CN1874750B - Fragrance Delivery Systems for Surface Cleaners and Conditioners - Google Patents

Abstract

We claim a fragrance delivery system consisting of a mixture of various polymer oligomers and stabilizers capable of forming a surfactant complex gel dispersion when combined with a cleansing surfactant matrix And deposit very high levels of fragrance from cleansing or detangling consumer products containing micelle-forming surfactants onto the skin, hair or other surfaces such as fabrics. The internal or dispersible phase of the surfactant-complexed gel dispersion (GLPPD) is a mixture of immiscible polymers, oligomers and stabilizers that form a complex gel with the surfactant platform prepared, and their proportions and components are chosen to dissolve the widest possible range of fragrance raw materials. The selection criteria are, first, that the fragrance should enter the surfactant-complexed gel phase with a higher partition ratio than the free micelles of the surfactant, and second, that the fragrance-complexed gel should not be absorbed by the free micelles. Further to dissolution, thirdly, the selected polymer mixture should be complexed with the surfactant system. The external or dispersed phase of the GLPPD is made from a single cationic polymer or a mixture of cationic polymers that has been hydrated and associated with surfactants to form a complex gel structure that cannot be further dissolved by free micelles.

Description

Fragrance Delivery Systems for Surface Cleaners and Conditioners

technical field

The present invention relates to fragrance delivery and delivery systems formed from mixtures of water-miscible and water-immiscible polymers or oligomers capable of forming surfactant-complexed gel dispersions capable of delivering large quantities of Deposition of fragrances from cleaning consumer products comprising surfactant mixtures onto skin, hair or other surfaces such as tiles or fabrics. The surfactant-complexed gel is formed when a mixture of various polymers, oligomers and optional stabilizers associates with a surfactant cleaning system to form an associative surfactant-complex structure The internal and external phases of the dispersion, or dispersible and dispersed phases, where polymer to polymer, (polymer/oligomer/stabilizer mixture) to surfactant ratio, and composition are selected so that dissolution has a wide range of Range of solubility and volatility of fragrance raw materials.

Background technique

Enhanced fragrance deposition and long-term persistence are two benefits commonly sought when formulating body or hair washes, liquid soaps, cleansers and softeners intended for application to skin, hair, fabrics or other surfaces, of which All of these products contain cleansing or conditioning surfactants or surfactants. However, since most fragrances are dissolved in free surfactant micelles and are washed off by the cleansing or conditioning surfactant systems present in these types of consumer products, the amount of fragrance deposits on said surfaces, And its long-term durability is limited.

Fragrances are generally oily substances which, when added to a surfactant-containing composition, dissolve by partitioning into the surfactant micelles. This process limits the amount of fragrance deposited on surfaces treated with the composition, firstly, because the fragrance is greatly dissolved in the micelles, and, secondly, the small amount of fragrance deposited due to micellar disruption is regenerated. Dissolve back into the surfactant system.

Attempts to solve this problem have resulted in the use of cationic polymers alone or in combination with fragrance carriers in surfactant solutions. Deposition of fragrance to surfaces, especially the skin, by these systems is mainly achieved through the use of cationic surfactants or cationic polymers. Typical prior art in this field is represented by, for example, US patents 5,804,538, 5,843,875 and 5,891,833. Both of these documents describe the use of cationic polymers to assist in the deposition of enhanced fragrance from body washes onto the skin.

The fragrance carriers used in the prior art are usually formed by a separate cationic polymer that forms an ion pair with the surfactant, or a cationic polymer that is combined with an oily droplet that has dissolved a fragrance, or a hydrophobic polymer that has encapsulated a fragrance. It is composed of permanent solid wax or cationic polymer combined with polymer solid particles.

The major disadvantage of using cationic polymers that form ion pairs with surfactants is that the level of fragrance incorporated is very low, therefore these delivery systems do not show high levels of fragrance deposition on treated surfaces.

The disadvantages presented by the delivery system using cationic polymers associated with oily droplets are, firstly, that the oil itself is partially dissolved in the surfactant micelles, and secondly, when the cleaning composition reaches thermodynamic equilibrium, Fragrance gradually diffuses out of the oil droplets by partitioning into the micelles. Both of these methods significantly reduce the level of fragrance deposited onto the surface to which the product is applied. A typical example of such a solution is the aroma delivery system described in US Patent Application 2002/0055452.

Although hydrophobic wax and polymer solid particles are not solubilized by the surfactant micelles due to their solid nature, they still lose fragrance by partitioning into the micelles. Furthermore, since the solid particles do not break up during shearing, they are difficult to deposit on skin, hair and other surfaces, and in addition, they are easily washed off during washing.

US Patent 6,491,902 and European Patent Application 1 146 057 are relevant examples of prior art describing the use of solid polymer particles as fragrance carriers.

Encapsulation of fragrances in hollow spheres, nanospheres, liposomes, microspheres, etc. presents similar challenges. In most cases, the solid walls of these spheres are unstable at high surfactant concentrations and they are also permeable, allowing gradual partitioning of the fragrance into the surfactant micelles.

In summary, the main problems presented by these prior known techniques are: firstly, loss of fragrance to surfactants by distributing them, and secondly, when the hydrophobic carrier is triglyceride or mineral oil, It can be dissolved into the micelles, and third, when the carrier is a solid particle, or has a solid wall, it cannot be broken by shearing, which prevents fragrance deposition and also allows the fragrance to gradually diffuse into the micelles.

In more recent documents, eg US 2004/0087476 and 2004/0091445, the use of cationic polymer particles is described, preferably not well mixed with the fragrance prior to addition to the surfactant-containing end product. The cationic polymer in question must have an affinity for a particular perfume raw material with defined properties. In addition, the fragrance polymer systems described here must obey certain parameters that are not generally defined or commonly used in the field, but are limited only to the above-mentioned documents. In other words, as described in these examples, the described fragrance carrier or polymeric fragrance particle is very specific and is only associated with a specific cationic polymer and fragrance raw material. A disadvantage of this type of system is the danger that the skilled perfumer may limit his actions and choice of perfume materials to having to formulate carrier polymers primarily as usable rather than for his hedonic purposes.

Indeed, in the field of fragrances and more specifically in the field of fragrance delivery and deposition on substrates treated with fragranced, surfactant-containing consumer products, it is highly desirable to be able to handle fragrance delivery systems as versatile as possible, namely Said, can be easily adapted to the general characteristics of the final consumer product on which the surface or substrate is treated, without unduly restricting the materials that fragrances have to produce pleasant, original and effective fragrances to meet consumer preferences tone. The present invention solves exactly this problem and also eliminates other problems encountered in the referenced prior art.

We have now surprisingly been able to determine that a more general approach to solving the above-mentioned prior art problems is to provide cleansers and conditioners that take into account the composition of the final product substrate, especially skin, hair, fabric and other surfaces. The fragrance delivery system is the main ingredient (ie, surfactant or surfactant system) in the formulation.

The present invention thus provides a fragrance delivery and delivery system consisting essentially of a gel complex formed by the interaction of the fragrance carrier/deposition polymer combination with surfactant molecules contained in the final product. The scent carrier/deposition combination includes various types of water-miscible and water-immiscible polymers, oligomers, and optionally stabilizers which, when combined with the cleansing/conditioning surfactant platform, Able to form association complexes with surfactant molecules at any dilution.

We are now able to ascertain that the surfaces produced by the combination of carefully selected, optionally stabilized, mixtures of water-miscible and water-immiscible polymers and/or oligomers with, inter alia, cleansing surfactant systems The active agent complexes the gel structure, capable of forming a bulk gel which preferably dissolves the fragrance and allows its effective deposition on the surface being cleaned. The external dispersed phase of such gel-liquid polymer/polymer dispersion (hereinafter referred to as "GLPPD") (an object of the present invention) is made of a water-miscible cationic polymer, or a water-miscible Composed of a mixture of neutral cationic polymers, when combined with a detergent surfactant system, it can form an aqueous surfactant complex gel, while the internal dispersible phase of GLPPD is composed of one or more water-immiscible Liquid polymers or oligomers, and optionally stabilizers, which are also capable of forming complexes with cleansing surfactants. The GLPPD can be prepared in situ in the surfactant matrix or prepared separately and then added to the surfactant matrix. Fragrance, which may be any suitable component, may also be mixed with the GLPPD separately from the surfactant base, or added after formation of a complex gel in the surfactant base.

Contents of the invention

The present invention provides a delivery and delivery system for hydrophobic benefit agents (i.e. fragrances) comprising: a) a water-miscible cationic polymer or a mixture of cationic polymers capable of forming a complex gel with a surfactant system; b) one or more water-miscible liquid polymers or oligomers capable of complexing the surfactant system; and c) a hydrophobic benefit agent when the carrier and delivery system is combined with the When mixed, the surfactant systems described above are capable of forming a gel-liquid polymer/polymer dispersion (GLPPD), which provides a stable surfactant-polymer gel capable of dissolving hydrophobic agents and preventing their partitioning. into free surfactant micelles.

By "free surfactant micelles" it is meant here the groups of surfactant micelles normally present in surfactant-containing consumer product compositions (i.e. surface cleanser or conditioner consumer products) and consisting of free Surfactants (ie, surfactants that are not complexed by the carrier delivery system according to the invention when the carrier delivery system is incorporated in said consumer product) constitute.

The present invention thus relates to carrier/delivery systems for fragrance or additional hydrophobic benefit agents capable of forming surfactant complex gel structures, more preferably gel surfactant/polymer/polymer dispersion systems, It can be achieved by a) a dispersed phase formed from one or more water-miscible cationic polymers capable of complexing a cleansing surfactant system to form an aqueous gel; A dispersible phase is formed of complex-forming water-immiscible polymers and/or oligomers of the surfactant system, and optionally a stabilizer; and c) a mixture of hydrophobic benefit agents is obtained.

In the following specific embodiments of the invention, the hydrophobic benefit agent is a fragrance.

By "carrying and conveying" here is meant the carrying of fragrances by cleaning or surface treatment, and the transfer and deposition of hydrophobic agents contained in cleaning or treating consumer products applied to said surfaces, i.e. fragrances, onto said surfaces combination of behaviors.

10的混合物，商品名为Polymer JR-400，Polymer JR-30M，Polymers LR-400和LR-30M；由Ciba以商品名

SC-95和SC-96销售的异丁烯酸三甲基氨基乙酯氯化物聚合物；由BASF销售的商品名为

PS的聚乙烯亚胺PS；由Cytec提供的商品名为C-583的阳离子聚胺；由BASF销售的商品名为9096的聚乙烯胺；由Cytec销售的商品名为C-498的阳离子聚丙烯酰胺；以及以各种商品名销售的聚二甲基二烯丙基氯化铵或者PolyDADMAC。The dispersed polymer phase according to the present invention is a water-miscible cationic polymer or a mixture of cationic polymers capable of complexing cleansing surfactants to form gels. Preferred such polymers include those sold by Ciba under the tradename SC-60 polymer, acrylamidopropyltrimethylammonium chloride acrylamide copolymer, or its combination with Amerchol's

A mixture of 10, trade names Polymer JR-400, Polymer JR-30M, Polymers LR-400 and LR-30M; by Ciba under the trade name

SC-95 and Trimethylaminoethyl methacrylate chloride polymer sold as SC-96; sold by BASF under the trade name

Polyethyleneimine PS of PS; available from Cytec under the tradename Cationic polyamine of C-583; sold by BASF under the trade name Polyvinylamine 9096; sold by Cytec under the trade name Cationic polyacrylamide of C-498; and polydimethyldiallylammonium chloride or PolyDADMAC sold under various trade names.

The liquid dispersible phase is formed from one or more water-immiscible liquid polymers or oligomers, and optionally a stabilizer.

的异佛乐酮二异氰酸酯共聚物衍生物(参见本文中的表格)；聚异丁烯/聚丁烯衍生物(参见本文中的表格)；以及由ExxonMobil Chemical Co销售的商品名为2，4，6，8，10，40，100，150，300，1000，3000的氢化聚癸烯和氢化的C6-C14烯烃聚合物。Water-immiscible polymers or oligomers suitable for the present invention include those sold by Alzo under the trade name and

isophorone diisocyanate copolymer derivatives (see table herein); polyisobutylene/polybutene derivatives (see table here); and sold by ExxonMobil Chemical Co under the trade name 2, 4, 6, 8, 10, 40, 100, 150, 300, 1000, 3000 hydrogenated polydecene and hydrogenated C6-C14 olefin polymers.

Stabilizers suitable according to the present invention include those sold by Elementis and Sud Chemie respectively under the trade names R or polysorbate 20 sold under various trade names, and sorbitan isostearate sold under the trade name Crill-6 by Croda.

The present invention also relates to a method for producing the carrier and delivery system comprising: a) combining a water-immiscible dispersible polymer or polymers or oligomers and optionally a stabilizer with a hydrophobic The ingredients, i.e. the fragrance are mixed to obtain a dispersible phase (Part A); b) hydrate the dispersed cationic polymer or mixture of cationic polymers in an aqueous medium to obtain a hydrophilic polymer solution (Part B); c) to Mixing Part A and Part B in suitable relative proportions to form a polymer dispersion (Part C), and d) incorporating Part C into a surfactant system to obtain a surfactant/polymer/scented gel according to the invention Complex delivery system.

Another object of the invention is a consumer product comprising a surfactant/polymer/scented gel according to the invention. Such consumer products include body washes and shampoos, liquid soaps and detergents for cleaning surfaces such as dishwashing and heavy duty liquids, hard surface cleaners, fabric and tile detergents, and fabric softeners.

As indicated above, an object of the present invention is the delivery and delivery system for hydrophobic benefit agents, particularly fragrances, when various water-miscible and water-immiscible polymers , a gel surfactant complex formed when oligomers and stabilizers combine with surfactant molecules in a cleaning composition. The surfactant complexing gel is preferably capable of dissolving the fragrance and by mixing: a) a dispersed phase which is a cationic capable of forming a complex/surfactant gel phase when mixed with cleansing surfactant and water a mixture of polymers or cationic polymers; b) a dispersible phase, a mixture of water-immiscible polymers, oligomers and optionally stabilizers which also have the ability to form complexes with cleansing surfactants and c) obtained from hydrophobic benefit agents.

The gel-liquid polymer/polymer dispersion (GLPPD) of the present invention is characterized by: A) polymers, oligomers and stabilizers, alone or in combination, in the internal dispersible phase of the GLPPD The chemical composition and mixing ratio are selected in such a way as to ensure that the solubility of the fragrance in the formed surfactant-complexed gel is higher than its solubility in the remaining free surfactant micelles, which Bundles are the surfactant micelles that are not bound by the complexes and are present in the final consumer product expected to use the flavor delivery system of the present invention; in this way, even in the surfactant complexed gel After the thermodynamic equilibrium is established between the droplets and the free surfactant micelles that are not bound to the complex, the surfactant-complexed gel droplets will also maintain a high fragrance content; B) Selectively form GLPPD The molecular weight, chemical composition and concentration of the internal phase of the liquid dispersible polymer, oligomer and stabilizer such that the surfactant-complexed gel droplet polymer/oligomer chain mixture cannot dissolve In the free micelles of the final product surfactant bound by the polymer; this prevents the fragrance-containing surfactant complex gel from being dissolved, diluted and washed out by the free micelles; C) Select between 500-20,000cps The final viscosity of the liquid surfactant-complexing gel droplets mixed with the fragrance, so that said surfactant-complexing gel forms a hardened gel in the final product surfactant solution; this viscosity range also allows the surface Active agent-complexing gel droplets are easily deformed under shear during application or foaming; in body care products, this is beneficial to allow the product to be evenly distributed on the keratin surface of the skin; D) Selective formation The dispersing polymer of the outer phase of the gel is a cationic polymer capable of complexing high levels of cleansing surfactants in the final product from 1% to 30% by weight or preferably from 3% to 25% of the total surfactant amount or mixtures of cationic polymers. This dispersion complex, when combined with the internal dispersibility described above, will produce a highly cationic and hydrophobic surfactant complex gel with high affinity for the application surface, especially when obtained from The colloidal phase formed during consumption of the end product, more specifically, when transferred from the foam of a shampoo or body wash to the surface; such that the cationic polymer or mixture of cationic polymers should be chosen such that Having a cationic substitution degree in the range of 3-30meq/g, more preferably 5-25meq/g, and a molecular weight higher than 400K; and E) a fragrance-containing surfactant-complexed gel uniformly dispersed in the components of the final product , and form gel droplets or particles with a diameter of 0.01-10 microns. These particles can be stabilized with the stabilizers described above so as to remain stable and resistant to suds shear and dilution processes during the wash.

Following these features of the present invention, those skilled in the art will be able, without undue effort, to select suitable cationic gel-forming dispersion polymers and Dispersible polymers, oligomers and stabilizers. In the presence of an aqueous surfactant solution, the surfactant-complexed gel dispersions of the present invention carrying beneficial hydrophobic ingredients, such as fragrance, should break up into small droplets/particles during application, which can Holds and transfers fragrance from the lamellar phase of the foam or from any other colloidal phase formed during product application to the surface being washed in a more efficient manner than fragrance delivery systems known in the art superior. Delivery of fragrance to application surfaces such as skin, hair, fabrics, glass windows or ceramic tiles will be more effective using a delivery system as described in the examples below.

10(季铵化羟乙基纤维素)；来源：Amerchol Corporation；

Polymer JR-125；JR-400；JR-30M；LR-400；LR-30M；来源：Amerchol Corporation；

-7(二烯丙基二甲基氯化铵与丙烯酰胺的共聚物)；550，来源：NalcoCompany；SC 10；来源：Ciba Speciality Chemicals；季铵化瓜耳胶；C-13S；来源：Rhodia，Meyhall Chemicals Ltd；C-16S；来源：Rhodia，Meyhall Chemicals Ltd；Excel 2000；来源：Rhodia；丙烯酰胺丙基三甲基氯化铵(和)丙烯酰胺的共聚物，

SC-60；来源：Ciba Speciality Chemicals；聚异丁烯酰胺丙基氯化三铵，133；来源：Rhodia；聚乙烯亚胺，PS；来源：BASF；咪唑共聚物，

MS 370；来源：BASF；阳离子聚胺，C-583；来源：Cytec；阳离子聚丙烯酰胺，C-498；来源：Cytec；异丁烯酸三甲基氨基乙酯氯化物，

SC-95和

SC-96；来源：Allied Colloids，Ciba，聚乙烯胺，9096；来源：BASF，和以各种商品名存在的聚二甲基二烯丙基氯化铵，Poly DADMAC。The cationic polymer or polymer mixture used as the dispersed phase of GLPPD is suitably selected from:

10 (quaternized hydroxyethyl cellulose); Source: Amerchol Corporation;

Polymer JR-125; JR-400; JR-30M; LR-400; LR-30M; Source: Amerchol Corporation;

-7 (copolymer of diallyldimethylammonium chloride and acrylamide); 550, source: Nalco Company; SC 10; Source: Ciba Specialty Chemicals; Quaternized Guar Gum; C-13S; Source: Rhodia, Meyhall Chemicals Ltd; C-16S; Source: Rhodia, Meyhall Chemicals Ltd; Excel 2000; Source: Rhodia; Copolymer of Acrylamidopropyltrimethylammonium Chloride (and) Acrylamide,

SC-60; Source: Ciba Specialty Chemicals; Polymethacrylamidopropyl Triammonium Chloride, 133; Source: Rhodia; Polyethyleneimine, PS; Source: BASF; Imidazole Copolymer,

MS 370; Source: BASF; Cationic polyamines, C-583; Source: Cytec; Cationic polyacrylamide, C-498; Source: Cytec; Trimethylaminoethyl methacrylate chloride,

SC-95 and

SC-96; Source: Allied Colloids, Ciba, Polyvinylamine, 9096; Source: BASF, and Polydimethyldiallyl Ammonium Chloride, Poly DADMAC, which exists under various trade names.

According to the present invention, two main types of chemical constituents can be used alone or in combination as main constituents of the liquid internal dispersible phase of GLPPD. One type is selected from a wide range of water-miscible polymers and oligomers, while the other type, optionally, includes various types of emulsion stabilizers. Said water-immiscible polymers and oligomers may be derivatives of polyurethane or isophorone diisocyanate; hydrogenated polyisobutylene/polybutene copolymers; polydecene and hydrogenated polydecene; And hydrogenated C6-C14 olefin polymers. Mixtures of the above materials may also be used.

Polymers/copolymers of polyurethanes are derived from isophorone diisocyanate, a monomer containing various functional groups with different polarizability and hydrophobic character. These polyurethane polymers are liquid or solid and are capable of dissolving a wide range of fragrance materials.

Polymers/copolymers derived from hydrogenated polyisobutylene/polybutene, on the other hand, are derived from the hydrophobic monomers isobutylene/butene, while polydecene polymers are linear alpha polymers derived from ethylene oligomerization. olefin synthesis. These polymers are non-polar viscous liquids and can be used alone or in combination with isophorone diisocyanate polymer derivatives to enhance fragrance solubility. Preferably, a mixture of the two types of polymers will be used.

Suitable stabilizers include trihydroxystearin and sorbitan isostearate.

The following table describes the water-immiscible polymers, oligomers and stabilizers: These include polyurethane derivatives, hydrogenated polyisobutylene/polybutene derivatives, hydrogenated polydecene derivatives, trihydroxystearin , polysorbate 20 and sorbitan isostearate, all of which are suitable for forming the dispersible phase of the delivery system of the present invention.

As the hydrophobic benefit ingredient carried and deposited via GLPPD, fragrance is preferably used herein. The latter are perfuming ingredients or mixtures of ingredients, the choice of fragrance being dictated by the desired hedonic effect and the type of product to which the fragrance is to be incorporated. Generally, these are mixtures of chemical components capable of imparting odors to substrates or surfaces such as skin, hair, fabrics, various surfaces such as dishes, tiles, windows, carpets, etc., and they are determined by perfumers according to the field of perfumery created by rules.

In general, by perfuming composition or scent we mean here a composition comprising at least one perfuming ingredient and optionally one or more solvents or adjuvants commonly used in the fragrance industry. It should be understood that the perfuming ingredient is present in a perfuming effective amount.

"Perfuming ingredients" here means compounds commonly used in the perfumery industry, ie compounds used as active ingredients in perfuming preparations or compositions in order to impart hedonic effects. In other words, such ingredients must be recognized by those skilled in the art as capable of imparting or modifying the odor of the composition in a desired manner, rather than merely having an odor.

The nature and type of the above-mentioned perfuming common ingredients do not warrant a more detailed description here, and in any case such description is not exhaustive, and those skilled in the art can base on general common sense and according to the perfuming The nature of the product and the olfactory effect desired to be obtained select them. Broadly speaking, these perfuming common ingredients belong to alcohols, aldehydes, ketones, esters, ethers, acetates, nitriles, terpene hydrocarbons, nitrogen-containing or sulfur-containing heterocyclic compounds and various types of essential oils. Such chemical classes, and said perfuming co-ingredients may be of natural or synthetic origin. In any event, most of these ingredients are listed in reference textbooks such as S. Arctander's book, Perfume and Flavor Chemicals, 1969, Montclair, New Jersey, USA, or updated editions thereof, or in other publications of a similar nature. in writings, and in the extensive patent literature in the field of fragrances. As perfuming ingredients it is also possible to use compounds known to release fragrance compounds in a controlled manner.

(来源：Exxon Chemical)已知的那些或者二醇醚和二醇醚酯例如以商标

(来源：Dow Chemical Company)已知的那些。Similarly, a detailed description of the nature and type of solvents commonly used in the fragrance industry cannot be exhaustive. Those skilled in the art will be able to choose them according to the nature of the product to be perfumed. However, as non-limiting examples of such solvents, ethanol, water/ethanol mixtures, limonene or other terpenes, isoparaffins such as under the trademark

(Source: Exxon Chemical) known as those or glycol ethers and glycol ether esters such as under the trademark

(Source: Dow Chemical Company) Those known.

According to the present invention, one of the main purposes of the described delivery system is to increase the immediacy and long-term persistence of the fragrance on the surface on which the fragrance is applied, so its composition will be adapted to this purpose, and perfume producers who know this principle adjust their preferences for fragrances. The ingredients are chosen to achieve the hedonic and technical demands of immediacy. The principles for achieving the latter have been extensively described in the prior art, a relevant example of which is the article "AQuantitative Study of Factors that Influence the Substantivity of Fragrance Chemicals on Laundered and Dried Fabrics" by Escher et al., JOACS, vol. .71, no.1 (1994) and the article "What makes a fragrance substantial" by Muller et al., Perfumer and Flavorist, 1845-1849 (1993). Such a well-established principle has been repeated many times in the more recent literature, ie the patent literature, and according to the present invention even a non-specialist will be able to find many examples of perfuming ingredients suitable for use. Referring to an example in this text, this principle is again discussed in detail, for example on pages 1 and 2 of the aforementioned US2002/0055452, which also cites relevant earlier patent documents in this field. Other earlier prior art documents mentioned in this article also cite a number of perfuming ingredients suitable for use in the present invention. Notwithstanding such citations, it should be noted here that none of the citations is considered to be a limitation on the quantity and nature of the perfuming ingredients suitable for use in the delivery system of the present invention, particularly because, as previously mentioned, Most of the known fragrance delivery systems described in these documents are adapted to deliver specific, relatively limited fragrance compositions.

It should be clear that the delivery system of the present invention can be applied to any fragrance, and that those skilled in the art will be able to arrive at the optimum polymer/surfactant mixture capable of carrying and depositing the fragrance without undue effort, by trial and error. Only the requirements specified by the fragrance manufacturer based on the desired odor effect and the properties of the final product (stability of the fragrance in the matrix, color and smell, properties of other ingredients in it, immediacy character, freshness, or manufactured from the final product) other hedonic parameters required by the supplier). The nature of the fragrance is therefore not an essential feature or parameter of the invention.

As previously cited, the delivery systems described above are prepared by a process comprising: a) combining a liquid dispersible polymer or polymers, oligomers and optionally stabilizers with beneficial hydrophobicity The components, i.e. the aroma, are mixed to obtain a dispersible phase; b) the cationic polymer or mixture of cationic polymers is hydrated in an aqueous medium to obtain a hydrophilic polymer solution forming the dispersed phase; the dispersible and dispersed phases are first mixed to obtain A premix is formed which is then mixed with the surfactant matrix in appropriate relative proportions to obtain the surfactant complexed gel, the delivery system of the present invention.

Said premix is also an object of the present invention.

According to one embodiment of the method, the liquid polymer dispersible phase is obtained by mixing selected water-miscible or water-immiscible polymers (when polymer mixtures are desired), as the case may be, or Prepared by mixing polymers/oligomers in proportions suitable to optimize the preferred solubility of the fragrance in the phase, and following the desired characteristics of the phase as previously disclosed. Once the liquid dispersible polymer mixture is optimized, it is mixed with the fragrance in a polymer/fragrance weight ratio between 0.01:1 and 10:1.

The dispersed phase is then prepared by hydrating the cationic polymer or polymer mixture in water, in a ratio of cationic polymer to water of 1:40 to 1:80, to form a cationic solution.

According to the present invention, the final step of preparing GLPPD comprises premixing the cationic polymer solution and the dispersible phase in a weight ratio of 0.1:10 to 10:1 under agitation, and then mixing the cationic polymer with the water-miscible fragrance/ A polymer or fragrance/oligomer premix is combined with a cleansing surfactant in a weight ratio of 0.01/100 to 5/100 until a surfactant-complexed gel dispersion with a particle size of 0.1-10 microns is obtained . Optional emulsifying surfactants or stabilizers can be added to the dispersible phase or later as a final step in the cleansing formulation. Such emulsifiers or stabilizers can be Tween ^TM 20 (source: ICI/UNIQEMA), Crill 6 (source: CRODA), ThixcinR (source: ELEMENTIS), and are added to improve fragrance solubility and to further stabilize the surface Active Agent Complex Gel Dispersion.

Thus, a mixture of a water-miscible cationic polymer and a water-immiscible polymer or oligomer, optionally together with a stabilizer, once added to those surfactant-containing end products cited above , to form a surfactant complex gel. The ratio of water-miscible cationic polymer and water-immiscible polymer or oligomer added to the final product can vary within wide ranges, for example in a weight ratio of 0.1:10 to 10:1 change. In practice, the concentration of the GLPPD premix added is chosen to provide a typical fragrance concentration of 0.001-10% by weight of the total weight of the final product in the final product. More typically, the fragrance content will be in the range of 0.4 or 0.5 to 1 or 2% by weight of the final product.

Alternatively, the GLPPD of the present invention can be directly added to the final product matrix by adding the above-described compound to the final product matrix at a concentration suitable for reaching the cationic polymer gel in an amount of 0.01-5% by weight of the surfactant matrix under vigorous stirring. A hydrated cationic polymer gel phase prepared directly in situ in a surfactant-containing final product matrix. The final product is then added to the final product comprising water-immiscible polymers, oligomers, and any The selected stabilizer, and the dispersible phase of the fragrance.

The fragrance delivery system of the present invention can be used in a number of end products that typically contain micelle-forming surfactants to obtain better and more efficient fragrance deposition on surfaces treated with such products. The invention also relates to compositions for topical application to the skin and hair, or to applications such as fabrics, windows, dishes, tiles, plastic covers, etc., comprising micelle-forming surfactants and hydrophobic benefit agents, especially fragranced Clean or dispose of the product. Specific examples of these end products include body washes and gels, shampoos and conditioners, liquid soaps and detergents, fabric softeners and heavy duty cleaners.

The composition and properties of the final product are immaterial for the purposes of the present invention, as long as the latter comprise surfactants capable of forming micelles and capable of entering said micellar fragrance, the latter delivery system is suitable for any such product.

The prior art cited above in this specification provides many examples of such end products and types of ingredients, which may optionally be contained, in addition to surfactant systems and fragrances. Specific reference is made here to such products, for example the broad descriptions found in US 5,804,538 or US 5,843,875, the contents of which are hereby incorporated by reference as they relate to the components of the personal cleansing products described there. According to the present invention, relevant descriptions of general optional components that can easily modify the final product by adding the fragrance delivery system described above can be found, for example, in the international application WO 99/43777, since the content of this application is related to the fabric softening of the final product. Generic ingredients are related and are therefore also included here by reference.

Needless to say, many other end product formulations, including micelle-forming surfactants and fragrances, are included in the presently required end product. Surfactants capable of complexing the GLPPD of the present invention include any surfactant capable of forming micelles, and may be anionic, nonionic, amphoteric, or cationic. Surfactants such as alone or in combination with cocoaminopropyl betaine, cocoaminopropyl betaine, or cocoamphoacetate disodium, alkylbenzenesulfonates and ethoxylated lauryl alcohols with 3-20 molar ethoxy groups Ammonium lauryl sulfate, ammonium lauryl ether sulfate with 1, 2 or 3 molar ethoxy groups, sodium lauryl sulfate, sodium lauryl ether sulfate with 1, 2 or 3 molar ethoxy groups are particularly contemplated for use in the present invention Surfactants, and products containing such surfactants advantageously improve their ability to deposit fragrances onto surfaces treated with them. The performance of such products in relation to the efficiency of delivering the fragrance to the surface treated therewith and the persistence of the fragrance on said surface can be greatly improved by using the delivery system according to the invention. The only selection criteria were, first, that the fragrance should exhibit a higher proportion of fragrance entry concentration than distribution to the free surfactant micelles not bound to the complex. In the gum; secondly, the surfactant complex formed by the mixture of the cationic polymer used according to the invention and the water-miscible liquid polymer or oligomer, and the optional stabilizer is not unbound Dissolved into free micelles of surfactant-complexed gels.

Thus, in the fragrance industry, a major advantage of the present invention is that the delivery system of the present invention imparts an intense fragrance to the treated surface, within the same period of time if a prior art fragrance delivery system is applied. will not be noticed.

Such efficacy makes the delivery system of the present invention particularly suitable as a precursor of a perfuming ingredient for applications related to functionalized or refined fragrances. It is therefore another object of the invention to use the delivery system of the invention as a perfuming ingredient. In other words, a method for imparting, enhancing, improving or improving the odor properties of a perfuming ingredient or a perfuming article is the object of the present invention, which method comprises adding to said ingredient or preparation an effective amount of the present invention any form of delivery system.

For the sake of clarity, it has to be mentioned that by "consumer product substrate" or "final product" we mean here a consumer product, ie a consumable product such as soap, detergent or perfume. In other words, a perfuming article according to the invention essentially comprises a functional formulation with a specific action (cleansing or treatment in any way), and optional additional benefit agents corresponding to a specific consumer product, and any form of the present invention. An effective amount of odor in the delivery system.

Therefore, a more detailed description of the nature and type of elements of the consumer product matrix is not given here, and the description is not exhaustive in any case, and the skilled person can base on common sense and the performance of the product and the perfuming effect of the product that one wishes to achieve. to select them.

The novel principle of the present invention lies in the use alone or preferably mixtures of polymers, oligomers and stabilizers capable of forming association complex structures with cleansing or conditioning surfactant systems, thereby forming beneficial Agents, that is, surfactant-complexed gel dispersions that deliver fragrance to surfaces or substrates. The dispersible fragrance carrier is a polymer or oligomer derived from isophorone diisocyanate, preferably an adhesive polymer or oligomer composed of polyurethane or diisocyanate derivatives, derived from hydrogenated polyisobutylene/polybutene Derivatives, or polymers or oligomers derived from hydrogenated polydecene, mixtures with trihydroxystearin, sorbitan isostearate or polysorbate 20 at a viscosity of 100-20,000 cps. The dispersed/sedimented phase is a mixture of high molecular weight cationic polymers capable of dispersing or dissolving in water with a high degree of cationic substitution in When in a product, its composition is compatible with that of the dispersible polymer mixture to minimize the solubility of the latter in free micelles of the surfactant not bound to the surfactant complex. Unlike the fragrance delivery systems known in the prior art, the fragrance carrier/delivery system of the present invention, once complexed with the surfactant system, achieves After thermodynamic equilibrium, the entry and retention of fragrance in the surfactant/polymer GLPPD is facilitated and is also more stable at high surfactant concentrations, where the abbreviations have their usual meanings in the art.

Hereinafter, the present invention will be described in more detail through the examples described below.

Description of drawings

Figure 1 shows the calculated percentages of fragrance found in micellar solution and dispersed particles in body wash composition A according to example 1 of the present invention.

Figure 2 shows the percentage of fragrance found in the surfactant micellar solution in body wash composition B for comparison according to comparative example 2.

Figure 3 shows the results of a comparative analysis of the aroma deposition obtained with the delivery system of the prior art and that obtained by GLPPD as described in Example 3 according to the present invention.

Figure 4 shows the results of a comparative analysis of the aroma deposition obtained with the control delivery system of the prior art and the aroma deposition obtained by GLPPD as described in Example 4 according to the present invention.

Figure 5 shows the results of a comparative analysis of the aroma deposition obtained with a prior art control delivery system and the aroma deposition obtained by GLPPD as described in Example 5 according to the present invention.

Detailed ways

Example 1

Preparation of body wash compositions according to the invention

Two body wash compositions were prepared as described below by mixing the following ingredients in the proportions indicated:

1) Fragrance #1: 1.0 g of fragrance composition containing the following raw materials: Limonene (15.5%); Benzyl Acetate (6.25%); Cyclohexyl Acetate (2.5%); Cyclohexanol, 2-(1, 1-Dimethylethyl)-, acetate (6.25%); 2-methylundecanal (2.75%); 4-(1,1-dimethylethyl)-α-methylphenylpropanal , (18.75%); cyclopentaneacetic acid, 3-oxo-2-pentyl-, methyl ester (29.25%); hexyl salicylate (18.75%).

2) Polymer for internal dispersible phase (fragrance carrier component): 1.0 g isomyristyl alcohol dimer/IPDI (Monoderm MPI-1-14) or 1.0 g hydrogenated castor oil/IPDI copolymer

3) Polymer for the outer dispersed phase (fragrance deposition/delivery component): 0.5 g acrylamidopropyltrimonium chloride (and) acrylamide copolymer (Salcare SC-60)

4) The first surfactant 1: 15.0g 2-Laureth-2Sulfate (Sodium Laureth-2Sulfate)

5) Second surfactant: 3.0 g cocoaaminopropyl betaine

6) The third surfactant: 2.0g ethylene glycol distearate

7) Water: 75.4g water

8) Preservative: 0.1g DMDM hydantoin

Part A: Using a simple mixer system, the fragrance is mixed with the liquid dispersible carrier (the cited first or second polymer, respectively) known as the fragrance-carrying ingredient (inner phase). The mixing formed a viscous clear liquid with a viscosity of 6000 cps. Part B: Hydrate the cationic dispersing polymer, referred to as the fragrance deposition/delivery ingredient, by gradually mixing 0.5 g of polymer in 20 g of water until a clear solution is obtained. Part C: Mix the first, second, and third surfactants and heat to 70°C. Add remaining water if needed. Mix Part A with the same amount of Part B and stir the mixture thoroughly until a premixed dispersion is formed. This premix was then added to Part C at 40°C to form the target surfactant/polymer gel complex of the invention, or GLPPD, while cooling and stirring thoroughly until room temperature was reached. In this way two body wash products according to the invention are obtained.

Comparative example 1

Comparative body wash compositions prepared according to the prior art

A comparative body wash composition was prepared as described below by mixing the following ingredients in the proportions indicated:

1) fragrance: the fragrance described in 1.0g embodiment 1

2) Fragrance carrier component: Fatty ester oil: 3.0g myristyl myristate

3) Fragrance Delivery Ingredients: 0.5g Acrylamidopropyltrimonium Chloride (and) Acrylamide Copolymer (Salcare SC-60)

4) The first surfactant 1: 15.0g 2-Laureth-2Sulfate (Sodium Laureth-2Sulfate)

5) Second surfactant: 3.0 g cocoaaminopropyl betaine

6) The third surfactant: 2.0g ethylene glycol distearate

7) Water: 75.4g water

8) Preservative: 0.1g DMDM hydantoin

Part A: Using a simple mixer system, the fragrance is mixed with the fragrance carrier (inner phase). Part B: Hydrate the cationic dispersion polymer, known as the flavor delivery ingredient, by gradually mixing 0.5 g of polymer in 20 g of water until a gel is obtained. Part C: Mix the first, second, and third surfactants and heat to 70°C. Add remaining water if needed.

Mix Part A with Part B and stir the mixture thoroughly until a gel/emulsion is obtained. This mixture was then added to Part C at 40°C while cooling and stirring thoroughly until room temperature was reached. A comparative body wash product is thus obtained.

Example 2

Application of the body wash described in Example 1 and Comparative Example 1, and from Measurement of aroma release from treated surfaces

The fragrance deposition analysis of the body wash (Composition A) previously described in Example 1 was performed on wool samples. The wool sample was 2 ^1/2 wide _by 4 inches long (1 gram) and washed with 0.5 g of the body wash formula discussed. The wool swatches were soaked in 500ml of water and the wash formula was applied to their surface before washing. The detergent is then tapped, rubbed and lathered on the wool swatch for about 30 seconds, after which the latter is rinsed with 30°C tap water. Aroma analysis was performed on wool samples by the SPME (Solid Phase Microextraction) method.

After various time periods following the washing process, wool samples prepared for SPME analysis were filled into vials. In the headspace of the vial, SPME analysis was carried out by triple analysis on the scent left on the wool after various time periods.

The wool swatches were washed in the same manner using the comparative body wash formulation (composition B) obtained in the comparative example, containing the fatty ester myristyl myristate as an oily fragrance carrier.

The effect of the type of fragrance carrier on fragrance distribution following thermodynamic equilibrium in body wash compositions was evaluated using the following procedure. Body wash composition A according to the invention and comparative body wash composition B were aged at 45°C for 15 days.

After this period of time, the two formulations were centrifuged and the dispersible particles of each formulation were separated from their liquid micellar phase. 1 gram of each phase was then put into a vial and the headspace was analyzed by SPME. Beforehand, a calibration curve was prepared for each phase by adding a known amount of fragrance to each phase.

Figure 1 shows the calculated percentages of fragrance found in micellar solutions and dispersed particles of body wash composition A according to example 1 of the present invention. For the sake of simplicity, the values in this graph represent the percentage of fragrance calculated for one fragrance raw material, ie the raw material with the strongest signal in the chromatographic detector. The results in Figure 1 show that after aging and reaching thermodynamic equilibrium, the total amount of fragrance contained in the GLPPD system of the present invention is higher than that in the micellar solution.

In contrast, as shown in Figure 2, the percentage of fragrance found in the micellar solution of Comparative Body Wash Composition B was inversely higher than that in the additional fatty ester used as the oily carrier. It is to be noted here that 3% of the fatty ester myristyl myristate was added to the comparative detergent and in the absence of ethylene glycol distearate it was slightly opaque in appearance. Also, it was observed that if 1% myristyl myristate was added together with 1% fragrance, the mixture fragrance/fatty ester became completely dissolved by the surfactant micelles. These observations indicate that in the case of Comparative Body Wash B, most of the carrier and fragrance are solubilized by the surfactant micelles.

Example 3

Application of body washes to wool surfaces and fragrance deposition on treated surfaces Measurement

A comparative analysis of the aroma deposition achieved with the delivery system of the prior art and the GLPPD, the object of the present invention, is shown graphically in FIG. 3 . The figure shows the deposition on wool after washing with two body washes, one containing myristyl myristate and the other containing the polymer isomyristyl dimer/IPDI as the fragrance carrier Typical chromatographic analysis of aroma. On the "Y" axis of the graph are shown the area count units associated with the strength of each starting material, while on the "X" axis the chromatographic peaks of the starting materials are shown by retention time. The body wash composition of the present invention used in this experiment has been previously described in Example 1. Fragrance raw material analysis was carried out by SPME in the headspace of the vial containing the wool sample. The composition of the samples and their associated retention times (RT) are as follows: limonene (RT=9.08); benzyl acetate (RT=12.9); cyclohexyl acetate (RT=16.69); cyclohexanol 2-(1, 1-dimethylethyl)-, acetate (RT=18.92); 2-methylundecanal (RT=21.53); 4-(1,1-dimethylethyl)-α-methylphenylpropanal (RT=27.67); cyclopentaneacetic acid, 3-oxo-2-pentyl, methyl ester (RT=32.25); hexyl salicylate (RT=33.64).

The analysis of Figure 3 comprehensively reveals that the level of fragrance deposition obtained using GLPPD as a fragrance carrier (object of the present invention) is higher than that obtained using conventional fatty acid esters as a fragrance carrier.

Example 4

Preparation of body wash compositions according to the invention

Two body wash compositions were prepared as described below by mixing the following ingredients in the proportions indicated:

1) Fragrance #2: 1.0 g of fragrance composition containing the following raw materials: Limonene (RT 9.45); Dihydromercenol (RT 10.46); Phenylethyl alcohol (RT 11.43); Cyclohexyl acetate (RT 16.91); Verdox ( RT 19.10); Veloutone (RT 19.78); Lillial (RT 27.97); Amyl Salicylate (RT 28.46 and 29.31); Hexyl Salicylate (RT: 33.77); Gala Musk (RT: 39.91)

2) Mixtures for the outer dispersed phase and the inner dispersible phase respectively: 0.1 g acrylamidopropyltrimethylammonium chloride (and) acrylamide copolymer (Salcare SC-60); 1.0 methacrylate trimethylamino Ethyl chloride (Salcare SC-96)

3) The first surfactant 1: 15.0g Sodium Laureth-2Sulfate

4) Second surfactant: 3.0 g cocoaaminopropyl betaine

5) Internal phase stabilizer: 2.0 trihydroxystearin

6) Internal phase stabilizer: 0.5 g sorbitan isostearate

7) Stabilizer/Thickener: 1.0 g Pentaerythritol Tetrastearate (and) PEG-6 Caprylic/Capric Glycerides (and) Water

8) Preservative: 0.1g DMDM hydantoin

9) Water: make up 100g

Part A: Acrylamidopropyltrimethylammonium chloride (and) acrylamide copolymer cationic dispersion polymer (transport polymer 1) was hydrated by gradually mixing 0.5 g of polymer in 20 g of water until a clear solution. The polymer trimethylaminoethyl methacrylate chloride (Salcare SC-96; carrier polymer 2) and fragrance were then added to the hydrated polymer 1 to form an opaque mixture. Part B: Mix the first, second, stabilizing surfactant, and thickener and heat to 70°C. Add remaining water if needed.

Part A was mixed with Part B at 40°C and then stirred thoroughly to form the surfactant/polymer complex or GLPPD, the object of the present invention. After thorough stirring, the body wash composition is cooled to room temperature.

The analysis of Figure 4 fully reveals that using GLPPD as a fragrance carrier (object of the present invention) achieves a higher level of fragrance deposition than using the same body wash formulation but without the polymer gel complex (or control) The level of aroma deposition obtained.

Example 5

Preparation of the shampoo composition according to the invention

Shampoo compositions were prepared as described below by mixing the following ingredients in the proportions indicated:

1) Fragrance #3: 1.0 g of fragrance composition containing the following raw materials: Dihydromercenol (RT 10.56); Linalool (RT 11.49); Terpineyl Acetate (RT 21.07); Benzyl Acetate (RT 25.94); : 27.73); Tricyclodecenyl Propionate (VerdylPropionate) (RT 28.20); Undecanolide (RT 29.33); Hexyl Salicylate (RT 33.70); Iso-E Super (RT 34.52); Habanolide (RT 39.59); Gala Musk (RT 40.04).

2) Polymers for the outer dispersed phase and the inner dispersible phase respectively: 0.1 g acrylamidopropyltrimethylammonium chloride (and) acrylamide copolymer (Salcare SC-60); 1.0 g polyvinylamine ( Lupamin 9096)

3) The first surfactant 1: 15.0g 2-Laureth-2Sulfate (Sodium Laureth-2Sulfate)

4) Second surfactant: 3.0 g cocoaaminopropyl betaine

5) Internal phase stabilizer: 2.0g trihydroxystearin

6) Internal phase stabilizer: 0.5 g sorbitan isostearate

7) Stabilizer/Thickener: 1.0 g Pentaerythritol Tetrastearate (and) PEG-6 Caprylic/Capric Glycerides (and) Water

8) Preservative: 0.1g DMDM hydantoin

9) Water: make up 100g

Part A: Acrylamidopropyltrimethylammonium chloride (and) acrylamide copolymer cationic dispersion polymer (transport polymer 1) was hydrated by gradually mixing 0.5 g of polymer in 20 g of water until a clear solution. The polymer polyvinylamine (carrier polymer 2) and fragrance are then added to polymer 1 to form a mixture. Part B: Mix the first, second, stabilizing surfactant, and thickener and heat to 70°C. Add remaining water if needed.

Part A was mixed with Part B at 40°C, and the mixture was then stirred thoroughly to form the surfactant/polymer complex or GLPPD, the object of the present invention. After thorough stirring, the shampoo composition is cooled to room temperature.

The analysis of Figure 5 fully reveals that using GLPPD as a fragrance carrier (object of the present invention) achieves a higher level of fragrance deposition than using the same shampoo formulation but without the polymer gel complex (or control) The level of aroma deposition achieved.

Claims (12)

1. A carrier and delivery system for hydrophobic benefit agents comprising: a) a water-miscible cationic polymer or polymer mixture capable of forming a gel capable of complexing a surfactant system; b) one or more water-immiscible liquid polymers or oligomers capable of complexing the surfactant system; and c) hydrophobic benefit agents; wherein the cationic polymer or polymer mixture comprises an acrylamide polymer, When the carrier and delivery system is mixed with the surfactant system, it can form a gel-liquid polymer/polymer dispersion, thereby providing a surface capable of dissolving hydrophobic agents and preventing them from distributing. Stable surfactant-polymer gels in active agent micelles. 2. The delivery system of claim 1, wherein the hydrophobic benefit agent is a fragrance. 3. A delivery system according to claim 1 or 2 capable of forming a gel-liquid polymer/polymer dispersion with a surface cleaning surfactant. 4. The delivery system according to claim 3, wherein the water-miscible cationic polymer or polymer mixture has a high degree of cationic substitution, a molecular weight higher than 400K and a cationic charge of 1-30 meq/g. 5. The carrier system according to claim 3, wherein the water-miscible cationic polymer or polymer mixture further comprises polyethyleneimine PS, cationic polyamine, cationic polyacrylamide, methacrylate trimethylamino Ethyl chloride polymer, polyvinylamine, polydimethyldiallylammonium chloride, Polyquaternium 10 and mixtures thereof. 6. The delivery system according to claim 1, wherein the water-immiscible liquid polymer or oligomer is selected from the group consisting of polymers and oligomers derived from isophorone diisocyanate, hydrogenated polyisobutylene /Polybutene copolymer, hydrogenated polydecene and their mixtures. 7. The delivery system of claim 1, wherein the acrylamide polymer is acrylamidopropyltrimethylammonium chloride acrylamide copolymer. 8. The delivery system of claim 1, wherein the water-immiscible liquid polymer or oligomer capable of complexing with the surfactant matrix has a viscosity of 500-20,000 cps. 9. A method for preparing the delivery system according to any one of claims 1-8, comprising: a) mixing a water immiscible liquid polymer or oligomer with a hydrophobic benefit agent to obtain a water dispersible phase; b) hydrating a water-miscible cationic polymer or mixture of cationic polymers in an aqueous medium to obtain an aqueous polymer solution capable of forming a dispersed phase; and c) mixing the dispersible and dispersed phases to form a delivery system for the hydrophobic agent. 10. A fragranced consumer product comprising a micelle-forming surfactant and a fragrance, wherein the fragrance is in the form of a delivery system according to any one of claims 1-8. 11. A perfumed consumer product according to claim 10 in the form of a cleansing or conditioning composition for treating skin, hair, fabrics or other surfaces. 12. A perfumed consumer product according to claim 11 which is a bath or shower wash, toilet soap, detergent or fabric softener, dish or window cleaner, or heavy duty cleaner.

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