Eyeliner cosmetics

Abstract

The present invention addressed the problem of developing an eyeliner cosmetic preparation which exhibits excellent long lasting properties, while being easy to remove with hot water when makeup is removed, and which is also excellent in terms of flexibility of a film, film forming properties, and application without blurring. An eyeliner cosmetic preparation according to the present invention, which has solved the above-described problem, is characterized by containing the following components (A) to (D): (A) (A-2) an alkyl acrylate / vinyl acetate copolymer dispersion that uses (A-1) a nonaqueous solvent as a dispersion medium; (B) a dextrin fatty acid ester; (C) a surface-hydrophobized powder; and (D) a volatile oil agent.

Description

[Technical Field]

[0001] The present invention relates to an eyeliner cosmetic. [Background technology]

[0002] Eyeliner cosmetics are cosmetics that emphasize the eyes and make them appear larger by drawing a line around the eye. Because they are used by drawing on the eye's contours, they are required to be easy to apply, allowing for a smooth line without smudging, to form a film that dries instantly, to last against smudging due to tears or sebum, and to form a flexible cosmetic film that does not crack with continuous eyelid movement. Furthermore, because the eye contour is a very delicate area, it is also important that the cosmetic film can be easily removed without rubbing too hard (ease of removal).

[0003] Eyeliner cosmetics are classified into oil-based and water-based types. Here, oil-based refers to non-aqueous or water-in-oil type eyeliner cosmetics, while water-based refers to eyeliners composed solely of oil-in-water or water-soluble components. Generally, oil-based types have the advantage of excellent makeup wear, while water-based types have the advantage of being easy to remove with warm water. Technologies have been developed to further improve the quality of both oil-based and water-based types while leveraging their respective advantages. For example, one technology uses a makeup cosmetic characterized by containing a non-aqueous polymer dispersion in which a polymer is dispersed in volatile silicone, thereby achieving a makeup-wearing effect that prevents makeup from smearing due to sweat, tears, sebum, etc. (see Patent Document 1). Another technology uses a makeup cosmetic containing a core-shell polymer emulsion, a water-containing oil agent, and a microcrystalline wax, with a mass ratio of the water-containing oil agent to the microcrystalline wax of 1:1 to 1:5, and also contains polyoxyethylene sorbitan beeswax, resulting in a waterproof makeup that can be washed off with warm water (see Patent Document 2). Furthermore, a formulation has been developed that provides excellent makeup staying power by including an eye cosmetic composition that contains 10.01 to 30% by mass of a silicone film-forming agent and 25 to 70% by mass of a volatile oil relative to the total amount of the eye cosmetic composition, with the volatile silicone oil being 25% by mass or more relative to the total amount of volatile oil, and with a hardness of 30 or more and 100 or less (see Patent Document 3). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 10-087435 [Patent Document 2] Japanese Patent Application Laid-Open No. 2010-265225 [Patent Document 3] Japanese Patent Application Publication No. 2017-218413 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0005] To provide an eyeliner cosmetic which has excellent makeup durability, is easy to remove with hot water, and is also excellent in film flexibility, film-forming properties, and lack of smearing when applied. [Means for solving the problem]

[0006] As a result of extensive research, the present inventors have developed an eyeliner cosmetic that combines an alkyl acrylate / vinyl acetate copolymer dispersion with a dextrin fatty acid ester, a hydrophobic surface-treated powder, and a volatile oil, which has excellent makeup durability while being easy to remove with warm water, and which also has excellent film flexibility, film-forming properties, and the ability to prevent smearing when applied.

[0007] That is, the present invention provides the following components (A) to (D): (A) (A-1) (A-2) Alkyl acrylate / vinyl acetate copolymer dispersion using a non-aqueous solvent as a dispersion medium (B) Dextrin fatty acid ester (C) Hydrophobic surface treated powder (D) Volatile oil The present invention relates to an eyeliner cosmetic containing the above. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide an eyeliner cosmetic that has excellent makeup durability, is easy to remove with hot water, and further has excellent film flexibility, film-forming properties, and does not smudge when applied. BEST MODE FOR CARRYING OUT THE INVENTION

[0009] The present invention will be described in detail below. In this specification, "to" means a range including the numerical values ​​before and after it, and "%" means mass % unless otherwise specified. Furthermore, the "average particle size" in this invention is the median diameter D50 value determined by measurement using an image analyzer (Luzex AP, manufactured by Nireco Corporation). In the case of asymmetric shapes, the median diameter D50 determined from the distribution of the largest particle diameter is used as the average particle size in this invention.

[0010] The component (A) used in the present invention is a dispersion of an alkyl acrylate / vinyl acetate copolymer (A-2) in a non-aqueous solvent (A-1).

[0011] Alkyl acrylate-vinyl acetate copolymer (A-2) corresponds to the component listed under the INCI name (International Nomenclature Cosmetic Ingredient labeling names) as ACRYLATES / VA COPOLYMER. Component (A) is obtained by copolymerizing alkyl (meth)acrylate with vinyl acetate, and the alkyl (meth)acrylate may be one or more alkyl (meth)acrylates having an alkyl group containing 1 to 4, 8, or 12 carbon atoms. The mass ratio of alkyl (meth)acrylate to vinyl acetate constituting component (A) is not particularly limited, but is preferably 30:70 to 95:5 (alkyl (meth)acrylate:vinyl acetate), and more preferably 40:60 to 70:30. This range is more preferred because it provides excellent makeup longevity, ease of removal with hot water, film flexibility, film-forming properties, and lack of smearing when using a brush-type applicator.

[0012] The number-average molecular weight of component (A-2) is not particularly limited, but from the viewpoint of cosmetic durability, it is preferably 50,000 to 500,000, and more preferably 50,000 to 300,000. The number-average molecular weight is a polystyrene-equivalent value determined by gel permeation chromatography. Furthermore, from the viewpoint of ease of removal with hot water, the Tg of a polymer obtained by polymerizing only alkyl (meth)acrylate among the monomers constituting component (A) is preferably 10°C or higher as a lower limit, more preferably 15°C or higher, and even more preferably 20°C or higher as an upper limit. Furthermore, it is preferably 50°C or lower, and more preferably 40°C or lower as an upper limit.

[0013] The nonaqueous solvent (A-1), which is the dispersion medium for component (A), includes organic solvents and silicone-based solvents that can be incorporated into cosmetics. Among these, volatile hydrocarbon oils, fatty acid esters, fatty acids, silicone oils, etc. are preferred in terms of film-forming properties and the lack of smearing when using a brush-type applicator, with volatile hydrocarbon oils being more preferred. Volatile hydrocarbon oils are hydrocarbons with a boiling point of 260°C or less at normal pressure, such as hydrocarbons with side chains such as isooctane, isododecane, isohexadecane, and isoeicosaene; isoparaffin; and mixtures thereof, as well as isobutene, n-butene, etc., polymerized or copolymerized (with a degree of polymerization of 4 to 6 being preferred) and then hydrogenated. One or more of these can be used in combination as needed. Of these, isododecane is preferred.

[0014] The fatty acid ester is not particularly limited, but from the viewpoint of preventing smearing when using a brush-type applicator, it is preferable that the alkyl group of the constituent fatty acid is 2 to 18, more preferably 4 to 16, and particularly preferably 8 to 12. Suitable fatty acid esters include, for example, neopentyl glycol di-2-ethylhexanoate, diethylhexyl succinate, ethylhexyl palmitate, isopropyl myristate, dimer dilinoleyl hydrogenated rosin condensate, caprylic / capric triglyceride, cetyl 2-ethylhexanoate, neopentyl glycol dicaprate, propylene glycol dicaprate, isotridecyl isononanoate, glyceryl tri-2-ethylhexanoate, diisostearyl malate, 2-ethylhexyl paramethoxycinnamate, ethylhexyl salicylate, pentaerythritol tetra-2-ethylhexanoate, polyglyceryl-10 decaethylhexanoate, ethylhexyl hydroxystearate, tritridecyl trimellitate, dipentaerythrityl hexaisononanoate, and diglyceryl triisostearate, and one or more of these may be used. Of these, neopentyl glycol di-2-ethylhexanoate, diethylhexyl succinate, ethylhexyl palmitate, isopropyl myristate, dimer dilinoleyl hydrogenated rosin condensate, tri(caprylic / capric acid)glyceryl, cetyl 2-ethylhexanoate, neopentyl glycol dicaprate, propylene glycol dicaprate, isotridecyl isononanoate, glyceryl tri-2-ethylhexanoate, diisostearyl malate, 2-ethylhexyl paramethoxycinnamate, and ethylhexyl salicylate are more preferred.

[0015] Examples of fatty acids include isostearic acid, stearic acid, oleic acid, lauric acid, palmitic acid, etc. Examples of silicone oils include volatile silicone oils such as diphenylsiloxyphenyl trimethicone, diphenyl dimethicone, octamethylcyclotetrasiloxane, dodecamethylcyclohexasiloxane, methyl trimethicone, caprylyl trimethicone, dimethylpolysiloxane, decamethylcyclopentasiloxane, and decamethyltetrasiloxane.

[0016] In component (A), the alkyl acrylate-vinyl acetate copolymer (A-2) is dispersed in the nonaqueous solvent (A-1) as resin particles. The average particle size is preferably 0.1 to 2 μm from the viewpoints of makeup durability, ease of removal with hot water, film flexibility, and lack of smearing when using a brush-type application tool. The average particle size of the resin particles is determined using laser diffraction as follows: 5 mL of component (A) is placed in a glass cell measuring 5 mm in length, 65 mm in width, and 80 mm in height using a Pasteur pipette, and the cell is placed in a laser diffraction / scattering particle size analyzer (LA-910A, manufactured by Horiba, Ltd.). The concentration of component (A) is adjusted to achieve a laser light (red) transmittance of 80% to 90%, and the results are measured at a temperature of 25°C ± 1°C. The average particle size of the resin particles in the nonaqueous dispersion is determined by computer processing, and the volume average (D50) value is taken as the average particle size.

[0017] Component (A) can be obtained by known methods, such as by polymerizing alkyl (meth)acrylate and vinyl acetate in a non-aqueous solvent, or by dispersing a prepared alkyl acrylate / vinyl acetate copolymer in a non-aqueous solvent. The mass ratio ((A-2) / (A-1)) of the non-aqueous solvent (A-1) to the alkyl acrylate / vinyl acetate copolymer (A-2) in component (A) is preferably 1 or less, from the viewpoints of film-forming properties and the absence of blurring when using a brush-type application tool. Examples of commercially available products of component (A) include Nissetsu U-3712A (manufactured by Nippon Carbide Industries Co., Ltd.), and the number-average molecular weight and average particle size of the alkyl acrylate / vinyl acetate copolymer (A-2) contained therein fall within the above-mentioned ranges.

[0018] The content of component (A-2) in the eyeliner cosmetic of the present invention is not particularly limited, but the lower limit is preferably 0.8% or more, more preferably 1% or more, even more preferably 2% or more, and particularly preferably 3% or more. The upper limit is preferably 20% or less, more preferably 15% or less, even more preferably 10% or less, particularly preferably 8% or less, and most preferably 6% or less. This range is more preferable because it provides better makeup durability, ease of removal with hot water, film flexibility, and film-forming properties.

[0019] Component (B) in the present invention is an ester of a fatty acid and dextrin. Any dextrin fatty acid ester that can be used in ordinary cosmetics can be used as the dextrin fatty acid ester of the present invention. For example, the fatty acid used in the dextrin fatty acid ester of the present invention is not particularly limited. However, from the viewpoints of film-forming ability and film flexibility, the lower limit of the number of carbon atoms in the fatty acid is preferably 12 or more, more preferably 14 or more, and even more preferably 16 or more. The upper limit is preferably 22 or less, more preferably 20 or less, and even more preferably 18 or less. Specific examples of such fatty acids include ethylhexanoic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, and behenic acid. Furthermore, while any fatty acid, whether linear or branched, can be used in the dextrin fatty acid ester, linear fatty acids are preferred from the viewpoint of film-forming ability. While any fatty acid, whether saturated or unsaturated, can be used, saturated fatty acids are preferred from the viewpoint of film-forming ability. Furthermore, the degree of substitution of fatty acids for hydroxyl groups of dextrin is not particularly limited, but the lower limit is preferably 1 or more, more preferably 1.7 or more, and the upper limit is preferably 3 or less, more preferably 2.5 or less.

[0020] Examples of such component (B) include dextrin laurate, dextrin myristate, dextrin palmitate, dextrin (palmitate / ethylhexanoate), dextrin stearate, dextrin isostearate, dextrin behenate, coconut oil fatty acid dextrin, etc. Among these, one or more selected from the group consisting of dextrin myristate, dextrin palmitate, dextrin (palmitate / ethylhexanoate), dextrin stearate, and dextrin isostearate are preferred, one or more selected from the group consisting of dextrin myristate, dextrin palmitate, and dextrin (palmitate / ethylhexanoate) are more preferred, and dextrin palmitate is even more preferred.

[0021] The combination of components (A) and (B) of the present invention, along with the other components (C) and (D), improves ease of removal with hot water, film flexibility, and film-forming ability. Like component (A), component (B) has a hydrophilic and hydrophobic portion, and acts as a film-forming aid in the process of component (A) fusing together, which is thought to improve film-forming ability. Furthermore, the interaction between components (A) and (B) is thought to form a flexible film that can be easily removed with hot water.

[0022] Commercially available dextrin fatty acid esters used in component (B) include "Leopearl KL2," "Leopearl ISL," "Leopearl TT," and "Leopearl TL2" (all manufactured by Chiba Flour Mills Co., Ltd.).

[0023] The content of component (B) in the present invention is not particularly limited, but the lower limit is preferably 1% or more, more preferably 2% or more, even more preferably 4% or more, and particularly preferably 6% or more. The upper limit is preferably 20% or less, more preferably 15% or less, even more preferably 14% or less, and particularly preferably 12% or less. This range is more preferable because it provides excellent makeup durability, film flexibility, film-forming properties, and the absence of smearing when using a brush-type application tool.

[0024] In the present invention, the mass ratio of the components (A-2) and (B) is not particularly limited, but specifying the mass ratio is preferred because better effects can be expected. The lower limit of the mass ratio (A-2) / (B) of the components (A-2) and (B) is preferably 0.08 or more, more preferably 0.1 or more, even more preferably 0.2 or more, and even more preferably 0.3 or more. The upper limit is preferably 2.5 or less, more preferably 2 or less, even more preferably 1.5 or less, particularly preferably 1 or less, and most preferably 0.5 or less. This range is more preferred because it provides excellent makeup durability, ease of removal with hot water, film flexibility, film-forming properties, and lack of smearing when using a brush-type application tool.

[0025] Component (C) in the present invention is a hydrophobic surface-treated powder in which part or all of the powder surface has been coated with a hydrophobic surface treatment agent to impart hydrophobicity to the powder. The hydrophobic surface-treated powder in the present invention can be any powder commonly used in cosmetics, without any particular limitations. Treating the powder weakens the adhesiveness of the powder surface and reduces aggregation between powder particles. Therefore, when combined with component (B), a more uniform cosmetic film can be formed, resulting in effects such as longer cosmetic wear.

[0026] Examples of surface treatment agents used as component (C) in the present invention include fluorine compounds, silane compounds, organic titanates, silicone compounds, oils, gelling agents, emulsion polymers, etc. In the present invention, one or more of these may be used in combination. Among these, one or more selected from the group consisting of fluorine compounds, silane compounds, and silicone compounds are preferred in terms of excellent cosmetic retention, etc., and fluorine compounds or silane compounds are more preferred, with fluorine compounds being particularly preferred in terms of excellent cosmetic retention and film flexibility.

[0027] In the surface treatment agent of the present invention, examples of the fluorine compound include perfluoroalkyl phosphate ester diethanolamine salt, perfluorooctyltriethoxysilane, perfluoropolyether, etc. Among these, it is more preferable to use perfluorooctyltriethoxysilane.

[0028] Examples of silane compounds include silane coupling agents, specifically trialkoxyalkylsilanes. Trialkoxyalkylsilanes are compounds in which three alkoxy groups and one alkyl group are bonded to a silicon atom, and the alkoxy groups react with hydroxyl groups, etc., on the powder surface to chemically modify the powder surface. In the trialkoxyalkylsilanes, the alkoxy groups are preferably alkoxy groups having 1 to 3 carbon atoms, such as methoxy, ethoxy, and propoxy. In the trialkoxyalkylsilanes, the alkyl groups are preferably alkyl groups having 6 to 18 carbon atoms, such as hexyl, octyl, decyl, and octadecyl. Examples of such trialkoxyalkylsilanes include trimethoxyhexylsilane, trimethoxyoctylsilane, trimethoxydecylsilane, trimethoxyoctadecylsilane, triethoxyhexylsilane, triethoxyoctylsilane, triethoxydecylsilane, and triethoxyoctadecylsilane. Among these trialkoxyalkylsilanes, trimethoxyoctylsilane and triethoxyoctylsilane are preferred.

[0029] The amount of the hydrophobic surface treatment agent in the hydrophobic surface-treated powder (component (C)) of the present invention is not particularly limited, but the lower limit is preferably 0.1% or more, more preferably 0.5% or more, and even more preferably 1% or more. The upper limit is preferably 10% or less, more preferably 5% or less, and even more preferably 3% or less. This range is more preferable because it provides excellent makeup retention, is easy to remove with hot water, and does not cause smearing when applied.

[0030] The powder used as component (C) in the present invention is not particularly limited as long as it is one normally used in cosmetics, and may have a shape such as spherical, plate-like, or needle-like, an average particle diameter such as fine particles or pigment-grade, or a particle structure such as porous or non-porous, and examples thereof include inorganic powders, glitter powders, pigment powders, metal powders, and composite powders. Specifically, white inorganic pigments such as titanium oxide, zinc oxide, cerium oxide, and barium sulfate; colored inorganic pigments such as iron oxide, carbon black, titanium-titanium oxide sintered product, chromium oxide, chromium hydroxide, iron blue, and ultramarine; white filler powders such as silica, talc, muscovite, phlogopite, lepidolite, biotite, synthetic mica, sericite, synthetic sericite, kaolin, silicon carbide, bentonite, smectite, aluminum oxide, magnesium oxide, zirconium oxide, antimony oxide, diatomaceous earth, aluminum silicate, magnesium aluminum metasilicate, calcium silicate, barium silicate, magnesium silicate, calcium carbonate, magnesium carbonate, hydroxyapatite, and boron nitride; titanium oxide-coated mica, titanium oxide-coated bismuth oxychloride, iron oxide titanium mica, iron blue-treated titanium mica, carmine-treated titanium mica, bismuth oxychloride, fish scale foil, polyethylene terephthalate-aluminum-epoxy Examples of suitable pigments include glitter powders such as zinc stearate, aluminum stearate, magnesium stearate, zinc laurate, aluminum laurate, and magnesium laurate; organic pigment powders such as zirconium, barium, or aluminum lakes such as Red No. 201, Red No. 202, Red No. 205, Red No. 226, Red No. 228, Orange No. 203, Orange No. 204, Blue No. 404, Yellow No. 401, Red No. 3, Red No. 104, Red No. 106, Orange No. 205, Yellow No. 4, Yellow No. 5, Green No. 3, and Blue No. 1; and metal powders such as aluminum powder, gold powder, and silver powder. Examples of suitable pigments include titanium dioxide-coated mica titanium fine particle, zinc oxide-coated mica titanium fine particle, barium sulfate-coated mica titanium fine particle, titanium oxide-containing silicon dioxide, and zinc oxide-containing silicon dioxide.

[0031] The content of component (C) in the present invention is not particularly limited, but the lower limit is preferably 1% or more, more preferably 5% or more, and even more preferably 10% or more. The upper limit is preferably 50% or less, more preferably 30% or less, and even more preferably 20% or less. This range is more preferable because it provides excellent makeup durability, film flexibility, and the absence of smearing when using a brush-type application tool.

[0032] In the present invention, the mass ratio of the components (B) and (C) is not particularly limited, but specifying the mass ratio is preferred because greater effects can be expected. The lower limit of the mass ratio (B) / (C) of the components (B) and (C) is preferably 0.1 or more, more preferably 0.2 or more, and even more preferably 0.3 or more. The upper limit is preferably 2 or less, more preferably 1.5 or less, even more preferably 1 or less, and particularly preferably 0.7 or less. This range is more preferred because it provides superior cosmetic durability, film flexibility, film-forming properties, and the absence of smearing when using a brush-type application tool.

[0033] The volatile oil agent (D) of the present invention is an oil agent that is volatile at 25°C. Component (D) of the present invention is not particularly limited, but the same components as the nonaqueous solvent (A-1) of component (A) above can be suitably used, and any component commonly used in cosmetics can be used without particular limitation. Specific examples include volatile hydrocarbon oils and volatile silicone oils. More specific examples include isododecane, light liquid isoparaffin, octamethylcyclotetrasiloxane, dodecamethylcyclohexasiloxane, methyl trimethicone, caprylyl trimethicone, dimethylpolysiloxane, decamethylcyclopentasiloxane, and decamethyltetrasiloxane, and one or more of these can be contained. Among these, from the viewpoints of film-forming properties and the absence of smearing when using a brush-type applicator, volatile hydrocarbon oils are preferred, isododecane or light liquid isoparaffin are more preferred, and isododecane is even more preferred.

[0034] The content of component (D) in the present invention is not particularly limited, but the lower limit is preferably 20% or more, more preferably 30% or more, and even more preferably 40% or more. The upper limit is preferably 80% or less, more preferably 70% or less, and even more preferably 60% or less. This range is more preferable because it provides better film-forming properties.

[0035] When the component (A-1) used in the present invention is a volatile oil, the total content of the volatile oil (A-1) and the component (D), [(A-1) + (D)], is not particularly limited, but the lower limit is preferably 20% or more, more preferably 30% or more, and even more preferably 40% or more. The upper limit is preferably 80% or less, more preferably 75% or less, and even more preferably 70% or less. This range is more preferable because it provides better film-forming properties.

[0036] The present invention may further contain a nonionic surfactant as component (E). Inclusion of component (E) in the present invention is more preferable because it enhances the dispersibility of component (C) in the eyeliner cosmetic, resulting in excellent cosmetic durability and easier removal with hot water when removing the cosmetic.

[0037] Component (E) in the present invention is not particularly limited, but the lower limit of the HLB is preferably 1 or more, more preferably 2 or more, and even more preferably 3 or more. The upper limit is preferably 18 or less, more preferably 8 or less, and even more preferably 5 or less. The HLB (Hydrophile-Lypophile Balance) value used in the present invention is a value obtained by the Griffin method.

[0038] By specifying the HLB, component (E) in the present invention achieves excellent makeup durability while also being easily removable with hot water when removing the cosmetic. Furthermore, by specifying the structure, it is also preferable because it provides excellent smoothness. For example, an ester of a fatty acid and an alcohol is preferred. The fatty acid used in such an ester preferably has a lower carbon number of 12 or more, more preferably 14 or more, and even more preferably 16 or more. The upper carbon number is preferably 22 or less, more preferably 20 or less, and even more preferably 18 or less. Furthermore, it is preferable that the carbon chain of the fatty acid is branched. The alcohol is preferably a polyhydric alcohol, more specifically, dihydric or higher alcohols, glycols, sugars, sugar alcohols, etc. Among these, one or more selected from the group consisting of glycols, sugars, and sugar alcohols are preferred, and sugars or sugar alcohols are more preferred. Examples of such sugars or sugar alcohols include glucose, sucrose, maltose, sorbitol, etc., and one or more selected from these are preferred, with sucrose or sorbitol being more preferred, and sorbitol being particularly preferred.

[0039] In the present invention, examples of component (E) include polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyoxyethylene cholesteryl ethers, polyoxyethylene cholestanol ethers, polyoxyethylene phytosterol ethers, polyethylene glycol fatty acid esters, polyglycerin fatty acid esters, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid esters, sorbitan fatty acid esters, sorbitan sesquioleate, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene glycerin fatty acid esters, ethylene oxide derivatives of propylene glycol fatty acid esters, ethylene oxide derivatives of polyglycerin fatty acid esters, sucrose fatty acid esters, alkyl polyglucosides, polyoxyethylene fatty acid alkanolamides, fatty acid alkanolamides, polyoxyalkylene-modified organopolysiloxanes, and alkyl-containing polyoxyalkylene-modified organopolysiloxanes. Among these, one or more selected from the group consisting of sorbitan fatty acid esters and sucrose fatty acid esters are preferred. Specific examples include sorbitan monoisostearate, sorbitan sesquiisostearate, sorbitan monopalmitate, sorbitan oleate, sorbitan sesquioleate, sorbitan tristearate, sucrose stearate, sucrose tetraisostearate, sucrose pentahydroxystearate, and sucrose polystearate. Among these, sorbitan sesquiisostearate (HLB4), sorbitan monopalmitate (HLB6.7), sorbitan sesquioleate (HLB4), and sucrose polystearate (HLB1) are preferred, and sorbitan sesquiisostearate, sorbitan sesquioleate, and sucrose polystearate are more preferred.

[0040] The content of component (E) in the present invention is not particularly limited, but the lower limit is preferably 0.01% or more, more preferably 0.05% or more, and even more preferably 0.1% or more. The upper limit is preferably 5% or less, more preferably 3% or less, and even more preferably 1% or less. This range is more preferable because it provides excellent makeup durability and prevents smearing when using a brush-type application tool.

[0041] The present invention may further contain component (F), an organic powder. The organic powder used in the present invention is not particularly limited in terms of shape (e.g., spherical, plate-like), particle size, particle structure (e.g., porous, non-porous), etc., as long as it is an organic powder typically used in cosmetics. In the present invention, a spherical shape is preferred because it is superior in terms of preventing smearing when using a brush-type application tool.

[0042] Examples of component (F) include organic powders such as nylon powder, polymethyl methacrylate powder, acrylonitrile-methacrylic acid copolymer powder, vinylidene chloride-methacrylic acid copolymer powder, PET resin powder, polyethylene powder, polystyrene powder, organopolysiloxane elastomer powder, polymethylsilsesquioxane powder, polyurethane powder, wool powder, silk powder, crystalline cellulose, and N-acylysine. Among these, one or more selected from the group consisting of organopolysiloxane elastomer powder, polymethylsilsesquioxane powder, polyurethane powder, and crystalline cellulose are preferred, one or more selected from the group consisting of organopolysiloxane elastomer powder, polymethylsilsesquioxane powder, and crystalline cellulose are more preferred, and one or more selected from the group consisting of organopolysiloxane elastomer powder and crystalline cellulose are even more preferred. Examples of commercially available organopolysiloxane elastomer powders include KSP-100, KSP-101, and KSP-102 (all manufactured by Shin-Etsu Chemical Co., Ltd., (vinyl dimethicone / methicone silsesquioxane) crosspolymer).

[0043] The average particle size of component (F) is preferably 0.1 μm or more, more preferably 1 μm or more, even more preferably 3 μm or more, and particularly preferably 7 μm or more, in terms of achieving excellent makeup retention and preventing smearing when using a brush-type application tool, and the upper limit is preferably 30 μm or less, more preferably 20 μm or less, and even more preferably 15 μm or less.

[0044] The content of component (F) in the present invention is not particularly limited, but the lower limit is preferably 1% or more, more preferably 3% or more, and even more preferably 5% or more. The upper limit is preferably 20% or less, more preferably 17% or less, and even more preferably 15% or less. This range is more preferable because it results in excellent smoothness when applied.

[0045] The eyeliner cosmetic of the present invention may further contain water. Tap water, purified water purified by distillation or the like, hot spring water, deep sea water, etc. may also be used. Plant extracts such as aloe vera, witch hazel, hamamelis, cucumber, lemon, lavender, and rose water may also be used.

[0046] The water content in the present invention is not particularly limited, but the lower limit is preferably 0.0001% or more, more preferably 0.001% or more, and even more preferably 0.01% or more, and the upper limit is preferably 30% or less, more preferably 25% or less, and even more preferably 20% or less.

[0047] The eyeliner cosmetic of the present invention can be produced by a commonly known method.

[0048] The eyeliner cosmetic of the present invention is not particularly limited, but can take the form of powder, solid, liquid, gel, or the like. Liquid or gel forms are preferred from the viewpoint of preventing smearing when using a brush-shaped application tool. The eyeliner cosmetic of the present invention may be either an oil-based or water-based type, with the oil-based type being preferred. Oil-based types include non-aqueous types and W / O types. In this specification, the term "non-aqueous type" refers to a type having a water content of 5% or less, preferably 3% or less, and more preferably 1% or less. The oil-based eyeliner cosmetic of the present invention, while being oil-based, combines the advantage of water-based types, namely, ease of removal with hot water.

[0049] The viscosity of the eyeliner cosmetic of the present invention is not particularly limited and can be varied. For example, the lower limit is preferably 250 mPa·s or more at 25°C, more preferably 500 mPa·s or more, and even more preferably 1000 mPa·s or more. The upper limit is preferably 20,000 mPa·s or less at 25°C, more preferably 18,000 mPa·s or less, and even more preferably 15,000 mPa·s or less. In the present invention, the viscosity at 25°C can be measured using a Brookfield viscometer in accordance with Method 2 of the Cosmetic Ingredients Standard Viscosity Measurement Method. For example, the eyeliner cosmetic can be left to stand at 25°C for one day, and then measured using a Brookfield viscometer (manufactured by Eiko Seiki Co., Ltd.) at 25°C with a rotor No. 4 at 6 rpm for 1 minute. [Example]

[0050] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples.

[0051] Example 1 (Products 1 to 27 of the present invention) and Comparative Examples (Comparative Products 1 to 6): Eyeliner The eyeliners shown in Tables 1 to 4 were prepared and evaluated and judged using the following evaluation methods for a) makeup durability, b) ease of removal with warm water, c) film flexibility, d) film-forming ability, and e) lack of smearing upon application. The results are also shown in Tables 1 to 4.

[0052] [Table 1] *1: Nissetsu U-3712A (manufactured by Nippon Carbide Industries Co., Ltd., solid content 45%, isododecane solvent) Alkyl (meth)acrylate (Tg 30°C): vinyl acetate 50:50 *2: The copolymer components are the same as *1 (solid content 45% isododecane solvent) Alkyl (meth)acrylate (Tg 30°C):vinyl acetate = 70:30 *3: The copolymer components are the same as *1 (solid content 45% isododecane solvent). Alkyl (meth)acrylate (Tg 30°C):vinyl acetate = 30:70 *4: Leopearl KL2 (manufactured by Chiba Flour Mills): Substitution degree 2 *5: Leopearl TL2 (manufactured by Chiba Flour Mills): Substitution degree 1.5 *6: Leopearl MKL2 (manufactured by Chiba Flour Mills): Substitution degree: 2 *7: Leopearl TT2 (manufactured by Chiba Flour Mills): Substitution degree 1.5 *8: KF-96L-2CS (Shin-Etsu Chemical Co., Ltd.) *9: KSP-100 (Shin-Etsu Chemical Co., Ltd.) *10: KSP-101 (Shin-Etsu Chemical Co., Ltd.) *11: KSP-102 (Shin-Etsu Chemical Co., Ltd.) *12:CELLULOBEADS D-10 (manufactured by Daido Kasei Co., Ltd.)

[0053] [Table 2]

[0054] [Table 3]

[0055] [Table 4]

[0056] (Manufacturing method) A. Heat ingredients (1) to (22) and (27) to 80°C and mix uniformly. The BA is processed with a roller. Components (23) to (26) were added to CB and mixed, and then the mixture was filled into a container with a brush-type applicator to obtain an eyeliner.

[0057] (Evaluation items) B. Cosmetic durability C. Flexibility of the membrane E. No smearing when applied

[0058] (Evaluation method) Twenty expert cosmetic evaluation panelists used Example 1 (products 1 to 27 of the present invention) and the comparative examples (comparison products 1 to 6), and each panelist evaluated and scored the following items on a four-point scale according to the following evaluation criteria: (a) whether the cosmetic film remained unchanged for 8 hours; (c) whether there was no feeling of strain when blinking (the cosmetic film was judged to be flexible if it moved flexibly in response to the movement of the blink and no feeling of strain was felt); and (e) whether the application could be made without smearing when using a brush-type applicator. The average score of the scores of all panels was then judged according to the following evaluation criteria.

[0059] (Evaluation criteria) (Rating): (Evaluation) 4: Very good 3: Good 2: Bad 1: Very bad

[0060] (Judgment criteria) (Judgment): (Average score) ◎: 3.5 points or more 〇: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

[0061] (Evaluation items) B. Easy to remove with hot water

[0062] (Evaluation method) A panel of 20 experts in cosmetic evaluation used Example 1 (products 1 to 27 of the present invention) and Comparative Examples (comparison products 1 to 6). After evaluating the makeup durability, they scrubbed the products with hot water at 40°C at least five times and evaluated the ease of removal with hot water. The results were judged according to the following criteria.

[0063] (Judgment criteria) (Judgment): (When washed with hot water) ◎: Completely removed after scrubbing five times with 40°C water ○: Completely removed after scrubbing 6-10 times with 40°C water △: Completely removed after scrubbing 11-15 times in 40°C water ×: When scrubbed more than 16 times with 40°C water, a cosmetic film remains

[0064] (Evaluation items) 2: Film forming property

[0065] (Evaluation method) 0.2 g of each of Example 1 (Products 1 to 27 of the present invention) and Comparative Examples (Comparative Products 1 to 6) was applied to a glass plate in an area of ​​3 cm x 3 cm and a thickness of 12.5 μm. To confirm that the coating film had dried and formed, the surface of the film was touched with a finger and the time it took for the bulk to no longer stick to the finger was judged according to the following criteria.

[0066] (Judgment criteria) (Judgment): (Time it takes for the coating to dry) ◎: The coating dries in less than 1 minute 30 seconds after application 〇: The coating dries in 1 minute 30 seconds or more and less than 2 minutes 30 seconds after application. △: The coating dries in 2 minutes 30 seconds or more but less than 3 minutes 30 seconds after application. ×: The coating dries in 3 minutes and 30 seconds or more after application.

[0067] As is clear from the results in Tables 1 to 4, the eyeliners of Example 1 (Products 1 to 27 of the Invention) were superior to the comparative examples in all aspects, including makeup retention, ease of removal with hot water, film flexibility, film-forming ability, and lack of smearing upon application. On the other hand, Comparative Products 1 and 2, in which component (A) was replaced with other polymers or resins, were lacking in ease of removal with hot water, film flexibility, and film-forming ability. Furthermore, Comparative Products 3, 4, and 5, in which component (B) was replaced with other thickeners and adjusted to a viscosity similar to that of Invention Product 3 (15,000 mPa·s at 25°C), were lacking in makeup retention, film flexibility, film-forming ability, and lack of smearing when using a brush-type applicator. Comparative Product 6, which used powder without a surface treatment, was lacking in makeup retention, film flexibility, and film-forming ability.

[0068] Example 2 Liquid eyeliner (Component) (%) 1. (Alkyl acrylate / vinyl acetate) copolymer *1 10 2. Carnauba wax 2 3. Hydrogenated soybean phospholipid 0.5 4. Silica anhydride 0.1 5. Dextrin palmitate *5 10 6. Perfluorooctyltriethoxysilane 3% treated black iron oxide 10 7. Talc 5 8. Isododecane remaining 9. Sorbitan sesquiisostearate (HLB: 4.0) 0.3 10. Diisostearyl Malate 1 11. Triethylhexanoin 1 12. Hydrogenated polyisobutene 1 13. Methylparaben 0.1 14. Gardenia Extract 0.01 15. Rose extract 0.01 16.Fragrance 0.01 17 (Vinyl Dimethicone / Methicone Silsesquioxane) Crosspolymer average particle size μm 10

[0069] (Manufacturing method) A. Heat ingredients (1) to (15) to 80°C and mix uniformly. The BA is processed using a roller. Components (16) and (17) were added to CB and mixed, and then the mixture was filled into a container with a brush-type applicator to obtain an eyeliner.

[0070] The liquid eyeliner obtained in this manner was excellent in makeup durability, ease of removal with warm water, film flexibility, film-forming properties, and lack of smearing when applied with a brush-type applicator.

[0071] Example 3 Eyeliner Gel (Component) (%) 1. (Alkyl acrylate / vinyl acetate) copolymer *1 10 2. Candelilla Wax 3 3. Microcrystalline wax 1 4. Dextrin palmitate *4 15 5. Perfluorooctyltriethoxysilane 3% treated black iron oxide 30 6. Mica 5 7. Isododecane remaining 8. Sorbitan sesquiisostearate (HLB: 4.0) 0.3 9. Lecithin 0.01 10. Mineral oil 0.01 11. Kaykket Extract 0.01 12. Macadamia nut oil 0.01 13. Methylparaben 0.1 14. (Vinyl Dimethicone / Methicone Silsesquioxane) Crosspolymer Average particle size 12μm 10

[0072] (Manufacturing method) A. Heat ingredients (1) to (13) to 80°C and mix uniformly. The BA is processed using a roller. Component (14) was added to CB and mixed, and then the mixture was filled into a container equipped with a brush-type applicator to obtain an eyeliner.

[0073] The gel eyeliner obtained in this manner was excellent in makeup durability, ease of removal with hot water, film flexibility, film-forming properties, and lack of smearing when applied with a brush-type applicator.

[0074] Example 4 Eyeliner Solid (Component) (%) 1. Polyethylene wax 10 2. (Alkyl acrylate / vinyl acetate) copolymer *1 10 3. Dextrin palmitate *5 10 4. Perfluorooctyltriethoxysilane 3% treated black iron oxide 10 5. Isododecane remaining 6. Sorbitan sesquiisostearate (HLB: 4.0) 0.3 7. Chlorphenesin 0.1 8. Oil-soluble rosemary extract 0.01 9. Almond oil 0.01 10. Refined olive oil 0.01 11. Refined Jojoba Oil 0.01 12. Safflower oil 0.01 13. Refined Shea Butter 0.01 14. Sesame oil 0.01 15. Squalane 0.01 16. (Vinyl Dimethicone / Methicone Silsesquioxane) Crosspolymer Average particle size 12μm 10

[0075] A. Dissolve ingredients (1) to (15) uniformly at 100°C. Add component (16) to BA and mix evenly. CB was melted and poured into a metal dish at 90°C, and then cooled and solidified to obtain a solid eyeliner.

[0076] The gold-plated eyeliner obtained in this manner was excellent in makeup durability, ease of removal with hot water, film flexibility, film-forming properties, and lack of smearing when using a brush-type applicator.

[0077] Example 5 Eyeliner Water-in-oil emulsion cosmetic (Component) (%) 1. (Alkyl acrylate / vinyl acetate) copolymer *1 10 2. Dextrin palmitate *4 10 3. Perfluorooctyltriethoxysilane 3% treated black iron oxide 10 4. Isododecane remaining 5. Glyceryl monostearate (HLB: 4.0) 0.3 6. Polyethylene glycol dipolyhydroxystearate (HLB:5.0) 0.1 7. PEG-9 Polydimethylsiloxyethyl Dimethicone (HLB:4.0) 0.1 8. Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone (HLB:3.0) 0.1 9. Methylparaben 0.01 11. Phenoxyethanol 0.01 12. Ethanol 0.5 13. Lavender water 0.01 14. Peony flower extract 0.01 15. Damask rose extract 0.01 16. Madonna Lily Root Extract 0.01 17.DPG 0.1 18.EDTA-2Na 0.01 19. (Vinyl Dimethicone / Methicone Silsesquioxane) Crosspolymer Average particle size 30μm 10

[0078] A. Dissolve ingredients (1) to (8) uniformly at 80°C. Add ingredients (9) to (18) to the BA and emulsify uniformly. Component (19) was added to CB and mixed uniformly, and then the mixture was poured into a container equipped with a brush-type applicator to obtain an eyeliner.

[0079] The eyeliner obtained in this manner was excellent in makeup durability, ease of removal with warm water, film flexibility, film-forming properties, and lack of smearing when using a brush-type applicator.

Claims

1. The following components (A) to (E): (A) (A-1) (A-2) Alkyl acrylate / vinyl acetate copolymer dispersion using a non-aqueous solvent as a dispersion medium (B) Dextrin fatty acid ester (C) Hydrophobic surface-treated powder (D) Volatile oil (E) Sorbitan sesquiisostearate and / or sorbitan monopalmitate An eyeliner cosmetic comprising:

2. 2. The eyeliner cosmetic according to claim 1, wherein the component (A-2) acrylic alkyl / vinyl acetate copolymer is a copolymer of alkyl (meth)acrylate and vinyl acetate in a mass ratio ranging from 30:70 to 95:

5.

3. 3. The eyeliner cosmetic according to claim 1, wherein the Tg of the alkyl (meth)acrylate polymer constituting the alkyl acrylate / vinyl acetate copolymer, component (A-2), is 10° C. or higher and 50° C. or lower.

4. 4. The eyeliner cosmetic according to claim 1, wherein the number average molecular weight of the alkyl acrylate / vinyl acetate copolymer as component (A-2) is 50,000 to 500,000.

5. The eyeliner cosmetic according to any one of claims 1 to 4, wherein the content of the component (A-2) is 0.8 to 20% by mass.

6. 6. The eyeliner cosmetic according to claim 1, wherein the component (B) is dextrin palmitate.

7. 7. The eyeliner cosmetic according to claim 1, wherein the component (C) is a powder surface-treated with a fluorine compound.

8. 8. The eyeliner cosmetic according to claim 1, wherein the mass ratio (A-2) / (B) of the components (A-2) and (B) is 0.08 to 2.

5.

9. The eyeliner cosmetic according to any one of claims 1 to 8, further comprising component (F) an organic powder.

10. The eyeliner cosmetic according to claim 9, wherein the component (F) is an organic spherical powder.

11. The eyeliner cosmetic according to claim 9 or 10, wherein the average particle size of the component (F) is 5 to 15 μm.

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