FR3143363A1 - NAIL COMPOSITION CONTAINING A DISPERSION OF ACRYLIC POLYMER PARTICLES - Google Patents

Abstract

COMPOSITION FOR NAILS CONTAINING A DISPERSION OF ACRYLIC POLYMER PARTICLES Composition for nails comprising a base composition and a dispersion of acrylic polymer particles. The acrylic polymer particle dispersion is a dispersion of C1-C4 alkyl (meth)acrylate polymer particles stabilized with a stabilizer in a hydrocarbon oil, where the stabilizer is selected from the group consisting of: homopolymers of (meth) ) isobornyl acrylate and random copolymers of isobornyl (meth) acrylate and C1-C4 alkyl (meth) acrylate. The nail composition does not include UV curable material. Figure for the abstract: none

Description

NAIL COMPOSITION CONTAINING A DISPERSION OF ACRYLIC POLYMER PARTICLES

The present invention relates to nail compositions comprising a dispersion of acrylic polymer particles and a base composition.

BACKGROUND OF THE INVENTION

Nail compositions may consist of a protective base for adhesion to the nails, one or more colored coatings to enhance the color and a layer of varnish protector for shine. A nail composition set is therefore a system that generally contains a combination of protective base coats, colored coating and/or polish protectant. Over time, nail compositions applied to the nails lose their shine and begin to flake. These properties are manifested anywhere between the same day of application of the nail composition and 2 to 20 days afterwards. The user must then remove the nail composition and reapply it, which can take time.

It would be desirable to have a nail composition which has one or more of the following properties (preferably, all of the following properties): good wear and good shine, without modifying the hardness of the nail composition.

The present invention relates to a nail composition comprising a dispersion of acrylic polymer particles and a base composition.

The present invention also relates to a nail composition set comprising (1) a color coating composition; and (2) a varnish protectant composition comprising a dispersion of acrylic polymer particles and a base composition.

The present invention also relates to a nail composition set comprising (1) a color coating composition comprising a dispersion of acrylic polymer particles and a base composition; and (2) a varnish protectant composition.

The present invention also relates to a nail composition set comprising (1) a color coating composition comprising a dispersion of acrylic polymer particles and a base composition; and (2) a color varnish protectant composition comprising a dispersion of acrylic polymer particles and a base composition.

The present invention further relates to methods of making up and/or protecting nails comprising applying to the nails a nail composition comprising a dispersion of acrylic polymer particles and a base composition.

The present invention further relates to methods of making up and/or protecting nails comprising applying to the nails a set of nail composition comprising (1) a colored coating composition; and (2) a varnish protectant composition comprising a dispersion of acrylic polymer particles and a base composition.

The present invention further relates to methods of making up and/or protecting nails comprising applying to the nails a set of nail composition comprising (1) a colored coating composition comprising a dispersion of acrylic polymer particles and a basic composition; and (2) a varnish protectant composition.

The present invention further relates to methods of making up and/or protecting nails comprising applying to the nails a set of nail composition comprising (1) a colored coating composition comprising a dispersion of acrylic polymer particles and a basic composition; and (2) a color varnish protectant composition comprising a dispersion of acrylic polymer particles and a base composition.

The present invention also relates to methods of improving the wear and shine of a nail composition comprising the addition of a dispersion of acrylic polymer particles and a base composition wherein the addition of dispersing acrylic polymer particles and the base composition results in a nail composition having improved wear and shine properties.

It should be understood that both the foregoing general description and the following detailed description are provided by way of example and explanation only, and do not limit the invention.

DETAILED DESCRIPTION

In the following description of the invention and the claims annexed thereto, it is to be understood that the terms used have their ordinary and usual meanings in the art, unless otherwise stated.

“About” or “approximately” in this document means to within 10% of the number stated (for example, “approximately 10%” means 9% to 11% and “approximately 2%” means 1.8% to 2.2 %).

“A” or “an” in this document means “at least one”

In this document, all proposed ranges are intended to include each specific range within the given ranges, and all combinations of subranges in between. So, a range of 1 to 5 specifically includes 1, 2, 3, 4, and 5, as well as subranges 2 to 5, 3 to 5, 2 to 3, 2 to 4, 1 to 4, etc.

“Adhesion” in this document means the chemical and/or physical bond between a coating and a substrate. Good adhesion between the nail polish and the nail surface should translate into good wear properties for consumers.

“Adhesive agent” or “adhesive” means a substance that improves the chemical and/or physical bond between a coating and a substrate. In the present invention, the adhesive agent improves the bond between the compositions and the surface of the nail or other compositions.

"Film former", "film-forming polymer" or "film-forming agent" as used herein means a polymer or resin which leaves a film on the substrate to which it or she is applied, for example, after a solvent accompanying the The film-forming agent has evaporated.

"Free" or "free" as used herein means that although it is preferable that no amount of the specific component be present in the composition, it is possible that there may be very small amounts of it in the composition. the compositions of the invention provided that these quantities do not materially affect at least one, preferably most, of the advantageous properties of the compositions of the invention. So, for example, "solvent free" means that non-aqueous solvents are preferentially omitted (i.e., 0% by weight), but may be present in the composition in an amount less than about 0.25%. by weight, typically less than about 0.1% by weight, typically less than about 0.05% by weight, relative to the total weight of the composition.

"Water-free", "anhydrous" or "water-free" means herein that water is preferentially omitted (i.e. 0% by weight), but may be present in the composition at a amount less than about 0.25% by weight, typically less than about 0.1% by weight, typically less than about 0.05% by weight, relative to the total weight of the composition.

“Makeup Result” in this document means compositions where the color remains the same or substantially the same as at the time of application, as seen with the naked eye, after an extended period of time. The “Makeup Result” may be evaluated by evaluating long-wearing properties using any method known in the art for evaluating such properties. For example, long wear may be evaluated by a test involving the application of a composition to the nails and evaluating the color of the composition after an extended period of time. For example, the color of a composition can be evaluated immediately after application to nails and these characteristics can then be re-evaluated and compared after a certain time. Additionally, these characteristics can be evaluated relative to other compositions, such as commercially available compositions.

The term “Makeup” as used herein means providing decoration (e.g., color) to the nail.

“Protect” in this document means to prevent damage to the nail (e.g., chipping) by providing a protective layer over the nail.

“Nail”, “fingernail” or “toenail” refers to a human keratinous substrate on a finger or toe that may be treated (decorated) with a single or multiple cosmetic nail compositions.

“Nail treatment system” or “nail composition kit” means multiple compositions applied to the surface of the nails.

“Nail composition” or “lacquer” or “varnish” or “lacquer varnish” or “nail film” means lacquer varnish usable as a protective base, colored coating, varnish protector, transparent varnish and protective coating applied to the nails separately and/or as a combined application of the above.

“Substituted” in this document means comprising at least one substituent. Non-limiting examples of substituents for substitution include atoms, such as oxygen atoms and nitrogen atoms, as well as functional groups, such as hydroxyl groups, ether groups, alkoxy groups, acyloxyalkyl groups , oxyalkylene groups, polyoxyalkylene groups, carboxylic acid groups, amine groups, acylamino groups, amide groups, halogen-containing groups, ester groups, thiol groups, sulfonate groups, thiosulfate groups, siloxane groups and polysiloxane groups. The substituent(s) may be further substituted.

The compositions and methods of the present invention may comprise, consist of, or consist essentially of the essential elements and limitations of the invention described herein, as well as any additional or optional ingredients, components, or limitations described herein. this document or otherwise useful.

Reference is made herein to brand names of materials including, but not limited to, polymers and optional components. In this document, the inventors do not intend to limit themselves to the materials described and referenced by a certain brand name. Equivalent materials (for example, those obtained from a different source under a different name or catalog (reference) number) to those referenced by a brand name may be substituted and used in the processes described and claimed herein.

All percentages and ratios are calculated by weight unless otherwise noted. All percentages are calculated based on the total weight of a composition unless otherwise stated. All component or composition levels refer to the active level of that component or composition, and exclude impurities, for example, residual solvents or derivative products, which may be present in commercially available sources.

Acrylic polymer particle dispersion

According to the present invention, nail compositions containing a dispersion of acrylic polymer particles are provided. According to the present invention, the acrylic polymer particle dispersions are dispersions of C1-C4 alkyl (meth)acrylate polymer particles stabilized with isobornyl (meth)acrylate polymer stabilizers in an oil. based on hydrocarbons. Certain dispersions of acrylic polymer particles have been previously disclosed in PCT Patent Application Serial No. PCT/EP2014/07800 and US Patent Application Nos. US20170172883A1 and US20170172890A1, the entire contents of each of which are incorporated by reference.

According to preferred embodiments, the polymer of the particles is a C1-C4 alkyl (meth)acrylate polymer. The C1-C4 alkyl (meth)acrylate monomers can be chosen from methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, (meth)acrylate isopropyl, n-butyl (meth)acrylate and tert-butyl (meth)acrylate. Preferably, the monomer is a C1-C4 alkyl acrylate monomer. Preferably, the polymer of the particles is a polymer of methyl acrylate and/or ethyl acrylate.

The polymer of the particles may also comprise an ethylenically unsaturated acid monomer or its anhydride, preferably chosen from ethylenically unsaturated acid monomers comprising at least one carboxylic, phosphoric or sulfonic acid function, such as, for example, crotonic acid. , itaconic acid, fumaric acid, maleic acid, maleic anhydride, styrenesulfonic acid, vinylbenzoic acid, vinylphosphoric acid, acrylic acid, methacrylic acid, acrylamidopropanesulfonic acid or acrylamidoglycolic acid, and/or their salts. Preferably, the ethylenically unsaturated acid monomer is chosen from (meth)acrylic acid, maleic acid and maleic anhydride. Most preferably, the ethylenically unsaturated acid monomer is acrylic acid. The salts may preferably be chosen from alkali metal salts, for example sodium or potassium; alkaline earth metal salts, for example calcium, magnesium or strontium; metal salts, for example zinc, aluminum, manganese or copper; ammonium salts of formula NH4+; quaternary ammonium salts; salts of organic amines, for example salts of methylamine, dimethylamine, trimethylamine, triethylamine, ethylamine, 2-hydroxyethylamine, bis(2-hydroxyethyl)amine or tris(2-hydroxyethyl)amine; lysine or arginine salts.

The polymer of the particles may thus comprise or consist essentially of 80% to 100%, preferably 85% to 95%, or approximately 90% by weight of C1-C4 alkyl (meth)acrylate and 0 to 20%, preferably from 5% to 15% or approximately 10% by weight of ethylenically unsaturated acid monomer, relative to the total weight of the polymer.

According to preferred embodiments, the polymer consists essentially of a polymer of one or more C1-C4 alkyl (meth)acrylate monomers.

According to preferred embodiments, the polymer consists essentially of a copolymer of methyl and ethyl acrylate. In the copolymer, the ethyl acrylate is 50 to 95% by weight and the methyl acrylate is 5 to 50% by weight, including all intermediate ranges and subranges.

The polymer of the particles can be chosen from, for example: methyl acrylate homopolymers; ethyl acrylate homopolymers; methyl acrylate/ethyl acrylate copolymers; methyl acrylate/ethyl acrylate/acrylic acid copolymers; methyl acrylate/ethyl acrylate/maleic anhydride copolymers; methyl acrylate/acrylic acid copolymers; ethyl acrylate/acrylic acid copolymers; methyl acrylate/maleic anhydride copolymers; and ethyl acrylate/maleic anhydride copolymers.

Preferably, the polymer of the particles is a non-crosslinked polymer.

The polymer of the particles of the dispersion preferably has a number average molecular weight ranging from about 2000 to about 10,000,000, preferably ranging from about 150,000 to 500,000, including all intermediate ranges and subranges.

The polymer of the particles is preferably present in the dispersion in a content ranging from approximately 21% to approximately 58.5% by weight, preferably ranging from approximately 36% to approximately 42% by weight, relative to the total weight of the dispersion. , including all intermediate ranges and subranges.

The stabilizer is preferably a polymer of isobornyl (meth)acrylate chosen from a homopolymer of isobornyl (meth)acrylate and random copolymers of isobornyl (meth)acrylate and of C1-alkyl (meth)acrylate. C4 present in a weight ratio of isobornyl (meth)acrylate/C1-C4 alkyl (meth)acrylate greater than 4. Preferably, the weight ratio ranges from approximately 4.5 to approximately 19, including all intermediate ranges and sub-ranges.

Preferably, the stabilizer is chosen from, for example: isobornyl acrylate homopolymers; isobornyl acrylate/methyl acrylate random copolymers; isobornyl acrylate/methyl acrylate/ethyl acrylate random copolymers; random copolymers of isobornyl methacrylate/methyl acrylate, in the weight ratio described above.

The stabilizing polymer preferably has a number average molecular weight ranging from about 10,000 to about 400,000, preferably from about 20,000 to about 200,000, including all intermediate ranges and subranges.

Although not wishing to be bound by any particular theory, it is believed that the stabilizer is in contact with the surface of the polymer particles and thus makes it possible to stabilize these particles on the surface in order to keep these particles in dispersion in the non-aqueous medium of the dispersion.

Preferably, the stabilizer + polymer combination of particles present in the dispersion comprises from approximately 1% to approximately 50%, preferably 20% to 40%, or approximately 30% by weight of polymerized isobornyl (meth)acrylate, and approximately 50% to approximately 90%, preferably 60% to 80%, or approximately 70% by weight of polymerized C1-C4 alkyl (meth)acrylate, relative to the total weight of the stabilizer + polymer combination of the particles.

Preferably, the stabilizer + polymer combination of the particles present in the dispersion comprises from approximately 15% to approximately 30% by weight of polymerized isobornyl (meth) acrylate, and from approximately 70% to approximately 85% by weight of (meth). ) polymerized C1-C4 alkyl acrylate, relative to the total weight of the stabilizer + polymer combination of the particles.

The oil medium of the polymer dispersion includes a hydrocarbon-based oil.

Hydrocarbon-based oil is an oil that is liquid at room temperature (25°C).

The term "hydrocarbon-based oil" means an oil formed essentially, or even consisting, of carbon and hydrogen atoms, and optionally of oxygen and nitrogen atoms, and containing no silicon atoms. or fluorine. It may contain, for example, alcohol, ester, ether, carboxylic acid, amine and/or amide groups.

The hydrocarbon-based oil can be chosen from, for example: hydrocarbon-based oils containing 8 to 14 carbon atoms, preferably: branched C8-C14 alkanes, for example C8-C14 isoalkanes of petroleum origin (also known as isoparaffins), e.g. isododecane (also known as 2,2,4,4,6-pentamethylheptane), isodecane and e.g. oils sold under the trade name Isopar or Permethyl, linear alkanes, for example n-dodecane (C12) and n-tetradecane (C14) sold by Sasol under the respective references Parafol 12-97 and Parafol 14-97, as well as their mixtures, the undecane-tridecane mixture, the mixtures of n-undecane (C11) and n-tridecane (C13) obtained in examples 1 and 2 of patent application WO 2008/155 059 from the company Cognis, the disclosure of which is incorporated herein by reference, and mixtures thereof, short-chain esters (containing 3 to 8 carbon atoms in total) such as ethyl acetate, methyl acetate, propyl acetate or n-butyl acetate, hydrocarbon-based oils of plant origin such as triglycerides consisting of fatty acid esters of glycerol, the fatty acids of which may have chain lengths varying from C4 to C24 , these chains can be linear or branched, and saturated or unsaturated; these oils are in particular triglycerides of heptanoic or octanoic acid, or as a variant of wheat germ oil, sunflower oil, grape seed oil, sesame oil, corn oil, apricot oil, castor oil, shea oil, avocado oil, olive oil, soybean oil, sweet almond oil, palm oil, rapeseed oil, cottonseed oil, hazelnut oil, macadamia oil, jojoba oil, alfalfa oil, poppy oil, pumpkin oil, pumpkin seed oil, blackcurrant oil, evening primrose oil, millet oil, barley oil, quinoa oil, rye oil, safflower oil, cornflower oil bancoul, passionflower oil, rosehip oil; shea butter; or even caprylic/capric acid triglycerides, for example those sold by the company Stéarineris Dubois or those sold under the names Migloyl 810®, 812® and 818® by the company Dynamyt Nobel, synthetic ethers containing 10 to 40 atoms of carbon ; linear or branched hydrocarbons of mineral or synthetic origin, such as petroleum jelly, polydecenes, hydrogenated polyisobutene such as Parleam®, squalane and liquid paraffins, and their mixtures, synthetic esters such as oils of formula R1COOR2 in in which R1 represents a linear or branched fatty acid residue containing from 1 to 40 carbon atoms and R2 represents a chain based on hydrocarbons, in particular, branched containing from 1 to 40 carbon atoms, provided that R1+R2 ≧10, e.g. purcellin oil (cetostearyl octanoate), isopropyl myristate, isopropyl palmitate, C12-C15 alkyl benzoates, hexyl laurate, diisopropyl adipate, isononyl isononanoate, 2 palmitate -ethylhexyl, isostearyl isostearate, 2-hexyldecyl laurate, 2-octyldecyl palmitate, 2-octyldodecyl myristate, alkyl or polyalkyl heptanoates, octanoates, decanoates or ricinoleates such as propylenyl glycol dioctanoate; hydroxylated esters such as isostearyl lactate, diisostearyl malate and 2-octyldodecyl lactate; polyol esters and pentaerythritol esters, fatty alcohols which are liquid at room temperature, with a branched and/or unsaturated carbon-based chain containing 12 to 26 carbon atoms, for example octyldodecanol, isostearyl alcohol, oleyl alcohol, 2 -hexyldecanol, 2-butyloctanol and 2-undecylpentadecanol.

Preferably, the hydrocarbon-based oil is non-polar (formed only of carbon and hydrogen atoms).

The hydrocarbon-based oil is preferably chosen from hydrocarbon-based oils containing 8 to 14 carbon atoms, in particular the non-polar oils described above. Preferably, the hydrocarbon-based oil is isododecane.

The polymer particles of the dispersion preferably have an average size, in particular a number average size, ranging from approximately 50 to approximately 500 nm, preferably ranging from approximately 75 to approximately 400 nm, and preferably ranging from approximately 100 to approximately 250 nm, including all intermediate ranges and subranges.

In general, the dispersion according to the invention can be prepared in the following manner, which is given by way of example.

The polymerization can be carried out in dispersion, that is to say by precipitation of the polymer during formation, with protection of the particles formed by a stabilizer. In a first step, the stabilizing polymer is prepared by mixing the constituent monomer(s) of the stabilizing polymer, with a radical initiator, in a solvent known as a synthesis solvent, and by polymerizing these monomers. In a second step, the constituent monomer(s) of the polymer of the particles are added to the stabilizing polymer formed and the polymerization of these added monomers is carried out in the presence of the radical initiator.

When the non-aqueous medium is an oil based on non-volatile hydrocarbons, the polymerization can be carried out in a non-polar organic solvent (synthesis solvent), followed by the addition of the oil based on non-volatile hydrocarbons ( which must be miscible with said synthesis solvent) and the selective distillation of the synthesis solvent. A synthesis solvent which is such that the monomers of the stabilizing polymer and the free radical initiator are soluble therein, and the resulting polymer particles are insoluble therein, so that they precipitate therein during their formation, is therefore chosen. In particular, the synthesis solvent can be chosen from alkanes such as heptane or cyclohexane.

When the non-aqueous medium is an oil based on volatile hydrocarbons, the polymerization can be carried out directly in the oil, which therefore also acts as a synthesis solvent. The monomers must also be soluble there, just like the free radical initiator, and the polymer of the particles obtained must be insoluble there.

The monomers are preferentially present in the synthesis solvent, before polymerization, in a proportion of approximately 5 to approximately 20% by weight. The entire amount of monomers may be present in the solvent before the reaction begins, or a portion of the monomers may be added gradually as the polymerization reaction proceeds. The free radical initiator is preferably azobisisobutyronitrile or tert-butyl peroxy-2-ethylhexanoate.

The polymerization can be carried out at a temperature ranging from approximately 70 to approximately 110° C.

The polymer particles are stabilized on the surface, when they form during polymerization, by means of the stabilizer.

Stabilization can be carried out by any known means, and in particular by direct addition of the stabilizer, during polymerization. The stabilizer is preferably also present in the mixture before polymerization of the monomers of the polymer of the particles. However, it is also possible to add it continuously, especially when the particle polymer monomers are also added continuously.

From approximately 10% to approximately 30% by weight, preferably from approximately 15% to approximately 25% by weight of stabilizer can be used, relative to the total weight of the monomers used (stabilizer + polymer of the particles).

The dispersion of polymer particles preferably comprises from approximately 30% to approximately 65% by weight, preferably from approximately 40% to approximately 60% by weight of dry materials, relative to the total weight of the dispersion.

Preferably, the oily dispersion may comprise a plasticizer, for example, a plasticizer chosen from tri-n-butyl citrate, tripropylene glycol monomethyl ether (INCI name: PPG-3 methyl ether) and trimethyl pentaphenyl trisiloxane (sold under the name name of Dow Corning PH-1555 HRI Cosmetic Fluid by the Dow Corning company). These plasticizers improve the mechanical resistance of the polymer film. The plasticizer, if present, may be present in the oil dispersion in an amount ranging from about 5% to about 50% by weight, based on the total polymer weight of the particles.

According to preferred embodiments, the polymer of the particles is a C1-C4 alkyl (meth)acrylate polymer; the stabilizer is a polymer of isobornyl (meth)acrylate chosen from a homopolymer of isobornyl (meth)acrylate and random copolymers of isobornyl (meth)acrylate and of C1-C4 alkyl (meth)acrylate present in a weight ratio of isobornyl (meth)acrylate/C1-C4 alkyl (meth)acrylate greater than 4. For these statistical stabilizing copolymers, the defined weight ratio makes it possible to obtain a polymer dispersion which is stable, particularly after storage for seven days at room temperature (25°C).

The dispersions according to the invention consist of particles, which are generally spherical, of at least one surface-stabilized polymer, in a non-aqueous medium.

Preferably, the quantity of the dispersion of acrylic polymer particles present in the nail compositions of the present invention ranges from approximately 0.01% to approximately 20% by weight relative to the total weight of the composition, preferably approximately 0 .5% to approximately 10% by weight relative to the total weight of the composition, preferably from approximately 1% to approximately 3% by weight relative to the total weight of the composition, including all intermediate ranges and subranges.

Basic composition for nail composition

According to preferred embodiments, the base composition for the nail compositions of the present invention is a solvent-based composition. Shown below are examples of ingredients that may be found in the nail compositions of the present invention, although not all identified ingredients need to be present.

Film-forming polymer

According to preferred embodiments, the nail compositions of the present invention comprise at least one non-photocurable film-forming polymer. “Film-forming polymer” designates a non-photocurable polymer capable of forming alone (that is to say in the absence of an auxiliary film-forming agent or an external stimulus such as UV rays for example), a film capable of be isolated, in particular a continuous adhesive film, on a support, in particular on the nails. Preferably, the film-forming polymer is chosen from the group consisting of synthetic polymers of radical or polycondensate type, polymers of natural origin and their mixtures.

Specific examples of suitable film-forming polymers include, but are not limited to, polysaccharide derivatives, such as cellulose or guar gum derivatives, including nitrocellulose and/or a polysaccharide ester or an alkyl ether such as polysaccharide consisting of repeated units comprising at least two identical or different cycles and having a degree of substitution per saccharide unit between 1.9 and 3, preferably between 2.2 and 2.9, and preferably between 2.4 and 2.8 , such as cellulose esters (such as cellulose acetobutyrates or cellulose acetopropionates), cellulose alkyl ethers (such as ethylcelluloses) and ethylguars. Specific examples of suitable film-forming polymers also include, but are not limited to, alkyd resins, organic polymer-silicone hybrid compounds, polyurethanes, polyvinyl butyrals and ketone/aldehyde resins, resins from condensation products of aldehyde, such as aryl sulfonamide formaldehyde resins such as toluene-sulfonamide formaldehyde resin, aryl-sulfonamide epoxy resins or ethyl tosylamide resins.

Preferably, if present, the at least one film-forming polymer is at least one alkyd resin. Preferably, the at least one alkyd resin is a polyester comprising hydrocarbon chains of fatty acids. These resins are described in particular in the Kirk-Othmer Encyclopedia of Chemical Technology, 4th edition, volume 2, pages 53 to 63, the content of which is incorporated into this document by reference. These resins can be obtained by polymerization of polyols and polyacids or their corresponding anhydride in the presence of fatty acids, where the fatty acids can be used "as is" or in the form of triglycerides of fatty acids or under the form of oils during alkyd resin synthesis. Due to the presence of fatty acid hydrocarbon chains in the alkyd resin, alkyd resins are generally defined by their oil length. Accordingly, “oil length of an alkyd resin” is intended to mean the percentage by weight of fatty acid hydrocarbon chains present in the alkyd resin.

Examples of suitable polyols which may be used in the synthesis of alkyd resins include, but are not limited to, at least one of erythritol, trimethylolpropane, trimethylolethane, neopentyl glycol, propylene glycol, ethylene glycol, 1,6-hexanediol, 1, 4-butanediol, diethylene glycol and, in particular, glycerol.

Examples of a suitable polyacid or anhydride that may be used in the synthesis of alkyd resins include, but are not limited to, at least one of isophthalic acid, terephthalic acid, trimellitic anhydride, maleic anhydride, adipic acid, acid fumaric acid, azelaic acid, sebacic acid and, in particular, phthalic anhydride.

Examples of suitable fatty acids which may be used in the synthesis of alkyd resins include, but are not limited to, at least one of the fatty acids corresponding to the formula R—COOH, wherein R denotes a saturated or unsaturated hydrocarbon radical having preferably from 7 to 45 carbon atoms, preferably from 9 to 35 carbon atoms, preferably from 15 to 35 carbon atoms and preferably from 15 to 21 carbon atoms. We can cite, for example, palmitic acid, stearic acid, oleic acid, ricinoleic acid, linoleic acid, linolenic acid and, in particular, capric acid.

Fatty acids are present in the majority of oils of natural origin, particularly in the form of triglycerides. Fatty acid triglycerides are esters resulting from the reaction of the three glycerol alcohol functional groups with fatty acids, these fatty acids may be the same or different. Oils of natural origin can therefore be used during polymerization. They can be chosen, for example, from linseed oil, Chinese wood oil, oitïcica oil, soybean oil, sunflower oil, safflower oil, castor oil, coconut oil, coconut oil. olive, palm oil, rapeseed oil, peanut oil and tall oil.

Specific examples of acceptable alkyd resins include, but are not limited to, at least one of those sold under the names "Beckosol ODE 230 70E" by Dainippon Ink & Chem (phthalic anhydride/glycerol/glyceryl decanoate copolymer in 70% ethyl acetate), “Necowel 581®” (50% in soybean oil), “Necowel 585®” (20% in sunflower oil), “Necowel 580®” (20 % in sunflower oil), “Necowel 586 N®” (50% in soybean oil), “Necowel EP 1161®” (50% in soybean oil), “Necowel EP 1213®” ( 20% in oil), “Necowel EP 2009®” (32% in sunflower oil), “Necowel EP 2019®” (20% in oil), “Necowel EP 2275®” (35% in oil), “Necowel EP 2329®” (34% in oil) and “Necowel EP 3016®” (30% in oil) by Ashland or “Uradil XP 515 AZ®” (73% in oil) tall oil) or “Uradil XP 516 AZ®” (63% in tall oil) by DSM resins. Beckosol ODE 230 70E (phthalic anhydride/glycerol/glycidyl decanoate copolymer in 70% ethyl acetate) is particularly preferred.

Preferably, if present, the at least one film-forming polymer is present in the nail composition of the present invention in quantities of active material generally ranging from approximately 2% to approximately 60%, preferably from approximately 5% to approximately 60%. approximately 50%, and more preferably from approximately 8% to approximately 45%, by weight, relative to the total weight of the composition, including all intermediate ranges and subranges.

Solvent

According to preferred embodiments, nail compositions additionally optionally comprising at least one solvent are provided. Any solvent generally present in nail polish compositions can be used. Other suitable solvents include, but are not limited to, organic solvents which are liquid at room temperature. Examples of suitable solvents include, but are not limited to, ketones such as methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, isophorone, cyclohexanone or acetone; alcohols, such as ethanol, isopropanol, diacetone alcohol, 2-butoxyethanol or cyclohexanol; glycols, such as ethylene glycol, propylene glycol, pentylene glycol or glycerol; propylene glycol ethers, such as propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate or dipropylene glycol mono(n-butyl) ether; short-chain esters (having a total of 2 to 7 carbon atoms), such as ethyl acetate, methyl acetate, propyl acetate, n-butyl acetate or isopentyl acetate; alkanes, such as decane, heptane, dodecane or cyclohexane, and mixtures thereof. Short chain esters (having a total of 2 to 8 carbon atoms) are most preferred.

Preferably, the solvent is present in the nail composition of the present invention in quantities of active material generally ranging from about 0.1% to about 90%, preferably from about 5% to about 60%, and more preferably d about 15% to about 40%, by weight, based on the total weight of the composition, including all intermediate ranges and subranges.

In a preferred embodiment, the solvent is not water and the nail composition is water-free or anhydrous.

Dye

According to preferred embodiments, nail compositions further comprising at least one colorant are provided. Any colorant typically found in nail polish compositions may be used. Suitable colorants include, but are not limited to, lipophilic dyes, pigments, pearlescent agents, glitter powder and mixtures thereof.

Suitable examples of fat-soluble dyes are, for example, Sudan Red, DC Red 17, DC Green 6, β-carotene, soybean oil, Sudan Brown, DC Yellow 11, DC Violet 2, DC Orange 5 and quinoline yellow.

Suitable pigments may be white or colored, inorganic and/or organic and coated or uncoated. Mention may be made, for example, of inorganic pigments such as titanium dioxide, optionally surface-treated, zirconium or cerium oxides and iron or chromium oxides, manganese violet, ultramarine blue, hydrate chrome and ferric blue. We can also cite, among the organic pigments, carbon black, type D & C pigments and lacquers based on cochineal carmine or barium, strontium, calcium or aluminum, such as D&C Red n° 10, 11 , 12 and 13, D&C Red No. 7, D&C Red No. 5 and 6, and D&D Red No. 34, as well as lacquers such as D&C Yellow Lake No. 5 and D&C Red Lake No. 2.

Suitable pearl pigments may be chosen, for example, from white pearl pigments, such as mica coated with titanium oxide or bismuth oxychloride, colored pearl pigments, such as mica coated with titanium oxide or iron oxides, mica coated with titanium oxide with in particular ferric blue or chromium oxide, or mica coated with titanium oxide with an organic pigment of the aforementioned type, and pearl pigments based of bismuth oxychloride.

Preferably, if present, the at least one dye is present in the nail composition of the present invention in quantities of active material generally ranging from approximately 0.1% to approximately 10%, preferably approximately 0. 25% to approximately 7%, and more preferably from approximately 0.5% to approximately 3.5%, by weight, relative to the total weight of the nail composition, including all intermediate ranges and sub-ranges Auxiliaries/ Additives.

The nail compositions of the present invention may further comprise an additive or auxiliary commonly used in cosmetic compositions and known to those skilled in the art as being suitable for incorporation into a nail varnish or varnish composition. These additives or auxiliaries can be chosen from plasticizers, thickeners, preservatives, perfumes, oils, waxes, surfactants, antioxidants, agents for fighting free radicals, spreading agents, wetting agents, dispersing agents, antifoaming agents, neutralizing agents, stabilizing agents, active ingredients selected from essential oils, UV protection agents, sunscreens, moisturizing agents, vitamins, proteins, ceramides, plant extracts, fibers and the like, and mixtures thereof.

In a preferred embodiment, there are no UV curing agents in the nail composition. A UV curing agent includes photocrosslinkable compounds and photoinitiators. The nail composition cures over time without any UV curing agents cured by UV light. The nail composition cures by evaporation of the solvent in an ambient atmosphere in less than 2 hours.

A person skilled in the art will take care to select the optional additional additives and/or their quantity so that the advantageous properties of the composition according to the invention are not, or not significantly, compromised by the envisaged addition.

These substances can be selected in various ways by those skilled in the art in order to prepare a composition which has the desired properties, for example, consistency or texture.

These additives may be present in the composition in a proportion of 0% to 99% (such as 0.01% to 90%) relative to the total weight of the composition and further such as 0.1% to 50%. by weight (if present), including all intermediate ranges and subranges.

It goes without saying that the composition of the invention must be cosmetically or dermatologically acceptable, that is to say it must contain a physiologically acceptable non-toxic support. The composition can be in any dosage form normally used in the cosmetic and dermatological fields which is suitable for topical administration to the nails.

Nail composition set

According to the present invention, a nail composition set comprising at least one colored coating and at least one varnish protector is provided. The nail composition set of the present invention may further optionally comprise at least one primer base and/or at least one protective base.

It should be understood that each base or layer of the nail composition set, itself, may include one or more layers of each composition. Thus, the at least one primer may comprise one or more layers of primer; the at least one protective base may comprise one or more protective base layers; the at least one colored coating may comprise one or more layers of colored coating; and the at least one varnish protector may comprise one or more layers of varnish protector. Preferably, each primer, protective base, colored coating and varnish protector contains three layers or compositions or less, more preferably two layers or compositions or less, and most preferably a single layer or composition.

According to the present invention, the nail composition set is a nail composition comprising a dispersion of acrylic polymer particles according to the present invention. The other composition(s) of the nail composition set may be any composition suitable for application to the nails. The polish protectant and/or color coating of the nail composition set may comprise a dispersion of acrylic polymer particles.

The present invention also relates to methods of improving the wear and shine of a nail composition comprising the addition of a dispersion of acrylic polymer particles and a base composition wherein the addition of dispersing acrylic polymer particles and the base composition results in a nail composition having improved wear and shine properties. Wear and shine properties are improved compared to a composition that does not include a dispersion of acrylic polymer particles.

“Brilliance” or “Gloss” in the compositions of this document designates compositions having an average gloss, measured at 20°, greater than or equal to 35, for example 40, preferably 45, 55, 60, 65, 70, 75, 80 , 85 or 90°, including all intermediate ranges and subranges. “Gloss enhancing agent” or “gloss enhancing agent” in accordance with the present invention means increasing the gloss or, where appropriate, attenuating or reducing any reduction in gloss which may result from the use of corresponding amounts of non-gloss enhancing materials. not the shine.

Improved wear reduces chipping of the nail composition after application to the nail. The components of the nail composition can improve adhesion to the nail after application and provide sufficient hardness to prevent chipping. The hardness may be between 30 and 60, preferably between 35 and 55 or between 40 and 50, including all intermediate ranges and subranges, as measured with a Persoz hardness tester.

According to such methods, preferably, the quantity of the dispersion of acrylic polymer particles added to the nail composition is generally from about 0.01% to about 20%, preferably from about 1% to about 15%, and more preferably from about 3% to about 10%, by weight, relative to the total weight of the composition, including all intermediate ranges and sub-ranges.

According to preferred embodiments of the present invention, methods of making up or protecting nails comprising applying to the nails a nail composition comprising a dispersion of acrylic polymer particles on the nails in an amount sufficient to make-up or protect nails are offered.

The compositions according to the invention can be manufactured by known processes, generally used in the cosmetic or dermatological field.

Unless otherwise stated, all numbers expressing quantities of ingredients, reaction conditions, etc. used in the specification and the claims must be understood as being modified in all cases by the term “about”. Consequently, unless otherwise indicated, the numerical parameters presented in the following specification and the appended claims are approximations which may vary depending on the desired properties which one seeks to obtain thanks to the present invention.

Although the numerical ranges and parameters exhibiting the broad scope of the invention are approximations, the numerical values presented in the specific examples are reported as accurately as possible. However, any numerical value inherently contains certain errors necessarily resulting from the standard deviation found in their respective measurements. The following examples are intended to illustrate the invention without limiting its scope accordingly. Percentages are given on a weight basis.

EXAMPLES

Measurement of nail composition properties

The gloss or shine is measured using a gloss measuring device, for example by spreading a layer of the composition to be tested, between 50 μm and 150 μm thick, on a white Leneta contrast card using an automatic spreading device. The residual sticky layer is removed with lint-free cotton saturated in an alcohol-based solvent, then the gloss is measured at 20° and 60 ^° using a Byk Gardner gloss meter from microTRI-GLOSS reference. This measurement is repeated at least three times, and the average gloss in GU (gloss units) is the average of the at least three measurements taken.

Elongation, breaking strength and Young's modulus are measured using dynamic mechanical analysis (DMA) with tensile test method. Sample prepared by coating the formula on a polypropylene (PP) plate with a film thickness between 50 μm and 150 μm. The deposited film is dried in the atmosphere for 24 hours. After drying, the test sample is cut into long strip and mounted in the tensile clamp for elongation test. The test is carried out at 37 ^° C with an elongation rate of 300% per minute. Tensile test data is shown below as an example. Young's modulus and elongation at break (strain reading at fracture) are calculated from the graph.

Preparation of dispersion of acrylic polymer particles

An example of the dispersion of acrylic polymer particles was carried out by the following method.

In a first step, 1300 g of isododecane, 337 g of isobornyl acrylate, 28 g of methyl acrylate and ethyl acrylate were placed in a reactor. The isobornyl acrylate/methyl acrylate mass ratio is. The mixture was heated to 90°C under argon with stirring. After 2 hours of reaction, 1430 g of isododecane were added to the reactor feed and the mixture was heated to 90 °C.

In a second step, a mixture of 1376 g of methyl acrylate, 1376 g of isododecane was run for more than 2 hours 30 minutes, and the mixture was allowed to react for 7 hours. 3.3 liters of isododecane were then added and part of the isododecane was evaporated to obtain a solids content of 50% by weight. A dispersion of methyl acrylate particles stabilized with a random copolymer stabilizer containing 92% isobornyl acrylate and 8% methyl acrylate in isododecane was obtained.

The dispersion contains a total (stabilizer + particles) of 80% methyl acrylate and 20% isobornyl acrylate.

The polymer particles in the dispersion have a number average size of approximately 160 nm.

The dispersion is stable after storage for 7 days at room temperature (25°C).

The polymer/oil weight ratio is 1:1 in this dispersion of polymer particles.

The weight percentage of components in the acrylic polymer particles is shown in Table 1.

[Table 1] Components by weight of acrylic polymer particles Component Monomer Weight percent Stabilizing Isobornyl acrylate 20 C1-C4 alkyl (meth)acrylate polymer particles Methyl acrylate 10 Ethyl acrylate 60 Ethylenically unsaturated acid monomer Acrylic acid, 10

Examples 1 to 5

The acrylic polymer particle dispersion was mixed with a color coating base composition to form the nail composition. The dispersion was added directly to the base composition and mixed using a stockblender. Examples 1 to 5 are examples of different concentrations (0.2%, 0.5%, 1%, 3%, 5%) of the dispersion of acrylic polymer particles added to the colored coating base composition to form nail composition. The components of the base color coating composition are shown in Table 2.

[Table 2] Components by weight of the basic composition Component Weight percent Solvent 70 Nitrocellulose 10 Tosylamide epoxy resin 8 Plasticizer 9

Here is the composition of the varnish protector: Component Weight percent Solvent 78 Nitrocellulose 10 Other film former 5 to 6 Plasticizer 9

The presence of the dispersion of acrylic polymer particles in the nail composition increases the shine while maintaining a hardness between 30 and 50, as shown in Table 3. This is probably due to the strong mechanical properties of the (meth) particles. C1-C4 alkyl acrylate, in combination with the gloss-enhancing properties of the stabilizer and the improved adhesion properties of the ethylenically unsaturated acid monomer.

[Table 3] Properties of examples 1 to 5 Dispersion concentration Example 1
0.2% Example 2
0.5% Example 3
1% Example 4
3% Example 5
5% Shine (20°) 61.5 61.1 63.1 65 68.7 Hardness 35 45 38 49 32

A colored coating was applied to a nail and allowed to dry, then the polish protectant with the added amount of acrylic polymer particle dispersion was applied to the colored coating and allowed to dry. The gloss and wear of the colored coating with the varnish protector and the dispersion of acrylic polymer particles were monitored over a period of 10 days. A comparative example of the same colored coating and varnish protectant applied but without dispersion of acrylic polymer particles was also monitored.

[Table 4] Performance of examples 1 to 5 Dispersion concentration Example 1
0.2% Example 2
0.5% Example 3
1% Example 4
3% Example 5
5% Application = = = = = Wear on day 7 = + + = = Shine on day 7 = = + + + Wear on day 10 = = + + + Shine on day 10 = = + + +

Table 4 shows the performance of the nail compositions after 10 days compared to the comparative example. An “=” symbol indicates that the nail composition has similar performance to that of the comparative example. A “+” symbol indicates that the nail composition performs better than that of the comparative example. In the case of wear, better performance means less chipping and in the case of shine, better performance means that a shine is maintained after 10 days.

Adding 0.2% of the acrylic polymer particle dispersion resulted in no difference from the comparative example, and 0.5% only improved wear for up to 7 days. Examples 3-5 with added dispersion of 1%, 3% and 5% acrylic polymer particles improved the shine and wear of the nail composition for the duration of 10 days. More than 5% of the dispersion of acrylic polymer particles in the composition causes incompatibility with the base composition. Less than 1% of the dispersion of acrylic polymer particles in the composition does not result in gloss enhancement, due to the low concentration.

Claims (10)

Composition for nails, preferably an anhydrous composition, comprising:
a basic composition; And
a dispersion of acrylic polymer particles;
in which the dispersion of acrylic polymer particles is a dispersion of C1-C4 alkyl (meth)acrylate polymer particles, preferably methyl acrylate and/or ethyl acrylate polymer particles, stabilized with a stabilizer in a hydrocarbon oil,
in which the stabilizer is chosen from the group consisting of: isobornyl (meth)acrylate homopolymers; and random copolymers of isobornyl (meth)acrylate and C1-C4 alkyl (meth)acrylate, and preferably chosen from the group consisting of isobornyl acrylate homopolymers; isobornyl acrylate/methyl acrylate random copolymers; isobornyl acrylate/methyl acrylate/ethyl acrylate random copolymers; and isobornyl acrylate/demethyl acrylate random copolymers, and
wherein the nail composition does not include UV curable material. A nail composition according to claim 1, wherein the polymer of the particles is present in the dispersion in a content ranging from 21% to 58.5% by weight relative to the total weight of the dispersion. A nail composition according to claim 1, comprising 0.01 to 20% by weight of the dispersion of acrylic polymer particles relative to the total weight of the composition. A nail composition according to claim 1, wherein the acrylic polymer particles comprise 50 to 95% by weight of ethyl acrylate and 5 to 50% by weight of methyl acrylate. Composition for nails according to claim 1, in which the acrylic polymer particles further comprise an ethylenically unsaturated acid monomer or an anhydride thereof, preferably an ethylenically unsaturated acid monomer chosen from the group consisting of crotonic acid, itaconic acid, fumaric acid, maleic acid, maleic anhydride, styrenesulfonic acid, vinylbenzoic acid, vinylphosphoric acid, acrylic acid, methacrylic acid, acrylamidopropanesulfonic acid, acrylamidoglycolic acid, and their salts A nail composition according to claim 1, wherein the acrylic polymer particles comprise 80% to 100% by weight of C1-C4 alkyl (meth)acrylate and 0 to 20% by weight of a monomer of ethylenically unsaturated acid, relative to the total weight of the acrylic polymer particles. A nail composition according to claim 1, wherein the acrylic polymer particles are at least one selected from the group consisting of: methyl acrylate homopolymers; ethyl acrylate homopolymers; methyl acrylate/ethyl acrylate copolymers; methyl acrylate/ethyl acrylate/acrylic acid copolymers; methyl acrylate/ethyl acrylate/maleic anhydride copolymers; methyl acrylate/acrylic acid copolymers; ethyl acrylate/acrylic acid copolymers; methyl acrylate/maleic anhydride copolymers; and ethyl acrylate/maleic anhydride copolymers. Nail composition according to claim 1, having a shine of 60 to 90° and/or having a hardness of 30 to 90 measured with a Persoz hardness test. A nail composition according to claim 1, wherein the nail composition is a polish protectant or colored coating. A nail composition kit or set comprising the nail composition of claim 1.