FR2983715A1 - Composition in emulsion form used to coat keratin fibers, comprises aqueous phase, amphiphilic wax and anionic polymer surfactant comprising skeletal chain obtained from e.g. carboxylic monomer, hydrophobic chain and alkoxy/glycerol spacer - Google Patents

Abstract

Composition in emulsion form comprises an aqueous phase, an amphiphilic wax, and an anionic polymer surfactant comprising (i) a skeletal chain obtained from a monomer including a carboxylic and unsaturated alpha , beta -monoethylenic acid and/or their esters and/or salts, (ii) a hydrophobic chain laterally extending with respect to the skeletal chain and (iii) an alkoxy or glycerol spacer connected with skeletal and hydrophobic chains.

Description

The present invention relates to a cosmetic composition for coating keratinous fibers, and in particular eyelashes or eyebrows. In particular, said cosmetic composition is a makeup composition and possibly an eyelash care product. The present invention also relates to a process for coating keratinous fibers, in particular a process for makeup and possibly care of the eyelashes. The composition used may in particular be in the form of a product for eyelashes such as a mascara, or a product for the eyebrows. More preferably, the invention relates to a mascara. By "mascara" is meant a composition intended to be applied to the eyelashes: it may be an eyelash makeup composition, an eyelash makeup base (also called a base coat), a composition to be applied to an eyelash. mascara, also called top-coat, or else a composition for cosmetic treatment of eyelashes. Mascara is especially intended for human eyelashes, but also false eyelashes. Mascaras are especially prepared according to two types of formulation: aqueous mascaras called cream mascaras, in the form of dispersion of waxes in water; anhydrous or low-water mascaras, so-called mascaras water-proofs, in the form of dispersions of waxes in organic solvents. The present application relates more specifically to so-called aqueous mascaras. The compositions for coating keratinous fibers with such a type of mascara generally consist of at least one fatty phase generally formed of one or more waxes dispersed in an aqueous liquid phase by means of an emulsifying or conveyed system. (s) in an organic solvent. The application of mascara aims in particular to increase the volume of the eyelashes and consequently increase the intensity of the gaze. For this, there are many thickening or volumizing mascaras whose principle is to deposit the maximum material on the eyelashes so as to obtain this volumizing effect (or charging). It is in particular through the quantity of solid particles that the application specificities desired for the compositions can be adjusted, such as, for example, their fluidity or consistency, as well as their thickening power (also called loading or makeup power). These solid particles are dispersed in the cream mascara using an emulsifying system composed of one or more surfactant (s). However, a particular problem encountered with certain surfactants, in particular ionic surfactants, is that they are generally unstable at low temperature (4 ° C.), the latter thus crystallizing and destabilizing the emulsion giving rise to aggregates of materials (waxes in particular) on the lashes. Another problem encountered is also that the mascara compositions comprising nonionic surfactants have a reduced emulsifying power at high temperature (45 ° C.) because of the decrease in their Griffin sense HLB value, these surfactants being no longer soluble. especially for those having an alkoxylated part, especially oxyethylenated, again giving rise to an aggregation of materials (waxes in particular). An object of the present application is more particularly to provide a stable mascara having a sufficiently thick texture to obtain a loading deposit of satisfactory consistency, allowing easy application to the eyelashes and a regular deposit, ie smooth and homogeneous , even after two months stored at 4 ° C. An object of the present application is also to provide a stable mascara having a sufficiently thick texture to obtain a loading deposit of satisfactory consistency, allowing easy application to the eyelashes and a regular deposit, ie smooth and homogeneous, even after two months stored at 45 ° C. An object of the present application is more particularly to provide a stable mascara having a sufficiently thick texture to obtain a loading deposit of satisfactory consistency, allowing easy application to the eyelashes and a regular deposit, ie smooth and homogeneous , even after two months stored at temperatures between 4 ° C and 45 ° C. An object of the present application is more particularly to provide a mascara in which the waxes are dispersed homogeneously.

An object of the present application is more particularly to provide a mascara in which the pigments are dispersed homogeneously.

An object of the present application is more particularly to provide a mascara pleasant to the application. An object of the present invention is more particularly to provide a composition for coating keratinous fibers allowing a good separation of the eyelashes during its application, without the formation of bundles of eyelashes, and this ensuring a deposit of smooth and regular material (without clusters decomposition). An object of the present invention is more particularly to obtain a keratinous fiber coating composition, preferably a mascara, having good application properties in terms of slipperiness and playtime (redeposition, retouching). Another object of the present invention is to obtain a composition for coating keratinous fibers, preferably a mascara, giving rise to a volume effect on the eyelashes. Another object of the present invention is to obtain a composition for coating keratinous fibers, preferably a mascara, which has good hold on the eyelashes.

Another object of the present invention is to obtain a composition for coating keratinous fibers, preferably a mascara, giving rise to a loading or covering deposit.

Another object of the present invention is to obtain a composition for coating keratinous fibers, preferably a mascara, having good elongation properties for eyelashes coated with such a composition.

An object of the present invention is to obtain a coating composition for keratinous fibers, preferably a mascara, having good bending properties for eyelashes coated with such a composition.

An object of the present invention is still to obtain a composition for coating keratinous fibers, preferably a mascara, having a good intensity of black, from a colorimetric and chromatic point of view. Another object of the present invention is to obtain a composition for coating keratinous fibers, preferably a mascara, which has good adhesion to the eyelashes. Accordingly, the subject of the present invention is a cosmetic composition for coating keratinous fibers, preferably eyelashes, preferably a mascara composition, of the emulsion type, preferably wax (es) in water, comprising: an aqueous phase, at least one amphiphilic wax; at least one anionic associative polymer comprising: i) a skeletal chain derived from at least one monomer comprising at least one carboxylic acid and at least one α, β-monoethylenic unsaturation; ester (s), their salt (s), and mixture thereof, ii) at least one hydrophobic chain extending laterally relative to said skeletal chain, and iii) at least one alkoxylated or glycerolated spacer connecting said skeletal chain and said hydrophobic chain (s). Surprisingly and unexpectedly, the inventors of the present application solved this problem (s) by means of such a composition. In particular, a composition according to the invention gives rise to a stable composition, with a homogeneous and even dispersion of waxes, even after 2 months at 45 ° C. or 4 ° C. It appears that such a composition also has good dispersion of the pigments. Such a composition is still pleasant to the application.

The subject of the present invention is also, according to a second aspect, a kit or kit for coating keratinous fibers comprising: at least one cosmetic composition for coating keratinous fibers as previously described, and at least one applicator of the composition, said applicator comprising means, optionally in relief, configured to engage with said keratinous fibers, such as eyelashes or eyebrows, to smooth and / or separate eyelashes or eyebrows. Such reliefs may include teeth, bristles or other. Said assembly, and in particular said applicator, may optionally be equipped with means for vibrating and / or heating said composition. The subject of the present invention is also, according to a third aspect, an assembly or kit for conditioning and applying a composition for coating keratin fibers, comprising: a device for conditioning said cosmetic composition for coating keratin fibers, such as previously described, - an applicator of said composition. Said applicator may be secured to a gripping member forming a cover for said conditioning device. In other words, said applicator can be mounted in a removable position on said device between a closed position and a position disengaged from a dispensing opening of the packaging device of said composition. The subject of the present invention is, according to a fourth aspect, a method of coating keratin fibers, and in particular eyelash makeup, comprising a step of applying a cosmetic composition for coating keratinous fibers as previously described. According to particular preferred embodiments of the present invention: the emulsion is of the wax-in-water type; said composition comprises a fatty phase dispersed in the aqueous phase; said composition is free of oil or organic solvent; the anionic associative polymer (s) comprises (include) a skeletal chain derived from at least one (meth) acrylic acid monomer, their ester (s), their salt; (s), and their mixture; said hydrophobic chain (s) and their respective spacers extend in continuity from one another, laterally relative to said skeletal chain; the hydrophobic chain (s) comprises (s) a linear fatty chain saturated with C 8 -C 24, preferably C 12 -C 22, more preferably C 16 -C 22; the anionic associative polymer (s) is (are) chosen from copolymers derived from (meth) acrylic acid / C 1 -C 8 alkyl (meth) acrylate, better C1-C3, preferably O2 / (meth) acrylate fatty alcohol at 08-024, better C12-022, preferably C16-022, more preferably still at 018 or 022 and their mixture, alkoxylated or glycerolated ; the anionic associative polymer (s) is (are) chosen from the following INCI name copolymers: ACRYLATES / STEARETH-20 METHACRYLATE COPOLYMER, ACRYLATES / BEHENETH-25 METHACRYLATE COPOLYMER, and their mixture; the total content of associative anionic polymer (s) is greater than or equal to 0.1% by weight, better still 0.3% by weight, relative to the total weight of the composition, preferably inclusive of between 0.3 and 5% by weight, more preferably between 0.3 and 4% by weight relative to the total weight of the composition; the anionic associative polymer (s) and the amphiphilic wax (es) form the main emulsifying system of the composition; the fatty phase mainly comprises waxes, in particular amphiphilic waxes; the total content of amphiphilic wax (es) is greater than or equal to 7% by weight, relative to the total weight of the composition, preferably between 10 and 40% by weight, relative to the total weight of the composition; the amphiphilic wax (es) is (are) chosen from hydrocarbon waxes esterified with at least one oxyethylenated group, glycerolated, and their mixture; said composition comprises at least one amphiphilic wax chosen from polyoxyethylenated esterified beeswax, polyglycerolated beeswax, a polyglycerolated vegetable wax such as mimosa, jojoba and sunflower, and mixtures thereof; said composition comprises at least one non-amphiphilic wax; the non-amphiphilic wax (es) is (are) chosen from among beeswax, lanolin wax, Chinese insect waxes, rice wax, wax of Carnauba, Candelilla wax, Ouricurry wax, Alfa wax, cork fiber wax, sugar cane wax, Japanese wax, sumac wax, montan wax, waxes microcrystallines, paraffin wax, ozokerite, polyethylene wax, waxes obtained by the Fisher-Tropsch synthesis, a C20-C40 alkyl (hydroxystearyloxy) stearate, the waxy copolymers and their esters, and waxes obtained by catalytic hydrogenation of animal or vegetable oils having linear or branched C8-C32 fatty chains, the waxes obtained by hydrogenation of olive oil esterified with stearyl alcohol, the waxes obtained by hydrogenation of oil of castor oil esterified with cetyl alcohol, silicone waxes such as alkyl or alkoxy dimethicone having 16 to 45 carbon atoms, fluorinated waxes, and their mixture (s); said composition may comprise at least one non-amphiphilic wax chosen from candelilla wax, carnauba wax, beeswax, paraffin wax, polyethylene wax, rice wax, and their mixture (s) (s); the total content of non-amphiphilic wax (s) is greater than or equal to 0.5% by weight relative to the total weight of the composition, preferably between 1 and 10% by weight relative to the total weight of the composition; ; the total content of amphiphilic wax (es) and the total content of non-amphiphilic wax (es) are such that the weight ratio of amphiphilic wax (es) on the wax (es) ) non-amphiphilic (s) is greater than or equal to 1; said composition comprises at least 50% by weight of amphiphilic wax (es), preferably at least 75% by weight of amphiphilic wax (s), relative to the total weight of wax (es); the total content of associative anionic polymer (s) and the total content of amphiphilic wax (es) are such that the weight ratio of the anionic associative polymer (s) to amphiphilic wax (s) is greater than or equal to 1/75, more preferably 1/60, preferably included between 1/50 and 1/5, more preferably between 1/50 and 1/10; the total content of associative anionic polymer (s) and the total content of wax (es) are such that the weight ratio of associative anionic polymer (s) on wax (es) is greater than or equal to 1/100, more preferably 1/75, preferably included between 1/50 and 1/5, more preferably between 1/50 and 1/10; said composition comprises at least one hydrophilic film-forming polymer; said composition may comprise at least one dyestuff chosen from one or more pulverulent material (s), preferably metal oxides, and in particular iron oxides; - The metal oxide (s) is (are) preferably present at a content greater than or equal to 2% by weight relative to the total weight of the composition, advantageously between 3 and 15 inclusive. % by weight relative to the total weight of the composition; said cosmetic composition comprises at least one hydrophilic and / or lipophilic film-forming polymer, preferably at least one hydrophilic film-forming polymer; - The said composition may be a makeup composition, a makeup base or "base coat", a so-called "top-coat" composition to be applied to a make-up; Other characteristics, properties and advantages of the present invention will emerge more clearly on reading the description and examples which follow. Aqueous Phase The composition according to the invention comprises an aqueous phase, which can form a continuous phase of the composition. The aqueous phase comprises water. It may also comprise at least one water-soluble solvent. By "water-soluble solvent" is meant in the present invention a liquid compound at room temperature (20 ° C) and atmospheric pressure (760 mm Hg), and miscible with water. The water-soluble solvents that can be used in the compositions according to the invention can moreover be volatile. Among the water-soluble solvents that can be used in the compositions in accordance with the invention, there may be mentioned lower monoalcohols having from 1 to 5 carbon atoms such as ethanol and isopropanol, glycols having from 2 to 8 carbon atoms. carbon such as ethylene glycol, propylene glycol, 1,3-butylene glycol and dipropylene glycol. The aqueous phase (water and optionally the solvent miscible with water) is generally present in the composition according to the present application in a content ranging from 20 to 90% by weight, relative to the total weight of the composition, preferably ranging from 25 to 80% by weight, preferably ranging from 30 to 70% by weight, and more preferably from 45 to 60% by weight relative to the total weight of the composition.

Fat phase A fatty phase according to the invention comprises at least one amphiphilic wax. This fatty phase may also comprise constituents chosen in particular from at least one volatile oil, at least one additional nonvolatile oil, pasty fatty substances, and their mixture (s). Preferably, the fatty phase consists predominantly of waxes and even more preferably exclusively of waxes. Wax (es) The wax (es) considered in the context of the present invention is (are) in general a lipophilic compound, insoluble in water, solid at ambient temperature (20 ° C.). C) and at atmospheric pressure (760 mmHg), with reversible solid / liquid state change, having a melting point greater than or equal to 30 ° C. and up to 200 ° C. and in particular up to 120 ° C. .

In particular, the waxes that are suitable for the invention may have a melting point greater than or equal to 45 ° C., and in particular greater than or equal to 55 ° C. For the purposes of the invention, the melting point corresponds to the temperature the most endothermic peak observed in thermal analysis (DSC) as described in ISO 11357-3; 1999. The melting point of the wax can be measured using a differential scanning calorimeter (DSC), for example the calorimeter sold under the name "DSC Q2000" by the company TA Instruments. Preferably, the waxes comprise at least one crystallizable part, visible by X-ray diffraction observations. Preferably, the waxes have a melting enthalpy of A.Hf greater than or equal to 70 J / g. The measurement protocol is as follows: A sample of 5 mg of wax placed in a crucible is subjected to a first temperature rise from -20 ° C to 120 ° C, at the heating rate of 10 ° C / minute. then cooled from 120 ° C to -20 ° C at a cooling rate of 10 ° C / minute and finally subjected to a second temperature rise from -20 ° C to 120 ° C at a heating rate of 5 ° C / minute. During the second rise in temperature, the following parameters are measured: the melting point (Tf) of the wax, as previously mentioned, corresponding to the temperature of the most endothermic peak of the observed melting curve, representing the variation of the difference in power absorbed as a function of temperature, - A.Hf: the melting enthalpy of the wax corresponding to the integral of the whole of the melting curve obtained. This enthalpy of fusion of the wax is the amount of energy required to pass the compound from the solid state to the liquid state. It is expressed in J / g. The wax (es) may be hydrocarbon (s), fluorinated (s) and / or silicone (s) and may be of vegetable, mineral, animal and / or synthetic origin. The wax (es) may be present at a total content greater than or equal to 10% by weight relative to the total weight of the composition, better still at 15% by weight relative to the total weight of the composition. Preferably, it (they) is (are) present (s) in a content ranging from 11 to 40% by weight relative to the total weight of the composition, better from 12 to 35% and even better from 15 to 30% by weight. weight. A composition according to the invention comprises at least one amphiphilic wax. Additionally, it advantageously comprises at least one non-amphiphilic wax.

Amphiphilic waxes According to the invention, the composition comprises at least one amphiphilic wax. By "amphiphilic" wax is meant a wax comprising at least one hydrophilic part. The (the) amphiphilic wax (es) may (for example) be hydrocarbon (s). By "hydrocarbon wax" is meant a wax formed essentially, or even constituted, of carbon and hydrogen atoms, and possibly of oxygen, nitrogen, and not containing a silicon atom or fluorine. It may contain alcohol, ester, ether, carboxylic acid, amine and / or amide groups. As hydrocarbon wax, a wax chosen from ester waxes and alcohol waxes is particularly preferred.

By "ester wax" is meant according to the invention a wax comprising at least one ester function. By "alcohol wax" is meant according to the invention a wax comprising at least one alcohol function, that is to say comprising at least one free hydroxyl (OH) group. The amphiphilic wax (s) used is (are) chosen (s) from hydrocarbon waxes esterified with at least one oxyethylenated group, glycerolated, and their mixture (s), preferably with at least five groups. oxyethylenated, glycerolated, and their mixture (s). The amphiphilic wax (s) preferably used is (are) chosen from beeswax esterified with at least one oxyethylenated group, preferably polyoxyethylenated, polyglycerolated beeswax, a polyglycerolated vegetable wax such as mimosa, jojoba, sunflower, and their mixtures. Preferably, the composition according to the invention comprises a content of amphiphilic wax (s) greater than or equal to 7% by weight relative to the total weight of the composition. The composition according to the invention advantageously comprises a content of amphiphilic wax (s) ranging from 10 to 40% by weight of wax relative to the total weight of the composition, better still from 15 to 30% by weight relative to total weight of the composition. Non-amphiphilic waxes The composition according to the invention advantageously comprises at least one non-amphiphilic wax. By "non-amphiphilic wax", within the meaning of the present invention, having no hydrophilic part. In particular, non-amphiphilic wax means a wax which consists solely of non-amphiphilic wax and not a mixture which also comprises other types of waxes which are not non-amphiphilic waxes. Hydrocarbon waxes such as beeswax, lanolin wax, and Chinese insect waxes can be preferably used as waxes; rice wax, Carnauba wax, Candelilla wax, Ouricurry wax, Alfa wax, cork fiber wax, sugar cane wax, Japanese wax and sumac wax ; montan wax, microcrystalline waxes, paraffin wax and ozokerite; polyethylene waxes, waxes obtained by Fisher-Tropsch synthesis and waxy copolymers and their esters. Mention may also be made of waxes obtained by catalytic hydrogenation of animal or vegetable oils having linear or branched C8-C32 fatty chains. Among these, there may be mentioned hydrogenated jojoba oil, isomerized jojoba oil such as trans isomerized partially hydrogenated jojoba oil manufactured or marketed by Desert Whale under the trade reference ISO-JOJOBA-50 ®, hydrogenated sunflower oil, hydrogenated castor oil, hydrogenated coconut oil and hydrogenated lanolin oil, di- (trimethylol-1,1,1 propane) tetrastearate sold under the name " HEST 2T-4S "by the company HETERENE, the tetrahenate di- (trimethylol-1,1,1 propane) sold under the name HEST 2T-4B by the company HETERENE. Mention may also be made of silicone waxes such as alkyl or alkoxydimicone having from 16 to 45 carbon atoms, and fluorinated waxes. It is also possible to use the wax obtained by hydrogenation of esterified olive oil with the stearyl alcohol sold under the name "PHYTOWAX Olive 18 L 57" or even the waxes obtained by hydrogenation of castor oil esterified with alcohol. cetyl sold under the name "PHYTOVVAX ricin 16L64 and 22L73", by the company SOPHIM. Such waxes are described in Application FR-A-2792190. The composition may comprise at least one polar non-amphiphilic wax. By "polar wax" is meant waxes comprising in their chemical structure, in addition to carbon and hydrogen atoms, at least one highly electronegative heteroatom, such as O, N or P. The wax (es) non-polar amphiphilic (s) may be chosen from carnauba wax, candelilla wax, natural (or bleached) beeswax and synthetic beeswax, and their s) mixture (s). As synthetic beeswax, mention may be made of the wax sold under the name Cyclochem 326 A by Evonik Goldschmidt (INCI name: Synthetic Beeswax). The composition may comprise at least one apolar non-amphiphilic wax. Preferably, the apolar non-amphiphilic wax (es) comprises (s) one or more chosen from polyethylene wax, paraffin wax, ozokerite, and their mixture (s) ( s).

The composition may comprise a mixture of polar non-amphiphilic wax (es) and apolar non-amphiphilic wax (es). The composition may comprise at least one non-amphiphilic wax having a hardness ranging from 0.05 MPa to 15 MPa, and preferably ranging from 6 MPa to 15 MPa. The hardness is determined by measuring the compression force measured at 20 ° C. using the texturometer sold under the name TA-TX2i by the company RHEO, equipped with a stainless steel cylinder with a diameter of 2 mm. moving at the measuring speed of 0.1 mm / s, and penetrating into the wax at a penetration depth of 0.3 mm. According to a particular embodiment, a composition according to the invention may comprise at least one tacky non-amphiphilic wax, that is to say having a tack greater than or equal to 0.7 Ns and a hardness of less than or equal to 3, 5 MPa. The use of such a non-amphiphilic tacky wax may in particular make it possible to obtain a cosmetic composition which is easily applied to the eyelashes, having good grip on the eyelashes and which leads to the formation of a smooth makeup, homogeneous and thickening. The non-amphiphilic tacky wax used may in particular have a tack ranging from 0.7 Ns to 30 Ns, in particular greater than or equal to 1 Ns, in particular ranging from 1 Ns to 20 Ns, in particular greater than or equal to 2 Ns, in particular ranging from from 2 Ns to 10 Ns, and in particular ranging from 2 Ns to 5 Ns The stickiness of this wax is determined by measuring the evolution of the force (compressive force or stretching force) as a function of time, at 20 ° C. using the texturometer sold under the name "TA-TX2i" ® "by the company RHEO, equipped with a mobile cone-shaped acrylic polymer forming an angle of 45 °.

The measurement protocol is as follows: The wax is melted at a temperature equal to the melting point of the wax + 10 ° C. The melted wax is poured into a container 25 mm in diameter and 20 mm deep. The wax is recrystallized at room temperature (25 ° C) for 24 hours so that the surface of the wax is flat and smooth, then the wax is kept for at least 1 hour at 20 ° C before measuring the wax. tights. The mobile of the texturometer is moved at a speed of 0.5 mm / s, then penetrates into the wax to a depth of penetration of 2 mm. When the mobile penetrated the wax to the depth of 2 mm, the mobile is held stationary for 1 second (corresponding to the relaxation time) and then removed at a speed of 0.5 mm / s.

During the relaxation time, the force (compression force) decreases sharply until it becomes zero and then, when the mobile is removed, the force (stretching force) becomes negative and then increases again to the value 0. The pantyhose corresponds to the integral of the force vs. time curve for the part of the curve corresponding to the negative values of the force (stretching force). The value of the sticky is expressed in N.s. The non-amphiphilic tacky wax that can be used generally has a hardness of less than or equal to 3.5 MPa, in particular ranging from 0.01 MPa to 3.5 MPa, in particular ranging from 0.05 MPa to 3 MPa, or even from 0.1 MPa at 2.5 MPa.

The hardness is measured according to the protocol described above. As non-amphiphilic tacky wax, a C20-C40 alkyl (hydroxystearyloxy) stearate (the alkyl group comprising from 20 to 40 carbon atoms), alone or in a mixture, in particular a 12- (12-hydroxystearyloxy) may be used. C20-C40 alkyl stearate, of formula (II): wherein m is an integer ranging from 18 to 38, or a mixture of C3-C40 alkyl stearate, of formula (II): ## STR2 ## wherein m is an integer ranging from 18 to 38, or a mixture of compounds of formula (II). Such a wax is especially sold under the names "Kester Wax K 82 P®" and "Kester Wax K 80 P®" by the company Koster Keunen.

The waxes mentioned above generally have an initial melting point below 45 ° C. It is also possible to use the non-amphiphilic microcrystalline wax marketed under the reference SP18 by the company Strahl and Pitsch, which has a hardness of approximately 0.46 MPa and a tack value of approximately 1 N.s.

The wax (es) may be present in the form of an aqueous microdispersion of wax. By aqueous microdispersion of wax is meant an aqueous dispersion of wax particles in which the size of said wax particles is less than or equal to about 1 μm.

Microdispersions of wax are stable dispersions of colloidal wax particles, and are especially described in "Microemulsions Theory and Practice", L. M. Prince Ed., Academic Press (1977) pages 21-32. In particular, these microdispersions of wax can be obtained by melting the wax in the presence of a surfactant, and optionally a portion of the water, and then gradually adding hot water with stirring. The intermediate formation of a water-in-oil emulsion is observed, followed by a phase inversion with final obtaining of an oil-in-water type microemulsion. On cooling, a stable microdispersion of solid colloidal particles of wax is obtained.

The microdispersions of wax can also be obtained by stirring the mixture of wax, surfactant and water using stirring means such as ultrasound, the high-pressure homogenizer, the turbines. The particles of the microdispersion of wax preferably have average dimensions of less than 1 μm (in particular ranging from 0.02 μm to 0.99 μm), preferably less than 0.5 μm (in particular ranging from 0.06 μm to 0 μm). , 5 pm). Preferably, the composition according to the invention is free of non-amphiphilic wax. However according to a particular embodiment, the composition according to the invention comprises a non-amphiphilic wax content greater than or equal to 0.5% by weight relative to the total weight of the composition and better still, from 1 to 10% by weight, in particular from 2 to 8% by weight relative to the total weight of the composition, more preferably from 3 to 6% by weight relative to the total weight of the composition. When at least one non-amphiphilic wax is present in the composition, the total content of amphiphilic wax (es) and the total content of non-amphiphilic wax (s) are such that the weight ratio in wax (s) ) Amphiphilic (s) on non-amphiphilic wax (s) is greater than or equal to 3, more preferably greater than or equal to 4, and preferably between 5 and 100 inclusive.

According to a preferred embodiment, a composition according to the invention comprises at least 50% by weight of amphiphilic wax (s), better still at least 75% by weight of amphiphilic wax (s), relative to total weight of waxes.

Oil or organic solvent The compositions according to the invention may comprise at least one oil or organic solvent. The compositions according to the invention may in particular comprise at least one oil chosen from at least one non-volatile oil, at least one volatile oil, and their mixture. Non-volatile oil By "oil" is meant a fatty substance that is liquid at room temperature (20 ° C) and atmospheric pressure (760 mmHg). By "non-volatile oil" is meant an oil remaining on the skin or keratin fiber at ambient temperature (20 ° C.) and atmospheric pressure (760 mmHg). More specifically, a non-volatile oil has an evaporation rate strictly less than 0.01 mg / cm 2 / min.

To measure this evaporation rate is introduced into a crystallizer, with a diameter of 7 cm, placed on a scale located in a large chamber of about 0.3 m 3 regulated in temperature, at a temperature of 25 ° C., and in hygrometry, at a relative humidity of 50%, 15 g of oil or oil mixture to be tested. The liquid is allowed to evaporate freely, without stirring, providing ventilation by a fan (PAPST-MOTOREN, reference 8550 N, rotating at 2700 revolutions per minute) arranged in a vertical position above the crystallizer containing said oil or said mixture, the blades being directed to the crystallizer and at a distance of 20cm from the bottom of the crystallizer. The mass of oil remaining in the crystallizer is measured at regular intervals. The evaporation rates are expressed in mg of evaporated oil per unit area (cm2) and per unit of time (minute). Said at least one non-volatile oil may be selected from hydrocarbon oils and silicone oils, and mixtures thereof, preferably from hydrocarbon oils. The non-volatile hydrocarbon oils that are suitable for the present invention may in particular be chosen from: hydrocarbon oils of vegetable origin, such as triglycerides consisting of esters of fatty acids and of glycerol, the fatty acids of which may have chain lengths various C4 to C28, the latter being linear or branched, saturated or unsaturated; these oils include wheat germ, sunflower, grape seed, sesame, maize, apricot, castor, shea, avocado, olive, soya, sweet almond, rapeseed, cotton, hazelnut, macadamia, jojoba, palm, alfalfa, poppy, pumpkin, sesame, pumpkin, rapeseed, blackcurrant, evening primrose, millet, barley, quinoa, rye, safflower, bancoulier, passiflora, muscat rose; or alternatively caprylic / capric acid triglycerides, such as those sold by Stéarineries Dubois or those sold under the names Miglyol 810®, 812® and 818® by the company Sasol; synthetic ethers having from 10 to 40 carbon atoms; - linear or branched hydrocarbons of mineral or synthetic origin other than the polymers according to the invention, such as petroleum jelly, polybutenes, polydecenes, squalane, and mixtures thereof; synthetic esters such as oils of formula R1COOR2 in which R1 represents the residue of a linear or branched fatty acid containing from 1 to 40 carbon atoms and R2 represents a particularly branched hydrocarbon-based chain containing from 1 to 40 carbon atoms at provided that R1 + R2 is k10, such as, for example, purcellin oil (cetostearyl octanoate), isopropyl myristate, isopropyl palmitate, C12-C15 alcohol benzoate, hexyl laurate diisopropyl adipate, isononyl isononanoate, 2-ethylhexyl palmitate, isostearate isostearate, octanoates, decanoates or ricinoleates of alcohols or polyalcohols such as propylene glycol dioctanoate; hydroxyl esters such as isostearyl lactate, diisostearyl malate; and the pentaerythritol esters - fatty alcohols which are liquid at room temperature (20 ° C.) and atmospheric pressure (760 mmHg) with a branched and / or unsaturated carbon chain containing from 12 to 26 carbon atoms, such as octyl dodecanol, isostearyl alcohol, oleic alcohol, 2-hexyldecanol, 2-butyloctanol, 2-undecylpentadecanol; higher fatty acids such as oleic acid, linoleic acid, linolenic acid and mixtures thereof. The non-volatile silicone oils that are suitable for the present invention may in particular be chosen from: - non-volatile polydimethylsiloxanes (PDMS), polydimethylsiloxanes comprising alkyl or alkoxy groups, during and / or at the end of the silicone chain, groups each having 2 at 24 carbon atoms, phenyl silicones such as phenyl trimethicones, phenyl dimethicones, phenyl trimethylsiloxy diphenylsiloxanes, diphenyl dimethicones, diphenyl methyldiphenyl trisiloxanes, 2-phenylethyl trimethylsiloxysilicates. A composition according to the invention optionally comprises at least one non-volatile hydrocarbon oil of plant origin, such as triglycerides consisting of esters of fatty acids and of glycerol, the fatty acids of which can have various chain lengths of C4 to C28. , in particular palm and jojoba oil. A composition according to the invention is preferably free of non-volatile oil (s) silicone (s).

A composition according to the invention is preferably free of non-volatile oil. However, the total content of non-volatile oil (s) in a composition according to the invention may range from 0.01 to 10% by weight, in particular from 0.1 to 8% by weight, and preferably from 0.25 to 5% by weight relative to the total weight of the composition. According to a preferred embodiment, a composition according to the invention comprises less than 5% by weight of non-volatile oil (s) relative to the total weight of the composition.

Volatile oil The composition according to the invention may comprise at least one volatile oil. By "volatile oil" is meant an oil (or non-aqueous medium) capable of evaporating on contact with the skin in less than one hour, at room temperature (20 ° C) and atmospheric pressure (760 mm Hg). The volatile oil is a volatile cosmetic oil, liquid at room temperature (20 ° C) and at atmospheric pressure (760 mm Hg). More specifically, a volatile oil has an evaporation rate of between 0.01 and 200 mg / cm 2 / min, inclusive. This volatile oil can be hydrocarbon-based.

The volatile hydrocarbon oil may be chosen from hydrocarbon-based oils having from 7 to 16 carbon atoms. The composition according to the invention may contain one or more branched alkane (s) volatile (s). By "one or more branched alkane (s) volatile (s)" is meant indifferently "one or more volatile branched alkane (s) oil (s)".

As hydrocarbon-based volatile oil having from 7 to 16 carbon atoms, mention may be made in particular of branched C 8 -C 16 alkanes such as iso-alkanes (also known as isoparaffins) at C 8 -C 16, isododecane, isodecane and isohexadecane and for example the oils sold under the trade names of Isopars or permetyls, branched C8-C16 esters such as isohexyl neopentanoate, and mixtures thereof. Preferably, the hydrocarbonaceous volatile oil having from 8 to 16 carbon atoms is chosen from isododecane, isodecane and isohexadecane, and mixtures thereof, and is especially isododecane. The composition according to the invention may contain one or more volatile linear alkane (s). By "one or more volatile linear alkane (s)" is meant indifferently "one or more volatile linear alkane (s) oil (s)". A volatile linear alkane suitable for the invention is liquid at ambient temperature (about 20 ° C.) and at atmospheric pressure (760 mmHg). The term "volatile linear alkane" that is suitable for the invention is understood to mean a linear, cosmetic alkane capable of evaporating on contact with the skin in less than one hour at ambient temperature (20 ° C.) and atmospheric pressure (760 mm). Hg, ie 101,325 Pa), liquid at ambient temperature (20 ° C.), especially having an evaporation rate ranging from 0.01 to 15 mg / cm 2 / min, at room temperature (20 ° C.). C) and atmospheric pressure (760 mm Hg).

Linear alkanes, preferably of plant origin, comprising from 7 to 15 carbon atoms, in particular from 9 to 14 carbon atoms, and more particularly from 11 to 13 carbon atoms. By way of example of a linear alkane which is suitable for the invention, mention may be made of the alkanes described in the patent applications of Cognis WO 2007/068371, or WO2008 / 155059 (distinct alkane mixtures and differing from less a carbon). These alkanes are obtained from fatty alcohols, themselves obtained from coconut oil or palm oil. By way of example of a linear alkane suitable for the invention, mention may be made of n-heptane (C7), n-octane (C8), n-nonane (C9), n-decane (C10), n-undecane (C11), n-dodecane (C12), n-tridecane (C13), n-tetradecane (C14), pentadecane (C15), and mixtures thereof, and in particular the mixture of n -undecane (C11) and n-tridecane (C13) described in Example 1 of Application WO2008 / 155059 from Cognis. Mention may also be made of n-dodecane (C12) and n-tetradecane (C14) sold by Sasol respectively under the references PARAFOL 12-97 and PARAFOL 14-97, as well as their mixtures. The linear alkane may be used alone or as a mixture of at least two different alkanes and differing from each other by a carbon number of at least 1, and in particular a mixture of at least two linear alkanes containing from 10 to 14 carbon atoms. carbon atoms differing from each other by a carbon number of at least 2, and in particular a mixture of volatile linear C11 / C13 alkanes or a mixture of linear C12 / C14 alkanes, in particular a n-butyl mixture. undecane / n-tridecane (such a mixture can be obtained according to Example 1 or Example 2 of WO 2008/155059).

Alternatively or additionally, the composition produced may comprise at least one volatile silicone oil or solvent compatible with a cosmetic use. By silicone oil is meant an oil containing at least one silicon atom, and in particular containing Si-O groups. According to one embodiment, said composition comprises less than 10% by weight of volatile silicone oil (s), relative to the total weight of the composition, better still less than 5% by weight, or even is oil-free volatile silicone. As silicone volatile oil, mention may be made of cyclic polysiloxanes, linear polysiloxanes and mixtures thereof. Volatile linear polysiloxanes that may be mentioned include hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, tetradecamethylhexasiloxane and hexadecamethylheptasiloxane. Cyclic volatile polysiloxanes that may be mentioned include hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane and dodecamethylcyclohexasiloxane. Alternatively or additionally, the composition produced may comprise at least one volatile fluorinated oil. By fluorinated oil is meant an oil containing at least one fluorine atom.

As fluorinated volatile oil, there may be mentioned nonafluoromethoxybutane or perfluoromethylcyclopentane, and mixtures thereof. A composition according to the invention is preferably free of volatile oil. However, at least one volatile oil may be present in a total content ranging from 0.05% to 20% by weight, relative to the total weight of the composition, preferably ranging from 0.1% to 15% by weight, and preferably ranging from 0.1% to 10% by weight. In particular, the volatile oil may be present in the composition in a content ranging from 0.5 to 5% by weight relative to the total weight of the composition. According to a preferred embodiment, a composition according to the invention comprises less than 5% by weight of volatile oil (s) relative to the total weight of the composition. Pasty fatty substance A composition according to the invention may comprise at least one pasty fatty substance. For the purposes of the present invention, the term "pasty fatty substance" is intended to mean a lipophilic fat compound with a reversible solid / liquid state change and comprising, at a temperature of 23 ° C., a liquid fraction and a solid fraction. In other words, the starting melting temperature of the pasty compound may be less than 23 ° C. The liquid fraction of the pasty compound measured at 23 ° C. can represent 9 to 97% by weight of the compound. This liquid fraction at 23 ° C is preferably between 15 and 85%, more preferably between 40 and 85% by weight. Preferably, the pasty fatty substances have an end-of-melting temperature of less than 60 ° C. Preferably, the pasty fatty substances have a hardness less than or equal to 6 MPa. Preferably, the pasty fatty substances have a crystalline organization in the solid state, visible by X-ray diffraction characterizations. Within the meaning of the invention, the melting point corresponds to the temperature of the most endothermic peak observed in analysis. thermal (DSC) as described in ISO 11357-3; 1999. The melting point of a paste or a wax can be measured using a differential scanning calorimeter (DSC), for example the calorimeter sold under the name "DSC Q2000" by the company TA Instruments .

As regards the measurement of the melting temperature and the determination of the end-of-melting temperature, the sample preparation and measurement protocols are as follows: A sample of 5 mg of pasty fatty substance preheated to 80 ° C. and taken from below Magnetic stirring using an equally heated spatula is placed in an airtight aluminum capsule, or crucible. Two tests are carried out to ensure the reproducibility of the results. The measurements are carried out on the calorimeter aroused. The oven is subjected to a nitrogen sweep. Cooling is ensured by the RCS 90 heat exchanger.

The sample is then subjected to the following protocol by being first brought to a temperature of 20 ° C. and then subjected to a first temperature rise ranging from 20 ° C. to 80 ° C., at the heating rate of 5 ° C. / minute, then cooled from 80 ° C to -80 ° C at a cooling rate of 5 ° C / minute and finally subjected to a second temperature rise from -80 ° C to 80 ° C at a heating rate 5 ° C / minute. During the second temperature rise, the variation of the power difference absorbed by the empty crucible and the crucible containing the pasty or wax sample is measured as a function of temperature. The melting point of the compound is the value of the temperature corresponding to the peak apex of the curve representing the variation of the difference in power absorbed as a function of the temperature.

The end of melting temperature corresponds to the temperature at which 95% of the sample melted. The liquid fraction by weight of the pasty compound at 23 ° C. is equal to the ratio of the enthalpy of fusion consumed at 23 ° C. to the heat of fusion of the pasty compound. The heat of fusion of the pasty compound is the enthalpy consumed by the compound to pass from the solid state to the liquid state. The pasty compound is said to be in the solid state when the entirety of its mass is in crystalline solid form. The pasty compound is said to be in a liquid state when all of its mass is in liquid form. The melting enthalpy of the pasty compound is equal to the integral of the whole of the melting curve obtained with the aid of the calorimeter evoked, with a rise in temperature of 5 or 10 ° C. per minute, according to the ISO standard. 11357-3: 1999. The enthalpy of fusion of the pasty compound is the amount of energy required to pass the compound from the solid state to the liquid state. It is expressed in J / g. The enthalpy of fusion consumed at 23 ° C. is the amount of energy absorbed by the sample to change from the solid state to the state that it exhibits at 23 ° C. consisting of a liquid fraction. and a solid fraction. The liquid fraction of the pasty compound measured at 32 ° C is preferably 30 to 100% by weight of the compound, preferably 50 to 100%, more preferably 60 to 100% by weight of the compound. When the liquid fraction of the pasty compound measured at 32 ° C. is equal to 100%, the temperature of the end of the melting range of the pasty compound is less than or equal to 32 ° C. The liquid fraction of the pasty compound measured at 32 ° C. is equal to the ratio of the enthalpy of fusion consumed at 32 ° C. to the heat of fusion of the pasty compound. The heat of fusion consumed at 32 ° C. is calculated in the same way as the heat of fusion consumed at 23 ° C. With regard to the hardness measurement, the sample preparation and measurement protocols are as follows: The pasty fatty substance is placed in a mold 75 mm in diameter which is filled to about 75% of its height. In order to overcome the thermal past and control the crystallization, the mold is placed in the Vôtsch VC0018 programmable oven where it is first heated to 80 ° C for 60 minutes, then cooled from 80 ° C to 0 ° C at a cooling rate of 5 ° C / minute, then allowed to stabilize at 0 ° C for 60 minutes, and then temperature rise from 0 ° C to 20 ° C, at a rate of heating rate of 5 ° C / minute, then left at the stabilized temperature of 20 ° C for 180 minutes. The compression force measurement is performed with the Swantech TA / TX2i texurometer. The mobile used is chosen according to the texture: 25 - cylindrical steel roll of 2mm diameter for very rigid raw materials; - Cylindrical 12mm diameter steel mobile for inferior raw materials; The measurement comprises 3 steps: a first step after automatic detection of the surface of the sample where the mobile moves at the measuring speed of 0.1 mm / s, and penetrates into the pasty fatty substance at a depth of penetration 0.3 mm, the software records the value of the maximum force reached; a second so-called relaxation stage where the mobile stays at this position for one second and where the force is noted after 1 second of relaxation; finally a third so-called withdrawal step where the mobile returns to its initial position at the speed of 1 mm / s and the energy of withdrawal of the probe (negative force) is recorded. The value of the hardness measured in the first step corresponds to the maximum compression force measured in Newton divided by the area of the cylinder of the texturometer expressed in mm 2 in contact with the pasty fatty substance. The value of hardness obtained is expressed in mega-pascals or MPa. The pasty fatty substance is preferably chosen from synthetic compounds and compounds of plant origin. A pasty compound can be obtained synthetically from starting materials of plant origin. The pasty compound is advantageously chosen from - lanolin and its derivatives; Vaseline, in particular that whose name I NCI is petrolatum and marketed under the name ULTIMA WHITE PET USP by Perenco, polyol ethers chosen from pentaerythritol and polyalkylene glycol ethers, fatty alcohol ethers. and sugar, and mixtures thereof, pentaerythritol ether and polyethylene glycol having 5 oxyethylenated units (50E) (CTFA name: PEG-5 Pentaerythrityl Ether), pentaerythritol ether and polypropylene glycol comprising 5 oxypropylene units (5 OP) (CTFA name: PPG-5 Pentaerythrityl Ether), and mixtures thereof, and more especially the PEG-5 Pentaerythrityl Ether mixture, PPG-5 Pentaerythrityl Ether and soybean oil, sold under the name "Lanolide" by the company Vevy, mix where the components are in a 46/46/8 weight ratio: 46% PEG-5 Pentaerythrityl Ether, 46% PPG-5 Pentaerythrityl Ether and 8% soybean oil. - Polymeric or non-polymeric silicone compounds - Polymeric fluorinated compounds or non-vinyl polymers, in particular: homopolymers and copolymers of olefins - Homopolymers and copolymers of hydrogenated dienes - Linear or branched oligomers, homopolymers or copolymers of alkyl (meth) acrylates preferably having a Cg-C30 alkyl group; homo- and copolymeric oligomers of vinyl esters having group-C al alkyl groups; homo- and copolymer oligomers of vinyl ethers having C en-C al alkyl groups; the liposoluble polyethers resulting from the polyetherification between one or more C2-C100 diols, preferably C2-C50 diols, the esters, and / or their mixtures. The pasty compound is preferably a polymer, especially a hydrocarbon polymer. Among the liposoluble polyethers, copolymers of ethylene oxide and / or of propylene oxide with long-chain C 6 -C 30 alkylene oxides are preferred, more preferably such as the weight ratio of ethylene oxide. and / or propylene oxide with alkylene oxides in the copolymer is from 5:95 to 70:30. In this family, mention will in particular be made of copolymers such as long-chain alkylene oxides are arranged in blocks having an average molecular weight of 1,000 to 10,000, for example a polyoxyethylene / polydodecyl glycol block copolymer such as dodecanediol ethers (22). mol) and polyethylene glycol (45%) marketed under the tradename ELFACOS ST9 by Akzo Nobel. Among the esters, the following are particularly preferred: the esters of an oligomeric glycerol, in particular the diglycerol esters, in particular the adipic acid and glycerol condensates, for which part of the hydroxyl groups of the glycerols have reacted with a mixture of fatty acids such as stearic acid, capric acid, stearic acid and isostearic acid and 12-hydroxystearic acid, preferably such as bis-diglyceryl polyacyladipate-2 sold under the trademark Softisan 649 by Sasol, - arachidyl propionate sold under the trade name Waxenol 801 by Alzo, - phytosterol esters, - triglycerides of fatty acids and their derivatives, such as, for example, triglycerides of fatty acids, especially in 010-018, partially or fully hydrogenated such as those sold under the reference Softisan 100 by the company Sasol, pentaerythritol esters and mixtures thereof. the diol dimer and diacid dimer esters, if appropriate, esterified on their (their) alcohol (s) or free acid (s) function (s) with acidic radicals or alcohols, especially dimer dilinoleate esters, such esters may in particular be chosen from the following INCI nomenclature esters: bis-behenyl / isostearyl / phytosteryl dimerdilinoleyl dimerdilinoleate (Plandool G), phytosteryl / isosteryl / cetyl / stearyl / behenyl dimerdilinoleate (Plandool H or Plandool S), and their mixtures, - mango butter, such as that marketed under the reference Lipex 203 by the company AARHUSKARLSHAMN, - shea butter, in particular the one whose INCI name is Butyrospermum Parkii Butter, such as that marketed under the Sheasoft® reference by the company AARHUSKARLSHAMN, - and their mixtures.

Among the pasty compounds, bishephenyl isostearyl / phytosteryl dimer dilinoleyl, bis-diglyceryl polyacyladipate-2, dimerized hydrogenated castor oil dilinoleate, for example RISOCAST-DA-L sold by KOKYU ALCOHOL KOGYO, are preferably chosen. hydrogenated castor oil isostearate, for example SALACOS HCIS (VL) sold by NISSHIN OIL, mango butter, shea butter, copolymers of vinylpyrrolidone / eicosene, or their mixture (s). A composition according to the invention is preferably free of pasty fatty substances. However, a composition according to the invention may comprise one or more pasty fatty substances with a total content greater than or equal to 0.01% by weight relative to the total weight of the composition, for example between 0.1 and 5% by weight relative to total weight of the composition. Anionic Associative Polymers A composition according to the invention comprises at least one anionic associative polymer.

Within the meaning of the present invention, associative polymer is understood to mean any amphiphilic polymer comprising at least one hydrophobic chain, therefore a fatty part, and at least one hydrophilic part. Preferably, the anionic associative polymer (s) according to the invention is (are) soluble in water at neutral or basic pH.

Preferably, the anionic associative polymer (s) according to the invention is (are) thus in the form of aqueous dispersions, that is to say in the form of polymer particles dispersed in water at acidic pH. Preferably, the anionic associative polymer (s) according to the invention is (are) not crosslinked. Preferably, the associative anionic polymer (s) according to the invention is (are) linear. The weight-average molecular weight (Mw) of the copolymer (s) used in the cosmetic composition according to the present invention is preferably between 500 and 5,000,000 g / mol. It is more particularly between 200 000 and 2 000 000 g / mol and even more preferably between 400 000 and 800 000 g / mol. The anionic associative polymer (s) according to the invention is (are) preferably a block copolymer (s). Preferably, the (the) copolymer (s) according to the invention comprises (s) three kinds of monomers, also called terpolymers. The anionic associative polymer (s) used in the present invention comprise: at least one skeletal chain, or skeleton, preferably one, derived from at least one monomer comprising at least one less a carboxylic acid and at least one α, β-monoethylenic unsaturation, their ester (s), their salt (s), and their mixture, at least one hydrophobic chain, preferably a graft; hydrophobic, extending laterally relative to the backbone, - at least one alkoxylated or glycerolated spacer connecting said skeletal chain and said hydrophobic chain (s) .Presentedly, the associative polymer (s) (s) anionic agent (s) used in the present invention comprises (include) a skeletal chain derived from at least one (meth) acrylic acid monomer, their ester (s), their salt (s), Thus, the anionic associative polymer (s) used in the present invention comprises (for example) a skeletal chain derived from at least one monomer of acrylic acid, methacrylic acid, their ester (s), their salt (s), and their mixture. The hydrophobic chain (s) can (may) be reduced in number with respect to the backbone. It (s) can be distributed randomly (random copolymers) or preferably in the form of sequences, or grafts (block copolymers or block copolymers), preferably in the form of sequences. . The hydrophobic chain (s) preferably comprises a linear chain saturated with C8-O24, preferably with C12-O20, more preferably with O16-O2. This (these) chain ( s) hydrophobic (s) preferably comprises a fatty alcohol or a fatty acid C8-024, preferably C12-020, more preferably C16-022. Preferably, the hydrophobic chain (s) are chosen from a stearyl group, a behenyl group, and their mixture, in particular from stearyl alcohol, behenyl alcohol. Said (said) hydrophobic chain (s) and their respective spacers preferably extend in continuity from one another, laterally relative to said skeletal chain. The spacer directly or indirectly connects said skeleton and said hydrophobic chain.

Preferably, the spacer (s) is (are) hydrophilic (s). These (these) spacer (s) contain C 2-8 alkoxy groups, preferably O 2. Advantageously, it (s) comprises (include) between 15 to 50 alkoxyl groups, preferably from 15 to 50 oxyethylene groups. Preferably, it (s) comprises (include) 20 or 25 alkoxyl groups, preferably 20 or 25 oxyethylene groups.

The spacer (s) and the hydrophobic chain (s) advantageously together form a C 2 -C 8, preferably O 2, alkoxylated ether of C 8 -C 24, preferably C 12, fatty alcohols. -022, more preferably C16-022, or an alkoxylated C8-O24 fatty acid ester, in O12-O22, more preferably in O16-O22, preferably a C2-C8 alkoxylated ether, preferably in O2-C22; , fatty alcohols C8-024, preferably 012-022, more preferably 016-022 ,. This alkoxylated fatty alcohol ether or this alkoxylated fatty acid ester preferably comprises from 15 to 50 alkoxylated groups, preferably from 15 to 50 oxyethylene groups. Preferably, said alkoxylated fatty alcohol ether is selected from said oxyethylenated ether of oxyethylenated stearyl alcohol and said oxyethylenated ether of oxyethylenated behenyl alcohol. Preferably, said alkoxylated fatty acid ester is chosen from said oxyethylenated stearic acid ester, for example with 40 oxyethylene groups, also called PEG-40 stearate. According to a particular embodiment, the hydrophilic spacer and the hydrophobic chain are connected, before polymerization, by esterification with a (meth) acrylic acid. According to an alternative embodiment, the hydrophilic spacer and the hydrophobic chain may be connected to the skeletal chain after polymerization of the skeletal chain, by random esterification of said skeletal chain. Among the anionic associative polymer (s) according to the invention, mention may be made of: copolymers derived from (meth) acrylic acid / C1-C8 alkyl (meth) acrylate more preferably C1-O3, preferably C2 / (meth) acrylate fatty alcohol at 08-024, better C12-022, preferably C16-022, more preferably still at 018 or C22 and their mixture, alkoxylated or glycerol, such as ACULYN products marketed by the company ROHM &HAAS; In particular, among the anionic associative polymers, preference is given to: copolymers derived from acrylic acid / ethyl acrylate / polyoxyethylene stearyl methacrylate, for example using 20 moles of ethylene oxide, such as product sold under the name ACULYN 22® by the company ROHM &HAAS; copolymers derived from acrylic acid / ethyl acrylate / polyoxyethylenated behenyl methacrylate, for example using 25 moles of ethylene oxide, such as the product sold under the name ACULYN 28® by the company ROHM &HAAS; 25 - and their mixture. Preferably, the anionic associative polymer (s) according to the invention is (are) chosen from the following INCI copolymers: ACRYLATES / STEARETH-20 METHACRYLATE COPOLYMER, ACRYLATES / BEHENETH METHACRYLATE COPOLYMER, and mixtures thereof. The total content of anionic associative polymer (s) is greater than or equal to 0.1% by weight, better still 0.3% by weight, relative to the total weight of the composition, preferably between 0.3 and 0.3% by weight. 5% by weight, more preferably between 0.3 and 4% by weight relative to the total weight of the composition.

The total content of anionic associative polymer (s) and the total content of amphiphilic wax (es) are such that the weight ratio of anionic associative polymer (s) to wax (s) amphiphile (s) is greater than or equal to 1/75, better to 1/60, preferably inclusive between 1/50 and 1/5, more preferably between 1/50 and 1/10. The total content of anionic associative polymer (s) and the total content of wax (es) are such that the weight ratio of associative anionic polymer (s) to wax (es) is greater than or equal to 1/100, better at 1/75, preferably inclusive between 1/50 and 1/5, more preferably between 1/50 and 1/10.

Preferably, a composition according to the invention comprises, as the main emulsifying system, the amphiphilic wax (es) and the anionic associative polymer (s) conforming to the invention. By "main emulsifying system" is meant a system which, in its absence, does not lead to the formation of a stable composition. By "stable" is meant a composition which, after having been placed in an oven at 45 ° C. for two months, does not show, after returning to ambient temperature (20 ° C.), pearls perceptible to the touch, when thin layer of the composition is sheared between the fingers.

Additional Emulsifying System A composition according to the invention may comprise an additional emulsifying system. This additional emulsifying system preferably comprises one or more additional surfactants. This or these agent (s) surfactant (s) are more generally present in a content ranging from 0.1 to 30%, and more preferably from 0.3% to 15% by weight relative to the total weight of the composition. An additional emulsifying surfactant suitably selected for obtaining an oil-in-water emulsion is generally used. In particular, it is possible to use an emulsifying surfactant having, at 25 ° C., an HLB balance (hydrophilic-lipophilic balance) in the Griffin sense, greater than or equal to 8. The HLB value according to Griffin is defined in J. Soc. Cosm. Chem. 1954 (volume 5), pages 249-256. These additional surfactants may be chosen from nonionic, anionic, cationic and amphoteric surfactants. Reference can be made to the document "Encyclopedia of Chemical Technology, KIRK-OTHM ER", Volume 22, p. 333-432, 5th edition, 1979, WILEY, for the definition of the properties and emulsifying functions of surfactants, in particular p. 347-377 of this reference, for anionic, amphoteric and nonionic surfactants. The additional surfactants preferably used in the composition according to the invention are chosen from: a) nonionic surfactants of H LB greater than or equal to 8 at 25 ° C., used alone or as a mixture; mention may be made in particular of: glycerol ethers, oxyethylenated and / or oxypropylenated, which can comprise from 1 to 150 oxyethylene and / or oxypropylene units; oxyethylenated and / or oxypropylenated ethers (which may comprise from 1 to 150 oxyethylene and / or oxypropylene units) of fatty alcohols, in particular of 08-024, and preferably of C 12 -C 18, such as the oxyethylenated ether of the stearyl alcohol containing 20 oxyethylene units (CTFA name "Steareth-20"), such as BRIJ 78 sold by the company UNIQEMA, the oxyethylenated ether of cetearyl alcohol containing 30 oxyethylene units (CTFA name "Ceteareth-30") and the oxyethylenated ether of the mixture of C12-C15 fatty alcohols comprising 7 oxyethylene units (CTFA name "C12-15 Pareth-7"), such as that marketed under the name NEODOL 25-7® by Shell Chemicals; the fatty acid esters, in particular C 8 -C 24, and preferably C 16 -C 22, and polyethylene glycol (or PEG) (which may comprise from 1 to 150 oxyethylene units), such as PEG-50 stearate and PEG-40 monostearate marketed under the name MYRJ 52P® by the company UNIQEMA; the fatty acid esters, in particular C 8 -C 24, and preferably C 16 -C 22, and oxyethylenated and / or oxypropylenated glycerol ethers (which may contain from 1 to 150 oxyethylene and / or oxypropylene units), such as polyoxyethylenated glyceryl monostearate with 200 oxyethylene units, sold under the name Simulsol 220 TM® by the company SEPPIC; polyoxyethylenated glyceryl stearate with 30 oxyethylene units, such as the product TAGAT S® sold by the company GOLDSCHMIDT, the polyoxyethylenated glyceryl oleate with 30 oxyethylene units, such as the product TAGAT O® sold by the company GOLDSCHMIDT, the polyoxyethylated glyceryl cocoate 30 oxyethylene units, such as the product VARIONIC LI 13® sold by the company SHEREX, the polyoxyethylenated glyceryl isostearate with 30 oxyethylene units, such as the product TAGAT L® sold by the company GOLDSCHMIDT and the polyoxyethylenated glyceryl laurate with 30 oxyethylene units, such as the product TAGAT I® from GOLDSCHMIDT; fatty acid esters, especially of C 8 -C 24, and preferably C 16 -C 22, and of oxyethylenated and / or oxypropylene sorbitol ethers (which may contain from 1 to 150 oxyethylene and / or oxypropylene units), such as polysorbate 60 sold under the name Tween 60® by the company Uniqema; dimethicone copolyol, such as that sold under the name Q25220® by the company Dow Corning; dimethicone copolyol benzoate, such as that sold under the name FINSOLV SLB 101® and 201® by the company FINTEX; copolymers of propylene oxide and ethylene oxide, also known as 0E / OP polycondensates, and mixtures thereof.

The polycondensates OE / OP are more particularly copolymers consisting of polyethylene glycol and polypropylene glycol blocks, such as, for example, polyethylene glycol / polypropylene glycol / polyethylene glycol triblock polycondensates. These triblock polycondensates have, for example, the following chemical structure: H- (O-CH 2 -CH 2) a- (O-CH (CH 3) -CH 2) b- (O-CH 2 -CH 2) a-OH, in which formula from 2 to 120, and b ranges from 1 to 100. The polycondensates 0E / OP preferably have a weight average molecular weight ranging from 1,000 to 15,000, and better ranging from 2,000 to 13,000. Advantageously, said 0E polycondensates / OP have a cloud temperature, at 10 g / l in distilled water, greater than or equal to 20 ° C, preferably greater than or equal to 60 ° C. The cloud temperature is measured according to the ISO 1065 standard. As polycondensate OE / OP that may be used according to the invention, mention may be made of the polyethylene glycol / polypropylene glycol / polyethylene glycol triblock polycondensates sold under the trade names SYNPERONIC® such as the SYNPERONIC PE / L44® and SYNPERONIC PE / F127® by ICI. b) the nonionic surfactants of HLB lower than 8 at 25 ° C, optionally combined with one or more nonionic surfactants of HLB greater than 8 at 25 ° C, as mentioned above, such as: - the esters and oose ethers such as sucrose stearate, sucrose cocoate, sorbitan stearate and mixtures thereof, for example Arlatone 2121® marketed by ICI or SPAN 65V from UNIQEMA; esters of fatty acids, in particular of C 8 -C 24, and preferably of C 16 -C 22, and of polyol, in particular glycerol or sorbitol, such as glyceryl stearate, for example sold under the name TEGIN M®; by the company GOLDSCHMIDT, glyceryl laurate such as the product sold under the name IMWITOR 312® by the company HU LS, polyglyceryl stearate-2, sorbitan tristearate, and glyceryl ricinoleate; oxyethylenated and / or oxypropylenated ethers, such as the oxyethylenated ether of stearyl alcohol with 2 oxyethylene units (CTFA name "Steareth-2"), such as BRIJ 72 sold by the company UNIQEMA; the mixture of cyclomethicone / dimethicone copolyol sold under the name Q2-3225C® by the company Dow Corning; c) anionic surfactants such as: - fatty acid salts in 016-030, especially amino salts such as triethanolamine stearate or 2-amino-2-methylpropane-1,3-diol stearate; polyoxyethylenated fatty acid salts, especially the amine salts or the alkali metal salts, and mixtures thereof; phosphoric esters and their salts, such as "DEA oleth-10 phosphate" 20 (Crodafos N 10N from CRODA) or monocotyl monopotassium phosphate (Amphisol K from Givaudan or ARLATONE MAP 160K from the company UNIQEMA); sulphosuccinates such as "Disodium PEG-5 citrate lauryl sulphosuccinate" and "Disodium ricinoleamido MEA sulphosuccinate"; Alkyl ether sulfates such as sodium lauryl ether sulphate; isethionates; acylglutamates, such as "Disodium hydrogenated tallow glutamate" (AMISOFT HS-21 R® marketed by the company AJINOMOTO), and mixtures thereof. Examples of cationic surfactants that may be mentioned include: alkylimidazolidiniums such as isostearylethylimidonium ethosulphate, ammonium salts such as (C 12-30 alkyl) halides; (C1-4alkyl) alkyl such as N, N, N-trimethyl-1-docosanaminium chloride (or Behentrimonium chloride) The compositions according to the invention may also contain one or more amphoteric surfactants such as N-acylamino acids such as N-alkyl-aminoacetates and disodium cocoamphodiacetate, and amine oxides such as stearamine oxide, or silicone surfactants such as dimethicone copolyols phosphates such as that sold under the name PECOSIL PS 100® by the company Phoenix Chemical. .

According to a particular embodiment, the cosmetic composition according to the present invention comprises less than 1%, preferably less than 0.5% by weight of triethanolamine, and better still, is free of triethanolamine. According to a particular embodiment, the cosmetic composition according to the present invention comprises less than 1%, preferably less than 0.5% by weight of triethanolamine stearate, and better still, is free of triethanolamine stearate. Preferably, a composition according to the invention comprises less than 2% by weight of additional emulsifying system relative to the total weight of the composition, or even less than 1% by weight, and more preferably is free of additional surfactant. In particular, a composition according to the invention is preferably free of additional ionic surfactant, in particular additional anionic surfactant and additional nonionic surfactant. Film-forming polymer The compositions according to the present application preferably comprise at least one hydrophilic or lipophilic, preferably hydrophilic, film-forming polymer. In the present application, the term "film-forming polymer" is intended to mean a polymer capable of forming on its own or in the presence of a film-forming auxiliary agent a macroscopically continuous deposit, and preferably a cohesive deposit, and better still a deposit of which the cohesion and the mechanical properties are such that said deposit can be isolable and manipulable in isolation, for example when said deposit is made by casting on a non-stick surface such as a Teflon or silicone surface. In general, the dry matter content of "film-forming polymer" of the compositions according to the present application ranges from 0.1 to 40%, preferably from 0.5 to 30% and better still from 1 to 20% by weight, relative to to the total weight of the composition, the hydrophilic film-forming polymer may be a water-soluble polymer or may be dispersed in an aqueous medium. Among the film-forming polymers that may be used in the composition of the present invention, mention may be made of synthetic polymers, of radical type or of polycondensate type, polymers of natural origin, and mixtures thereof. Examples of water-soluble film-forming polymers that may be mentioned include: proteins, such as proteins of vegetable origin, such as wheat or soy proteins; proteins of animal origin such as keratins, for example keratin hydrolysates and keratin sulfonates; Cellulose polymers such as hydroxyethyl cellulose, hydroxypropyl cellulose, methyl cellulose, ethyl hydroxyethyl cellulose, carboxymethyl cellulose, and quaternized cellulose derivatives; acrylic polymers or copolymers, such as polyacrylates or polymethacrylates; Vinyl polymers, such as polyvinylpyrrolidones, copolymers of methylvinyl ether and malic anhydride, copolymer of vinyl acetate and crotonic acid, copolymers of vinylpyrrolidone and vinyl acetate; copolymers of vinylpyrrolidone and caprolactam; polyvinyl alcohol; Anionic, cationic, amphoteric or nonionic chitin or chitosan polymers, gum arabic, guar gum, xanthan derivatives, karaya gum, acacia gum; alginates and carrageenans; Glycosaminoglycans, hyaluronic acid and its derivatives; - shellac resin, sandaraque gum, dammars, elemis, copals; deoxyribonucleic acid; mucopolysaccharides such as chondroitin sulphates, and mixtures thereof. The film-forming polymer may also be present in the composition in the form of particles in dispersion in an aqueous phase, generally known under the name of latex or pseudolatex. The techniques for preparing these dispersions are well known to those skilled in the art.

As the aqueous dispersion of film-forming polymer, it is possible to use the acrylic dispersions sold under the names Neocryl XK-90®, Neocryl A1070®, Neocryl A-1090®, Neocryl® BT-62®, Neocryl A-1079® and Neocryl A-523®. by the company AVECIA-NEORESINS, Dow Latex 432® by the company DOW CHEMICAL, Daitosol 5000 AD® or Daitosol 5000 SJ® by the company DAITO KASEY KOGYO; Syntran 5760® by Interpolymer Allianz Opt® by Rohm and Haas or the aqueous polyurethane dispersions sold under the names Neorez R-981® and Neorez R-974® by the company Avecia-Neoresins, Avalure UR-405 ®, Avalure UR-410®, Avalure UR-425®, Avalure UR-450®, Sancure 875®, Avalure UR-445® and Sancure 2060® by NOVEON, Impranil 85® by BAYER, Aquamere H-1511 ® by the company HYDROMER; the sulpopolyesters sold under the brand name Eastman AQ® by Eastman Chemical Products, vinyl dispersions such as Mexomer PAM®, aqueous polyvinyl acetate dispersions such as "Vinybran®" from Nisshin Chemical or those marketed by the company UNION CARBIDE, aqueous dispersions of terpolymer vinyl pyrrolidone, dimethylaminopropyl methacrylamide and lauryldimethylpropylmethacrylamidoammonium chloride such as Styleze W-ISP, aqueous dispersions of polyurethane / polyacrylic hybrid polymers such as those sold under the references "Hybridur®" by the company AIR PRODUCTS or "Duromer®" from NATIONAL STARCH, the core / shell dispersions: for example those marketed by ATOFINA under the reference Kynar (core: fluoréshell: acrylic) or those described in US 5,188,899 (core silica - shell: silicone) and mixtures thereof.

A composition according to the invention may also alternatively comprise or additionally a lipophilic polymer which may be in solution or in dispersion in a non-aqueous solvent phase. Dyestuffs The compositions in accordance with the invention comprise at least one dyestuff. This (or these) dyestuff (s) is (or are) preferably chosen from pulverulent materials, liposoluble dyes, water-soluble dyes, and mixtures thereof. Preferably, the compositions according to the invention comprise at least one pulverulent dyestuff. The pulverulent dyestuffs may be chosen from pigments and nacres, preferably from pigments.

The pigments may be white or colored, mineral and / or organic, coated or uncoated. Mention may be made, among mineral pigments, of metal oxides, in particular titanium dioxide, optionally surface-treated, oxides of zirconium, zinc or cerium, and also oxides of iron, titanium or chromium, manganese violet, ultramarine blue, chromium hydrate and ferric blue. Among the organic pigments, mention may be made of carbon black, D & C type pigments, and lacquers based on cochineal carmine, barium, strontium, calcium, aluminum. The nacres may be chosen from white pearlescent pigments such as 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, titanium mica with an organic pigment of the aforementioned type as well as pearlescent pigments based on bismuth oxychloride. Liposoluble dyes are for example Sudan Red, D & C Red 17, D & C Green 6, [3-carotene, soybean oil, Sudan Brown, D & C Yellow 11, D & C Violet 2, D & C Orange 5 , the yellow quinoline, the annatto.

Preferably, the pigments contained in the compositions according to the invention are chosen from metal oxides. These dyestuffs may be present in a content ranging from 0.01 to 30% by weight relative to the total weight of the composition, in particular from 3 to 15% by weight relative to the total weight of the composition.

Preferably, the dye (s) is (are) chosen from one or more metal oxide (s) present (s) at a content greater than or equal to 2% by weight relative to total weight of the composition, advantageously between 3 and 15% by weight, based on the total weight of the composition.

Charges The compositions according to the invention may also comprise at least one filler. The fillers may be selected from those well known to those skilled in the art and commonly used in cosmetic compositions. The fillers can be mineral or organic, lamellar or spherical. Mention may be made of talc, mica, silica, kaolin, polyamide powders such as Nylon® sold under the name Orgasol® by Atochem, poly-p-alanine and polyethylene, and tetrafluoroethylene polymer powders. such as Teflon®, lauroyl-lysine, starch, boron nitride, expanded polymeric hollow microspheres such as those of polyvinylidene chloride / acrylonitrile such as those sold under the name Expancel® by Nobel Industrie, acrylic powders such as those sold under the name Polytrap® by the company Dow Corning, polymethyl methacrylate particles and silicone resin microspheres (Toshiba's Tospearls®, for example), precipitated calcium carbonate, carbonate and magnesium hydro-carbonate, hydroxyapatite, hollow silica microspheres (Silica Beads® from MAPRECOS), glass or ceramic microcapsules metallic amines derived from organic carboxylic acids having from 8 to 22 carbon atoms, and in particular from 12 to 18 carbon atoms, for example zinc, magnesium or lithium stearate, zinc laurate, magnesium myristate. It is also possible to use a compound capable of swelling with heat and in particular thermally expandable particles such as unexpanded microspheres of copolymer of vinylidene chloride / acrylonitrile / methyl methacrylate or copolymer of acrylonitrile homopolymer, for example those sold respectively under the references Expancel® 820 DU 40 and Expancele007VVU by the company AKZO NOBEL. The fillers may represent from 0.1 to 25%, in particular from 0.2 to 20% by weight relative to the total weight of the composition.

Fibers The compositions in accordance with the invention may also comprise at least one fiber which makes it possible to improve the lengthening effect. In the case of producing a top coat containing fibers intended to coat a base coat composition in accordance with the invention, the inventors have observed that the non-volatile oil according to the invention facilitates the positioning of the fibers at the end of the natural eyelashes. By "fiber" it is necessary to understand an object of length L and of diameter D such that L is much greater than D, D being the diameter of the circle in which the section of the fiber is inscribed. In particular, the L / D ratio (or form factor) is chosen in the range from 3.5 to 2500, in particular from 5 to 500, and more particularly from 5 to 150. The fibers that can be used in the composition of the The invention may be fibers of synthetic or natural, mineral or organic origin. They can be short or long, unitary or organized, for example braided, hollow or full.

Their shape can be any and in particular of circular or polygonal section (square, hexagonal or octagonal) depending on the specific application envisaged. In particular, their ends are blunt and / or polished to avoid injury. In particular, the fibers have a length ranging from 1 μm to 10 mm, in particular from 0.1 mm to 5 mm and more particularly from 0.3 mm to 3.5 mm. Their section may be in a circle with a diameter ranging from 2 nm to 500 μm, in particular ranging from 100 nm to 100 μm and more particularly from 1 μm to 50 μm. The weight or titer of the fibers is often given in denier or decitex and represents the weight in gram for 9 km of yarn. The fibers according to the invention may in particular have a title chosen in the range from 0.15 to 30 denier and in particular from 0.18 to 18 denier.

The fibers that can be used in the composition of the invention may be chosen from rigid or non-rigid fibers, they may be of synthetic or natural origin, mineral or organic. Furthermore, the fibers may or may not be treated on the surface, coated or uncoated, colored or unstained.

As fibers that can be used in the composition according to the invention, mention may be made of non-rigid fibers such as polyamide fibers (nylon ()) or rigid fibers such as polyimide-amide fibers, such as those sold under the name KERMEL. ®, KERMEL TECH® by the company RHODIA or poly- (p-phenyleneterephthalamide) (or aramid) sold especially under the name Kevlar® by the company DuPont de Nemours. The fibers may be present in the composition according to the invention in a content ranging from 0.01% to 10% by weight, relative to the total weight of the composition, in particular from 0.1% to 5% by weight, and more particularly from 0.3% to 3% by weight.

Cosmetic active ingredients The compositions in accordance with the invention may also comprise at least one cosmetic active agent. As cosmetic active agents that can be used in the compositions in accordance with the invention, mention may in particular be made of antioxidants, preservatives, perfumes, neutralizers, emollients, thickeners, coalescing agents, plasticizers, moisturizers and vitamins. and especially solar filters, and mixtures thereof.

Of course, those skilled in the art will take care to choose any additional additives and / or their amount so that the advantageous properties of the composition according to the invention are not, or not substantially impaired by the addition envisaged. Preferably, the composition according to the invention is not rinsed.

Advantageously, the composition is a makeup composition and in particular a mascara. ASSEMBLY A keratin fiber coating assembly adapted to the invention may comprise an applicator configured to apply said cosmetic composition for coating keratinous fibers, and if necessary a conditioning device adapted to receive said composition. Applicator The applicator may comprise means for smoothing and / or separating the keratin fibers, such as eyelashes or eyebrows, especially in the form of teeth, bristles or other reliefs. The applicator is arranged to apply the composition to the eyelashes or the eyebrows, and may comprise for example a brush or a comb.

The applicator can still be used for makeup finishing, on a region of eyelashes or eyebrows made up or loaded with the composition. The brush may comprise a twisted core and bristles caught between the turns of the core, or be carried out otherwise. The comb is for example made in one piece by molding plastic material. In some exemplary embodiments, the applicator element is mounted at the end of a rod, which may be flexible, which may contribute to improving comfort at the application.

Packaging device The packaging device may comprise a container intended to house the coating composition of the keratinous fibers. This composition can then be taken from the container by immersing the applicator therein.

This applicator may be integral with a closure element of the container. This closure element may form a gripping member of the applicator. This gripping member may form a cap to removably mount on said container by any suitable means such as screwing, latching, fitting or other. Such a container can thus reversibly accommodate said applicator.

This container may optionally be equipped with a wiper adapted to rid a surplus of product taken by the applicator. A process for applying the composition according to the invention to the eyelashes or the eyebrows may also comprise the following steps: forming a deposit of the cosmetic composition on the eyelashes or the eyebrows, leaving the deposit on the eyelashes or the eyebrows the deposit can dry. It should be noted that according to another embodiment the applicator can form a product container. In such a case a container may for example be provided in the gripping member and an internal channel may internally connect the gripping member to the relief elements application. Finally, it should be noted that the packaging and application assembly can be in the form of a kit, the applicator and the packaging device can be housed separately under the same packaging article. The preceding and following examples are given by way of illustration of the present invention and can not limit its scope. EXAMPLES 1 / Preparation of four mascara compositions outside the invention. Phase Ingredients Comparative composition Comparative composition Comparative composition Comparative composition with contents in 1 2 3 4 percentage G Esterified beeswax 22.7 - - - (APIFIL CG from GATTEFOSSE) G Beeswax - 22.7 - - polyglycerolated (CERA BELLINA WAX from KOSTER KEUNEN) G Mix of polyglycerolated waxes - - 22.7 - Vegetable (mimosa, jojoba, sunflower) (GATTEFOSSE HYDRACIRE S) G Paraffin - - - 22.7 G Pigments 5 5 5 5 A Water Qs 100 Qs 100 Qs 100 Qs 100 A Polymer associative anionic (ACULYN 22 from ROHM AND HAAS (DOW CHEMICAL)) - - - 2 A Potassium Hydroxide to - - - 0.2 50% in water A Hydroxyethylcellulose 0.9 0.9 0.9 0.9 A Preservative system qs qs qs qs5 2 / Preparation of three compositions According to the invention Phase Ingredients Composition Composition Composition with contents according to the invention according to the invention according to the invention percentage 5 6 7 G Beeswax 22.7 - - esterified (APIFIL CG from GATTEFOSSE) G Beeswax - 22.7 - polyglycerol (CERA BELLINA WAX from KOSTER KEUNEN) G Polyglycerolated vegetable wax - - 22.7 (mimosa, jojoba, sunflower) (HYDRACIRE S from GATTEFOSSE) G Pigments 7 7 7 A Water Qs 100 Qs 100 Qs 100 A Polymer associative 2 2 2 anionic (ACULYN 22 from ROHM AND HAAS (DOW CHEMICAL)) A Potassium Hydroxide to 50 ') / 0 in water 0.2 0.2 0.2 A Hydroxyethylcellulose 0.9 0.9 0.9 A System qs qs qs qs preservative These compositions were prepared as follows : i. Preparation of the fat phase (G) In a 500mL double jacketed skillet with hot oil circulation to control the temperature, the different waxes are melted. It is heated to about 9698 ° C. When the waxes are melted and homogenized, the pigments are added and then homogenized under Moritz (rotor stator stirring). ii. Preparation of the aqueous phase (A) A tall 600mL beaker is used. In this beaker is stirred slowly to the Rayneri, the amount of water needed, previously heated to the electric kettle.

Still under slow stirring are introduced successively the ingredients of the aqueous phase: the (co) polymers and potash and preservatives. Between each introduction, care must be taken to ensure the solubilization of the compound and the homogenization of the medium. The aqueous phase is then placed in a water bath (set point 90-92 ° C.) until the temperature of 88-90 ° C. is reached. iii. Emulsification When the two phases are at the desired temperature, the aqueous phase is added very slowly to the fatty phase, while gradually increasing the stirring. Stirring is maintained for 10 minutes. iv. Temperature reduction After emulsification, the skillet is placed in the Rayneri then equipped with a pale butterfly, it allows the mixing and homogenization during the descent in low shear temperature. The stirring speed is low so as not to incorporate air bubbles. Thanks to the oil bath, the temperature is gradually lowered to room temperature (20 ° C): in increments of 10 ° C. v. End of formulation The mascara thus obtained is transferred into an enclosed jar to prevent drying in contact with the air, it is then necessary to wait 24 hours to check the homogeneity of the formula and the good dispersion of the pigments. 2 / Protocols and Results The compositions prepared are then observed under a microscope, and then made up by applying these compositions with the aid of a brush.

For compositions 1, 2 and 3, a very coarse emulsion of wax and pigments, inhomogeneous and granular, is observed. The emulsion of the composition 3 is not stable, being out of phase at 45 ° C. For composition 4 the emulsion is not formed. For the compositions 5, 6 and 7 in accordance with the invention, a fine emulsion is observed with a wax grain (s) which is fine and well distributed (homogeneous). The compositions according to the invention are pleasant to the application, they have a fluid texture, the deposit is built layer after layer, the sheath composition well the eyelashes, the makeup is regular, the eyelashes fringe well deployed. In addition, the composition obtained is of good gloss. Moreover, the pigments are well dispersed. In addition, these compositions are stable at 4 and 45 ° C for two months.

It is understood that in the context of the present invention the weight percentages given for a compound or a family of compounds, are always expressed by weight of dry matter of the compound in question.

Throughout the application, the wording "comprising a" or "comprising a" means "comprising at least one" or "comprising at least" one unless the contrary is specified.

Claims (15)

REVENDICATIONS1. Cosmetic composition for coating keratin fibers of the emulsion type, comprising: - an aqueous phase, - at least one amphiphilic wax, - at least one anionic associative polymer comprising: i) a skeletal chain derived from at least one monomer comprising at least one carboxylic acid and at least one α, β-monoethylenic unsaturation, their ester (s), their salt (s), and mixture thereof, ii) at least one hydrophobic chain extending laterally relative to said skeletal chain, and iii) at least one alkoxylated or glycerolated spacer connecting said skeletal chain and said hydrophobic chain (s). 2. Composition according to claim 1, wherein the anionic associative polymer (s) comprises (include) a skeletal chain derived from at least one (meth) acrylic acid monomer, s) ester (s), their salt (s), and their mixture. 3. A composition according to claim 1 or 2, wherein said hydrophobic chain (s) and their respective spacers extend in continuity from one another, laterally relative to said skeletal chain. 4. Composition according to claim 1, 2 or 3, wherein the hydrophobic chain (s) comprises (s) a linear and saturated fatty chain C8-C24, preferably C12-C22, more preferably in C16-C22. 30 5. Composition according to any one of the preceding claims, in which the anionic associative polymer (s) is (are) chosen from copolymers derived from (meth) acrylic acid. C1-C8alkyl, preferably C1-C3alkyl, preferably C2 / (meth) acrylate of C8-C24 fatty alcohol, more preferably C12-C22, preferably C12-C22, more preferably preferentially still in 018 or 022 and their mixture, alkoxylated or glycerolated. 6. Composition according to any one of the preceding claims, in which the anionic associative polymer (s) is (are) chosen from the following INCI copolymers: ACRYLATES / STEARETH- METHACRYLATE COPOLYMER, ACRYLATES / BEHENETH-25 METHACRYLATE COPOLYMER, and mixtures thereof. 7. Composition according to any one of the preceding claims, in which the total content of anionic associative polymer (s) is greater than or equal to 0.1% by weight, more preferably 0.3% by weight, relative to total weight of the composition, preferably inclusive of between 0.3 and 5% by weight, more preferably between 0.3 and 4% by weight relative to the total weight of the composition. 8. A composition according to any one of the preceding claims, wherein the anionic associative polymer (s) and the amphiphilic wax (s) are the main emulsifying system of the present invention. composition. 9. Composition according to any one of the preceding claims, wherein the total content of amphiphilic wax (s) is greater than or equal to 7% by weight, relative to the total weight of the composition, preferably between 10 and 40% by weight, based on the total weight of the composition. 10. Composition according to any one of the preceding claims, wherein the amphiphilic wax (es) is (are) chosen from hydrocarbon waxes esterified with at least one oxyethylenated group, glycerol, and their mixed. 11. Composition according to any one of the preceding claims, wherein said composition comprises at least 50% by weight of amphiphilic wax (es), preferably at least 75% by weight of amphiphilic wax (es), relative to the total weight of wax (es). 12. Composition according to any one of claims 9, 10 or 11, wherein the total content of anionic associative polymer (s) and the total content of amphiphilic wax (s) are such that the weight ratio of anionic associative polymer (s) to amphiphilic wax (s) is greater than or equal to 1/75, better to 1/60, preferably inclusive of between 1/50 and 1 / 5, more preferably between 1/50 and 1/10. 13. Composition according to any one of the preceding claims, comprising at least one hydrophilic film-forming polymer. 14. Composition according to any one of the preceding claims, comprising at least one dyestuff chosen from one or more pulverulent material (s), preferably metal oxides, and in particular iron oxides. 15. A method of coating keratinous fibers, in particular eyelash makeup, comprising a step of applying a cosmetic composition for coating keratinous fibers according to any one of the preceding claims.