Cosmetics

Abstract

[Problem] To provide a cosmetic in which the dispersibility of metal oxide fine particles is excellent. [Solution] This cosmetic contains component (A), component (B), and component (C). (A) One or more selected from 1,1,1,3,5,5,5-heptamethyl-3-alkyl (C10-14) trisiloxanes. (B) Metal oxide fine particles. (C) A silicone oil having a number average molecular weight not less than 400 but less than 30,000 (excluding component (A)).

Description

[Technical field]

[0001] The present invention relates to a cosmetic material that can be used as a foundation, makeup base, sunscreen, lipstick, nail polish, face powder, etc. Background technology

[0002] In recent years, the demand for cosmetics has become ever more diverse, and in response to this, the product forms have also become more diverse, not only in terms of item composition such as foundation, sunscreen, lipstick, nail polish, and face powder, but also by further subdividing these, the form elements have been added such as liquid, powder, solid, emulsion, etc.

[0003] Many of these cosmetics require pigments or metal oxide sunscreen powders, but improving the dispersibility of these powders in a wide variety of cosmetic forms is an issue. To address this issue, techniques for improving the dispersibility of powders by using surface-treated powders or lipophilic surfactants are known.

[0004] In JP2013-139400A, JP2004-182729A, JP2015-124220A, and JP2016-210744A, surface-treated powders using various surface treatment agents are discussed in order to improve the dispersibility of the powder and adjust the feel.

[0005] Japanese Patent Application Laid-Open Nos. 3-264510, 2003-012466, 2003-146833, and 2003-226631 discuss improving the dispersibility of powders by using alkyl-modified trisiloxanes, including 1,1,1,3,5,5,5-heptamethyl-3-dodecyltrisiloxane, as lipophilic surfactants. Summary of the Invention

[0006] The present invention relates to a cosmetic preparation which has excellent dispersibility of metal oxide fine particles, is easy to incorporate, and has excellent stability over time.

[0007] In the above-mentioned conventional techniques, the improvement of dispersibility of powder as a cosmetic ingredient could not be achieved by using a surface-treated powder or a lipophilic surfactant. Excluding 3,5,5,5-heptamethyl-3-alkyl (C10-14) trisiloxane and the above 1,1,1,3,5,5,5-heptamethyl-3-alkyl (C10-14) trisiloxane By using silicone oil with a number average molecular weight of 400 or more and less than 30,000, The present inventors have found that the effect of improving the dispersibility of metal oxide fine particles can be improved by using the above-mentioned method, and have thus completed the present invention.

[0008] That is, the present invention is a cosmetic preparation containing the following components (A), (B), and (C). (A) one or more selected from 1,1,1,3,5,5,5-heptamethyl-3-alkyl(C10-14)trisiloxane (B) Metal oxide fine particles (C) Silicone oil with a number average molecular weight of 400 or more and less than 30,000 (excluding component (A))

[0009] In the cosmetic of the present invention, the dispersibility of the (B) component is improved by the combined use of the (A) component and the (C) component, so that the cosmetic has excellent stability over time and the separation of the contained components is suppressed. Furthermore, the improved dispersibility of the (B) component also enhances the ultraviolet protection effect, which is one of the effects of containing the (B) component, which is preferable.

[0010] In addition, since the cosmetic preparation of the present invention has improved dispersibility of component (B), the UV protection effect can be adjusted by adjusting the content of component (B). Furthermore, by adjusting the contents of components (A) and (C) according to the content of component (B), the cosmetic preparation of the present invention can be given a smooth and spreadable feel during use and a beautiful appearance. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Component (A) may be one or more selected from 1,1,1,3,5,5,5-heptamethyl-3-alkyl(C10-14)trisiloxanes, and component (A) may be in an oil form at room temperature.

[0012] It is believed that component (A) is a component that acts to increase the dispersibility of component (B) in the cosmetic composition when used in combination with component (C).

[0013] Non-limiting examples of component (A) include (A-1) 1,1,1,3,5,5,5-heptamethyl-3-decyltrisiloxane, (A-2) 1,1,1,3,5,5,5-heptamethyl-3-dodecyltrisiloxane, and (A-3) 1,1,1,3,5,5,5-heptamethyl-3-tetradecyltrisiloxane.

[0014] The above-mentioned components (A-1), (A-2) and (A-3) can each be used alone as component (A). When component (A) is used as the sole component, it is preferable to use component (A-2).

[0015] The component (A) that can be used is a mixture of the components (A-1) and (A-2), a mixture of the components (A-1) and (A-3), a mixture of the components (A-2) and (A-3), or a mixture of the components (A-1), (A-2), and (A-3).

[0016] When component (A) is used as a mixture of components (A-1) and (A-2) or components (A-2) and (A-3), the content of component (A-2) in 100% by mass of the mixture is preferably 50% by mass or more, more preferably 60% by mass or more, and even more preferably 70% by mass or more.

[0017] When the component (A) is used as a mixture of the components (A-1) and (A-3), the amount of the component (A-1) is preferably 20 to 80 mass%, more preferably 30 to 70 mass%, and even more preferably 40 to 60 mass% of the total amount of the components (A-1) and (A-3) (100 mass%). In this case, the amount of the component (A-3) is preferably 80 to 20 mass%, more preferably 70 to 30 mass%, and even more preferably 60 to 40 mass% of the total amount of the components (A-1) and (A-3) (100 mass%).

[0018] When the (A) component is used as a mixture of the (A-1), (A-2) and (A-3) components, the (A-1) component is preferably 5 to 80 mass%, more preferably 10 to 70 mass%, and even more preferably 20 to 60 mass% of the total 100 mass% of the (A-1), (A-2) and (A-3) components. In this case, the (A-2) component is preferably 10 to 70 mass%, more preferably 15 to 60 mass%, and even more preferably 20 to 50 mass% of the total 100 mass% of the (A-1), (A-2) and (A-3) components. In this case, the (A-3) component is preferably 10 to 70 mass%, more preferably 15 to 60 mass%, and even more preferably 20 to 50 mass% of the total 100 mass% of the (A-1), (A-2) and (A-3) components.

[0019] Non-limiting examples of the metal oxide fine particles of component (B) include fine particle iron oxide, fine particle titanium oxide, fine particle zinc oxide, fine particle zirconium oxide, fine particle cerium oxide, and combinations thereof.

[0020] The shape of the metal oxide fine particles of component (B) is not particularly limited and may be, for example, spherical, plate-like, regular or irregular. The metal oxide fine particles of component (B) may also be treated to be hydrophilic or hydrophobic.

[0021] The metal oxide fine particles of component (B) can be used without any particular limitation as long as they are used in ordinary cosmetics containing metal oxide fine particles. The particle size of the metal oxide fine particles of component (B) may be, for example, an average particle size of 10 μm or less, as measured by a laser diffraction / scattering method. The lower limit of the average particle size of the metal oxide fine particles of component (B) is not particularly limited, but may usually be about 0.1 μm.

[0022] The metal oxide fine particles of component (B) may be a component that functions to impart an ultraviolet protection effect. When the component has the function of imparting an ultraviolet protection effect, the level of the ultraviolet protection effect (for example, the ultraviolet protection level evaluated by the SPF value) can be adjusted by adjusting (increasing or decreasing) the content of component (B) in the cosmetic.

[0023] As the fine particle iron oxide, pigments such as, but not limited to, red iron oxide, ochre, magnetite or a combination thereof may be used. In addition, these pigments may be surface-treated to be hydrophobic.

[0024] The fine particle titanium dioxide can be produced by a method such as a sulfuric acid method or a chlorine method, and a commercially available product can also be used. Non-limiting examples of commercially available fine particle titanium dioxide include SIV series, TTO-55 series, TTO-S series (all manufactured by Ishihara Sangyo Kaisha, Ltd.), MT-100TV, MT-500V, MT-01 (all manufactured by Teika Corporation), etc.

[0025] Titanium oxide microparticles can be used after surface treatment is hydrophilized or hydrophobized as necessary.Hydrophilic treatment means can include surface treatment such as polyhydric alcohol treatment such as glycerin, hyaluronic acid treatment, etc.Hydrophobic treatment means can include surface treatment such as fluorine compound treatment, silicone treatment, alkyl treatment, alkylsilane treatment, metal soap treatment, water-soluble polymer treatment, amino acid treatment, N-acylamino acid treatment, lecithin treatment, organic titanate treatment, polyol treatment, acrylic resin treatment, methacrylic resin treatment, urethane resin treatment, etc.

[0026] The fine particle titanium dioxide or the surface-treated fine particle titanium dioxide can be blended directly into a powder-containing cosmetic composition. If necessary, the fine particle titanium dioxide can be used after being coated on the surface of other powders such as talc, mica, sericite, or other plate-like powders, silica, or spherical powders.

[0027] By coating plate-like or spherical powder with titanium dioxide fine particles, the aggregation of titanium dioxide fine particles is reduced, and a high ultraviolet protection effect is obtained, which is preferable. Also, by coating plate-like or spherical powder with titanium dioxide fine particles, the rough feeling in use that is peculiar to titanium dioxide fine particles is reduced, and a cosmetic product with a good feel in use is obtained, which is preferable.

[0028] The shape of the zinc oxide microparticles is not particularly limited. Commercially available products can be used as the zinc oxide microparticles. Non-limiting examples of commercially available products include FINEX-25, FINEX-30, FINEX-50 (all manufactured by Sakai Chemical Industry Co., Ltd.), MZ-300, MZ-500 (all manufactured by Teika Corporation), etc.

[0029] The zinc oxide microparticles can be used after the surface is hydrophilized or hydrophobized as required.Hydrophilic treatment means can include surface treatment such as polyhydric alcohol treatment such as glycerin, hyaluronic acid treatment, etc.Hydrophobic treatment means can include surface treatment such as fluorine compound treatment, silicone treatment, alkyl treatment, alkylsilane treatment, metal soap treatment, water-soluble polymer treatment, amino acid treatment, N-acylamino acid treatment, lecithin treatment, organic titanate treatment, polyol treatment, acrylic resin treatment, methacrylic resin treatment, urethane resin treatment, etc.

[0030] The fine particle zinc oxide and the surface-treated fine particle zinc oxide can be blended directly into powder-containing cosmetics, or, if necessary, can be used after coating the surface of other powders such as talc, mica, sericite, and other plate-like powders, silica, and spherical powders.

[0031] Coating plate-like or spherical powder with zinc oxide fine particles is preferable because it reduces the aggregation of zinc oxide fine particles and provides a high ultraviolet protection effect. Also, coating plate-like or spherical powder with zinc oxide fine particles is preferable because it reduces the rough feeling in use that is peculiar to zinc oxide fine particles and provides a cosmetic product with a good feel in use.

[0032] Component (C) is a silicone oil having a number average molecular weight of 400 or more and less than 30,000. , does not contain any component corresponding to component (A).

[0033] The number average molecular weight of component (C) may be measured by a known measurement method such as gel permeation chromatography, liquid chromatography, gas chromatography, static light scattering, etc. In general, it may be measured by gel permeation chromatography, using toluene as the solvent and polystyrene as the standard. When the molecular weight is below 1000, gas chromatography may be used.

[0034] Silicone oils with a number average molecular weight of less than 400 tend to be relatively volatile, and may evaporate during use, reducing powder dispersibility. Also, silicone oils with a number average molecular weight of 30,000 or more have high viscosity, which may reduce the dispersibility of each powder. Therefore, the component (C) is a silicone oil having a number average molecular weight of 400 or more and less than 30,000. In terms of good dispersibility of powder, the component (C) is preferably a silicone oil having a number average molecular weight of 400 or more and less than 25,000. More preferably, the silicone oil has a molecular weight of not less than 20,000.

[0035] Component (C) is a component that acts to increase the dispersibility of component (B) in the cosmetic composition when used in combination with component (A). By improving the dispersibility of component (B) in the cosmetic composition, the UV protection effect, which is one of the effects of containing component (B), is also increased, which is preferable.

[0036] In one non-limiting embodiment, the silicone oil of component (C) may have a boiling point or thermal decomposition temperature of 220° C. or higher. The boiling point or thermal decomposition temperature of component (C) may be measured under atmospheric pressure.

[0037] The silicone oil of component (C) is preferably one represented by the following average composition formula: RaSiO (4-a) / 2 (wherein R is a substituted or unsubstituted monovalent hydrocarbon group, the monovalent hydrocarbon groups may be the same or different, and a is a positive number less than 4).

[0038] Examples of the substituted or unsubstituted monovalent hydrocarbon group for R include those having 1 to 12 carbon atoms, particularly 1 to 8 carbon atoms, excluding the substituent. Non-limiting examples of the substituted or unsubstituted monovalent hydrocarbon group for R include alkyl groups such as methyl, ethyl, hexyl, and decyl, aryl groups such as phenyl, aralkyl groups such as 2-methylphenylethyl, amino-containing groups such as 3-aminopropyl and 2-aminoethyl-3-aminopropyl, and polyoxyalkylene groups such as polyoxyethylene, polyoxypropylene, and polyoxyethylene-polyoxypropylene.

[0039] From the viewpoint of improving the dispersibility of the metal oxide fine particles of component (B) together with component (A), it is preferable that component (C) has a surface tension of 30 mN / m or less. The surface tension of component (C) is preferably 30 mN / m or less, particularly preferably 25 mN / m or less, as measured, for example, by the plate method (Wilhelmy method) or the ring method (Dunouy method).

[0040] More preferred examples of the silicone oil of component (C) include polydimethylsiloxane, polydimethylsiloxane-polydiphenylsiloxane copolymer, polymethyltrimethylsilylsiloxane-polydiphenylsiloxane copolymer, trimethylsilyl-terminated mono- or polytrimethylsilylphenylsiloxane, polyether-modified oil, and combinations of these.

[0041] Non-limiting examples of polyether modified oils include polyoxyethylene modified silicone oils, polyoxyethylene-polyoxypropylene modified silicone oils, polyoxypropylene modified silicone oils, or combinations thereof.

[0042] From the viewpoint of improving the dispersibility of the component (B) in the cosmetic preparation, the mass ratio of the content of the component (A) to the content of the component (C) ((A) / (C)) is preferably in the range of 0.1 to 5, more preferably in the range of 0.15 to 3, and even more preferably in the range of 0.15 to 2.

[0043] The cosmetic preparation of the present invention preferably contains the components (A), (B), and (C) in a total amount of 3 to 85 mass%, more preferably 5 to 80 mass%, and even more preferably 20 to 70 mass%.

[0044] The cosmetic preparation of the present invention improves the dispersibility of component (B) by using component (A) and component (C) in combination, and therefore the contents of component (A) and component (C) can be adjusted using the content of component (B) as a reference value.

[0045] The contents of components (A) and (C) based on component (B) can vary depending on multiple factors such as the desired physical and chemical properties of the cosmetic, the type of cosmetic (e.g., skin cosmetic), etc. For example, when the content of component (B) is 100 parts by mass, the content of component (A) is preferably 20 to 800 parts by mass, more preferably 20 to 700 parts by mass, and even more preferably 20 to 600 parts by mass. When the content of component (B) is 100 parts by mass, the content of component (C) is preferably 20 to 1500 parts by mass, more preferably 20 to 1300 parts by mass, and even more preferably 20 to 1200 parts by mass.

[0046] In addition to components (A), (B), and (C), various raw materials typically used in cosmetics may be added to the cosmetic of the present invention depending on the type and formulation of the cosmetic. For example, the cosmetic of the present invention may contain the following components selected as appropriate:

[0047] The cosmetic of the present invention may contain, as an oily component, but is not limited to, for example, solid paraffin, ceresin, beeswax, carnauba wax, Japan wax, candelilla wax, stearic acid, cetanol, cholesterol, microcrystalline wax, petrolatum, lanolin, partially hydrogenated oil, squalene, liquid paraffin, castor oil, diglyceride, triglyceride, higher fatty acid, higher alcohol, perfluoropolyether, perfluorodecalin, perfluorooctane, ester oil, octyldodecyl myristate, octyldodecyl oleate, neopentyl glycol dioctanoate, or combinations thereof.

[0048] The cosmetic composition of the present invention may contain, as an aqueous component, for example, glycerin, sorbitol, propylene glycol, 1,3-butylene glycol, polyethylene glycol, etc., but is not limited thereto. The aqueous dispersion medium may contain, for example, alcohol, carboxyvinyl polymers, cellulose derivatives, sodium alginate, ethanol, or combinations thereof.

[0049] The cosmetic composition of the present invention may contain, as a surfactant, one or a combination of two or more selected from the following group, but is not limited thereto.

[0050] anionic emulsifiers such as sodium alkylbenzenesulfonates, such as sodium hexylbenzenesulfonate, sodium octylbenzenesulfonate, sodium decylbenzenesulfonate, sodium dodecylbenzenesulfonate, sodium cetylbenzenesulfonate, sodium myristylbenzenesulfonate; sodium alkylnaphthylsulfonates, such as sodium butylnaphthylsulfonate; sodium polyoxyethylene monoalkylether sulfates, such as sodium polyoxyethylene octyl ether sulfate, sodium polyoxyethylene decyl ether sulfate, sodium polyoxyethylene eicosyl ether sulfate; sodium polyoxyethylene mono(alkylphenyl)ether sulfates, such as sodium polyoxyethylene decylphenyl ether sulfate, or combinations thereof.

[0051] Cationic emulsifiers such as quaternary ammonium salts such as octyltrimethylammonium chloride, dodecyltrimethylammonium chloride, hexadecyltrimethylammonium chloride, tallow trimethylammonium chloride, coconut trimethylammonium chloride, octyldimethylbenzylammonium chloride, decyldimethylbenzylammonium chloride, dioctadecyldimethylammonium chloride, or combinations thereof.

[0052] Glycerol fatty acid esters such as glyceryl monolaurate, glyceryl monomyristate, glyceryl monostearate, glyceryl monooleate; polyglycerol fatty acid esters, sorbitan fatty acid esters, polyoxyethylene glycerol fatty acid esters, polyoxyethylene sorbitan fatty acid esters and polyoxyethylene fatty acid esters having similar fatty acid residues; nonionic emulsifiers such as polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether or combinations thereof.

[0053] The cosmetic preparation of the present invention may contain, without limitation, other ingredients such as coloring agents such as organic pigments and organic dyes, preservatives, antioxidants, colorants, thickeners, pH adjusters, fragrances, UV absorbers, moisturizers, blood circulation promoters, cooling agents, antiperspirants, bactericides, and skin activators, as long as they do not impair the objectives and effects of the present invention.

[0054] The cosmetic of the present invention may also contain a desired amount of water depending on the type and formulation of the cosmetic.

[0055] The cosmetic of the present invention is preferably a skin cosmetic selected from foundation, makeup base, sunscreen, lipstick, nail polish, eye shadow, and face powder.

[0056] The cosmetic of the present invention includes the following inventions.

[0057] (1) A cosmetic preparation containing the following ingredients (A), (B), and (C). (A) one or more selected from 1,1,1,3,5,5,5-heptamethyl-3-alkyl(C10-14)trisiloxane (B) Metal oxide fine particles (C) Silicone oil with a number average molecular weight of 400 or more and less than 30,000 (excluding component (A))

[0058] (2) The cosmetic preparation according to (1), wherein the component (A) is one or more selected from the group consisting of (A-1) 1,1,1,3,5,5,5-heptamethyl-3-decyltrisiloxane, (A-2) 1,1,1,3,5,5,5-heptamethyl-3-dodecyltrisiloxane, and (A-3) 1,1,1,3,5,5,5-heptamethyl-3-tetradecyltrisiloxane.

[0059] (3) A cosmetic preparation according to (1) or (2), in which the component (A) is one component selected from the group consisting of (A-1) 1,1,1,3,5,5,5-heptamethyl-3-decyltrisiloxane, (A-2) 1,1,1,3,5,5,5-heptamethyl-3-dodecyltrisiloxane, and (A-3) 1,1,1,3,5,5,5-heptamethyl-3-tetradecyltrisiloxane.

[0060] (4) A cosmetic preparation according to (1) or (2), in which the component (A) is two components selected from the group consisting of (A-1) 1,1,1,3,5,5,5-heptamethyl-3-decyltrisiloxane, (A-2) 1,1,1,3,5,5,5-heptamethyl-3-dodecyltrisiloxane, and (A-3) 1,1,1,3,5,5,5-heptamethyl-3-tetradecyltrisiloxane.

[0061] (5) A cosmetic preparation according to (1) or (2), in which the component (A) contains three components: (A-1) 1,1,1,3,5,5,5-heptamethyl-3-decyltrisiloxane, (A-2) 1,1,1,3,5,5,5-heptamethyl-3-dodecyltrisiloxane, and (A-3) 1,1,1,3,5,5,5-heptamethyl-3-tetradecyltrisiloxane.

[0062] (6) The cosmetic preparation according to (1) or (2), wherein the component (A) is two components selected from the group consisting of (A-1) 1,1,1,3,5,5,5-heptamethyl-3-decyltrisiloxane, (A-2) 1,1,1,3,5,5,5-heptamethyl-3-dodecyltrisiloxane, and (A-3) 1,1,1,3,5,5,5-heptamethyl-3-tetradecyltrisiloxane, and when the two components are the component (A-1) and the component (A-2) or the component (A-2) and the component (A-3), the content of the component (A-2) is 50% by mass or more of the component (A).

[0063] (7) The cosmetic preparation according to (1) or (2), wherein the component (A) is two components selected from (A-1) 1,1,1,3,5,5,5-heptamethyl-3-decyltrisiloxane, (A-2) 1,1,1,3,5,5,5-heptamethyl-3-dodecyltrisiloxane, and (A-3) 1,1,1,3,5,5,5-heptamethyl-3-tetradecyltrisiloxane, and when the two components are the component (A-1) and the component (A-2) or the component (A-2) and the component (A-3), the content of the component (A-2) is 60% by mass or more of the component (A).

[0064] (8) The cosmetic preparation according to (1) or (2), wherein the component (A) is two components selected from (A-1) 1,1,1,3,5,5,5-heptamethyl-3-decyltrisiloxane, (A-2) 1,1,1,3,5,5,5-heptamethyl-3-dodecyltrisiloxane, and (A-3) 1,1,1,3,5,5,5-heptamethyl-3-tetradecyltrisiloxane, and when the two components are the component (A-1) and the component (A-2) or the component (A-2) and the component (A-3), the content of the component (A-2) is 70% by mass or more of the component (A).

[0065] (9) The cosmetic preparation according to (2), in which the (A) component is used as a mixture of the (A-1) component and the (A-3) component, and in which the combined amount of the (A-1) component and the (A-3) component is 20 to 80 mass% and 80 to 20 mass%, respectively, of 100 mass% of the total amount of the (A-1) component and the (A-3) component.

[0066] (10) The cosmetic preparation according to (2), in which the component (A) is used as a mixture of the components (A-1) and (A-3), and the combined amount of the components (A-1) and (A-3) is 30 to 70 mass% and the amount of the component (A-3) is 70 to 30 mass%, relative to 100 mass% of the total amount of the components (A-1) and (A-3).

[0067] (11) The cosmetic preparation according to (2), in which the component (A) is used as a mixture of the components (A-1) and (A-3), and the combined amount of the components (A-1) and (A-3) is 40 to 60 mass% and the amount of the component (A-3) is 60 to 40 mass%, relative to 100 mass% of the total amount of the components (A-1) and (A-3).

[0068] (12) The cosmetic preparation according to (2), in which the component (A) is used as a mixture of the components (A-1), (A-2), and (A-3), and in which the total of the components (A-1), (A-2), and (A-3) is 100% by mass, the component (A-1) accounts for 5 to 80% by mass, the component (A-2) accounts for 10 to 70% by mass, and the component (A-3) accounts for 10 to 70% by mass.

[0069] (13) The cosmetic preparation according to (2), in which the component (A) is used as a mixture of the components (A-1), (A-2), and (A-3), and in which the total of the components (A-1), (A-2), and (A-3) is 10 to 70 mass% of the component (A-1), 15 to 60 mass% of the component (A-2), and 15 to 60 mass% of the component (A-3).

[0070] (14) The cosmetic preparation according to (2), in which the component (A) is used as a mixture of the components (A-1), (A-2), and (A-3), and in which the total of the components (A-1), (A-2), and (A-3) is 100% by mass, the component (A-1) accounts for 20 to 60% by mass, the component (A-2) accounts for 20 to 50% by mass, and the component (A-3) accounts for 20 to 50% by mass.

[0071] (15) A cosmetic preparation according to any one of (1) to (14), wherein the metal oxide fine particles of the component (B) are selected from fine iron oxide, fine titanium oxide, fine zinc oxide, fine zirconium oxide, fine cerium oxide, or a combination thereof.

[0072] (16) A cosmetic preparation according to any one of (1) to (14), in which the metal oxide fine particles of component (B) are selected from fine iron oxide, fine titanium oxide, fine zinc oxide, fine zirconium oxide, fine cerium oxide, or a combination thereof, and have been subjected to a hydrophilization treatment or a hydrophobization treatment.

[0073] (17) A cosmetic preparation according to any one of (1) to (16), in which the metal oxide fine particles of component (B) have an average primary particle diameter of 100 nm or less, or even 80 nm or less, with the lower limit of the average particle diameter being 30 nm.

[0074] (18) A cosmetic preparation according to any one of (1) to (17), wherein the metal oxide fine particles of component (B) are fine iron oxide particles.

[0075] (19) A cosmetic preparation according to any one of (1) to (17), in which the metal oxide fine particles of component (B) are fine iron oxide particles, and the fine iron oxide particles are a pigment selected from red iron oxide, ochre, magnetite, or a combination thereof.

[0076] (20) A cosmetic preparation according to any one of (1) to (17), wherein the metal oxide fine particles of the component (B) are fine iron oxide particles, and the fine iron oxide particles have been subjected to a hydrophobic treatment.

[0077] (21) A cosmetic preparation according to any one of (1) to (17), wherein the metal oxide fine particles of the component (B) are titanium dioxide fine particles.

[0078] (22) A cosmetic preparation according to any one of (1) to (17), in which the metal oxide fine particles of component (B) are titanium dioxide fine particles, and the titanium dioxide fine particles are coated on the surface of another powder selected from talc, mica, plate-like powders including sericite, silica, and spherical powders.

[0079] (23) A cosmetic preparation according to any one of (1) to (17), in which the metal oxide fine particles of component (B) are titanium dioxide fine particles, and the surface of the titanium dioxide fine particles has been subjected to a hydrophilization or hydrophobization treatment.

[0080] (24) A cosmetic preparation according to any one of (1) to (17), wherein the metal oxide fine particles of component (B) are fine titanium dioxide particles, and the fine titanium dioxide particles have been surface-treated to be hydrophilic by treatment with a polyhydric alcohol containing glycerin or with hyaluronic acid, or the fine titanium dioxide particles have been surface-treated to be hydrophobic by treatment selected from the group consisting of treatment with a fluorine compound, treatment with a silicone, treatment with an alkyl, treatment with an alkylsilane, treatment with a metal soap, treatment with a water-soluble polymer, treatment with an amino acid, treatment with an N-acylamino acid, treatment with lecithin, treatment with an organic titanate, treatment with a polyol, treatment with an acrylic resin, treatment with a methacrylic resin, and treatment with a urethane resin.

[0081] (25) A cosmetic preparation according to any one of (1) to (17), wherein the metal oxide fine particles of the component (B) are zinc oxide fine particles.

[0082] (26) A cosmetic preparation according to any one of (1) to (17), in which the metal oxide fine particles of component (B) are zinc oxide fine particles, and the zinc oxide fine particles are coated on the surface of another powder selected from talc, mica, plate-like powders including sericite, silica, and spherical powders.

[0083] (27) A cosmetic preparation according to any one of (1) to (17), in which the metal oxide fine particles of component (B) are zinc oxide fine particles, and the surface of the zinc oxide fine particles has been subjected to a hydrophilic or hydrophobic treatment.

[0084] (28) A cosmetic preparation according to any one of (1) to (17), in which the metal oxide microparticles of component (B) are microparticles of zinc oxide, the surface of which has been hydrophilized by treatment with a polyhydric alcohol containing glycerin or with hyaluronic acid, or the surface of which has been hydrophobized by treatment selected from the group consisting of treatment with a fluorine compound, treatment with a silicone, treatment with an alkyl group, treatment with an alkyl silane, treatment with a metal soap, treatment with a water-soluble polymer, treatment with an amino acid, treatment with an N-acyl amino acid, treatment with lecithin, treatment with an organic titanate, treatment with a polyol, treatment with an acrylic resin, treatment with a methacrylic resin, and treatment with a urethane resin.

[0085] (29) A cosmetic preparation according to any one of (1) to (28), in which the silicone oil of component (C) is represented by the following composition formula: RaSiO (4-a) / 2 (wherein R is a substituted or unsubstituted monovalent hydrocarbon group, the monovalent hydrocarbon groups may be the same or different, and a is a positive number less than 4).

[0086] (30) A cosmetic preparation according to any one of (1) to (29), in which the silicone oil of component (C) has a surface tension of 30 mN / m or less.

[0087] (31) A cosmetic according to any one of (1) to (29), wherein the silicone oil of component (C) is selected from polydimethylsiloxane, polydimethylsiloxane-polydiphenylsiloxane copolymer, polymethyltrimethylsilylsiloxane-polydiphenylsiloxane copolymer, trimethylsilyl-terminated mono- or polytrimethylsilylphenylsiloxane, polyoxyethylene-modified silicone oil, polyoxyethylene-polyoxypropylene-modified silicone oil, polyoxypropylene-modified silicone oil, or a polyether-modified oil selected from these, or a combination thereof.

[0088] (32) The mass ratio ((A) / (C)) of the content of component (A) to the content of component (C) is 0. A cosmetic composition according to any one of (1) to (31), wherein the range is 1 to 5.

[0089] (33) The mass ratio of the content of component (A) to the content of component (C) ((A) / (C)) is 0. A cosmetic composition according to any one of (1) to (31), wherein the range is 15 to 3.

[0090] (3432) A cosmetic preparation according to any one of (1) to (31), comprising 3 to 85 mass% in total of components (A), (B), and (C).

[0091] (35) The cosmetic preparation according to any one of (1) to (31), wherein the total amount of the components (A), (B), and (C) is 5 to 80 mass %.

[0092] (36) The cosmetic preparation according to any one of (1) to (31), in which when the content of the (B) component is 100 parts by mass, the content of the (A) component is 20 to 800 parts by mass, and the content of the (C) component is 20 to 1,500 parts by mass.

[0093] (37) The cosmetic preparation according to any one of (1) to (31), in which when the content of the (B) component is 100 parts by mass, the content of the (A) component is 20 to 700 parts by mass, and the content of the (C) component is 20 to 1,300 parts by mass.

[0094] (38) The cosmetic preparation according to any one of (1) to (31), in which when the content of the (B) component is 100 parts by mass, the content of the (A) component is 20 to 600 parts by mass, and the content of the (C) component is 20 to 1,200 parts by mass.

[0095] (39) A cosmetic composition according to any one of (1) to (38), which contains, in addition to components (A), (B), and (C), an oil component selected from solid paraffin, ceresin, beeswax, carnauba wax, Japan wax, candelilla wax, stearic acid, cetanol, cholesterol, microcrystalline wax, petrolatum, lanolin, partially hydrogenated oil, squalene, liquid paraffin, castor oil, diglyceride, triglyceride, higher fatty acid, higher alcohol, perfluoropolyether, perfluorodecalin, perfluorooctane, ester oil, octyldodecyl myristate, octyldodecyl oleate, neopentyl glycol dioctanoate, or a combination thereof.

[0096] (40) In addition to components (A), (B), and (C), the aqueous component may contain glycerin, sorbitol, propylene glycol, 1,3-butylene glycol, polyethylene glycol, The cosmetic preparation according to any one of (1) to (38), which contains one selected from the group consisting of propylene glycol, carboxyvinyl polymer, cellulose derivatives, sodium alginate, ethanol, and combinations thereof.

[0097] (41) A cosmetic preparation according to any one of (1) to (40), which contains, in addition to the components (A), (B), and (C), one or a combination of two or more surfactants selected from the group consisting of the following:

[0098] anionic emulsifiers selected from sodium alkylbenzenesulfonates such as sodium hexylbenzenesulfonate, sodium octylbenzenesulfonate, sodium decylbenzenesulfonate, sodium dodecylbenzenesulfonate, sodium cetylbenzenesulfonate, and sodium myristylbenzenesulfonate; sodium alkylnaphthylsulfonates such as sodium butylnaphthylsulfonate; sodium polyoxyethylene monoalkylether sulfates such as sodium polyoxyethylene octyl ether sulfate, sodium polyoxyethylene decyl ether sulfate, and sodium polyoxyethylene eicosyl ether sulfate; sodium polyoxyethylene mono(alkylphenyl)ether sulfates such as sodium polyoxyethylene decylphenyl ether sulfate, or combinations thereof.

[0099] A cationic emulsifier selected from quaternary ammonium salts such as octyltrimethylammonium chloride, dodecyltrimethylammonium chloride, hexadecyltrimethylammonium chloride, tallow trimethylammonium chloride, coconut trimethylammonium chloride, octyldimethylbenzylammonium chloride, decyldimethylbenzylammonium chloride, dioctadecyldimethylammonium chloride, or combinations thereof.

[0100] Nonionic emulsifiers selected from glycerin fatty acid esters such as glyceryl monolaurate, glyceryl monomyristate, glyceryl monostearate, and glyceryl monooleate; polyglycerin fatty acid esters, sorbitan fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene sorbitan fatty acid esters, and polyoxyethylene fatty acid esters having similar fatty acid residues; polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, and polyoxyethylene oleyl ether, or combinations thereof.

[0101] (42) A cosmetic preparation according to any one of (1) to (41), which contains, in addition to the components (A), (B), and (C), a coloring agent including an organic pigment or an organic dye, a preservative, an antioxidant, a coloring agent, a thickener, a pH adjuster, a fragrance, an ultraviolet absorber, a moisturizer, a blood circulation promoter, a cooling agent, an antiperspirant, a germicide, a skin activator, water, or a combination thereof.

[0102] (43) The cosmetic preparation according to any one of (1) to (42), which is in any one of liquid, powder, solid, and emulsion forms.

[0103] (44) The cosmetic preparation according to any one of (1) to (42), which is a skin cosmetic preparation selected from foundation, makeup base, sunscreen, lipstick, eye shadow, nail polish, and face powder. EXAMPLES

[0104] Examples of the present invention are shown below, but the present invention is not limited to these examples.

[0105] The components used in the examples and comparative examples are as follows. In the following, "synthetic products" refers to products synthesized by the inventors. Component (A) 1,1,1,3,5,5,5-heptamethyl-3-dodecyltrisiloxane: synthetic product 1,1,1,3,5,5,5-heptamethyl-3-decyltrisiloxane: synthetic product 1,1,1,3,5,5,5-heptamethyl-3-tetradecyltrisiloxane: Synthetic product (A) Comparative component 1,1,1,3,5,5,5-Heptamethyl-3-octyltrisiloxane: Momentive Performance Materials: Silsoft 034

[0106] (B) Component Surface hydrophobic treated titanium oxide / aluminum hydroxide: Daito Kasei Kogyo Co., Ltd.: SI01-2 TiO2CR-50 Surface-hydrophobic treated zinc oxide: Daito Kasei Kogyo Co., Ltd.: SI01-4 ZnO-300 Surface hydrophobic treated iron oxide (yellow): Daito Kasei Kogyo Co., Ltd.: SI-2 YELLOW LL-100P Surface hydrophobic treated iron oxide (red): Daito Kasei Kogyo Co., Ltd.: SI-2 RED R-516P Surface hydrophobic treated iron oxide (black): Daito Kasei Kogyo Co., Ltd.: SI-2 BLACK BL-100P

[0107] (C) Component Polydimethylsiloxane (viscosity 5mm 2 / s, molecular weight 680 (calculated from structure), surface tension 19.7mN / m): Momentive Performance Materials, Inc.: Ele ment14 PDMS5-JC

[0108] (Other Ingredients) Ethylhexyl methoxycinnamate: BASF: Uvinul MC80N Trimethylsiloxysilicate: Momentive Performance Materials: SR1000 Cyclopentasiloxane, (Dimethicone / Vinyl Dimethicone) Crosspolymer: Momentive Performance Materials: SFE839 gel Sorbitan stearate: Nikko Chemicals: NIKKOL SS-10V Sorbitan sesquiisostearate: Cosmol 182V (manufactured by Nisshin Oillio Group) Glycerin: Reagent Polysorbate 20: NOF Corp.: NONIONLT-20 Sodium chloride: Reagent Phenoxyethanol: Reagent

[0109] Examples 1 to 5, Comparative Examples 1 to 3 The components of phase I, phase II, and phase III shown in Table 1 were each stirred until uniform, and then stirred at 70° C. for 30 minutes to prepare a mixture of each phase. Next, the mixture of phase II was added to the mixture of phase I and stirred until uniform, then the mixture of phase III was added and stirred until uniform, and then stirred with a homogenizer at 2,000 rpm for 5 minutes to obtain a makeup base.

[0110] The following evaluation tests were carried out, and the results are shown in Table 1. The numerical values ​​for the components in Table 1 indicate mass %.

[0111] (Skin application sensation) An appropriate amount (about 1 g) of each of the cosmetics of the Examples and Comparative Examples was taken in the hand, applied to the face, and the feel when spread with fingers was evaluated. The evaluation was performed by 10 panel members on a 5-point scale (5 points: excellent, 4 points: slightly excellent, 3 points: equal, 2 points: slightly inferior, 1 point: inferior), with Comparative Example 1 being given a score of 3, and the average scores are shown in Table 1.

[0112] (Appearance after application) The condition of the application feel on the skin after the test was visually observed by 10 panel members on a 5-point scale (5 points: excellent, 4 points: slightly better, 3 points: equal, 2 points: slightly worse, 1 point: worse), with Comparative Example 1 being given 3 points, and the average scores are shown in Table 1.

[0113] (Appearance after storage for 1 month at 50℃) After the cosmetics of the Examples and Comparative Examples were produced, they were placed in glass containers and stored at 50° C. for one month, after which the appearance was visually observed.

[0114] [Table 1]

[0115] The evaluation of the feel of application to the skin and the appearance after application was rated at an average score of 3.8 points or more for Examples 1 to 5. In the comparative examples 1 to 3, the scores were 3.2 points or less, and almost all scores were 3 points or less. After one month at 0° C., the appearance of Examples 1 to 5 was uniform and no separation was observed, whereas the appearance of Comparative Examples 1 to 3 showed separation.

[0116] Comparing Examples 1 to 5 with Comparative Examples 1 to 3, it was confirmed that the combined use of components (A) and (C) improved the dispersibility of component (B).

[0117] TIFF0007604718000002.tif142170Each value is in mass%, and the total is 100 mass%. (A), (B), and (C) indicate the components corresponding to (A), (B), and (C), respectively. For example, (7) contains polyoxyethylene-polyoxypropylene modified silicone oil.

[0118] (Production method) The above components (1)-(7) and components (8)-(13) were mixed until uniform, and then the uniform mixture of components (1)-(7) and the uniform mixture of components (8)-(13) were mixed at 70°C for 30 minutes to obtain a uniform mixture of components (1)-(13). Next, components (14)-(16) were uniformly dissolved at 70°C and added to the uniform mixture of components (1)-(13) and mixed, and the mixture was then stirred with a homogenizer at 2,000 rpm for 5 minutes to obtain a liquid foundation.

[0119] (evaluation) The obtained liquid foundation was a uniformly dispersed liquid without lumps, was smooth and spreadable when applied to the skin, and had a soft and smooth texture after drying. This liquid foundation was also stable after one month at 50°C.

[0120] TIFF0007604718000003.tif108170

[0121] (Production method) The above components (1) to (8) were mixed at 90-95° C. until uniform, and then components (9) and (10) were added and mixed until uniform. The mixture was poured into a container and cooled to obtain a concealer.

[0122] (evaluation) The concealer obtained was uniform and free of lumps, and when applied to the skin it spread smoothly and easily, was thin with no uneven coloring, and had a strong sense of coverage.

[0123] TIFF0007604718000004.tif195170

[0124] (Production method) The above components (1) to (5) and components (6) to (16) were mixed until uniform, and then heated to 80°C. The mixture of components (6) to (16) was added to the mixture of components (1) to (5) while stirring, and the pH was adjusted to 6 to 7 with triethanolamine, and stirring was continued to obtain a uniform solution. After cooling to 40°C, components (17) and (18) were added and stirred to obtain an oil-in-water sunscreen.

[0125] (evaluation) The obtained sunscreen was uniform and free of lumps, and when applied to the skin it spread smoothly and easily, without any unevenness.

[0126] TIFF0007604718000005.tif160170

[0127] (Production method) The above ingredients (1) to (3) were thoroughly stirred to obtain a homogeneous liquid, which was then heated to 82-85°C, ingredients (4) to (9) were added, and the mixture was stirred until homogeneous. At 87°C, ingredients (10) to (17) were stirred until homogeneous, and the mixture was added to the mixture of ingredients (1) to (9) and stirred until homogeneous. The mixture was cooled to 60°C, ingredient (18) was added, and the mixture was stirred until homogeneous. The mixture was then cooled to room temperature to obtain a mascara.

[0128] (evaluation) The resulting mascara was uniform and free of lumps, and when applied to the skin it spread smoothly and easily, without uneven application.

[0129] TIFF0007604718000006.tif94170

[0130] (Production method) The above components (1) to (3) and components (4) to (7) were each stirred at 80°C until homogenous, and the mixture of components (4) to (9) was added to the mixture of components (1) to (3), stirred until homogenous, and cooled to room temperature to obtain an oil-in-water body cream.

[0131] (evaluation) The obtained body cream spread smoothly and easily on application to the skin, without any unevenness. [Industrial Applicability]

[0132] The cosmetic of the present invention can be in any form of liquid, powder, solid, or emulsion, and can be used as a skin cosmetic selected from foundation, makeup base, sunscreen, lipstick, eye shadow, nail polish, and face powder.

Claims

1. A cosmetic preparation comprising the following components (A), (B), and (C): Component (A) is one or more selected from 1,1,1,3,5,5,5-heptamethyl-3-alkyl (C10-14) trisiloxanes, and includes at least either (A-1) 1,1,1,3,5,5,5-heptamethyl-3-decyltrisiloxane or (A-2) 1,1,1,3,5,5,5-heptamethyl-3-dodecyltrisiloxane. (B) Metal oxide fine particles (C) A silicone oil having a number average molecular weight of 400 or more and less than 30,000, selected from polydimethylsiloxane, polydimethylsiloxane-polydiphenylsiloxane copolymer, polymethyltrimethylsilylsiloxane-polydiphenylsiloxane copolymer, trimethylsilyl-terminated mono- or polytrimethylsilylphenylsiloxane, polyether-modified oil, or a combination thereof (excluding component (A)).

2. 2. The cosmetic preparation according to claim 1, wherein the component (A) is any one of the components (A-1) and (A-2), (A-1) and (A-3), and (A-2) and (A-3) selected from the group consisting of (A-1) 1,1,1,3,5,5,5-heptamethyl-3-decyltrisiloxane, (A-2) 1,1,1,3,5,5,5-heptamethyl-3-dodecyltrisiloxane, and (A-3) 1,1,1,3,5,5,5-heptamethyl-3-tetradecyltrisiloxane.

3. 2. The cosmetic preparation according to claim 1, wherein component (A) is a mixture of three components: (A-1) 1,1,1,3,5,5,5-heptamethyl-3-decyltrisiloxane, (A-2) 1,1,1,3,5,5,5-heptamethyl-3-dodecyltrisiloxane, and (A-3) 1,1,1,3,5,5,5-heptamethyl-3-tetradecyltrisiloxane.

4. 2. The cosmetic preparation according to claim 1, wherein the metal oxide fine particles of component (B) are selected from fine iron oxide, fine titanium oxide, fine zinc oxide, fine zirconium oxide, fine cerium oxide, or a combination thereof.

5. 2. The cosmetic preparation according to claim 1, wherein the metal oxide fine particles of component (B) are selected from fine iron oxide, fine titanium oxide, fine zinc oxide, fine zirconium oxide, fine cerium oxide, or a combination thereof, and have been subjected to a hydrophilization treatment or a hydrophobization treatment.

6. 2. The cosmetic composition according to claim 1, wherein the silicone oil of component (C) is represented by the following formula: RaSiO （４－ａ）／２ wherein R is a substituted or unsubstituted monovalent hydrocarbon group, the monovalent hydrocarbon groups may be the same or different, and a is a positive number less than 4.

7. 2. The cosmetic preparation according to claim 1, wherein the silicone oil of component (C) has a surface tension of 30 mN / m or less.

8. 2. The cosmetic preparation according to claim 1, wherein the mass ratio ((A) / (C)) of the content of the component (A) to the content of the component (C) is in the range of 0.1 to 5.

9. 2. The cosmetic preparation according to claim 1, comprising 3 to 85% by mass in total of the components (A), (B), and (C).

10. The cosmetic preparation according to any one of claims 1 to 9, which is in any one of the following dosage forms: liquid, powder, solid, and emulsion.

11. 10. The cosmetic according to any one of claims 1 to 9, which is a skin cosmetic selected from the group consisting of foundation, makeup base, sunscreen, lipstick, eye shadow, nail polish, face powder, concealer, mascara, and body cream.

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