CLAIMS

1. Oily dispersion (A), which is preferably anhydrous, comprising:

i) one or more particles including one or more polymers chosen from:

a) ethylenic homopolymers of (CrC4)alkyl (Ci-C4)(alkyl)acrylate, preferably (CrC4)alkyl (meth)acrylate;

b) ethylenic copolymers of b1) (CrC4)alkyl (Ci-C4)(alkyl)acrylate, and of b2) ethylenic monomers comprising one or more carboxyl, anhydride, phosphoric acid, sulfonic acid and/or aryl groups such as benzyl; in particular, b2) is a (Ci- C4)(alkyl)acrylic acid, more particularly copolymers of (CrC4)alkyl (meth)acrylate and of (meth)acrylic acid;

c) ethylenic homopolymers of (CrC4)alkyl (Ci-C4)(alkyl)acrylate, preferably (CrC4)alkyl (meth)acrylate; and

ii) one or more polymeric stabilizers chosen from:

d) ethylenic homopolymers of (Cg-C22)alkyl (Ci-C6)(alkyl)acrylate, preferably (Cg-C22)alkyl (meth)acrylate ethylenic homopolymers; and

e) ethylenic copolymers of (Cg-C22)alkyl (Ci-C6)(alkyl)acrylate and of (Ci- C4)alkyl (Ci-C4)(alkyl)acrylate, preferably copolymers of (Cg-C22)alkyl (meth)acrylate and of (CrC4)alkyl (meth)acrylate;

iii) one or more hydrocarbon-based liquid fatty substances; and

iv) optionally one or more cosmetic active agents chosen from f) dyes, g) pigments; h) active agents for caring for keratin materials, notably the skin, and j) UV (A) and/or (B) screening agents, and m) mixtures thereof.

2. Oily dispersion (A) according to the preceding claim, in which the particles i) consist of an ethylenic polymeric core obtained from homopolymers a) or from copolymers b) or c), as defined in the preceding claim, and ii) of one or more polymeric surface stabilizers obtained from homopolymer d) and the copolymers e) as defined in the preceding claim.

3. Oily dispersion (A) according to Claim 1 or 2, in which the polymer(s) constituting the particles i) are chosen from acrylate ethylenic homopolymers c) resulting from the polymerization of an identical monomer of formula (I):

H2C=C(R)-C(0)-0-R' (I)

in which formula (I):

- R represents a hydrogen atom or a (CrC4)alkyl group such as a methyl, and

- R’ represents a (CrC4)alkyl group such as methyl or ethyl, preferably a C1-C4 alkyl acrylate such as methyl acrylate.

4. Oily dispersion (A) according to Claim 1 or 2, in which the poly er(s) constituting the particles i) are chosen from acrylate ethylenic copolymers b) resulting from the polymerization:

- of at least two different monomers of formula (I) as defined in the preceding claim, preferably a C1-C4 alkyl acrylate such as methyl acrylate and ethyl acrylate; and

- optionally of a monomer of formula (II) H2C=C(R)-C(0)-0-H with R as defined in the preceding claim, in particular acrylic acid.

5. Oily dispersion (A) according to any one of the preceding claims, in which the monomers are chosen from C1 -C4 alkyl (meth)acrylates such as methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate or tert-butyl (meth)acrylate, more preferentially chosen from methyl (meth)acrylate and ethyl (meth)acrylate.

6. Oily dispersion according to any one of the preceding claims, in which the oily dispersion (A) includes from 60% to 98% by weight, notably from 75% to 96% of monomers a) to c) relative to the total weight of polymers contained in said dispersion.

7. Oily dispersion (A) according to any one of the preceding claims, in which the stabilizer(s) ii) are chosen from d) ethylenic homopolymers of (Cg-C22)alkyl (Ci- C6)(alkyl)acrylate; in particular ethylenic homopolymers of (Cg-Ci8)alkyl (Ci- C4)(alkyl)acrylate; more particularly ethylenic homopolymers derived from the polymerization of monomers of formula (I) as defined in Claim 3 with R representing a hydrogen atom or a (CrC4)alkyl group such as methyl, and R" representing a (Cg- C22)alkyl and preferably (Cs-Ci8)alkyl group; preferably, R" represents isodecyl, lauryl, stearyl, hexadecyl or behenyl.

8. Oily dispersion (A) according to any one of the preceding claims, in which the stabilizer(s) ii) are chosen from isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylate homopolymer and statistical copolymers of isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylate and of C1-C4 alkyl (meth)acrylate; preferably present in a 2-ethylhexyl, isooctyl, isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylate/Ci-C4 alkyl (meth)acrylate weight ratio of greater than 4; advantageously, said weight ratio ranges from 5 to 15, and more preferentially said weight ratio ranges from 5.5 to 12.

9. Oily dispersion (A) according to any one of Claims 1 to 6, in which the stabilizer(s) ii) are chosen from e) ethylenic copolymers of (Cg-C22)alkyl (Ci-Ce)(alkyl)acrylate and of (CrC4)alkyl (Ci-C4)(alkyl)acrylate, particularly copolymers of (Cg-Ci8)alkyl (Ci-C4)(alkyl)acrylate and of (CrC4)alkyl (Ci-C4)(alkyl)acrylate, more particularly copolymers of (Cg-Ci8)alkyl (meth)acrylate and of (CrC4)alkyl (meth)acrylate; preferentially, the stabilizer(s) ii) are chosen from the ethylenic copolymers e) of formulae (III) and (IV):

H2C=C(R)-C(0)-0-R' (III) and H2C=C(R)-C(0)-0-R" (IV)

in which formulae (III) and (IV):

- R, which may be identical or different, represent a hydrogen atom or a (CrC4)alkyl group such as methyl,

- R’, which may be identical or different, represent a (CrC4)alkyl group such as methyl or ethyl, and

- R" represents a (Cg-C22)alkyl, particularly (Cio-C2o)alkyl and in particular (C2n)alkyl group with n being an integer equal to 5, 6, 7, 8, 9 or 10; preferably, R" represents isodecyl, lauryl, stearyl, hexadecyl or behenyl.

10. Oily dispersion (A) according to any one of Claims 1 to 6, in which the stabilizers(s) ii) are chosen from ethylenic copolymers e) resulting from the polymerization of a monomer of formula (IV) as defined in the preceding claim and of two different monomers of formula (III) as defined in the preceding claim; preferentially, the stabilizer(s) ii) are chosen from copolymers resulting from the polymerization of one monomer chosen from isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylates and of two different C1-C4 alkyl (meth)acrylate monomers, preferably methyl acrylate and ethyl acrylate; in particular, the weight ratio of isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylates/Ci-C4 alkyl (meth)acrylate is greater than 4; advantageously, said weight ratio ranges from 5 to 15 and more preferentially said weight ratio ranges from 5.5 to 11.

11. Oily dispersion (A) according to any one of Claims 1 to 6, in which the stabilizers(s) ii) are chosen from ethylenic copolymers e) resulting from the polymerization of a monomer of formula (III) as defined in the preceding claim and of two different monomers of formula (IV) as defined in Claim 9; preferentially, the stabilizer(s) ii) are chosen from copolymers resulting from the polymerization of two different monomers chosen from isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylates and of one C1-C4 alkyl (meth)acrylate monomer, preferably methyl acrylate and ethyl acrylate; in particular, the weight ratio of isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylates/Ci-C4 alkyl (meth)acrylate is greater than 4; advantageously, said weight ratio ranges from 4.5 to 10 and more preferentially said weight ratio ranges from 5 to 8.

12. Oily dispersion (A) according to any one of the preceding claims, in which the oily dispersion (A) includes from 2% to 40% by weight, in particular 4% to 25%, notably from 5.5% to 20% by weight of (Cg-C22)alkyl (Ci-C6)(alkyl)acrylate monomers included in d) or e) with the hydrocarbon-based liquid(s) iii), relative to the total weight of polymers contained in said dispersion.

13. Oily dispersion (A) according to any one of the preceding claims, in which the weight ratio of ii) the stabilizer(s) and i) of the polymer particle(s) present in the dispersion (A) is between 0.5 and 2, preferably 1.

14. Oily dispersion (A) according to any one of the preceding claims, in which the ii) stabilizer(s) + ii) polymer particle(s) assembly present in the dispersion (A) comprises from 2% to 40% by weight, notably from 4% to 30% by weight, preferably from 5% to 25% by weight relative to the total weight of the dispersion (A).

15. Oily dispersion (A) according to any one of the preceding claims, in which the liquid hydrocarbon-based fatty substance(s) iii) are chosen from hydrocarbons, in particular alkanes, oils of animal origin, oils of plant origin, glycerides or fluorinated oils of synthetic origin, fatty alcohols, esters of fatty acids and/or of fatty alcohols, non-silicone waxes, and silicones; in particular, the liquid hydrocarbon-based fatty substance(s) are hydrocarbon-based oils, which are preferably volatile, or are a mixture of different volatile oils, preferentially chosen from isododecane and octyldodecanol.

16. Oily dispersion (A) according to any one of the preceding claims, in which the liquid hydrocarbon-based fatty substance(s) iii) are chosen from:

- plant oils formed by fatty acid esters of polyols, in particular triglycerides, such as sunflower oil, sesame oil, rapeseed oil, macadamia oil, soybean oil, sweet almond oil, beauty-leaf oil, palm oil, grapeseed oil, corn oil, arara oil, cottonseed oil, apricot oil, avocado oil, jojoba oil, olive oil or cereal germ oil;

- linear, branched or cyclic esters containing more than 6 carbon atoms, notably 6 to 30 carbon atoms; and notably isononyl isononanoate;

and more particularly esters of formula Rd-C(0)-0-Re in which Rd represents a higher fatty acid residue including from 7 to 19 carbon atoms and Re represents a hydrocarbon-based chain including from 3 to 20 carbon atoms, such as palmitates, adipates, myristates and benzoates, notably diisopropyl adipate and isopropyl myristate;

- hydrocarbons and notably volatile or non-volatile, linear, branched and/or cyclic alkanes, such as C5-C60 isoparaffins, which are optionally volatile, such as

isododecane, Parleam (hydrogenated polyisobutene), isohexadecane, cyclohexane or isopars; or else liquid paraffins, liquid petroleum jelly, or hydrogenated polyisobutylene;

- ethers containing 6 to 30 carbon atoms;

- ketones containing 6 to 30 carbon atoms;

- aliphatic fatty monoalcohols containing 6 to 30 carbon atoms, the hydrocarbon- based chain not including any substitution groups, such as oleyl alcohol, decanol, dodecanol, octadecanol, octyldodecanol and linoleyl alcohol;

- polyols containing 6 to 30 carbon atoms, such as hexylene glycol; and

- mixtures thereof;

preferably, the liquid hydrocarbon-based fatty substance(s) iii) are chosen from hydrocarbon-based oils containing from 8 to 14 carbon atoms, which are in particular volatile, more particularly apolar oils; more particularly, the liquid hydrocarbon-based fatty substance(s) iii) are chosen from isododecane and octyldodecanol, more preferentially isododecane.

17. Oily dispersion (A) according to any one of the preceding claims, in which the liquid hydrocarbon-based fatty substance(s) iii) are present in the dispersion in a content ranging from 60% to 100% by weight relative to the total weight of the liquid hydrocarbon-based fatty substances present in the dispersion and from 0 to 40% by weight of silicone oil.

18. Oily dispersion (A) according to any one of the preceding claims, in which the cosmetic active agent(s) iv) are chosen from f) dyes, preferably chosen from:

oxidation dyes which are generally chosen from one or more oxidation bases, optionally combined with one or more coupling agents; particularly, the oxidation bases are chosen from para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols and heterocyclic bases and the corresponding addition salts, optionally combined with coupling agents, in particular chosen from meta-phenylenediamines, meta-aminophenols, meta-diphenols, coupling agents based on naphthalene and heterocyclic coupling agents and also the corresponding addition salts;

direct dyes, notably azo direct dyes; (poly)methine dyes such as cyanines, hemicyanines and styryls; carbonyl dyes; azine dyes; nitro(hetero)aryl dyes; tri(hetero)arylmethane dyes; porphyrin dyes; phthalocyanine dyes and natural direct dyes, alone or in the form of mixtures, the direct dyes may in particular be anionic, cationic or neutral; and

natural dyes, notably chosen from hennotannic acid, juglone, alizarin, purpurin, carminic acid, kermesic acid, purpurogallin, protocatechaldehyde, indigo, isatin,

curcumin, spinulosin, apigenidin and orcein, and also extracts or decoctions containing these natural dyes.

19. Oily dispersion (A) according to any one of Claims 1 to 17, in which the cosmetic active agent(s) iv) are chosen from:

- organic pigments and mineral or inorganic pigments,

- , thermochromes, photochromes)carbonnesble sarvoir faire avec tous les details...ment comprenant les ingredients i) arme

en bi pigments with special effects such as fluorescent pigments, thermochromic pigments, photochromic pigments, coated or uncoated nacres, in the form of pigment powder or paste, lakes, and glitter flakes, or mixtures thereof;

- said pigments may be dispersed in the product by means of a dispersant and the pigments may be surface-treated with an organic agent;

in particular, the cosmetic active agent(s) iv) are chosen from:

- nitroso, nitro, azo, xanthene, quinoline, anthraquinone, phthalocyanine, metal complex type, isoindolinone, isoindoline, quinacridone, perinone, perylene, diketopyrrolopyrrole, thioindigo, dioxazine, triphenylmethane and quinophthalone organic pigments;

- white or coloured organic pigments which are chosen from carmine, carbon black, aniline black, azo yellow, quinacridone, phthalocyanin blue, sorghum red, the blue pigments codified in the Colour Index under the references Blue 1 Lake Cl 42090, 69800, 69825, 73000, 74100, 74160, the yellow pigments codified in the Colour Index under the references Cl 11680, 11710, 15985, 19140, 20040, 21100, 21108, 47000, 47005, the green pigments codified in the Colour Index under the references Cl 61565, 61570, 74260, the orange pigments codified in the Colour Index under the references Cl 11725, 15510, 45370, 71105, the red pigments codified in the Colour Index under the references Cl 12085, 12120, 12370, 12420, 12490, 14700, 15525, 15580, 15620, 15630, 15800, 15850, 15865, 15880, 17200, 26100, 45380, 45410, 58000, 73360, 73915, 75470, the pigments obtained by oxidative polymerization of indole or phenolic derivatives;

- mineral pigments or inorganic pigments chosen from iron oxides, chromium oxides, manganese violet, ultramarine blue, chromium hydrate, ferric blue and titanium oxide;

preferably, the cosmetic active agent(s) iv) are chosen from carbon black, iron oxides, notably red, brown or black iron oxides, and micas coated with iron oxide, triarylmethane pigments, notably blue and violet triarylmethane pigments, such as Blue 1 Lake, azo pigments, notably red azo pigments, such as D&C Red 7, an alkaline earth metal salt of lithol red, such as the calcium salt of lithol red B; more preferentially, the pigment(s) used are chosen from red iron oxides and azo pigments, notably red azo pigments such as D&C Red 7.

20;_Process for treating keratin materials, notably human keratin materials such as the hair or the skin, comprising the application to said materials of the oily dispersion (A) as defined in any one of the preceding claims, preferentially after application of the dispersion (A) to the keratin materials, the composition being left to dry on said keratin materials either naturally or with the aid of heating devices used in cosmetics, such as a hairdryer.

21. Kit or device with several separate compartments, comprising:

- in one compartment: the dispersion (A) comprising the ingredients i) to iii) as defined in any one of Claims 1 to 17, and

- divided among one or more different compartments, the following ingredients: f) dyes, g) pigments; h) active agents for caring for keratin materials, notably the skin, and j) UV (A) and/or (B) screening agents as defined in any one of Claims 1 , 18 or 19.

22;_Process for preparing dispersion (A) as defined in any one of Claims 1 to 19, comprising the following steps:

- in a first step, the stabilizer ii) is prepared by mixing the constituent monomer(s) of the stabilizing polymer d) or e) with v) a free-radical initiator, in a solvent, and by polymerizing these monomers;

- in a second step, the constituent monomers of the polymer of the particles i) are added to the stabilizer formed in the preceding step and polymerization of these added monomers is performed in the presence of the free-radical initiator;

it being understood that:

- when the non-aqueous medium is a non-volatile liquid hydrocarbon-based fatty substance iii), the polymerization may be performed in an apolar organic solvent and the non-volatile liquid hydrocarbon-based fatty substance is then added and the synthesis solvent may be selectively distilled off;

- when the non-aqueous medium is a volatile liquid hydrocarbon-based fatty substance iii), the polymerization may be performed directly in said oil, which also acts as synthesis solvent;

- the chosen cosmetic active agent(s) iv) may be added during the first step or the cosmetic active agent(s) are added during the second step or after the second step;

- the monomers of the stabilizing polymer ii), and the radical initiator v), are soluble in the synthesis solvent, and the polymer particles obtained are insoluble therein; in particular, the solvent is an apolar organic solvent preferably chosen from alkanes such as heptane, cyclohexane or isododecane, preferably isododecane.

;_Use of an oily dispersion (A) as defined in any one of Claims 1 to 19, for treating keratin materials, notably human keratin materials, such as the hair, the eyelashes, the eyebrows or the skin, preferably for dyeing keratin fibres and/or for shaping keratin fibres such as the hair, or for making up the skin.

Title: OILY DISPERSION COMPRISING A POLYMERIC PARTICLE AND A

STABILIZER BEARING A C9-C22 ALKYL GROUP, AND PROCESS FOR TREATING KERATIN MATERIALS USING THE OILY DISPERSION

[0001] The present invention relates to an oily dispersion (A) comprising i) at least one particle consisting of an ethylenic polymer, ii) at least one polymeric stabilizer comprising a (Cg-C22)alkyl group, and iii) at least one hydrocarbon-based fatty substance which is liquid at 20°C and 1 atmosphere. The invention also relates to a process for treating keratin materials, notably human keratin materials such as the skin, the hair or the eyelashes, involving the application to said materials of at least one oily dispersion (A); to a process for preparing the oily dispersion, and to a multi-compartment kit comprising ingredients i) to iii).

[0002] During the ageing process, various signs appear on the skin which are very characteristic of this ageing, reflected notably by a change in the skin structure and functions. The main clinical signs of skin ageing are notably the appearance of fine lines and deep wrinkles, which increase with age.

[0003] It is known practice to treat these signs of ageing using cosmetic or dermatological compositions containing active agents capable of combating ageing, such as a-hydroxy acids, b-hydroxy acids and retinoids. These active agents act on wrinkles by eliminating dead skin cells and by accelerating the cell renewal process. However, these active agents have the drawback of being effective for the treatment of wrinkles only after a certain application time. Now, it is increasingly sought to obtain an immediate effect of the active agents used, rapidly resulting in smoothing-out of wrinkles and fine lines and in the disappearance of the signs of fatigue.

[0004] Cosmetic products often require the use of a film-forming polymer to obtain a deposit of the product on keratin materials that has good cosmetic properties. In particular, it is necessary for the film-forming deposit to have good persistence, in particular for the deposit not to transfer during contact with the fingers or clothing, and also good persistence on contact with water, notably rain or during showering, or else for the deposit to be resistant to perspiration or sebum, and also to dietary fats, notably dietary fatty substances such as oils.

[0005] It is known practice to use dispersions of polymer particles, in organic media such as hydrocarbon-based oils. Polymers are notably used as film-forming agents in makeup products such as mascaras, eyeliners, eyeshadows or lipsticks. EP 0 749 747 describes in the examples dispersions in hydrocarbon-based oils (liquid paraffin, isododecane) of acrylic polymers stabilized with polystyrene/copoly(ethylene-propylene) diblock copolymers. The

film obtained after application of the dispersion to the skin is sparingly glossy. FR 1 362 795 also describes the use of dispersions of surface-stabilized polymer particles containing hydrocarbon-based oils for making up the lips and eyelashes. WO 2010/046229 describes dispersions in isododecane of acrylic polymers stabilized with stabilizing polymers. FR 1 362 795 describes the use of dispersions of surface-stabilized polymer particles containing hydrocarbon-based oils for making up the lips and the eyelashes. [0006] In the field of dyeing keratin fibres, it is already known practice to dye keratin fibres via various techniques using direct dyes for non-permanent dyeing, or dye precursors for permanent dyeing.

[0007] Non-permanent dyeing or direct dyeing consists in dyeing keratin fibres with dye compositions containing direct dyes. These dyes are coloured and colouring molecules that have affinity for keratin fibres. They are applied to the keratin fibres for a time necessary to obtain the desired colouring, and are then rinsed out.

[0008] The standard dyes that are used are, in particular, dyes of the nitrobenzene, anthraquinone, nitropyridine, azo, xanthene, acridine, azine or triarylmethane type, or natural dyes.

[0009] Some of these dyes may be used under lightening conditions, which enables the production of colourings that are visible on dark hair.

[0010] It is also known practice to dye keratin fibres permanently via oxidation dyeing. This dyeing technique consists in applying to the keratin fibres a composition containing dye precursors such as oxidation bases and couplers. Under the action of an oxidizing agent, these precursors, form one or more coloured substances in the hair.

[0011] The variety of molecules used as oxidation bases and couplers allows a wide range of colours to be obtained, and the colourings resulting therefrom are generally permanent, strong and resistant to external agents, notably to light, bad weather, washing, perspiration and rubbing.

[0012] In order to be visible on dark hair, these two dyeing techniques require prior or simultaneous bleaching of the keratin fibres. This bleaching step, performed with an oxidizing agent such as hydrogen peroxide or persalts, results in appreciable degradation of the keratin fibres, which impairs their cosmetic properties. The hair then has a tendency to become coarse, more difficult to disentangle and more brittle.

[0013] Another dyeing method consists in using pigments. Specifically, the use of pigment on the surface of keratin fibres generally makes it possible to obtain colourings that are visible on dark hair, since the surface pigment masks the natural colour of the fibre. The use of pigment for dyeing keratin fibres is described, for example, in patent application FR 2 741 530, which recommends using, for the temporary dyeing of keratin fibres, a composition comprising at least one dispersion of film-forming polymer particles including at least one acid function and at least one pigment dispersed in the continuous phase of said dispersion.

[0014] The colourings obtained via this dyeing method become removed from the very first shampoo wash.

[0015] It is moreover known practice from patent application FR 2 907 678 to perform coloured coatings of the hair using a composition comprising a polysiloxane/polyurea block copolymer and a pigment. However, with such a composition, the coatings obtained may occasionally lack homogeneity and the separation of the hair strands is not always satisfactory.

[0016] FR 3 014 875 describes the use of a dispersion of C1-C4 alkyl (meth)acrylate polymer particles surface-stabilized with an isobornyl (meth)acrylate polymeric stabilizer in a non-aqueous medium containing an oil. The deposits obtained using this technology are not always satisfactory, notably in terms of resistance to sebum. On the other hand, the induced odour of the stabilizer such as isobornyl methacrylate is not always satisfactory because it can smell strongly, in particular the odour of pine, or moldy (see for eg: International Journal of Adhesion and Adhesives, 78, 182-188 (2017). Those odours must therefore be masked, especially when the stabilizer concentration is high, in order to reach to a more neutral odour.

[0017] FR 3 029 786 is focused on makeup dispersions of polymer particles stabilized with at least one stabilizer which is a Cs alkyl (meth)acrylate homopolymer or a copolymer of Cs alkyl (2-ethylhexyl) (meth)acrylate and of C1-C4 alkyl (meth)acrylate. These dispersions are not always satisfactory in terms of resistance to the fatty substances of sebum, which may be a curb on their use in lip makeup, for example. Furthermore, these dispersions may have a feel that is considered too "tacky" after application to the keratin materials, which may be prohibitive for certain applications such as lip or eyelash makeup, etc.

[0018] Thus, the aim of the present invention is to provide a composition for treating keratin materials, in particular the skin, preferably human skin and more preferentially facial skin, which is not tacky, has good persistence with respect to external attacking factors, and over time, does not leach, and is resistant to sweat, sebum and oils such as dietary oils. Furthermore, the dispersion may comprise cosmetic active agents such as those for obtaining a skin-tensioning effect, for caring for the body, the face and the hair, for protecting against ultraviolet (UV), or for making up the face, the lips, the eyelashes, the eyebrows

and the hair. Said dispersion may notably be intended for care and/or makeup, notably for making up the lips.

[0019] Another aim of the present invention is to provide a composition for treating keratin fibres, notably human keratin fibres such as the hair, the eyelashes or the eyebrows, which has good resistance to attacking factors such as brushing, does not leach, is resistant to sweat, sebum, light and bad weather, and is persistent with respect to shampoo washing and to the various attacking factors to which said fibres may be subjected, without degrading said fibres, and while keeping the keratin fibres perfectly individualized. On the other hand the odour of the particles must be as neutral as possible to avoid all problem connected with masking a strong odour because of the presence of said particles in a cosmetic formulation.

[0020] The technical problem has been solved by using an oily dispersion (A) for treating keratin materials, notably human keratin materials such as the hair, the eyelashes or the skin, in which the oily dispersion (A) is preferably anhydrous, and comprises:

i) one or more particles including one or more polymers chosen from:

a) ethylenic homopolymers of (CrC4)alkyl (Ci-C4)(alkyl)acrylate, preferably (Ci-C4)alkyl (meth)acrylate;

b) ethylenic copolymers of b1) (CrC4)alkyl (Ci-C4)(alkyl)acrylate, and of b2) ethylenic monomers comprising one or more carboxyl, anhydride, phosphoric acid, sulfonic acid and/or aryl groups such as benzyl; in particular, b2) is a (Ci-C4)(alkyl)acrylic acid, more particularly copolymers of (CrC4)alkyl (meth)acrylate and of (meth)acrylic acid;

c) ethylenic homopolymers of (CrC4)alkyl (Ci-C4)(alkyl)acrylate, preferably (Ci-C4)alkyl (meth)acrylate; and

ii) one or more polymeric stabilizers chosen from:

d) ethylenic homopolymers of (Cg-C22)alkyl (Ci-C6)(alkyl)acrylate, preferably (Cg-C22)alkyl (meth)acrylate ethylenic homopolymers; and

e) ethylenic copolymers of (Cg-C22)alkyl (Ci-C6)(alkyl)acrylate and of (CrC4)alkyl (Ci-C4)(alkyl)acrylate, preferably copolymers of (Cg-C22)alkyl (meth)acrylate and of (Ci-C4)alkyl (meth)acrylate;

iii) one or more hydrocarbon-based liquid fatty substances; and

iv) optionally one or more cosmetic active agents chosen from f) dyes, g) pigments; h) active agents for caring for keratin materials, notably the skin, and j) UV (A) and/or (B) screening agents, and m) mixtures thereof.

[0021] More particularly, the subject of the invention relates to the use of the oily dispersion (A) as defined previously for treating keratin materials, notably human keratin materials such as the hair, the eyelashes, the eyebrows or the skin, preferably for dyeing keratin fibres and/or for shaping keratin fibres such as the hair, or for making up the skin.

[0022] A subject of the invention is also the oily dispersion (A) as defined previously, and also a process for treating keratin materials, notably human keratin materials such as the hair, the eyelashes, the eyebrows or the skin, comprising the application to said fibres of the oily dispersion (A) as defined previously. A subject of the invention is also a kit or device comprising several compartments comprising the ingredients i) to iv) as defined previously.

[0023] The oily dispersion (A) and the process for treating keratin materials as defined above make it possible to obtain a treatment for said materials which is notably resistant to shampoo washing, to sebum, to sweat and/or to water, but also to fatty substances, notably dietary fatty substances such as oils. Furthermore, the dispersion is easy to use in compositions, notably cosmetic compositions, is easy to manufacture and remains stable over time. Specifically, the oily dispersion (A) in accordance with the present invention makes it possible to obtain deposits that are very resistant to external attacking factors, notably to sebum and to the fatty substances found in food, in particular liquid fatty substances such as plant oils and in particular olive oil. It appears that the makeup produced with at least one oily dispersion (A), notably lip makeup, is particularly resistant to external attacking factors such as liquid fatty substances, in particular with respect to plant oils such as olive oil. Furthermore, the makeup results obtained with the oily dispersions (A) are very aesthetic and glossy. Furthermore, these dispersions of polymer particles are found at a high solids content in the hydrocarbon-based liquid fatty substance(s) iii). It appears that the application of the oily dispersions (A) of the invention to keratin fibres makes it possible to obtain coatings that are persistent with respect to external attacking factors (sunlight, water, shampoo washing, perspiration, sebum, etc.).

[0024] In addition, when the composition comprises one or more dyes and/or pigments, the coloured keratin materials have a colouring that is visible on all types of materials, notably on dark keratin materials, in a persistent manner with respect to soaps, shower gels or shampoos, while at the same time preserving the physical qualities of the keratin material. Such a coating is, in particular, resistant to the external attacking factors to which the keratin fibres, notably the hair, may be subjected, such as blow-drying and perspiration. The use of the oily dispersion (A) on keratin materials, in particular on keratin fibres, makes it possible to obtain a smooth, homogeneous deposit. Moreover, it has been observed, surprisingly, that the keratin fibres remain perfectly individualized, and can be styled without any problem.

[0025] For the purposes of the present invention and unless otherwise indicated:

- an“alkyl radical·’ is a linear or branched saturated CrCs, in particular C1-C6, preferably Ci- C4 hydrocarbon-based group such as methyl, ethyl, isopropyl and tert-butyl;

- a“(C9-C22)alkyF’ radical is a saturated C9-C22, in particular C10-C20, preferentially C12-C18 and more preferentially C12-C16, linear or branched hydrocarbon-based group, such as stearyl, behenyl, isodecyl, lauryl, hexadecyl or myristyl; preferably a“(C9-C22)aikyf’ or Cg-C22, in particular C10-C20, preferentially C12-C18 and more preferentially C12-C16 groups are linear;

- an“alkylene radicaf’ is a linear or branched divalent saturated CrCe, in particular CrCe, preferably C1-C4 hydrocarbon-based group such as methylene, ethylene or propylene;

- a“cycloalkyf’ radical is a saturated cyclic hydrocarbon-based group comprising from 1 to 3 rings, preferably 2 rings, and comprising from 3 to 13 carbon atoms, preferably between 5 and 10 carbon atoms, such as cyclopentyl, cyclohexyl, cycloheptyl, norbornyl, or isobornyl, the cycloalkyl radical possibly being substituted with one or more (CrC4)alkyl groups such as methyl; preferably, the cycloalkyl group is an isobornyl group.

- a “cyclic" radical is a cyclic saturated or unsaturated, aromatic or non-aromatic hydrocarbon-based group comprising from 1 to 3 rings, preferably 1 ring, and comprising from 3 to 10 carbon atoms, such as cyclohexyl or phenyl;

- an“aryk radical is a cyclic unsaturated aromatic radical comprising from 6 to 12 carbon atoms, which is mono- or bicyclic, fused or unfused; preferably, the aryl group comprises 1 ring and to 6 carbon atoms, such as phenyl;

- an“a/y/oxy” radical is an aryl-oxy, i.e. aryl-O-, radical, with aryl as defined previously, preferably phenoxy;

- an“ aryl(Ci-C4)alkox y” radical is an aryl-(Ci-C4)alkyl-0-, radical, preferably benzoxy;

- the term“keratin fibres" particularly means human skin (keratinized epithelium) and human keratin fibres such as head hair, the eyelashes, the eyebrows, and bodily hair, preferentially head hair, the eyebrows and the eyelashes, even more preferentially head hair;

- the term“individualized’ keratin fibres means keratin fibres, notably the hair, which, after application of the composition and drying, are not stuck together (or of which all the strands are separated from each other) and thus do not form clumps of fibres;

- the term “insoluble monomer” thus means any monomer whose homopolymer or copolymer is not in soluble form, i.e. completely dissolved to a concentration of greater than 5% by weight at room temperature (20°C) in said medium. However, the insoluble monomers may, as monomers, be soluble or insoluble in the hydrocarbon-based liquid fatty substance(s) iii), it being understood that they become insoluble after polymerization in the hydrocarbon-based liquid(s) iii);

- the term“ethylenic homopolymer” means a polymer derived from the polymerization of identical monomers;

- the term “ethylenic copolymer” means a polymer derived from the polymerization of different monomers, in particular at least two different monomers. Preferably, the ethylenic copolymer of the invention is derived from two or three different monomers, more preferentially derived from two different monomers;

- the term “ethylenic monomer” means an organic compound including one or more conjugated or non-conjugated unsaturations of the type >C=C<, which are capable of polymerizing;

- the term“soluble monomer” means any monomer whose homopolymer or copolymer, preferably homopolymer, is soluble to at least 5% by weight, at 20°C, in the hydrocarbon-based liquid fatty substance(s) iii) of the dispersion. The homopolymer is completely dissolved in the carbon-based liquid(s) iii), visually at 20°C, i.e. there is no visible sign of any deposit, or precipitate, or agglomerate, or insoluble sediment. However, the soluble monomers may, as monomers, be soluble or insoluble in the carbon-based liquid fatty substance(s) iii), it being understood that they become soluble after polymerization in the hydrocarbon-based liquid(s) iii);

- the term “fatty substance” means an organic compound that is insoluble in water at ordinary room temperature (25°C) and at atmospheric pressure (760 mmHg) (solubility of less than 5%, preferably 1 % and even more preferentially 0.1 %). They bear in their structure at least one hydrocarbon-based chain including at least 6 carbon atoms or a sequence of at least two siloxane groups. In addition, the fatty substances are generally soluble in organic solvents under the same temperature and pressure conditions, for instance chloroform, ethanol, benzene, liquid petroleum jelly or decamethylcyclopentasiloxane. These fatty substances are neither polyoxyethylenated nor polyglycerolated. They are different from fatty acids, since salified fatty acids constitute soaps that are generally soluble in aqueous media;

- the term“liquid’ fatty substance notably means a fatty substance that is liquid at 25°C and 1 atmosphere; preferably, said fatty substance has a viscosity of less than or equal to 7000 centipoises at 20°C;

- the term“hydrocarbon-based' fatty substance means a fatty substance which comprises at least 50% by weight, notably from 50% to 100% by weight, for example from 60% to 99% by weight, or from 65% to 95% by weight, or even from 70% to 90% by weight, relative to the total weight of said fatty substance, of carbon-based compound which is liquid at 25°C, having a global solubility parameter according to the Hansen solubility space of less than or equal to 20 (MPa)1/2, or a mixture of such compounds;

- the global solubility parameter d according to the Hansen solubility space is defined in the article“Solubility parameter values” by Grulke in the book“Polymer Handbook”, 3rd Edition, Chapter VII, pages 519-559, by the relationship d = ( do2 + dp2 + dpi2)1/2 in which: - do characterizes the London dispersion forces arising from the formation of dipoles induced during molecular impacts, - dp characterizes the Debye interaction forces between permanent dipoles, - dpi H characterizes the forces of specific interactions (such as hydrogen bonding, acid/base, donor/acceptor, etc.); The definition of solvents in the Hansen three-dimensional solubility space is described in the article by Hansen: The three-dimensional solubility parameters, J. Paint Technol. 39, 105 (1967);

- the term "o/7" means a fatty substance that is liquid at room temperature (25°C) and at atmospheric pressure;

- the term“hydrocarbon-based oit means an oil formed essentially from, or even constituted of, carbon and hydrogen atoms, and optionally oxygen and nitrogen atoms, and not containing any silicon or fluorine atoms. It may contain hydroxy, ester, ether, carboxylic acid, amine and/or amide groups;

- the term " volatile oit means an oil (or non-aqueous medium) that can evaporate on contact with keratin materials in less than one hour, at room temperature and at atmospheric pressure. The volatile oil is a volatile cosmetic oil, which is liquid at room temperature, notably having a non-zero vapour pressure, at room temperature and at atmospheric pressure, in particular having a vapour pressure ranging from 0.13 Pa to 40 000 Pa (10 3 to 300 mmHg), preferably ranging from 1.3 Pa to 13 000 Pa (0.01 to 100 mmHg) and preferentially ranging from 1.3 Pa to 1300 Pa (0.01 to 10 mmHg);

- the term“non-volatile oif’ means an oil with a vapour pressure of less than 0.13 Pa at room temperature and at atmospheric pressure;

- the term " silicone oit means an oil comprising at least one silicon atom and notably at least one Si-0 group. The silicone oil may be volatile or non-volatile;

- the term "dispersant" refers to a compound which can protect the dispersed particles from agglomerating or flocculating. This dispersant may be a surfactant, an oligomer, a polymer or a mixture of several thereof, bearing one or more functionalities with strong affinity for the surface of the particles to be dispersed; in particular, they can attach physically or chemically to the surface of the pigments. These dispersants also contain at least one functional group that is compatible with or soluble in the continuous medium. Said agent may be charged: it may be anionic, cationic, zwitterionic or neutral;

- the term“pigment refers to any pigment that gives colour to keratin materials, of synthetic or natural origin, the solubility of the pigments in water at 25°C and at atmospheric pressure (760 mmHg) being less than 0.05% by weight and preferably less than 0.01 %;

- the term "lake" refers to dyes adsorbed onto insoluble particles, the assembly thus obtained remaining insoluble during use. The inorganic substrates onto which the dyes are adsorbed are, for example, alumina, silica, calcium sodium borosilicate, calcium aluminium borosilicate and aluminium. Among the organic dyes, mention may be made of cochineal carmine.

The term“hair dyes" refers to the oxidation dyes and direct dyes used for dyeing keratin fibres, notably human keratin fibres such as the hair.

- the term "anhydrous" dispersion or composition means a dispersion or composition containing less than 2% by weight of water, or even less than 0.5% of water, and notably free of water; where appropriate, such small amounts of water may notably be provided by ingredients of the composition which may contain residual amounts;

- the term“pigments with special effects" refers to pigments that generally create a coloured appearance (characterized by a certain shade, a certain vivacity and a certain level of luminance) that is non-uniform and that changes as a function of the conditions of observation (light, temperature, angles of observation, etc.). They thereby differ from white or coloured pigments that afford a standard uniform opaque, semi-transparent or transparent shade; and

- the term“ submicron” or“submicronic” refers to pigments having a particle size that has been micronized by a micronization method and having a mean particle size of less than a micrometre (pm), in particular between 0.1 and 0.9 pm, and preferably between 0.2 and 0.6 pm.

[0026] The oily dispersion (A)

[0027] The oily dispersion (A) of the invention comprises i) one or more particles of at least one polymer surface-stabilized with ii) at least one stabilizer in a preferably anhydrous medium, also containing iii) at least one hydrocarbon-based liquid fatty substance.

[0028] In order to obtain such a dispersion (A), it is proposed to polymerize particular monomers that are capable of forming the polymeric core i) in the presence of a polymeric statistical stabilizer ii) comprising in major amount a part ii) that is soluble and in minor amount a part i) that is insoluble in the dispersion medium, i.e. in the hydrocarbon-based liquid fatty substance(s).

[0029] The dispersions according to the invention thus consist of particles, which are generally spherical, and of at least one surface-stabilized polymer, in an anhydrous medium.

Preferably, said particles i) are not or are sparingly crosslinked.

[0030] Polymer particles i)

[0031] The particle(s) of the oily dispersion (A) of the invention preferably consist of one or more polymers chosen from:

a) ethylenic homopolymers of (CrC4)alkyl (Ci-C4)(alkyl)acrylate, preferably (CrC4)alkyl (meth)acrylate ethylenic homopolymers;

b) ethylenic copolymers of (CrC4)alkyl (Ci-C4)(alkyl)acrylate, preferably (CrC4)alkyl (meth)acrylate, and of (Ci-C4)(alkyl)acrylic acid, preferably (meth)acrylic acid ethylenic copolymers;

c) ethylenic copolymers of (CrC4)alkyl (Ci-C4)(alkyl)acrylate, preferably (CrC4)alkyl (meth)acrylate ethylenic copolymers; and

[0032] Preferably, the particle(s) i) consist of an ethylenic polymeric core derived from homopolymers a) or copolymers b) or c) as defined previously.

[0033] According to a preferred embodiment of the invention, the polymer constituting the particles i) is an ethylenic acrylate homopolymer a) resulting from the polymerization of an identical monomer of formula (I):

[Chem 1]

H2C=C(R)-C(0)-0-R’ (i)

in which formula (I):

- R represents a hydrogen atom or a (CrC4)alkyl group such as methyl, and

- R’ represents a (CrC4)alkyl group such as methyl or ethyl,

preferably monomer of formula (I) is a C1-C4 alkyl acrylate such as methyl acrylate.

[0034] According to a particular embodiment of the invention, the polymer constituting the particles i) is an ethylenic acrylate copolymer b) resulting from the polymerization:

- of at least one monomer of formula (I) as defined previously, preferably a C1-C4 alkyl acrylate such as methyl acrylate and ethyl acrylate; and

- of a monomer of formula (II)

[Chem 2]

in which formula (II) R is as defined previously, in particular monomer of formula (II) is acrylic acid.

[0035] According to this embodiment, the amount of acrylic acid ranges from 0.1 % to 15% by weight relative to the weight of monomers of the particle i) and the polymer of the particles i) is in particular a copolymer derived from the copolymerization of acrylic acid with one or more C1-C4 alkyl (meth)acrylate monomers chosen in particular from methyl (meth) acrylate and ethyl (meth)acrylate.

[0036] According to another preferred embodiment of the invention, the polymer constituting the particles i) is an ethylenic acrylate copolymer b) derived from the polymerization:

- of at least two different monomers: of formula (I) as defined previously, preferably a Ci-C4 alkyl acrylate such as methyl acrylate and ethyl acrylate; and

- optionally of a monomer of formula (II) as defined previously.

[0037] According to a particular embodiment of the invention, the polymer of the particles i) is a polymer derived from C1-C4 alkyl (meth)acrylate monomers. The monomers are

preferably chosen from methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate and tert-butyl (meth)acrylate, and more preferentially chosen from methyl (meth)acrylate and ethyl (meth)acrylate.

[0038] Advantageously, a C1-C4 alkyl acrylate monomer is used. Preferentially, the monomers are chosen from methyl acrylate and ethyl acrylate.

[0039] A C1-C4 alkyl methacrylate monomer is also particularly used. Preferentially, the monomers are chosen from methyl methacrylate and ethyl methacrylate, more particularly methyl methacrylate.

[0040] According to a particular embodiment of the invention, the oily dispersion (A) includes from 2% to 40% by weight, in particular 4% to 25%, notably from 5% to 20% by weight of (Cg-C22)alkyl (Ci-C6)(alkyl)acrylate monomers included in d) or e) in the hydrocarbon-based liquid fatty substance(s) iii), relative to the total weight of polymers contained in said dispersion.

[0041] According to an advantageous embodiment of the invention, the oily dispersion (A) includes from 60% to 98% by weight, notably from 75% to 96% of monomers a) to c) relative to the total weight of polymers contained in said dispersion.

[0042] Preferably, the monomers that are capable of forming the polymeric core of the particle i) are chosen from monomers that are insoluble in the hydrocarbon-based liquid fatty substance(s) iii) of the dispersion (A). The insoluble monomers preferably represent 100% by weight, relative to the total weight of the monomers forming the polymeric core of the particle.

[0043] According to one embodiment of the invention, the particles i) include b) ethylenic copolymers of b1) (CrC4)alkyl (Ci-C4)(alkyl)acrylate and of b2) ethylenic monomers comprising one or more carboxyl, anhydride, phosphoric acid, sulfonic acid and/or aryl groups such as benzyl.

[0044] More particularly, the ethylenic monomers comprising one or more carboxyl, anhydride, phosphoric acid, sulfonic acid and/or aryl groups are chosen from (1 ), (2), (3), (4) and (5):

(1 ) R1(R2)C=C(R3)-Acid with R1 , R2 and R3 representing a hydrogen atom or a CO2H, H2PO4 or SO3H group, and Acid representing a carboxyl, phosphoric acid or sulfonic acid, preferably carboxyl, it being understood that R1 , R2 and R3 cannot simultaneously represent a hydrogen atom;

(2) H2C=C(R)-C(0)-N(R')-Alk-Acid with R and R', which may be identical or different, representing a hydrogen atom or a (CrC4)alkyl group; Aik represents a (Ci-Ce)alkylene group optionally substituted with at least one group chosen from Acid as defined previously and hydroxyl; and Acid is as defined previously, preferably carboxyl or sulfonic acid;

(3) Ar-(Ra)C=C(Rb)-Rc with Ra, Rb and Rc, which may be identical or different, representing a hydrogen atom or a (CrC4)alkyl group, and Ar representing an aryl group, preferably benzyl, optionally substituted with at least one acid group CO2H, H2PO4, or SO3H, preferably substituted with a CO2H or SO3H group,

(4) maleic anhydride of formulae (4a) and (4b):

[Chem. 3]

in which formulae (4a) and (4b) Ra, Rb and Rc, which may be identical or different, represent a hydrogen atom or a (CrC4)alkyl group; preferably, Ra, Rb, and Rc represent a hydrogen atom. Preferentially, the ethylenically unsaturated anhydride monomer of the invention is of formula (4b) and more preferentially is maleic anhydride; and

(5) H2C=C(R)-C(0)-0-H with R representing a hydrogen atom or a (CrC4)alkyl group such as methyl.

[0045] Preferably, b2) is a (Ci-C4)(alkyl)acrylic acid, more particularly b) is (are) copolymers of (CrC4)alkyl (meth)acrylate and of (meth)acrylic acid.

[0046] More preferentially, b2) is chosen from crotonic acid, maleic acid, itaconic acid, fumaric acid, styrenesulfonic acid, vinylbenzoic acid, vinylphosphoric acid, acrylic acid, methacrylic acid, acrylamidopropanesulfonic acid, acrylamidoglycolic acid and salts thereof; even more preferentially, b2) represents acrylic acid.

[0047] The polymer particles i) of the dispersion (A) preferably have a number-mean size ranging from 5 to 500 nm, notably ranging from 10 to 400 nm and better still ranging from 20 to 300 nm.

[0048] The final particle size is preferably greater than 100 nm. In particular, the number-mean size ranges from 100 nm to 500 nm, more particularly ranges from 150 nm to 400 nm and even more particularly ranges from 160 nm to 300 nm.

[0049] The mean particle size is determined via standard methods known to those skilled in the art. A Malvern brand NanoZS model laser particle size analyser (which is particularly suitable for submicron dispersions) makes it possible to measure the size distribution of these samples. The operating principle of this type of machine is based on dynamic light scattering (DLS), also known as quasi-elastic light scattering (QELS) or photon correlation spectroscopy (PCS).

[0050] The sample is projected into a disposable plastic cuvette (four transparent faces, side length of 1 cm and volume of 4 ml_) placed in the measuring cell. The data are analysed on the basis of a cumulative method which leads to a unimodal particle size distribution characterized by an intensity-mean diameter d(nm) and a size polydispersity factor Q. The results may also be expressed in the form of statistical data such as D10; D50 (median), D90 and mode.

[0051] Other particle size techniques make it possible to obtain this type of information, such as analysis of the individual tracking of particles (Nanoparticle Tracking Analysis, NTA), laser scattering (LS), acoustic extinction spectroscopy (AES), spatial-filter Doppler velocimetry or image analysis.

[0052] The stabilizer(s) ii)

[0053] The dispersion (A) according to the invention also comprises one or more stabilizers ii). Preferably, a single type of stabilizer ii) is used in the invention.

[0054] According to a particular embodiment of the invention, the stabilizer(s) ii) are chosen from d) ethylenic homopolymers of (Cg-C22)alkyl (Ci-C6)(alkyl)acrylate, in particular ethylenic homopolymers of (Cg-Ci8)alkyl (Ci-C4)(alkyl)acrylate, preferably ethylenic homopolymers of (Cg-C22)alkyl (meth)acrylate and more preferentially ethylenic homopolymers of (Cg-Cis)alkyl (meth)acrylate. Particularly the (Cg-C22)alkyl or the (Cg-Cis)alkyl groups are linear. According to another variant of the invention the (Cg-C22)alkyl or the (Cg-Cis)alkyl groups are branched.

[0055] More particularly, the stabilizer(s) ii) consist of ethylenic polymers chosen from d) ethylenic homopolymers resulting from the polymerization of monomers of formula H2C=C(R)-C(0)-0-R" with R representing a hydrogen atom or a (CrC4)alkyl group such as methyl, and R" representing a (Cg-C22)alkyl and preferably (Cg-Cis)alkyl group. Preferably, R" represents isodecyl, lauryl, stearyl, hexadecyl or behenyl. According one embodiment of the invention R” represents a linear (Cg-C22)alkyl and preferably a linear (Cg-Cis)alkyl group.

[0056] According to another particular embodiment of the invention, the stabilizer(s) ii) are chosen from e) ethylenic copolymers of (Cg-C22)alkyl (Ci-C6)(alkyl)acrylate and of (Ci-C4)alkyl (Ci-C4)(alkyl)acrylate, particularly copolymers of (Cg-Cis)alkyl (Ci-C4)(alkyl)acrylate and of (CrC4)alkyl (Ci-C4)(alkyl)acrylate, preferably copolymers of (Cg-Cis)alkyl (meth) acrylate and of (CrC4)alkyl (meth)acrylate.

[0057] More preferentially, the stabilizer(s) ii) are chosen from the ethylenic copolymers e) of formulae (III) and (IV):

[Chem 4]

H2€=C(R)-C(0 -0-R’ (III)

[Chem 5]

H2C=C(R)-C(0)-Q-R” (IV)

in which formulae (III) and (IV):

- R, which may be identical or different, represent a hydrogen atom or a (CrC4)alkyl group such as methyl,

- R’, which may be identical or different, represent a (CrC4)alkyl group such as methyl or ethyl, and

- R" represents a (Cg-C22)alkyl, preferably (Cio-C2o)alkyl and in particular (C2n)alkyl group with n being an integer equal to 5, 6, 7, 8, 9 or 10. Preferably, R" represents isodecyl, lauryl, stearyl, hexadecyl or behenyl.

[0058] Preferentially, the stabilizer(s) ii) are chosen from copolymers derived from monomers chosen from isodecyl, lauryl, stearyl, hexadecyl and behenyl (meth)acrylates and C1 -C4 alkyl (meth)acrylate, preferably methyl (meth)acrylate.

[0059] More preferentially, the stabilizer(s) ii) are chosen from copolymers derived from monomers chosen from isodecyl, lauryl, stearyl and hexadecyl (meth)acrylates and C1 -C4 alkyl (meth)acrylate, preferably methyl (meth)acrylate or ethyl (meth)acrylate.

[0060] In particular, the stabilizer ii) is chosen from isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylate homopolymer and statistical copolymers of isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylate and of C1-C4 alkyl (meth)acrylate preferably present in a lauryl, stearyl, hexadecyl or behenyl (meth)acrylate/Ci-C4 alkyl (meth)acrylate weight ratio of greater than 4.5.

[0061] Advantageously, said weight ratio ranges from 5 to 15 and more preferentially said weight ratio ranges from 5.5 to 12.

[0062] According to another embodiment, the stabilizer(s) ii) are chosen from ethylenic copolymers e) derived from the polymerization of a monomer of formula (IV) as defined previously and two different monomers of formula (III) as defined previously.

[0063] Preferentially, the stabilizer(s) ii) are chosen from copolymers derived from the polymerization of one monomer chosen from isodecyl, lauryl, stearyl, hexadecyl and behenyl (meth)acrylates and of two different C1-C4 alkyl (meth)acrylates, preferably methyl acrylate and ethyl acrylate. In particular, the weight ratio of isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylates/Ci-C4 alkyl (meth)acrylate is greater than 4. Advantageously, said weight ratio ranges from 5 to 15 and more preferentially said weight ratio ranges from 5.5 to 1 1.

[0064] According to another embodiment, the stabilizer(s) ii) are chosen from ethylenic copolymers e) derived from the polymerization of a monomer of formula (III) as defined in the preceding claim and two different monomers of formula (IV) as defined previously.

[0065] Preferentially, the stabilizer(s) ii) are chosen from copolymers derived from the polymerization of two different monomers chosen from isodecyl, lauryl, stearyl, hexadecyl and behenyl (meth)acrylates and of one C1 -C4 alkyl (meth)acrylate monomer, preferably

methyl acrylate and ethyl acrylate; in particular, the weight ratio of isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylates/Ci-C4 alkyl (meth)acrylate is greater than 4.

[0066] Advantageously, said weight ratio ranges from 4.5 to 10 and more preferentially said weight ratio ranges from 5 to 8.

[0067] According to a particular embodiment of the invention, the oily dispersion (A) includes from 2% to 40% by weight, in particular 4% to 25%, notably from 5.5% to 20% by weight of (Cg-C22)alkyl (Ci-C6)(alkyl)acrylate monomers included in d) or e) in the hydrocarbon-based liquid fatty substance(s) iii), relative to the total weight of polymers contained in said dispersion.

[0068] According to one embodiment of the invention, the stabilizer(s) ii) are chosen from copolymers derived from the polymerization of two different monomers chosen from isodecyl, lauryl, stearyl, hexadecyl and behenyl (meth)acrylates and of one C1-C4 alkyl (meth)acrylate monomer, preferably methyl acrylate and ethyl acrylate; in particular, the weight ratio of isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylates/Ci-C4 alkyl (meth)acrylate in the dispersion (A) is less than 1. Particularly, said weight ratio ranges from 0.05 to 0.5 and more preferentially said weight ratio ranges from 0.08 to 0.2 in the dispersion (A).

[0069] For these statistical copolymers, the defined weight ratio makes it possible to obtain a polymer dispersion that is stable, notably after storage for seven days at room temperature.

[0070] Advantageously, the weight ratio of ii) stabilizer(s) and i) of polymer particle(s) present in the dispersion (A) is between 0.5 and 2, preferably 1.

[0071] In particular, the weight ratio of ii) stabilizer(s) and i) polymer particle(s) is less than 1 , relative to the total weight of polymers.

[0072] According to a particular embodiment of the invention, the stabilizer(s) ii) are present in a content ranging from 2% to 40% by weight, notably from 3% to 30% by weight and preferably from 4% to 25% by weight relative to the weight of polymer(s) present in the dispersion (A).

[0073] Preferably, the stabilizer(s) ii) and the particle(s) i) have a number-average molecular weight (Mn) of between 1000 and 1 000 000 g/mol, notably between 5000 and 500 000 g/mol and even better still between 10 000 and 300 000 g/mol.

[0074] The dispersion (A) according to the invention is finally formed from polymeric particles of relatively large diameter, i.e. preferably greater than 100 nm, and leads to glossy, film-forming deposits which are resistant to fatty substances at room temperature (25°C), which are advantageously notably for makeup applications.

[0075] The hydrocarbon-based liquid fatty substance(s) Hi)

[0076] The dispersion of polymer particles (A) according to the invention also comprises iii) one or more hydrocarbon-based liquid fatty substances in which said particles are dispersed.

[0077] The hydrocarbon-based liquid fatty substances iii) are notably chosen from C6-Ci6 hydrocarbons or hydrocarbons comprising more than 16 carbon atoms and up to 60 carbon atoms, preferably between C6 and Cie, and in particular alkanes, oils of animal origin, oils of plant origin, glycerides or fluoro oils of synthetic origin, fatty alcohols, fatty acid and/or fatty alcohol esters, non-silicone waxes, and silicones.

[0078] It is recalled that, for the purposes of the invention, the fatty alcohols, fatty esters and fatty acids more particularly contain one or more linear or branched, saturated or unsaturated hydrocarbon-based groups comprising 6 to 60 carbon atoms, which are optionally substituted, in particular with one or more (in particular 1 to 4) hydroxyl groups. If they are unsaturated, these compounds may comprise one to three conjugated or unconjugated carbon-carbon double bonds.

[0079] As regards the C6-C16 alkanes, they are linear or branched, and possibly cyclic. Examples that may be mentioned include hexane, dodecane and isoparaffins such as isohexadecane, isodecane and isododecane. The linear or branched hydrocarbons containing more than 16 carbon atoms may be chosen from liquid paraffins, petroleum jelly, liquid petroleum jelly, polydecenes, and hydrogenated polyisobutene such as Parleam®.

[0080] Among the hydrocarbon-based liquid fatty substances iii) having a global solubility parameter according to the Hansen solubility space of less than or equal to 20 (MPa)1/2, mention may be made of oils, which may be chosen from natural or synthetic, hydrocarbon-based, optionally fluorinated, optionally branched oils, alone or as a mixture.

[0081] According to a very advantageous embodiment, the dispersion (A) according to the invention comprises one or more liquid fatty substances which are one or more hydrocarbon-based oils. The hydrocarbon-based oil(s) may be volatile or non-volatile.

[0082] According to a preferred embodiment of the invention, the liquid hydrocarbon-based oil(s) are hydrocarbon-based oils which are volatile or are a mixture of different volatile oils, more preferentially chosen from isododecane and octyldodecanol.

[0083] According to another particular embodiment, the liquid hydrocarbon-based fatty substance(s) iii) are a mixture of a volatile oil and of a non-volatile oil.

[0084] Volatile silicone oils that may be mentioned include volatile linear or cyclic silicone oils, notably those with a viscosity < 8 centistokes (cSt) (8 c 106 m2/s), and notably containing from 2 to 10 silicon atoms and in particular from 2 to 7 silicon atoms, these silicones optionally including alkyl or alkoxy groups containing from 1 to 10 carbon atoms. As volatile silicone oils that may be used in the invention, mention may notably be made of dimethicones with viscosities of 5 and 6 cSt, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane,

octamethyltrisiloxane, decamethyltetrasiloxane and dodecamethylpentasiloxane, and mixtures thereof.

[0085] As non-volatile silicone oils, mention may be made of linear or cyclic non-volatile polydimethylsiloxanes (PDMSs); polydimethylsiloxanes including alkyl, alkoxy and/or phenyl groups, which are pendent or at the end of a silicone chain, these groups containing from 2 to 24 carbon atoms; phenyl silicones, for instance phenyl trimethicones, phenyl dimethicones, phenyltrimethylsiloxydiphenylsiloxanes, diphenyl dimethicones, diphenylmethyldiphenyltrisiloxanes and 2-phenylethyl trimethylsiloxysilicates and pentaphenyl silicone oils.

[0086] The hydrocarbon-based oil may be chosen from:

- hydrocarbon-based oils containing from 8 to 14 carbon atoms, and notably:

- branched CS-CM alkanes, for instance CS-CM isoalkanes of petroleum origin (also known as isoparaffins), for instance isododecane (also known as 2,2,4,4,6-pentamethylheptane), isodecane and, for example, the oils sold under the trade names Isopar or Permethyl,

- linear alkanes, for instance n-dodecane (C12) and n-tetradecane (C14) sold by Sasol under the respective references Parafol 12-97 and Parafol 14-97, and also mixtures thereof, the undecane-tridecane mixture, the mixtures of n-undecane (C11) and of n-tridecane (C13) obtained in examples 1 and 2 of patent application WO 2008/155059 from the company Cognis, and mixtures thereof,

- short-chain esters (containing from 3 to 8 carbon atoms in total) such as ethyl acetate, methyl acetate, propyl acetate or n-butyl acetate,

- hydrocarbon-based oils of plant origin such as triglycerides consisting of fatty acid esters of glycerol, the fatty acids of which may have chain lengths ranging from C4 to C24, these chains possibly being linear or branched, and saturated or unsaturated; these oils are notably heptanoic acid or octanoic acid triglycerides, or alternatively wheatgerm oil, sunflower oil, grapeseed oil, sesame seed oil, corn oil, apricot oil, castor oil, shea oil, avocado oil, olive oil, soybean oil, sweet almond oil, palm oil, rapeseed oil, cotton oil, hazelnut oil, macadamia oil, jojoba oil, alfalfa oil, poppy oil, pumpkin oil, marrow oil, blackcurrant oil, evening primrose oil, millet oil, barley oil, quinoa oil, rye oil, safflower oil, candlenut oil, passion flower oil or musk rose oil; shea butter; or else caprylic/capric acid triglycerides, for instance those sold by the company Stearinerie Dubois or those sold under the names Miglyol 810®, 812® and 818® by the company Dynamit Nobel,

- synthetic ethers containing from 10 to 40 carbon atoms,

- linear or branched hydrocarbons of mineral or synthetic origin, such as petroleum jelly, polydecenes, hydrogenated polyisobutene such as Parleam®, squalane and liquid paraffins, and mixtures thereof;

- esters such as oils of formula R1C(0)-0-R2 in which R1 represents a linear or branched fatty acid residue including from 1 to 40 carbon atoms and R2 represents an, in particular branched, hydrocarbon-based chain containing from 1 to 40 carbon atoms, on the condition

that R1 + R2 > 10, for instance purcellin oil (cetostearyl octanoate), isopropyl myristate, isopropyl palmitate, C12 to C15 alkyl benzoates, hexyl laurate, diisopropyl adipate, isononyl isononanoate, 2-ethylhexyl palmitate, isostearyl isostearate, 2-hexyldecyl laurate, 2-octyldecyl palmitate, 2-octyldodecyl myristate, alkyl or polyalkyl heptanoates, octanoates, decanoates or ricinoleates such as propylene glycol dioctanoate; hydroxylated esters such as isostearyl lactate, diisostearyl malate and 2-octyldodecyl lactate; polyol esters and pentaerythritol esters,

- fatty alcohols that are liquid at room temperature, with a branched and/or unsaturated carbon-based chain containing from 12 to 26 carbon atoms, for instance octyldodecanol, isostearyl alcohol, oleyl alcohol, 2-hexyldecanol, 2-butyloctanol and 2-undecylpentadecanol.

[0087] The dispersion (A), in addition to the liquid hydrocarbon-based fatty substance, may comprise a silicone oil. If the silicone oil is in the dispersion (A), it is preferably in an amount which does not exceed 10% by weight relative to the weight of the dispersion (A), more particularly in an amount of less than 5% and preferentially 2%.

[0088] In particular, the dispersion (A) comprises at least one liquid hydrocarbon-based fatty substance iii) chosen from:

- plant oils formed by fatty acid esters of polyols, in particular triglycerides, such as sunflower oil, sesame oil, rapeseed oil, macadamia oil, soybean oil, sweet almond oil, beauty-leaf oil, palm oil, grapeseed oil, corn oil, arara oil, cottonseed oil, apricot oil, avocado oil, jojoba oil, olive oil or cereal germ oil;

- linear, branched or cyclic esters containing more than 6 carbon atoms, notably 6 to 30 carbon atoms; and notably isononyl isononanoate;

and more particularly esters of formula Rd-C(0)-0-Re in which Rd represents a higher fatty acid residue including from 7 to 19 carbon atoms and Re represents a hydrocarbon-based chain including from 3 to 20 carbon atoms, such as palmitates, adipates, myristates and benzoates, notably diisopropyl adipate and isopropyl myristate;

- hydrocarbons and notably volatile or non-volatile, linear, branched and/or cyclic alkanes, such as C5-C60 isoparaffins, which are optionally volatile, such as isododecane, Parleam (hydrogenated polyisobutene), isohexadecane, cyclohexane or isopars; or else liquid paraffins, liquid petroleum jelly, or hydrogenated polyisobutylene;

- ethers containing 6 to 30 carbon atoms;

- ketones containing 6 to 30 carbon atoms;

- aliphatic fatty monoalcohols containing 6 to 30 carbon atoms, the hydrocarbon-based chain not including any substitution groups, such as oleyl alcohol, decanol, dodecanol, octadecanol, octyldodecanol and linoleyl alcohol;

- polyols containing 6 to 30 carbon atoms, such as hexylene glycol; and

- mixtures thereof.

[0089] Preferably, the dispersion (A) comprises at least one liquid hydrocarbon-based fatty substance iii) chosen from:

- plant oils formed by fatty acid esters of polyols, in particular triglycerides,

- esters of formula Rd-C(0)-0-Re in which Rd represents a higher fatty acid residue including from 7 to 19 carbon atoms and Re represents a hydrocarbon-based chain including from 3 to 20 carbon atoms,

- volatile or non-volatile, linear or branched Cs-Ci6 alkanes,

- volatile or non-volatile, non-aromatic cyclic C5-C12 alkanes,

- ethers containing 7 to 30 carbon atoms,

- ketones containing 8 to 30 carbon atoms,

- aliphatic fatty monoalcohols containing 12 to 30 carbon atoms, the hydrocarbon-based chain not including any substitution groups, and

- mixtures thereof.

[0090] Advantageously, the liquid hydrocarbon-based fatty substance(s) of the invention are apolar, i.e. formed solely from carbon and hydrogen atoms.

[0091] The liquid hydrocarbon-based fatty substance(s) are preferably chosen from hydrocarbon-based oils containing from 8 to 14 carbon atoms, which are in particular volatile, more particularly the apolar oils described previously.

[0092] Preferentially, the liquid hydrocarbon-based fatty substance(s) iii) of the invention are isododecane.

[0093] According to another advantageous embodiment of the invention, the liquid hydrocarbon-based fatty substance(s) are a mixture of non-volatile oil and volatile oil; preferably, the mixture comprises isododecane as volatile oil. In particular, in the mixture, the non-volatile oil is a phenyl silicone oil, preferably chosen from pentaphenyl silicone oils.

[0094] Method for preparing the dispersion (A)

[0095] Without this being limiting, in general, the dispersion according to the invention may be prepared in the following manner:

- The polymerization is performed in dispersion in non-aqueous medium, i.e. by precipitation of the polymer being formed, with protection of the formed particles with one or more stabilizers ii), preferably only one type of stabilizer ii) chosen from d) and e) as defined previously.

- In a first step, the stabilizing polymer (or stabilizer ii)) is prepared by mixing the constituent monomer(s) of the stabilizing polymer d) or e) with v) a free-radical initiator, in a solvent known as the synthesis solvent, and by polymerizing these monomers; and then

- In a second step, the constituent monomer(s) of the polymer of the particles i) are added to the stabilizing polymer formed in the preceding step and polymerization of these added monomers is performed in the presence of the free-radical initiator.

[0096] When the non-aqueous medium is a non-volatile liquid hydrocarbon-based fatty substance iii), the polymerization may be performed in an apolar organic solvent (synthesis solvent), followed by adding the non-volatile liquid hydrocarbon-based fatty substance (which should be miscible with said synthesis solvent) and selectively distilling off the synthesis solvent. The cosmetic active agent(s) chosen from f) the dyes and/or pigments; g) the active agents for caring for keratin materials, notably the skin, and h) the UV-screening agents, and also j) mixtures thereof may be added during the first step. According to another variant, the cosmetic active agent(s) are added during the second step or after the second step.

[0097] A synthesis solvent which is such that the monomers of the polymeric stabilizer(s) ii) and the free-radical initiator v) are soluble therein, and such that the polymer particles i) obtained are insoluble therein, so that they precipitate therein during their formation, is thus chosen.

[0098] In particular, the synthesis solvent chosen is one which is apolar and organic, preferably chosen from alkanes such as heptane, cyclohexane or isododecane, preferably isododecane.

[0099] When the non-aqueous medium is a volatile hydrocarbon-based liquid fatty substance iii), the polymerization may be performed directly in said oil, which thus also acts as synthesis solvent. The monomers should also be soluble therein, as should the free-radical initiator, and the polymer of the particles i) which is obtained should be insoluble therein.

[00100] The monomers are preferably present in the synthesis solvent, before polymerization, in a proportion of 15% to 45% by weight. The total amount of the monomers may be present in the solvent before the start of the reaction, or part of the monomers may be added gradually as the polymerization reaction proceeds.

[00101] The polymerization is preferably performed in the presence v) of one or more radical initiators which may be any initiator known to those skilled in the art for radical polymerization, such as peroxide or azo initiators, redox couples and photochemical initiators.

[00102] Mention may notably be made of those of the following types:

peroxide, in particular chosen from tert-butyl peroxy-2-ethylhexanoate: Trigonox 21S; 2,5-dimethyl-2,5-bis(2-ethylhexanoylperoxy)hexane: Trigonox 141 ; tert-butyl peroxypivalate: Trigonox 25C75 from AkzoNobel; or

azo, in particular chosen from AIBN: azobisisobutyronitrile; V50: 2,2'-azobis(2-amidinopropane) dihydrochloride.

[00103] The polymerization is preferably performed at a temperature ranging from 70 to 1 10°C and at atmospheric pressure.

[00104] The polymer particles i) are surface-stabilized, when they are formed during the polymerization, by means of the stabilizer ii).

[00105] The stabilization may be performed by any known means, and in particular by direct addition of the stabilizer ii), during the polymerization.

[00106] The stabilizer ii) is preferably also present in the mixture before polymerization of the monomers of the polymer of the particles i). However, it is also possible to add it continuously, notably when the monomers of the particles i) are also added continuously.

[00107] From 4% to 30% by weight and preferably from 4.5% to 20% by weight of the stabilizer(s) may be used relative to the total weight of monomers used (stabilizers ii) + polymer particles i)).

[00108] The polymer particle dispersion (A) advantageously comprises from 30% to 65% by weight of solids relative to the total weight of said dispersion and preferably from 40% to 60% by weight relative to the total weight of said dispersion.

[00109] The composition according to the invention preferably comprises a solids (or active material) content of polymers of particle i) + dispersing polymers ii) ranging from 10% to 80% by weight, relative to the total weight of composition (A), preferably ranging from 20% to 60% by weight, notably 30% to 50% by weight, relative to the total weight of composition (A).

[001 10] According to a preferred embodiment of the invention, the dispersion (A) according to the invention is an anhydrous composition.

[001 11] According to another embodiment of the present invention, the dispersion (A) is in inverse emulsion, i.e. of water-in-oil (W/O) type. In this case, the composition comprises one or more surfactants, which are preferably nonionic. The inverse emulsions of (A) are preferably chosen when the dispersions (A) are intended for makeup, notably for making up the eyelashes and/or the eyebrows.

[001 12] In one particular preparation method, the statistical stabilizing polymer ii) is prepared in a first step. This stabilizing polymer is soluble in an apolar organic solvent of alkane type, such as isododecane.

[001 13] Next, in a second step, the polymer particles i) are synthesized in the presence of the stabilizing polymer ii).

[001 14] Preferentially, a solution of stabilizing polymer ii) in the liquid hydrocarbon-based fatty substance(s) iii) is prepared for the final dispersion, and the polymerization of the monomers which form the core of the particle is performed in the presence of this stabilizer ii).

[001 15] The stabilizing polymer ii) may be prepared by radical polymerization optionally in the presence of a polymerization initiator v) as defined previously.

[001 16] In a second step, the monomers which form the core of the particle i) may be polymerized in the presence of said stabilizing polymer ii). This second step may be a conventional radical polymerization.

[001 17] The dispersions are prepared in the presence of one or more liquid hydrocarbon-based fatty substances iii), preferably in an apolar organic solvent, in particular of alkane type such as isododecane, according to an industrially realistic process.

[001 18] The dispersions according to the invention are thus finally formed from polymer particles, of relatively large diameter (preferably greater than 100 nm), and give glossy film forming deposits that are resistant to fatty substances at the observation temperature (25°C).

[001 19] Furthermore, since said dispersion is in an oily medium, it becomes easy to formulate it in cosmetic compositions based on an oily medium commonly used in cosmetics, in particular anhydrous media or in the fatty phases of emulsions.

[00120] The polymer according to the invention finds a quite particular application in the cosmetic field, notably in the makeup field and notably in lipsticks, glosses (lip glosses) and eyeshadows and mascaras.

[00121] The cosmetic active agent(s) iv)

[00122] According to a particular embodiment of the invention, the dispersion (A) of the invention comprises one or more cosmetic active agents chosen from f) dyes, g) pigments; h) active agents for caring for keratin materials, and j) UV (A) and/or (B) screening agents, and also k) mixtures thereof.

[00123] According to a preferred embodiment of the present invention, the cosmetic active agent(s) of the invention are chosen from f) pigments.

[00124] According to a particular embodiment of the present invention, the cosmetic active agent(s) of the invention are chosen from h) active agents for caring for keratin materials, preferably skincare active agents.

[00125] According to a particular embodiment of the present patent application, the cosmetic active agent(s) of the invention are chosen from j) UV(A) and/or UV(B) screening agents, and a mixture thereof.

[00126] According to a particular embodiment of the invention, dispersion (A) comprises iv) one or more cosmetic active agents chosen from pigments.

[00127] The pigment(s) more particularly represent from 0.001 % to 10% by weight and preferably from 0.005% to 5% by weight relative to the total weight of the dispersion (A).

[00128] The pigments are white or coloured solid particles which are naturally insoluble in the hydrophilic and lipophilic liquid phases usually employed in cosmetics or which are rendered insoluble by formulation in the form of a lake, where appropriate. More particularly, the pigments have little or no solubility in aqueous-alcoholic media.

[00129] The pigments that may be used are notably chosen from the organic and/or mineral pigments known in the art, notably those described in Kirk-Othmer’s Encyclopedia of Chemical Technology and in Ullmann’s Encyclopedia of Industrial Chemistry. Pigments that may notably be mentioned include organic and mineral pigments such as those defined and described in Ullmann's Encyclopedia of Industrial Chemistry "Pigment organics", 2005 Wiley- VCH Verlag GmbH & Co. KGaA, Weinheim 10.1002/14356007.a20 371 and ibid, "Pigments, Inorganic, 1. General" 2009 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim 10.1002/14356007. a20_243. pub3

[00130] These pigments may be in pigment powder or paste form. They may be coated or uncoated.

[00131] The pigments may be chosen, for example, from mineral pigments, organic pigments, lakes, pigments with special effects such as nacres or glitter flakes, and mixtures thereof.

[00132] The pigment may be a mineral pigment. The term“mineral pigment” refers to any pigment that satisfies the definition in Ullmann’s encyclopedia in the chapter on inorganic pigments. Among the mineral pigments that are useful in the present invention, mention may be made of iron oxides, chromium oxides, manganese violet, ultramarine blue, chromium hydrate, ferric blue and titanium oxide.

[00133] The pigment may be an organic pigment.

[00134] The term“organic pigment” refers to any pigment that satisfies the definition in Ullmann’s encyclopedia in the chapter on organic pigments.

[00135] The organic pigment may notably be chosen from nitroso, nitro, azo, xanthene, quinoline, anthraquinone, phthalocyanine, metal complex type, isoindolinone, isoindoline, quinacridone, perinone, perylene, diketopyrrolopyrrole, thioindigo, dioxazine, triphenylmethane and quinophthalone compounds.

[00136] In particular, the white or coloured organic pigments may be chosen from carmine, carbon black, aniline black, azo yellow, quinacridone, phthalocyanine blue, the blue pigments codified in the Colour Index under the references Cl 42090, 69800, 69825, 74100, 74160, the yellow pigments codified in the Colour Index under the references Cl 11680, 11710, 19140, 20040, 21100, 21108, 47000, 47005, the green pigments codified in the Colour Index under the references Cl 61565, 61570, 74260, the orange pigments codified in the Colour Index under the references Cl 11725, 45370, 71105, the red pigments codified in the Colour Index under the references Cl 12085, 12120, 12370, 12420, 12490, 14700, 15525, 15580, 15620, 15630, 15800, 15850, 15865, 15880, 26100, 45380, 45410, 58000, 73360, 73915, 75470, the pigments obtained by oxidative polymerization of indole or phenol derivatives as described in patent FR 2 679 771.