Anhydrous dispersion of at least one particulate material comprising a polyol and a dispersing polymer soluble in said polyol

Abstract

Anhydrous dispersion of at least one particulate material comprising a polyol and a dispersing polymer soluble in said polyol The present invention therefore relates to an anhydrous dispersion (A) of particulate material(s), comprising, in particular in a physiologically acceptable medium: a) at least one polyol and; b) at least one polymeric dispersing agent soluble in said polyol; etc.) at least one particulate material. The invention also relates to a composition (B) for caring for and / or making up keratin materials comprising, in particular in a physiologically acceptable medium: a) at least one aqueous phase; b) an anhydrous dispersion (A) of particulate material(s) obtained by at least one step gt grinding of the polyol(s), of said polymeric dispersing agent and of said particulate material(s).

Description

Title of the invention: Anhydrous dispersion of at least one particulate material comprising a polyol and a dispersing polymer soluble in said polyol

[0001] The present invention relates to the field of solid cosmetic care and / or makeup compositions.

[0002] Cosmetic compositions, for example foundations, are commonly used to provide an aesthetic color to the skin, but also to beautify uneven skin by hiding spots and discolorations, reducing the visibility of relief imperfections such as pores and wrinkles, and masking spots and traces of acne. In this respect, coverage, color and obtaining a natural finish are the main properties sought.

[0003] Cosmetic compositions conventionally use a particulate phase, particularly in makeup, with the use of pigments, particularly inorganic pigments such as titanium dioxide and iron oxides, to provide color. It is known that particles such as pigments can be used in the form of a dispersion in which the particles are dispersed in a dispersion medium to facilitate good color development. This is disclosed in particular in patent JP 2012-097259 A.

[0004] Techniques have further been developed to provide a particulate phase, such as pigments, surface-treated to make the particulate phase more resistant to water, sweat, rain, etc. This is disclosed in particular in patents WO 2013 / 018827, WO 2015 / 125622, JP 2016-74660 A.

[0005] However, there remains a need for improvement to improve the quality of the particle dispersion and the stability of both the particle dispersion, and also the cosmetic composition into which the particle dispersion is introduced.

[0006] There are dispersions of particles in aqueous phase such as those described in patents JP 2012-097259 A, WO 2013 / 018827, WO 2015 / 125622, JP 2016-74660 A, which disclose dispersions of particles in water. However, there is still room for improvement to further increase the stability of the dispersion of the particles in order to provide a stable liquid dispersion. Furthermore, the presence of water, which is a volatile compound, requires the use of a sealed container during storage. This represents a constraint and a cost.

[0007] There are also particulate preparations such as those described in patent EP3466399 B1, which discloses anhydrous dispersions of particles made hy drophobic, and dispersible in an aqueous phase. However, these particulate preparations use a non-ionic surfactant as a dispersing agent, which needs to be used in significant quantities in order to obtain a fluid consistency of the particulate preparations, and a good quality of dispersion of the particulate preparations in the aqueous phase. There is therefore room for improvement in using a dispersing agent in a smaller proportion, in particular to reduce the risk of water sensitivity of the particulate preparation after having introduced it in the aqueous phase in a cosmetic composition, while making it possible to obtain a fluid consistency of the particulate preparations, and a good quality of dispersion of the particulate preparations in the aqueous phase.

[0008] Furthermore, the use of a non-ionic surfactant as a dispersing agent may possibly interfere, when introduced into an emulsion, with the surfactant system of the emulsion, and thus disrupt its stability. Consequently, there remains room for improvement in using a dispersing agent in the smallest possible amount, so that, when introduced into an emulsion, it does not disrupt the stability of the emulsion.

[0009] FR2996131B1, FR2996132B1, FR2996134 B1 and patent applications WO 2014053576, WO2023285365, FR 3124933, WO2023 / 285363, FR 3124932 disclose compositions for caring for and / or making up keratin materials with a dispersing polymer comprising a main chain and at least one side chain grafted onto the main chain; said main chain being derived from at least one monomer comprising at least one α,[3-monoethylenic unsaturation and at least one function chosen from the group consisting of the functions: carboxylic acid, carboxylic acid ester, carboxylic acid salt and their mixtures; said side chain comprising at least one linear or branched C2-C8 alkyleneoxy radical or a mixture of alkyleneoxy radicals; said side chain being optionally substituted by a linear or branched alkyl chain comprising from 1 to 6 carbon atoms.

[0010] It is further desirable to be able to provide a particulate preparation in the form of a liquid dispersion because this will simplify dispersion in a dispersion medium. However, the particulate preparation, particularly inorganic pigments, tends to sediment in a dispersion medium, so that unfortunately, the stability of the dispersion is poor, and caking and phase separation (such as color separation) may occur. It is therefore difficult to provide a stable particulate preparation of particularly inorganic particles. Therefore, it is desirable to obtain a particulate preparation which does not sediment over time.

[0011] The applicant surprisingly discovered that this objective was achieved with an anhydrous dispersion (A) of particulate matter(s) comprising, in particular in a physiologically acceptable medium: (a) at least one polyol and; b) at least one polymeric dispersing agent soluble in said polyol; and c) at least one particulate material.

[0012] This discovery is the basis of the invention. Objects of the invention

[0013] The present invention therefore relates to an anhydrous dispersion (A) of particulate material(s), comprising, in particular in a physiologically acceptable medium: a) at least one polyol and; b) at least one polymeric dispersing agent soluble in said polyol; and c) at least one particulate material.

[0014] Another subject of the invention relates to a process for manufacturing an anhydrous dispersion (A) of particulate material(s) as defined above, comprising at least one step of grinding said polyol(s), said polymeric dispersing agent and said particulate material(s).

[0015] Another subject of the invention relates to a dispersion (A) capable of being obtained by said manufacturing process.

[0016] Another subject of the invention also relates to a composition (B) for caring for and / or making up keratin materials comprising, in particular in a physiologically acceptable medium: a) at least one aqueous phase; b) an anhydrous dispersion (A) of particulate material(s) as defined above, and in particular obtained by at least one step of grinding said polyol(s), said polymeric dispersing agent and said particulate material(s).

[0017] The invention also relates to a process for coating keratin materials, more particularly for caring for and / or making up keratin materials, such as the skin, characterized in that it comprises the application to the keratin materials of the composition (B) as defined above. Definitions

[0018] In the context of the present invention, the term “keratin material” is understood to mean in particular the skin (body, face, eye contour, eyelids).

[0019] By "physiologically acceptable" is meant compatible with the skin and / or its appendages, which has a pleasant color, odor and feel and which does not generate unacceptable discomfort (tingling, tightness), likely to divert the consumer to use this composition.

[0020] For the purposes of the present invention, the term "anhydrous" means a composition comprising a content of less than 1.0%, more preferably less than 0.5% by weight relative to the total weight of said composition or even free of water. Where appropriate, such small quantities of water may in particular be provided by ingredients of the composition which may contain residual quantities thereof.

[0021] By "particulate matter" is meant solid particles, of all shapes, which are in an insoluble form and dispersed in the medium of the composition. Polyol

[0022] The composition according to the invention comprising a) at least one polyol.

[0023] For the purposes of the present invention, the term “polyol” means any organic molecule comprising at least two free hydroxyl groups.

[0024] The polyol(s) in accordance with the present invention are present in liquid form at room temperature (20-25°C) and atmospheric pressure (760 mm Hg).

[0025] A polyol suitable for the invention may be a compound of alkyl type, linear, branched or cyclic, saturated or unsaturated, carrying on the alkyl chain at least two -OH functions, in particular at least three -OH functions, and more particularly at least four -OH functions.

[0026] The polyols advantageously suitable for the formulation of a composition according to the present invention are those having in particular from 2 to 32 carbon atoms, preferably 3 to 16 carbon atoms.

[0027] Advantageously, the polyol may be chosen, for example, from ethylene glycol, pentaerythritol, trimethylolpropane, propylene glycol, 1,2-propanediol, 1,3-propanediol, 1,3-butylene glycol, isoprene glycol, pentylene glycol, hexylene glycol, glycerin, polyglycerols, such as glycerol oligomers such as diglycerol, polyethylene glycols, and mixtures thereof.

[0028] According to a preferred embodiment of the invention, the composition according to the invention comprises at least 1,3-butylene glycol.

[0029] According to another preferred embodiment of the invention, the composition according to the invention comprises a mixture of glycerin and 1,3-butylene glycol, preferably with a mass ratio between 1,3-butylene glycol and glycerin ranging from 1 to 5, more preferably ranging from 2 to 4.

[0030] The polyol(s) is (are) present, preferably at a content ranging from 10 to 60% by weight, and more preferably from 20 to 50% by weight relative to the total weight of the composition. Polymeric dispersing agent

[0031] The composition according to the invention comprises a) at least one polyol and b) at least one dispersing polymeric agent soluble in said polyol.

[0032] By “polymeric dispersing agent” is meant any polymer used in the composition according to the invention to prevent agglomeration or flocculation of the dispersed particles.

[0033] The polymeric dispersing agents in accordance with the invention are preferably solid at room temperature (25°C) and atmospheric pressure.

[0034] Preferably, the polymeric dispersing agent comprises a main chain and at least one side chain grafted onto the main chain, said main chain being derived from at least one monomer comprising at least one α,[3-monoethylenic unsaturation and at least one function chosen from the group consisting of the functions: carboxylic acid, carboxylic acid ester, carboxylic acid salt and mixtures thereof; said side chain comprising at least one linear or branched C2-C8 alkyleneoxy radical or a mixture of alkyleneoxy radicals; said side chain being optionally substituted by a linear or branched alkyl chain comprising from 1 to 6 carbon atoms.

[0035] According to a particular embodiment, the dispersant polymers consist of a main chain and several grafted side chains optionally substituted at their end by an alkyl group comprising less than 6 carbon atoms.

[0036] In the context of the invention, and unless otherwise stated, the term "main chain" includes the terms "skeletal chain" or "skeleton" of the polymer. The main chain, comprising the highest number of carbon atoms, differs from the side chains.

[0037] In the context of the present invention, the expression "chain (...) derived from at least one monomer" means that said chain corresponds to the polymer obtained by polymerization of said monomer.

[0038] The dispersing polymers according to the invention are therefore also called "comb copolymers", the branches of the comb corresponding to the side chains (or pendant chains) made up of grafts.

[0039] The main chain of the dispersant polymers according to the invention comprises at least one carboxylic acid function or an ester or a salt thereof. It may also comprise mixtures of these functions, esters and salts.

[0040] The main chain can therefore comprise pendant functions COOH, COOAlk or COO-X+, or mixtures thereof, where Alk represents an alkyl group comprising from 1 to 6 carbon atoms and X represents an alkali or alkaline-earth metal, or X+ represents a quaternary ammonium.

[0041] By "alkyl group" is meant here a saturated, linear or branched, aliphatic hydrocarbon group comprising, unless otherwise stated, from 1 to 6 carbon atoms. Examples include methyl, ethyl, n-propyl, isopropyl, butyl, isobutyl, tert-butyl or pentyl groups.

[0042] In the context of the present invention, the term "quaternary ammonium" designates a cation obtained, in particular by alkylation, from an amine of formula NR1R2R3, each of the groups RB R2 and R3, identical or different, representing H or an alkyl group comprising from 1 to 6 carbon atoms. In particular, the quaternary ammoniums according to the invention include the ammonium cation NH4+.

[0043] According to a particular embodiment, the dispersant polymers consist of a main chain and several grafted side chains substituted at their end by an alkyl group comprising less than 6 carbon atoms, and preferably by a methyl group.

[0044] In the context of the invention, the expression "side chain grafted onto the main chain" means that the side chain is connected to the main chain via a covalent bond.

[0045] For example, mention may be made of poly(ethylene oxide) and / or poly(propylene oxide) chains grafted via an ester function to the main chain, the ester function being able to result from the reaction between a carboxylic acid function of the monomer of the main chain and a hydroxyl function of the poly(ethylene oxide) and / or the poly(propylene oxide).

[0046] In the context of the invention, the term "alkyleneoxy radical" means a radical -A'-O- in which A' represents an alkylene radical. By "alkylene radical" is meant a divalent radical derived from an alkyl group as defined above lacking two hydrogen atoms. The alkyleneoxy radicals can be linear or branched, A' can therefore represent a linear or branched alkylene radical, comprising in particular from 2 to 8 carbon atoms. Preferably, the alkyleneoxy radicals comprise 2 or 3 carbon atoms.

[0047] Examples include the groups -CH2-CH2-O- (ethyleneoxy), -CH2-CH(CH3)-O-, -CH(CH3)-CH2-O- or -CH2-CH2-CH2-O- (propyleneoxy).

[0048] In the context of the present invention, the side chains of the Dispersant polymers may comprise mixtures of alkyleneoxy radicals of different sizes. According to this embodiment, the side chain may comprise a mixture of radicals -(A'rO) and (A'2-O)-, A\ and A'2 representing different linear or branched alkylene radicals. In particular, the side chain may comprise a mixture of ethyleneoxy and propyleneoxy radicals.

[0049] The side chain(s) of the dispersant polymer may be substituted by a linear or branched alkyl chain comprising from 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms, and preferably 1 to 2 carbon atoms.

[0050] According to one embodiment, the main chain of the dispersing polymer is derived from at least one monomer chosen from (meth)acrylic acids, their esters, their salts and mixtures thereof.

[0051] According to this embodiment, the main chain of the polymer is chosen from poly(meth)acrylic acids, poly(meth)acrylic acid esters, poly(meth)acrylates and mixtures thereof.

[0052] According to one embodiment, the main chain of the dispersing polymer is derived from a methacrylic acid salt, in particular sodium methacrylate. According to this embodiment, the main chain of the dispersing polymer is sodium polymethacrylate.

[0053] The dispersant polymers comprise, in addition to the main chain, one or more side chains, grafted onto said main chain. In other words, the polymers according to the invention consist of a main polymer chain comprising a given function (carboxylic acid, or a salt or ester thereof) via which the side chains are connected.

[0054] The dispersant polymers may be represented as consisting of a given number of repeating units comprising repeating units derived from (meth)acrylic acids, their esters, their salts and mixtures thereof, and grafted units, derived from the preceding, comprising a graft comprising at least one alkyleneoxy radical as defined above, optionally substituted by an alkyl chain as defined above.

[0055] According to one embodiment, the dispersing polymer comprises at least one unsubstituted side chain. Preferably, all the side chains of the dispersing polymer are unsubstituted. By "unsubstituted side chain" is meant a side chain as defined comprising at least one linear or branched C2-C8 alkyleneoxy radical or a mixture of alkyleneoxy radicals, and comprising a terminal hydrogen atom.

[0056] According to one embodiment, the dispersing polymer comprises at least one side chain substituted by a methyl or ethyl chain, in particular methyl. Preferably, the side chains of the dispersing polymer are substituted by a methyl chain.

[0057] According to one embodiment, the dispersing polymer comprises at least one side chain consisting of ethyleneoxy, propyleneoxy radicals or mixtures thereof. Preferably, the side chains of the dispersing polymer consist of ethyleneoxy, propyleneoxy radicals or mixtures thereof.

[0058] According to one embodiment, the side chains of the polymer can be distributed randomly, statistically or in the form of sequences (block or sequence copolymers).

[0059] The dispersing polymers according to the invention may be block copolymers corresponding to the assembly, on the one hand, of blocks with side chains and, on the other hand, of blocks without side chains.

[0060] Preferably, the side chains of the dispersing polymer are distributed randomly or statistically. Preferably, they are distributed statistically.

[0061] According to one embodiment, the dispersing polymer according to the invention is linear. In particular, it is not a crosslinked polymer.

[0062] According to a preferred embodiment, the dispersing polymer is a comb copolymer comprising a main chain of polymethacrylic acid (or one of its salts) grafted with polyethylene oxide and / or polypropylene oxide side chains.

[0063] According to one embodiment, the side chain comprises from 20 to 200, preferably from 50 to 150, and preferentially from 50 to 100, alkyleneoxy groups.

[0064] According to one embodiment, the side chain comprises only ethyleneoxy groups.

[0065] According to one embodiment, the side chain comprises only propyleneoxy groups.

[0066] According to one embodiment, the side chain comprises a mixture of ethyleneoxy groups and propyleneoxy groups, these being distributed randomly or statistically.

[0067] According to one embodiment, the mass average molecular weight (Mw) of the aforementioned dispersing polymer ranges from 10,000 to 4,000,000 g / mol, preferably from 20,000 to 2,000,000 g / mol, and even more preferably from 30,000 to 1,900,000 g / mol.

[0068] Preferably, the mass average molecular weight (Mw) of the aforementioned dispersant polymer ranges from 40,000 to 1,500,000, preferably from 42,000 to 1,000,000, preferably from 45,000 to 500,000, and more preferably from 50,000 to 100,000 g / mol.

[0069] According to a preferred embodiment, the mass average molecular weight (Mw) of the aforementioned dispersing polymer ranges from 20,000 to 300,000 g / mol, preferably from 20,000 to 200,000 g / mol, and preferentially from 30,000 g / mol to 120,000 g / mol. Preferably, the mass average molecular weight (Mw) of the aforementioned dispersing polymer ranges from 40,000 to 80,000 g / mol.

[0070] According to a particularly preferred embodiment, the mass-average molecular mass (Mw) of the aforementioned dispersing polymer ranges from 50,000 to 90,000 g / mol, preferably from 70,000 to 80,000 g / mol. Preferably, the molecular mass mass average (Mw) of the aforementioned dispersant polymer is equal to approximately 75,000 g / mol.

[0071] The choice of this appropriate range of molecular masses makes it possible to have a good compromise with regard to, on the one hand, a limitation of depletion phenomena and, on the other hand, an efficiency that is not sensitive to concentration.

[0072] According to one embodiment, the dispersing polymer according to the invention comprises at least one unit of the following formula (I): [Chem 1] (I) in which: - n is an integer ranging from 50 to 4,000, preferably from 60 to 2,500 - i is an integer ranging from 1 to n; - the groups R', identical or different, represent, independently of one another, H or an alkyl group, linear or branched, comprising from 1 to 10, preferably from 1 to 5, and preferentially 1 or 2, carbon atoms; and the groups R;, identical or different, are chosen, independently of each other, from the group consisting of: -C(=O)OH, -C(=O)O-X+ and -C(=O)O-(A)p-Ra, at least one of the groups Ri representing -C(=O)O-(A)p-Ra, where: - X is an alkali or alkaline-earth metal, in particular Na or K; or X+ represents a quaternary ammonium; - Rarely presents H or an alkyl group, linear or branched, comprising from 1 to 6, preferably from 1 to 4, and preferentially 1 or 2, carbon atoms; - A represents a linear or branched C2-C8 alkyleneoxy radical or their mixture; and - p is an integer ranging from 1 to 200, preferably from 50 to 150.

[0073] The dispersing polymer according to the invention can therefore consist of the repetition of n -CH2-CH(R'i)(Ri)- units, each of these units being able to be identical or different, depending on the nature of R; and R; for each unit, and at least one of these units comprising a -C(=O)O-(A)p-Ra group, corresponding to a grafted side chain.

[0074] According to one embodiment, the dispersing polymer according to the invention comprises at least one repeating unit (TJ) and at least one repeating unit (T2), said repeating units having the following respective formulas: [Chem 2] OR [Chem 3] in which: p is an integer ranging from 1 to 200, preferably from 50 to 150; X is H or an alkali or alkaline earth metal, and is in particular Na or K; or X+ represents a quaternary ammonium; Ra represents H or a linear or branched alkyl group comprising from 1 to 6, preferably from 1 to 4, and preferentially 1 or 2, carbon atoms; R and R', identical or different, represent, independently of one another, H or a linear or branched alkyl group, comprising from 1 to 10, preferably from 1 to 5, and preferentially 1 or 2, carbon atoms; and A represents a linear or branched alkyleneoxy radical, C2-C8, preferably C2-C3, or their mixture.

[0075] According to one embodiment, the dispersing polymer consists of x repeating units (Ti) and y repeating units (T2), these units being distributed randomly or statistically, where: x is an integer ranging from 50 to 3000, preferably from 60 to 1500; and y is an integer ranging from 5 to 1000, preferably from 5 to 600; the sum x+y corresponding to the number n defined above.

[0076] According to the invention, the repeating units (TJ and (T2)) can be randomly alternated in the aforementioned polymer.

[0077] According to the invention, the repeating units (TJ and (T2)) can be statistically alternated in the aforementioned polymer.

[0078] According to the invention, the repeating units (TJ and (T2)) can be distributed by blocks or sequences in the aforementioned polymer.

[0079] According to one embodiment, in formulas (I), (TJ and (T2) defined above, X represents Na.

[0080] According to one embodiment, in formulas (I) and (T2) defined above, each Ra represents H or a methyl group.

[0081] According to one embodiment, in formulas (I) and (T2) defined above, each Ra represents H.

[0082] According to one embodiment, in formulas (I) and (T2) defined above, each Ra represents a methyl group.

[0083] According to one embodiment, in formula (T1) defined above, R is H or a methyl group.

[0084] According to one embodiment, in formula (I) defined above, the groups R'; are H or a methyl group.

[0085] According to one embodiment, in formula (T2) defined above, R' is H or a methyl group.

[0086] According to one embodiment, in the formula (T2) defined above, the radical A corresponds to the following formula (II) or (III): [Chem 4] Or [Chem 5] in which: Ai represents a radical -CH2CH2O-; A2 represents a radical -CH2CH(CH3)O- or -CH(CH3)-CH2-O-; j and k, identical or different, represent, independently of one another, an integer ranging from 0 to 50, preferably from 0 to 25; provided that the sum j + k is greater than or equal to 1, and preferably greater than or equal to 50.

[0087]

[0088] According to one embodiment, the dispersing polymer corresponds to the following formula: [Chem. 6]

[0089]

[0090] in which: R'a is H or CH3; x is an integer ranging from 50 to 3000; y is an integer ranging from 5 to 1000; and p is an integer ranging from 20 to 200, the -CH2-C(R)(C(=O)Na)- and -CH2-C(R')(C(=O)O-(CH2-CH2-O)pR'a)- motifs being distributed randomly or statistically. Preferably, the dispersing polymer has the following formula: [Chem 7]

[0091]

[0092]

[0093] in which x, y and p are as defined above, the patterns -CH2-C(R)(C(=O)ONa)- and -CH2-C(R')(C(=O)O-(CH2-CH2-O)PCH3)- being distributed randomly or statistically, preferably statistically. According to one embodiment, the dispersing polymer is a copolymer derived from methacrylic acid and poly(ethylene oxide) methyl ether methacrylate. According to another embodiment, the polymer is a copolymer derived from methacrylic acid and poly(propylene oxide) methyl ether methacrylate. According to one embodiment, the dispersing polymer is a copolymer derived from acid methacrylic and poly(ethylene oxide)(propylene oxide) methyl ether methacrylate.

[0094] The dispersing polymer according to the invention is for example described in document US 6,034,208 and is obtained by known processes, and in particular by radical polymerization in solution, in direct or inverse emulsion, in suspension or precipitation in solvents, in the presence of initiating systems and transfer agents, or even in controlled radical polymerization and preferably in polymerization controlled by nitroxides (NMP) or by cobaloxyms, in radical atom transfer polymerization (ATRP), in radical polymerization controlled by sulfur derivatives, chosen from carbamates, dithioesters or trithiocarbonates (RAFT) or xanthates.

[0095] It can be totally or partially neutralized by one or more neutralizing agents having a monovalent or polyvalent cation, said agents being preferably chosen from ammonia or from hydroxides and / or oxides of calcium, magnesium, or from hydroxides of sodium, potassium, lithium, or from primary, secondary or tertiary aliphatic and / or cyclic amines such as preferably stearylamine, ethanolamines (mono-, di-, triethanolamine), mono and diethylamine, cyclohexylamine, methylcyclohexylamine, amino methyl propanol, morpholine, and preferably in that the neutralizing agent is chosen from triethanolamine and sodium hydroxide.

[0096] It can also be separated into several phases, according to static or dynamic processes, by one or more polar solvents preferably belonging to the group consisting of water, methanol, ethanol, propanol, isopropanol, butanols, acetone, tetrahydrofuran or their mixtures.

[0097] According to a particularly preferred embodiment of the present invention, the dispersing agent is a co-methacrylic acid copolymer of POE PPO OH: Polyether polycarbonate, sodium salt in aqueous solution.

[0098] Preferably, the dispersing polymer has the INCI name Sodium Methacrylate / PEG / PPG-45 / 15 Hydroxypropyl Methacrylate Copolymer.

[0099] A composition according to the invention preferably comprises a total content of polymeric dispersing agent(s) greater than or equal to 0.1% by weight, preferably greater than or equal to 0.5% by weight, even more preferably in a content ranging from 0.2% to 5% by weight relative to the total weight of the composition, in particular in a content ranging from 0.5% to 3% by weight relative to the total weight of the composition. Particulate matter

[0100] The anhydrous composition according to the invention comprises c) at least one particulate material.

[0101] The particulate material is preferably chosen from fillers, particulate coloring materials, and mixtures thereof. Charges

[0102] By "fillers" is meant colorless or white, solid particles of all shapes, which are in an insoluble form and dispersed in the medium of the composition. Of mineral or organic nature, they make it possible to give the composition softness, mattness and uniformity to the makeup.

[0103] The filler or fillers used in the composition of the invention is (are) chosen from mineral fillers, organic fillers and their mixtures.

[0104] The filler or fillers used in the composition of the invention is (are) present, preferably, at a content ranging from 40 to 90% by weight, more preferably from 50 to 80% by weight relative to the total weight of the pulverulent phase.

[0105] Among the mineral fillers that can be used in the compositions according to the invention, mention may be made of talcs, natural micas, synthetic micas such as fluorphlogopite, silica, magnesium and aluminum silicates, kaolin, bentone, calcium carbonate and magnesium hydrogen carbonate, hydroxyapatite, boron nitride, hollow silica microspheres (Silica Beads from Maprecos), silica-based fillers such as Aerosil 200®, Aerosil 300®; Sunsphere H-33®, Sunsphere H-51® marketed by Asahi Glass; Chemicelen® marketed by Asahi Chemical; silica and titanium dioxide composites, such as the TSG® series marketed by Nippon Sheet Glass, perlite powders, and mixtures thereof.

[0106] Among the organic fillers that can be used in the compositions according to the invention, mention may be made of polyamide powders (Nylon® Orgasol from Atochem), poly-[3-alanine and polyethylene, polytetrafluoroethylene powders (Teflon®), lauroyl-lysine, starches such as native corn starches with the INCI name: ZEA MAYS (CORN) STARCH, modified starches such as aluminum starch octenyl-succinate (DRY FLO), tetrafluoroethylene polymer powders, metal soaps derived from organic carboxylic acids having from 8 to 22 carbon atoms, preferably from 12 to 18 carbon atoms, for example, zinc, magnesium or lithium stearate, zinc laurate, magnesium myristate, Polypore® L 200 (Chemdal Corporation), silicone resin microbeads (Toshiba's Tospearl®, for example), spherical organopolysiloxane elastomer powders with INCI name: DIMETHICONE / VINYL DIMETHICONE CROSSPOLYMER (DOWSIL TREFIL E-506 S SILICONE POWDER®, DOWSIL 9506 POWDER® from DOW CORNING CHEMICAL), polyurethane powders, in particular, crosslinked polyurethane powders comprising a copolymer, said copolymer comprising trimethylol hexyllactone, such as the hexamethylene diisocyanate / trimethylol hexyllactone polymer, marketed under the name PLASTIC POWDER D-400® or PLASTIC POWDER D-800® by the company TOSHIKI, Carnauba microwaxes, such as that marketed under the name MicroCare 350® by the company MICRO POWDERS, synthetic wax microwaxes, such as that marketed under the name MicroEase 114S® by the company MICRO POWDERS, microwaxes consisting of a mixture of Carnauba wax and polyethylene wax, such as those marketed under the names Micro Care 300® and 310® by the company MICRO POWDERS, microwaxes consisting of a mixture of Carnauba wax and synthetic wax, such as that marketed under the name Micro Care 325® by the company MICRO POWDERS, polyethylene microwaxes, such as those marketed under the names Micropoly 200®, 220®,220L® and 250S® by the company MICRO POWDERS; fibers of synthetic or natural, mineral or organic origin. They can be short or long, single or organized, for example braided, hollow or solid. Their shape can be of any shape and in particular of circular or polygonal section (square, hexagonal or octagonal) depending on the specific application envisaged. In particular, their ends are blunt and / or polished to avoid injury, the fibers have a length ranging from 1 μm to 10 mm, preferably from 0.1 mm to 5 mm and better still from 0.3 mm to 3 mm. Their section can be included in a circle with a diameter ranging from 2 nm to 500 μm, preferably ranging from 100 nm to 100 μm and better still from 1 μm to 50 μm; and mixtures thereof. Particulate coloring matter

[0107] According to a preferred form, the dispersion (A) comprises at least one particulate coloring material.

[0108] The particulate coloring matter(s) according to the invention is (are) preferably chosen from pigments, nacres, reflective particles and mixtures thereof.

[0109] A composition according to the invention may comprise a content of particulate coloring matter(s) preferably ranging from 40 to 90% by weight, and preferentially ranging from 50 to 80% by weight relative to the total weight of the composition. Pigments

[0110] By "pigments" we mean particles of any shape, white or colored, mineral or organic, insoluble in the physiological medium,

[0111] The pigments can be white or colored, mineral and / or organic.

[0112] Among the mineral pigments, we can cite titanium dioxides, oxides zirconium or cerium, as well as zinc oxides, iron oxides (black, yellow or red), chromium oxides, manganese violet, blue, pink or ultramarine violet, chromium hydrate and ferric blue, bismuth oxychloride, metal powders such as aluminum powder, copper powder.

[0113] According to a particular form of the invention, the mineral pigment comprises at least one lipophilic or hydrophobic coating.

[0114] According to a particular embodiment of the invention, the pigments may be coated according to the invention with at least one compound chosen from metallic soaps; N-acylated amino acids or their salts; lecithin and its derivatives; isopropyl trisostearyl titanate; isostearyl sebacate; natural vegetable or animal waxes; polar synthetic waxes; fatty esters; phospholipids; silicone surface agents such as organopolysiloxanes, alkylalkoxysilanes such as triethoxycaprylylsilane; fluorinated surfactants such as perfluoroalkyl phosphates, perfluoropolyethers, polytetrafluoropolyethylenes (PTFE), perfluoroalkanes, perfluoroalkyl silazanes, polyhexafluoropropylene oxides, polyorganosiloxanes comprising perfluoroalkyl perfluoropolyether groups;fluorosilicone surfactants such as perfluoroalkyl dimethicones, perfluoroalkyl silanes and perfluoroalkyl trial-koxysilanes; and mixtures thereof.

[0115] According to a particular embodiment, the pigments may be coated according to the invention with an N-acylated amino acid or one of its salts which may comprise an acyl group having from 8 to 22 carbon atoms, such as for example a 2-ethyl hexanoyl, caproyl, lauroyl, myristoyl, palmitoyl, stearoyl, cocoyl group.

[0116] The amino acid may be, for example, lysine, glutamic acid or alanine. The salts of these compounds may be aluminum, magnesium, calcium, zirconium, zinc, sodium or potassium salts. Thus, according to a particularly preferred embodiment, the pigments may be coated with an N-acylated amino acid derivative which may in particular be a glutamic acid derivative and / or one of its salts, and more particularly a stearoyl glutamate, such as, for example, aluminum stearoyl glutamate. Examples of pigments treated with aluminum stearoyl glutamate include titanium dioxide pigments and black, red and yellow iron oxide pigments sold under the commercial reference NAI® by the company MIYOSHI KASEI.

[0117] According to a particular embodiment, the pigments may be coated according to the invention with isopropyl triisostearyl titanate. Examples of pigments treated with isopropyl titanium triisostearate (ITT) include those sold under the commercial reference BWB0-I2® (Iron Oxide CI77499 and Isopropyl Titanium triisostearate), BWY0-I2® (Iron Oxide CI77492 and Isopropyl Titanium Triisostearate) and BWRO-12® (Iron Oxide CI77491 and Isopropyl Titanium Triisostearate) by the company KOBO.

[0118] The organic pigments can be chosen from the materials below and their mixtures: - cochineal carmine - organic pigments of azo, anthraquinone, indigoid, xanthenic, pyrenic, quinolinic, triphenylmethane, fluorane dyes.

[0119] Among the organic pigments, mention may in particular be made of the D&C certified pigments known under the following names: D&C Blue No. 4, D&C Brown No. 1, D&C Green No. 5, D&C Green No. 6, D&C Orange No. 4, D&C Orange No. 5, D&C Orange No. 10, D&C Orange No. 11, D&C Red No. 6, D&C Red No. 7, D&C Red No. 17, D&C Red No. 21, D&C Red No. 22, D&C Red No. 27, D&C Red No. 28, D&C Red No. 30, D&C Red No. 31, D&C Red No. 33, D&C Red No. 34, D&C Red No. 36, D&C Violet No. 2, D&C Yellow No. 7, D&C Yellow No. 8, D&C Yellow No. 10, D&C Yellow No. 11, FD&C Blue No. 1, FD&C Green No. 3, FD&C Red No. 40, FD&C Yellow No. 5, FD&C Yellow No. 6.

[0120] The chemical materials corresponding to each of the organic coloring materials cited above are mentioned in the work “International Cosmetic Ingredient Dictionary and Handbook”, 1997 Edition, pages 371 to 386 and 524 to 528, published by “The Cosmetic, Toiletry, and Fragrance Association”.

[0121] More particularly, the pigments will be chosen from titanium dioxides, iron oxides (black, yellow or red), and their mixtures; said pigments optionally comprising at least one lipophilic or hydrophobic coating. Mother-of-pearl

[0122] By “mother-of-pearl” we mean colored particles of any shape, iridescent or not, notably produced by certain molluscs in their shell or synthesized and which present a color effect by optical interference.

[0123] Examples of nacres include nacreous pigments such as titanium mica coated with iron oxide, mica coated with bismuth oxychloride, titanium mica coated with chromium oxide, and nacreous pigments based on bismuth oxychloride. They may also be mica particles on the surface of which at least two successive layers of metal oxides and / or organic coloring materials are superimposed.

[0124] The mother-of-pearls can more particularly have a yellow, pink, red, bronze, orange, brown, green, blue, purple and / or coppery color or reflection.

[0125] As an illustration of the mother-of-pearls that can be introduced into the composition, mention may be made of gold-colored mother-of-pearls marketed in particular by the company ENGELHARD under the name Brillant Gold 212G® (Timica), Gold 222C® (Cloisonne), Sparkle Gold® (Timica), Gold 4504® (Chromalite) and Monarch Gold 233X® (Cloisonne); bronze mother-of-pearls marketed in particular by the company MERCK under the name Bronze Fine® (17384) (Colorona) and Bronze® (17353) (Colorona) and by the company ENGELHARD under the name Super Bronze® (Cloisonne); orange mother-of-pearls marketed in particular by the company ENGELHARD under the name Orange 363C® (Cloisonne) and Orange MCR 101® (Cosmica) and by the company MERCK under the name Passion Orange® (Colorona) and Matte Orange® (17449) (Microna); brown mother-of-pearls marketed in particular by the company ENGELHARD under the name Nu-antique Copper 340XB® (Cloisonne) and Brown CL4509® (Chromalite); copper-tinted mother-of-pearls marketed in particular by the company ENGELHARD under the name Copper 340A® (Timica); red-tinted mother-of-pearls marketed in particular by the company MERCK under the name Sienna Fine® (17386) (Colorona); yellow-tinted mother-of-pearl, notably marketed by the company ENGELHARD under the name Yellow® (4502) (Chromalite);red mother-of-pearl with a gold sheen, notably marketed by ENGELHARD under the name Sunstone G012® (Gemtone); pink mother-of-pearl, notably marketed by ENGELHARD under the name Tan opale G005® (Gemtone); black mother-of-pearl with a gold sheen, notably marketed by ENGELHARD under the name Nu Antique Bronze 240 AB® (Timica), blue mother-of-pearl, notably marketed by MERCK under the name Matte Blue® (17433) (Microna), white mother-of-pearl with a silver sheen, notably marketed by MERCK under the name Xirona Silver® and orange-pinkish-green-gold mother-of-pearl, notably marketed by MERCK under the name Indian Summer® (Xirona) and their mixtures.

[0126] Still as an example of nacres, we can also cite particles comprising a borosilicate substrate coated with titanium oxide.

[0127] Particles with a glass substrate coated with titanium oxide are sold in particular under the name METASHINE MC1080RY® by the company TOYAL.

[0128] Finally, as examples of mother-of-pearl, we can also cite polyethylene terephthalate flakes, in particular those marketed by the company Meadowbrook Inventions under the name Silver IP 0.004X0.004® (silver flakes). Reflective particles

[0129] The term “reflective particles” means particles whose size, structure, in particular the thickness of the layer(s) constituting it and their physical and chemical nature, and surface condition, enable them to reflect incident light. This reflection may, where appropriate, have sufficient intensity to create on the surface of the composition or mixture, when the latter is applied to the support to be made up, highlights visible to the naked eye, that is to say brighter points which contrast with their environment by appearing to shine.

[0130] The reflective particles may be selected so as not to alter significantly the coloring effect generated by the coloring agents associated with them and more particularly in such a way as to optimize this effect in terms of color rendering. They may more particularly have a yellow, pink, red, bronze, orange, brown, gold and / or copper color or reflection.

[0131] These particles can have various shapes, in particular being platelet-shaped or globular, in particular spherical.

[0132] The reflective particles, whatever their shape, may have a multi-layer structure or not and, in the case of a multi-layer structure, for example at least one layer of uniform thickness, in particular of a reflective material.

[0133] When the reflective particles do not have a multilayer structure, they may be composed, for example, of metal oxides, in particular titanium or iron oxides obtained by synthesis.

[0134] When the reflective particles have a multi-layer structure, they may for example comprise a natural or synthetic substrate, in particular a synthetic substrate at least partially coated with at least one layer of a reflective material, in particular at least one metal or metallic material. The substrate may be single-material, multi-material, organic and / or inorganic.

[0135] More particularly, it can be chosen from glasses, ceramics, graphite, metal oxides, aluminas, silicas, silicates, in particular aluminosilicates and borosilicates, synthetic mica and their mixtures, this list not being limiting.

[0136] The reflective material may comprise a layer of metal or a metallic material.

[0137] Reflective particles are described in particular in documents JP-A-09188830, JP-A-10158450, JP-A-10158541, JP-A-07258460 and JP-A-05017710.

[0138] Still as an example of reflective particles comprising a mineral substrate coated with a layer of metal, mention may also be made of particles comprising a borosilicate substrate coated with silver.

[0139] Platelet-shaped particles with a silver-coated glass substrate are sold under the name MICROGLASS METASHINE REFSX 2025 PS® by the company TOYAL. Particles with a nickel / chromium / molybdenum alloy-coated glass substrate are sold under the name CRYSTAL STAR GF 550®, GF 2525® by the same company.

[0140] It is also possible to use particles comprising a metallic substrate such as silver, aluminum, iron, chromium, nickel, molybdenum, gold, copper, zinc, tin, magnesium, steel, bronze, titanium, said substrate being coated with at least one layer of at least one metallic oxide such as titanium oxide, aluminum oxide, iron oxide, cerium oxide, chromium oxide, oxides of silicon and their mixtures.

[0141] Examples include aluminum, bronze or copper powders coated with SiO2 marketed under the name VISIONAIRE® by the company ECKART.

[0142] More particularly, the particulate coloring matter(s) will be chosen from pigments, and more particularly from titanium dioxides, iron oxides (black, yellow or red), and mixtures thereof, and more particularly, said pigments optionally comprising at least one lipophilic or hydrophobic coating agent.

[0143] According to a particular form of the invention, the particulate coloring matter(s) is (are) chosen from - titanium dioxides (CI: 77891), preferably hydrophobically coated, and more particularly by sodium lauroyl glutamate and lysine such as the commercial product ASL-1 TIO2 CR-50® by the company DAITO KASEI KOGYO with INCI name; CI 77891 (and) ALUMINUM HYDROXIDE (and) SODIUM LAUROYL GLUTAMATE (and) LYSINE (and) MAGNESIUM CHLORIDE; - yellow iron oxides (CI: 77492), preferably hydrophobically coated, and more particularly by sodium lauroyl glutamate and lysine such as the commercial product ASL-1 YELLOW LL-100P ® by the company DAITO KASEI KOGYO with INCI name; CI 77492 (and) ALUMINUM HYDROXIDE (and) SODIUM LAUROYL GLUTAMATE (and) LYSINE (and) MAGNESIUM CHLORIDE; - red iron oxides (CI: 77491), preferably hydrophobically coated, and more particularly by sodium lauroyl glutamate and lysine such as the commercial product ASL-2 RED R-516P ® by the company DAITO KASEI KOGYO with INCI name; CI 77491 (and) ALUMINUM HYDROXIDE (and) SODIUM LAUROYL GLUTAMATE (and) LYSINE (and) MAGNESIUM CHLORIDE; - black iron oxides (CI: 77499), preferably hydrophobically coated, and more particularly by sodium lauroyl glutamate and lysine such as the commercial product ASL-1 BLACK BL-100P ® by the company DAITO KASEI KOGYO with INCI name: CI 77499 (and) ALUMINUM HYDROXIDE (and) SODIUM LAUROYL GLUTAMATE (and) LYSINE (and) MAGNESIUM CHLORIDE; - their mixtures.

[0144] Process for manufacturing the anhydrous dispersion (A) of particulate material(s)

[0145] Another subject of the invention relates to a process for manufacturing a dispersion anhydrous (A) of particulate matter(s) as defined above, comprising at least one step of grinding said polyol(s), said polymeric dispersing agent and said particulate matter(s).

[0146] The particulate material(s), the polymeric dispersing agent and the polyol(s) are mixed, in proportions in accordance with the invention, and then are crushed by a mill for liquid particle dispersion, such as a three-roll mill model Exakt 50i®.

[0147] Composition (B) for care and / or makeup of keratin materials

[0148] Another subject of the invention also relates to a composition (B) for caring for and / or making up keratin materials as defined above, comprising, in particular in a physiologically acceptable medium: (a) at least one aqueous phase; and b) an anhydrous dispersion (A) as defined previously obtained by at least one step of grinding the particulate material(s), the polymeric dispersing agent and the polyol(s).

[0149] The care and / or makeup compositions (B) according to the invention can be chosen from gels, creams, milks, lotions.

[0150] The care and / or makeup compositions (B) according to the invention may be liquid or solid such as hot-cast products.

[0151] The care and / or makeup compositions (B) according to the invention may be chosen from multi-phase compositions such as emulsions such as oil-in-water emulsions, water-in-oil emulsions, multiple water-in-oil-in-water or oil-in-water-in-oil emulsions, bi- or tri-phasic compositions, in particular bi-phasic gels also called gel / gel such as those described in patents EP2958540B1, EP2958541B1, EP3185958B1.

[0152] . Suitable care and / or makeup compositions (B) according to the invention may contain one or more compounds which are well known to those skilled in the art and generally present in foundations.

[0153] The care and / or makeup compositions (B) according to the invention may additionally comprise additives commonly used in care and / or makeup products such as: - active ingredients such as moisturizers like hydroxyethylurea, vitamins, for example vitamins A, E, C, B3, adenosine, hyaluronic acid and its salts; - ceramides; - UV filters; - water-soluble dyes, fat-soluble dyes; - hydrophilic gelling agents; - lipophilic gelling agents; - perfumes - the conservatives - and their mixtures.

[0154] Such compositions are in particular prepared according to the general knowledge of those skilled in the art.

[0155] According to a particular embodiment, the composition (B) according to the invention is a skin care product, in particular a sun product, a product for oily skin, a product for dry skin, an anti-aging product.

[0156] According to a particular embodiment, the composition (B) according to the invention is a facial makeup product such as a foundation; a lip makeup product such as lipsticks; a product for makeup of the eyelashes or eyebrows such as mascaras, eyeliners.

[0157] Obviously, a person skilled in the art will adapt the nature of the compounds of the composition using his general common knowledge to prepare a composition (B) which can be used in the context of the invention.

[0158] For high viscosity compositions (BH), such as thick creams, the viscosity, measured at 25°C and under atmospheric pressure, is greater than or equal to 4.5 Pa.s at a shear rate of 200 s 1 and less than or equal to 50 Pa.s (using a Brookfield Rheomat RM 180® viscometer equipped with a No. 4 spindle, the measurement being carried out after 10 minutes of rotation of the spindle in order to stabilize the rotation rate and the viscosity).

[0159] For the more fluid compositions (B), the viscosity may be less than 4.5 Pa.s, for example between 1 mPa.s (or leps) and 4.5 Pa.s at a rate at a shear rate of 200 s 1 (using a Brookfield Rheomat RM 180® viscometer equipped with a No. 4 spindle, the measurement being carried out after 10 minutes of rotation of the spindle in order to stabilize the rotation speed and the viscosity). Together

[0160] According to another aspect, the invention also relates to a cosmetic assembly comprising: (i) a container delimiting one or more compartments (d), said container being closed by a closing element; and ii) a makeup and / or care composition (B) in accordance with the invention placed inside said compartment(s).

[0161] The container may for example be in the form of a pot or a box.

[0162] The closure element may be in the form of a lid or a tear-off seal. In particular, this closure element may comprise a cap mounted to be movable by translation or by pivoting relative to the container housing said makeup and / or care composition(s).

[0163] It is understood that in the context of the present invention the weight percentages given for a compound or a family of compounds are always expressed by weight relative to the total weight of the composition.

[0164] Throughout the application, the expression “comprises a” or “includes a” must be understood as meaning “comprises at least one” or “comprising at least one ", unless otherwise specified.

[0165] It is understood that the following examples are provided for illustrative purposes and are in no way limiting of the scope of the protection conferred by the present application. Examples

[0166] The following pigment dispersions (Al) (invention) and (A2) (outside the invention) were produced according to the following procedure.

[0167] [Tables 1] Ingredients Dispersion (Al) (invention) Dispersion (A2) (excluding invention) CI 77891 (and) ALUMINUM HYDROXIDE (and) SODIUM LAUROYL GLUTAMATE (and) LYSINE (and) MAGNESIUM CHLORIDE (ASL-1 TIO2 CR-50® - DAITO KASEI KOGYO) 75% 75% SODIUM METHACRYLATE / PEG / PPG-45 / 15 HYDROXYPROPYL METHACRYLATE COPOLYMER 0.4% MA PEG-9 DIMETHICONE (KF-6013 ® - SHIN ETSU) 0.4% 1.3 BUTYLENE GLYCOL 24% 24% WATER 0.6% Protocol for the preparation of pigment dispersions Al and A2:

[0168] The ingredients were pre-mixed with a spatula, then the mixture was ground using a three-cylinder grinder model Exakt 50i®.

[0169] The pigment preparations (Al) and (A2) were then characterized in rheology to measure the consistency value G*, and the quality of the composition (Bl) or (B2) obtained by introducing into the water respectively the dispersion Al or the dispersion (A2) is evaluated. The results are shown in Table 2.

[0170] [Tables2] Characterizations Composition (Bl) obtained with dispersion 1 according to the invention Composition (B2) obtained with dispersion 2 outside the invention Consistency G* (Pa) Measurement 1 1.7 x 104 Pa 2.7 x 106 Pa Measurement 2 1.3 x 104 Pa 1.7 x 106 Pa Average of the two measurements 1.5 x 104Pa 2.2 x 106 Pa Dispersion in water and observation under a microscope Homogeneous dispersion Heterogeneous dispersion Rheology protocol:

[0171] Rheological measurements were carried out in an imposed stress rheometer (RheoStress 600®, Haake). Shear stress and velocity gradient measurements were carried out using a flat sensor and a measuring plane (PP35 S; 35 mm diameter, sandblasted), with an air gap of 0.500 mm.

[0172] The air gap temperature is set at 25°C. A 180-second isotherm at this temperature is applied before each measurement. An ascending oscillation curve with an amplitude sweep is imposed with a stress ramp ranging from 1 to 103 Pa, with a frequency set at 1 Hz with 20 steps.

[0173] Protocol for studying the quality of dispersion in water:

[0174] A spatula tip of each particulate dispersion (A1) or (A2) is dispersed in water. The dispersion quality of the composition (B1) or (B2) obtained was then observed under a microscope.

[0175] A lower complex modulus G* shows a more fluid consistency.

[0176] The anhydrous pigmentary dispersion (Al) according to the invention made it possible to obtain an aqueous composition (Bl) of more fluid consistency and having a better quality of dispersion in aqueous phase, compared to the aqueous composition (B2) outside the invention which uses the aqueous pigmentary dispersion (A2) with the surfactant PEG-9 Dimethicone.

[0177] Furthermore, the composition (Bl) according to the invention did not sediment over time after two months at room temperature.

Claims

Claims

1. Anhydrous dispersion (A) of particulate material(s), comprising, in particular in a physiologically acceptable medium: a) at least one polyol and; b) at least one polymeric dispersing agent soluble in said polyol; and c) at least one particulate material.

2. Dispersion according to claim 1, comprising at least 1,3-butylene glycol, and preferably a mixture of glycerin and 1,3-butylene glycol, more preferably with a mass ratio between 1,3-butylene glycol and glycerin ranging from 1 to 5, more particularly ranging from 2 to 4.

3. Dispersion according to claim 1 or 2, where the polyol(s) is (are) present, preferably at a content ranging from 10 to 60% by weight, and more preferably from 20 to 50% by weight relative to the total weight of the composition.

4. Dispersion according to any one of the preceding claims, wherein the polymeric dispersing agent is a dispersing polymer comprising a main chain and at least one side chain grafted onto the main chain, said main chain being derived from at least one monomer comprising at least one α,[3-monoethylenic unsaturation and at least one function chosen from the group consisting of the functions: carboxylic acid, carboxylic acid ester, carboxylic acid salt and mixtures thereof; said side chain comprising at least one linear or branched C2-C8 alkyleneoxy radical or a mixture of alkyleneoxy radicals; said side chain being optionally substituted by a linear or branched alkyl chain comprising from 1 to 6 carbon atoms.

5. Dispersion according to claim 4, in which the main chain of the polymeric dispersing agent is derived from at least one monomer chosen from (meth)acrylic acids, their esters, their salts and mixtures thereof.

6. A dispersion according to claim 4 or 5, wherein the main chain of the polymeric dispersing agent is derived from a methacrylic acid salt.

7. A dispersion according to any one of claims 4 to 6, wherein the polymeric dispersing agent comprises at least one chain unsubstituted side.

8. A dispersion according to any one of claims 4 to 7, wherein the polymeric dispersing agent comprises at least one side chain substituted with a methyl or ethyl chain.

9. A dispersion according to any one of claims 4 to 8, wherein the polymeric dispersing agent comprises at least one side chain consisting of ethyleneoxy, propyleneoxy radicals or mixtures thereof.

10. A dispersion according to any one of claims 4 to 9, wherein the side chains of the polymeric dispersing agent are randomly or statistically distributed.

11. A dispersion according to any one of claims 4 to 10, wherein the polymeric dispersing agent is a comb copolymer comprising a polymethacrylic acid main chain grafted with polyethylene oxide and / or polypropylene oxide side chains.

12. A dispersion according to any one of claims 4 to 11, wherein the polymeric dispersing agent has the following formula: r; * CHn C * L " | Jn R, in which: n is an integer ranging from 50 to 4,000; i is an integer ranging from 1 to n; the groups R';, which may be identical or different, represent, independently of one another, H or a linear or branched alkyl group comprising from 1 to 10 carbon atoms; and the groups R;, which may be identical or different, are chosen, independently of one another, from the group consisting of: -C(=O)OH, -C(=O)O-X+ and -C(=O)O-(A)p-Ra, at least one of the groups Ri representing -C(=O)O-(A)p-Ra, where: X is an alkali or alkaline-earth metal; or X+ represents a quaternary ammonium; Ra represents H or a linear or branched alkyl group comprising from 1 to 6 carbon atoms; A represents a linear or branched alkyleneoxy radical, in C2-C8 or their mixture; and

13. p is an integer ranging from 1 to 200. A dispersion according to any one of claims 4 to 12, wherein the polymeric dispersing agent comprises at least one repeating unit (Ti) and at least one repeating unit (T2), said repeating units having the following respective formulas: in which: p is an integer ranging from 1 to 200; X is an alkali or alkaline earth metal; or X+ represents a quaternary ammonium; Ra represents H or an alkyl group, linear or branched, comprising from 1 to 6 carbon atoms; R and R', identical or different, represent, independently of one another, H or a linear or branched alkyl group comprising from 1 to 10 carbon atoms; and A represents a linear or branched C2-C8 alkyleneoxy radical or their mixture.

14. A dispersion according to any one of claims 4 to 13, wherein the polymeric dispersing agent has the following formula: in which:

15. R'a is H or CH3; x is an integer ranging from 50 to 3000; y is an integer ranging from 5 to 1000; and p is an integer ranging from 20 to 200, the -CH2-C(R)(C(=O)ONa)- and -CH2-C(R')(C(=O)O-(CH2-CH2 -O)pR'a)- motifs being distributed randomly or statistically. Cosmetic composition according to any one of claims 4 to 14, in which the polymeric dispersing agent corresponds to the following formula:

16.

17.

18.

19. in which: x is an integer ranging from 50 to 3000; y is an integer from 5 to 1000; and p is an integer from 20 to 200; the -CH2-C(R)(C(=O)ONa)- and -CH2-C(R')(C(=O)O-(CH2-CH2 -O)PCH3)- motifs being distributed randomly or statistically. A dispersion according to any one of claims 4 to 15, wherein the weight average molecular weight (Mw) of the polymeric dispersing agent is from 50,000 to 90,000 g / mol. Dispersion according to any one of claims 1 to 16, in which the polymeric dispersing agent has the INCI name Sodium Me-thacrylate / PEG / PPG-45 / 15 Hydroxypropyl Methacrylate Copolymer. Dispersion according to any one of the preceding claims, comprising a total content of polymeric dispersing agent(s) greater than or equal to 0.1% by weight, preferably greater than or equal to 0.5% by weight, even more preferably in a content ranging from 0.2% to 5% by weight relative to the total weight of the composition, in particular in a content ranging from 0.5% to 3% by weight relative to the total weight of the composition. A dispersion according to any preceding claim, wherein the particulate matter is selected from fillers, particulate coloring materials, and mixtures thereof.

20. Dispersion according to any one of the preceding claims, comprising at least one particulate coloring material, preferably chosen from pigments, nacres, reflective particles and mixtures thereof.

21. Dispersion according to claim 20, comprising a content of particulate coloring matter(s) preferably ranging from 40 to 90% by weight, and preferably ranging from 50 to 80% by weight relative to the total weight of the composition.

22. Dispersion according to claim 20 or 21, the particulate coloring matter(s) is (are) chosen from - titanium dioxides (CI: 77891), preferably hydrophobically coated, and more particularly by sodium lauroyl glutamate and lysine; - yellow iron oxides (CI: 77492), preferably hydrophobically coated, and more particularly by sodium lauroyl glutamate and lysine; - red iron oxides (CI: 77491), preferably hydrophobically coated, and more particularly by sodium lauroyl glutamate and lysine; - black iron oxides (CI: 77499), preferably hydrophobically coated, and more particularly by sodium lauroyl glutamate and lysine; - mixtures thereof.

23. A process for manufacturing an anhydrous dispersion (A) of particulate material(s) as defined in any one of the preceding claims, comprising at least one step of grinding said polymeric dispersing agent, said polyol(s) and said particulate material(s).

24. Dispersion (A) of particulate matter(s) obtainable by the process according to claim 23.

25. Composition (B) for caring for and / or making up keratin materials, comprising, in particular in a physiologically acceptable medium: a) at least one aqueous phase; and b) an anhydrous dispersion (A) as defined in any one of claims 1 to 24.

26. Cosmetic assembly comprising: i) a container delimiting one or more compartments(d), said container being closed by a closing element; and ii) a composition (B) according to claim 25 arranged inside said compartment(s).

27. Process for coating keratin materials, more particularly for caring for and / or making up keratin materials, such as the skin, characterized in that it comprises the application to the keratin materials of the composition (B) according to claim 25.