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

Abstract

The present invention relates to an anhydrous dispersion of particulate matter (A) comprising, in particular in a physiologically acceptable medium: a) at least one polyol; and b) at least one polymeric dispersant soluble in said polyol; and c) at least one particulate matter. The present 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 of particulate matter (A) obtained by at least one step of grinding said polyol, said polymeric dispersant and said particulate matter.

Description

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

[0002] Cosmetic compositions, such as foundation, are often used to give skin a beautiful color and also to improve the appearance of uneven skin by making it easier to conceal scars and dyschromias, reduce the visibility of imperfections such as pores and wrinkles, and cover blemishes and acne scars. In this regard, coverage, color, and achieving a natural makeup look are the main desired characteristics.

[0003] Cosmetic compositions routinely utilize particulate phases, particularly in cosmetics, to provide color through the use of pigments, especially inorganic pigments such as titanium dioxide and iron oxide. It is known that particles (such as pigments) can be used in the form of dispersions (where the particles are dispersed in a dispersion medium) to promote good color development. This is specifically disclosed in patent JP 2012-097259 A.

[0004] Techniques have also been developed for providing particulate phases (such as pigments) that have undergone surface treatment to make them more waterproof, sweatproof, and rainproof. This is specifically disclosed in patents WO 2013 / 018827, WO 2015 / 125622, and JP2016-74660 A.

[0005] However, improvements are still needed to enhance the quality of the particulate dispersion and the stability of both the particulate dispersion and the cosmetic composition incorporating the particulate dispersion.

[0006] Dispersions of particles in an aqueous phase exist, such as those described in patents JP 2012-097259 A, WO 2013 / 018827, WO2015 / 125622, and JP 2016-74660 A, which disclose dispersions of particles in water. However, there is still room for improvement to further enhance the stability of the particle dispersion in order to provide a stable liquid dispersion. Additionally, the presence of water as a volatile compound necessitates the use of sealed containers during storage. This constitutes a limitation and a cost.

[0007] There are also particulate formulations, such as those described in patent EP 3466399 B1, which discloses anhydrous dispersions of particles that have been made hydrophobic and dispersible in an aqueous phase. However, these particulate formulations use nonionic surfactants as dispersants; to obtain the fluid consistency and good dispersion quality of the particulate formulation in the aqueous phase, a significant amount of the dispersant is required. Therefore, there is room for improvement in using the dispersant at a lower proportion, particularly to reduce the risk of water sensitivity after the particulate formulation is introduced into a cosmetic composition in the aqueous phase, while still achieving the fluid consistency and good dispersion quality of the particulate formulation in the aqueous phase.

[0008] Furthermore, the use of nonionic surfactants as dispersants in emulsions may interfere with the surfactant system of the emulsion and thus compromise its stability. Therefore, there is still room for improvement in order to use the dispersant in the smallest possible amount so that the stability of the emulsion is not compromised when the dispersant is introduced into the emulsion.

[0009] FR 2996131B1, FR 2996132B1, FR 2996134 B1 and patent applications WO 2014053576, WO2023285365, FR 3124933, WO 2023 / 285363 and FR 3124932 disclose compositions for treating and / or cosmeticating keratin materials, these compositions having a dispersion polymer comprising a main chain and at least one side chain grafted to the main chain;

[0010] The main chain is derived from at least one monomer, which contains at least one α,β-monoene bond unsaturation and at least one functional group selected from the group consisting of: carboxylic acids, carboxylic esters, carboxylate salts and mixtures thereof.

[0011] The side chain comprises at least one straight-chain or branched C2-C8 alkylene oxide group or a mixture of alkylene oxide groups; the side chain may optionally be substituted with a straight-chain or branched alkyl chain comprising 1 to 6 carbon atoms.

[0012] Furthermore, it is desirable to provide a particulate formulation in the form of a liquid dispersion, as this would simplify its dispersion in the dispersion medium. However, particulate formulations, especially inorganic pigments, tend to deposit in the dispersion medium, unfortunately resulting in poor dispersion stability and the potential for sedimentation and phase separation (such as color separation). Therefore, it is difficult to provide stable particulate formulations of particles, especially inorganic particles. Thus, it is desirable to obtain a particulate formulation that does not deposit over time.

[0013] The applicant has unexpectedly discovered that this objective is achieved using an anhydrous dispersion (A) of a particulate matter, which is specifically contained in a physiologically acceptable medium:

[0014] a) at least one polyol; and

[0015] b) At least one polymer dispersant soluble in the polyol; and

[0016] c) At least one particulate matter.

[0017] This discovery forms the basis of this invention. Summary of the Invention

[0018] Therefore, the present invention relates to an anhydrous dispersion (A) of particulate matter, which is particularly contained in a physiologically acceptable medium:

[0019] a) at least one polyol; and

[0020] b) At least one polymer dispersant soluble in the polyol; and

[0021] c) At least one particulate matter.

[0022] Another subject of the present invention relates to a method for producing an anhydrous dispersion (A) of a particulate matter as defined above, the method comprising at least one step of milling the polyol, the polymer dispersant and the particulate matter.

[0023] Another subject of the present invention relates to a dispersion (A) that can be obtained by the said production method.

[0024] Another subject of the invention relates to a composition (B) for treating and / or cosmetically applying keratin materials, which particularly comprises, in a physiologically acceptable medium:

[0025] a) At least one aqueous phase;

[0026] b) An anhydrous dispersion (A) of the particulate matter as defined above, and the anhydrous dispersion is obtained in particular by at least one step of milling the polyol, the polymer dispersant and the particulate matter.

[0027] The present invention also relates to a method for coating keratin materials, more particularly for caring for and / or cosmetically applying keratin materials such as skin, characterized in that the method comprises applying a composition (B) as defined above to the keratin material.

[0028] definition

[0029] In the context of this invention, the term "keratin material" should be specifically understood to mean the skin (of the body, face, periocular area, or eyelids).

[0030] The term “physiologically acceptable” should be understood to mean that it is compatible with skin and / or its coverings, has a pleasant color, smell and feel, and does not cause any unacceptable discomfort (tingling or tightness) that might discourage a consumer from using the composition.

[0031] For the purposes of this invention, the term "anhydrous" should be understood to mean a composition containing less than 1.0% by weight and more preferably less than 0.5% by weight of water relative to the total weight of the composition, or even a composition containing no water. Where applicable, such a small amount of water may be introduced, particularly by compositional components that may contain residual water.

[0032] The term "particulate matter" should be understood to mean any shape of solid particles provided in an insoluble form and dispersed in the medium of the composition.

[0033] polyols

[0034] The composition according to the invention comprises a) at least one polyol.

[0035] For the purposes of this invention, the term "polyol" should be understood to mean any organic molecule containing at least two free hydroxyl groups.

[0036] The polyols according to the invention exist in liquid form at ambient temperature (20°C-25°C) and atmospheric pressure (760 mmHg).

[0037] The polyols applicable to this invention can be straight-chain, branched, or cyclic, saturated or unsaturated alkyl compounds, with at least two -OH functional groups, particularly at least three -OH functional groups, and more particularly at least four -OH functional groups on the alkyl chain.

[0038] Polyols advantageously suited for formulating compositions according to the invention are those having from 2 to 32 carbon atoms and preferably from 3 to 16 carbon atoms.

[0039] Advantageously, the polyol may be selected from, for example, ethylene glycol, pentaerythritol, trimethylolpropane, propylene glycol, 1,2-propanediol, 1,3-propanediol, 1,3-butanediol, isopentylene glycol, pentylene glycol, hexanediol, glycerol, polyglycerol (such as glycerol oligomers, such as diglycerol), and polyethylene glycol, and mixtures thereof.

[0040] According to a preferred embodiment of the present invention, the composition of the present invention comprises at least 1,3-butanediol.

[0041] According to another preferred embodiment of the invention, the composition according to the invention comprises a mixture of glycerol and 1,3-butanediol, preferably wherein the mass ratio of 1,3-butanediol to glycerol ranges from 1 to 5, more preferably from 2 to 4.

[0042] The polyol is preferably present in a content ranging from 10% to 60% by weight relative to the total weight of the composition, and more preferably from 20% to 50% by weight.

[0043] polymer dispersants

[0044] The composition according to the invention comprises a) at least one polyol and b) at least one polymeric dispersant soluble in said polyol.

[0045] The term "polymer dispersant" should be understood to mean any polymer used in the compositions according to the invention in order to avoid aggregation or flocculation of dispersed particles.

[0046] The polymeric dispersant according to the invention is preferably a solid at ambient temperature (25°C) and atmospheric pressure.

[0047] Preferably, the polymeric dispersant comprises a main chain and at least one side chain grafted onto the main chain, the main chain being derived from at least one monomer, the at least one monomer comprising at least one α,β-monoene bond unsaturation and at least one functional group selected from the group consisting of: carboxylic acids, carboxylic esters, carboxylates and mixtures thereof;

[0048] The side chain comprises at least one straight-chain or branched C2-C8 alkylene oxide group or a mixture of alkylene oxide groups; the side chain may optionally be substituted with a straight-chain or branched alkyl chain comprising 1 to 6 carbon atoms.

[0049] According to a particular embodiment, the dispersion polymer consists of a main chain and several grafted side chains, which are optionally substituted at their ends with alkyl groups containing fewer than 6 carbon atoms.

[0050] In the context of this invention, and unless otherwise mentioned, the term "main chain" encompasses the "backbone chain" or "backbone" of the term polymer. The main chain contains the highest number of carbon atoms, unlike the side chains.

[0051] In the context of this invention, the expression "a chain derived from at least one monomer (...)" means that the chain corresponds to a polymer obtained by polymerization of the monomer.

[0052] Therefore, the dispersion polymer according to the invention is also called a "comb copolymer", with the comb teeth corresponding to the side chains (or dangling chains) formed by the grafting material.

[0053] The main chain of the dispersion polymer according to the invention comprises at least one carboxylic acid functional group or its ester or salt. It may also comprise a mixture of these functional groups, esters and salts.

[0054] Therefore, the main chain can contain dangling functional groups COOH, COOAlk, or COO-X. + Alk, or mixtures thereof, wherein Alk represents an alkyl group containing 1 to 6 carbon atoms, and X represents an alkali metal or alkaline earth metal, or X+ represents a quaternary ammonium.

[0055] The term "alkyl" here refers to a saturated and straight-chain or branched aliphatic hydrocarbon group comprising 1 to 6 carbon atoms (unless otherwise specified). For example, methyl, ethyl, n-propyl, isopropyl, butyl, isobutyl, tert-butyl, or pentyl may be mentioned.

[0056] In the context of this invention, the term "quaternary ammonium" refers specifically to a cation obtained from an amine of the formula NR1R2R3 by alkylation; each of the groups R1, R2, and R3 may be the same or different, representing H or an alkyl group containing 1 to 6 carbon atoms. In particular, quaternary ammonium according to the invention comprises the ammonium cation NH4. + .

[0057] According to a particular embodiment, the dispersion polymer consists of a main chain and several grafted side chains, the ends of which are alkyl groups containing fewer than 6 carbon atoms and are preferably substituted with methyl groups.

[0058] In the context of this invention, the expression "side chain grafted onto the main chain" means that the side chain is connected to the main chain via covalent bonds.

[0059] For example, it can be mentioned that poly(ethylene oxide) and / or poly(propylene oxide) chains are grafted onto the main chain via ester functional groups, which can be generated by the reaction between the carboxylic acid functional groups of the monomers in the main chain and the hydroxyl functional groups of the poly(ethylene oxide) and / or poly(propylene oxide).

[0060] In the context of this invention, the term "alkylene group" should be understood to mean -A'-O- group, where A' represents an alkylene group.

[0061] The term "alkylene radical" is intended to indicate a divalent group derived from an alkyl group as defined above, lacking two hydrogen atoms. The alkylene radical can be straight-chain or branched; therefore, A' can represent a straight-chain or branched alkylene radical, which in particular contains from 2 to 8 carbon atoms. Preferably, the alkylene radical contains 2 or 3 carbon atoms.

[0062] For example, the groups -CH2-CH2-O- (ethyleneoxy), -CH2-CH(CH3)-O-, -CH(CH3)-CH2-O-, or -CH2-CH2-CH2-O- (propyleneoxy) can be mentioned.

[0063] In the context of this invention, the side chains of the dispersed polymer may comprise a mixture of alkylene groups of different sizes. According to this embodiment, the side chains may comprise a mixture of -(A'1-O) and (A'2-O)- groups, where A'1 and A'2 represent different straight-chain or branched alkylene groups. In particular, the side chains may comprise a mixture of ethyleneoxy groups and propyleneoxy groups.

[0064] One or more side chains of the dispersion polymer may be replaced by a straight-chain or branched alkyl chain containing 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms, and preferably 1 to 2 carbon atoms.

[0065] According to one embodiment, the backbone of the dispersion polymer is derived from at least one monomer selected from (meth)acrylic acid, its esters, its salts, and mixtures thereof.

[0066] According to this embodiment, the main chain of the polymer is selected from poly(meth)acrylic acid, poly(meth)acrylate, poly(meth)acrylate salt, and mixtures thereof.

[0067] According to one embodiment, the backbone of the dispersion polymer is derived from methacrylates, particularly sodium methacrylate. According to this embodiment, the backbone of the dispersion polymer is sodium polymethacrylate.

[0068] In addition to the main chain, the dispersed polymer also includes one or more side chains grafted onto the main chain. In other words, the polymer according to the invention consists of a polymer main chain containing a given functional group (carboxylic acid, or its salt or ester), and the side chains are linked via that given functional group.

[0069] Dispersed polymers can be represented as consisting of a given number of repeating units, including: repeating units derived from (meth)acrylic acid, its esters, its salts and mixtures thereof; and grafting units derived from the above compounds, the grafting units comprising a graft chain containing at least one alkylene group as defined above, which is substituted with an alkyl chain as defined above where appropriate.

[0070] According to one embodiment, the dispersion polymer comprises at least one unsubstituted side chain. Preferably, all side chains of the dispersion polymer are unsubstituted. The term "unsubstituted side chain" refers to a side chain as defined, which comprises at least one straight-chain or branched C2-C8 alkyleneoxy group or a mixture of alkyleneoxy groups, and comprises a terminal hydrogen atom.

[0071] According to one embodiment, the dispersion polymer comprises at least one side chain substituted with a methyl or ethyl chain, particularly a methyl chain. Preferably, the side chain of the dispersion polymer is substituted with a methyl chain.

[0072] According to one embodiment, the dispersion polymer comprises at least one side chain consisting of an ethylene oxide group, a propylene oxide group, or a mixture thereof. Preferably, the side chain of the dispersion polymer consists of an ethylene oxide group, a propylene oxide group, or a mixture thereof.

[0073] According to one embodiment, the side chains of the polymer may be distributed randomly, statistically, or in a sequential manner (block or sequential copolymer).

[0074] The dispersion polymer according to the invention can be a block copolymer corresponding to assemblies with blocks having side chains and blocks without side chains.

[0075] Preferably, the side chains of the dispersed polymer are distributed randomly or statistically. Preferably, these side chains are distributed statistically.

[0076] According to one embodiment, the dispersion polymer according to the invention is linear. In particular, the dispersion polymer is not a crosslinked polymer.

[0077] According to a preferred embodiment, the dispersion polymer is a comb copolymer comprising a main chain of polymethacrylic acid (or a salt thereof) branched with poly(ethylene oxy) and / or poly(propylene oxy) side chains.

[0078] According to one embodiment, the side chain comprises 20 to 200, preferably 50 to 150, and more preferably 50 to 100 alkylene oxides.

[0079] According to one embodiment, the side chain contains only ethylene oxide.

[0080] According to one embodiment, the side chain contains only propylene oxide.

[0081] According to one embodiment, the side chain comprises a mixture of ethyleneoxy and propyleneoxy groups, which are randomly or statistically distributed.

[0082] According to one embodiment, the mass-average molecular weight (Mw) of the above-mentioned dispersed 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.

[0083] Preferably, the mass-average molecular weight (Mw) of the above-mentioned dispersed polymer is in the range of 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.

[0084] According to a preferred embodiment, the mass-average molecular weight (Mw) of the above-mentioned dispersion polymer ranges from 20,000 to 300,000 g / mol, preferably from 20,000 to 200,000 g / mol, and more preferably from 30,000 g / mol to 120,000 g / mol. Preferably, the mass-average molecular weight (Mw) of the above-mentioned dispersion polymer ranges from 40,000 to 80,000 g / mol.

[0085] According to a particularly preferred embodiment, the mass-average molecular weight (Mw) of the above-mentioned dispersion polymer ranges from 50,000 to 90,000 g / mol, preferably from 70,000 to 80,000 g / mol. Preferably, the mass-average molecular weight (Mw) of the above-mentioned dispersion polymer is approximately 75,000 g / mol.

[0086] Choosing this appropriate range of molecular weight allows for a good trade-off in two aspects: first, limiting depletion, and second, making efficiency insensitive to concentration.

[0087] According to one embodiment, the dispersion polymer according to the invention comprises at least one unit having the following formula (I):

[0088] [Chemical Formula 1]

[0089] (I)

[0090] in:

[0091] - n is an integer ranging from 50 to 4000, preferably from 60 to 2500;

[0092] - i is an integer ranging from 1 to n;

[0093] - Group R' i They may be the same or different, and independently represent H or a straight-chain or branched alkyl group containing 1 to 10, preferably 1 to 5, and more preferably 1 or 2 carbon atoms; and

[0094] Group R i They can be the same or different, and can be independently selected from the following groups: -C(=O)OH, -C(=O)OX + and -C(=O)O-(A) p-R a , group R i At least one of the following is represented as -C(=O)O-(A)pR a ,in:

[0095] - X is an alkali metal or alkaline earth metal, especially Na or K; or X + Indicates quaternary ammonium;

[0096] - R a The term represents H or a straight-chain or branched alkyl group containing 1 to 6, preferably 1 to 4, and most preferably 1 or 2 carbon atoms;

[0097] - A represents a straight-chain or branched C2-C8 alkylene oxide group or a mixture thereof; and

[0098] - p is an integer ranging from 1 to 200, preferably from 50 to 150.

[0099] Therefore, the dispersed polymer according to the present invention can be composed of repeating n units -CH2-CH(R') i (R) i - Composition, each of these units can be the same or different, depending on the R of each unit. i and R' i The properties, and at least one of these units contains -C(=O)O-(A) corresponding to the grafted side chain. p -R a Group.

[0100] According to one embodiment, the dispersion polymer according to the invention comprises at least one repeating unit (T1) and at least one repeating unit (T2), said repeating unit having the following corresponding formula:

[0101] [Chemical Formula 2]

[0102]

[0103] or

[0104] [Chemical Formula 3]

[0105]

[0106] in:

[0107] p is an integer ranging from 1 to 200, preferably from 50 to 150;

[0108] X is H or an alkali metal or alkaline earth metal, and especially Na or K; or X + Indicates quaternary ammonium;

[0109] R aThe term represents H or a straight-chain or branched alkyl group containing 1 to 6, preferably 1 to 4, and most preferably 1 or 2 carbon atoms;

[0110] R and R' can be the same or different, and independently represent H or a straight-chain or branched alkyl group containing 1 to 10, preferably 1 to 5, and preferably 1 or 2 carbon atoms; and

[0111] A represents a straight-chain or branched C2-C8, preferably C2-C3 alkyleneoxy group or a mixture thereof.

[0112] According to one embodiment, the dispersed polymer consists of x repeating units (T1) and y repeating units (T2), which are randomly or statistically distributed, wherein:

[0113] x is an integer ranging from 50 to 3000, preferably from 60 to 1500; and

[0114] y is an integer ranging from 5 to 1000, preferably from 5 to 600; the sum of x + y corresponds to the number n defined above.

[0115] According to the present invention, repeating units (T1) and (T2) can be randomly alternating in the above polymer.

[0116] According to the present invention, repeating units (T1) and (T2) can be statistically alternating in the above polymer.

[0117] According to the present invention, repeating units (T1) and (T2) may be distributed in the polymer in the form of blocks or sequences.

[0118] According to one embodiment, in the formulas (I), (T1) and (T2) defined above, X represents Na.

[0119] According to one embodiment, in equations (I) and (T2) defined above, each R a It indicates H or methyl.

[0120] According to one embodiment, in equations (I) and (T2) defined above, each R a H represents H.

[0121] According to one embodiment, in equations (I) and (T2) defined above, each R a It indicates methyl.

[0122] According to one embodiment, in the formula (T1) defined above, R is H or methyl.

[0123] According to one embodiment, in formula (I) defined above, group R'i It is H or methyl.

[0124] According to one embodiment, in the formula (T2) defined above, R' is H or methyl.

[0125] According to one embodiment, in formula (T2) defined above, group A corresponds to formula (II) or (III):

[0126] [Chemical Formula 4]

[0127]

[0128] or

[0129] [Chemical Formula 5]

[0130]

[0131] in:

[0132] A1 represents the -CH2CH2O- group;

[0133] A2 represents the -CH2CH(CH3)O- or -CH(CH3)-CH2-O- group;

[0134] j and k can be the same or different, and can represent integers ranging from 0 to 50, preferably from 0 to 25, independently of each other;

[0135] The premise is that the sum of j + k is greater than or equal to 1, and preferably greater than or equal to 50.

[0136] According to one embodiment, the dispersed polymer corresponds to the following formula:

[0137] [Chemical Formula 6]

[0138]

[0139] in:

[0140] R' a It is H or CH3;

[0141] x is an integer ranging from 50 to 3000;

[0142] y is an integer ranging from 5 to 1000; and

[0143] p is an integer ranging from 20 to 200.

[0144] Units -CH2-C(R)(C(=O)ONa)- and -CH2-C(R')(C(=O)O-(CH2-CH2-O) p R' a- Distributed randomly or statistically.

[0145] Preferably, the dispersed polymer corresponds to the following formula:

[0146] [Chemical Formula 7]

[0147]

[0148] Where x, y, and p are as defined above, and the units are -CH2-C(R)(C(=O)ONa)- and -CH2-C(R')(C(=O)O-(CH2-CH2-O) p CH3)- is distributed randomly or statistically, preferably statistically.

[0149] According to one embodiment, the dispersion polymer is a copolymer derived from methacrylic acid and poly(ethylene oxy) methyl ether methacrylate.

[0150] According to another embodiment, the polymer is a copolymer derived from methacrylic acid and poly(propylene oxide) methyl ether methacrylate.

[0151] According to one embodiment, the dispersion polymer is a copolymer derived from methacrylic acid and poly(ethyleneoxy)-(propyleneoxy)methyl ether methacrylate.

[0152] The dispersed polymers according to the invention are described, for example, in document US 6034208, and are obtained by known methods, and particularly by free radical polymerization in solution, in direct or reverse emulsion, in suspension or in a solvent in the presence of an initiating system and a transfer agent, or by controlled free radical polymerization, and preferably by nitride-mediated polymerization (NMP) or cobaloxime-mediated polymerization, by atom transfer radical polymerization (ATRP), or by free radical polymerization mediated by sulfur derivatives selected from urethanes, dithioesters or trithiocarbonates (RAFT) or xanthates.

[0153] The dispersed polymer can be completely or partially neutralized by one or more neutralizing agents having monovalent or polyvalent cations, wherein the agents are preferably selected from ammonia or calcium hydroxide or magnesium hydroxide and / or calcium oxide or magnesium oxide, or sodium hydroxide, potassium hydroxide or lithium hydroxide, or primary, secondary or tertiary aliphatic and / or cyclic amines, such as preferably stearylamine, ethanolamine (monoethanolamine, diethanolamine, triethanolamine), monoethylamine and diethylamine, cyclohexylamine, methylcyclohexylamine, aminomethylpropanol, morpholine, and preferably the neutralizing agent is selected from triethanolamine and sodium hydroxide.

[0154] The dispersed polymer can also be separated into several phases using one or more polar solvents during static or dynamic processes. These one or more polar solvents preferably belong to the group consisting of water, methanol, ethanol, propanol, isopropanol, butanol, acetone, tetrahydrofuran, or mixtures thereof.

[0155] According to a particularly preferred embodiment of the invention, the dispersant is a copolymer of methacrylic acid and POE PPO OH methacrylate (polyether polycarbonate), which is a sodium salt in an aqueous solution.

[0156] Preferably, the dispersion polymer has the INCI name sodium methacrylate / PEG / PPG-45 / 15 hydroxypropyl methacrylate copolymer.

[0157] The composition according to the invention preferably contains a polymer dispersant in a total amount of greater than or equal to 0.1% by weight, preferably greater than or equal to 0.5% by weight, and even more preferably in a range of 0.2% to 5% by weight relative to the total weight of the composition, particularly in a range of 0.5% to 3% by weight relative to the total weight of the composition.

[0158] Particulate matter

[0159] The anhydrous composition according to the invention comprises c) at least one particulate substance.

[0160] The particulate matter is preferably selected from fillers, particulate colorants, and mixtures thereof.

[0161] filler

[0162] The term "filler" should be understood to mean any shape of colorless or white solid particles provided in an insoluble form and dispersed in the medium of the composition. They are inherently mineral or organic, and they enable the composition to impart softness, matte finish, and cosmetic uniformity.

[0163] The fillers used in the compositions of the present invention are selected from mineral fillers, organic fillers, and mixtures thereof.

[0164] The filler used in the compositions of the present invention is preferably present in a content ranging from 40% to 90% by weight, more preferably from 50% to 80% by weight, relative to the total weight of the powdered phase.

[0165] Among the mineral fillers that can be used in the compositions according to the invention are talc; natural mica; synthetic mica such as fluorophlogopite; silica; magnesium silicate and aluminum silicate; kaolin; bentonite; calcium carbonate; magnesium bicarbonate; hydroxyapatite; boron nitride; hollow silica microspheres (silica beads from Maprecos); silica-based fillers, such as Aerosil 200® or Aerosil 300®; Sunsphere H-33® and Sunsphere H-51® sold by Asahi Glass; Chemicelen® sold by Asahi Chemical; composites of silica and titanium dioxide, such as the TSG® series sold by Nippon Sheet Glass; perlite powder; and mixtures thereof.

[0166] Among the organic fillers that can be used in the compositions according to the invention are polyamide powder (Nylon® Orgasol from Atochem); poly-β-alanine and polyethylene powder; polytetrafluoroethylene (Teflon®) powder; lauroyl lysine; starch, such as natural corn starch having the INCI name: ZEA MAYS (corn) starch; modified starch such as aluminum octenyl succinate (Dry Flo); tetrafluoroethylene polymer powder; metal soaps derived from organic carboxylic acids having 8 to 22 carbon atoms, preferably 12 to 18 carbon atoms, such as zinc stearate, magnesium stearate or lithium stearate, zinc laurate, magnesium myristate; Polypore® L 200 (Chemdal); silicone resin microbeads (e.g., Tospearl® from Toshiba); spherical organopolysiloxane elastomer powders having the INCI name: polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymers (DOWSIL TREFIL E-506 S Silicone Powder®, DOWSIL 9506 Powder® from Dow Corning Chemical); polyurethane powders, particularly crosslinked polyurethane powders containing copolymers comprising trimethylolpropene lactone, such as hexamethylene diisocyanate / trimethylolpropene lactone polymers sold by Toshiki under the names Plastic Powder D-400® or Plastic Powder D-800®; carnauba microcrystalline waxes, such as those sold by Micro Powders under the name MicroCare. Products sold by 350®; synthetic wax microcrystalline waxes, such as those sold by American Micron under the name MicroEase 114S®; microcrystalline waxes composed of mixtures of carnauba wax and polyethylene wax, such as those sold by American Micron under the names MicroCare 300® and 310®; microcrystalline waxes composed of mixtures of carnauba wax and synthetic waxes, such as those sold by American Micron under the name MicroCare 325®; polyethylene microcrystalline waxes, such as those sold by American Micron under the names Micropoly 200®, 220®, 220L®, and 250S®; and fibers of synthetic or natural, as well as mineral or organic origin.

[0167] These fibers can be short or long, single or organized (e.g., braided), and hollow or solid. They can have any shape and can particularly have circular or polygonal (square, hexagonal, or octagonal) cross-sections, depending on the specific application envisioned. In particular, their ends are passivated and / or polished to prevent damage. The fibers have lengths ranging from 1 µm to 10 mm, preferably from 0.1 mm to 5 mm, and even more preferably from 0.3 mm to 3 mm. Their cross-sections can include circles with diameters ranging from 2 nm to 500 µm, preferably from 100 nm to 100 µm, and even more preferably from 1 µm to 50 µm; and mixtures thereof.

[0168] Particulate colorant

[0169] According to a preferred embodiment, the dispersion (A) contains at least one particulate colorant.

[0170] The particulate colorant according to the present invention is preferably selected from pigments, pearlescent agents and reflective particles, and mixtures thereof.

[0171] The composition according to the invention may contain a particulate colorant in a preferably range of 40% to 90% by weight and more preferably 50% to 80% by weight relative to the total weight of the composition.

[0172] pigment

[0173] The term “pigment” should be understood to mean any shape of white or colored mineral or organic particles that are insoluble in physiological media.

[0174] Pigments can be white or colored, and can be mineral and / or organic.

[0175] Among mineral pigments, one may mention titanium dioxide, zirconium oxide or cerium oxide, as well as zinc oxide, iron oxide (black, yellow or red) or chromium oxide, manganese violet, ultramarine, ultramarine powder or ultramarine violet, chromium hydrate and iron blue, bismuth oxychloride and metal powders (such as aluminum powder or copper powder).

[0176] According to a particular form of the invention, the mineral pigment comprises at least one lipophilic or hydrophobic coating.

[0177] According to specific embodiments of the present invention, pigments can be coated with at least one compound selected from: metallic soaps; N-acyl amino acids or their salts; lecithin and its derivatives; isopropoxytitanium triisostearate; isostearyl sebacate; natural plant or animal waxes; synthetic polar waxes; fatty esters; phospholipids; silicone surfactants such as organopolysiloxanes, alkylalkoxysilanes such as triethoxyoctylsilane; fluorinated surfactants such as perfluoroalkyl phosphates, perfluoropolyethers, polytetrafluoroethylene (PTFE), perfluoroalkanes, perfluoroalkylsilazanes, polyhexafluoropropylene oxide, polyorganosiloxanes containing perfluoroalkyl perfluoropolyether groups; fluorosilicone surfactants such as perfluoroalkyl polydimethylsiloxanes, perfluoroalkylsilanes and perfluoroalkyltrialkoxysilanes; and mixtures thereof.

[0178] According to a specific embodiment, the pigment may be coated with an N-acyl amino acid or a salt thereof according to the present invention, which may contain an acyl group having 8 to 22 carbon atoms, such as 2-ethylhexanoyl, hexanoyl, lauroyl, myristoyl, palmitoyl, stearyl or cocoyl.

[0179] The amino acid can be, for example, lysine, glutamic acid, or alanine. Salts of these compounds can be aluminum, magnesium, calcium, zirconium, zinc, sodium, or potassium salts. Therefore, according to a particularly preferred embodiment, the pigment can be coated with an N-acyl amino acid derivative, which can be, in particular, a glutamic acid derivative and / or its salt, and more particularly, a stearoyl glutamate salt, such as aluminum stearoyl glutamate. Examples of pigments treated with aluminum stearoyl glutamate include titanium dioxide pigments and black, red, and yellow iron oxide pigments (sold by Miyoshi Kasei Co., Ltd. under the trade name NAI®).

[0180] According to specific embodiments, pigments can be coated with isopropoxytitanium triisostearate (ITT) according to the present invention. Examples of pigments treated with ITT include those sold by Kobo Corporation under the trade names BWBO-I2® (iron oxide CI77499 and isopropoxytitanium triisostearate), BWYO-I2® (iron oxide CI77492 and isopropoxytitanium triisostearate), and BWRO-I2® (iron oxide CI77491 and isopropoxytitanium triisostearate).

[0181] Organic pigments can be selected from the following materials and mixtures thereof:

[0182] - Cochineal

[0183] - Organic pigments of azo dyes, anthraquinone dyes, indigo dyes, xanthan dyes, pyrene dyes, quinoline dyes, triphenylmethane dyes, and fluorane dyes.

[0184] Among organic pigments, those certified by D&C and known by the following names are particularly noteworthy: 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, and 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.

[0185] The chemical materials corresponding to each of the organic colorants mentioned above are mentioned in the publication "International Cosmetic Ingredient Dictionary and Handbook" published by The Cosmetic, Toiletry and Fragrance Association, 1997 edition, pp. 371-386 and 524-528.

[0186] More specifically, the pigment will be selected from titanium dioxide, iron oxide (black, yellow or red), and mixtures thereof; the pigment may optionally contain at least one lipophilic or hydrophobic coating.

[0187] pearlescent agent

[0188] The term “pearlite” should be understood to mean any form of colored particles (which may or may not be iridescent), particularly produced by certain mollusks within their shells, or otherwise synthetic, and which have a color effect through optical interference.

[0189] Examples of pearlescent agents that may be mentioned include pearlescent pigments, such as mica coated with titanium oxide and then coated with iron oxide, mica coated with bismuth oxychloride, mica coated with titanium oxide and then coated with chromium oxide, and pearlescent pigments based on bismuth oxychloride. These pearlescent agents may also be mica particles with at least two layers of metal oxide and / or organic colorant layer superimposed on their surface in sequence.

[0190] Pearlescent agents can be more specifically available in yellow, pink, red, bronze, orange, brown, green, blue, purple and / or copper colors or hues.

[0191] Examples of pearlescent agents that can be introduced into a composition include gold pearlescent agents specifically marketed by Engelhard under the names Brilliant Gold 212G® (Timica), Gold 222C® (Cloisonne), SparkleGold® (Timica), Gold 4504® (Chromalite), and Monarch Gold 233X® (Cloisonne); bronze pearlescent agents specifically marketed by Merck under the names Bronze Fine® (17384) (Colorona) and Bronze® (17353) (Colorona), and by Engelhard under the name Super Bronze® (Cloisonne); and specifically by Engelhard under the names Orange 363C® (Cloisonne) and Orange MCR 101® (Cosmica), and by Merck under the names Passion Orange® (Colorona) and Matte. Orange pearlescent agents sold by Orange® (17449) (Microna); particularly brown pearlescent agents sold by Engelhard under the names Nu-Antique Copper 340XB® (Cloisonne) and Brown CL4509® (Chromalite); pearlescent agents with copper hues sold by Engelhard under the name Copper 340A® (Timica); particularly red pearlescent agents sold by Merck under the name SiennaFine® (17386) (Colorona); particularly yellow pearlescent agents sold by Engelhard under the name Yellow® (4502) (Chromalite); particularly red pearlescent agents with gold hues sold by Engelhard under the name Sunstone G012® (Gemtone); particularly pink pearlescent agents sold by Engelhard under the name Tan Opal G005® (Gemtone); particularly pearlescent agents sold by Engelhard under the name Nu-Antique Black pearlescent agents with a gold tint sold by Bronze 240 AB® (Timica), particularly blue pearlescent agents sold by Merck under the name Matte Blue® (17433) (Microna); white pearlescent agents with a silver tint sold by Merck under the name Xirona Silver®; and gold-green and pink-orange pearlescent agents sold by Merck under the name Indian Summer® (Xirona); and mixtures thereof.

[0192] As another example of a pearlescent agent, particles comprising a borosilicate substrate coated with titanium dioxide can also be mentioned.

[0193] The particles containing a glass substrate coated with titanium oxide are particularly sold by Toyal Co., Ltd. under the name Metashine MC1080RY®.

[0194] Finally, examples of pearlescent agents that can also be mentioned include polyethylene terephthalate glitter flakes, particularly those marketed by Meadowbrook Inventions under the name Silver 1P 0.004X0.004®.

[0195] Reflective particles

[0196] The term "reflective particles" refers to particles whose size, structure, and especially the thickness of the layers they are made of, as well as their physical and chemical properties and surface condition, allow them to reflect incident light. When a composition or mixture is applied to a carrier to be cosmetically applied, this reflection can, where appropriate, have an intensity sufficient to produce visible highlights (i.e., brighter points that make them appear shimmering and contrast with their environment) on the surface of the composition or mixture.

[0197] Reflective particles can be selected so as not to significantly alter the coloring effect produced by the colorants combined with them, and more specifically, to optimize this effect in color reproduction. They can more specifically have yellow, pink, red, bronze, orange, brown, gold and / or copper colors or hues.

[0198] These particles can take different forms and can be, in particular, in sheet-like or spherical form, especially in spherical form.

[0199] Regardless of their form, reflective particles may or may not have a multilayer structure, and in the case of a multilayer structure, they may have, for example, at least one layer of reflective material of uniform thickness.

[0200] When reflective particles do not have a multilayer structure, they can be composed of, for example, metal oxides, particularly synthetically obtained titanium oxide or iron oxide.

[0201] When reflective particles have a multilayer structure, they may comprise, for example, a natural or synthetic substrate, particularly a synthetic substrate at least partially coated with a layer of at least one reflective material, especially at least one metal or metallic material. The substrate may be organic and / or inorganic, and may be made of a single material or multiple materials.

[0202] More specifically, it can be selected from glass, ceramics, graphite, metal oxides, alumina, silicon dioxide, silicates (especially aluminosilicates and borosilicates) and synthetic mica, and mixtures thereof, and this list is not limiting.

[0203] Reflective materials may include a metal layer or a layer of metallic material.

[0204] Reflective particles are specifically described in documents JP-A-09188830, JP-A-10158450, JP-A-10158541, JP-A-07258460 and JP-A-05017710.

[0205] Still as an example of reflective particles comprising mineral substrates coated with a metal layer, one could also mention particles comprising borosilicate substrates coated with silver.

[0206] Granules in sheet form with a silver-coated glass substrate are sold by Toyo Co., Ltd. under the name Microglass Metashine REFSX 2025 PS®. Granules with a glass substrate coated with a nickel / chromium / molybdenum alloy are sold by the same company under the names Crystal Star GF 550® and GF 2525®.

[0207] Particles containing a metal substrate, such as silver, aluminum, iron, chromium, nickel, molybdenum, gold, copper, zinc, tin, magnesium, steel, bronze, or titanium, may also be used. The substrate is coated with a layer of at least one metal oxide, such as titanium oxide, aluminum oxide, iron oxide, cerium oxide, chromium oxide, silicon oxide, and mixtures thereof.

[0208] Examples that may be mentioned include aluminum powder, bronze powder, or copper powder coated with SiO2, which is sold by Eckart under the name Visionaire®.

[0209] More specifically, the particulate colorant will be selected from pigments, and more particularly from titanium dioxide, iron oxide (black, yellow or red), and mixtures thereof; the pigments will more particularly optionally contain at least one lipophilic or hydrophobic coating agent.

[0210] According to a specific form of the invention, the particulate colorant is selected from:

[0211] - Titanium dioxide (CI: 77891), which is preferably hydrophobically coated, and more particularly coated with sodium lauroyl glutamate and lysine, such as the commercial product ASL-1TIO2 CR-50® from Daito Kasei Kogyo Co., Ltd., INCI name CI 77891 (and) aluminum hydroxide (and) sodium lauroyl glutamate (and) lysine (and) magnesium chloride;

[0212] - Yellow iron oxide (CI: 77492), which is preferably hydrophobically coated, and more particularly coated with sodium lauroyl glutamate and lysine, such as the commercial product ASL-1 YELLOW LL-100P® from Daito Chemical Industries, Ltd., INCI name CI 77492 (and) aluminum hydroxide (and) sodium lauroyl glutamate (and) lysine (and) magnesium chloride;

[0213] - Red iron oxide (CI: 77491), which is preferably hydrophobically coated, and more particularly coated with sodium lauroyl glutamate and lysine, such as the commercial product ASL-2 RED R-516P® from Daito Chemical Industries, Ltd., INCI name CI 77491 (and) aluminum hydroxide (and) sodium lauroyl glutamate (and) lysine (and) magnesium chloride;

[0214] - Black iron oxide (CI: 77499), which is preferably hydrophobically coated, and more particularly coated with sodium lauroyl glutamate and lysine, such as the commercial product ASL-1 BLACK BL-100P® from Daito Chemical Industries, Ltd., INCI name CI 77499 (and) aluminum hydroxide (and) sodium lauroyl glutamate (and) lysine (and) magnesium chloride;

[0215] - Its mixture.

[0216] Method for producing anhydrous dispersions (A) of particulate matter

[0217] Another subject of the present invention relates to a method for producing an anhydrous dispersion (A) of a particulate matter as defined above, the method comprising at least one step of milling the polyol, the polymer dispersant and the particulate matter.

[0218] The particulate matter, polymer dispersant, and polyol are mixed in proportions according to the invention, and then ground using a mill for particulate liquid phase dispersion (e.g., an Exakt 50i® three-roll mill).

[0219] Compositions for the care and / or cosmetic application of keratin materials (B)

[0220] Another subject of the invention relates to a composition (B) for treating and / or cosmetically applying keratin materials as defined above, particularly comprising, in a physiologically acceptable medium:

[0221] a) At least one aqueous phase; and

[0222] b) An anhydrous dispersion (A) as defined above, which is obtained by at least one step of grinding particulate matter, polymer dispersant and polyol.

[0223] The nursing and / or cosmetic composition (B) according to the present invention may be selected from gels, creams, emulsions and lotions.

[0224] The nursing and / or cosmetic composition (B) according to the invention can be liquid or solid, such as a hot-cast product.

[0225] The nursing and / or cosmetic composition (B) according to the invention may be selected from multiphase compositions, such as emulsions, for example, oil-in-water emulsions, water-in-oil-in-water emulsions, or oil-in-water-in-oil multi-emulsions, or two-phase or three-phase compositions, particularly two-phase gels also referred to as gel / gel compositions, such as those described in patents EP 2958540 B1, EP 2958541 B1, and EP 3185958B1.

[0226] A suitable care and / or cosmetic composition (B) according to the invention may contain one or more compounds that are well known to those skilled in the art and are commonly found in foundations.

[0227] The care and / or cosmetic composition (B) according to the present invention may additionally include additives commonly used in care and / or cosmetic products, such as:

[0228] - Active agents, such as moisturizers like hydroxyethyl urea, vitamins such as vitamins A, E, C and B3, adenosine, and hyaluronic acid and its salts;

[0229] - Ceramides;

[0230] - UV shielding agent;

[0231] - Water-soluble dyes, fat-soluble dyes;

[0232] - Hydrophilic gelling agents;

[0233] - Lipophilic gelling agents;

[0234] - Spices;

[0235] - Preservatives;

[0236] - and its mixtures.

[0237] Such compositions are prepared specifically based on the general knowledge of those skilled in the art.

[0238] According to a specific embodiment, the composition (B) according to the invention is a skin care product, particularly a sunscreen product, a product for oily skin, a product for dry skin, or an anti-aging product.

[0239] According to a specific embodiment, the composition (B) according to the invention is a product for applying makeup to the face, such as foundation; a product for applying makeup to the lips, such as lipstick; or a product for applying makeup to eyelashes or eyebrows, such as mascara or eyeliner.

[0240] Obviously, those skilled in the art will use their common knowledge to prepare composition (B) that can be used in the context of this invention to adjust the properties of the compounds in the composition.

[0241] For high-viscosity compositions (B), such as thick creams, the viscosity measured at 25°C and atmospheric pressure is within 200 s. -1 The viscosity was greater than or equal to 4.5 Pa·s and less than or equal to 50 Pa·s at a shear rate (measured using a Brookfield Rheomat RM 180® viscometer equipped with a No. 4 rotor, after 10 minutes of rotor rotation to stabilize the speed and viscosity).

[0242] For composition (B) with better flowability, the viscosity is 200 s. -1 The shear rate can be less than 4.5 Pa·s, for example, between 1 mPa·s (or 1 cps) and 4.5 Pa·s (measured using a Brookfield Rheomat RM180® viscometer equipped with a No. 4 rotor, after the rotor has been rotating for 10 minutes to stabilize the speed and viscosity).

[0243] Components

[0244] According to another aspect, the present invention also relates to a cosmetic component comprising:

[0245] i) A container defining one or more compartments, said container being closed by a closure element; and

[0246] ii) The cosmetic and / or care composition (B) according to the invention arranged in the compartment.

[0247] The container can be in the form of, for example, a can or a box.

[0248] The closure element can be in the form of a cap or a tear-off cover. In particular, the closure element may include a top cover that is mounted to be movable relative to the container containing the cosmetic and / or care composition by translation or by pivoting.

[0249] It should be understood that, in the context of this invention, the weight percentage given for a compound or family of compounds is always expressed by weight relative to the total weight of the composition.

[0250] Throughout the patent application, unless otherwise stated, the phrase "comprises a" should be understood to mean "comprising at least one".

[0251] It should be understood that the following examples are presented in an illustrative manner and do not in any way limit the scope of protection granted by this patent application. Example

[0252] The following pigment dispersions (A1) (in this invention) and (A2) (not in this invention) are produced according to the following schemes.

[0253] [Table 1]

[0254]

[0255] Schemes for preparing pigment dispersions A1 and A2:

[0256] Premix the ingredients using a spatula, and then grind the mixture using an Exakt 50i® three-roll mill.

[0257] Then, the pigment formulations (A1) and (A2) were rheologically characterized in order to measure the consistency value G. The quality of compositions (B1) or (B2) obtained by introducing dispersion (A1) or dispersion (A2) into water was evaluated. The results are indicated in Table 2.

[0258] [Table 2]

[0259]

[0260] Rheological scheme:

[0261] Rheological measurements were performed in a stress-applied rheometer (RheoStress 600®, Haake). Shear stress and rate gradient measurements were performed using a plate sensor and measuring plate (PP35 S; 35 mm in diameter, sandblasted) with a gap of 0.500 mm.

[0262] Set the gap temperature to 25°C. Maintain a constant temperature at this level for 180 seconds before each measurement. Apply an upward oscillating curve with amplitude sweeps, the stress rise ranging from 1 to 10. 3 Pa, with a frequency set to 1 Hz, has 20 fixed phases.

[0263] A scheme for studying dispersion quality in water:

[0264] Take a sample of each particulate dispersion (A1) or (A2) from the tip of a spatula and disperse it in water. Then observe the dispersion quality of the resulting composition (B1) or (B2) under a microscope.

[0265] Lower complex modulus G Indicates a higher fluid consistency.

[0266] Compared to the non-inventive aqueous composition (B2) obtained using an aqueous pigment dispersion (A2) containing the surfactant PEG-9 polydimethylsiloxane, the anhydrous pigment dispersion (A1) according to the invention enables the acquisition of an aqueous composition (B1) with higher fluid consistency and better dispersion quality in the aqueous phase.

[0267] Furthermore, the composition (B1) according to the invention did not deposit over time after two months at ambient temperature.

Claims

1. An anhydrous dispersion (A) of a particulate matter, particularly comprising in a physiologically acceptable medium: a) at least one polyol; and b) At least one polymer dispersant soluble in the polyol; and c) At least one particulate matter.

2. The dispersion of claim 1, comprising at least 1,3-butanediol, and preferably a mixture of glycerol and 1,3-butanediol, more preferably wherein the mass ratio of 1,3-butanediol to glycerol is in the range of 1 to 5, and more particularly in the range of 2 to 4.

3. The dispersion as described in claim 1 or 2, wherein, The polyol is preferably present in a content ranging from 10% to 60% by weight relative to the total weight of the composition, and more preferably from 20% to 50% by weight.

4. The dispersion as described in any one of the preceding claims, wherein, The polymer dispersant is a dispersing polymer comprising a main chain and at least one side chain grafted onto the main chain. The main chain is derived from at least one monomer, which contains at least one α,β-monoene bond unsaturation and at least one functional group selected from the group consisting of: carboxylic acids, carboxylic esters, carboxylate salts and mixtures thereof. The side chain comprises at least one straight-chain or branched C2-C8 alkylene oxide group or a mixture of alkylene oxide groups; the side chain may optionally be substituted with a straight-chain or branched alkyl chain comprising 1 to 6 carbon atoms.

5. The dispersion as described in claim 4, wherein, The main chain of the polymer dispersant is derived from at least one monomer selected from (meth)acrylic acid, its esters, its salts and mixtures thereof.

6. The dispersion as described in claim 4 or 5, wherein, The main chain of the polymer dispersant is derived from methacrylate.

7. The dispersion according to any one of claims 4 to 6, wherein, The polymer dispersant contains at least one unsubstituted side chain.

8. The dispersion according to any one of claims 4 to 7, wherein, The polymer dispersant contains at least one side chain, which is replaced by a methyl or ethyl chain.

9. The dispersion according to any one of claims 4 to 8, wherein, The polymer dispersant contains at least one side chain consisting of an ethylene oxide group or an propylene oxide group or a mixture thereof.

10. The dispersion according to any one of claims 4 to 9, wherein, The side chains of the polymer dispersant are distributed randomly or statistically.

11. The dispersion according to any one of claims 4 to 10, wherein, The polymer dispersant is a comb copolymer comprising a polymethacrylic acid backbone side-linked with poly(ethylene oxy) and / or poly(propylene oxy) groups.

12. The dispersion according to any one of claims 4 to 11, wherein, The polymer dispersant corresponds to the following formula: in: n is an integer ranging from 50 to 4000; i is an integer ranging from 1 to n; Group R' i They may be the same or different, and independently represent H or a straight-chain or branched alkyl group containing 1 to 10 carbon atoms; and Group R i They can be the same or different, and can be independently selected from the following groups: -C(=O)OH, -C(=O)OX + and -C(=O)O-(A) p -R a The group R i At least one of the following represents -C(=O)O-(A) p -R a ,in: X is an alkali metal or an alkaline earth metal; or X + Indicates quaternary ammonium; R a Represents H or a straight-chain or branched alkyl group containing 1 to 6 carbon atoms; A represents a straight-chain or branched C2-C8 alkylene oxide group or a mixture thereof; and p is an integer ranging from 1 to 200.

13. The dispersion according to any one of claims 4 to 12, wherein, The polymer dispersant comprises at least one repeating unit (T1) and at least one repeating unit (T2), the repeating unit having the following corresponding formula: in: p is an integer ranging from 1 to 200; X represents an alkali metal or an alkaline earth metal; or X+ represents quaternary ammonium. R a Represents H or a straight-chain or branched alkyl group containing 1 to 6 carbon atoms; R and R' can be the same or different, and independently represent H or a straight-chain or branched alkyl group containing 1 to 10 carbon atoms; and A represents a straight-chain or branched C2-C8 alkylene oxide group or a mixture thereof.

14. The dispersion according to any one of claims 4 to 13, wherein, The polymer dispersant corresponds to the following formula: in: 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. Units -CH2-C(R)(C(=O)ONa)- and -CH2-C(R')(C(=O)O-(CH2-CH2-O) p R' a - Distributed randomly or statistically.

15. The dispersion according to any one of claims 4 to 14, wherein, The polymer dispersant corresponds to the following formula: in: 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; Units -CH2-C(R)(C(=O)ONa)- and -CH2-C(R')(C(=O)O-(CH2-CH2-O) p CH3) - distributed randomly or statistically.

16. The dispersion according to any one of claims 4 to 15, wherein, The mass-average molecular weight (Mw) of the polymer dispersant ranges from 50,000 to 90,000 g / mol.

17. The dispersion according to any one of claims 1 to 16, wherein, The polymer dispersant has the INCI name sodium methacrylate / PEG / PPG-45 / 15 hydroxypropyl methacrylate copolymer.

18. The dispersion as claimed in any of the preceding claims, comprising a polymeric dispersant in a total amount of greater than or equal to 0.1% by weight, preferably greater than or equal to 0.5% by weight, even more preferably in a range of 0.2% to 5% by weight relative to the total weight of the composition, particularly in a range of 0.5% to 3% by weight relative to the total weight of the composition.

19. The dispersion as claimed in any of the preceding claims, wherein, The particulate matter is selected from fillers, particulate colorants, and mixtures thereof.

20. The dispersion as claimed in any of the preceding claims, comprising at least one particulate colorant, said at least one particulate colorant preferably selected from pigments, pearlescent agents, reflective particles, and mixtures thereof.

21. The dispersion of claim 20, comprising a particulate colorant in a preferably range of 40% to 90% by weight and more preferably range of 50% to 80% by weight relative to the total weight of the composition.

22. The dispersion as claimed in claim 20 or 21, wherein, The particulate colorant is selected from: - Titanium dioxide (CI: 77891), which is preferably hydrophobically coated, and more particularly coated with sodium lauroyl glutamate and lysine; - Yellow iron oxide (CI: 77492), which is preferably hydrophobically coated, and more particularly coated with sodium lauroyl glutamate and lysine; - Red iron oxide (CI: 77491), which is preferably hydrophobically coated, and more particularly coated with sodium lauroyl glutamate and lysine; - Black iron oxide (CI: 77499), which is preferably hydrophobically coated, and more particularly coated with sodium lauroyl glutamate and lysine; - Its mixture.

23. A method for producing an anhydrous dispersion (A) of a particulate material as described in any of the preceding claims, the method comprising at least one step of milling the polymer dispersant, the polyol, and the particulate material.

24. A dispersion (A) of particulate matter, which can be obtained by the method as described in claim 23.

25. A composition (B) for treating and / or cosmetically applying keratin materials, particularly comprising, in a physiologically acceptable medium: a) At least one aqueous phase; and b) Anhydrous dispersion (A) as defined in any one of claims 1 to 24.

26. A cosmetic component comprising: i) A container defining one or more compartments, the container being closed by a closure element; and ii) The composition (B) of claim 25 arranged in the compartment.

27. A method for coating keratin materials, more particularly for caring for and / or cosmetically applying keratin materials such as skin, characterized in that, The method includes applying the composition (B) of claim 25 to the keratin material.

Images