ES2587553T3 - Tissue treatment - Google Patents

Abstract

Use of an active encapsulated phase change compound, which has a phase transition temperature of from 24 to 39 ° C, to improve the beneficial effect of an additional encapsulated volatile beneficial agent in the presence of an additional non-encapsulated volatile beneficial agent, in wherein the encapsulated volatile beneficial agent is selected from perfume, insect repellent, aromatherapy oil, sensory stimulants such as menthol and an essential oil, and wherein the active phase change compound is paraffin wax comprising n-octadecane .

Description

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DESCRIPTION

Tissue treatment Technical field

The present invention relates to the use of an encapsulated phase change material to improve the beneficial effect of an additional encapsulated material, which is a volatile beneficial agent.

Background and prior art

Encapsulated technologies, for example encapsulated perfume, are known for use in lavender products. These technologies provide increased fragrance supply over conventional free perfume oil, by retaining the loss of perfume loss during the drying process by protecting the perfume in the capsule. The encapsulation also ensures that the perfume is released at the optimum time to allow the provision of a perceptible benefit for the user of washed clothing. Examples of the mode of action of the encapsulates include: shear sensitive action, in which the perfume core is released in response to the mechanical breakage of the encapsulation, and diffuser action, in which the perfume is released by diffusion through the outer wall of the encapsulation. Some encapsulates are capable of both release mechanisms. One type of capsule that has been used in lavender compositions has a melamine formaldehyde shell and a perfume core. The release of perfume from the melamine formaldehyde capsules is based on friction, the benefit being obvious after having applied a rubbing process to the treated tissue. This benefit is provided by a enhancer in the intensity of the perfume during use.

WO 2010/060677 and WO 2010/028907 disclose the use of encapsulated perfume particles to improve the longevity of freshness of laundry detergent compositions or fabric conditioners, which may also comprise additional encapsulates. Phase change materials are also known in the encapsulated form. The related European Patent of the present authors number EP 07821655 discloses the use of a fabric softening composition comprising a fabric softening compound and a material having a thermal phase transition temperature within the range of 24 to 39 ° C, to impart a cold sensation to a tissue. WO 2008/058833 also relates to a fabric softening compound and a material having a thermal phase transition temperature within the range of 26 to 39 ° C, encapsulated in a polymeric shell.

EP 0371535 discloses tissue treatment compositions that have anti-wrinkle benefits, which contain a mixture of hydrocarbons having a thermal phase transition temperature between 27 and 38 ° C, US Pat. 2002/0061954 is directed to thermal energy storage compositions comprising microcapsules containing a plurality of microencapsulated phase change materials to provide a cooling effect.

The authors of the present invention have now found that the inclusion of a low proportion of encapsulated phase change material significantly increases the effect of shear release associated with a tissue treatment formulation containing encapsulated volatile beneficial agents, for example fragrance.

Definition of the invention

In accordance with the invention, the use of an active encapsulated phase change compound, having a phase transition temperature of from 24 to 39 ° C, is provided to improve the beneficial effect of an additional encapsulated volatile beneficial agent, in the presence of an additional non-encapsulated volatile beneficial agent, in which the encapsulated volatile beneficial agent is selected from perfume, insect repellent, aromatherapy oil, sensory stimulants such as menthol and an essential oil, and in which the active compound of Phase change is a paraffin wax comprising n-octadecane.

A lavender composition provides a convenient mode of supply for encapsulated materials to provide use in accordance with the invention.

Detailed description of the invention

The encapsulated volatile beneficial agent

The encapsulated volatile beneficial agent comprises a capsule and a volatile beneficial agent. The capsule comprises a cover and a core.

The capsule comprising the volatile beneficial agent comprises a cover that is comprised of materials that include, but are not limited to, polyurethane, polyamide, polyolefin, polysaccharide, protema, silicone, lipid, modified cellulose, gums, polyacrylate, polyphosphate, polystyrene, Polyesters or combinations of these materials. Another encapsulating material that can be used effectively in the present invention is such as polymethylmethacrylate. Preferred encapsulating polymers include those formed from formal melanin condensates.

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dehido or urea formaldehyde, as well as similar types of aminoplasts. Most preferably, the cover comprises melanin formaldehyde.

Additionally, the microcapsules made by simple or complex coacervation of gelatin are suitable for use in compositions of the invention.

A representative procedure used for encapsulation of aminoplasts is that disclosed in US Pat. No. 3,516,941, although it is recognized that many variations are possible with respect to the materials and steps of the process. A representative procedure used for the encapsulation of gelatin is disclosed in US Pat. No. 2,800,457, although it is recognized that many variations are possible with respect to materials and process steps. Both of these procedures are set forth in the context of encapsulation of fragrances for use in consumer products in US Pat. Nos. 4,145,184 and 5,112,688, respectively.

Encapsulation can provide pore vacancies or interstitial openings, depending on the encapsulation techniques used.

Fragrance capsules known in the art and suitable for use in the present invention comprise a wall or cover comprising a three-dimensional crosslinked network of an aminoplast resin, more specifically a polymer or copolymer of substituted or unsubstituted acrylic acid crosslinked with a preticulated urea-formaldehyde condensate or a melanin-formaldehyde pre-condensate.

The microcapsule formation that uses mechanisms similar to the previous mechanism, which uses (i) pre-condensed melanin-formadehyde or urea-formaldehyde and (ii) polymers containing substituted vinyl monomer units that have remnants of donor functional groups of Protons (for example, sulfonic acid groups or carboxylic acid anhydride groups) attached thereto, are disclosed in US Pat. 4,406,816 (2-acrylamido-2-methyl-propane sulfonic acid groups), the published Patent Application GB 2,062,570 A (styrene sulfonic acid groups) and the Published Patent Application GB 2,006,709 A (groups anhydride of carboxylic acid).

The capsules for use in the invention may further comprise a carrier oil in the core. Vehicle oils are hydrophobic materials that are miscible in the volatile beneficial agent materials used in the present invention. Suitable oils are those that have a reasonable affinity for the beneficial agent. When the beneficial agent is a perfume, suitable materials include, but are not limited to, triglyceride oil, mono and diglycerides, mineral oil, silicone oil, diethyl phthalate, polyalpha olefins, castor oil and isopropyl myristate. Preferably, the oil is a triglyceride oil, most preferably it is a capric / caprilic triglyceride oil.

For liquid lavender compositions, the capsules can be used in the form of a slurry, which preferably comprises about 40% solids.

The particle size and the average diameter of the capsules can vary from about 10 nanometers to about 1000 micrometres, preferably from about 50 nanometers to about 100 micrometers, more preferably from about 2 to about 40 micrometres, even more preferably from about 4 to 15 micrometers A particularly preferred range is from about 5 to 10 micrometers, for example 6 to 7 micrometers. The distribution of the capsule can be narrow, wide or multimodal. Multimodal distributions may be composed of different types of chemical capsule compounds.

The cover may further comprise a deposition aid, which is preferably covalently bonded.

A preferred deposition aid is a polysaccharide. The polysaccharide preferably has a main chain with p-1,4 bond.

Preferably, the polysaccharide is a cellulose, a cellulose derivative, or other polysaccharide with a p-1.4 bond that has an affinity for cellulose, such as polymannan, polyglucan, polyglucomannan, polyxyloglucan and polygalactomannan or a mixture thereof. . More preferably, the polysaccharide is selected from the group consisting of polyloxyglucan and polygalctomannan.

Highly preferred polysaccharides are selected from locust bean gum, tamarind gum, xylo-glucan, non-ionic guar gum, cationic starch and mixtures thereof. Most preferably, the deposition aid is locust bean gum.

Preferably, the main polysaccharide chain has only p-1,4 bonds. Optionally, the polysaccharides have bonds in addition to the p-1,4 bonds, such as p-1,3 bonds. Accordingly, some other links are optionally present. The main polysaccharide chains that include some material that is not a removed ring also fall within the scope of the present invention (either terminal or within the polysaccharide chain).

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The polysaccharide can be straight or branched. Many naturally occurring polysaccharides have at least some degree of branching, or in some proportion at least some removed rings are in the form of hanging side groups (which, therefore, do not count for themselves in determining the degree of substitution) on a main polysaccharide main chain.

Preferably, the polysaccharide is present in proportions of between 0.1% to 10% w / w, by weight by weight of the total amount of the particle.

The deposition aid, which is preferably a polysaccharide, is attached to the particle by means of a covalent bond, by cross-linking or by strong adsorption, preferably by means of a covalent bond or by cross-linking and, most preferably, by means of a covalent bond By crosslinking as used in the present invention, it is understood that the deposition aid is adsorbed on the particle as polymerization develops and the particle grows in size, leaving part of the deposition aid adsorbed inside the particle being buried. . Consequently, at the end of the polymerization, part of the deposition aid is trapped and bound in the polymer matrix of the particle, while the rest is free to extend into the aqueous phase.

By strong adsorption as used in the present invention, strong adsorption of the deposition aid to the surface of the particle is understood; said adsorption may occur, for example, due to a hydrogen bond. to Van Der Waals or to electrostatic attraction between the deposition aid and the particle.

In this way, the deposition aid is fundamentally attached to the surface of the particle and is not, to a significant degree, distributed through the internal mass of the particle. This is different with respect to graft copolymers, in which, for example, a polysaccharide can be grafted along a polymer chain. A particle that is formed from a graft copolymer could, therefore, contain polysaccharide along the internal mass of the particle, as well as on the surface of the particle and the present invention is not intended to cover said particle. . Accordingly, the particle that is produced when a polysaccharide is used as the deposition aid according to the method of the invention, can be considered as a "hairy particle", which is different from a graft copolymer. This feature of the invention provides significant cost reduction opportunities for the manufacturer since much less deposition adjuvant is required to achieve the same activity rate as systems using polysaccharide copolymers.

The deposition aid is present in the outermost portion of the shell, which is made of melanin formaldehyde polymer with a thickness of from 5 to 20 nm.

Polyesters of terephthalic acids and other aromatic dicarboxylic acids having soil-releasing properties, in particular, those called PET / POET (polyethylene terephthalate / polyoxyethylene terephthalate) and PET / PEG (polyethylene terephthalate / polyethylene glycol) terephthalate They can be used as deposition aids.

The polymer must have at least one mole of free OH group per mole of polymer, to allow covalent bonding to the reactive dye (s). Most preferably, the polymer comprises at least two free OH groups. Preferably, the OH groups are the terminal groups of the polymer.

Preferably, the oxyalkyleneoxy [-O (CH2) tO-] is selected from: oxy-1,2-propyleneoxy [-OCH2CH (Me) O-], oxy-1,3-propyleneoxy [-OCH2CH2CH2O-]; and, oxy-1,2-ethyleneoxy [-OCH2CH2O-] (t is an integer). As is evident, one or more of the CH2 groups of the oxyalkyleneoxy may be substituted by C1 to C4 alkyl group (s).

The polyoxyalkyleneoxy facilitates the water solubility of the polymer. Preferably, the polyoxyalkyleneoxy [-O (CH2) w-] sO- is selected from: polyoxy-1,2-propyleneoxy [-OCH2CH (Me) -] sO-; polyoxy-1,3-propyleneoxy [-OCH2CH2CH2-] sO-; and, polyoxy-1,2-ethyleneoxy [-O-CH2CH2-UO-. The polyoxyalkyleneoxy can be a mixture of different oxyalkylene oxoxy. Different types of polyoxyalkylenoxy may be present in the polymer. (s and w are whole numbers).

Preferably, the phenyl dicarboxylate is a 1,4-phenyl dicarboxylate. Preferably, the phenyl dicarboxylate is of the form: -OC (O) C6H4C (O) C-.

Examples of preferred polymers are a PET / POET (polyethylene terephthalate / polyoxyethylene terephthalate), PEG / POET (polyethylene glycol / polyoxyethylene terephthalate) or PET / PEG (polyethylene terephthalate / polyethylene glycol). The most preferable is a PET / POET.

The structure of a preferred polymer is found below.

image 1

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in which

R2 is selected from H or CH3, preferably H; b is 2 0 3, preferably 2; and is 2 to 100, preferably 5 to 50;

n and m are independently 1 to 100, preferably 2 to 30; and, the terminal (final) groups of the polymer are (CH2) bOH.

The polymers can be synthesized in a variety of ways, for example an esterification reaction of dimethyl terephthalate with ethylene glycol or polyethylene glycol; This reaction is exposed in Polymer Bulletin vol. 28, pages 451458, (1992). Another example is the direct esterification of terephthalic acid with ethylene glycol and / or propylene glycol and polypropylene glycol.

A further example is a transesterification of a polyethylene terephthalate with a polyethylene glycol or polypropylene glycol.

It is preferred that the number average molecular weight of the polymer is within the range of from 1000 to 50,000, preferably the average molecular weight of the polymer is within the range of from 1000 to 15,000, more preferably from 2000 to 10,000.

The volatile beneficial agent

The volatile beneficial agent is an agent that is volatile and confers a benefit to the tissue.

Suitable volatile beneficial agents include, but are not limited to, perfumes, insect repellents, essential oils, sensory stimulants such as menthol and active aromatherapy products, preferably perfumes. Mixtures of volatile beneficial agents can be used.

The total amount of volatile beneficial agent is preferably from 0.01 to 10% by weight, more preferably from 0.05 to 5% by weight, even more preferably from 0.1 to 4.0%, most preferably from 0, 15 to 4.0% by weight, based on the total weight of the composition.

The preferred volatile beneficial agent is a perfume. The compositions of the compositions of the invention also comprise a volatile unconfined beneficial agent (also called non-encapsulated). When the volatile beneficial agent is a perfume, the perfumes described below are suitable for use as the encapsulated volatile beneficial agent and also as the unconfined perfume component.

Useful perfume components include materials of both natural and synthetic origin. These include individual compounds and mixtures. Specific examples of such components can be found in the current literature, for example, in the Fenaroli's Handbook of Flavor Ingredients, (1975), CRC Press; Synthetic Food Adjuncts, (1947) by M. B. Jacobs, edited by Van Nostrand; o Perfume and Flavor Chemicals by S. Arctander, (1969), Montclair, N.J. (USES). These substances are well known to persons skilled in the art of perfuming, dressing, and / or flavoring consumer products, that is, imparting a smell and / or an aroma or flavor to a traditionally scented or aromatized consumer product, or modification of the smell and / or taste of said consumer product.

By perfume in this context, it is understood not only a fully formulated product fragrance, but also selected components of said fragrance, particularly those that are prone to be lost, such as the so-called "exit notes"

The output notes are defined by Poucher (Journal of the Society of Cosmetics Chemists, vol. 6, (no. 2), p. 80, (1955). Examples of well-known output notes include lemon oils, linalool , linalyl acetate, lavender, dihydromyrcenol, rose oxide and cis-3-hexanol Typically, the release notes comprise 15-25% by weight of a perfume composition and, in those embodiments of the invention containing an increased proportion of output notes, it is considered that at least 20% by weight is present within the encapsulation.

Part or all of the perfume or pro-fragrance may be typical, encapsulated perfume components, which is advantageous for encapsulating, including those having a relatively low boiling point, preferably those having a boiling point less than 300, preferably 100-250 ° Celsius and pro-fragrances that these components can produce.

It is also advantageous to encapsulate the components of the perfume that have a low Clog P (ie, those that will be distributed in the water), preferably with a Clog P less than 3.0. These materials, of relatively low boiling point and relatively low Clog P, have been referred to as the "late flowering" perfume ingredients and include the following materials:

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allyl caproate, amyl acetate, amyl propionate, ammonium aldehyde, anisole, benzaldelddo, benzyl acetate, benzyl acetone, blessing alcohol, benzyl formate, iso benzyl valerate, benzyl propionate, beta gamma hexenol, camphor gum, Levo -carvone, d-carvone, cinnamic alcohol, cinnamyl formate, cis-jasmona, cis-3-hexenyl acetate, cumnnic alcohol, cyclal C, dimethyl benzyl carbinol, dimethyl benzyl carbinol acetate, ethyl acetate, ethyl acetate , ethyl amyl ketone, ethyl benzoate, ethyl butyrate, ethyl hexyl ketone, phenyl ethyl acetate, eucalyptol, eugenol, phenyl acetate, flower acetate (tricyclo decenyl acetate), frutene (decenyl propionate tricycle), geraniol, hexenol, hexenyl acetate, hexyl acetate, hexyl formate, hydrotropyl alcohol, hydroxycitronal alcohol, indone, isoairnolic alcohol, iso mentone, isopulegyl acetate, isoquinolone, ligustral, linalool, linalool oxide, linalyl formate, chin, methyl aceto Phenone, methyl amyl ketone, methyl anthranilate, methyl benzoate, methyl benzyl acetate, methyl eugenol, methyl heptenone, methyl heptin carbonate, methyl heptyl ketone, methyl hexyl ketone, methyl phenyl carbinyl acetate, methyl salicylate, anthranilate methyl-N-methyl, nerol, octalactone, octyl alcohol, p-cresol, p-cresol methyl ether, p-methoxy acetophenone, p-methyl acetophenone, phenoxy ethanol, phenyl acetaldehyde, phenyl ethyl acetate, phenyl ethyl alcohol, phenyl ethyl dimethyl carbinol, penyl acetate, propyl boronate, pulegone, rose oxide, safrole, 4-terpinenol, alpha-terpinenol, and / or viridine.

Preferred non-encapsulated perfume ingredients are those components of hydrophobic perfumes with a ClogP above 3. As used in the present invention, the term "ClogP" means the logarithm calculated on the basis of the octanol / water partition coefficient. (P). The octanol / water partition coefficient of a perfume raw material (PRM) is the ratio between its equilibrium concentrations in octanol and water. Since this measure is a ratio of the equilibrium concentration of a PRM in a non-polar solvent (octanol) with its concentration in a polar solvent (water), ClogP is also a measure of the hydrophobicity of a material (the higher it is the value of ClogP, greater the hydrophobicity of the material). ClogP values can be easily calculated from a program called “CLOGP,” which is available from Daylight Chemical Information Systems Inc., Invine Calif., USA. Octanol / water partition coefficients are described in more detail in US Pat. No. 5,578,563.

Perfume components with a ClogP greater than 3 comprise: Iso E super, citronellol, ethyl cinnamate, bangalol, 2,4,6-trimethylbenzaldehyde, cinnamic hexyl aldehyde, 2,6-dimethyl-2-heptanol, diisobutylcarbinol, salicylate ethyl, phenethyl isobutyrate, ethyl hexyl ketone, propyl amyl ketone, dibutyl ketone, heptyl methyl ketone, 4,5-dihydrotoluene, capdelic aldehyde, citral, geranial, isopropyl benzoate, cyclohexanopropionic acid, cannolic alcohol cuminaldehyde, 1-ethyl-4-nitrobenzene, heptyl formate, 4-isopropylphenol, 2-isopropylphenol, 3-isopropylphenol, allyl disulfide, 4-methyl-1-phenyl-2-pentanone, 2-propylfuran, allyl caproate, styrene, isoeugenyl methyl ether, indonaphthene, diethyl suberate, L-chin, racemic chin, p-cresyl isobutyrate, butyl butyrate, ethyl hexanoate, propyl valerate, n-pentyl propanoate, hexyl acetate, methyl heptanoate , trans-3,3,5-trimethylcyclohexanol, 3,3,5-trimethylc iclohexanol, ethyl p-anisoate, 2-ethyl-1-hexanol, benzyl isobutyrate, 2,5-dimethylthiophene, isobutyl 2-butenoate, caprilnitrile, gamma-nonalactone, nerol, trans-geraniol, 1-vinylheptanol, eucalyptol, Ethyl 4-terpinenol, dihydrocarveol, ethyl 2-methoxybenzoate, ethyl cyclohexanecarboxylate, 2-ethylhexanal, ethyl amyl carbinol, 2-octanol, 2-octanol, methylphenylglycidate, diisobutyl ketone, coumarone, propyl isovalerate , isopentyl propanoate, 2-ethylbutyl acetate, 6-methyl-tetrahydroquinoline, eugenyl methyl ether, ethyl dihydrocinnamate, 3,5-dimethoxytoluene, toluene, ethyl benzoate, n-butyrophenone, alpha-terpineol, 2-methylbenzoate methyl, methyl 4-methylbenzoate, methyl 3-methylbenzoate, sec-butyl n-butyrate, 1,4-cineole, phenolic alcohol, pinanol, cis-2-pinanol, 2,4-dimethylacetophenone, isoeugenol, safrole, methyl 2-octinoate, o-methylanisol, p-cresyl methyl ether, ethyl anthranilate, linalool, phenyl butyrate, dibut ethylene glycol irate, diethyl phthalate, phenyl mercaptan, cumic alcohol, m-toluquinoline, 6-methylquinoline, lepidine, 2-ethylbenzaldehyde, 4-ethylbenzaldehyde, o-ethylphenol, p-ethylphenol, m-ethylphenol, (+) -polegon, 2,4-dimethylbenzaldehyde, isoxyaldehyde, ethyl sorbate, benzyl propionate, 1,3-dimethylbutyl acetate, isobutyl isobutanoate, 2,6-xylenol, 2,4-xylenol, 2,5-xylenol, 3 , 5-xylenol, methyl cinnamate, hexyl methyl ether, benzyl ethyl ether, methyl salicylate, butyl propyl ketone, ethyl amyl ketone, hexyl methyl ketone, 2,3-xylenol, 3,4-xylenol, cyclopentadenanolide and 2-phenylacetate of ethyl phenyl.

It is common for a plurality of perfume components to be present in a formulation. In the compositions of the present invention, it is considered that there will be four or more, preferably five or more, more preferably six or more or even seven or more different perfume components from the list of late-flowering perfumes given above. and / or the list of perfume components with a ClogP above 3 present in the perfume.

The volatile beneficial agent can be an insect repellent. In chemical terms, the most repellent active compounds belong to one of four groups: amides, alcohols, esters or ethers. Suitable for use in the present invention are liquids or solids with a relatively low melting point and a boiling point above 150 ° C, preferably liquids. They evaporate slowly at room temperature. When the volatile beneficial agent is an insect repellent, the repellents described below are suitable for use as an encapsulated volatile beneficial agent, and also as the unconfined repellent component.

Many suitable insect repellents are related to perfume species (many fall into both classes). The most commonly used insect repellents include: DEET (N, N-diethyl-m-toluamide), essential oil of lemon eucalyptus (Corymbia citriodora) and its active compound p-menthane-3,8-diol (PMD), Icarinine, also known as Picaridin, D-Limonene, Bayrepel, and KBR 3023, Nepetalactone, also known as “catnip oil”, citronella oil, Permethrin, Neem oil and peat bog.

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Known insect repellents obtained from natural sources include: Achhillea alpina, alpha-terpinen, basil oil (Ocimum basilicum), Callicarpa americana (Beautyberry), camphor, carvacrol, castor oil (Ricinus communis), catnip oil (Nepeta species), cedar oil (Cedrus atlantica), celery extract (Apium graveoles), cinnamon (Cinnamomum Zeylanicum leaf oil), citronella oil (Cymbopogon fleusus), clove oil (Eugenic caryophyllata), eucalyptus oil (eucalyptol 70% +, also known as cine- ol), fennel oil (Foeniculum vulgare), garlic oil (Allium sativum), geranium oil (also known as Pelargonium graveolens), lavender oil (Lavandula officinalis), oil essential of the lemon eucalyptus (Corymbia citriodora) and its active ingredient p-menthane-3,8-diol (PMD), lemongrass oil (Crmbopogon flexuosus), calendulas (Tagetes species), marjoram (Tetranychus urticae and Eutetranychus orientalis) , Neem oil (Azadirachta indica), oleic acid, peppermint (Menta x piperita), pennyroyal (Mentha pulegium), pyrethrum (of the Chrysanthemum species, particularly C. cinerariifolium and C. coccineum), rosemary oil (Rosmarinus officinalis) , Spanish Flag Lantana camara (Helopeltis theivora), Solanum villosum berry juice, tea tree oil (Malaleuca alterifolia) and thyme (Thymus species) and mixtures thereof.

Preferred encapsulated insect repellents are mosquito repellents available from Celessence, Rochester, England. Celessence Repel, which contains the active ingredient Saltidin ™ and Celessence Repel Natural, which contains the active compound Citrepel ™ 75. Saltidin is a synthetic molecule originally developed by the Bayer Corporation. Citripel is produced from eucalyptus oils and has a high content of p-menthane-3,8-diol (PMD). A preferred non-encapsulated repellent is Citriodiol ™ supplied by Citrefine.

Another group of volatile beneficial agents with which the present invention can be applied are the so-called "aromatherapy" materials. These include essential oil components such as amaro, eucalyptus, geranium, lavender, macia extract, neroli, nutmeg, mint spicata, sweet violet leaf and valerian.

The active encapsulated phase change compound

The active phase change compounds are materials that can absorb, store and release heat while the material changes its physical form. This is known as a phase change. The change from solid water (ice) to liquid is an example of this phenomenon. During these phase changes large amounts of heat are absorbed or released.

The active phase change compound has a thermal phase transition temperature (TPTT) within the range of 24 to 39 ° C. TPTT can be measured conveniently using the Perkin & Elmer thermal analysis system.

The Perkin & Elmer thermal analysis system measures the heat flux within a material to be heated as a function of the material's temperature. By investigating a material at various temperatures, a temperature profile is obtained. A temperature profile of this type usually has one or more peaks, each peak corresponding to a maximum for heat flow within the material at a specific temperature. The temperature that corresponds to the highest peak in the temperature profile is referred to as the transition temperature of the thermal phase. Generally, a high TPTT corresponds to a high softening temperature of the material. The material has a TPTT within the range of 24 to 39 ° C, preferably from 25 to 39 ° C, more preferably from 26 to 38 ° C, and most preferably from 26 to 30 ° C.

The active phase change compounds possess latent heat and show a phase transition phenomenon between phases at a phase transition temperature. Phase changes of the present invention include phase changes from solid to liquid, liquid to vapor, solid to vapor, gel to liquid-crystalline. In the present invention, preferable phase transitions are changes from solid to liquid phase or from liquid to solid phase. In all these phase changes, the PTMs reversibly absorb or release heat from the environment around the phase transition temperature, which is accompanied by a corresponding change in the ambient temperature.

The active phase change compound may be in the form of a composition (or mixture) provided that the total composition has a TPTT within the range of 24 to 39 ° C, preferably from 25 to 39 ° C, more preferably from 26 to 38 ° C and most preferably from 26 to 30 ° C.

Suitable compositions may comprise hydrocarbon materials comprising a linear or branched alkyl chain and preferably comprises an average of from 12 to 50 carbon atoms per molecule, preferably from 12 to 30 carbon atoms. Preferably, the hydrocarbon materials are either alkanes or alkenes. Relatively small amounts of non-alkyl substituent groups may be present, provided that the hydrocarbon nature of the product is not fundamentally affected. Mixtures of these materials can be used.

Examples of suitable hydrocarbon materials for use in the composition of hydrocarbons are liquid hydrocarbon materials of natural origin. Other liquid hydrocarbon materials include liquid fractions obtained from crude oil, such as mineral oil, liquid paraffins, cracked hydrocarbons and mixtures thereof. In the present invention, the active phase change compound includes paraffin wax (which comprises n-octadecane).

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Examples of solid or semi-solid hydrocarbon materials are the longer chain length paraffinic materials, and hydrogenated versions of some of the aforementioned liquid materials.

A particularly useful combination of hydrocarbon materials is a mixture of mineral oil (for example, M85 from Daltons Company) and petrolatum (for example, Silkolene 910 from Daltons), in which the weight ratio of mineral oil to petroleum jelly is selected such that the TPTT of the mixture is within the range of 24 to 39 ° C. In the experiments of the authors of the present invention, this result was obtained using a mineral oil to petrolatum ratio of less than 3: 1, preferably from 2: 1 to 1: 3. The mineral oil was a liquid mixture of linear and branched hydrocarbons containing an average number of carbon atoms per molecule of 26. Vaseline was a semi-solid mixture of linear and branched hydrocarbons containing an average number of carbon atoms per molecule of 26. , and with a softening temperature of approximately 50 ° C.

The active encapsulated phase change compound comprises a capsule and an active phase change compound. The capsule comprises a cover and a core. The capsule for the phase change material preferably has a cover that is permeable to the volatile beneficial agent not confined in the composition. A mixture of encapsulated active phase change compounds may be present.

The active phase change compound is encapsulated in a polymer shell to form encapsulated particles having a preferred particle size of from 10 nm to 1000 pm, preferably 50 nm to 100 pm, more preferably 0.2 to 30 pm . The use of encapsulated materials has the advantage that the materials can be easily dispersed without interference or interaction with the fabric softener compound. An additional advantage is that the encapsulated material does not cause a sensation of "dirt" when deposited on the tissue, which may be present with materials of a semi-liquid nature.

Suitable encapsulating polymers include those formed from condensates of melanin-formaldehyde or urea-formaldehyde, as well as similar types of aminoplasts. Additionally, capsules made by simple or complex coacervation of gelatin are equally preferred for use with the coating. Capsules having cover walls comprising polyurethane, polyamide, polyolefin, polycarbonate, protema, silicone, lipid, modified cellulose, gums, polyacrylate, polyphosphate, polystyrene and polyester or combinations of these materials are equally functional.

Other examples of suitable active phase change compounds are the materials disclosed in WO 03/014460 which have a phase transition temperature of from 24 to 39 ° C, referred to herein as "Phase Transition Materials" or " PTMs ”on page 6, final paragraph, until the penultimate line on page 8.

A preferred material is Lurapret TX PMC 28 commercially available from BASF, which is a material, specifically paraffin wax (comprising n-octadecane), encapsulated in polymethylmethacrylate with a particle size within the range of 0.2 to 20 p.m. This material has a phase transition temperature of approximately 28 ° C.

The active phase change compounds are generally deposited to apply them from 0.2 to 1%, preferably 0.2 to 0.5% by weight of the tissue after drying. The encapsulated active phase change compounds are generally present in an amount of from 0.01 to 15% by weight, more preferably 0.01 to 10% by weight, even more preferably from 0.05 to 5% by weight, even more preferably from 0.05 to 2% by weight, more preferably even from 0.05 to 1% by weight and most preferably from 0.05 to 0.5% by weight of the fabric softening composition.

The encapsulated phase change material comprises a cover that is permeable to the volatile beneficial agent not confined in the composition. Suitable encapsulating polymers include those formed from melanin-formaldehyde or urea-formaldehyde condensates, as well as similar types of aminoplasts. Additionally, capsules made by simple or complex coacervation of gelatin are equally preferred for use with the coating. Capsules having cover walls comprising polyurethane, polyamide, polyolefin, polysaccharide, protema, silicone, lipid, modified cellulose, gums, polyacrylate, polyphosphate, polystyrene and polyester or combinations of these materials are equally suitable. A preferred material is polymethyl methacrylate.

Compositions

The use of the invention is preferably as a treatment applied by consumers in the home. The treatment can be applied directly to the fabric, for example, as a spray, or by a lavender product, such as a detergent composition and a fabric conditioning composition. The composition for use in the present invention is preferably a liquid. The compositions are preferably aqueous.

The lavender product will contain an active ingredient, which is preferably a surface active agent or a fabric conditioning agent. More than one active ingredient may be included. For some applications, a mixture of active ingredients may be used.

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The detergent compositions for use in the invention may contain a surface active compound (surfactant), which may be chosen from soap and anionic, cationic, nonionic, amphoteric and zwitterionic non-soap surfactant compounds and mixtures thereof. Many suitable surfactant compounds are available and are fully described in the literature, for example, in "Surface-Active Agents and Detergents", Volumes I and II, by Schwartz, Perry and Berch. Preferred detergent active compounds that can be used are soaps and synthetic non-soap anionic and non-ionic compounds.

Detergent compositions for use in the invention may contain linear alkylbenzene sulphonate, particularly linear alkylbenzene sulphonates having an alkyl chain length of C8-C15. It is preferred that the proportion of linear alkylbenzene sulfonate is from 0% by weight to 30% by weight, more preferably 1% by weight to 25% by weight, most preferably from 2% by weight to 15% by weight.

The compositions for use in the invention may contain other anionic surfactants in amounts in addition to the percentages indicated above. Suitable anionic surfactants are well known to those skilled in the art. Examples include primary and secondary alkyl sulfates, particularly C8-C15 primary alkyl sulfates; ether alkyl sulfates; olefin sulphonates; alkyl xylene sulfonates; dialkyl sulfosuccinates; and fatty acid ester sulphonates. Sodium salts are generally preferred.

Compositions for use in the invention may also contain non-ionic surfactant. Non-ionic surfactants that can be used include primary and secondary alcohol ethoxylates, especially ethoxylated C8-C20 aliphatic alcohols with an average of from 1 to 20 moles of ethylene oxide per mole of alcohol, and more especially primary aliphatic alcohols. and secondary C10-C15 ethoxylates with an average of 1 to 10 moles of ethylene oxide per mole of alcohol. Non-ethoxylated nonionic surfactants include alkyl polyglycosides, glycerol monoethers, and polyhydroxyamides (glucamide).

It is preferred that the proportion of non-ionic surfactant is from 0% by weight to 30% by weight, preferably from 1% by weight to 25% by weight, most preferably from 2% by weight to 15% by weight.

Fabric softener compound

The particle for use in the present invention is preferably a component of a laundry composition. The lavender composition is preferably a tissue conditioner. The fabric conditioner preferably comprises an active fabric softening compound.

The active fabric softening compound is preferably different from the active phase change compound. Suitable fabric softening compounds are described below.

Tissue conditioning agents (also referred to in the present invention as an active fabric softening compound or compound) may be cationic or non-ionic.

The fabric conditioning compositions for use according to the invention may be diluted or concentrated. The diluted products typically contain up to about 8%, generally about 2 to 8% by weight of softening active compound, while the concentrated products may contain up to about 50% by weight, preferably from about 8 to about 50%, more preferably from 8 to 25% by weight of active compound. In total, the products of the invention may contain from 2 to 50% by weight, preferably from 3 to 25% by weight of softening active compound.

The preferred softening active compound for use in rinse conditioning compositions of the invention is a quaternary ammonium compound (QAC). The preferred quaternary ammonium tissue conditioner for use in the compositions of the present invention are so-called "cuats ester".

Particularly preferred materials are triethanolamine quaternary ammonium compounds (TEA) with ester bonding comprising a mixture of mono-, di-, and tri-ester bonding components.

Typically, TEA-based fabric softening compounds comprise a mixture of mono-, di- and tri-ester forms of the compound, wherein the di-ester linker component comprises no more than 70% by weight of the softening compound of fabrics, preferably not more than 60% by weight of the fabric softening compound and at least 10% by weight of the component with mono-ester bond.

A first group of quaternary ammonium compounds (QACs) suitable for use in the present invention is represented by formula (I):

image2

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wherein each R is independently selected from a C5-35 alkyl or alkenyl group; R1 represents a C1-4 alkyl, C2-4 alkenyl or a C1-4 hydroxyalkyl group; T is usually O-CO. (ie, an ester group attached to R by its carbon atom), but alternatively it can be CO-O (ie, an ester group attached to R by its oxygen atom); n is a number selected from 1 to 4; m is a number selected from l, 2, 0 3; and X "is an anionic counterion, such as a halide or alkyl sulfate, for example chloride or methyl sulfate. The diester variants of the formula I (ie, m = 2) are preferred and typically have mono- and tri-ester analogs associated with them Such materials are particularly suitable for use in the present invention.

Especially preferred agents are preparations which are rich in the triethanolammonium methylsulfate di-esters, mentioned on the other hand as "TEA cuats ester". Commercial examples include Stepan-texTM UL85, from Stepan, Prapagen ™ TQL, from Clairant, and Tetranyl ™ AHT-1, from Kao, (both hydrogenated tallow ester) of triethanolammonium methyl sulfate), AT-1 ([tallow ester] of triethanolammonium methyl sulfate), and L5 / 90 (palm [ester] of triethanolammonium methyl sulfate), both of Kao, and Rewoquat ™ WE15 (a triethanolammonium methyl sulfate di-ester containing fatty acyl moieties obtained from unsaturated fatty acids of C10-C20 and Cia-Cis), from Witco Corporation.

Also suitable are soft quaternary ammonium active compounds such as Stepantex VK90, Stepantex VT90, SP88 (from Stepan), Prapagen TQ (from Clairant), Dehyquart AU-57 (from Cognis), Rewoquat WE18 (from Degussa) and Tetranyl Ll9o P, Tetranyl L190 SP and Tetranyl L190 S (all of them from Kao).

A second group of QACs suitable for use in the invention is represented by formula (II):

(R1) sN + - (CH2) or-CH-TR2 X- (II)

ch2tr2

wherein each R1 group is independently selected from C1-4 alkyl or hydroxyalkyl groups, or C2-4 alkenyl; and wherein each R2 group is independently selected from Ca-28 alkyl or alkenyl groups; and in which n, T and X- are as defined above.

Preferred materials of this second group include 1,2- £) / 's [sebooyloxy] -3-trimethylammonium propane chloride, 1,2-b /' s chloride [hydrogenated sebooyloxy] -3-trimethylammonium propane chloride, 1,2- £) / 's [oleoyloxy] -3-trimethylammonium propane and 1,2- £ chloride) /' s [stearoyloxy] -3-trimethylammonium propane. Such materials are described in US Pat. 4,137,180 (Lever Brothers). Preferably, these materials also comprise an amount of the corresponding monoster.

A third group of QACs suitable for use in the invention is represented by formula (III):

(RVN + - [(CH2) n-T-R2] 2X- (III)

wherein each R1 group is independently selected from C1-4 alkyl or C2-4 alkenyl groups; and wherein each R2 group is independently selected from C8-28 alkyl or alkenyl groups; and in which n, T and X- are as defined above. Preferred materials of this third group include 1,2- £) / 's (sebooyloxyethyl) -dimethylammonium chloride, partially hydrogenated and hydrogenated versions thereof.

The iodine index of the quaternary ammonium fabric conditioning material is preferably from 0 to 80, more preferably from 0 to 60, and most preferably from 0 to 45. The iodine index can be chosen as appropriate. Essentially, saturated compositions having an iodine content of from 0 to 5, preferably from 0 to 1, can be used in the compositions of the invention. Such materials are known as "hydrogenated" quaternary ammonium compounds.

An additional preferred range of iodine indices is from 20 to 60, preferably 25 to 50, more preferably from 30 to 45. A material of this type is a "soft" triethanolamine quaternary ammonium compound, preferably triethanolamine di-alkyl ester methylsulfate. . Said triethanolamine quaternary ammonium compound with ester bond comprises unsaturated fatty chains.

The iodine index as used in the context herein refers to the measurement of the degree of unsaturation present in a material by an NMR spectroscopy procedure, as described in Anal. Chem., Vol. 34, p. 1136, (1962), by Johnson and Shoolery.

An additional type of softening compound is a non-ester quaternary ammonium material represented by formula (IV):

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R1

(IV) R1 ------ N + ----- R2 X '

R2

wherein each R1 group is independently selected from C1-4 alkyl or hydroxyalkyl or C2-4 alkenyl groups; The R2 group is independently selected from C8-28 alkyl or alkenyl groups and X- is as defined above.

Oily sugar derivatives

Compositions for use in the invention may contain a non-cationic softening material, which is preferably an oily sugar derivative. An oily sugar derivative is a liquid or soft solid derivative of a cyclic polyol (CPE) or a reduced saccharide (RSE), said derivative resulting from the esterification or etherification of 35 to 100% of the hydroxyl groups in said polyol or in said taken out. The derivative has two or more ester or ether groups independently attached to a C8-C22 alkyl or alkenyl chain.

Advantageously, the CPE or RSE does not have any substantially crystalline character at 20 ° C. Instead, it is preferably in a liquid or soft solid state, as defined in the present invention, at 20 ° C.

Liquid or soft solid CPE or CSR (as defined below in the present invention) suitable for use in the present invention, are the result of esterification or etherification of 35 to 100% of the hydroxyl groups of the cyclic polyol or of the Reduced start-up with groups such as CPE or CSR have the required soft liquid or solid state. These groups typically contain unsaturated, branched or mixed chain lengths.

Typically, the CPE or CSR have 3 or more ester or ether groups or mixtures thereof, for example 3 to 8, especially 3 to 5. It is preferred that two or more of the ester or ether groups of the CPE or CSR are independently of each other attached to a C8 to C22 alkyl or alkenyl chain. The C8 to C22 alkyl or alkenyl groups may be branched or linear carbon chains.

Preferably, 35 to 85% of the hydroxyl groups, most preferably 40-80%, even more preferably 45-75%, such as 45-70%, are esterified or etherified.

Preferably, the CPE or RSE contains at least 35% tri-esters or higher, for example at least 40%.

The CPE or RSE has at least one of the chains independently linked to the ester or ether groups that have at least one unsaturated bond. This provides an economical way to make the CPE or RSE a soft liquid or solid. It is preferred that predominantly unsaturated fatty chains, obtained from, for example, rapeseed oil, cottonseed oil, soybean oil, oleic, tallow, palmitoleic, linoleic, erucic or other sources of unsaturated vegetable fatty acids, are attached to the ester / ether groups.

These chains are referred to below as the ester or ether chains (of the CPE or RSE).

The ester or ether chains of the CPE or RSE are preferably predominantly unsaturated. Preferred CPEs or CSRs include sucrose tetraseboate, sucrose tetrarapeate, sucrose tetraoleate, sucrose tetrameters of soybean oil or cottonseed oil, cellobiose tetraoleate, sucrose trioletate, sucrose trirapeate, sucrose pentaoleate , sucrose pentarapeate, sucrose hexaoleate, sucrose hexarapeate, triesters, pentaesteres and sucrose hexaesters of soybean oil or cottonseed oil, glucose trioleate, glucose tetraoleate, xylose trioleate, or tetra-, tri -, penta- or hexa-esters of sucrose with any mixture of predominantly unsaturated fatty acid chains. The most preferred CPE or CSR are those with monounsaturated fatty acid chains, that is, those in which any polyunsaturation has been removed by partial hydrogenation. However, some CPE or CSR based on polyunsaturated fatty acid chains, for example sucrose tetralinoleate, can be used provided that most of the polyunsaturation has been removed by partial hydrogenation.

The most highly preferred liquid CPEs or CSRs are any of the above, but those in which polyunsaturation has been removed by partial hydrogenation. Preferably 40% or more of the fatty acid chains contain an unsaturated bond, more preferably 50% or more, most preferably 60% or more. In most cases 65% to 100%, for example 65% to 95% contain an unsaturated bond.

CPEs are preferred for use with the present invention. Inositol is a preferred example of a cyclic polyol. Inositol derivatives are especially preferred.

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In the context of the present invention, the term polyol dclic encompasses all forms of saccharides. Actually the sacks are especially preferred for use with the present invention. Examples of preferred saccharides to be obtained for CPE or CSR are monosaccharides and disacarids.

Examples of monosaccharides include xylose, arabinose, galactose, fructose, sorbose and glucose. Glucose is especially preferred. Examples of disacarids include maltose, lactose, cellobiose and sucrose. Sucrose is especially preferred. An example of a reduced saccharide is sorbitan.

Liquid CPE or soft solids can be prepared by procedures well known to those skilled in the art. These include acylation of the cyclic polyol or reduced saccharide with an acid chloride; trans-esterification of the dichloric polyol or fatty acid esters of reduced saccharides using a variety of catalysts; the acylation of the cyclic polyol or the reduced saccharide with an acid anhydride and the acylation of the cyclic polyol or the reduced saccharide with a fatty acid. See, for example, US Pat. 4 386 213 and UA 14416/88 (both from P&G).

It is preferred that the CPE or CSR have 3 or more, preferably 4 or more ester or ether groups. If the CPE is a disabled person, it is preferred that the disabled person has 3 or more ester or ether groups. Particularly preferred cPe are esters with an esterification degree of 3 to 5, for example, tri-, tetra- and penta-esters of sucrose.

In cases where the cyclic polyol is a reducing sugar, it is advantageous that each ring of the CPE has an ester or ether group, preferably in the Ci position. Suitable examples of said compounds include methyl glucose derivatives.

Examples of suitable CPE include alkyl (poly) glucoside esters, in particular alkyl glucoside esters having a polymerization degree of 2.

The length of unsaturated (and saturated, if present) chains in the CPE or RSE is C8-C22, preferably C12-C22. It is possible to include one or more C1-C8 chains, however, these are less preferred.

Liquid or soft solid CPE or CSR that are suitable for use in the present invention are characterized as being materials having a solid: liquid ratio between 50:50 and 0: 100 at 20 ° C, determined by the relaxation time T2 by NMR, preferably between 43:57 and 0: 100, most preferably between 40:60 and 0: 100, such as, 20:80 and 0: 100. The relaxation time T2 determined by NMR is commonly used for the characterization of solid: liquid relationships in soft solid products such as fats and margarines. For the purpose of the present invention, any component of the signal with a T2 of less than 100 ps is considered to be a solid component and any component with a T2 S100 ps is considered to be a liquid component.

For CPE and RSE, the prefixes (for example, tetra and penta) only indicate the average degrees of esterification. The compounds exist as a mixture of materials ranging from the monoster to the fully esterified ester. It is the average degree of esterification that is used in the present invention to define the CPE and CSR.

The HLB of the CPE or RSE is typically between 1 and 3.

When present, the CPE or RSE is preferably present in the composition in an amount of 0.5-50% by weight, based on the total weight of the composition, more preferably 1-30% by weight, such as 2-25 %, for example 2-20%.

CPE and RSE for use in the compositions of the invention include sucrose tetraoleate, sucrose pentaerucate, sucrose tetraerucate and sucrose pentaoleate.

Co-softeners and fatty complexing agents

Co-softeners can be used. When used, these are typically present from 0.1 to 20% and particularly from 0.5 to 10%, based on the total weight of the composition. Preferred co-softeners include fatty esters, and fatty N-oxides. Fatty esters that can be used include fatty monoesters, such as glycerol monostearate, fatty sugar esters, such as those disclosed in WO 01/46361 (Unilever).

Compositions for use in the present invention may comprise a fatty complexing agent.

Especially suitable fatty complexing agents include fatty alcohols and fatty acids. Of these, fatty alcohols are the most preferred.

The fatty complexing material can be used to improve the viscosity profile of the composition.

Preferred fatty acids include hydrogenated tallow fatty acid (available under the trademark PristereneTM, from Uniquema). Preferred fatty alcohols include hydrogenated tallow alcohol (available under the trademarks Stenol ™ and Hydrenol ™, from Cognis, and Laurex ™ CS, from Allbritht and Wilson).

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The fatty complexing agent is preferably present in an amount greater than 0.3 to 5% by weight, based on the total weight of the composition. More preferably, the fatty component is present in an amount of from 0.4 to 4%. The weight ratio of the mono-ester component of the quaternary ammonium fabric softener material to the fatty complexing agent is preferably from 5: 1 to 1: 5, more preferably 4: 1 to 1: 4, most preferably 3: 1 to 1: 3, for example 2: 1 to 1: 2.

Nonionic Surfactant

The compositions for use in the present invention may further comprise a nonionic surfactant. Typically, these may be included for the purpose of stabilizing the compositions. These are particularly suitable for compositions comprising hydrogenated quaternary ammonium compounds.

Suitable non-ionic surfactants include addition products of ethylene oxide and / or propylene oxide with fatty alcohols, fatty acids and fatty amines. Any of the alkoxylated materials of the particular type described later in the present invention can be used as the non-ionic surfactant.

Suitable surfactants are substantially water soluble surfactants of the general formula:

R-Y- (C2H4O) 2-CH2-CH2-OH

wherein R is selected from the group consisting of alkyl and / or acyl hydrocarbyl groups of primary, secondary and branched chain (when Y = -C (O) O, R t of an acyl hydrocarbyl group); primary, secondary and branched chain alkenyl hydrocarbyl groups; and alkenyl-substituted hydrocarbyl phenolic groups of primary, secondary and branched chain with a chain length of from 8 to about 25, preferably 10 to 20, for example 14 to 18, carbon atoms.

In the general formula for the ethoxylated nonionic surfactant, Y is typically:

-O-, -C (O) O-, -C (O) N (R) - or -C (O) N (R) R-

in which R has the meaning given above or may be hydrogen; and Z is at least about 8, preferably at least about 10 or 11.

Preferably, the non-ionic surfactant has an HLB of from about 7 to about 20, more preferably from 10 to 18, for example 12 to 16. Genapol ™ C200 (Clairant) based on a coconut chain and 20 EO groups is an example of a suitable nonionic surfactant.

When present, the non-ionic surfactant is in an amount of from 0.01 to 10%, more preferably 0.1 to 5% by weight, based on the total weight of the composition.

Matting dyes

Optional shading dyes can be used. Preferred dyes are violet or blue. Suitable and preferred classes of dyes are set forth below. In addition, unsaturated quaternary ammonium compounds are subject to a certain degree of radical self-oxidation catalyzed by transition metal ions and / or UV light, with a consequent risk of tissue yellowing. The presence of a shading dye also reduces the risk of yellowing from this source.

Different shading dyes provide different levels of coloration. The proportion of tinting dye present in the compositions of the present invention depends, accordingly, on the type of tinting dye. Preferred general margins, suitable for the present invention, are from 0.00001 to 0.1% by weight, more preferably 0.0001 to 0.01% by weight, most preferably 0.0005 to 0.005% by weight, in Total composition weight.

Direct dyes

Direct dyes (also known as substantive dyes) are the kind of water soluble dyes that have an affinity for the fibers and are directly accepted. Direct violet and direct blue dyes are preferred.

Preferably, the dyes used are bis-azo or trs-azo dyes.

Most preferably, the direct dye is a direct violet of the following structures:

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image3

or

image4

in which

Ring D and E can independently be naphthyl or phenyl, as shown;

Ri is selected from: hydrogen and C1-C4 alkyl, preferably hydrogen;

R2 is selected from: hydrogen, C1-C4 alkyl, substituted or unsubstituted phenyl and substituted or unsubstituted naphthyl, preferably phenyl;

R3 and R4 are independently selected from: hydrogen, C1-C4 alkyl, preferably hydrogen or methyl;

X and Y are independently selected from: hydrogen, C1-C4 alkyl, and C1-C4 alkoxy; preferably the dye has X = methyl; and, Y = methoxy and n is 0.1 or 2, preferably 1 or 2.

Preferred dyes are 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, and direct violet 99, colorants containing bis can be used -azo copper, such as direct violet 66.

Benzidene-based dyes are less preferred.

Preferably, the direct dye is present from 0.00001% by weight to 0.0010% by weight of the formulation.

In another embodiment, the direct dye may be covalently bound to the photo bleach, for example as described in WO 2006/024612.

Acid dyes

Substantial acidic cotton dyes provide benefits to garments containing cotton. Preferred dyes and dye mixtures are blue or violet. Preferred acid dyes are:

(i) azine dyes, in which the dye is of the following core structure:

image5

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wherein Ra, Rb, Rc and Rd are selected from H, a branched or linear C1 to C7 alkyl chain, benzyl, a phenyl, and a naphthyl;

the dye is substituted with at least one SO3- or -COO- group; ring B does not carry a negatively charged group or salt thereof; and ring A may also be substituted to form a naphthyl;

the dye is optionally substituted by groups selected from amine, methyl, ethyl, hydroxyl, methoxy, ethoxy, phenoxy, Cl, Br, I, F, and NO2;

Preferred azine dyes are: acid blue 98, acid violet 50, and acid blue 59, more preferably acid violet 50 and acid blue 98.

Other preferred non-azine acid dyes are acid violet 17, acid black 1 and acid blue 29.

Preferably, the acid dye is present from 0.0005% by weight to 0.01% by weight of the formulation. Hydrophobic dyes

The composition for use in the invention may comprise one or more hydrophobic dyes selected from benzodifurans, methine, triphenylmethanes, naphthalimides, pyrazole, naphthoquinone, anthraquinone and mono-azo dyes or di-azo chromophores. Hydrophobic dyes are dyes that do not contain any solubilizing group of charged water. Hydrophobic dyes may be selected from the groups of dispersed and solvent dyes. Blue and violet anthraquinone and mono-azo dye are preferred.

Preferred dyes include solvent violet 13, dispersed violet 27, dispersed violet 26, dispersed violet 28, dispersed violet 63 and dispersed violet 77.

Preferably, the hydrophobic dye is present from 0.0001% by weight to 0.005% by weight of the formulation. Basic dyes

Basic dyes are organic dyes that carry a positive net charge. They are deposited on cotton. They are particularly useful for use in compositions containing predominantly cationic surfactants. The dyes can be selected from the basic violet and basic blue dyes listed in the Color Index International.

Preferred examples include triarylmethane basic dyes, methane basic dyes, anthraquinone basic dyes, 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.

Reactive dyes

Reactive dyes are dyes that contain an organic group capable of reacting with cellulose and binding the dye to cellulose with a covalent bond. They are deposited on cotton.

Preferably, the reactive group is hydrolyzed or the reactive group of the dyes has been reacted with an organic species such as a polymer, in order to bind the dye to this species. The dyes can be selected from the reactive violet and reactive blue dyes listed in the Color Index International.

Preferred examples include reactive blue 19, reactive blue 163, reactive blue 182 and reactive blue 96.

Coloring conjugates

The dye conjugates are formed by the union of direct dyes, acidic or basic to polymers or particles by physical forces.

Depending on the choice of polymer or particle, they are deposited on cotton or synthetics. A description is given in WO 2006/055787. They are not preferred.

Particularly preferred dyes are: 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 99, acid blue 98, acid violet 50, acid blue 59, acid violet 17, acid black 1, acid blue 29, solvent violet 13, dispersed violet 27, dispersed violet 26, dispersed violet 28, dispersed violet 63, dispersed violet 77 and mixtures thereof .

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Additional Optional Ingredients

Compositions for use in the invention may contain one or more other ingredients. Such ingredients include additional preservatives (eg, bactericides), pH buffering agents, perfume bonds, hydrotropes, anti-redeposition agents, dirt release agents, polyelectrolytes, anti-shrinkage agents, anti-wrinkle agents, anti-oxidants , sunscreens, anti-corrosion agents, folding dispensing agents, anti-static agents, ironing aids, silicones, antifoams, dyes, nacrents and / or opacifiers, oils / natural extracts, treatment aids, for example, electrolytes, agents Hygiene, for example, antibactericides and antifungal agents, thickeners and beneficial agents for the skin.

Fabric softener compositions may also comprise viscosity modifiers. Suitable viscosity modifiers are disclosed, for example, in WO Patents 02/081611, USA. 2004/0214736, USA 6827795, EP 0501714, USA 2003/0104964, EP 0385749 and EP 331237.

Product form

The compositions for use in the present invention are preferably softening compositions added for rinsing.

The compositions have a pH range of from about 2.6 to 6, preferably from about 2.5 to 4.5, most preferably from about 2.5 to 2.8. Compositions for use in the invention may also contain pH modifiers, such as chlortndric acid or lactic acid.

A composition for use in the invention is preferably in liquid form. The composition may be a concentrate to be diluted in a solvent, including water, before use. Likewise, the composition may be a ready-to-use composition (in use). Preferably, the composition is supplied in the form of a ready-to-use liquid comprising an aqueous phase. The aqueous phase may comprise water soluble species, such as mineral salts or short chain (C1-4) alcohols.

The composition is preferably for use in the rinse cycle of a domestic textile washing operation, in which it can be added directly in an undiluted state to a washing machine, for example, through a dispenser drawer or, for a top-loading washing machine, directly inside the drum. As an alternative, it can be diluted before use. Likewise, the compositions can be used in a domestic handwashing laundry operation. Equally. It is also possible for the compositions of the present invention to be used in industrial laundry operations, for example, as a finishing agent for softening new clothes before being sold to consumers.

Preparation

The compositions used in the invention can be prepared by any method suitable for the preparation of dispersed emulsified systems. One process involves the formation of a molten pre-mixture of the active materials in water at an elevated temperature, the addition of additional water to obtain the desired active compound concentration and then cooling to room temperature. When desired, some minor ingredients such as electrolytes, coloring agents, etc. can be post-dosed. A second process involves the formation of the product by phase inversion of a hydrocarbon emulsion in water, in which the cationic material is either part of the hydrocarbon phase, or is added as a separate predispersion. This process is advantageous, since this provides very finely divided hydrocarbon particles in the final product. In an alternative procedure, the active encapsulated phase change compound can be post-dosed in the form of an aqueous slurry.

Examples

The embodiments of the invention will be illustrated below by the following non-limiting examples. Other modifications will be obvious to the person skilled in the art.

The examples of the invention are represented by a number. Comparative examples are represented by a letter.

Unless stated otherwise, the amounts of components are expressed as a percentage of the total weight of the composition.

Example 1: - Preparation and composition of Tissue Conditioner 1, for use according to the invention. and Comparative Example A

Composition 1 and Comparative Example A were conditioners of diluted liquid tissues, comprising 4.5% of softening active compound. The compositions are shown in Table 1.

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Table 1: Composition of Tissue Conditioner 1 (% by weight, based on 100% active ingredients)

 Ingredient

 Commercial name Supplier 1 A

 Softening active compound

 TEP-88L1 FXG 5.8 5.8

 Fatty alcohol

 Ketostelic Alcohol - 0.2 0.2

 Acid

 1 M HCl - 0.009 0.009

 Antifoam3

 Wacker SRE Wacker 0.005 0.005

 Colorant

 Liquitint Milliken dye 0.002 0.002

 Salt

 CaCl2 (10% in sol.) - 0.00125 0.00125

 Fragrance

 - - 0.8 0.8

 Encapsulated perfume

 - - 0.25 0.25

 Encapsulated phase change material

 Lurapret TXPMC28 - 5.0 -

 Water and minor compounds2

 - - Up to 100% Up to 100%

 1 Quat of soft palm-based ASD 2 Pearly, preservative, sequestrant, etc. 3 Based on 100% activity

Example 2: - Garment treatment using Composition 1 and Comparative Example A

Rehearsal clothing

Black pants and white blouses were used as test garments. The garments for the study were tailor-made for each participant to ensure the consistency of the design of the garment and its fit for all participants.

All garments were first washed in commercially available washing powder in an automatic washing machine and air dried. The washing conditions were as follows.

Treatment with Composition 1 and Comparative Example A

The garments were introduced in an automatic washing machine and the rinse cycle was selected. 42 g of the fabric conditioner was added to the dispensing drawer of the washing machine. Next, the clothes were air dried.

Test panel procedure and conditions

A trial regime without a blind mark was adopted. The rehearsal was carried out during a hot and humid period in Bangkok and involved 30 participants who wore the garments all day. Each participant wore the garments treated with the Comparative Example and Composition 1 on separate days. Control clothing (only washed) was also included. Participants were not asked to compare a set of clothing with each other. They performed approximately their normal routine of trips to and from work, with their meals outdoors, and work indoors in offices, with air conditioning at other times. The climate was monitored during the experiment, finding that it was relatively stable, with an average of about 32 ° C / 50% relative humidity at noon.

Participants recorded the smell of fresh as well as the intensity levels of perfume in the episode of appearance of perspiration.

Statistical analysis was carried out using a repeated measurement model adapted to the data; "Repeated" means that each participant in the study was measured several times. Such a model incorporates time and also reflects that there are several layers of random influences present during data collection. These layers are: the variation “within the participant” over time, the variation “between participants” due to the different characteristics of the participant and treatment and the total external random influences and measurement errors.

To describe the three sources of variability, a linear effects model was used. This model consists of a classical linear model (function in part of the controlled and observed influences) and a random effects model. Only after the adjustment of both, was the variance of the error determined. Consequently, the utility of the model is a functional description of the population trend and, for each individual, an adjustment of the deviation from this trend.

Statistical package R (version 3.1-94) was used for repeated measurement and linear mixed effect models.

The p values shown below indicate 95% confidence. The confidence for the intensity of the perfume was generated from the beginning of the data of the episode of perspiration.

10 Example 3: - Fresh smell and intensity of perfume during perspiration imparted by garments treated with Composition 1 and Comparative Example A

Table 2. Intensity levels of fresh smell and perfume at the beginning of perspiration for garments treated with Comparative Example A and Composition A

 Intensity level

 Treatment

 Smell of fresh Perfume

 TO

 2.53 -2.20

 one

 14.38 14.72

 Trust

 P <0.05 P <0.005

15 It will be noted that garments treated in accordance with the invention confer an enhanced effect from perfume capsules.

Claims (12)

5 10 fifteen twenty 25 30 1. Use of an active encapsulated phase change compound, which has a phase transition temperature of from 24 to 39 ° C, to improve the beneficial effect of an additional encapsulated volatile beneficial agent in the presence of a beneficial agent additional non-encapsulated volatil, in which the beneficial volatil encapsulated agent is selected from perfume, insect repellent, aromatherapy oil, sensory stimulants such as menthol and an essential oil, and in which the active phase change compound is paraffin wax comprising n-octadecane. 2. Use according to claim 1, wherein the non-encapsulated volatile beneficial agent is selected from a perfume, insect repellent, aromatherapy oil, sensory stimulants such as menthol and an essential oil. 3. Use according to any preceding claim, wherein the active phase change compound comprises hydrocarbon materials comprising a linear or branched alkyl chain comprising an average of from 12 to 50 carbon atoms per molecule. 4. Use according to the claim of any preceding claim, wherein the active phase change compound comprises a mixture of mineral oil and petrolatum. 5. Use according to any preceding claim, wherein the encapsulated phase change material has a particle size of from 10 nm to 1000 micrometers. 6. Use according to any preceding claim, wherein the encapsulated phase change material and the additional encapsulated volatile beneficial agent are components of a lavender composition, which further comprises an additional non-encapsulated volatile beneficial agent. 7. Use according to any preceding claim, wherein the lavender composition is a tissue conditioner comprising a fabric softening agent. 8. Use according to claim 7, wherein the fabric softening agent is selected from an oily sugar derivative, a cationic fabric softening compound and mixture thereof. 9. Use according to claim 8, wherein the cationic fabric softening agent is a quaternary ammonium compound having at least two C12-28 groups connected to the nitrogen head group, which may independently be alkyl groups or alkenyl, preferably being connected to the nitrogen head group via an ester bond. 10. Use according to any one of claims 6 to 9, wherein the additional non-encapsulated volatile beneficial agent is the same as the encapsulated volatile beneficial agent. 11. Use according to any one of claims 6 to 10, wherein the phase change material is present in an amount of from 0.05 to 50% by weight by weight of the composition. 12. Use according to any one of claims 6 to 11, wherein the total amount of volatile beneficial agent is from 0.01 to 10% by weight, based on the total weight of the composition.