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US20110146001A1 - Laundry Detergent Composition Having A Malodor Control Component And Methods Of Laundering Fabrics - Google Patents

Laundry Detergent Composition Having A Malodor Control Component And Methods Of Laundering Fabrics Download PDF

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Publication number
US20110146001A1
US20110146001A1 US12/969,724 US96972410A US2011146001A1 US 20110146001 A1 US20110146001 A1 US 20110146001A1 US 96972410 A US96972410 A US 96972410A US 2011146001 A1 US2011146001 A1 US 2011146001A1
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composition
aldehyde
volatile
control component
volatile aldehydes
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US12/969,724
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Ricky Ah-Man Woo
Steven Anthony Horenziak
Rhonda Jean Jackson
Zaiyou Liu
Michael- Vincent Nario Malanyaon
Jason John Olchovy
Christine Marie Readnour
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Procter and Gamble Co
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Individual
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Priority to US12/969,724 priority Critical patent/US20110146001A1/en
Assigned to THE PROCTER & GAMBLE COMPANY reassignment THE PROCTER & GAMBLE COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JACKSON, RHONDA JEAN, LIU, ZAIYOU, READNOUR, CHRISTINE MARIE, MALANYAON, MICHAEL-VINCENT NARIO, WOO, RICKY AH-MAN, HORENZIAK, STEVEN ANTHONY, OLCHOVY, JASON JOHN
Publication of US20110146001A1 publication Critical patent/US20110146001A1/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • A47L15/0005—Rinsing phases, e.g. pre-rinsing, intermediate rinsing, final rinsing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/01—Deodorant compositions
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/83—Mixtures of non-ionic with anionic compounds
    • 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
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0068—Deodorant compositions
    • 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
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2072—Aldehydes-ketones
    • 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
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • 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
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • C11D3/2079—Monocarboxylic acids-salts thereof
    • 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
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2096—Heterocyclic compounds
    • 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
    • C11D3/16—Organic compounds
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/33—Amino carboxylic acids
    • 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
    • C11D3/16—Organic compounds
    • C11D3/34—Organic compounds containing sulfur
    • C11D3/3481—Organic compounds containing sulfur containing sulfur in a heterocyclic ring, e.g. sultones or sulfolanes
    • 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
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/373—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
    • 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
    • C11D3/16—Organic compounds
    • C11D3/38—Products with no well-defined composition, e.g. natural products
    • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
    • 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
    • C11D3/16—Organic compounds
    • C11D3/38—Products with no well-defined composition, e.g. natural products
    • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
    • C11D3/38663—Stabilised liquid enzyme compositions
    • 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

Definitions

  • the present invention relates to detergent laundry compositions having a malodor control component, and methods of laundering detergents.
  • amine-based malodors such as fish and urine malodors
  • sulfur-based malodors such as garlic, onion, foot, and fecal malodors
  • the time required for a product to noticeably combat malodors may create consumer doubt as to a product's efficacy on malodors. For example, the consumer may finish laundering a fabric and leave the area before the product begins to noticeably reduce the malodor.
  • the present invention relates to a laundry detergent composition as defined by claim 1 .
  • FIG. 1 is a graph showing butanethiol reduction by thiophene carboxaldehyde in combination with various acid catalysts.
  • the present invention relates to a laundry detergent composition for laundering fabrics and reducing malodors found thereon.
  • the present invention also relates to methods of laundering fabrics.
  • the composition can be any form, for example a liquid, gel form, solid, or any combination thereof.
  • the composition may be in any unit dose form, for example a pouch.
  • the composition is a fully formulated laundry detergent composition, not a portion thereof such as a spray-dried or agglomerated particle that only forms part of the laundry detergent composition.
  • an additional rinse additive composition e.g. fabric conditioner or enhancer
  • a main wash additive composition e.g. bleach additive
  • the composition typically comprises detergent ingredients.
  • Suitable detergent ingredients include: detersive surfactants including anionic detersive surfactants, non-ionic detersive surfactants, cationic detersive surfactants, zwitterionic detersive surfactants, amphoteric detersive surfactants, and any combination thereof; polymers including carboxylate polymers, polyethylene glycol polymers, polyester soil release polymers such as terephthalate polymers, amine polymers, cellulosic polymers, dye transfer inhibition polymers, dye lock polymers such as a condensation oligomer produced by condensation of imidazole and epichlorhydrin, optionally in ratio of 1:4:1, hexamethylenediamine derivative polymers, and any combination thereof; builders including zeolites, phosphates, citrate, and any combination thereof; buffers and alkalinity sources including carbonate salts and/or silicate salts; fillers including sulphate salts and bio-filler materials; bleach including bleach activators, sources of available oxygen, pre
  • Solid particulate laundry detergent composition In the case of a solid laundry detergent composition, the composition may comprises a plurality of chemically different particles, such as spray-dried base detergent particles and/or agglomerated base detergent particles and/or extruded base detergent particles, in combination with one or more, typically two or more, or three or more, or four or more, or five or more, or six or more, or even ten or more particles selected from: surfactant particles, including surfactant agglomerates, surfactant extrudates, surfactant needles, surfactant noodles, surfactant flakes; polymer particles such as cellulosic polymer particles, polyester particles, polyamine particles, terephthalate polymer particles, polyethylene glycol polymer particles; builder particles, such as sodium carbonate and sodium silicate co-builder particles, phosphate particles, zeolite particles, silicate salt particles, carbonate salt particles; filler particles such as sulphate salt particles; dye transfer inhibitor particles; dye fixative particles; bleach particles, such as percarbonate particles
  • Liquid laundry detergent composition The composition may also be in liquid form, for example a liquid or gel form, or any combination thereof.
  • the composition may be in any unit dose form, for example a pouch.
  • the composition may include: (i) detersive surfactant comprising anionic detersive surfactant and non-ionic surfactant, wherein the weight ratio of anionic detersive surfactant to non-ionic detersive surfactant is greater than 1:1; (ii) surfactancy boosting polymer; (iii) from 0 wt % to 10 wt % fatty acid; (iv) silicone suds suppressor; (v) structurant; (vi) enzymes; and (vii) nil-boron enzyme stabilizer.
  • the electrolytic strength of the composition at a concentration of 1 g/l in de-ionized water and at a temperature of 25° C.
  • mScm ⁇ 1 is preferably less than 200 mScm ⁇ 1 . It may be preferred to keep low levels of fatty acid in the composition, and/or to use alkanolamines, preferably tertiary alkanolamines having a pKa of less than 9.0, or even less than 8.0, preferred are tri-isopropanolamine (TIPA), and/or triethanolamine (TEA), especially preferred is TEA due to its low molecular weight and low pKa, to provide some buffering capacity in the formulation.
  • TIPA tri-isopropanolamine
  • TEA triethanolamine
  • a liquid laundry detergent composition comprises: (i) detersive surfactant comprising anionic detersive surfactant and non-ionic surfactant, wherein the weight ratio of anionic detersive surfactant to non-ionic detersive surfactant is greater than 1:1; and optionally wherein the anionic detersive surfactant has a hydrophilic index (HI C ) of from 8.0 to 9.1; (ii) surfactancy boosting polymer; (iii) from 0 wt % to 5 wt % fatty acid; (iv) silicone suds suppressor; (v) structurant; (vi) enzymes; and (vii) non-boron enzyme stabilizer; and wherein the electrolytic strength of the composition at a concentration of 1 g/l in de-ionized water and at a temperature of 25° C. in mScm ⁇ 1 is preferably less than 200 mScm ⁇ 1 .
  • detersive surfactant comprising anionic detersive surfactant and non-
  • Detersive surfactant The composition typically comprises detersive surfactant. Suitable detersive surfactants include anionic detersive surfactants, non-ionic detersive surfactant, cationic detersive surfactants, zwitterionic detersive surfactants, amphoteric detersive surfactants, and any combination thereof.
  • Anionic detersive surfactant Suitable anionic detersive surfactants include sulphate and sulphonate detersive surfactants.
  • Suitable sulphonate detersive surfactants include alkyl benzene sulphonate, such as C 10-13 alkyl benzene sulphonate.
  • Suitable alkyl benzene sulphonate (LAS) is obtainable, or even obtained, by sulphonating commercially available linear alkyl benzene (LAB);
  • suitable LAB includes low 2-phenyl LAB, such as those supplied by Sasol under the tradename Isochem® or those supplied by Petresa under the tradename Petrelab®, other suitable LAB include high 2-phenyl LAB, such as those supplied by Sasol under the tradename Hyblene®.
  • Another suitable anionic detersive surfactant is alkyl benzene sulphonate that is obtained by DETAL catalyzed process, although other synthesis routes, such as HF, may also be suitable.
  • Suitable sulphate detersive surfactants include alkyl sulphate, such as C 8-18 alkyl sulphate, or predominantly C 12 alkyl sulphate.
  • the alkyl sulphate may be derived from natural sources, such as coco and/or tallow.
  • the alkyl sulphate may be derived from synthetic sources such as C 12-15 alkyl sulphate.
  • alkyl alkoxylated sulphate such as alkyl ethoxylated sulphate, or a C 8-18 alkyl alkoxylated sulphate, or a C 8-18 alkyl ethoxylated sulphate.
  • the alkyl alkoxylated sulphate may have an average degree of alkoxylation of from 0.5 to 20, or from 0.5 to 10.
  • the alkyl alkoxylated sulphate may be a C 8-18 alkyl ethoxylated sulphate, typically having an average degree of ethoxylation of from 0.5 to 10, or from 0.5 to 7, or from 0.5 to 5 or from 0.5 to 3.
  • alkyl sulphate, alkyl alkoxylated sulphate and alkyl benzene sulphonates may be linear or branched, substituted or un-substituted.
  • the anionic detersive surfactant may be a mid-chain branched anionic detersive surfactant, such as a mid-chain branched alkyl sulphate and/or a mid-chain branched alkyl benzene sulphonate.
  • the mid-chain branches are typically C 1-4 alkyl groups, such as methyl and/or ethyl groups.
  • Another suitable anionic detersive surfactant is alkyl ethoxy carboxylate.
  • the anionic detersive surfactants are typically present in their salt form, typically being complexed with a suitable cation.
  • Suitable counter-ions include Na + and K + , substituted ammonium such as C 1 -C 6 alkanolammonium such as mono-ethanolamine (MEA) tri-ethanolamine (TEA), di-ethanolamine (DEA), and any mixture thereof.
  • Non-ionic detersive surfactant are selected from the group consisting of: C 8 -C 18 alkyl ethoxylates, such as, NEODOL® non-ionic surfactants from Shell; C 6 -C 12 alkyl phenol alkoxylates wherein optionally the alkoxylate units are ethyleneoxy units, propyleneoxy units or a mixture thereof; C 12 -C 18 alcohol and C 6 -C 12 alkyl phenol condensates with ethylene oxide/propylene oxide block polymers such as Pluronic® from BASF; C 14 -C 22 mid-chain branched alcohols; C 14 -C 22 mid-chain branched alkyl alkoxylates, typically having an average degree of alkoxylation of from 1 to 30; alkylpolysaccharides, such as alkylpolyglycosides; polyhydroxy fatty acid amides; ether capped poly(oxyalkylated) alcohol surfactants;
  • Suitable non-ionic detersive surfactants are alkyl polyglucoside and/or an alkyl alkoxylated alcohol.
  • Suitable non-ionic detersive surfactants include alkyl alkoxylated alcohols, such as C 8-18 alkyl alkoxylated alcohol, or a C 8-18 alkyl ethoxylated alcohol.
  • the alkyl alkoxylated alcohol may have an average degree of alkoxylation of from 0.5 to 50, or from 1 to 30, or from 1 to 20, or from 1 to 10.
  • the alkyl alkoxylated alcohol may be a C 8-18 alkyl ethoxylated alcohol, typically having an average degree of ethoxylation of from 1 to 10, or from 1 to 7, or from 1 to 5, or from 3 to 7.
  • the alkyl alkoxylated alcohol can be linear or branched, and substituted or un-substituted.
  • Suitable nonionic detersive surfactants include secondary alcohol-based detersive surfactants having the formula:
  • R 1 linear or branched, substituted or unsubstituted, saturated or unsaturated C 2-8 alkyl
  • R 2 linear or branched, substituted or unsubstituted, saturated or unsaturated C 2-8 alkyl
  • R 1 +R 2 moieties wherein the total number of carbon atoms present in R 1 +R 2 moieties is in the range of from 7 to 13;
  • EO/PO are alkoxy moieties selected from ethoxy, propoxy, or mixtures thereof, optionally the EO/PO alkoxyl moieties are in random or block configuration;
  • n is the average degree of alkoxylation and is in the range of from 4 to 10.
  • non-ionic detersive surfactants include EO/PO block co-polymer surfactants, such as the Plurafac® series of surfactants available from BASF, and sugar-derived surfactants such as alkyl N-methyl glucose amide.
  • Cationic detersive surfactant Suitable cationic detersive surfactants include alkyl pyridinium compounds, alkyl quaternary ammonium compounds, alkyl quaternary phosphonium compounds, alkyl ternary sulphonium compounds, and mixtures thereof.
  • Suitable cationic detersive surfactants are quaternary ammonium compounds having the general formula:
  • R is a linear or branched, substituted or unsubstituted C 6-18 alkyl or alkenyl moiety
  • R 1 and R 2 are independently selected from methyl or ethyl moieties
  • R 3 is a hydroxyl, hydroxymethyl or a hydroxyethyl moiety
  • X is an anion which provides charge neutrality
  • suitable anions include: halides, such as chloride; sulphate; and sulphonate.
  • Suitable cationic detersive surfactants are mono-C 6-18 alkyl mono-hydroxyethyl di-methyl quaternary ammonium chlorides.
  • Suitable cationic detersive surfactants are mono-C 8-10 alkyl mono-hydroxyethyl di-methyl quaternary ammonium chloride, mono-C 10-12 alkyl mono-hydroxyethyl di-methyl quaternary ammonium chloride and mono-C 10 alkyl mono-hydroxyethyl di-methyl quaternary ammonium chloride.
  • Suitable zwitterionic and/or amphoteric detersive surfactants include amine oxide such as dodecyldimethylamine N-oxide, alkanolamine sulphobetaines, coco-amidopropyl betaines, HN + —R—CO 2 ⁇ based surfactants, wherein R can be any bridging group, such as alkyl, alkoxy, aryl or amino acids.
  • Suitable polymers include carboxylate polymers, polyethylene glycol polymers, polyester soil release polymers such as terephthalate polymers, amine polymers, cellulosic polymers, dye transfer inhibition polymers, dye lock polymers such as a condensation oligomer produced by condensation of imidazole and epichlorhydrin, optionally in ratio of 1:4:1, hexamethylenediamine derivative polymers, and any combination thereof.
  • Carboxylate polymer Suitable carboxylate polymers include maleate/acrylate random copolymer or polyacrylate homopolymer.
  • the carboxylate polymer may be a polyacrylate homopolymer having a molecular weight of from 4,000 Da to 9,000 Da, or from 6,000 Da to 9,000 Da.
  • Other suitable carboxylate polymers are co-polymers of maleic acid and acrylic acid, and may have a molecular weight in the range of from 4,000 Da to 90,000 Da.
  • Suitable polyethylene glycol polymers include random graft co-polymers comprising: (i) hydrophilic backbone comprising polyethylene glycol; and (ii) hydrophobic side chain(s) selected from the group consisting of: C 4 -C 25 alkyl group, polypropylene, polybutylene, vinyl ester of a saturated C 1 -C 6 mono-carboxylic acid, C 1 -C 6 alkyl ester of acrylic or methacrylic acid, and mixtures thereof.
  • Suitable polyethylene glycol polymers have a polyethylene glycol backbone with random grafted polyvinyl acetate side chains.
  • the average molecular weight of the polyethylene glycol backbone can be in the range of from 2,000 Da to 20,000 Da, or from 4,000 Da to 8,000 Da.
  • the molecular weight ratio of the polyethylene glycol backbone to the polyvinyl acetate side chains can be in the range of from 1:1 to 1:5, or from 1:1.2 to 1:2.
  • the average number of graft sites per ethylene oxide units can be less than 1, or less than 0.8, the average number of graft sites per ethylene oxide units can be in the range of from 0.5 to 0.9, or the average number of graft sites per ethylene oxide units can be in the range of from 0.1 to 0.5, or from 0.2 to 0.4.
  • a suitable polyethylene glycol polymer is Sokalan HP22.
  • Polyester soil release polymers have a structure as defined by one of the following structures (I), (II) or (III):
  • a, b and c are from 1 to 200;
  • d, e and f are from 1 to 50;
  • Ar is a 1,4-substituted phenylene
  • sAr is 1,3-substituted phenylene substituted in position 5 with SO 3 Me;
  • Me is Li, K, Mg/2, Ca/2, Al/3, ammonium, mono-, di-, tri-, or tetraalkylammonium wherein the alkyl groups are C 1 -C 18 alkyl or C 2 -C 10 hydroxyalkyl, or any mixture thereof;
  • R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are independently selected from H or C 1 -C 18 n- or iso-alkyl;
  • R 7 is a linear or branched C 1 -C 18 alkyl, or a linear or branched C 2 -C 30 alkenyl, or a cycloalkyl group with 5 to 9 carbon atoms, or a C 8 -C 30 aryl group, or a C 6 -C 30 arylalkyl group.
  • Suitable polyester soil release polymers are terephthalate polymers having the structure of formula (I) or (II) above.
  • Suitable polyester soil release polymers include the Repel-o-tex series of polymers such as Repel-o-tex SF2 (Rhodia) and/or the Texcare series of polymers such as Texcare SRA300 (Clariant).
  • Suitable amine polymers include polyethylene imine polymers, such as alkoxylated polyalkyleneimines, optionally comprising a polyethylene and/or polypropylene oxide block.
  • the composition can comprise cellulosic polymers, such as polymers selected from alkyl cellulose, alkyl alkoxyalkyl cellulose, carboxyalkyl cellulose, alkyl carboxyalkyl, and any combination thereof. Suitable cellulosic polymers are selected from carboxymethyl cellulose, methyl cellulose, methyl hydroxyethyl cellulose, methyl carboxymethyl cellulose, and mixtures thereof. The carboxymethyl cellulose can have a degree of carboxymethyl substitution from 0.5 to 0.9 and a molecular weight from 100,000 Da to 300,000 Da. Another suitable cellulosic polymer is hydrophobically modified carboxymethyl cellulose, such as Finnfix SH-1 (CP Kelco).
  • Finnfix SH-1 CP Kelco
  • suitable cellulosic polymers may have a degree of substitution (DS) of from 0.01 to 0.99 and a degree of blockiness (DB) such that either DS+DB is of at least 1.00 or DB+2DS ⁇ DS 2 is at least 1.20.
  • the substituted cellulosic polymer can have a degree of substitution (DS) of at least 0.55.
  • the substituted cellulosic polymer can have a degree of blockiness (DB) of at least 0.35.
  • the substituted cellulosic polymer can have a DS+DB, of from 1.05 to 2.00.
  • a suitable substituted cellulosic polymer is carboxymethylcellulose.
  • Another suitable cellulosic polymer is cationically modified hydroxyethyl cellulose.
  • Dye transfer inhibitor polymer Suitable dye transfer inhibitor (DTI) polymers include polyvinyl pyrrolidone (PVP), vinyl co-polymers of pyrrolidone and imidazoline (PVPVI), polyvinyl N-oxide (PVNO), and any mixture thereof.
  • PVP polyvinyl pyrrolidone
  • PVVI vinyl co-polymers of pyrrolidone and imidazoline
  • PVNO polyvinyl N-oxide
  • Hexamethylenediamine derivative polymers include hexamethylenediamine derivative polymers, typically having the formula:
  • X ⁇ is a suitable counter-ion, for example chloride
  • R is a poly(ethylene glycol) chain having an average degree of ethoxylation of from 20 to 30.
  • the poly(ethylene glycol) chains may be independently capped with sulphate and/or sulphonate groups, typically with the charge being balanced by reducing the number of X ⁇ counter-ions, or (in cases where the average degree of sulphation per molecule is greater than two), introduction of Y + counter-ions, for example sodium cations.
  • Suitable builders include zeolites, phosphates, citrates, and any combination thereof.
  • Zeolite builder The composition typically comprises from 0 wt % to 10 wt %, zeolite builder, or to 8 wt %, or to 6 wt %, or to 4 wt %, or to 3 wt %, or to 2 wt %, or even to 1 wt % zeolite builder.
  • the composition may even be substantially free of zeolite builder; substantially free means “no deliberately added”.
  • Typical zeolite builders include zeolite A, zeolite P, zeolite MAP, zeolite X and zeolite Y.
  • Phosphate builder The composition typically comprises from 0 wt % to 10 wt % phosphate builder, or to 8 wt %, or to 6 wt %, or to 4 wt %, or to 3 wt %, or to 2 wt %, or even to 1 wt % phosphate builder.
  • the composition may even be substantially free of phosphate builder; substantially free means “no deliberately added”.
  • a typical phosphate builder is sodium tri-polyphosphate (STPP).
  • citrate is sodium citrate.
  • citric acid may also be incorporated into the composition, which can form citrate in the wash liquor.
  • Buffer and alkalinity source include carbonate salts and/or silicate salts and/or double salts such as burkeitte.
  • a suitable carbonate salt is sodium carbonate and/or sodium bicarbonate.
  • the composition may comprise bicarbonate salt. It may be suitable for the composition to comprise low levels of carbonate salt, for example, it may be suitable for the composition to comprise from 0 wt % to 10 wt % carbonate salt, or to 8 wt %, or to 6 wt %, or to 4 wt %, or to 3 wt %, or to 2 wt %, or even to 1 wt % carbonate salt.
  • the composition may even be substantially free of carbonate salt; substantially free means “no deliberately added”.
  • the carbonate salt may have a weight average mean particle size of from 100 to 500 micrometers. Alternatively, the carbonate salt may have a weight average mean particle size of from 10 to 25 micrometers.
  • Silicate salt The composition may comprise from 0 wt % to 20 wt % silicate salt, or to 15 wt %, or to 10 wt %, or to 5 wt %, or to 4 wt %, or even to 2 wt %, and may comprise from above 0 wt %, or from 0.5 wt %, or even from 1 wt % silicate salt.
  • the silicate can be crystalline or amorphous. Suitable crystalline silicates include crystalline layered silicate, such as SKS-6. Other suitable silicates include 1.6R silicate and/or 2.0R silicate.
  • a suitable silicate salt is sodium silicate.
  • Another suitable silicate salt is sodium metasilicate.
  • the composition may comprise from 0 wt % to 70% filler.
  • Suitable fillers include sulphate salts and/or bio-filler materials.
  • a suitable sulphate salt is sodium sulphate.
  • the sulphate salt may have a weight average mean particle size of from 100 to 500 micrometers, alternatively, the sulphate salt may have a weight average mean particle size of from 10 to 45 micrometers.
  • Bio-filler material A suitable bio-filler material is alkali and/or bleach treated agricultural waste.
  • the composition may comprise bleach.
  • the composition may be substantially free of bleach; substantially free means “no deliberately added”.
  • Suitable bleach includes bleach activators, sources of available oxygen, pre-formed peracids, bleach catalysts, reducing bleach, and any combination thereof. If present, the bleach, or any component thereof, for example the pre-formed peracid, may be coated, such as encapsulated, or clathrated, such as with urea or cyclodextrin.
  • Suitable bleach activators include: tetraacetylethylenediamine (TAED); oxybenzene sulphonates such as nonanoyl oxybenzene sulphonate (NOBS), caprylamidononanoyl oxybenzene sulphonate (NACA-OBS), 3,5,5-trimethyl hexanoyloxybenzene sulphonate (Iso-NOBS), dodecyl oxybenzene sulphonate (LOBS), and any mixture thereof; caprolactams; pentaacetate glucose (PAG); nitrile quaternary ammonium; imide bleach activators, such as N-nonanoyl-N-methyl acetamide; and any mixture thereof.
  • TAED tetraacetylethylenediamine
  • oxybenzene sulphonates such as nonanoyl oxybenzene sulphonate (NOBS), caprylamidononanoyl oxybenz
  • a suitable source of available oxygen is a source of hydrogen peroxide, such as percarbonate salts and/or perborate salts, such as sodium percarbonate.
  • the source of peroxygen may be at least partially coated, or even completely coated, by a coating ingredient such as a carbonate salt, a sulphate salt, a silicate salt, borosilicate, or any mixture thereof, including mixed salts thereof.
  • Suitable percarbonate salts can be prepared by a fluid bed process or by a crystallization process.
  • Suitable perborate salts include sodium perborate mono-hydrate (PB1), sodium perborate tetra-hydrate (PB4), and anhydrous sodium perborate which is also known as fizzing sodium perborate.
  • Other suitable sources of AvOx include persulphate, such as oxone.
  • Another suitable source of AvOx is hydrogen peroxide.
  • Pre-formed peracid A suitable pre-formed peracid is N,N-pthaloylamino peroxycaproic acid (PAP).
  • PAP N,N-pthaloylamino peroxycaproic acid
  • Bleach catalyst Suitable bleach catalysts include oxaziridinium-based bleach catalysts, transition metal bleach catalysts and bleaching enzymes.
  • Oxaziridinium-based bleach catalyst A suitable oxaziridinium-based bleach catalyst has the formula:
  • R 1 is selected from the group consisting of: H, a branched alkyl group containing from 3 to 24 carbons, and a linear alkyl group containing from 1 to 24 carbons;
  • R 1 can be a branched alkyl group comprising from 6 to 18 carbons, or a linear alkyl group comprising from 5 to 18 carbons,
  • R 1 can be selected from the group consisting of: 2-propylheptyl, 2-butyloctyl, 2-pentylnonyl, 2-hexyldecyl, n-hexyl, n-octyl, n-decyl, n-dodecyl, n-tetradecyl, n-hexadecyl, n-octadecyl, iso-nonyl, iso-decyl, iso-tridecyl and iso-pentadecyl;
  • R 2 is independently selected from the group
  • Transition metal bleach catalyst The composition may include transition metal bleach catalyst, typically comprising copper, iron, titanium, ruthenium, tungsten, molybdenum, and/or manganese cations. Suitable transition metal bleach catalysts are manganese-based transition metal bleach catalysts.
  • the composition may comprise a reducing bleach. However, the composition may be substantially free of reducing bleach; substantially free means “no deliberately added”. Suitable reducing bleach include sodium sulphite and/or thiourea dioxide (TDO).
  • the composition may comprise a co-bleach particle.
  • the co-bleach particle comprises a bleach activator and a source of peroxide. It may be highly suitable for a large amount of bleach activator relative to the source of hydrogen peroxide to be present in the co-bleach particle.
  • the weight ratio of bleach activator to source of hydrogen peroxide present in the co-bleach particle can be at least 0.3:1, or at least 0.6:1, or at least 0.7:1, or at least 0.8:1, or at least 0.9:1, or at least 1.0:1.0, or even at least 1.2:1 or higher.
  • the co-bleach particle can comprise: (i) bleach activator, such as TAED; and (ii) a source of hydrogen peroxide, such as sodium percarbonate.
  • the bleach activator may at least partially, or even completely, enclose the source of hydrogen peroxide.
  • the co-bleach particle may comprise a binder.
  • Suitable binders are carboxylate polymers such as polyacrylate polymers, and/or surfactants including non-ionic detersive surfactants and/or anionic detersive surfactants such as linear C 11 -C 13 alkyl benzene sulphonate.
  • the co-bleach particle may comprise bleach catalyst, such as an oxaziridium-based bleach catalyst.
  • Suitable chelants are selected from: diethylene triamine pentaacetate, diethylene triamine penta(methyl phosphonic acid), ethylene diamine-N′N′-disuccinic acid, ethylene diamine tetraacetate, ethylene diamine tetra(methylene phosphonic acid), hydroxyethane di(methylene phosphonic acid), and any combination thereof.
  • a suitable chelant is ethylene diamine-N′N′-disuccinic acid (EDDS) and/or hydroxyethane diphosphonic acid (HEDP).
  • the laundry detergent composition may comprise ethylene diamine-N′N′-disuccinic acid or salt thereof.
  • the ethylene diamine-N′N′-disuccinic acid may be in S,S enantiomeric form.
  • the composition may comprise 4,5-dihydroxy-m-benzenedisulfonic acid disodium salt.
  • Suitable chelants may also be calcium crystal growth inhibitors.
  • the composition may comprise a calcium carbonate crystal growth inhibitor, such as one selected from the group consisting of: 1-hydroxyethanediphosphonic acid (HEDP) and salts thereof; N,N-dicarboxymethyl-2-aminopentane-1,5-dioic acid and salts thereof; 2-phosphonobutane-1,2,4-tricarboxylic acid and salts thereof; and any combination thereof.
  • HEDP 1-hydroxyethanediphosphonic acid
  • HEDP 1-hydroxyethanediphosphonic acid
  • N,N-dicarboxymethyl-2-aminopentane-1,5-dioic acid and salts thereof 2-phosphonobutane-1,2,4-tricarboxylic acid and salts thereof; and any combination thereof.
  • Photobleach Suitable photobleaches are zinc and/or aluminium sulphonated phthalocyanines.
  • the hueing agent (also defined herein as hueing dye) is typically formulated to deposit onto fabrics from the wash liquor so as to improve fabric whiteness perception.
  • the hueing agent is typically blue or violet. It may be suitable that the hueing dye(s) have a peak absorption wavelength of from 550 nm to 650 nm, or from 570 nm to 630 nm.
  • the hueing agent may be a combination of dyes which together have the visual effect on the human eye as a single dye having a peak absorption wavelength on polyester of from 550 nm to 650 nm, or from 570 nm to 630 nm. This may be provided for example by mixing a red and green-blue dye to yield a blue or violet shade.
  • Dyes are typically coloured organic molecules which are soluble in aqueous media that contain surfactants. Dyes maybe selected from the classes of basic, acid, hydrophobic, direct and polymeric dyes, and dye-conjugates. Suitable polymeric hueing dyes are commercially available, for example from Milliken, Spartanburg, S.C., USA.
  • suitable dyes are violet DD, direct violet 7, direct violet 9, direct violet 11, direct violet 26, direct violet 31, direct violet 35, direct violet 40, direct violet 41, direct violet 51, direct violet 66, direct violet 99, acid violet 50, acid blue 9, acid violet 17, acid black 1, acid red 17, acid blue 29, solvent violet 13, disperse violet 27 disperse violet 26, disperse violet 28, disperse violet 63 and disperse violet 77, basic blue 16, basic blue 65, basic blue 66, basic blue 67, basic blue 71, basic blue 159, basic violet 19, basic violet 35, basic violet 38, basic violet 48; basic blue 3, basic blue 75, basic blue 95, basic blue 122, basic blue 124, basic blue 141, thiazolium dyes, reactive blue 19, reactive blue 163, reactive blue 182, reactive blue 96, Liquitint® Violet CT (Milliken, Spartanburg, USA) and Azo-CM-Cellulose (Megazyme, Bray, Republic of Ireland).
  • suitable dyes are violet DD, direct violet 7, direct violet 9, direct violet 11, direct
  • hueing dye-photobleach conjugates such as the conjugate of sulphonated zinc phthalocyanine with direct violet 99.
  • a particularly suitable hueing agent is a combination of acid red 52 and acid blue 80, or the combination of direct violet 9 and solvent violet 13.
  • Brightener Suitable brighteners are stilbenes, such as brightener 15. Other suitable brighteners are hydrophobic brighteners, and brightener 49.
  • the brightener may be in micronized particulate form, having a weight average particle size in the range of from 3 to 30 micrometers, or from 3 micrometers to 20 micrometers, or from 3 to 10 micrometers.
  • the brightener can be alpha or beta crystalline form.
  • Enzyme Suitable enzymes include proteases, amylases, cellulases, lipases, xylogucanases, pectate lyases, mannanases, bleaching enzymes, cutinases, and mixtures thereof.
  • accession numbers and IDs shown in parentheses refer to the entry numbers in the databases Genbank, EMBL and/or Swiss-Prot. For any mutations, standard 1-letter amino acid codes are used with a * representing a deletion. Accession numbers prefixed with DSM refer to micro-organisms deposited at Deutsche Sammlung von Mikroorganismen and Zellkulturen GmbH, Mascheroder Weg 1b, 38124 Brunswick (DSMZ).
  • the composition may comprise a protease.
  • Suitable proteases include metalloproteases and/or serine proteases, including neutral or alkaline microbial serine proteases, such as subtilisins (EC 3.4.21.62).
  • Suitable proteases include those of animal, vegetable or microbial origin. In one aspect, such suitable protease may be of microbial origin.
  • the suitable proteases include chemically or genetically modified mutants of the aforementioned suitable proteases.
  • the suitable protease may be a serine protease, such as an alkaline microbial protease or/and a trypsin-type protease.
  • suitable neutral or alkaline proteases include:
  • subtilisins EC 3.4.21.62
  • Bacillus lentus Bacillus alkalophilus
  • Bacillus subtilis Bacillus amyloliquefaciens
  • P00782, SUBT_BACAM Bacillus pumilus
  • DSM14391 Bacillus gibsonii
  • trypsin-type or chymotrypsin-type proteases such as trypsin (e.g. of porcine or bovine origin), including the Fusarium protease and the chymotrypsin proteases derived from Cellumonas (A2RQE2).
  • metalloproteases including those derived from Bacillus amyloliquefaciens (P06832, NPRE_BACAM).
  • Suitable proteases include those derived from Bacillus gibsonii or Bacillus Lentus such as subtilisin 309 (P29600) and/or DSM 5483 (P29599).
  • Suitable commercially available protease enzymes include: those sold under the trade names Alcalase®, Savinase®, Primase®, Durazym®, Polarzyme®, Kannase®, Liquanase®, Liquanase Ultra®, Savinase Ultra®, Ovozyme®, Neutrase®, Everlase® and Esperase® by Novozymes A/S (Denmark); those sold under the tradename Maxatase®, Maxacal®, Maxapem®, Properase®, Purafect®, Purafect Prime®, Purafect Ox®, FN3®, FN4®, Excellase® and Purafect OXP® by Genencor International; those sold under the tradename Opticlean® and Optimase® by Solvay Enzymes; those available from Henkel/Kemira, namely BLAP (P29599 having the following mutations S99D+S101 R+S103A+V104I+G159S),
  • Amylase Suitable amylases are alpha-amylases, including those of bacterial or fungal origin. Chemically or genetically modified mutants (variants) are included.
  • a suitable alkaline alpha-amylase is derived from a strain of Bacillus , such as Bacillus licheniformis, Bacillus amyloliquefaciens, Bacillus stearothermophilus, Bacillus subtilis , or other Bacillus sp., such as Bacillus sp. NCIB 12289, NCIB 12512, NCIB 12513, sp 707, DSM 9375, DSM 12368, DSMZ no. 12649, KSM AP1378, KSM K36 or KSM K38.
  • Suitable amylases include:
  • alpha-amylase derived from Bacillus licheniformis P06278, AMY_BACLI
  • variants thereof especially the variants with substitutions in one or more of the following positions: 15, 23, 105, 106, 124, 128, 133, 154, 156, 181, 188, 190, 197, 202, 208, 209, 243, 264, 304, 305, 391, 408, and 444.
  • AA560 amylase CBU30457, HD066534
  • variants thereof especially the variants with one or more substitutions in the following positions: 26, 30, 33, 82, 37, 106, 118, 128, 133, 149, 150, 160, 178, 182, 186, 193, 203, 214, 231, 256, 257, 258, 269, 270, 272, 283, 295, 296, 298, 299, 303, 304, 305, 311, 314, 315, 318, 319, 339, 345, 361, 378, 383, 419, 421, 437, 441, 444, 445, 446, 447, 450, 461, 471, 482, 484, optionally that also contain the deletions of D183* and G184*.
  • variants exhibiting at least 90% identity with the wild-type enzyme from Bacillus SP722 (CBU30453, HD066526), especially variants with deletions in the 183 and 184 positions.
  • Suitable commercially available alpha-amylases are Duramyl®, Liquezyme® Termamyl®, Termamyl Ultra®, Natalase®, Supramyl®, Stainzyme®, Stainzyme Plus®, Fungamyl® and BAN® (Novozymes A/S), Bioamylase® and variants thereof (Biocon India Ltd.), Kemzym® AT 9000 (Biozym Ges. m.b.H, Austria), Rapidase®, Purastar®, Optisize HT Plus®, Enzysize®, Powerase® and Purastar Oxam®, Maxamyl® (Genencor International Inc.) and KAM® (KAO, Japan).
  • Suitable amylases are Natalase®, Stainzyme® and Stainzyme Plus®.
  • the composition may comprise a cellulase.
  • Suitable cellulases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Suitable cellulases include cellulases from the genera Bacillus, Pseudomonas, Humicola, Fusarium, Thielavia, Acremonium , e.g., the fungal cellulases produced from Humicola insolens, Myceliophthora thermophila and Fusarium oxysporum.
  • cellulases include Celluzyme®, and Carezyme® (Novozymes A/S), Clazinase®, and Puradax HA® (Genencor International Inc.), and KAC-500(B)® (Kao Corporation).
  • the cellulase can include microbial-derived endoglucanases exhibiting endo-beta-1,4-glucanase activity (E.C. 3.2.1.4), including a bacterial polypeptide endogenous to a member of the genus Bacillus sp. AA349 and mixtures thereof. Suitable endoglucanases are sold under the tradenames Celluclean® and Whitezyme® (Novozymes A/S, Bagsvaerd, Denmark).
  • the composition may comprise a cleaning cellulase belonging to Glycosyl Hydrolase family 45 having a molecular weight of from 17 kDa to 30 kDa, for example the endoglucanases sold under the tradename Biotouch® NCD, DCC and DCL (AB Enzymes, Darmstadt, Germany).
  • a cleaning cellulase belonging to Glycosyl Hydrolase family 45 having a molecular weight of from 17 kDa to 30 kDa, for example the endoglucanases sold under the tradename Biotouch® NCD, DCC and DCL (AB Enzymes, Darmstadt, Germany).
  • Suitable cellulases may also exhibit xyloglucanase activity, such as Whitezyme®.
  • the composition may comprise a lipase.
  • Suitable lipases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Examples of useful lipases include lipases from Humicola (synonym Thermomyces ), e.g., from H. lanuginosa ( T. lanuginosus ), or from H. insolens , a Pseudomonas lipase , e.g., from P. alcaligenes or P. pseudoalcaligenes, P. cepacia, P. stutzeri, P. fluorescens, Pseudomonas sp. strain SD 705, P. wisconsinensis , a Bacillus lipase , e.g., from B. subtilis, B. stearothermophilus or B. pumilus.
  • the lipase may be a “first cycle lipase”, optionally a variant of the wild-type lipase from Thermomyces lanuginosus comprising T231R and N233R mutations.
  • the wild-type sequence is the 269 amino acids (amino acids 23-291) of the Swissprot accession number Swiss-Prot O59952 (derived from Thermomyces lanuginosus ( Humicola lanuginosa )).
  • Suitable lipases would include those sold under the tradenames Lipex®, Lipolex® and Lipoclean® by Novozymes, Bagsvaerd, Denmark.
  • composition may comprise a variant of Thermomyces lanuginosa (O59952) lipase having >90% identity with the wild type amino acid and comprising substitution(s) at T231 and/or N233, optionally T231R and/or N233R.
  • O59952 Thermomyces lanuginosa
  • Suitable xyloglucanase enzymes may have enzymatic activity towards both xyloglucan and amorphous cellulose substrates.
  • the enzyme may be a glycosyl hydrolase (GH) selected from GH families 5, 12, 44 or 74.
  • the glycosyl hydrolase selected from GH family 44 is particularly suitable.
  • Suitable glycosyl hydrolases from GH family 44 are the XYG1006 glycosyl hydrolase from Paenibacillus polyxyma (ATCC 832) and variants thereof.
  • Pectate lyase Suitable pectate lyases are either wild-types or variants of Bacillus -derived pectate lyases (CAF05441, AAU25568) sold under the tradenames Pectawash®, Pectaway® and X-Pect® (from Novozymes A/S, Bagsvaerd, Denmark).
  • Mannanase Suitable mannanases are sold under the tradenames Mannaway® (from Novozymes A/S, Bagsvaerd, Denmark), and Purabrite® (Genencor International Inc., Palo Alto, Calif.).
  • Suitable bleach enzymes include oxidoreductases, for example oxidases such as glucose, choline or carbohydrate oxidases, oxygenases, catalases, peroxidases, like halo-, chloro-, bromo-, lignin-, glucose- or manganese-peroxidases, dioxygenases or laccases (phenoloxidases, polyphenoloxidases).
  • oxidases such as glucose, choline or carbohydrate oxidases
  • oxygenases catalases
  • peroxidases like halo-, chloro-, bromo-, lignin-, glucose- or manganese-peroxidases, dioxygenases or laccases (phenoloxidases, polyphenoloxidases).
  • Suitable commercial products are sold under the Guardzyme® and Denilite® ranges from Novozymes.
  • organic compounds especially aromatic compounds
  • these compounds interact with the bleaching enzyme to enhance the activity of the oxidoreductase (enhancer) or to facilitate the electron flow (mediator) between the oxidizing enzyme and the stain typically over strongly different redox potentials.
  • Suitable bleaching enzymes include perhydrolases, which catalyse the formation of peracids from an ester substrate and peroxygen source.
  • Suitable perhydrolases include variants of the Mycobacterium smegmatis perhydrolase, variants of so-called CE-7 perhydrolases, and variants of wild-type subtilisin Carlsberg possessing perhydrolase activity.
  • Cutinase are defined by E.C. Class 3.1.1.73, optionally displaying at least 90%, or 95%, or most optionally at least 98% identity with a wild-type derived from one of Fusarium solani, Pseudomonas Mendocina or Humicola Insolens.
  • the relativity between two amino acid sequences is described by the parameter “identity”.
  • the alignment of two amino acid sequences is determined by using the Needle program from the EMBOSS package (http://emboss.org) version 2.8.0.
  • the Needle program implements the global alignment algorithm described in Needleman, S. B. and Wunsch, C. D. (1970) J. Mol. Biol. 48, 443-453.
  • the substitution matrix used is BLOSUM62, gap opening penalty is 10, and gap extension penalty is 0.5.
  • the composition may comprise an enzyme stabilizer.
  • Suitable enzyme stabilizers include polyols such as propylene glycol or glycerol, sugar or sugar alcohol, lactic acid, reversible protease inhibitor, boric acid, or a boric acid derivative, e.g., an aromatic borate ester, or a phenyl boronic acid derivative such as 4-formylphenyl boronic acid.
  • boron nil-boron enzyme stabilizer, preferably selected from polyols such as propylene glycol or glycerol, sugar or sugar alcohol.
  • substantially free it is typically meant: “comprises no deliberately added”. Free of boron also typically includes being free of sources of boron such as borax.
  • Suitable fabric-softening agents include clay, silicone and/or quaternary ammonium compounds.
  • Suitable clays include montmorillonite clay, hectorite clay and/or laponite clay.
  • a suitable clay is montmorillonite clay.
  • Suitable silicones include amino-silicones and/or polydimethylsiloxane (PDMS).
  • a suitable fabric softener is a particle comprising clay and silicone, such as a particle comprising montmorillonite clay and PDMS.
  • Suitable flocculants include polyethylene oxide; for example having an average molecular weight of from 300,000 Da to 900,000 Da.
  • Suitable suds suppressors include silicone and/or fatty acid such as stearic acid.
  • Structurant/thickener Structured liquids can either be internally structured, whereby the structure is formed by primary ingredients (e.g. surfactant material) and/or externally structured by providing a three dimensional matrix structure using secondary ingredients (e.g. polymers, clay and/or silicate material).
  • primary ingredients e.g. surfactant material
  • secondary ingredients e.g. polymers, clay and/or silicate material
  • the composition may comprise a structurant, preferably from 0.01 wt % to 5 wt %, from 0.1 wt % to 2.0 wt % structurant.
  • the structurant is typically selected from the group consisting of diglycerides and triglycerides, ethylene glycol distearate, microcrystalline cellulose, cellulose-based materials, microfiber cellulose, biopolymers, xanthan gum, gellan gum, and mixtures thereof.
  • a suitable structurant includes hydrogenated castor oil, and non-ethoxylated derivatives thereof. It may be preferred for the composition to substantially free of lipase, by substantially free it is typically meant: “comprises no deliberately added”.
  • composition comprises hydrogenated castor oil, and non-ethoxylated derivatives thereof.
  • a suitable structurant is U.S. Pat. No. 6,855,680, such structurants have a thread-like structuring system having a range of aspect ratios.
  • Other suitable structurants and the processes for making them are described in WO2010/034736.
  • Suitable perfumes include perfume microcapsules, polymer assisted perfume delivery systems including Schiff base perfume/polymer complexes, starch-encapsulated perfume accords, perfume-loaded zeolites, blooming perfume accords, and any combination thereof.
  • a suitable perfume microcapsule is melamine formaldehyde based, typically comprising perfume that is encapsulated by a shell comprising melamine formaldehyde. It may be highly suitable for such perfume microcapsules to comprise cationic and/or cationic precursor material in the shell, such as polyvinyl formamide (PVF) and/or cationically modified hydroxyethyl cellulose (catHEC).
  • PVF polyvinyl formamide
  • catHEC cationically modified hydroxyethyl cellulose
  • Suitable aesthetic particles include soap rings, lamellar aesthetic particles, geltin beads, carbonate and/or sulphate salt speckles, coloured clay particles, and any combination thereof.
  • the composition may comprise a solvent.
  • Preferred solvents include alcohols and/or glycols, preferably methanol, ethanol and/or propylene glycol.
  • the composition comprises no or minimal amounts of methanol and ethanol and instead comprises relatively high amounts of propylene glycol, for improved enzyme stability.
  • the composition comprises propylene glycol.
  • Suitable solvents include C 4 -C 14 ethers and diethers, glycols, alkoxylated glycols, C 6 -C 16 glycol ethers, alkoxylated aromatic alcohols, aromatic alcohols, aliphatic branched alcohols, alkoxylated aliphatic branched alcohols, alkoxylated linear C 1 -C 5 alcohols, linear C 1 -C 5 alcohols, amines, C 8 -C 14 alkyl and cycloalkyl hydrocarbons and halohydrocarbons, and mixtures thereof.
  • Preferred solvents are selected from methoxy octadecanol, 2-(2-ethoxyethoxy)ethanol, benzyl alcohol, 2-ethylbutanol and/or 2-methylbutanol, 1-methylpropoxyethanol and/or 2-methylbutoxyethanol, linear C 1 -C 5 alcohols such as methanol, ethanol, propanol, butyl diglycol ether (BDGE), butyltriglycol ether, tert-amyl alcohol, glycerol, isopropanol and mixtures thereof.
  • BDGE butyl diglycol ether
  • BDGE butyltriglycol ether
  • tert-amyl alcohol glycerol
  • isopropanol and mixtures thereof is selected from methoxy octadecanol, 2-(2-ethoxyethoxy)ethanol, benzyl alcohol, 2-ethylbutanol and/or 2-methylbutanol, 1-methylpropoxyethanol
  • Particularly preferred solvents which can be used herein are butoxy propoxy propanol, butyl diglycol ether, benzyl alcohol, butoxypropanol, propylene glycol, glycerol, ethanol, methanol, isopropanol and mixtures thereof.
  • Other suitable solvents include propylene glycol and diethylene glycol and mixtures thereof.
  • the composition may comprise less than 10 wt %, or less than 5 wt %, or less than 4 wt % or less than 3 wt % free water, or less than 2 wt % free water, or less than 1 wt % free water, and may even be anhydrous, typically comprising no deliberately added free water. Free water is typically measured using Karl Fischer titration. 2 g of the laundry detergent composition is extracted into 50 ml dry methanol at room temperature for 20 minutes and analyse 1 ml of the methanol by Karl Fischer titration.
  • the detergent laundry composition comprises a malodor control component.
  • the malodor control component may include at least one volatile aldehyde and an acid catalyst.
  • the malodor control component is designed to deliver genuine malodor neutralization and not function merely by covering up or masking odors.
  • a genuine malodor neutralization provides a sensory and analytically measurable (e.g. gas chromatograph) malodor reduction.
  • the composition will reduce malodors in the vapor and/or liquid phase.
  • the malodor control component includes a mixture of volatile aldehydes that neutralize malodors in vapor and/or liquid phase via chemical reactions. Such volatile aldehydes are also called reactive aldehydes (RA). Volatile aldehydes may react with amine-based odors, following the path of Schiff-base formation. Volatiles aldehydes may also react with sulfur-based odors, forming thiol acetals, hemi thiolacetals, and thiol esters in vapor and/or liquid phase. It may be desirable for these vapor and/or liquid phase volatile aldehydes to have virtually no negative impact on the desired perfume character of a product. Aldehydes that are partially volatile may be considered a volatile aldehyde as used herein.
  • Suitable volatile aldehydes may have a vapor pressure (VP) in the range of about 0.0001 torr to 100 torr, alternatively about 0.0001 torr to about 10 torr, alternatively about 0.001 torr to about 50 torr, alternatively about 0.001 torr to about 20 torr, alternatively about 0.001 torr to about 0.100 torr, alternatively about 0.001 torr to 0.06 torr, alternatively about 0.001 torr to 0.03 torr, alternatively about 0.005 torr to about 20 torr, alternatively about 0.01 torr to about 20 torr, alternatively about 0.01 torr to about 15 torr, alternatively about 0.01 torr to about 10 torr, alternatively about 0.05 torr to about 10 torr, measured at 25° C.
  • VP vapor pressure
  • the volatile aldehydes may also have a certain boiling point (B.P.) and octanol/water partition coefficient (P).
  • B.P. boiling point
  • P octanol/water partition coefficient
  • the boiling point referred to herein is measured under normal standard pressure of 760 mmHg.
  • the boiling points of many volatile aldehydes, at standard 760 mm Hg are given in, for example, “Perfume and Flavor Chemicals (Aroma Chemicals),” written and published by Steffen Arctander, 1969.
  • the octanol/water partition coefficient of a volatile aldehyde is the ratio between its equilibrium concentrations in octanol and in water.
  • the partition coefficients of the volatile aldehydes used in the malodor control component may be more conveniently given in the form of their logarithm to the base 10, logP.
  • the logP values of many volatile aldehydes have been reported. See, e.g., the Pomona92 database, available from Daylight Chemical Information Systems, Inc. (Daylight CIS), Irvine, Calif. However, the logP values are most conveniently calculated by the “CLOGP” program, also available from Daylight CIS. This program also lists experimental logP values when they are available in the Pomona92 database.
  • ClogP The “calculated logP” (ClogP) is determined by the fragment approach of Hansch and Leo (cf., A. Leo, in Comprehensive Medicinal Chemistry, Vol. 4, C. Hansch, P. G. Sammens, J. B. Taylor and C. A. Ramsden, Eds., p. 295, Pergamon Press, 1990).
  • the fragment approach is based on the chemical structure of each volatile aldehyde, and takes into account the numbers and types of atoms, the atom connectivity, and chemical bonding.
  • the ClogP values which are the most reliable and widely used estimates for this physicochemical property, are alternatively used instead of the experimental logP values in the selection of volatile aldehydes for the malodor control component.
  • the ClogP values may be defined by four groups and the volatile aldehydes may be selected from one or more of these groups.
  • the first group comprises volatile aldehydes that have a B.P. of about 250° C. or less and ClogP of about 3 or less.
  • the second group comprises volatile aldehydes that have a B.P. of 250° C. or less and ClogP of 3.0 or more.
  • the third group comprises volatile aldehydes that have a B.P. of 250° C. or more and ClogP of 3.0 or less.
  • the fourth group comprises volatile aldehydes that have a B.P. of 250° C. or more and ClogP of 3.0 or more.
  • the malodor control component may comprise any combination of volatile aldehydes from one or more of the ClogP groups.
  • the malodor control component of the present invention may comprise, by total weight of the malodor control component, from about 0% to about 30% of volatile aldehydes from group 1, alternatively about 25%; and/or about 0% to about 10% of volatile aldehydes from group 2, alternatively about 10%; and/or from about 10% to about 30% of volatile aldehydes from group 3, alternatively about 30%; and/or from about 35% to about 60% of volatile aldehydes from group 4, alternatively about 35%.
  • Exemplary volatile aldehydes which may be used in a malodor control component include, but are not limited to, Adoxal (2,6,10-Trimethyl-9-undecenal), Bourgeonal (4-t-butylbenzenepropionaldehyde), Lilestralis 33 (2-methyl-4-t-butylphenyl)propanal), Cinnamic aldehyde, cinnamaldehyde (phenyl propenal, 3-phenyl-2-propenal), Citral, Geranial, Neral (dimethyloctadienal, 3,7-dimethyl-2,6-octadien-1-al), Cyclal C (2,4-dimethyl-3-cyclohexen-1-carbaldehyde), Florhydral (3-(3-Isopropyl-phenyl)-butyraldehyde), Citronellal (3,7-dimethyl 6-octenal), Cymal, cyclamen aldehyde, Cyclos
  • aldehydes include, but are not limited to, acetaldehyde (ethanal), pentanal, valeraldehyde, amylaldehyde, Scentenal (octahydro-5-methoxy-4,7-Methano-1H-indene-2-carboxaldehyde), propionaldehyde (propanal), Cyclocitral, beta-cyclocitral, (2,6,6-trimethyl-1-cyclohexene-1-acetaldehyde), Iso Cyclocitral (2,4,6-trimethyl-3-cyclohexene-1-carboxaldehyde), isobutyraldehyde, butyraldehyde, isovaleraldehyde (3-methyl butyraldehyde), methylbutyraldehyde (2-methyl butyraldehyde, 2-methyl butanal), Dihydrocitronellal (3,7-dimethyl octan
  • the malodor control component includes a mixture of two or more volatile aldehydes selected from the group consisting of 2-ethoxy Benzylaldehyde, 2-isopropyl-5-methyl-2-hexenal, 5-methyl Furfural, 5-methyl-thiophene-carboxaldehyde, Adoxal, p-anisaldehyde, Benzylaldehyde, Bourgenal, Cinnamic aldehyde, Cymal, Decyl aldehyde, Floral super, Florhydral, Helional, Lauric aldehyde, Ligustral, Lyral, Melonal, o-anisaldehyde, Pino acetaldehyde, P.T. Bucinal, Thiophene carboxaldehyde, trans-4-Decenal, trans trans 2,4-Nonadienal, Undecyl aldehyde, and mixtures thereof.
  • the malodor control component includes fast reacting volatile aldehydes.
  • Fast reacting volatile aldehydes refers to volatile aldehydes that either (1) reduce amine odors by 20% or more in less than 40 seconds; or (2) reduce thiol odors by 20% or more in less than 30 minutes.
  • the malodor control component includes a mixture of the volatile aldehydes listed in Table 1 and referred to herein as Accord A.
  • the malodor control component includes a mixture of the volatile aldehydes listed in Table 2 and referred to herein as Accord B.
  • the malodor control component includes a mixture of about 71.2% volatile aldehydes, the remainder being other an ester and an alcohol perfume raw material. This mixture is listed in Table 3 and referred to herein as Accord C.
  • Accords A, B, or C can be formulated in with other perfume raw materials in an amount, for example, of about 10% by weight of the malodor control component. Additionally, the individual volatile aldehydes or a various combination of the volatile aldehydes can be formulated into a malodor control component.
  • the volatile aldehydes may be present in an amount up to 100%, by weight of the malodor control component, alternatively from 1% to about 100%, alternatively from about 2% to about 100%, alternatively from about 3% to about 100%, alternatively about 50% to about 100%, alternatively about 70% to about 100%, alternatively about 80% to about 100%, alternatively from about 1% to about 20%, alternatively from about 1% to about 10%, alternatively from about 1% to about 5%, alternatively from about 1% to about 3%, alternatively from about 2% to about 20%, alternatively from about 3% to about 20%, alternatively from about 4% to about 20%, alternatively from about 5% to about 20%, by weight of the composition.
  • the present invention may include poly-aldehydes, for example, di-, tri-, tetra-aldehydes.
  • Such embodiments may include laundry detergents, additive, and the like for leave-on, through the wash, and rinse-off type of applications.
  • the malodor control component of the present invention may include an effective amount of an acid catalyst to neutralize sulfur-based malodors. It has been found that certain mild acids have an impact on aldehyde reactivity with thiols in the liquid and vapor phase. It has been found that the reaction between thiol and aldehyde is a catalytic reaction that follows the mechanism of hemiacetal and acetal formation path. When the present malodor control component contains an acid catalyst and contacts a sulfur-based malodor, the volatile aldehyde reacts with thiol. This reaction may form a thiol acetal compound, thus, neutralizing the sulfur-based odor. Without an acid catalyst, only hemi-thiol acetal is formed.
  • Suitable acid catalysts have a VP, as reported by Scifinder, in the range of about 0.001 torr to about 38 torr, measured at 25° C., alternatively about 0.001 torr to about 14 torr, alternatively from about 0.001 to about 1, alternatively from about 0.001 to about 0.020, alternatively about 0.005 to about 0.020, alternatively about 0.010 to about 0.020.
  • VP as reported by Scifinder
  • the acid catalyst may be a weak acid.
  • a weak acid is characterized by an acid dissociation constant, K a , which is an equilibrium constant for the dissociation of a weak acid; the pKa being equal to minus the decimal logarithm of K a .
  • the acid catalyst may have a pKa from about 4.0 to about 6.0, alternatively from about 4.3 and 5.7, alternatively from about 4.5 to about 5, alternatively from about 4.7 to about 4.9.
  • Suitable acid catalyst include those listed in Table 4.
  • Such acid catalysts may have a VP of about 0.001 torr to about 0.020 torr, measured at 25° C., alternatively about 0.005 torr to about 0.020 torr, alternatively about 0.010 torr to about 0.020 torr.
  • acid catalyst include 5-methyl thiophene carboxaldehyde with carboxylic acid impurity, succinic acid, or benzoic acid.
  • the malodor control component may include about 0.05% to about 5%, alternatively about 0.1% to about 1.0%, alternatively about 0.1% to about 0.5%, alternatively about 0.1% to about 0.4%, alternatively about 0.4% to about 1.5%, alternatively about 0.4% of an acid catalyst by weight of the malodor control component.
  • the present malodor control component may include about 0.4% of acetic acid (50:50 TC:DPM, 0.4% acetic acid).
  • the acid catalyst may increase the efficacy of the volatile aldehyde on malodors in comparison to the malodor efficacy of the volatile aldehyde on its own.
  • 1% volatile aldehyde and 1.5% benzoic acid provides malodor removal benefit equal to or better than 5% volatile aldehyde alone.
  • the malodor control component may have a pH from about 3 to about 8, alternatively from about 4 to about 7, alternatively from about, alternatively from about 4 to about 6.
  • the malodor control component may, optionally, include odor masking agents, odor blocking agents, and/or diluents.
  • the malodor control component may include a mixture of volatile aldehydes for neutralizing a malodor, perfume ionones, and a diluent.
  • the malodor control component may include 100% volatile aldehydes.
  • Odor-masking agents refer to known compounds (e.g. perfume raw materials) that mask or hide a malodorous compound. Odor-masking may include a compound with a non-offensive or pleasant smell that is dosed such it limits the ability to sense a malodorous compound. Odor-masking may involve the selection of compounds which coordinate with an anticipated malodor to change the perception of the overall scent provided by the combination of odorous compounds.
  • Oxy blocking agents refer to known compounds that dull the human sense of smell.
  • Exemplary diluents include dipropylene glycol methyl ether, and 3-methoxy-3-methyl-1-butanol, and mixtures thereof.
  • the malodor control component may also, optionally, include perfume raw materials that solely provide a hedonic benefit (i.e. that do not neutralize malodors yet provide a pleasant fragrance). Suitable perfumes are disclosed in U.S. Pat. No. 6,248,135, which is incorporated in its entirety by reference.
  • the method of laundering fabric typically comprises the step of contacting the composition to water to form a wash liquor, and laundering fabric in said wash liquor, wherein typically the wash liquor has a temperature of above 0° C. to 90° C., or to 60° C., or to 40° C., or to 30° C., or to 20° C., or to 10° C., or even to 8° C.
  • the fabric may be contacted to the water prior to, or after, or simultaneous with, contacting the laundry detergent composition with water.
  • the composition can be used in pre-treatment applications.
  • the wash liquor is formed by contacting the laundry detergent to water in such an amount so that the concentration of laundry detergent composition in the wash liquor is from above 0 g/l to 5 g/l, or from 1 g/l, and to 4.5 g/l, or to 4.0 g/l, or to 3.5 g/l, or to 3.0 g/l, or to 2.5 g/l, or even to 2.0 g/l, or even to 1.5 g/l.
  • the method of laundering fabric may be carried out in a top-loading or front-loading automatic washing machine, or can be used in a hand-wash laundry application.
  • the wash liquor formed and concentration of laundry detergent composition in the wash liquor is that of the main wash cycle. Any input of water during any optional rinsing step(s) is not included when determining the volume of the wash liquor.
  • the wash liquor may comprise 40 litres or less of water, or 30 litres or less, or 20 litres or less, or 10 litres or less, or 8 litres or less, or even 6 litres or less of water.
  • the wash liquor may comprise from above 0 to 15 litres, or from 2 litres, and to 12 litres, or even to 8 litres of water.
  • 50 g or less, or 45 g or less, or 40 g or less, or 35 g or less, or 30 g or less, or 25 g or less, or 20 g or less, or even 15 g or less, or even 10 g or less of the composition is contacted to water to form the wash liquor.
  • compositions herein may be packaged in any suitable container, such as bottles, alternatively plastic bottles, optionally equipped with an electrical or manual trigger spray-head.
  • Anionic detersive surfactant such as alkyl benzene from 8 wt % to 15 wt % sulphonate, alkyl ethoxylated sulphate and mixtures thereof
  • Non-ionic detersive surfactant such as alkyl ethoxylated from 0.5 wt % to 4 wt % alcohol
  • Cationic detersive surfactant such as quaternary ammonium from 0 to 4 wt % compounds
  • Other detersive surfactant such as zwiterionic detersive from 0 wt % to 4 wt % surfactants, amphoteric surfactants and mixtures thereof
  • Carboxylate polymer such as co-polymers of maleic acid and from 1 wt % to 4 wt % acrylic acid
  • Polyethylene glycol polymer such as a polyethylene glycol from 0.5 wt % to 4 wt % polymer
  • Malodor standards are prepared by pipeting 1 mL of butylamine (amine-based malodor) and butanethiol (sulfur-based malodor) into a 1.2 liter gas sampling bag. The bag is then filled to volume with nitrogen and allowed to sit for at least 12 hours to equilibrate.
  • a 1 ⁇ L sample of each volatile aldehyde listed in Table 6 and of each Accord (A, B, and C) listed in Tables 1 to 3 is pipeted into individual 10 mL silanized headspace vials.
  • the vials are sealed and allowed to equilibrate for at least 12 hours. Repeat 4 times for each sample (2 for butylamine analysis and 2 for butanethiol analysis).
  • 1.5 mL of the target malodor standard is injected into each 10 mL vial.
  • the vials containing a sample+malodor standard are held at room temperature for 30 minutes.
  • a 1 mL headspace syringe is then used to inject 250 ⁇ L of each sample/malodor into a GC/MS split/splitless inlet.
  • a 1 mL headspace syringe is used to inject 500 ⁇ L of each sample/malodor immediately into the GC/MS split/splitless inlet.
  • a GC pillow is used for the amine analysis to shorten the run times.
  • Samples are then analyzed using a GC/MS with a DB-5, 20 m, 1 ⁇ m film thickness column with an MPS-2 autosampler equipment with static headspace function. Data is analyzed by ion extraction on each total ion current (56 for thiol and 30 for amine) and the area is used to calculate the percent reduction from the malodor standard for each sample.
  • Table 6 shows the effect of certain volatile aldehydes on neutralizing amine-based and sulfur based malodors at 40 seconds and 30 minutes, respectively.
  • Table 7 shows the percent reduction of butylamine and butaniethiol at 40 seconds and 30 minutes, respectively, for Accords A, B, and C.
  • FIG. 1 demonstrates that low vapor pressure acid catalysts provide up to 3 times better reduction of sulfur-based malodors in comparison to the control.
  • Tables 8 and 9 show that a perfume mixture having as little as 1% volatile aldehyde along with 1.5% acid catalyst performs better at reducing butylamine and butanethiol than the same perfume mixture having 5% volatile aldehyde.

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Abstract

A detergent laundry composition comprising a malodor control component having at least one volatile aldehyde and an acid catalyst, and methods of laundry detergents are provided.

Description

    CROSS REFERENCE TO RELATED APPLICATIONS
  • This application claims the benefit of U.S. Provisional Application No. 61/287,348, filed Dec. 17, 2009 and U.S. Provisional Application No. 61/287,369, filed Dec. 17, 2009 and U.S. Provisional No. 61/287,383, filed Dec. 17, 2009.
    • FIELD OF THE INVENTION
  • The present invention relates to detergent laundry compositions having a malodor control component, and methods of laundering detergents.
    • BACKGROUND OF THE INVENTION
  • Consumers of laundry detergent products desire not only clean clothes from their laundry products, but also fresh clothes that do not have a malodor. They especially desire excellent freshness the first time they wear or use a fabric after it has been laundered. Typically, detergent manufactures have developed sophisticated perfume technology to achieve this improved freshness.
  • However, not all odors are effectively controlled by products on the market because amine-based malodors such as fish and urine malodors, and sulfur-based malodors such as garlic, onion, foot, and fecal malodors are difficult to combat. Further, the time required for a product to noticeably combat malodors may create consumer doubt as to a product's efficacy on malodors. For example, the consumer may finish laundering a fabric and leave the area before the product begins to noticeably reduce the malodor.
  • The difficulty in overcoming a broad range of malodors has spawned a diverse assortment of products to neutralize, mask, or contain the malodors. There remains a need for a detergent laundry composition that quickly neutralizes and is effective on a broad range of malodors, including amine-based and sulfur-based malodors, while not overpowering malodors with an overwhelming perfume.
    • SUMMARY OF THE INVENTION
  • The present invention relates to a laundry detergent composition as defined by claim 1.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a graph showing butanethiol reduction by thiophene carboxaldehyde in combination with various acid catalysts.
    •  DETAILED DESCRIPTION OF THE INVENTION
  • The present invention relates to a laundry detergent composition for laundering fabrics and reducing malodors found thereon. The present invention also relates to methods of laundering fabrics.
    • I. Detergent Laundry Composition
  • The composition can be any form, for example a liquid, gel form, solid, or any combination thereof. The composition may be in any unit dose form, for example a pouch.
  • Typically, the composition is a fully formulated laundry detergent composition, not a portion thereof such as a spray-dried or agglomerated particle that only forms part of the laundry detergent composition. However, it is within the scope of the present invention for an additional rinse additive composition (e.g. fabric conditioner or enhancer), or a main wash additive composition (e.g. bleach additive) to also be used in combination with the laundry detergent composition during the method of the present invention. Although, it may be preferred for no bleach additive composition is used in combination with the laundry detergent composition during the method of the present invention.
  • The composition typically comprises detergent ingredients. Suitable detergent ingredients include: detersive surfactants including anionic detersive surfactants, non-ionic detersive surfactants, cationic detersive surfactants, zwitterionic detersive surfactants, amphoteric detersive surfactants, and any combination thereof; polymers including carboxylate polymers, polyethylene glycol polymers, polyester soil release polymers such as terephthalate polymers, amine polymers, cellulosic polymers, dye transfer inhibition polymers, dye lock polymers such as a condensation oligomer produced by condensation of imidazole and epichlorhydrin, optionally in ratio of 1:4:1, hexamethylenediamine derivative polymers, and any combination thereof; builders including zeolites, phosphates, citrate, and any combination thereof; buffers and alkalinity sources including carbonate salts and/or silicate salts; fillers including sulphate salts and bio-filler materials; bleach including bleach activators, sources of available oxygen, pre-formed peracids, bleach catalysts, reducing bleach, and any combination thereof; chelants; photobleach; hueing agents; brighteners; enzymes including proteases, amylases, cellulases, lipases, xylogucanases, pectate lyases, mannanases, bleaching enzymes, cutinases, and any combination thereof; fabric softeners including clay, silicones, quaternary ammonium fabric-softening agents, and any combination thereof; flocculants such as polyethylene oxide; perfume including starch encapsulated perfume accords, perfume microcapsules, perfume loaded zeolites, schif base reaction products of ketone perfume raw materials and polyamines, blooming perfumes, and any combination thereof; aesthetics including soap rings, lamellar aesthetic particles, geltin beads, carbonate and/or sulphate salt speckles, coloured clay, and any combination thereof: and any combination thereof.
  • Solid particulate laundry detergent composition: In the case of a solid laundry detergent composition, the composition may comprises a plurality of chemically different particles, such as spray-dried base detergent particles and/or agglomerated base detergent particles and/or extruded base detergent particles, in combination with one or more, typically two or more, or three or more, or four or more, or five or more, or six or more, or even ten or more particles selected from: surfactant particles, including surfactant agglomerates, surfactant extrudates, surfactant needles, surfactant noodles, surfactant flakes; polymer particles such as cellulosic polymer particles, polyester particles, polyamine particles, terephthalate polymer particles, polyethylene glycol polymer particles; builder particles, such as sodium carbonate and sodium silicate co-builder particles, phosphate particles, zeolite particles, silicate salt particles, carbonate salt particles; filler particles such as sulphate salt particles; dye transfer inhibitor particles; dye fixative particles; bleach particles, such as percarbonate particles, especially coated percarbonate particles, such as percarbonate coated with carbonate salt, sulphate salt, silicate salt, borosilicate salt, or any combination thereof, perborate particles, bleach catalyst particles such as transition metal bleach catalyst particles, or oxaziridinium-based bleach catalyst particles, pre-formed peracid particles, especially coated pre-formed peracid particles, and co-bleach particles of bleach activator, source of hydrogen peroxide and optionally bleach catalyst; bleach activator particles such as oxybenzene sulphonate bleach activator particles and tetra acetyl ethylene diamine bleach activator particles; chelant particles such as chelant agglomerates; hueing dye particles; brightener particles; enzyme particles such as protease prills, lipase prills, cellulase prills, amylase prills, mannanase prills, pectate lyase prills, xyloglucanase prills, bleaching enzyme prills, cutinase prills and co-prills of any of these enzymes; clay particles such as montmorillonite particles or particles of clay and silicone; flocculant particles such as polyethylene oxide particles; wax particles such as wax agglomerates; perfume particles such as perfume microcapsules, especially melamine formaldehyde-based perfume microcapsules, starch encapsulated perfume accord particles, and pro-perfume particles such as Schiff base reaction product particles; aesthetic particles such as coloured noodles or needles or lamellae particles, and soap rings including coloured soap rings; and any combination thereof.
  • Liquid laundry detergent composition: The composition may also be in liquid form, for example a liquid or gel form, or any combination thereof. The composition may be in any unit dose form, for example a pouch.
  • In the case of a liquid laundry detergent composition, the composition may include: (i) detersive surfactant comprising anionic detersive surfactant and non-ionic surfactant, wherein the weight ratio of anionic detersive surfactant to non-ionic detersive surfactant is greater than 1:1; (ii) surfactancy boosting polymer; (iii) from 0 wt % to 10 wt % fatty acid; (iv) silicone suds suppressor; (v) structurant; (vi) enzymes; and (vii) nil-boron enzyme stabilizer. The electrolytic strength of the composition at a concentration of 1 g/l in de-ionized water and at a temperature of 25° C. in mScm−1 is preferably less than 200 mScm−1. It may be preferred to keep low levels of fatty acid in the composition, and/or to use alkanolamines, preferably tertiary alkanolamines having a pKa of less than 9.0, or even less than 8.0, preferred are tri-isopropanolamine (TIPA), and/or triethanolamine (TEA), especially preferred is TEA due to its low molecular weight and low pKa, to provide some buffering capacity in the formulation.
  • Preferably, a liquid laundry detergent composition comprises: (i) detersive surfactant comprising anionic detersive surfactant and non-ionic surfactant, wherein the weight ratio of anionic detersive surfactant to non-ionic detersive surfactant is greater than 1:1; and optionally wherein the anionic detersive surfactant has a hydrophilic index (HIC) of from 8.0 to 9.1; (ii) surfactancy boosting polymer; (iii) from 0 wt % to 5 wt % fatty acid; (iv) silicone suds suppressor; (v) structurant; (vi) enzymes; and (vii) non-boron enzyme stabilizer; and wherein the electrolytic strength of the composition at a concentration of 1 g/l in de-ionized water and at a temperature of 25° C. in mScm−1 is preferably less than 200 mScm−1.
  • Detersive surfactant: The composition typically comprises detersive surfactant. Suitable detersive surfactants include anionic detersive surfactants, non-ionic detersive surfactant, cationic detersive surfactants, zwitterionic detersive surfactants, amphoteric detersive surfactants, and any combination thereof.
  • Anionic detersive surfactant: Suitable anionic detersive surfactants include sulphate and sulphonate detersive surfactants.
  • Suitable sulphonate detersive surfactants include alkyl benzene sulphonate, such as C10-13 alkyl benzene sulphonate. Suitable alkyl benzene sulphonate (LAS) is obtainable, or even obtained, by sulphonating commercially available linear alkyl benzene (LAB); suitable LAB includes low 2-phenyl LAB, such as those supplied by Sasol under the tradename Isochem® or those supplied by Petresa under the tradename Petrelab®, other suitable LAB include high 2-phenyl LAB, such as those supplied by Sasol under the tradename Hyblene®. Another suitable anionic detersive surfactant is alkyl benzene sulphonate that is obtained by DETAL catalyzed process, although other synthesis routes, such as HF, may also be suitable.
  • Suitable sulphate detersive surfactants include alkyl sulphate, such as C8-18 alkyl sulphate, or predominantly C12 alkyl sulphate. The alkyl sulphate may be derived from natural sources, such as coco and/or tallow. Alternative, the alkyl sulphate may be derived from synthetic sources such as C12-15 alkyl sulphate.
  • Another suitable sulphate detersive surfactant is alkyl alkoxylated sulphate, such as alkyl ethoxylated sulphate, or a C8-18 alkyl alkoxylated sulphate, or a C8-18 alkyl ethoxylated sulphate. The alkyl alkoxylated sulphate may have an average degree of alkoxylation of from 0.5 to 20, or from 0.5 to 10. The alkyl alkoxylated sulphate may be a C8-18 alkyl ethoxylated sulphate, typically having an average degree of ethoxylation of from 0.5 to 10, or from 0.5 to 7, or from 0.5 to 5 or from 0.5 to 3.
  • The alkyl sulphate, alkyl alkoxylated sulphate and alkyl benzene sulphonates may be linear or branched, substituted or un-substituted.
  • The anionic detersive surfactant may be a mid-chain branched anionic detersive surfactant, such as a mid-chain branched alkyl sulphate and/or a mid-chain branched alkyl benzene sulphonate. The mid-chain branches are typically C1-4 alkyl groups, such as methyl and/or ethyl groups.
  • Another suitable anionic detersive surfactant is alkyl ethoxy carboxylate.
  • The anionic detersive surfactants are typically present in their salt form, typically being complexed with a suitable cation. Suitable counter-ions include Na+ and K+, substituted ammonium such as C1-C6 alkanolammonium such as mono-ethanolamine (MEA) tri-ethanolamine (TEA), di-ethanolamine (DEA), and any mixture thereof.
  • Non-ionic detersive surfactant: Suitable non-ionic detersive surfactants are selected from the group consisting of: C8-C18 alkyl ethoxylates, such as, NEODOL® non-ionic surfactants from Shell; C6-C12 alkyl phenol alkoxylates wherein optionally the alkoxylate units are ethyleneoxy units, propyleneoxy units or a mixture thereof; C12-C18 alcohol and C6-C12 alkyl phenol condensates with ethylene oxide/propylene oxide block polymers such as Pluronic® from BASF; C14-C22 mid-chain branched alcohols; C14-C22 mid-chain branched alkyl alkoxylates, typically having an average degree of alkoxylation of from 1 to 30; alkylpolysaccharides, such as alkylpolyglycosides; polyhydroxy fatty acid amides; ether capped poly(oxyalkylated) alcohol surfactants; and mixtures thereof.
  • Suitable non-ionic detersive surfactants are alkyl polyglucoside and/or an alkyl alkoxylated alcohol.
  • Suitable non-ionic detersive surfactants include alkyl alkoxylated alcohols, such as C8-18 alkyl alkoxylated alcohol, or a C8-18 alkyl ethoxylated alcohol. The alkyl alkoxylated alcohol may have an average degree of alkoxylation of from 0.5 to 50, or from 1 to 30, or from 1 to 20, or from 1 to 10. The alkyl alkoxylated alcohol may be a C8-18 alkyl ethoxylated alcohol, typically having an average degree of ethoxylation of from 1 to 10, or from 1 to 7, or from 1 to 5, or from 3 to 7. The alkyl alkoxylated alcohol can be linear or branched, and substituted or un-substituted.
  • Suitable nonionic detersive surfactants include secondary alcohol-based detersive surfactants having the formula:
  • Figure US20110146001A1-20110623-C00001
  • wherein R1=linear or branched, substituted or unsubstituted, saturated or unsaturated C2-8 alkyl;
  • wherein R2=linear or branched, substituted or unsubstituted, saturated or unsaturated C2-8 alkyl,
  • wherein the total number of carbon atoms present in R1+R2 moieties is in the range of from 7 to 13;
  • wherein EO/PO are alkoxy moieties selected from ethoxy, propoxy, or mixtures thereof, optionally the EO/PO alkoxyl moieties are in random or block configuration;
  • wherein n is the average degree of alkoxylation and is in the range of from 4 to 10.
  • Other suitable non-ionic detersive surfactants include EO/PO block co-polymer surfactants, such as the Plurafac® series of surfactants available from BASF, and sugar-derived surfactants such as alkyl N-methyl glucose amide.
  • Cationic detersive surfactant: Suitable cationic detersive surfactants include alkyl pyridinium compounds, alkyl quaternary ammonium compounds, alkyl quaternary phosphonium compounds, alkyl ternary sulphonium compounds, and mixtures thereof.
  • Suitable cationic detersive surfactants are quaternary ammonium compounds having the general formula:

  • (R)(R1)(R2)(R3)N+X−
  • wherein, R is a linear or branched, substituted or unsubstituted C6-18 alkyl or alkenyl moiety, R1 and R2 are independently selected from methyl or ethyl moieties, R3 is a hydroxyl, hydroxymethyl or a hydroxyethyl moiety, X is an anion which provides charge neutrality, suitable anions include: halides, such as chloride; sulphate; and sulphonate. Suitable cationic detersive surfactants are mono-C6-18 alkyl mono-hydroxyethyl di-methyl quaternary ammonium chlorides. Suitable cationic detersive surfactants are mono-C8-10 alkyl mono-hydroxyethyl di-methyl quaternary ammonium chloride, mono-C10-12 alkyl mono-hydroxyethyl di-methyl quaternary ammonium chloride and mono-C10 alkyl mono-hydroxyethyl di-methyl quaternary ammonium chloride.
  • Zwitterionic and/or amphoteric detersive surfactant: Suitable zwitterionic and/or amphoteric detersive surfactants include amine oxide such as dodecyldimethylamine N-oxide, alkanolamine sulphobetaines, coco-amidopropyl betaines, HN+—R—CO2 − based surfactants, wherein R can be any bridging group, such as alkyl, alkoxy, aryl or amino acids.
  • Polymer: Suitable polymers include carboxylate polymers, polyethylene glycol polymers, polyester soil release polymers such as terephthalate polymers, amine polymers, cellulosic polymers, dye transfer inhibition polymers, dye lock polymers such as a condensation oligomer produced by condensation of imidazole and epichlorhydrin, optionally in ratio of 1:4:1, hexamethylenediamine derivative polymers, and any combination thereof.
  • Carboxylate polymer: Suitable carboxylate polymers include maleate/acrylate random copolymer or polyacrylate homopolymer. The carboxylate polymer may be a polyacrylate homopolymer having a molecular weight of from 4,000 Da to 9,000 Da, or from 6,000 Da to 9,000 Da. Other suitable carboxylate polymers are co-polymers of maleic acid and acrylic acid, and may have a molecular weight in the range of from 4,000 Da to 90,000 Da.
  • Polyethylene glycol polymer: Suitable polyethylene glycol polymers include random graft co-polymers comprising: (i) hydrophilic backbone comprising polyethylene glycol; and (ii) hydrophobic side chain(s) selected from the group consisting of: C4-C25 alkyl group, polypropylene, polybutylene, vinyl ester of a saturated C1-C6 mono-carboxylic acid, C1-C6 alkyl ester of acrylic or methacrylic acid, and mixtures thereof. Suitable polyethylene glycol polymers have a polyethylene glycol backbone with random grafted polyvinyl acetate side chains. The average molecular weight of the polyethylene glycol backbone can be in the range of from 2,000 Da to 20,000 Da, or from 4,000 Da to 8,000 Da. The molecular weight ratio of the polyethylene glycol backbone to the polyvinyl acetate side chains can be in the range of from 1:1 to 1:5, or from 1:1.2 to 1:2. The average number of graft sites per ethylene oxide units can be less than 1, or less than 0.8, the average number of graft sites per ethylene oxide units can be in the range of from 0.5 to 0.9, or the average number of graft sites per ethylene oxide units can be in the range of from 0.1 to 0.5, or from 0.2 to 0.4. A suitable polyethylene glycol polymer is Sokalan HP22.
  • Polyester soil release polymers: Suitable polyester soil release polymers have a structure as defined by one of the following structures (I), (II) or (III):

  • —[(OCHR1—CHR2)a—O—OC—Ar—CO—]d  (I)

  • —[(OCHR3—CHR4)b—O—OC-sAr—CO—]e  (II)

  • —[(OCHR5—CHR6)c—OR7]f  (III)
  • wherein:
  • a, b and c are from 1 to 200;
  • d, e and f are from 1 to 50;
  • Ar is a 1,4-substituted phenylene;
  • sAr is 1,3-substituted phenylene substituted in position 5 with SO3Me;
  • Me is Li, K, Mg/2, Ca/2, Al/3, ammonium, mono-, di-, tri-, or tetraalkylammonium wherein the alkyl groups are C1-C18 alkyl or C2-C10 hydroxyalkyl, or any mixture thereof;
  • R1, R2, R3, R4, R5 and R6 are independently selected from H or C1-C18 n- or iso-alkyl; and
  • R7 is a linear or branched C1-C18 alkyl, or a linear or branched C2-C30 alkenyl, or a cycloalkyl group with 5 to 9 carbon atoms, or a C8-C30 aryl group, or a C6-C30 arylalkyl group. Suitable polyester soil release polymers are terephthalate polymers having the structure of formula (I) or (II) above.
  • Suitable polyester soil release polymers include the Repel-o-tex series of polymers such as Repel-o-tex SF2 (Rhodia) and/or the Texcare series of polymers such as Texcare SRA300 (Clariant).
  • Amine polymer: Suitable amine polymers include polyethylene imine polymers, such as alkoxylated polyalkyleneimines, optionally comprising a polyethylene and/or polypropylene oxide block.
  • Cellulosic polymer: The composition can comprise cellulosic polymers, such as polymers selected from alkyl cellulose, alkyl alkoxyalkyl cellulose, carboxyalkyl cellulose, alkyl carboxyalkyl, and any combination thereof. Suitable cellulosic polymers are selected from carboxymethyl cellulose, methyl cellulose, methyl hydroxyethyl cellulose, methyl carboxymethyl cellulose, and mixtures thereof. The carboxymethyl cellulose can have a degree of carboxymethyl substitution from 0.5 to 0.9 and a molecular weight from 100,000 Da to 300,000 Da. Another suitable cellulosic polymer is hydrophobically modified carboxymethyl cellulose, such as Finnfix SH-1 (CP Kelco).
  • Other suitable cellulosic polymers may have a degree of substitution (DS) of from 0.01 to 0.99 and a degree of blockiness (DB) such that either DS+DB is of at least 1.00 or DB+2DS−DS2 is at least 1.20. The substituted cellulosic polymer can have a degree of substitution (DS) of at least 0.55. The substituted cellulosic polymer can have a degree of blockiness (DB) of at least 0.35. The substituted cellulosic polymer can have a DS+DB, of from 1.05 to 2.00. A suitable substituted cellulosic polymer is carboxymethylcellulose.
  • Another suitable cellulosic polymer is cationically modified hydroxyethyl cellulose.
  • Dye transfer inhibitor polymer: Suitable dye transfer inhibitor (DTI) polymers include polyvinyl pyrrolidone (PVP), vinyl co-polymers of pyrrolidone and imidazoline (PVPVI), polyvinyl N-oxide (PVNO), and any mixture thereof.
  • Hexamethylenediamine derivative polymers: Suitable polymers include hexamethylenediamine derivative polymers, typically having the formula:

  • R2(CH3)N+(CH2)6N+(CH3)R2.2X−
  • wherein X− is a suitable counter-ion, for example chloride, and R is a poly(ethylene glycol) chain having an average degree of ethoxylation of from 20 to 30. Optionally, the poly(ethylene glycol) chains may be independently capped with sulphate and/or sulphonate groups, typically with the charge being balanced by reducing the number of X− counter-ions, or (in cases where the average degree of sulphation per molecule is greater than two), introduction of Y+ counter-ions, for example sodium cations.
  • Builder: Suitable builders include zeolites, phosphates, citrates, and any combination thereof.
  • Zeolite builder: The composition typically comprises from 0 wt % to 10 wt %, zeolite builder, or to 8 wt %, or to 6 wt %, or to 4 wt %, or to 3 wt %, or to 2 wt %, or even to 1 wt % zeolite builder. The composition may even be substantially free of zeolite builder; substantially free means “no deliberately added”. Typical zeolite builders include zeolite A, zeolite P, zeolite MAP, zeolite X and zeolite Y.
  • Phosphate builder: The composition typically comprises from 0 wt % to 10 wt % phosphate builder, or to 8 wt %, or to 6 wt %, or to 4 wt %, or to 3 wt %, or to 2 wt %, or even to 1 wt % phosphate builder. The composition may even be substantially free of phosphate builder; substantially free means “no deliberately added”. A typical phosphate builder is sodium tri-polyphosphate (STPP).
  • Citrate: A suitable citrate is sodium citrate. However, citric acid may also be incorporated into the composition, which can form citrate in the wash liquor.
  • Buffer and alkalinity source: Suitable buffers and alkalinity sources include carbonate salts and/or silicate salts and/or double salts such as burkeitte.
  • Carbonate salt: A suitable carbonate salt is sodium carbonate and/or sodium bicarbonate. The composition may comprise bicarbonate salt. It may be suitable for the composition to comprise low levels of carbonate salt, for example, it may be suitable for the composition to comprise from 0 wt % to 10 wt % carbonate salt, or to 8 wt %, or to 6 wt %, or to 4 wt %, or to 3 wt %, or to 2 wt %, or even to 1 wt % carbonate salt. The composition may even be substantially free of carbonate salt; substantially free means “no deliberately added”.
  • The carbonate salt may have a weight average mean particle size of from 100 to 500 micrometers. Alternatively, the carbonate salt may have a weight average mean particle size of from 10 to 25 micrometers.
  • Silicate salt: The composition may comprise from 0 wt % to 20 wt % silicate salt, or to 15 wt %, or to 10 wt %, or to 5 wt %, or to 4 wt %, or even to 2 wt %, and may comprise from above 0 wt %, or from 0.5 wt %, or even from 1 wt % silicate salt. The silicate can be crystalline or amorphous. Suitable crystalline silicates include crystalline layered silicate, such as SKS-6. Other suitable silicates include 1.6R silicate and/or 2.0R silicate. A suitable silicate salt is sodium silicate. Another suitable silicate salt is sodium metasilicate.
  • Filler: The composition may comprise from 0 wt % to 70% filler. Suitable fillers include sulphate salts and/or bio-filler materials.
  • Sulphate salt: A suitable sulphate salt is sodium sulphate. The sulphate salt may have a weight average mean particle size of from 100 to 500 micrometers, alternatively, the sulphate salt may have a weight average mean particle size of from 10 to 45 micrometers.
  • Bio-filler material: A suitable bio-filler material is alkali and/or bleach treated agricultural waste.
  • Bleach: The composition may comprise bleach. Alternatively, the composition may be substantially free of bleach; substantially free means “no deliberately added”. Suitable bleach includes bleach activators, sources of available oxygen, pre-formed peracids, bleach catalysts, reducing bleach, and any combination thereof. If present, the bleach, or any component thereof, for example the pre-formed peracid, may be coated, such as encapsulated, or clathrated, such as with urea or cyclodextrin.
  • Bleach activator: Suitable bleach activators include: tetraacetylethylenediamine (TAED); oxybenzene sulphonates such as nonanoyl oxybenzene sulphonate (NOBS), caprylamidononanoyl oxybenzene sulphonate (NACA-OBS), 3,5,5-trimethyl hexanoyloxybenzene sulphonate (Iso-NOBS), dodecyl oxybenzene sulphonate (LOBS), and any mixture thereof; caprolactams; pentaacetate glucose (PAG); nitrile quaternary ammonium; imide bleach activators, such as N-nonanoyl-N-methyl acetamide; and any mixture thereof.
  • Source of available oxygen: A suitable source of available oxygen (AvOx) is a source of hydrogen peroxide, such as percarbonate salts and/or perborate salts, such as sodium percarbonate. The source of peroxygen may be at least partially coated, or even completely coated, by a coating ingredient such as a carbonate salt, a sulphate salt, a silicate salt, borosilicate, or any mixture thereof, including mixed salts thereof. Suitable percarbonate salts can be prepared by a fluid bed process or by a crystallization process. Suitable perborate salts include sodium perborate mono-hydrate (PB1), sodium perborate tetra-hydrate (PB4), and anhydrous sodium perborate which is also known as fizzing sodium perborate. Other suitable sources of AvOx include persulphate, such as oxone. Another suitable source of AvOx is hydrogen peroxide.
  • Pre-formed peracid: A suitable pre-formed peracid is N,N-pthaloylamino peroxycaproic acid (PAP).
  • Bleach catalyst: Suitable bleach catalysts include oxaziridinium-based bleach catalysts, transition metal bleach catalysts and bleaching enzymes.
  • Oxaziridinium-based bleach catalyst: A suitable oxaziridinium-based bleach catalyst has the formula:
  • Figure US20110146001A1-20110623-C00002
  • wherein: R1 is selected from the group consisting of: H, a branched alkyl group containing from 3 to 24 carbons, and a linear alkyl group containing from 1 to 24 carbons; R1 can be a branched alkyl group comprising from 6 to 18 carbons, or a linear alkyl group comprising from 5 to 18 carbons, R1 can be selected from the group consisting of: 2-propylheptyl, 2-butyloctyl, 2-pentylnonyl, 2-hexyldecyl, n-hexyl, n-octyl, n-decyl, n-dodecyl, n-tetradecyl, n-hexadecyl, n-octadecyl, iso-nonyl, iso-decyl, iso-tridecyl and iso-pentadecyl; R2 is independently selected from the group consisting of: H, a branched alkyl group comprising from 3 to 12 carbons, and a linear alkyl group comprising from 1 to 12 carbons; optionally R2 is independently selected from H and methyl groups; and n is an integer from 0 to 1.
  • Transition metal bleach catalyst: The composition may include transition metal bleach catalyst, typically comprising copper, iron, titanium, ruthenium, tungsten, molybdenum, and/or manganese cations. Suitable transition metal bleach catalysts are manganese-based transition metal bleach catalysts.
  • Reducing bleach: The composition may comprise a reducing bleach. However, the composition may be substantially free of reducing bleach; substantially free means “no deliberately added”. Suitable reducing bleach include sodium sulphite and/or thiourea dioxide (TDO).
  • Co-bleach particle: The composition may comprise a co-bleach particle. Typically, the co-bleach particle comprises a bleach activator and a source of peroxide. It may be highly suitable for a large amount of bleach activator relative to the source of hydrogen peroxide to be present in the co-bleach particle. The weight ratio of bleach activator to source of hydrogen peroxide present in the co-bleach particle can be at least 0.3:1, or at least 0.6:1, or at least 0.7:1, or at least 0.8:1, or at least 0.9:1, or at least 1.0:1.0, or even at least 1.2:1 or higher.
  • The co-bleach particle can comprise: (i) bleach activator, such as TAED; and (ii) a source of hydrogen peroxide, such as sodium percarbonate. The bleach activator may at least partially, or even completely, enclose the source of hydrogen peroxide.
  • The co-bleach particle may comprise a binder. Suitable binders are carboxylate polymers such as polyacrylate polymers, and/or surfactants including non-ionic detersive surfactants and/or anionic detersive surfactants such as linear C11-C13 alkyl benzene sulphonate.
  • The co-bleach particle may comprise bleach catalyst, such as an oxaziridium-based bleach catalyst.
  • Chelant: Suitable chelants are selected from: diethylene triamine pentaacetate, diethylene triamine penta(methyl phosphonic acid), ethylene diamine-N′N′-disuccinic acid, ethylene diamine tetraacetate, ethylene diamine tetra(methylene phosphonic acid), hydroxyethane di(methylene phosphonic acid), and any combination thereof. A suitable chelant is ethylene diamine-N′N′-disuccinic acid (EDDS) and/or hydroxyethane diphosphonic acid (HEDP). The laundry detergent composition may comprise ethylene diamine-N′N′-disuccinic acid or salt thereof. The ethylene diamine-N′N′-disuccinic acid may be in S,S enantiomeric form. The composition may comprise 4,5-dihydroxy-m-benzenedisulfonic acid disodium salt. Suitable chelants may also be calcium crystal growth inhibitors.
  • Calcium carbonate crystal growth inhibitor: The composition may comprise a calcium carbonate crystal growth inhibitor, such as one selected from the group consisting of: 1-hydroxyethanediphosphonic acid (HEDP) and salts thereof; N,N-dicarboxymethyl-2-aminopentane-1,5-dioic acid and salts thereof; 2-phosphonobutane-1,2,4-tricarboxylic acid and salts thereof; and any combination thereof.
  • Photobleach: Suitable photobleaches are zinc and/or aluminium sulphonated phthalocyanines.
  • Hueing agent: The hueing agent (also defined herein as hueing dye) is typically formulated to deposit onto fabrics from the wash liquor so as to improve fabric whiteness perception. The hueing agent is typically blue or violet. It may be suitable that the hueing dye(s) have a peak absorption wavelength of from 550 nm to 650 nm, or from 570 nm to 630 nm. The hueing agent may be a combination of dyes which together have the visual effect on the human eye as a single dye having a peak absorption wavelength on polyester of from 550 nm to 650 nm, or from 570 nm to 630 nm. This may be provided for example by mixing a red and green-blue dye to yield a blue or violet shade.
  • Dyes are typically coloured organic molecules which are soluble in aqueous media that contain surfactants. Dyes maybe selected from the classes of basic, acid, hydrophobic, direct and polymeric dyes, and dye-conjugates. Suitable polymeric hueing dyes are commercially available, for example from Milliken, Spartanburg, S.C., USA.
  • Examples of suitable dyes are violet DD, direct violet 7, direct violet 9, direct violet 11, direct violet 26, direct violet 31, direct violet 35, direct violet 40, direct violet 41, direct violet 51, direct violet 66, direct violet 99, acid violet 50, acid blue 9, acid violet 17, acid black 1, acid red 17, acid blue 29, solvent violet 13, disperse violet 27 disperse violet 26, disperse violet 28, disperse violet 63 and disperse violet 77, basic blue 16, basic blue 65, basic blue 66, basic blue 67, basic blue 71, basic blue 159, basic violet 19, basic violet 35, basic violet 38, basic violet 48; basic blue 3, basic blue 75, basic blue 95, basic blue 122, basic blue 124, basic blue 141, thiazolium dyes, reactive blue 19, reactive blue 163, reactive blue 182, reactive blue 96, Liquitint® Violet CT (Milliken, Spartanburg, USA) and Azo-CM-Cellulose (Megazyme, Bray, Republic of Ireland). Other suitable hueing agents are hueing dye-photobleach conjugates, such as the conjugate of sulphonated zinc phthalocyanine with direct violet 99. A particularly suitable hueing agent is a combination of acid red 52 and acid blue 80, or the combination of direct violet 9 and solvent violet 13.
  • Brightener: Suitable brighteners are stilbenes, such as brightener 15. Other suitable brighteners are hydrophobic brighteners, and brightener 49. The brightener may be in micronized particulate form, having a weight average particle size in the range of from 3 to 30 micrometers, or from 3 micrometers to 20 micrometers, or from 3 to 10 micrometers. The brightener can be alpha or beta crystalline form.
  • Enzyme: Suitable enzymes include proteases, amylases, cellulases, lipases, xylogucanases, pectate lyases, mannanases, bleaching enzymes, cutinases, and mixtures thereof.
  • For the enzymes, accession numbers and IDs shown in parentheses refer to the entry numbers in the databases Genbank, EMBL and/or Swiss-Prot. For any mutations, standard 1-letter amino acid codes are used with a * representing a deletion. Accession numbers prefixed with DSM refer to micro-organisms deposited at Deutsche Sammlung von Mikroorganismen and Zellkulturen GmbH, Mascheroder Weg 1b, 38124 Brunswick (DSMZ).
  • Protease. The composition may comprise a protease. Suitable proteases include metalloproteases and/or serine proteases, including neutral or alkaline microbial serine proteases, such as subtilisins (EC 3.4.21.62). Suitable proteases include those of animal, vegetable or microbial origin. In one aspect, such suitable protease may be of microbial origin. The suitable proteases include chemically or genetically modified mutants of the aforementioned suitable proteases. In one aspect, the suitable protease may be a serine protease, such as an alkaline microbial protease or/and a trypsin-type protease. Examples of suitable neutral or alkaline proteases include:
  • (a) subtilisins (EC 3.4.21.62), including those derived from Bacillus, such as Bacillus lentus, Bacillus alkalophilus (P27963, ELYA_BACAO), Bacillus subtilis, Bacillus amyloliquefaciens (P00782, SUBT_BACAM), Bacillus pumilus (P07518) and Bacillus gibsonii (DSM14391).
  • (b) trypsin-type or chymotrypsin-type proteases, such as trypsin (e.g. of porcine or bovine origin), including the Fusarium protease and the chymotrypsin proteases derived from Cellumonas (A2RQE2).
  • (c) metalloproteases, including those derived from Bacillus amyloliquefaciens (P06832, NPRE_BACAM).
  • Suitable proteases include those derived from Bacillus gibsonii or Bacillus Lentus such as subtilisin 309 (P29600) and/or DSM 5483 (P29599).
  • Suitable commercially available protease enzymes include: those sold under the trade names Alcalase®, Savinase®, Primase®, Durazym®, Polarzyme®, Kannase®, Liquanase®, Liquanase Ultra®, Savinase Ultra®, Ovozyme®, Neutrase®, Everlase® and Esperase® by Novozymes A/S (Denmark); those sold under the tradename Maxatase®, Maxacal®, Maxapem®, Properase®, Purafect®, Purafect Prime®, Purafect Ox®, FN3®, FN4®, Excellase® and Purafect OXP® by Genencor International; those sold under the tradename Opticlean® and Optimase® by Solvay Enzymes; those available from Henkel/Kemira, namely BLAP (P29599 having the following mutations S99D+S101 R+S103A+V104I+G159S), and variants thereof including BLAP R (BLAP with S3T+V4I+V199M+V205I+L217D), BLAP X (BLAP with S3T+V4I+V205I) and BLAP F49 (BLAP with S3T+V4I+A194P+V199M+V205I+L217D) all from Henkel/Kemira; and KAP (Bacillus alkalophilus subtilisin with mutations A230V+S256G+S259N) from Kao.
  • Amylase: Suitable amylases are alpha-amylases, including those of bacterial or fungal origin. Chemically or genetically modified mutants (variants) are included. A suitable alkaline alpha-amylase is derived from a strain of Bacillus, such as Bacillus licheniformis, Bacillus amyloliquefaciens, Bacillus stearothermophilus, Bacillus subtilis, or other Bacillus sp., such as Bacillus sp. NCIB 12289, NCIB 12512, NCIB 12513, sp 707, DSM 9375, DSM 12368, DSMZ no. 12649, KSM AP1378, KSM K36 or KSM K38. Suitable amylases include:
  • (a) alpha-amylase derived from Bacillus licheniformis (P06278, AMY_BACLI), and variants thereof, especially the variants with substitutions in one or more of the following positions: 15, 23, 105, 106, 124, 128, 133, 154, 156, 181, 188, 190, 197, 202, 208, 209, 243, 264, 304, 305, 391, 408, and 444.
  • (b) AA560 amylase (CBU30457, HD066534) and variants thereof, especially the variants with one or more substitutions in the following positions: 26, 30, 33, 82, 37, 106, 118, 128, 133, 149, 150, 160, 178, 182, 186, 193, 203, 214, 231, 256, 257, 258, 269, 270, 272, 283, 295, 296, 298, 299, 303, 304, 305, 311, 314, 315, 318, 319, 339, 345, 361, 378, 383, 419, 421, 437, 441, 444, 445, 446, 447, 450, 461, 471, 482, 484, optionally that also contain the deletions of D183* and G184*.
  • (c) variants exhibiting at least 90% identity with the wild-type enzyme from Bacillus SP722 (CBU30453, HD066526), especially variants with deletions in the 183 and 184 positions.
  • Suitable commercially available alpha-amylases are Duramyl®, Liquezyme® Termamyl®, Termamyl Ultra®, Natalase®, Supramyl®, Stainzyme®, Stainzyme Plus®, Fungamyl® and BAN® (Novozymes A/S), Bioamylase® and variants thereof (Biocon India Ltd.), Kemzym® AT 9000 (Biozym Ges. m.b.H, Austria), Rapidase®, Purastar®, Optisize HT Plus®, Enzysize®, Powerase® and Purastar Oxam®, Maxamyl® (Genencor International Inc.) and KAM® (KAO, Japan). Suitable amylases are Natalase®, Stainzyme® and Stainzyme Plus®.
  • Cellulase: The composition may comprise a cellulase. Suitable cellulases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Suitable cellulases include cellulases from the genera Bacillus, Pseudomonas, Humicola, Fusarium, Thielavia, Acremonium, e.g., the fungal cellulases produced from Humicola insolens, Myceliophthora thermophila and Fusarium oxysporum.
  • Commercially available cellulases include Celluzyme®, and Carezyme® (Novozymes A/S), Clazinase®, and Puradax HA® (Genencor International Inc.), and KAC-500(B)® (Kao Corporation).
  • The cellulase can include microbial-derived endoglucanases exhibiting endo-beta-1,4-glucanase activity (E.C. 3.2.1.4), including a bacterial polypeptide endogenous to a member of the genus Bacillus sp. AA349 and mixtures thereof. Suitable endoglucanases are sold under the tradenames Celluclean® and Whitezyme® (Novozymes A/S, Bagsvaerd, Denmark).
  • The composition may comprise a cleaning cellulase belonging to Glycosyl Hydrolase family 45 having a molecular weight of from 17 kDa to 30 kDa, for example the endoglucanases sold under the tradename Biotouch® NCD, DCC and DCL (AB Enzymes, Darmstadt, Germany).
  • Suitable cellulases may also exhibit xyloglucanase activity, such as Whitezyme®.
  • Lipase. The composition may comprise a lipase. Suitable lipases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Examples of useful lipases include lipases from Humicola (synonym Thermomyces), e.g., from H. lanuginosa (T. lanuginosus), or from H. insolens, a Pseudomonas lipase, e.g., from P. alcaligenes or P. pseudoalcaligenes, P. cepacia, P. stutzeri, P. fluorescens, Pseudomonas sp. strain SD 705, P. wisconsinensis, a Bacillus lipase, e.g., from B. subtilis, B. stearothermophilus or B. pumilus.
  • The lipase may be a “first cycle lipase”, optionally a variant of the wild-type lipase from Thermomyces lanuginosus comprising T231R and N233R mutations. The wild-type sequence is the 269 amino acids (amino acids 23-291) of the Swissprot accession number Swiss-Prot O59952 (derived from Thermomyces lanuginosus (Humicola lanuginosa)). Suitable lipases would include those sold under the tradenames Lipex®, Lipolex® and Lipoclean® by Novozymes, Bagsvaerd, Denmark.
  • The composition may comprise a variant of Thermomyces lanuginosa (O59952) lipase having >90% identity with the wild type amino acid and comprising substitution(s) at T231 and/or N233, optionally T231R and/or N233R.
  • Xyloglucanase: Suitable xyloglucanase enzymes may have enzymatic activity towards both xyloglucan and amorphous cellulose substrates. The enzyme may be a glycosyl hydrolase (GH) selected from GH families 5, 12, 44 or 74. The glycosyl hydrolase selected from GH family 44 is particularly suitable. Suitable glycosyl hydrolases from GH family 44 are the XYG1006 glycosyl hydrolase from Paenibacillus polyxyma (ATCC 832) and variants thereof.
  • Pectate lyase: Suitable pectate lyases are either wild-types or variants of Bacillus-derived pectate lyases (CAF05441, AAU25568) sold under the tradenames Pectawash®, Pectaway® and X-Pect® (from Novozymes A/S, Bagsvaerd, Denmark).
  • Mannanase: Suitable mannanases are sold under the tradenames Mannaway® (from Novozymes A/S, Bagsvaerd, Denmark), and Purabrite® (Genencor International Inc., Palo Alto, Calif.).
  • Bleaching enzyme: Suitable bleach enzymes include oxidoreductases, for example oxidases such as glucose, choline or carbohydrate oxidases, oxygenases, catalases, peroxidases, like halo-, chloro-, bromo-, lignin-, glucose- or manganese-peroxidases, dioxygenases or laccases (phenoloxidases, polyphenoloxidases). Suitable commercial products are sold under the Guardzyme® and Denilite® ranges from Novozymes. It may be advantageous for additional organic compounds, especially aromatic compounds, to be incorporated with the bleaching enzyme; these compounds interact with the bleaching enzyme to enhance the activity of the oxidoreductase (enhancer) or to facilitate the electron flow (mediator) between the oxidizing enzyme and the stain typically over strongly different redox potentials.
  • Other suitable bleaching enzymes include perhydrolases, which catalyse the formation of peracids from an ester substrate and peroxygen source. Suitable perhydrolases include variants of the Mycobacterium smegmatis perhydrolase, variants of so-called CE-7 perhydrolases, and variants of wild-type subtilisin Carlsberg possessing perhydrolase activity.
  • Cutinase: Suitable cutinases are defined by E.C. Class 3.1.1.73, optionally displaying at least 90%, or 95%, or most optionally at least 98% identity with a wild-type derived from one of Fusarium solani, Pseudomonas Mendocina or Humicola Insolens.
  • Identity. The relativity between two amino acid sequences is described by the parameter “identity”. For purposes of the present invention, the alignment of two amino acid sequences is determined by using the Needle program from the EMBOSS package (http://emboss.org) version 2.8.0. The Needle program implements the global alignment algorithm described in Needleman, S. B. and Wunsch, C. D. (1970) J. Mol. Biol. 48, 443-453. The substitution matrix used is BLOSUM62, gap opening penalty is 10, and gap extension penalty is 0.5.
  • Enzyme stabilizer. The composition may comprise an enzyme stabilizer. Suitable enzyme stabilizers include polyols such as propylene glycol or glycerol, sugar or sugar alcohol, lactic acid, reversible protease inhibitor, boric acid, or a boric acid derivative, e.g., an aromatic borate ester, or a phenyl boronic acid derivative such as 4-formylphenyl boronic acid. It may be preferred for the composition to comprise a nil-boron enzyme stabilizer, preferably selected from polyols such as propylene glycol or glycerol, sugar or sugar alcohol. It may even be preferred for the composition to be substantially free of boron. By substantially free it is typically meant: “comprises no deliberately added”. Free of boron also typically includes being free of sources of boron such as borax.
  • Fabric-softener: Suitable fabric-softening agents include clay, silicone and/or quaternary ammonium compounds. Suitable clays include montmorillonite clay, hectorite clay and/or laponite clay. A suitable clay is montmorillonite clay. Suitable silicones include amino-silicones and/or polydimethylsiloxane (PDMS). A suitable fabric softener is a particle comprising clay and silicone, such as a particle comprising montmorillonite clay and PDMS.
  • Flocculant: Suitable flocculants include polyethylene oxide; for example having an average molecular weight of from 300,000 Da to 900,000 Da.
  • Suds suppressor: Suitable suds suppressors include silicone and/or fatty acid such as stearic acid.
  • Structurant/thickener. Structured liquids can either be internally structured, whereby the structure is formed by primary ingredients (e.g. surfactant material) and/or externally structured by providing a three dimensional matrix structure using secondary ingredients (e.g. polymers, clay and/or silicate material).
  • The composition may comprise a structurant, preferably from 0.01 wt % to 5 wt %, from 0.1 wt % to 2.0 wt % structurant. The structurant is typically selected from the group consisting of diglycerides and triglycerides, ethylene glycol distearate, microcrystalline cellulose, cellulose-based materials, microfiber cellulose, biopolymers, xanthan gum, gellan gum, and mixtures thereof. A suitable structurant includes hydrogenated castor oil, and non-ethoxylated derivatives thereof. It may be preferred for the composition to substantially free of lipase, by substantially free it is typically meant: “comprises no deliberately added”. This is especially preferred when the composition comprises hydrogenated castor oil, and non-ethoxylated derivatives thereof. A suitable structurant is U.S. Pat. No. 6,855,680, such structurants have a thread-like structuring system having a range of aspect ratios. Other suitable structurants and the processes for making them are described in WO2010/034736.
  • Perfume: Suitable perfumes include perfume microcapsules, polymer assisted perfume delivery systems including Schiff base perfume/polymer complexes, starch-encapsulated perfume accords, perfume-loaded zeolites, blooming perfume accords, and any combination thereof. A suitable perfume microcapsule is melamine formaldehyde based, typically comprising perfume that is encapsulated by a shell comprising melamine formaldehyde. It may be highly suitable for such perfume microcapsules to comprise cationic and/or cationic precursor material in the shell, such as polyvinyl formamide (PVF) and/or cationically modified hydroxyethyl cellulose (catHEC).
  • Aesthetic: Suitable aesthetic particles include soap rings, lamellar aesthetic particles, geltin beads, carbonate and/or sulphate salt speckles, coloured clay particles, and any combination thereof.
  • Solvent: The composition may comprise a solvent. Preferred solvents include alcohols and/or glycols, preferably methanol, ethanol and/or propylene glycol. Preferably, the composition comprises no or minimal amounts of methanol and ethanol and instead comprises relatively high amounts of propylene glycol, for improved enzyme stability. Preferably, the composition comprises propylene glycol.
  • Suitable solvents include C4-C14 ethers and diethers, glycols, alkoxylated glycols, C6-C16 glycol ethers, alkoxylated aromatic alcohols, aromatic alcohols, aliphatic branched alcohols, alkoxylated aliphatic branched alcohols, alkoxylated linear C1-C5 alcohols, linear C1-C5 alcohols, amines, C8-C14 alkyl and cycloalkyl hydrocarbons and halohydrocarbons, and mixtures thereof.
  • Preferred solvents are selected from methoxy octadecanol, 2-(2-ethoxyethoxy)ethanol, benzyl alcohol, 2-ethylbutanol and/or 2-methylbutanol, 1-methylpropoxyethanol and/or 2-methylbutoxyethanol, linear C1-C5 alcohols such as methanol, ethanol, propanol, butyl diglycol ether (BDGE), butyltriglycol ether, tert-amyl alcohol, glycerol, isopropanol and mixtures thereof. Particularly preferred solvents which can be used herein are butoxy propoxy propanol, butyl diglycol ether, benzyl alcohol, butoxypropanol, propylene glycol, glycerol, ethanol, methanol, isopropanol and mixtures thereof. Other suitable solvents include propylene glycol and diethylene glycol and mixtures thereof.
  • Free Water: The composition may comprise less than 10 wt %, or less than 5 wt %, or less than 4 wt % or less than 3 wt % free water, or less than 2 wt % free water, or less than 1 wt % free water, and may even be anhydrous, typically comprising no deliberately added free water. Free water is typically measured using Karl Fischer titration. 2 g of the laundry detergent composition is extracted into 50 ml dry methanol at room temperature for 20 minutes and analyse 1 ml of the methanol by Karl Fischer titration.
    • Malodor Control Component
  • The detergent laundry composition comprises a malodor control component. The malodor control component may include at least one volatile aldehyde and an acid catalyst. The malodor control component is designed to deliver genuine malodor neutralization and not function merely by covering up or masking odors. A genuine malodor neutralization provides a sensory and analytically measurable (e.g. gas chromatograph) malodor reduction. Thus, if the malodor control component delivers a genuine malodor neutralization, the composition will reduce malodors in the vapor and/or liquid phase.
  • 1. Volatile Aldehydes
  • The malodor control component includes a mixture of volatile aldehydes that neutralize malodors in vapor and/or liquid phase via chemical reactions. Such volatile aldehydes are also called reactive aldehydes (RA). Volatile aldehydes may react with amine-based odors, following the path of Schiff-base formation. Volatiles aldehydes may also react with sulfur-based odors, forming thiol acetals, hemi thiolacetals, and thiol esters in vapor and/or liquid phase. It may be desirable for these vapor and/or liquid phase volatile aldehydes to have virtually no negative impact on the desired perfume character of a product. Aldehydes that are partially volatile may be considered a volatile aldehyde as used herein.
  • Suitable volatile aldehydes may have a vapor pressure (VP) in the range of about 0.0001 torr to 100 torr, alternatively about 0.0001 torr to about 10 torr, alternatively about 0.001 torr to about 50 torr, alternatively about 0.001 torr to about 20 torr, alternatively about 0.001 torr to about 0.100 torr, alternatively about 0.001 torr to 0.06 torr, alternatively about 0.001 torr to 0.03 torr, alternatively about 0.005 torr to about 20 torr, alternatively about 0.01 torr to about 20 torr, alternatively about 0.01 torr to about 15 torr, alternatively about 0.01 torr to about 10 torr, alternatively about 0.05 torr to about 10 torr, measured at 25° C.
  • The volatile aldehydes may also have a certain boiling point (B.P.) and octanol/water partition coefficient (P). The boiling point referred to herein is measured under normal standard pressure of 760 mmHg. The boiling points of many volatile aldehydes, at standard 760 mm Hg are given in, for example, “Perfume and Flavor Chemicals (Aroma Chemicals),” written and published by Steffen Arctander, 1969.
  • The octanol/water partition coefficient of a volatile aldehyde is the ratio between its equilibrium concentrations in octanol and in water. The partition coefficients of the volatile aldehydes used in the malodor control component may be more conveniently given in the form of their logarithm to the base 10, logP. The logP values of many volatile aldehydes have been reported. See, e.g., the Pomona92 database, available from Daylight Chemical Information Systems, Inc. (Daylight CIS), Irvine, Calif. However, the logP values are most conveniently calculated by the “CLOGP” program, also available from Daylight CIS. This program also lists experimental logP values when they are available in the Pomona92 database. The “calculated logP” (ClogP) is determined by the fragment approach of Hansch and Leo (cf., A. Leo, in Comprehensive Medicinal Chemistry, Vol. 4, C. Hansch, P. G. Sammens, J. B. Taylor and C. A. Ramsden, Eds., p. 295, Pergamon Press, 1990). The fragment approach is based on the chemical structure of each volatile aldehyde, and takes into account the numbers and types of atoms, the atom connectivity, and chemical bonding. The ClogP values, which are the most reliable and widely used estimates for this physicochemical property, are alternatively used instead of the experimental logP values in the selection of volatile aldehydes for the malodor control component.
  • The ClogP values may be defined by four groups and the volatile aldehydes may be selected from one or more of these groups. The first group comprises volatile aldehydes that have a B.P. of about 250° C. or less and ClogP of about 3 or less. The second group comprises volatile aldehydes that have a B.P. of 250° C. or less and ClogP of 3.0 or more. The third group comprises volatile aldehydes that have a B.P. of 250° C. or more and ClogP of 3.0 or less. The fourth group comprises volatile aldehydes that have a B.P. of 250° C. or more and ClogP of 3.0 or more. The malodor control component may comprise any combination of volatile aldehydes from one or more of the ClogP groups.
  • In some embodiments, the malodor control component of the present invention may comprise, by total weight of the malodor control component, from about 0% to about 30% of volatile aldehydes from group 1, alternatively about 25%; and/or about 0% to about 10% of volatile aldehydes from group 2, alternatively about 10%; and/or from about 10% to about 30% of volatile aldehydes from group 3, alternatively about 30%; and/or from about 35% to about 60% of volatile aldehydes from group 4, alternatively about 35%.
  • Exemplary volatile aldehydes which may be used in a malodor control component include, but are not limited to, Adoxal (2,6,10-Trimethyl-9-undecenal), Bourgeonal (4-t-butylbenzenepropionaldehyde), Lilestralis 33 (2-methyl-4-t-butylphenyl)propanal), Cinnamic aldehyde, cinnamaldehyde (phenyl propenal, 3-phenyl-2-propenal), Citral, Geranial, Neral (dimethyloctadienal, 3,7-dimethyl-2,6-octadien-1-al), Cyclal C (2,4-dimethyl-3-cyclohexen-1-carbaldehyde), Florhydral (3-(3-Isopropyl-phenyl)-butyraldehyde), Citronellal (3,7-dimethyl 6-octenal), Cymal, cyclamen aldehyde, Cyclosal, Lime aldehyde (Alpha-methyl-p-isopropyl phenyl propyl aldehyde), Methyl Nonyl Acetaldehyde, aldehyde C12 MNA (2-methyl-1-undecanal), Hydroxycitronellal, citronellal hydrate (7-hydroxy-3,7-dimethyl octan-1-al), Helional (alpha-methyl-3,4-(methylenedioxy)-hydrocinnamaldehyde, hydrocinnamaldehyde (3-phenylpropanal, 3-phenylpropionaldehyde), Intreleven aldehyde (undec-10-en-1-al), Ligustral, Trivertal (2,4-dimethyl-3-cyclohexene-1-carboxaldehyde), Jasmorange, satinaldehyde (2-methyl-3-tolylproionaldehyde, 4-dimethylbenzenepropanal), Lyral (4-(4-hydroxy-4-methyl pentyl)-3-cyclohexene-1-carboxaldehyde), Melonal (2,6-Dimethyl-5-Heptenal), Methoxy Melonal (6-methoxy-2,6-dimethylheptanal), methoxycinnamaldehyde (trans-4-methoxycinnamaldehyde), Myrac aldehyde isohexenyl cyclohexenyl-carboxaldehyde, trifernal ((3-methyl-4-phenyl propanal, 3-phenyl butanal), lilial, P.T. Bucinal, lysmeral, benzenepropanal (4-tert-butyl-alpha-methyl-hydrocinnamaldehyde), Dupic al, tricyclodecylidenebutanal (4-Tricyclo5210-2,6decylidene-8butanal), Melafleur (1,2,3,4,5,6,7,8-octahydro-8,8-dimethyl-2-naphthaldehyde), Methyl Octyl Acetaldehyde, aldehyde C-11 MOA (2-methyl deca-1-al), Onicidal (2,6,10-trimethyl-5,9-undecadien-1-al), Citronellyl oxyacetaldehyde, Muguet aldehyde 50 (3,7-dimethyl-6-octenyl) oxyacetaldehyde), phenylacetaldehyde, Mefranal (3-methyl-5-phenyl pentanal), Triplal, Vertocitral dimethyl tetrahydrobenzene aldehyde (2,4-dimethyl-3-cyclohexene-1-carboxaldehyde), 2-phenylproprionaldehyde, Hydrotropaldehyde, Canthoxal, anisylpropanal 4-methoxy-alpha-methyl benzenepropanal (2-anisylidene propanal), Cylcemone A (1,2,3,4,5,6,7,8-octahydro-8,8-dimethyl-2-naphthaldehyde), and Precylcemone B (1-cyclohexene-1-carboxaldehyde).
  • Still other exemplary aldehydes include, but are not limited to, acetaldehyde (ethanal), pentanal, valeraldehyde, amylaldehyde, Scentenal (octahydro-5-methoxy-4,7-Methano-1H-indene-2-carboxaldehyde), propionaldehyde (propanal), Cyclocitral, beta-cyclocitral, (2,6,6-trimethyl-1-cyclohexene-1-acetaldehyde), Iso Cyclocitral (2,4,6-trimethyl-3-cyclohexene-1-carboxaldehyde), isobutyraldehyde, butyraldehyde, isovaleraldehyde (3-methyl butyraldehyde), methylbutyraldehyde (2-methyl butyraldehyde, 2-methyl butanal), Dihydrocitronellal (3,7-dimethyl octan-1-al), 2-Ethylbutyraldehyde, 3-Methyl-2-butenal, 2-Methylpentanal, 2-Methyl Valeraldehyde, Hexenal (2-hexenal, trans-2-hexenal), Heptanal, Octanal, Nonanal, Decanal, Lauric aldehyde, Tridecanal, 2-Dodecanal, Methylthiobutanal, Glutaraldehyde, Pentanedial, Glutaric aldehyde, Heptenal, cis or trans-Heptenal, Undecenal (2-, 10-), 2,4-octadienal, Nonenal (2-, 6-), Decenal (2-, 4-), 2,4-hexadienal, 2,4-Decadienal, 2,6-Nonadienal, Octenal, 2,6-dimethyl 5-heptenal, 2-isopropyl-5-methyl-2-hexenal, Trifernal, beta methyl Benzenepropanal, 2,6,6-Trimethyl-1-cyclohexene-1-acetaldehyde, phenyl Butenal (2-phenyl 2-butenal), 2.Methyl-3(p-isopropylphenyl)-propionaldehyde, 3-(p-isopropylphenyl)-propionaldehyde, p-Tolylacetaldehyde (4-methylphenylacetaldehyde), Anisaldehyde (p-methoxybenzene aldehyde), Benzaldehyde, Vernaldehyde (1-Methyl-4-(4-methylpentyl)-3-cyclohexenecarbaldehyde), Heliotropin (piperonal) 3,4-Methylene dioxy benzaldehyde, alpha-Amylcinnamic aldehyde, 2-pentyl-3-phenylpropenoic aldehyde, Vanillin (4-methoxy 3-hydroxy benzaldehyde), Ethyl vanillin (3-ethoxy 4-hydroxybenzaldehyde), Hexyl Cinnamic aldehyde, Jasmonal H (alpha-n-hexyl-cinnamaldehyde), Floralozone, (para-ethyl-alpha,alpha-dimethyl Hydrocinnamaldehyde), Acalea (p-methyl-alpha-pentylcinnamaldehyde), methylcinnamaldehyde, alpha-Methylcinnamaldehyde (2-methyl 3-pheny propenal), alpha-hexylcinnamaldehyde (2-hexyl 3-phenyl propenal), Salicylaldehyde (2-hydroxy benzaldehyde), 4-ethyl benzaldehyde, Cuminaldehyde (4-isopropyl benzaldehyde), Ethoxybenzaldehyde, 2,4-dimethylbenzaldehyde, Veratraldehyde (3,4-dimethoxybenzaldehyde), Syringaldehyde (3,5-dimethoxy 4-hydroxybenzaldehyde), Catechaldehyde (3,4-dihydroxybenzaldehyde), Safranal (2,6,6-trimethyl-1,3-diene methanal), Myrtenal (pin-2-ene-1-carbaldehyde), Perillaldehyde L-4(1-methylethenyl)-1-cyclohexene-1-carboxaldehyde), 2,4-Dimethyl-3-cyclohexene carboxaldehyde, 2-Methyl-2-pentenal, 2-methylpentenal, pyruvaldehyde, formyl Tricyclodecan, Mandarin aldehyde, Cyclemax, Pino acetaldehyde, Corps Iris, Maceal, and Corps 4322.
  • In one embodiment, the malodor control component includes a mixture of two or more volatile aldehydes selected from the group consisting of 2-ethoxy Benzylaldehyde, 2-isopropyl-5-methyl-2-hexenal, 5-methyl Furfural, 5-methyl-thiophene-carboxaldehyde, Adoxal, p-anisaldehyde, Benzylaldehyde, Bourgenal, Cinnamic aldehyde, Cymal, Decyl aldehyde, Floral super, Florhydral, Helional, Lauric aldehyde, Ligustral, Lyral, Melonal, o-anisaldehyde, Pino acetaldehyde, P.T. Bucinal, Thiophene carboxaldehyde, trans-4-Decenal, trans trans 2,4-Nonadienal, Undecyl aldehyde, and mixtures thereof.
  • In some embodiments, the malodor control component includes fast reacting volatile aldehydes. “Fast reacting volatile aldehydes” refers to volatile aldehydes that either (1) reduce amine odors by 20% or more in less than 40 seconds; or (2) reduce thiol odors by 20% or more in less than 30 minutes.
  • In one embodiment, the malodor control component includes a mixture of the volatile aldehydes listed in Table 1 and referred to herein as Accord A.
  • TABLE 1
    Accord A
    ClogP VP (torr)
    Material Wt. % CAS Number Group @25° C.
    Intreleven Aldehyde 5.000 112-45-8 3 0.060
    Florhydral 10.000 125109-85-5 4 0.008
    Floral Super 25.000 71077-31-1 3 0.030
    Scentenal 10.000 86803-90-9 2 0.010
    Cymal 25.000 103-95-7 4 0.007
    o-anisaldehyde 25.000 135-02-4 1 0.032
  • In another embodiment, the malodor control component includes a mixture of the volatile aldehydes listed in Table 2 and referred to herein as Accord B.
  • TABLE 2
    Accord B
    ClogP VP (torr)
    Material Wt. % CAS Number Group @25° C.
    Intreleven Aldehyde 2.000 112-45-8 3 0.060
    Florhydral 20.000 125109-85-5 4 0.008
    Floral Super 10.000 71077-31-1 3 0.030
    Scentenal 5.000 86803-90-9 2 0.010
    Cymal 25.000 103-95-7 4 0.007
    Floralozone 10.000 67634-14-4 4 0.005
    Adoxal 1.000 141-13-9 4 0.007
    Methyl Nonyl 1.000 110-41-8 3 0.030
    Acetaldehyde
    Melonal 1.000 106-72-9 3 0.670
    o-anisaldehyde 25.000 135-02-4 1 0.032
  • In another embodiment, the malodor control component includes a mixture of about 71.2% volatile aldehydes, the remainder being other an ester and an alcohol perfume raw material. This mixture is listed in Table 3 and referred to herein as Accord C.
  • TABLE 3
    Accord C
    ClogP VP (torr)
    Material Wt. % CAS Number Group @25° C.
    Intreleven Aldehyde 2.000 112-45-8 3 0.060
    Florhydral 10.000 125109-85-5 4 0.008
    Floral Super 5.000 71077-31-1 3 0.030
    Scentenal 2.000 86803-90-9 2 0.010
    Cymal 15.000 103-95-7 4 0.007
    Floralozone 12.000 67634-14-4 4 0.005
    Adoxal 1.000 141-13-9 4 0.007
    Methyl Nonyl 1.000 110-41-8 3 0.030
    Acetaldehyde
    Melonal 1.000 106-72-9 3 0.670
    Flor Acetate 11.800 5413-60-5 1 0.060
    Frutene 7.000 17511-60-3 4 0.020
    Helional 5.000 1205-17-0 2 0.0005
    Bourgeonal 2.000 18127-01-0 4 0.004
    Linalool 10.000 78-70-6 3 0.050
    Benzaldehyde 0.200 100-52-7 1 1.110
    o-anisaldehyde 15.000 135-02-4 1 0.320
  • Accords A, B, or C can be formulated in with other perfume raw materials in an amount, for example, of about 10% by weight of the malodor control component. Additionally, the individual volatile aldehydes or a various combination of the volatile aldehydes can be formulated into a malodor control component. In certain embodiments, the volatile aldehydes may be present in an amount up to 100%, by weight of the malodor control component, alternatively from 1% to about 100%, alternatively from about 2% to about 100%, alternatively from about 3% to about 100%, alternatively about 50% to about 100%, alternatively about 70% to about 100%, alternatively about 80% to about 100%, alternatively from about 1% to about 20%, alternatively from about 1% to about 10%, alternatively from about 1% to about 5%, alternatively from about 1% to about 3%, alternatively from about 2% to about 20%, alternatively from about 3% to about 20%, alternatively from about 4% to about 20%, alternatively from about 5% to about 20%, by weight of the composition.
  • In some embodiments where volatility is not important for neutralizing a malodor, the present invention may include poly-aldehydes, for example, di-, tri-, tetra-aldehydes. Such embodiments may include laundry detergents, additive, and the like for leave-on, through the wash, and rinse-off type of applications.
  • 2. Acid Catalyst
  • The malodor control component of the present invention may include an effective amount of an acid catalyst to neutralize sulfur-based malodors. It has been found that certain mild acids have an impact on aldehyde reactivity with thiols in the liquid and vapor phase. It has been found that the reaction between thiol and aldehyde is a catalytic reaction that follows the mechanism of hemiacetal and acetal formation path. When the present malodor control component contains an acid catalyst and contacts a sulfur-based malodor, the volatile aldehyde reacts with thiol. This reaction may form a thiol acetal compound, thus, neutralizing the sulfur-based odor. Without an acid catalyst, only hemi-thiol acetal is formed.
  • Suitable acid catalysts have a VP, as reported by Scifinder, in the range of about 0.001 torr to about 38 torr, measured at 25° C., alternatively about 0.001 torr to about 14 torr, alternatively from about 0.001 to about 1, alternatively from about 0.001 to about 0.020, alternatively about 0.005 to about 0.020, alternatively about 0.010 to about 0.020.
  • The acid catalyst may be a weak acid. A weak acid is characterized by an acid dissociation constant, Ka, which is an equilibrium constant for the dissociation of a weak acid; the pKa being equal to minus the decimal logarithm of Ka. The acid catalyst may have a pKa from about 4.0 to about 6.0, alternatively from about 4.3 and 5.7, alternatively from about 4.5 to about 5, alternatively from about 4.7 to about 4.9. Suitable acid catalyst include those listed in Table 4.
  • TABLE 4
    VP (torr) @
    Material 25° C.
    Formic Acid 36.5
    Acetic Acid 13.9
    Trimethyl Acetic Acid 0.907
    Phenol (alkaline in liquid apps yet 0.610
    acidic in vapor phase)
    Tiglic acid 0.152
    Caprylic acid 0.0222
    5-Methyl thiophene carboxylic acid 0.019
    Succinic acid 0.0165
    Benzoic acid 0.014
    Mesitylenic acid 0.00211
  • Depending on the desired use of the malodor control component, one may consider the scent character or the affect on the scent of the malodor control component when selecting an acid catalyst. In some embodiments of the malodor control component, it may be desirable to select an acid catalyst that provides a neutral to pleasant scent. Such acid catalysts may have a VP of about 0.001 torr to about 0.020 torr, measured at 25° C., alternatively about 0.005 torr to about 0.020 torr, alternatively about 0.010 torr to about 0.020 torr. Non-limiting examples of such acid catalyst include 5-methyl thiophene carboxaldehyde with carboxylic acid impurity, succinic acid, or benzoic acid.
  • The malodor control component may include about 0.05% to about 5%, alternatively about 0.1% to about 1.0%, alternatively about 0.1% to about 0.5%, alternatively about 0.1% to about 0.4%, alternatively about 0.4% to about 1.5%, alternatively about 0.4% of an acid catalyst by weight of the malodor control component.
  • In an acetic acid system, the present malodor control component may include about 0.4% of acetic acid (50:50 TC:DPM, 0.4% acetic acid).
  • TABLE 5
    % Butanethiol
    Actual % acetic reduction @
    Sample Formulated acid in DPM 30 min.
    50:50 TC:DPM 0% Acetic Acid 0.00 12.00
    50:50 TC:DPM 0.05% Acetic Acid 0.04 14.65
    50:50 TC:DPM 0.1% Acetic Acid 0.10 25.66
    50:50 TC:DPM 0.2% Acetic Acid 0.42 34.68
    50:50 TC:DPM 0.5% Acetic Acid 1.00 24.79
    50:50 TC:DPM 1.0% Acetic Acid 2.00 7.26
  • When an acid catalyst is present with a volatile aldehyde (or RA), the acid catalyst may increase the efficacy of the volatile aldehyde on malodors in comparison to the malodor efficacy of the volatile aldehyde on its own. For example, 1% volatile aldehyde and 1.5% benzoic acid provides malodor removal benefit equal to or better than 5% volatile aldehyde alone.
  • The malodor control component may have a pH from about 3 to about 8, alternatively from about 4 to about 7, alternatively from about, alternatively from about 4 to about 6.
  • 3. Optional Ingredients
  • The malodor control component may, optionally, include odor masking agents, odor blocking agents, and/or diluents. For example, the malodor control component may include a mixture of volatile aldehydes for neutralizing a malodor, perfume ionones, and a diluent. Alternatively, the malodor control component may include 100% volatile aldehydes.
  • “Odor-masking agents” refer to known compounds (e.g. perfume raw materials) that mask or hide a malodorous compound. Odor-masking may include a compound with a non-offensive or pleasant smell that is dosed such it limits the ability to sense a malodorous compound. Odor-masking may involve the selection of compounds which coordinate with an anticipated malodor to change the perception of the overall scent provided by the combination of odorous compounds.
  • “Odor blocking agents” refer to known compounds that dull the human sense of smell.
  • Exemplary diluents include dipropylene glycol methyl ether, and 3-methoxy-3-methyl-1-butanol, and mixtures thereof.
  • The malodor control component may also, optionally, include perfume raw materials that solely provide a hedonic benefit (i.e. that do not neutralize malodors yet provide a pleasant fragrance). Suitable perfumes are disclosed in U.S. Pat. No. 6,248,135, which is incorporated in its entirety by reference.
    • II. Method of Laundering a Fabric
  • The method of laundering fabric typically comprises the step of contacting the composition to water to form a wash liquor, and laundering fabric in said wash liquor, wherein typically the wash liquor has a temperature of above 0° C. to 90° C., or to 60° C., or to 40° C., or to 30° C., or to 20° C., or to 10° C., or even to 8° C. The fabric may be contacted to the water prior to, or after, or simultaneous with, contacting the laundry detergent composition with water. The composition can be used in pre-treatment applications.
  • Typically, the wash liquor is formed by contacting the laundry detergent to water in such an amount so that the concentration of laundry detergent composition in the wash liquor is from above 0 g/l to 5 g/l, or from 1 g/l, and to 4.5 g/l, or to 4.0 g/l, or to 3.5 g/l, or to 3.0 g/l, or to 2.5 g/l, or even to 2.0 g/l, or even to 1.5 g/l.
  • The method of laundering fabric may be carried out in a top-loading or front-loading automatic washing machine, or can be used in a hand-wash laundry application. In these applications, the wash liquor formed and concentration of laundry detergent composition in the wash liquor is that of the main wash cycle. Any input of water during any optional rinsing step(s) is not included when determining the volume of the wash liquor.
  • The wash liquor may comprise 40 litres or less of water, or 30 litres or less, or 20 litres or less, or 10 litres or less, or 8 litres or less, or even 6 litres or less of water. The wash liquor may comprise from above 0 to 15 litres, or from 2 litres, and to 12 litres, or even to 8 litres of water.
  • Typically from 0.01 kg to 2 kg of fabric per litre of wash liquor is dosed into said wash liquor. Typically from 0.01 kg, or from 0.05 kg, or from 0.07 kg, or from 0.10 kg, or from 0.15 kg, or from 0.20 kg, or from 0.25 kg fabric per litre of wash liquor is dosed into said wash liquor.
  • Optionally, 50 g or less, or 45 g or less, or 40 g or less, or 35 g or less, or 30 g or less, or 25 g or less, or 20 g or less, or even 15 g or less, or even 10 g or less of the composition is contacted to water to form the wash liquor.
  • The compositions herein may be packaged in any suitable container, such as bottles, alternatively plastic bottles, optionally equipped with an electrical or manual trigger spray-head.
    • EXAMPLES
  • The examples herein are meant to exemplify the present invention but are not necessarily used to limit or otherwise define the scope of the present invention. All numerical values in the below examples are weight %, by total weight of the composition unless otherwise stated.
  • Ingredient Amount (in wt %)
    Anionic detersive surfactant (such as alkyl benzene from 8 wt % to 15 wt %
    sulphonate, alkyl ethoxylated sulphate and mixtures thereof)
    Non-ionic detersive surfactant (such as alkyl ethoxylated from 0.5 wt % to 4 wt %
    alcohol)
    Cationic detersive surfactant (such as quaternary ammonium from 0 to 4 wt %
    compounds)
    Other detersive surfactant (such as zwiterionic detersive from 0 wt % to 4 wt %
    surfactants, amphoteric surfactants and mixtures thereof)
    Carboxylate polymer (such as co-polymers of maleic acid and from 1 wt % to 4 wt %
    acrylic acid)
    Polyethylene glycol polymer (such as a polyethylene glycol from 0.5 wt % to 4 wt %
    polymer comprising poly vinyl acetate side chains)
    Polyester soil release polymer (such as Repel-o-tex and/or from 0.1 to 2 wt %
    Texcare polymers)
    Cellulosic polymer (such as carboxymethyl cellulose, methyl from 0.5 wt % to 2 wt %
    cellulose and combinations thereof)
    Other polymer (such as amine polymers, dye transfer from 0 wt % to 4 wt %
    inhibitor polymers, hexamethylenediamine derivative
    polymers, and mixtures thereof)
    Zeolite builder and phosphate builder (such as zeolite 4A from 0 wt % to 4 wt %
    and/or sodium tripolyphosphate)
    Other builder (such as sodium citrate and/or citric acid) from 0 wt % to 3 wt %
    Carbonate salt (such as sodium carbonate and/or sodium from 15 wt % to 30 wt %
    bicarbonate)
    Silicate salt (such as sodium silicate) from 0 wt % to 10 wt %
    Filler (such as sodium sulphate and/or bio-fillers) from 10 wt % to 40 wt %
    Source of available oxygen (such as sodium percarbonate) from 10 wt % to 20 wt %
    Bleach activator (such as tetraacetylethylene diamine (TAED) from 2 wt % to 8 wt %
    and/or nonanoyloxybenzenesulphonate (NOBS)
    Bleach catalyst (such as oxaziridinium-based bleach catalyst from 0 wt % to 0.1 wt %
    and/or transition metal bleach catalyst)
    Other bleach (such as reducing bleach and/or pre-formed from 0 wt % to 10 wt %
    peracid)
    Chelant (such as ethylenediamine-N′N′-disuccinic acid from 0.2 wt % to 1 wt %
    (EDDS) and/or hydroxyethane diphosphonic acid (HEDP)
    Photobleach (such as zinc and/or aluminium sulphonated from 0 wt % to 0.1 wt %
    phthalocyanine)
    Hueing agent (such as direct violet 99, acid red 52, acid blue from 0 wt % to 1 wt %
    80, direct violet 9, solvent violet 13 and any combination
    thereof)
    Brightener (such as brightener 15 and/or brightener 49) from 0.1 wt % to 0.4 wt %
    Protease (such as Savinase, Savinase Ultra, Purafect, FN3, from 0.1 wt % to 0.4 wt %
    FN4 and any combination thereof)
    Amylase (such as Termamyl, Termamyl ultra, Natalase, from 0.05 wt % to 0.2 wt %
    Optisize, Stainzyme, Stainzyme Plus and any combination
    thereof)
    Cellulase (such as Carezyme and/or Celluclean) from 0.05 wt % to 0.2 wt %
    Lipase (such as Lipex, Lipolex, Lipoclean and any from 0.2 to 1 wt %
    combination thereof)
    Other enzyme (such as xyloglucanase, cutinase, pectate lyase, from 0 wt % to 2 wt %
    mannanase, bleaching enzyme)
    Fabric softener (such as montmorillonite clay and/or from 0 wt % to 4 wt %
    polydimethylsiloxane (PDMS)
    Flocculant (such as polyethylene oxide) from 0 wt % to 1 wt %
    Suds suppressor (such as silicone and/or fatty acid) from 0 wt % to 0.1 wt %
    Perfume (such as perfume microcapsule, spray-on perfume, from 0.1 wt % to 1 wt %
    starch encapsulated perfume accords, perfume loaded zeolite,
    and any combination thereof)
    Aesthetics (such as coloured soap rings and/or coloured from 0 wt % to 1 wt %
    speckles/noodles)
    Miscellaneous balance
  • Ingredient wt %
    Linear alkyl benzene sulphonic acid (HLAS) 11
    C1214 alkyl ethoxylated alcohol having an average degree of 2
    ethoxylation of 9 (AE9)
    C1214 alkyl ethoxylated sulphonic acid having an average 23
    degree of ethoxylation of 3 (HAES)
    C1617alkyl mid chain branched alkyl sulphate 4
    Amine oxide 1
    C1218 fatty acid 2
    Protease 2
    Natalase 0.9
    PE20 polymer 3
    Polyethylene imine polymer 3
    Chelant 1.4
    FWA 15 Brightener 0.4
    p-glycol 8
    DEG 0.5
    Ethanol 3
    Monoethanolamine 6
    Water 26
    NaOH 0.3
    Perfume 1
    Silicone suds suppressor 0.06
    Violet DD dye 0.01
    Other dyes 0.03
    Hydrogenated castor oil 0.1
    Mica 0.2
    Calcium formate 0.1
    Sodium formate 0.2
    Miscellaneous to 100
    • Analytical Test—Effect of Volatile Aldehydes on Amine-Based and Sulfur-Based Malodors
  • Malodor standards are prepared by pipeting 1 mL of butylamine (amine-based malodor) and butanethiol (sulfur-based malodor) into a 1.2 liter gas sampling bag. The bag is then filled to volume with nitrogen and allowed to sit for at least 12 hours to equilibrate.
  • A 1 μL sample of each volatile aldehyde listed in Table 6 and of each Accord (A, B, and C) listed in Tables 1 to 3 is pipeted into individual 10 mL silanized headspace vials. The vials are sealed and allowed to equilibrate for at least 12 hours. Repeat 4 times for each sample (2 for butylamine analysis and 2 for butanethiol analysis).
  • After the equilibration period, 1.5 mL of the target malodor standard is injected into each 10 mL vial. For thiol analysis, the vials containing a sample+malodor standard are held at room temperature for 30 minutes. Then, a 1 mL headspace syringe is then used to inject 250 μL of each sample/malodor into a GC/MS split/splitless inlet. For amine analysis, a 1 mL headspace syringe is used to inject 500 μL of each sample/malodor immediately into the GC/MS split/splitless inlet. A GC pillow is used for the amine analysis to shorten the run times.
  • Samples are then analyzed using a GC/MS with a DB-5, 20 m, 1 μm film thickness column with an MPS-2 autosampler equipment with static headspace function. Data is analyzed by ion extraction on each total ion current (56 for thiol and 30 for amine) and the area is used to calculate the percent reduction from the malodor standard for each sample.
  • Table 6 shows the effect of certain volatile aldehydes on neutralizing amine-based and sulfur based malodors at 40 seconds and 30 minutes, respectively.
  • TABLE 6
    At least 20% At least 20%
    butylamine butanethiol
    reduction at reduction at
    Perfume Raw Material (R—CHO) 40 secs.? 30 mins.?
    2,4,5 Trimethoxy Benzaldehyde No No
    2,4,6-Trimethoxy-benzylaldehyde No No
    2-ethoxy benzylaldehyde Yes Yes
    2-isopropyl-5-methyl-2-hexenal Yes Yes
    2-methyl-3-(2-furyl)-propenal No No
    3,4,5 Trimethoxy Benzaldehyde No No
    3,4-Trimethoxy-benzylaldehyde No No
    4-tertbutyl benzylaldehyde Yes No
    5-methyl furfural Yes Yes
    5-methyl-thiophene-carboxaldehyde No Yes
    Adoxal Yes No
    Amyl cinnamic aldehyde No No
    Benzylaldehyde Yes No
    Bourgenal No Yes
    Cinnamic aldehyde Yes Yes
    Citronelyl Oxyacetaldehyde No No
    Cymal Yes No
    Decyl aldehyde Yes No
    Floral Super Yes Yes
    Florhydral Yes Yes
    Floralozone No No
    Helional Yes No
    Hydroxycitronellal No No
    Lauric aldehyde Yes No
    Ligustral Yes No
    Lyral Yes No
    Melonal Yes No
    Methyl nonyl acetaldehyde No No
    o-anisaldehyde Yes Yes
    p-anisaldehyde Yes No
    Pino acetaldehyde Yes Yes
    P.T. Bucinal Yes No
    Thiophene Carboxaldehyde Yes No
    Trans-4-decenal Yes Yes
    Trans Trans 2,4-Nonadienal Yes No
    Undecyl aldehyde Yes No
  • Table 7 shows the percent reduction of butylamine and butaniethiol at 40 seconds and 30 minutes, respectively, for Accords A, B, and C.
  • TABLE 7
    % reduction of % reduction of
    butylamine at butanethiol at
    Accord 40 secs. 30 mins.
    Accord A 76.58 25.22
    Accord B 51.54 35.38
    Accord C 65.34 24.98
    • Analytical Test—Effect of Acid Catalysts on Sulfur-Based Malodors
  • The above analytical test is repeated using samples containing an acid catalyst to test their effect on sulfur-based malodors. Specifically, a 1 μL aliquot of each of the following controls and acid catalyst samples are pipeted into individual 10 mL silanized headspace vials in duplicate: thiophene carboxyaldehyde as a control; a 50/50 mixture of thiophene carboxaldehyde and each of the following acid catalysts at 0.04%, 0.10%, 0.43% in DPM, 1.02% in DPM, and 2.04% in DPM: phenol, mesitylenic acid, caprylic acid, succinic acid, pivalic acid, tiglic acid, and benzoic acid.
  • FIG. 1 demonstrates that low vapor pressure acid catalysts provide up to 3 times better reduction of sulfur-based malodors in comparison to the control.
    • Analytical Test—Effect of Volatile Aldehydes and Acid Catalyst on Amine-Based and Sulfur-Based Malodors
  • The above analytical test is repeated using sample formulations containing volatile aldehydes (or RA) and an acid catalyst, as outlined in Tables 8 and 9.
  • Tables 8 and 9 show that a perfume mixture having as little as 1% volatile aldehyde along with 1.5% acid catalyst performs better at reducing butylamine and butanethiol than the same perfume mixture having 5% volatile aldehyde.
  • TABLE 8
    % butylamine % butanethiol
    reduction at reduction at
    Formulation 40 secs. 30 mins.
    Perfume Mixture w/ 5% RA 34.21 — 2.40 —
    (Control)
    Perfume Mixture w/ 1% RA and 41.63 +7.42 11.95 +9.55
    w/ 1.5% Benzoic Acid
    Perfume Mixture w/ 3% RA and 36.19 +1.98 13.56 +11.16
    w/ 1.5% Benzoic Acid
    Perfume A Mixture w/ 5% RA and 41.26 +7.05 9.56 +5.02
    w/ 1.5% Benzoic Acid
  • TABLE 9
    % butylamine % butanethiol
    Reduction at reduction at
    Formulation 40 secs. 30 mins
    Perfume mixture w/ 5% RA 4.94 — 10.52 —
    (Control)
    Perfume mixture w/ 1% RA and 11.61 +6.67 18.82 +8.30
    w/ 1.5% Benzoic Acid
    Perfume mixture w/ 3% RA and 26.89 +21.95 14.85 +4.33
    w/ 1.5% Benzoic Acid
    Perfume mixture w/ 5% RA and 20.27 +15.33 16.84 +6.32
    w/ 1.5% Benzoic Acid
  • The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as “40 mm” is intended to mean “about 40 mm.”
  • Every document cited herein, including any cross referenced or related patent or application, is hereby incorporated herein by reference in its entirety unless expressly excluded or otherwise limited. The citation of any document is not an admission that it is prior art with respect to any invention disclosed or claimed herein or that it alone, or in any combination with any other reference or references, teaches, suggests, or discloses any such invention. Further, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall govern.
  • While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is, therefore, intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims (30)

1. A detergent laundry composition comprising:
(a) a detersive surfactant comprising anionic detersive surfactant and non-ionic surfactant, wherein the weight ratio of anionic detersive surfactant to non-ionic detersive surfactant is greater than 1:1; and optionally wherein the anionic detersive surfactant has a hydrophilic index (HIC) of from 8.0 to 9.1;
(b) surfactancy boosting polymer;
(c) from 0 wt % to 5 wt % fatty acid;
(d) silicone suds suppressor;
(e) structurant;
(f) enzymes; and
(g) non-boron enzyme stabilizer;
(h) a malodor control component comprising an effective amount of two or more volatile aldehydes for neutralizing a malodor, wherein said two or more volatile aldehydes are selected from the group consisting of 2-ethoxy benzylaldehyde, 2-isopropyl-5-methyl-2-hexenal, 5-methyl furfural, 5-methyl-thiophene-carboxaldehyde, adoxal, p-anisaldehyde, benzylaldehyde, bourgenal, cinnamic aldehyde, cymal, decyl aldehyde, floral super, florhydral, helional, lauric aldehyde, ligustral, lyral, melonal, o-anisaldehyde, pino acetaldehyde, P.T. bucinal, thiophene carboxaldehyde, trans-4-decenal, trans trans 2,4-nonadienal, undecyl aldehyde, and mixtures thereof;
wherein the electrolytic strength of the composition at a concentration of 1 g/l in de-ionized water and at a temperature of 25° C. in mScm−1 is less than 200 mScm−1.
2. The composition of claim 1 wherein said two or more volatile aldehydes are selected from the group consisting of 2-ethoxy benzylaldehyde, 2-isopropyl-5-methyl-2-hexenal, 5-methyl furfural, cinnamic aldehyde, floral super, florhydral, o-anisaldehyde, pino acetaldehyde, trans-4-decenal, and mixtures thereof.
3. The composition of claim 1 wherein said two or more volatile aldehydes comprise flor super and o-anisaldehyde.
4. The composition of claim 1 wherein said two or more volatile aldehydes have a VP from about 0.001 torr to about 0.100 torr.
5. The composition of claim 1 wherein said two or more volatile aldehydes comprise about 25% of quad I volatile aldehydes, by weight of said malodor control component.
6. The composition of claim 1 wherein said mixture of two or more volatile aldehydes comprise about 10% of quad II volatile aldehydes, by weight of said malodor control component.
7. The composition of claim 1 wherein said mixture of two or more volatile aldehydes comprise from about 10% to about 30% of quad III volatile aldehydes, by weight of said malodor control component.
8. The composition of claim 1 wherein said mixture of two or more volatile aldehydes comprise from about 35% to about 60% of quad IV volatile aldehydes, by weight of said malodor control component.
9. The composition of claim 1 wherein said two or more volatile aldehydes is selected from the group consisting of: Accord A, Accord B, Accord C, and mixtures thereof.
10. The composition of claim 1 wherein said two or more volatile aldehydes comprise about 1% to about 10% of Accord A, by weight of said malodor control component.
11. The composition of claim 1 wherein said composition has a pH of above about 2.
12. The composition of claim 1 wherein said two or more volatile aldehydes comprise three or more volatile aldehydes having a VP of about 0.001 torr to about 0.100 torr.
13. The composition of claim 1 wherein said two or more volatile aldehydes are present in an amount from about 0.015% to about 1%, by weight of said detergent laundry composition.
14. The composition of claim 1 wherein said malodor control component further comprises an acid catalyst having a vapor pressure of about 0.01 to about 13 at 25° C.
15. The composition of claim 1 wherein said composition further comprises uncomplexed cyclodextrin.
16. The composition of claim 1 wherein said composition further comprises a water-soluble metallic salt selected from the group consisting of: zinc salts, copper salts, and mixtures thereof.
17. A detergent laundry composition comprising:
(a) detersive surfactant comprising anionic detersive surfactant and non-ionic surfactant, wherein the weight ratio of anionic detersive surfactant to non-ionic detersive surfactant is greater than 1:1;
(b) surfactancy boosting polymer;
(c) from 0 wt % to 10 wt % fatty acid;
(d) silicone suds suppressor;
(e) structurant;
(f) enzyme; and
(g) nil-boron enzyme stabilizer;
(h) a malodor control component comprising:
(i) at least one volatile aldehyde; and
(ii) an acid catalyst having a vapor pressure of about 0.01 to about 13 at 25° C.;
wherein the electrolytic strength of the composition at a concentration of 1 g/l in de-ionized water and at a temperature of 25° C. in mScm−1 is less than 200 mScm−1.
18. The composition of claim 17 wherein said at least one volatile aldehyde has a VP of about 0.001 to about 50 torr.
19. The composition of claim 17 wherein said at least one volatile aldehyde has a VP of about 0.001 torr to about 15 torr.
20. The composition of claim 17 wherein said at least one volatile aldehyde is selected from the group consisting of 2-ethoxy benzylaldehyde, 2-isopropyl-5-methyl-2-hexenal, 5-methyl furfural, 5-methyl-thiophene-carboxaldehyde, adoxal, p-anisaldehyde, benzylaldehyde, bourgenal, cinnamic aldehyde, cymal, decyl aldehyde, floral super, florhydral, helional, lauric aldehyde, ligustral, lyral, melonal, o-anisaldehyde, pino acetaldehyde, P.T. bucinal, thiophene carboxaldehyde, trans-4-decenal, trans trans 2,4-nonadienal, undecyl aldehyde, and mixtures thereof.
21. The composition of claim 17 wherein said at least one volatile aldehyde is selected from the group consisting of flor super, o-anisaldehyde, and mixtures thereof.
22. The composition of claim 17 wherein said at least one volatile aldehyde is present in an amount from about 1% to about 10%, by weight of said malodor control component.
23. The composition of claim 17 wherein said at least one volatile aldehyde is present in an amount from about 0.015% to about 1%, by weight of said detergent laundry composition.
24. The composition of claim 17 wherein said at least one volatile aldehyde comprises a mixture of volatile aldehydes selected from the group consisting of Accord A, Accord B, Accord C, and mixtures thereof.
25. The composition of claim 17 wherein said at least one volatile aldehyde is present in an amount from about 1% to about 5%, by weight of said malodor control component, and said acid catalyst is present in an amount of about 0.4% to about 1.5%, by weight of said malodor control component.
26. The composition of claim 17 wherein said acid catalyst is present in an amount from about 0.1% to about 0.4%, by weight of said malodor control composition.
27. The composition of claim 17 wherein said acid catalyst has a vapor pressure of about 0.01 to about 2 torr at 25° C.
28. The composition of claim 17 wherein said acid catalyst is a carboxylic acid.
29. The composition of claim 17 wherein said acid catalyst is 5-methyl thiophene carboxylic acid.
30. A method of laundering a fabric, comprising the steps of:
(a) applying the detergent laundry composition according to claim 1 onto said fabric or said object;
(b) leaving said composition on said fabric to act; optionally wiping said fabric or object and/or providing mechanical agitation, and then rinsing said fabric.
US12/969,724 2009-12-17 2010-12-16 Laundry Detergent Composition Having A Malodor Control Component And Methods Of Laundering Fabrics Abandoned US20110146001A1 (en)

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