NAIL POLISH TOP COAT COMPOSITION

Abstract

NAIL POLISH TOP COAT COMPOSITION The invention provides a composition for use on nails, comprising a solvent system that includes at least one non-aqueous, volatile polar solvent; a water-insoluble nitrocellulose polymer; an organic silicone hybrid polymer; and an alkyd resin. It also provides methods, including those for use as a top coat. Figure for abstract: none

Description

Title of the invention: NAIL POLISH TOP COAT COMPOSITION technical field

[0001] The present invention relates to nail polish top coat compositions, and specifically to nail polish top coat compositions comprising a certain organic silicone hybrid polymer and an alkyd resin. BACKGROUND

[0002] Consumers use nail polish to cosmetically enhance the appearance of their nails or to protect them from the aggressions of their daily environment. This can be achieved using various coatings that include a base coat, a colored coat, and / or a top coat, where the base coat ensures adhesion to the nails, the colored coats enhance the color, and a top coat provides shine.

[0003] Over time, nail polish applied to nails loses its shine. The present inventors have now found a way to provide not only a high initial shine, but also long-lasting shine retention. BRIEF SUMMARY

[0004] The present invention relates to a nail polish top coat composition (also referred to herein as a "nail top coat composition" or simply "composition"). The nail polish top coat composition includes a solvent system. The solvent system includes at least one non-aqueous, volatile polar solvent. The nail polish top coat composition further includes a water-insoluble nitrocellulose polymer and an organic silicone hybrid polymer formed from at least one monomer comprising a carboxylic acid and at least one vinyl monomer. The nail polish top coat composition further includes an alkyd resin.

[0005] The organic silicone hybrid polymer may be a copolymer of vinyl acetate, vinylsilicone, C3-7 carboxylic acid, and C7-45 alkyl vinyl ester. Advantageously, the organic silicone hybrid polymer may be a crosslinked polymer of crotonic acid / C8-12 isoalkyl vinyl esters / VA / bis-vinyldimethicone and / or be present at a weight concentration in the nail top coat composition of approximately 0.05% to approximately 2.5% by weight.

[0006] It may also be advantageous for the alkyd resin to be or include a phthalic anhydride / glycerol / glycidyl decanoate copolymer and / or to be present at a weight concentration in the nail top coat composition that is from about 8% to about 13%.

[0007] It may also be advantageous for the composition to be substantially free of dye and free of UV-curable material.

[0008] It may also be advantageous for at least one non-aqueous volatile polar solvent to include at least one volatile acetate, such as ethyl acetate and butyl acetate, such that when these compounds are present at a weight concentration such that a total weight concentration of ethyl acetate and butyl acetate in the nail top coat composition is about 50% to about 90%.

[0009] It may also be advantageous for the nail top coat composition to further include sucrose acetobutyrate and / or acetyl tributyl citrate.

[0010] It may also be advantageous for the water-insoluble nitrocellulose polymer to be nitrocellulose such that it is present at a weight concentration in the nail top coat composition of about 5% to about 15%.

[0011] According to certain embodiments, the top coat composition of nail polish can meet a plurality, or even all, of these requirements listed above.

[0012] According to another aspect of the invention, a method for treating a nail is provided. The method includes applying the nail polish top coat composition described above to the nail. Brief description of the drawings

[0013] An implementation of this technology is described, by way of example only, with reference to the accompanying figure, in which:

[0014] [Fig-1] [Fig.1] shows a gloss (brightness) graph at 60 degrees on dry abrasion cycles for various compositions including different concentrations of alkyd resin and / or silicone organic hybrid polymer. DETAILED DESCRIPTION

[0015] As used herein, the expression "at least one" means one or more and thus includes individual components as well as mixtures / combinations.

[0016] As used herein, the terms "include", "includes" and "including" are understood to be non-limiting.

[0017] Apart from the examples of operation, or unless otherwise indicated, all numbers expressing quantities (e.g., concentrations, ratios, and the like) of ingredients and / or reaction conditions shall be understood as modified in all cases by the term "approximately", meaning to within 10% or 15% of the stated number (e.g., "approximately 10%" means 8.5% to 11.5% such as 9%). at 11%, and "about 2%" means from 1.7% to 2.3% such as from 1.8% to 2.2%.

[0018] Similarly, for ratios, the modifier "approximately" means to the nearest 10% or 15% of the number. For example, approximately 4:1 means from 3.4:1 to 4.6:1, preferably from 3.6:1 to 4.4:1. As a person skilled in the art will readily understand, when the first ingredient in a ratio is less than the second, then a ratio can be expressed "inversely." For example, if a second ingredient, B, is present in an amount or at a concentration 2.5 times greater than that of ingredient A, this can be identified as an A:B ratio of 1:2.5. "Approximately 1:10" means from 1:8.5 to 1:11.5, preferably from 1:9 to 1:11. Unless otherwise stated, all concentrations shown as percentages are concentrations by weight and also, unless otherwise stated, refer to the entire composition of the nail top coat.

[0019] As used herein, the expression "active ingredient" means with respect to the quantity

[0020] as a percentage of an ingredient or raw material, refers to 100% of the activity of the ingredient or raw material.

[0021] “Film-forming”, or “film-forming agent” or “film-forming polymer” or “resin” The term "film-forming agent," as used here, refers to a polymer or resin that leaves a film on the substrate to which it is applied, for example, after a solvent accompanying the film-forming agent has evaporated, been absorbed into the substrate, and / or dissipated onto it. A "silicone film-forming agent" is a film-forming agent that includes at least one silicone (a silicone atom bonded directly to an oxygen atom and also to a carbon atom, as in an organic fraction).

[0022] “Liquid” or “liquid cosmetic” or “liquid composition” refers to a com position having a fixed volume, which flows to cover the bottom and adopts the shape of the portion of the container it fills and is slightly compressible.

[0023] “Substitute” as used herein means comprising at least one substitute. Non-limiting examples of substituents include atoms, such as oxygen and nitrogen atoms, as well as functional groups, such as amine, ether, alkoxy, acyloxyalkyl, oxyalkylene, polyoxyalkylene, carboxylic acid, acylamino, amide, halogen-containing, ester, thiol, sulfonate, thiosulfate, siloxane, and polysiloxane groups. The substituent(s) may be further substituted.

[0024] “Virtually free” as used here means that although it is preferable that no quantity of the specific component is present in the composition, it is possible that there may be small quantities of it in the compositions of the invention provided that these quantities do not substantially affect at least one, preferably essentially most of the advantageous properties of the compositions of the invention. In some embodiments, substantially free means less than about 2% of the identified ingredient, such as less than about 1%, such as less than about 0.5%, based on the composition as a whole (or a particular component, if specified). The term "anhydrous" means substantially free of water.

[0025] The numeric ranges include the bounds and are intended to include all combinations and subcombinations. For example, from approximately 5%, 10%, or 15% to approximately 20%, 50%, or 60% can refer to approximately 5% to approximately 20%, approximately 5% to approximately 50%, approximately 5% to approximately 60%, approximately 10% to approximately 20%, approximately 10% to approximately 50%, approximately 10% to approximately 60%, approximately 15% to approximately 20%, approximately 15% to approximately 50%, or approximately 15% to approximately 60%. As used here, a ratio range is intended to include each specific ratio within the subranges and a combination of subranges between the given ranges.

[0026] “Brilliant” or “glossy” as used herein, refers to the brilliant sheen of Gloss meters are commonly used in nail art and other areas of cosmetics to measure the amount of light reflected by a surface or film. Gloss can be quantified, for example, as a percentage of reflection at different angles, specifically at 20° and 60°.

[0027] The compositions and methods of the present invention may include, consist of, or consist essentially of the essential elements and limitations of the invention described herein, as well as any additional or optional ingredient, component or limitation described herein or otherwise useful.

[0028] The nail top coat compositions of the present invention include a solvent system, a water-insoluble nitrocellulose polymer, an organic silicone hybrid polymer, and an alkyd resin. Each of these will be discussed in turn. SOLVENT SYSTEM

[0029] The nail top coat compositions of the present invention include a solvent system. The function of the solvent system is to dissolve or disperse various components in the nail top coat composition and to evaporate at an appropriate rate to allow the relatively rapid formation of a film having desirable gloss and gloss retention properties.

[0030] The solvent system includes at least one non-aqueous, volatile polar solvent. The non-aqueous, volatile polar solvent is (1) "volatile" in that it evaporates at least as rapidly as butyl acetate; (2) is polar in that it includes at least one polar functional group (e.g., alcohol, ether, ester, ketone, hydroxyl, amine, amino, carboxyl, carbonyl and the like), and (3) "non-aqueous" in that it is not water and, in some embodiments, is not completely miscible with water in all concentrations at standard temperature and pressure.

[0031] According to some embodiments, the at least one non-aqueous volatile polar solvent includes an ester, such as one or more acetate compounds. In particularly notable embodiments, the acetate compound is selected from ethyl acetate, propyl acetate, butyl acetate, and combinations thereof. In some embodiments, the one or more acetate compounds are used as the major component of the at least one non-aqueous volatile polar solvent, meaning that the weight proportion of the one or more acetate compounds in the total amount of the at least one non-aqueous volatile polar solvent is greater than 50%, such as greater than approximately 75%, or such as greater than approximately 90%.

[0032] According to some embodiments, at least one non-aqueous volatile polar solvent is present in the nail top coat composition at a weight concentration of approximately 50% or 60% to approximately 75%, 80%, or 90%. In notable embodiments, the at least one non-aqueous volatile polar solvent comprises, or has a major fraction (and more particularly at least approximately 90% of, the totally volatile non-aqueous polar solvents) that is a mixture of volatile acetates such as ethyl acetate and butyl acetate. In other notable embodiments, the nail top coat composition has a total weight concentration of ethyl acetate and butyl acetate in the nail top coat composition of approximately 50% to approximately 90%.

[0033] According to some other embodiments, the at least one non-aqueous volatile polar solvent includes one or more monoalcohols, such as a C2-C5 monoalcohol like ethanol or isopropanol. In some embodiments, the one or more monoalcohols are used as a minor portion of the at least one non-aqueous volatile polar solvent, meaning that the weight proportion of the one or more monoalcohols in the total amount of the at least one non-aqueous volatile polar solvent is less than 50%, such as less than about 25%, such as less than about 10%. WATER-INSOLUBLE NITROCELLULOSE POLYMER

[0034] The nail top coat compositions of the present invention include a water-insoluble nitrocellulose polymer (e.g., cellulose nitrate). The nitrocellulose polymer can be formed by nitration of cellulose through exposure to acids such as nitric acid and / or sulfuric acid. Desirably, the nitrocellulose is soluble in the solvent system and, more particularly, soluble in one or more non-aqueous, volatile polar solvents.

[0035] The water-insoluble nitrocellulose polymer serves as a film-forming agent in the com position of top coat for nails. Nitrocellulose may be present at a concentration by weight in the composition of top coat of nail of about 5%, 6% or 7% to about 10%, 12% or 15% by weight. ORGANIC SILICONE HYBRID POLYMER

[0036] According to the present invention, nail compositions comprising at least one silicone organic hybrid polymer are proposed. A silicone organic hybrid polymer is formed from at least one monomer comprising a carboxylic acid and at least one vinyl monomer. By "vinyl monomer," as those skilled in the art will readily understand, is meant a monomer of the formula H2C=CHR, where R represents a functional group, such as a hydrogen atom, an alkyl ester, or the like. Furthermore, it is preferable that the at least one monomer comprising the carboxylic acid and the at least one vinyl monomer be two distinct monomers. Preferably, the silicone organic hybrid polymer is selected from a silicone vinyl acetate compound and a crosslinked anionic copolymer composed of organic polymer blocks and silicone blocks, resulting in a multiblock polymer structure, or mixtures thereof.

[0037] In particular, suitable examples of the organic silicone hybrid polymer of the present invention include, but are not limited to, vinyl acetate and vinylsilicone copolymers. These copolymers may optionally further include C3-7 carboxylic acid monomers and / or C7-45 alkyl vinyl ester monomers.

[0038] Preferably, the organic silicone hybrid polymer is free of phenyl fractions.

[0039] In particular, suitable examples of the silicone organic hybrid polymer of the present invention include, but are not limited to, crosslinked anionic copolymers comprising at least one crosslinked polysiloxane structural motif. PCT Patent Application Publication No. WO 2011 / 069786 discloses examples of such compounds.

[0040] A preferred organic silicone hybrid polymer of this disclosure is a compound bearing the INCI name Crotonic Acid / Vinyl C8-12 Isoalkyl Esters / VA / Bis-Vinyldimethicone Crosspolymer, which is a copolymer of crotonic acid, C8-12 isoalkyl vinyl esters, and vinyl acetate crosslinked with bis-vinyldimethicone. This organic silicone hybrid polymer is commercially available from Wacker Chemie AG under the trade name Wacker Belsil® PI 101 (may also be known as Wacker Belsil® P101) and may have an acid value of 28 to 33 mg KOH / g. Crotonic acid crosslinked polymer / C8-12 isoalkyl vinyl esters / VA / bis-vinyldimethicone is also known by the technical name crotonic acid crosslinked polymer / C8-12 isoalkyl vinyl esters / VA / divinyldimethicone.

[0041] Preferably, at least one organic silicone hybrid polymer is present in the nail composition of the present invention in amounts of active material generally ranging from about 0.01% to about 5%, preferably from about 0.03% to about 3%, and more preferably from about 0.05% to about 2.5%, by weight, based on the total weight of the cosmetic composition, including all intermediate ranges and sub-ranges. ALKYD RESIN

[0042] In accordance with the present invention, nail compositions comprising at least one alkyd resin are proposed.

[0043] Preferably, at least one alkyd resin is a polyester comprising fatty acid hydrocarbon chains. These resins can be obtained by polymerizing polyols and polyacids or their corresponding anhydrides in the presence of fatty acids, where the fatty acids can be used "as is" or in the form of fatty acid triglycerides or oils during the synthesis of the alkyd resin. Due to the presence of fatty acid hydrocarbon chains in the alkyd resin, alkyd resins are generally defined by their oil length. Consequently, the "oil length of an alkyd resin" is understood to mean the weight percentage of fatty acid hydrocarbon chains present in the alkyd resin.

[0044] Examples of suitable polyols that can be used in the synthesis of alkyd resin include, but are not limited to, at least one of pentaerythritol, trimethyl-lolpropane, trimethylolethane, neopentyl glycol, propylene glycol, ethylene glycol, 1,6-hexanediol, 1,4-butanediol, diethylene glycol and, in particular, glycerol.

[0045] Examples of suitable polyacid or anhydride that can 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, fumaric acid, azelaic acid, sebacic acid and, in particular, phthalic anhydride.

[0046] Examples of suitable fatty acids that can 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, in which 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. Examples include palmitic acid, stearic acid, oleic acid, ricinoleic acid, linoleic acid, linolenic acid, and, in particular, capric acid.

[0047] Fatty acids are present in the majority of naturally occurring oils, 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 can be identical or different. Natural oils can therefore be used during polymerization. Examples include linseed oil, tung oil, oxic acid oil, soybean oil, sunflower oil, safflower oil, castor oil, coconut oil, olive oil, palm oil, rapeseed oil, peanut oil, and tahini.

[0048] Specific examples of acceptable alkyd resins include, but are not limited to, at least one of those sold under the names "Alukidir ODE 230 70 E" or "Alukidir ODE 230 70 V" (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 tallol) or « Uradil XP 516 AZ® » (63% in tallol) by DSM Resins.“Alukidir ODE 230 70 E” or “Alukidir ODE 230 70 V” (phthalic anhydride / glycerol / glycidyl decanoate copolymer in 70% ethyl acetate) is particularly preferred.

[0049] Preferably, at least one alkyd resin is present in the nail composition of the present invention in amounts of active material generally ranging from about 0.5%, 0.7%, 0.8%, 0.9%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, 5.0%, 5.5%, 6.0%, 6.5%, 7.0%, 7.5% or 8.0% to about 8.0%, 9.0%, 10.0%, 11.0%, 12.0%, 13.0%, 14.0%, 15.0%, 16.0%, 17.0%, 18.0%. 19% or 20%, and more preferably from about 8% to about 13%, by weight, based on the total weight of the cosmetic composition, including all intermediate ranges and sub-ranges. In addition, at least one alkyd resin and the silicone organic hybrid polymer may be present in the nail composition in a weight ratio of about 5:1, 6:1 or 7:1 to about 7:1, 10:1, 15:1, 20:1, 30:1, 40:1, 50:1, 60:1, 70:1, 80:1, 90:1 or 100:1. OTHER INGREDIENTS

[0050] The nail top coat compositions of the present invention may include various other ingredients without significantly compromising the beneficial properties.

[0051] For example, according to certain embodiments, plasticizers other than alkyd resin may be included in the composition of the nail top coat. Examples of these other plasticizers include polar molecules with multiple ester groups, such as those with a molecular weight in the range of approximately 250 or 400 to approximately 1000 or 1500. Examples include sucrose acetobutyrate and acetyltributyl citrate. A further example of another plasticizer includes a cellulose ester of at least one C2-C4 organic acid. Examples include cellulose acetobutyrate. In some embodiments, the nail top coat composition includes an ingredient selected from a group consisting of cellulose acetobutyrate, sucrose acetobutyrate, and acetyltributyl citrate. Cellulose acetobutyrate is commercially available from Eastman Chemical as CAB-381-0.5. Sucrose acetobutyrate is sold under the name SAIB 90 by Eastman Chemical of Kingsport, TN.Acetyltributyl citrate is sold under the brand name Citroflex by Vertellus, or under the brand name Uniplex by Unitex Chemical of Greensboro, North Carolina. These other plasticizers may be present at concentrations ranging from approximately 1%, 2% or 3% to approximately 10%, 15% or 25% by weight.

[0052] Other examples of additional plasticizers include dipropylene glycol dibenzoate and 1,2-propylene glycol dibenzoate, trioctyl citrate, triethyl citrate, acetyltributyl citrate, or tributyl citrate. These additional plasticizers may be present at concentrations ranging from approximately 1%, 2%, or 3% to approximately 10%, 15%, or 25% by weight.

[0053] By way of further example, according to certain embodiments, additional polymers or resins may be included in the composition of a nail top coat. Acrylate copolymers are an example of a suitable additional polymer or resin. An example of a suitable acrylate copolymer is "acrylate copolymer," having an acid value ranging from approximately 145 to approximately 170 mg of KOH per gram, such as EPOMATT G-152, EPOMATT G-154, or ISOCRYL G-265, available from Estron Chemical, Inc. of Calvert City, KY. Other potential acrylate copolymers include those sold under the name PECOREZ®, such as, for example, PECOREZ AC 50, available from Phoenix Chemical.

[0054] Another example of a suitable polymer or resin is a polyester resin formed by reacting a polyhydric alcohol with a basic polyacid, for example, phthalic acid, such as the commercial product sold by Unitex Chemical Corporation under the name UNIPLEX 670-P, which is a polyester resin obtained by reacting trimellitic acid, neopentyl glycol, and adipic acid. (Meth)acrylic resins, according to the disclosure, may include copolymers of methyl methacrylate with butyl acrylate, butyl methacrylate, isobutyl methacrylate, or isobornyl methacrylate, for example, the products com commercial PARALOID DM-55, PARALOID B48N, PARALOID B66 and ELVACITE 2550; isobutyl methacrylate and butyl methacrylate copolymers, for example, the commercial product ELVACITE 2046; and isobutyl methacrylate polymers, for example, PARALOID B67.

[0055] These additional polymers or resins may be present at concentrations ranging from about 1%, 2% or 3% to about 10%, 15% or 25% by weight.

[0056] By way of further example, according to certain embodiments, mattifying agents may also be included in the composition of a nail top coat. Examples include silica, aluminosilicates, borosilicates, and the like. These mattifying agents may be present at concentrations ranging from approximately 0.25%, 0.5%, or 1% to approximately 1%, 2%, or 5% by weight.

[0057] In some notable embodiments, the nail polish top coat composition may include certain components such as water and / or colorants (coloring agent). However, in other embodiments, it is generally preferable for the nail top coat composition to be substantially free of water and / or colorants.

[0058] The nail top coat composition may be substantially free of dyes, pigments, pearls, effect pigments and the like that are commonly used in colour cosmetics or in coloured top coat nail polishes.

[0059] Dyes include, for example, fat-soluble dyes such as Sudan Red, DC Red 17, DC Green 6, [3-carotene, Sudan Brown, DC Yellow 11, DC Violet 2, DC Orange 5 and quinoline yellow.

[0060] Pigments may be white or colored, inorganic and / or organic, and coated or uncoated. Examples of inorganic pigments include titanium dioxide, optionally surface-treated, zirconium or cerium oxides, iron or chromium oxides, manganese violet, ultramarine blue, chromium hydrate, and ferric blue. Examples of organic pigments include carbon black, D&C type pigments, and lakes based on cochineal carmine or barium, strontium, calcium, or aluminum, such as D&C Red Nos. 10, 11, 12, and 13, D&C Red No. 7, D&C Red Nos. 5 and 6, and D&C Red No. 34, as well as lakes such as D&C Yellow Lake No. 5 and D&C Red Lake No. 2.

[0061] Pearlescent pigments include, for example, among white pearlescent pigments, such as mica coated with titanium dioxide or bismuth oxychloride, colored pearlescent pigments, such as mica coated with titanium dioxide with iron oxides, mica coated with titanium dioxide with in particular ferric blue or chromium oxide, or mica coated with titanium dioxide with an organic pigment of the aforementioned type and pearlescent pigments based on bismuth oxychloride.

[0062] Nail top coat compositions of the present invention may to be carried out by processes known in the art, such as by the optional premixing of certain ingredients in one or more solvents and the careful mixing of various ingredients together to provide a homogeneous mixture. METHODS OF USE

[0063] Nail top coat compositions can be applied to a nail, such as a fingernail or toenail. In some embodiments, the nail has a previously applied colored layer formed on it, and the nail top coat composition is applied over this previously applied colored layer. The nail top coat composition can be applied to the nail / previously applied colored layer formed on it by commonly used methods such as brush application or spraying.

[0064] The following examples are intended to illustrate the invention without limiting its scope. Percentages are given on an active weight basis. EXAMPLES: COMPOSITION AND TESTS Example 1: Comparative Examples

[0065] The compositions listed below in Table 1 (Comparative Examples) were prepared to evaluate the gloss retention of topcoat compositions after exposure to various abrasion test conditions, specifically dry abrasion, wet abrasion, and soap abrasion. These comparative compositions contained varying amounts of alkyd resin. Specifically, three compositions were prepared with different concentrations of alkyd resin, and a fourth composition was prepared with an organic silicone hybrid polymer without alkyd resin. Example 2: Inventive Examples

[0066] The compositions listed below in Table 2 (Inventive Examples) were prepared to evaluate the gloss retention of topcoat compositions after exposure to various abrasion test conditions, specifically dry abrasion, wet abrasion, and soap abrasion. These compositions contained varying amounts of alkyd resin with an organic silicone hybrid polymer. Specifically, two compositions were prepared having different concentrations of alkyd resin with an organic silicone hybrid polymer. SAMPLE PREPARATION

[0067] Samples were prepared by combining solvents, nitrocellulose, an organic silicone hybrid polymer, an alkyd resin, other plasticizers, other film-forming polymers, and other ingredients in a jar. The mixture was

[0068]

[0069]

[0070] The mixture was left to stand for 12 to 24 hours. It was then mixed for three minutes with a mixer-stirrer until uniform. The samples were then left to stand for 24 hours before testing to allow air bubbles to dissipate. The test nail top coat compositions were evaluated for gloss retention by measuring the gloss (shine) at 20°C and 60°C after exposure to various abrasion test conditions, specifically dry abrasion, wet abrasion, and soap abrasion. DESCRIPTION OF THE TEST To measure gloss retention, a film was pulled using a 6-mil necking bar onto the BYK-chart P121-10N black scuffing board and allowed to dry for 24 hours under ambient conditions. The black scuffing board was placed in a BYK Gardner basic model scuffing machine. A BYK Gardner 8812 abrasive brush and a 500 g BYK weight were used to perform an abrasion test under various conditions, specifically dry abrasion, wet abrasion, and soap abrasion. After 100 cycles, the surface of the scuffing board was wiped with a dry cloth, and the gloss was measured using the BYK-Gardner Micro-Tri-Gloss Meter. The same procedure was repeated up to 500 cycles. [Table 1] PAINTING Components Comparative Examples - Table 1 Inventive Examples - Table 2 E1.1 E1.2 E1.3 E1.4 E2.1 E2.2 Solvents, including acetates 72.3 78.5 77.1 77.1 72.3 78.5 Nitrocellulose 9.5 9.6 11.2 11.2 9.5 9.6 Crotonic acid crosslinked polymer / C8-12 isoalkyl vinyl esters / VA / bis-vinyldimethicone ** ** ** 0.1 0.1 0.1 Phthalic anhydride / glycerol / glycidyl decanoate copolymer. 9.9 0.7 ** ** 9.9 0.7 Other film-forming polymers 2.0 6.5 5.7 5.7 2.0 6.5 Other plasticizers 6.2 4.8 6.0 6.0 6.2 4.8 *Apparent errors due to rounding Total 100 100 100 100 100 100 Gloss at 60 degrees 0 cycles 87.6 75.9 59.3 77.2 87 80.1 100 cycles 78.1 66 49 77.1 85 78.9 500 cycles 62.6 57.2 37.9 76.6 83.9 71.4 A Gloss (0 cycles - 500 cycles) 25 18.7 21.4 0.6 3.1 8.7 Gloss at 20 degrees 0 cycles 58.8 31.8 18.3 34 57.9 38.1 100 cycles 39.4 23 11.1 33.5 52.3 37.3 500 cycles 21.6 14.4 3.5 32.7 48.7 29 A Brightness (0 cycle - 500 cycles) 37.2 17.4 14.8 1.3 9.2 9.1 RESULT

[0071] The nail top coat compositions and the gloss (shine) results are shown in Tables 1 and 2 above.

[0072] According to the results in Table 1 and Table 2, the composition with an organic silicone hybrid polymer improved gloss retention, and the compositions with both an organic silicone hybrid polymer and an alkyd resin clearly improved initial gloss and gloss retention under dry abrasion conditions. The effect is particularly pronounced at alkyd concentrations above 0.7 wt%, as shown in Example 2.1.

Claims

Demands

1. Composition for use on nails, comprising: a solvent system comprising at least one non-aqueous volatile polar solvent; a water-insoluble nitrocellulose polymer; an organic silicone hybrid polymer formed from at least one monomer comprising a carboxylic acid and at least one vinyl monomer; and an alkyd resin.

2. Composition according to claim 1, wherein the organic silicone hybrid polymer is a copolymer of vinyl acetate, vinyl-silicone, C3-7 carboxylic acid and C7-45 alkyl vinyl ester.

3. Composition according to any one of the preceding claims, wherein the organic silicone hybrid polymer is a crosslinked polymer of crotonic acid / C8-12 isoalkyl vinyl esters / VA / bis-vinyldimethicone.

4. Composition according to any one of the preceding claims, wherein the silicone organic hybrid polymer is free of phenyl fractions.

5. Composition according to any one of the preceding claims, wherein the alkyd resin is a phthalic anhydride / glycerol / glycidyl decanoate copolymer.

6. Composition according to any one of the preceding claims, wherein the silicone organic hybrid polymer is present at a weight concentration in the composition which is from about 0.05% to about 2.5% by weight.

7. Composition according to any one of the preceding claims, wherein the alkyd resin is present at a weight concentration in the composition which is from about 8% to about 13%.

8. Composition according to any one of the preceding claims, wherein the composition is substantially free of dye and is free of UV-curable material.

9. A method for treating a nail, comprising: applying to the nail a composition comprising: a solvent system comprising at least one non-aqueous volatile polar solvent; a water-insoluble nitrocellulose polymer; an organic silicone hybrid polymer formed from at least one monomer comprising a carboxylic acid and at least one vinyl monomer; and an alkyd resin.

10. A process according to claim 9, wherein the alkyd resin is present at a weight concentration in the composition of about 8% to about 13%.

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