Water-in-oil emulsion cosmetic and method for producing same

Abstract

The present invention addresses the problem of providing an excellent water-in-oil emulsion cosmetic which has excellent smooth spreadability, moderate film formation speed of a cosmetic film, uniformity of the cosmetic film immediately after application, and no change in the cosmetic film after 10 minutes after application. A water-in-oil type emulsion cosmetic which solves the problem of the present invention is characterized by containing the following components (A) to (F): (A) a volatile hydrocarbon oil; (B) a metal oxide surface-treated with a hydrophobizing agent; (C) one or more substances selected from the group consisting of an oil agent, a surfactant, and an oil-phase thickener, which are solid at 25 DEG C; (D) a nonionic surfactant that is liquid at 25 DEG C; (E) a non-volatile oil agent that is liquid at 25 DEG C; and (F) water and / or ethanol, the total content of the component (A) and the component (F) being 20-70 mass%, the ratio (B) / [(A) + (F)] of the content of the component (B) to the total content of the component (A) and the component (F) being 0.08-1.5, and the content of the component (B) being less than or equal to the total content of the component (A) and the component (F). And one or more components (C) selected from the group consisting of higher alcohols, fatty acids or salts thereof, ether oils, hydrocarbon oils, fatty acid esters, ceramides, sterols, phospholipids, vegetable fats, animal fats, dextrin fatty acid esters, sucrose fatty acid esters, inulin fatty acid esters, and oil-soluble polyurethanes.

Description

Technical Field

[0001] The present invention relates to a water-in-oil emulsion cosmetic and a method for producing the same. Background Art

[0002] Water-in-oil emulsion cosmetics have excellent characteristics such as moisturizing effect, moisture retention effect, and makeup retention property on the skin, and can be used for skin care cosmetics, sunscreen cosmetics, makeup cosmetics, etc. To date, various studies have been conducted on the feel in use and the makeup film after application as important factors in water-in-oil emulsion cosmetics.

[0003] For example, there is a technology as follows: a water-in-oil emulsion composition containing 15 to 30% by mass of a pigment, wherein, by a water-in-oil emulsion composition containing an organically modified clay mineral, (behenic acid / eicosanedioic acid) glycerol ester, poly(12-hydroxy stearic acid) ester, a surfactant, and an oil agent, a water-in-oil emulsion composition in which color unevenness, white streaks, and oil separation do not occur in a water-in-oil emulsion composition in which the pigment is blended at a high concentration (for example, see Patent Document 1).

[0004] In addition, there is a technology as follows: a water-in-oil emulsion sunscreen cosmetic containing hydrophobized silica-coated fine particle zinc oxide, a volatile hydrocarbon oil component, and volatile dimethicone has high ultraviolet ray defensive power but no unpleasant odor peculiar to sunscreen cosmetics, is smooth and has good spreadability during application without a feeling of skin dryness, and does not produce a sticky feeling after application (for example, see Patent Document 2).

[0005] Moreover, there is a technology as follows: a water-in-oil emulsion cosmetic containing a specific amount of spherical organic resin powder having a specific average particle size surface-treated with a perfluoroalkylsilane, a crosslinked organopolysiloxane, and a monoester oil that is liquid at 25°C has less caking feeling at the initial stage of application when repeatedly applying foundation with a powder puff, has excellent spreadability during application, suppresses stripe unevenness immediately after application, has excellent covering power and can obtain a firm feeling of the skin, and suppresses the significance of skin roughness (for example, see Patent Document 3).

[0006] Prior Art Documents

[0007] Patent Documents

[0008] Patent Document 1: Japanese Patent Application Laid-Open No. 2017-178848;

[0009] Patent Document 2: Japanese Patent Application Laid-Open No. 2014-97935;

[0010] Patent Document 3: Japanese Patent Application Laid-Open No. 2016-160217. Summary of the Invention

[0011] Problems to be Solved by the Invention

[0012] However, for example, in the prior arts such as Patent Documents 1 to 3, although effects related to the spreading usability, the stripe-free non-uniformity of the makeup film immediately after coating, or the good makeup appearance are exhibited, there are cases where if the smooth spreading property is excessive, it will compromise the appropriate film formation of the makeup film, etc., forming a trade-off relationship, and it is difficult to have both these effects. In addition, although there are cases where the makeup film immediately after coating or the long-lasting property after several hours is evaluated, the importance of the makeup film remaining unchanged within a short period of about 10 minutes after coating has not been previously noticed. That is, even if a satisfactory makeup appearance is obtained immediately after coating when confirmed with a mirror, in the case where it takes some time for the volatile components to completely volatilize, the components remaining due to volatilization move on the skin, and the amount of the oil agent as the volatile component itself changes, resulting in an impact on the makeup appearance, etc., and thus there are problems such as changes in the makeup film and actually not being able to obtain a satisfactory makeup appearance, which are difficult to notice by oneself.

[0013] Means for Solving the Problems

[0014] In view of such a situation, the present inventors conducted in-depth research on water-in-oil type emulsified cosmetics in order to achieve excellent quality with both smooth spreading property, appropriate film formation speed of the makeup film, uniformity of the makeup film immediately after coating, and non-changeability of the makeup film 10 minutes after coating. As a result, it was found that by combining a volatile hydrocarbon oil, a metal oxide that can be surface-treated with a hydrophobizing agent, one or more selected from an oil agent and an oil phase thickener that are solid at 25°C, a nonionic surfactant and / or an anionic surfactant having a polyhydroxy fatty acid group (especially a metal oxide surface-treated with one or more selected from an alkyl group having 8 to 24 carbon atoms, an alkoxy group, an acyl group, and an acylamino group, a glycerol fatty acid ester, a polyglycerol fatty acid ester, and a surfactant having a polyhydroxy fatty acid group), a non-volatile oil agent that is liquid at 25°C, and water and / or ethanol in a specific content or ratio, a water-in-oil type emulsified cosmetics with the above excellent quality can be achieved, and the present invention was completed based on these insights.

[0015] That is,

[0016] [1] A water-in-oil type emulsified cosmetics, which contains the following components (A) to (F):

[0017] (A) A volatile hydrocarbon oil;

[0018] (B) A metal oxide that can be surface-treated with a hydrophobizing agent;

[0019] (C) One or more selected from an oil agent, a surfactant, and an oil phase thickener that are solid at 25°C;

[0020] (D) A nonionic surfactant that is liquid at 25°C and / or an anionic surfactant having a polyhydroxy fatty acid group;

[0021] (E) A non-volatile oil agent that is liquid at 25°C;

[0022] (F) Water and / or ethanol,

[0023] wherein the total mass content of the components (A) and (F) is 25 to 70% by mass, and the mass content ratio of the component (B) to the total mass content of the components (A) and (F), (B) / [(A)+(F)], is 0.08 to 1.5.

[0024] The component (C) is one or more selected from higher alcohols, fatty acids or their salts, ether oils, hydrocarbon oils, fatty acid esters, ceramides, sterols, phospholipids, vegetable fats, animal fats, dextrin fatty acid esters, sucrose fatty acid esters, inulin fatty acid esters, and oil-soluble polyurethanes.

[0025] [2][1] The water-in-oil emulsion cosmetic according to the above, wherein the component (D) is one or more selected from glycerol fatty acid esters, polyglycerol fatty acid esters, and surfactants having a polyhydroxy fatty acid group.

[0026] [3][1] or [2] The water-in-oil emulsion cosmetic according to the above, wherein the hydrophobizing agent of the component (B) has one or more selected from alkyl groups, alkoxy groups, acyl groups, and acylamino groups having 8 to 24 carbon atoms.

[0027] [4][1] to [3] The water-in-oil emulsion cosmetic according to any one of the above, wherein the component (C) is one or more selected from fatty acid salts, ceramides, phospholipids, vegetable fats, animal fats, hydrogenated polyolefins, oil-soluble polyurethanes, dextrin fatty acid esters, and inulin fatty acid esters.

[0028] [5][1] to [4] The water-in-oil emulsion cosmetic according to any one of the above, which further contains an oil-soluble film-forming agent as the component (G).

[0029] [6][1] to [5] The water-in-oil emulsion cosmetic according to any one of the above, wherein the hydrophobizing agent of the component (B) is one or more selected from alkylalkoxysilanes, polyglycerol fatty acid esters, acyl amino acids or their salts, and fatty acids or their salts.

[0030] [7][1] to [6] The water-in-oil emulsion cosmetic according to any one of the above, wherein the mass content ratio of the component (B) to the component (C) is (B) / (C) = 5 to 300.

[0031] [8] Method for manufacturing a water-in-oil type emulsified cosmetic, the water-in-oil type emulsified cosmetic containing the following components (A) to (F):

[0032] (A) Volatile hydrocarbon oil;

[0033] (B) Metal oxide that can be surface-treated with a hydrophobizing agent;

[0034] (C) One or more selected from oil agents, surfactants, and oil phase thickeners that are solid at 25°C;

[0035] (D) Nonionic surfactant and / or anionic surfactant having a polyhydroxy fatty acid group that are liquid at 25°C;

[0036] (E) Non-volatile oil agent that is liquid at 25°C;

[0037] (F) Water and / or ethanol,

[0038] wherein the component (C) is one or more selected from higher alcohols, fatty acids or their salts, ether oils, hydrocarbon oils, fatty acid esters, ceramides, sterols, phospholipids, vegetable fats, animal fats, dextrin fatty acid esters, sucrose fatty acid esters, inulin fatty acid esters, and oil-soluble polyurethanes,

[0039] The method for manufacturing the water-in-oil type emulsified cosmetic includes the following steps (1) and (2):

[0040] Step (1): A step of heating and dissolving the component (C) in all or a part of the component (E) at 35 to 100°C to obtain an intermediate treatment product (1);

[0041] Step (2): A step of adding the component (B) to the intermediate treatment product (1) and performing high-shear dispersion treatment to obtain an intermediate treatment product (2).

[0042] Advantages of the Invention

[0043] Through the present invention, a water-in-oil type emulsified cosmetic can be provided, which has excellent smooth spreadability, appropriate film-forming speed of the cosmetic film, uniformity of the cosmetic film immediately after coating, and non-changeability of the cosmetic film 10 minutes after coating. Description of the Drawings

[0044] Figure 1 is a diagram showing an observation image of the non-changeability (cheek part) of the cosmetic film 10 minutes after coating in Example 1 and Comparative Example 1.

[0045] Figure 2 is a photographed image immediately after coating in Example 1 and Comparative Example 4. (Comparison photo around the nose) ​​

[0046] Figure 3 is the captured image just after coating in Example 1 and Example 10. (Comparison photo around the nose wing: different processes) Detailed implementation manners

[0047] ​The component (A) volatile hydrocarbon oil used in the present invention is a hydrocarbon oil having a boiling point of 260 °C or lower under normal pressure. There is no particular limitation on such volatile hydrocarbons, and examples thereof include: hydrocarbons having side chains such as isooctane, isododecane, isohexadecane, and isoeicosene; straight-chain hydrocarbons such as decane, undecane, dodecane, tridecane, and (C9-12) alkanes, isoparaffins, or mixtures thereof; light liquid isoparaffins obtained by polymerizing or copolymerizing isobutene, n-butene, etc. (the degree of polymerization is preferably 4 to 6) and then hydrogenating them. Depending on the need, one kind or a combination of two or more kinds can be used. As commercially available products, examples include: MARUKASOL R (manufactured by Maruzen Petrochemical Co., Ltd.); CETIOL (registered trademark) ULTIMATE (manufactured by BASF Japan Ltd.); ARLAMOL HD (CRODA Japan); IP Solvent 1620, IP Solvent 2028 (both manufactured by Idemitsu Petrochemical Co., Ltd.); DEDRAFLOW 5 (manufactured by CIT Co., Ltd.); PERMETHYL 99A (manufactured by PRESPERS Co., Ltd.); AEC isododecane (manufactured by A and E Connock (Perfumery and Cosmetics) Ltd.); Creasil ID CG (manufactured by CIT Sarl); Fancol ID (manufactured by Elementis Specialties); Oristar IDD (manufactured by Orient Stars LLC); Permethyl 99A (manufactured by Presperse Corp); ISODODECANE (manufactured by IMCD INEOS Oligomers); Ritacane ID (manufactured by Rita Corporation); Jeechem NDA-LC (manufactured by Jeen International Corporation); PARAFOL 12RSPO-MB, PARAFOL 14RSPO-MB (manufactured by SASPL Germany GmbH); SMART C5, SILKFLO 362 (manufactured by IMCD Japan Co., Ltd.); DEDRAFLOW 5, Creasil IHCG (manufactured by CIT SARL), etc. Among these, from the viewpoints of smooth spreading property and appropriate film-forming speed of the cosmetic film, one kind or two or more kinds selected from saturated hydrocarbon oils having side chains with 4 to 18 carbon atoms, isododecane, (C9-12) alkanes, tetradecane, isohexadecane, hydrogenated polyisobutene, and undecane / tridecane are preferred, and isododecane is further preferred.Examples of commercially available products of these volatile hydrocarbon oils include IP Solvent 1620MU and IP Solvent 2028MU (both manufactured by Idemitsu Kosan Co., Ltd.); Isopar (manufactured by ExxonMobil Chemical Company); MARUKASOL R (manufactured by Maruzen Petrochemical Co., Ltd.); PARAFOL 12RSPO-MB and PARAFOL 14RSPO-MB (SASPL Germany GmbH), etc.

[0048] There is no particular limitation on the content of component (A) used in the present invention. Relative to the total amount of the cosmetic, the lower limit is preferably 3% by mass (hereinafter referred to as %), more preferably 4% or more, and still more preferably 5% or more. The upper limit is preferably 16% or less, more preferably 10% or less, and still more preferably 9% or less. The range is preferably 3 to 16%, more preferably 5 to 10%. If it is within this range, the smooth spreading property, the appropriate film-forming speed of the cosmetic film, and the non-change property of the cosmetic film 10 minutes after coating are more excellent, so it is more preferred.

[0049] The metal oxide for which component (B) used in the present invention can be surface-treated with a hydrophobizing agent is a substance obtained by surface-treating a metal oxide with a known hydrophobizing agent for hydrophobization. There is no particular limitation on the degree of hydrophobization. The hydrophobizing agent and the metal oxide are described separately as follows.

[0050] As the metal oxide serving as the matrix, as long as it is a metal oxide commonly used in cosmetics, it is not particularly limited by the shape such as spherical, plate-like, needle-like, etc., the particle size such as fumed, particulate, pigment grade, etc., the particle structure such as porous, non-porous, etc., and any one can be used. For example, oxides of elements such as Al (aluminum), Mg (magnesium), Sn (tin), Zn (zinc), Co (cobalt), Fe (iron), Zr (zirconium), Ti (titanium), and Ce (cerium) can be used. The metal oxide for component (B) of the present invention has the functions of coloring the skin, imparting hiding power, or imparting ultraviolet ray shielding ability in cosmetics. Specifically, examples include: aluminum oxide, magnesium oxide, tin oxide, zinc oxide, iron oxide yellow, iron oxide red, iron oxide black and other iron oxides, titanium dioxide, cerium oxide, etc. These can be used alone or in combination of two or more. Among these, one or more selected from zinc oxide, titanium dioxide, and iron oxide are preferred, and zinc oxide and / or titanium dioxide are more preferred. As commercially available products of the metal oxide serving as the matrix for component (B) of the present invention, in the case of titanium oxide, examples include: TIPAQUE CR-50 (manufactured by Ishihara Sangyo Co., Ltd., average particle size 0.25 μm); TIPAQUE PFC 407 (manufactured by Ishihara Sangyo Co., Ltd., average particle size 0.25 μm); FTL-100 (manufactured by Ishihara Sangyo Co., Ltd., needle-like, fiber length 0.168 μm, fiber diameter 0.13 μm); MT-700B (average particle size 0.8 μm), MP-1133 (average particle size 0.25 μm); MP-40 (average particle size 0.4 μm), MP-100 (average particle size 1 μm), etc. (all of the above are manufactured by Tayca Corporation); ST-705SA (manufactured by Titanium Industry Co., Ltd., sea urchin-like, average particle size 0.25 μm); SOLAVEIL XTP-1 (manufactured by CRODA Corporation, average particle size 0.14 μm), etc. In the case of zinc oxide, examples include: XZ-300F (manufactured by Sakai Chemical Industry Co., Ltd., hexagonal plate-like, average particle size 300 nm), XZ-1000F (manufactured by Sakai Chemical Industry Co., Ltd., hexagonal plate-like, average particle size 1000 nm), etc. In the case of cerium oxide, examples include: CERIGUARD W-500 (manufactured by Daito Kasei Co., Ltd., average particle size 1800 nm), etc. In the case of iron oxide, examples include: TAROX series (manufactured by Titanium Industry Co., Ltd., various grades of P or HP or CS: R-516P, YP1200P, BL-100P, R-516CS, LL-100CS, ABL-205CS, etc. or their composite powders), FESOIE series (manufactured by Titanium Industry Co., Ltd.), SUN PURO series (C33-8001, C33-9001, C33-7001 (manufactured by SunChemical Corporation), UNIPURE series (manufactured by SENSIENT Corporation), etc. When using one of them or a combination of two or more, it is preferred that the types of inorganic oxides and / or hydroxides coated on the surface of component (B) are unified.

[0051] There are no particular limitations on the hydrophobizing agent for component (B) used in the present invention. Whether it is solid, semi-solid or liquid at room temperature, there are no particular limitations on its properties, and whether it is chemisorbed or physically adsorbed reactively with the surface of the metal oxide, there are no particular limitations. Examples include: silicone compounds, amino acids or their salts, treating agents having aliphatic groups with 8 to 24 carbon atoms, coupling agents, such as silane-based, aluminum-based, titanium-based, etc. like alkylalkoxysilane treatment. These can be used alone or in combination of two or more.

[0052] Examples of the silicone compound include: dimethylpolysiloxane, amino-modified silicone, polydimethylsiloxanol, methylhydrogenpolysiloxane, etc. Examples of the amino acid or its salt include: amino acids such as theanine, hydroxyproline, serine, etc. Examples of the surface treating agent having a structure with an aliphatic group having 8 to 24 carbon atoms include: hydrocarbons, lecithin, hydrogenated phospholipids, peptides, polyurethanes, N-acyl amino acids (such as lauroyl lysine, sodium dilauroyl glutamate lysine, disodium stearoyl glutamate, sodium lauroyl aspartate, etc.), polyethylene oxide, fatty acids or their salts (such as stearic acid, isostearic acid, zinc stearate, magnesium stearate, aluminum stearate, zinc myristate, zinc laurate, etc.), fatty acid esters (such as vegetable oils, animal oils, glycerol fatty acid esters, polyglycerol fatty acid esters, etc., polysaccharide fatty acid esters (such as dextrin fatty acid esters, inulin fatty acid esters, etc.)), fatty acid amides, ceramides, etc. Examples of the coupling agent include: triethoxyoctylsilane, aminopropyltriethoxysilane, isopropyl titanate triisostearate, etc.

[0053] In particular, among these, it is preferably surface-treated with a hydrophobizing agent having one or more selected from alkyl groups, alkoxy groups, acyl groups, and acylamino groups having 8 to 24 carbon atoms. Specifically, it is further more preferably one or more selected from alkylalkoxysilanes, polyglycerol fatty acid esters, acyl amino acids or their salts, lecithin, and fatty acids or their salts. If it is within this range, it is preferred from the viewpoint of coating film uniformity.

[0054] Regarding the treatment amount of the hydrophobizing agent for component (B) used in the present invention, it is preferably, when the mass of the metal oxide is set to 100%, preferably 0.01% or more, more preferably 1%, further preferably 2% or more, and preferably 10% or less, more preferably 6% or less, further preferably 4% or less. As a range, it is preferably 0.01 to 10%, more preferably 0.5 to 6%, further preferably 1 to 4%. If it is within this range, it is preferred from the viewpoint of coating film uniformity.

[0055] The method of treatment is not particularly limited, but known treatment methods used for powder modification in the past can be utilized. For example, wet methods using solvents, dry methods for treatment in the gas phase, etc. can be used. It is particularly preferred to mix with a volatile solvent or an oil agent and then perform dispersion, physical and chemical treatment, or drying to make it into fine powder. As specific volatile solvents, alcohol solvents such as isopropyl alcohol, hydrocarbon solvents such as hexane and isododecane, and volatile organosilicon solvents such as dimethyl silicone oil are particularly preferably used. Specifically, a method in which a metal oxide is dispersed in a solvent, a hydrophobizing agent is added, dissolved by appropriate heating, and uniformly stirred and mixed using a mixer such as a Henschel mixer, kneader, Ultra Mixer, bead mill, or roll mill to disperse or wet it, and then the solvent is recovered or evaporated to dry and homogenize it, and then pulverized, can be pulverized into powder by equipment such as a JET - O - MIZER, atomizer, or grinder.

[0056] It should be noted that after the hydrophobizing treatment, when component (B) is in a dry state, that is, in the form of powder, this powder can be used as component (B). On the other hand, in the case of using a dispersion directly prepared by dispersing a metal oxide not surface - treated with a hydrophobizing agent in a solvent or other components and adding a hydrophobizing agent, any one or two or more of the components (A) to (G) for the present invention can also be added to the dispersion at the same time. At this time, the components conforming to the components for the present invention are regarded as their respective components. It is preferred from the viewpoint of smooth spreading property to use component (B) whose respective powder has been hydrophobized in advance, but there is no particular limitation.

[0057] There is no particular limitation on the content of component (B) used in the present invention. Relative to the total amount of the cosmetic, as the lower limit, it is preferably 3 mass% (hereinafter referred to as %) or more, more preferably 4% or more, further preferably 5% or more, and particularly preferably 10% or more. As the upper limit, it is preferably 40% or less, more preferably 30% or less, and further preferably 20% or less. As a range, it is preferably 3 - 40%, more preferably 5 - 20%. If it is in this range, the smooth spreading property and the uniformity of the coating film are more excellent, so it is more preferred.

[0058] Component (C) for use in the present invention is one or more selected from oil agents, surfactants, and oil-phase thickeners that are solid at 25°C. Being solid at 25°C means that after melting and dropping onto a glass plate and then cooling to room temperature of 25°C, even when moved in the vertical direction, the shape does not change due to its own weight. As the oil agent, surfactant, and oil-phase thickener, there is no particular limitation as long as it is a substance usually blended in cosmetics. Substances having an aliphatic group with 12 or more carbon atoms are particularly preferred, and the aliphatic group is preferably straight-chain and saturated, but there is no particular limitation. For example, as the structure, one or more selected from higher alcohols, fatty acids or their salts, ether oils, hydrocarbon oils, fatty acid esters, ceramides, sterols, phospholipids, vegetable fats, animal fats, dextrin fatty acid esters, sucrose fatty acid esters, inulin fatty acid esters, and oil-soluble polyurethanes are preferred.

[0059] As the oil agent and surfactant that are solid at 25°C for component (C) used in the present invention, the following substances can be specifically mentioned. However, it does not include solid ultraviolet absorbers.

[0060] As the higher alcohol, behenyl alcohol, cetyl alcohol, cetearyl alcohol, stearyl alcohol, etc. can be mentioned, and as commercial products, Conol 2265 (Shin Nippon Rika Co., Ltd.) etc. can be mentioned.

[0061] As the fatty acid or its salt, stearic acid, zinc stearate, magnesium stearate, aluminum stearate, zinc myristate, zinc laurate, etc. can be mentioned. Among them, higher fatty acids or their salts are preferred, and metal soaps are preferred.

[0062] As the ether oil, batyl alcohol etc. can be mentioned.

[0063] As the hydrocarbon oil, petrolatum, paraffin wax, microcrystalline wax, polyethylene, polypropylene polymer, etc. can be mentioned, and petrolatum and polypropylene polymer (weight average molecular weight of 25,000 to 100,000) are particularly preferred.

[0064] As the fatty acid ester, ethyl stearate, butyl stearate, myristyl myristate, cetyl myristate, cetyl palmitate, cetyl lactate, glyceryl stearate, diglyceryl stearate, tristearin, tribehenin and other glycerol fatty acid esters, polyglycerol fatty acid esters such as polyglyceryl stearate, etc. can be mentioned.

[0065] As ceramides, natural ceramides such as ceramide EOP, ceramide NS, ceramide NG, ceramide NP, and ceramide AP can be mentioned; sphingosine, sphingomyelin which is a phospholipid derivative of phytosphingosine, sphingomyelins such as phytosphingomyelin, glycosphingolipids such as cerebroside or ganglioside which are their glycosides, and phytoglycosphingolipids, etc. As commercially available products, ceramide TIC-001 (Takasago Perfumery Co., Ltd.) etc. can be mentioned.

[0066] As sterols, substances having a sterol skeleton in their structure, as cholesterol, phytosterols, and sterol esters, examples include cholesterol macadamiate, cholesterol stearate, cholesterol isostearate, phytosterol oleate, cholesterol hydroxystearate, dilauroyl glutamate bis(octyldodecyl / phytosterol / behenyl alcohol) ester, etc. As commercially available products, RICETEROL ESTERS (Tsuno Rice Fine Chemicals), ELDEW PS-306 (Ajinomoto) etc. can be mentioned.

[0067] As phospholipids, natural substances can include, for example, phospholipids derived from soybeans, phospholipids derived from egg yolks, sunflower phospholipids, hydrogenated phospholipids, lysophospholipids, hydrogenated lysophospholipids, etc. obtained by processing these. As the alcohols constituting phospholipids, most contain nitrogen, and examples are choline, ethanolamine, inositol, serine, etc. Phospholipids derived from soybeans are preferred. Moreover, hydrogenated phospholipids are more preferred.

[0068] As vegetable fats, shea butter, cocoa butter, coconut oil, hydrogenated coconut oil, mango oil, candlenut oil, hydrogenated oils, carnauba wax, candelilla wax, rice bran wax, etc. can be mentioned. As commercially available products, as shea butter, BIODERMASX-19(E) (manufactured by Ichimaru Pharcos Co., Ltd.) etc. can be mentioned.

[0069] As animal fats, lanolin, beeswax, etc. can be mentioned.

[0070] As the oil-phase thickener for component (C) of the present invention, there is no particular limitation as long as it can thicken the oil agent by heating and melting and is usually blended in cosmetics.

[0071] For example, as dextrin fatty acid esters, dextrin palmitate, dextrin stearate, dextrin myristate, dextrin (palmitic acid / 2-ethylhexanoic acid) ester, etc. can be mentioned. As commercially available products, RHEOPEARL KL2, RHEOPEARL TL2, RHEOPEARL MKL2, RHEOPEARL TT2, RHEOPEARL WX (all manufactured by Chiba Flour Milling Co., Ltd.) etc. can be mentioned.

[0072] For example, as sucrose fatty acid esters, the following can be cited: sucrose laurate, sucrose myristate, sucrose palmitate, sucrose stearate, sucrose oleate, sucrose erucate, etc.

[0073] For example, as inulin fatty acid esters, the following can be cited: inulin stearate, etc. As commercially available products, the following can be cited: RHEOPEARLIS L2, RHEOPEARLIS K2 (both manufactured by Chiba Flour Milling Co., Ltd.), etc.

[0074] For example, as oil-soluble polyurethanes, the following can be cited: OILKEMIA 5S CC POLYMER (manufactured by Lubrizol Corporation, oil-soluble polyurethane polymer solid content 30%, mixture of tri(caprylic / capric) glycerol), (hydrogenated polybutadiene / glycol / HDI) copolymer (solid content 20%, mixture of cetyl ethylhexanoate), etc.

[0075] Among these, from the viewpoint of excellent smooth spreading property and film uniformity of the coating film, higher alcohols, higher fatty acids or their salts, hydrocarbon oils, ceramides, phospholipids, vegetable fats, animal fats, oil-soluble polyurethanes, dextrin fatty acid esters, and inulin fatty acid esters are preferred.

[0076] There is no particular limitation on the content of the component (C) used in the present invention. Relative to the total amount of the cosmetic, the lower limit is preferably 0.01% or more, more preferably 0.05% or more, further preferably 0.1% or more, and particularly preferably 1% or more. The upper limit is preferably 5% or less, more preferably 3% or less, and further preferably 2% or less. The range is preferably 0.01 to 5%, more preferably 0.05 to 3%, and further preferably 0.1 to 2%. If it is within this range, the smooth spreading property and the appropriate film-forming speed of the cosmetic film are more excellent, and thus it is more preferred.

[0077] Component (C) for use in the present invention is preferably blended in a form that comes into more contact with component (B) when component (B) is dispersed in a cosmetic, and since it is a solid, it is preferably added in a heated state. Moreover, it is more preferably premixed with component (B) in a state of being dissolved by heating once in component (E). Thus, regardless of whether component (B) is coated with respective hydrophobizing agents, it comes into contact with component (C) in a state where component (B) is mixed together, which can homogenize the surface properties of component (B), further improve the smoother spreadability, the appropriate film-forming speed of the cosmetic film, and further improve the uniformity of the cosmetic film immediately after coating. There is no particular limitation on the mixing method and the like, and it is preferably uniformly adhered to the surface of component (B) in a state where component (C) is heated and liquefied, and more preferably high-shear dispersion treatment is carried out together. Examples of the equipment for high-shear dispersion treatment include: for example, a medium disperser such as a bead mill / ball mill, a medium-free nano high-pressure disperser, a mortar mill, a roll mill and other mixers for uniformly stirring, mixing, dispersing or wetting. There is no particular limitation on the manufacturing equipment. Hereinafter, details are also described in the manufacturing method of the water-in-oil emulsion cosmetic.

[0078] In addition, the mass ratio (B) / (C) of component (B) to component (C) is preferably 5 to 700, more preferably 10 to 500, still more preferably 15 to 300, and particularly preferably 15 to 100. If it is within this range, it is preferable in terms of the appropriate film-forming speed of the cosmetic film and the uniformity of the cosmetic film immediately after coating.

[0079] Component (D) for use in the present invention is a nonionic surfactant that is liquid at 25 °C and / or an anionic surfactant having a polyhydroxy fatty acid group. The nonionic surfactant that is liquid at 25 °C refers to a surfactant that has both a lipophilic group and a hydrophilic group in the same molecule and does not have ionic properties when dissolved in water.

[0080] There is no particular limitation on the HLB of the nonionic surfactant that is liquid at 25 °C for component (D) for use in the present invention, but since the present invention is a water-in-oil type, from the viewpoint of emulsion stability, the HLB is preferably 7 or less, and more preferably 5 or less. In the present invention, there is no particular limitation on the lower limit value of the HLB, and it is preferably 1 or more, and more preferably 2 or more. As its range, it is preferably 1 to 7, and more preferably 2 to 5. There is no particular limitation on the nonionic surfactant for component (D) for use in the present invention, it can be linear or can contain a branched structure, and one kind can be contained as needed from these or two or more kinds can be combined. Here, in the present invention, the HLB refers to a value representing the balance between the hydrophilicity and lipophilicity of the surfactant, and in the present invention, specifically, it can be obtained by the following Kawakami formula.

[0081] HLB = 7 + 11.7 log(Mw / Mo)

[0082] (Here, Mw represents the molecular weight of the hydrophilic group part, and Mo represents the molecular weight of the lipophilic group part).

[0083] The nonionic surfactant that is liquid at 25 °C for the component (D) of the present invention is a substance appropriately selected and may contain one or a combination of two or more selected from glycerol fatty acid esters, polyglycerol fatty acid esters, surfactants having a polyhydroxy fatty acid group, sugar fatty acid esters, silicone surfactants, etc. In particular, glycerol fatty acid esters, polyglycerol fatty acid esters, and surfactants having a polyhydroxy fatty acid group are more preferred, and it may be one or a combination of two or more. These are more preferred in terms of smooth spreading property and the property that the cosmetic film does not change 10 minutes after just coating.

[0084] The glycerol fatty acid ester for the component (D) of the present invention is an ester of a fatty acid and glycerol. In addition, the polyglycerol fatty acid ester is an ester of a fatty acid and polyglycerol. The degree of polymerization of glycerol is not particularly limited, and the lower limit value is preferably 1 or more, more preferably 2 or more. In addition, the upper limit value is preferably 16 or less, more preferably 10 or less, and even more preferably 6 or less. If it is in this range, the smooth spreading property and the uniformity of the cosmetic film just after coating are more excellent, and thus it is more preferred. Specifically, examples include: polyglyceryl-10 stearate, polyglyceryl-10 diisostearate, polyglyceryl-10 tristearate, polyglyceryl-6 isostearate, polyglyceryl-5 trioleate, polyglyceryl-10 laurate, polyglyceryl-2 isostearate, polyglyceryl-2 diisostearate, polyglyceryl-2 triisostearate, polyglyceryl-2 tetraisostearate, polyglyceryl-6 polyricinoleate, polyglyceryl-3 distearate, etc. Among these, one or two or more selected from polyglyceryl-6 polyricinoleate, polyglyceryl-2 isostearate, and polyglyceryl-3 distearate are preferred.

[0085] Examples of the surfactant having a polyhydroxy fatty acid group for the component (D) of the present invention include: for example, polyhydroxystearic acid, which is polymerized from 12-hydroxystearic acid, and the degree of polymerization is not particularly limited. The lower limit of the degree of polymerization is preferably 4 or more, more preferably 6 or more, and the upper limit is preferably 10. For example, as the polyhydroxystearic acid-modified polyether at both ends, examples include: CITHROL DPHS-SO-(JP) (manufactured by CRODA, display name: PEG-30 dimer hydroxystearate), etc. In addition to these nonionic surfactants having a polyhydroxy fatty acid group, in the present invention, an anionic surfactant having a polyhydroxy fatty acid group can be used as the component (D), and preferably, for example, Salacos HS-6C of polyhydroxystearic acid (degree of polymerization is 6) (manufactured by Nisshin OilliO Group).

[0086] The sugar fatty acid ester used as component (D) in the present invention is an ester of a fatty acid and a sugar. The fatty acid may be branched or unbranched, and there is no particular limitation on the number of carbon atoms of the fatty acid. The lower limit is preferably 8 or more, more preferably 10 or more, and even more preferably 14 or more. Moreover, the upper limit is preferably 22 or less, more preferably 18 or less. If it is within this range, the emulsification stability is more excellent, so it is more preferred. There is no particular limitation on the sugar in the sugar fatty acid ester, and examples include glucose, sucrose, sorbitan, etc. As long as it is a sugar fatty acid ester, there is no particular limitation. Specifically, examples include sorbitan monooleate, sorbitan sesquioleate, sorbitan dioleate, sorbitan trioleate, sorbitan monoisostearate, sorbitan diisostearate, sorbitan triisostearate, sorbitan monostearate, sorbitan sesquistearate, sorbitan distearate, sorbitan sesquisisostearate, sorbitan triisostearate, methyl glucose sesquistearate, etc.

[0087] There is no particular limitation on the total content of component (D) used in the present invention. The lower limit is preferably 0.2% or more, more preferably 0.5% or more, and further preferably 1% or more. The upper limit is preferably 5%, more preferably 3% or less, and further preferably 2% or less. The range is preferably 0.2 to 5%, more preferably 0.5 to 3%, and more preferably 1 to 2% or less. If it is within this range, the smooth spreading property and the uniformity of the cosmetic film just after coating are more excellent, so it is more preferred.

[0088] Component (E) used in the present invention is a non-volatile oil agent that is liquid at 25°C, and examples include silicone oil, hydrocarbon oil, ester oil, higher alcohols having 12 to 22 carbon atoms, fatty acids having 12 to 22 carbon atoms, etc.

[0089] As the hydrocarbon oil, examples include liquid paraffin, liquid isoparaffin, heavy liquid isoparaffin, squalane, etc.

[0090] Examples of the ester oil include isononyl isononanoate, isotridecyl isononanoate, octyldodecyl myristate, isopropyl myristate, isocetyl myristate, isostearyl myristate, octyldodecyl myristate, isopropyl isostearate, oleyl oleate, octyldodecyl ricinoleate, 2-ethylhexyl p-methoxycinnamate, alkyl (C12-C15) benzoates such as alkyl benzoates, isopropyl palmitate, ethylhexyl palmitate, 2-ethyl decyl palmitate and other monoester oils; di-2-ethylhexyl sebacate, diisopropyl sebacate, diethylene glycol didecanoate, dipropylene glycol didecanoate, neopentyl glycol didecanoate, neopentyl glycol di-2-ethylhexanoate, diethylhexyl succinate, diisostearyl malate and other diester oils; tri-2-ethylhexyl glycerol, triglyceride (caprylic / capric acid) and other triesters; cetyl 2-ethylhexanoate, 2-ethylhexyl hydroxystearate, (C12-C15) alkyl benzoates such as benzoates, ethylhexyl methoxycinnamate, ethylhexyl salicylate and the like. One or more of these can be used as needed. Examples of commercially available products include Salacos 913 (manufactured by Nisshin OilliO Co., Ltd.), UVINUL MC80 (manufactured by BASF), Crodamol OSU (manufactured by CRODA JAPAN Co., Ltd.), Finsolv TN (manufactured by Innospec Performance Chemicals Europe Limited).

[0091] Examples of the higher alcohols having 12 to 22 carbon atoms include oleyl alcohol, 2-decyltetradecanol, dodecanol, isostearyl alcohol, octyldodecanol and the like.

[0092] Examples of the fatty acids having 12 to 22 carbon atoms include oleic acid, isostearic acid, linoleic acid, linolenic acid and the like.

[0093] Examples of the silicone oil include, in addition to linear silicone oils such as dimethylpolysiloxane, modified silicones having substituents such as phenyl-modified silicone, methylhydrogenpolysiloxane, and dimethyl diethyl benzylidenemalonate. Examples of commercially available products include KF-96A-6CS (manufactured by Shin-Etsu Chemical Co., Ltd.), Silicone SH556FLUID (manufactured by Toray Dow Corning Co., Ltd.) and the like.

[0094] Among these, one or more selected from isostridecyl isononanoate, alkyl (C12-C15) benzoate, and diethylhexyl succinate are more preferred because they have more excellent smooth spreading properties and uniformity of the cosmetic film immediately after coating.

[0095] There is no particular limitation on the total content mass of component (E) used in the present invention. As the lower limit, it is preferably 5% or more, more preferably 10% or more, and further preferably 15% or more. As the upper limit, it is preferably 33%, more preferably 28% or less, and further preferably 23% or less. As the range, it is preferably 5 - 33%, more preferably 10 - 28%, and further preferably 15 - 23%. If it is within this range, the smooth spreading property and the uniformity of the cosmetic film just after coating are more excellent, and thus it is more preferred.

[0096] For component (F) water and / or ethanol used in the present invention, tap water can be used, or purified water, hot spring water, deep water, etc. purified by distillation or the like can be used. In addition, plant extracts such as aloe vera, witch hazel, Hamamelis, cucumber, lemon, lavender, and rose water can also be used. Ethanol can also be used as a mixture with the above-mentioned water, and ethanol with a purity of 100% can also be used.

[0097] There is no particular limitation on the content of component (F) used in the present invention. As the lower limit, it is preferably 15% or more, more preferably 25% or more, and further preferably 35% or more. As the upper limit, it is preferably 70%, more preferably 60% or less, and further preferably 50% or less. As the range, it is preferably 15 - 70%, more preferably 25 - 60%, and further preferably 35 - 50%. If it is within this range, the smooth spreading property and the non - change property of the cosmetic film 10 minutes after just coating are more excellent, and thus it is more preferred.

[0098] In the present invention, higher effects can be expected by specifically defining the content mass ratios of component (A), component (B), and (F).

[0099] The content mass ratio (A)+(F) of component (A) and component (F) is 20 - 70%, preferably 25 - 65%, and more preferably 30 - 60%. If it is within this range, it is excellent in terms of the appropriate film - forming speed of the cosmetic film and the non - change property of the cosmetic film 10 minutes after just coating.

[0100] Moreover, the content mass ratio of component (A), component (B), and component (F) is (B) / [(A)+(F)] = 0.08 - 1.5, preferably 0.10 - 1.0, and more preferably 0.15 - 0.7. If it is within this range, it is preferred in terms of the appropriate film - forming speed of the cosmetic film and the non - change property of the cosmetic film 10 minutes after just coating.

[0101] In the present invention, it may further contain component (G) an oil-soluble film-forming agent. The component (G) an oil-soluble film-forming agent in the present invention can be dissolved or dispersed in an oil agent to form a film. Here, forming a film means dissolving a resin at 40% in a soluble solvent, applying the resulting solution onto a glass plate with a 400-μm-thick applicator, and forming a film after drying at room temperature for 24 hours. However, the component (G) in the present invention does not include the components (C) and (E). The component (G) an oil-soluble film-forming agent in the present invention is not particularly limited as long as it is a substance that can be used in ordinary cosmetics, and any substance can be used. Moreover, it is preferably a solution or dispersion obtained by diluting with a solvent, or a solution or dispersion obtained by premixing. As the solvent for diluting or dispersing the component (G), it is preferably selected from 1 or more of dimethicone, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, hydrogenated polyisobutene of component (A), and isododecane, and more preferably volatile dimethicone and isododecane. It should be noted that volatile means having a flash point of 35 to 90°C. Commercially available products dissolved in these volatile oil agents can also be used.

[0102] As the component (G) an oil-soluble film-forming agent, there is no particular limitation, and examples thereof include: silicone-based resins such as trimethylsiloxysilicate, polymethylsilsesquioxane, acrylic-silicone graft copolymers, and fluorine-modified silicone resins; acrylic alkyl ester / vinyl acetate resins, acrylic alkyl ester / styrene resins, polyvinyl isobutyl ether, polybutene, polyisobutene, rosin-modified phenolic resins, rosin acid-based resins such as rosin esters (e.g., pentaerythritol ester of hydrogenated abietic acid, etc.), hydrogenated abietic acid-based resins such as hydrogenated abietic acid glycerol ester, dextrin isostearate, candelilla resin, and copernicia cerifera extract, etc. oil-soluble resins, and 1 or more of these can be used. Among them, it is preferably selected from 1 or more of copolymers having a silicone skeleton and copolymers having a (meth)acrylic acid alkyl ester skeleton.

[0103] As commercially available products of the oil-soluble film-forming agent (G) in the present invention, for example, as trimethylsiloxysilicate, the following can be cited: Silicone X-21-5250 (50% decamethylcyclopentasiloxane solution), Silicone X-21-5250L (50% volatile dimethicone solution), KF-7312T (60% methylpolysiloxane solution), KF-7312J (50% decamethylcyclopentasiloxane solution), KF-7312K (60% dimethicone solution), KF-9021 (50% decamethylcyclopentasiloxane solution), KF-9021L (50% volatile dimethicone solution) (all manufactured by Shin-Etsu Chemical Co., Ltd.), BY11-018 (solid content 30%, solvent: cyclopentasiloxane, manufactured by Toray Dow Corning Co., Ltd.), SS4267 (35% dimethicone solution), SILSOFT 74 (75% isododecane solution) (manufactured by Momentive Performance Materials Japan Co., Ltd.), SR-1000 (solid content 100%: manufactured by Momentive Performance Materials Co., Ltd.), etc. As polymethylsilsesquioxane, the following can be cited: SILFORM FLEXIBLE RESIN (purity 100%) (manufactured by Momentive Performance Materials Japan Co., Ltd.), etc. As acrylic-silicone graft copolymers, the following can be cited: (acrylate / dimethicone) copolymer, (acrylate / stearyl acrylate / dimethylsilicone methacrylate) copolymer, (acrylate / ethylhexyl acrylate / dimethylsilicone methacrylate) copolymer, (acrylate / behenyl acrylate / dimethylsilicone methacrylate) copolymer, etc. As commercially available products, the following can be cited: KP-540, KP541, KP-545L, KP-550, KP-545, KP-562, KP-561P (manufactured by Shin-Etsu Chemical Co., Ltd.), etc. As silicone-based resins such as fluorine-modified silicone resins, the following can be cited: XS66-B8226 (solid content 50%, solvent: cyclopentasiloxane, manufactured by Momentive Performance Materials Co., Ltd.), etc. As alkyl acrylate / styrene resins, the following can be cited: (styrene / acrylate) copolymer, etc. As its commercially available product, the following can be cited: Nissetsu U-3710A (manufactured by Nippon Carbide Industries Co., Ltd.).In addition, as other resins, examples include candelilla resin E-1, E-2 (manufactured by Japan Natural Products), TOWAX-1B4 (manufactured by Toagosei Co., Ltd.), Unifilma HVY (manufactured by Chiba Flour Milling Co., Ltd.), ESTER GUM HP (manufactured by Arakawa Chemical Industries, Ltd.), PINECRYSTAL KE-311 (manufactured by Arakawa Chemical Industries, Ltd.), and the like.

[0104] There is no particular limitation on the content of the component (G) used in the present invention. In terms of solid content, it is preferably 0.1 to 15%, more preferably 0.5 to 10%, and still more preferably 1 to 5%. If it is within this range, it is excellent in terms of the appropriate film-forming speed of the cosmetic film and the non-changeability of the cosmetic film 10 minutes after just coating.

[0105] In the water-in-oil emulsion cosmetic of the present invention, in addition to the above components (A) to (G), components commonly used in cosmetics can also be incorporated. For example, as the oily component, linear dimethylpolysiloxanes such as dimethylpolysiloxane (1 cs), dimethylpolysiloxane (1.5 cs), dimethylpolysiloxane (2 cs), etc. having a flash point of 35 to 87 °C as volatile silicone oils can be incorporated; branched siloxanes such as tris(trimethylsilyl)methylsilane, tetrakis(trimethylsilyl)silane, etc., and caprylyl methicone. Commercially available products of volatile silicone oils include: KF-96L-1.5 cs, KF-96L-2 cs (both manufactured by Shin-Etsu Chemical Co., Ltd.), BELSIL (registered trademark) DM 1PLUS (Wacker Asahikasei Silicone Co., Ltd.), DOWSIL SS-3408 (manufactured by Dow Toray Co., Ltd.), and the like. In addition, powders other than component (B), surfactants other than component (D), fibers, alcohols (monohydric alcohols other than ethanol, polyhydric alcohols, etc.), water-soluble polymers, water-based components such as humectants, sugars, antioxidants, defoamers, beauty components, preservatives, fragrances, etc. can be contained within the range that does not interfere with the effects of the present invention.

[0106] In the water-in-oil emulsion cosmetic of the present invention, the following components may be further included as ultraviolet absorbers. The ultraviolet absorber is not particularly limited as long as it is a substance commonly used in cosmetics and the like, and may be a substance in any form such as solid, paste, powder, etc. other than component (C). Specifically, it may include, for example, one or more selected from hexyl diethylaminohydroxybenzoyl benzoate, 2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine, 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine, 2,2'-methylenebis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol), and drometrizole trisiloxane.

[0107] The water-in-oil emulsion cosmetic of the present invention can be produced by a conventional method. There is no particular limitation on the production method. The water-in-oil emulsion cosmetic of the present invention is produced according to a specified process, whereby the effect can be further enhanced. Specifically, it is a production method of a water-in-oil emulsion cosmetic containing components (A) to (F) and further optionally containing (G) or other components, and the production method includes step (1): heating and dissolving the component (C) in all or a part of the component (E) at 35 to 100 °C to obtain an intermediate treatment product (1); and step (2): adding the component (B) to the intermediate treatment product (1) and performing high-shear dispersion treatment to obtain an intermediate treatment product (2).

[0108] Next, the components (A) and (D) are mixed in the intermediate treatment product (2) (step (3)). When a part of the component (E) is added in step (1), the remaining part of the component (E) may also be mixed here.

[0109] In addition, within the scope not impairing the effects of the present invention, all or part of component (A) and / or (D) may also be mixed in step (1) and / or step (2). Thereafter, a method for manufacturing a water-in-oil emulsion cosmetic in which component (F) is added in the presence of component (D) for emulsification (step (4)) can be cited. By adopting these steps, a cosmetic having more excellent smooth spreadability, uniformity of the makeup film immediately after coating, and non-changeability of the makeup film 10 minutes after just coating can be obtained. Moreover, particularly by adopting step (1) and step (2), component (C) is uniformly dispersed on the surface of component (B), so it is more preferable in terms of the uniformity of the makeup film immediately after coating. Moreover, in step (2), it is preferable to have the following step: a high-shear dispersion treatment is performed at a temperature lower than the dissolution temperature of step (1) to obtain an intermediate treatment product (2). Specifically, it is preferably to have the following step: a high-shear dispersion treatment is performed at a temperature of 5 to 80°C to obtain an intermediate treatment product (2), and more preferably to have the following step: a high-shear dispersion treatment is performed at a temperature of 10 to 70°C to obtain an intermediate treatment product (2). If these steps are adopted, it is preferable in terms of the high-temperature stability of component (C) and the safety of the equipment. It should be noted that the heating dissolution temperature in step (1) is preferably 50 to 85°C, more preferably 60 to 80°C. If it is within this range, it is more preferable from the viewpoints of the high-temperature stability of component (C) and the uniformity of the makeup film immediately after coating.

[0110] The equipment for manufacturing the water-in-oil emulsion cosmetic of the present invention is not particularly limited as long as it is a device commonly used for manufacturing cosmetics, and examples thereof include: Henschel mixer, kneader, super mixer, medium dispersion machines such as bead mill / ball mill, medium-free nano high-pressure dispersion machine, mortar mill, roll mill, homogenizer, stirring disperser (Ajidesper), triple mixer, etc. These devices are preferably used for the dispersion of each component, particularly for the dispersion of component (B) in step (2), or for the emulsification step of adding component (F). In particular, in the high-shear dispersion treatment in step (2), the use of a medium dispersion machine, a medium-free nano high-pressure dispersion machine, a mortar mill, or a roll mill is more preferable from the viewpoints of excellent dispersing power, smooth spreadability, uniformity of the makeup film immediately after coating, and non-changeability of the makeup film 10 minutes after just coating.

[0111] The properties of the water-in-oil emulsion cosmetic of the present invention are not particularly limited and may be any of liquid, gel-like, cream-like, semi-solid, solid, stick-like, etc.

[0112] Examples of the water-in-oil type emulsified cosmetics of the present invention include: for example, skin care cosmetics such as emulsions and lotions, facial mask cosmetics, facial cleansers, massage cosmetics, hair cosmetics, sunscreen creams, body cosmetics such as body lotions, beauty serums for daytime use, eye cosmetics such as eye creams, lip care cosmetics such as lip serums and lip balms, and makeup cosmetics such as foundations, primers, concealers, eyeshadows, blushes, lipsticks, mascaras, and eyebrow gels. Among these, makeup cosmetics are preferred, and more preferably one or more selected from foundations, primers, and concealers.

[0113] Moreover, in addition to the inventions [1] to [8] described above, the present invention can also include the following inventions.

[0114] [9] The water-in-oil type emulsified cosmetics according to [5], wherein the component (G) contains one or more selected from copolymers having a silicone backbone and copolymers having a (meth)acrylic acid alkyl ester backbone.

[0115]

[10] The water-in-oil type emulsified cosmetics according to any one of [2] to [9], wherein the component (A) is one or more selected from isododecane, isocetane, and light liquid isoparaffin.

[0116] Examples

[0117] Examples are given below to explain the present invention in detail. It should be noted that these do not limit the present invention in any way.

[0118] Examples 1 to 33 and Comparative Examples 1 to 4: Water-in-oil type liquid foundations

[0119] Water-in-oil type liquid foundations having the formulations shown in Tables 1 to 4 below were prepared, and the following evaluation methods were used to evaluate (a) smooth spreadability, (b) appropriate film-forming speed of the makeup film, (c) uniformity of the makeup film immediately after coating, and (d) non-changeability of the makeup film 10 minutes after just coating. The results are shown together in Tables 1 to 4.

[0120] [Table 1]

[0121]

[0122] ※1: MT-500SA (manufactured by TAYCA Corporation) was treated with 3% zinc laurate

[0123] ※2: TIPAQUE (registered trademark) CR-50 (manufactured by Ishihara Sangyo Co., Ltd.) was treated with 3% zinc laurate

[0124] ※3: MT-500SA (manufactured by TAYCA Corporation) was treated with 3% disodium stearoyl glutamate

[0125] ※4: Treat MZ-300 (manufactured by TAYCA Corporation) with 3% disodium stearoyl glutamate

[0126] ※5: Treat YP1200P (manufactured by TITAN KOGYO Corporation) with disodium stearoyl glutamate

[0127] ※6: Treat R-516HP (manufactured by TITAN KOGYO Corporation) with disodium stearoyl glutamate

[0128] ※7: Treat BL-100HP (manufactured by TITAN KOGYO Corporation) with disodium stearoyl glutamate

[0129] ※13: NIKKOL Lecinol S-10 (manufactured by Nikko Chemicals Co., Ltd.)

[0130] ※20: KP-550 (manufactured by Shin-Etsu Chemical Co., Ltd., solid content 40% isododecane solvent)

[0131] ※22: MARUKASOL R (manufactured by Maruzen Petrochemical Co., Ltd.)

[0132] ※23: Cetiol (registered trademark) Ultimate (manufactured by BASF Japan Ltd.)

[0133] ※26: Silica microbeads P-1505 (manufactured by JGC Catalysts & Chemicals Ltd.)

[0134] ※27: Talc JA-46R (manufactured by Asada Flour Milling Co., Ltd.)

[0135] [Table 2]

[0136]

[0137] ※14: Ceramide TIC-001 (manufactured by Takasago Perfumery Co., Ltd.)

[0138] ※15: Conol 2265 (manufactured by Nippon Rika Kogyo Co., Ltd.)

[0139] ※16: RICETEROL ESTERS (manufactured by Tsukuno Food Industries Co., Ltd.)

[0140] ※17: ELDEW PS-306 (manufactured by Ajinomoto Co., Inc.)

[0141] ※18: BIODERMA SX-19<E>(manufactured by Ichimaru Pharcos Corporation)

[0142] ※19: L-MODU (manufactured by Idemitsu Kosan Co., Ltd.)

[0143] [Table 3]

[0144]

[0145] ※21: Nissetsu U-3710A (manufactured by Nippon Carbide Industries Co., solid content 45% isododecane solvent)

[0146] [Table 4]

[0147]

[0148] ※8: TIPAQUE CR-50 (manufactured by Ishihara Sangyo Kaisha, Ltd.)

[0149] ※9: MT-500SA (manufactured by TAYCA Corporation)

[0150] ※10: R-516HP (manufactured by TITAN KOGYO Co., Ltd.) ※11: YP1200P (manufactured by TITAN KOGYO Co., Ltd.) ※12: BL-100HP (manufactured by TITAN KOGYO Co., Ltd.) ※24: KF-995 (manufactured by Shin-Etsu Chemical Co., Ltd.)

[0151] ※25: KF-96L-1.5CS (manufactured by Shin-Etsu Chemical Co., Ltd.)

[0152] (Manufacturing Method 1) Examples 1 to 9, Examples 11 to 33, Comparative Examples 1 to 4 (Raw materials with unrecorded numbers are unblended raw materials)

[0153] A: Heat components (18) to (29), (33), (36) to 80 °C and mix and dissolve them uniformly.

[0154] B: Add a part of components (1) to (17), components (30) to (32) at room temperature of 5 to 40 °C to A and mix and disperse them uniformly with a roll mill.

[0155] C: Mix and disperse a part of components (30) to (32), a part of components (38) to (41), and component (42) uniformly with a roll mill.

[0156] D: Add C, the remaining components (30) to (32), components (34) to (35), component (37), the remaining components (38) to (41), and components (43) to (46) to B and mix and disperse them uniformly.

[0157] E: Add components (47) to (49) to D and emulsify them at 2000 rpm for 5 minutes at room temperature with a dispersion mixer.

[0158] F: Fill E into a container to obtain a water-in-oil type liquid foundation.

[0159] Example 10 of (Manufacturing Method 2) (Raw materials with unrecorded numbers are unblended raw materials)

[0160] A: The additive components (1) to (17), a part of components (30) to (32), and component (36) are uniformly mixed and dispersed using a roll mill.

[0161] B: A part of components (30) to (32), a part of components (38) to (41), and component (42) are uniformly mixed and dispersed using a roll mill.

[0162] C: B, components (18) to (29), the remaining components (30) to (32), components (34) to (35), component (37), the remaining components (38) to (41), and components (43) to (46) are added to A and uniformly mixed and dispersed.

[0163] D: Components (47) to (49) are added to C, and emulsified at 2000 rpm for 5 minutes at room temperature using a dispersion mixer.

[0164] E: D is filled into a container to obtain a water-in-oil type liquid foundation.

[0165] (Evaluation Method)

[0166] A. Smooth spreadability

[0167] Ten professional cosmetic evaluators conduct a sensory evaluation on the smoothness of the coating feeling when each cosmetic is applied to the face, score each sample, and then judge the average score of all professional cosmetic evaluators according to the following judgment criteria.

[0168] Evaluation criterion for "Smooth spreadability":

[0169]

[0170] Judgment criterion: "Smooth spreadability"

[0171]

[0172] B. Appropriate film-forming speed of the makeup film

[0173] Ten professional cosmetic evaluators apply 0.2 mL of each cosmetic to the skin. Those who can complete the coating action within 15 seconds are judged as good, and the judgment is made according to the following judgment criteria.

[0174] <Judgment criteria>

[0175]

[0176] C. Uniformity of the makeup film immediately after coating

[0177] Ten professional cosmetic evaluators applied each cosmetic product to the skin. The uniformity of the makeup film after coating was evaluated sensorially according to the following criteria, and each sample was scored. Then, the average score of all professional cosmetic evaluators was judged according to the following judgment criteria.

[0178] Evaluation criterion "Uniformity of the makeup film immediately after coating":

[0179]

[0180] Judgment criterion: "Uniformity of the makeup film immediately after coating"

[0181]

[0182] D. No change in the makeup film 10 minutes after immediate coating (see Figure 1 )

[0183] 0.1 g of the obtained water-in-oil emulsion cosmetic was measured and spread over a 5 cm × 5 cm area on the cheek. Immediately after coating and 10 minutes after coating, it was photographed using VISIA EVOLUTION (Integral Co., Ltd.). In the cheek area coated with the water-in-oil emulsion cosmetic, a 2 cm × 4 cm area (see the dotted line part in Figure 1 ) was intercepted. For the photographed image, in the RGB color space using the image editing software Image J, the RGB values were each set with a threshold of 250, and the area above 250 was calculated. Based on the value of the area immediately after coating / the area 10 minutes after coating, a 5-level evaluation was performed as follows.

[0184] <Judgment criteria>

[0185]

[0186]

[0187] The water-in-oil liquid foundations of Examples 1 to 33 shown in Tables 1 to 4 are excellent in terms of smooth spreadability, appropriate film-forming speed of the makeup film, uniformity of the makeup film immediately after coating, and no change in the makeup film 10 minutes after immediate coating.

[0188] The water-in-oil liquid foundations of Comparative Examples 1 to 4 are as shown in Table 4. Specifically,

[0189] In Comparative Examples 1 and 2 where Component (A) was replaced with a volatile silicone oil, the spreading was not smooth but skidded on the surface, and the formation speed of the appropriate cosmetic film was slow. In terms of the uniformity of the cosmetic film immediately after coating, unevenness was likely to occur, and in terms of the non-changeability of the cosmetic film 10 minutes after coating, although it had gloss immediately after coating, the gloss disappeared due to a sharp change, and it was a coating film with large changes.

[0190] In Comparative Example 3 without Component (C), the formation speed of the appropriate cosmetic film was slow, and the uniformity of the cosmetic film immediately after coating was lacking, and the unevenness of the skin was likely to be significant.

[0191] In Comparative Example 4 without Component (D), the smooth spreading property was lacking, the feeling of use was heavy, and the uniformity of the cosmetic film immediately after coating was insufficient.

[0192] Example 34: Water-in-oil type BB cream

[0193] (Used as sunscreen, makeup base, foundation, concealer, lotion)

[0194] The water-in-oil type BB cream was prepared according to the following composition and manufacturing method.

[0195]

[0196]

[0197] ※28: Cosmetica Super White N-8000S / Average particle size: 30 μm (manufactured by DKSH)

[0198] (Manufacturing method)

[0199] A: Heat Components (6), (7), and (15) to 80 °C and mix and dissolve them uniformly.

[0200] B: Add a part of Components (9) to (14) and a part of Components (3) to (5) to A and uniformly mix and disperse them with a roll mill.

[0201] C: Uniformly mix and disperse a part of Components (3) to (5), a part of Components (1) and (2), and Components (16) to (18) with a roll mill.

[0202] D: Add C, the remaining Components (1) and (2), the remaining Components (3) to (5), Component (8), and Components (19) to (23) to B and uniformly mix and disperse them.

[0203] E: Add Components (24) to (27) to D and emulsify at 2000 rpm for 5 minutes at room temperature with a dispersion mixer.

[0204] F: Fill E into a tubular container to obtain a water-in-oil type BB cream.

[0205] The water-in-oil type BB cream of Example 34 obtained as above is excellent in terms of smooth spreadability, moderate film-forming speed of the makeup film, uniformity of the makeup film immediately after coating, and non-changeability of the makeup film 10 minutes after just coating.

[0206] Example 35: Water-in-oil type double-layer shaking foundation

[0207] Prepare a water-in-oil type double-layer shaking foundation according to the following composition and manufacturing method.

[0208]

[0209]

[0210] (17), (18), (19) may also be metal oxides treated with zinc stearate, sodium lauroyl glutamate lysine methylpolysiloxane, hydrogen polysiloxane triethoxysilane, and aminopropyltriethoxysilane.

[0211] (Manufacturing method)

[0212] A: Heat components (6) - (12), (20), (21) to 80°C and mix and dissolve them uniformly.

[0213] B: Add components (14) - (19) and a part of components (3) - (5) to A and mix and disperse them uniformly with a roll mill.

[0214] C: Uniformly mix and disperse components (1), (2) in part, components (3) - (5) in part, and components (22) - (23) with a mortar grinder.

[0215] D: Add C, the remaining components (1), (2), the remaining components (3) - (5), component (13), and components (24) - (27) to B and mix and disperse them uniformly.

[0216] E: Add components (28) - (31) to D and emulsify at 2000 rpm for 5 minutes at room temperature with a dispersion mixer.

[0217] F: Fill E into a bottle container to obtain a water-in-oil type double-layer shaking foundation.

[0218] The water-in-oil type double-layer shaking foundation of Example 35 obtained as above is excellent in terms of smooth spreadability, moderate film-forming speed of the makeup film, uniformity of the makeup film immediately after coating, and non-changeability of the makeup film 10 minutes after just coating.

[0219] Example 36: Water-in-oil type sunscreen cosmetic

[0220] Prepare a water-in-oil sunscreen using the composition and manufacturing method described below.

[0221]

[0222]

[0223] ※29: KSP-100 / Average particle size: 5 μm / Non-porous (manufactured by Shin-Etsu Chemical Co., Ltd.)

[0224] (15) can also be a metal oxide treated with zinc stearate, sodium methyl poly(siloxane) lauroyl glutamate, hydrogen polysiloxane triethoxysilane, and aminopropyltriethoxysilane.

[0225] (Manufacturing method)

[0226] A: Heat components (7) to (12), (16) to 80 °C and mix and dissolve them uniformly.

[0227] B: Add component (15) and a part of components (4) to (6) to A and mix and disperse them uniformly using a media disperser.

[0228] C: Add the remaining components (1) to (3), the remaining components (4) to (6), components (13), (14), and components (17) to (21) to B and mix and disperse them uniformly.

[0229] D: Add components (22) to (25) to C and emulsify at 2000 rpm for 5 minutes at room temperature using a dispersion mixer.

[0230] E: Fill D into a bottle container to obtain a water-in-oil sunscreen.

[0231] The water-in-oil sunscreen obtained as above is excellent in terms of smooth spreadability, moderate film-forming speed of the makeup film, uniformity of the makeup film immediately after coating, and non-changeability of the makeup film 10 minutes after coating.

[0232] Example 37: Water-in-oil mascara cosmetic

[0233] Prepare a water-in-oil mascara cosmetic using the composition and manufacturing method described below.

[0234]

[0235]

[0236]

[0237] ※30 Orgasol 2002D / Average particle size 20 μm / Porous (manufactured by Atofina Japan Co., Ltd.)

[0238] (15), (16), and (17) may also be metal oxides treated with zinc stearate, sodium lauroyl glutamate lysine, methylpolysiloxane, hydrogen polysiloxane triethoxysilane, and aminopropyltriethoxysilane.

[0239] (Manufacturing method)

[0240] A: Heat components (14), components (18) - (23), and a part of (2) - (5) to 90°C and uniformly mix and dissolve them.

[0241] B: Add components (3) - (12) and components (15) - (17) to A and uniformly mix and disperse them using a hot roll mill.

[0242] C: Uniformly mix and disperse components (24) - (27) and a part of component (2) using a roll mill.

[0243] D: Add C, component (1), the remaining (2) - (5), component (13), and components (28) - (30) to B and uniformly mix and disperse them.

[0244] E: Add components (31) - (35) to D and emulsify at 2000 rpm for 5 minutes at room temperature using a dispersion mixer.

[0245] F: Fill E into a container with a coating body to obtain a water-in-oil type mascara cosmetic.

[0246] The water-in-oil type mascara cosmetic obtained as above is excellent in terms of smooth spreadability, appropriate film-forming speed of the makeup film, uniformity of the makeup film immediately after coating, and non-changeability of the makeup film 10 minutes after coating.

[0247] Example 38: Water-in-oil type blush

[0248] Prepare a water-in-oil type blush according to the composition and manufacturing method shown below.

[0249]

[0250]

[0251]

[0252] ※31: Cosmetica (registered trademark) Fine White N-8000D / Average particle size: 15 μm (manufactured by DKSH Co., Ltd.)

[0253] (15), (16), (17), and (18) may also be metal oxides treated with zinc stearate, sodium lauroyl glutamate lysine, methylpolysiloxane, hydrogen polysiloxane triethoxy octyl silane, and aminopropyl triethoxysilane.

[0254] (Manufacturing method)

[0255] A: Heat components (13), (14), (19) to (24) to 80 °C and uniformly mix and dissolve them.

[0256] B: Add components (3) to (12) and components (15) to (18) to A, and uniformly mix and disperse them with a roll mill.

[0257] C: Uniformly mix and disperse components (25) to (27) and a part of component (2) with a roll mill.

[0258] D: Add C, the remaining components (1), (2), and components (28) to (30) to B, and uniformly mix and disperse them.

[0259] E: Add components (31) to (35) to D, and emulsify them at room temperature at 2000 rpm for 5 minutes with a dispersion mixer.

[0260] F: Fill E into a container with a coating body to obtain a water-in-oil type blush.

[0261] The water-in-oil type blush of Example 38 obtained as above is excellent in terms of smooth spreadability, moderate film-forming speed of the makeup film, uniformity of the makeup film immediately after coating, and non-changeability of the makeup film 10 minutes after coating.

Claims

1. A water-in-oil emulsion cosmetic, which contains the following components (A) to (F): (A) Volatile hydrocarbon oil; (B) Metal oxide that can be surface-treated with a hydrophobizing agent; (C) One or more selected from oil agents, surfactants, and oil-phase thickeners that are solid at 25 °C; (D) Nonionic surfactant and / or anionic surfactant having a polyhydroxy fatty acid group that is liquid at 25 °C; (E) Non-volatile oil agent that is liquid at 25 °C; (F) Water and / or ethanol, Among them, The total mass content of the component (A) and the component (F) is 20 to 70% by mass, and the mass content ratio of the component (B) to the total mass content of the component (A) and the component (F), (B) / [(A)+(F)], is 0.08 to 1.5, The component (C) is one or more selected from higher alcohols, fatty acids or their salts, ether oils, hydrocarbon oils, fatty acid esters, ceramides, sterols, phospholipids, vegetable fats, animal fats, dextrin fatty acid esters, sucrose fatty acid esters, inulin fatty acid esters, and oil-soluble polyurethanes.

2. The water-in-oil emulsion cosmetic according to claim 1, wherein, The component (D) contains one or more selected from glycerol fatty acid esters, polyglycerol fatty acid esters, and surfactants having a polyhydroxy fatty acid group.

3. The water-in-oil emulsion cosmetic according to claim 1 or 2, wherein, The hydrophobizing agent of the component (B) has one or more functional groups selected from alkyl groups, alkoxy groups, acyl groups, and acylamino groups having 8 to 24 carbon atoms.

4. The water-in-oil emulsion cosmetic according to claim 1 or 2, wherein, The component (C) is one or more selected from fatty acid salts, ceramides, phospholipids, vegetable fats, animal fats, hydrogenated polyolefins, oil-soluble polyurethanes, dextrin fatty acid esters, and inulin fatty acid esters.

5. The water-in-oil emulsion cosmetic according to claim 1 or 2, which further contains an oil-soluble film-forming agent as the component (G).

6. The water-in-oil emulsion cosmetic according to claim 3, wherein, The hydrophobizing agent of the component (B) is one or more selected from alkylalkoxysilanes, polyglycerol fatty acid esters, acyl amino acids or their salts, and fatty acids or their salts.

7. The water-in-oil emulsion cosmetic according to claim 1 or 2, wherein, The mass content ratio of the component (B) to the component (C), (B) / (C), is 5 to 300.

8. A method for manufacturing a water-in-oil emulsion cosmetic, which is a method for manufacturing a water-in-oil emulsion cosmetic containing the following components (A) to (F): (A) Volatile hydrocarbon oil; (B) Metal oxide that can be surface-treated with a hydrophobizing agent; (C) One or more selected from oil agents, surfactants, and oil-phase thickeners that are solid at 25 °C; (D) Nonionic surfactant and / or anionic surfactant having a polyhydroxy fatty acid group that is liquid at 25 °C; (E) Non-volatile oil agent that is liquid at 25 °C; (F) Water and / or ethanol, Among them, The component (C) is one or more selected from higher alcohols, fatty acids or their salts, ether oils, hydrocarbon oils, fatty acid esters, ceramides, sterols, phospholipids, vegetable fats, animal fats, dextrin fatty acid esters, sucrose fatty acid esters, inulin fatty acid esters, and oil-soluble polyurethanes, The method for manufacturing this water-in-oil emulsion cosmetic includes the following steps (1) and (2): Step (1): A step of heating and dissolving the component (C) in all or a part of the component (E) at 35 to 100 °C to obtain an intermediate treatment product (1); Step (2): A step of adding the component (B) to the intermediate treatment product (1) and performing high-shear dispersion treatment to obtain an intermediate treatment product (2).

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