Core-shell microcapsules

Abstract

The present invention relates to a process for preparing a core-shell microcapsule comprising the steps of: (a) mixing a hydrophobic phase comprising a hydrophobic material, preferably a perfume oil or a flavor oil, and an aqueous phase comprising a first polyelectrolyte and, optionally, a second polyelectrolyte having an opposite net charge to the first polyelectrolyte, to form an oil-in-water emulsion, (b) adding an enzyme, preferably an oxidoreductase to the mixture of step (a), optionally, adding a or said second polyelectrolyte having an opposite net charge to the first polyelectrolyte, and (c) providing conditions sufficient to induce crosslinking to the mixture of step (b) by the oxidoreductase to form a core-shell microcapsule as well as to the microcapsules obtained by said process their use and consumer products thereof.

Description

[0001] CORE-SHELL MICROCAPSULES

[0002] Field of the invention

[0003] The present invention relates to a process for preparing a core-shell microcapsule comprising the steps of: (a) mixing a hydrophobic phase comprising a hydrophobic material, preferably a perfume oil or a flavor oil, and an aqueous phase comprising a first polyelectrolyte and, optionally, a second polyelectrolyte having an opposite net charge to the first polyelectrolyte, to form an oil-in-water emulsion, (b) adding an enzyme, preferably an oxidoreductase, to the mixture of step (a), optionally, adding a or said second polyelectrolyte having an opposite net charge to the first polyelectrolyte, and (c) providing conditions sufficient to induce crosslinking by the enzyme, preferably the oxidoreductase, to form a core-shell microcapsule as well as to the microcapsules, their use and consumer products thereof.

[0004] Background of the invention

[0005] One of the problems faced by the perfumery industry lies in the relatively rapid loss of olfactive benefit provided by odoriferous compounds due to their volatility, particularly that of “topnotes”. In order to tailor the release rates of volatiles, delivery systems such as microcapsules containing active ingredients, for example a perfume, are needed to protect and later release the core payload when triggered. A key requirement from the industry regarding these systems is to survive suspension in challenging bases without physically dissociating or degrading. This is referred to as chemical stability for the delivery system. For instance, fragranced personal and household cleansers containing high levels of aggressive surfactant detergents are very challenging for the stability of microcapsules. High levels of surfactants also increase the speed of diffusion of actives out of the microcapsules. This leads to leakage of the actives during storage and a reduced impact when the microcapsules are triggered to release. In addition, the mechanical stability of microcapsules can be compromised by physical forces, such as crushing, or other methods that compromise the integrity of the microcapsules.

[0006] In addition to the performance in terms of stability and olfactive performance, the consumer demand for eco-friendly delivery systems is more and more important and is driving the development of new delivery systems. There is therefore still a need to provide new microcapsules using more eco-friendly materials and reducing overall environmental impact, while not compromising on the performance of the microcapsules, in particular in terms of stability in a challenging medium such as a consumer product base, as well as in delivering a good performance in terms of active ingredient delivery, e.g. olfactive performance in the case of perfuming ingredients.

[0007] Summary of the invention

[0008] A first object of the invention is a process for preparing a core-shell microcapsule comprising the steps of: (a) mixing a hydrophobic phase comprising a hydrophobic material, preferably a perfume oil or a flavor oil, and an aqueous phase comprising a first polyelectrolyte and, optionally, a second polyelectrolyte having an opposite net charge to the first polyelectrolyte, to form an oil-in-water emulsion, (b) adding an enzyme, preferably an oxidoreductase to the mixture of step (a), optionally, adding a or said second polyelectrolyte having an opposite net charge to the first polyelectrolyte, and (c) providing conditions sufficient to induce crosslinking to the mixture of step (b) by the enzyme, preferably the oxidoreductase, to form a core-shell microcapsule.

[0009] A second object of the invention is a core-shell microcapsule comprising an oil-based core comprising a hydrophobic material, preferably a perfume or a flavor oil, and a polymeric shell comprising a crosslinked first polyelectrolyte and, a second polyelectrolyte having an opposite net charge to the first polyelectrolyte, wherein the crosslinking of the first and the second polyelectrolyte is at least partly achieved by an enzyme, preferably an oxidoreductase, optionally, wherein the polymeric shell further comprises polyurea, polyurethane, polyamide, polyester, polyimine, poly(meth)acrylate, polysiloxane, or mixtures thereof.

[0010] A third object of the invention is the use of a core-shell microcapsule according to the second aspect of the invention to enhance, prolong, modify the olfactive effect of a perfume oil in a consumer product. A fourth aspect of the invention is a consumer product comprising a consumer base and a core-shell microcapsule according to the second aspect of the invention, wherein the consumer product is preferably in the form of a home-care product or a personal care product.

[0011] Detailed description of the invention

[0012] Unless stated otherwise, percentages (%) are meant to designate a percentage by weight of a composition.

[0013] By “hydrophobic material”, it is meant any hydrophobic material - single material or a mixture of materials - which forms a two-phase dispersion when mixed with water.

[0014] By “ingredient”, it is meant a single compound or a combination of ingredients.

[0015] By “perfume oil” or “flavour oil”, it is meant a single perfuming or flavouring compound or a mixture of several perfuming or flavouring compounds.

[0016] By “consumer product” or “end-product” it is meant a manufactured product ready to be distributed, sold and used by a consumer.

[0017] A “microcapsule”, or the similar, in the present invention it is meant that core-shell microcapsules have a particle size distribution in the micron range (e.g. a mean diameter (Dv(50) comprised between about 1 and 3000 microns) and comprise an external polymeric-based shell and an internal hydrophobic phase enclosed by the external shell. According to an embodiment, microcapsules have a mean diameter comprised between 1 and 500 microns, preferably from 2 and 200 microns, more preferably between 4 and 100 microns, even more preferably between 4 and 50 microns.

[0018] By “microcapsule slurry”, it is meant microcapsule(s) that is (are) dispersed in a liquid. According to an embodiment, the slurry is an aqueous slurry, i.e. the microcapsule(s) is (are) dispersed in an aqueous phase.

[0019] Microns, micrometers and pm are used herein interchangeably.

[0020] Process for preparing a core-shell microcapsule

[0021] In a first aspect, the present invention relates to a process for preparing a core-shell microcapsule comprising, preferably consisting of, the steps of:

[0022] (a) mixing a hydrophobic phase comprising a hydrophobic material, preferably a perfume oil or a flavor oil, and an aqueous phase comprising a first polyelectrolyte and, optionally, a second polyelectrolyte having an opposite net charge to the first polyelectrolyte, to form an oil-in-water emulsion, (b) adding an enzyme, preferably an oxidoreductase to the mixture of step (a), optionally, adding a or said second polyelectrolyte having an opposite net charge to the first polyelectrolyte,

[0023] (c) providing conditions sufficient to induce crosslinking to the mixture of step (b) by the enzyme, preferably the oxidoreductase, to form a core-shell microcapsule.

[0024] According to one embodiment, the process for preparing a core-shell microcapsule as described above is carried out sequentially, first step a), then step b) and lastly step c).

[0025] Hydrophobic Material

[0026] The hydrophobic material according to the invention can be “inert” material like solvents or active ingredients.

[0027] When the hydrophobic material is an active ingredient, it is preferably chosen from the group consisting of flavors, flavor ingredients, perfumes, perfume ingredients, cosmetics, plant protection agents, pest control agents, biocide actives, dyes, pigments, nutraceuticals and mixtures thereof.

[0028] According to a particular embodiment, the hydrophobic material is preferably chosen from the group consisting of flavors, flavor ingredients, perfumes, perfume ingredients and cosmetics, or mixtures thereof.

[0029] According to a particular embodiment, the hydrophobic material comprises a mixture of a perfume with another ingredient selected from the group consisting of cosmetics, plant protection agents, pest control agents and biocide actives.

[0030] According to an embodiment, the hydrophobic material comprises a phase change material (PCM).

[0031] According to a particular embodiment, the hydrophobic material comprises a mixture of biocide actives with another ingredient selected from the group consisting of perfumes, cosmetics, plant protection agents, pest control agents.

[0032] According to a particular embodiment, the hydrophobic material comprises a mixture of pest control agents with another ingredient selected from the group consisting of perfumes, cosmetics, biocide actives. According to a particular embodiment, the hydrophobic material comprises a perfume. According to a particular embodiment, the hydrophobic material consists of a perfume. According to a particular embodiment, the hydrophobic material consists of biocide actives.

[0033] According to a particular embodiment, the hydrophobic material consists of pest control agents.

[0034] By “perfume” (or also “perfume oil”) what is meant here is an ingredient or a composition that is a liquid at about 20°C. According to any one of the above embodiments said perfume oil can be a perfuming ingredient alone or a mixture of ingredients in the form of a perfuming composition. As a “perfuming ingredient” it is meant here a compound, which is used for the primary purpose of conferring or modulating an odor. In other words, such an ingredient, to be considered as being a perfuming one, must be recognized by a person skilled in the art as being able to at least impart or modify in a positive or pleasant way the odor of a composition, and not just as having an odor. For the purpose of the present invention, perfume oil also includes a combination of perfuming ingredients with substances which together improve, enhance or modify the delivery of the perfuming ingredients, such as perfume precursors, modulators, emulsions or dispersions, as well as combinations which impart an additional benefit beyond that of modifying or imparting an odor, such as long-lastingness, blooming, malodor counteraction, antimicrobial effect, microbial stability, pest control.

[0035] The nature and type of the perfuming ingredients present in the oil phase do not warrant a more detailed description here, which in any case would not be exhaustive, the skilled person being able to select them on the basis of its general knowledge and according to intended use or application and the desired organoleptic effect. In general terms, these perfuming ingredients belong to chemical classes as varied as alcohols, aldehydes, ketones, esters, ethers, acetates, nitriles, terpenoids, nitrogenous or sulfurous heterocyclic compounds and essential oils (for example Thyme oil), and said perfuming co-ingredients can be of natural or synthetic origin. Many of these co-ingredients are in any case listed in reference texts such as the book by S. Arctander, Perfume and Flavor Chemicals, 1969, Montclair, New Jersey, USA, or its more recent versions, or in other works of a similar nature, as well as in the abundant patent literature in the field of perfumery.

[0036] In particular one may cite perfuming ingredients which are commonly used in perfume formulations, such as: - Aldehydic ingredients: decanal, dodecanal, 2-methyl-undecanal, 10-undecenal, octanal, nonanal and / or nonenal;

[0037] - Aromatic-herbal ingredients: eucalyptus oil, camphor, eucalyptol, 5- methyltricyclo[6.2.1.02’7]undecan-4-one, 1-methoxy-3-hexanethiol, 2-ethyl-4,4- dimethyl-1,3-oxathiane, 2,2,7 / 8,9 / 10-tetramethylspiro[5.5]undec-8-en-1-one, menthol and / or alpha-pinene;

[0038] Balsamic ingredients: coumarin, ethylvanillin and / or vanillin;

[0039] Citrus ingredients: dihydromyrcenol, citral, orange oil, linalyl acetate, citronellyl nitrile, orange terpenes, limonene, 1-p-menthen-8-yl acetate and / or 1,4(8)-p-menthadiene; Floral ingredients: methyl dihydrojasmonate, linalool, citronellol, phenylethanol, 3-(4- tert-butylphenyl)-2-methylpropanal, hexylcinnamic aldehyde, benzyl acetate, benzyl salicylate, tetrahydro-2-isobutyl-4-methyl-4(2H)-pyranol, beta ionone, methyl 2- (methylamino)benzoate, (E)-3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2- one, (1E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-1-penten-3-one, 1-(2,6,6-trimethyl-1,3- cyclohexadien-1-yl)-2-buten-1-one, (2E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-2- buten-1-one, (2E)-1-[2,6,6-trimethyl-3-cyclohexen-1-yl]-2-buten-1-one, (2E)-1 -(2,6,6- trimethyl-1-cyclohexen-1-yl)-2-buten-1-one, 3-(3,3 / 1,1-dimethyl-5-indanyl)propanal, 2,5-dimethyl-2-indanmethanol, 2, 6, 6-trimethyl-3-cyclohexene-1 -carboxylate, 3-(4,4- dimethyl-1-cyclohexen-1-yl)propanal, hexyl salicylate, 3,7-dimethyl-1,6-nonadien-3-ol, 3-(4-isopropylphenyl)-2-methylpropanal, verdyl acetate, geraniol, p-menth-1-en-8-ol, 4-(1,1-dimethylethyl)-1-cyclohexyle acetate, 1,1-dimethyl-2-phenylethyl acetate, 4- cyclohexyl-2-methyl-2-butanol, amyl salicylate , high cis methyl dihydrojasmonate, 3- methyl-5-phenyl-1 -pentanol, verdyl proprionate, geranyl acetate, tetrahydro linalool, cis-7-p-menthanol, propyl (S)-2-(1,1-dimethylpropoxy)propanoate, 2- methoxynaphthalene, 2, 2, 2-trichloro-1 -phenylethyl acetate, 4 / 3-(4-hydroxy-4- methylpentyl)-3-cyclohexene-1-carbaldehyde, amylcinnamic aldehyde, 8-decen-5- olide, 4-phenyl-2-butanone, isononyle acetate, 4-(1,1-dimethylethyl)-1 -cyclohexyl acetate, verdyl isobutyrate and / or mixture of methylionones isomers;

[0040] Fruity ingredients: gamma-undecalactone, 2,2,5-trimethyl-5-pentylcyclopentanone, 2- methyl-4-propyl-1,3-oxathiane, 4-decanolide, ethyl 2-methyl-pentanoate, hexyl acetate, ethyl 2-methylbutanoate, gamma-nonalactone, allyl heptanoate, 2- phenoxyethyl isobutyrate, ethyl 2-methyl-1,3-dioxolane-2-acetate, diethyl 1,4- cyclohexanedicarboxylate, 3-methyl-2-hexen-1-yl acetate, 1-[3,3- dimethylcyclohexyl]ethyl [3-ethyl-2-oxiranyl]acetate and / or diethyl 1 ,4-cyclohexane dicarboxylate;

[0041] Green ingredients: 2-methyl-3-hexanone (E)-oxime, 2,4-dimethyl-3-cyclohexene-1- carbaldehyde, 2-tert-butyl-1 -cyclohexyl acetate, styrallyl acetate, allyl (2- methylbutoxy)acetate, 4-methyl-3-decen-5-ol, diphenyl ether, (Z)-3-hexen-1-ol and / or 1 -(5,5-dimethyl-1 -cyclohexen-1 -yl)-4-penten-1 -one;

[0042] Musk ingredients: 1,4-dioxa-5,17-cycloheptadecanedione, (Z)-4-cyclopentadecen-1- one, 3-methylcyclopentadecanone, 1-oxa-12-cyclohexadecen-2-one, 1-oxa-13- cyclohexadecen-2-one, (9Z)-9-cycloheptadecen-1-one, 2-{(1S)-1-[(1 R)-3,3- dimethylcyclohexyl]ethoxy}-2-oxoethyl propionate, 3-methyl-5-cyclopentadecen-1- one, 4,6,6,7,8,8-hexamethyl-1,3,4,6,7,8-hexahydrocyclopenta[g]isochromene, (1S,1'R)-2-[1-(3',3'-dimethyl-T-cyclohexyl)ethoxy]-2-methylpropyl propanoate, oxacyclohexadecan-2-one and / or (1S,TR)-[1-(3',3'-dimethyl-T- cyclohexyl)ethoxycarbonyl]methyl propanoate;

[0043] - Woody ingredients: 1-[(1RS,6SR)-2,2,6-trimethylcyclohexyl]-3-hexanol, 3,3-dimethyl- 5-[(1R)-2,2,3-trimethyl-3-cyclopenten-1-yl]-4-penten-2-ol, 3,4'-dimethylspiro[oxirane- 2,9'-tricyclo[6.2.1.02’7]undec[4]ene, (l-ethoxyethoxy)cyclododecane, 2,2,9,11- tetramethylspiro[5.5]undec-8-en-1-yl acetate, 1 -(octahydro-2, 3,8, 8-tetramethyl-2- naphtalenyl)-1 -ethanone, patchouli oil, terpenes fractions of patchouli oil, Clearwood®, (TR,E)-2-ethyl-4-(2',2',3'-trimethyl-3'-cyclopenten-1'-yl)-2-buten-1-ol, 2-ethyl-4-(2,2,3- trimethyl-3-cyclopenten-1-yl)-2-buten-1-ol, methyl cedryl ketone, 5-(2,2,3-trimethyl-3- cyclopentenyl)-3-methylpentan-2-ol, 1-(2,3,8,8-tetramethyl-1,2,3,4,6,7,8,8a- octahydronaphthalen-2-yl)ethan-1-one and / or isobornyl acetate;

[0044] Other ingredients (e.g. amber, powdery spicy or watery): dodecahydro-3a,6,6,9a- tetramethyl-naphtho[2,1-b]furan and any of its stereoisomers, heliotropin, anisic aldehyde, eugenol, cinnamic aldehyde, clove oil, 3-(1,3-benzodioxol-5-yl)-2- methylpropanal, 7-methyl-2H-1 ,5-benzodioxepin-3(4H)-one, 2,5,5-trimethyl- 1,2,3,4,4a,5,6,7-octahydro-2-naphthalenol, 1-phenylvinyl acetate, 6-methyl-7-oxa-1- thia-4-azaspiro[4.4]nonane and / or 3-(3-isopropyl-1-phenyl)butanal.

[0045] It is also understood that said ingredients may also be compounds known to release in a controlled manner various types of perfuming compounds also known as properfume or profragrance. Non-limiting examples of suitable properfumes may include 4-(dodecylthio)-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-2-butanone, 4-(dodecylthio)-4-(2,6,6-trimethyl-1- cyclohexen-1-yl)-2-butanone, 3-(dodecylthio)-1-(2,6,6-trimethyl-3-cyclohexen-1-yl)-1-butanone, 2-(dodecylthio)octan-4-one, 2-phenylethyl oxo(phenyl)acetate, 3,7-dimethylocta-2,6-dien-1-yl oxo(phenyl)acetate, (Z)-hex-3-en-1-yl oxo(phenyl)acetate, 3,7-dimethyl-2,6-octadien-1-yl hexadecanoate, bis(3,7-dimethylocta-2,6-dien-1-yl) succinate, (2-((2-methylundec-1-en-1-yl)oxy)ethyl)benzene, 1-methoxy-4-(3-methyl-4-phenethoxybut-3-en-1-yl)benzene, (3-methyl-4-phenethoxybut-3-en-1-yl)benzene, 1-(((Z)-hex-3-en-1-yl)oxy)-2-methylundec-1-ene, (2-((2-methylundec-1-en-1-yl)oxy)ethoxy)benzene, 2-methyl-1-(octan-3-yloxy)undec-1 -ene, 1 -methoxy-4-(1 -phenethoxyprop-1 -en-2-yl)benzene, 1 -methyl-4-(1 -phenethoxyprop-1 -en-2-yl)benzene, 2-(1 -phenethoxyprop-1 -en-2-yl)naphthalene, (2-phenethoxyvinyl)benzene, 2-(1-((3,7-dimethyloct-6-en-1-yl)oxy)prop-1-en-2-yl)naphthalene, (2-((2-pentylcyclopentylidene)methoxy)ethyl)benzene, 4-allyl-2-methoxy-1-((2-methoxy-2-phenylvinyl)oxy)benzene, (2-((2-heptylcyclopentylidene)methoxy)ethyl)benzene, 1 -isopropyl-4-methyl-2-((2-pentylcyclopentylidene)methoxy)benzene, 2-methoxy-1-((2-pentylcyclopentylidene)methoxy)-4-propylbenzene, 3-methoxy-4-((2-methoxy-2-phenylvinyl)oxy)benzaldehyde, 4-((2-(hexyloxy)-2-phenylvinyl)oxy)-3-methoxybenzaldehyde or a mixture thereof.

[0046] The perfuming ingredients may be dissolved in a solvent of current use in the perfume industry. The solvent is preferably not an alcohol. Examples of such solvents are diethyl phthalate, isopropyl myristate, Abalyn® (rosin resins, available from Eastman), benzyl benzoate, ethyl citrate, triethyl citrate, limonene or other terpenes, or isoparaffins. Preferably, the solvent is very hydrophobic and highly sterically hindered, like for example Abalyn® or benzyl benzoate. Preferably the perfume comprises less than 30% of solvent. More preferably the perfume comprises less than 20% and even more preferably less than 10% of solvent, all these percentages being defined by weight relative to the total weight of the perfume. Most preferably, the perfume is essentially free of solvent.

[0047] Preferred perfuming ingredients are those having a high steric hindrance (bulky materials) and in particular those from one of the following groups:

[0048] Group 1: perfuming ingredients comprising a cyclohexane, cyclohexene, cyclohexanone or cyclohexenone ring substituted with at least one linear or branched C-| to C4alkyl or alkenyl substituent;

[0049] Group 2: perfuming ingredients comprising a cyclopentane, cyclopentene, cyclopentanone or cyclopentenone ring substituted with at least one linear or branched C4to C8alkyl or alkenyl substituent; Group 3: perfuming ingredients comprising a phenyl ring or perfuming ingredients comprising a cyclohexane, cyclohexene, cyclohexanone or cyclohexenone ring substituted with at least one linear or branched C5to C8alkyl or alkenyl substituent or with at least one phenyl substituent and optionally one or more linear or branched C-| to C3alkyl or alkenyl substituents;

[0050] Group 4: perfuming ingredients comprising at least two fused or linked C5and / or C6rings;

[0051] Group 5: perfuming ingredients comprising a camphor-like ring structure;

[0052] Group 6: perfuming ingredients comprising at least one C7to C2o ring structure;

[0053] Group 7: perfuming ingredients having a logP value above 3.5 and comprising at least one tert-butyl or at least one trichloromethyl substitutent;

[0054] Examples of ingredients from each of these groups are:

[0055] Group 1: 2,4-dimethyl-3-cyclohexene-1-carbaldehyde, isocyclocitral, menthone, isomenthone, methyl 2, 2-dimethyl-6-methylene-1 -cyclohexanecarboxylate, nerone, terpineol, dihydroterpineol, terpenyl acetate, dihydroterpenyl acetate, dipentene, eucalyptol, hexylate, rose oxide, (S)-1,8-p-menthadiene-7-ol, 1-p-menthene-4-ol, (1RS,3RS,4SR)-3-p-mentanyl acetate, (1R,2S,4R)-4,6,6-trimethyl-bicyclo[3,1,1]heptan-2-ol, tetrahydro-4-methyl-2-phenyl-2H-pyran, cyclohexyl acetate, cyclanol acetate, 1,4-cyclohexane diethyldicarboxylate, (3RS,3aRS,6SR,7ASR)-perhydro-3,6-dimethyl-benzo[B]furan-2-one, ((6R)-perhydro-3,6-dimethyl-benzo[B]furan-2-one, 2,4,6-trimethyl-4-phenyl-1 ,3-dioxane, 2,4,6-trimethyl-3-cyclohexene-1 -carbaldehyde;

[0056] Group 2: (E)-3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)-4-penten-2-ol, (1'R,E)-2-ethyl-4-(2',2',3'-trimethyl-3'-cyclopenten-T-yl)-2-buten-1-ol, (TR,E)-3,3-dimethyl-5-(2',2',3'-trimethyl-3'-cyclopenten-1'-yl)-4-penten-2-ol, 2-heptylcyclopentanone, methyl-cis-3-oxo-2-pentyl-1 -cyclopentane acetate, 2, 2, 5-trimethyl-5-pentyl-1 -cyclopentanone, 3,3-dimethyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)-4-penten-2-ol, 3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-pentanol;

[0057] Group 3: damascenes, 1-(5,5-dimethyl-1-cyclohexen-1-yl)-4-penten-1-one, (1'R)-2-[2-(4'-methyl-3'-cyclohexen-1 '-yl)propyl]cyclopentanone, alpha-ionone, beta-ionone, damascenone, mixture of 1-(5,5-dimethyl-1-cyclohexen-1-yl)-4-penten-1-one and 1-(3,3-dimethyl-1-cyclohexen-1-yl)-4-penten-1-one, 1-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2-buten-1-one, (1S,TR)-[1-(3',3'-Dimethyl-1'-cyclohexyl)ethoxycarbonyl]methyl propanoate, 2-tert-butyl-1 -cyclohexyl acetate, 1-(2,2,3,6-tetramethyl-cyclohexyl)-3-hexanol, trans-1-(2,2,6-trimethyl-1- cyclohexyl)-3-hexanol, (E)-3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, terpenyl isobutyrate, 4-(1 , 1 -dimethylethyl)-1 -cyclohexyl acetate, 8-methoxy-1-p-menthene, (1S,1'R)-2-[1-(3',3'-dimethyl-1'-cyclohexyl) ethoxy]-2-methylpropyl propanoate, para tertbutylcyclohexanone, menthenethiol, 1-methyl-4-(4-methyl-3-pentenyl)-3-cyclohexene-1-carbaldehyde, allyl cyclohexyl propionate, cyclohexyl salicylate, 2-methoxy-4-methylphenyl methyl carbonate, ethyl 2-methoxy-4-methylphenyl carbonate, 4-ethyl-2-methoxyphenyl methyl carbonate;

[0058] Group 4: Methyl cedryl ketone, a mixture of (1RS,2SR,6RS,7RS,8SR)-tricyclo[5.2.1.02’6]dec-3-en-8-yl 2-methylpropanoate and (1RS,2SR,6RS,7RS,8SR)-tricyclo[5.2.1.02’6]dec-4-en-8-yl 2-methylpropanoate, vetyverol, vetyverone, 1 -(octahydro-2,3, 8, 8-tetramethyl-2-naphtalenyl)-1 -ethanone, (5RS, 9RS,10SR)-2, 6,9,10-tetram ethyl- 1 -oxaspiro[4.5]deca-3,6-diene and the (5RS,9SR,10RS) isomer, 6-ethyl-2, 10, 10-trimethyl-1 -oxaspiro[4.5]deca-3,6-diene, 1,2,3,5,6,7-hexahydro-1,1,2,3,3-pentamethyl-4-indenone, a mixture of 3-(3,3-dimethyl-5-indanyl)propanal and 3-(1,1-dimethyl-5-indanyl)propanal, 3', 4-dimethyl-tricyclo[6.2.1 ,0(2,7)]undec-4-ene-9-spiro-2'-oxirane, 9 / 10-ethyldiene-3-oxatricyclo[6.2.1 ,0(2,7)]undecane, (perhydro-5,5,8A-trimethyl-2-naphthalenyl acetate, octalynol, (dodecahydro-3a,6,6,9a-tetramethyl-naphtho[2,1-b]furan, tricyclo[5.2.1.0(2,6)]dec-3-en-8-yl acetate and tricyclo[5.2.1.0(2,6)]dec-4-en-8-yl acetate as well as tricyclo[5.2.1.0(2,6)]dec-3-en-8-yl propanoate and tricyclo[5.2.1.0(2,6)]dec-4-en-8-yl propanoate, (+)-(1S,2S,3S)-2,6,6-trimethyl-bicyclo[3.1.1]heptane-3-spiro-2'-cyclohexen-4'-one, (-)-(1R,3S,7R,8R,10S,13R)-5,5,7,9,9,13-hexamethyl-4,6-dioxatetracyclo[6.5.1.0(1, 10).0(3, 7)]tetradecane, (1R,3S,5R,7R,8R,10S,13R)-5,7,9,9,13-pentamethyl-5-[1 -propen-1 -yl]-4,6-dioxatetracyclo[6.5.1.01’1°.03’7]tetradecane, (1R,3S,5S,7R,8R,10S,13R)-5,7,9,9,13-pentamethyl-5-[1-propen-1-yl]-4,6-dioxatetracyclo[6.5.1.01’1°.03’7]tetradecane, ora mixture thereof; (1R,3S,5R,7R,8R,10S,13R)-5,7,9,9,13-pentamethyl-5-[(1E)-1-propen-1-yl]-4,6-dioxatetracyclo[6.5.1.01’1°.03’7]tetradecane, (1R,3S,5S,7R,8R,10S,13R)-5,7,9,9,13-pentamethyl-5-[(1E)-1 -propen-1 -yl]-4,6-dioxatetracyclo[6.5.1.01’1°.03’7]tetradecane, or a mixture thereof; (1R,3S,5R,7R,8R,10S,13R)-5,7,9,9,13-pentamethyl-5-[1-propyn-1-yl]-4,6-dioxatetracyclo[6.5.1.01’1°.03’7]tetradecane, (1R,3S,5S,7R,8R,10S,13R)-5,7,9,9,13-pentamethyl-5-[1-propyn-1-yl]-4,6-dioxatetracyclo[6.5.1.01’1°.03’7]tetradecane or a mixture thereof; (1R,3S,5R,7R,8R,10S,13R)-5-methoxy-7,9,9,13-tetramethyl-4,6-dioxatetracyclo[6.5.1.01’1°.03’7]tetradecane, (1R,3S,5S,7R,8R,10S,13R)-5-methoxy-7,9,9,13- tetramethyl-4,6-dioxatetracyclo[6.5.1.01’10.03’7]tetradecane, or a mixture thereof; (1R,3S,7R,8R,10S,13R)-5-ethoxy-5,7,9,9,13-pentamethyl-4,6-dioxatetracyclo[6.5.1.01’1°.03’7]tetradecane, (1R,3S,7R,8R,10S,13R)-5-n-prop-2-enoxy-7,9,9,13-tetramethyl-4,6-dioxatetracyclo[6.5.1.01’1°.03’7]tetradecane, (1R,3S,7R,8R,10S,13R)-5-methoxy-5,7,9,9,13-pentamethyl-4,6-dioxatetracyclo[6.5.1 ,01■1°.03’7]tetradecane, (1 R,3S,7R,8R, 10S, 13R)-5-ethoxy-5-ethyl- 7,9,9,13-tetramethyl-4,6-dioxatetracyclo[6.5.1.01’1°.03’7]tetradecane, (1R,3S,7R,8R,10S,13R)-5-ethoxy-7,9,9,13-tetramethyl-4,6-dioxatetracyclo[6.5.1 ,01■1°.03’7]tetradecane, (1 R,3S,7R,8R, 10S, 13R)-7,9,9, 13-tetramethyl-5-n-propoxy-4,6-dioxatetracyclo[6.5.1 ,01■1°.03’7]tetradecane, (1 R,3S,7R,8R, 10S, 13R)-5-n-but-3-enoxy-7,9,9,13-tetramethyl-4,6-dioxatetracyclo[6.5.1.01’1°.03’7]tetradecane, (1R,3S, 7R,8R, 10S, 13R)-5-[(allyloxy)methyl]-5,7,9,9, 13-pentamethyl-4,6-dioxatetracyclo[6.5.1.01’1°.03’7]tetradecane, (1R,3S,7R,8R,10S,13R)-5,7,9,9,13-pentamethyl-5-{[acetoxy]methyl}-4,6-dioxatetracyclo[6.5.1.01’1°.03’7]tetradecane, (1R,3S,7R,8R,10S,13R)-5-prop-2-enoxy-5,7,9,9,13-pentamethyl-4,6-dioxatetracyclo[6.5.1.01’1°.03’7]tetradecane and (1R,3S, 7R,8R,10S,13R)-5,7,9,9,13-pentamethyl-5-{[1 -propen-1 -yloxy]methyl}-4,6-dioxatetracyclo[6.5.1.01’1°.03’7]tetradecane;

[0059] Group 5: camphor, borneol, isobornyl acetate, 8-isopropyl-6-methyl-bicyclo[2.2.2]oct-5-ene-2-carbaldehyde, pinene, camphene, 8-methoxycedrane, 8-methoxy-2,6,6,8-tetramethyl-tricyclo[5.3.1.0(1,5)]undecane, cedrene, cedrenol, cedrol, mixture of 9-ethylidene- 3-oxatricyclo[6.2.1 ,0(2,7)]undecan-4-one and 10-ethylidene-3-oxatricyclo[6.2.1.02’7]undecan- 4-one, 3-methoxy-7,7-dimethyl-10-methylene-bicyclo[4.3.1]decane;

[0060] Group 6: trimethyl-13-oxabicyclo-[10.1.0]-trideca-4,8-diene, 9-hexadecen-16-olide, pentadecenolide, 3-methyl-(4 / 5)-cyclopentadecenone, 3-methylcyclopentadecanone, pentadecanolide, cyclopentadecanone, 1-ethoxyethoxy)cyclododecane, 1,4-dioxacycloheptadecane-5, 17-dione, 4,8-cyclododecadien-1-one;

[0061] Group 7: (+-)-2-methyl-3-[4-(2-methyl-2-propanyl)phenyl]propanal, 2,2,2-trichloro-1 -phenylethyl acetate.

[0062] Preferably, the perfume comprises at least 30%, preferably at least 50%, more preferably at least 60% of ingredients selected from Groups 1 to 7, as defined above. More preferably said perfume comprises at least 30%, preferably at least 50% of ingredients from Groups 3 to 7, as defined above. Most preferably said perfume comprises at least 30%, preferably at least 50% of ingredients from Groups 3, 4, 6 or 7, as defined above. According to another preferred embodiment, the perfume comprises at least 30%, preferably at least 50%, more preferably at least 60% of ingredients having a logP above 3, preferably above 3.5 and even more preferably above 3.75.

[0063] According to a particular embodiment, the perfume used in the invention contains less than 10% of its own weight of primary alcohols, less than 15% of its own weight of secondary alcohols and less than 20% of its own weight of tertiary alcohols. Advantageously, the perfume used in the invention does not contain any primary alcohols and contains less than 15% of secondary and tertiary alcohols.

[0064] According to an embodiment, the oil phase comprises:

[0065] 25-100wt%, preferably 25-98% of a perfume oil comprising at least 15wt% of high impact perfume raw materials having a Log T<-4, and

[0066] 0-75wt%, preferably 2-75% of a density balancing material having a density greater than 1.07 g / cm3.

[0067] “High impact perfume raw materials" should be understood as perfume raw materials having a LogT<-4. The odor threshold concentration of a chemical compound is determined in part by its shape, polarity, partial charges and molecular mass. For convenience, the odor threshold concentration is presented as the common logarithm of the threshold concentration, i.e., Log [Threshold] (“LogT”).

[0068] A “density balancing material" should be understood as a material having a density greater than 1.07 g / cm3and having preferably low or no odor.

[0069] The odor threshold concentration of a perfuming compound is determined by using a gas chromatograph (“GC”). Specifically, the gas chromatograph is calibrated to determine the exact volume of the perfume oil ingredient injected by the syringe, the precise split ratio, and the hydrocarbon response using a hydrocarbon standard of known concentration and chainlength distribution. The air flow rate is accurately measured and, assuming the duration of a human inhalation to last 12 seconds, the sampled volume is calculated. Since the precise concentration at the detector at any point in time is known, the mass per volume inhaled is known and hence the concentration of the perfuming compound. To determine the threshold concentration, solutions are delivered to the sniff port at the back-calculated concentration. A panelist sniffs the GC effluent and identifies the retention time when odor is noticed. The average across all panelists determines the odor threshold concentration of the perfuming compound. The determination of odor threshold is described in more detail in C. Vuilleumier et al., Multidimensional Visualization of Physical and Perceptual Data Leading to a Creative Approach in Fragrance Development, Perfume & Flavorist, Vol. 33, September, 2008, pages 54-61.

[0070] The nature of high impact perfume raw materials having a Log T<-4 and density balancing material having a density greater than 1.07 g / cm3are described in WO2018115250, the content of which are included by reference.

[0071] According to an embodiment, the high impact perfume raw materials having a Log T<-4 are selected from the group consisting of (+-)-1-methoxy-3-hexanethiol, 4-(4-hydroxy-1-phenyl)-2-butanone, 2-methoxy-4-(1-propenyl)-1 -phenyl acetate, pyrazobutyle, 3-propylphenol, 1-(3-methyl-1-benzofuran-2-yl)ethanone, 2-(3-phenylpropyl)pyridine, 1 -(3, 3 / 5,5-dimethyl-1-cyclohexen-1-yl)-4-penten-1-one , 1-(5,5-dimethyl-1-cyclohexen-1-yl)-4-penten-1-one, a mixture comprising (3RS,3aRS,6SR,7ASR)-perhydro-3,6-dimethyl-benzo[b]furan-2-one and (3SR,3aRS,6SR,7ASR)-perhydro-3,6-dimethyl-benzo[b]furan-2-one, (+- )-1 -(5-ethyl-5-methyl-1-cyclohexen-1-yl)-4-penten-1-one, (TS,3'R)-1-methyl-2-[(1',2',2'-trimethylbicyclo[3.1.0]hex-3'-yl)methyl]cyclopropyl}methanol, (+-)-3-mercaptohexyl acetate, (2E)-1-(2,6,6-trimethyl-1,3-cyclohexadien-1-yl)-2-buten-1-one, H-methyl-2h-1,5-benzodioxepin-3(4H)-one, (2E,6Z)-2,6-nonadien-1-ol, (4Z)-4-dodecenal, (+-)-4-hydroxy-2,5-dimethyl-3(2H)-furanone, methyl 2,4-dihydroxy-3,6-dimethylbenzoate, 3-methylindole, (+-)-perhydro-4alpha,8abeta-dimethyl-4a-naphthalenol, patchoulol, 2-methoxy-4-(1-propenyl)phenol, mixture comprising (+-)-5,6-dihydro-4-methyl-2-phenyl-2H-pyran and tetrahydro-4-methylene-2-phenyl-2H-pyran, mixture comprising 4-methylene-2-phenyltetrahydro-2H-pyran and (+-)-4-methyl-2-phenyl-3,6-dihydro-2H-pyran, 4-hydroxy-3-methoxybenzaldehyde, nonylenic aldehyde, 2-methoxy-4-propylphenol, 3-methyl-5-phenyl-2-pentenenitrile, 1-(spiro[4.5]dec-6 / 7-en-7-yl)-4-penten-1-one(, 2-methoxynaphthalene, (-)-(3aR,5AS,9AS,9BR)-3a,6,6,9a-tetramethyldodecahydronaphtho[2,1-b]furan, 5-nonanolide, (3aR,5AS,9AS,9BR)-3a,6,6,9a-tetramethyldodecahydronaphtho[2,1-b]furan, 7-isopropyl-2H,4H-1,5-benzodioxepin-3-one, coumarin, 4-methylphenyl isobutyrate, (2E)-1 -(2,6,6-trimethyl-1,3-cyclohexadien-1-yl)-2-buten-1-one, beta, 2,2, 3-tetramethyl-delta-methylene-3-cyclopentene-1 -butanol, delta damascene ((2E)-1-[(1RS,2SR)-2,6,6-trimethyl-3-cyclohexen-1-yl]-2-buten-1-one), (+-)-3,6-dihydro-4,6-dimethyl-2-phenyl-2h-pyran, anisaldehyde, paracresol, 3-ethoxy-4-hydroxybenzaldehyde, methyl 2-aminobenzoate, ethyl methylphenylglycidate, octalactone gamma, ethyl 3-phenyl-2-propenoate, (-)-(2E)-2-ethyl-4-[(1R)-2,2,3-trimethyl-3-cyclopenten-1-yl]-2-buten-1-ol, paracresyl acetate, dodecalactone, tricyclone, (+)-(3R,5Z)-3-methyl-5-cyclopentadecen-1-one, undecalactone, (1R,4R)-8- mercapto-3-p-menthanone, (3S,3AS,6R,7AR)-3,6-dimethylhexahydro-1-benzofuran-2(3H)-one, beta ionone, (+-)-6-pentyltetrahydro-2H-pyran-2-one, (3E,5Z)-1,3,5-undecatriene, 10-undecenal, (9E)-9-undecenal (9Z)-9-undecenal, (Z)-4-decenal, (+- )-ethyl 2-methylpentanoate, 1 ,2-diallyldisulfane, 2-tridecenenitrile, 3-tridecenenitrile, , (+-)-2-ethyl-4,4-dimethyl-1 ,3-oxathiane, (+)-(3R,5Z)-3-methyl-5-cyclopentadecen-1-one, 3-(4-tert-butylphenyl)propanal, allyl (cyclohexyloxy)acetate, methylnaphthylketone, (+-)-(4E)-3-methyl-4-cyclopentadecen-1-one, (+-)-5E3-methyl-5-cyclopentadecen-1-one, cyclopropylmethyl 3-hexenoate, (4E)-4-methyl-5-(4-methylphenyl)-4-pentenal, (+-)-1-(5-propyl-1,3-benzodioxol-2-yl)ethanone, 4-methyl-2-pentylpyridine, (+-)-(E)-3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, (3aRS,5aSR,9aSR,9bRS)-3a,6,6,9a-tetramethyldodecahydronaphtho[2,1-b]furan, (2S,5R)-5-methyl-2-(2-propanyl)cyclohexanone oxime, 6-hexyltetrahydro-2H-pyran- 2-one, (+-)-3-(3-isopropyl-1-phenyl)butanal, methyl 2-(3-oxo-2-pentylcyclopentyl)acetate, 1-(2,6,6-trimethyl-1-cyclohex-2-enyl)pent-1-en-3-one, indol, 7-propyl-2H,4H-1,5-benzodioxepin- 3-one, ethyl praline, (4-methylphenoxy)acetaldehyde, ethyl tricyclo[5.2.1.0.2’6]decane-2-carboxylate, (+)-(TS,2S,E)-3,3-dimethyl-5-(2',2',3'-trimethyl-3'-cyclopenten-1'-yl)-4-penten-2-ol, (4E)-3,3-dimethyl-5-[(1R)-2,2,3-trimethyl-3-cyclopenten-1-yl]-4-penten-2-ol, 8-isopropyl-6-methyl-bicyclo[2.2.2]oct-5-ene-2-carbaldehyde, methylnonylacetaldehyde, 4-formyl-2-methoxyphenyl 2-methylpropanoate, (E)-4-decenal, (+-)-2-ethyl-4-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-buten-1-ol, (1R,5R)-4,7,7-trimethyl-6-thiabicyclo[3.2.1]oct-3-ene, (1R,4R,5R)-4,7,7-trimethyl-6-thiabicyclo[3.2.1]octane, (-)-(3R)-3,7-dimethyl-1,6-octadien-3-ol, (E)-3-phenyl-2-propenenitrile, 4-methoxybenzyl acetate, (E)-3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)-4-penten-2-ol, allyl (2 / 3-methylbutoxy)acetate, (+-)-(2E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-2-buten-1-one, (1E)-1-(2,6,6-trimethyl-1-cyclohexen-1-yl)-1-penten-3-one, and mixtures thereof.

[0072] According to an embodiment, perfume raw materials having a Log T<-4 are chosen in the group consisting of aldehydes, ketones, alcohols, phenols, esters lactones, ethers, epoxydes, nitriles and mixtures thereof.

[0073] According to an embodiment, perfume raw materials having a Log T<-4 comprise at least one compound chosen in the group consisting of alcohols, phenols, esters lactones, ethers, epoxydes, nitriles and mixtures thereof, preferably in amount comprised between 20 and 70% by weight based on the total weight of the perfume raw materials having a Log T<-4. According to an embodiment, perfume raw materials having a Log T<-4 comprise between 20 and 70% by weight of aldehydes, ketones, and mixtures thereof based on the total weight of the perfume raw materials having a Log T<-4.

[0074] The remaining perfume raw materials contained in the hydrophobic material may have therefore a Log T>-4.

[0075] According to an embodiment, the perfume raw materials having a Log T>-4 are chosen in the group consisting of ethyl 2-methylbutyrate, (E)-3-phenyl-2-propenyl acetate, (+-)-6 / 8-sec-butylquinoline, (+-)-3-(1,3-benzodioxol-5-yl)-2-methylpropanal, verdyl propionate, 1-(octahydro-2, 3, 8, 8-tetramethyl-2-naphtalenyl)-1 -ethanone, methyl 2-((1 RS,2RS)-3-oxo-2-pentylcyclopentyl)acetate, (+-)-(E)-4-methyl-3-decen-5-ol, 2,4-dimethyl-3-cyclohexene-1-carbaldehyde, 1,3,3-trimethyl-2-oxabicyclo[2.2.2]octane, tetrahydro-4-methyl-2-(2-methyl-1-propenyl)-2H-pyran, dodecanal, 1-oxa-12 / 13-cyclohexadecen-2-one, (+-)-3-(4-isopropylphenyl)-2-methylpropanal, aldehyde C11, (+-)-2,6-dimethyl-7-octen-2-ol, allyl 3-cyclohexylpropanoate, (Z)-3-hexenyl acetate, 5-methyl-2-(2-propanyl)cyclohexanone, allyl heptanoate, 2-(2-methyl-2-propanyl)cyclohexyl acetate, 1,1-dimethyl-2-phenylethyl butyrate, geranyl acetate, neryl acetate, (+-)-1 -phenylethyl acetate, 1,1-dimethyl-2-phenylethyl acetate, 3-methyl-2-butenyl acetate, ethyl 3-oxobutanoate, (2Z)-ethyl 3-hydroxy-2-butenoate, 8-p-menthanol, 8-p-menthanyl acetate, 1-p-menthanyl acetate, (+-)-2-(4-methyl-3-cyclohexen-1-yl)-2-propanyl acetate, (+-)-2-methylbutyl butanoate, 2-{(1S)-1-[(1R)-3,3-dimethylcyclohexyl]ethoxy}-2-oxoethyl propionate, 3,5,6-trimethyl-3-cyclohexene-1-carbaldehyde, 2,4,6-trimethyl-3-cyclohexene-1-carbaldehyde, 2-cyclohexylethyl acetate, octanal, ethyl butanoate, (+-)-(3E)-4-(2,6,6-trimethyl-1 / 2-cyclohexen-1-yl)-3-buten-2-one, 1-[(1 RS,6SR)-2,2,6-trimethylcyclohexyl]-3-hexanol, 1 ,3,3-trimethyl-2-oxabicyclo[2.2.2]octane, 1,3,3-trimethyl-2-oxabicyclo[2.2.2]octane, ethyl hexanoate, undecanal, decanal, 2-phenylethyl acetate, (1 S,2S,4S)-1 ,7,7-trimethylbicyclo[2.2.1 ]heptan-2-ol, (1 S,2R,4S)-1 ,7,7-trimethylbicyclo[2.2.1]heptan-2-ol ), (+-)-3,7-dimethyl-3-octanol, 1-methyl-4-(2-propanylidene)cyclohexene, (+)-(R)-4-(2-methoxypropan-2-yl)-1 -methylcyclohex- 1 -ene, verdyl acetate, (3R)-1-[(1R,6S)-2,2,6-trimethylcyclohexyl]-3-hexanol, (3S)-1-[(1R,6S)-2,2,6-trimethylcyclohexyl]-3-hexanol, (3R)-1-[(1S,6S)-2,2,6-trimethylcyclohexyl]-3-hexanol, (+)-(1S,1'R)-2-[1-(3',3'-dimethyl-T-cyclohexyl)ethoxy]-2-methylpropyl propanoate, and mixtures thereof.

[0076] According to an embodiment, the hydrophobic material (or perfume formulation) comprises 0 to 60 wt% of a hydrophobic solvent (based on the total weight of the perfume formulation),

[0077] 40 to 100 wt% of a perfume oil (based on the total weight of the perfume formulation), wherein the perfume oil has at least two, preferably all of the following characteristics:

[0078] o at least 35%, preferably at least 40%, preferably at least 50%, more preferably at least 60% of perfuming ingredients having a log P above 3, preferably above 3.5,

[0079] o at least 20%, preferably at least 25%, preferably at least 30%, more preferably at least 40% of Bulky materials of groups 1 to 6, preferably 3 to 6 as defined previously and

[0080] o at least 15%, preferably at least 20%, more preferably at least 25%, even more preferably at least 30% of high impact perfume materials having a Log T < -4 as defined previously,

[0081] optionally, further hydrophobic active ingredients.

[0082] According to a particular embodiment, the perfume comprises 0 to 60 wt% of a hydrophobic solvent.

[0083] According to a particular embodiment, the hydrophobic solvent is a density balancing material preferably chosen in the group consisting of benzyl salicylate, benzyl benzoate, cyclohexyl salicylate, benzyl phenylacetate, phenylethyl phenylacetate, triacetin, ethyl citrate, methyl and ethyl salicylate, benzyl cinnamate, and mixtures thereof.

[0084] In a particular embodiment, the hydrophobic solvent has Hansen Solubility Parameters compatible with entrapped perfume oil.

[0085] The term "Hansen solubility parameter" is understood to refer to a solubility parameter approach proposed by Charles Hansen used to predict polymer solubility and was developed around the basis that the total energy of vaporization of a liquid consists of several individual parts. To calculate the "weighted Hansen solubility parameter" one must combine the effects of (atomic) dispersion forces, (molecular) permanent dipole-permanent dipole forces, and (molecular) hydrogen bonding (electron exchange). The weighted Hansen solubility parameter" is calculated as (5D2+ SP2+ 5H2)0 5, wherein 5D is the Hansen dispersion value (also referred to in the following as the atomic dispersion fore), 5P is the Hansen polarizability value (also referred to in the following as the dipole moment), and bH is the Hansen Hydrogenbonding ("h-bonding") value (also referred to in the following as hydrogen bonding). For a more detailed description of the parameters and values, see Charles Hansen, The Three Dimensional Solubility Parameter and Solvent Diffusion Coefficient, Danish Technical Press (Copenhagen, 1967).

[0086] Euclidean difference in solubility parameter between a fragrance and a solvent is calculated a

[0087]

[0088] s (4*(bDSO|vent-bDfragrance)2+ (^Psolvent"^Pfragrance)2+(^Hso|vent-bHfragrance)2)0-5, in which 6DS0|Vent, 6PS0|Vent’anc* ^HS0|Vent, are the Hansen dispersion value, Hansen polarizability value, and Hansen h-bonding values of the solvent, respectively; and 6Dfragrance, QPfragrance’anc* Hfragranceare the Hansen dispersion value, Hansen polarizability value, and Hansen h-bonding values of the fragrance, respectively.

[0089] In a particular embodiment, the Perfume Oil And the hydrophobic solvent have at least two Hansen solubility parameters selected from a first group consisting of: an atomic dispersion force (bD) from 12 to 20, a dipole moment (bP) from 1 to 8, and a hydrogen bonding (bH) from 2.5 to 11.

[0090] In a particular embodiment, the perfume oil and the hydrophobic solvent have at least two Hansen solubility parameters selected from a second group consisting of: an atomic dispersion force (bD) from 12 to 20, preferably from 14 to 20, a dipole moment (bP) from 1 to 8, preferably from 1 to 7, and a hydrogen bonding (bH) from 2.5 to 11, preferably from 4 to 11.

[0091] In a particular embodiment, at least 90% of the perfume oil, preferably at least 95% of the perfume oil, most preferably at least of 98% of the perfume oil has at least two Hansen solubility parameters selected from a first group consisting of: an atomic dispersion force (bD) from 12 to 20, a dipole moment (bP) from 1 to 8, and a hydrogen bonding (bH) from 2.5 to 11. In a particular embodiment, the Perfume Oil And the hydrophobic solvent have at least two Hansen solubility parameters selected from a second group consisting of: an atomic dispersion force (bD) from 12 to 20, preferably from 14 to 20, a dipole moment (bP) from 1 to 8, preferably from 1 to 7, and a hydrogen bonding (bH) from 2.5 to 11, preferably from 4 to 11.

[0092] According to an embodiment, the perfuming formulation comprises a fragrance modulator (that can be used in addition to the hydrophobic solvent when present or as substitution of the hydrophobic solvent when there is no hydrophobic solvent).

[0093] Preferably, the fragrance modulator is defined as a fragrance material with

[0094] i. a vapor pressure of less than 0.0008 Torr at 22°C;

[0095] ii. a clogP of 3.5 and higher, preferably 4.0 and higher and more preferably 4.5 iii. at least two Hansen solubility parameters selected from a first group consisting of: an atomic dispersion force from 12 to 20, a dipole moment from 1 to 7, and a hydrogen bonding from 2.5 to 11,

[0096] iv. at least two Hansen solubility parameters selected from a second group consisting of: an atomic dispersion force from 14 to 20, a dipole moment from 1 to 8, and a hydrogen bonding from 4 to 11, when in solution with a compound having a vapor pressure range of 0.0008 to 0.08 Torr at 22°C.

[0097] Preferably, as examples the following ingredients can be listed as modulators but the list in not limited to the following materials: alcohol C12, oxacyclohexadec-12 / 13-en-2-one, 3-[(2',2',3'-trimethyl-3'-cyclopenten-1'-yl)methoxy]-2-butanol, cyclohexadecanone, (Z)-4-cyclopentadecen-1-one, cyclopentadecanone, (8Z)-oxacycloheptadec-8-en-2-one, 2-[5-(tetrahydro-5-methyl-5-vinyl-2-furyl)-tetrahydro-5-methyl-2-furyl]-2-propanol, muguet aldehyde, 1 ,5,8-trimethyl-13-oxabicyclo[10.1 ,0]trideca-4,8-diene, (+-)-4,6,6,7,8,8-hexamethyl-1 ,3,4,6,7,8-hexahydrocyclopenta[g]isochromene, (+)-(1 S,2S,3S,5R)-2,6,6-trimethylspiro[bicyclo[3.1.1 ]heptane-3, 1 '-cyclohexane]-2'-en-4'-one, oxacyclohexadecan-2-one, 2-{(1S)-1-[(1R)-3,3-dimethylcyclohexyl]ethoxy}-2-oxoethyl propionate, (+)-(4R,4aS,6R)-4,4a-dimethyl-6-(1-propen-2-yl)-4,4a,5,6,7,8-hexahydro-2(3H)-naphthalenone, amylcinnamic aldehyde, hexylcinnamic aldehyde, hexyl salicylate, (1E)-1-(2,6,6-trimethyl-1-cyclohexen-1-yl)-1 ,6-heptadien-3-one, (9Z)-9-cycloheptadecen-1-one.

[0098] According to a particular embodiment, the hydrophobic material is free of any active ingredient (such as perfume). According to this particular embodiment, it comprises, preferably consists of hydrophobic solvents, preferably chosen in the group consisting of isopropyl myristate, triglycerides (e.g. Neobee® MCT oil, vegetable oils), D-limonene, silicone oil, mineral oil, and mixtures thereof with optionally hydrophilic solvents, preferably chosen in the group consisting of 1,4-butanediol, benzyl alcohol, triethyl citrate, triacetin, benzyl acetate, ethyl acetate, propylene glycol (1 ,2-propanediol), 1 ,3-propanediol, dipropylene glycol, glycerol, glycol ethers and mixtures thereof.

[0099] The term "biocide" refers to a chemical substance capable of killing living organisms (e.g. microorganisms) or reducing or preventing their growth and / or accumulation. Biocides are commonly used in medicine, agriculture, forestry, and in industry where they prevent the fouling of, for example, water, agricultural products including seed, and oil pipelines. A biocide can be a pesticide, including a fungicide, herbicide, insecticide, algicide, molluscicide, miticide and rodenticide; and / or an antimicrobial such as a germicide, antibiotic, antibacterial, antiviral, antifungal, antiprotozoal and / or antiparasite.

[0100] As used herein, a "pest control agent" indicates a substance that serves to repel or attract pests, to decrease, inhibit or promote their growth, development or their activity. Pests refer to any living organism, whether animal, plant or fungus, which is invasive or troublesome to plants or animals, pests include insects notably arthropods, mites, spiders, fungi, weeds, bacteria and other microorganisms.

[0101] By "flavor oil", it is meant here a flavoring ingredient or a mixture of flavoring ingredients, solvents or adjuvants of current use for the preparation of a flavoring formulation, i.e. a particular mixture of ingredients which is intended to be added to an edible composition or chewable product to impart, improve or modify its organoleptic properties, in particular its flavor and / or taste. Flavoring ingredients are well known to a person skilled in the art and their nature does not warrant a detailed description here, which in any case would not be exhaustive, the skilled flavorist being able to select them on the basis of his general knowledge and according to the intended use or application and the organoleptic effect it is desired to achieve. Many of these flavoring ingredients are listed in reference texts such as in the book by S. Arctander, Perfume and Flavor Chemicals, 1969, Montclair, N.J., USA, or its more recent versions, or in other works of similar nature such as Fenaroli's Handbook of Flavor Ingredients, 1975, CRC Press or Synthetic Food Adjuncts, 1947, by M. B. Jacobs, van Nostrand Co., Inc. Solvents and adjuvants of current use for the preparation of a flavoring formulation are also well known in the art.

[0102] In a particular embodiment, the flavor is a mint flavor. In a more particular embodiment, the mint is selected from the group consisting of peppermint and spearmint.

[0103] In a further embodiment, the flavor is a cooling agent or mixtures thereof.

[0104] In another embodiment, the flavor is a menthol flavor.

[0105] Flavors that are derived from or based on fruits where citric acid is the predominant, naturally occurring acid include but are not limited to, for example, citrus fruits (e.g. lemon, lime), limonene, strawberry, orange, and pineapple. In one embodiment, the flavors food is lemon, lime or orange juice extracted directly from the fruit. Further embodiments of the flavor comprise the juice or liquid extracted from oranges, lemons, grapefruits, key limes, citrons, clementines, mandarins, tangerines, and any other citrus fruit, or variation or hybrid thereof. In a particular embodiment, the flavor comprises a liquid extracted or distilled from oranges, lemons, grapefruits, key limes, citrons, clementines, mandarins, tangerines, any other citrus fruit or variation or hybrid thereof, pomegranates, kiwifruits, watermelons, apples, bananas, blueberries, melons, ginger, bell peppers, cucumbers, passion fruits, mangos, pears, tomatoes, and strawberries.

[0106] In a particular embodiment, the flavor comprises a composition that comprises limonene. In a particular embodiment, the composition is a citrus that further comprises limonene.

[0107] In another particular embodiment, the flavor comprises a flavor selected from the group comprising strawberry, orange, lime, tropical, berry mix, and pineapple.

[0108] The phrase flavor includes not only flavors that impart or modify the smell of foods but include taste imparting or modifying ingredients. The latter do not necessarily have a taste or smell themselves but are capable of modifying the taste that other ingredients provide, for instance, salt enhancing ingredients, sweetness enhancing ingredients, umami enhancing ingredients, bitterness blocking ingredients and so on.

[0109] According to a particular embodiment, the hydrophobic material may comprise a nutraceutical.

[0110] By “cosmetics” what is meant here is a functional cosmetic ingredient.

[0111]

[0112] In the context of the present invention, a polyelectrolyte is defined as a polymer or a material of colloidal particles that has charged groups along its backbone or on its surface. Polyelectrolytes can be classified based on the nature of the charged groups: if they carry a net positive charge, they are termed polycations; if they carry a net negative charge, they are termed polyanions.

[0113] According to an embodiment, the first polyelectrolyte comprises at least one functional group selected from the group consisting of amines, thiols, acetoacetates, phenols and mixtures thereof.

[0114] According to a preferred embodiment, the first polyelectrolyte comprises at least one phenol group. According to an embodiment, the first polyelectrolyte comprises, preferably consists of, a biopolymer and / or an amino-functionalized colloidal particles, preferably wherein the first polyelectrolyte comprises, preferably consists of, a protein, a polysaccharide, a modified polysaccharide, amino-functionalized silica particles, or a polyphenol, more preferably, wherein the first polyelectrolyte comprises, preferably consists of, a plant-based protein, pectin, amino-functionalized silica particles, or a plant-derived polyphenol, even more preferably the first polyelectrolyte comprises, preferably consists of, a potato protein or sugar beet pectin or amino-functionalized silica particles.

[0115] Proteins used according to the invention can be milk proteins, selected from casein or caseinate salts, such as sodium caseinate, calcium or potassium caseinate, whey protein and hydrolyzed protein; egg protein; or gelatins, such as fish or swine gelatin; silk protein, or plant-derived proteins. Plant-derived or vegetable proteins are typically extracted from plants containing high amounts of proteins such as legumes, cereal, pseudocereal, seeds, including rice, and hemp, or potato. Plant-derived, or plant-based proteins, shall comprise but are not limited to algae protein, barley protein, black bean protein, canola protein, chickpea protein, fava bean protein, green bean protein, hemp protein, lentil protein, lupin protein, oat protein, pea protein, potato protein, red bean protein, rice protein, sunflower seed protein, soybean protein, wheat protein, such as gluten, or combinations thereof. Potato proteins are typically extracted from potato tuber (Solanum tuberosum).

[0116] The protein, preferably a plant-derived protein, more preferably a potato protein, used in this invention may be native, partially or completely denaturated by any suitable method. Denaturation is a process which modify the conformational structure of a protein by unfolding, i.e., it involves the disruption and possible destruction of both the secondary and tertiary structures of the protein. Indeed, denaturation implicates the breaking of many of the weak linkages, or bonds (e.g., hydrogen bonds), within a protein molecule that are responsible for the highly ordered structure of the protein in its native state. Denaturation is reversible (the proteins can regain their native state when the denaturating influence is removed) or irreversible.

[0117] Denaturation can be brought about in various ways. Proteins can be denatured by exposure to temperature, radiation or mechanical stress including shear, changes in pH (treatment with a base or an acid), treatment with oxidizing or reducing agents, inorganic salt, certain organic solvents, chaotropic agents (i.e, compounds having a positive chaotropic value - kJ ■ kg-1■ mol-1- on the Hallsworth Scale - such as guanidine salts - e.g., guanidine carbonate, guanidine hydrochloride -, urea, calcium chloride, n-butanol, ethanol, lithium perchlorate, lithium acetate, magnesium chloride, phenol, 2-propanol, sodium dodecyl sulfate, thiourea).

[0118] The protein used in this invention can also be derivatized or modified (e.g., derivatized or chemically modified). For example, the protein can be modified by covalently attaching sugars, lipids, peptides or chemical groups such as phosphates or methyl.

[0119] According to an embodiment, the peptide sequence of the protein used in the invention comprises at least 5, preferably at least 10, even more preferably at least 15 different amino acids.

[0120] According to an embodiment, the potato protein is a native potato protein, which preferably comprises patatin.

[0121] According to an embodiment, the amino-functionalized colloidal particles are inorganic particles, including silica, silicates, silicon dioxide, titanium dioxide, aluminium oxide, zinc oxide, iron oxide, mica, clays, kaolin, montmorillonite, laponite, bentonite, perlite, dolomite, diatomite, vermiculite, hectorite, gibbsite, illite, kaolinite, aluminosilicates, gypsum, bauxite, magnesite, talc, magnesium carbonate, calcium carbonate, hydroxyapatite or tricalcium phosphate, and diatomaceous earth. Preferably, inorganic particles selected from silicon dioxide and kaolin are used.

[0122] In the context of the present invention, amino functionalized colloidal particles refer to amino functionalized silica particles that have been chemically modified to include amino groups (- NH2) on their surface. This modification is typically achieved by grafting or covalently bonding amino-containing silane coupling agents, such as aminopropyl triethoxysilane (APTES), to the silica surface. The resulting silica particles retain the physical properties of silica, such as high surface area and stability, while also exhibiting the chemical reactivity associated with amino groups. In the context of the present invention, the term amino functionalized colloidal particles refers to amino functionalized kaolin particles which are a naturally occurring clay mineral, primarily composed of the mineral kaolinite modified by amino-containing silane coupling agents.

[0123] According to an embodiment, the amino-functionalized silica particles is silica, silicates or silicon dioxide particles modified with (3-aminopropyl)triethoxysilane.

[0124] According to an embodiment, the amino-functionalized colloidal particles are polymeric particles, including chitosan, chitin, silk fibrin, protein, polysaccharide, protein / polysaccharide complex.

[0125] According to an embodiment the first polyelectrolyte comprises, preferably consists of plant-derived protein and / or amino functionalized silica particles, even more preferably of potato protein and / or tetraethyl orthosilicate modified with (3-aminopropyl)triethoxysilane.

[0126] According to an embodiment, the first polyelectrolyte is a biopolymer and has a solubility in water that is greater than 10%. According to an embodiment, the first polyelectrolyte is a biopolymer and has a solubility in water that is greater than 20%. According to an embodiment, the first polyelectrolyte is a biopolymer and has a solubility in water that is greater than 30%. According to an embodiment, the first polyelectrolyte is a biopolymer and has a solubility in water that is greater than 40%. According to an embodiment, the first polyelectrolyte is a biopolymer and has a solubility in water that is greater than 50%. According to an embodiment, the first polyelectrolyte is a biopolymer and has a solubility in water that is greater than 60%. According to an embodiment, the first polyelectrolyte is a biopolymer and has a solubility in water that is greater than 70%. According to an embodiment, the first polyelectrolyte is a biopolymer and has a solubility in water that is greater than 80%. According to an embodiment, the first polyelectrolyte is a biopolymer and has a solubility in water that is greater than 90%. Solubility values expressed as a percentage may be calculated on a weight-by-volume basis or on a weight-by-weight basis. Preferably solubility values in percentages are to be understood as calculated on a weight-by-weight basis. The above solubilities are given in water at room temperature (typically 20°C) and preferably at native pH (typically pH 7).

[0127] The solubility of the polyelectrolyte can be determined by preparing an aqueous solution of the polyelectrolyte at a known initial concentration at 20°C. The resulting solution is incubated until an equilibrium is reached. Then, the solution is centrifuged at 10000 g for 20 min at 4°C and the precipitates is separated from the supernatant. The solubility of the polyelectrolyte is determined be measuring the concentration of the polyelectrolyte in the supernatant standard analytical methods such as light scattering, viscosimetry or spectrophotometric assays.

[0128] According to an embodiment, the first polyelectrolyte can be uniformly dispersed in the water phase.

[0129] According to an embodiment, the process further comprises that a second polyelectrolyte having an opposite net charge to the first polyelectrolyte is added to the mixture in step (a) and / or is added to the mixture in step (b).

[0130] According to an embodiment, the process further comprises that a second polyelectrolyte having an opposite net charge to the first polyelectrolyte, when solubilized is added to the mixture in step (a) and / or is added to the mixture in step (b).

[0131] According to an embodiment, the process further comprises that a second polyelectrolyte having an opposite net charge to the first polyelectrolyte at a pH < 9, preferably at a pH < 7, even more preferably at a pH < 5, is added to the mixture in step (a) and / or is added to the mixture in step (b).

[0132] According to an embodiment, the first or the second polyelectrolyte has a positive net charge.

[0133] According to an embodiment, the first or the second polyelectrolyte has a positive net charge, when solubilized.

[0134] According to an embodiment, the first or the second polyelectrolyte has a positive net charge at a pH < 9, preferably at a pH < 7, even more preferably at a pH < 5.

[0135] According to an embodiment, the first or the second polyelectrolyte has a positive net charge at a pH of 4. According to an embodiment, the first or the second polyelectrolyte has a negative net charge.

[0136] According to an embodiment, the first or the second polyelectrolyte has a negative net charge when solubilized.

[0137] According to an embodiment, the first or the second polyelectrolyte has a negative net charge at a pH > 2.

[0138] According to an embodiment, the first or the second polyelectrolyte has a negative net charge at pH 4.

[0139] According to an embodiment, the first polyelectrolyte has a positive net charge, and the second polyelectrolyte has a negative net charge.

[0140] According to an embodiment, the first polyelectrolyte has a negative net charge, and the second polyelectrolyte has a positive net charge.

[0141] According to an embodiment, the first polyelectrolyte has a positive net charge, and the second polyelectrolyte has a negative net charge, when solubilized.

[0142] According to an embodiment, the first polyelectrolyte has a negative net charge, and the second polyelectrolyte has a positive net charge, when solubilized.

[0143] According to an embodiment, the first and the second polyelectrolytes have opposing net charges, wherein one polyelectrolyte has a positive net charge when the pH is less than or equal to 9, preferably when the pH is less than or equal to 7, even more preferably when the pH is less than or equal to 5 while the other polyelectrolyte has a negative net charge when the pH is greater than 2.

[0144] According to an embodiment, the first and the second polyelectrolytes have opposing net charges, wherein one polyelectrolyte has a positive net charge at a pH of between about 3 and about 6.5 and the other polyelectrolyte has a negative net charge at a pH of between about 3 and about 6.5.

[0145] According to an embodiment, the process further comprises that a second polyelectrolyte having an opposite net charge to the first polyelectrolyte is added to the mixture in step (a) and / or is added to the mixture in step (b), wherein one polyelectrolyte has a positive net charge at a pH between about 3 and about 6.5, and the other polyelectrolyte has a negative net charge at about the same pH of between about 3 and about 6.5.

[0146] According to an embodiment, the second polyelectrolyte comprises, preferably consists of, a polysaccharide or a protein preferably wherein the second polyelectrolyte comprises, preferably consists of, pectins, modified polysaccharides comprising at least one aldehyde and / or at least one acetoacetate and / or compounds containing a phenol or polyphenol group, plant-derived protein, more preferably wherein the second polyelectrolyte comprises, preferably consists of, a sugar beet pectin and / or citrus pectin.

[0147] According to an embodiment, the second polyelectrolyte is a biopolymer and has a solubility in water that is greater than 10%. According to an embodiment, the second polyelectrolyte is a biopolymer and has a solubility in water that is greater than 20%. According to an embodiment, the second polyelectrolyte is a biopolymer and has a solubility in water that is greater than 30%. According to an embodiment, the second polyelectrolyte is a biopolymer and has a solubility in water that is greater than 40%. According to an embodiment, the second polyelectrolyte is a biopolymer and has a solubility in water that is greater than 50%. According to an embodiment, the second polyelectrolyte is a biopolymer and has a solubility in water that is greater than 60%. According to an embodiment, the second polyelectrolyte is a biopolymer and has a solubility in water that is greater than 70%. According to an embodiment, the second polyelectrolyte is a biopolymer and has a solubility in water that is greater than 80%. According to an embodiment, the second polyelectrolyte is a biopolymer and has a solubility in water that is greater than 90%. Solubility values expressed as a percentage may be calculated on a weight-by-volume basis or on a weight-by-weight basis. Preferably solubility values in percentages are to be understood as calculated on a weight-by-weight basis.

[0148] According to an embodiment, the second polyelectrolyte comprises at least one functional group selected from the group consisting of amines, thiols, acetoacetates, phenols and mixtures thereof. According to an embodiment, the polyelectrolytes comprise at least one functional group selected from the group consisting of amines, thiols, acetoacetates, phenols and mixtures thereof.

[0149] According to an embodiment, the weight ratio between the first and the second polyelectrolyte is comprised between 0.2:1 to 10:1, preferably between 0.33:1 to 6:1 and more preferably between 0.4:1 to 6:1.

[0150] According to a particular embodiment, the process does not comprise a second polyelectrolyte.

[0151] According to a preferred embodiment, the first polyelectrolyte and the second polyelectrolyte are not identical, preferably the first polyelectrolyte is a plant-based protein and the second polyelectrolyte is a pectin, more preferably the first polyelectrolyte is a modified or unmodified potato protein, and the second polyelectrolyte is a modified or unmodified pectin.

[0152] Enzyme

[0153] According to an embodiment, the shell of the core-shell microcapsule is hardened by crosslinking induced by an enzyme.

[0154] According to a preferred embodiment, the enzyme is an oxidoreductase.

[0155] In the context of the present invention, an oxidoreductase is defined as an enzyme that catalyzes oxidation-reduction (redox) reactions, which involve the transfer of electrons between molecules. Specifically, oxidoreductases facilitate the transfer of electrons from a donor molecule (the reductant) to an acceptor molecule (the oxidant).

[0156] According to a preferred embodiment, the enzyme is a phenol-oxidoreductase.

[0157] A phenol oxidoreductase is an enzyme that specifically catalyzes oxidation-reduction reactions involving phenolic substrates, including polyphenols. This type of oxidoreductase facilitates the transfer of electrons between phenol molecules and other redox-active compounds, resulting in the oxidation of phenols and the reduction of the corresponding acceptors. According to an even more preferred embodiment, the enzyme is a phenol-oxidase (E1.10) such as catechol oxidase (EC 1.10.3.1), tyrosinases (EC 1.14.18.1) and laccase (E1.10.3.2), or horseradish peroxidase (EC 1.11.1.7).

[0158] According to an embodiment, the enzyme, preferably the oxidoreductase is used in an amount ranging from 0.01 to 10 units per 1 gram of total polyelectrolyte, preferably from 0.1 to 1 unit per 1 gram of total polyelectrolyte.

[0159] The expression “total polyelectrolyte” refers to sum of polyelectrolytes used for the preparation of a microcapsule.

[0160] In the context of the present invention, the term "unit", is defined as a measure of enzymatic activity. Specifically, one unit of an enzyme is the amount of enzyme that catalyzes the transformation of one micromole (pmol) of substrate per minute under defined conditions of temperature, pH, and substrate concentration.

[0161] According to a particular embodiment, the enzyme is not a transglutaminase.

[0162] According to a particular embodiment, the process does not comprise the use of a transglutaminase.

[0163] According to a particular embodiment, the enzyme is not a horseradish peroxidase. According to a particular embodiment, the process does not comprise the use of a horseradish peroxidase.

[0164] Crosslinker

[0165] In the context of the present invention, a crosslinker is defined as a chemical agent that facilitates the formation of covalent bonds between polymer chains, thereby creating a network or crosslinked structure.

[0166] According to an embodiment, the hydrophobic phase further comprises a crosslinker.

[0167] Preferably, the hydrophobic phase comprises a polyisocyanate crosslinker, a poly acid chloride crosslinker, an acrylate cross linker, a methacrylate crosslinker, a functional silane, multi-functionalized aldehydes, multi-functionalized anhydrides, or mixtures thereof. Even more preferably, the hydrophobic phase comprises a polyisocyanate crosslinker.

[0168] According to an embodiment, the polyisocyanate crosslinker comprises at least two, preferably at least three reactive isocyanate groups.

[0169] According to an embodiment, the polyisocyanate crosslinker is selected from the group consisting of tris(p-isocyanatophenyl) thiophosphate (e.g. commercially available from Covestro under the tradename Desmodur® RFE), a polyisocyanurate of toluene diisocyanate (e.g. commercially available from Covestro under the tradename Desmodur® RC), an aromatic polyisocyanate resin based on toluene diisocyanate such as e.g. a trimethylol propane-adduct of toluene diisocyanate (e.g. commercially available from Bayer, now Covestro, under the tradename Desmodur® L75), a trimethylol propane-adduct of xylylene diisocyanate (e.g. commercially available from Mitsui Chemicals under the tradename Takenate® D-110N), a trimer of hexamethylene diisocyanate, a trimer of isophorone diisocyanate, a trimethylol propane- adduct of hexamethylene diisocyanate (available e.g. from Mitsui Chemicals) or a biuret of hexamethylene diisocyanate (e.g. commercially available from Bayer, now Covestro, under the tradename Desmodur® N 100), L-Lysine diisocyanate ethyl ester, Isophorone diisocyanate, hexamethylene diisocyanate and mixtures thereof.

[0170] According to an embodiment, the poly acid chloride crosslinker comprises at least two, preferably at least three reactive acid chloride groups.

[0171] According to an embodiment, the poly acid chloride crosslinker is selected from the group consisting of propane-1, 2, 3-tricarbonyl trichloride, cyclohexane- 1,2, 4, 5-tetracarbonyl tetrachloride, 2,2'-disulfanediyldisuccinyl dichloride, 2-(2-chloro-2-oxo-ethyl)sulfanylbutanedioyl dichloride, (4-chloro-4-oxobutanoyl)-L-glutamoyl dichloride, (S)-4-((l,5-dichloro-l,5-dioxopentan-2-yl)amino)-4-oxobutanoic acid, 2,2-bis[(4-chloro-4-oxo-butanoyl)oxymethyl]butyl 4-chloro-4-oxo-butanoate, [2-[2,2-bis[(4-chloro-4-oxo-butanoyl)oxymethyl]butoxymethyl]-2-[(4-chloro-4-oxo-butanoyl)oxymethyl]butyl] 4-chloro-4-oxo-butanoate, 2,2-bis[(2-chlorocarbonylbenzoyl)oxymethyl]butyl 2-chlorocarbonyl-benzoate, [2-[2,2-bis[(2-chlorocarbonylbenzoyl)oxymethyl]butoxymethyl]-2-[(2- chlorocarbonylbenzoyl)oxymethyl]butyl] 2-chlorocarbonylbenzoate, 4-(2,4,5-trichlorocarbonylbenzoyl)oxybutyl 2,4,5-trichlorocarbonyl-benzoate, and mixtures thereof.

[0172] According to an embodiment, the acrylate crosslinker comprises at least two, preferably at least three reactive acrylate groups.

[0173] According to an embodiment, the acrylate crosslinker is selected from the group consisting of pentaerythritol-tetraacrylate, pentaerythritol triacrylate (PETIA), 1,4-butanediol diacrylate (BDA-2), ethylene glycol dimethacrylate, trimethylolpropane triacrylate, hexane diol diacrylate, ((2,4,6-trioxocyclohexane-l,3,5- triyl)tris(oxy))tris(ethane-2,l-diyl) triacrylate, tris(2-acryloyloxyethyl) isocyanurate, 1,3,5- triacryloylhexahydro-1.3.5-triazine, and mixtures thereof.

[0174] According to an embodiment, the methacrylate crosslinker comprises at least two, preferably at least three reactive methacrylate groups.

[0175] According to an embodiment, the methacrylate crosslinker is selected from the group consisting of pentaerythritol tri(meth)acrylate, trimethylolpropane tri(meth)acrylate, pentaerytrithol tetra(meth)acrylate, Tetra(ethylene glycol) di(meth)acrylate, dipentaerytrhitol penta(meth)acryalate, dipentaerytrithol hexa(meth)acrylate, tricyclodecane dimenthanol di(meth)acrylate, ethylene glycol di(meth)acrylate, di(ethylene glycol) di(meth)acrylate, tri ethylene glycol di(meth)acrylate, propylene glycol di(meth)acrylate, 1,4-butanediol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, glycerol di(meth)acrylate, 1,3-butanediol di(meth)acrylate, neopentyl glycol di(meth)acrylate, 1,10-decanediol di(meth)acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, di pentaerythritol hexa(meth)acrylate, triallylformal tri(meth)acrylate, allyl methacrylate, trimethylol propane tri(meth)acrylate, tributanediol di(meth)acrylate, PEG 200 di(meth)acrylate, PEG 400 di(meth)acrylate, PEG 600 di(meth)acrylate and mixtures thereof.

[0176] According to an embodiment, the functional silane, comprises at least one, preferably at least two preferably, even more preferably at least three functional groups that can react with the first and / or the second polyelectrolyte. According to an embodiment, the functional silane is selected from the group consisting of tetraethyl orthosilicate (TEOS), tetramethyl orthosilicate (TMOS), Triethoxymethylsilane, dimethyldimethoxysilane, ethyltriethoxysilane, polyalkoxy silanes, triethoxy-n-octylsilane, dodecyltriethoxysilane, octadecyltriethoxysilane, decyltriethoxysilane, n-hexyltriethoxysilane and hexadecyltriethoxysilane, a functional silane containing at least one functional group, such as thiol, amine, isocyanate, epoxide, (meth) acrylate, vinyl. Thiosilane monomers, such as 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, (3-mercaptopropyl)methyldimethoxysilane, 11 -mercaptoundecyltrimethoxysilane amine functionalized silanes, (3-aminopropyl)triethoxysilane, (3-aminopropyl)trimethoxysilane, N-(2-aminoethyl)-3-aminopropyltriethoxysilane, N-Dimethyl-3-aminopropylmethyldimethoxysilane, 3-aminopropylmethyldiethoxysilane, 4-Aminobutylthiethoxysilane, and mixtures thereof.

[0177] According to an embodiment, the crosslinker may be selected from the group consisting of multi-functionalized aldehydes or multi-functionalized anhydrides. Examples of multifunctionalized aldehydes that may be used in the present invention can be selected from the group consisting of terephthalaldehyde, 2,5-diformylfuran, 1,3-phthalaldehyde, genipin, or other preferably naturally occurring or derived multi-functionalized aldehydes, or mixtures thereof. Examples of multi-functionalized anhydrides that may be used in the present invention can be selected from the group consisting of poly(styrene-co-maleic anhydride), pyromellitic dianhydride, poly(ethylene-alt-maleic anhydride), 3,3',4,4'-biphenyltetracarboxylic acid dianhydride, bicyclo[2.2.2]oct-7-ene-2,3,5,6-tetracarboxylic acid dianhydride, polyisoprene-graft-maleic anhydride, benzophenonetetracarboxylic acid dianhydride, ethylenediaminetetraacetic dianhydride, bis-(3-phthalyl anhydride) ether, diethylenetriaminepentaacetic dianhydride, poly(methyl vinyl ether-alt-maleic anhydride), ethylene glycol bis(4-trimellitate anhydride), poly(maleicanhydride-alt-l-ocatdecene), or other, preferably naturally occurring or derived, multi-functionalized anhydrides, such as terpenic anhydrides, or mixtures thereof.

[0178] According to a preferred embodiment, the hydrophobic phase does not comprise polyisocyanate as a crosslinker.

[0179] According to another embodiment, the hydrophobic phase as described herein above does not comprise a crosslinker. According to an embodiment, the crosslinker may be present in an amount of at least 0.01 wt%, preferably of at least 0.05 wt%, even more preferably of at least 0.1 wt%, based on the total weight of the composition.

[0180] According to an embodiment, the crosslinker may be present in an amount of less than or equal to 1 wt%, preferably of less than or equal to 0.5 wt%, even more preferably of less than or equal to 0.4 wt%, based on the total weight of the composition.

[0181] According to an embodiment, the crosslinker may be present in an amount ranging from 0.01 to 1 wt%, preferably in an amount of 0.05 to 0.5 wt%, even more preferably in an amount of 0.1 to 0.4 wt% based on the total weight of the composition.

[0182] According to another embodiment, the crosslinker may be a combination of a first crosslinker as described herein above and a second crosslinker.

[0183] According to another embodiment, the first crosslinker may be added to the hydrophobic phase, whereas a second crosslinker may be added to the hydrophobic phase and / or the aqueous phase.

[0184] According to another preferred embodiment, the second crosslinker when added to the hydrophobic phase may be any crosslinker as defined herein above as the first crosslinker.

[0185] According to a preferred embodiment, such second crosslinker may be a phenolic compound. Said phenolic compound as used herein as a second crosslinker may be a monofunctionalized phenolic compound or a compound with several phenolic groups, such as a phenol or polyphenol containing compound selected from the group consisting of phenol, flavonoids, phenolic acids, polyphenolic amides, phenolic glycosides, stilbenes, lignans, curcuminoids, or mixtures thereof.

[0186] According to another preferred embodiment, when the second crosslinker is a phenolic compound as defined herein above, said second crosslinker is added to the aqueous phase. According to another preferred embodiment, a first crosslinker is added to the hydrophobic phase and a second crosslinker is added to the aqueous phase.

[0187] According to another preferred embodiment, a crosslinker, preferably the second crosslinker, is added to the aqueous phase, preferably said crosslinker, more preferably said second crosslinker, is not added to the hydrophobic phase.

[0188] According to a preferred embodiment, the crosslinker is a combination of the first crosslinker as described herein above that is added to the hydrophobic phase and a second crosslinker being a phenol or polyphenol containing compound or mixtures of such phenol or polyphenol containing compounds that is added to the aqueous phase.

[0189] According to another embodiment, the crosslinker comprising a combination of the first crosslinker as described above and a second crosslinker may be present in the same amounts as the crosslinker alone as described herein above.

[0190] All definitions and embodiments related to the crosslinker apply mutatis mutandis to the first, the second crosslinker, and to the combination of the first crosslinker and the second crosslinker, wherein the second crosslinker is preferably a phenol or polyphenol containing compound.

[0191] According to another preferred embodiment, the second crosslinker is selected from the group consisting of phenol, arbutin, resorcinol, phloroglucinol, gallic acid, epigallocatechin gallate, tea polyphenol, polydatin, rutin, tannin, lignin, or mixtures thereof.

[0192] According to another preferred embodiment, the second crosslinker is added to the aqueous phase and is selected from the group consisting of phenol, arbutin, resorcinol, phloroglucinol, gallic acid, epigallocatechin gallate, tea polyphenol, polydatin, rutin, tannin, lignin, or mixtures thereof.

[0193] According to another preferred embodiment, the second crosslinker added to the aqueous phase is the only crosslinker and is preferably a phenolic compound, more preferably said crosslinker is selected from the group consisting of phenol, arbutin, resorcinol, phloroglucinol, gallic acid, epigallocatechin gallate, tea polyphenol, polydatin, rutin, tannin, lignin, or mixtures thereof.

[0194] According to another preferred embodiment, said second or only crosslinker added to the aqueous phase may be added in step (a) and / or in step (b), preferably said second or only crosslinker is added to the aqueous phase together with the first polyelectrolyte in step (a) and / or together with a or said second polyelectrolyte in step (b).

[0195] Further embodiments

[0196] According to an embodiment, the pH value of the mixture of step (a) and / or (b) is adjusted to a pH < 9, preferably to a pH < 7, even more preferably to a pH < 5.

[0197] According to a preferred embodiment, the pH value of the mixture of step (a) and / or (b) is adjusted to a pH = 4.

[0198] According to an embodiment, the mixture is obtained in step (b) in a temperature range from about 5-100°C, preferably in the range of about 20-90°C, more preferably in a temperature range from about 20-70°C.

[0199] According to a preferred embodiment, the mixture is obtained in step (b) in a temperature range of at least 20°C to about 90°C, more preferably of at least 20°C to about 70°C.

[0200] Core-shell microcapsule

[0201] A second aspect of the invention relates to a core-shell microcapsule comprising

[0202] • an oil-based core comprising a hydrophobic material, preferably a perfume or a flavor oil, and

[0203] • a polymeric shell comprising a crosslinked first polyelectrolyte and, optionally, second polyelectrolyte having an opposite net charge to the first polylelectrolyte, wherein the crosslinking is at least partly achieved by an oxidoreductase,

[0204] optionally, wherein the polymeric shell further comprises polyurea, polyurethane, polyamide, polyester, polyimine, polyacrylate, poly methacrylate, polysiloxane or mixtures thereof. All definitions and embodiments related to the first aspect of the invention apply mutatis mutandis for the second aspect of the invention.

[0205] In the context of the present invention, the terms “polyurea”, “polyurethane”, “polyamide”, “polyester”, “polyimine”, “polyacrylate”, ’’polymethacrylate”, and “polysiloxane” are defined to encompass not only conventional polymers composed of multiple repeating units but also to include specific functional groups within macromolecules. These terms are used broadly to refer to both traditional polymeric materials and to various macromolecular structures comprising at least 15 of these functional groups, regardless of whether they comprise numerous repeating units thereof.

[0206] The term “polyurea” encompasses both traditional polyurea polymers, which consist of multiple repeating urea units, and macromolecules comprising at least 15 urea groups as functional elements, regardless of the number of repeating urea units.

[0207] The term “polyurethane” or “poly urethane” encompasses both traditional polyurethane polymers with consists of multiple repeating urethane units, and macromolecules comprising at least 15 urethane groups as functional elements, regardless of the number of repeating urethane units.

[0208] The term “polyamide” or “poly amide” includes traditional polyamide polymers with consist of multiple repeating amide units, as well as macromolecules comprising at least 15 amide groups as functional elements, regardless of the number of repeating amide units.

[0209] The term ’’polyacrylate” or “poly acrylate” includes traditional polyacrylate polymers with multiple repeating acrylate units, as well as macromolecules comprising at least 15 acrylate groups as functional elements, regardless of the number of repeating acrylate units.

[0210] The term “polymethacrylate” or “poly methacrylate” includes traditional polymethacrylate polymers with multiple repeating methacrylate units, as well as macromolecules comprising at least 15 methacrylate groups as functional elements, regardless of the number of repeating methacrylate units. The term “polysiloxane” or “poly siloxane” includes conventional polysiloxane polymers with multiple repeating siloxane units, as well as macromolecules comprising at least 15 siloxane groups as functional elements, regardless of the number of repeating siloxane units.

[0211] According to an embodiment, the terms “polyurea”, “polyurethane”, “polyamide”, “polyacrylate”, ’’polymethacrylate”, and “polysiloxane” encompass only conventional polymers.

[0212] According to an embodiment, the terms “polyurea”, “polyurethane”, “polyamide”, “polyacrylate”, ’’polymethacrylate”, and “polysiloxane” encompass only specific functional groups within macromolecules and not conventional polymers.

[0213] According to an embodiment, the core-shell microcapsule is obtained by a process according to the first aspect of the invention.

[0214] According to an embodiment, the polymeric shell of the core-shell microcapsule is obtained by crosslinking.

[0215] According to an embodiment, the crosslinking is achieved by an enzyme, preferably by an oxidoreductase.

[0216] According to an embodiment, the first polyelectrolyte is one reactant of the crosslinking process.

[0217] According to an embodiment, the second polyelectrolyte is one reactant of the crosslinking process.

[0218] According to an embodiment, the first and the second polyelectrolyte are reactants of the crosslinking process.

[0219] According to an embodiment, at least one crosslinking site of the first polyelectrolyte is a phenolic carbon.

[0220] According to an embodiment, at least one crosslinking site of the second polyelectrolyte is a phenolic carbon.

[0221] According to an embodiment, at least one crosslinking site of the first and / or the second polyelectrolyte is a phenolic carbon. According to an embodiment, the polymeric shell of the core-shell microcapsule is obtained by crosslinking, wherein the first polyelectrolyte is one reactant of the crosslinking process and wherein a phenolic carbon of the first polyelectrolyte is the at least one crosslinking site.

[0222] According to an embodiment, the polymeric shell of the core-shell microcapsule is obtained by crosslinking, wherein the second polyelectrolyte is one reactant of the crosslinking process and wherein a phenolic carbon of the second polyelectrolyte is the at least one crosslinking site.

[0223] According to an embodiment, the polymeric shell of the core-shell microcapsule is obtained by crosslinking, wherein the first and the second polyelectrolyte are reactants of the crosslinking process and wherein a phenolic carbon of the first and / or the second polyelectrolyte is the at least one crosslinking site.

[0224] In the context of the present invention, a "crosslinking site" is defined as a specific location or functional group within a polymer or macromolecule where covalent bonds are formed during the crosslinking process. These sites are the reactive points at which crosslinking agents or crosslinkers interact with the polymer chains to establish a network of interconnected structures.

[0225] In the context of the present invention, "phenolic carbon" is defined as the carbon atom within a phenolic group, which is an aromatic hydroxyl group attached to a benzene ring.

[0226] According to an embodiment, a crosslinker as defined in the first aspect of the invention is further used in the crosslinking process to form a polymeric shell of the core-shell microcapsule.

[0227] According to an embodiment, the core-shell microcapsule comprises at least 0.1 wt% of the polyelectrolyte(s).

[0228] According to an embodiment, the core-shell microcapsule comprises less than or equal to 20 wt%, preferably less than or equal to 10 wt% of the polyelectrolyte(s).

[0229] According to an embodiment, the core-shell microcapsule comprises the polyelectrolyte(s) in the range of 0.1 to 20% by weight, preferably by 0.1 to 10% by weight. In a particular embodiment, the shell material is a biodegradable material.

[0230] In a particular embodiment, the shell has a biodegradability of at least 60%, preferably at least 65%, 70%, 75%, 80%, 85%, 90%, 95% or 98%, within 60 days according to OECD301F.

[0231] In a particular embodiment, the core-shell microcapsule has a biodegradability of at least 40 %, preferably at least 60 %, preferably at least 65%, 70%, 75%, 80%, 85%, 90%, 95% or 98% within 60 days according to OECD301 F.

[0232] Thereby it is understood that the core-shell microcapsule including all components, such as the core, shell and optionally coating may have a biodegradability of at least 40 %, preferably at least 60 %, preferably at least 65%, 70%, 75%, 80%, 85%, 90%, 95% or 98% within 60 days according to OECD301F.

[0233] In a particular embodiment, the oil core, preferably perfume oil, has a biodegradability of at least 40 %, preferably at least 60 %, preferably at least 65%, 70%, 75%, 80%, 85%, 90%, 95% or 98% within 60 days according to OECD301 F.

[0234] OECD301F is a standard test method on the biodegradability from the Organization of Economic Co-operation and Development.

[0235] A typical method for extracting the shell for measuring the biodegradability is disclosed in Gasparini et al. in Molecules 2020, 25,718.

[0236] Another object is a slurry comprising the microcapsules as defined above.

[0237] A slurry is a semi-liquid mixture that typically consists of fine solid particles suspended in a liquid. The solids in a slurry can range from small to very fine particles, and the liquid is often water but can be any other liquid depending on the application.

[0238] Optional Components

[0239] According to an embodiment, the microcapsule slurry comprises auxiliary ingredients selected from the group of thickening agents / rheology modifiers, preservatives agents, antimicrobial agents, opacity-building agents, mica particles, salt, pH stabilizers / buffering ingredients, preferably in an amount comprised between 0 and 15%, more preferably between 0.1 and 10%, even more preferably between 0.05 and 5% by weight based on the total weight of the slurry. Among the different thickening agents, one may cite for example anionic, cationic, nonionic or zwitter-ionic copolymers, for instance, but not limited to polyacrylamide, polyacrylate, polyacryloyldimethyl taurate, polyquaternium-37, or carbomer and mixtures thereof. According to a particular embodiment, the thickening agent is xanthan gum, guar gum, diutan gum or mixtures thereof.

[0240] Among the different preservative agents, one may cite for example sodium benzoate, benzoic acid, benzisothiazolinone, methylchloroisothiazolinone, methylisothiazolinone, chlorhexidine digluconate, sodium hydroxymethylglycinate, parabens, triclosan, phenoxyethanol, caprylhydroxamic acid, potassium sorbate, lactic acid, E-polylysine, caprylyl glycol, capryl hydroxamic acid, glycerin, glyceryl caprylate, ethylhexyl glycerin and mixtures thereof.

[0241] According to another embodiment, the microcapsule slurry of the invention comprises additional free (i.e non-encapsulated) perfume, preferably in an amount comprised between 5 and 50% by weight based on the total weight of the slurry.

[0242] Outer coating

[0243] According to a particular embodiment of the invention, the microcapsule comprises an outer coating, wherein the outer coating comprises a coating material selected from the group consisting of a non-ionic polymer (such as non-ionic polysaccharide), anionic polymer (such as polysaccharide), a cationic polymer, a polysuccinimide derivative (as described for instance in WO2021185724) and mixtures thereof to form an outer coating to the microcapsule.

[0244] According to a particular embodiment, the microcapsule does not comprise an outer coating.

[0245] Non-ionic polysaccharide polymers are well known to a person skilled in the art and are described for instance in W02012 / 007438 page 29, lines 1 to 25 and in WO2013 / 026657 page 2, lines 12 to 19 and page 4, lines 3 to 12. Preferred non-ionic polysaccharides are selected from the group consisting of locust bean gum, xyloglucan, guar gum, hydroxypropyl guar, hydroxypropyl cellulose and hydroxypropyl methyl cellulose.

[0246] Cationic polymers are well known to a person skilled in the art. Preferred cationic polymers have cationic charge densities of at least 0.5 meq / g, more preferably at least about 1.5 meq / g, but also preferably less than about 7 meq / g, more preferably less than about 6.2 meq / g. The cationic charge density of the cationic polymers may be determined by the Kjeldahl method as described in the US Pharmacopoeia under chemical tests for Nitrogen determination. The preferred cationic polymers are chosen from those that contain units comprising primary, secondary, tertiary and / or quaternary amine groups that can either form part of the main polymer chain or can be borne by a side substituent directly connected thereto. The weight average (Mw) molecular weight of the cationic polymer is preferably between 10,000 and 3.5M Dalton, more preferably between 50,000 and 1.5M Dalton. According to a particular embodiment, one will use cationic polymers based on acrylamide, methacrylamide, N-vinylpyrrolidone, quaternized N,N-dimethylaminomethacrylate, diallyldimethylammonium chloride, quaternized vinylimidazole (3-methyl-1 -vinyl-1 H-imidazol-3-ium chloride), vinylpyrrolidone, acrylamidopropyltrimonium chloride, cassia hydroxypropyltrimonium chloride, guar hydroxypropyltrimonium chloride or polygalactomannan 2-hydroxypropyltrimethylammonium chloride ether, starch hydroxypropyltrimonium chloride and cellulose hydroxypropyltrimonium chloride. Preferably copolymers shall be selected from the group consisting of polyquaternium-5, polyquaternium-6, polyquaternium-7, polyquaterniumIO, polyquaternium-11, polyquaternium-16, polyquaternium-22, polyquaternium-28, polyquaternium-43, polyquaternium-44, polyquaternium-46, cassia hydroxypropyltrimonium chloride, guar hydroxypropyltrimonium chloride or polygalactomannan 2-hydroxypropyltrimethylammonium chloride ether, starch hydroxypropyltrimonium chloride and cellulose hydroxypropyltrimonium chloride. As specific examples of commercially available products, one may cite Salcare® SC60 (cationic copolymer of acrylamidopropyltrimonium chloride and acrylamide, origin: BASF) or Luviquat®, such as the PQ 11N, FC 550 or Style (polyquaternium-11 to 68 or quaternized copolymers of vinylpyrrolidone origin: BASF), or also the Jaguar® (C13S or C17, origin Rhodia).

[0247] According to any one of the above embodiments of the invention, there is added an amount of polymer described above comprised between about 0% and 5% w / w, or even between about 0.1% and 2% w / w, percentage being expressed on a w / w basis relative to the total weight of the slurry. It is clearly understood by a person skilled in the art that only part of said added polymers will be incorporated into / deposited on the microcapsule shell.

[0248] Multiple microcapsule system

[0249] According to an embodiment, the microcapsules of the invention (first microcapsule slurry) can be used in combination with a second microcapsule (second microcapsule slurry). Another object of the invention is a microcapsule delivery system comprising:

[0250] the microcapsule of the present invention in the form of a first microcapsule slurry, and a second microcapsule in the form of a second microcapsule slurry, wherein the microcapsules contained in the first microcapsule slurry and the second microcapsule slurry differ in their hydrophobic material and / or their wall material and / or content of wall material and / or in the curing conditions to form the wall material and / or in their coating material.

[0251] According to a particular embodiment, the microcapsule delivery system is in the form of a slurry.

[0252] The wall of the second type of microcapsules can vary. As non-limiting examples, the polymer shell of the second type of microcapsules comprises a material selected from the group consisting of polyurea, polyurethane, polyamide, polyhydroxyalkanoates, polyacrylate, polyesters, polyaminoesters, polyepoxides, polysiloxane, polycarbonate, polysulfonamide, urea formaldehyde, melamine formaldehyde resin, melamine formaldehyde resin crosslinked with polyisocyanate or aromatic polyols, melamine urea resin, melamine glyoxal resin, gelatin / gum arabic shell wall, and mixtures thereof.

[0253] The second type of microcapsule can comprise an oil-based core comprising a hydrophobic active, preferably perfume, and a composite shell comprising a first material and a second material, wherein the first material and the second material are different, the first material is a coacervate, the second material is a polymeric material. In a particular embodiment, the weight ratio between the first material and the second material is comprised between 50:50 and 99.9:0.1. In a particular embodiment, the coacervate comprises a first polyelectrolyte, preferably selected among proteins (such as defined above), polypeptides or polysaccharides (such as chitosan), most preferably gelatin and a second polyelectrolyte, preferably alginate salts, cellulose derivatives, guar gum, pectinate salts, carrageenan, polyacrylic and methacrylic acid orxanthan gum, or yet plant gums such as acacia gum (Gum Arabic), most preferably Gum Arabic. The coacervate first material can be hardened chemically using a suitable crosslinker such as glutaraldehyde, glyoxal, formaldehyde, tannic acid or genipin or can be hardened enzymatically using an enzyme such as transglutaminase. The second polymeric material can be selected from the group consisting of polyurea, polyurethane, polyamide, polyester, polyacrylate, polysiloxane, polycarbonate, polysulfonamide, polymers of urea and formaldehyde, melamine and formaldehyde, melamine and urea, or melamine and glyoxal and mixtures thereof, preferably polyurea and / or polyurethane. The second material is preferably present in an amount less than 3 wt%, preferably less than 1 wt% based on the total weight of the second type of microcapsule slurry.

[0254] As non-limiting examples, the shell of the second type of microcapsules can be aminoplast-based, polyurea-based or polyurethane-based. The shell of the second type of microcapsules can also be hybrid, namely organic-inorganic such as a hybrid shell composed of at least two types of inorganic particles that are crosslinked, or yet a shell resulting from the hydrolysis and condensation reaction of a polyalkoxysilane macro-monomeric composition.

[0255] According to an aspect, the shell of the second type of microcapsules comprises an aminoplast copolymer, such as melamine-formaldehyde or urea-formaldehyde or crosslinked melamine formaldehyde or melamine glyoxal.

[0256] According to another aspect, the shell of the second type of microcapsules is polyurea-based made from, for example but not limited to isocyanate-based monomers and amine-containing crosslinkers such as guanidine carbonate and / or guanazole. Certain polyurea microcapsules comprise a polyurea wall which is the reaction product of the polymerisation between at least one polyisocyanate comprising at least two isocyanate functional groups and at least one reactant selected from the group consisting of an amine (for example a water-soluble guanidine salt and guanidine); a colloidal stabilizer or emulsifier; and an encapsulated perfume. However, the use of an amine can be omitted. According to a particular aspect, the colloidal stabilizer includes an aqueous solution of between 0.1% and 0.4% of polyvinyl alcohol, between 0.6% and 1% of a cationic copolymer of vinylpyrrolidone and of a quaternized vinylimidazol (all percentages being defined by weight relative to the total weight of the colloidal stabilizer). According to another aspect, the emulsifier is an anionic or amphiphilic biopolymer, which may be, in one aspect, chosen from the group consisting of gum Arabic, soy protein, gelatin, sodium caseinate and mixtures thereof.

[0257] According to another embodiment, the microcapsule wall material of the second type of microcapsules may comprise any suitable resin and especially including melamine, glyoxal, polyurea, polyurethane, polyamide, polyester, etc. Suitable resins include the reaction product of an aldehyde and an amine, suitable aldehydes include formaldehyde and glyoxal. Suitable amines include melamine, urea, benzoguanamine, glycoluril, and mixtures thereof. Suitable melamines include, methylol melamine, methylated methylol melamine, imino melamine and mixtures thereof. Suitable ureas include, dimethylol urea, methylated dimethylol urea, urearesorcinol, and mixtures thereof. Suitable materials for making may be obtained from one or more of the following companies Solutia Inc. (St Louis, Missouri U.S.A.), Cytec Industries (West Paterson, New Jersey U.S.A.), Sigma-Aldrich (St. Louis, Missouri U.S.A.).

[0258] According to another embodiment, the second type of microcapsules is an aminoplast core-shell microcapsule obtainable by a process comprising the steps of:

[0259] 1) admixing a perfume oil with at least a polyisocyanate having at least two isocyanate functional groups to form an oil phase;

[0260] 2) dispersing or dissolving into water an aminoplast resin and optionally a stabilizer to form a water phase;

[0261] 3) preparing an oil-in-water dispersion, wherein the mean droplet size is comprised between 1 and 100 microns, by admixing the oil phase and the water phase;

[0262] 4) performing a curing step to form the wall of said microcapsule; and

[0263] 5) optionally drying the final dispersion to obtain the dried core-shell microcapsule.

[0264] According to an embodiment, the second type of microcapsules is a formaldehyde-free capsule. A typical process for the preparation of aminoplast formaldehyde-free microcapsules slurry comprises the steps of

[0265] 1) preparing an oligomeric composition comprising the reaction product of, or obtainable by reacting together:

[0266] a. a polyamine component in the form of melamine or of a mixture of melamine and at least one C-|-C4compound comprising two NH2functional groups; b. an aldehyde component in the form of a mixture of glyoxal, a C4_C62,2- dialkoxy-ethanal and optionally a glyoxalate, said mixture having a molar ratio glyoxal / C4_C62,2-dialkoxy-ethanal comprised between 1 / 1 and10 / 1; and c. a protic acid catalyst;

[0267] 2) preparing an oil-in-water dispersion, wherein the droplet size is comprised between 1 and 600 microns, and comprising: a. an oil;

[0268] b. a water medium:

[0269] c. at least an oligomeric composition as obtained in step 1;

[0270] d. at least a crosslinker selected amongst:

[0271] i. C4-C12aromatic or aliphatic di- or tri-isocyanates and their biurets, triurets, trimmers, trimethylol propane-adduct and mixtures thereof; and / or

[0272] ii. a di- or tri-oxiran compounds of formula:

[0273] A-(oxiran-2-ylmethyl)n

[0274] whereinnstands for 2 or 3 and 1 represents a C2-C6group optionally comprising from 2 to 6 nitrogen and / or oxygen atoms;

[0275] e. optionally a C-|-C4compounds comprising two NH2functional groups; 3) heating the dispersion; and

[0276] 4) cooling the dispersion.

[0277] In another particular embodiment, the second type of microcapsules comprises an oil-based core comprising a hydrophobic active, preferably perfume, optionally an inner shell made of a polymerized polyfunctional monomer;

[0278] a biopolymer shell comprising a protein, wherein at least one protein is crosslinked.

[0279] According to a particular embodiment, the protein is chosen in the group consisting of milk proteins, caseinate salts such as sodium caseinate or calcium caseinate, casein, whey protein, hydrolyzed proteins, gelatins, gluten, pea protein, potato protein, soy protein, silk protein and mixtures thereof, preferably sodium caseinate, most preferably sodium caseinate.

[0280] According to a particular embodiment, the protein comprises sodium caseinate and a globular protein, preferably chosen in the group consisting of whey protein, beta-lactoglobulin, ovalbumine, bovine serum albumin, vegetable or plant-based proteins, such as potato protein, and mixtures thereof.

[0281] The protein is preferably a mixture of sodium caseinate and whey protein or plant-based proteins, such as potato protein. According to a particular embodiment, the biopolymer shell comprises a crosslinked protein chosen in the group consisting of sodium caseinate and / or whey protein or vegetable proteins, such as potato protein.

[0282] According to a particular embodiment, the second type of microcapsules made of: an oil-based core comprising the hydrophobic active, preferably perfume;

[0283] an inner shell made of a polymerized polyfunctional monomer; preferably a polyisocyanate having at least two isocyanate functional groups

[0284] a biopolymer shell comprising a protein, wherein at least one protein is crosslinked; wherein the protein contains preferably a mixture comprising sodium caseinate and a globular protein, preferably whey protein or a plant-based protein, such as potato protein.

[0285] optionally at least an outer mineral layer.

[0286] According to an embodiment, sodium caseinate and / or whey protein or a plant-based protein, such as potato protein, is (are) crosslinked protein(s).

[0287] The weight ratio between sodium caseinate and whey protein or plant-based proteins, such as potato protein, is preferably comprised between 0.01 and 100, preferably between 0.1 and 10, more preferably between 0.2 and 5.

[0288] In another particular embodiment, the second type of microcapsules is a polyamide core-shell polyamide microcapsule comprising:

[0289] an oil-based core comprising a hydrophobic active, preferably perfume, and a polyamide shell comprising or being obtainable from:

[0290] • an acyl chloride,

[0291] • a first amino compound,

[0292] • a second amino compound,

[0293] • optionally, a carbohydrate

[0294] According to a particular embodiment, the second type of microcapsules comprises:

[0295] an oil-based core comprising a hydrophobic active, preferably perfume, and a polyamide shell comprising or being obtainable from: • an acyl chloride, preferably in an amount comprised between 5 and 98%, preferably between 20 and 98%, more preferably between 30 and 85% w / w • a first amino compound, preferably in an amount comprised between 1% and 50% w / w, preferably between 7 and 40% w / w;

[0296] • a second amino compound, preferably in an amount comprised between 1 % and 50% w / w, preferably between 2 and 25% w / w

[0297] • a stabilizer, preferably a biopolymer, preferably in an amount comprised between 0 and 90%, preferably between 0.1 and 75%, more preferably between 1 and 70%,

[0298] • optionally, a carbohydrate.

[0299] According to a particular embodiment, the second type of microcapsules comprises:

[0300] an oil-based core comprising a hydrophobic active, preferably perfume, and a polyamide shell comprising or being obtainable from:

[0301] an acyl chloride,

[0302] • a first amino-compound being an amino-acid, preferably chosen in the group consisting of L-Lysine, L-Arginine, L-Histidine, L-Tryptophane and / or mixtures thereof.

[0303] • a second amino-compound, preferably chosen in the group consisting of ethylene diamine, diethylene triamine, cystamine and / or mixtures thereof, and

[0304] • a biopolymer, preferably chosen in the group consisting of potato protein, chickpea protein, pea protein, algae protein, faba bean protein, barley protein, oat protein, wheat gluten protein, lupin protein, soy protein, rice protein, whey protein, white egg albumin, casein, sodium caseinate, gelatin (preferably fish gelatin), bovine serum albumin, hydrolyzed soy protein, hydrolyzed sericin, pseudocollagen, silk protein, sericin powder, and mixtures thereof,

[0305] • optionally a carbohydrate, preferably selected from the group consisting of anionic salt of alginic acid, preferably alginic acid sodium salt, pectin, lignin, anionic modified starch, carboxymethylcellulose, carrageenan and mixtures thereof. According to another aspect, the shell of the second type of microcapsules is polyurea-or polyurethane-based. Examples of processes for the preparation of polyurea and polyurethane-based microcapsule slurry are for instance described in International Patent Application Publication No. W02007 / 004166, European Patent Application Publication No. EP 2300146, and European Patent Application Publication No. EP25799. Typically, a process for the preparation of polyurea or polyurethane-based microcapsule slurry include the following steps:

[0306] a) Dissolving at least one polyisocyanate having at least two isocyanate groups in an oil to form an oil phase;

[0307] b) Preparing an aqueous solution of an emulsifier or colloidal stabilizer to form a water phase;

[0308] c) Adding the oil phase to the water phase to form an oil-in-water dispersion, wherein the mean droplet size is comprised between 1 and 500 pm, preferably between 5 and 50 pm; and

[0309] d) Applying conditions sufficient to induce interfacial polymerisation and form microcapsules in form of a slurry.

[0310] Microcapsule powder

[0311] Another object of the invention is a microcapsule powder obtained by submitting the microcapsule slurry of the invention or the multiple microcapsule system to a drying, like spraydrying, to provide the microcapsules as such, i.e. in a powdery form. It is understood that any standard method known by a person skilled in the art to perform such drying is also applicable. In particular the slurry may be spray-dried preferably in the presence of a polymeric carrier material such as polyvinyl acetate, polyvinyl alcohol, dextrins, natural or modified starch, gum Arabic, vegetable gums, pectins, xanthans, alginates, carrageenans or cellulose derivatives to provide microcapsules in a powder form.

[0312] However, one may cite also other drying method such as the extrusion, plating, spray granulation, the fluidized bed, or even a drying at room temperature using materials (carrier, desiccant) that meet specific criteria as disclosed in WO2017 / 134179.

[0313] According to a particular embodiment, the carrier material contains free perfume oil which can be the same or different from the perfume from the core of the microcapsules.

[0314] Another object of the invention is a solid particle comprising: a carrier material,

[0315] microcapsules as defined above entrapped in said carrier material, and

[0316] optionally free perfume entrapped in said carrier material.

[0317] In a particular embodiment, the carrier material comprises a monomeric, oligomeric or polymeric carrier material, or mixtures of two or more of these.

[0318] An oligomeric carrier is a carrier wherein 2-10 monomeric units are linked by covalent bonds. For example, if the oligomeric carrier is a carbohydrate, the oligomeric carrier may be sucrose, lactose, raffinose, maltose, trehalose, fructo-oligosaccharides.

[0319] Examples of a monomeric carrier materials are glucose, fructose, mannose, galactose, arabinose, fucose, sorbitol, mannitol, for example.

[0320] Polymeric carriers have more than 10 monomeric units that are linked by covalent bonds.

[0321] In a particular embodiment, the carrier may be a polymeric carrier material. Non-limiting examples of polymeric carrier material includes polyaspartate, modified polysuccinimides, lignin and its derivatives, polyoxazoline, polyhydroxyalcanoates, polyphenols, natural and synthetic clays, polyvinyl acetates, polyvinyl alcohol, dextrines, maltodextrines, glucose syrups, natural or modified starch, polysaccharides, carbohydrates, chitosan, gum Arabic, polyethylene glycol, polyvinyl pyrrolidone, polyvinyl alcohol, acrylamides, acrylates, polyacrylic acid and related, maleic anhydride copolymers, amine-functional polymers, vinyl ethers, styrenes, polystyrenesulfonates, vinyl acids, ethylene glycol-propylene glycol block copolymers, vegetable gums, gum acacia, pectins, xanthanes, alginates, carragenans or cellulose derivatives, such as carboxymethyl methylcellulose, methylcellulose or hydroxyethyl cellulose; chitin, proteins (animal and plant-based), polyaspartate, poylsuccinimides and its derivatives, polyesters, polyaminoesters, polyhydroxyalkanoates, polycarbonates and mixtures thereof. Preferably the polymeric carrier material comprises natural or modified starch, maltodextrins, carbohydrates, chitin, proteins (animal and plant-based), polyaspartate, poylsuccinimides and its derivatives, polyesters, polyaminoesters, polyhydroxyalkanoates, polycarbonates and mixtures thereof.

[0322] According to an embodiment, the carrier material is chosen in the group consisting of polyvinyl acetate, polyvinyl alcohol, dextrins, natural or modified starch, vegetable gums, pectins, xanthans, alginates, carrageenans, cellulose derivatives and mixtures thereof. Solid particle as defined above and microcapsule powder can be used indifferently in the present invention.

[0323] Use of a core-shell microcapsule

[0324] In a third aspect, the present invention relates to the use of a core-shell microcapsule according to the second aspect of the invention to enhance, prolong, modify the olfactive effect of a perfume oil in a consumer product.

[0325] All definitions and embodiments related to the first and the second aspect of the invention apply mutatis mutandis for this aspect.

[0326] Perfuming Compositions and Consumer Products

[0327] In a fourth aspect, the present invention relates to a consumer product comprising • a consumer base and

[0328] • a core-shell microcapsule according to the second aspect of the invention, wherein the consumer product is preferably in the form of a home-care product or a personal care product.

[0329] All definitions and embodiments related to the first and the second aspect of the invention apply mutatis mutandis for this aspect of the invention.

[0330] According to an embodiment, the consumer product is a fabric softener, fabric conditioner, detergent, scent booster, fabric refresher spray, hair dye, hair moisturizer, skin moisturizer, hair treatment, skin treatment, antiperspirant, deodorant, insect repellant, candle, surface cleaner, bathroom cleaner, bleach, cat litter, refresher spray, pesticide, insecticide, herbicide, fungicide or paint.

[0331] The microcapsules of the invention can be used in combination with active ingredients. An object of the invention is therefore a composition comprising:

[0332] (i) microcapsules or microcapsule slurry as defined above;

[0333] (ii) an active ingredient, preferably chosen in the group consisting of a cosmetic ingredient, skin caring ingredient, perfume ingredient, flavor ingredient, malodor counteracting ingredient, bactericide ingredient, fungicide ingredient, pharmaceutical or agrochemical ingredient, a sanitizing ingredient, an insect repellent or attractant, and mixtures thereof.

[0334] The capsules of the invention show a good performance in terms of stability in challenging medium.

[0335] Another object of the present invention is a perfuming composition comprising:

[0336] (i) microcapsules or microcapsule slurry as defined above, wherein the oil comprises a perfume;

[0337] (ii) at least one ingredient selected from the group consisting of a perfumery carrier, a perfumery co-ingredient and mixtures thereof;

[0338] (iii) optionally at least one perfumery adjuvant.

[0339] As liquid perfumery carriers one may cite, as non-limiting examples, an emulsifying system, i.e. a solvent and a surfactant system, or a solvent commonly used in perfumery. A detailed description of the nature and type of solvents commonly used in perfumery cannot be exhaustive. However, one can cite as non-limiting examples solvents such as dipropylene glycol, diethyl phthalate, isopropyl myristate, benzyl benzoate, 2-(2-ethoxyethoxy)-1 -ethanol or ethyl citrate, which are the most commonly used. For the compositions which comprise both a perfumery carrier and a perfumery co-ingredient, other suitable perfumery carriers than those previously specified, can be also ethanol, water / ethanol mixtures, limonene or other terpenes, iso-paraffins such as those known under the trademark Isopar® (origin: Exxon Chemical) or glycol ethers and glycol ether esters such as those known under the trademark Dowanol® (origin: Dow Chemical Company). By “perfumery co-ingredient” it is meant here a compound, which is used in a perfuming preparation or a composition to impart a hedonic effect and which is not a microcapsule as defined above. In other words such a co-ingredient, to be considered as being a perfuming one, must be recognized by a person skilled in the art as being able to at least impart or modify in a positive or pleasant way the odor of a composition, and not just as having an odor.

[0340] The nature and type of the perfuming co-ingredients present in the perfuming composition do not warrant a more detailed description here, which in any case would not be exhaustive, the skilled person being able to select them on the basis of his general knowledge and according to the intended use or application and the desired organoleptic effect. In general terms, these perfuming co-ingredients belong to chemical classes as varied as alcohols, lactones, aldehydes, ketones, esters, ethers, acetates, nitriles, terpenoids, nitrogenous or sulfurous heterocyclic compounds and essential oils, and said perfuming co-ingredients can be of natural or synthetic origin. Many of these co-ingredients are in any case listed in reference texts such as the book by S. Arctander, Perfume and Flavor Chemicals, 1969, Montclair, New Jersey, USA, or its more recent versions, or in other works of a similar nature, as well as in the abundant patent literature in the field of perfumery. It is also understood that said co-ingredients may also be compounds known to release in a controlled manner various types of perfuming compounds. Co-ingredients may be chosen in the group consisting of 4-(dodecylthio)-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-2-butanone, 4-(dodecylthio)-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2-butanone, trans-3-(dodecylthio)-1-(2,6,6-trimethyl-3-cyclohexen-1-yl)-1-butanone, 2-(dodecylthio)octan-4-one, 2-phenylethyl oxo(phenyl)acetate, 3,7-dimethylocta-2,6-dien-1-yl oxo(phenyl)acetate, (Z)-hex-3-en-1-yl oxo(phenyl)acetate, 3,7-dimethyl-2,6-octadien-1-yl hexadecanoate, bis(3,7-dimethylocta-2,6-dien-1-yl) succinate, (2-((2-methylundec-1-en-1-yl)oxy)ethyl)benzene, 1-methoxy-4-(3-methyl-4-phenethoxybut-3-en-1-yl)benzene, (3-methyl-4-phenethoxybut-3-en-1-yl)benzene, 1-(((Z)-hex-3-en-1-yl)oxy)-2-methylundec-1-ene, (2-((2-methylundec-1-en-1-yl)oxy)ethoxy)benzene, 2-methyl-1-(octan-3-yloxy)undec-1 -ene, 1 -methoxy-4-(1 -phenethoxyprop-1 -en-2-yl)benzene, 1 -methyl-4-(1 -phenethoxyprop-1 -en-2-yl)benzene, 2-(1 -phenethoxyprop-1 -en-2-yl)naphthalene, (2-phenethoxyvinyl)benzene, 2-(1-((3,7-dimethyloct-6-en-1-yl)oxy)prop-1-en-2-yl)naphthalene, (2-((2-pentylcyclopentylidene)methoxy)ethyl)benzene, 4-allyl-2-methoxy-1-((2-methoxy-2-phenylvinyl)oxy)benzene, (2-((2-heptylcyclopentylidene)methoxy)ethyl)benzene, 1 -isopropyl-4-methyl-2-((2-pentylcyclopentylidene)methoxy)benzene, 2-methoxy-1-((2-pentylcyclopentylidene)methoxy)-4-propylbenzene, 3-methoxy-4-((2-methoxy-2-phenylvinyl)oxy)benzaldehyde, 4-((2-(hexyloxy)-2-phenylvinyl)oxy)-3-methoxybenzaldehyde or a mixture thereof or a mixture thereof.

[0341] By “perfumery adjuvant” we mean here an ingredient capable of imparting additional added benefit such as a color, a particular light resistance, chemical stability, etc. A detailed description of the nature and type of adjuvant commonly used in perfuming bases cannot be exhaustive, but it has to be mentioned that said ingredients are well known to a person skilled in the art.

[0342] Preferably, the perfuming composition according to the invention comprises between 0.01 and 30 % by weight of microcapsules or microcapsule slurry as defined above. The invention’s microcapsules can advantageously be used in many application fields and used in consumer products. Microcapsules can be used in liquid form applicable to liquid consumer products as well as in powder form, applicable to powder consumer products.

[0343] According to a particular embodiment, the consumer product as defined above is liquid and comprises:

[0344] a) from 2 to 65% by weight, relative to the total weight of the consumer product, of at least one surfactant;

[0345] b) water or a water-miscible hydrophilic organic solvent; and

[0346] c) a microcapsule slurry or microcapsules as defined above,

[0347] d) optionally non-encapsulated perfume.

[0348] According to a particular embodiment, the consumer product as defined above is in a powder form and comprises:

[0349] a) from 2 to 65% by weight, relative to the total weight of the consumer product, of at least one surfactant;

[0350] b) a microcapsule powder as defined above.

[0351] c) optionally perfume powder that is different from the microcapsules defined above.

[0352] In the case of microcapsules including a perfume oil-based core, the products of the invention, can in particular be of used in perfumed consumer products such as product belonging to fine fragrance or “functional” perfumery. Functional perfumery includes in particular personal-care products including hair-care, body cleansing, skin care, hygiene-care as well as home-care products including laundry care, surface care and air care. Consequently, another object of the present invention consists of a perfumed consumer product comprising as a perfuming ingredient, the microcapsules defined above or a perfuming composition as defined above. The perfume element of said consumer product can be a combination of perfume microcapsules as defined above and free or non-encapsulated perfume, as well as other types of perfume microcapsules than those here disclosed.

[0353] In particular a liquid consumer product comprising:

[0354] a) from 2 to 65% by weight, relative to the total weight of the consumer product, of at least one surfactant;

[0355] b) water or a water-miscible hydrophilic organic solvent; and

[0356] c) a perfuming composition as defined above is another object of the invention.

[0357] Also a powder consumer product comprising (a) from 2 to 65% by weight, relative to the total weight of the consumer product, of at least one surfactant; and

[0358] (b) a perfuming composition as defined above is part of the invention.

[0359] The invention’s microcapsules can therefore be added as such or as part of an invention’s perfuming composition in a perfumed consumer product.

[0360] For the sake of clarity, it has to be mentioned that, by “perfumed consumer product” it is meant a consumer product which is expected to deliver among different benefits a perfuming effect to the surface to which it is applied (e.g. skin, hair, textile, paper, or home surface) or in the air (air-freshener, deodorizer etc.). In other words, a perfumed consumer product according to the invention is a manufactured product which comprises a functional formulation also referred to as “base”, together with benefit agents, among which an effective amount of microcapsules according to the invention.

[0361] The nature and type of the other constituents of the perfumed consumer product do not warrant a more detailed description here, which in any case would not be exhaustive, the skilled person being able to select them on the basis of his general knowledge and according to the nature and the desired effect of said product. Base formulations of consumer products in which the microcapsules of the invention can be incorporated can be found in the abundant literature relative to such products. These formulations do not warrant a detailed description here which would in any case not be exhaustive. The person skilled in the art of formulating such consumer products is perfectly able to select the suitable components on the basis of his general knowledge and of the available literature.

[0362] Non-limiting examples of suitable perfumed consumer products can be a perfume, such as a fine perfume, a cologne, an after-shave lotion, a body-splash; a fabric care product, such as a liquid or solid detergent, tablets and unit dose (single or multi-chambers), a fabric softener, a dryer sheet, a fabric refresher, an ironing water, or a bleach; a personal-care product, such as a hair-care product (e.g. a shampoo, hair conditioner, a coloring preparation or a hair spray), a cosmetic preparation (e.g. a cream or lotion), or a skin-care product (e.g. a perfumed soap, shower or bath mousse, body wash, oil or gel, bath salts, or a hygiene product); an air care product, such as an air freshener or a “ready to use” powdered air freshener; or a home care product, such all-purpose cleaners, liquid or power or tablet dishwashing products, toilet cleaners or products for cleaning various surfaces, for example sprays & wipes intended for the treatment I refreshment of textiles or hard surfaces (floors, tiles, stone-floors etc.); a hygiene product such as sanitary napkins, diapers, toilet paper. Another object of the invention is a consumer product comprising:

[0363] a personal care active base, and

[0364] microcapsules or microcapsule slurry as defined above or the perfuming composition as defined above,

[0365] wherein the consumer product is in the form of a personal care composition.

[0366] Personal care active bases in which the microcapsules of the invention can be incorporated can be found in the abundant literature relative to such products. These formulations do not warrant a detailed description here which would in any case not be exhaustive. The person skilled in the art of formulating such consumer products is perfectly able to select the suitable components on the basis of his general knowledge and of the available literature.

[0367] The personal care composition is preferably chosen in the group consisting of a haircare product (e.g. a shampoo, hair conditioner, a coloring preparation or a hair spray), a cosmetic preparation (e.g. a cream or lotion), or a skin-care product (e.g. a perfumed soap, shower or bath mousse, body wash, oil or gel, bath salts, or a hygiene product);

[0368] Another object of the invention is a consumer product comprising:

[0369] a home care or a fabric care active base, and

[0370] microcapsules or microcapsule slurry as defined above or the perfuming composition as defined above,

[0371] wherein the consumer product is in the form of a home care or a fabric care composition.

[0372] Home care or fabric care active bases in which the microcapsules of the invention can be incorporated can be found in the abundant literature relative to such products. These formulations do not warrant a detailed description here which would in any case not be exhaustive. The person skilled in the art of formulating such consumer products is perfectly able to select the suitable components on the basis of his general knowledge and of the available literature.

[0373] Preferably, the consumer product comprises from 0.1 to 15 wt%, more preferably between 0.2 and 5 wt% of the microcapsules or microcapsule slurry of the present invention, these percentages being defined by weight relative to the total weight of the consumer product. Of course, the above concentrations may be adapted according to the benefit effect desired in each product. An object of the invention is a consumer product, preferably a home care or a fabric care consumer product comprising the microcapsules, or the microcapsule slurry as defined above, wherein the consumer product has a pH less than 7.

[0374] An object of the invention is a consumer product, preferably a home care or a fabric care consumer product comprising the microcapsules, or the microcapsule slurry as defined above, wherein the consumer product has a pH equals or greater than 7.

[0375] For liquid consumer product mentioned below, by “active base”, it should be understood that the active base includes active materials (typically including surfactants) and water.

[0376] For solid consumer product mention below, by “active base”, it should be understood that the active base includes active materials (typically including surfactants) and auxiliary agents (such as bleaching agents, buffering agent; builders; soil release or soil suspension polymers; granulated enzyme particles, corrosion inhibitors, antifoaming, sud suppressing agents; dyes, fillers, and mixtures thereof).

[0377] Fabric softener

[0378] An object of the invention is a consumer product in the form of a fabric softener composition comprising:

[0379] a fabric softener active base; preferably comprising at least one active material chosen in the group consisting of dialkyl quaternary ammonium salts, dialkyl ester quaternary ammonium salts (esterquats), Hamburg esterquat (HEQ) (1,2-stearoyl-3- trimethylammonium-propane (chloride salt)), TEAQ (triethanolamine quat), silicones and mixtures thereof, the active base being used preferably in an amount comprised between 85 and 99.95% by weight based on the total weight of the composition, a microcapsule slurry or microcapsules as defined above, preferably in an amount comprised between 0.05 to 15 wt%, more preferably between 0.1 and 5 wt% by weight based on the total weight of the composition,

[0380] optionally free perfume oil.

[0381] Liquid detergent

[0382] An object of the invention is a consumer product in the form of a liquid detergent composition comprising:

[0383] a liquid detergent active base; preferably comprising at least one active material chosen in the group consisting of anionic surfactant such as alkyl benzenesulfonate (ABS), secondary alkyl sulfonate (SAS), primary alcohol sulfate (PAS), lauryl ether sulfate (LES), methyl ester sulfonate (MES) and nonionic surfactant such as alkyl amines, alkanolamide, fatty alcohol poly(ethylene glycol) ether, fatty alcohol ethoxylate (FAE), ethylene oxide (EO) and propylene oxide (PO) copolymers, amine oxides, alkyl polyglucosides, alkyl polyglucosamides, the active base being used preferably in an amount comprised between 85 and 99.95% by weight based on the total weight of the composition,

[0384] a microcapsule slurry or microcapsules as defined above, preferably in an amount comprised between 0.05 to 15 wt%, more preferably between 0.1 and 5 wt% by weight based on the total weight of the composition,

[0385] optionally free perfume oil.

[0386] Solid detergent

[0387] An object of the invention is a consumer product in the form of a solid detergent composition comprising:

[0388] a solid detergent active base; preferably comprising at least one active material chosen in the group consisting of anionic surfactant such as alkyl benzenesulfonate (ABS), secondary alkyl sulfonate (SAS), primary alcohol sulfate (PAS), lauryl ether sulfate (LES), methyl ester sulfonate (MES) and nonionic surfactant such as alkyl amines, alkanolamide, fatty alcohol poly(ethylene glycol) ether, fatty alcohol ethoxylate (FAE), ethylene oxide (EO) and propylene oxide (PO) copolymers, amine oxydes, alkyl polyglucosides, alkyl polyglucosamides, the active base being used preferably in an amount comprised between 85 and 99.95% by weight based on the total weight of the composition,

[0389] a microcapsule powder or microcapsule slurry or microcapsules as defined above, preferably in an amount comprised between 0.05 to 15 wt%, more preferably between 0.1 and 5 wt% by weight based on the total weight of the composition,

[0390] optionally free perfume oil.

[0391] Shampoo / shower gel

[0392] An object of the invention is a consumer product in the form of a shampoo or a shower gel composition comprising: a shampoo or a shower gel active base; preferably comprising at least one active material chosen in the group consisting of sodium alkylether sulfate, ammonium alkylether sulfates, alkyl amphoacetate, cocamidopropyl betaine, cocamide MEA, alkyl glucosides and aminoacid based surfactants and mixtures thereof, the active base being used preferably in an amount comprised between 85 and 99.95% by weight based on the total weight of the composition,

[0393] a microcapsule slurry or microcapsules as defined above, preferably in an amount comprised between 0.05 to 15 wt%, more preferably between 0.1 and 5 wt% by weight based on the total weight of the composition,

[0394] optionally free perfume oil.

[0395] Rinse-Off Conditioner

[0396] An object of the invention is a consumer product in the form of a rinse-off conditioner composition comprising:

[0397] a rinse-off conditioner active base; preferably comprising at least one active material chosen in the group consisting of cetyl trimonium chloride, stearyl trimonium chloride, benzalkonium chloride, behentrimonium chloride and mixture thereof, the active base being used preferably in an amount comprised between 85 and 99.95% by weight based on the total weight of the composition,

[0398] a microcapsule slurry or microcapsules as defined above, preferably in an amount comprised between 0.05 to 15 wt%, more preferably between 0.1 and 5 wt% by weight based on the total weight of the composition,

[0399] optionally free perfume oil.

[0400] Solid scent booster

[0401] An object of the invention is a consumer product in the form of a solid scent booster composition comprising:

[0402] a solid carrier, preferably chosen in the group consisting of urea, sodium chloride, sodium sulphate, sodium acetate, zeolite, sodium carbonate, sodium bicarbonate, clay, talc, calcium carbonate, magnesium sulfate, gypsum, calcium sulfate, magnesium oxide, zinc oxide, titanium dioxide, calcium chloride, potassium chloride, magnesium chloride, zinc chloride, saccharides such as sucrose, mono-, di-, and polysaccharides and derivatives such as starch, cellulose, methyl cellulose, ethyl cellulose, propyl cellulose, polyols / sugar alcohols such as sorbitol, maltitol, xylitol, erythritol, and isomalt, PEG, PVP, citric acid or any water soluble solid acid, fatty alcohols or fatty acids and mixtures thereof,

[0403] a microcapsule slurry or microcapsules as defined above, in a powdered form, preferably in an amount comprised between 0.05 to 15 wt%, more preferably between 0.1 and 5 wt% by weight based on the total weight of the composition,

[0404] optionally free perfume oil.

[0405] Liquid scent booster

[0406] An object of the invention is a consumer product in the form of a liquid scent booster composition comprising:

[0407] an aqueous phase,

[0408] a surfactant system essentially consisting of one or more than one non-ionic surfactant, wherein the surfactant system has a mean HLB between 10 and 14, preferably chosen in the group consisting of ethoxylated aliphatic alcohols, POE / PPG (polyoxyethylene and polyoxypropylene) ethers, mono and polyglyceryl esters, sucrose ester compounds, polyoxyethylene hydroxylesters, alkyl polyglucosides, amine oxides and combinations thereof;

[0409] a linker chosen in the group consisting of alcohols, salts and esters of carboxylic acids, salts and esters of hydroxyl carboxylic acids, fatty acids, fatty acid salts, glycerol fatty acids, surfactant having an HLB less than 10 and mixtures thereof, and

[0410] a microcapsule slurry or microcapsules as defined above, in the form of a slurry, preferably in an amount comprised between 0.05 to 15 wt%, more preferably between 0.1 and 5 wt% by weight based on the total weight of the composition,

[0411] optionally free perfume oil.

[0412] Hair coloration

[0413] An object of the invention is a consumer product in the form of an oxidative hair coloring composition comprising:

[0414] an oxidizing phase comprising an oxidizing agent and an alkaline phase comprising an alkakine agent, a dye precursor and a coupling compound; wherein said dye precursor and said coupling compound form an oxidative hair dye in the presence of the oxidizing agent, preferably in an amount comprised between 85 and 99.95% by weight based on the total weight of the composition,

[0415] microcapsule slurry or microcapsules as defined above, preferably in an amount comprised between 0.05 to 15 wt%, more preferably between 0.1 and 5 wt% by weight based on the total weight of the composition,

[0416] optionally free perfume oil

[0417] Perfuming composition

[0418] According to a particular embodiment, the consumer product is in the form of a perfuming composition comprising:

[0419] 0.1 to 30%, preferably 0.1 to 20% of or microcapsule slurry or microcapsules as defined previously,

[0420] 0 to 40%, preferably 3-40% of perfume, and

[0421] - 20-90%, preferably 40-90% of ethanol, by weight based on the total weight of the perfuming composition.

[0422] Dental care compositions

[0423] According to another embodiment, the consumer product is in the form of a flavored toothpaste composition comprising a sufficient amount of a microcapsule slurry as defined hereinabove and a toothpaste formulation. Typical ingredients of such toothpaste formulation are e.g. abrasives, fluoride compounds, humectants, detergents, binders and thickeners, preservatives, and functional ingredients such as desensitizing, anti-bacterial agents, coloring or whitening agents, anti-tartar agents.

[0424] According to another embodiment, the consumer product is in the form of a flavored mouthwash composition comprising a sufficient amount of a microcapsule slurry as defined hereinabove and a mouthwash formulation. Typical ingredients of such mouthwash formulation are active ingredients, such as antimicrobial agents, fluorides, desensitizing agents, humectants, solvents, coloring agents, preservatives, pH adjusters, surfactants, and additional functional ingredients, such as whitening agents or anti-inflammatory agents. The invention will now be further described by way of examples. It will be appreciated that the invention as claimed is not intended to be limited in any way by these examples. EXAMPLES

[0425] Example 1

[0426] Potato protein (0.07 g) was dissolved in DI water (6.93 g) with stirring to give a solution, it was emulsified with Perfume Oil A (3 g) using ULTRA-TURRAX at 13.5k rpm for 2 min to obtain an emulsion. To the prepared emulsion, 5% sugar beet pectin (4.29 g) was added drop wise with stirring. The pH value was adjusted to 4 by diluted NaOH. Afterwards, 0.12 g of laccase solution (1 U / g) was added to the slurry with stirring. It was stirred at 40°C for 4 h. Stable microcapsules were obtained.

[0427] Table 1: Perfume Oil A composition.

[0428] Ingredients % in oil

[0429] Ethyl 2-methyl-pentanoate 3.2%

[0430] Eucalyptol 7.8%

[0431] 2,4-Dimethyl-3-cyclohexene-1-carbaldehyde 0.75%

[0432] Aldehyde C10 0.75%

[0433] Citronellyl Nitrile 4.3%

[0434] Isobornyl acetate 3%

[0435] 2-tert-butyl-1 -cyclohexyl acetate 9.8%

[0436] Citronellyl Acetate 1.3%

[0437] 2-Methylundecanal 3%

[0438] Diphenyloxide 0.8%

[0439] Aldehyde C12 1.3%

[0440] Dicyclopentadiene acetate 9.85%

[0441] Ionone beta 3.3%

[0442] Undecalactone gamma 18.75%

[0443] Hexyl Salicylate 15.9%

[0444] Benzyl Salicylate 16.2%

[0445]

[0446] Table 2: Ingredients of Example 1.

[0447] Ingredients Effective Amount of Ingredient Function

[0448] (% wt)

[0449] Potato protein1) 0.48 First Polyelectrolyte Sugar beet pectin2) 1.5 Second Polyelectrolyte Laccase3) 0.0006 Enzyme

[0450] DI water 77.2194 solvent Perfume Oil A 20.8 Encapsulated oil

[0451]

[0452] 1) Solanic 200, origin: Avebe

[0453] 2) origin: Schweizer Zucker AG

[0454] 3) Sigma-Aldrich

[0455] Example 1a

[0456] Comparative Example without laccase

[0457] Potato protein (0.07 g) was dissolved in DI water (6.93 g) with stirring to give a solution, it was emulsified with Perfume Oil A (3 g) using ULTRA-TURRAX at 13.5k rpm for 2 min to obtain an emulsion. To the prepared emulsion, 5% sugar beet pectin (4.29 g) was added drop wise with stirring. The pH value was adjusted to 4 by diluted NaOH. It was stirred at 40°C for 4 h. No microcapsules were obtained.

[0458] Table 3: Ingredients of Example 1a.

[0459] Ingredients Effective Amount of Ingredient Function

[0460] (% wt)

[0461] Potato protein1) 0.5 First Polyelectrolyte Sugar beet pectin2) 1.5 Second Polyelectrolyte DI water 77 Solvent Perfume Oil A 21 Encapsulated oil

[0462]

[0463] 1) Solanic 200, origin: Avebe

[0464] 2) origin: Schweizer Zucker AG

[0465] Example 2 Potato protein (0.28 g) was dissolved in DI water (27.72 g) with stirring to give a solution as aqueous phase. Takenate (0.12 g) was dissolved in Perfume Oil A (11.88 g) with stirring to give a solution as oil phase.

[0466] The prepared two phases were mixed using ULTRA-TURRAX at 13.5k rpm for 2 min to obtain an emulsion. To the prepared emulsion, 5% sugar beet pectin (17.143 g) was added drop wise with stirring. The pH value was adjusted to 4 by diluted NaOH. Afterwards, 0.46 g of laccase solution (1 ll / g) was added to the slurry with stirring. It was stirred at 40°C for 4 h and 90°C for 2 h. Stable microcapsules were obtained.

[0467] Table 4: Ingredients of Example 2.

[0468] Ingredients Effective Amount of Ingredient Function

[0469] (% wt)

[0470] Potato protein1) 0.5 First Polyelectrolyte Sugar beet pectin2) 1.5 Second Polyelectrolyte Laccase3) 0.0006 Enzyme DI water 77.1931 solvent Perfume Oil A 20.6 Encapsulated oil Takenate4) 0.2 Crosslinker

[0471]

[0472] 1) Solanic 200, origin: Avebe

[0473] 2) origin: Schweizer Zucker AG

[0474] 3) Sigma-Aldrich

[0475] 4) Takenate D-110N, Mitsui

[0476] Example 2a

[0477] Comparative Example without laccase

[0478] Potato protein (0.28 g) was dissolved in DI water (27.72 g) with stirring to give a solution as aqueous phase. Takenate (0.12 g) was dissolved in Perfume Oil A (11.88 g) with stirring to give a solution as oil phase.

[0479] The prepared two phases were mixed using ULTRA-TURRAX at 13.5k rpm for 2 min to obtain an emulsion. To the prepared emulsion, 5% sugar beet pectin (10 g) was added drop wise with stirring. The pH value was adjusted to 4 by diluted NaOH. It was stirred at 40°C for 4 h and 90°C for 2 h. Stable microcapsules were obtained. Table 5: Ingredients of Example 2a.

[0480] Ingredients Effective Amount of Ingredient Function

[0481] (% wt)

[0482] Potato protein1) 0.5 First Polyelectrolyte Sugar beet pectin2) 1.5 Second Polyelectrolyte DI water 77 Solvent Perfume Oil A 20.8 Encapsulated oil Takenate3) 0.2 Crosslinker

[0483]

[0484] 1) Solanic 200, origin: Avebe

[0485] 2) origin: Schweizer Zucker AG

[0486] 3) Takenate D-110N, Mitsui

[0487] Example 3

[0488] Potato protein (0.28 g) was dissolved in DI water (27.72 g) with stirring to give a solution as aqueous phase. Takenate (0.12 g) was dissolved in Perfume Oil A (11.88 g) with stirring to give a solution as oil phase.

[0489] The prepared two phases were mixed using ULTRA-TURRAX at 13.5k rpm for 2 min to obtain an emulsion. To the prepared emulsion, 5% sugar beet pectin (10 g) was added drop wise with stirring. The pH value was adjusted to 4 by diluted NaOH. Afterwards, 0.4 g of laccase solution (1 ll / g) was added to the slurry with stirring. It was stirred at 40°C for 4 h and 90°C for 2 h. Stable microcapsules were obtained.

[0490] Table 6: Ingredients of Example 3.

[0491] Ingredients Effective Amount of Ingredient Function

[0492] (% wt)

[0493] Potato protein1) 0.6 First Polyelectrolyte Sugar beet pectin2) 1 Second Polyelectrolyte Laccase3) 0.0006 Enzyme

[0494] DI water 74.5994 Dolvent Perfume Oil A 23.6 Encapsulated oil Takenate4) 0.2 Crosslinker

[0495]

[0496] 1) Solanic 200, origin: Avebe

[0497] 2) origin: Schweizer Zucker AG

[0498] 3) Sigma-Aldrich

[0499] 4) Takenate D-110N, Mitsui

[0500] Example 3a

[0501] Comparative Examples without laccase

[0502] Potato protein (0.28 g) was dissolved in DI water (27.72 g) with stirring to give a solution as aqueous phase. Takenate (0.12 g) was dissolved in Perfume Oil A (11.88 g) with stirring to give a solution as oil phase.

[0503] The prepared two phases were mixed using ULTRA-TURRAX at 13.5k rpm for 2 min to obtain a emulsion. To the prepared emulsion, 5% sugar beet pectin (10 g) was added drop wise with stirring. The pH value was adjusted to 4 by diluted NaOH. It was stirred at 40°C for 4 h and 90°C for 2 h. Stable microcapsules were obtained.

[0504] Table 7: Ingredients of Example 3a.

[0505] Ingredients Effective Amount of Ingredient Function

[0506] (% wt)

[0507] Potato protein1) 0.6 First Polyelectrolyte Sugar beet pectin2) 1 Second Polyelectrolyte DI water 74.4 Solvent Perfume Oil A 23.8 Encapsulated Oil Takenate3) 0.2 Crosslinker

[0508]

[0509] 1) Solanic 200, origin: Avebe

[0510] 2) origin: Schweizer Zucker AG

[0511] 3) Takenate D-110N, Mitsui

[0512] Example 4

[0513] Amino-silica (0.84 g) was dispersed in pH 4 buffer (27.16 g) using ultrasonic probe H14 equipped on LIPS400 at 100% amplitude for 3 min to give a suspension as aqueous phase. Takenate (0.16 g) was dissolved in Perfume Oil A (11.84 g) with stirring to give a solution as oil phase.

[0514] The prepared two phases were mixed using ULTRA-TURRAX at 24k rpm for 3 min to obtain a emulsion. To the prepared emulsion, 5% sugar beet pectin (10 g) was added drop wise with stirring. The pH value was adjusted to 6.21 by diluted NaOH. Afterwards, 0.4 g of laccase solution (1 ll / g) was added to the slurry with stirring. It was stirred at 40°C for 4 h and 90°C for 2 h. Stable microcapsules were obtained.

[0515] Table 8: Ingredients of Example 4.

[0516] Ingredients Effective Amount of Ingredient Function

[0517] (% wt)

[0518] Amino silica1) 1.7 First Polyelectrolyte Sugar beet pectin2) 1 Second Polyelectrolyte Laccase3) 0.0006 Enzyme

[0519] DI water 73 Solvent Potassium 0.5 Salt hydrogen

[0520] phthalate4)

[0521] Perfume Oil A 23.5 Encapsulated oil Takenate5) 0.3 Crosslinker 1) Tetraethylorthosilicate functionalized with (3-aminopropyl)1 riethoxysilane

[0522] 2) origin: Schweizer Zucker AG

[0523] 3) Sigma-Aldrich

[0524] 4) Sinopharm Chemical Reagent Co., Ltd

[0525]

[0526] 5) Takenate D-110N, Mitsui

[0527] Example 4a

[0528] Comparative example without laccase

[0529] Amino-silica (0.84 g) was dispersed in pH 4 buffer (27.16 g) using ultrasonic probe H14 equipped on LIPS400 at 100% amplitude for 3 min to give a suspension as aqueous phase. Takenate (0.16 g) was dissolved in Perfume Oil A (11.84 g) with stirring to give a solution as oil phase. The prepared two phases were mixed using ULTRA-TURRAX at 24k rpm for 3 min to obtain a emulsion. To the prepared emulsion, 5% sugar beet pectin (10 g) was added drop wise with stirring. The pH value was adjusted to 6.21 by diluted NaOH. It was stirred at 40°C for 4 h and 90°C for 2 h. Stable microcapsules were obtained.

[0530] Table 9: Ingredients of Example 4a.

[0531] Ingredients Effective Amount of Ingredient Function

[0532] (% wt)

[0533] Amino silica1) 1.7 First Polyelectrolyte Sugar beet pectin2) 1 Second Polyelectrolyte DI water 73 Solvent Potassium 0.5 Salt hydrogen

[0534] phthalate3)

[0535] Perfume Oil A 23.5 Encapsulated oil Takenate5) 0.3 Crosslinker

[0536]

[0537] 1) Tetraethylorthosilicate functionalized with (3-aminopropyl)triethoxysilane

[0538] 2) origin: Schweizer Zucker AG

[0539] 3) Sinopharm Chemical Reagent Co., Ltd

[0540] 4) Takenate D-110N, Mitsui

[0541] Example 5

[0542] Potato protein (0.28 g) was dissolved in DI water (27.72 g) with stirring to give a solution as aqueous phase. Desmodur RFE (0.936 g) was vacuumed for 1 min and dissolved in mixture of neobee (1.2 g) and Perfume Oil A (10.6137 g) with stirring to give a solution as oil phase. The prepared two phases were mixed using ULTRA-TURRAX at 13.5k rpm for 2 min to obtain a emulsion. To the prepared emulsion, 5% sugar beet pectin (10 g) was added drop wise with stirring. The pH value was adjusted to 4 by diluted NaOH. Afterwards, 0.4 g of laccase solution (1 U / g) was added to the slurry with stirring. It was stirred at 40°C for 4 h and 90°C for 2 h. Stable microcapsules were obtained. Table 10: Ingredients of Example 5.

[0543] Ingredients Effective Amount of Ingredient Function

[0544] (% wt)

[0545] Potato protein1) 0.6 First Polyelectrolyte Sugar beet pectin2) 1 Second Polyelectrolyte Laccase3) 0.0006 Enzyme

[0546] DI water 73.8 Solvent Perfume Oil A 21.1 Encapsulated oil Tris(4- 0.3 Crosslinker isocyanatophenyl)

[0547] thiophosphate4)

[0548] Neobee5) 2.4 Co-solvent

[0549]

[0550] 1) Solanic 200, origin: Avebe

[0551] 2) origin: Schweizer Zucker AG

[0552] 3) Sigma-Aldrich

[0553] 4) Desmodur RFE, Covestro

[0554] 5) Neobee M5, internal 966440

[0555] Example 5a

[0556] Comparative example without laccase

[0557] Potato protein (0.28 g) was dissolved in DI water (27.72 g) with stirring to give a solution as aqueous phase. Desmodur RFE (0.936 g) was vacuumed for 1 min and dissolved in mixture of neobee (1.2 g) and Perfume Oil A (10.6137 g) with stirring to give a solution as oil phase.

[0558] The prepared two phases were mixed using ULTRA-TURRAX at 13.5k rpm for 2 min to obtain a emulsion. To the prepared emulsion, 5% sugar beet pectin (10 g) was added drop wise with stirring. The pH value was adjusted to 4 by diluted NaOH. It was stirred at 40°C for 4 h and 90°C for 2 h. Stable microcapsules were obtained. Table 11: Ingredients of Example 5a.

[0559] Ingredients Effective Amount of Ingredient Function

[0560] (% wt)

[0561] Potato protein1) 0.6 First Polyelectrolyte Sugar beet pectin2) 1 Second Polyelectrolyte DI water 73.8 Solvent Perfume Oil A 21.1 Encapsulated oil Tris(4- 0.3 Crosslinker isocyanatophenyl)

[0562] thiophosphate3)

[0563] Neobee4) 2.4 Co-Solvent

[0564]

[0565] 1) Solanic 200, origin: Avebe

[0566] 2) origin: Schweizer Zucker AG

[0567] 3) Desmodur RFE, Covestro

[0568] 4) Neobee M5, internal 966440

[0569] Example 6

[0570] Potato protein (0.28 g) was dissolved in DI water (27.72 g) with stirring to give a solution as aqueous phase. Desmodur RFE (0.936 g) was vacuumed for 1 min and dissolved in mixture of neobee (1.2 g) and Perfume Oil A (10.6137 g) with stirring to give a solution as oil phase.

[0571] The prepared two phases were mixed using ULTRA-TURRAX at 13.5k rpm for 2 min to obtain a emulsion. The pH value was adjusted to 4 by acetic acid. Afterwards, 0.4 g of laccase solution (1 ll / g) was added to the slurry with stirring. It was stirred at 40°C for 4 h and 90°C for 2 h. Stable microcapsules were obtained..

[0572] Table 12: Ingredients of Example 6.

[0573] Ingredients Effective Amount of Ingredient Function

[0574] (% wt)

[0575] Potato protein1) 0.7 First Polyelectrolyte Laccase2) 0.0007 Enzyme

[0576]

[0577] DI water 68.6 Solvent Perfume oil A 26.3 Encapsulated oil Tris(4- 0.3 Crosslinker isocyanatophenyl)

[0578] thiophosphate3)

[0579] Neobee4) 3 Co-solvent

[0580]

[0581] 1) Solanic 200, origin: Avebe

[0582] 2) Sigma-Aldrich

[0583] 3) Desmodur RFE, Covestro

[0584] 4) Neobee M5, internal 966440

[0585] Example 6a

[0586] Comparative example without laccase

[0587] Potato protein (0.28 g) was dissolved in DI water (27.72 g) with stirring to give a solution as aqueous phase. Desmodur RFE (0.936 g) was vacuumed for 1 min and dissolved in mixture of neobee (1.2 g) and Perfume Oil A (10.6137 g) with stirring to give a solution as oil phase.

[0588] The prepared two phases were mixed using ULTRA-TURRAX at 13.5k rpm for 2 min to obtain a emulsion. The pH value was adjusted to 4 by acetic acid. It was stirred at 90°C for 2 h. No microcapsules formed and visible oil floating was observed.

[0589] Table 13: Ingredients of Example 6a.

[0590] Ingredients Effective Amount of Ingredient Function

[0591] (% wt)

[0592] Potato protein1) 0.7 First Polyelectrolyte DI water 68.6 Solvent Perfume Oil A 26.3 Encapsulated oil Tris(4- 0.3 Crosslinker isocyanatophenyl)

[0593] thiophosphate2)

[0594] Neobee3) 3 Co-solvent

[0595]

[0596] 1) Solanic 200, origin: Avebe 2) Desmodur RFE, Covestro

[0597] 3) Neobee M5, internal 966440

[0598] Example 7

[0599] Potato protein (0.66 g) was dissolved in DI water (27.34 g) with stirring to give a solution as aqueous phase. Takenate D-110N (0.24 g) and Perfume Oil A (11.76 g) with stirring to give a solution as oil phase.

[0600] The prepared two phases were mixed using ULTRA-TURRAX at 13.5k rpm for 2 min to obtain a emulsion. To the prepared emulsion, 5% sugar beet pectin (2.55 g) was added drop wise with stirring. The pH value was adjusted to 4 by diluted NaOH. Afterwards, it was stirred at 90°C for 1 h. Then, it was cooled to 40°C, 8% arbutin aqueous solution (2.86 g) was added to the slurry, followed by adding 0.36 g of laccase solution (1 ll / g) with stirring. It was stirred at 40°C for 4 h and 90°C for 0.5 h. Stable microcapsules were obtained. (3 days oil leakage in softener: 12%)

[0601] Ingredients Effective Amount of Ingredient Function

[0602] (% wt)

[0603] Potato protein1) 1.4 First Polyelectrolyte Sugar beet pectin2) 0.3 Second Polyelectrolyte Laccase3) 0.0006 Enzyme

[0604] DI water 71.6 Solvent Perfume Oil A 25.7 Encapsulated oil Takenate4) 0.5 First crosslinker Arbutin5) 0.5 Second crosslinker

[0605]

[0606] 1) Avebe

[0607] 2) Schweizer Zucker AG

[0608] 3) Sigma-Aldrich

[0609] 4) Mitsui

[0610] 5) TCI chemical

[0611] Example 8 Potato protein (0.7 g) was dissolved in DI water (34.3 g) with stirring to give a solution as aqueous phase. 1,3-phthalaldehyde (0.18 g) and Perfume Oil (14.83 g) with stirring to give a solution as oil phase.

[0612] The prepared two phases were mixed using ULTRA-TURRAX at 13.5k rpm for 3 min to obtain an emulsion. To the prepared emulsion, 10% chitosan oligomer (7 g) was added drop wise with stirring. The pH value was adjusted to 6 by diluted NaOH. Then 1 ll / g laccase solution (0.22 g) was added into the emulsion with stirring. Afterwards, it was stirred at 60°C for 2 h and 90°C for 1 h. Microcapsules were obtained.

[0613] Ingredients Effective Amount of Ingredient Function

[0614] (% wt)

[0615] Potato protein1) 1.22 First Polyelectrolyte Chitosan oligomer2) 1.22 Second Polyelectrolyte Laccase3) 0.0003 Enzyme

[0616] DI water 71.34 Solvent Perfume Oil 25.91 Encapsulated oil 1,3- 0.31 Crosslinker phthalaldehyde4)

[0617]

[0618] 1) Avebe

[0619] 2) Qingdao Chibio Biotech Co., Ltd

[0620] 3) Sigma-Aldrich

[0621] 4) Aladdin

[0622] Example 9

[0623] Potato protein (0.14 g) was dissolved in DI water (6.86 g) with stirring to give a solution as aqueous phase. Poly(maleic anhydride-alt-1 -octadecene) (0.15 g) and Perfume Oil (2.85 g) with stirring to give a solution as oil phase.

[0624] The prepared two phases were mixed using ULTRA-TURRAX at 13.5k rpm for 3 min to obtain an emulsion. To the prepared emulsion, 10% chitosan oligomer (0.5625 g) was added drop wise with stirring. The pH value was adjusted to 4.06 by diluted HCI. Then 1 U / g laccase solution (0.1 g) was added into the emulsion with stirring. Afterwards, it was stirred at 45°C for 2 h. Microcapsules were obtained. Ingredients Effective Amount of Ingredient Function

[0625] (% wt)

[0626] Potato protein1) 1.3 First Polyelectrolyte Chitosan oligomer2) 0.53 Second Polyelectrolyte Laccase3) 0.0007 Enzyme

[0627] DI water 70.07 Solvent Perfume Oil 26.7 Encapsulated oil Poly(maleic 1.4 Crosslinker anhydride-alt-1- octadecene)4)

[0628]

[0629] 1) Avebe

[0630] 2) Qingdao Chibio Biotech Co., Ltd

[0631] 3) Sigma-Aldrich

[0632] 4) Sigma-Aldrich

[0633] Example 10

[0634] Potato protein (0.14 g) was dissolved in DI water (6.86 g) with stirring to give a solution as aqueous phase.

[0635] The prepared aqueous phase and Perfume Oil (3 g) were mixed using ULTRA-TURRAX at 13.5k rpm for 2 min to obtain an emulsion. To the prepared emulsion, 4% Epigallocatechin-3-gallate solution (2.12 g) was added drop wise with stirring. The pH value was adjusted to 4 by diluted NaOH. Then 1 ll / g laccase solution (0.05 g) was added into the emulsion with stirring. Afterwards, it was stirred at 40°C for 2 h and 90°C for 1 h. Microcapsules were obtained.

[0636] Ingredients Effective Amount of Ingredient Function

[0637] (% wt)

[0638] Potato protein1) 1.15 Polyelectrolyte Laccase2) 0.0003 Enzyme DI water 73.49 Solvent Perfume Oil 24.66 Encapsulated oil

[0639]

[0640] Epigallocatechin-3-gallate3) 0.70 Additional phenolic compound

[0641]

[0642] 1) Avebe

[0643] 2) Sigma-Aldrich

[0644] 3) Adamas-beta

[0645] Example 11

[0646] Stability Test in the Presence of a Fabric Softener

[0647] Microcapsules of the present invention are dispersed in a fabric softener (FS) composition described in Table 14 to obtain a concentration of encapsulated Perfume Oil At 0.2%.

[0648] Table 14: Fabric Softener composition (FS).

[0649] Product Wt %

[0650] Stepantex VL 90 A 8.88

[0651] Calcium Chloride Sol. 10% 0.36

[0652] Proxel GXL 0.04

[0653] Perfume 1.00

[0654] Water 89.72

[0655] TOTAL 100

[0656]

[0657] 1 g of sample (base with capsules) is weighed in a 20mL vial and mixed with 4 mL of deionized water. 5 mL of the extraction solvent (Isooctane / Diethyl ether, 9 / 1, v / v) containing the internal standard ethyl dodecanoate at a precisely known concentration around 10 pg / mL is added to the vial. Then, it is shaked for 15 min by a shaker to extract the free perfume. The solvent phase is then obtained by centrifuging for perfume leakage analysis.

[0658] To measure the leakage in the base, the Agilent 7890 GC coupled with 5975 mass selective detector was used, The injector is set at 250°C in split mode; split ratio was 1:25. Helium is used as the carrier gas at a flow rate of 1 mL / min. The oven temperature is programmed from 50°C, held 5 minutes, then increased to 230°C at 15°C / min. Finally, a post run at 260°C is applied to backflush for 3 minutes. The temperatures of the quadrupole and ion source are 150°C and 230°C, respectively. Calibration solutions are prepared at 1000, 500, 250, 100, 50, and 25 ppm of fragrance oil in the mixture of isooctane / diethyl ether (9 / 1, v / v) with 10 pg / mL of ethyl dodecanoate. It is important that the fragrance oil used to prepare the calibration curve comes from the same batch used to produce the microcapsules.

[0659] The results are depicted in Table 15.

[0660] Table 15: Stability of the formed microcapsules in the presence of a fabric softener (FS).

[0661] Sample Stability (after 3 d at 37 °C) Example 2 30.1%

[0662] Example 2a 86.6%

[0663] Example 3 18.2%

[0664] Example 3a 63.3%

[0665] Example 4 30.3%

[0666] Example 4a 68%

[0667] Example 5 31.7%

[0668] Example 5a 57.1%

[0669] Example 6 36.2%

[0670]

[0671] Example 12

[0672] Spray-dried microcapsule preparation

[0673] Emulsions A-E having the following ingredients are prepared.

[0674] Table 16: Composition of Emulsions A-E and composition of granulated powder A-E after spray-drying.

[0675] Ingredients Emulsion A Emulsion B Emulsion C Emulsion D Emulsion E Modified 2.6% 2.6% 2.6% 12.5% 2% Starch1)

[0676] Maltodextrin2) 26.8% 22.8% 19.3% 0% 19.1% Maltose3) 0% 0% 0% 7.9% 0%

[0677] Citric Acid 0% 0% 0% 1% 0%

[0678]

[0679] Tri potassium 0% 0% 0% 1.9% 0% Citrate

[0680] Exemplified 12.0% 24% 37% 8.9% 56.2% Microcapsules

[0681] 1 to 6

[0682] Silica4) 1.1% 1.1% 1.1% 0% 0% Free Perfume 0% 0% 0% 11% 0% B5)

[0683] Water 57.6% 49.6% 40.1% 56.9% 22.7%

[0684] Granule A Granule B Granule C Granule D Granule E Modified 7.5% 7.4% 7.2% 31.6% 4.9% Starch1)

[0685] Maltodextrin2) 77.4% 65.5% 53.8% 0% 44.7% Maltose3) 0% 0% 0% 20.9% 0% Citric Acid 0% 0% 0% 2.6% 0% Tri potassium 0% 0% 0% 4.9% 0% Citrate

[0686] Encapsualted 0% 0% 0% 28.1% 0% Perfume B

[0687] Microcapsules 12% 24.1% 36.1% 9.8% 48.4% 1-6

[0688] Silica4) 3.0 3.0% 2.9% 2.0% 2% Fragrance 10.1% 20.1% 30% 35.8% 40.2% loading in

[0689] powder after

[0690] spray-drying

[0691]

[0692] 1) Capsul™, Ingredion

[0693] 2) Maltodextrin 10DE origin: Roquette

[0694] 3) Maltose, Lehmann & Voss

[0695] 4) Silica, Evonik

[0696] 5) see Table 17 Table 17: Composition of Perfume B.

[0697] Component %

[0698] ACETATE DE 4-(1,1-DIMETHYLETHYL)-1-CYCLOHEXYLE1) 14.50

[0699] LINALOL BJ 10.50

[0700] LILIAL®2) 10.00

[0701] ISO E SUPER3) 10.00

[0702] CITRONELLYL NITRILE 9.00

[0703] DIPHENYLOXYDE 6.50

[0704] ISOBORNYL ACETATE 6.00

[0705] BETA IONONE 6.00 TRICYCLO[5.2.1.0~2,6~]DEC-3-EN-8-YL ACETATE (A) +

[0706] TRICYCLO[5.2.1 ,0~2,6~]DEC-4-EN-8-YL ACETATE (B)

[0707] 4) 5.50

[0708] ETHER MT 4.00

[0709] HEDIONE®5) 4.00

[0710] GERANIOL 60 3.00

[0711] CITRAL 2.50

[0712] ALDEHYDE C 10 2.50

[0713] ALLYL HEPTANOATE 2.50

[0714] ETHYL METHYL-2-BUTYRATE 1.50

[0715] GERANYL ACETATE 1.00

[0716] 2,4-DIMETHYL-3-CYCLOHEXENE-1-CARBALDEHYDE6) 1.00

[0717]

[0718] 1) Firmenich SA, Switzerland

[0719] 2) 3-(4-tert-butylphenyl)-2-methylpropanal, Givaudan SA, Vernier, Switzerland

[0720] 3)1-(octahydro-2,3,8,8-tetramethyl-2-naphtalenyl)-1-ethanone, International Flavors & Fragrances, USA

[0721] 4) Firmenich SA, Switzerland

[0722] 5) Methyl dihydrojasmonate, Firmenich SA, Switzerland

[0723] 6) Firmenich SA, Switzerland Components for the polymeric matrix (Maltodextrin and capsul™, citric acid and tri potassium citrate) are added in water at 45-50°C until complete dissolution.

[0724] For emulsion D, free perfume C is added to the aqueous phase.

[0725] Microcapsules slurry is added to the obtained mixture. Then, the resulting mixture is then mixed gently at 25°C (room temperature).

[0726] Granulated powder A-E are prepared by spray-drying Emulsion A-E using a Sodeva Spray Dryer (Origin France), with an air inlet temperature set to 215°C and a throughput set to 500 ml per hour. The air outlet temperature is of 105°C. The emulsion before atomization is at ambient temperature.

[0727] Example 13

[0728] Liquid scent booster composition

[0729] A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in a liquid scent booster to add the equivalent of 0.2% perfume.

[0730] Table 18: Liquid scent booster composition.

[0731] Ingredients Amount (% wt)

[0732] 1 2 3 4 5 6 Water 71.20% 89.5% 78.8% 79.4% 70% 70% Propylene glycol 20.30% - - - 20% 20% Polyethylene glycol

[0733] 4.00% 6%

[0734] ethers of decyl alcohol1)

[0735] Polyethylene glycol

[0736] 4.00% 4.00% ether of Lauryl Alcohol2)

[0737] alkyl polyglucoside C8- 8.30% 7.7%

[0738] C103)

[0739] Deceth-31) 1.50%

[0740] Lauryl lactate 1%

[0741] Lauric acid 1.5% 1.60%

[0742] Glyceryl Caprylate 3.00% 3.00% Fragrance 3.00% 3.0% 3.00% 3.00% 3.00% 0%

[0743]

[0744] 1) Deceth-8; trademark and origin : KLK Oleo

[0745] 2) Laureth-9

[0746] 3) Plantacare 2000LIP; trademark and origin : BASF

[0747] Different ringing gel compositions are prepared (compositions 1-6) according to the following protocol.

[0748] In a first step, the aqueous phase (water), the solvent (propylene glycol) if present and surfactants are mixed together at room temperature under agitation with magnetic stirrer at 300 rpm for 5 min.

[0749] In a second step, the linker is dissolved in the hydrophobic active ingredient (fragrance) at room temperature under agitation with magnetic stirrer at 300 rpm. The resulting mixture is mixed for 5 min.

[0750] Then, the aqueous phase and the oil phase are mixed together at room temperature for 5 min leading to the formation of a transparent or opalescent ringing gel.

[0751] Example 14

[0752] Liquid detergent composition

[0753] A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in a liquid detergent to add the equivalent of 0.2% perfume.

[0754] Table 19: Liquid Detergent Composition.

[0755] Ingredients Concentration [wt%] Sodium C14-17Alkyl Sec Sulfonate1) 7

[0756] Fatty acids, C12.18 and C18-unsaturated2) 7.5

[0757] C12 / 14 fatty alcohol polyglycol ether with 7 mol EO3) 17

[0758] Triethanolamine 7.5

[0759] Propylene Glycol 11

[0760] Citric acid 6.5

[0761]

[0762] Potassium Hydroxyde 9.5

[0763] Properase L4) 0.2

[0764] Puradax EG L4) 0.2

[0765] Purastar ST L4) 0.2 Acrylates / Steareth-20 Methacrylate structuring Crosspolymer5) 6

[0766] Deionized Water 27.4

[0767]

[0768] 1) Hostapur SAS 60; Origin: Clariant

[0769] 2) Edenor K 12-18; Origin: Cognis

[0770] 3) Genapol LA 070; Origin: Clariant

[0771] 4) Origin: Genencor International

[0772] 5) Aculyn 88; Origin: Dow Chemical

[0773] Example 15

[0774] Unit dose formulation

[0775] A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in a unit dose formulation to add the equivalent of 0.2% perfume.

[0776] The unit dose formulation can be contained in a PVOH (polyvinyl alcohol) film.

[0777] Table 20: Unit dose composition.

[0778] Ingredients Concentration [wt%] C12 - C14 alkyl poly ethoxylate 15

[0779] C12 - C14 alkyl poly ethoxylate sulfate Mono Ethanol Amine

[0780] 9.5

[0781] salt

[0782] Linear Alkylbenzene sulfonic acid 17

[0783] Citric Acid 0.5

[0784] C12 - C18 Fatty Acid 17

[0785] Enzymes 1.2

[0786] Fluorescent brightener 0.3

[0787] 1,2 propanediol 12

[0788]

[0789] Glycerol 9

[0790] Sodium Hydroxide 1

[0791] Mono Ethanol Amine 6

[0792] PDMS 2.5

[0793] Potassium sulphite 0.2

[0794] Water 8.8

[0795] Total 100

[0796]

[0797] Example 16

[0798] Powder detergent composition

[0799] A sufficient amount of exemplified microcapsulesl to 6 is weighed and mixed in a powder detergent composition to add the equivalent of 0.2% perfume.

[0800] Table 21 : Powder detergent composition.

[0801] Ingredients Part

[0802] Anionic (Linear Alkyl Benzene

[0803] 20%

[0804] Sulphonates)

[0805] Nonionics (Alcohol Ethoxylates (5-9

[0806] 6%

[0807] ethylene oxide)

[0808] Builders (zeolites, sodium carbonate) 25%

[0809] Silicates 6%

[0810] Sodium Sulphate 35%

[0811] Others (Enzymes, Polymers, Bleach) 7.5%

[0812] Spray-dried granule powder A-E 0.5%

[0813]

[0814] Example 17

[0815] Concentrated All Purpose Cleaner composition A sufficient amount of exemplified microcapsulesl to 6 is weighed and mixed in a concentrated all-purpose cleaner composition to add the equivalent of 0.2% perfume.

[0816] Table 22: Concentrated all-purpose cleaner composition.

[0817] Ingredients Amount (% Function

[0818] wt)

[0819] Ethoxylated Alcohol (C9-C11, 8EO) (1) 20 Non-ionic surfactant Sodium Dodecyl Benzene Sulfonate (2) 16 Anionic surfactant Sodium Cumene Sulfonate (3) 8 Hydrotrope

[0820] Methyl chloro isothiazolinone Methyl 0.8% preservative isothiazolinone 3.3:1 (4)

[0821] Water 55.9 solvent

[0822]

[0823] 1) Neodol 91-8 ®; trademark and origin : Shell Chemical

[0824] 2) Biosoft D-40®; trademark and origin : Stepan Company

[0825] 3) Stepanate SCS®; trademark and origin : Stepan Company

[0826] 4) Kathon CG®; trademark and origin : Dow Chemical Company

[0827] All ingredients are mixed together and then the mixture was diluted with water to 100%.

[0828] Example 18

[0829] Solid scent booster composition

[0830] The following compositions are prepared.

[0831] Table 23: Salt-based solid scent booster compositions.

[0832] Ingredients Part

[0833] Sodium chloride 95

[0834] Spray-dried granule powder A-E 5

[0835]

[0836] Table 24: Urea-based solid scent booster compositions.

[0837] Ingredients Part

[0838] Urea (beads) 94

[0839]

[0840] Spray-dried granule powder A-E 8

[0841] Bentonite 3

[0842] Perfume 3

[0843]

[0844] Example 19

[0845] Shampoo composition

[0846] A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in a shampoo composition to add the equivalent of 0.2% perfume.

[0847] Table 25: Shampoo composition.

[0848] Concentration Ingredients

[0849] [wt%]

[0850] Water deionized 44.4 Polyquaternium-101) 0.3

[0851] A

[0852] Glycerin 85%2) 1

[0853] DMDM Hydantoin3) 0.2

[0854] Sodium Laureth Sulfate4) 28 Cocamidopropyl Betaine5) 3.2

[0855] B

[0856] Disodium Cocoamphodiacetate6) 4

[0857] Ethoxy (20) Stearyl Alcohol6) 1

[0858] Sodium Laureth Sulfate4) 3

[0859] C

[0860] Glyceryl Laureate7) 0.2

[0861] Water deionized 1

[0862] D

[0863] Sodium Methyl paraben8) 0.1

[0864] Sodium Chloride 10% aqueous sol. 15

[0865] E Citric acid 10% aqueous sol. till pH 5.5-6 q.s.

[0866] Perfume 0.5 TO TA L: 100

[0867]

[0868] 1) Ucare Polymer J R-400, Noveon 2) Schweizerhall

[0869] 3) Glydant, Lonza

[0870] 4) Texapon NSO IS, Cognis

[0871] 5) Tego Betain F 50, Evonik

[0872] 6) Amphotensid GB 2009, Zschimmer & Schwarz

[0873] 7) Monomuls 90 L-12, Gruenau

[0874] 8) Nipagin Monosodium, NIPA

[0875] Polyquaternium-10 is dispersed in water. The remaining ingredients of phase A are mixed separately by addition of one after the other while mixing well after each adjunction. Then this pre-mix is added to the Polyquaternium-10 dispersion and was mixed for 5 min. Then Phase B and the premixed Phase C (heat to melt Monomuls 90L-12 in Texapon NSO IS) are added. The mixture is mixed well. Then, Phase D and Phase E are added while agitating. The pH was adjusted with citric acid solution till pH: 5.5 - 6.0.

[0876] Example 20

[0877] Shampoo composition

[0878] A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in a shampoo composition to add the equivalent of 0.2% perfume.

[0879] Table 26: Shampoo composition.

[0880] Concentration Ingredients

[0881] [wt%]

[0882] Water deionized 45.97

[0883] Tetrasodium EDTA1) 0.05

[0884] A

[0885] Guar Hydroxypropyltrimonium Chloride2) 0.05 Polyquaternium-103) 0.075

[0886] B NaOH 10% aqueous sol. 0.3

[0887] Ammonium Lauryl Sulfate4) 34

[0888] C

[0889] Ammonium Laureth Sulfate5) 9.25

[0890]

[0891] Cocamidopropyl Betaine6) 2

[0892] Dimethicone (&) C12-13 Pareth-4 (&) C12-13 Pareth- 2.5

[0893] 23 (&) Salicylic Acid7)

[0894] Cetyl Alcohol8) 1.2

[0895] D Cocamide MEA9) 1.5

[0896] Glycol Distearate1°) 2 Methylchloroisothiazolinone & Methylisothiazolinone

[0897] 0.1

[0898] 11)

[0899] E

[0900] D-Panthenol 75%12) 0.1

[0901] Water deionized 0.3

[0902] F Sodium Chloride 25% aqueous sol. 0.6

[0903] TO TA L: 100

[0904]

[0905] 1) EDETA B Powder, BASF

[0906] 2) Jaguar C14 S, Rhodia

[0907] 3) llcare Polymer J R-400, Noveon

[0908] 4) Sulfetal LA B-E, Zschimmer & Schwarz

[0909] 5) Zetesol LA, Zschimmer & Schwarz

[0910] 6) Tego Betain F 50, Evonik

[0911] 7) Xiameter MEM -1691, Dow Corning

[0912] 8) Lanette 16, BASF

[0913] 9) Comperlan 100, Cognis

[0914] 10) Cutina AGS, Cognis

[0915] 11) Kathon CG, Rohm & Haas

[0916] 12) D-Panthenol, Roche

[0917] A premix comprising Guar Hydroxypropyltrimonium Chloride and Polyquaternium-10 are added to water and Tetrasodium EDTA while mixing. When the mixture is homogeneous, NaOH is added. Then, Phase C ingredients are added and the mixture was heat to 75 °C. Phase D ingredients are added and mixed till homogeneous. The heating is stopped and temperature of the mixture is decreased to RT. At 45 °C, ingredients of Phase E while mixing final viscosity is adjusted with 25% NaCI solution and pH of 5.5-6 is adjusted with 10% NaOH solution. Example 21

[0918] Rinse-off hair composition

[0919] A sufficient amount of exemplified microcapsulesl to 6 is weighed and mixed in a rinse-off composition to add the equivalent of 0.2% perfume.

[0920] Table 27: Rinse-off composition.

[0921] Concentration Ingredients

[0922] [wt%]

[0923] Water deionized 81.8

[0924] A Behentrimonium Chloride1) 2.5

[0925] Hydroxyethylcellulose2) 1.5

[0926] Cetearyl Alcohol3) 4

[0927] Glyceryl Stearate (and) PEG-100 Stearate4) 2

[0928] B Behentrimonium Methosulfate (and) Cetyl alcohol

[0929] 4

[0930] (and) Butylene Glycol5)

[0931] Ethoxy (20) Stearyl Alcohol6) 1 Amodimethicone (and) Trideceth-12 (and)

[0932] 3

[0933] C Cetrimonium Chloride7)

[0934] Chlorhexidine Digluconate8) 20% aqueous solution 0.2

[0935] D Citric acid 10% aqueous sol. till pH 3.5-4 q.s.

[0936] TO TA L: 100

[0937]

[0938] 1) Genamin KDMP, Clariant

[0939] 2) Tylose H10 Y G4, Shin Etsu

[0940] 3) Lanette O, BASF

[0941] 4) Arlacel 165, Croda

[0942] 5) Incroquat Behenyl TMS-50-PA- (MH), Croda

[0943] 6) Brij S20, Croda

[0944] 7) Xiameter MEM-949, Dow Corning

[0945] 8) Alfa Aesar Ingredients of Phase A are mixed until an uniform mixture was obtained. Tylose is allowed to completely dissolve. Then the mixture is heated up to 70-75°C. Ingredients of Phase B are combined and melted at 70-75°C. Then ingredients of Phase B are added to Phase A with good agitation and the mixing is continued until cooled down to 60°C. Then, ingredients of Phase C are added while agitating and keeping mixing until the mixture cooled down to 40°C. The pH is adjusted with citric acid solution till pH: 3.5 - 4.0.

[0946] Example 22

[0947] Antiperspirant spray anhydrous composition

[0948] A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in an antiperspirant spray anhydrous composition to add the equivalent of 0.2% perfume.

[0949] Table 28: Antiperspirant spray anhydrous composition.

[0950] Ingredient Amount (wt %)

[0951] Cyclomethicone1) 53.51

[0952] Isopropyl miristate 9.04

[0953] Silica2) 1.03

[0954] Quaternium-18-Hectorite3) 3.36

[0955] Aluminium Chlorohydrate4) 33.06

[0956]

[0957] 1) Dow Corning® 345 Fluid; trademark and origin: Dow Corning

[0958] 2) Aerosil® 200 ; trademark and origin : Evonik

[0959] 3) Bentone® 38; trademark and origin : Elementis Specialities

[0960] 4) Micro Dry Ultrafine; origin : Reheis

[0961] Using a high speed stirrer, Silica and Quaternium-18-Hectorite are added to the Isopropyl miristate and Cyclomethicone mixture. Once completely swollen, Aluminium Chlorohydrate is added portion wise under stirring until the mixture was homogeneous and without lumps. The aerosol cans are filled with 25 % Suspension of the suspension and 75 % of Propane / Butane (2,5 bar).

[0962] Example 23 Antiperspirant spray emulsion composition

[0963] A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in antiperspirant spray emulsion composition to add the equivalent of 0.2% perfume.

[0964] Table 29: Antiperspirant spray emulsion composition.

[0965] Ingredient Amount (wt %) Polysorbate 651) (Part A) 0.95

[0966] Polyglyceryl-2 dipolyhydroxystearate2) 1.05

[0967] (Part A)

[0968] Cetyl PEG / PPG-10 / 1 Dimethicone3) 2.75

[0969] (Part A)

[0970] Cyclomethicone4) (Part A) 16.4

[0971] Isopropylisostearate5) (Part A) 4.5

[0972] Phenoxyethanol6) (Part A) 0.5

[0973] Ethylhexylglycerin7) (Part A) 0.2

[0974] C12-15 Alkyl Benzoate8) (Part A) 5.65

[0975] Silica Silylate9) (Part A) 0.1

[0976] Sodium Methylparaben10) (Part B) 0.1

[0977] Aluminium Chlorohydrate11) (Part B) 20

[0978] Water (Part B) 44.47

[0979] Fragrance (Part C) 3.33

[0980]

[0981] 1) Tween 65; trademark and origin : CRODA

[0982] 2) Dehymuls PGPH; trademark and origin : BASF

[0983] 3) Abil EM-90; trademark and origin : BASF

[0984] 4) Dow Corning 345 fluid; trademark and origin : Dow Corning

[0985] 5) Crodamol ipis; trademark and origin : CRODA

[0986] 6) Phenoxyethanol; trademark and origin : LANXESS

[0987] 7) Sensiva sc 50; trademark and origin : KRAFT

[0988] 8) Tegosoft TN; trademark and origin : Evonik

[0989] 9) Aerosil R 812; trademark and origin : Evonik 10) Nipagin mna; trademark and origin : CLARIANT

[0990] 11) Locron L; trademark and origin : CLARIANT

[0991] The ingredients of Part A and Part B are weighted separately. Ingredients of Part A are heated up to 60°C and ingredients of Part B are heated to 55 °C. Ingredients of Part B are poured small parts while continuous stirring into A. Mixture were stirred well until the room temperature was reached. Then, ingredients of part C are added. The emulsion is mixed and is introduced into the aerosol cans. The propellant is crimped and added.

[0992] Aerosol filling: 30% Emulsion: 70% Propane I Butane 2,5 bar

[0993] Example 24

[0994] Deodorant spray composition

[0995] A sufficient amount of exemplified microcapsulesl to 6 is weighed and mixed in antiperspirant deodorant spray composition to add the equivalent of 0.2% perfume.

[0996] Table 30: Deodorant spray composition.

[0997] Ingredient Amount (wt %)

[0998] Ethanol 95 % 90.65

[0999] Triclosan1) 0.26

[1000] Isopropyl miristate 9.09

[1001]

[1002] 1) Irgasan® DP 300; trademark and origin : BASF

[1003] All the ingredients according to the sequence of the Table 30 are mixed and dissolved. Then the aerosol cans are filled, crimp and the propellant is added (Aerosol filling: 40% active solution 60% Propane I Butane 2.5 bar).

[1004] Example 25

[1005] Antiperspirant roll-on emulsion composition A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in antiperspirant roll-on emulsion composition to add the equivalent of 0.2% perfume.

[1006] Table 31: Antiperspirant roll-on emulsion composition.

[1007] Ingredient Amount (wt %)

[1008] Steareth-21) (Part A) 3.25

[1009] Steareth-212) (Part A) 0.75

[1010] PPG-15 Stearyl Ether3) (Part A) 4

[1011] WATER deionised (Part B) 51

[1012] Aluminum Chlorohydrate 50% 40

[1013] aqueous solution4) (Part C)

[1014] Fragrance (Part D) 1

[1015]

[1016] 1) BRU 72; origin : ICI

[1017] 2) BRU 721; origin : ICI

[1018] 3) ARLAMOL E; origin : UNIQEMA-CRODA

[1019] 4) LOCRON L; origin : CLARIANT

[1020] Part A and B are heated separately to 75°C; Part A is added to part B under stirring and the mixture is homogenized for 10 minutes. Then, the mixture is cooled down under stirring; and part C is slowly added when the mixture reached 45°C and part D when the mixture reached at 35 °C while stirring. Then the mixture is cooled down to RT.

[1021] Example 26

[1022] Antiperspirant roll-on composition

[1023] A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in antiperspirant roll-on composition to add the equivalent of 0.2% perfume.

[1024] Table 32: Antiperspirant roll-on composition.

[1025] Ingredient QUANTITY

[1026]

[1027] Water (Part A) 45

[1028] Aluminum Chlorohydrate 50% aqueous 20

[1029] solution1) (Part B)

[1030] Alcohol Denat. (Ethanol 96%) (Part B) 30

[1031] Ceteareth-122) (Part C) 2

[1032] Ceteareth-303) (Part C) 2

[1033] Fragrance (Part D) 1

[1034]

[1035] 1) LOCRON L; origin: CLARIANT

[1036] 2) EUMULGIN B-1; origin : BASF

[1037] 3) EUMULGIN B-3; origin : BASF

[1038] The ingredients of part B are mixed in the vessel then ingredient of part A is added. Then dissolved part C in part A and B. With perfume, 1 part of Cremophor RH40 for 1 part of perfume is added while mixing well

[1039] Example 27

[1040] Antiperspirant roll-on composition

[1041] A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in antiperspirant roll-on emulsion composition to add the equivalent of 0.2% perfume.

[1042] Table 33: Antiperspirant roll-on emulsion composition.

[1043] Ingredient Amount (wt %)

[1044] Water (Part A) 50.51

[1045] Hydroxyethylcellulose1) (Part A) 0.71

[1046] Ethanol 95 % (Part B) 40.40

[1047] 1,2-Propylene Glycol (Part B) 5.05

[1048] Triclosan2) (Part B) 0.30

[1049] PEG-40 Hydrogenated castor oil3) (Part C) 3.03

[1050]

[1051] 1) Natrosol® 250 H; trademark and origin: Ashland

[1052] 2) Irgasan® DP 300; trademark and origin : BASF

[1053] 3) Cremophor® RH 40; trademark and origin : BASF Part A is prepared by sprinkling little by little the Hydroxyethylcellulose in the water whilst rapidly stirring with the turbine. Stirring is continued until the Hydroxyethylcellulose is entirely swollen and giving a limpid gel. Then, Part B is poured little by little in Part A whilst continuing stirring until the whole is homogeneous. Part C is added.

[1054] Example 28

[1055] Deodorant pump without alcohol formulation

[1056] A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in the following composition to add the equivalent of 0.2% perfume.

[1057] Table 34: Deodorant composition.

[1058] Ingredients Amount (wt %)

[1059] C12-15 Alkyl 5

[1060] Lactate1)

[1061] Dimethicone2) 91.6

[1062] Cetyl Lactate3) 1

[1063] Octyldodecanol4) 0.8

[1064] Triclosan5) 0.1

[1065] PERFUME 1.5

[1066]

[1067] 1) Ceraphyl 41; trademark and origin ASHLAND

[1068] 2) DOW CORNING 200 FLUID 0.65cs; trademark and origin DOW CORNING CORPORATION

[1069] 3) Ceraphyl 28; trademark and origin ASHLAND

[1070] 4) Eutanol G; trademark and origin BASF

[1071] 5) Irgasan® DP 300; trademark and origin : BASF

[1072] All the ingredients are mixed according to the sequence of the Table 34 and the mixture is heated slightly to dissolve the Cetyl Lactate.

[1073] Example 29 Deodorant pump with alcohol formulation

[1074] A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in the following composition to add the equivalent of 0.2% perfume.

[1075] Table 35: Deodorant composition.

[1076] Ingredients Amount

[1077] (wt %)

[1078] Ethyl Alcohol (Part A) 60

[1079] PEG-6 Capryl ic / Capric Glycerides1) (Part A) 2

[1080] Water (Part A) 35.6

[1081] PEG-40 Hydrogenated Castor Oil2) (Part B) 0.4

[1082] PERFUME (Part B) 2

[1083]

[1084] 1) Softigen 767; trademark and origin CRODA

[1085] 2) Cremophor® RH 40; trademark and origin : BASF

[1086] Ingredients from Part B are mixed together. Ingredients of Part A are dissolved according to the sequence of the Table 35 and are poured into part B.

[1087] Example 30

[1088] Talc formulation

[1089] A sufficient amount of granules A-E is weighed and mixed in introduced in a standard talc base: 100% talc, very slight characteristic odor, white powder, origin: LUZENAC to add the equivalent of 0.2% perfume.

[1090] Example 31

[1091] Shower-gel Reference

[1092] A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in the following composition to add the equivalent of 0.2% perfume. Table 36: Shower gel composition.

[1093] Ingredients Amount Function

[1094] (% wt)

[1095] WATER deionised 49.350 Solvent Tetrasodium EDTA1) 0.050 Chelating agent Acrylates Copolymer2) 6.000 Thickener Sodium C12-C15 Pareth Sulfate3) 35.000 Surfactant Sodium Hydroxide 20% aqueous solution 1.000 pH adjuster Cocamidopropyl Betaine4) 8.000 Surfactant Methylchloroisothiazolinone and Methylisothiazolinone5) 0.100 Preservative Citric Acid (40%) 0.500 pH adjuster

[1096]

[1097] 1) EDETA B POWDER; trademark and origin: BASF

[1098] 2) CARBOPOL AQUA SF-1 POLYMER; trademark and origin: NOVEON

[1099] 3) ZETESOL AO 328 U; trademark and origin: ZSCHIMMER & SCHWARZ

[1100] 4) TEGO-BETAIN F 50; trademark and origin: GOLDSCHMIDT

[1101] 5) KATHON CG; trademark and origin: ROHM & HASS

[1102] Ingredients are mixed, pH is adjusted to 6-6.3 (Viscosity: 4500cPo + / -1500cPo (Brookfield RV / Spindle#4 / 20RPM)).

[1103] Example 32

[1104] Shower-gel composition

[1105] A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in the following composition to add the equivalent of 0.2% perfume.

[1106] Table 37: Shower gel composition.

[1107] Ingredients Amount (% wt) Function WATER deionized 52.40 Solvent Tetrasodium EDTA1) 0.10 Chelating agent Sodium Benzoate 0.50 Preservative

[1108]

[1109] Propylene Glycol 2.00 Solvent Sodium C12-C15 Pareth Sulfate2) 35.00 Surfactant Cocamidopropyl Betaine3) 8.00 Surfactant Polyquaternium-74) 0.20 Conditioning agent Citric Acid (40%) 1.00 pH adjuster Sodium Chloride 0.80 Viscosity adjuster

[1110]

[1111] 1) EDETA B POWDER; trademark and origin: BASF

[1112] 2) ZETESOL AO 328 U; trademark and origin: ZSCHIMMER & SCHWARZ

[1113] 3) TEGO-BETAIN F 50; trademark and origin: GOLDSCHMIDT

[1114] 4) MERQUAT 550; trademark and origin: LUBRIZOL

[1115] Ingredients are mixed, pH is adjusted to 4.5 (Viscosity: 3000cPo + / -1500cPo (Brookfield R I Spindle#4 / 20RPM)).

[1116] Example 33

[1117] Shower-gel composition

[1118] A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in the following composition to add the equivalent of 0.2% perfume.

[1119] Table 38: Shower-gel composition.

[1120] Ingredients Amount Function

[1121] (% wt)

[1122] WATER deionized 50.950 Solvent Tetrasodium EDTA1) 0.050 Chelating agent Sodium Benzoate 0.500 Preservative Glycerin 86% 3.500 Solvent Sodium Laureth Sulfate2) 27.000 Surfactant Polyquaternium-73) 1.000 Conditioning Agent Coco-Betaine4) 6.000 Surfactant PEG-120 Methyl Glucose trioleate5) 1.000 Thickener

[1123]

[1124] Citric Acid (40%) 1.000 pH adjuster Glycol Distearate & Laureth-4 & Cocamidopropyl Betaine6) 3.000 Pearlizing agent Sodium Chloride 20% 5.000 Viscosity adjuster PEG-40 Hydrogenated Castor Oil7) 1.000 Viscosity adjuster

[1125]

[1126] 1) EDETA B POWDER; trademark and origin: BASF

[1127] 2) Texapon NSO IS; trademark and origin: COGNIS

[1128] 3) MERQUAT 550; trademark and origin: LUBRIZOL

[1129] 4) DEHYTON AB-30; trademark and origin: COGNIS

[1130] 5) GLUCAMATE LT; trademark and origin: LUBRIZOL

[1131] 6) EUPERLAN PK 3000 AM; trademark and origin: COGNIS

[1132] 7) CREMOPHOR RH 40; trademark and origin: BASF

[1133] Ingredients are mixed, pH is adjusted to 4.5 (Viscosity: 4000cPo + / -1500cPo (Brookfield R I Spindle#4 / 20RPM))

[1134] Example 34

[1135] Hand Dishwash

[1136] A sufficient amount of exemplified microcapsules 1 to 6 is weighed and mixed in the following composition to add the equivalent of 0.2% perfume.

[1137] Table 39: Shower gel composition.

[1138] Ingredients Amount (% wt) Function

[1139] Linear alkylbenzene sulfonic acid 20 Anionic surfactant

[1140] (1)

[1141] Diethanolamide (2) 3.5 Foam booster

[1142] Sodium Hydroxide (50%) (3) 3.4 pH Adjuster / neutralizer Secondary alcohol ethoxolate (4) 2.5 Non-ionic surfactant Sodium xylene sulfonate 6.3 Hydrotrope

[1143] Water 64.3 Solvent

[1144]

[1145] 1) Biosoft S-118®; trademark and origin : Stepan Company 2) Ninol 40-CO®; trademark and origin : Stepan Company

[1146] 3) Stepanate SXS®; trademark and origin : Stepan Company

[1147] 4) Tergitol 15-S-9®; trademark and origin : Dow Chemical Company

[1148] Water with sodium hydroxide and diethanolamide are mixed. LAS is added. After the LAS is neutralized, the remaining ingredients are added. The pH was Checked (=7-8) and adjusted if necessary.

[1149] Example 35

[1150] Soap bar formulation

[1151] A soap bar composition including exemplified microcapsules 1 to 6 is prepared at a concentration of 7.5% w / w.

[1152] Table 40: Composition of soap formulation.

[1153] Soap

[1154] Ingredients Formulation (%)

[1155] Surfactants

[1156] Sodium Linear Alkyl Benzene

[1157] Solfonate

[1158] Soap 10 to 25

[1159] Alpha Olefin Sulfonate (AOS)

[1160] sodium lauryl sulfate

[1161] Builders

[1162] Sodium Carbonate 5 to 15

[1163] Sodium Tri Polyphospate

[1164] Zeolite

[1165] Fillers

[1166] Sodium Sulphate 5 to 30

[1167] Talc 5 to 30

[1168] Dolamite 5 to 50

[1169]

[1170] China Clay 5 to 50 Calcite - Calcium Carbonate

[1171] Sodium Cholride 5 to 20 Structuring Ingredients

[1172] Aluminium Sulphate 0.5 to 5 Alkaline Silicate 1 to 5 Others

[1173] Colour 0.1 to 1 Perfume 0.1 to 1 Moisture 5 to 15

[1174]

Claims

CLAIMS1. A process for preparing a core-shell microcapsule comprising the steps of:(a) mixing a hydrophobic phase comprising a hydrophobic material, preferably a perfume oil or a flavor oil, and an aqueous phase comprising a first polyelectrolyte and, optionally, a second polyelectrolyte having an opposite net charge to the first polyelectrolyte, to form an oil-in-water emulsion,(b) adding an enzyme, preferably an oxidoreductase, to the mixture of step (a), optionally, adding a or said second polyelectrolyte having an opposite net charge to the first polyelectrolyte,(c) providing conditions sufficient to induce crosslinking to the mixture of step (b) by the enzyme, preferably the oxidoreductase, to form a core-shell microcapsule.

2. The process according to claim 1 , wherein the pH value of the mixture of step (a) or (b) is adjusted to a pH < 9, preferably to a pH < 7, even more preferably to a pH < 5.

3. The process according to any of the previous claims, wherein the mixture is obtained in step (b) in a temperature range from 5-100°C, preferably in the range of 20-90°C, more preferably 20-70°C.

4. The process according to any of the previous claims, wherein the enzyme, preferably the oxidoreductase, is a phenol-oxidase (E1.10.), such as catechol oxidase (EC 1.10.3.1), tyrosinases (EC 1.14.18.1) and laccase (E1.10.3.2), or horseradish peroxidase (EC 1.11.1.7).

5. The process according to any of the previous claims, wherein the enzyme, preferably the oxidoreductase, is used in an amount of from 0.01 to 10 units per 1 gram of total polyelectrolyte, preferably from 0.1 to 1 units per 1 gram of total polyelectrolyte.

6. The process according to any of the previous claims, wherein the hydrophobic phase further comprises a crosslinker, preferably wherein the hydrophobic phase comprises a polyisocyanate crosslinker, a poly acid chloride crosslinker, an acrylate crosslinker, a methacrylate crosslinker, a functional silane, a multi-functionalized aldehyde, a multifunctionalized anhydride, or mixtures thereof.

7. The process according to any of the previous claims, wherein the process further comprises that a second polyelectrolyte having an opposite net charge to the first polyelectrolyte is added to the mixture in step (a) and / or is added to the mixture in step (b), wherein one polyelectrolyte has a positive net charge and the other polyelectrolyte has a negative net charge.

8. The process according to any of the previous claims, wherein the polyelectrolytes comprise at least one functional group selected from the group consisting of amines, thiols, acetoacetates, phenols and mixtures thereof.

9. The process according to any of the previous claims, wherein the first polyelectrolyte comprises, preferably consists of, a biopolymer and / or an amino functionalized colloidal particle, preferably wherein the first polyelectrolyte comprises, preferably consists of, a protein, a polysaccharide, a modified polysaccharide, amino-functionalized silica particles, amino-functionalized clay particles, amino-functionalized polymeric particles or a polyphenol, more preferably, wherein the first polyelectrolyte comprises, preferably consists of, a plant-based protein, amino-functionalized silica particles, or a plant-derived polyphenol, even more preferably the first polyelectrolyte comprises, preferably consists of, a potato protein or amino-functionalized silica particles.

10. The process according to any of the previous claims, wherein the second polyelectrolyte comprises, preferably consists of, a biopolymer preferably wherein the second polyelectrolyte comprises, preferably consists of, protein, pectin, modified polysaccharides comprising at least one aldehyde and / or at least one acetoacetate and / or polyphenol group, more preferably wherein the second polyelectrolyte comprises, preferably consists of, a sugar beet pectin and / or citrus pectin.

11. The process according to any of the previous claims, wherein the aqueous phase further comprises a crosslinker, wherein said crosslinker preferably comprises a phenolic compound.

12. A core-shell microcapsule comprising• an oil-based core comprising a hydrophobic material, preferably a perfume or a flavor oil, and• a polymeric shell comprising a crosslinked first polyelectrolyte and, a second polyelectrolyte having an opposite net charge to the first polyelectrolyte, wherein the crosslinking of the first and the second polyelectrolyte is at least partly achieved by an enzyme, preferably an oxidoreductase,optionally, wherein the polymeric shell further comprises polyurea, polyurethane, polyamide, polyester, polyimine, polyacrylate, polymethacrylate, polysiloxane, or mixtures thereof, wherein preferably the core-shell microcapsule is obtained by the process of any of claims 1 to 11.

13. The core-shell microcapsule according to claim 12, wherein at least one crosslinking site of the first polyelectrolyte and / or, optionally, the second polyelectrolyte is a phenolic carbon.

14. The core-shell microcapsule according to any of claims 12 to 13, wherein the core-shell microcapsule comprises the polyelectrolyte(s) in the range of 0.1 to 20% by weight, preferably by 0.1 to 10% by weight.

15. The use of a core-shell microcapsule according to any of claims 12 to 14 to enhance, prolong, modify the olfactive effect of a perfume oil in a consumer product.

16. A consumer product comprising• a consumer base and• a core-shell microcapsule according to any of claims 12 to 15,wherein the consumer product is preferably in the form of a home-care product or a personal care product.

17. A consumer product according to claim 16, wherein the consumer product is a fabric softener, fabric conditioner, detergent, scent booster, fabric refresher spray, hair dye, hair moisturizer, skin moisturizer, hair treatment, skin treatment, antiperspirant, deodorant, insect repellant, candle, surface cleaner, bathroom cleaner, bleach, cat litter, refresher spray, pesticide, insecticide, herbicide, fungicide or paint.

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