Cosmetics for oily keratin fibers

Abstract

To develop a cosmetic for oily keratin fibers that is excellent in shape retention effect, easy removal of a cosmetic film, volumizing effect, and lack of debris and bunching.SOLUTION FOR THE PROBLEM: Provided is a cosmetic for oily keratin fibers that contains the following components (A) to (C). (A) An alkyl acrylate / vinyl acetate copolymer that satisfies the following (1) and (2). (1) Molar ratio of an alkyl acrylate to vinyl acetate content is 15:85 to 35:65. (2) (B) Wax ester and (C) volatile oil which are dissolved when heated and mixed with isododecane at a mass ratio of 1:10 at 80°C are included.

Description

[Technical Field]

[0001] The present invention relates to a cosmetic composition for oily keratin fibers. [Background technology]

[0002] The main effects required of cosmetics for keratin fibers are, for example, to make eyelashes appear longer, thicker, and curled, thereby enhancing the beauty and impact of the eyes. In particular, a curl-retaining effect that keeps eyelashes curled upward, a volume effect that makes eyelashes appear thicker and darker, and the ability to adhere sufficiently to each individual eyelash with a single application and to adhere evenly without clumping or clumping are important for achieving beautiful eyelashes. To ensure sufficient adhesion to each individual eyelash, it is important for the cosmetic to have affinity for 18-methyleicosanoic acid (hereinafter abbreviated as 18-MEA), which is present on the surface of the eyelash cuticle.

[0003] In recent years, there has been a demand for cosmetics for keratin fibers that maintain their cosmetic film without losing their functionality even when exposed to water, such as sweat or rain. However, these cosmetics for keratin fibers that have a high cosmetic retention effect have poor makeup removal (cleanability), and to thoroughly remove the cosmetics for keratin fibers, scrubbing the eyelashes vigorously is required, which can place a strain on the eyelashes. Therefore, there has been a demand for cosmetics for keratin fibers that have a high cosmetic retention effect against water, such as sweat and rain, but can be easily removed with light pressure when cleansing.

[0004] To date, oily cosmetics for eyelashes have been developed that contain specific amounts and ratios of an oil-soluble film-forming agent, a nonionic surfactant with an HLB value of 7 to 10, a volatile oil, and a non-volatile oil, which not only give the eyelashes luster and curling effect and make-up wear (water resistance), but also have excellent removability with warm water (see, for example, Patent Document 1).

[0005] Additionally, an oil-based eyelash cosmetic has been developed that contains a wax with a melting point of 55 to 70°C, a surfactant with an HLB of 5 to 10, and specific amounts of a volatile hydrocarbon oil, thereby providing excellent volume, curl retention, and makeup durability, as well as excellent appearance and viscosity stability when stored at high temperatures, with little deterioration in finish even after extended use (see, for example, Patent Document 2).

[0006] Meanwhile, oil-in-water eyelash cosmetics have been developed that contain specific amounts and ratios of at least one water-soluble film-forming agent selected from alkyl acrylate-vinyl acetate copolymer emulsions, alkyl acrylate copolymer emulsions, carbon black, polyhydric alcohols, polyvinylpyrrolidone, and polyvinyl alcohols, thereby providing high gloss and blackness, dramatic cleansing properties in lukewarm water, and excellent storage stability (see, for example, Patent Document 3). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2017-125000 A [Patent Document 2] Japanese Patent Application Laid-Open No. 2012-140338 [Patent Document 3] Japanese Patent Application Laid-Open No. 2010-77042 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0008] However, conventional technology requires the use of nonionic surfactants with a specific HLB to achieve the conflicting effects of long-lasting makeup (eyelash shape retention, such as curl retention) (hereinafter referred to as "shape retention effect") and ease of cosmetic film removal. While the use of nonionic surfactants achieves both shape retention and ease of cosmetic film removal, they do not achieve satisfactory quality in terms of volume effect or the ability to apply a sufficient amount of cosmetic for oily keratin fibers evenly without clumping or bunching with a single application. Therefore, by focusing on the affinity of 18-MEA on eyelashes, we developed a cosmetic for oily keratin fibers that offers excellent volume effect and lacks clumping while achieving both shape retention and ease of cosmetic film removal, which were not possible with nonionic surfactants.

[0009] For example, polymers in emulsion form, as described in Reference 3, are frequently used in oil-in-water emulsion mascaras. Focusing on this technology, which allows for good adhesion to eyelashes while also being easy to remove with warm water, we developed a new material. As a result, we discovered that by using an alkyl acrylate / vinyl acetate copolymer with a specific monomer ratio that does not form an emulsion, it can be used in cosmetics for oily keratin fibers. It was found that its affinity with 18-MEA on the eyelashes allows for uniform adhesion without clumping or clumping, and while maintaining excellent shape retention, the cosmetic film is easy to remove. However, simply using an alkyl acrylate / vinyl acetate copolymer did not provide a satisfactory volume effect.

[0010] Therefore, an object of the present invention is to develop a cosmetic composition for oily keratin fibers that has excellent shape retention, ease of removal of a cosmetic film, volume effect, and no clumping or bunching. [Means for solving the problem]

[0011] In light of the above circumstances, the present inventors conducted extensive research and found that by combining a specific alkyl acrylate / vinyl acetate copolymer with a wax ester, it is possible to form a soft cosmetic film that is compatible with the alkyl acrylate / vinyl acetate copolymer and provides firmness, while also improving the volume effect. Furthermore, the present inventors discovered that the use of a volatile oil agent results in excellent shape retention, ease of removal of the cosmetic film, volume effect, and lack of clumping, leading to the completion of the present invention.

[0012] That is, the present invention provides: [1] The following components (A) to (C): (A) An alkyl acrylate / vinyl acetate copolymer that satisfies the following conditions (1) and (2): (1) The molar ratio of alkyl acrylate to vinyl acetate is 15:85 to 35:65. (2) It dissolves when heated and mixed with isododecane at a mass ratio of 1:10 at 80°C. (B) Wax ester (C) Volatile oil The present invention relates to a cosmetic composition for oily keratin fibers containing [2] The cosmetic composition for oily keratin fibers according to [1] above relates to a cosmetic composition for oily keratin fibers, wherein the alkyl acrylate of component (A) has 12 to 22 carbon atoms. [3] The cosmetic composition for oily keratin fibers according to [1] or [2] above, wherein the component (A) is a stearyl acrylate / vinyl acetate copolymer. [4] The cosmetic composition for oily keratin fibers according to any one of [1] to [3] above, wherein the component (B) is one or more waxes selected from the group consisting of carnauba wax, beeswax, candelilla wax, sunflower seed wax, and rice bran wax. [5] The cosmetic composition for oily keratin fibers according to any one of [1] to [4] above, wherein the content of the component (A) is 0.5 to 25% by mass. [6] The cosmetic composition for oily keratin fibers according to any one of [1] to [5] above, wherein the mass ratio (A) / (B) of the component (A) to the component (B) is 0.05 to 10. [7] The present invention further relates to a cosmetic composition for oily keratin fibers according to any one of [1] to [6], which contains component (D) an oil-soluble film-forming agent (excluding component (A)). [8] The present invention further relates to a cosmetic composition for oily keratin fibers according to any one of [1] to [7], which contains a component (E) an oil phase thickener (excluding the component (B)). [9] The cosmetic composition for oily keratin fibers according to [8], wherein the component (E) is one or more selected from the group consisting of hydrocarbon wax, dextrin fatty acid ester, sucrose fatty acid ester, organically modified clay mineral, fumed silica, and fatty acid or salt thereof. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a cosmetic for oily keratin fibers that is free from clumping and bunching, easy to remove the cosmetic film, and has excellent shape retention and volume effects. DETAILED DESCRIPTION OF THE INVENTION

[0014] The present invention will be described in detail below. In this specification, the symbol "to" means a range including the numerical values ​​before and after it.

[0015] (Alkyl acrylate / vinyl acetate copolymer) Component (A) in the present invention is an alkyl acrylate / vinyl acetate copolymer, which satisfies the following conditions (1) and (2). (1) The molar ratio of alkyl acrylate to vinyl acetate is 15:85 to 35:65. (2) It dissolves when heated and mixed with isododecane at a mass ratio of 1:10 at 80°C.

[0016] Alkyl acrylate / vinyl acetate copolymer can be obtained by copolymerizing alkyl acrylate and vinyl acetate. Here, the alkyl group in the alkyl acrylate may be linear or branched, but is not particularly limited. It preferably has 12 to 22 carbon atoms, more preferably 14 to 22 carbon atoms, even more preferably 16 to 22 carbon atoms, and most preferably stearyl acrylate, which has 18 carbon atoms. Furthermore, linear alkyl groups are more preferred. This range is more preferable because it provides superior clumping and bundling resistance, ease of cosmetic film removal, and shape retention. Furthermore, the copolymer form of the alkyl acrylate / vinyl acetate copolymer may be either a random copolymer or a block copolymer, but a random copolymer is preferred from the perspective of ease of cosmetic film removal.

[0017] The component (A) in the present invention satisfies the following condition (1). (1) The molar ratio of alkyl acrylate to vinyl acetate is 15:85 to 35:65. The molar ratio of alkyl acrylate to vinyl acetate is 15:85 to 35:65, and more preferably 20:80 to 30:70. The molar ratio is the ratio of the mass of the monomers charged before polymerization divided by the molecular weight of the monomers. This range is more preferable because it provides easier removal of the cosmetic film and better shape retention.

[0018] The component (A) in the present invention further satisfies the following condition (2). (2) It dissolves when heated and mixed with isododecane at a mass ratio of 1:10 at 80°C. In the present invention, component (A) and isododecane are prepared in a mass ratio of 1:10, and when heated and mixed at 80°C, they dissolve. Here, "dissolved" refers to a transparent solution; if component (A) is not dissolved, it will be in a precipitated or suspended state. Here, "transparent" refers to a transmittance of 80% or more when the transmittance is measured in the wavelength region of 700 nm using a spectrophotometer at a temperature of 80°C. Here, the transmittance can be measured by placing a measurement sample in a glass cell with an optical path length of 10 mm and an optical path width of 5 mm and using a spectrophotometer "UV-2500PC UV-VIS REDCORDING SPECTROPHOTOMETER" (manufactured by SHIMADZU CORPORATION).

[0019] The weight-average molecular weight of component (A) in the present invention is not particularly limited, but is preferably 1,000 to 100,000, more preferably 3,000 to 50,000, even more preferably 5,000 to 30,000, and most preferably 5,000 to 15,000. This range is more preferable because it provides superior clumping and bundling resistance, ease of cosmetic film removal, and shape retention. The weight-average molecular weight can be measured by gel permeation chromatography (GPC).

[0020] Component (A) in the present invention can be produced by a conventional method. For example, it can be obtained by a polymerization reaction of alkyl acrylate, vinyl acetate, and a polymerization initiator (e.g., 2,2'-azobisisobutyronitrile) in a volatile solvent (e.g., 2-propanol, ethanol, isododecane, etc.). Alternatively, the component (A) may be used as a solution after solvent substitution, if necessary, or may be washed, filtered, and granulated before use.

[0021] The content of component (A) in the present invention is not particularly limited, but is preferably 0.5% by mass (hereinafter simply abbreviated as "%") or more, more preferably 1% or more, and even more preferably 5% or more, calculated as solid content, relative to the total amount of the cosmetic for oily keratin fibers. It is also preferably 25% or less, more preferably 20% or less, and even more preferably 15% or less. It is also preferably 0.5 to 25%, more preferably 1 to 20%, and even more preferably 5 to 15%. This range is more preferable because it provides excellent shape retention and prevents clumping and clumping, making the cosmetic film easier to remove.

[0022] (wax ester) The wax ester (B) of the present invention can be any wax ester commonly used in cosmetics, regardless of its origin (e.g., animal, plant, or synthetic), and any of these can be used. Examples include hard lanolin, carnauba wax, beeswax, stearyl stearate, montan wax, hydrogenated jojoba oil, behenyl behenate, candelilla wax, sunflower seed wax, rice bran wax, and shea butter, and one or more of these can be used in combination. Among these, from the viewpoints of ease of removal of a cosmetic film and shape retention, one or more selected from the group consisting of carnauba wax, beeswax, candelilla wax, sunflower seed wax, and rice bran wax are preferred, one or more selected from the group consisting of carnauba wax, beeswax, candelilla wax, and rice bran wax are more preferred, and one or more selected from the group consisting of carnauba wax, beeswax, and candelilla wax are even more preferred.

[0023] The melting point of component (B) in the present invention is not particularly limited, but is preferably 50 to 90°C, more preferably 55 to 85°C, and even more preferably 60 to 80°C. This range is more preferable because it provides a more excellent shape-retaining effect. In the present invention, the melting point can be measured by Melting Point Test Method 1, General Test Method, in accordance with the Quasi-drug Ingredients Standards 2006.

[0024] The content of component (B) in the present invention is not particularly limited, but is preferably 2% or more, more preferably 5% or more, and even more preferably 10% or more, based on the total amount of the cosmetic for oily keratin fibers. It is also preferably 35% or less, more preferably 30% or less, and even more preferably 25% or less. It is also preferably 2 to 35%, more preferably 5 to 30%, and even more preferably 10 to 25%. This range is more preferable because it provides superior ease of removal of the cosmetic film, shape retention, and volume effect.

[0025] In the present invention, the mass ratio (A) / (B) of component (A) to component (B) is not particularly limited, but is preferably 0.05 or more, more preferably 0.1 or more, and even more preferably 0.3 or more. It is also preferably 10 or less, more preferably 5 or less, and even more preferably 1 or less. It is also preferably 0.05 to 10, more preferably 0.1 to 5, and even more preferably 0.3 to 1. This range is more preferable because it provides superior cosmetic film removal, shape retention, and volume effects.

[0026] (volatile oil) The volatile oil component (C) of the present invention is an oil component that is volatile at 20°C and normal pressure. Here, "volatile" refers to a boiling point of 260°C or lower at normal pressure (1 atmosphere). Component (C) volatile oil components are not particularly limited, but examples include silicone oils, hydrocarbon oils, and ester oils, and one or more of these can be used. Of these, silicone oils and hydrocarbon oils are preferred, with hydrocarbon oils being more preferred, from the viewpoints of preventing clumping and clumping and maintaining shape.

[0027] More specifically, examples of such oils include volatile silicone oils such as low molecular weight methylpolysiloxane (kinematic viscosity at 25°C of 1 to 5CS), decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, dodecamethylcyclohexasiloxane, methyltrimethicone, decamethyltetrasiloxane, and ethyltrisiloxane; and volatile hydrocarbon oils such as light liquid isoparaffin, isododecane, and isohexadecane, and one or more of these oils can be used. Among these, from the viewpoints of preventing clumping and bunching and of shape retention, one or more selected from the group consisting of low-molecular-weight methylpolysiloxane, decamethylcyclopentasiloxane, methyltrimethicone, light liquid isoparaffin, and isododecane are preferred, one or more selected from the group consisting of low-molecular-weight methylpolysiloxane, decamethylcyclopentasiloxane, and isododecane are more preferred, and one or more selected from the group consisting of low-molecular-weight methylpolysiloxane and isododecane are even more preferred.

[0028] Commercially available products of component (C) in the present invention include, for example, KF-96L-1.5CS, KF-96L-2CS (both manufactured by Shin-Etsu Chemical Co., Ltd.), ISODODECANE (manufactured by IMCD), IP Solvent 1620MU, IP Solvent 2028MU (both manufactured by Idemitsu Kosan Co., Ltd.), and the like, and these can be used alone or in combination of two or more.

[0029] The content of component (C) in the present invention is not particularly limited, but is preferably 20% or more, more preferably 25% or more, and even more preferably 30% or more, based on the total amount of the cosmetic for oily keratin fibers. It is also preferably 50% or less, more preferably 45% or less, and even more preferably 40% or less. It is also preferably 20 to 50%, more preferably 25 to 45%, and even more preferably 30 to 40%. This range is more preferable because it provides superior clumping and bundling prevention and shape retention.

[0030] (oil-soluble film-forming agent) The present invention may further contain component (D), an oil-soluble film-forming agent. Component (D), an oil-soluble film-forming agent, in the present invention, is soluble in oils such as volatile oils and forms a film. Here, "forming a film" refers to the formation of a film after a solution in which the resin is dissolved at 40% in a solvent in which the resin is soluble is applied to a glass plate with a 400 μm thick applicator and dried at room temperature for 24 hours. However, component (D) in the present invention does not include component (A). Component (D), an oil-soluble film-forming agent, in the present invention is not particularly limited as long as it is usable in ordinary cosmetics, and any can be used. The component (D) oil-soluble film-forming agent is not particularly limited, but examples thereof include silicone-based resins such as trimethylsiloxysilicate, polymethylsilsesquioxane, acrylic-silicone graft copolymers, and fluorine-modified silicone resins; dextrin isostearate (however, excluding component (E) described below); rosin acid-based resins such as rosin-modified phenolic resins and rosin esters (e.g., hydrogenated pentaerythrityl rosinate); hydrogenated abietic acid-based resins such as hydrogenated glyceryl abietic acid; candelilla resin; vinyl acetate resins; and oil-soluble resins such as polyvinyl isobutyl ether, polybutene, and polyisobutylene, and one or more of these may be used.

[0031] Commercially available products of the component (D) oil-soluble film-forming agent of the present invention include, for example, KF7312J (solid content 50%, solvent: cyclopentasiloxane, manufactured by Shin-Etsu Chemical Co., Ltd.), KF-9021 (solid content 50%, solvent: cyclopentasiloxane, manufactured by Shin-Etsu Chemical Co., Ltd.), BY11-018 (solid content 30%, solvent: cyclopentasiloxane, manufactured by Dow Corning Toray Co., Ltd.), KP541 (solid content 60%, solvent: isopropanol, manufactured by Shin-Etsu Chemical Co., Ltd.), SR-1000 (manufactured by Momentive Performance Materials), KP545 (solid content 30%, solvent: cyclopentasiloxane, manufactured by Shin-Etsu Chemical Co., Ltd.), KP575 (solid content 30%, solvent: cyclopentasiloxane, manufactured by Shin-Etsu Chemical Co., Ltd.), SILFORM FLEXIBLE Examples include RESIN (manufactured by Momentive Performance Materials), XS66-B8226 (solid content 50%, solvent: cyclopentasiloxane, manufactured by Momentive Performance Materials), XS22-8338E (solid content 30%, solvent: isododecane, manufactured by Shin-Etsu Chemical Co., Ltd.), Unifilma HVY (manufactured by Chiba Flour Mills), Estergum HP (manufactured by Arakawa Chemical Industries, Ltd.), and Pine Crystal KE-311 (manufactured by Arakawa Chemical Industries, Ltd.).

[0032] Of these, from the viewpoints of preventing clumping and bunching and ease of removing the cosmetic film, silicone-based resins and rosin acid-based resins are preferred, with one or more selected from the group consisting of trimethylsiloxysilicate, polymethylsilsesquioxane, fluorine-modified silicone resins, and pentaerythrityl hydrogenated rosinate being more preferred, and one or two selected from the group consisting of trimethylsiloxysilicate and fluorine-modified silicone resins being even more preferred.

[0033] The content of component (D) in the present invention is not particularly limited, but is preferably 1% or more, more preferably 3% or more, and even more preferably 5% or more, based on the total amount of the cosmetic for oily keratin fibers. It is also preferably 20% or less, more preferably 18% or less, and even more preferably 15% or less. It is also preferably 1 to 20%, more preferably 3 to 18%, and even more preferably 5 to 15%. This range is more preferable because it provides easier removal of the cosmetic film and better shape retention.

[0034] (oil phase thickener) The present invention may further contain component (E), an oil phase thickener. Component (E) of the present invention adjusts the viscosity of the oil phase by thickening. However, component (E) of the present invention does not include component (B). Component (E) of the present invention is not particularly limited as long as it is a component typically used in cosmetics, and any component commonly used in cosmetics can be used. Examples include waxes other than component (B), such as hydrocarbon waxes and silicone waxes, dextrin fatty acid esters (excluding dextrin isostearate of component (D)), sucrose fatty acid esters, organically modified clay minerals, fumed silica, fatty acids or salts thereof, and the like, and one or more of these may be used. In the present invention, from the viewpoints of the prevention of clumping and bundling, shape retention, and volume effect, one or more selected from the group consisting of hydrocarbon wax, dextrin fatty acid ester, sucrose fatty acid ester, organically modified clay mineral, fumed silica, and fatty acid or salt thereof are preferred, one or more selected from the group consisting of hydrocarbon wax, dextrin fatty acid ester, sucrose fatty acid ester, organically modified clay mineral, and fumed silica are more preferred, and one or more selected from the group consisting of dextrin fatty acid ester, organically modified clay mineral, and fumed silica are even more preferred. Furthermore, although component (E) can be used alone, from the viewpoints of the prevention of clumping and bundling, shape retention, and volume effect, it is preferable to use two or more in combination, and more preferably three or more in combination.

[0035] (Waxes other than component (B)) Any wax other than component (B) in the present invention can be used as long as it is typically used in cosmetics. Examples include hydrocarbon waxes such as polyethylene wax, paraffin wax, ceresin wax, ozokerite wax, microcrystalline wax, hydrogenated microcrystalline wax, Fischer-Tropsch wax, (ethylene / propylene) copolymer, and silicone waxes such as (eicosene / vinylpyrrolidone) copolymer, long-chain alkoxy-modified silicone, and long-chain alkyl-modified silicone (e.g., stearyl dimethicone), and these can be used alone or in combination of two or more.

[0036] Among these, from the viewpoints of preventing clumping and bunching, shape retention, and volume effect, one or more waxes selected from the group consisting of hydrocarbon waxes and silicone waxes are preferred, one or more waxes selected from the group consisting of polyethylene wax, paraffin wax, microcrystalline wax, Fischer-Tropsch wax, (ethylene / propylene) copolymer, and stearyl dimethicone are more preferred, and one or more waxes selected from the group consisting of polyethylene wax, paraffin wax, microcrystalline wax, and stearyl dimethicone are even more preferred.

[0037] The content of waxes other than component (B) in the present invention is not particularly limited, but is preferably 1% or more, more preferably 3% or more, and even more preferably 5% or more, based on the total amount of the cosmetic for oily keratin fibers. It is also preferably 11% or less, more preferably 8% or less, and even more preferably 5% or less. It is also preferably 0.1 to 11%, more preferably 0.5 to 8%, and even more preferably 1 to 5%. This range is more preferable because it provides superior clumping and bundling prevention, shape retention, and volume effects.

[0038] (dextrin fatty acid ester) The dextrin fatty acid ester of the present invention is an ester of a fatty acid and dextrin. However, dextrin isostearate used in the film-forming agent described above as component (D) is excluded from the dextrin fatty acid esters listed as component (E). The fatty acid may be a straight-chain or branched fatty acid, saturated or unsaturated. While the fatty acid is not particularly limited, from the viewpoints of clumping prevention, shape retention, and volume effect, the number of carbon atoms in the fatty acid is preferably 8 to 22, more preferably 12 to 18, and even more preferably 14 to 18. Examples of such fatty acids include, but are not limited to, ethylhexanoic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, and behenic acid, and one or more of these may be used. Meanwhile, the dextrin is not particularly limited as long as it is suitable for use in cosmetics, and may be straight-chain, branched, or cyclic. Examples of dextrin fatty acid esters include dextrin myristate, dextrin palmitate, dextrin (palmitate / 2-ethylhexanoate), dextrin stearate, and dextrin oleate, and one or more of these can be used.

[0039] In the present invention, from the viewpoints of preventing clumping and bundling, shape retention, and volume effect, the dextrin fatty acid ester is preferably an ester of a fatty acid having 8 to 22 carbon atoms with dextrin, more preferably one or more selected from the group consisting of dextrin myristate, dextrin palmitate, and (palmitic acid / 2-ethylhexanoic acid) dextrin, even more preferably one or more selected from the group consisting of dextrin palmitate and (palmitic acid / 2-ethylhexanoic acid) dextrin, and most preferably dextrin palmitate.

[0040] The content of the dextrin fatty acid ester in the present invention is not particularly limited, but is preferably 0.1% or more, more preferably 0.5% or more, and even more preferably 1% or more, based on the total amount of the cosmetic for oily keratin fibers. It is also preferably 11% or less, more preferably 8% or less, and even more preferably 5% or less. It is also preferably 0.1 to 11%, more preferably 0.5 to 8%, and even more preferably 1 to 5%. This range is more preferable because it provides superior clumping and bundling prevention, shape retention, and volume effects.

[0041] (sucrose fatty acid esters) The sucrose fatty acid ester of the present invention is an ester of sucrose and a fatty acid. The fatty acid in the sucrose fatty acid ester of the present invention is preferably a fatty acid having 14 to 20 carbon atoms, and either linear or branched, saturated or unsaturated fatty acids can be used. Examples include sucrose myristate, sucrose palmitate, sucrose stearate, sucrose oleate, sucrose isostearate, sucrose polystearate, and sucrose acetate stearate, and one or more of these can be used. Among these, one or two selected from the group consisting of sucrose polystearate and sucrose acetate stearate are preferred from the viewpoints of clumping / bundling prevention, shape retention, and volume effect.

[0042] The content of the sucrose fatty acid ester in the present invention is not particularly limited, but is preferably 0.1% or more, more preferably 0.5% or more, and even more preferably 1% or more, based on the total amount of the cosmetic for oily keratin fibers. It is also preferably 11% or less, more preferably 8% or less, and even more preferably 5% or less. It is also preferably 0.1 to 11%, more preferably 0.5 to 8%, and even more preferably 1 to 5%. This range is more preferable because it provides superior clumping and bundling prevention, shape retention, and volume effects.

[0043] (organically modified clay minerals) The organically modified clay mineral of the present invention is one in which the interlayer metal ions of the clay mineral have been substituted with cations such as quaternary alkyl ammonium ions. The organically modified clay mineral of the present invention is not particularly limited as long as it is one generally used in cosmetics, and any can be used. Specifically, it can be obtained by ion-exchanging a layered clay mineral with a cationic surfactant such as an alkyl quaternary ammonium salt. Examples include those exchanged with benzyl dimethyl stearyl ammonium ions and those exchanged with dimethyl distearyl ammonium ions. The layered clay mineral is a type of colloidal hydrous aluminum silicate having a three-layer structure, and examples thereof include those represented by the following general formula (1): (X,Y) 2-3 (Si,Al)O 10 (OH)2Z·nH2O···(1) In the formula: X=Al,Fe,Mn,Cr Y = Mg, Fe, Ni, Zn, Li Z=K, Na, Ca Specific examples include natural or synthetic montmorillonites such as montmorillonite, laponite, and hectorite (in which (OH) in the above general formula is substituted with fluorine), as well as synthetic micas known as sodium silicic mica and sodium or lithium taeniolite, with montmorillonite and hectorite being particularly preferred in terms of lack of clumping, shape retention, and volume effect.

[0044] Specific examples of the alkyl group in the alkyl quaternary ammonium salt or the like used as the cationic surfactant for ion exchange of the layered clay mineral include methyl, ethyl, propyl, isopropyl, butyl, amyl, hexyl, heptyl octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, and octadecyl.

[0045] The method for modifying the clay mineral is not particularly limited, but examples include adding a quaternary alkylammonium salt to a suspension of the clay mineral dispersed in water and thoroughly mixing, or adding a clay mineral suspension to a quaternary alkylammonium salt solution and thoroughly mixing. The modification reaction proceeds satisfactorily at room temperature, but heating may be performed if necessary. The maximum temperature when heating is determined by the heat resistance of the quaternary alkylammonium salt used and can be set at any temperature below its decomposition point. The solid-liquid separation is then performed, and the product is washed with water to thoroughly remove by-product electrolytes. The product is then dried and, if necessary, pulverized for use. The amount of quaternary alkylammonium salt added to modify the clay mineral is preferably equivalent to the cation exchange capacity of the clay mineral in terms of quaternary alkylammonium ions. More specifically, the amount of quaternary alkylammonium salt added relative to the cation exchange capacity of the clay mineral is preferably 0.5 to 1.5 times (molar equivalent), and even more preferably 0.8 to 1.4 times (molar equivalent).

[0046] Commercially available organically modified clay minerals for use in the present invention include, for example, dimethyl distearyl ammonium hectorite BENTONE 38V BC (manufactured by Elementis Co., Ltd.), Sumecton SAN (manufactured by Kunimine Industries Co., Ltd.), Sumecton SAN-P (manufactured by Kunimine Industries Co., Ltd.), and benzyl dimethyl stearyl ammonium hectorite BENTONE 27V (manufactured by Elementis Co., Ltd.).

[0047] The content of the organically modified clay mineral in the present invention is not particularly limited, but is preferably 1% or more, more preferably 3% or more, and even more preferably 5% or more, based on the total amount of the cosmetic for oily keratin fibers. It is also preferably 12% or less, more preferably 10% or less, and even more preferably 8% or less. It is also preferably 1 to 12%, more preferably 3 to 10%, and even more preferably 5 to 8%. This range is more preferable because it provides superior clumping and bundling prevention, shape retention, and volume effects.

[0048] (fumed silica) The fumed silica of the present invention is amorphous silica having an average particle size of 50 nm or less. The inclusion of fumed silica is preferred because it provides superior stability over time. The fumed silica is not particularly limited as long as it is one commonly used in cosmetics, but examples include silica obtained by hydrolyzing silicon tetrachloride in an oxyhydrogen flame. The primary particle size of the fumed silica of the present invention is preferably 30 nm or less, and more preferably 20 nm or less, from the viewpoints of preventing clumping and clumping, shape retention, and volume effects. The particle size distribution of the primary particles can be determined from electron microscope photographs. The fumed silica may also be hydrophobized. Examples of such treatments include dimethylsilylation treatment with dimethyldichlorosilane, trimethylsiloxy treatment with trimethylsilyl chloride or hexamethyldisilazane, octylsilanization treatment, coating and baking treatment using methylhydrogenpolysiloxane, and coating with metal soap. In the present invention, from the viewpoints of preventing clumping and bunching, shape retention effect, and volume effect, hydrophobically treated fumed silica is preferred, and dimethylsilylated fumed silica is more preferred.

[0049] The content of fumed silica in the present invention is not particularly limited, but is preferably 0.1% or more, more preferably 0.3% or more, and even more preferably 0.5% or more, based on the total amount of the cosmetic for oily keratin fibers. It is also preferably 11% or less, more preferably 8% or less, and even more preferably 5% or less. It is also preferably 0.1 to 11%, more preferably 0.3 to 8%, and even more preferably 0.5 to 5%. This range is more preferable because it provides superior clumping and clumping prevention, shape retention, and volume effects.

[0050] (fatty acid or its salt) The fatty acid or salt thereof used in the present invention is not particularly limited as long as it is one that is commonly used in cosmetics, and any fatty acid or salt thereof can be used. Specifically, fatty acids that are solid at room temperature can be used, such as lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, and 12-hydroxystearic acid. Examples of fatty acid salts include calcium salts, magnesium salts, aluminum salts, and zinc salts of the above fatty acids. Among these, fatty acids having 12 to 22 carbon atoms or salts thereof are preferred from the viewpoints of clumping prevention, shape retention, and volume effect, and one or more fatty acids or salts thereof selected from the group consisting of palmitic acid, stearic acid, and behenic acid are more preferred.

[0051] The content of the fatty acid or its salt in the present invention is not particularly limited, but is preferably 0.1% or more, more preferably 0.3% or more, and even more preferably 0.5% or more, based on the total amount of the cosmetic for oily keratin fibers. It is also preferably 11% or less, more preferably 8% or less, and even more preferably 5% or less. It is also preferably 0.1 to 11%, more preferably 0.3 to 8%, and even more preferably 0.5 to 5%. This range is more preferable because it provides superior clumping and bundling prevention, shape retention, and volume effects.

[0052] The content of component (E) in the present invention is not particularly limited, but is preferably 1% or more, more preferably 3% or more, and even more preferably 5% or more, based on the total amount of the cosmetic for oily keratin fibers. It is also preferably 20% or less, more preferably 18% or less, and even more preferably 15% or less. It is also preferably 1 to 20%, more preferably 3 to 18%, and even more preferably 5 to 15%. This range is more preferable because it provides superior clumping and bundling prevention, shape retention, and volume effects.

[0053] In addition to the above-mentioned components (A) to (E), the cosmetic composition for oily keratin fibers of the present invention may contain components commonly used in cosmetics, such as oily components other than components (B), (C), and (E), powders, surfactants, fibers, alcohols, water-soluble polymers, aqueous components such as moisturizers, sugars, antioxidants, antifoaming agents, cosmetic ingredients, preservatives, fragrances, etc., within a range that does not impair the effects of the present invention.

[0054] In the present invention, the oily components other than components (B), (C), and (E) are not particularly limited as long as they are those typically used in cosmetics, and may be in any form, such as solid, paste, liquid, etc. Examples of such oily components in solid form include higher alcohols such as behenyl alcohol, cetyl alcohol, and stearyl alcohol. Examples of paste-like oily components include hydrocarbons such as petrolatum, esters such as diglyceryl adipate mixed fatty acid esters, phytosterol fatty acid esters, dipentaerythrityl hexa(hydroxystearate / stearic acid / rosinate), lanolin, isopropyl lanolinate, octyldodecyl lanolinate, phytosteryl / isostearyl / cetyl / stearyl / behenyl dimer dilinoleate, di(octyldodecyl / phytosteryl / behenyl) lauroyl glutamate, hydrogenated castor oil fatty acid esters, and phytosteryl macadamia nut oil fatty acid. Examples of liquid oily components include hydrocarbons such as liquid paraffin, heavy liquid isoparaffin, squalane, polyisobutylene, and polybutene; fats and oils such as olive oil, castor oil, jojoba oil, mink oil, and macadamia nut oil; isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, glyceryl trioctanoate, diglyceryl diisostearate, diglyceryl triisostearate, diisostearyl malate, propylene glycol dicaprate, cetyl 2-ethylhexanoate, 2-ethylhexyl hydroxystearate, pentaerythrityl tetraisostearate, and stearic acid. ester oils such as octyldodecyl lauroyloxystearate, dimer dilinoleyl hydrogenated rosin condensate, di(phytosteryl / octyldodecyl) lauroyl glutamate, and 2-ethylhexyl paramethoxycinnamate; fatty acids such as isostearic acid and oleic acid; higher alcohols such as lauryl alcohol, oleyl alcohol, isostearyl alcohol, octyldodecanol, and decyltetradecanol; silicone oils such as dimethylpolysiloxane, methylphenylpolysiloxane, and dimethiconol; and fluorine-based oils such as perfluorodecane, perfluorooctane, and perfluoropolyether.

[0055] In the present invention, "oily" refers to a composition having oil as a continuous phase and substantially not containing water. Here, "substantially not containing water" means that the composition does not contain any water at all, or even if it does contain water, the amount is so small that it does not affect the present invention. The water content is, for example, preferably less than 5%, more preferably less than 1%, and even more preferably less than 0.1%.

[0056] The cosmetic composition for oily keratin fibers of the present invention can be produced by a conventional method, for example, by heating and mixing components (A) to (C), and optionally components (D) and (E), to a temperature equal to or higher than the melting point of component (B) (e.g., 100°C), but is not limited to this production method.

[0057] The cosmetic composition for oily keratin fibers of the present invention is not particularly limited, and may be in any form, such as liquid, solid, or cream.

[0058] The cosmetic composition for oily keratin fibers of the present invention is not particularly limited as long as it is used for keratin fibers, and examples thereof include eyelash cosmetics such as mascara, eyebrow cosmetics such as eyebrow creams, hair cosmetics such as hair styling agents, hair colorants, etc. Among these, eyelash cosmetics are preferred, and mascara is more preferred. [Example]

[0059] The present invention will be explained in detail below with reference to production examples and comparative production examples of component (A) of the present invention, as well as working examples, but these are not intended to limit the present invention in any way.

[0060] <Production Example of Alkyl Acrylate / Vinyl Acetate Copolymer> Production Example 1: Stearyl acrylate / vinyl acetate copolymer (molar ratio 25:75) A 1-liter four-neck flask equipped with a reflux condenser, thermometer, nitrogen purge tube, and stirrer was used as the reaction vessel. 80 parts by mass of 2-propanol was charged into the reaction vessel, and the temperature was raised under a nitrogen stream. When the temperature inside the reaction vessel reached 70°C, 1 part by mass of 2,2'-azobisisobutyronitrile was added as a polymerization initiator. While maintaining the internal temperature at 70°C, a mixture of 55.7 parts by mass of stearyl acrylate and 44.3 parts by mass of vinyl acetate was fed into the reaction vessel. After the monomers were fed, the internal temperature was maintained at 70°C for 2 hours to allow the polymerization reaction to proceed. Next, the 2-propanol was removed from the reaction vessel by distillation, and the mixture was dried under reduced pressure to obtain a copolymer solid. The resulting copolymer had a weight-average molecular weight of 8,000. The weight-average molecular weight of the copolymer was measured by gel permeation chromatography (GPC). Molecular weight measurement by gel permeation chromatography can be performed, for example, under the following conditions.

[0061] GPC equipment: Prominence HPLC system (Shimadzu Corporation) Column: KF-805, KF-803, KF-801 (series) (Showa Denko K.K.) Mobile phase: tetrahydrofuran Flow rate: 1mL / min Detector: Differential refractive index detector Temperature: 40℃ Molecular weight standard: polystyrene

[0062] Production Example 2: Isostearyl acrylate / vinyl acetate copolymer (molar ratio 25:75) A copolymer was obtained in accordance with Production Example 1, except that stearyl acrylate, the monomer to be polymerized in Production Example 1, was changed to isostearyl acrylate. The resulting copolymer had a weight average molecular weight of 7,000.

[0063] Production Example 3: Lauryl acrylate / vinyl acetate copolymer (molar ratio 25:75) A copolymer was obtained in accordance with Production Example 1, except that lauryl acrylate was used instead of stearyl acrylate as the monomer to be polymerized in Production Example 1. The resulting copolymer had a weight average molecular weight of 7,400.

[0064] Production Example 4: Stearyl acrylate / vinyl acetate copolymer (molar ratio 15:85) A copolymer was obtained in accordance with Production Example 1, except that the amounts of stearyl acrylate and vinyl acetate used were changed to 39.9 parts by mass and 60.1 parts by mass, respectively. The resulting copolymer had a weight-average molecular weight of 8,000.

[0065] Production Example 5: Stearyl acrylate / vinyl acetate copolymer (molar ratio 35:65) A copolymer was obtained in accordance with Production Example 1, except that the amounts of stearyl acrylate and vinyl acetate used were changed to 66.9 parts by mass and 33.1 parts by mass, respectively. The resulting copolymer had a weight-average molecular weight of 8,500.

[0066] Production Example 6 (Comparative Production Example): Stearyl acrylate / vinyl acetate copolymer (molar ratio 10:90) A copolymer was obtained in accordance with Production Example 1, except that the amounts of stearyl acrylate and vinyl acetate used were changed to 29.5 parts by mass and 70.5 parts by mass, respectively. The resulting copolymer had a weight-average molecular weight of 7,800.

[0067] Production Example 7 (Comparative Production Example): Stearyl acrylate / vinyl acetate copolymer (molar ratio 50:50) A copolymer was obtained in accordance with Production Example 1, except that the amounts of stearyl acrylate and vinyl acetate used were changed to 79.0 parts by mass and 21.0 parts by mass, respectively. The resulting copolymer had a weight-average molecular weight of 7,700.

[0068] Examples 1 to 29 and Comparative Examples 1 to 8: Oil-based mascara Oil-based mascaras with the formulations shown in Tables 1 to 4 below were prepared using the manufacturing methods described below, and evaluated for (i) clumping and clumping, (ii) ease of removal of the cosmetic film, (iii) shape retention, and (iv) volume using the evaluation methods described below. The results are also shown in Tables 1 to 4.

[0069] [Table 1]

[0070] *1: Nissetsu U-3712A (45% solids, manufactured by Nippon Carbide Industries Co., Ltd.) *2: Vinizol 2140L (solid content 43%, manufactured by Daido Chemical Industry Co., Ltd.) *3: Vinybran GV-5651 (solid content 36%, manufactured by Nissin Chemical Industry Co., Ltd.) *4: Yodosol GH800F (45% solids, manufactured by Akzo Nobel) *5: Carnauba wax (Machado Chemical Company) *6: Rice Wax SS-I (manufactured by Boso Oil Co., Ltd.) *7: Refined Candelilla Wax SR-3 (Nippon Natural Products Co., Ltd.) *8: SUPER REFINED BEESWAX (manufactured by Croda Japan) *9: Synthetic wax P-200 (manufactured by Nippon Natural Products Co., Ltd.) *10: SR1000 (Momentive Performance Materials) *11: Estergum HP (manufactured by Arakawa Chemical Industries, Ltd.) *12: Pine Crystal KE-311 (manufactured by Arakawa Chemical Industries, Ltd.) *13: Leopard KL2 (manufactured by Chiba Flour Mills) *14: Sumecton SAN-P (manufactured by Kunimine Industries) *15: AEROSIL R976S (manufactured by Nippon Aerosil Co., Ltd.) *16: Sugar Wax A-10E (Daiichi Kogyo Seiyaku Co., Ltd.)

[0071] [Table 2]

[0072] [Table 3]

[0073] [Table 4]

[0074] (Manufacturing method) A: Heat ingredients 1 to 26 to 100°C and mix evenly. B: Cool A to 25°C, and while maintaining the temperature at 25°C, add ingredients 27 to 32 and mix uniformly. C: B was filled into a container to obtain a cosmetic for oily keratin fibers.

[0075] (Evaluation method) A 20-member cosmetic evaluation panel conducted a usability test for each sample for the following items A to D. All panel members applied each sample to their eyelashes and scored each item A to D on a 5-point scale according to the following evaluation criteria and the absolute evaluation criteria. The average score was calculated from the total scores of all panel members and judged according to the following criteria.

[0076] (Evaluation items): (Evaluation viewpoint) A. No clumping or clumping: Does it adhere evenly to the eyelashes without clumping or clumping after the first application? B. Ease of removing makeup film: Six hours after application, the makeup was removed using a cotton pad soaked in 2 mL of a commercially available oil cleanser (product name: Cosme Decorte Lift Dimension Smoothing Cleansing Oil, manufactured by Kose Corporation). Check whether the makeup could be removed without applying force. C. Shape retention: Whether the curl of the eyelashes is maintained 6 hours after application 2. Volume effect: After application, does it make each eyelash appear thicker and darker?

[0077] <Absolute evaluation criteria> (Rating): (Evaluation) 5: Very good 4: Good 3: Normal 2: Bad 1: Very bad <Judgment criteria> (Judgment): (Evaluation) ◎: Higher than 4.2 ○: Higher than 3.5 points and lower than 4.2 points △: More than 2.5 points and less than 3.5 points ×: 2.5 points or less

[0078] As is clear from the results in Tables 1 to 4, the cosmetics for oily keratin fibers of Examples 1 to 29 of the present invention were excellent in terms of clumping / bundling resistance, ease of cosmetic film removal, shape retention, and volume effect. On the other hand, Comparative Example 1, in which the copolymer of Production Example 6 was used instead of component (A), did not provide satisfactory results in terms of clumping / bundling resistance and shape retention. Comparative Example 2, in which the copolymer of Production Example 7 was used instead of component (A), did not provide satisfactory results in terms of ease of cosmetic film removal and shape retention. Comparative Example 3, in which an oil-based emulsion of alkyl acrylate / vinyl acetate copolymer was used instead of component (A), did not provide satisfactory results in terms of clumping / bundling resistance and shape retention. Comparative Example 4, in which an aqueous emulsion of (acrylates / VA) copolymer was used instead of component (A), did not provide satisfactory results in terms of clumping / bundling resistance and volume effect. Comparative Example 5, in which polyvinyl acetate was used, did not provide satisfactory results in terms of clumping / bundling resistance, shape retention, and volume effect. Furthermore, Comparative Example 6, which used an acrylate copolymer, failed to provide satisfactory results in terms of clumping / bundling prevention, shape retention, and volume effect. Comparative Example 7, which used polyethylene wax instead of component (B), failed to provide satisfactory results in terms of shape retention. Comparative Example 8, which contained an (ethylene / propylene) copolymer instead of component (B), failed to provide satisfactory results in terms of shape retention.

[0079] Example 30: Oil-based liquid mascara cosmetic (fiber type) (Component) (%) 1. Hydrogenated polyisobutene*17 remaining amount 2. Polymethylsilsesquioxane*18 10 3. Stearyl acrylate / vinyl acetate copolymer 7 of Production Example 1 4. Candelilla wax (melting point 72°C) *7 3 5. Beeswax (melting point 63℃)*8 6 6. Carnauba wax (melting point 83℃)*5 1 7. Hydrogenated Glyceryl Abietate*12 2 8. Dextrin palmitate*19 4 9. Polypropylene fiber (5T, 2mm) 0.5 10. Phospholipid-treated rayon fiber (5T, 1mm) 1 11. Nylon 66 fiber (17T, 2mm) 1 12. PET fiber (6.3T, 2mm) 1 13. Dimethicone-treated cellulose fiber (6T, 2mm) 1 14. Black Iron Oxide 8 15. Propylene Carbonate 1 16. Dimethyl distearyl ammonium hectorite*20 4 17. Spherical silica (average particle size 16 μm) 1 18. N-Lauroyl-L-Lysine 3 19. Talc 3 20. Ethylhexylglycerin 0.2 21. Chlorphenesin 0.1 22. Lemon Fruit Extract 0.1 23. Tocopherol 0.1 24. Apricot kernel oil 0.1 25. Olive fruit oil 0.1 26. Squalane 0.5 27. Dipropylene glycol 0.5 28. Decamethylcyclopentasiloxane*21 5 29. Glyceryl tri-2-ethylhexanoate 0.8 30. Sunflower seed oil 0.1 31. Sesame seed oil 0.1 *17: IP Solvent 1620MU (Idemitsu Kosan Co., Ltd.) *18:SILFORM FLEXIBLE RESIN (manufactured by Momentive) *19: Leopard TL2 (manufactured by Chiba Flour Mills) *20: BENTONE 38V BC (manufactured by Elementis) *21: KF-995 (Shin-Etsu Chemical Co., Ltd.)

[0080] (Manufacturing method) A: Heat ingredients 1 to 8 to 100°C and mix evenly. B: Cool A to 25°C, and while maintaining the temperature at 25°C, add ingredients 9 to 31 and mix uniformly. C: B was filled into a container to obtain an oil-based liquid mascara cosmetic (fiber-containing type).

[0081] The oily liquid mascara (fiber type) of Example 30 of the present invention was excellent in clump-free and clump-free, easy to remove makeup film, shape-retaining effect, and volume effect.

[0082] Example 31: Oily liquid eyebrow cosmetic (Component) (%) 1. Isododecane remaining amount 2. Lauryl acrylate / vinyl acetate copolymer of Production Example 3 10 3. Trimethylsiloxysilicate*10 2.5 4. Trifluoropropyldimethyltrimethylsiloxysilicate*22 4 5. Rice bran wax (melting point 79°C) *6 5 6. Beeswax (melting point 63℃)*8 8 7. Carnauba wax (melting point 83℃) *5 1 8. Microcrystalline wax (melting point 79°C) *23 2 9. Hydrogenated lecithin 0.3 10. Dextrin Isostearate*24 0.5 11. Dextrin myristate*25 2 12. Dimethiconol (100,000 mPa·s) 3 13. Peach kernel oil 0.5 14. Corn oil 0.1 15. Almond oil 0.2 16.BHT 0.1 17. Paraffin (melting point 56℃) *26 1 18. Phenoxyethanol 0.5 19. Rosa canina fruit oil 0.1 20. Quaternium-18 Hectorite*14 4 21. Fumed Silica*27 1.5 22. Black Iron Oxide 2 23. Bengala 1.5 24. Yellow Iron Oxide 1.5 25. N-Lauroyl-L-Lysine 0.5 26. Spherical silicone powder (average particle size 5 μm) 0.5 27. Mica 5 28. Boron nitride (average particle size 6 μm) 1 29. Spherical cellulose (average particle size 5 μm) 2 *22: XS66-B8226 (Momentive Performance Materials, 50% solids cyclomethicone solution) *23:MULTIWAX W445 (SONNEBORN company system) *24: Unifilma HVY (manufactured by Chiba Flour Mills) *25: Leopard MKL2 (manufactured by Chiba Flour Mills) *26:PARACERA256 (manufactured by PARAMELT) *27: AEROSIL 300 (manufactured by Nippon Aerosil Co., Ltd.)

[0083] (Manufacturing method) A: Heat ingredients 1 to 12 to 100°C and mix evenly. B: Cool A to 25°C, and while maintaining the temperature at 25°C, add ingredients 13 to 29 and mix uniformly. C: B was filled into a container with an applicator to obtain an oily liquid eyebrow cosmetic.

[0084] The oily liquid eyebrow cosmetic of Example 31 of the present invention was excellent in terms of clump-free and clump-free, easy removal of the cosmetic film, shape-retaining effect, and volume effect.

[0085] Example 32: Oily solid eyebrow cosmetic (Component) (%) 1. Beeswax (melting point 63℃) *8 5 2. Sunflower seed wax (melting point 76°C) *28 4 3. Carnauba wax (melting point 83℃) *5 13 4. Isostearyl acrylate / vinyl acetate copolymer of Production Example 2 10 5. Trimethylsiloxysilicate*10 3 6. Light liquid isoparaffin*17 remaining amount 7. Dextrin palmitate*13 5 8. Polymethylsilsesquioxane*18 2 9. Phenylglycol 1 10. EDTA-2Na 0.01 11. Liquid paraffin 0.5 12. Phytosteryl / Octyldodecyl Lauroyl Glutamate 0.4 13. Dimer dilinoleyl hydrogenated rosin condensate *29 0.3 14. Hexa(hydroxystearic acid / stearic acid / rosin acid) Dipentaerythrityl 0.5 15. Quaternium-18 Hectorite*14 4 16. Propylene Carbonate 1 17. Methyl methacrylate crosspolymer (average particle size 7 μm) 2 18. Carbon Black 1 19. Silicone 2% treated red iron oxide 1.3 20. Silicone 2% treated yellow iron oxide 2 21. Sericite 5 22. Silylated Silica Anhydrous*15 2 23. Natural Vitamin E 0.1 24. Jojoba seed oil 0.1 25.Shea butter 0.1 26. Dimethicone*30 2 27. Phytosteryl Oleate 0.1 28. Tridecyl Trimellitate 1 29. (Eicosene / vinylpyrrolidone) copolymer*31 0.5 30. Orange peel oil 0.01 31. Sesame oil 0.01 32. Niacinamide 0.01 33. Honey 0.01 34. 2-Decyltetradecanol 3 *28: Refined sunflower wax (manufactured by Yokoseki Oil & Fat Industries Co., Ltd.) *29:LUSPLAN DD-DHR (manufactured by Nippon Fine Chemicals) *30: KF-96-2CS (Shin-Etsu Chemical Co., Ltd.) *31:ANTARON V-220F (manufactured by ASHLAND SPECIALITY INGREDIENS)

[0086] (Manufacturing method) A: Heat ingredients 1 to 8 to 100°C and mix evenly. B: Cool A to 65°C, and while maintaining the temperature at 65°C, add ingredients 9 to 34 and mix uniformly. C: B was filled into a container and cooled to 25°C to solidify, thereby obtaining an oily solid eyebrow cosmetic.

[0087] The oily solid eyebrow cosmetic of Example 32 of the present invention was free from clumping and clumping, easy to remove, had excellent shape retention, and provided volume.

[0088] Example 33: Oily paste-like hair wax cosmetic (Component) (%) 1. Paraffin (melting point 56°C) *26 3 2. Vaseline 15 3. Carnauba wax (melting point 83℃) *5 7 4. Microcrystalline wax (melting point 80℃) *23 3 5. Beeswax (melting point 63℃) *8 3 6. Stearyl acrylate / vinyl acetate copolymer 8 of Production Example 5 7. Trimethylsiloxysilicate*10 5 8. Isododecane remaining 9. 1,3-butylene glycol 1.5 10. Methyl parahydroxybenzoate 0.1 11. Stearalkonium Hectorite*32 5 12. Propylene Carbonate 1 13. Polyethylene glycol monostearate (10.EO) (HLB11.0) 0.5 14. Stearic Acid 2 15. Dibutylhydroxytoluene 0.1 16. Di(octyldodecyl) / Phytosteryl Lauroyl Glutamate / Behenyl) 0.01 17. Talc 6 18. Mica 5 19.Polyethylene powder (average particle size 10 μm)*33 1 20. Olive fatty acid ethyl ester 0.1 21. Tocopheryl acetate 0.1 22. Apricot kernel oil 0.1 23. Safflower oil 0.1 24. Jojoba seed oil 0.1 25. Kukui nut oil 0.1 26. Olive oil 0.1 *32: BENTONE 27V (manufactured by Elementis) *33: Mipelon PM-200 (Mitsui Chemicals)

[0089] (Manufacturing method) A: Heat ingredients 1 to 6 to 90°C and mix evenly. B: Cool A to 65°C, and while maintaining the temperature at 65°C, add ingredients 7 to 26 and mix uniformly. C: B was filled into a container and cooled to 25°C to obtain an oily paste-like hair wax cosmetic.

[0090] The oily paste-like hair wax cosmetic of Example 33 of the present invention was excellent in terms of clump-free and clump-free, easy removal of the cosmetic film, shape retention effect, and volume effect.

[0091] Example 34: Oily stick-type hair wax cosmetic (Component) (%) 1,2-Cetyl ethylhexanoate 15 2. Diisostearyl malate 15 3. Carnauba wax (melting point 83℃) *5 9 4. Microcrystalline wax (melting point 80℃) *23 3 5. Beeswax (melting point 63℃) *8 3 6. Polyethylene (melting point 88°C) *9 2 7. Stearyl acrylate / vinyl acetate copolymer of Production Example 5 7 8. Isododecane*34 remaining 9. Polyethylene glycol monostearate (10.EO) (HLB11.0) 1.5 10. Glyceryl stearate (HLB 6.0) 1.5 11. Dibutylhydroxytoluene 0.1 12. Trimethylsiloxysilicate*10 5 13.Hydrogenated Rosin Acid Pentaerythrityl*11 3 14. Talc 1 15. Mica 2 16. Silica anhydride (spherical, average particle size 8 μm) 5 17. Olive fatty acid ethyl ester 0.1 18. Tocopherol 0.1 19. Ethylhexyl methoxycinnamate 0.1 20. Moringa oleifera seed oil 0.1 21. Jojoba seed oil 0.1 22. Kukui nut oil 0.1 23. 1,3-butylene glycol 0.2 24. Dipropylene glycol 0.5 *34: ISODODECANE (IMCD)

[0092] (Manufacturing method) A: Heat ingredients 1 to 24 to 95°C and mix evenly. B: A was filled into a container and cooled to 25°C to obtain an oily stick-type hair wax cosmetic.

[0093] The oily stick-type hair wax cosmetic of Example 34 of the present invention was excellent in terms of clump-free and clump-free, easy removal of the cosmetic film, shape retention effect, and volume effect.

[0094] Example 35: Oily paste-like color hair wax cosmetic (Component) (%) 1. Paraffin (melting point 56℃) *26 4 2. Vaseline 10 3. Carnauba wax (melting point 83°C) *5 5 4. Candelilla wax (melting point 72°C) *7 5 5. Beeswax (melting point 63℃) *8 5 6. Stearyl acrylate / vinyl acetate copolymer 8 of Production Example 5 7. Isododecane*34 remaining amount 8. Tripropylene glycol 1 9. Methyl parahydroxybenzoate 0.1 10. Sorbitan sesquistearate (HLB 4.2) 1 11. PEG-30 dipolyhydroxystearate (HLB 5.0) 1 12. Polysorbate 60 (HLB 14.9) 1 13. Dibutylhydroxytoluene 0.1 14. Dimer Dilinoleic Acid (Phytosteryl / Isostearyl) / Cetyl / Stearyl / Behenyl) 0.1 15.2% Silicone-treated Talc 3 16. Synthetic Fluorphlogovite 2 17. Microcrystalline cellulose (average particle size 20 μm) 5 18. Black Iron Oxide 1 19. Red No. 202 1 20. Yellow No. 4 0.8 21. Olive oil 0.1 22. Ethyl oleate 0.1 23. Rosehip oil 0.1 24. Camellia oil 0.1 25. Corn oil 0.1 26. Jojoba oil 0.1 27. Polyethylene (melting point 88°C) *9 3.5 28. Dextrin (Palmitic acid·2-ethylhexanoate)*35 2.5 29. Polymethylsilsesquioxane*18 2 30. Trifluoropropyldimethyltrimethylsiloxysilicate*22 3 *35: Leopard TT2 (manufactured by Chiba Flour Mills)

[0095] (Manufacturing method) A: Heat ingredients 1 to 6 and ingredients 27 to 30 to 90°C and mix uniformly. B: Cool A to 65°C, and while maintaining the temperature at 65°C, add ingredients 7 to 26 and mix uniformly. C: B was poured into a container and cooled to 25°C to obtain an oily paste-like color hair wax cosmetic.

[0096] The oily paste-like color hair wax cosmetic of Example 35 of the present invention was excellent in terms of clump-free and clump-free, easy removal of the cosmetic film, shape retention, and volume effect.

Claims

1. The following components (A) to (C): (A) An alkyl acrylate / vinyl acetate copolymer that satisfies the following conditions (1) and (2): (1) The molar ratio of alkyl acrylate to vinyl acetate is 15:85 to 35:

65. (2) It dissolves when heated and mixed with isododecane at a mass ratio of 1:10 at 80°C. (B) Wax ester (C) Volatile oil The cosmetic for oily keratin fibers contains the above-mentioned formula (1), and component (A) is a stearyl acrylate / vinyl acetate copolymer.

2. 2. The cosmetic composition for oily keratin fibers according to claim 1, wherein said component (B) is one or more waxes selected from the group consisting of carnauba wax, beeswax, candelilla wax, sunflower seed wax, and rice bran wax.

3. 3. The cosmetic for oily keratin fibers according to claim 1, wherein the content of the component (A) is 0.5 to 25% by mass.

4. The cosmetic for oily keratin fibers according to any one of claims 1 to 3, wherein the mass ratio (A) / (B) of the component (A) to the component (B) is 0.05 to 10.

5. The cosmetic composition for oily keratin fibers according to any one of claims 1 to 4, further comprising a component (D) an oil-soluble film-forming agent (excluding the component (A)).

6. The cosmetic for oily keratin fibers according to any one of claims 1 to 5, further comprising a component (E) an oil phase thickener (excluding the component (B)).

7. 7. The cosmetic composition for oily keratin fibers according to claim 6, wherein the component (E) is one or more selected from the group consisting of hydrocarbon wax, dextrin fatty acid ester, sucrose fatty acid ester, organically modified clay mineral, fumed silica, and fatty acid or its salt.

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