Oil-in-water emulsion solid cosmetics

Abstract

To provide a water-in-oil emulsified solid cosmetic having excellent stability and usability.SOLUTION: A water-in-oil emulsified solid cosmetic contains (A) methacrylate / alkylmethacrylate / methacrylate POE monoalkyl ether ester copolymer, (B) hydrophilic surfactant, (C) higher alcohol, and (D) hydrophobic colorant.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to an oil-in-water emulsion solid cosmetic preparation. More specifically, the present invention relates to an oil-in-water emulsion solid cosmetic preparation that has the freshness and moisturizing effect of an oil-in-water emulsion, while being easy to remove with a puff like a water-in-oil solid emulsion containing wax. [Background technology]

[0002] Conventional solid cosmetics such as foundation are made of water-in-oil materials that contain waxes to maintain their shape. solid Water-in-oil solid emulsion cosmetics are excellent in terms of shape retention and ease of removal with applicators such as puffs, but they lack the freshness when applied, are inferior in moisturizing effect and feeling of moisture, and are prone to becoming heavy and sticky, which are characteristic of wax.

[0003] On the other hand, oil-in-water emulsion cosmetics provide a fresh feel and have excellent moisturizing effects, but it is believed that there is room for improvement in terms of shape retention and absorption onto puffs.

[0004] From this perspective, attempts have been made to improve usability by incorporating a specific hydrophilic thickener in a specific content in an oil-in-water solid cosmetic preparation (Patent Document 1). While such cosmetics have been successful in improving usability, etc., there is a demand for further improvements in usability, effectiveness, etc., due to the recent increase in consumer needs. In particular, in conventional solid cosmetic preparations, in order to aid shape retention and transfer onto a puff, a mesh net is attached to the compactly filled composition, thereby improving transfer onto a puff to a satisfactory level. However, there is a demand for the development of an oil-in-water emulsion solid cosmetic preparation that can achieve sufficient transfer and shape retention without the use of a net. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Patent Application Publication No. 2019 / 088056 Summary of the Invention [Problem to be solved by the invention]

[0006] As described above, conventional water-in-oil emulsion solid cosmetics have been required to simultaneously achieve good spreadability upon application, easy removal when using a puff, a fresh feeling after application, and high cosmetic stability. [Means for solving the problem]

[0007] According to the present invention, the following inventions are provided. [1] (A) (meth)acrylic acid / alkyl (meth)acrylate / POE monoalkyl ether (meth)acrylate copolymer, (B) a hydrophilic surfactant, (C) higher alcohols, and (D) Hydrophobic treated colorant An oil-in-water emulsified solid cosmetic comprising: [2] The cosmetic preparation according to [1], wherein the component (A) is selected from the group consisting of acrylates / steareth-20 methacrylate copolymer, acrylates / beheneth-25 methacrylate copolymer, acrylates / steareth-20 methacrylate crosspolymer, and ammonium acryloyldimethyltaurate / beheneth-25 methacrylate crosspolymer. [3] The cosmetic according to [1] or [2], wherein the content of the component (A) relative to the total mass of the oil-in-water emulsion solid cosmetic is 0.01 to 3.0 mass%. [4] The cosmetic preparation according to any one of [1] to [3], wherein the HLB value of the component (B) is 10 or more. [5] The cosmetic preparation according to any one of [1] to [4], wherein the component (B) is a nonionic hydrophilic surfactant. [6] The cosmetic preparation according to any one of [1] to [5], wherein the content of the component (B) relative to the total mass of the oil-in-water emulsion solid cosmetic preparation is 0.1 to 20 mass %. [7] The oil-in-water emulsion solid cosmetic preparation according to any one of [1] to [6], wherein the component (C) is an alcohol having 6 or more carbon atoms. [8] The solid cosmetic according to any one of [1] to [7], wherein the content of component (C) relative to the total mass of the oil-in-water emulsion solid cosmetic is 0.1 to 15 mass%. [9] The cosmetic preparation according to any one of [1] to [8], wherein the component (D) is a powdered pigment having a primary particle diameter of 0.1 μm or more.

[10] The cosmetic preparation according to any one of [1] to [9], wherein the component (D) is blended in the oil phase of the cosmetic preparation.

[11] The cosmetic preparation according to any one of [1] to

[10] , wherein the content of the component (D) relative to the total mass of the oil-in-water emulsion solid cosmetic preparation is 0.1 to 20 mass %.

[12] The cosmetic preparation according to any one of [1] to

[11] , wherein the ratio of the component (A) to the total of the component (B) and the component (C) [A / (B+C)] is 0.01 to 0.1.

[13] The cosmetic preparation according to any one of [1] to

[12] , wherein the ratio of the component (D) to the total of the component (B) and the component (C) [D / (B+C)] is 0.3 to 2.0.

[14] The cosmetic preparation according to any one of [1] to

[13] , which has a rheometer hardness γ of 30 to 150 N measured at 37°C using an 11.3 mmφ needle at a penetration distance of 3 mm. [Effects of the Invention]

[0008] According to the present invention, a water-in-oil emulsion solid cosmetic preparation is provided that combines excellent usability and stability. More specifically, the cosmetic preparation simultaneously achieves good spreadability upon application, easy removal when using a puff, a fresh feeling after application, and high cosmetic stability. Furthermore, this cosmetic preparation also has an excellent elastic feel when applied with a puff or by hand, and achieves a feel in use that has not been achieved with conventional cosmetics. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described in detail.

[0010] The oil-in-water emulsion solid cosmetic preparation according to the present invention (hereinafter simply referred to as the cosmetic preparation) comprises (A) a specific acrylic acid copolymer, (B) a hydrophilic surfactant, (C) a higher alcohol, and (D) a hydrophobic treated coloring material. It contains as an essential component.

[0011] [Specific acrylic acid copolymer] The cosmetic preparation according to the present invention contains a (meth)acrylic acid / alkyl (meth)acrylate / (meth)acrylic acid POE monoalkyl ether ester copolymer as component (A). Hereinafter, this component may be simply referred to as component (A) or the acrylic acid copolymer.

[0012] The (meth)acrylic acid / alkyl (meth)acrylate / POE monoalkyl ether (meth)acrylate copolymer used in the cosmetic composition according to the present invention is: (a1) acrylic acid or methacrylic acid, (a2) alkyl acrylate or alkyl methacrylate, and (a3) esters of acrylic acid or methacrylic acid with polyoxyethylene alkyl ethers; It is a copolymer of

[0013] These are, for example, the names listed in the ICID (International Cosmetic Ingredient Dictionary), Acrylates / Ceteth-20 Methacrylate Copolymer, Acrylates / Steareth-20 Methacrylate Copolymer, Acrylates / Steareth-25 Methacrylate Copolymer, Acrylates / Steareth-50 Methacrylate Copolymer, Acrylates / Beheneth-25 Methacrylate Copolymer, Acrylates / Steareth-20 Methacrylate Crosspolymer, Ammonium Acryloyldimethyltaurate / Beheneth-25 Methacrylate Crosspolymer These are commercially available as aqueous dispersions (polymer emulsions).

[0014] The component (A) in the cosmetic composition according to the present invention includes: Acrylates / steareth-20 methacrylate copolymer (Accurin 22 (trade name); Dow Chemical Japan Co., Ltd.), Acrylates / Beheneth-25 methacrylate copolymer (Accurin 28 (trade name); Dow Chemical Japan Co., Ltd.), Acrylates / steareth-20 methacrylate crosspolymer (Accurin 88 (trade name); Dow Chemical Japan Co., Ltd.), and Ammonium acryloyldimethyltaurate / Beheneth-25 methacrylate crosspolymer (Aristoflex HMB (trade name); Clariant Production UK Ltd.) Among them, acrylates / steareth-20 methacrylate copolymer or acrylates / beheneth-25 methacrylate copolymer is particularly preferred.

[0015] The aqueous dispersion of the acrylic acid copolymer is thickened by diluting with water or the like as necessary and neutralizing it with an alkaline agent. The alkaline agent used to neutralize the aqueous dispersion is not particularly limited, and inorganic bases such as sodium hydroxide and potassium hydroxide, and organic bases such as triethanolamine, isopropanolamine, and basic amino acids can be used.

[0016] The blending amount of component (A) in the cosmetic of the present invention is preferably 0.01 to 3.0 mass% of the total mass of the cosmetic, expressed as the polymer content, more preferably 0.05 to 2.0 mass%, even more preferably 0.1 to 1.4 mass%, and particularly preferably 0.3 to 1.0 mass%. If the blending amount of component (A) is too small, it may be difficult to achieve emulsion stability, while if it is too large, care must be taken because makeup may come off after application of the cosmetic.

[0017] [Hydrophilic surfactants] The hydrophilic surfactant (component (B)) that can be used in the oil-in-water emulsion cosmetic of the present invention is at least one selected from nonionic surfactants and ionic (anionic, cationic, and amphoteric) surfactants. It is preferable to use a nonionic surfactant as the hydrophilic surfactant. It is also preferable that the HLB value of the hydrophilic surfactant used be 10 or higher.

[0018] Nonionic surfactants that can be used in the cosmetics of the present invention can be selected from, for example, polyethylene glycol fatty acid esters, polyoxyethylene fatty acid glyceryl, polyoxyethylene-methylpolysiloxane copolymers, fatty acid polyoxyethylene sorbitan, polyoxyethylene alkyl ethers, maltitol hydroxyaliphatic alkyl ethers, alkylated polysaccharides, alkyl glucosides, sucrose fatty acid esters, polyoxyethylene hydrogenated castor oil glyceryl, polyoxyethylene sorbit fatty acid esters, polyoxyethylene-polyoxypropylene block copolymers, tetrapolyoxyethylene-tetrapolyoxypropylene-ethylenediamine condensates, polyoxyethylene-beeswax-lanolin derivatives, alkanolamides, polyoxyethylene-propylene glycol fatty acid esters, polyoxyethylene-alkylamines, polyoxyethylene-fatty acid amides, alkylethoxydimethylamine oxide, trioleyl phosphate, etc. Among these nonionic surfactants, those with an HLB value of 10 or higher are preferably used.

[0019] Preferred examples of nonionic surfactants with an HLB value of 10 or more include: Polyethylene glycol monostearate (e.g., PEG-40 stearate), Polyoxyethylene sorbitan monostearate (such as polysorbate 60), and Polyoxyethylene Behenyl Ether (Beheneth-20) These nonionic surfactants may be used singly or in combination of two or more. The HLB values ​​of two or more nonionic surfactants are calculated by weighting the HLB values ​​of the respective surfactants according to the blending amounts of the surfactants, and the resulting average is sufficient as long as the resulting value is 10 or greater.

[0020] In the present invention, the hydrophilic surfactant may be an ionic surfactant, which includes anionic surfactants, cationic surfactants, and amphoteric surfactants.

[0021] Examples of anionic surfactants that can be used in the cosmetics of the present invention include, but are not limited to, N-cocoyl glutamate, coconut oil fatty acid methyl taurate, N-caproyl methyl taurate, N-lauroyl methyl taurate, N-myristoyl methyl taurate, N-palmitoyl methyl taurate, N-stearoyl methyl taurate, N-oleoyl methyl taurate, N-cocoyl glutamate, N-lauroyl glutamate, N-myristoyl glutamate, N-palmitoyl glutamate, N-stearoyl glutamate, N-oleoyl glutamate, lauryl phosphate, myristyl phosphate, palmityl phosphate, stearyl phosphate, etc. Preferred counter ions include sodium, potassium, triethanolamine, ammonia, etc.

[0022] Examples of cationic surfactants that can be used in the present invention include, but are not limited to, lauryltrimethylammonium chloride, lauryltrimethylammonium bromide, myristyltrimethylammonium chloride, myristyltrimethylammonium bromide, cetyltrimethylammonium chloride, cetyltrimethylammonium bromide, stearyltrimethylammonium chloride, stearyltrimethylammonium bromide, behenyltrimethylammonium chloride, behenyltrimethylammonium bromide, cetyltrimethylammonium methanesulfonate, stearyltrimethylammonium methosulfate, myristyldimethylbenzylammonium chloride, cetyldimethylbenzylammonium chloride, stearyldimethylbenzylammonium chloride, octyldihydroxyethylmethylammonium chloride, 2-decyltetradecyltrimethylammonium chloride, 2-dodecylhexadecyltrimethylammonium chloride, stearoxypropyltrimethylammonium chloride, and N-(2-hydroxy-3-stearoxypropyl)-N,N-dimethylamine bromide.

[0023] Examples of amphoteric surfactants that can be used in the present invention include, but are not limited to, imidazoline-based amphoteric surfactants such as 2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium and 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt; betaine-based surfactants such as 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauryldimethylaminoacetic acid betaine, alkyl betaine, amido betaine, and sulfobetaine; and cocamidopropyl betaine.

[0024] The cosmetic of the present invention may contain at least one hydrophilic surfactant (B) selected from nonionic surfactants and ionic surfactants, but may also contain a combination of two or more. For example, one preferred embodiment of the present invention contains at least one nonionic surfactant with an HLB value of 10 or more, and further contains at least one nonionic surfactant and an ionic surfactant.

[0025] In the cosmetic according to the present invention, the blending amount of (B) hydrophilic surfactant is preferably 0.1 to 20 mass %, more preferably 0.2 to 10 mass %, and particularly preferably 0.3 to 5 mass %, relative to the total mass of the oil-in-water emulsion cosmetic. If the blending amount of (B) hydrophilic surfactant is too little or too much, sufficient emulsion stability may not be obtained.

[0026] [Higher alcohol] The higher alcohol (component (C)) that can be used in the cosmetic of the present invention is not particularly limited as long as it is a higher alcohol that can be used in the fields of cosmetics, pharmaceuticals, quasi-drugs, etc., preferably an alcohol with 6 or more carbon atoms. This higher alcohol includes linear or branched, saturated or unsaturated monohydric alcohols. Examples of linear alcohols include saturated alcohols such as dodecanol (lauryl alcohol), tridodecanol, tetradodecanol (myristyl alcohol), pentadecanol, hexadecanol (cetyl alcohol), heptadecanol, octadecanol (stearyl alcohol), nonadecanol, icosanol (arachyl alcohol), heneicosanol, docosanol (behenyl alcohol), tricosanol, tetracosanol (carnaubyl alcohol), pentacosanol, hexacosanol (ceryl alcohol), oleyl alcohol, and cetostearyl alcohol, and unsaturated alcohols such as elaidyl alcohol. Examples of branched-chain alcohols include monostearyl glycerin ether (batyl alcohol), 2-decyltetradecinol, lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, and octyldodecanol. Two or more of these higher alcohols can be used in combination. From the viewpoint of stability over time, the cosmetic composition according to the present invention preferably uses saturated linear monohydric alcohols, such as docosanol (behenyl alcohol) or octadecanol (stearyl alcohol), and more preferably uses a combination of these. Furthermore, it is preferable to use a branched-chain alcohol, such as monostearyl glycerin ether (batyl alcohol), in combination with these saturated linear monohydric alcohols or combinations thereof. Most preferably, a combination of docosanol (behenyl alcohol), octadecanol (stearyl alcohol), and monostearyl glycerin ether (batyl alcohol) is preferred.

[0027] Furthermore, it is preferable to use (C) a higher alcohol having a melting point of 60°C or higher, such as behenyl alcohol or stearyl alcohol. The cosmetic of the present invention can use one or more higher alcohols, but when using a mixture of two or more higher alcohols, it is preferable to select a combination that will result in a melting point of the mixture of 60°C or higher.

[0028] In the cosmetic according to the present invention, the blending amount of (C) higher alcohol is preferably 0.1 to 15 mass %, more preferably 1 to 12 mass %, and particularly preferably 3 to 10 mass %, relative to the total mass of the oil-in-water emulsion cosmetic. Care must be taken when the blending amount of (C) higher alcohol is too small or too large, as this may result in insufficient emulsion stability being obtained.

[0029] Such higher alcohols constitute a part of the oil contained in the cosmetic composition according to the present invention.

[0030] [Hydrophobic treated color material] The hydrophobized coloring material (component (D)) that can be used in the cosmetic of the present invention is a color pigment that has been hydrophobized.

[0031] The color pigment can be selected from those that can be generally used in cosmetics. For example, Metal oxides such as titanium oxide, iron oxide (yellow iron oxide, black iron oxide, and red iron oxide), zinc oxide, zinc oxide, cerium oxide, aluminum oxide, chromium oxide, chromium hydroxide, metal complexes such as manganese violet and green spinel (cobalt titanate), as well as inorganic pigments such as carbon black; Organic pigments such as tar-based pigments and lake pigments; and Natural dyes such as carmine Examples include:

[0032] The color pigment to be used can be selected depending on the purpose, but it is preferable to use an inorganic pigment that has a high effect of covering the skin as a cosmetic, and it is more preferable to use titanium oxide, iron oxide, or zinc oxide. Two or more of these color pigments can also be used in combination.

[0033] Such color pigments are known to have various particle sizes. The particle size of the color pigment can be selected depending on the purpose, but a primary particle size of 0.1 μm or more is preferred, and a primary particle size of 0.2 μm or more is more preferred. In addition, fine particle color pigments with a small primary particle size can also be used depending on the purpose.

[0034] In the cosmetic of the present invention, the color pigment used is one that has been hydrophobized. By subjecting the color pigment to hydrophobization treatment, it is possible to reduce the squeaky feeling that may occur when using the cosmetic, improving usability and improving the cosmetic's long-lasting effect after use. Such hydrophobization treatments can be selected from silicone treatments, fluorine treatments, fatty acid treatments, metal soap treatments, N-acylamino acid treatments, and the like. Of these, silicone treatments, fluorine treatments, and N-acylamino acid treatments are preferred because they provide a sticky feel and glossy feel during use, as well as a strong covering effect.

[0035] Specific examples of silicone treatments include methylhydrogenpolysiloxane treatment, dimethylpolysiloxane treatment, and alkylalkoxysilane treatment. Examples of alkylalkoxysilanes used in alkylalkoxysilane treatments include hexyltrimethoxysilane, hexyltriethoxysilane, caprylyltrimethoxysilane, and caprylyltriethoxysilane. Specific examples of the fluorine treatment include a perfluoroalkyl phosphate treatment and a perfluoroalkylalkoxysilane treatment. The N-acylamino acid or salt thereof used in the N-acylamino acid treatment includes a compound in which an acyl group, preferably a saturated fatty acid having 12 to 20 carbon atoms, is condensed with the amino group of the amino acid, or a salt thereof. The amino acid is preferably glutamic acid or aspartic acid. Examples of the N-acyl group include a stearoyl group and a lauroyl group. The salt can be selected from alkali metal salts such as sodium and potassium, and alkaline earth metal salts, with sodium salts being preferred. Specific examples include disodium N-stearoyl glutamate, sodium N-lauroyl glutamate, and sodium lauroyl aspartate. Examples of fatty acid treatments include stearic acid treatment and myristic acid treatment, and examples of N-acyl amino acid treatments include lauroyl lysine treatment, sodium dilauroyl glutamate lysine treatment, disodium stearoyl glutamate treatment, sodium lauroyl aspartate treatment, and the like.

[0036] In the cosmetic according to the present invention, the blending amount of (D) hydrophobized coloring material is preferably 0.1 to 20 mass %, more preferably 2 to 20 mass %, and particularly preferably 4 to 20 mass %, relative to the total mass of the oil-in-water emulsion cosmetic. Caution is required, as if the blending amount of (C) higher alcohol is too small or too large, sufficient emulsion stability may not be obtained.

[0037] In the cosmetic preparation according to the present invention, it is preferable that component (D) is blended in the oil phase of the oil-in-water emulsion solid cosmetic preparation. By subjecting the component (D) blended in the oil phase to hydrophobic treatment, the affinity of component (D) for the oil phase is improved. In the cosmetic preparation according to the present invention, the hydrophobic treated coloring material may be blended into the cosmetic preparation after being kneaded with an oil component, or may be dispersed in the oil phase by blending a dispersant therein, if necessary.

[0038] [Oil-in-water emulsion solid cosmetic] The oil-in-water emulsion solid cosmetic preparation of the present invention contains the above-mentioned components (A) to (D) as essential components. Components (B) and (C) can form an aggregate having a lamellar liquid crystal structure together with the water in the cosmetic preparation. The gel structure of the aggregate maintains its solid shape when left to stand, and is believed to break down and be removable by the application of stress from a puff or the like during use. Therefore, in order to achieve excellent usability, it is desirable to adjust the blending ratio of components (B) and (C).

[0039] First, the ratio of component (A) to the total of components (B) and (C) [A / (B+C)] is preferably 0.01 to 0.1, and more preferably 0.015 to 0.05. Below this ratio, the hardness at the time of molding can be maintained, but the moistness tends to be lost, elasticity decreases, and too much of the makeup comes off the puff, resulting in poor application suitability. Above this ratio, the moistness is more easily felt and elasticity increases, but shape retention is difficult to maintain during repeated use with a puff. Furthermore, the ratio of component (D) to the total of components (B) and (C) [D / (B+C)] is preferably 0.3 to 3.0, and more preferably 0.3 to 2.5. Below this ratio, the makeup effect is inferior, and above this ratio, elasticity decreases and streaks are more likely to be visible during application. By using such a blending ratio, it is possible to achieve excellent usability while maintaining the freshness and moisturizing properties of the oil-in-water emulsion solid cosmetic.

[0040] Furthermore, the oil-in-water emulsified solid cosmetic preparation according to the present invention generally contains water and oil.

[0041] The water used in the cosmetic according to the present invention is not particularly limited and may be purified water, ion-exchanged water, etc. The amount of water blended is preferably 25 to 70% by mass, more preferably 30 to 60% by mass, and particularly preferably 30 to 50% by mass, relative to the total mass of the oil-in-water emulsion cosmetic. If the amount of water blended is outside the above range, the stability of the oil-in-water emulsion cosmetic may decrease, and the fresh feeling when used may be reduced.

[0042] The oil used in the cosmetic preparation of the present invention constitutes part of the internal phase (oil phase) of the oil-in-water emulsion. Component (B) constitutes the oil, but other oils can be combined. The oil that can be combined with the cosmetic preparation of the present invention is not particularly limited and can be selected from hydrocarbon oils, ester oils, silicone oils, oils and fats, fragrances, oil-soluble UV absorbers, and the like, which are commonly used in cosmetics.

[0043] Examples of hydrocarbon oils include liquid paraffin, squalane, squalene, paraffin, isoparaffin, ceresin, isododecane, isohexadecane, ozokerite, pristane, and petrolatum.

[0044] Ester oils include pentaerythrityl tetraethylhexanoate, cetyl ethylhexanoate, jojoba oil, di(phytosteryl / octyldodecyl) lauroyl glutamate, triisostearin, glyceryl diisostearate, triethylhexanoin, phytosteryl / behenyl dimer dilinoleate, phytosteryl / isostearyl / cetyl / stearyl / isostearyl / cetyl / stearyl / behenyl dimer dilinoleate, isopropyl palmitate, phytosteryl macadamia nut fatty acid, tetra(behenate / benzoate / ethyl) Pentaerythrityl hexanoate, ethylhexyl palmitate, myristyl myristate, isopropyl myristate, tripropylene glycol dipivalate, diisopropyl sebacate, isodecyl neopentanoate, octyl octanoate, nonyl nonanoate, cetyl octanoate, octyldodecyl myristate, butyl stearate, hexyl laurate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, 12-hydroxystearic acid Cholesteryl, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, tripropylene glycol pivalate, diisostearyl malate, glycerin di-2-heptylundecanoate, glycerin diisostearate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, pentaerythritol tetra-2-ethylhexanoate, glycerin tri-2-ethylhexanoate, trioctadecanoate Glycerin phosphate, glycerin triisopalmitate, cetyl 2-ethylhexanoate-2-ethylhexyl palmitate, glycerin trimyristate, tri-2-heptylundecanoic acid glyceride, castor oil fatty acid methyl ester, oleyl oleate, acetoglyceride, 2-heptylundecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate,Examples include 2-hexyldecyl palmitate, 2-hexyldecyl adipate, 2-ethylhexyl succinate, and triethyl citrate.

[0045] Examples of silicone oils include linear polysiloxanes (e.g., dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane, etc.), cyclic polysiloxanes (e.g., octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, etc.), silicone resins that form a three-dimensional network structure, silicone rubber, various modified polysiloxanes (amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, fluorine-modified polysiloxane, etc.), and acrylic silicones.

[0046] Examples of liquid oils and fats include linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, camellia oil, castor oil, safflower oil, rapeseed oil, soybean oil, peanut oil, triglycerin, turtle oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, cottonseed oil, perilla oil, tea seed oil, kaya oil, rice bran oil, Chinese tung oil, Japanese tung oil, jojoba oil, germ oil, etc. Examples of solid oils and fats include cacao butter, coconut oil, horse tallow, hardened coconut oil, palm oil, beef tallow, mutton tallow, hardened beef tallow, palm kernel oil, lard, beef bone fat, Japan wax kernel oil, hardened oil, beef trotter fat, Japan wax, and hardened castor oil.

[0047] Fragrances include, but are not limited to, natural fragrances obtained from animals or plants, synthetic fragrances produced by chemical synthesis, and blended fragrances that are mixtures thereof. By blending fragrances, cosmetics with excellent fragrance longevity can be obtained. Specific examples of fragrances include acetibenol, anisaldehyde, anethole, amyl acetate, amyl salicylate, allyl amyl glycolate, allyl caproate, aldehydes C6-20, ambrettolide, ambroxan, ionone, isoe super, eugenol, auranthiol, galaxolide, calone, coumarin, geraniol, geranyl acetate, sandaloa, santalol, sandera, cyclamen aldehyde, cis-3-hexenyl acetone, and the like. Citric acid, cis-3-hexenol, citral, citronellyl acetate, citronellol, cineole, dihydromyrcenol, jasmolactone, cinnamic alcohol, cinnamic aldehyde, styrallyl acetate, cedryl acetate, cedrol, damascone, damascenone, decalactone, terpinyl acetate, terpineol, tonalid, triplal, nerol, bacdanol, vanillin, hydroxycitronellal, phenylethyl acetate, phenyl Nylethyl Alcohol, Hexyl Salicylate, Vetiveryl Acetate, Hedione, Heliotropin, Helional, Vertofix, Benzyl Acetate, Benzyl Salicylate, Benzyl Benzoate, Pentalid, Bornyl Acetate, Myall, Musk Ketone, Methyl Anthranilate, Methyl Dihydrojasmonate, Yara Yara, Lime Oxide, Linalyl Acetate, Linalool, Limonene, Lyral, Lilial, Rose Oxide, Rhodinol, Angelica Oil le, anise oil, armoise oil, basil oil, bay oil, bergamot oil, calamus oil, camphor oil, cananga oil, cardamom oil, cassia oil, cedarwood oil, celery oil, chamomile oil, cinnamon oil, clove oil, coriander oil, cumin oil, dill oil, elemi oil, estragon oil, eucalyptus oil, fennel oil, fenugreek oil, galbanum oil, geranium oil, ginger oil,Grapefruit oil, Gaiac wood oil, Hiba oil, Cypress oil, Juniper berry oil, Lavandin oil, Lavender oil, Lemon oil, Lime oil, Mandarin oil, Ziram oil, Fir oil, Peppermint oil, Spearmint oil, Mill oil, Myrtle oil, Nutmeg oil, Oakmoss oil, Olibanum oil, Opoponax oil, Orange oil, Parsley oil, Patchouli oil, Pepper oil, Perilla oil, Petitgrain oil, Neroli oil, Orange flower oil, Pimento oil, Allspice oil, Pine oil, Rose oil Examples of essential oils include rosemary oil, clary sage oil, sage oil, sandalwood oil, styrax oil, tagetes oil, thyme oil, tuberose oil, valerian oil, vetiver oil, violet leaf oil, wintergreen oil, wormwood oil, ylang-ylang oil, yuzu oil, cassie absolute, genet absolute, hyacinth absolute, inmortelle absolute, jasmine absolute, jonquil absolute, narcissus absolute, rose absolute, violet leaf absolute, and benzoin.

[0048] Examples of oil-soluble UV absorbers include benzoic acid-based UV absorbers such as para-aminobenzoic acid (PABA), PABA monoglycerin ester, N,N-dipropoxy PABA ethyl ester, N,N-diethoxy PABA ethyl ester, N,N-dimethyl PABA ethyl ester, and N,N-dimethyl PABA butyl ester; anthranilic acid-based UV absorbers such as homomenthyl-N-acetylanthranilate; amyl salicylate, menthyl salicylate, homomenthyl salicylate, and octyl salicylate; salicylic acid-based ultraviolet absorbers such as phenyl salicylate, phenyl salicylate, benzyl salicylate, and p-isopropanol phenyl salicylate; octyl cinnamate, ethyl 4-isopropyl cinnamate, methyl 2,5-diisopropyl cinnamate, ethyl 2,4-diisopropyl cinnamate, methyl 2,4-diisopropyl cinnamate, propyl p-methoxycinnamate, isopropyl p-methoxycinnamate, isoamyl p-methoxycinnamate, octyl Cinnamic acids such as 2-ethylhexyl-p-methoxycinnamate, 2-ethylhexyl-p-methoxycinnamate, 2-ethoxyethyl-p-methoxycinnamate, cyclohexyl-p-methoxycinnamate, ethyl-α-cyano-β-phenylcinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glyceryl mono-2-ethylhexanoyl-di-paramethoxycinnamate, and 3-methyl-4-[methylbis(trimethylsiloxy)silyl]butyl 3,4,5-trimethoxycinnamate. Examples of acid-based ultraviolet absorbers include 2-phenyl-5-methylbenzoxazole, 2,2'-hydroxy-5-methylphenylbenzotriazole, 2-(2'-hydroxy-5'-t-octylphenyl)benzotriazole, 2-(2'-hydroxy-5'-methylphenylbenzotriazole, dibenzalazine, dianisoylmethane, 4-methoxy-4'-t-butyldibenzoylmethane, 5-(3,3-dimethyl-2-norbornylidene)-3-pentan-2-one, and octocrylene.

[0049] The amount of oil in the cosmetic according to the present invention is not particularly limited, but is preferably 5 to 50% by mass, more preferably 10 to 40% by mass, and even more preferably 15 to 40% by mass, relative to the total mass of the cosmetic.

[0050] The oil component in the present invention preferably contains an oil component that is liquid at room temperature (25°C). Solid oil components such as Japan wax may also be blended, provided that the blending amount does not impair the effects of the present invention. For example, the blending amount of solid oil components (wax, etc.) is generally less than 5.0% by mass, preferably 3.0% by mass or less, and more preferably 1.0% by mass or less, relative to the total mass of the cosmetic. The cosmetic composition according to the present invention also includes embodiments that do not contain wax.

[0051] The cosmetic composition according to the present invention may contain other optional components as needed. Such components include, for example, (a) Water-soluble ultraviolet absorbers (e.g., 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4-phenylbenzophenone, 2-ethylhexyl-4'-phenylbenzophenone, benzophenone-based ultraviolet absorbers such as 1-benzophenone-2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, 4-hydroxy-3-carboxybenzophenone, etc.; benzimidazole-based ultraviolet absorbers such as phenylbenzimidazole-5-sulfonic acid and its salts, phenylene-bis-benzimidazole-tetrasulfonic acid and its salts, 3-(4'-methylbenzylidene)-d,l-camphor, 3-benzylidene-d,l-camphor, urocanic acid, urocanic acid ethyl ester, etc.); (b) humectants (e.g., 1,3-butylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, hexylene glycol, glycerin, diglycerin, xylitol, maltitol, maltose, D-mannite, etc.); (c) Powder ingredients (those other than ingredient (D) that can be blended into the aqueous phase to adjust the usability of the cosmetic), (for example, inorganic powders (for example, talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, lepidolite, biotite, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorine phosphate, cellulose, hydroxyapatite, ceramic powder, metal soap (e.g., zinc myristate, calcium palmitate, aluminum stearate), lauroyl lysine, boron nitride, etc., organic powder (e.g., polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene powder, styrene-acrylic acid copolymer resin powder, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, etc.), inorganic white pigment (e.g., titanium dioxide, zinc oxide, etc.), inorganic red pigment (e.g., iron oxide (red iron oxide), titanic acid Iron, etc.), inorganic brown pigments (for example, γ-iron oxide, etc.), inorganic yellow pigments (for example, yellow iron oxide, ochre, etc.), inorganic black pigments (for example, black iron oxide, low-order titanium oxide, etc.), inorganic purple pigments (for example, mango violet, cobalt violet, etc.), inorganic green pigments (for example, chromium oxide, chromium hydroxide, cobalt titanate, etc.), inorganic blue pigments (for example, ultramarine, Prussian blue, etc.), pearl pigments (for example, titanium oxide coated mica, titanium oxide coated bismuth oxychloride, titanium oxide coated talc, colored titanium oxide coated mica, bismuth oxychloride, fish scale foil, etc.), metal powder pigments (e.g., aluminum powder, copper powder, etc.), organic pigments such as zirconium, barium or aluminum lake (e.g., organic pigments such as Red 201, Red 202, Red 204, Red 205, Red 220, Red 226, Red 228, Red 405, Orange 203, Orange 204, Yellow 205, Yellow 401, and Blue 404, Red 3, Red 104, Red 106, Red 227, Red 230, Red 401, Red 505, Orange 205, Yellow 4, Yellow 5, Yellow 202, Yellow 203,Green No. 3 and Blue No. 1, etc.), natural pigments (e.g., chlorophyll, beta-carotene, etc.); (d) hydrophilic thickeners (e.g., polysaccharides such as gella gum, xanthan gum, and agar, copolymers containing 2-acrylamido-2-methylpropanesulfonic acid, synthetic polymer compounds such as (dimethylacrylamide / sodium acryloyldimethyltaurate) crosspolymer, hydroxyethyl acrylate / sodium acryloyldimethyltaurate copolymer, and (sodium acrylate / sodium acryloyldimethyltaurate) copolymer, clay minerals, etc.); (e) lipophilic thickeners; (f) lower alcohols (fewer than six carbon atoms); (g) antioxidants (for example, tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallic acid esters, etc.; examples of antioxidant aids include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate, phytic acid, ethylenediaminetetraacetic acid, etc.); Preservatives (methylparaben, ethylparaben, butylparaben, phenoxyethanol, etc.); (h) anti-inflammatory agents (e.g., glycyrrhizinic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.); (i) Skin whitening agents (e.g., saxifrage extract, arbutin, tranexamic acid, potassium 4-methoxysalicylate, ascorbic acid glucoside, niacinamide, etc.); (j) various extracts (e.g., Phellodendron bark, Coptis chinensis, Lithospermum root, Peony, Swertia japonica, Birch, Sage, Loquat, Carrot, Aloe, Mallow, Iris, Grape, Job's tears, Loofah, Lily, Saffron, Cnidium rhizome, Angelica acutiloba, Hypericum perforatum, Ononis, Garlic, Chili pepper, Chimpi toki, Seaweed, etc.); Enhancers (e.g., royal jelly, photosensitizers, cholesterol derivatives, etc.); (k) blood circulation promoters (e.g., nonylic acid valenilamide, nicotinic acid benzyl ester, nicotinic acid β-butoxyethyl ester, capsaicin, zingerone, cantharides tincture, ichthammol, tannic acid, α-borneol, tocopherol nicotinate, inositol hexanicotinate, cyclandelate, cinnarizine, tolazoline, acetylcholine, verapamil, cepharanthine, γ-oryzanol, etc.); (l) antiseborrheic agents (e.g., sulfur, thianthol, etc.); (m) anti-inflammatory agents (e.g., tranexamic acid, thiotaurine, hypotaurine, etc.); (n) oil-soluble film-forming agents (for example, PVP-based film-forming agents such as PVP / dimethylaminoethyl methacrylate copolymer, PVP / eicosene copolymer, PVP / ethyl methacrylate / methacrylic acid copolymer, PVP / hexadecene copolymer, PVP / VA copolymer, PVP / vinyl acetate / itaconic acid copolymer, and styrene / PVP copolymer; ethyl acrylate / acrylic acid amide / acrylic acid copolymer, ethyl acrylate / butyl acrylate copolymer, ethyl acrylate / ethyl methacrylate copolymer, ethyl acrylate / methacrylic acid copolymer, ethyl acrylate / methyl methacrylate copolymer, octyl acrylate / vinyl acetate copolymer, octyl acrylate / styrene copolymer, butyl acrylate / vinyl acetate copolymer, butyl acrylate / ethyl hydroxymethacrylate copolymer, and butyl acrylate / methyl methacrylate copolymer); Acrylic coatings such as copolymers, methoxyethyl acrylate / hydroxyethyl acrylate / butyl acrylate copolymers, lauryl acrylate / vinyl acetate copolymers, polyethyl acrylate, polybutyl acrylate, and polystyrene-acrylic acid resins; vinyl acetate coatings such as polyvinyl acetate; methacrylic acid coatings such as polymethyl methacrylate, methyl methacrylate / butyl acrylate / octylic acrylate, and diethyl vinyl pyrrolidone sulfate / N,N'-dimethylamino methacrylic acid copolymers; vinyl methyl ether coatings such as vinyl methyl ether / ethyl maleate copolymers and vinyl methyl ether / butyl maleate copolymers; styrene coatings such as styrene / methylstyrene / indene copolymers; alkyd resin coatings such as cyclohexane-based alkyd resins; silicone resin coatings such as trimethylsiloxysilicate; (o) water-soluble film-forming agents (e.g., hydroxyethyl cellulose, polyvinyl alcohol, polyvinylpyrrolidone, vinylpyrrolidone-vinyl acetate copolymer, polyethylene glycol, etc.); and (p) amino acids or peptides (e.g., glutamic acid, glycine, serine, alanine, arginine, lysine, hydroxypurine, glycylglycine, and salts thereof); etc.

[0052] The cosmetic according to the present invention contains the above-mentioned ingredients, and is molded into a product. The form of the cosmetic according to the present invention is not particularly limited, and may be, for example, a makeup base, foundation, face powder, blush, lipstick, mascara, eye shadow, eyeliner, etc. In particular, it is preferable that the molded cosmetic is housed in a compact container. The water-in-oil emulsified solid cosmetic according to the present invention has an appropriate hardness, which makes it easy to apply to a puff or the like, and it is characterized by its ability to spread evenly when applied to the skin. More specifically, the cosmetic according to the present invention preferably has a rheometer hardness γ of 30 to 150 N, preferably 40 to 130 N.

[0053] In the present invention, the rheometer hardness γ is measured using a rheometer (manufactured by Fudo Kogyo Co., Ltd.) as follows: Load weight: 2kg Needle diameter: 11.3mmφ Needle insertion speed: 2cm / min Penetration distance: 3mm Measurement temperature: 37℃ The value calculated from the measured values ​​obtained under the above conditions according to the following formula was taken as the hardness γ. γ=(G*L) / (l*a) (dyn / cm 2 ) (In the formula, G: Measured stress (gr) x 980 dyn L: Sample thickness (mm) l: Compression distance (mm) a: needle cross-sectional area (cm 2 ))

[0054] The hardness varies depending on the measurement conditions, for example, the diameter of the needle. When the diameter of the needle is changed to 8 mm from the above conditions, the rheometer hardness of the cosmetic material according to the present invention is preferably 30 to 100 N.

[0055] The method for producing the oil-in-water emulsified solid cosmetic preparation of the present invention is not particularly limited, and any method can be used. For example, the preparation can be produced by separately preparing an oil component containing an oil, a higher alcohol, a hydrophobized colorant, etc., and an aqueous component containing water, a specific copolymer, etc., and then mixing the mixture and emulsifying it by a conventional method.

[0056] The oil-in-water emulsified solid cosmetic preparation according to the present invention can be provided as a makeup cosmetic such as a foundation, a UV care cosmetic such as a sunscreen, or a skin care cosmetic, taking advantage of its characteristics such as easy application, a moist feel, and excellent moisturizing effect.

[0057] [Example] The present invention will be described in more detail below with reference to examples, but the present invention is not limited thereto. Unless otherwise specified, the blending amounts are expressed as % by mass relative to the total mass of the cosmetic.

[0058] Oil-in-water emulsion cosmetics having the compositions shown in Table 1 below were prepared and evaluated for the following items. The results are also shown in Table 1. (1)Hardness 24 hours after preparation of the cosmetic, the hardness was measured using a rheometer (manufactured by Rheotec) under the conditions of a pressure-sensitive shaft of 11.3φ, a penetration of 3 mm, and a penetration speed of 20 mm / min. (2) High temperature stability The filled compact was kept upright at 45°C for two weeks, after which the properties of the cosmetic were visually inspected and evaluated under the following conditions. Evaluation criteria A: No surface warping is observed on the filling surface, and the original condition is maintained. B: There is slight wrinkling on the filling surface. C: Surface wrinkles are observed on the filling surface. D: The filling surface is not maintained and wrinkles are observed. (3) Absorbency onto puff, (4) Moisture, (5) No streaks during application, and (6) Elasticity The manufactured cosmetic products (samples) were actually used by a panel of three experts, who evaluated each performance on a four-point scale. (3) Removal of the puff A: The amount of powder on the puff is just right. B: A little too much (a little) powder adheres to the puff. C: A lot (little) of puff adhesion D: Too much (too little) powder on the puff (4) Freshness, A: I feel a great sense of freshness. B: Feels fresh C: Not very fresh D: It doesn't feel fresh. (5) No streaks or unevenness during application A: It spreads very evenly without streaking during application. B: It spreads evenly without streaking during application. C: Slight streaks appear during application and it is difficult to spread evenly. D: Streaks appear during application and it is difficult to spread evenly. (6) Elasticity A: I feel a great sense of elasticity. B: It feels elastic. C: I don't feel much elasticity. D: I don't feel any elasticity.

[0059] [Table 1]

[0060] [Prescription example] Other cosmetic formulation examples according to the present invention are shown below. These cosmetic formulations also had the excellent properties according to the present invention.

[0061] [Table 2]

Claims

1. (A) (meth)acrylic acid / alkyl (meth)acrylate / POE monoalkyl ether (meth)acrylate copolymer, (B) a hydrophilic surfactant, (C) a higher alcohol, and (D) Hydrophobic treated colorant An oil-in-water emulsion solid cosmetic comprising: the ratio of the component (A) to the total of the component (B) and the component (C), [A / (B+C)], is 0.01 to 0.1; A cosmetic preparation in which the ratio of the component (D) to the total of the component (B) and the component (C), [D / (B+C)], is 0.3 to 2.

0.

2. 2. The cosmetic preparation according to claim 1, wherein the component (A) is selected from acrylates / steareth-20 methacrylate copolymer, acrylates / beheneth-25 methacrylate copolymer, acrylates / steareth-20 methacrylate crosspolymer, and ammonium acryloyldimethyltaurate / beheneth-25 methacrylate crosspolymer.

3. 3. The cosmetic according to claim 1, wherein the content of component (A) relative to the total mass of the oil-in-water emulsion solid cosmetic is 0.01 to 3.0 mass%.

4. The cosmetic preparation according to any one of claims 1 to 3, wherein the HLB value of the component (B) is 10 or more.

5. The cosmetic preparation according to any one of claims 1 to 4, wherein the component (B) is a nonionic hydrophilic surfactant.

6. 6. The cosmetic preparation according to claim 1, wherein the content of component (B) relative to the total mass of the oil-in-water emulsion solid cosmetic preparation is 0.1 to 20 mass%.

7. 7. The oil-in-water emulsified solid cosmetic preparation according to claim 1, wherein component (C) is an alcohol having 6 or more carbon atoms.

8. 8. The solid cosmetic according to claim 1, wherein the content of component (C) relative to the total mass of the oil-in-water emulsion solid cosmetic is 0.1 to 15 mass%.

9. The cosmetic preparation according to any one of claims 1 to 8, wherein the component (D) is a powdered pigment having a primary particle diameter of 0.1 µm or more.

10. The cosmetic according to any one of claims 1 to 9, wherein the component (D) is blended in an oil phase of the cosmetic.

11. 11. The cosmetic according to claim 1, wherein the content of component (D) relative to the total mass of the oil-in-water emulsion solid cosmetic is 0.1 to 20 mass%.

12. The cosmetic preparation according to any one of claims 1 to 11, which has a rheometer hardness γ of 30 to 150 N measured at 37°C using an 11.3 mmφ needle at a penetration distance of 3 mm.

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