2-propan-2- ylcyclohexyl]-acetate (29066-34-0; 89-48-5; Symfresh RF I Menthylacetate); 3-hydroxy-2,2,4- trimethylpentyl 2-methylpropanoate (25265-77-4; Symfresh NX); (4-methyl-4-phenylpentan- 2-yl)-acetate (68083-58-9; Vertikolacetat); Allyl Amyl Glycolate; Allyl Caproate; Allyl Cyclohexyl Propionate; Allyl Heptoate; Benzyl Acetate; Benzyl Salicylate; Citronellyl Acetate; Dimethyl Benzyl Carbinyl Acetate; Dimethyl Benzyl Carbinyl Butyrate; Ethyl acetoacetate; Ethyl Butyrate; Ethyl Caproate; Trans/Cis-2,4-Ethyl Decadienoate; Ethyl-2-M ethyl Butyrate; Ethylene Brassylate; Geranyl Acetate; Herbyl Propionate; Cis/Trans-3- Hexenyl Acetate; Cis- 3 Hexenyl Acetate; Cis-3 Hexenyl Butyrate; Cis-3-Hexenyl Isobutyrate; Cis-3-Hexenyl Salicylate; Hexyl Acetate; Hexyl Butyrate; Hexyl Isobutyrate; Hexyl Salicylate; Isoamyl Acetate; Isobornyl Acetate; Isobutyl Acetate; Isoeugenyl Acetate; Linalyl Acetate; Methyl Octin Carbonate; Neryl Acetate; Phenylethyl Butyrate; Phenylethyl Cinnamate; Prenyl Acetate; Styralyl Acetate and Methylanthranilat.
In one preferred embodiment of the invention the fragrance oil included in the fragrance composition included in a flexible, porous, dissolvable, scented solid sheet article comprises from 0,05wt% to 99,5wt%, preferably from 0,1 wt% to 90wt%, more preferably from about 0,15% to about 75wt%, even more preferably from 0,2 to 50wt%, even more preferred 0,5wt% to 35wt%, even more preferred 0,5wt% to 25wt%, most preferred 0,5wt% to 15wt% of esters based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
Another preferred embodiment of the invention discloses a fragrance composition for a flexible, porous, dissolvable, scented, solid sheet article that comprises from 1wt% to 99wt%, preferably from 3wt% to 90wt%, more preferably from 5wt% to 85wt%, even more preferred from 7wt% to 80wt% most preferred 8wt% to 75wt% of esters based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
A further preferred embodiment of the invention comprises from 2wt% to 50wt%, preferably from 3wt% to 40wt%, more preferably from 3,5wt% to 35wt%, even more preferred from 4,0wt% to 30wt%, most preferred from 5wt% to 25% of esters based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition. A further preferred embodiment of the invention discloses the fragrance composition provided for a flexible, porous, dissolvable, scented, solid sheet article comprising 0,05wt% to 99,5wt%, preferably from 0,1wt% to 90wt%, more preferably from about 0,15% to about 75wt%, even more preferably from 0,2 to 50wt%, even more preferred 0,5wt% to 35wt%, even more preferred 0,5wt% to 25wt%, most preferred 0,5wt% to 15wt% of aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
Another preferred embodiment of the invention discloses a fragrance composition for a flexible, porous, dissolvable, scented, solid sheet article that comprises from 1wt% to 99wt%, preferably from 3wt% to 90wt%, more preferably from 5wt% to 85wt%, even more preferred from 7wt% to 80wt% most preferred 8wt% to 75wt% of aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
A further preferred embodiment of the invention comprises from 2wt% to 50wt%, preferably from 3wt% to 40wt%, more preferably from 3,5wt% to 35wt%, even more preferred from 4,0wt% to 30wt%, most preferred from 5wt% to 25% of aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
A further preferred embodiment of the invention discloses the fragrance composition provided for a flexible, porous, dissolvable, scented, solid sheet article comprising 0,05wt% to 99,5wt%, preferably from 0,1wt% to 90wt%, more preferably from about 0,15% to about 75wt%, even more preferably from 0,2 to 50wt%, even more preferred 0,5wt% to 35wt%, even more preferred 0,5wt% to 25wt%, most preferred 0,5wt% to 15wt% of esters and aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
Another preferred embodiment of the invention discloses a fragrance composition for a flexible, porous, dissolvable, scented, solid sheet article that comprises from 1wt% to 99wt%, preferably from 3wt% to 90wt%, more preferably from 5wt% to 85wt%, even more preferred from 7wt% to 80wt% most preferred 8wt% to 75wt% of esters and aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
A further preferred embodiment of the invention comprises from 2wt% to 50wt%, preferably from 3wt% to 40wt%, more preferably from 3,5wt% to 35wt%, even more preferred from 4,0wt% to 30wt%, most preferred from 5wt% to 25% of esters and aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition. Also, in a further preferred embodiment of the fragrance composition included in a flexible, porous, dissolvable, scented solid sheet article comprises from 0,01wt% to 50wt%, preferably from 0,02wt% to 30wt%, more preferably from 0,05wt% to 10wt%, most preferably from 0,1 wt% to 5wt% of encapsulated fragrance composition by total weight of said solid sheet article. In another preferred embodiment of the invention, the fragrance composition included in a flexible, porous, dissolvable, scented, solid sheet article comprises from 0,01wt% to 30wt%, preferably from 0,02wt% to 25wt%, more preferably from 0,03wt% to 15wt%, even more preferred 0,04wt% to 15wt%, most preferred 0,05wt% to 10wt% of encapsulated fragrance by total weight of said solid sheet article.
Also, in a further preferred embodiment of the fragrance composition included in a flexible, porous, dissolvable, scented solid sheet article comprises from 0,01wt% to 50wt%, preferably from 0,02wt% to 30wt%, more preferably from 0,05wt% to 10wt%, most preferably from 0,1 wt% to 5wt% of neat fragrance by total weight of said solid sheet article. In another preferred embodiment of the invention, the fragrance composition included in a flexible, porous, dissolvable, scented, solid sheet article comprises from 0,01wt% to 30wt%, preferably from 0,02wt% to 25wt%, more preferably from 0,03wt% to 15wt%, even more preferred 0,04wt% to 15wt%, most preferred 0,05wt% to 10wt% of neat fragrance by total weight of said solid sheet article.
Also, in a further preferred embodiment of the fragrance composition included in a flexible, porous, dissolvable, scented solid sheet article comprises from 0,01wt% to 50wt%, preferably from 0,02wt% to 30wt%, more preferably from 0,05wt% to 10wt%, most preferably from 0,1 wt% to 5wt% of encapsulated fragrance composition and neat perfume by total weight of said solid sheet article. In another preferred embodiment of the invention, the fragrance composition included in a flexible, porous, dissolvable, scented, solid sheet article comprises from 0,01wt% to 30wt%, preferably from 0,02wt% to 25wt%, more preferably from 0,03wt% to 15wt%, even more preferred 0,04wt% to 15wt%, most preferred 0,05wt% to 10wt% of encapsulated fragrance and neat perfume by total weight of said solid sheet article.
A further preferred aspect of the invention is disclosing esters included in the fragrance oil included in the fragrance composition that are present in the flexible, porous, dissolvable, scented, solid sheet article in an amount of from about 0,001wt% to about 17wt%, preferably in an amount from about 0,005wt% to about 15wt%, more preferred in an amount from 0,01wt% to about 12wt%, most preferred from about 0,02wt% to about 7,5wt% based on the total weight of the flexible, porous, dissolvable, scented solid sheet article. A preferred alternative of the invention discloses esters included in the fragrance oil included in the fragrance composition that are present in the flexible, porous, dissolvable, scented, solid sheet article in an amount of from about 0,0,01wt% to about 15wt%, preferably in an amount from about 0,1 wt% to about 10wt%, more preferred in an amount from 0,2wt% to about 5wt% based on the total weight of the flexible, porous, dissolvable, scented solid sheet article.
Another preferred aspect of the invention is disclosing aldehydes included in the fragrance oil included in the fragrance composition that are present in the flexible, porous, dissolvable, scented, solid sheet article in an amount of from about 0,001wt% to about 17wt%, preferably in an amount from about 0,005wt% to about 15wt%, more preferred in an amount from 0,01wt% to about 12wt%, most preferred from about 0,02wt% to about 7,5wt% based on the total weight of the flexible, porous, dissolvable, scented solid sheet article.
A preferred alternative of the invention discloses aldehydes included in the fragrance oil included in the fragrance composition that are present in the flexible, porous, dissolvable, scented, solid sheet article in an amount of from about 0,01wt% to about 15wt%, preferably in an amount from about 0,1 wt% to about 10wt%, more preferred in an amount from 0,2wt% to about 5wt% based on the total weight of the flexible, porous, dissolvable, scented solid sheet article.
A further preferred embodiment of the invention is disclosing esters and aldehydes included in the fragrance oil included in the fragrance composition that are present in the flexible, porous, dissolvable, scented, solid sheet article in an amount of from about 0,001wt% to about 17wt%, preferably in an amount from about 0,005wt% to about 15wt%, more preferred in an amount from 0,01wt% to about 12wt%, most preferred from about 0,02wt% to about 7,5wt% based on the total weight of the flexible, porous, dissolvable, scented solid sheet article.
A preferred alternative of the invention discloses esters and aldehydes included in the fragrance oil included in the fragrance composition that are present in the flexible, porous, dissolvable, scented, solid sheet article in an amount of from about 0,01wt% to about 15wt%, preferably in an amount from about 0,1 wt% to about 10wt%, more preferred in an amount from 0,2wt% to about 5wt% based on the total weight of the flexible, porous, dissolvable, scented solid sheet article. Another embodiment of the invention comprises a multilayer structure comprising two or more layers of the flexible, porous, dissolvable, scented, solid sheet article, wherein the flexible, porous, dissolvable, scented, solid sheet article comprises a fragrance composition comprising a fragrance oil, comprising at least one aldehyde preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehyde compounds and/or at least one ester, preferably two esters, more preferably three esters, even more preferably four esters.
A further aspect of the present disclosure comprises a process for preparing a flexible, porous, dissolvable, scented, solid sheet article, comprising the steps of: a) providing a wet pre-mixture comprising a water-soluble polymer, preferably a polyvinyl alcohol, a surfactant, a moisturizer, a fragrance composition, and water, b) mixing said pre-mixture without heating c) heating the pre mixture while mixing d) optionally cooling the wet pre-mixture to less than 60°C, preferably less than 40°C, more preferably less than 30°C, even more preferably less than 25°C e) aerating the pre mixture f) forming a sheet g) drying the sheet formed in f) at a temperature from 60°C to 150°C, preferably 70°C to 120°C, more preferred from 80°C to 110°C, most preferred from 90°C to 100°C to form said solid sheet article wherein the fragrance composition comprises a fragrance oil comprising at least one ester and/or at least one aldehyde, preferably two, more preferably three, even more preferably four esters and preferably two, more preferably three, even more preferably four aldehydes.
The surfactant, provided for the wet pre-mixture in step a) may be added to the mixture directly (purely) or pre-dissolved in water. Hereby the surfactant may be dissolved to form a solution of from 99wt% to 50wt% surfactant in water. In another preferred embodiment of the present disclosure the fragrance composition provided in the above-mentioned process in step a) for manufacturing a flexible, porous, dissolvable, scented solid sheet article is selected from the group consisting of neat fragrance compositions, encapsulated fragrance compositions and combinations thereof wherein the fragrance composition comprises a fragrance oil, comprising at least one aldehyde preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehydes and/or at least one ester, preferably two esters, more preferably three esters, even more preferably four esters.
Disclosed preferred versions of an encapsulated fragrance composition provided in step a) of the mentioned process for manufacturing a flexible, porous, dissolvable, scented, solid sheet article are selected from the group consisting of matrix encapsulated fragrance compositions, core shell encapsulated fragrance compositions consisting of one or more coats, molecular encapsulated fragrance compositions and combinations thereof, wherein core shell encapsulated fragrance compositions are preferred.
It is furthermore preferred that the fragrance composition provided in the process in step a) for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprises of an encapsulated fragrance composition, provided in a mixture of an encapsulated fragrance composition and water, called a capsule slurry. Said capsule slurry may comprise of a fragrance oil, comprising at least one aldehyde preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehydes and/or at least one ester, preferably two esters, more preferably three esters, even more preferably four esters, a shell material to form the encapsulated fragrance composition and water. The capsule slurry may also comprise a thickening agent and/or it may comprise a preservative agent.
Examples for suitable thickening agents are xanthan gum, diutan gum, cellulose, carboxymethylcellulose and the like.
In another embodiment of the invention, the capsule slurry may comprise of about 20wt% to about 70wt%, preferably about 30wt% to about 60wt%, most preferred about 35wt% to about 55wt% of fragrance oil, from about 1wt% to about 9wt%, preferably from about 2wt% to about 6wt%, most preferred from about 3wt% to about 5wt% of capsule shell material. The capsule slurry may furthermore comprise from about 0,01wt% to about 1wt%, preferably from about 0,05wt% to about 0,5wt% of thickening agent, and from about 0,1 wt% to about 5wt%, preferably from about 0,2wt% to about 2wt% of preservative agent, wherein the fragrance oil comprises at least one aldehyde preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehydes and/or at least one ester, preferably two esters, more preferably three esters, even more preferably four esters. The capsule slurry furthermore comprises water. The sum of the ingredients of the capsule slurry herein described add up to 100%.
For preparation of the fragrance capsule slurry the person skilled in the art may refer to W02022028705A1 or W02022037093.
If the fragrance composition, provided in step a) of the process described above comprises an encapsulated fragrance composition, provided as a capsule slurry, it is preferred that the amount of capsule slurry, added to the wet pre-mixture ranged from about 0,05wt% to about 10wt%, preferably from about 0,05wt% to about 8wt%, more preferred from about 0,05wt% to about 6wt% of the total weight of the wet pre-mixture.
If the fragrance composition, provided in step a) of the process described above comprises a neat fragrance, it is preferred that the amount of neat fragrance ranges from 0,01wt% to about 10wt%, preferably from about 0,05wt% to about 7wt%, more preferred from about 0,05wt% to about 5wt% of the total weight of the wet pre mixture.
It is furthermore disclosed that the water content of the capsule slurry may amount to from about 20wt% to about 70wt%, preferably from about 30wt% to about 65wt%.
Furthermore it is disclosed that the wet pre-mixture of the flexible, porous, dissolvable, scented, solid sheet article may preferably comprise from about 0,1 wt% to about 50wt%, preferably from about 1wt% to about 40wt%, more preferably from about 5wt% to about 30wt%, even more preferably from 8wt% to about 25wt%, most preferred from about 10wt% to about 20wt% of neat perfume by weight of the wet pre mixture.
Preferably the total amount of water, provided in step a) of the process of forming a wet premixture described above ranges from about 90wt% to about 50wt%, preferably from about 85wt% to about 55wt%, most preferred from about 80wt% to about 60wt%.
It is preferred that the wet pre-mixture provided in step a) preferably has a viscosity of from 25 Pa*s to 800 Pa*s, measured at 23°C and 25 s"1.
In one aspect of the invention the pH of a wet pre mixture for producing a flexible, porous, dissolvable solid sheet article may be adjusted so that a pH value from about 3,0 to 9,0, preferably 3,0 to 8,0, more preferably from 3,0 to 7,0 is obtained. In a preferred embodiment of the invention the mixing of the wet pre-mixture in step b) is performed by stirring, preferably with a speed of about 200 rpm to about 5000 rpm, more preferably from about 500 rpm to about 3500 rpm.
In a further preferred embodiment of the invention in the process described above the heating of wet pre-mixture described in step c) while mixing is done preferably at about the same speed used in step b). The wet pre-mixture in step c) may be heated to a temperature from about 60°C to about 120°C, preferably from about 70°C to about 110°C, more preferably from about 80°C to about 100°C for a time of from about 20 minutes to about 90 minutes.
It is furthermore disclosed that the cooling in step d) of the process described above for manufacturing a flexible, porous, dissolvable, scented, solid sheet article, might be performed without any cooling agent or may comprise a cooling agent such as for example ice.
It is preferred that the cooling described in step d) is executed until a temperature is obtained that is not lower than 0°C, preferably not lower than 10°C, more preferably not lower than 15°C.
In a further preferred embodiment of the invention aerating of the wet pre-mixture in step e) is done by stirring, preferably with a speed of from about 400 rpm to about 6000 rpm, more preferably from about 600 rpm to about 4000 rpm. Introducing air into the wet pre-mixture to form a foamy texture, is referred to as aerating.
In a preferred embodiment of this invention, the stability of the foam gained in this step is so high that the foam holds its shape during the drying step g). In a preferred embodiment of the disclosure the density of the wet, aerated pre-mixture in step e) may range from about 0,05 g/ml to about 0,5 g/ml.
It is furthermore disclosed that the drying described in step g) may be performed with a heating source from below the sheet, such as, but not limited to, a heating plate, or with a heating source from above the sheet, such as, but not limited to, a heating plate, or with a heating source surrounding the sheet, such as but not limited to, circulating hot air or any combinations thereof.
It is preferred that the final water content of the flexible, porous, dissolvable, scented, solid sheet article manufactured by the process described above in steps a) to g) has after the drying step g) a remaining water content of from about 0,1wt% to about 10wt%, preferably 0,5wt% to about 8wt% even more preferred from about 1wt% to about 5wt%
In a preferred embodiment of the process for manufacturing a flexible, porous, dissolvable, scented, solid sheet article, the fragrance composition provided in the wet pre-mixture consists of a neat fragrance composition and/or encapsulated fragrance compositions, preferably the encapsulated fragrance compositions are selected from the group consisting of matrix encapsulated fragrance compositions, core shell encapsulated fragrance compositions, molecular encapsulated fragrance compositions and compositions and combinations thereof, wherein the core shell encapsulated fragrance compositions are preferred.
A further preferred embodiment of the invention discloses a process for manufacturing a flexible, porous, dissolvable, scented, solid sheet article wherein the encapsulated fragrance composition, provided in the wet pre-mixture comprises a core shell encapsulated fragrance composition comprising a core and a shell wherein the ratio of core to shell is 95:5 - 70:30, preferably 95:5 - 80:20.
Suitable materials for the shell of the encapsulated fragrance composition provided in the wet pre-mixture in the process for manufacturing a flexible, porous, dissolvable, scented, solid sheet article include, but are not limited to polyethylenes, polyamides, polyamines, ployacrylamides, polystyrenes, polyvinylamines, polyvinyl formamides, polyolefins, polyvinylalcohols, polyacrylates, polymethacrylates, polyvinylacrylates, polyisoprenes polyvinylmethylacrylates, aminoplasts, polyisocyanate such as aliphatic polyisocyanates, aromatic polyisocyanates, polyvinylamines, polyvinyl formamides, Polyvinyl pyrrolidone, polyvinyl pyrrolidone co-polymers, polyvinylpyrrolidone vinyl acrylate, polyvinylpyrrolidone methacrylate, polyvinylpyrrolidone ethacrylate, polyvinylpyrrolidone vinylacrylate , polyvinyl acetal, polyvinyl butyral, polyolefins, polycarbonates, polyesters, polyethylene maleic anhydride, gelatin, shellac, epoxy resins, vinyl polymers, water-insoluble inorganics (e.g. silicas), silicones, polysiloxane, polypropylene maleic acid, polypropylene maleic acid copolymer, maleic anhydride derivatives, co-polymers of maleic anhydride derivatives, waxes, aminoplasts, (preferred polyureas, polyurethanes, polyureaurethanes, melamineformaldehyde, cross-linked melamine-formaldehyde, urea-formaldehyde, cross-linked urea formaldehyde), styrene butadiene latex, gum Arabic, alginate, sodium alginate, chitosan, casein, pectin, inulin, agar, traganth, carrageen, konjac gum, guar gum, carob bean gum, xanthan gum, paramylon, starches such as potato starch, wheat starch, corn starch, rice starch, tapioca starch, oat starch and modified starches, starch derivatives such as dextrins, maltodextrins, cyclodextrins, oligosaccharids, sugar alcohols such as sorbitol, mannitol, isomalt, maltitol, lactitol, xylitol, erythritol, gellan, glucose, glycosaminoglycans, maltitol- syrup, lactitol, polyvinylmethylether, polyallyl amines, co-polymers of polyallyl amines, polysaccharides such as cellulose and cellulose derivatives such as carboxyl methyl cellulose (CMC), carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose, microcrystalline cellulose (MCC), hemicelluloses, raffinose, xylose, polydextrose, lactulose, lichenin, chitin, chitosan, lignin, vegetable fibers, potato fibers, apple fibers, citrus fibers, bamboo fibers, extracted sugar beet fibers, oat fibers, vegetable proteins such as hemp protein, sunflower protein, pea protein, pumpkin protein, soy protein, wheat protein, barley protein, rye protein, spelled protein, gluten protein, rapeseed protein, rice protein, potato protein, corn protein, bean protein, chick pea protein, lens protein, lupine protein, peanut protein, alfalfa protein, fava beans protein, and mixtures thereof.
In a preferred embodiment of the disclosure the aldehydes included in the fragrance oil provided in the fragrance composition provided in the wet pre-mixture in the process for forming a flexible, porous, dissolvable, scented, solid sheet article according to the invention include but are not limited to 2,6,10-trimethylundec-9-enal (141-13-9; Adoxal; Farenal); alpha-,3,3-trimethyl-cyclohexanemethanolformate (25225-08-5; Aphermate); 4-(1, 1- dimethylethyl)-benzenepropanal (18127-01-0; Bourgeonal); 6-methoxy-2,6-dimethyloctanal (929253-05-4; Calypsone); 4-methoxy-alpha-methyl-benzenepropanal (5462-06-6; Canthoxal); a,2,2,6-tetramethylcyclohexenebutanal (65405-84-7; Cetonal); 8,8-dimethyl- 1 ,2,3,4,5,6,7,8-octahydro-2-naphthaldehyde + 1 ,2,3,4,5,6,7,8-octahydro-5,5-dimethyl-2- naphthalenecarboxaldehyde (68991-96-8; 68991-97-9; Cyclomyral); 4-(octahydro-4,7- methano-5H-inden-5-ylidene butanal (30168-23-1 ; Dupical); 4,8-dimethyl-4,9-decadienal (71077-31-1 ; Floral Super); 3-(4-ethylphenyl)-2,2-dimethylpropanal + 3-(2-ethylphenyl)-2,2- dimethylpropanal (67634-15-5; 67634-14-4; Florazon); beta-methyl-3-(1-methylethyl)- benzenepropanal (12509-85-5; Florhydral); methylenedioxyphenyl-methylpropanal (1205-17- 0; Helional); a,4-dimethylbenzenepropanal (41496-43-9; Jasmorange, Satinaldehyde); (Z,E)- 2,4-dimethyl cyclohex-3-ene-1-carbaldehyde (68039-49-6; 68737-61-1; Ligustral, Tripalal, Cyclal C, Vertocitral) ; 3-(4-tert-butylphenyl)butanal (80-54-6; Lilial); (1 R)-p,4-dimethyl-3- cyclohexene-1-propanal (199445-85-7; Liminal); (4R)-4-(1-Methylethyl)-1-cyclohexene-1- propanal (1378867-81-2; Lilybelle); (4S)-4-(1-Methylethyl)-1-cyclohexene-1-propanal (1378867-82-3; Lilybelle Isomer); 4-(4-Hydroxy-4-methyl-pentyl)-3-cyclohexen-1- carboxyaldehyde (130066-44-3; Lyral); 6-methyl-1-8-yl-methyleth l-bicyclo[2.2.2]oct-5-ene-2- carboxaldehyde (67845-30-1 ; Maceal); (±)-2,6-Dimethyl-5-heptenal (106-72-9; Melonal); (E)- 2,6,10-trimethylundeca-5,9-dienal (54082-68-7; Oncidal); 6,6-Dimethyl-2-norpinene-2- propionaldehyde (33885-51-7; Pinoacet aldehyde); 1-methyl-4-(4-methyl-3- pentenyl)cyclohex-3-ene-1-carboxaldehyde + 6,6-dimethyl-2-norpinene-2-propionaldehyde (119652-81-2; 52475-86-2; Precyclemone B); 3-phenylbutanal (16251-77-7; Trifernal); octahydro-5-methoxy-4,7-methano-1 H-indene-2-carboxaldehyde (86803-90-9; Scentenal); rel-(3aR,4R,5R,7R,7aR)-octahydro-4,7-methano-1 H-indene-5-carboxaldehyde (145374-28-3; Vertral); 4-(4-methyl pent-3-enyl) cyclohex-3-ene-1-carbaldehyde (37677-14-8; Vertomugal); Hexanal; Heptanal; Octanal; 2-Nonen-1-al; Nonanal; Decanal; Undecenal; 2-Methyldecanal; 10-Undecenal; Undecanal; Dodecanal; 2-Methylundecanal; Anisic Aldehyde; Benzaldehyde; Citral; Citronellal; Cinnamaldehyde; Cuminic Aldehyde; Cyclamen aldehyde; Dihydrocitronellal; trans-2-dodecanal; Ethyl Vanillin; Geranial; Heliotropin/Piperonal; trans-2- hexenal; Alpha-hexyl-cinnamic aldehyde; Hydratropic Aldehyde; Hydroxy Citronellal; Isocyclocitral; Methoxycitronellal; Neral; Phenylacetaldehyde; Tangerinal; Cyclamen Homoaldehyde and Vanillin.
In another preferred embodiment of the disclosure the esters included in the fragrance oil provided the fragrance composition provided in the wet pre-mixture in the process for forming a flexible, porous, dissolvable, scented, solid sheet article according to the invention include, but are not limited to cis-2-tert-butylcyclohexyl acetate + (2-tert-butylcyclohexyl) acetate (20298-69-5; 88-41-5; Argumex HC I LC); ethyl 3-methyl-3-phenyloxirane-2-carboxylate (77- 83-8; Aldehyde C16 so-called); prop-2-enyl 2-cyclohexyloxyacetate (68901-15-5; Cyclogalbanat); methyl 2,4-dihydroxy-3,6-dimethylbenzoate (4707-47-5; Evernyl); 4- methylpentan-2-yl (E)-but-2-enoate (35206-51-0; Frutinat); ethyl 2-ethyl-6,6- dimethylcyclohex-2-ene-1-carboxylate (57934-97-1; 77851-07-1; Givescone); methyl 3-oxo- 2-pentylcyclopentaneacetate (24851-98-7; Hedione); 2-(1-(3',3'-dimethyl-1'- cyclohexyl)ethoxy)-2-methyl propyl propanoate (141773-73-1; Helvetolide); 3a, 4, 5, 6, 7,7a- hexahydro-4,7-methanoinden-6-yl acetate (5413-60-5; Herbalflorat); 3a, 4, 5, 6, 7,7a- hexahydro-4,7-methanoinden-6-yl acetate (5413-60-5; Herbalflorat); [(Z)-hex-3-enyl] methyl carbonate (67633-96-9; Leafovert); ethyl 2-methylpentanoate (39255-32-8; Manzanate); 2-[1- (3,3-Dimethylcyclohexyl)ethoxy]-2-oxoethyl propionate (236391-76-7; Romandolide); ethyl 2- cyclopent-2-en-1-ylacetate (15848-49-4; Sultanene); (1S,2R,5S)-5-methyl-2-(1-methylethyl)- cyclohexanolacetate + [(1 R,2S,5R)-5-methyl-2-propan-2-ylcyclohexyl]-acetate (29066-34-0; 89-48-5; Symfresh RF I Menthylacetate); 3-hydroxy-2,2,4-trimethylpentyl 2- methylpropanoate (25265-77-4; Symfresh NX); (4-methyl-4-phenylpentan-2-yl)-acetate (68083-58-9; Vertikolacetat); Allyl Amyl Glycolate; Allyl Caproate; Allyl Cyclohexyl Propionate; Allyl Heptoate; Benzyl Acetate; Benzyl Salicylate; Citronellyl Acetate; Dimethyl Benzyl Carbinyl Acetate; Dimethyl Benzyl Carbinyl Butyrate; Ethyl acetoacetate; Ethyl Butyrate; Ethyl Caproate; Trans/Cis-2,4-Ethyl Decadienoate; Ethyl-2-M ethyl Butyrate; Ethylene Brassylate; Geranyl Acetate; Herbyl Propionate; Cis/Trans- 3- Hexenyl Acetate; Cis- 3 Hexenyl Acetate; Cis-3 Hexenyl Butyrate; Cis-3-Hexenyl Isobutyrate; Cis-3-Hexenyl Salicylate; Hexyl Acetate; Hexyl Butyrate; Hexyl Isobutyrate; Hexyl Salicylate; Isoamyl Acetate; Isobornyl Acetate; Isobutyl Acetate; Isoeugenyl Acetate; Linalyl Acetate; Methyl Octin Carbonate; Neryl Acetate; Phenylethyl Butyrate; Phenylethyl Cinnamate; Prenyl Acetate; Styralyl Acetate and Methylanthranilat.
In one preferred embodiment of the invention the fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprises from about 0,05wt% to about 99,5wt%, preferably from about 0,1 wt% to about 90wt%, more preferably from about 0,15% to about 75wt%, even more preferably from about 0,2 to about 50wt%, even more preferred about 0,5wt% to about 35wt%, even more preferred about 0,5wt% to about 25wt%, most preferred about 0,5wt% to about 15wt% of esters based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
Another preferred embodiment of the invention the fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprises from about 1wt% to about 99wt%, preferably from about 3wt% to about 90wt%,, more preferably from about 5wt% to about 85wt%, even more preferred from about 7wt% to about 80wt% most preferred from about 8wt% to about 75wt% of esters based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
In a further preferred embodiment of the invention the fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprises from about 2wt% to about 50wt%, preferably from about 3wt% to about 40wt%, more preferably from about 3,5wt% to about 35wt%, even more preferred from about 4,0wt% to about 30wt%, most preferred from about 5wt% to about 25% of esters based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
A further preferred embodiment of the invention discloses a fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprising 0,05wt% to 99,5wt%, preferably from about 0,1 wt% to about 90wt%, more preferably from about 0,15% to about 75wt%, even more preferably from about 0,2 to about 50wt%, even more preferred from about 0,5wt% to about 35wt%, even more preferred from about 0,5wt% to about 25wt%, most preferred from about 0,5wt% to about 15wt% of aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
Another preferred embodiment of the invention discloses a fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article that comprises from about 1wt% to about 99wt%, preferably from about 3wt% to about 90wt%, more preferably from about 5wt% to about 85wt%, even more preferred from about 7wt% to about 80wt% most preferred about 8wt% to about 75wt% of aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
A further preferred embodiment of the invention discloses a fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprising from about 2wt% to about 50wt%, preferably from about 3wt% to about 40wt%, more preferably from about 3,5wt% to about 35wt%, even more preferred from about 4,0wt% to about 30wt%, most preferred from about 5wt% to about 25% of aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
A further preferred embodiment of the invention discloses a fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprising from about 0,05wt% to about 99,5wt%, preferably from about 0,1 wt% to about 90wt%, more preferably from about 0,15% to about 75wt%, even more preferably from about 0,2 to about 50wt%, even more preferred about 0,5wt% to about 35wt%, even more preferred about 0,5wt% to about 25wt%, most preferred about 0,5wt% to about 15wt% of esters and aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
Another preferred embodiment of the invention discloses a fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article that comprises from about 1wt% to about 99wt%, preferably from about 3wt% to about 90wt%, more preferably from about 5wt% to about 85wt%, even more preferred from about 7wt% to about 80wt% most preferred about 8wt% to about 75wt% of esters and aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
A further preferred embodiment of the invention discloses a fragrance oil provided in the fragrance composition provided in the wet pre-mixture for the process for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprising from about 2wt% to about 50wt%, preferably from about 3wt% to about 40wt%, more preferably from about 3,5wt% to about 35wt%, even more preferred from about 4,0wt% to about 30wt%, most preferred from about 5wt% to about 25% of esters and aldehydes based on the total mass of fragrance ingredients of the fragrance oil included in the fragrance composition.
Also, in a further preferred embodiment of the encapsulated fragrance composition provided for the wet pre-mixture for manufacturing a flexible, porous, dissolvable, scented solid sheet article comprises from about 0,01wt% to about 50wt%, preferably from about 0,02wt% to about 30wt%, more preferably from about 0,05wt% to about 10wt%, most preferably from about 0,1 wt% to about 10wt% of encapsulated fragrance by total weight of said solid sheet article.
In another preferred embodiment of the invention, the fragrance composition included in a flexible, porous, dissolvable, scented, solid sheet article comprises from about 0,01wt% to about 30wt%, preferably from about 0,02wt% to about 25wt%, more preferably from about 0,05wt% to about 15wt%, even more preferred about 0,08wt% to about 15wt%, most preferred about 0,08wt% to about 10wt% of encapsulated fragrance by total weight of said solid sheet article.
Definitions:
All percentage values and ratios in this disclosure are related to weight if not otherwise stated.
A flexible, porous, dissolvable, scented, solid sheet article mentioned in this disclosure is equal to the term laundry sheet. For further characteristics of such an article W02022037093A1 is mentioned as a reference for the person skilled in the art if not described differently in this disclosure.
The term perfume and the term fragrance herein used in this disclosure are used synonymously. According to the definition of this disclosure a perfume oil or fragrance oil comprises one or more fragrance ingredient(s). A perfume or fragrance oil is formed by at least one odorous component called a fragrance ingredient and might comprise more fragrance ingredients. A fragrance oil may also comprise one or more odourless component(s), that are also defined as fragrance ingredients such as for example, but not limited to solvents. Examples of such solvents included in a fragrance oil may include but are not limited to dipropylenglycole, triethylcitrate, isopopylmyristate, benzylbenzoate, water, triglyceride, and any combinations thereof.
The term neat perfume or neat fragrance according to this disclosure means fragrance oil that is not encapsulated in any form, but can be either provided in the wet pre-mixture for forming a flexible, porous, dissolvable, scented, solid sheet article by adding it directly to the wet pre-mixture as described in step a) in the process above, or it is also possible to apply the neat perfume to the flexible, porous, dissolvable, scented sheet article after the drying step described in step d) of the process for manufacturing a flexible, porous, dissolvable, scented, solid sheet article.
In this disclosure the expression “encapsulated fragrance composition” is equal to the term fragrance capsules and is to be understood as a general term, wherein a preferred embodiment of encapsulation included in an encapsulated fragrance composition according to this invention is a core shell encapsulation. A core-shell encapsulated fragrance composition comprises a core, which comprises a fragrance oil according to this invention, and a shell. The core may also be referred to as inner phase. The shell material may also be called wall material or may be referred to as outer phase, and it surrounds the core at least partially. The shell material may also surround the core fully. The shell material may be permeable, semi-permeable or non-permeable. It may comprise one or more layers of one or more shell material(s). A preferred version of encapsulated fragrance compositions are fragrance microcapsules (or PMC = perfumed microcapsules). The diameter of said PMC may range from about 1 pm to 1000 pm. The thickness of the shell material may range from about 0,5 pm to about 150 pm. Further information might be gained by these literature references: W02022028705A1 and W02020114571A1.
The term ester(s) which are provided in the fragrance composition according to this invention is a fragrance ingredient with at least one functional ester-group.
The term aldehyde(s) which are provided in the fragrance composition according to this invention is a fragrance ingredient with at least one functional aldehyde-group. The term wet pre-mixture is defined as the mixture of all ingredients provided in the process of manufacturing a flexible, porous, dissolvable, scented, solid sheet article and water.
A water-soluble polymer according to this invention included in a flexible, porous, dissolvable, scented solid sheet article may serve as a carrier material and a film former, it may be the structure giving material for other ingredients, preferably active ingredients (e.g., surfactants, emulsifiers, builders, chelates, perfumes, perfume microcapsules, colourants, and the like). Preferably the wet pre mixture provided for manufacturing a flexible, porous, dissolvable, scented, solid sheet article comprises from about 3% to about 20% preferably about 5% to about 15%, even more preferred about 7% to about 10% by weight of said water-soluble polymer. Preferably the water-soluble polymer gives enough support to the flexible, dissolvable, porous, scented, solid sheet article to hold its shape and/or structure given to the polymer in the manufacturing process described in step f) of the process of manufacturing a flexible, porous, dissolvable, scented, solid sheet article, while being nontoxic, environmentally friendly and easy to access and use in a process, described above while at the same time providing a large surface. It is preferred that the water-soluble polymer may be loaded with any ingredients herein described in this disclosure.
After drying, it is preferred that the water-soluble polymer is present in the flexible, porous, dissolvable, scented, solid sheet article of the present disclosure in an amount ranging from about 5wt% to about 50wt%, preferably from about 8wt% to about 40wt%, more preferably from about 10wt% to about 30wt%, most preferred from about 11wt% to about 25wt% by total weight of the disclosed article. In a particularly preferred embodiment of the present disclosure, the total amount of the water-soluble polymer, present in the flexible, porous, dissolvable, scented, solid sheet article described in this disclosure is no more than 25wt% by total weight of said sheet article.
Suitable water-soluble polymers for a flexible, porous, dissolvable, scented solid sheet article according to this disclosure may include, but are not limited to synthetic polymers including polyvinylalcohols, polyvinylpyrrolidones, polyalkylene oxides, polyacrylates, caprolactames, polymethacrylates, polymethylmethacrylates, polyacrylamides, polymethacrylamides, polydimethylacrylamides, polyethylene glycol monomethacrylates, copolymers of acrylic acid and methyl acrylate, polyurethanes, polycarboxylic acids, polyvinylacetates, polyesters, polyamides, polyamines, polyethyleneimines, maleic - I (acrylate or methacrylate) copolymers, copolymers of methylvinyl ether and of maleic anhydride, copolymers of vinyl acetate and crotonic acid, copolymers of vinylpyrrolidone and of vinyl acetate or caprolactam, vinyl pyrrolidine and vinyl acetate copolymers, copolymers of anionic, cationic and amphoteric monomers, and combinations thereof.
The water soluble polymer of the present disclosure may also be selected from naturally sourced polymers including those of plant origin examples of which include karaya gum tragacanth gum, gum Arabic, ace mannan, kojac mannan, aracia gum, gum ghatti, whey protein isolate, and soy protein isolate; seed extracts including guar gum, locust bean gum, quince seed, and psyllium seed; Seaweed extracts such as carrageenan, alginates, and agar agar; fruit extracts (e.g. pectines); those of microbial origin including xanthan gum, gellan gum, pullulan, hyaluronic acid, chondroitin sulfate, and dextran; and those of animal origin including casein, gelatin, keratin hydrolysates, sulfonic keratins, collagen, glutelin, glucagons, guten, zein, and shellac.
Modified natural polymers can also be used as water soluble polymers in the present disclosure. Suitable modified natural polymers include, but are not limited to, cellulose derivatives such as hydroxypropylmethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, methylcellulose, hydroxypopylcellulose, ethylcellulose, carboxymethylcellulose, cellulose acetate phthalate, nitrocellulose and other cellulose ethers/esters and guar derivatives such as hydroxypropyl guar.
Preferred water-soluble polymers of the present disclosure include polyvinyl alcohols, polyvinyl pyrrolidones, polyalkene oxides, starch and starch derivatives, pullulan, gelatin, hydroxypropylmethylcelluloses, methylcelluloses, and carboxymethylcelluloses. More preferred water-soluble polymers of the present disclosure include polyvinyl alcohols, and hydroxypropylmethylcelluloses.
Most preferred water-soluble polymers of the present disclosure are polyvinyl alcohols characterized by a degree of hydrolysis ranging from about 40% to about 100%, preferably from about 50% to about 95%, more preferably from about 65% to about 92%, most preferably from about 70% to about 90%. Commercially available polyvinyl alcohols include those from Celanese Corporation (Texas USA) under the trade name SELVOL including, but not limited to SELVOL 523, SELVOL 530, SELVOL 540, SELVOL 518, SELVOL 513, SELVOL 508, SELVOL 504; those from Kuraray Europe GmbH (Frankfurt, Germany) under the tradename POVAL, and PVA 1788 (also referred to as PVA BP17) commercially available from various suppliers and combinations thereof. In particularly preferred embodiments of the present disclosure the flexible, porous, dissolvable, scented, solid sheet article comprises of a polyvinyl alcohol having a molecular weight average ranging from 80 000 Dalton to 150 000 Dalton and a preferred degree of hydrolysis from about 80% to 90%.
In another embodiment of this disclosure the flexible, porous, dissolvable, scented, solid sheet article comprises of at least one surfactant. The surfactant may function as emulsifying agent during the aeration process to create a sufficient number of stable bubbles for forming the desired structure of the flexible, porous, dissolvable, solid sheet article. Furthermore, the surfactant may serve as an active ingredient in the flexible, porous, dissolvable, scented, solid sheet article e.g. for cleaning the laundry.
In a preferred embodiment of the present disclosure, the surfactant included in the flexible, porous, dissolvable, scented, solid sheet article can be selected from the group of anionic surfactants, non-ionic surfactants, cationic surfactants, zwitterionic surfactants, amphoteric surfactants, polymeric surfactants, and any combinations thereof.
According to this disclosure the surfactant may function on one hand as an active ingredient included in a flexible, porous, dissolvable, scented, solid sheet article, on the other hand the surfactant may serve as a stabilizer of the foam both in the wet pre-mixture as well as in the flexible, porous, dissolvable, solid sheet article.
Examples of anionic surfactants are alkyl sulfates, alkyl ether sulfates, linear or branched alkyl alkoxy sulfates, linear or branched alkylethoxy sulfates, B-alkyloxy alkane sulfonates, sulphated monoglycerides, sulfonated olefins, alkyl aryl sulfonates, primary or secondary alkane sulfonates, alkyl sulfosuccinates, acyl taurates, acyl isethionates, alkyl glycerylether sulfonate, sulfonated methyl esters, sulfonated fatty acids, alkyl phosphates acyl glutamates, acyl sarcosinates, alkyl sulfoacetates, acylated peptides, alkyl ether carboxylates, acyl lactylates, anionic fluorosurfactants, sodium lauroyl glutamate, C6-20 linear alkylbenzene sulfonate, sodium trideceth sulfates, and combinations thereof.
Preferred examples of anionic surfactants suitable for use in porous, flexible, dissolvable, scented, solid sheet article are disodium laurylsulfosuccinate, diammonium laurylsulfosuccinate, tetrasodium N-(1,2-dicarboxyethyl)-N-octadecylsulfosuccinnate; diamyl ester of sodium sulfosuccinic acid; dihexyl ester of sodium sulfosuccinic acid, dioctyl esters of sodium sulfosuccinic acid; ammonium lauryl sulfate, ammonium laureth sulfate, ammonium laureth-1 sulfate, ammonium laureth-2 sulfate, ammonium laureth-3 sulphate, triethanolamine, lauryl sulfate, triethanolamine laureth sulfate, triethanolamine laureth-1 sulfate, monoethanolamine lauryl sulfate, monoethanolamine laureth sulfate, diethanolamine lauryl sulfate, diethanolamine laureth sulfate, lauric monoglyceride sodium sulfate, sodium lauryl sulfate, sodium laureth sulfate, potassium lauryl sulfate, potassium laureth sulphate, sodium lauryl sarcosinate, sodium lauroyl sarcosinate, lauryl sarcosine, cocoyl sarcosine, ammonium cocoyl sulfate, ammonium lauroyl sulfate, sodium cocoyl sulphate, sodium lauroyl sulfate, potassium cocoyl sulphate, monoethanolamine cocoyl sulfate, sodium tridecyl benzene sulfonate, soudium dodecyl benzene sulfonate, sodium cocoyl isethionate, ammonium decyl sulfate, sodium decyl sulfate, ammonium undecyl sulfate, ammonium undecyl sulphate and combinations thereof.
Examples of non-ionic surfactants suitable for use in a flexible, porous, dissolvable, scented, solid sheet article are any conventional non-ionic surfactants, including but not limited to alkyl alkoxylated alcohols, alkyl alkoxylated phenols, alkyl polysaccharides, polyhydroxy fatty acid amides, alkoxylated fatty acid esters sucrose esters, sorbitan esters and alkoxylated derivatives of sorbitan esters, amine oxides, and the like.
Further examples of nonionic surfactants are C6-C12 alkyl phenol condensates with ethylene oxide/propylene oxide block polymers; C14-C22 mid-chain branched alcohols; C14-C22 midchain branched alkoxylates, BAEX, wherein x is 1-30; alkyl poly saccharides specifically alkyl polyglycosides; polyhydroxy fatty acid amides; and ether capped poly(oxyalkylated) alcohol surfactants, preferably C6-C20 linear or branched alkylalkoxylated alcohols.
Examples of cationic surfactants suitable for use in a flexible, porous, dissolvable, scented solid sheet article include but are not limited to quaternary ammonium compounds such as alkylated quaternary ammonium compounds, ring or cyclic quaternary ammonium compounds, aromatic quaternary ammonium compounds, diquaternary ammonium compounds, alkoxylated quaternary ammonium compounds, amidoamine quaternary ammonium compounds, ester quaternary ammonium compounds, and mixtures thereof.
Preferred examples of cationic compounds are diester quaternary ammonium compounds, C12-22 mono/di-alkyl quaternary ammonium compounds, C12-C22 mono-alkyl amine compounds, and combinations thereof. Further preferred examples of cationic surfactants are behenyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, lauryl trimethyl ammonium chloride, hydrogenated tallow alkyl trimethyl ammonium chloride, dimethyl hydroxyethyl lauryl ammonium chloride, dialkyl (14- 18) dimethyl ammonium chloride, ditallow alkyl dimethyl ammonium chloride, dicetyl dimethyl ammonium chloride, N,N-di(acyl-oxyethyl)-N,N-dimethylammonium chloride, N,N-di(acyl- oxyisopropyl)-N , N-dimethylammonium methylsulfate, N, N-di(acyl-oxyethyl)-
N.Nmethylhydroxyethylammonium methylsulfate, and combinations thereof.
Examples of amphoteric surfactants suitable for use in a flexible, porous, dissolvable, scented, solid sheet article are broadly described as derivatives of aliphatic secondary and tertiary amines in which the aliphatic radical can be a straight or branched chain and wherein one of the aliphatic substituents contains from about 8 to 18 carbon atoms and one contains an anionic water solubilizing group, e.g. carboxy-, sulfonate-, sulfate-, phosphate-, phosphonate-group. Examples of compounds falling within this definition are sodium 3- dodecyl-aminopropionate, sodium 3-dodecylaminopropane sulfonate, sodium lauryl sarcosinate, N-alkyltaurines (e.g. by reacting dodecylamine with sodium isethionate and N- higher alkyl aspartic acids).
Preferred examples of amphoteric surfactants suitable for use in a flexible, porous, dissolvable, scented, solid sheet article are sodium cocaminopropionate, sodium cocaminodipropionate, sodium cocamphoacetate, sodium cocamphohydroxypropylsulfonate, sodium cocamphopropionate, sodium cornamphopropionate, sodium lauraminopropionate, sodium lauramphoacetate, sodium lauramphohydroxypropylsulfonate, sodium lauramphopropionate, sodium lauramphoacetate, sodium lauramphohydroxypropylsulfonate, sodium lauramphopropionate, sodium cornamphopropionate, sodium lauriminodipropionate, ammonium cocaminopropionate, ammonium cocaminodipropionate, ammonium cocamphoacetate, ammonium cocamphohydroxypropylsulfonate, ammonium cocamphopropionate, ammonium cornamphopropionate, ammonium lauriminopropionate, ammonium lauramphoacetate, ammonium lauramphohydroxypropylsulfonateammonium lauramphopropionate, ammonium cornamphopropionate, ammonium lauriminodipropionate, triethanolamine cocaminopropionate, triethanolamine cocaminodipropionate, triethanolamine cocamphopropionate, triethanolamine cornamphopropionate, triethanolamine lauraminopropionate, triethanolamine lauramphoacetate, triethanolamine lauramphohydroxypropylsulfonate, triethanolamine lauramphopropionate, triethanolamine cornamphopropionate, triethanolamine lauriminodipropionate, cocoamphodipropionic acid, disodium capryloamphodiacetate, disodium dicarboxyethylcocopropylenediamine, disodium laureth-5 carboxyamphodiacetate, disodium lauimonodipropionate, disodium lauramphodiacetate, disodium cocamphodipropionate, disodium dicarboxyethylcocopropylenediamine, disodium laureth-5 caboxyamphodiacetate, disodium lauriminopropionic acid, lauroamphodipropionic, lauryl aminopropylglycine, lauryl diethylenediaminoglycine and combinations thereof. Examples for Zwitterionic surfactants suitable for use in a flexible, porous, dissolvable, scented, solid sheet article are broadly described as derivatives of aliphatic quaternary ammonium, phosphonium, and sulfonium compounds, in which the aliphatic radicals can be a straight or branched chain, and wherein one of the aliphatic aliphatic substituents contains from about 8 to 18 carbon atoms and one contains an anionic group e.g. carboxy-, sulfonate, sulfate-, phosphate-, or phosphonate-group.
Examples for polymeric surfactants suitable for use in a flexible, porous, dissolvable, scented, solid sheet article are block copolymer of ethylene oxide and fatty alkyl residues, block copolymers of ethylene oxide and propylene oxide, hydrophobically modified polyacrylates hydrophobically modified celluloses, silicone polyethers, silicone copolyol esters, diquaternary polydimethylsiloxanes, and co-modified amino/polyether silicones.
In a preferred embodiment the amount of surfactant in a flexible, porous, dissolvable, scented, solid sheet article may be present in an amount of about 10% to about 70%, preferably from about 20% to about 65%, more preferred from about 40% to about 60% by total weight of a flexible, porous, dissolvable, solid sheet article.
Another preferred embodiment of the invention comprises a flexible, porous, dissolvable, scented, solid sheet article comprising a moisturizer. In a preferred embodiment the amount of the moisturizer in the flexible, porous, dissolvable, solid sheet article ranges from about 1% to 65%, preferably from about 10% to about 65%, more preferably from about 20% to about 50%, most preferred from about 22% to about 40% by total weight of the flexible, porous, dissolvable, solid sheet article.
According to this disclosure a moisturizer may have the function of providing enough moisture in the flexible, dissolvable, porous, scented, solid sheet article to support the flexibility and to keep it, resulting in a storage stability of the article. In other disclosures the moisturizer may be referred to as plasticizer.
Suitable moisturizers include but are not limited to polyols such as for example glycerin, diglycerin, ethylene glycol, polyethylene glycol, propylene glycol, butylene glycol, pentylene glycol, glycerol derivatives, glycidol, cyclohexane dimethanol, diols such as preferably 1,2- propanediol, 1,2-butanediol, 1 ,2-hexanediol, 1,2-octanediol, 1 ,2-decanediol, 1,2- dodecanediol, 2,2,4-trimethylpentane-1,3-diol, pentaerythriol, urea, sugar alcohols, mono-, di- and oligo-saccharides, ascorbic acid, sorbates, ethylene bisformamide and amino acids. Furthermore, suitable moisturizers include, but are not limited to copolyols and polycarboxylic acids such as citric acids, maleic acid, succinic acid, polyacrylic acid and polymaleic acid. Suitable moisturizers also may include but are not limited to polyesters such as for example glycerol triacetate, acetylated monoglyceride, diethyl phthalate, triethyl citrate, tributyl citrate, acetyl triethyl citrate, acetyl tributyl citrate. More suitable moisturizers include but are not limited to dimethicone, alkyl and allyl phthalates, naphtalates, lactates, lactic acid, sodium pyrrolidone carboxylic acid, sodium hyaluronate, hyaluronic acid, soluble collagen, modified protein, monosodium L-glutamate, alpha hydroxyl acids, beta hydroxyl acids such as for example glutamic acid, aspartic acid and lysine, hydrogen starch hydrolysates and mixtures thereof.
For reasons of completeness, it is mentioned that mineral oil is also suitable for use as a plasticizer / moisturizer in a flexible, porous, dissolvable, scented, solid sheet article.
In addition to the above-described ingredients the flexile, porous, dissolvable, scented, solid sheet article of the present disclosure may comprise one or more additional ingredients. Such additional ingredients may be selected from the group consisting of fabric care actives, dishwashing actives, hard surface cleaning actives, beauty care actives, skin care actives, hair care actives, personal cleansing actives, oral care actives, feminine care actives, baby care actives, a bittering agent and/or any combinations thereof.
In a preferred embodiment fabric care actives, suitable for the invention of the present disclosure may include, but are not limited to organic solvents such as linear or branched C1- C8 alcohols, diols, glycerols, triols or glycols, lower amine solvents such as C1-C4 alkanolamines, carriers, hydrotropes, builders, chelants, dispersants, enzymes and enzyme stabilizers, catalytic materials, bleaches and bleach activators, colorants such as pigments and dyes, brighteners, dye transfer inhibiting agents, clay soil removal/anti-redeposition agents, structurants, rheology modifiers, suds suppressors, processing aids, fabric softeners, antimicrobial agents and the like. Especially preferred are ingredients such as 1,2- propanediol, ethanol, glycerol, monoethanolamine, triethanolamine, and mixtures thereof.
The wet pre mixture, provided to manufacture a flexible, porous, dissolvable, scented, solid sheet article may also comprise fabric care actives, beauty care actives, skin care actives, personal cleansing actives, bittering agent(s) and/or any combinations thereof.
Suitable bittering agents include a denatonium salt or a derivative thereof. In a preferred embodiment one or more bittering agent(s) is chosen from the group consisting of denatonium chloride, denatonium citrate, denatonium saccharide, denatonium carbonate, denatonium acetate, denatonium benzoate, and mixtures thereof.
In another embodiment of the invention the bittering agent is natural bitter substance chosen from the group consisting of glycosides alkaloids, amino acids, isoprenoides, and mixtures thereof. Preferred bittering agents according to this invention may include but are not limited to such as Quercetin, Naringin, Aucubin, Amarogentin, Dihydrofoliamentin, Gentiopicrin, Swertiamarin, Swerosid, Gentioflavosid, Centaurosid, Methiafolin, Harpagoside, Centapikrin, Sailicin, Kondurangin, Absinthin, Artabsin, Cnicin, Lactucin, Lactucopicrin, Salonitenolid, a- thujone, B-thujone, Desoxy Limonene, Limonin, Ichangin, iso-Obacunoic Acid, Obacunone, Obacunoic Acid, Nomilin, Ichangin, Nomilinoic Acid, Marrubin, Pramarrubin, Carnosol, Carnosic Acid, QUassin, Quinine hydrochloride, Quinine sulfate, Quinine hydrochloride, Columbine, Caffeine, Threoine, Methionine, Phenylalanine, Tryptophan, Arginine, Histidine, Valine, Aspartic Acid, Sucrose octaacetate, quinine bisulfate, hop extract, and mixtures thereof.
Another embodiment of the invention discloses the use of starches in addition to water- soluble polymer. In such a case a polyvinyl alcohol would be the preferred water-soluble polymer. A starch may be used as a filler material. The purpose of using starch as an additive is, to reduce the amount of water-soluble polymer necessary to form a flexible, porous, dissolvable, scented, solid sheet article. An amount of starch that is too high may compromise the solubility and structural integrity of the flexible, porous, dissolvable, scented, solid sheet article. The amount of starch used to form a flexible, porous, dissolvable, scented, solid sheet article is preferably less than 20wt%, more preferably less than 10wt%, even more preferably less than 5wt%, most preferred less than 1wt% of starch. Suitable starches for this invention may include but are not limited to corn starch, potato starch, wheat starch, rice starch, tapioca starch, rye starch, pea starch, barley starch.
Physical characteristics of an improved porous, flexible, dissolvable, scented, solid sheet article.
A flexible, porous, dissolvable, scented, solid sheet article according to the invention can be characterized by the following characteristics:
The flexible, porous, dissolvable, scented, solid sheet article may have an open cell content of about 80% to about 100%, preferably from 85% to about 99%, more preferably from about 90% to about 98%. It may furthermore have a pore size from about 100 pm to about 2000 m, more preferably from about 150 pm to about 1000 pm, more preferably from 200 pm to about 600 pm.
A high open cell content as described above as well as a small pore size is preferred, to gain as much surface area as possible. This allows a very high density of active laundry ingredients that can be loaded onto the foamy framework structure of the flexible, porous, dissolvable, scented, solid sheet article.
Preferably the flexible, porous, dissolvable, scented, solid sheet article may have a cell wall thickness of from about 5 pm to about 200 pm, preferably from about 10 pm to about 100 pm, more preferably from about 10 pm to about 80 pm. The mentioned area is preferred to give enough stability to the flexible, porous, dissolvable, scented, solid sheet article. At the same time, it is preferred that the cell wall is not so thick as to lower the relative surface area.
A flexible, porous, dissolvable, scented, solid sheet article according to this invention may contain some water, more precisely from about 0,5% to about 25%, preferably 1% to about 20%, more preferably about 3% to about 10% of final moisture content. This moisture content allows the flexible, porous, dissolvable, scented, solid sheet article to contain its flexibility without losing its integrity and shape.
Furthermore, the flexible porous dissolvable, scented, solid sheet article according to this invention may have a specific surface area of about 0,03 m2/g to about 0,25 m2/g, preferably from about 0,04 m2/g to about 0,22 m2/g, more preferably from about 0,05 m2/g to about 0,2 m2/g, most preferably from about 0,1 m2/g to about 0,18 m2/g.
In some embodiments of the invention the flexible, porous, dissolvable, scented, solid sheet article may have a density ranging from about 0,05 g/cm3 to about 0,5 g/cm3, preferably from about 0,06 g/cm3 to about 0,4 g/cm3, more preferably from 0,07 g/cm3 to about 0,2 g/cm3, most preferred from about 0,08 g/cm3 to about 0,15 g/cm3.
For suitable measuring methods to determine these parameters of the flexible, porous, dissolvable, scented, solid sheet article we refer to W02022/037093.
The final consumer laundry product may comprise one or more flexible, porous, dissolvable, scented, solid sheet articles. It may comprise from about 4 to about 50, preferably 5 to about 40, more preferably from about 6 to about 30 of such flexible, dissolvable, porous, scented, solid sheet articles. The described sheet articles may be stacked, rolled, or arranged in any other way pleasing to the costumer eye without losing its quick dissolving properties. Combining two or more flexible, porous, dissolvable, scented, solid sheet articles may also provide a functional advantage in creating for example, but not limited to one or more pockets or pouches that can be filled with one or more benefit agent(s).
Furthermore, the flexible, porous, dissolvable, scented, solid sheet article may comprise a colour. In a preferred embodiment the colour is chosen to appeal to the costumer and/or to be associated with a certain quality by customers.
In another embodiment of the invention two or more flexible, porous, dissolvable, scented, solid sheet articles are combined and coloured, preferably in different colours, making the final costumer laundry product even more appealing to the customer or to make an even stronger association with a desired quality the multicoloured product would inspire.
A further embodiment of the invention comprises one or more flexible, porous, dissolvable, scented, solid sheet articles that may have been given any two- or three-dimensional form or shape that might be desirable considering either the functionality of the final consumer laundry product or the appeal of such product for the customer.
Examples
Example 1: Basic formulation for manufacturing a flexible, porous, dissolvable, scented, solid sheet article
Table 1: Ingredients for producing a flexible, porous, dissolvable, scented, solid sheet article
The ingredients from table 1 were weighed into a beaker, then covered with a lid and mixed with a Speed Mixer (I KA Eurostar 20 Highspeed) at 750 rpm for 3 minutes until the mixture was homogenous. The mixture was heated up until 90°C for 30 minutes while stirring the mixture at 750 rpm. Afterwards the mixture was cooled down over a period of 60 minutes until the mixture reached a temperature of 23°C. For aerating, the mixture was stirred with a speed of 6000 rpm. It resulted in the creation of fine foam. The foam was spread on a heating plate covered with aluminium foil. The foam had a height of less than 10 mm. The sheet was dried on a hot plate covered with aluminium foil for 15 minutes at 90°C - 100°C.
Example 2: Perfume compositions provided in the flexible, porous, dissolvable, solid sheet article.
The sheet articles, described in examples 1 and 2 were produced with the perfume compositions I.) - V.) l.) Basic perfume composition
Table 2: Perfume composition I) ll.) Basic perfume composition containing 10 % Terpenes
Table 3: Perfume composition II)
III.) Basic perfume composition containing 10 % Ketones
Table 4: Perfume composition III)
IV.) Perfume composition containing 10 % Esters
Table 5: Perfume composition IV)
V.) Perfume composition containing 10 % Aldehydes
Table 6: Perfume composition V)
Example 3: Effect of the sheet article on laundry
The sheet articles were used for laundering towels, afterwards the laundered towels were dried and evaluated for their fragrance performance. For this evaluation 5 towels (Size: 12 cm x 12 cm) were washed with 2 g of the in example 1 and 2 produced sheet article at 20°C for 15 minutes. Afterwards the towels were hung to dry.
Example 4: Effect of sheet article with capsules on laundry - Sensory evaluation
The sensoric performance of the produced sheet articles were determined by a panel of trained professionals (not perfumers). The towels were evaluated and rated on a scale from 0, 1-0,9, wherein 0,1 is the weakest rating and 0,9 is the strongest rating, the towels were evaluated 3 times. The following values were determined: a.) Intensity and performance of the fragrance without mechanic manipulation. b.) Intensity and performance of the fragrance after kneading the towel 6 times. c.) Intensity and performance of the fragrance after rubbing the towel.
Every participant received a fresh set of towels for evaluation.
Fig.1 shows that the perfumes containing esters and the perfume containing aldehydes performed significantly better, considering the intensity of the fragrance. The scale used for this evaluation ranges from 0 - 1 with 0 being the lowest and worst possible value and 1 being the best possible value. The average results are also shown in table 7 below Fig. 1. The blind value was a towel washed with an unscented flexible, porous, dissolvable solid sheet article. Fig. 2 shows, that the perfume themselves hat a similar intensity in the jar (before using the perfumes in the sheets). This shows that aldehydes and ester show indeed a better performance in this application and the results are not due to the weakness of the compositions I), II) and III) and a stronger intensity of composition IV) and V). The scale used for this evaluation rages from 1-10, with 1 being the lowest value and 10 being the highest and best possible value.
Table 7:

Claims

Claims
1 . A flexible, porous, dissolvable, scented, solid sheet article comprising a water-soluble polymer, a surfactant a moisturizer, water and a fragrance composition wherein the fragrance composition comprises a fragrance oil, comprising at least one aldehyde, preferably two aldehydes, more preferably three aldehydes, even more preferably four aldehydes and or at least one ester, preferably two esters, more preferably three esters even more preferred four esters.
2. A sheet article according to claim 1 wherein the fragrance composition comprises a neat fragrance composition and/or encapsulated fragrance composition, preferably the encapsulated fragrance composition is selected from the group consisting of matrix encapsulated fragrance compositions, core shell encapsulated fragrance compositions, molecular encapsulated fragrance compositions and combinations thereof wherein core shell encapsulated fragrances are preferred.
3. A sheet article according to claim 2 wherein the encapsulated fragrance composition comprises a core shell encapsulated fragrance composition, comprising a core and a shell wherein the ratio of core to shell is 95:5 - 70: 30, preferably 95:5 - 80:20, more preferably 95:5 - 50:50.
4. A sheet article according to claim 2 or 3 wherein one or more shell material(s) of the encapsulated fragrance composition is selected from the group consisting of polyethylenes, polyamides, polyamines, ployacrylamides, polystyrenes, polyvinylamines, polyvinyl formamides, polyolefins, polyvinylalcohols, polyacrylates, polymethacrylates, polyvinylacrylates, polyisoprenes polyvinylmethyacrylates, aminoplasts, polyisocyanate such as aliphatic polyisocyanates, aromatic polyisocyanates, polyvinylamines, polyvinyl formamides, Polyvinyl pyrrolidone, polyvinyl pyrrolidone co-polymers, polyvinylpyrrolidone vinyl acrylate, polyvinylpyrrolidone methacrylate, polyvinylpyrrolidone ethacrylate, polyvinylpyrrolidone vinylacrylate , polyvinyl acetal, polyvinyl butyral, polyolefins, polycarbonates, polyesters, polyethylene maleic anhydride, gelatin, shellac, epoxy resins, vinyl polymers, water-insoluble inorganics (e.g. silicas), silicones, polysiloxane, polypropylene maleic acid, polypropylene maleic acid co-polymer, maleic anhydride derivatives, co-polymers of maleic anhydride derivatives, waxes, aminoplasts, (preferred polyureas, polyurethanes, polyureaurethanes, melamine- formaldehyde, cross-linked melamine-formaldehyde, urea-formaldehyde, cross-linked urea formaldehyde), styrene butadiene latex, gum Arabic, alginate, sodium alginate, chitosan, casein, pectin, inulin, agar, traganth, carrageen, konjac gum, guar gum, carob bean gum, xanthan gum, paramylon, starches such as potato starch, wheat starch, corn starch, rice starch, tapioca starch, oat starch and modified starches, starch derivatives such as dextrins, maltodextrins, cyclodextrins, oligosaccharids, sugar alcohols such as sorbitol, mannitol, isomalt, maltitol, lactitol, xylitol, erythritol, gellan, glucose, glycosaminoglycans, maltitol-syrup, lactit, polyvinylmethylether, polyallyl amines, co-polymers of polyallyl amines, polysaccharides such as cellulose and cellulose derivatives such as carboxylmethyl cellulose (CMC), carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose, microcrystalline cellulose (MCC), hemicelluloses, raffinose, xylose, polydextrose, lactulose, lichenin, chitin, chitosan, lignin, vegetable fibres, potato fibres, apple fibres, citrus fibres, bamboo fibres, extracted sugar beet fibres, oat fibres, vegetable proteins such as hemp protein, sunflower protein, pea protein, pumpkin protein, soy protein, wheat protein, barley protein, rye protein, spelled protein, gluten protein, rapeseed protein, rice protein, potato protein, corn protein, bean protein, chick pea protein, lens protein, lupine protein, peanut protein, alfalfa protein, fava beans protein, and mixtures thereof.
5. A sheet article according to any one of the former claims wherein the aldehydes are selected from the group consisting of 2,6,10-trimethylundec-9-enal (141-13-9; Adoxal; Farenal); alpha-,3,3-trimethyl-cyclohexanemethanolformate (25225-08-5; Aphermate); 4-(1 , 1 -dimethylethyl)-benzenepropanal (18127-01-0; Bourgeonal); 6- methoxy-2,6-dimethyloctanal (929253-05-4; Calypsone); 4-methoxy-alpha-methyl- benzenepropanal (5462-06-6; Canthoxal); a,2,2,6-tetramethylcyclohexenebutanal (65405-84-7; Cetonal); 8,8-dimethyl-1 ,2,3,4,5,6,7,8-octahydro-2-naphthaldehyde + 1 ,2,3,4,5,6,7,8-octahydro-5,5-dimethyl-2-naphthalenecarboxaldehyde (68991 -96-8; 68991-97-9; Cyclomyral); 4-(octahydro-4,7-methano-5H-inden-5-ylidene butanal (30168-23-1 ; Dupical); 4,8-dimethyl-4,9-decadienal (71077-31-1 ; Floral Super); 3-(4- ethylphenyl)-2,2-dimethylpropanal + 3-(2-ethylphenyl)-2,2-dimethylpropanal (67634- 15-5; 67634-14-4; Florazon); beta-methyl-3-(1-methylethyl)-benzenepropanal (12509- 85-5; Florhydral); methylenedioxyphenyl-methylpropanal (1205-17-0; Helional); a, 4- dimethylbenzenepropanal (41496-43-9; Jasmorange, Satinaldehyde); (Z,E)-2,4- dimethyl cyclohex-3-ene-1 -carbaldehyde (68039-49-6; 68737-61-1 ; Ligustral, Tripalal, Cyclal C, Vertocitral) ; 3-(4-tert-butylphenyl)butanal (80-54-6; Lilial); (1 R)-p,4- dimethyl-3-cyclohexene-1-propanal (199445-85-7; Liminal); (4R)-4-(1 -Methylethyl)-1 - cyclohexene-1 -propanal (1378867-81 -2; Lilybelle); (4S)-4-(1-Methylethyl)-1- cyclohexene-1 -propanal (1378867-82-3; Lilybelle Isomer); 4-(4-Hydroxy-4-methyl- pentyl)-3-cyclohexen-1 -carboxyaldehyde (130066-44-3; Lyral); 6-methyl-1-8-yl- methyleth l-bicyclo[2.2.2]oct-5-ene-2-carboxaldehyde (67845-30-1 ; Maceal); (±)-2,6- Dimethyl-5-heptenal (106-72-9; Melonal); (E)-2,6,10-trimethylundeca-5,9-dienal (54082-68-7; Oncidal); 6,6-Dimethyl-2-norpinene-2-propionaldehyde (33885-51-7; Pinoacet aldehyde); 1 -methyl-4-(4-methyl-3-pentenyl)cyclohex-3-ene-1 - carboxaldehyde + 6,6-dimethyl-2-norpinene-2-propionaldehyde (119652-81-2; 52475- 86-2; Precyclemone B); 3-phenylbutanal (16251-77-7; Trifernal); octahydro-5- methoxy-4,7-methano-1 H-indene-2-carboxaldehyde (86803-90-9; Scentenal); rel- (3aR,4R,5R,7R,7aR)-octahydro-4,7-methano-1 H-indene-5-carboxaldehyde (145374- 28-3; Vertral); 4-(4-methyl pent-3-enyl) cyclohex-3-ene-1 -carbaldehyde (37677-14-8; Vertomugal); Hexanal; Heptanal; Octanal; 2-Nonen-1-al; Nonanal; Decanal; Undecenal; 2-Methyldecanal; 10-Undecenal; Undecanal; Dodecanal; 2- Methylundecanal; Anisic Aldehyde; Benzaldehyde; Citral; Citronellal; Cinnamaldehyde; Cuminic Aldehyde; Cyclamen aldehyde; Dihydrocitronellal; trans-2- dodecanal; Ethyl Vanillin; Geranial; Heliotropin/Piperonal; trans-2-hexenal; Alphahexyl-cinnamic aldehyde; Hydratropic Aldehyde; Hxdroxy Citronellal; Isocyclocitral; Methoxycitronellal; Neral; Phenylacetaldehyde; Tangerinal; Cyclamen Homoaldehyde and Vanillin.
6. A sheet article according to any one of the former claims wherein the esters are selected from the group consisting of cis-2-tert-butylcyclohexyl acetate + (2-tert- butylcyclohexyl) acetate (20298-69-5; 88-41-5; Argumex HC / LC); ethyl 3-methyl-3- phenyloxirane-2-carboxylate (77-83-8; Aldehyde C16 so-called); prop-2-enyl 2- cyclohexyloxyacetate (68901 -15-5; Cyclogalbanat); methyl 2,4-dihydroxy-3,6- dimethylbenzoate (4707-47-5; Evernyl); 4-methylpentan-2-yl (E)-but-2-enoate (35206-51-0; Frutinat); ethyl 2-ethyl-6,6-dimethylcyclohex-2-ene-1 -carboxylate (57934-97-1 ; 77851-07-1 ; Givescone); methyl 3-oxo-2-pentylcyclopentaneacetate (24851 -98-7; Hedione); 2-(1-(3',3'-dimethyl-1 '-cyclohexyl)ethoxy)-2-methyl propyl propanoate (141773-73-1 ; Helvetolide); 3a,4,5,6,7,7a-hexahydro-4,7-methanoinden- 6-yl acetate (5413-60-5; Herbalflorat); 3a,4,5,6,7,7a-hexahydro-4,7-methanoinden-6- yl acetate (5413-60-5; Herbalflorat); [(Z)-hex-3-enyl] methyl carbonate (67633-96-9; Leafovert); ethyl 2-methylpentanoate (39255-32-8; Manzanate); 2-[1-(3,3- Dimethylcyclohexyl)ethoxy]-2-oxoethyl propionate (236391-76-7; Romandolide); ethyl 2-cyclopent-2-en-1-ylacetate (15848-49-4; Sultanene); (1S,2R,5S)-5-methyl-2-(1- methylethyl)-cyclohexanolacetate + [(1 R,2S,5R)-5-methyl-2-propan-2-ylcyclohexyl]- acetate (29066-34-0; 89-48-5; Symfresh RF / Menthylacetate); 3-hydroxy-2,2,4- trimethylpentyl 2-methylpropanoate (25265-77-4; Symfresh NX); (4-methyl-4- phenylpentan-2-yl)-acetate (68083-58-9; Vertikolacetat); Allyl Amyl Glycolate; Allyl Caproate; Allyl Cyclohexyl Propionate; Allyl Heptoate; Benzyl Acetate; Benzyl Salicylate; Citronellyl Acetate; Dimethyl Benzyl Carbinyl Acetate ; Dimethyl Benzyl Carbinyl Butyrate; Ethyl Butyrate; Ethyl Caproate; Trans/Cis-2,4-Ethyl Decadienoate; Ethyl acetoacetate; Ethyl-2-Methyl Butyrate; Ethylene Brassylate ; Geranyl Acetate; Herbyl Propionate; Cis/Trans-3-Hexenyl Acetate; Cis-3 Hexenyl Acetate; Cis-3 Hexenyl Butyrate; Cis-3-Hexenyl Isobutyrate; Cis-3-Hexenyl Salicylate; Hexyl Acetate; Hexyl Butyrate; Hexyl Isobutyrate; Hexyl Salicylate; Isoamyl Acetate; Isobornyl Acetate; Isobutyl Acetate; Isoeugenyl Acetate; Linalyl Acetate; Methyl Octin Carbonate; Neryl Acetate; Phenylethyl Butyrate; Phenylethyl Cinnamate; Prenyl Acetate; Styralyl Acetate and Methylanthranilat.
7. A sheet article according to any one of the former claims wherein the fragrance oil comprised in the fragrance composition comprises of from 0,05wt% to 99,5wt%, preferably 0,1 wt% to 90wt%, most preferred 0,15wt% to 75wt% of esters based on the total mass of fragrance ingredients of the fragrance composition.
8. A sheet article according to any one of the former claims wherein the fragrance oil comprised in the fragrance composition comprises of from 0,05wt% to 99,5wt%, preferably 0,1 wt% to 90wt%, most preferred 0,15wt% to 75wt% of aldehydes based on the total mass of fragrance ingredients of the fragrance composition.
9. A multilayer structure according to any one of the former claims comprising two or more layers of the flexible, porous, dissolvable, scented, solid sheet article according to any one of the former claims.
10. A process for preparing a flexible, porous, dissolvable, scented solid sheet article according to any one of the former claims, comprising the steps of: a) providing a wet pre-mixture comprising water-soluble polymer, a surfactant, a moisturizer, a fragrance composition, and water, b) mixing said pre mixture without heating c) heating the wet pre-mixture while mixing d) optionally cooling the wet pre-mixture to less than 60°C, preferably less than 40°C e) aerating said wet pre-mixture f) forming a sheet g) drying said formed sheet in f) at a temperature from 90°C to 170°C, preferably 90°C to 150°C to form said solid sheet article wherein the fragrance composition comprises at least one ester and/or at least one aldehyde, preferably two, more preferably three even more preferably four esters and/or preferably two, more preferably three even more preferably four aldehydes.
11 . A process according to claim 10 wherein the fragrance composition consists of a neat fragrance composition and/or an encapsulated fragrance composition, preferably the encapsulated fragrance compositions are selected from the group consisting of matrix encapsulated fragrance compositions, core shell encapsulated fragrance compositions, molecular encapsulated fragrance compositions and combinations thereof wherein core shell encapsulated fragrance compositions are preferred.
12. A Process according to claim 11 wherein the encapsulated fragrance composition comprises a core shell encapsulated fragrance composition, comprising a core and a shell wherein the ratio of core to shell is 95:5 - 70: 30, preferably 95:5 - 80:20.
13. A process according to any one of the claims 11 to 12 wherein one or more shell material(s) of the encapsulated fragrance composition is selected from the group consisting of polyethylenes, polyamides, polyamines, ployacrylamides, polystyrenes, polyvinylamines, polyvinyl formamides, polyolefins, polyvinylalcohols, polyacrylates, polymethacrylates, polyvinylacrylates, polyisoprenes polyvinylmethyacrylates, aminoplasts, polyisocyanate such as aliphatic polyisocyanates, aromatic polyisocyanates, polyvinylamines, polyvinyl formamides, Polyvinyl pyrrolidone, polyvinyl pyrrolidone co-polymers, polyvinylpyrrolidone vinyl acrylate, polyvinylpyrrolidone methacrylate, polyvinylpyrrolidone ethacrylate, polyvinylpyrrolidone vinylacrylate , polyvinyl acetal, polyvinyl butyral, polyolefins, polycarbonates, polyesters, polyethylene maleic anhydride, gelatin, shellac, epoxy resins, vinyl polymers, water-insoluble inorganics (e.g. silicas), silicones, polysiloxane, polypropylene maleic acid, polypropylene maleic acid co-polymer, maleic anhydride derivatives, co-polymers of maleic anhydride derivatives, waxes, aminoplasts, (preferred polyureas, polyurethanes, polyureaurethanes, melamineformaldehyde, cross-linked melamine-formaldehyde, urea-formaldehyde, cross-linked urea formaldehyde), styrene butadiene latex, gum Arabic, alginate, sodium alginate, chitosan, casein, pectin, inulin, agar, traganth, carrageen, konjac gum, guar gum, carob bean gum, xanthan gum, paramylon, starches such as potato starch, wheat starch, corn starch, rice starch, tapioca starch, oat starch and modified starches, starch derivatives such as dextrins, maltodextrins, cyclodextrins, oligosaccharids, sugar alcohols such as sorbitol, mannitol, isomalt, maltitol, lactitol, xylitol, erythritol, gellan, glucose, glycosaminoglycans, maltitol-syrup, lactit, polyvinylmethylether, polyallyl amines, co-polymers of polyallyl amines, polysaccharides such as cellulose and cellulose derivatives such as carboxylmethyl cellulose (CMC), carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose, microcrystalline cellulose (MCC), hemicelluloses, raffinose, xylose, polydextrose, lactulose, lichenin, chitin, chitosan, lignin, vegetable fibres, potato fibres, apple fibres, citrus fibres, bamboo fibres, extracted sugar beet fibres, oat fibres, vegetable proteins such as hemp protein, sunflower protein, pea protein, pumpkin protein, soy protein, wheat protein, barley protein, rye protein, spelled protein, gluten protein, rapeseed protein, rice protein, potato protein, corn protein, bean protein, chick pea protein, lens protein, lupine protein, peanut protein, alfalfa protein, fava beans protein, and mixtures thereof.
14. A process according to one of the claims 10 to 13 wherein the aldehydes are selected from the group consisting of 2,6,10-trimethylundec-9-enal (141 -13-9; Adoxal; Farenal); alpha-,3,3-trimethyl-cyclohexanemethanolformate (25225-08-5; Aphermate); 4-(1 , 1 -dimethylethyl)-benzenepropanal (18127-01-0; Bourgeonal); 6- methoxy-2,6-dimethyloctanal (929253-05-4; Calypsone); 4-methoxy-alpha-methyl- benzenepropanal (5462-06-6; Canthoxal); a,2,2,6-tetramethylcyclohexenebutanal (65405-84-7; Cetonal); 8,8-dimethyl-1 ,2,3,4,5,6,7,8-octahydro-2-naphthaldehyde + 1 ,2,3,4,5,6,7,8-octahydro-5,5-dimethyl-2-naphthalenecarboxaldehyde (68991 -96-8; 68991-97-9; Cyclomyral); 4-(octahydro-4,7-methano-5H-inden-5-ylidene butanal (30168-23-1 ; Dupical); 4,8-dimethyl-4,9-decadienal (71077-31-1 ; Floral Super); 3-(4- ethylphenyl)-2,2-dimethylpropanal + 3-(2-ethylphenyl)-2,2-dimethylpropanal (67634- 15-5; 67634-14-4; Florazon); beta-methyl-3-(1-methylethyl)-benzenepropanal (12509- 85-5; Florhydral); methylenedioxyphenyl-methylpropanal (1205-17-0; Helional); a, 4- dimethylbenzenepropanal (41496-43-9; Jasmorange, Satinaldehyde); (Z,E)-2,4- dimethyl cyclohex-3-ene-1 -carbaldehyde (68039-49-6; 68737-61-1 ; Ligustral, Tripalal, Cyclal C, Vertocitral) ; 3-(4-tert-butylphenyl)butanal (80-54-6; Lilial); (1 R)-p,4- dimethyl-3-cyclohexene-1-propanal (199445-85-7; Liminal); (4R)-4-(1 -Methylethyl)-1 - cyclohexene-1 -propanal (1378867-81 -2; Lilybelle); (4S)-4-(1-Methylethyl)-1- cyclohexene-1 -propanal (1378867-82-3; Lilybelle Isomer); 4-(4-Hydroxy-4-methyl- pentyl)-3-cyclohexen-1 -carboxyaldehyde (130066-44-3; Lyral); 6-methyl-1-8-yl- methyleth l-bicyclo[2.2.2]oct-5-ene-2-carboxaldehyde (67845-30-1 ; Maceal); (±)-2,6- Dimethyl-5-heptenal (106-72-9; Melonal); (E)-2,6,10-trimethylundeca-5,9-dienal (54082-68-7; Oncidal); 6,6-Dimethyl-2-norpinene-2-propionaldehyde (33885-51-7; Pinoacet aldehyde); 1 -methyl-4-(4-methyl-3-pentenyl)cyclohex-3-ene-1 - carboxaldehyde + 6,6-dimethyl-2-norpinene-2-propionaldehyde (119652-81-2; 52475- 86-2; Precyclemone B); 3-phenylbutanal (16251-77-7; Trifernal); octahydro-5- methoxy-4,7-methano-1 H-indene-2-carboxaldehyde (86803-90-9; Scentenal); rel- (3aR,4R,5R,7R,7aR)-octahydro-4,7-methano-1 H-indene-5-carboxaldehyde (145374- 28-3; Vertral); 4-(4-methyl pent-3-enyl) cyclohex-3-ene-1 -carbaldehyde (37677-14-8; Vertomugal); Hexanal; Heptanal; Octanal; 2-Nonen-1-al; Nonanal; Decanal; Undecenal; 2-Methyldecanal; 10-Undecenal; Undecanal; Dodecanal; 2- Methylundecanal; Anisic Aldehyde; Benzaldehyde; Citral; Citronellal; Cinnamaldehyde; Cuminic Aldehyde; Cyclamen aldehyde; Dihydrocitronellal; trans-2- dodecanal; Ethyl Vanillin; Geranial; Heliotropin/Piperonal; trans-2-hexenal; Alphahexyl-cinnamic aldehyde; Hydratropic Aldehyde; Hxdroxy Citronellal; Isocyclocitral; Methoxycitronellal; Neral; Phenylacetaldehyde; Tangerinal; Cyclamen Homoaldehyde and Vanillin.
15. A process according to any one of the claims 10 to 14 wherein the esters are selected from the group consisting of cis-2-tert-butylcyclohexyl acetate + (2-tert- butylcyclohexyl) acetate (20298-69-5; 88-41-5; Argumex HC / LC); ethyl 3-methyl-3- phenyloxirane-2-carboxylate (77-83-8; Aldehyde C16 so-called); prop-2-enyl 2- cyclohexyloxyacetate (68901 -15-5; Cyclogalbanat); methyl 2,4-dihydroxy-3,6- dimethylbenzoate (4707-47-5; Evernyl); 4-methylpentan-2-yl (E)-but-2-enoate (35206-51-0; Frutinat); ethyl 2-ethyl-6,6-dimethylcyclohex-2-ene-1 -carboxylate (57934-97-1 ; 77851-07-1 ; Givescone); methyl 3-oxo-2-pentylcyclopentaneacetate (24851 -98-7; Hedione); 2-(1-(3',3'-dimethyl-1 '-cyclohexyl)ethoxy)-2-methyl propyl propanoate (141773-73-1 ; Helvetolide); 3a,4,5,6,7,7a-hexahydro-4,7-methanoinden- 6-yl acetate (5413-60-5; Herbalflorat); 3a,4,5,6,7,7a-hexahydro-4,7-methanoinden-6- yl acetate (5413-60-5; Herbalflorat); [(Z)-hex-3-enyl] methyl carbonate (67633-96-9; Leafovert); ethyl 2-methylpentanoate (39255-32-8; Manzanate); 2-[1-(3,3- Dimethylcyclohexyl)ethoxy]-2-oxoethyl propionate (236391-76-7; Romandolide); ethyl 2-cyclopent-2-en-1-ylacetate (15848-49-4; Sultanene); (1S,2R,5S)-5-methyl-2-(1- methylethyl)-cyclohexanolacetate + [(1 R,2S,5R)-5-methyl-2-propan-2-ylcyclohexyl]- acetate (29066-34-0; 89-48-5; Symfresh RF / Menthylacetate); 3-hydroxy-2,2,4- trimethylpentyl 2-methylpropanoate (25265-77-4; Symfresh NX); (4-methyl-4- phenylpentan-2-yl)-acetate (68083-58-9; Vertikolacetat); Allyl Amyl Glycolate; Allyl Caproate; Allyl Cyclohexyl Propionate; Allyl Heptoate; Benzyl Acetate; Benzyl Salicylate; Citronellyl Acetate; Dimethyl Benzyl Carbinyl Acetate ; Dimethyl Benzyl Carbinyl Butyrate; Ethyl Butyrate; Ethyl Caproate; Trans/Cis-2,4-Ethyl Decadienoate; Ethyl acetoacetate; Ethyl-2-Methyl Butyrate; Ethylene Brassylate ; Geranyl Acetate; Herbyl Propionate; Cis/Trans-3-Hexenyl Acetate; Cis-3 Hexenyl Acetate; Cis-3 Hexenyl Butyrate; Cis-3-Hexenyl Isobutyrate; Cis-3-Hexenyl Salicylate; Hexyl Acetate; Hexyl Butyrate; Hexyl Isobutyrate; Hexyl Salicylate; Isoamyl Acetate; Isobornyl Acetate; Isobutyl Acetate; Isoeugenyl Acetate; Linalyl Acetate; Methyl Octin Carbonate; Neryl Acetate; Phenylethyl Butyrate; Phenylethyl Cinnamate; Prenyl Acetate; Styralyl Acetate and Methylanthranilat
16. A process according to any one of the claims 10 to 17 wherein the fragrance oil comprised in the fragrance composition comprises from 0,05wt% to 99,5wt%, preferably 0,1 wt% to 90wt%, most preferred 0,15wt% to 75wt% of esters based on the total mass of fragrance ingredients of the fragrance composition.
17. A process according to the claims 10 to 16 wherein the fragrance oi comprised in fragrance composition comprises from 0,05wt% to 99,5wt%, preferably 0,15wt% to 90wt%, most preferred 0,15wt% to 75wt% of aldehydes based on the total mass of fragrance ingredients of the fragrance composition.
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