FR3015262A1 - NAIL COATING ASSEMBLY AND USE - Google Patents

Abstract

The present invention relates to an assembly comprising: a) a coating composition for a fingernail, in particular a make-up or care, preferably having a viscosity of less than or equal to 20 cPs, comprising: an aqueous continuous phase; particulate phase comprising: i) at least one film-forming polymer in the form of particles in aqueous dispersion, ii) at least one coloring material chosen from pigments, in particular inorganic pigments, in particular chosen from metal oxides, - at least one dispersing agent polymer, capable of dispersing the particulate phase in the aqueous phase, b) a packaging and application system comprising an applicator and a composition reservoir in which said composition is in the free state, the applicator being at least partially in part direct fluidic contact of said composition, without the intermediary of a retention block of said composition, preferably said applicator p resentant a percentage of free volume ranging from 50 to 80%. The present invention also relates to a use of such an assembly for coating, in particular makeup, nails.

Description

The present invention relates to an assembly comprising a particular composition, in particular a cosmetic composition, intended for the coating of nails, more particularly intended for nail makeup, combined with an applicator-type packaging and application system. felt tip particular. It relates to a particular use of such a set. Conventionally, the makeup and / or care of the nails or false nails is achieved using a nail polish composition applied by means of a brush.

At present, most of the compositions in the form of nail polish are based on a mixture of organic solvents containing nitrocellulose, an arylsulfonamide formaldehyde resin or an alkyd resin and a plasticizer. Such varnishes, because of the presence of organic solvents, have a number of disadvantages mainly related to the use of solvent and which, in particular, very often generate, when applied an uncomfortable odor. In recent years, research has therefore focused on the development of nail polishes free of organic solvents and in particular aqueous varnish. Such aqueous varnishes have been used in application devices other than brushes. For example, the document FR 2,537,871 describes a water-based, completely pigment-free, low-viscosity nail polish containing dyes such as acidic organic dyes, which can be adapted to an application by means of a device with an application wick. However, this type of varnish has the disadvantage of impregnating the nails, making makeup difficult, which is not desirable. In addition, such makeup can be excessively transparent and lack of coverage. Thus, a solution to overcome these problems is to implement high viscosity compositions capable of limiting the sedimentation of dyestuffs, in particular pigments. However, some packaging and application systems, such as felt tip type applicators are then unsuitable for such cosmetic compositions too viscous. Indeed, such compositions intended to evolve from the reservoir to the applicator tip tip by capillarity can not pass through this felt, or hardly, leading then to an uneven and irregular flow of applied composition.

To circumvent this problem, conventional nail felts generally use a valve system inside the pen to deliver the product on demand at the push of a button or by pushing the felt tip into the body of the pen. In particular, US 4,712,571 discloses this type of device.

However, the cost of such a device is generally important. In addition, the application of the cosmetic composition may give rise to an inhomogeneous deposit and to a risk of varnish running on the edge of the nail due to the application of too much varnish on the nail. EP2109481 discloses a felt tip applicator, and an aqueous continuous phase nail polish composition comprising a particulate phase comprising at least two film-forming polymers and a dispersing agent. However, the compositions used may give rise to a lack of opacity. In view of the compositions and applicators of the prior art, the balance between homogeneity of the deposit, opacity, coverage, stability, (re) dispersion of dyestuffs is difficult to develop to obtain a satisfactory solution on at least one of these points, worse on all of these points. The present invention therefore relates to a set of packaging and application of a particular cosmetic composition solving at least one of the aforementioned problems.

An object of the present invention is to provide a composition capable of being dispensed through a felt applicator, in particular reducing or even avoiding sedimentation problems, in particular the sedimentation problems of dyestuffs, and in particular pigments of the type metal oxide (s). An object of the present invention is to provide a composition capable of being dispensed through a felt applicator for redispersing dyestuffs, especially pigments, by simply stirring said composition. An object of the present invention is to provide a set with a composition for obtaining on the nail a smooth and regular deposit.

The present invention thus relates, according to a first aspect, to a coating assembly for a nail, in particular a make-up or care product, comprising: a) a coating composition for a nail, in particular a make-up or a care product, preferably of which the viscosity is less than or equal to 20 cPs, comprising: - an aqueous continuous phase, - a particulate phase comprising: i) at least one film-forming polymer in the form of particles in aqueous dispersion, ii) at least one dyestuff chosen from pigments , in particular inorganic pigments, in particular chosen from metal oxides, - at least one polymeric dispersing agent capable of dispersing the particulate phase in the aqueous phase, b) a packaging and application system comprising an applicator and a composition tank wherein said composition is in the free state, the applicator being at least partly in direct fluid contact with the composition, without the int ermédiaire a retention block of said composition, preferably said applicator having a free volume percentage ranging from 50 to 80%. In other words, such a system does not include a porous retention block, thus being unable to be impregnated with a composition according to the invention.

In other words, such a packaging and application system according to the invention comprises a composition-impervious block, which may be permeable to air, engaged in said packaging system at least partly delimiting the composition tank. According to a particularly preferred embodiment, the composition reservoir comprises a ball adapted to be moved in said reservoir by agitation of the packaging and application system. The present invention thus relates, according to a second aspect, to a coating assembly of a nail, in particular a make-up or care nail, comprising: a) a coating composition for a nail, in particular a make-up or a care product, preferably of which the viscosity is less than or equal to 20 cPs, comprising: - an aqueous continuous phase, - a particulate phase comprising: i) at least one film-forming polymer in the form of particles in aqueous dispersion, ii) at least one dyestuff chosen from pigments , in particular inorganic pigments, in particular chosen from metal oxides, - at least one polymeric dispersing agent capable of dispersing the particulate phase in the aqueous phase, b) a packaging and application system comprising an applicator and a composition tank , the composition reservoir comprising a ball movable in said reservoir, in particular intended to be displaced by agitation of said sy stem, said system comprising a body inside which is engaged a block impervious to the composition, preferably however being permeable to air, said block being traversed by a composition distribution channel providing fluid communication between the composition and the applicator. Such a block thus at least partially defines said composition reservoir. Preferably said applicator has a free volume percentage ranging from 50 to 80%.

The present invention has a low sedimentation of the particles, with, above all, the possibility of redispersion of the sedimented particles, in particular redispersion of the pigments of the metal oxide type, by simple agitation of the packaging and application system. In addition, the present invention allows a coating of the nails, in particular makeup and / or nail care, easy, accurate and fast while obtaining a smooth, regular varnish film with good coverage. In addition, the film obtained has a good homogeneity, in particular the color generated is uniform and the resulting film is uniform, smooth and regular. In addition, such a device makes it possible to make invisible retouches to the naked eye, to maintain the quality of makeup over time. This composition is advantageously introduced into a packaging system and application pen-type felt tip without valve. According to particular embodiments, preferred, answering at least one of the aforementioned problems, an assembly according to the invention preferably has the following characteristics: the dispersant agent (s) comprises (include) at at least one polymeric dispersing agent of the ionic polymer type chosen from the compounds of formula (I) below: Formula (I) Formula (I) in which: R1 represents a hydrogen atom or a methyl group or a -C ( 0) 0- / X + or a group -C (O) O -R6, with R6 representing a linear or branched C 1 -C 50, preferably C 1 -C 8, preferably C 1 -C 4, alkyl group, R 2, R 3 and R 4, which may be identical or different, representing a hydrogen atom or a methyl group, R 5 representing a phenyl group or a linear or branched C 1 -C 50, preferably C 1 -C 20, alkyl group, or a group -C (O) O -R7, with R7 representing a linear or branched C 1 -C 50 alkyl group of preferably at C1-04, x represents an integer ranging from 1 to 100; y represents an integer ranging from 0 to 100, n representing an integer between 1 and 1000, -x, y, and n being chosen so that the equation "n (x + y)" is greater than or equal to 20, preferably greater than or equal to 50, X + representing a cation chosen in particular from a sodium atom, a potassium atom, or an ammonium group, preferably is an ammonium group; the agent (s) dispersant (s) comprises (include) at least one polymeric dispersing agent of ionic polymer type chosen from the compounds of formula (I ') below: Formula (I') Formula (I ') in wherein: - R1, R2, R3, and R4 representing a hydrogen atom or a C1-C6 alkyl group, in particular a methyl, - R5 representing a linear or branched C1-C50 alkyl group, preferably C1-C8, preferably C1-C4, in particular methyl, x represents an integer ranging from 1 to 100; y represents an integer ranging from 0 to 100, n representing an integer between 1 and 1000, where x, y, and n are chosen so that the equation "n (x + y)" is greater than or equal to 20, preferably greater than or equal to 50, - X + representing a cation chosen in particular from an atom sodium, a potassium atom, or an ammonium group, preferably is an ammonium group; the dispersing agent (s) comprises (include) at least one polymeric polymeric dispersing agent chosen from the following compounds of formula (I "): Formula (I") Formula (I ") in which R1 represents a group -C (O) O- / X + or a group -C (O) O-R5, with R5 representing a linear or branched C1-C50 alkyl group, preferably C1- 08, preferably C 1 -C 4, in particular methyl, - R 2, R 3, and R 4 representing a hydrogen atom or a C 1 -C 6 alkyl group, in particular a methyl, x represents an integer ranging from 1 to 100, - y is an integer from 0 to 100, where n is an integer from 1 to 1000, where x, y, and n are selected such that the equation "n (x + y)" is greater than or equal to 20, preferably greater than or equal to 50, - X + representing a cation chosen in particular from a sodium atom, a potassium atom, or an ammonium group, preferably is an ammonium group; the dispersing agent (s) comprises (include) at least one polymeric nonionic polymeric dispersing agent selected from hydrophobic modified polysaccharides; the dispersing agent (s) is (are) present in a total content greater than or equal to 0.05% by weight, and less than or equal to 3% by weight, relative to the total weight of the composition, in particular ranging from 0.1 to 2% by weight, relative to the total weight of the composition; the composition comprises at least one auxiliary film-forming agent, advantageously chosen from plasticizing agents, coalescing agents, and their mixture, preferably the auxiliary film-forming agent (s) corresponding to the formula (II) ) R 'O Formula (II) Formula (II) in which: R and R', which may be identical or different, represent a linear or branched C 1 -C 8, preferably C 1 -C 4, alkyl group, or a group aromatic, R "representing a hydrogen atom or a linear or branched C 1-8, preferably C 1-4, alkyl group, preferably a hydrogen atom, m and n, which may be identical or different, representing an integer inclusive from 0 to 1, preferably 0, - p is an integer from 1 to 3 inclusive, the composition comprises at least one simethicone, preferably introduced as an emulsion; comprises at least one silico compound the composition comprises having a viscosity of from 2 to 20 cps and particularly from 5 to 15 cps; the packaging and application system comprises an applicator 20 made of compressed fibers. The subject of the present invention is, according to a second aspect of the invention, a use of such an assembly for the coating and in particular the makeup of the nails. According to the invention, a packaging and application assembly comprises a particular composition and a particular packaging and application system. A composition according to the invention is preferably a nail varnish, preferably of low viscosity, advantageously comprising an aqueous continuous phase, and a particulate phase, dispersed in said aqueous phase.

Dry extract A composition according to the present invention advantageously has a solids content greater than or equal to 25%, in particular ranging from 28 to 42%, preferably from 30 to 40%, more preferably from 32 to 38%. For the purpose of the present invention, the "dry matter content" denotes the content of non-volatile matter. The amount of dry extract (abbreviated as ES) of a composition according to the invention is measured by means of a commercial halogen desiccant "HALOGEN MOISTURE ANALYZER HR 73" from METTLER TOLEDO. The measurement is based on the weight loss of a sample dried by halogen heating and thus represents the percentage of residual material once the volatiles have evaporated. The measurement protocol is as follows: about 2 g of the composition, hereinafter the sample, is spread on a metal cup. The metal cup is then introduced into the halogen desiccant mentioned above. The sample is then subjected to a temperature of 105 ° C until a constant weight is obtained. The wet mass of the sample, corresponding to its initial mass before crosslinking, and the dry mass of the sample, corresponding to its mass after crosslinking and halogen heating, are measured by means of a precision balance. The experimental error related to the measurement is of the order of plus or minus 2%. The content of dry extract is calculated as follows: Dry extract content (expressed in% by weight) = 100 × (Dry mass / Wet mass). Viscosity According to a preferred embodiment, the compositions in accordance with the present invention have a viscosity of less than or equal to 20 cps. Typically, the viscosity of the composition can range from 2 to 20 cps, preferably from 5 to 15 cps. The viscosity measurement is for example measured using a Brookfield type apparatus. The protocol for measuring the viscosity is as follows. The mobile used is No. 18. The rotation speed of the mobile is 70 rpm. The measurement is made after 10 minutes of rotation. The liquid is placed in a 30 ml bottle. The measurement is carried out at a temperature of the water bath of 25 ° C. Such viscosity allows in particular to obtain easy application of a nail polish by means of a felt tip pen.

Aqueous Phase A composition comprises an aqueous phase. 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 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 water-miscible solvent) is generally present in the composition according to the present application in a content ranging from 30 to 80% by weight, relative to the total weight of the composition, preferably ranging from 40 to 70% by weight relative to the total weight of the composition. This aqueous phase content includes not only water from aqueous dispersions of film-forming polymers, as well as optionally water deliberately added to the composition.

A composition according to the invention more particularly comprises an aqueous continuous phase. By aqueous continuous phase composition is meant that the composition has a conductivity, measured at 25 ° C., greater than or equal to 23 μS / cm (microSiemens / cm), the conductivity being measured, for example using a conductivity meter. MPC227 from Mettler Toledo and an Inlab730 conductivity cell. The measuring cell is immersed in the composition, so as to eliminate air bubbles that may form between the 2 electrodes of the cell. The reading of the conductivity is made as soon as the value of the conductivity meter is stabilized. An average is carried out over at least 3 successive measurements. Particulate phase A composition comprises a particulate phase. This particulate phase comprises a plurality of distinct particles dispersed in the aqueous phase.

The particulate phase comprises at least: at least one film-forming polymer in the form of particles dispersed in water, and at least one coloring material chosen from pigments, in particular inorganic pigments, in particular chosen from metal oxides.

Particle Size The compositions according to the present invention comprise a particulate phase which may optionally be characterized by an average particle size. Such a particle size can be measured by different techniques. In particular, light scattering techniques (dynamic and static), Coulter sensor methods, sedimentation rate measurements (connected to size via the stokes law) and microscopy can be mentioned. These techniques make it possible to measure a particle diameter and, for some of them, a particle size distribution.

Preferably, the sizes and particle size distributions of the compositions according to the invention are measured by static light scattering by means of a commercial Master Sizer 2000 type granulometer from Malvern. The data is processed on the basis of Mie scattering theory. This theory, which is accurate for isotropic particles, makes it possible to determine, in the case of non-spherical particles, an "effective" diameter of particles. This theory is described in particular in Van de Hulst, HC, "Light Scattering by Small Particles", Chapters 9 and 10, Wley, New York, 1957. In the context of the present invention, the "average particle size "Is expressed in mean" effective "diameter in volume D [4.3], defined as follows: V, - d, D [4.3] = IIV where V, is the volume of particles of effective diameter d, . This parameter is described in particular in the technical documentation of the granulometer.

The measurements are carried out at 25 ° C. on a diluted particle dispersion. The "effective" diameter is obtained by taking a refractive index of 1.33 for water and an average refractive index of 1.5 for the particles. The blue obscuration is removed.

Dispersing agents A composition according to the invention comprises at least one dispersing agent, in particular capable of dispersing the particulate phase in the aqueous phase, preferably continuous phase, of the composition. A composition according to the invention advantageously comprises at least one polymeric dispersing agent, more advantageously still a plurality of polymeric dispersing agents. A composition according to the invention preferably comprises at least one polymeric dispersing agent of ionic polymer type. A composition according to the invention preferably comprises at least one nonionic polymeric polymeric dispersing agent. A composition according to the invention more preferably comprises at least one polymeric dispersing agent of the ionic polymer type and at least one polymeric nonionic polymer dispersing agent. The dispersing agent (s) according to the invention is (are) advantageously capable of dispersing at least the particles of film-forming polymer (s) which are preferably present in a composition according to the present invention. The dispersing agent (s) according to the invention is (are) advantageously capable of dispersing at least the dyeing material (s) preferably present in a composition according to the present invention. The dispersing agent (s) according to the invention is (are) advantageously capable of dispersing at least the filler (s) preferably present in a composition in accordance with the present invention. present invention. The dispersing agent (s) according to the invention is (are) advantageously capable of dispersing at least the particles of film-forming polymer (s), the dyestuff (s), the filler (s) preferably present in a composition according to the present invention. In particular, a composition in accordance with the present invention comprises at least one polymeric dispersing agent chosen from: 1 / polymeric dispersing agents of the ionic polymer type, chosen in particular from carboxylic acids and their salts, more particularly chosen from: polyacrylic acids and their salts, copolymers of acrylic acid and their salts, styrene / acrylic acid copolymers and their salts, vinylnaphthalene / acrylic acid copolymers and their salts, styrene / maleic acid copolymers and their salts, vinylnaphthalene / maleic acid copolymers and their salts, copolymers of maleic anhydride and of diisobutylene and their salts, and more particularly that marketed under the name Orotan 731DPe by the company Rhodia, even more particularly from: - copolymers of acrylic acid and their salts, - maleic anhydride copolymers and their salts, in part copolymers obtained by copolymerization of one or more maleic anhydride comonomers and one or more comonomers selected from vinyl acetate, vinyl alcohol, vinylpyrrolidone, olefins having from 2 to 20 carbon atoms, carbons such as octadecene, ethylene, isobutylene, diisobutylene, isooctylene and styrene, and mixtures thereof, the maleic anhydride co-monomers being optionally hydrolysed, partially or totally, preferably from acrylate copolymers ammonium, styrene / maleic anhydride copolymers, in the form of ammonium salt, and their mixture, more preferably still among the acrylate ammonium copolymers, By "salts" is meant alkali metal salts such as Na, Li, K of said acids , mono, di or triethanolamine salts or basic amino acids such as lysine or arginine, said acids, and mixtures thereof.

According to a particular embodiment of the invention, the dispersant (s) (s) thus meet (respond) to the following formula (I): Formula (I) Formula (I) in which: R1 represents a hydrogen atom or a methyl group or a group -C (O) OX + or a group -C (O) O -R6, with R6 representing a linear or branched C 1 -C 50 alkyl group of preferably C 1 -C 8, preferably C 1 -C 4, - R 2, R 3, and R 4, which may be identical or different, representing a hydrogen atom or a methyl group, - R 5 representing a phenyl group, or an alkyl group, linear or branched, C 1 -C 50, preferably C 1 -C 20, or a group -C (O) O-R 7, with R 7 representing a linear or branched C 1 -C 50, preferably C 1 -C 8, alkyl group, preferably C1-04, - x represents an integer ranging from 1 to 100, - y represents an integer ranging from 0 to 100, - n representing an integer between 1 and 1000, - x, y, and n being chosen from man in that the equation "n (x + y)" is greater than or equal to 20, preferably greater than or equal to 50, - X + representing a cation chosen in particular from a sodium atom, a potassium atom, or a ammonium group, preferably is an ammonium group.

According to a more particular embodiment, the dispersing agent (s) thus responds to the following formula (I '): Formula (I') Formula (I ') in which: - R1, R2, R3, and R4 representing a hydrogen atom or a C1-C6 alkyl group, in particular a methyl, - R5 representing a linear or branched C1-C50, preferably C1-C8, alkyl group of preferably C1-C4, in particular methyl, x represents an integer ranging from 1 to 100, y represents an integer ranging from 0 to 100, n representing an integer between 1 and 1000, x, y, and n being chosen so that the equation "n (x + y)" is greater than or equal to 20, preferably greater than or equal to 50, - X + representing a cation chosen in particular from a sodium atom, a potassium atom , or an ammonium group, preferably is an ammonium group According to a more particular embodiment, the dispersing agent (s) is (Thus) correspond to the following formula (I "): Formula (I") Formula (I ") in which: - R1 represents a group -C (O) O- / X + or a group -C (O) R 5, with R 5 representing a linear or branched C 1 -C 50, preferably C 1 -C 8, preferably C 1 -C 4, alkyl group, in particular methyl, - R 2, R 3, and R 4 representing a hydrogen atom; hydrogen or a C1-C6 alkyl group, in particular a methyl, x represents an integer ranging from 1 to 100; y represents an integer ranging from 0 to 100, n representing an integer between 1 and 1000, where x, y, and n are chosen so that the equation "n (x + y)" is greater than or equal to 20, preferably greater than or equal to 50, X + representing a cation chosen in particular from an atom of sodium, a potassium atom, or an ammonium group, preferably is an ammonium group. Preferably, a composition in accordance with the invention comprises at least one polymeric dispersing agent of the ionic polymer type chosen from carboxylic acid salts, in particular chosen from at least one acrylate ammonium copolymer, at least one styrene / maleic anhydride copolymer under form of ammonium salt, and their mixture.

For example, mention may be made of the following polymeric dispersing agents of the ionic polymer type: the ammonium acrylate copolymer, for example, sold under the name "SYNTRAN KLG219-CG" by the company Interpolymer, or the "dispex AA 4040" from BASF, styrene / maleic anhydride copolymer (50/50), in the form of 30% ammonium salt in water sold under the reference SMA1000H® by the company Arkema or the styrene / maleic anhydride copolymer (50/50), under 40% sodium salt form in water sold under the reference SMA1000HNa® by the company Arkema, 25% sodium polymethacrylate in water sold under the reference DARVAN® 7-N by the R .T company . Vanderbilt Company, Inc., and their mixture (s).

A composition according to the invention preferably comprises a total content of polymeric dispersant (s) polymer (s) ionic polymer (s) greater than or equal to 0.05% by weight and less than or equal to 3% by weight, relative to the total weight of the composition, in particular ranging from 0.1 to 2% by weight, relative to the total weight of the composition, more particularly ranging from 0.1 to 1.5% by weight, more particularly still ranging from 0.1 to 1% by weight, relative to the total weight of the composition. 2 / polymeric dispersing agents of the nonionic polymer type, in particular chosen from hydrophobic modified polysaccharides.

The hydrophobic modified (s) polysaccharide (s) is (are) advantageously chosen from fructans or fructosans. The fructans are oligosaccharides or polysaccharides comprising a sequence of anhydrofructose units optionally associated with a plurality of different saccharide residues of fructose. The fructans can be linear or branched.

The fructans can be products obtained directly from a plant or microbial source or products whose chain length has been modified (increased or reduced) by fractionation, synthesis or hydrolysis in particular enzymatic. The fructans generally have a degree of polymerization of from 2 to about 1000 and preferably from 2 to about 60. There are 3 groups of fructans: the first group corresponds to products whose fructose units are mostly linked by f3 bonds -2-1. Such products are essentially linear fructans, such as inulin, the second group also corresponds to linear fructoses but the fructose units are essentially linked by f3-2-6 linkages. Such products are levans, the third group corresponds to mixed frucans, that is to say having sequences f3-2-6 and f3-2-1. Such products are essentially branched fructans such as graminans. The fructans used in the compositions according to the invention are preferably inulins. Inulin can be obtained for example from chicory, dahlia or Jerusalem artichokes.

Preferably, the inulin used in the composition according to the invention is obtained for example from chicory. According to a preferred embodiment, the polysaccharides, in particular the hydrophobic modified inulins, are obtained by grafting hydrophobic chains onto the hydrophilic backbone of the fructan. The hydrophobic chains capable of being grafted onto the main chain of the fructan can in particular be linear or branched hydrocarbon chains, saturated or unsaturated, having from 1 to 50 carbon atoms, such as the alkyl, arylalkyl, alkylaryl or alkylene groups; divalent cycloaliphatic groups or organopolysiloxane chains. These hydrocarbon or organopolysiloxane chains may in particular comprise one or more ester, amide, urethane, carbamate, thiocarbamate, urea, thiourea, and / or sulphonamide functions, such as especially methylenedicyclohexyl and isophorone; or divalent aromatic groups such as phenylene.

In particular, the polysaccharide, especially inulin, has a degree of polymerization of from 2 to about 1000 and preferably from 2 to about 60, and a degree of substitution of less than 2 on the basis of a fructose unit. According to a preferred embodiment, the hydrophobic chains have at least one alkyl carbamate group of formula R-NH-CO- in which R is an alkyl group having from 1 to 22 carbon atoms. According to a more preferred embodiment, the hydrophobic chains are lauryl carbamate groups. In particular, by way of illustration and without limitation, hydrophobic modified inulins which can be used in the compositions according to the invention, mention may be made of stearoyl inulin such as those sold under the names Lifidrem Inst by the company Engelhard and Rheopearl INS by the company Ciba ; palmitoyl inulin; undecylenoyl inulin such as those sold under the names Lifidrem INUK and Lifidrem INUM by the company Engelhard; and inulin lauryl carbamate such as that sold under the name INUTEC SP1 by the company Orafti. In particular, the hydrophobic modified polysaccharide is a lauryl carbamate grafted inulin, in particular derived from the reaction of lauryl isocyanate with an inulin, in particular derived from chicory, such as, for example, the product sold under the name INUTEC SP1 by the company ORAFTI A composition according to the invention preferably comprises a total content of polymeric dispersant (s) polymer (s) polymer (s) nonionic (s) greater than or equal to 0.05% by weight and less than or equal to 2% by weight, relative to the total weight of the composition, in particular ranging from 0.05 to 1.5% by weight, relative to the total weight of the composition, more particularly ranging from 0.05 to 1% by weight, more particularly from 0.1 to 0.5% by weight, relative to the total weight of the composition.

A composition according to the invention preferably comprises a total content of polymeric dispersing agent (s) greater than or equal to 0.05% by weight and less than or equal to 3% by weight, relative to the total weight of the composition, in particular ranging from 0.1 to 2% by weight, relative to the total weight of the composition, more particularly ranging from 0.1 to 1.5% by weight, more particularly still ranging from 0.1 to 1% by weight, relative to the total weight. of the composition. According to an advantageous embodiment, a composition in accordance with the invention thus comprises: at least one polymeric dispersing agent of ionic polymer type chosen from carboxylic acids and their salts, more particularly chosen from at least one ammonium acrylate copolymer or at least one a styrene / maleic anhydride copolymer in the form of sodium or ammonium salt, advantageously present at a total content greater than or equal to 0.05% by weight and less than or equal to 3% by weight, relative to the total weight of the composition, in particular ranging from 0.1 to 2% by weight, relative to the total weight of the composition, more particularly ranging from 0.1 to 1.5% by weight, more particularly still ranging from 0.1 to 1% by weight, relative to the total weight of the composition. composition, and - at least one polymeric nonionic polymeric dispersing agent chosen from hydrophobic modified polysaccharides, in particular from modified inulins hydrophobic, more particularly the inulin lauryl carbamate, advantageously present at a total content of greater than or equal to 0.05% by weight and less than or equal to 2% by weight, relative to the total weight of the composition, in particular ranging from 0.05 to 1.5% by weight, relative to the total weight of the composition, more particularly ranging from 0.05 to 1% by weight, more particularly still ranging from 0.1 to 0.5% by weight, relative to the total weight of the composition. Dyestuffs A composition in accordance with the invention comprises at least one dyestuff chosen from pigments.

This (these) pigment (s) is (are) in particular intended to provide a colored appearance to the compositions especially useful especially for the makeup of nails. By "pigments" is meant particles of any shape, such as globular or spherical, white or colored, mineral or organic, insoluble in the physiological medium, intended to impart a hue to the composition. The pigments may be white or colored, preferably colored, mineral or organic, preferably organic. According to a particular embodiment, the dyeing material (s), and in particular the pigment (s), is (are) spherical (s) and has (present) a particle size, expressed as mean "effective" diameter by weight D [0.5], ranging from 0.1 pm to 20 pm, in particular from 0.5 pm to 15 pm, in particular from 1 pm to 10 pm. A composition in accordance with the invention preferably comprises at least one dyestuff chosen from inorganic pigments.

Inorganic Pigments The inorganic or inorganic pigment (s) is (are) preferably chosen from metal derivatives, and in particular metal oxides. Such organic pigments are advantageously chosen from titanium dioxide, optionally surface-treated, zirconium or cerium oxides, zinc oxides, iron oxides (such as black, yellow or red), chromium oxides, manganese violet, ultramarine blue, chromium hydrate and ferric blue, metallic powders such as aluminum powder and copper powder. The organic pigments may be present in the composition at a content ranging from 0.01% to 5% by weight, in particular from 0.05% to 4% by weight, and in particular 0.1% by weight. at 3% by weight, more preferably from 0.15 to 2% by weight, relative to the total weight of the composition. Organic Pigments A composition according to the invention may additionally comprise at least one organic pigment. These include carbon black, Red 7 pigments, D & C type pigments, and lacquers based on cochineal carmine, barium, strontium, calcium and aluminum. Preferably, a composition in accordance with the invention comprises at least one pigment with the trade name UNIPURE LC sold by SENSIENT, for example an organic pigment of this trade name, and in particular Red 7 / Cl 15850. A composition in accordance with the invention. invention comprises for example at least one organic pigment of the following formula: The organic pigments may be present in the composition at a content ranging from 0.01 to 10% by weight, in particular from 0, 1 to 6% by weight, and in particular from 0.5 to 4% by weight, more preferably from 1 to 3% by weight, relative to the total weight of the composition. Film-forming polymers A composition according to the invention comprises at least one 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 preferably, in the presence of an auxiliary film-forming agent, a continuous film on a support at a temperature of 20 °. C at 150 ° C.

The (the) film-forming polymer (s) is (are) present (s) to a total content greater than or equal to 5% by weight, relative to the total weight of the composition, in particular greater than or equal to 10% by weight, relative to the total weight of the composition, especially at a content ranging from 15 to 50% by weight, relative to the total weight of the composition.

A composition according to the invention comprises at least one film-forming polymer in the form of particles in aqueous dispersion, and optionally at least one water-soluble film-forming polymer.

Film-forming polymers in aqueous dispersion A composition in accordance with the invention comprises at least one film-forming polymer in the form of particles in aqueous dispersion.

The (the) film-forming polymer (s) present in said preparation of the composition in the form of particles in an aqueous dispersion, generally bears the (pseudo) latex name, that is to say say latex or pseudolatex. The techniques for preparing these dispersions are well known to those skilled in the art. A composition according to the invention preferably comprises a total dry matter content of polymer particles (s) film-forming (s) greater than or equal to 5% by weight, relative to the total weight of the composition, in particular greater than or equal to 10% by weight, relative to the total weight of the composition, in particular a content ranging from 15 to 50% by weight, relative to the total weight of the composition. A dispersion suitable for the invention may comprise one or more types of particles, these particles being able to vary in size, structure and / or chemical nature. In general, these polymer particles have an average size expressed as an average "effective" diameter by volume D [4.3] less than or equal to 1 μm. The size of the polymer particles in aqueous dispersion can vary from 1 nm to 1 μm, preferably from 5 to 500 nm, and is in particular from 10 to 250 nm. The size of the polymer particles may be measured by the same method (s) described above for the particulate phase. These solid particles may be of anionic, cationic or neutral nature and may constitute a mixture of solid particles of different natures.

By "aqueous dispersion" is meant a liquid medium based on water and / or hydrophilic solvents. This aqueous liquid medium may consist essentially of water. It may also comprise a mixture of water and organic solvent (s) miscible with water (miscibility in water greater than 50% by weight at 25 ° C) such as lower monoalcohols having 1 to 5 carbon atoms such as ethanol, isopropanol, glycols having 2 to 8 carbon atoms such as propylene glycol, ethylene glycol, 1,3-butylene glycol, dipropylene glycol, C3-04 ketones, the aldehydes in 02-04. In general, a composition according to the invention comprises from 5 to 45% by total weight of dry polymer (s) film-forming (s), in particular from 10 to 40% by weight, more particularly from 20 to 35% by weight, and more preferably from 25 to 30% by total weight of dry polymer (s) film-forming (s), relative to the total weight of the composition. According to one particular embodiment of the invention, the film-forming polymer (s) in the form of particles in aqueous dispersion is (are) preferably chosen from acrylic dispersions. In other words, the aqueous dispersion of polymer particles is advantageously an aqueous dispersion of acrylic polymer. In particular, this copolymer is chosen from copolymers resulting from the polymerization of at least one styrene monomer and at least one (meth) acrylate monomer, more preferably is chosen from copolymers resulting from the polymerization of at least one styrenic monomer, an acrylate monomer and at least one methacrylate monomer. The acrylic polymer is preferably a styrene / acrylate / ammonium methacrylate copolymer.

As acrylic polymer in aqueous dispersion, it is possible for example to use the styrene / acrylate / ammonium acrylate copolymer sold under the name "SYNTRAN PC 5620" by the company Interpolymer. Auxiliary Film-forming Agents A composition according to the invention may comprise at least one auxiliary film-forming agent promoting the formation of a film with the film-forming polymer particles. The auxiliary film-forming agent may be chosen from plasticizers or coalescing agents, and their mixture, preferably their mixture.

Unlike plasticizers, the coalescing agent (s) will tend to evaporate from the composition coating applied to the nail so as to cure the coating and render it scratch resistant. The plasticizer (s) decreases (decreases) the glass transition temperature of the film-forming polymer (s) present in the cosmetic composition but will then remain in the composition coating applied to the nail. Thus, the coalescing agent (s) is (are) chosen so as to have a saturation vapor pressure at 20 ° C. of greater than 1 Pa, and a molecular mass of less than 250 g / mol, preferably less than 200 g / mol. g / mol.

According to a preferred embodiment, a composition according to the invention thus comprises at least one coalescing agent and at least one plasticizer, distinct from each other. In particular, mention may be made, alone or as a mixture, of plasticizers or coalescing agents chosen from: glycols and their derivatives such as diethylene glycol ethyl ether, diethylene glycol methyl ether, diethylene glycol butyl ether or else diethylene glycol hexyl ether, ethylene glycol ethyl ether, ethylene glycol butyl ether, ethylene glycol hexyl ether; the glycol esters, the propylene glycol derivatives and in particular the propylene glycol phenyl ether, the propylene glycol diacetate, the propylene glycol dibenzoate, the dipropylene glycol butyl ether, the tripropylene glycol butyl ether, the propylene glycol methyl ether and the dipropylene glycol ethyl ether, tripropylene glycol methyl ether and diethylene glycol methyl ether, propylene glycol butyl ether, esters of carboxylic acids such as citrates, especially triethyl citrate, tributyl citrate, triethyl acetyl citrate, tributyl acetyl citrate, triethyl-2-hexyl acetyl citrate; phthalates, especially diethyl phthalate, dibutyl phthalate, dioctyl phthalate, dipentyl phthalate, dimethoxyethyl phthalate, butyl phthalate and 2-ethyl hexyl; phosphates, especially tricresyl phosphate, tributyl phosphate, triphenyl phosphate, tributoxyethyl phosphate; tartrates, especially dibutyl tartrate; adipates such as diisobutyl adipate, diethyl adipate; carbonates; sebacates such as dimethyl sebacate, dibutyl sebacate; ethyl stearate, 2-ethyl hexyl palmitate, tert-butyl acid ester and tri-methyl-2,2,4 pentanediol-1,3, benzyl benzoate, butyl acetylricinoleate, glyceryl acetylricinoleate, butyl glycolate, camphor, glycerol triacetate, N-ethyl-o, p-toluenesulfonamide, oxyethylenated derivatives such as oxyethylenated oils, especially vegetable oils such as Castor oil; silicone oils, - mixtures thereof.

According to a preferred embodiment, a composition according to the invention comprises at least one auxiliary film-forming agent, and in particular at least one coalescing agent, corresponding to the following formula (II): ## EQU1 ## (II) Formula (II) in which: R and R ', which may be identical or different, represent a linear or branched C 1 -C 8, preferably C 1 -C 4, alkyl group, or an aromatic group, R "representing an atom hydrogen or an alkyl group, linear or branched, C 1 -C 8, preferably C 1 -C 4, preferably a hydrogen atom, m and n, identical or different, representing an integer inclusive between 0 and 1 , preferably equal to 0, p represents an integer inclusive of between 1 and 3.

Preferably, a composition in accordance with the invention comprises at least one coalescing agent chosen from glycols and derivatives, glycol esters, propylene glycol derivatives and their mixture, and preferably at least one coalescing agent chosen from propylene glycol derivatives, and especially propylene glycol butyl ether. The coalescing agent (s) may be present in a total content ranging from 0.5% to 10%, in particular from 1% to 8% and in particular of 2%. at 5% by weight relative to the total weight of the composition. Preferably, a composition in accordance with the invention comprises at least one plasticizing agent chosen from glycols and derivatives, glycol esters, propylene glycol derivatives and their mixture, and preferably at least one plasticizer chosen from propylene glycol, and especially propylene glycol dibenzoate. The plasticizing agent (s) may be present in a total content ranging from 0.5% to 10%, in particular from 0.8% to 5% and in particular from 1% to 3% by weight relative to the total weight of the composition. The plasticizing agent (s) and the coalescing agent (s) may be present in a total content ranging from 1 to 3% by weight relative to the total weight of the composition. % to 15%, especially 2% to 10% and in particular 3% to 6% by weight relative to the total weight of the composition. According to a preferred embodiment, the coalescing agent (s) and the plasticizing agent (s) are (are) present in a respective total content such that the weight ratio of coalescing agent (s) on the plasticizing agent (s) is greater than or equal to 1, in particular from 1.2 to 2.5, more particularly from 1.5 to 2.

Simethicone The composition according to the invention advantageously comprises at least one simethicone, preferably introduced in the form of an emulsion. Advantageously, this (these) simethicone (s) is (are) introduced (s) dispersed in an aqueous phase, in particular in water, by means of an emulsifying system, in particular at least one surfactant, suitable. This (these) simethicone (s) is (are) able (s) to reduce, or even eliminate, the wetting of the nail following the application of a composition according to the invention, in particular with the aid of an applicator of felt tip type. By "simethicone" is meant a silicone compound, in particular a silicone oil, containing silica. By "silicone compound" is meant a compound, or oil, (poly) organopolysiloxane, preferably a polyorganopolysiloxane preferably non-volatile, preferably non-cyclic. By "nonvolatile compound or oil" is meant a compound, or oil, remaining on the keratin fiber at ambient temperature and atmospheric pressure for at least several hours and having in particular a vapor pressure of less than 10 -3 mmHg. (0.13 Pa). Simethicone can also be defined as a compound or a non-volatile oil having an evaporation rate such that, under the conditions defined above, the amount evaporated after 30 minutes is less than 0.07 mg / cm 2.

By "non-cyclic" denotes a compound, or oil, linear or branched, comprising no ring. In other words, this oil, or this compound, lacks "radical (hetero) aryl" and / or "radical (hetero) cycloalkyl". Preferably, a simethicone according to the invention comprises a non-volatile dimethicone containing silica.

Preferably, the molecular weight of a simethicone according to the invention is between 5,000 and 50,000 g / mol, preferably between 10,000 and 30,000 g / mol. A simethicone according to the invention has a viscosity preferably chosen in the range from 50 to 5,000 mm 2 / s at 25 ° C, preferably from 100 to 3,000 mm 2 / s, and more preferably from 300 to 1,000 mm 2 / s. The method for measuring the viscosity used in the invention for characterizing the simethicones according to the invention can be the "kinematic viscosity at 25 ° C. raw product CID-012-01" or the "Viscosity Ubbelohde DIN 51562-1 PV04001". 25 ° C ".

A simethicone according to the invention may have a refractive index greater than 1.3, especially less than 1.6. A simethicone according to the invention comprises a dimethicone advantageously represented by the following general formula (III): ## STR1 ## ## STR2 ## III) in which: R1, which may be identical or different, representing: i) a linear or branched, especially C1-C6, linear or branched (C1-C20) alkyl group, such as methyl, ethyl, propyl or butyl; or - ii) a hydroxyl group; where R2 represents: i) a linear or branched (C1-C20) alkyl group optionally being interrupted and / or terminated by a heteroatom such as O, S, N, especially i) is a linear or branched C1-C6 alkyl group; branched, such as methyl, ethyl, propyl, or butyl; ii) a (C1-C9) (poly) haloalkyl especially perfluoroalkyl group, comprising from 1 to 9 halogen atoms, particularly fluorine such as trifluoromethyl; and iii) the polysiloxane group -O- [Si (R 1) 2-Ok-Si (R 1) 3 with R 1 as defined above; o al representing a radical R1 or R2 as defined above; where m is an integer between 0 and 150, preferably 20 and 100; o n and n ', identical or different, being an integer inclusive between 1 and 300, preferably 1 and 100; According to a preferred embodiment R'1 represents the radical R1, and more particularly a (C1-C6) alkyl group such as methyl. According to a particular embodiment, m is 0. According to another particular embodiment of the invention R 1 is methyl and more particularly m is 0 and R 1 is methyl.

According to a preferred embodiment, a simethicone according to the invention comprises a dimethicone corresponding to the following formula (IV): (IV) Formula (IV) in which x is an integer ranging from 50 to 1000, better still from 100 to 500 and more specifically from 150 to 300. Preferably, the (the) simethicone (s) is (are) present (s) in the composition according to the invention in a total content ranging from 0.001 to 1% by weight, particularly from 0.002 to 0.1% by weight and for example from 0.005 to 0.05% by weight, relative to the total weight of the composition.

The (the) simethicone (s) used in emulsion form is (are) stabilized in water by at least one emulsifying system comprising at least one surfactant. The surfactant (s) comprises (advantageously) comprises at least one nonionic surfactant.

This (these) surfactant (s) surfactant (s) is (are) advantageously chosen (s) from a surfactant (s) nonionic (s) of value HLB, Griffin sense, 25 ° C, greater than or equal to 8, in particular greater than or equal to 10, such as ranging from 10 to 17. The HLB value (hydrophilic-lipophilic balance) according to Griffin is defined in J. Soc. Cosm. Chem. 1954 (volume 5), pages 249-256. Reference can be made to the document "Encyclopedia of Chemical Technology, KIRK-OTHMER", Vol. 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. More particularly, the (the) surfactant (s) is (are) is (are) advantageously chosen from oxyalkylenated esters, preferably oxyalkylenated sorbitan esters, such as polyethylene glycol sorbitan tristearate. Preferably, the (the) emulsifying system (s) is (are) present in the composition according to the invention in a total content ranging from 0.0001 to 0.1% by weight, relative to the total weight of the composition. According to a particular embodiment, the simethicone emulsion comprises a combination of simethicone / polysorbate 65, dispersed in water, referenced "XIAMETER AFE-1510", also marketed by Dow Corning. Silicone Gum The composition according to the invention comprises at least one silicone gum, preferably introduced in the form of an emulsion. Advantageously, this (these) silicone gum (s) is (are) dispersed in an aqueous phase, in particular in water, by means of an emulsifying system, in particular at least one surfactant, suitable . This (these) gum (s) of silicone is (are) capable (s) to increase the smooth and slippery nature of the composition after application and drying of the nail, for example at room temperature. By "gum" is meant a compound of high molecular weight, optionally comprising at least one solid fraction at a temperature of 25 ° C. By "silicone gum" is preferably meant a gum obtainable from at least one polyorganopolysiloxane, in particular a polydimethylsiloxane compound, more particularly capable of being obtained from the reaction of at least one compound polydimethylsiloxane comprising hydrogenosilane functions with at least one polydimethylsiloxane comprising vinyl functions.

The silicone gums that can be used in accordance with the invention are in particular polydiorganosiloxanes, in particular having high average mass-average molecular weights of between 30,000 and 1,000,000, preferably between 50,000 and 1,000,000, used alone or as a mixture. preferably in the form of an emulsion in water.

The silicone gum (s) can be chosen from: polydimethylsiloxane gums, polydimethylsiloxane / methylvinylsiloxane gums, polydimethylsiloxane / diphenylsiloxane gums, polydimethylsiloxane / phenylmethylsiloxane gums - polydimethylsiloxane / diphenylsiloxane / methylvinylsiloxane gums, - dimethicone / divinyldimethicone gums, and their mixture, According to a preferred embodiment, the silicone gum (s) comprises (include) at least one divinyldimethicone / dimethicone.

A silicone gum according to the invention is for example marketed under the reference HMW2220, or MEM-1997 EMULSION, or XIAMETER MEM-2664 EMULSION, by Dow Corning. A composition according to the invention advantageously comprises a total content of silicone gum (s), preferably less than or equal to 2% by weight, relative to the total weight of the composition, and preferably greater than or equal to 0.01%. by weight, relative to the total weight of the composition, such as going from 0.05% to 1% by weight, relative to the total weight of the composition, more preferably ranging from 0.1% to 0.5% by weight, relative to the total weight of the composition.

Additives A composition according to the invention may also contain ingredients commonly used in cosmetics and more particularly in the field of cosmetics and / or nail care. They may especially be chosen from vitamins, trace elements, softeners, sequestering agents, basifying or acidifying agents, spreading agents, thickening agents devoid of film-forming properties, preservatives, UV filters, active agents, moisturizers, perfumes, neutralizers, stabilizers, antioxidants and mixtures thereof. When the compositions in accordance with the invention are more particularly intended for the care of natural nails, they may in particular incorporate, as active ingredients, curing agents for keratin materials, active agents acting on the growth of the nail, for example the methyl sulfonyl methane and / or active agents for treating various conditions localized at the level of the nail, such as onichomycosis.

The amounts of these various ingredients may be those conventionally used in this field and for example from 0.01 to 20% and especially from 0.01 to 10% by weight, relative to the total weight of the composition according to the invention.

PACKAGING AND APPLICATION SYSTEM A composition in accordance with the invention is advantageously packaged in an applicator forming a packaging system and an application device. According to a preferred embodiment, this applicator is of the felt-tip applicator type, more particularly felt-tip pen. Felt tip applicator The term "felt tip" refers to a tip of felt or synthetic fibers. For the purposes of the present invention, the term "felt-tip pen" designates a gripping instrument consisting of a tube terminating in a point and containing a reserve of a liquid pouring through the tip as soon as it is applied on a support. A "felt tip applicator" or "felt tip pen" is distinct from a ball pen or any simple bristle device used for the application of conventional nail polish compositions.

Figure 1 shows schematically, in elevation, an example of an applicator pen suitable for the application of the composition. FIG. 2 is a longitudinal section along II-II of FIG. 1. In general, the applicator 1 comprises a body 2 of elongate shape along a longitudinal axis X, provided at one end with an application element 3 , and possibly at a second end opposite to the first end of a closure element which is in the example shown in the form of a cap which can be fixed on the body 2, for example by snap-fastening in order to obtain a sealing the applicator when not in use. The body 2 is closed at the opposite end to the application element 3 by a bottom 5 which is for example snapped or frictionally held in the body 2. The wall of the body 2 may be substantially non-deformable, the transfer of the composition on the region to be treated is performed by capillarity maintaining the balance of pressures between the reservoir and the external environment. Otherwise, a venting orifice may be provided in the body 2 of the applicator in order to restore the internal pressure of the device after distribution of the composition through the application element 3. In the example under consideration, the element 3 is axially fixed relative to the body 2 during application. The application element 3 can be given various shapes. In the illustrated example, the tip of the application element 3 is wedge-shaped, when viewed from the side in the direction of the arrows II of FIG. 1, but it could be given to the tip of the application element of FIG. other forms for example conical, frustoconical, two-pointed, with cut sides, concave edges or other. The application element 3 can also be covered with fibers on its surface, for example by flocking. The wall of the body 2 could be made if necessary in a softer material so as to allow the user to create an overpressure inside the tank to increase the composition rate to the application for example. Preferably, the applicator according to the present invention is devoid of a valve, in particular between the reservoir and the application element 3. Preferably, the applicator according to the present invention does not require any pressure on the body 2 to favor the flow of the composition through the application element 3. To use the applicator, the user grasps the body 2 in the manner of a pen and can bring the tip of the application element into contact nail, including the inner edge to the outer edge of the nail. The body 2 internally defines a reservoir of composition P. According to one particular embodiment, the body 2 may comprise a block 7 delimiting a distribution, or supply, channel of composition P for the application element 3. channel may contain at least a portion of the application element 3, comprising a portion forming a sampling wick of the composition P. This channel may optionally be surrounded by a block 7 for retention of the composition P, made in a impermeable material to the composition, which may optionally be surrounded by a sheath 8 whose outer diameter substantially corresponds to the inner diameter of the body 2. As a result, the composition P to be dispensed is not trapped in a porous composition retention block in this embodiment. Indeed, this embodiment provides a hydrophobic block 7. Such a block is thus incapable of impregnating composition P which will remain in the free state in the reservoir. However, this block may optionally pass air in order to regulate the pressure differences between the inside and the outside of the tank, in particular following a dispensing of product by the application element 3.

This second embodiment also preferably comprises, in the composition tank P, a ball 9 able to be displaced by agitation, for example manual, of the packaging and application system, and this in order to facilitate the (re) dispersion of the pigment (s) and / or avoid sedimentation of pigment (s).

In the example shown, the block 7 occupies most of the height of the applicator 1 and bears at one end against the bottom 5, so that the block 7 forms the composition tank P. The transport of the composition of the reservoir to the application element 3 is not performed by capillarity, in the sense that the composition P is in direct contact with the application element 3, without the intermediary of a block of retention of said composition. In other words, the composition P to be dispensed is not completely trapped in a retention block of the composition. In a particular embodiment, such an applicator may be devoid of block 7. The application element 3 is advantageously engaged in a chimney 12 which, in the example in question, is made in one piece with the body 2 by molding thermoplastic material. The application element 3 is advantageously made of compressed fibers. According to a particular embodiment of the invention, the application element 3 may consist of several juxtaposed elements. One method of manufacturing such an applicator member and wick is, for example, to gather polyester-type synthetic fibers by adjusting the tension and subjecting them to hot compression molding in a cylindrical mold. The cylindrical bundle of fibers formed, with the required cross section, preferably circular, is introduced through an orifice into a resin bath in solution and passed through the resin in solution. The cylindrical fiber bundle impregnated with the resin in solution is passed through a heating oven to remove the solvent and cure the resin. The cylindrical bundle of fibers is then cut to the corresponding length. To form a tip, the cut pieces are ground at one end and tapered at a point. The resins used to bond the fiber bundle include thermosetting resins such as unsaturated polyesters, urea formaldehyde, phenol, epoxy, melamine, polyurethane resins, and thermoplastic resins such as polyvinyl acetates, polyolefins and low-density polyesters. Fusion point. Preferably, the synthetic resin used to bind the polyester fibers is a polyurethane type resin.

In this embodiment, the application element 3 may for example have a height in the axis of elongation of the device ranging from 40 to 100 mm, in particular from 45 to 65 mm, in particular for a cross section having a diameter in its widest part from 2 to 8mm, especially from 4 to 6mm.

A felt tip applicator according to the invention is advantageously such that the average rate of capillary rise of the composition is greater than or equal to 0.50 mm / s, preferably greater than or equal to 0.60 mm / s, preferably ranges from 0.70 mm / s to 5 mm / s, better from 0.75 mm / s to 2 mm / s. The method used to determine the capillary rise speed through the application element (in particular the wick) is as follows: - Use an application element 3 preferably with a maximum height of 12.5 mm and preferably a regular geometry, otherwise cut the mine to meet its requirements, - Put 4 ml of a composition according to the invention in a cylindrical glass container having a diameter of 45 mm, - Place the application element 3 in the center of the cylinder perpendicular to the support and start the timer, - Measure the time so that the entire top of the application element 3 is wet, and - Divide the height of the element application 3 by the capillary rise time to calculate the capillary rise rate through the application element 3. An application element 3 according to the invention has a percentage of free volume ranging from from 50 to 80, more particularly from 55 to 75.

The method used to determine the percentage of free volume of the application element 3 (in particular the wick) is as follows: 1- Calculate the volume of the application element based on the dimensions of the application element, since preferably the applicator element is of cylindrical shape (for example: Vmeche = TT r2 h), 2- Weigh the mass of the empty applicator element 3, 3- Place the application element 3 in distilled water until the wick is filled, 4- Remove the excess water quickly and weigh the application element 3 filled with water, 5- Calculate the water mass absorbed by the wick corresponding to the mass of the filled applicator element 3, minus the weight of the empty wick, 6- Calculate the volume of absorbed water corresponding to the mass of water absorbed by the applicator element 3, divided by the density of the water, and 7- Calculate the percentage of free volume of the corresponding application element 3 to the volume of water absorbed multiplied by 100, divided by the volume of the application element 3. According to a preferred embodiment, an application element of the felt tip type according to the invention has the following characteristics: - a capillary rise rate (mm / sec): 0.75 mm / sec to 1.5 mm / sec, - a free volume percentage ranging from 55 to 75, and - is made of polyester fibers having a cross-section of relative to an axis of elongation of said wick from 40 to 50pm.

The invention further relates to a use of an assembly as previously defined for the coating, in particular the makeup, of the nails. EXAMPLES Nail polish compositions were prepared and introduced into a felt tip applicator of the same type as that described in the present application. Phase Ingredients Composition Composition Composition with contents according to according to percentage the invention 1 the invention 2 the invention 3 A COPOLYMER 67.97 67.97 67.97 STYRENE / ACRYLATES / AMMONIUM METHACRYLATE copolymer dispersed in water at 42% by weight dry matter (Syntran PC 5620 from Interpolymer) B Propylene glycol 1.77 1.77 - dibenzoate (Lexfeel Shine from Inolex Chemical Company) PPG-2 BUTYL ETHER 3.25 3.25 - (Dowanol DPnB from Dow Chemical) Texanol Ester Alcohol / - - 5,02 2,2,4-Trimethy1-1,3-pentanediol Monoisobutyrate (Eastman) AMMONIUM 0.41-0.41 ACRYLATES COPOLYMER, copolymer with 23% dry matter dispersed in water (Syntran KL219-CG from Interpolymer) Mixture SMA 1000 HNa - 0.41 - 57.5% Gray Valley solution dispersed in water C COPOLYMER 0.5 0.5 0.5 DI VI NYLDIMETHICONE / DIMETHICONE, 60% dry matter copolymer dispersed in water water (Dow Corning HMW 2220) D 0.1 0.1 0.1 simethicone emulsion based on polyethylene glycol sorbitan tristearate at 10% dry matter in water (Xiameter AFE -1510 from Dow Corning) E Microbiologically clean water 7.26 7.26 7.26 INULIN LAURYL 0.26 0.26 0.26 CARBAMATE (Inutec SP1 from Beneo Bio-based Chemicals) Red 7 / Cl 15850 2 2 2 (Unipure Red LC 3079 OR from Sensient) AMMONIUM 0.48 - 0.48 ACRYLATES COPOLYMER, Water-dispersed 23% dry matter copolymer (Syntran KL219-CG from Interpolymer) SMA blend 1000 HNa - 0.48 - Solution (Cray Valley) 57.5% dispersed in water F Water 9.8 9.8 9.8 (Qsp100) (Qsp100) (Qsp100) Pigment paste based 0.2 0.2 0.2 titanium WD-Ti50 (Daito Kasei) Water 9.8 9.8 9.8 G Preservative system Qs Qs Qs The protocol for the preparation of the above compositions is as follows: - Slowly add the pre-mixed Phase B to the phase A with vigorous stirring with a Rayneri - Add Phase C then Phase D to mixture A and B with vigorous stirring with a Rayneri - Prepare phase E by pre-dispersing the following 4 raw materials in R Spying the following order: - Microbiologically clean water - Inutec SP1 - Unipure Red LC 3079 OR - Syntran KL219-CG or SMA 1000 HNa Mix Grind the pigment paste with a ball mill for one hour with 10 ° cooling C (15 m / s speed with Dispermat TML1) - Add Phase E prepared after grinding to the mixture with vigorous stirring with a Rayneri - Add Phase F to the mixture with vigorous stirring with a Rayneri - Mix with vigorous stirring with a Rayneri for 50 minutes - Add the pre-mixed Phase G to the mixture with vigorous stirring with a Rayneri. - Mix with vigorous stirring with a Rayneri for 10 minutes. Thanks to the packaging and application systems in accordance with the present invention, the compositions according to containing inorganic pigments, in particular of the metal oxide type, are distributed regularly. In addition, in the event of a sedimentation of the pigments, a redispersion of said pigments in the compositions, by stirring the system, is observed. By now applying this same composition according to the invention by means of a felt applicator as described in EP2109481, in which the transit of the composition to the application element is by capillarity through a porous block of retention of composition, the metal oxides have a tendency to sediment and can not be redispersed by stirring, leading to an inhomogeneous composition distribution, unlike a packaging system and application according to the invention. 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. 15

Claims (11)

REVENDICATIONS1. An assembly for coating a nail, in particular a make-up or a care product, comprising: a) a coating composition for a nail, in particular a make-up or a care, preferably having a viscosity of less than or equal to 20 cPs, comprising: - an aqueous continuous phase, - a particulate phase comprising: i) at least one film-forming polymer in the form of particles in aqueous dispersion, ii) at least one dyestuff chosen from pigments, in particular inorganic pigments, in particular chosen from metal oxides, at least one polymeric dispersing agent capable of dispersing the particulate phase in the aqueous phase, b) a packaging and application system comprising an applicator, and a composition tank in which said composition is in the state. free, the applicator being at least partly in direct fluid contact with the composition without the intermediary of a retention block of said composition, of preferably said applicator having a free volume percentage ranging from 50 to 80%. 2. The assembly of claim 1, wherein the dispersing agent (s) comprises (include) at least one ionic polymeric polymeric dispersing agent selected from compounds of formula (I) below: Formula (I) Formula (I) wherein: - R1 represents a hydrogen atom or a methyl group or a group -C (O) OX + or a group -C (O) O -R6, with R6 representing an alkyl group linear or branched C1-050, preferably C1-08, preferably C1-04, - R2, R3, and R4, identical or different, representing a hydrogen atom or a methyl group, - R5 representing a phenyl group, or a linear or branched C1-C20, preferably C1-C20, alkyl group, or a -C-O (O) O-R7 group, with R7 representing a linear or branched alkyl group, C1-050, preferably C1-08, preferably C1-04, x represents an integer ranging from 1 to 100, y represents an integer ranging from 0 to 100, n representing a n an integer shadow of from 1 to 1000, where x, y, and n are selected so that the equation "n (x + y)" is greater than or equal to 20, preferably greater than or equal to 50, - X + representing a cation chosen especially from a sodium atom, a potassium atom, or an ammonium group, preferably is an ammonium group. 3. An assembly according to claim 1 or 2, the dispersing agent (s) comprises (include) at least one polymeric dispersing agent of ionic polymer type chosen from the following compounds of formula (I '): n Formula (I ') Formula (I') in which: - R1, R2, R3, and R4 representing a hydrogen atom or a C1-C6 alkyl group, in particular a methyl, - R5 representing a linear or branched, in Cl-050, preferably in Cl-C8, preferably in Cl-C4, in particular a methyl, - x represents an integer ranging from 1 to 100, y represents an integer ranging from 0 to 100, n representing an integer between 1 and 1000, where x, y, and n are chosen so that the equation "n (x + y)" is greater than or equal to 20, preferably greater than or equal to 50, X + representing a cation chosen in particular from a sodium atom, a potassium atom, or an ammonium group, preferably is an ammonium group. 4. Composition according to claim 1 or 2, wherein the dispersing agent (s) comprises (include) at least one polymeric dispersing agent of the ionic polymer type chosen from the following compounds of formula (I "): Formula (I ") Formula (I") in which: - R1 represents a group -C (O) O- / X + or a group -C (O) O -R5, with R5 representing an alkyl group, linear or branched, C 1 -C 50, preferably C 1 -C 8, preferably C 1 -C 4, in particular methyl, - R 2, R 3, and R 4 representing a hydrogen atom or a C 1 -C 6 alkyl group, methyl, x is an integer from 1 to 100, y is an integer from 0 to 100, n is an integer from 1 to 1000, and x, y, and n are selected from in such a way that the equation "n (x + y)" is greater than or equal to 20, preferably greater than or equal to 50, - X + representing a cation chosen in particular from an atom of dium, a potassium atom, or an ammonium group, preferably is an ammonium group. An assembly according to any one of the preceding claims, wherein the dispersing agent (s) comprises (include) at least one polymeric nonionic polymeric dispersant selected from hydrophobic modified polysaccharides. An assembly according to any one of the preceding claims, wherein the dispersing agent (s) is (are) present in a total content greater than or equal to 0.05% by weight, and lower or equal to 3% by weight, relative to the total weight of the composition, in particular ranging from 0.1 to 2% by weight, relative to the total weight of the composition. 7. An assembly according to any one of the preceding claims, wherein the composition comprises at least one auxiliary filming agent, advantageously chosen from plasticizers, coalescers, and their mixture, preferably the agent (s). s) filming auxiliary (s) corresponding to the following formula (II): Formula (II) Formula (II) in which: R and R ', which may be identical or different, represent a linear or branched alkyl group, C1-08, preferably C1-04, or an aromatic group, R "representing a hydrogen atom or a linear or branched C1-C8, preferably C1-C4, alkyl group, preferably an atom Of hydrogen, 0 n R "m and n, identical or different, representing an integer inclusive between 0 and 1, preferably equal to 0, p represents an integer inclusive between 1 and 3. 8. An assembly according to any one of the preceding claims, wherein the composition comprises at least one simethicone, preferably introduced in emulsion form. An assembly according to any one of the preceding claims, wherein the composition comprises at least one silicone gum. 10. An assembly according to any one of the preceding claims, wherein the packaging and application system comprises an applicator made of compressed fibers. 11. Use of an assembly according to any one of claims 1 to 10 for the coating, in particular the makeup, of the nails.