Nail polish composition

Abstract

A kit of nail polish compositions, in particular of photopolymerizable nail polish, capable of being removed with a nail polish remover, comprising a base coat composition, a color coat composition and a top coat composition, wherein each of the base coat, color coat and top coat compositions comprises a pre-dispersion of at least one viscosity modifier in at least one polymerizable agent of acrylate monomer and / or oligomer type, at least one polymer and / or copolymer resin, at least one photoinitiator, and wherein the color coat composition further comprises at least one pigment or dye, characterized in that the base coat composition and the top coat composition may be identical and in that each of the base coat, color coat and top coat compositions is free of 2-hydroxyethyl methacrylate (HEMA) and 11,14-dioxa-2,9-diazaheptadec-16-enoic acid, 4,4,6,16-tetramethyl-10,15-dioxo-2-[(2-methyl-1-oxo-2-propenyl)oxy]ethyl ester (di-HEMA trimethylhexyl dicarbamate) and substantially free of hydroquinone (HQ) and hydroquinone monomethyl ether (MeHQ). The removal does not require an abrasive operation and can be carried out with an acetone-free nail polish remover.

Description

P-INTLAC-045 / WO NAIL POLISH COMPOSITION technical field

[0001] The present invention relates to light-cured or light-cured nail polish compositions, an assembly comprising these compositions and their method of use. State of the art

[0002] Nail polishes are generally used to protect nails or enhance their appearance. Beyond cosmetic requirements, consumers desire easy application and removal, as well as long-lasting polish. There are several types of nail polish, essentially two main types of formulas distinguished by how long they can remain on the nail without significant deterioration. Nail polish formulas can be used as a base coat, as a nail polish or nail polish itself, or as a top coat.Base coats are applied directly to the nail and / or artificial nail to protect it and facilitate the application and removal of nail polish. These base coats are generally colorless but can be colored if a specific effect is desired. Top coats are applied over the nail polish itself. These top coats are usually transparent and glossy to add shine and durability to the underlying layer.

[0003] Conventional nail polishes are typically composed of a film-forming agent, a solvent, and possibly one or more plasticizers, resins, rheology agents, and colorants. These nail polishes are non-(photo-)crosslinking (non-polymerizable) and are generally composed of lacquer or solvent bases. Conventional nail polishes often have a short-lived adhesion to the nail (typically 5 to 7 days) but can be easily removed. P-INTLAC-045 / WO

[0004] Soak-off or "UV gel" base coats are characterized by very strong adhesion to the nail (typically lasting 3 weeks), but are generally applied in specialized salons (only for professionals) and can cause significant nail damage upon removal. UV gel compositions are liquid compositions that, under the influence of light, trigger in situ polymerization and / or cross-linking reactions, resulting in polymeric networks that are most often cross-linked.

[0005] This type of nail polish is essentially composed of acrylic oligomers (such as acrylate, methacrylate, or poly(ethylene glycol)), pigments, a photoinitiator, and small amounts of solvent. While the polymer composition may vary, the application method remains the same. Under the influence of UV or visible light, the photoinitiators trigger a polymerization reaction of the acrylic monomers and oligomers deposited on the nail to form a complex polymer network encapsulating the colored fillers. This results in a thin, compact, and glossy synthetic film capable of lasting several weeks on the nail. The crosslinking intensity is adjusted according to the intended function of the application. Thus, the design of acrylic artificial or elongated nails requires a higher crosslinking density than a simple application of colored acrylic polish.The exceptional adhesion and cohesion of the film to the nail or base coat are due, on the one hand, to the density of the polymer mesh formed, combined with a partial diffusion of the acrylic oligomers and monomers onto the surface of the nail or base coat. This leads to partial encapsulation of the keratin fiber present on the nail surface or the components of the base coat. Therefore, this type of coating is generally applied in specialized clinics capable of effectively controlling the application methods and the UV curing time, which can vary depending on the nature of the monomers and oligomers used. This mechanical or potentially chemical adhesion to the keratin fiber can lead to removal of the coating by peeling. However, due to their extreme stability, the removal of these acrylic bases is not without damage to the nail.The damage caused by removal is directly related to the amount of acrylic bonds surrounding the nail and formed during polymerization. P-INTLAC-045 / WO

[0006] Furthermore, there are semi-permanent UV gel polishes that can be applied directly by the user. However, these polishes generally require a nail preparation step, such as buffing, to promote adhesion of the light-cured gel. Removal typically involves several steps: filing off the top coat, then removing the semi-permanent polish with an acetone-based solvent. This can be done either by soaking the nails in the solvent for 5 to 10 minutes, or by applying cotton pads, usually wrapped in aluminum foil and soaked in the solvent, to the nail for about 10 minutes (the foil wrap method). Alternatively, semi-permanent polishes can be removed by buffing or filing the nail surface. These steps can cause significant and lasting damage to the nail.UV gels also require a degreasing step to eliminate the sticky effect on the surface.

[0007] So-called "UV gel" or "soak-off" bases are generally based on compositions containing the monomers of 2-hydroxyethyl methacrylate (HEMA) and di-HEMA trimethylhexyl dicarbamate (di-HEMA TMHDC). HEMA and di-HEMA TMHDC are known to potentially cause adverse effects, such as allergic reactions, when applied outside the nail, for example, to the surrounding skin. According to Annex III of Regulation (EC) No 1223 / 2009 of the European Parliament and of the Council on cosmetic products of 12 November 2020, the use of nail products containing these substances, i.e., HEMA and / or di-HEMA TMHDC, is restricted to professionals. The application of so-called "UV gels" products with strong hold on the nail over time is therefore generally reserved for professionals and such bases called "UV gels" are only applicable in professional salons or specialized institutes.Similarly, hydroquinone (1,4-dihydroxybenzene, HQ) and hydroquinone monomethyl ether (MeHQ) are reserved for professional use only, according to entry 14 of Annex II of Regulation (EC) No 1223 / 2009.

[0008] Document US2015 / 0328104 describes so-called "hybrid" formulas that contain both ingredients capable of polymerizing under UV light and non-polymerizable film-forming agents, such as resins, P-INTLAC-045 / WO contains nitrocellulose, volatile solvents, and plasticizers. This document does not describe the use of silica-type rheological agents. Makeup removal is performed with acetone.

[0009] Therefore, there is a need to develop long-lasting (semi-permanent) nail polishes that can be applied directly by the consumer, without the drawbacks of existing UV gels and without damaging the nail. Ideally, these formulas provide high-quality makeup with improved wear and shine. Preferably, these formulas can be easily removed with standard acetone-free makeup removers / solvents, without the need for additional tools, and are also easy for users to apply themselves. Object of the invention

[0010] An object of the present invention is to propose a system of cosmetic nail compositions, more particularly long-lasting (semi-permanent) nail polishes that can be used directly by the consumer and have properties optimized for both makeup and makeup removal. General description of the invention

[0011] In order to solve at least some of the problems mentioned above, the present invention proposes a kit of nail polish compositions, in particular of light-curing nail polish compositions suitable for removal with a solvent, preferably (of the type) acetone-free, and comprising a base composition (coating), a coloured composition and (optionally) a top coat composition, in which each of the base, coloured and top coat compositions comprises: - at least one viscosity-modifying agent mixed and / or dispersed in at least one polymerizable agent of the monomer and / or oligomer type of (meth)acrylate, - at least one polymer resin and / or copolymers, - at least one photo-initiator, and P-INTLAC-045 / WO wherein the coloured composition further comprises at least one pigment or colouring, characterized in that the base composition and the finishing composition may be identical (i.e. either two of the same composition or one composition which serves as both base and finishing composition) and in that each of the base, coloured and finishing compositions is free from 2-hydroxyethyl methacrylate (HEMA) and 11,14-dioxa-2,9-diazaheptadec-16-enoic acid, 4,4,6,16-tetramethyl-10,15-dioxo-2-(2-methyl-1-oxo-2-propenyl)oxyethyl ester (di-HEMA Tri-methylhexyl dicarbamate) and substantially free from hydroquinone (HQ) and hydroquinone monomethyl ether (MeHQ).

[0012] A composition kit within the meaning of the invention means that the coating composition, the coloured composition and the finishing composition are marketed in two or three separate packages under the same packaging, or in two or three separate packages under their respective packaging with an indication of combined use of the coating, coloured and base composition.

[0013] According to the invention, suitable for removal with a solvent means that the entire "UV gel" type varnish applied to the nail can be removed simply by impregnating a cloth or cotton with a cosmetically acceptable solvent, such as ethyl acetate for example, or standard makeup remover, preferably without acetone (acetone-free), the said cloth being passed over the nail to remove the varnish without rubbing or even without tearing the varnish off the nail, the varnish can be removed by simple peeling, thus avoiding any damage to the nail.

[0014] Another advantage of the present invention is the obtaining of a photo-polymerizable nail polish with a longer lasting time compared to a classic nail polish, typically 14 to 15 days and which can be applied directly by the consumer, i.e. without the intervention of a professional in a specialized institute.

[0015] A composition is not simply an addition of ingredients easily replaced by others, and it is likely that adding or substituting one component will negatively affect other properties of the formulation. Therefore, a significant advantage of the present invention is that it offers P-INTLAC-045 / WO families of ingredients that are compatible with each other and that influence each other to achieve a hold and shine effect without compromising the integrity of the formulation.

[0016] An important additional advantage of the present invention is that nail makeup product compositions, preferably nail polish formulations, with improved hold can include ingredients commonly used by professionals. Therefore, professionals skilled in the art are not required to reconsider all the ingredients and their effects if they wish to use the present hold-enhancing ingredients. Consequently, these hold-enhancing ingredients exhibit excellent compatibility with both solvents and ingredients commonly used in the field.

[0017] The nail polish according to the invention is presented in the form of a makeup product composition kit. The makeup product composition kit includes a base composition, also called a coating composition or "base coat," a colored composition, and optionally a finishing composition, or "top coat." Each of the compositions can be applied sequentially by the user and then cured under irradiation. The base or coating composition can be applied directly to the nail to form one or more base layers. The colored composition is preferably applied over the base composition, forming the colored layer(s). The top layer(s) are then applied last to protect the colored layer(s). Each composition can therefore be applied in several layers.The finishing composition and the base composition can be the same composition.

[0018] The viscosity modifying agent is chosen from hydrophobic or semi-hydrophobic pyrogenic silicas and / or sucrose benzoate, preferably the viscosity modifying agent is dimethyl silylate silica, sucrose benzoate, or a mixture thereof.

[0019] In a preferred embodiment, the viscosity-modifying agent is prepared as a concentrated dispersion, also called a pre-dispersion, in at least one polymerizable agent of the monomer or oligomer type. The amount of viscosity-modifying agent in the concentrated dispersion is between 5 and P-INTLAC-045 / WO 20% by weight of the total weight of the concentrated dispersion, preferably between 6 and 19% by weight, and particularly preferably between 10 and 15% by weight of the total weight of the concentrated dispersion. The amount of viscosity-modifying agent in the concentrated dispersion may also be approximately 3% by weight or approximately 4% by weight of the total weight of the concentrated dispersion. Advantageously, according to a preferred embodiment, the viscosity-modifying agent is prepared as a concentrated dispersion in a hydroxypropyl methacrylate (HPMA) solution.

[0020] The quantity of the viscosity modifying agent is, for each of the compositions, between 1% and 6% by weight, preferably between 2% and 4% by weight, relative to the total weight of each of the compositions.

[0021] According to one embodiment, the kit compositions further include an additional monomer and / or oligomer acrylate polymerizable agent, i.e. a monomer and / or oligomer acrylate polymerizable agent different from the monomer and / or oligomer acrylate polymerizable agent used in the pre-dispersion with the viscosity modifying agent.

[0022] The inventors discovered that HEMA and / or di-HEMA THMCD can be advantageously replaced by a combination of HPMA and a viscosity-modifying agent such as silica or sucrose benzoate. Using the viscosity-modifying agent in concentrated form, also known as pre-dispersion, in an HPMA solution facilitates its incorporation into base, topcoat, and / or color compositions. Using a pre-dispersion of the viscosity-modifying agent in an HPMA methacrylate polymer allows for the dispersion of the viscosity-modifying agent within the varnish composition, i.e., the basecoat, topcoat, and / or color composition.

[0023] The polymerizable agent(s) of the monomer and / or oligomer type of acrylate included in the makeup product compositions of the composition kit may be chosen from the group consisting of monomers and / or oligomers of methyl acrylates, acrylate polyesters, in particular chosen from trimethylolpropane trimethacrylate, pentaerythrityl triacrylate, pentaerythrityl tetraacrylate, isobornyl methacrylate, the P-INTLAC-045 / WO pentaerythritol tetrakis(3-mercaptopropionate), hydroxypropyl methacrylate (HPMA) or a mixture of two or more of these.

[0024] A polymerizable agent of the monomer and / or oligomer type of acrylate alone or in combination may be used in each of the compositions of the kit in proportions of between 25% and 50% by weight, preferably between 30% and 45% by weight relative to the total weight of each of the compositions.

[0025] The polymer and / or copolymer resin included in the makeup product compositions of the kit is chosen from acrylic polymers, hydroxyethyl acrylate and isophorone diisocyanate (IPDI) copolymers, in particular chosen from bis-HEA poly(1,4-butanediol)-9 and IPDI copolymers, bis-HEMA poly(1,4-butanediol)-9 and IPDI copolymers, bis(pentaerythrityl triacrylate)-pentaerythrityl diacrylate and IPDI copolymers, bis-HEA polyglycol adipate and IPDI copolymers, or a mixture thereof.

[0026] According to one embodiment, the quantity of polymer resin and / or copolymer is, for each of the compositions, between 35% and 75% by weight, preferably between 40% and 70% by weight relative to the total weight of each of the compositions.

[0027] The total quantity, that is, the sum of the quantity of polymerizable agent of the monomer and / or oligomer type of acrylate and the quantity of polymer resin and / or copolymer, may be between approximately 80 and 97% by weight, preferably between approximately 90 and 95%, of the total weight of each of the base and / or finishing compositions. The total quantity of polymerizable agent of the monomer and / or oligomer type of acrylate and of polymer resin and / or copolymer may be between approximately 80 and 95% by weight, preferably between approximately 90 and 94% by weight, of the total weight of the colored composition, for the colored composition.

[0028] The viscosity modifying agent allows, in particular, the modulation of the viscosity of the composition, the optimization of the application of the composition with a brush, and allows the suspension of solid particles within the composition.

[0029] Each makeup product composition in the kit also includes at least one photoinitiator, which is chosen from among hydroxy-ketones, P-INTLAC-045 / WO phosphinates, more particularly selected from hydroxycyclohexyl phenyl ketone, ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate (TPO-L), or a mixture thereof.

[0030] The quantity of photoinitiator is, for each of the compositions, between 1% and 5% by weight, preferably between 2% and 4% by weight, the quantity of photoinitiator can also be 3% by weight in relation to the total weight of each of the compositions.

[0031] The colored composition may also include one or more coloring agents chosen from pigments, pearlescent pigments, glitter, and / or metallic particles. These coloring agents provide the aesthetic appearance desired by nail polish users. These coloring agents can produce very different effects such as iridescent, metallic, pearlescent, mirror, cream, glitter, crackle, matte, neon, fluorescent, holographic, etc.

[0032] In particular, the pigments used can be selected from the group consisting of green phthalocyanine (Cl 74260), Prussian blue (Cl 77510), manganese violet (Cl 77742), quinoline yellow (Cl 47005), titanium dioxide (Cl 77891), black iron oxide (Cl 77499), red iron oxide (Cl 77491), DC Red 6 Ba Lake (Cl 15850), DC Red 7 Ca Lake (Cl 15850:1), DC Red 34 Ca Lake (Cl 15880), FDC Yellow 5 Al Lake (Cl 19140), FDC Blue 1 Al Lake (Cl 42090), ultramarine blue (Cl 77007), DC Violet 2 (Cl 60725), DC Black 2 (Cl 77266), etc.

[0033] Mother-of-pearl is also usable in the invention. Mother-of-pearl consists of mineral particles of various types coated with one or more layers of oxides (titanium oxides or iron oxides) or pigments. Mother-of-pearl can be in powder or sheet form in various sizes. Examples of mother-of-pearl usable in the invention include: - mother-of-pearl prepared from natural mica and having undergone successive coating operations, - mother-of-pearl prepared from synthetic mica, also called "synthetic fluorphlogopite", - mother-of-pearl prepared from calcium sodium borosilicate, P-INTLAC-045 / WO - mother-of-pearl prepared from silica oxide.

[0034] The glitters usable in the invention can be prepared from several types of materials such as polyester films having a metallic layer on the surface, polyethylene terephthalate, polybutylene terephthalate, acrylate copolymers, acrylate copolymers or even aluminum.

[0035] Each composition in the kit, as a nail polish product, may also independently contain at least one plasticizer. Plasticizers are compounds with a high boiling point that do not evaporate when the nail polish dries. They are used to modulate the hardness of the film formed in order to obtain the desired physicochemical characteristics of the film and generally represent 0% to 12% by dry weight, preferably 4% to 8% by dry weight relative to the total weight of the composition.The plasticizer is preferably chosen from acetyl tributyl citrate, acetyl triethyl citrate, tributyl citrate, triethyl citrate, triacetin, trimethyl pentanyl diisobutyrate, triethylhexanoin, sucrose benzoate, dibutyl adipate, diethyl phthalate, diisobutyl adipate, diisopropyl adipate, dipropylene glycol dibenzoate, N-ethyl toluene sulfonamide, its ortho and para isomers, N-(2-hydroxypropyl) benzene sulfonamide and N-(n-butyl) benzene sulfonamide, etc.

[0036] The nail makeup product compositions in the kit may also include various additives chosen from among film-forming agents, resins, surface modifiers and so-called "treatment" agents, or a mixture thereof.

[0037] Among the additives that can be used according to the invention, we will mention surface modifiers such as cyclomethicones or cyclopentasiloxane, dimethicones and trimethylsiloxysilicate.

[0038] Compositions as nail makeup and / or false nail products may further include one or more polymerization stabilizers, preferably 2,6-di-tert-butyl-4-methylphenol (BHT).

[0039] According to one embodiment, each of the compositions is photopolymerizable under electromagnetic irradiation, preferably under UV irradiation, or under visible light, more particularly by means of a diode P-INTLAC-045 / WO electroluminescent (LED). Each composition is photo-polymerizable under electromagnetic irradiation for an exposure time of approximately 60 seconds after application of the composition to the nail or false nail.

[0040] In a second aspect, the invention proposes a method for preparing a kit of light-cured nail polish compositions as described above.

[0041] The light-curing nail polish composition kit includes a base coat, a colored base coat, and a top coat, in which the base and top coats are prepared according to the following steps: (a) disperse under vigorous stirring at least one viscosity modifying agent selected from hydrophobic or semi-hydrophobic pyrogenic silicas and / or sucrose benzoate, in at least one polymerizable agent of the monomer and / or oligomer type of acrylate, preferably in hydroxypropyl methacrylate (HPMA), (b) mixing the pre-dispersion obtained in step (a) with at least one polymer resin and / or copolymers selected from acrylic polymers, hydroxyethyl acrylate and isophorone diisocyanate (IPDI) copolymers, at least one additional acrylate monomer and / or oligomer polymerizable agent, and at least one photoinitiator; and wherein the coloured composition is prepared according to the steps: (a) disperse under vigorous stirring at least one viscosity modifying agent selected from hydrophobic or semi-hydrophobic pyrogenic silicas and / or sucrose benzoate, in at least one polymerizable agent of the monomer and / or oligomer type of acrylate, preferably in hydroxypropyl methacrylate (HPMA); (a') disperse under vigorous stirring at least one pigment and / or dye in at least one polymer resin and / or copolymers and at least one polymerizable agent of the monomer and / or oligomer type of acrylate, then optionally grind the colored pre-dispersion; (b') mix the pre-dispersion obtained in step (a) with the colored pre-dispersion obtained in step (a') and with at least one polymer resin and / or P-INTLAC-045 / WQ copolymers selected from acrylic polymers, hydroxyethyl acrylate and isophorone diisocyanate (IPDI) copolymers, at least one additional acrylate monomer and / or oligomer polymerizing agent, and at least one photoinitiator, characterized in that the base composition and the finishing composition can be identical (i.e., either two of the same composition or one composition that serves as both the base and finishing composition), and the base, colored, and finishing compositions of the formulation kit are free from 2-hydroxyethyl methacrylate (HEMA) and 11,14-dioxa-2,9-diazaheptadec-16-enoic acid, 4,4,6,16-tetramethyl-10,15-dioxo-2-(2-methyl-1-oxo-2-propenyl)oxyethyl ester (di-HEMA). Trimethylhexyl-dicarbamate) and substantially free of hydroquinone (HQ) and hydroquinone monomethyl ether (MeHQ) of 2-hydroxyethyl methacrylate (HEMA), 11,14-dioxa-2,9-diazaheptadec-16-enoic acid, 4,4,6,16-tetramethyl-10,15-dioxo-2-(2-methyl-1-oxo-2-propenyl)-oxy-ethyl ester (di-HEMA Trimethylhexyl dicarbamate) and substantially free of hydroquinone (HQ) and hydroquinone monomethyl ether (MeHQ).

[0042] The at least one additional acrylate monomer and / or oligomer polymerizable agent may be the same acrylate monomer and / or oligomer polymerizable agent used in step (a) and / or step (a') as appropriate, or may be a different acrylate monomer and / or oligomer polymerizable agent.

[0043] According to a third aspect, the invention relates to the use of a kit of compositions for nail and / or false nail makeup comprising the steps: i. application directly onto a nail or false nail of a base composition, by which at least one layer of base composition is deposited using an applicator, the layer of base composition is then photo-polymerized under light radiation for a time of about t=60 seconds to form a base layer, if several layers are applied, the exposure of the nail or false nail to light radiation is preferably carried out after application of each layer; P-INTLAC-045 / WO ii. application of at least one layer of a colored composition onto the light-cured base layer using an applicator; the colored layer is then light-cured under light irradiation for a time of approximately t=60 seconds to form a light-cured colored layer; exposure of the nail or artificial nail to light irradiation is preferably carried out after application of each layer; iii. application of at least one layer of a top coat onto the light-cured colored layer using an applicator; the top coat is then light-cured under light irradiation for a time of approximately t=60 seconds to form a top coat; exposure of the nail or artificial nail to light irradiation is preferably carried out after application of each layer.

[0044] The inventors observed that even in the absence of HEMA and diHEMA, the nail polish composition, once applied to the nail, remains on the nail for at least 14 to 15 days. Furthermore, the inventors observed that once applied to the nail, the polish can be removed using a simple nail polish remover, without involving steps that could damage the nail, such as scraping or filing. The light-cured nail polish according to the invention can be removed from the nail without the need to file or sand the top layer of the polish. The polish is removed by peeling it off after using an acetone-type solvent by immersion and / or by the foil method, for an application time of approximately 10 minutes.When the makeup remover is acetone-free, the application time ranges from a few minutes to approximately 20 minutes during the soaking and / or foil-wrapping method. Alternatively, a simple combination of warm water, soap, and oil can be used as a remover; this is much gentler on the nails.

[0045] A particularly advantageous and very gentle nail polish removal method includes the following steps: Step 1: Soak nails in a bowl of warm soapy water for a few minutes, preferably about 3 minutes, advantageously at a temperature between 30 and 40 °C, for example at 38 °C. P-INTLAC-045 / WQ Step 2: Apply a few drops of oil, preferably coconut oil, to the nails and cuticles. Step 3: Peel off. Use a wooden stick to facilitate removal.

[0046] According to a particular embodiment, the compositions of the kit according to the invention are intended to be applied to the nails and / or false nails according to the process of the invention.

[0047] According to the invention, "free from HEMA and / or di-HEMA THMDC" means that the composition comprises less than approximately 0.01% by weight, preferably 0.0001% by weight of HEMA and / or di-HEMA THMDC, by weight of the total composition. In other words, the amount of free HEMA in the nail polish composition(s) is less than approximately 100 ppm, preferably less than approximately 50 ppm, and is therefore present in technically unavoidable trace amounts from commercial products and not subject to the intentional addition of HEMA. "Virtually free from HQ and / or Me-HQ" means that the composition may contain the compound in trace amounts, preferably the composition comprises less than approximately 0.001% by weight of HQ and / or Me-HQ by weight of the total composition.These compounds may be found in trace amounts in the composition, particularly because these compounds may be included in trace amounts in commercial products as radical scavengers in methacrylate solutions, for example. Examples:

[0048] The examples below relate to various formulations of compositions for light-curing nail polish kits.

[0049] Makeup product compositions, including coating and finishing compositions, were prepared: P-INTLAC-045 / WO

[0050] Preparation of a pre-dispersion, step (a):

[0051] The values ​​are expressed as a percentage by weight relative to the total weight of the pre-dispersion.

[0052] Base (coating) and / or finishing compositions as makeup products for nails and / or artificial nails: P-INTLAC-045 / WO

[0053] The values ​​are expressed as a percentage by weight relative to the total weight of the composition.

[0054] Coloring composition as a makeup product for nails and / or false nails according to the invention

[0055] Example of Pre-dispersion and Solution A:

[0056] The values ​​are expressed as a percentage by weight relative to the total weight of solution A.

[0057] Preparing a colored composition:

[0058] The colour composition is prepared according to the following steps:

[0059] (a) Preparation of a pre-dispersion (pre-dispersion 1): 6.35% by weight of the viscosity-modifying agent is dispersed under vigorous stirring in 93.65% of P-INTLAC-045 / WO weight of hydroxypropyl methacrylate (HPMA, liquid), of the total weight of the predispersion;

[0060] (a') preparation of a colored pre-dispersion:

[0061] The weight percentages are expressed relative to the total weight of the colored pre-dispersion.

[0062] (a') Disperse, under vigorous stirring, 5 to 25% by weight of at least one pigment and / or colorant in approximately 60 to 80% by weight of a polymer resin and / or copolymer, and approximately 14 to 20% by weight of a polymerizable agent of the monomer and / or oligomer type of acrylate. The colored pre-dispersion may optionally be ground.

[0063] (b') mix the pre-dispersion obtained in step (a) with at least one polymer and / or copolymer resin, at least one photoinitiator to obtain solution A; mix solution A with the coloured pre-dispersion B obtained in step (a'), to obtain a coloured composition according to the invention.

[0064] Use of a compounding kit according to the invention:

[0065] Tests were carried out:

[0066] The process of applying makeup to nails and / or false nails

[0067] (1) The base composition was applied directly to the nail and / or artificial nail, without prior treatment of the nail and / or artificial nail, by depositing at least one layer of base composition. The base coating was then cured / photo-polymerized under UV and / or visible light irradiation for approximately 60 seconds. If several layers are applied, the step of P-INTLAC-045 / WO curing / photo-polymerization under light irradiation is performed after each layer application.

[0068] (2) The coloured composition is applied directly to the coating layer obtained in step (1) in the form of at least one layer. The coloured layer is then photo-cured under UV and / or visible light irradiation for approximately 60 seconds. If several coloured layers are applied, the curing / photo-curing step under light irradiation is carried out after each application of the coloured layer.

[0069] (3) The topcoat is then applied directly onto the (last) light-cured coloured layer, in the form of at least one layer. The topcoat is then light-cured under UV and / or visible light irradiation for approximately 60 seconds. If multiple topcoats are applied, the light-curing / light-curing step is performed after each coloured layer application.

[0070] The nail polishes obtained according to the invention demonstrated a hold on the nail of approximately 14 to 15 days without any alteration to the surface of the polish or its color. The hold on the nail of the polish according to the invention is therefore extended compared to a conventional nail polish applied directly by the user without the intervention of a professional in a specialized salon. Furthermore, users were able to remove these compositions with a standard makeup remover. These nail polish compositions no longer require mechanical removal such as sanding or filing, which can damage the nail, but can be removed by peeling after the application of a standard makeup remover by immersion or wrapping in said remover. Acetone can be used as a standard remover, but a non-acetone solvent such as ethyl acetate also works very well.It is also possible to simply use a combination of warm water, soap and oil as a remover; which is much less aggressive on the nails. P-INTLAC-045 / WO

[0071] As mentioned above, a particularly advantageous and much less aggressive nail polish removal method includes the following steps: Step 1: Soak nails in a bowl of warm soapy water for a few minutes, preferably about 3 minutes, advantageously at a temperature between 30 and 40 °C, for example at 38 °C. Step 2: Apply a few drops of oil, preferably coconut oil, to the nails and cuticles. Step 3: Peel off. Use a wooden stick to facilitate removal.

[0072] The composition kit according to the invention can advantageously be used, i.e. the photo-polymerizable nail polish can be applied and removed directly (at home) by the consumer without the intervention of a professional in a specialized institute, while having a prolonged hold of about 14 to 15 days.

Claims

P-INTLAC-045 / WO Demands 1. Nail polish composition kit, in particular light-curing nail polish, suitable for removal with nail polish remover, comprising a base composition, a coloured composition and a top coat composition, in which each of the base, coloured and top coat compositions comprises: - a pre-dispersion of at least one viscosity-modifying agent, chosen from hydrophobic or semi-hydrophobic pyrogenic silicas and / or sucrose benzoate, in at least one polymerizable agent of the monomer and / or oligomer type of acrylate, - at least one polymer resin and / or copolymers chosen from acrylic polymers, hydroxyethyl acrylate and isophorone diisocyanate (IPDI) copolymers, - at least one photoinitiator, and wherein the coloured composition further comprises at least one pigment or dye, characterized in that the base composition and the finishing composition may be identical and in that each of the base, coloured and finishing compositions comprises less than about 0.01% by weight of 2-hydroxyethyl methacrylate (HEMA) and 11,14-dioxa-2,9-diazaheptadec-16-enoic acid, 4,4,6,16-tetramethyl-10,15-dioxo-2-(2-methyl-1-oxo-2-propenyl)oxyethyl ester (di-HEMA Trimethylhexyl dicarbamate) and comprises less than about 0.01% by weight of hydroquinone (HQ) and hydroquinone monomethyl ether (MeHQ).

2. Kit according to claim 1, wherein the polymerizable agent is selected from monomers and / or oligomers of methyl acrylates, acrylate polyesters, in particular selected from trimethylolpropane trimethacrylate, pentaerythrityl triacrylate, pentaerythrityl tetraacrylate, isobornyl methacrylate, pentaerythritol tetrakis(3-mercaptopropionate), hydroxypropyl methacrylate (HPMA) or a mixture of two or more of these.

3. Kit according to any one of the preceding claims, wherein the quantity of the polymerizable agent is, for each of the compositions, between 25% P-INTLAC-045 / WO and 50% by weight, preferably between 30% and 45% by weight relative to the total weight of each of the compositions.

4. Kit according to any one of the preceding claims, wherein the polymer resin and / or copolymer is selected from bis-HEA poly(1,4-butanediol)-9 and IPDI copolymers, bis-HEMA poly(1,4-butanediol)-9 and IPDI copolymers, bis(pentaerythrityl triacrylate)-pentaerythrityl diacrylate and IPDI copolymers, bis-HEA polyglycol adipate and IPDI copolymers, or a mixture thereof.

5. Kit according to any one of the preceding claims, wherein the quantity of polymer resin and / or copolymer is, for each of the compositions, between 35% and 75% by weight, preferably between 40% and 70% by weight relative to the total weight of each of the compositions.

6. Kit according to any one of the preceding claims, wherein the viscosity-modifying agent is dimethyl silylate silica, or sucrose benzoate, or a mixture thereof.

7. Kit according to any one of the preceding claims, wherein the viscosity modifying agent is mixed for each of the compositions in an HPMA solution, and wherein the amount of viscosity modifying agent in the HPMA solution is between 5 and 20% by weight, preferably between 6 and 19% by weight, particularly preferably between 10 and 15% by weight relative to the total weight of the concentrate solution.

8. Kit according to any one of the preceding claims, wherein the quantity of the viscosity modifying agent is, for each of the compositions, between 1% and 6% by weight, preferably between 2% and 4% by weight, relative to the total weight of each of the compositions.

9. Kit according to any one of the preceding claims, wherein the photoinitiator is selected from hydroxy-ketones, phosphinates, more particularly selected from hydroxycyclohexyl phenyl ketone, ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate (TPO-L), or a mixture thereof. P-INTLAC-045 / WO 10. Kit according to any one of the preceding claims, wherein the quantity of photoinitiator is, for each of the compositions, between 1% and 5% by weight, preferably between 2% and 4% by weight relative to the total weight of each of the compositions.

11. Kit according to any one of the preceding claims, wherein the base, coloured and / or finishing composition further comprises a polymerisation stabilizer, preferably 2,6-di-tert-butyl-4-methylphenol (BHT).

12. Kit according to any one of the preceding claims, wherein the basic, coloured and / or finishing composition further comprises one or more additives selected from resins, surface modifiers.

13. Kit according to any one of the preceding claims, wherein each of the compositions is photopolymerizable under electromagnetic irradiation, preferably under UV irradiation, or under visible light, more particularly by means of a light-emitting diode (LED).

14. Method for preparing a light-curing nail polish composition kit comprising a base composition, a colour composition, and a top coat composition, wherein the base composition and the top coat composition are prepared according to the following steps: (a) disperse under vigorous stirring at least one viscosity modifying agent selected from hydrophobic or semi-hydrophobic pyrogenic silicas and / or sucrose benzoate, in at least one polymerizable agent of the monomer and / or oligomer type of acrylate, preferably in hydroxypropyl methacrylate (HPMA), (b) mix the pre-dispersion obtained in step (a) with at least one polymer resin and / or copolymers selected from acrylic polymers, hydroxyethyl acrylate and isophorone diisocyanate (IPDI) copolymers, with at least one additional monomer and / or oligomer acrylate polymerizable agent and with at least one photoinitiator; P-INTLAC-045 / WO and in which the colored composition is prepared according to the following steps: (a) disperse under vigorous stirring at least one viscosity modifying agent selected from hydrophobic or semi-hydrophobic pyrogenic silicas and / or sucrose benzoate, in at least one polymerizable agent of the monomer and / or oligomer type of acrylate, preferably in hydroxypropyl methacrylate (HPMA); (a') disperse under vigorous stirring at least one pigment and / or dye in at least one polymer resin and / or copolymers and at least one polymerizable agent of the monomer and / or oligomer type of acrylate, then optionally grind the colored pre-dispersion; (b') mix the pre-dispersion obtained in step (a) with the coloured pre-dispersion obtained in step (a') and with at least one polymer resin and / or copolymers selected from acrylic polymers, hydroxyethyl acrylate and isophorone diisocyanate (IPDI) copolymers, with at least one additional monomer and / or oligomer acrylate polymerizable agent and with at least one photoinitiator; characterized in that the base composition and the finishing composition may be identical and in that the base, colored and finishing compositions comprise less than about 0.01% by weight of 2-hydroxyethyl methacrylate (HEMA) and 11,14-dioxa-2,9-diazaheptadec-16-enoic acid, 4,4,6,16-tetramethyl-10,15-dioxo-2-(2-methyl-1-oxo-2-propenyl)oxyethyl ester (di-HEMA Trimethylhexyl dicarbamate) and comprise less than about 0.01% by weight of hydroquinone (HQ) and hydroquinone monomethyl ether (MeHQ).

15. A method according to claim 14 for preparing a kit of light-curing nail polish compositions according to any one of the claims P-INTLAC-045 / WO 16. Use of a light-curing nail polish composition kit according to claims 1 to 13, comprising the steps: i. direct application to a nail or artificial nail of a base composition, whereby at least one layer of base composition is deposited using an applicator, the layer of base composition is then photo-cured under light radiation for a time t=60 seconds to form a base layer, if several layers are applied, the exposure of the nail or artificial nail to light radiation is preferably carried out after application of each layer; ii.iii. Application of at least one layer of a colored composition to the light-cured base layer using an applicator; the colored layer is then light-cured under light irradiation for a time t=60 seconds to form a light-cured colored layer; exposure of the nail or artificial nail to light irradiation is preferably carried out after application of each layer; iii. Application of at least one layer of a top coat to the light-cured colored layer using an applicator; the top coat is then light-cured under light irradiation for a time t=60 seconds to form a top coat; exposure of the nail or artificial nail to light irradiation is preferably carried out after application of each layer.

17. Use according to claim 16, wherein the nail polish is removed by peeling after application of a remover or oil using a soaked cloth and / or after immersion in a remover.

18. Use according to claim 17, characterized in that the solvent is of the acetone-free type.

Images