FR2846229A1 - Fluid cosmetic composition in the form of a water-in-oil emulsion based on a volatile hydrocarbon oil includes a pigment coated with an N-alkanoyl sarcosine or sarcosinate - Google Patents

Abstract

Fluid cosmetic composition in the form of a water-in-oil emulsion based on a volatile hydrocarbon oil includes a pigment coated with an N-alkanoyl sarcosine or sodium, aluminum, magnesium, calcium, zinc, zirconium or titanium salt thereof in which the alkanoyl group has 10-20 carbon atoms.

Description

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 The invention relates to a cosmetic pigment composition of the water-in-oil emulsion type.

 The composition considered according to the invention may in particular be a composition for making up the skin and intended to be applied to the face, the neck, the eyelids, the body, as well as the lips of human beings. More specifically, it may be a foundation or a tinted cream to be applied to the face or the neck, a concealer product, an eyeshadow, a composition for making up the body, or else a lip care or makeup product such as a lipstick. More specifically, the composition is a foundation.

 These makeup products mainly contain fatty phases such as waxes and oils, pigments and / or fillers and possibly additives such as cosmetic or dermatological active ingredients.

 Generally, colored compositions, such as, for example, foundation compositions, contain a large amount of pigments to precisely give them the desired color as well as an effective camouflage effect vis-à-vis skin imperfections (spots, redness). Unfortunately, the presence of a large amount of pigments is generally detrimental to obtaining a composition stabilized over time.

 Thus, after storage for one month at room temperature (25 ° C.), or even at 37 ° C. or 45 ° C., instability generally manifests itself by the appearance of an inhomogeneous distribution of the pigments within the composition. . In addition, when the composition is packaged in a transparent container of the glass vial type, for example, a color change or even streaks of color can be seen on the wall of the bottle, making the product unattractive and unattractive for the user.

 It is clear that such a composition applied to the skin does not make it possible to obtain a makeup having a uniform color and therefore does not lead to the desired aesthetic effect.

 It is noted that these manifestations of instability are particularly exacerbated for the so-called fluid compositions such as water-in-oil emulsions, and in particular of the water-in-volatile hydrocarbon oil type such as for example water-in-isododecane.

 To overcome this problem, it is already known to use pigments coated with magnesium myristate, acrylate copolymer and dimethicone or triethoxy.

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 caprylylsilane. Unfortunately, this alternative is not satisfactory insofar as stability problems remain, in particular with the fluid compositions of the reverse emulsion type. US Patent 4,606,914 describes for its part powdery cosmetic compositions comprising pigments coated with metallic derivatives of N-acylamino acid.

 Unexpectedly, the inventors have found that it is possible to effectively stabilize pigments present in water-in-volatile hydrocarbon oil emulsions such as for example water-in-isododecane provided that these pigments are introduced in a specific form. and more particularly surface treated using a particular organic derivative.

dans laquelle : - R représente un radical alkyle, linéaire ou ramifié, saturé ou insaturé, en C9 à CI 9, notamment en Ci à C15, - M représente un atome d'hydrogène ou un ion métallique notamment choisi parmi le sodium, l'aluminium, le magnésium, le calcium, le zinc, le zirconium et le titane, et - m représente un entier variant de 1 à 4. More precisely, the present invention relates, according to one of its aspects, to a fluid cosmetic composition, in the form of a water-in-oil volatile hydrocarbon emulsion, comprising at least one pigment characterized in that said pigment is present in whole or in part in a form surface treated with at least one compound of general formula 1:

in which: - R represents an alkyl radical, linear or branched, saturated or unsaturated, in C9 to CI 9, in particular in C1 to C15, - M represents a hydrogen atom or a metal ion in particular chosen from sodium, l aluminum, magnesium, calcium, zinc, zirconium and titanium, and - m represents an integer varying from 1 to 4.

 According to another of its aspects, the invention relates to the use of pigments thus treated in a fluid cosmetic composition of the water-in-oil volatile oil emulsion type.

 According to another of its aspects, it also relates to a cosmetic process, in particular for making up and / or caring for the skin, the lips and / or the integuments comprising at least the application to the skin, the lips and / or the integuments of a composition in accordance with the invention.

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The coated pigments:
The inventors have thus found that conventional pigments treated on the surface with at least one specific organic compound manifested, when dispersed in a fluid cosmetic composition of the volatile water-in-oil emulsion type of emulsion, a significantly increased stability over time. to untreated pigments.

dans laquelle : - R représente un radical alkyle, linéaire ou ramifié, saturé ou insaturé, en C9 à C19et notamment en C11à C15, - M représente un atome d'hydrogène ou un ion métallique notamment choisi parmi le sodium, l'aluminium, le magnésium, le calcium, le zinc, le zirconium et le titane, et - m représente un entier variant de 1 à 4. This surface treatment implements at least one compound of general formula 1 as follows:

in which: - R represents an alkyl radical, linear or branched, saturated or unsaturated, in C9 to C19 and in particular in C11 to C15, - M represents a hydrogen atom or a metal ion in particular chosen from sodium, aluminum, magnesium, calcium, zinc, zirconium and titanium, and - m represents an integer varying from 1 to 4.

 As a representative and not limiting of radicals which can be figured by RCO, one can in particular quote the radicals caproyl, lauroyl, myristoyl, palmitoyl, stéoyoyl and oleoyl.

 More particularly, RCO represents a lauroyl, myristoyl, palmitoyl residue, and in particular a myristoyl residue.

 According to a particular variant of the invention, the pigment is treated with a derivative of general formula 1 in which M represents a hydrogen atom; m is then equal to 1.

 More particularly, the surface treatment comprises at least myristoyl sarcosinate or one of its salts, in particular sodium.

 As regards more particularly the pigments thus treated, they may be mineral or organic pigments.

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 As mineral pigments, it is possible to use metal oxides such as iron oxides (in particular those of yellow, red, brown, black color), titanium oxides, cerium oxide, zirconium oxide, oxide of chrome; manganese violet, blue ultramarine, prussian blue, ultramarine blue, ferric blue, bismuth oxychloride, mother-of-pearl, mica coated with titanium or bismuth oxychloride, colored pearlescent pigments such as titanium mica with iron oxides, titanium mica with ferric blue or chromium oxide, pearlescent pigments based on bismuth oxychloride, and mixtures thereof.

 As organic pigments, mention may be made of carbon black, pigments of D & C type, and lakes based on cochineal carmine, barium, strontium, calcium, aluminum and their mixtures.

 In this case, the pigments of iron oxide (s) or titanium oxide (s) are very particularly suitable for the invention.

 According to a particular variant of the invention, the surface treatment consists in coating the pigments.

 The coating can represent from 0.1 to 10%, and in particular from 1% to 5% of the total weight of the coated pigment.

 It can in particular be carried out according to the method described in US Pat. No. 4,606,914.

 As a representative of the pigments coated in accordance with the invention, mention may more particularly be made of iron oxide pigments coated with myristoyl sarcosinate and titanium oxide pigments coated with myristoyl sarcosinate.

 The composition according to the invention may comprise from 0.5% to 25% by weight, in particular a content at least equal to 5% by weight, more particularly from 5% to 20% by weight, or even from 7% to 20% by weight. weight, and in particular from 7 to 15% by weight of pigments treated relative to the total weight of said composition.

 As stated previously, the cosmetic compositions considered in the context of the present invention are more particularly fluid compositions of the water-in-oil volatile hydrocarbon emulsion type for which the problem of pigment stability is particularly significant.

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 For the purposes of the present invention, fluid denotes a composition capable of flowing under the action of its own weight at room temperature (25 ° C.) as opposed to compositions of the paste type.

 More precisely, this type of composition can be characterized by a viscosity of at most 2 Pa.s (20 and in particular varying from 0.8 to 1. 2 Pa.s, (8 12 poises) measured at 25 C with a viscometer rotary TV CONTRAVES equipped with a mobile MSr3 at the frequency of 60Hz (corresponding to a shear speed of 240 min -1), the measurement being made after 10 minutes of rotation of the mobile (time at the end of which a stabilization of the viscosity and rotational speed of the mobile).

The aqueous phase:
The composition according to the invention comprises at least one aqueous phase containing water. The water can be floral water such as blueberry water and / or mineral water such as VITTEL water, LUCAS water or LA ROCHE POSAY water and / or thermal water.

 This aqueous phase can also include solvents other than water, for example primary alcohols such as ethanol and isopropanol, glycols such as glycerol, propylene glycol, butylene glycol, dipropylene glycol, diethylene. glycol, glycol ethers, C1-C4 alkyl ethers of mono-, di- or tri-propylene glycol, mono-, di- or tri-ethylene glycol, and mixtures thereof.

 The aqueous phase may further comprise stabilizers, for example sodium chloride, magnesium dichloride and magnesium sulfate.

 It can also incorporate any water-soluble or water-dispersible compound compatible with an aqueous phase such as gelling agents, film-forming polymers, thickeners, surfactants and their mixtures.

 According to a particular embodiment, the aqueous phase, and in particular water, can be present in the composition according to the invention in a content ranging from 1% to 70%, in particular from 5% to 50% by weight, and in particular from 5% to 20% by weight, relative to the total weight of the composition.

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The oily phase:
The composition according to the invention comprises at least one volatile hydrocarbon oil.

 By "volatile oil" is meant an oil (or non-aqueous medium) capable of evaporating on contact with the skin in less than an hour, at room temperature and atmospheric pressure. Volatile oil is a volatile cosmetic oil, liquid at room temperature, in particular having a non-zero vapor pressure, at room temperature and atmospheric pressure, in particular having a vapor pressure ranging from 0.13 Pa to 40,000 Pa (10 -3 to 300 mm Hg), preferably ranging from 1.3 Pa to 13,000 Pa (0.01 to 100 mm Hg), and preferably ranging from 1.3 Pa to 1,300 Pa (0.01 to 10 mm of Hg).

 In addition, the volatile oil generally has a boiling point, measured at atmospheric pressure, ranging from 150 C to 260 C, and preferably ranging from 170 C to 250 C.

 The term “hydrocarbon-based oil” is understood to mean an oil formed essentially, or even made up, of carbon and hydrogen atoms, and optionally oxygen, nitrogen atoms, and containing no silicon or fluorine atom. It can contain ester, ether, amine and / or amide groups.

 The volatile hydrocarbon-based oil which can be used in the invention can be chosen from hydrocarbon-based oils having a flash point ranging from 40 ° C. to 102 ° C., in particular from 40 ° C. to 55 ° C., and in particular from 40 ° C. to 50 ° C. and their mixtures.

 As volatile hydrocarbon-based oil, mention may be made of volatile hydrocarbon-based oils having from 8 to 16 carbon atoms and their mixtures, and in particular branched C8-C16 alkanes such as Cg-C16 iso-alkanes (also called isoparaffins), isododecane, isodecane, isohexadecane and for example the oils sold under the trade names of Isopars # or Permyls #, the branched esters of C8-C16 such as iso-hexyl neopentanoate, and their mixtures. More particularly, the volatile hydrocarbon-based oil is chosen from volatile hydrocarbon-based oils having from 8 to 16 carbon atoms and their mixtures, in particular from isododecane, isodecane, isohexadecane, and comprises at least isododecane.

The volatile hydrocarbon oil can be present in a content ranging from 4% to
80% by weight, in particular from 10% to 70% by weight, and in particular from 15% to 60% by weight, or even ranging from 25% to 60% by weight relative to the total weight of the emulsion.

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Additional volatile oil:
The composition according to the invention can also comprise, in its oily phase, at least one additional volatile oil chosen from volatile silicone oils, volatile fluorinated oils and their mixtures.

 The volatile silicone oil which can be used in the invention can be chosen from silicone oils having a flash point ranging from 40 ° C. to 102 ° C., in particular having a flash point greater than 55 ° C. and less than or equal to 95 ° C. and in particular 65 C to 95 C.

 As volatile silicone oil, mention may be made of linear or cyclic silicone oils having from 2 to 7 silicon atoms, these silicones optionally comprising alkyl or alkoxy groups having from 1 to 10 carbon atoms. As an example of a volatile silicone oil, there may be mentioned in particular octamethyl cyclotetrasiloxane, decamethyl cyclopentasiloxane, dodecamethyl cyclohexasiloxane, heptamethyl hexyltrisiloxane, heptamethyloctyl trisiloxane, hexamethyl disiloxane, octamethyl trisethyloxisiloxane, octamethyl trisiloxane dodecamethyl pentasiloxane, and mixtures thereof.

 Volatile fluorinated oil generally has no flash point.

 As volatile fluorinated oil, nonafluoroethoxybutane, nonafluoromethoxybutane, decafluoropentane, tetradecafluorohexane, dodecafluoropentane and their mixtures can be mentioned.

 The additional volatile oil may be present in a content ranging from 0.1% to 25%, in particular from 1% to 15% by weight, and in particular ranging from 1% to 10% by weight, relative to the total weight of the composition according to the invention.

Additional non-volatile oil:
The oily phase of the composition according to the invention can also comprise at least one non-volatile oil.

 This non-volatile oil may be present at a content ranging from 0.1% to 12%, and in particular ranging from 1% to 5% by weight, relative to the total weight of said composition.

 The non-volatile oil can be chosen from oils of mineral, animal, vegetable or synthetic, carbonaceous, hydrocarbon and / or silicone origin, and mixtures thereof, insofar as they are compatible with the intended use.

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 Mention may be made of non-volatile hydrocarbon oils such as paraffin or petrolatum oil, isoeicosan, mink, turtle, soybean oil, perhydrosqualene, sweet almond oil, calophyllum oil, palm, grapeseed, sesame, corn, macaw, rapeseed, sunflower, cotton, apricot, castor, avocado, jojoba, olive or cereal sprouts; esters of lanolic acid, oleic acid, lauric acid, stearic acid; fatty esters, such as isopropyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, diisopropyl adipate, isononyl isononanoate, isodecyl neopentanoate, palmitate 2-ethyl-hexyl, 2-hexyl-decyl laurate, 2-octyl-decyl palmitate, 2octyl-dodecyl myristate or lactate, 2-diethyl-hexyl succinate, diisostearyl malate, glycerin or diglycerin triisostearate; higher fatty acids such as myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, linoleic acid, linolenic acid or isostearic acid; higher fatty alcohols such as cetanol, stearyl alcohol or oleic alcohol, linoleic or linolenic alcohol, isostearic alcohol or octyl dodecanol.

 As non-volatile silicone oil, mention may be made of polydimethylsiloxane (PDMS), optionally phenylated such as phenyltrimethicones, or optionally substituted by aliphatic and / or aromatic groups, or by functional groups such as hydroxyl, thiol and / or amine groups ; polysiloxanes modified with fatty acids, fatty alcohols or polyoxyalkylenes, and mixtures thereof.

 The composition according to the invention can advantageously comprise from 30% to 70% of oils, and in particular from 35% to 60% by weight, relative to its total weight.

Other fatty substances:
The oily phase can also comprise at least one wax, at least one gum and / or at least one pasty fatty substance, of vegetable, animal, mineral or synthetic origin, or even silicone.

 Among the waxes solid at room temperature, which may be present in the composition according to the invention, mention may be made of hydrocarbon waxes such as beeswax, Carnauba, Candellila, Ouricoury, Japanese wax, cork or sugar cane fiber waxes, paraffin, lignite waxes, microcrystalline waxes, lanolin wax, Montan wax, ozokerites, polyethylene waxes, waxes

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 obtained by Fischer-Tropsch synthesis, hydrogenated oils. Silicone waxes can also be used, among which mention may be made of alkyl, alkoxy and / or polymethylsiloxane esters.

 The waxes can be present in an amount of 0.1% to 10%, and in particular from 0.1% to 5% by weight relative to the total weight of the composition.

 The pasty fatty compounds can be defined using at least one of the following physicochemical properties: - a viscosity of 0.1 to 40 Pa. S (1 to 400 poises), preferably 0.5 to 25 Pa .s, measured at 40 C with a CONTRA VES TV rotary viscometer equipped with an MS-r3 or MS-r4 mobile at a frequency of 60 Hz, - a melting point of 25-70 C, preferably 25-55 C .

 The compositions of the invention may also comprise at least one alkyl, alkoxy or phenyl-dimethicone such as, for example the product sold under the name of "Abil wax 2440" by the company GOLDSCHMIDT.

 Likewise, they can also comprise at least one silicone resin comprising a combination of the units R3SiOi / 2, R2SiO2 / 2, RSi03 / 2 and Si04 / 2, in which R denotes an alkyl radical having from 1 to 6 carbon atoms.

Surfactant:
Advantageously, the composition according to the invention can comprise a surfactant or a mixture of surfactants whose HLB (hydrophilic / lipophilic balance) is less than 7 and is suitable for obtaining a water-in-oil W / O emulsion.

 As surfactant having a lower HLB 7, there may be mentioned the fatty acid esters of polyols such as mono-, di-, tri- or sesqui-oleates or stearates of sorbitol or of glycerol, laurates of glycerol or of polyethylene glycol; alkyl or alkoxy dimethicone copolyols with an alkyl or alkoxy chain hanging or at the end of the silicone skeleton having, for example, from 6 to 22 carbon atoms.

 The surfactant can be present in the composition in a content ranging from 0.3% to 10% by weight, relative to the total weight of the composition, and in particular from 1% to 8% by weight.

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Thickener:
The composition according to the invention can also comprise at least one thickening agent for the oily phase. This thickening agent can be chosen from: - organomodified clays which are clays treated with compounds chosen in particular from quaternary amines and tertiary amines. As organomodified clays, mention may be made of organomodified bentonites such as those sold under the name "Bentone 34"# by the company RHEOX, organomodified hectorites such as those sold under the name "Bentone 27"#,"Bentone38" by the company Rheox.

 - hydrophobic pyrogenic silica, which is a pyrogenic silica chemically modified at the surface by chemical reaction generating a reduction in the number of silanol groups. Silanol groups can in particular be substituted by hydrophobic groups.

 The hydrophobic groups can be: - trimethylsiloxyl groups, which are in particular obtained by treatment of fumed silica in the presence of hexamethyldisilazane. Silicas thus treated are called "Silica silylate" according to the CTFA (6th edition, 1995). They are for example # sold under the references "AEROSIL R812" by the company Degussa, "CAB-O-SIL TS-530 #" by the company Cabot.

 - Dimethylsilyloxyl or polydimethylsiloxane groups, which are obtained in particular by treatment of fumed silica in the presence of polydimethylsiloxane or dimethyldichlorosilane. Silicas thus treated are called "Silica dimethyl silylate" according to the CTFA (6th edition, 1995). They are for example marketed under the references "AEROSIL R972", "AEROSIL R974 # by the company Degussa," CAB-O-SIL TS-610 # "," CAB-O-SIL TS-720 # "by the company Cabot.

The charges :
The composition according to the invention can also comprise fillers. By charges, it is necessary to understand colorless or white particles, mineral or synthetic, lamellar or non-lamellar.

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 The fillers can be present in the composition in a content ranging from 0.1% to 30%, in particular 0.1% to 10% by weight, relative to the total weight of the composition.

 Mention may be made of talc, mica, silica, kaolin, polytetrafluoroethylene powders, polyamide (nylon) powders, poly-p-alanine and polyethylene powders, lauroyl-lysine, starch, boron nitride, polymeric hollow microspheres such as those of polyvinylidene chloride / acrylonitrile such as Expancel (Nobel Industry), particles of acrylic polymer, in particular of acrylic acid copolymer such as Polytrap (Dow Corning), powders polyurethane, silicone resin microbeads (Toshiba's Tospearls, for example), precipitated calcium carbonate, dicalcium phosphate, magnesium carbonate and hydro-carbonate, hydroxyapatite, hollow silica microspheres (Silica Beads of Maprecos), glass or ceramic microcapsules, metal soaps derived from organic carboxylic acids having 8 to 22 carbon atoms, preferably 12 to 18 carbon atoms, for example s zinc, magnesium or lithium tearate, zinc laurate, magnesium myristate, and mixtures thereof. These fillers can be treated or not on the surface, in particular to make them lipophilic.

 In known manner, the composition according to the invention may contain one or more of the adjuvants customary in the cosmetic field such as hydrophilic or lipophilic gelling agents and / or thickeners; moisturizers; emollients; hydrophilic or lipophilic active agents; anti-free radical agents; sequestrants; antioxidants; preservatives; alkalizing or acidifying agents; perfumes ; film-forming agents, in particular film-forming polymers; their mixtures. The amounts of these various adjuvants are those conventionally used in foundations.

 As active agents which can be used in the composition of the invention, mention may be made, for example, of hydrating agents such as protein hydrolysates and polyols such as glycerin, glycols such as polyethylene glycols, and sugar derivatives; natural extracts; anti-inflammatory drugs; procyannidolic oligomers; vitamins such as vitamin A (retinol), vitamin E (tocopherol), vitamin C (ascorbic acid), vitamin B5 (panthenol), vitamin B3 (niacinamide), derivatives of these vitamins (especially esters) and mixtures thereof ; urea; caffeine; salicylic acid and its derivatives; alpha-hydroxy acids such as lactic acid and glycolic acid and their

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 derivatives; retinoids such as carotenoids and vitamin A derivatives; sunscreens; hydrocortisone; melatonin; extracts of algae, fungi, plants, yeasts, bacteria; enzymes; steroids; anti-bacterial active ingredients such as 2,4,4'-trichloro-2'-hydroxy diphenyl ether (or triclosan), 3,4,4''trichlorocarbanilide (or triclocarban) and the acids indicated above and in particular the salicylic acid and its derivatives; tensing agents; and their mixtures.

 Sun filters (or UV filters) can be chosen from organic filters, physical filters and their mixtures.

 As chemical sunscreens which can be used in the composition of the invention, the composition of the invention can comprise all the UVA and UVB filters which can be used in the cosmetic field.

Examples of UVB filters include:
1) salicylic acid derivatives, in particular homomenthyl salicylate and octyl salicylate;
2) cinnamic acid derivatives, in particular 2-ethylhexyl p-methoxycinnamate, sold by the company Givaudan under the name Parsol MCX;
3) derivatives of ss, ss'-diphenylacrylate liquids, in particular a-cyano-a, p 'diphenylacrylate of 2-ethylhexyl or octocrylene, sold by the company BASF under the name UVINUL N539;
4) derivatives of p-aminobenzoic acid;
5) 4-methyl benzylidene camphor sold by the company Merck under the name EUSOLEX 6300 #;
6) 2-phenylbenzimidazole 5-sulfonic acid sold under the name EUSOLEX 232 # by the company Merck;
7) 1,3,5-triazine derivatives, in particular: - 2,4,6-tris [p- (2'-ethylhexyl-l'-oxycarbonyl) anilino] -1,3,5-triazine marketed by the company BASF under the name UVINUL T150, and - dioctyl butamido triazone marketed by the company Sigma 3V under the name UVASORB HEB #;
8) mixtures of these filters.

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Examples of UVA filters include:
1) dibenzoylmethane derivatives, in particular 4- (ter.-butyl) methoxy dibenzoylmethane sold by the company Givaudan under the name PARSOL 1789 #;
2) 1,4-benzene acid [di (3-methylidenecampho-10-sulfonic acid)] optionally in partially or totally neutralized form, sold under the name MEXORYL SX by the company Chimex.

3) benzophenone derivatives, for example: - 2,4-dihydroxybenzophenone (benzophenone-1); - 2,2 ', 4,4'-tetra-hydroxybenzophenone (benzophenone-2); - 2-hydroxy-4-methoxy-benzophenone (benzophenone-3), sold under the name UVINUL M40 # by the company BASF; - 2-hydroxy-4-methoxy-benzophenone-5-sulfonic acid (benzophenone-4) as well as its sulfonate form (benzophenone-5), sold by the company BASF under the name UVINUL MS40 #; - 2,2'-dihydroxy-4,4'-dimethoxy-benzophenone (benzophenone-6), - 5-chloro-2-hydroxybenzophenone (benzophenone-7); - 2,2'-dihydroxy-4-methoxy-benzophenone (benzophenone-8); - the disodium salt of the 2,2'-dihydroxy-4,4'-dimethoxy-benzophenone-5,5'-disulfonic acid (benzophenone-9); - 2-hydroxy-4-methoxy-4'-methyl-benzophenone (benzophenone-
10); - benzophenone-11; - 2-hydroxy-4- (octyloxy) benzophenone (benzophenone-12).

4) silane derivatives or polyorganosiloxanes containing a benzophenone group;
5) anthranilates, in particular menthyl anthranilate marketed by the company Haarman & Reiner under the name NEO HELIOPAN MA #;
6) compounds comprising per molecule at least two benzoazolyl groups or at least one benzodiazolyl group, in particular 1,4-bis-benzimidazolylphenylen-3,3 ', 5,5'-tetrasulfonic acid as well as its marketed salts by the Society
Haarman &Reimer;

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- le2-[1-[3-[1,3,3,3-tétraméthyl-l-[(triméthylsilyl)oxy]disiloxanyl]propyl]-lH- benzimidazol-2-yl]-benzoxazole ; - le 2-[l-[3-[l,3,3,3-tétraméthyl-l-[(triméthylsilyl)oxy]disiloxanyl]propyl]-lH- benzimidazol-2-yl]-benzothiazole ; - le 2-[l-(3-trimethylsilanyl-propyl)-lH-benzimidazol-2-yl]-benzoxazole ; - le 6-méthoxy-1,1'-bis-(3-triméthylsilanyl-propyl)-1H,1'H- [2,2']bibenzimidazolyl-benzoxazole ; - le 2-[l-(3-trimethylsilanyl-propyl)-lH-benzimidazol-2-yl]-benzothiazole ; qui sont décrits dans la demande de brevet EP-A-1 028 120 ;
8) les dérivés de triazine, et en particulier la 2,4-bis {[4-(2-éthyl- hexyloxy)-2-hydroxy]-phényl}-6-(4-méthoxy-phényl)-l,3,5-triazine commercialisé par la société Ciba Geigy sous la dénomination TINOSORB S#, et le 2,2'-méthylènebis-[6-(2H benzotriazol-2-yl)4-(1,1,3,3-tétraméthylbutyl)phénol] commercialisé par la société Ciba Geigy sous la dénomination TINOSORB M# ;
9) leurs mélanges. 7) the silicon derivatives of N-substituted benzimidazolyl-benzazoles or of benzofuranyl-benzazoles, and in particular:

- le2- [1- [3- [1,3,3,3-tetramethyl-1 - [(trimethylsilyl) oxy] disiloxanyl] propyl] -lH-benzimidazol-2-yl] -benzoxazole; - 2- [1- [3- [1,3,3,3-tetramethyl-1 - [(trimethylsilyl) oxy] disiloxanyl] propyl] -1H-benzimidazol-2-yl] -benzothiazole; - 2- [1- (3-trimethylsilanyl-propyl) -1H-benzimidazol-2-yl] -benzoxazole; - 6-methoxy-1,1'-bis- (3-trimethylsilanyl-propyl) -1H, 1'H- [2,2 '] bibenzimidazolyl-benzoxazole; - 2- [1- (3-trimethylsilanyl-propyl) -1H-benzimidazol-2-yl] -benzothiazole; which are described in patent application EP-A-1 028 120;
8) triazine derivatives, and in particular 2,4-bis {[4- (2-ethylhexyloxy) -2-hydroxy] -phenyl} -6- (4-methoxy-phenyl) -1,3, 5-triazine marketed by the company Ciba Geigy under the name TINOSORB S #, and 2,2'-methylenebis- [6- (2H benzotriazol-2-yl) 4- (1,1,3,3-tetramethylbutyl) phenol ] sold by Ciba Geigy under the name TINOSORB M #;
9) their mixtures.

 It is also possible to use a mixture of several of these filters and a mixture of UVB filters and UVA filters and also mixtures with physical filters.

 As physical filters, mention may be made of titanium oxides (amorphous or crystallized titanium dioxide in rutile form and / or anatase), of zinc, of iron, of zirconium, of cerium or their mixtures. These metal oxides can be in the form of particles having a micrometric or nanometric size (nano-pigments). In the form of nanopigments, the average particle sizes range, for example, from 5 to 100 nm.

 These pigments are preferably treated so as to make their surface hydrophobic; this treatment can be carried out according to methods known to those skilled in the art; the pigments can in particular be coated with silicone compounds such as PDMS and / or with polymers.

 Of course, those skilled in the art will take care to choose the optional adjuvant (s) added to the composition according to the invention in such a way that the advantageous properties intrinsically attached to the composition according to the invention are not, or not substantially, , altered by the proposed addition.

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 The compositions according to the invention can be in the form of a foundation, a concealer product, an eyeshadow, a tinted cream, and / or a makeup composition of the body, or a lip care or makeup product, in particular a lipstick.

 More particularly, it is a foundation.

EXAMPLES:
The examples described below are presented by way of illustration and not limit the scope of the invention.

Example 1:
A foundation was prepared in the form of a water-in-oil emulsion having the following composition: Oily phase: A. Dispersion of polymer (1) 55.5 g B. Mixture of triblock styrene / butylene / ethylene / styrene copolymer and of ethylene / propylene / styrene star copolymer in isododecane (in weight proportion 1.95 / 12 / 86.05) (Versagel M5950 # from the company Penreco) 4.5 g C. Polytetrafluoroethylene wax (Ceridust 9205F from Clariant ) 3 g D. Nylon powder 4 g E. Isododecane 2.5 g F. Oxyethylenated oxypropylenated silicone mixture substituted in [alpha] - # / cyclomethicone (85/15) sold under the trade name Abil EM 97 by the company Goldschmidt 0 .9 g

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 G. Mono-diglycerides of iso-stearic acid esterified with succinic acid, sold under the trade name Inwitor 780 K # by the company Sasol 0.3 g H. Red iron oxide coated with 3% sodium salt myristoyl sarcosinate 0.6 g yellow iron oxide coated with 3% myristoyl sarcosinate 2 g black iron oxide coated with 3% sodium salt of myristoyl sarcosinate 0.5 g I. titanium oxide coated with 3 % of myristoyl sarcosinate 6.9 g Aqueous phase: J. Glycerin 3 g K. Magnesium sulphate 0.7 g L. Preservatives qs M. Water qs 100 g (1) The polymer dispersion is a dispersion of non-crosslinked copolymer of methyl acrylate and acrylic acid in a ratio 85/15, in isododecane, prepared according to the method of Example 7 of document EP-A-749 747. The particles of poly (methyl acrylate / acrylic acid) thus obtained, are surface stabilized in isododecane by a diblock block copolymer polystyr ene / copoly (ethylenepropylene) sold under the name of KRATON G1701 (Shell), having a dry matter content of 22.6% by weight and an average particle size of 175 nm (polydispersity: 0.05) and a Tg of 20 C. This copolymer is film-forming at room temperature (25 C).

 The emulsion is prepared as follows:

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Preparation of the oily phase:
With stirring at room temperature, H and 1 are dispersed in the mixture (A + B). E, then F, then G, then Ce, is then added thereto. Homogenization is carried out after each addition.

Preparation of the aqueous phase:
We dissolve K and L in M and then we add J.

Emulsification:
The aqueous phase is added to the fatty phase, with stirring, at room temperature and the whole is homogenized for ten minutes.

 This foundation has good storage stability after 1 month at room temperature (25 C). It is easily applied to the skin with a good feeling of oiliness to the touch, and the makeup obtained forms a uniform, soft, matt deposit without transfer.

Claims (34)

1. Fluid cosmetic composition, in the form of a water-in-oil volatile hydrocarbon emulsion, comprising at least one pigment, characterized in that said pigment is present in whole or in part in a form surface treated with at least one compound of formula general 1:

 in which: - R represents a linear or branched, saturated or unsaturated, C9 to C19 alkyl radical, - M represents a hydrogen atom or a metal ion notably chosen from sodium, aluminum, magnesium, calcium , zinc, zirconium and titanium, and - m represents an integer varying from 1 to 4.  2. Composition according to claim 1, characterized in that said pigment is coated with at least one compound of general formula I.  3. Composition according to claim 1 or 2, characterized in that the RCO group is chosen from the caproyl, lauroyl, myristoyl, palmitoyl, stearoyl and oleoyl radicals.  4. Composition according to any one of claims 1 to 3, characterized in that RCO represents a lauroyl, myristoyl, palmitoyl radical and in particular a myristoyl radical.  5. Composition according to any one of the preceding claims, characterized in that M represents a hydrogen atom.  6. Composition according to any one of the preceding claims, characterized in that the said pigment is treated on the surface and in particular coated with at least myristoyl sarcosinate.  7. Composition according to any one of the preceding claims, characterized in that the surface-treated pigment is an inorganic or organic pigment. <Desc / Clms Page number 19>  8. Composition according to claim 7, characterized in that said pigment is chosen from metal oxides such as iron oxides, titanium dioxides, cerium oxide, zirconium oxide, chromium oxide; manganese violet, ultra-navy blue, Prussian blue, ultramarine blue, ferric blue, bismuth oxychloride, mother-of-pearl, mica coated with titanium or bismuth oxychloride, colored pearlescent pigments such as titanium mica with iron oxides, titanium mica with ferric blue or chromium oxide, pearlescent pigments based on bismuth chloride oxide, carbon black, D & C type pigments , lacquers based on cochineal carmine, barium, strontium, calcium, aluminum and their mixtures.  9. Composition according to claim 8, characterized in that it is iron oxide (s) and / or titanium oxide (s).  10. Composition according to any one of claims 2 to 9, characterized in that the coating represents from 0.1 to 10% and in particular from 1% to 5% by weight of the total weight of the coated pigment.  11. Composition according to any one of the preceding claims, characterized in that it comprises in an amount of 0.5% to 25% by weight of pigment (s) treated (s) on the surface relative to the total weight of said composition .  12. Composition according to any one of the preceding claims, characterized in that it comprises at least 5%, in particular from 5% to 20% and more particularly from 7% to 20% or even from 7% to 15% by weight of pigment (s) surface treated relative to the total weight of the composition.  13. Composition according to any one of the preceding claims, characterized in that the volatile hydrocarbon oil is chosen from hydrocarbon oils having a flash point ranging from 40 C to 102 C in particular from 40 C to 55 C and in particular from 40 C to 50 C and their mixtures.  14. Composition according to any one of the preceding claims, characterized in that the volatile hydrocarbon-based oil is chosen from volatile hydrocarbon-based oils having from 8 to 16 carbon atoms, in particular alkanes branched from Cg to C16 and esters branched from Cg to C16 and their mixtures.  15. Composition according to any one of the preceding claims, characterized in that the volatile hydrocarbon oil is chosen from isodecane, isododecane, isohexadecane and their mixtures. <Desc / Clms Page number 20>  16. Composition according to any one of the preceding claims, characterized in that the volatile hydrocarbon oil comprises at least isododecane.  17. Composition according to any one of the preceding claims, characterized in that it comprises at least from 4% to 80%, in particular from 10% to 70%, in particular from 15% to 60%, or even from 25% to 60% by weight of at least one volatile hydrocarbon-based oil relative to the total weight of said composition.  18. Composition according to any one of the preceding claims, characterized in that it also comprises at least one additional volatile oil.  19. Composition according to Claim 18, characterized in that the said additional volatile oil is chosen from volatile silicone oils, volatile fluorinated oils and their mixtures.  20. Composition according to claim 18 or 19, characterized in that said additional volatile oil is present in an amount of 0.1% to 25%, in particular from 1% to 15% and more particularly from 1% to 10% by weight per relative to the weight of said composition.  21. Composition according to any one of claims 12 to 20, characterized in that it also comprises at least one additional non-volatile oil, in particular at a rate of 0.1% to 12% and in particular from 1% to 5 % by weight, relative to the total weight of said composition.  22. Composition according to any one of the preceding claims, characterized in that it comprises from 30% to 70% and in particular from 35% to 60% by weight of oil relative to the total weight of the composition.  23. Composition according to any one of the preceding claims, characterized in that the aqueous phase comprises at least one solvent chosen from primary alcohols, glycols and C 1 to C 4 alkyl ethers of mono-, di- or tripropylene glycol, mono-, di- or tri-ethylene glycol and mixtures thereof.  24. Composition according to any one of the preceding claims, characterized in that it comprises from 1% to 70%, in particular from 5% to 50% and in particular from 5% to 20% by weight of aqueous phase relative to the total weight of the composition.  25. Composition according to any one of the preceding claims, characterized in that it also comprises at least one surfactant or mixture of <Desc / Clms Page number 21>  surfactant whose HLB is less than 7, in particular at a rate of 0.3% to 10% by weight, in particular from 1% to 8% by weight relative to the total weight of the composition.  26. Composition according to any one of the preceding claims, characterized in that it also comprises at least one wax, at least one gum and / or at least one pasty fatty substance of vegetable, animal, mineral or synthetic origin. especially silicone.  27. Composition according to any one of the preceding claims, characterized in that it also comprises at least one filler, in particular at a rate of 0.1% to 30% by weight, in particular from 0.1% to 10% by weight. relative to the total weight of the composition.  28. Composition according to any one of the preceding claims, characterized in that it also comprises an additive chosen from gelling agents and / or thickeners hydrophilic or lipophilic, hydrating agents, emollients, hydrophilic or lipophilic active agents, anti-free radical agents, sequestrants, antioxidants, preservatives, alkalizing or acidifying agents, perfumes, film-forming agents.  29. Composition according to any one of the preceding claims, characterized in that it comprises at least one sun filter in particular chosen from organic filters, physical filters and their mixtures.  30. Composition according to any one of the preceding claims, characterized in that it is in the form of a foundation, of a concealer product, of an eyeshadow, of a tinted cream, and / or a composition for making up the body, or a product for caring for or making up the lips, in particular a lipstick.  31. Composition according to any one of the preceding claims, characterized in that it is in the form of a foundation.  32. Cosmetic method for making up and / or caring for the skin, the lips and / or the integuments comprising the application to the skin, the lips and / or the integuments of a composition according to any one of the preceding claims .  33. Use of at least one pigment treated with at least one compound of general formula 1: <Desc / Clms Page number 22>  in which: - R represents a linear or branched, saturated or unsaturated, C9 to C19 alkyl radical, - M represents a hydrogen atom or a metal ion chosen from sodium, aluminum, magnesium, calcium, zinc, zirconium and titanium, and - m represents an integer varying from 1 to 4. in a fluid cosmetic composition in the form of a water-in-oil volatile hydrocarbon emulsion.

 34. Use according to claim 33, characterized in that said compound of general formula 1 is as defined in claims 1 to 10.