FR2907337A1 - Nail varnish useful to form a glossy and long lasting film after applying on the nails, comprises an organic solvent medium, film forming polymer and a gelifying agent - Google Patents

Abstract

Nail varnish comprises an organic solvent medium, film forming polymer, like cellulosic polymers and a gelifying agent comprising a compound derived from the reaction of polyisocyanate and primary amine and optionally clay at less than 5 wt.%. An independent claim is included for the cosmetic process or non-therapeutic care for makeup of nails comprising the application of at least a layer of the nail varnish composition on the nails.

Description

The present invention relates to a nail polish comprising a medium

  organic solvent and at least one particular gelling agent. The nail varnish composition, colored or transparent, can be used as a base for nail polish or "base-coat" in English terminology, as a nail makeup product, as a finishing composition, also called "top-coat", to be applied to the nail makeup product or even as a cosmetic nail care product.

  This composition can be applied to human nails or even false nails. The organic solvent medium nail polish compositions generally comprise a film-forming polymer and thickening agents to thicken the organic phase of these compositions. The thickening of the organic phase makes it possible in particular to improve the suspension of the pigments present in this phase and to prevent the sedimentation of these during storage. The thickening of the organic phase also facilitates the setting of the composition out of its packaging and the distribution of said composition on the area to be treated.

  To thicken nail polish compositions, clays such as bentones are commonly used. Bentones are clay particles, more particularly hectorite particles surface-modified with quaternary ammonium alkyl chlorides. Although they provide the compositions in which they are incorporated a rheofluidifying character and satisfactory thixotropic behavior, the bentonites are however difficult to implement and require in particular a dispersing step. This dispersing step requires a lot of mechanical energy to wet and deagglomerate the particles of the bentone, in order to obtain a homogeneous gel containing a minimum of defects. In addition, the presence of bentones in film-forming compositions, such as nail polishes, modifies the properties of the film obtained after the application of the composition. Finally, the fact that the bentones are in the form of micron sized particles, causes opacification and matification of the formed film and thus a significant loss of brilliance of this film.

  It would therefore be desirable to have novel gelling or thickening agents which do not have the abovementioned disadvantages and in particular do not contribute to reducing the gloss of the deposited film.

Thus, the authors surprisingly discovered that by incorporating into a nail polish composition, a specific gelling agent, it was possible to obtain a composition, which has excellent shear thinning and thixotropic properties, a Viscosity in absence of shear sufficiently high to prevent sedimentation of the sediments contained in this composition, and which, after application, gives films no longer exhibiting the inherent dullness of the films obtained from compositions comprising clays as gelling agents .

The present invention therefore relates to a nail polish comprising an organic solvent medium, at least one film-forming polymer chosen from cellulose polymers and at least one compound derived from the reaction of at least one polyisocyanate and at least one amine. primary, as gelling agent in the majority of said varnish. By major gelling agent, it is meant that the gelling agent represents at least 50% by weight relative to the total weight of the gelling agents present in the composition. According to another aspect, the subject of the invention is a nail polish comprising an organic solvent medium, at least one film-forming polymer chosen from cellulosic polymers and at least one compound derived from the reaction of at least one polyisocyanate and from at least one At least one primary amine, said varnish comprising less than 5% by weight of clays, especially of bentonite, relative to the total weight of the composition. According to one variant, the subject of the invention is a nail varnish comprising an organic solvent medium and at least one compound resulting from the reaction of at least one polyisocyanate and at least one primary amine, said varnish being free of clays .

The invention also relates to the use of a nail polish as defined above to obtain, after deposit on the nail, a glossy film and good performance. The invention also relates to a cosmetic process for makeup or non-therapeutic care of the nails comprising the application on the nails of at least one layer of a nail polish composition as defined above. The invention also relates to the use in a nail polish composition comprising an organic solvent medium, of at least one polymer chosen from cellulosic polymers of at least one compound resulting from the reaction of at least one polyisocyanate and at least one primary amine, as majority gelling agent in said varnish, to obtain good stability and good homogeneity of the color over time, as well as the formation of a film on the nails shiny and of good behavior. Nail polish comprises a cosmetically acceptable medium, that is to say a non-toxic medium that can be applied to keratinous substances of human beings, in particular the nails. Organic solvent medium The organic solvent medium of the composition may comprise at least one organic solvent or a mixture of organic solvents. The organic solvent may be chosen from: ketones which are liquid at ambient temperature, such as methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, isophorone, cyclohexanone, acetone; alcohols which are liquid at room temperature, such as ethanol, isopropanol, diacetone alcohol, 2-butoxyethanol and cyclohexanol; propylene glycol ethers which are liquid at room temperature, such as propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate or dipropylene glycol mono-n-butyl ether; cyclic ethers such as γ-butyrolactone; short-chain esters (having from 3 to 8 carbon atoms in total) such as ethyl acetate, methyl acetate, propyl acetate, isopropyl acetate, acetate of n-butyl, isopentyl acetate, methoxypropyl acetate, butyl lactate; Ethers which are liquid at ambient temperature, such as diethyl ether, dimethyl ether or dichlorodiethyl ether; alkanes which are liquid at ambient temperature, such as decane, heptane, dodecane or cyclohexane; alkyl sulphoxides such as dimethyl sulphoxide; Aldehydes which are liquid at room temperature, such as benzaldehyde or acetaldehyde; ethyl 3-ethoxypropionate; carbonates such as propylene carbonate, dimethyl carbonate, acetals such as methylal; And their mixtures.

Preferably, the solvent is selected from short chain esters having from 3 to 8 carbon atoms in total, such as ethyl acetate, methyl acetate, propyl acetate, acetate and the like. isopropyl, n-butyl acetate, isopentyl acetate, methoxypropyl acetate, butyl lactate, isopropanol and mixtures thereof. The organic solvent medium may represent from 10 to 95% by weight, relative to the total weight of the composition, preferably from 15% to 80% by weight, and more preferably from 20 to 70% by weight.

The cosmetically acceptable medium of the composition according to the invention may optionally comprise an aqueous medium. The aqueous content of the composition may range from 5 to 95% by weight relative to the total weight of the composition, preferably from 50 to 70% by weight.

Preferably, the composition comprises less than 10% by weight of water, preferably less than 5% by weight relative to the total weight of the composition. Gelling agent The gelling agent used in the composition according to the invention contains at least one compound derived from the reaction of at least one polyisocyanate and at least one primary amine. By primary amine means a primary monoamine or a polyamine comprising at least 2 primary amine groups. The compound resulting from the reaction of at least one polyisocyanate and at least one primary amine may be present in the composition in a content ranging from 0.1 to 20% by weight relative to the total weight of the composition, preferably from 0.5 to 10% by weight, more preferably from 0.5 to 6% by weight. a) Polyisocyanate The polyisocyanate may be chosen from linear or branched, substituted or unsubstituted aliphatic or cyclic polyisocyanates comprising from 1 to 55 carbon atoms and may comprise at least one heteroatom. It may advantageously be chosen from heterocyclic triisocyanates, aliphatic or cyclic diisocyanates whose hydrocarbon chain, optionally substituted by a heteroatom, comprises from 2 to 40 carbon atoms, preferably from 5 to 20 carbon atoms, preferably from 5 to 14 carbon atoms, and more preferably from 6 to 12 carbon atoms. There may be mentioned in particular: aliphatic diisocyanates whose hydrocarbon chain comprises from 3 to 20 carbon atoms, such as methylene diisocyanate, trimethylene diisocyanate, tretramethylene diisocyanate, hexamethylene diisocyanate, dipropyl ether diisocyanate, thiodipropyl diisocyanate,,, '-dipropyl ether diisocyanate, thiodipropyl diisocyanate, diisocyanates whose hydrocarbon chain comprises at least one cyclic group, aromatic or non-aromatic, and comprising from 3 to 40 carbon atoms such as cyclohexyl 1,4-diisocyanate, dicyclohexylmethane-4,4'-diisocyanate, 1,5-dimethyl-2,4-bis (isocyanatoethyl) benzene, 1,5-dimethyl-2,4-bis (isocyanatoethyl) benzene 1,3,5-trimethyl-2,4-bis (isocyanatomethyl) benzene, the heterocyclic diisocyanate sold under the name Desmodur TT by the company Bayer (INCI name 2,4-toluene diisocyanate), dicyclohexyldimethylmethane-4, 4'-toluene diisocyanate, 2,6-toluen diisocyanates and diphenylmethane-4,4'-diisocyanate, heterocyclic trimers such as the isocyanurate of formula below OIIC OCNiRuN ~ NùRùNCO C ~ C ~ O 1 RùNCO 20 resulting from the trimerization of 3 molecules of aliphatic diisocyanates OCN-R-CNO, where R is a linear, branched or cyclic hydrocarbon radical containing from 2 to 30 carbon atoms, preferably from 3 to 20 carbon atoms, and in particular the isocyanurates resulting from the reaction of hexamethylene molecules Diisocyanate, and mixtures thereof. The polyisocyanate may be advantageously selected from hexamethylene diisocyanate, heterocyclic trimers such as the isocyanurate of formula (I) above, and mixtures thereof. (B) Primary amines Primary amines may include monoamines or polyamines. They preferably have a linear or branched, aliphatic or cyclic hydrocarbon chain comprising from 1 to 55 carbon atoms, preferably from 1 to 24 carbon atoms and better still from 1 to 12 carbon atoms. The hydrocarbon chain may comprise at least one ether group or a hydroxyl radical comprising from 1 to 12 carbon atoms or cyclic aromatic or non-aromatic atoms containing from 4 to 10 carbon atoms. The primary amines may in particular be chosen from benzylamine. , ethylamine, n-propylamine, sec-propylamine, n-butylamine, sec-butylamine, tert-butylamine, n-pentylamine, α-methylbutylamine, α-ethylpropylamine, hexylamine octylamine, decylamine, stearylamine, cyclohexylamine, aniline, hexamethylenediamine, and mixtures thereof.

It may also be mentioned as primary amine comprising at least one ether group or a hydroxyl radical: ethanolamine, 6-aminohexanol, methoxybenzylamine, methoxypropylamine, 3,4-dimethoxyphenylethylamine, 2,5-dimethoxyaniline, furfurylamine, tetrahydrofurfurylamine, bis (3-aminopropyl) polytetrahydrofuran having a molecular weight of 750, and mixtures thereof. The amines are advantageously chosen from cyclic primary monoamines, in particular aromatic containing from 1 to 12 carbon atoms such as benzylamine. Such gelling agent and their preparation are described in particular in documents EP 0192304 and EP0198519, the contents of which are incorporated by reference into the present application.

As a gelling agent that may be used in the varnish according to the present invention, mention may be made for example of those sold under the reference SETAL or under the reference SETALUX by the company AKZO NOBEL, such as the SETALUX 81198 SS-55 and SETALUX 81753 SS -55. Compounds derived from the reaction of at least one polyisocyanate and at least one optically active amine as described in document W005 / 005557 may also be mentioned.

The compound resulting from the reaction of at least one polyisocyanate and at least one primary amine may be used alone or in combination with a resin acting as a binder. As resin, mention may be made of: diol esters, polyesters; polyurethanes; alkyd resins which can be modified or not by addition of oil; acrylate resins or methacrylates, epoxy resins, copolymers comprising monon (meth) acrylate, styrene and / or vinyl chloride monomers, unsaturated polyester resins which may be optionally mixed with compounds styrene and / or another monomeric compound, for example a (meth) acrylate monomer or an allyl compound; alkyd resins soluble in water; water-soluble polyesters or diol esters, water-soluble polyurethanes, water-soluble acrylate resins, oils, and other well known natural and synthetic resins, such as those discussed below. Film-forming Polymer The composition comprises at least one film-forming polymer chosen from cellulosic polymers. According to the present invention, the term "film-forming polymer" means a polymer capable of forming on its own or in the presence of an auxiliary film-forming agent, a film on a support, in particular on keratin materials.

The cellulosic polymers may be selected from nitrocellulose, cellulose esters such as cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, alkylcelluloses such as ethyl cellulose and propyl cellulose, and mixtures thereof. . It is particularly possible to use nitrocellulose RS 1/8 sec; RS '/ 4 sec. ; RS% 2 sec. ; RS 5 25 sec. ; RS 15 sec. ; RS 35 sec. ; RS 75 sec .; RS 150 sec; AS '/ 4 sec. ; AS% 2 sec. ; SS '/ 4 sec. ; SS% 2 sec. ; SS 5 sec, especially marketed by the company HERCULES. The cellulosic polymer may be present in the composition according to the invention in a solids content ranging from 0.1% to 40% by weight, relative to the total weight of the composition, preferably ranging from 0.5% to 30% by weight, and more preferably from 1% to 20% by weight. The composition may also comprise an additional film-forming polymer which may be chosen from synthetic polymers, of radical type or of polyconden-35-sat type, polymers of natural origin and their mixtures.

Additional film-forming polymers that may be mentioned in particular are polyurethanes, acrylic polymers, vinyl polymers, polyvinyl butyrals, alkyd resins, resins derived from aldehyde condensation products, such as arylsulfonamide formaldehyde resins such as resin. toluene sulfonamide formaldehyde, epoxy aryl-sulfonamide resins or ethyl tosylamide resins. Mention may be made, for example, of the toluene sulfonamide formaldehyde resin "Ketjentflex MS80" from the company Akzo or "Santolite MHP", "Santolite MS 80" from the company Fontronno or "Resimpol 80" from the company PAN AMERICANA, the alkyd resin "BECKOSOL ODE" 230-70-E "from the company DAINIPPON, the acrylic resin" ACRYLOID 10 B66 "from the company ROHM & HAAS, the polyurethane resin" TRIXENE PR 4127 "from the company BAXENDEN. According to one embodiment of the invention, the additional film-forming polymer is a film-forming linear ethylenic block polymer, which preferably comprises at least a first sequence and at least a second sequence having different glass transition temperatures (Tg), said first and second sequences being interconnected by an intermediate sequence comprising at least one constituent monomer of the first block and at least one constituent monomer of the second block.

Advantageously, the first and second sequences and the block polymer are incompatible with each other. Such polymers are described for example in EP 1411069 or W004 / 028488.

The film-forming polymers (cellulosic and additional) may be present in the composition according to the invention in a total solids content ranging from 0.1% to 60% by weight, relative to the total weight of the composition, preferably ranging from from 2 to 40% by weight, and more preferably from 5% to 30% by weight.

Auxiliary Film-forming Agent To improve the film-forming properties of the nail polish composition, an auxiliary film-forming agent may be provided. Such an auxiliary film-forming agent may be chosen from all the compounds known to those skilled in the art, as being capable of fulfilling the desired function, and may especially be chosen from plasticizers and coalescing agents of the polymer (s). ) film-forming (s).

Thus, the composition may further comprise at least one plasticizer and / or a coalescing agent. In particular, mention may be made, alone or as a mixture, of the usual plasticizers and coalescing agents, such as: 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; glycol esters; propylene glycol derivatives and in particular propylene glycol phenyl ether, propylene glycol diacetate, dipropylene glycol ethyl ether, tripropylene glycol methyl ether and diethylene glycol methyl ether, propylene glycol butyl ether; esters of acids, in particular carboxylic acids, such as citrates, phthalates, adipates, carbonates, tartrates, phosphates, sebacates; Oxyethylenated derivatives, such as oxyethylenated oils, especially vegetable oils, such as castor oil; and their mixtures. The type and amount of auxiliary filming agent may be selected by those skilled in the art on the basis of his general knowledge. For example, the content of plasticizer and / or coalescence can range from 0.01% to 20% and in particular from 0.5% to 10% by weight relative to the total weight of the composition.

Additional gelling agent The composition may comprise, in addition to the compound resulting from the reaction of at least one polyisocyanate and at least one primary amine, an additional gelling agent which may in particular be chosen from: silicas such as hydrophobic silicas such as those described in EP-A-898960, and for example sold under the references "AEROSIL R812" by the company Degussa, "CAB-O-SIL TS-530," CAB-0-SIL TS- 610 "," CAB-O-SIL TS-720 "by the company Cabot," AEROSIL R972 "," AEROSIL R974 "by the company Degussa, hydrophilic silicas such as that sold under the reference" AEROSIL 200 "by the company Degussa clays, such as montmorillonite, modified clays, such as bentones, for example, hectorite stearalkonium, stearalkonium bentonite, polysaccharide alkyl ethers (in particular the alkyl group of which contains 1 to 24 carbon atoms, preferably1 to 10, more preferably 1 to 6, and more especially 1 to 3) such as those described in EP-A-898958, and mixtures thereof. According to one particular embodiment, the varnish according to the invention comprises less than 5% by weight of clays, relative to the total weight of the composition, in particular less than 5% by weight of bentone, preferably less than 3% by weight. % by weight of clays, better still, less than 2% by weight, even better, less than 1% by weight of clays, or even free of clays.

The total proportion of additional gelling agent (s) in the compositions according to the invention may range from 0.01 to 15% by weight, relative to the total weight of the composition, preferably from 0.5 to 15% by weight. better from 0.5 to 10% by weight. According to one embodiment, the compound resulting from the reaction of at least one polyisocyanate and at least one primary amine represents at least 50% by weight relative to the total weight of the gelling agents present in the composition, preferably at least 60% by weight, more preferably at least 70% by weight, more preferably at least 80% by weight and preferably at least 90% by weight.

Dyestuff The composition according to the invention may further comprise one or more dyestuffs chosen from water-soluble dyes, and pulverulent dyestuffs such as pigments, nacres, and flakes well known to those skilled in the art.

The dyestuffs may be present in the composition in a content ranging from 0.01% to 50% by weight, based on the weight of the composition, preferably from 0.01% to 30% by weight. By pigments, it is necessary to include particles of any shape, white or colored, mineral or organic, insoluble in the physiological medium, intended to color the composition. By nacres, it is necessary to understand particles of any iridescent form, in particular produced by certain molluscs in their shell or else synthesized.

The pigments may be white or colored, mineral and / or organic. Examples of inorganic pigments are titanium dioxide, optionally surface-treated, zirconium or cerium oxides, and zinc, iron (black, yellow or red) or chromium oxides. manganese violet, ultramarine blue, chromium hydrate and ferric blue, metallic powders such as aluminum powder, copper powder. Among the organic pigments, mention may be made of carbon black, D & C type pigments, and lacquers based on cochineal carmine, barium, strontium, calcium, and aluminum. The pearlescent pigments may be chosen from white pearlescent pigments such as mica coated with titanium, or bismuth oxychloride, colored pearlescent pigments such as titanium mica coated with iron oxides, titanium mica coated with, inter alia, blue. ferric oxide or chromium oxide, titanium mica coated with an organic pigment of the aforementioned type as well as pearlescent pigments based on bismuth oxychloride. The water-soluble dyes are, for example, beet juice, methylene blue. Charks The composition according to the invention may furthermore comprise one or more fillers, in particular in a content ranging from 0.01% to 50% by weight, relative to the total weight of the composition, preferably ranging from 01% to 30% by weight. By fillers, it is necessary to include particles of any form, colorless or white, mineral or synthetic, insoluble in the medium of the composition regardless of the temperature at which the composition is manufactured. These fillers serve in particular to modify the rheology or the texture of the composition. The fillers may be inorganic or organic in any form, platelet-shaped, spherical or oblong, irrespective of the crystallographic form (for example sheet, cubic, hexagonal, orthorhombic, etc.). Mention may be made of talc, mica, polyamide (nylon) powders (Arkema's Orgasol), poly-13-alanine and polyethylene, tetrafluoroethylene polymer powders (Teflon), lauroyl-lysine, and the like. starch, boron nitride, polymeric hollow microspheres such as those of polyvinylidene chloride / acrylonitrile such as Expancel (Nobel Industry), acrylic acid copolymers (Polytrap from Dow Corning) and resin microspheres from silicones (for example Toshiba's Tospearls), elastomeric polyorganosiloxane particles, precipitated calcium carbonate, magnesium carbonate and hydrocarbonate, hydroxyapatite, hollow silica microspheres (Silica Beads from Maprecos), microcapsules of glass or ceramic, metal soaps derived from organic carboxylic acids having from 8 to 22 carbon atoms, preferably from 12 to 18 carbon atoms, for example stearate; spleen of zinc, magnesium or lithium, zinc laurate, magnesium myristate. Other Additives The composition may further comprise other ingredients commonly used in cosmetic compositions. Such ingredients may be chosen from spreading agents, wetting agents, dispersing agents, defoamers, preservatives, UV filters, active agents, surfactants, moisturizing agents, perfumes, neutralizers, stabilizers, antioxidants. Of course, those skilled in the art will take care to choose this or these optional additional compounds, and / or their quantity, in such a way that the advantageous properties of the composition for use according to the invention are not, or not substantially, 15 impaired by the addition envisaged. According to another aspect, the subject of the invention is a nail polish product comprising: i) a container delimiting at least one compartment, said container being closed by a closure element and ii) a composition according to the invention which is arranged inside said compartment. The container can be in any suitable form. It may especially be in the form of a bottle and may be, at least partly, a material such as glass. However, materials other than glass can be used such as thermoplastic materials such as PP or PE or as a metal. The closure element can be coupled to the compartment by screwing in the closed position of the container. Alternatively, the coupling between the closure element and the container can be done other than by screwing, in particular by snapping. The container is preferably equipped with an applicator which may be in the form of a brush consisting of at least one tuft of bristles. Alternatively, the applicator is in form other than a brush, for example in the form of a spatula or a foam tip.

The following examples illustrate the invention in a nonlimiting manner. Unless otherwise indicated, the amounts are given as a percentage by weight relative to the total weight of the composition. EXAMPLE 1 Nail Polish The nail polish having the following composition (% by weight) was prepared: Nitrocellulose 30% isopropyl alcohol (visco 7.52 sec .: E22 - 1/2 S, IDYL EMV). Berge-rac) Nitrocellulose 30% isopropyl alcohol (Azur 2.07 E80 from Bergerac) Ethyl tosylamide resin (Resimpol 8 from Pan-3.46 Americana) Glycerophthalic acid-alkyd resin esterified with 11.02 branched fatty acids 70% ethyl acetate (Beckosol ODE 230 70E from Dainippon Ink and Chemicals), SETALUX 81198 SS-55 from Akzo Nobel (mixture of 12.75 of compound resulting from the reaction of at least one polyisocyanate and at least one primary amine, resin and butyl acetate, 55% active ingredients) Ethyl acetate 23,27 Acetyl tributyl citrate 1,22 Butyl acetate Qsp 100 Isopropyl alcohol 6,13 Examples 2 and 3: Nail varnish On prepares a nail polish according to the invention (example 2) comprising the polyurea gelling agent as an age A main gelling agent and a varnish outside the invention (Example 3) comprising bentone as a major gelling agent. EXAMPLE 2 Example 3 (Invention) (Comparative) Nitrocellulose 30% isopropyl alcohol (viscosity: 6.97 11.66 E22 1/2 S, IDYL EMV from Bergerac) Nitrocellulose 30% isopropyl alcohol (Azur 1,92 2.88 Bergerac E80) Ethyl tosylamide resin (Resimpol 8 of Pan-2.52 5.24 Americana) Acid-esterified glycerophthalic acid resin 16.8 16.71 branched fatty acids in ethyl acetate at 70 ° C. % (Beckosol ODE 230 70E from Dainippon Ink and Chemicals). SETALUX 81198 SS-55 from Akzo Nobel (mixture of 12.75 - compound resulting from the reaction of at least one polyisocyanate and at least one primary amine, resin and butyl acetate, with 55% active ingredients) Modified hectorite stearyl benzyl dimethyl ammonium -0.23 (BENTONE 27 V Elementis) Ethyl acetate 21.57 24.48 Acetyl tributyl citrate 1.62 1.84 Butyl acetate Qsp 100 Qsp 100 Isopropyl alcohol 7.03 3, The gloss of each varnish was measured according to the following protocol: On a LENETA brand contrast card and of reference FORM 1A PENOPAC, a 300 μm thick layer of the composition of which the composition is to be evaluated is spread. medium gloss, using an automatic spreader. The layer covers the white background and the black background of the map. It is left to dry for 24 hours on a bench thermostated at 30 C and then measures the gloss at 20 and 60 on the white background (3 measurements) and on the black background (3 measures) using a BYK GARDNER brand 10 glossmeter and microTRl-GLOSS reference. The results are as follows: Gloss A 20 A 60 Example 2 78 92 Example 3 64 87 15 The composition according to the invention (Example 2) has a higher gloss than the composition of Example 3 comprising bentone as a major gelling agent .

Claims (26)

  1. Nail polish comprising one comprising an organic solvent medium, at least one film-forming polymer chosen from cellulosic polymers and at least one compound derived from the reaction of at least one polyisocyanate and at least one primary amine as a predominant gelling agent in said varnish.   2. Nail polish comprising an organic solvent medium, at least one film-forming polymer chosen from cellulose polymers and at least one gelling agent containing at least one compound derived from the reaction of at least one polyisocyanate and at least one primary amine said varnish comprising less than 5% by weight of clays, relative to the total weight of the composition.   3. Nail polish according to claim 2, characterized in that it comprises less than 3% by weight of clays, relative to the total weight of the composition, better, less than 2%, even better, less than 1%. in weight of clays.   4. Nail polish according to claim 1 or 2, characterized in that it is free of clays.   5. Nail polish according to one of the preceding claims, characterized in that the polyisocyanate is chosen from linear or branched, substituted or unsubstituted linear or branched aliphatic or cyclic polyisocyanates comprising from 1 to 55 carbon atoms and which may comprise at least a heteroatom. 25   6. Nail polish according to one of the preceding claims, characterized in that the polyisocyanate is chosen from heterocyclic triisocyanates, aliphatic or cyclic diisocyanates whose hydrocarbon chain, optionally substituted by a heteroatom, comprises from 2 to 40 atoms carbons, and mixtures thereof.   7. Nail polish according to one of the preceding claims, characterized in that the polyisocyanate is chosen from: - aliphatic diisocyanates whose hydrocarbon chain comprises from 3 to 20 carbon atoms, - diisocyanates whose hydrocarbon chain comprises at least one aromatic or non-aromatic cyclic group and comprising from 3 to 40 carbon atoms, heterocyclic trimers, and mixtures thereof.   8. Nail polish according to one of the preceding claims, characterized in that the polyisocyanate is selected from: - methylene diisocyanate, trimethylene diisocyanate, tretramethylene diisocyanate, hexamethylene diisocyanate, dipropyl ether diisocyanate, thiodipropyl diisocyanate, N, N'-dipropyl ether diisocyanate, thiodipropyl diisocyanate, cyclohexyl-1,4-diisocyanate, dicyclohexylmethane-4,4'-diisocyanate, 1,5-dimethyl-2,4-bis- (isocyanatoethyl) benzene, 1,5-dimethyl-2,4-bis (isocyanatoethyl) benzene, 1,3,5-trimethyl-2,4-bis (isocyanatomethyl) benzene, dicyclohexyldimethylmethane-4,4'-toluene diisocyanate, 2,6-toluene diisocyanates, diphenylmethane-4,4'diisocyanate, - isocyanurate of formula: OIIC OCNùRuN ~ NùRùNCO C ~ C ~ O 1 RùNCO resulting from the trimerization of 3 molecules of aliphatic diisocyanates OCNR-CNO where R is a linear, branched or cyclic hydrocarbon radical having from 2 to 30 atoms of carbon, and mixtures thereof.   9. Nail polish according to one of the preceding claims, characterized in that the primary amine is selected from monoamines or polyamines.   10. Nail polish according to one of the preceding claims, characterized in that the primary amine is chosen from monoamines or polyamines having a linear or branched hydrocarbon chain, aliphatic or cyclic comprising from 1 to 55 carbon atoms preferably 1 to 24 carbon atoms and more preferably 1 to 12 carbon atoms. 5   11. Nail polish according to the preceding claim, characterized in that the hydrocarbon chain of the primary amine comprises at least one ether group and / or a hydroxyl radical.   12. Nail polish according to one of the preceding claims, characterized in that the primary amine is selected from benzylamine, ethylamine, n-propylamine, sec. propylamine, n-butylamine, sec-butylamine, tert-butylamine, n-pentylamine, α-methylbutylamine, α-ethylpropylamine, hexylamine, octylamine, decylamine, stearylamine, cyclohexylamine , aniline, hexamethylene diamine, ethanolamine, 6-aminohexanol, p-methoxybenzylamine, methoxypropylamine, 3,4-dimethoxyphenylethylamine, 2,5-dimethoxyaniline, furfurylamine, tetrahydrofurfurylamine, bis- (3-aminopropyl) -polytetrahydrofuran and mixtures thereof.   13. Nail polish according to one of the preceding claims, characterized in that the primary amine is selected from cyclic primary monoamines, especially aromatic comprising 1 to 12 carbon atoms.   14. Nail polish according to one of the preceding claims, characterized in that the primary amine is benzylamine.   15. Nail polish according to one of the preceding claims, characterized in that the compound resulting from the reaction of at least one polyisocyanate and at least one primary amine is present in a content ranging from 0.1 to 20% by weight relative to the total weight of the composition, preferably from 0.5 to 10% by weight. 30   16. Nail polish according to one of the preceding claims, characterized in that the compound resulting from the reaction of at least one polyisocyanate and at least one primary amine is present in a content of at least 60% by weight relative to the total weight of the gelling agents present in the composition, preferably at least 60% by weight, more preferably at least 70% by weight, more preferably at least 80% by weight and preferably at least 90% by weight. weight. 25 2907337 18   17. Nail polish according to one of the preceding claims, characterized in that the organic solvent medium comprises at least one organic solvent selected from short-chain esters having from 3 to 8 carbon atoms in total, such as acetate methyl acetate, propyl acetate, isopropyl acetate, n-butyl acetate, isopentyl acetate, methoxypropyl acetate, lactate, butyl and mixtures thereof.   18. Nail polish according to any one of the preceding claims, characterized in that the organic solvent medium is from 10 to 95% by weight, relative to the total weight of the composition, preferably from 15% to 80% by weight. weight, and more preferably from 20 to 70% by weight.   19. Nail polish according to any one of the preceding claims, characterized in that the cellulosic polymers are selected from nitrocellulose, cellulose esters, alkylcelluloses and mixtures thereof.   20. Nail polish according to any one of the preceding claims, characterized in that the cellulosic polymer is present in the composition according to the invention in a dry matter content ranging from 0.1% to 40% by weight, by 20% by weight. relative to the total weight of the composition, preferably from 0.5% to 30% by weight, and more preferably from 1% to 20% by weight.   21. Nail polish according to any one of the preceding claims, characterized in that it comprises at least one auxiliary film-forming agent and / or an additional gelling agent.   22. Nail polish according to any one of the preceding claims, characterized in that it comprises at least one dyestuff. 30   23. Nail polish according to claim 22, characterized in that the dyestuff is present in a content ranging from 0.01% to 50% by weight, relative to the weight of the composition, preferably from 0.01% to 30% by weight.   24. A cosmetic nail makeup or non-therapeutic care method comprising applying to the nails at least one layer of a nail polish composition according to one of claims 1 to 23. 2907337 19   25. Use of a nail polish composition according to one of claims 1 to 23 to obtain, after deposit on the nail, a glossy film and good performance.   26. Use in a nail polish composition comprising an organic solvent medium, at least one film-forming polymer selected from cellulosic polymers and at least one gelling agent comprising a compound derived from the reaction of at least one polyisocyanate and one or more at least one primary amine, as majority gelling agent in said varnish, to obtain good stability and good homogeneity of the color over time, as well as the formation of a film on glossy and good nails; outfit.