Oil-in-water emulsion cosmetics

Abstract

To provide an oil-in-water type emulsion cosmetic having an ultraviolet ray-protecting effect, an effect of suppressing shininess caused by sebum, and excellent temporal stability.SOLUTION: An oil-in-water type emulsion cosmetic has the following components (A), (B), (C) and (D), and 0.2 or more and 10 or less of the content mass ratio [(B) / (A)] of the component (B) to the component (A). (A) ultraviolet ray absorber having siloxane bond in molecules, (B) highly polymerized silicone oil, (C) poly(meth)acrylamide compound, and (D) hydrophobized powder.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to an oil-in-water type emulsified cosmetic.

Background Art

[0002] In recent years, the importance of sunburn prevention in daily life has been pointed out, and oil-in-water type sunscreens that are easy to use continuously with a refreshing feeling have been developed. For example, Patent Document 1 describes an oil-in-water type emulsified cosmetic in which, in addition to liquid oil, a polyacrylamide compound is blended together with specific amounts of a specific solid organic ultraviolet absorber and hydrophobized fine particle metal oxide powder, and it is said to have a high ultraviolet protection effect, excellent stability over time, and little viscosity change over time.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] [[ID=三十五]]However, the oil-in-water type emulsified cosmetic described in Patent Document 1 has insufficient effect of suppressing greasiness caused by sebum. The present invention relates to providing an oil-in-water type emulsified cosmetic excellent in ultraviolet protection effect, effect of suppressing greasiness caused by sebum, and stability over time.

Means for Solving the Problems

[0005] The present inventors have found that an oil-in-water type emulsified cosmetic in which an ultraviolet absorber having a siloxane bond in the molecule and a highly polymerized silicone oil are combined at a specific content mass ratio together with a poly(meth)acrylamide compound and a hydrophobized powder is excellent in ultraviolet protection effect, effect of suppressing greasiness caused by sebum, and stability over time, and moreover has little stickiness after application, and completed the present invention.

[0006] That is, the present invention provides an oil-in-water type emulsified cosmetic containing the following components (A), (B), (C) and (D), and having a content mass ratio [(B) / (A)] of component (B) to component (A) of 0.2 or more and 10 or less. (A) An ultraviolet absorber having a siloxane bond in the molecule (B) A highly polymerized silicone oil (C) A poly(meth)acrylamide compound (D) Hydrophobically treated powder

Effects of the Invention

[0007] The oil-in-water type emulsified cosmetic of the present invention is excellent in ultraviolet protection effect, effect of suppressing shininess due to sebum, and stability over time. In addition, it has less stickiness after application.

Embodiments for Carrying Out the Invention

[0008] <Component (A)> The oil-in-water type emulsified cosmetic of the present invention contains (A) an ultraviolet absorber having a siloxane bond in the molecule. Here, although the highly polymerized silicone oil (B) may separate in the oil phase and reduce the ultraviolet protection effect, in the present invention, by containing component (A) together with component (B) so that the content mass ratio [(B) / (A)] is 0.2 or more and 10 or less, an excellent ultraviolet protection effect can be obtained despite containing component (B) as described above.

[0009] The siloxane bond means a Si—O—Si bond, and examples of the ultraviolet absorber having a siloxane bond in the molecule include silicone-based ultraviolet absorbers and ultraviolet absorbers having a trisiloxane residue in the molecule. As the silicone-based ultraviolet absorber, a compound in which a part or all of the methyl groups of dimethicone are substituted with diethyl 4-propynyloxybenzalmalonate is preferable, and examples thereof include polysilicone-15 (dimethicodiethylbenzalmalonate). As ultraviolet absorbers having a trisiloxane residue in the molecule, ultraviolet absorbers having a trisiloxane residue and a benzotriazole ring or cinnamate ester skeleton in the molecule are preferred, for example, drometrizole trisiloxane and methylbis(trimethylsiloxy)silylisopentyl trimethoxycinnamate. Among these UV absorbers that have siloxane bonds in their molecules, polysilicone-15 and drometrizole trisiloxane are preferred from the viewpoint of UV protection effect and effect of suppressing shine caused by sebum.

[0010] Furthermore, ultraviolet absorbers containing siloxane bonds in their molecules can be broadly classified into those that are solid at 1 atmosphere and 25°C, and those that are liquid at 1 atmosphere and 25°C. For example, polysilicone-15, mentioned above, is liquid at 1 atmosphere and 25°C. Also, drometrizole trisiloxane, mentioned above, is solid at 1 atmosphere and 25°C.

[0011] Furthermore, UV absorbers containing siloxane bonds within their molecules may be used individually or in combination of two or more types.

[0012] The amount of UV absorber having a siloxane bond in the molecule is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 0.7% by mass or more, even more preferably 1% by mass or more, and particularly preferably 1.3% by mass or more in the oil-in-water emulsion cosmetic of the present invention, from the viewpoint of UV protection effect and effect of suppressing shine caused by sebum. Furthermore, from the viewpoint of reducing stickiness after application, the amount is preferably 15% by mass or less, more preferably 10% by mass or less, even more preferably 5% by mass or less, and particularly preferably 4% by mass or less in the oil-in-water emulsion cosmetic of the present invention. Specifically, in the oil-in-water emulsion cosmetic of the present invention, 0.1% by mass or more and 15% by mass or less is preferred, 0.5% by mass or more and 10% by mass or less is more preferred, 0.7% by mass or more and 5% by mass or less is even more preferred, 1% by mass or more and 4% by mass or less is even more preferred, and 1.3% by mass or more and 4% by mass or less is particularly preferred. When the content of component (A) is 0.7% by mass or more, 1% by mass or more, or 1.3% by mass or more, the ultraviolet protection effect and the effect of suppressing greasiness caused by sebum are particularly improved. Further, when the content of component (A) is 5% by mass or less or 4% by mass or less, the stickiness after application is particularly improved.

[0013] <Component (B)> The water-in-oil emulsion cosmetic of the present invention contains (B) a highly polymerized silicone oil. In the present invention, the highly polymerized silicone oil of component (B) is a linear highly polymerized polymer having a segment composed of repeating -SiO- as a main chain, and includes those in which all side chains and terminals of polysiloxane are methyl groups, and those in which a part of the side chain is a phenyl group or hydrogen. Further, the highly polymerized silicone oil of component (B) is a concept excluding component (A). By containing component (B), greasiness caused by sebum can be suppressed. As the highly polymerized silicone oil, a linear highly polymerized silicone oil which is a non-volatile liquid at 25°C under 1 atm is preferable.

[0014] The kinematic viscosity of the highly polymerized silicone oil at 25°C is preferably 8 mm 2 / s or more, more preferably 10 mm 2 / s or more, still more preferably 15 mm 2 / s or more, still more preferably 20 mm 2 / s or more, particularly preferably 50 mm 2 / s or more, and from the viewpoint of reducing stickiness after application, etc., preferably 20000 mm 2 / s or less, more preferably 10000 mm 2 / s or less, still more preferably 7500 mm 2 / s or less, still more preferably 3000 mm 2 / s or less, still more preferably 1000 mm 2 / s or less, particularly preferably 300 mm 2 / s or less. As a specific range, 8 mm 2 / s or more and 10000 mm 2 / s or less is preferable, and 10 mm 2 / s or more 7500mm 2 / s or less is more preferable, 15mm 2 / s or more 3000mm 2 / s or less is even more preferable, 20mm 2 / s or more 1000mm 2 / s or less is even more preferable, 50mm 2 / s or more 300mm 2 / s or less is particularly preferred. The kinematic viscosity of high polymer silicone oil at 25°C is 3000 mm². 2 / s or less, 1000mm 2 / s or less or 300mm 2 When the temperature is set to less than / s, the reduced stickiness after application is particularly improved. The kinematic viscosity of high-polymer silicone oil at 25°C is calculated using a capillary viscometer. The time it takes for a certain volume of liquid to flow through the viscometer's capillary tube at 25°C and one atmosphere is measured, and this flow time is then used in conjunction with the viscometer constant to determine the kinematic viscosity. Capillary viscometers commonly used include those by Ubbelohde and Cannon-Fenske. <Method for calculating kinematic viscosity> Kinematic viscosity (mm 2 / s) = Outflow time (seconds) x viscometer constant Furthermore, if two or more types of high-polymer silicone oils are used, it is sufficient that the kinematic viscosity when mixed is within the above range.

[0015] Examples of highly polymerized silicone oils include dimethicone, methylphenylpolysiloxane, and methylhydrogenpolysiloxane. Among these, dimethicone is preferred from the viewpoint of usability and the effect of suppressing shine caused by sebum. Commercially available dimethicone products include KF-96A-10CS (kinematic viscosity at 25°C: 10 mm³). 2 / s), KF-96A-50CS (kinematic viscosity at 25℃: 50mm 2 / s), KF-96A-100CS (kinematic viscosity at 25℃: 100mm 2 / s), KF-96A-5000CS (Kinematic viscosity at 25℃: 5000mm 2 / s), KF-96A-10000CS (Kinematic viscosity at 25℃: 10000mm2 Examples include / s) (manufactured by Shin-Etsu Chemical Co., Ltd.). Examples of commercially available methylphenylpolysiloxane include DOWSIL FZ-209 (manufactured by Toray Dow Corning).

[0016] Furthermore, high-polymer silicone oils may be used individually or in combination of two or more types.

[0017] From the viewpoint of the effect of suppressing shine caused by sebum, the content of highly polymerized silicone oil in the oil-in-water emulsion cosmetic composition of the present invention is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.3% by mass or more, even more preferably 1.3% by mass or more, and particularly preferably 1.5% by mass or more. Furthermore, from the viewpoint of UV protection effect and reduced stickiness after application, the content of highly polymerized silicone oil in the oil-in-water emulsion cosmetic composition of the present invention is preferably 15% by mass or less, more preferably 10% by mass or less, even more preferably 7% by mass or less, and particularly preferably 5% by mass or less. Specifically, in the oil-in-water emulsion cosmetic composition of the present invention, 0.1% by mass or more and 15% by mass or less is preferred, 0.3% by mass or more and 10% by mass or less is more preferred, 1.3% by mass or more and 7% by mass or less is even more preferred, and 1.5% by mass or more and 5% by mass or less is particularly preferred. When the content of ingredient (B) is 1.3% by mass or 1.5% by mass or more, the effect of suppressing shine caused by sebum is particularly improved. Furthermore, when the content of ingredient (B) is 7% by mass or less or 5% by mass or less, the UV protection effect and the reduced stickiness after application are particularly improved.

[0018] Furthermore, the mass ratio of component (B) to component (A) [(B) / (A)] is between 0.2 and 10. The mass ratio of (B) / (A) is preferably 0.4 or higher, more preferably 0.6 or higher, from the viewpoint of suppressing shine caused by sebum and reducing stickiness after application. Furthermore, from the viewpoint of UV protection, suppressing shine caused by sebum, and reducing stickiness after application, it is preferably 5 or lower, more preferably 3 or lower, and particularly preferably 2 or lower. Specifically, a range of 0.4 to 5 is preferred, 0.4 to 3 is more preferred, 0.6 to 3 is even more preferred, and 0.6 to 2 is particularly preferred. When the mass ratio of the content [(B) / (A)] is set to 0.6 or more and 3 or 0.6 or more and 2 or less, the product exhibits particularly excellent UV protection, an effect of suppressing shine caused by sebum, and a low stickiness after application.

[0019] <Component (C)> The oil-in-water emulsion cosmetic composition of the present invention contains (C) a poly(meth)acrylamide compound. (Meth)acrylamide is a general term for acrylamide and methacrylamide. A poly(meth)acrylamide compound can be any polymer having repeating units derived from (meth)acrylamide or its derivatives. For example, it is a concept that includes polyacrylamide, polymethacrylamide, poly(acrylamide derivatives), poly(methacrylamide derivatives), copolymers of (meth)acrylamide and (meth)acrylamide derivatives, and copolymers of one or more monomers selected from acrylamide, methacrylamide, acrylamide derivatives and methacrylamide derivatives with other monomers (e.g., (meth)acrylic acid, (meth)acrylate salts, (meth)acrylates, vinylpyrrolidone, etc.). Furthermore, water-soluble poly(meth)acrylamide compounds are preferred. Here, N-substituted (meth)acrylamides are preferred as (meth)acrylamide derivatives. For example, (meth)acryloyldimethyltaurine or its salts are used. Salts of (meth)acryloyldimethyltaurine include alkali metal salts such as sodium salts, potassium salts, and lithium salts; salts with group 2 elements such as calcium salts and magnesium salts; and ammonium salts.

[0020] As for poly(meth)acrylamide compounds, polymers having one or more repeating units selected from repeating units derived from (meth)acrylamide and repeating units derived from (meth)acryloyldimethyltaurine or its salts are preferred from the viewpoint of low stickiness after application and long-term stability. Examples include poly(meth)acrylamide, copolymers of (meth)acrylate and (meth)acryloyldimethyltaurine salt, copolymers of (meth)acrylate and (meth)acryloyldimethyltaurine salt, copolymers of (meth)acrylamide and (meth)acrylate, copolymers of (meth)acrylic acid, (meth)acrylamide, (meth)acrylate and (meth)acryloyldimethyltaurine salt, and copolymers of (meth)acryloyldimethyltaurine salt and vinylpyrrolidone. Among these, poly(meth)acrylamide, a copolymer of (meth)acrylate hydroxyethyl and (meth)acryloyldimethyltaurate, a copolymer of (meth)acrylate and (meth)acryloyldimethyltaurate, and a copolymer of (meth)acryloyldimethyltaurate and vinylpyrrolidone are preferred from the viewpoint of less stickiness after application and long-term stability.

[0021] A commercially available polyacrylamide product is Sepigel 305 (a mixture of polyacrylamide, hydrogenated polyisobutene, laureth-7, and water). Commercially available copolymers of hydroxyethyl acrylate and acryloyldimethyl taurate include SEPINOV EMT 10 (a mixture of (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, sorbitan isostearate, and polysorbate 60), SIMULGEL NS (a mixture of (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, squalane, polysorbate 60, and water), SIMULGEL FL (a mixture of (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, isohexadecane, polysorbate 60, and water), and SEPIPLUS S (a mixture of (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, polyisobutene, PEG-7 trimethylolpropane coconut oil alkyl ether, and water). A commercially available copolymer of acrylate salts and acryloyldimethyltaurate salts is SIMULGEL EG (a mixture of (sodium acrylate / sodium acryloyldimethyltaurate) copolymer, isohexadecane, polysorbate 80, sorbitan oleate, and water). A commercially available copolymer of acrylamide and acrylate salt is SEPIPLUS 265 (a mixture of (acrylamide / ammonium acrylate) copolymer, polyisobutene, polysorbate 20, and water). A commercially available copolymer of acrylic acid, acrylamide, acrylate salt, and acryloyldimethyltaurate salt is SEPIPLUS 400 (a mixture of polyacrylate-13, polyisobutene, polysorbate 20, and water). A commercially available copolymer of acryloyldimethyltaurate salt and vinylpyrrolidone is Aristoflex AVC ((acryloyldimethyltaurate ammonium / VP) copolymer).

[0022] Furthermore, poly(meth)acrylamide compounds may be used individually or in combination of two or more types.

[0023] From the viewpoint of emulsification stability, the content of the poly(meth)acrylamide compound in the oil-in-water emulsion cosmetic of the present invention is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, and particularly preferably 0.3% by mass or more. From the viewpoint of usability, the content is preferably 7.5% by mass or less, more preferably 5% by mass or less, even more preferably 2.5% by mass or less, and particularly preferably 2% by mass or less. Specifically, in the oil-in-water emulsion cosmetic of the present invention, 0.01% by mass or more and 7.5% by mass or less is preferred, 0.05% by mass or more and 5% by mass or less is more preferred, 0.1% by mass or more and 2.5% by mass or less is even more preferred, and 0.3% by mass or more and 2% by mass or less is particularly preferred.

[0024] Furthermore, the mass ratio of component (A) to component (C) [(A) / (C)] is preferably 0.1 or higher, more preferably 0.5 or higher, even more preferably 1 or higher, and particularly preferably 2 or higher, from the viewpoint of UV protection effect and effect of suppressing shine caused by sebum, and from the viewpoint of reducing stickiness after application, it is preferably 20 or lower, more preferably 15 or lower, even more preferably 10 or lower, and particularly preferably 5 or lower. Specifically, a range of 0.1 to 20 is preferred, 0.5 to 15 is more preferred, 1 to 10 is even more preferred, and 2 to 5 is particularly preferred.

[0025] Furthermore, the mass ratio of component (B) to component (C) [(B) / (C)] is preferably 0.1 or higher, more preferably 1 or higher, even more preferably 1.5 or higher, and particularly preferably 2 or higher, from the viewpoint of suppressing shine caused by sebum, and from the viewpoint of UV protection effect and reduced stickiness after application, it is preferably 20 or lower, more preferably 15 or lower, even more preferably 10 or lower, and particularly preferably 7.5 or lower. Specifically, a range of 0.1 to 20 is preferred, 1 to 15 is more preferred, 1.5 to 10 is even more preferred, and 2 to 7.5 is particularly preferred.

[0026] <Ingredient (D)> The oil-in-water emulsion cosmetic of the present invention contains (D) a hydrophobized powder. Hydrophobized powders are broadly classified into (D1) hydrophobized ultraviolet scattering agents and (D2) hydrophobized powders other than hydrophobized ultraviolet scattering agents. One of these may be used alone or two or more may be used in combination. The shape of the hydrophobized powder is not particularly limited and examples include spherical, plate-shaped, rod-shaped, spindle-shaped, needle-shaped, and irregular shapes.

[0027] (Component (D1)) Hydrophobized fine-particle metal oxides are preferred as the hydrophobized ultraviolet scattering agent. From the viewpoint of availability, one or more fine metal oxides selected from zinc oxide, titanium oxide, cerium oxide, iron oxide, and chromium oxide are preferred as the fine metal oxides used in hydrophobically treated fine metal oxides. Among these fine metal oxides, one or more fine metal oxides selected from zinc oxide, titanium oxide, and cerium oxide are preferred from the viewpoint of ultraviolet protection effect, and one or more fine metal oxides selected from zinc oxide and titanium oxide are more preferred. These fine metal oxides can contain trace elements with a valence of +2 or higher, and metals such as iron, zirconium, calcium, manganese, magnesium, and yttrium can be included in the fine metal oxides, either individually or in combination of two or more.

[0028] Furthermore, the average primary particle size d of the hydrophobized ultraviolet scattering agent A From the viewpoint of UV protection effect, the average primary particle diameter d is preferably 1 nm or more, more preferably 5 nm or more, even more preferably 7 nm or more, and also preferably 100 nm or less, more preferably 80 nm or less, and even more preferably 50 nm or less. A The specific range is preferably 1 nm to 100 nm, more preferably 5 nm to 80 nm, and even more preferably 7 nm to 50 nm. The average primary particle diameter d in this specification AThis can be determined from images observed using a transmission electron microscope (TEM). Specifically, it is determined by observing the material with a TEM at a magnification of 50,000x, measuring the maximum minor diameter of 300 primary particles in the observed image, and calculating the average number of these measurements. Here, the maximum minor diameter refers to the longest minor diameter among the minor diameters perpendicular to the major diameter, if the hydrophobic treated ultraviolet scattering agent has a shape other than a plate. If the hydrophobic treated ultraviolet scattering agent is plate-shaped, it is determined by measuring the thickness of 300 primary particles in the observed image observed under the same conditions as above and calculating the average number of these measurements.

[0029] Examples of hydrophobic treatments include methylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, methylcyclopolysiloxane, dodecamethylcyclohexasiloxane, tetradecamethylhexasiloxane, dimethylsiloxane / methyl(polyoxyethylene)siloxane / methyl(polyoxypropylene)siloxane copolymer, dimethylsiloxane / methyl(polyoxyethylene)siloxane copolymer, dimethylsiloxane / methyl(polyoxypropylene)siloxane copolymer, dimethylsiloxane / methylcetyloxysiloxane copolymer, and dimethylsiloxane. Examples include silicone treatment such as roxane / methyl stearoxane copolymer and alkyl acrylate / dimethicone copolymer; alkylalkoxysilane treatment such as octyltriethoxysilane and octyltrimethoxysilane; fatty acid treatment such as stearic acid, aluminum stearate, isostearic acid, and aluminum isostearate; fluorine-containing compound treatment such as perfluoroalkyl phosphate ester, perfluoroalcohol, and perfluoroalkylalkoxysilane; amino acid treatment such as N-acyl glutamic acid; alkyl phosphate ester treatment; and inorganic compound treatment such as ASI treatment. One of these treatments may be performed, or two or more may be combined.

[0030] The amount of the above surface treatment agent used is preferably 1% by mass or more, more preferably 3% by mass or more, relative to the total mass of the hydrophobic ultraviolet scattering agent, from the viewpoint of emulsification stability, dispersion stability, etc., and also preferably 15% by mass or less, more preferably 10% by mass or less, relative to the total mass of the hydrophobic ultraviolet scattering agent, from the viewpoint of emulsification stability, dispersion stability, etc. Note that the above processing amount refers to the amount when the total of the fine metal oxide particles and the surface treatment agent is considered to be 100% by mass. Also, if the ultraviolet scattering agent is hydrophobic, the above average primary particle diameter d A The content and mass ratio in the cosmetic product, as well as the average primary particle size d including the surface treatment agent, are also important. A This refers to the content and the mass ratio of the content.

[0031] Commercially available hydrophobized titanium dioxide microparticles include the MT-100 series, JR series, and MPY series from Teika Corporation, the STR-100 series from Sakai Chemical Industry Co., Ltd., and the TTO55 series, TTO51 series, and MPT series from Ishihara Sangyo Co., Ltd. Commercially available hydrophobized zinc oxide microparticles include the MZ-500 series and MZ-300 series from Teika Corporation, and the FINEX-50 series, FINEX-30 series, and FINEX-25 series from Sakai Chemical Industry Co., Ltd.

[0032] (Component (D2)) Examples of hydrophobized powders other than hydrophobized ultraviolet scattering agents include organic powders, inorganic powders, or organic-inorganic composite powders that have been hydrophobized. Specifically, for organic powders, inorganic powders, and organic-inorganic composite powders, the average primary particle size d AMetal oxides exceeding 100 nm; pigments such as Red No. 104, Red No. 102, Red No. 226, Red No. 201, Red No. 202, Yellow No. 4, Black No. 401, and Ultramarine; lake pigments such as Blue No. 1 Aluminum Lake, Yellow No. 4 Aluminum Lake, Yellow No. 5 Aluminum Lake, and Yellow No. 203 Barium Lake; polymers such as nylon powder, silk powder, urethane powder, Teflon® powder, silicone powder, polymethyl methacrylate powder, cellulose powder, and polyethylene powder; extender pigments such as talc, mica, sericite, kaolin, and plate-like barium sulfate; pearl pigments such as titanium mica, iron oxide-coated titanium mica, carmine-coated titanium mica, Prussian blue-coated titanium mica, and black iron oxide-coated titanium mica; metal salts such as barium sulfate, calcium carbonate, magnesium carbonate, aluminum silicate, and magnesium silicate; inorganic powders such as silica, alumina, and iron oxide, as well as bentonite, smectite, boron nitride, and lauroyl lysine. Furthermore, the hydrophobic treatment for the powder of component (D2) is the same as the hydrophobic treatment for the ultraviolet scattering agent of component (D1).

[0033] Average primary particle diameter d A From the viewpoint of availability, one or more metal oxides selected from zinc oxide, titanium oxide, cerium oxide, iron oxide, and chromium oxide are preferred as metal oxides with a wavelength exceeding 100 nm. The average primary particle size d of the metal oxide used in component (D2) A The wavelength is greater than 100 nm, but is preferably 150 to 500 nm, and more preferably 200 to 400 nm. The average primary particle size d of the metal oxide used in component (D2) A The average primary particle size d of the hydrophobized ultraviolet scattering agent is A You can measure it in the same way.

[0034] Furthermore, the hydrophobic treated powder may be used individually or in combination of two or more types.

[0035] From the viewpoint of UV protection effect and other factors, the content of hydrophobized powder in the oil-in-water emulsion cosmetic of the present invention is preferably 1% by mass or more, more preferably 2% by mass or more, even more preferably 3% by mass or more, and particularly preferably 5% by mass or more. Furthermore, from the viewpoint of less stickiness after application, less squeaky feeling during application, and stability over time, the content of hydrophobized powder in the oil-in-water emulsion cosmetic of the present invention is preferably 35% by mass or less, more preferably 30% by mass or less, even more preferably 20% by mass or less, and particularly preferably 17% by mass or less. Specifically, in the oil-in-water emulsion cosmetic of the present invention, 1% by mass or more and 35% by mass or less is preferred, 2% by mass or more and 30% by mass or less is more preferred, 3% by mass or more and 20% by mass or less is even more preferred, and 5% by mass or more and 17% by mass or less is particularly preferred. When the content of hydrophobized powder is 20% by mass or less, or 17% by mass or less, the stickiness after application and the squeaky feeling during application are particularly improved.

[0036] When a hydrophobically treated UV scattering agent is used as a hydrophobically treated powder, the content of the hydrophobically treated UV scattering agent in the oil-in-water emulsion cosmetic of the present invention is preferably 1% by mass or more, more preferably 2% by mass or more, and even more preferably 4% by mass or more, from the viewpoint of UV protection effect, etc. Furthermore, from the viewpoint of less stickiness after application, less squeaky feeling during application, and stability over time, the content is preferably 25% by mass or less, more preferably 20% by mass or less, and even more preferably 15% by mass or less, in the oil-in-water emulsion cosmetic of the present invention. Specifically, the range is preferably 1% by mass or more and 25% by mass or less, more preferably 2% by mass or more and 20% by mass or less, and even more preferably 4% by mass or more and 15% by mass or less, in the oil-in-water emulsion cosmetic of the present invention. Furthermore, the content of hydrophobized powders other than the hydrophobized ultraviolet scattering agent is preferably 0% by mass or more, more preferably 0.5% by mass or more, in the oil-in-water emulsion cosmetic composition of the present invention, and from the viewpoint of minimizing the feeling of squeaking when applied, it is preferably 12% by mass or less, more preferably 8% by mass or less, in the oil-in-water emulsion cosmetic composition of the present invention. Specifically, the range is preferably 0% by mass or more and 12% by mass or less, and more preferably 0.5% by mass or more and 8% by mass or less, in the oil-in-water emulsion cosmetic composition of the present invention.

[0037] Furthermore, the mass ratio of component (D) to component (B) [(D) / (B)] is preferably 0.1 or higher, more preferably 0.5 or higher, even more preferably 1 or higher, and particularly preferably 2 or higher, from the viewpoint of UV protection effect and reduced stickiness after application. Also, from the viewpoint of reduced squeaky feeling during application and the effect of suppressing shine caused by sebum, it is preferably 20 or lower, more preferably 15 or lower, even more preferably 13 or lower, and particularly preferably 10 or lower. Specifically, a range of 0.1 to 20 is preferred, 0.5 to 15 is more preferred, 1 to 13 is even more preferred, and 2 to 10 is particularly preferred.

[0038] <Ingredient (E)> (E) From the viewpoint of usability, the water content in the oil-in-water emulsion cosmetic of the present invention is preferably 15% by mass or more, more preferably 20% by mass or more, even more preferably 25% by mass or more, and particularly preferably 30% by mass or more. Furthermore, from the viewpoint of stability over time, the water content in the oil-in-water emulsion cosmetic of the present invention is preferably 80% by mass or less, more preferably 70% by mass or less, even more preferably 65% ​​by mass or less, and particularly preferably 60% by mass or less. Specifically, in the oil-in-water emulsion cosmetic of the present invention, 15% by mass or more and 80% by mass or less is preferred, 20% by mass or more and 70% by mass or less is more preferred, 25% by mass or more and 65% by mass or less is even more preferred, and 30% by mass or more and 60% by mass or less is particularly preferred.

[0039] As an oil-in-water emulsion cosmetic of the present invention, from the viewpoint of ultraviolet protection effect, it is preferable that in addition to the above components, it further contains one or more selected from (F) an ultraviolet absorber other than component (A), (G) a liquid oil (the liquid oil of component (G) is a concept that excludes the organic ultraviolet absorber that is liquid at 1 atmosphere and 25°C and component (B), and hereinafter the liquid oil of component (G) will also be called "other liquid oil"), and (H) a surfactant.

[0040] <Ingredients (F)> As an ultraviolet absorber other than component (A), an organic ultraviolet absorber other than component (A) is preferred. Examples of organic UV absorbers other than component (A) include benzoic acid-based UV absorbers, anthranilic acid-based UV absorbers, salicylic acid-based UV absorbers, cinnamic acid-based UV absorbers, benzophenone-based UV absorbers, and triazine-based UV absorbers. Among these, one or more selected from benzoic acid-based UV absorbers and triazine-based UV absorbers are preferred from the viewpoint of UV protection effect, low stickiness after application, and long-term stability. Furthermore, oil-soluble organic UV absorbers are preferred as organic UV absorbers.

[0041] Examples of benzoic acid-based UV absorbers include para-aminobenzoic acid (PABA), glyceryl PABA, ethyl dihydroxypropyl PABA, N-ethoxylate PABA ethyl ester, N-dimethyl PABA ethyl ester, N-dimethyl PABA butyl ester, N-dimethyl PABA amyl ester, octyldimethyl PABA, and diethylaminohydroxybenzoyl hexyl benzoate. Examples of anthranilic acid-based UV absorbers include homomenthyl-N-acetylanthranilate. Examples of salicylic acid-based UV absorbers include amyl salicylate, menthyl salicylate, homomenthyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, and p-isopropanolphenyl salicylate.

[0042] Examples of cinnamic acid-based UV absorbers include octyl cinnamate, ethyl-4-isopropyl cinnamate, ethyl-2,4-diisopropyl cinnamate, methyl-2,4-diisopropyl cinnamate, propyl-p-methoxy cinnamate, isopropyl-p-methoxy cinnamate, isoamyl-p-methoxy cinnamate, 2-ethylhexyl-p-methoxy cinnamate, 2-ethoxyethyl-p-methoxy cinnamate, cyclohexyl-p-methoxy cinnamate, ethyl-α-cyano-β-phenyl cinnamate, 2-ethylhexyl-α-cyano-β-phenyl cinnamate, and glyceryl mono-2-ethylhexanoyl diparamethoxy cinnamate. Examples of benzophenone-based UV absorbers include 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone, 4-phenylbenzophenone, 2-ethylhexyl-4'-phenylbenzophenone-2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, and 4-hydroxy-3-carboxybenzophenone. Examples of triazine-based UV absorbers include 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine, dioctylbutamide triazone, and 2,4-bis-[{4-(2-ethylhexyloxy)-2-hydroxy}phenyl]-6-(4-methoxyphenyl)-1,3,5-triazine. Other organic ultraviolet absorbers include 3-(4'-methylbenzylidene)-dl-camphor, 3-benzylidene-dl-camphor, ethyl urocanate, 2-phenyl-5-methylbenzoxazole, 2,2'-hydroxy-5-methylphenylbenzotriazole, 2-(2'-hydroxy-5-t-octylphenyl)benzotriazole, dibenzarazine, dianisioylmethane, 4-methoxy-4'-t-butyldibenzoylmethane, 5-(3,3-dimethyl-2-norvonylidene)-3-pentan-2-one, benzene-bis-1,3-diketone derivatives described in Japanese Patent Publication No. 2-212579, and benzoylpinacolin derivatives described in Japanese Patent Publication No. 3-220153.

[0043] Furthermore, organic UV absorbers other than component (A) can be broadly classified into organic UV absorbers that are solid at 1 atmosphere and 25°C, and organic UV absorbers that are liquid at 1 atmosphere and 25°C. Among these, organic UV absorbers that are solid at 1 atmosphere and 25°C are preferred from the viewpoint of UV protection effect, less stickiness after application, and long-term stability. For example, diethylamino hydroxybenzoyl hexyl benzoate, 2,4-bis-[{4-(2-ethylhexyloxy)-2-hydroxy}-phenyl]-6-(4-methoxyphenyl)-1,3,5-triazine, and 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine, etc., listed above are organic UV absorbers that are solid at 1 atmosphere and 25°C. Furthermore, isopropyl-p-methoxycinnamate, 2-ethylhexyl-p-methoxycinnamate, and 2-ethoxyethyl-p-methoxycinnamate, mentioned above, are liquid organic ultraviolet absorbers at 1 atmosphere and 25°C.

[0044] Furthermore, UV absorbers other than component (A) may be used individually or in combination of two or more types.

[0045] The content of UV absorbers other than component (A) is preferably 0% by mass or more, more preferably 0.5% by mass or more, and even more preferably 2% by mass or more in the oil-in-water emulsion cosmetic of the present invention, from the viewpoint of UV protection effect, and from the viewpoint of usability (especially the lack of stickiness after application) and stability over time, it is preferably 15% by mass or less, more preferably 10% by mass or less, and even more preferably 7.5% by mass or less in the oil-in-water emulsion cosmetic of the present invention. Specifically, the range is preferably 0% by mass or more and 15% by mass or less in the oil-in-water emulsion cosmetic of the present invention, more preferably 0.5% by mass or more and 10% by mass or less, and even more preferably 2% by mass or more and 7.5% by mass or less.

[0046] <Ingredients (G)> Other liquid oils refer to oils that are liquid at 1 atmosphere and 25°C, excluding organic ultraviolet absorbers and component (B) that are liquid at 1 atmosphere and 25°C, and may be either volatile or non-volatile oils. They may also be used individually or in combination of two or more. Volatile oils are oils that exhibit volatility at 25°C, while non-volatile oils are oils that do not exhibit volatility at 25°C.

[0047] Examples of volatile oils include light isoparaffins, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, dodecamethylcyclohexasiloxane, methyl trimethicone, decamethyltetrasiloxane, ethyl trisiloxane, and volatile methylpolysiloxane. Commercially available light isoparaffins include Isopar H (manufactured by Esso Chemicals), Isododecane (manufactured by Bayer), Isohexadecane (manufactured by Unikema), IP Solvent 1620MU, IP Solvent 2028MU, and IP Solvent 2835 (all manufactured by Idemitsu Kosan Co., Ltd.). Commercially available decamethylcyclopentasiloxanes include TFS405 (manufactured by Momentive Performance Materials Japan LLC), SH245, DC345 (manufactured by Toray Dow Corning), and KF-995 (manufactured by Shin-Etsu Chemical Co., Ltd.). Commercially available methyltrimethicones include Silicone TMF-1.5 (manufactured by Shin-Etsu Chemical Co., Ltd.). Commercially available decamethyltetrasiloxanes include KF-96L-1.5CS (manufactured by Shin-Etsu Chemical Co., Ltd.). Examples of commercially available ethyltrisiloxane include SILSOFTETS (manufactured by Momentive Performance Materials Japan LLC). Examples of commercially available volatile methylpolysiloxane include KF-96L-2CS (manufactured by Shin-Etsu Chemical Co., Ltd.).

[0048] Examples of non-volatile oils include non-volatile hydrocarbon oils such as light liquid paraffin, liquid paraffin, heavy liquid isoparaffin, and squalane; non-volatile silicone oils such as non-volatile methylpolysiloxane and non-volatile methylphenylpolysiloxane; and non-volatile ester oils. Examples of non-volatile ester oils include non-volatile fatty acid ester oils such as cetyl 2-ethylhexanoate, isononyl isononanoate, isotridecyl isononanoate, isopropyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-ethylhexyl stearate, and stearyl stearate; diisopropyl sebacate; and alkyl (C12-15) benzoate. In addition, fatty acid triglycerides such as caprylic / capric triglyceride and 2-ethylhexanoate glyceride; esters of fatty acids and neopentyl glycol such as neopentyl glycol dicaprate and neopentyl glycol diethylhexanoate; and other polyhydric alcohol fatty acid ester oils may also be used as non-volatile fatty acid ester oils. Among non-volatile oils, non-volatile hydrocarbon oils and non-volatile ester oils are preferred.

[0049] Examples of commercially available liquid paraffin include Pearlream 4 (manufactured by NOF Corporation). Examples of commercially available non-volatile methylpolysiloxane include KF-96A-6CS (manufactured by Shin-Etsu Chemical Co., Ltd.). Examples of commercially available isopropyl palmitate include Excepearl IPP (manufactured by Kao Corporation). Examples of commercially available alkyl benzoate (C12-15) include FINSOLV TN (manufactured by Innospec Active Chemicals). Examples of commercially available neopentyl glycol dicaprate include Estemol N-01 (manufactured by Nisshin Oillio Group).

[0050] From the viewpoint of stability over time, the content of other liquid oils in the oil-in-water emulsion cosmetic of the present invention is preferably 0% by mass or more, more preferably 1% by mass or more, and even more preferably 5% by mass or more. From the viewpoint of usability, the content is preferably 25% by mass or less, more preferably 20% by mass or less, and even more preferably 15% by mass or less. Specifically, in the oil-in-water emulsion cosmetic of the present invention, 0% by mass or more and 25% by mass or less is preferred, 1% by mass or more and 20% by mass or less is more preferred, and 5% by mass or more and 15% by mass or less is even more preferred.

[0051] The oil-in-water emulsion cosmetic of the present invention may or may not contain various polar oils, but the total content of polar oils that are liquid at 1 atmosphere and 25°C is preferably 0% to 40% by mass, more preferably 0% to 30% by mass, and even more preferably 0% to 20% by mass, from the viewpoint of UV protection effect and the like. For example, the aforementioned 2-ethylhexyl-p-methoxycinnamate is a polar oil that is liquid at 1 atmosphere and 25°C, and the content of 2-ethylhexyl-p-methoxycinnamate is preferably 0% to 5% by mass, more preferably 0% to 3% by mass, and even more preferably 0% to 2% by mass, from the viewpoint of UV protection effect and the like.

[0052] <Component (H)> Any known surfactants such as anionic surfactants, cationic surfactants, nonionic surfactants, and amphoteric surfactants may be used, but amphoteric surfactants (e.g., lecithin, hydrogenated lecithin, lysolecithin, etc.) and nonionic surfactants are preferred. Examples of nonionic surfactants include polyhydric alcohol fatty acid ester type surfactants, polyoxyethylene fatty acid ester type surfactants, polyether-modified silicone type surfactants, polyoxyethylene sorbitan fatty acid ester type surfactants (e.g., polysorbate 20, polysorbate 60, polysorbate 65, polysorbate 80), polyoxyethylene sorbitol fatty acid ester type surfactants, and polyoxyethylene alkyl ether type surfactants (e.g., laureth-7). Examples of polyhydric alcohol fatty acid ester type surfactants include glycerin fatty acid ester type surfactants, sorbitan fatty acid ester type surfactants (e.g., sorbitan monoisostearate, sorbitan monooleate, etc.), diglycerin fatty acid ester type surfactants, polyglycerin fatty acid ester type surfactants, and propylene glycol fatty acid ester type surfactants.

[0053] Furthermore, surfactants may be used individually or in combination of two or more types.

[0054] From the viewpoint of stability over time, the surfactant content in the oil-in-water emulsion cosmetic of the present invention is preferably 0% by mass or more, more preferably 0.1% by mass or more, and even more preferably 0.2% by mass or more. Furthermore, from the viewpoint of stability over time and usability, the surfactant content in the oil-in-water emulsion cosmetic of the present invention is preferably 15% by mass or less, more preferably 10% by mass or less, and even more preferably 5% by mass or less. Specifically, in the oil-in-water emulsion cosmetic of the present invention, 0% by mass or more and 15% by mass or less is preferred, 0.1% by mass or more and 10% by mass or less is more preferred, and 0.2% by mass or more and 5% by mass or less is even more preferred.

[0055] In addition to the above components, the oil-in-water emulsion cosmetic composition of the present invention may also contain film-forming agents such as (meth)acrylic silicone resins; higher alcohols; lower alcohols such as ethanol and propanol; polyhydric alcohols such as ethylene glycol, propylene glycol, 1,3-butylene glycol, glycerin, diglycerin, and polyglycerin; powders other than component (D) (for example, organic powders, inorganic powders, and organic-inorganic composite powders that are hydrophobized in component (D2)); waxes; water-soluble polymers other than component (C); viscosity modifiers; chelating agents; pH adjusters; fragrances; preservatives; conditioning agents; wetting agents; moisturizers; cooling agents, etc. Note that one of these may be used alone or two or more may be used in combination.

[0056] The dosage forms of the oil-in-water emulsion cosmetic composition of the present invention include non-solid forms such as liquid, emulsion, cream, paste, and gel, with liquid, emulsion, and cream forms being preferred. The oil-in-water emulsion cosmetic composition of the present invention can be prepared, for example, as a lotion, emulsion, serum, cream, or primer. Furthermore, because the oil-in-water emulsion cosmetic composition of the present invention has excellent UV protection properties, it is particularly suitable for use as a sunscreen cosmetic. The method of use is not particularly limited, but it is preferable to apply it by hand or with an application tool. Furthermore, the oil-in-water emulsion cosmetic composition of the present invention is suitable for use as a skin cosmetic, more suitable for application to skin excluding the scalp, and even more suitable for application to one or more areas selected from the face, body, and hands and feet. The oil-in-water emulsion cosmetic composition of the present invention can be manufactured according to conventional methods. Furthermore, the oil-in-water emulsion cosmetic composition of the present invention exhibits excellent UV protection and sebum-reducing effects, as well as excellent long-term stability, with minimal viscosity reduction over time and less dripping after storage. It also leaves less stickiness after application. Although the reason why such excellent UV protection and sebum-reducing effects are obtained is not entirely clear, the inventors speculate that the effect of reducing sebum-reducing shine is improved by including component (B), and furthermore, by including component (A) in such a mass ratio [(B) / (A)] of 0.2 to 10, the reduction in UV protection that tends to occur when component (B) is included is suppressed, resulting in excellent UV protection.

[0057] With regard to the embodiments described above, the present invention further discloses the following oil-in-water emulsion cosmetics, etc. <1> An oil-in-water emulsion cosmetic containing the following ingredients (A), (B), (C), and (D), wherein the mass ratio of ingredient (B) to ingredient (A) [(B) / (A)] is 0.2 or more and 10 or less. (A) UV absorbers having siloxane bonds in their molecule (B) High polymer silicone oil (C) Poly(meth)acrylamide compound (D) Hydrophobized powder

[0058] <2> Component (A) is preferably one or more UV absorbers selected from silicone-based UV absorbers and UV absorbers having trisiloxane residues in their molecule, more preferably one or more UV absorbers selected from compounds in which some or all of the methyl groups of dimethicone are substituted with diethyl 4-propynyloxybenzalmalonate and UV absorbers having trisiloxane residues and a benzotriazole ring or cinnamate ester skeleton in their molecule, even more preferably one or more selected from polysilicone-15 (dimethicone diethylbenzalmalonate), drometrizole trisiloxane, and methylbis(trimethylsiloxy)silylisopentyl trimethoxycinnamate, and particularly preferably one or more selected from polysilicone-15 and drometrizole trisiloxane. <1> The oil-in-water emulsion cosmetic described above.

[0059] <3> The content of component (A) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 0.7% by mass or more, even more preferably 1% by mass or more, and particularly preferably 1.3% by mass or more in the oil-in-water emulsion cosmetic, and also preferably 15% by mass or less, more preferably 10% by mass or less, even more preferably 5% by mass or less, and particularly preferably 4% by mass or less in the oil-in-water emulsion cosmetic. <1> or <2> The oil-in-water emulsion cosmetic described above. <4> The content of component (A) in the oil-in-water emulsion cosmetic is preferably 0.1% to 15% by mass, more preferably 0.5% to 10% by mass, even more preferably 0.7% to 5% by mass, even more preferably 1% to 4% by mass, and particularly preferably 1.3% to 4% by mass. <1> or <2> The oil-in-water emulsion cosmetic described above.

[0060] <5> Component (B) is preferably a linear, highly polymerized silicone oil that is a non-volatile liquid at 1 atmosphere and 25°C. <1> ~ <4> An oil-in-water emulsion cosmetic as described in any of the following. <6> The kinematic viscosity of component (B) at 25°C is preferably 8 mm 2 / s or more, more preferably 10mm 2 / s or more, more preferably 15mm2 / s or more, more preferably 20mm 2 / s or more, particularly preferably 50mm 2 It is 20,000 mm or more. 2 / s or less, more preferably 10,000 mm 2 / s or less, more preferably 7500mm 2 / s or less, more preferably 3000mm 2 / s or less, more preferably 1000mm 2 / s or less, particularly preferably 300 mm 2 It is less than or equal to / s. <1> ~ <5> An oil-in-water emulsion cosmetic as described in any of the following. <7> The kinematic viscosity of component (B) at 25°C is preferably 8 mm 2 / s or more 10000mm 2 / s or less, more preferably 10mm 2 / s or more 7500mm 2 / s or less, more preferably 15 mm 2 / s or more 3000mm 2 / s or less, more preferably 20mm 2 / s or more 1000mm 2 / s or less, particularly preferably 50mm 2 / s or more 300mm 2 It is less than or equal to / s. <1> ~ <5> An oil-in-water emulsion cosmetic as described in any of the following.

[0061] <8> Component (B) is preferably one or more selected from dimethicone, methylphenylpolysiloxane, and methylhydrogenpolysiloxane, and more preferably dimethicone. <1> ~ <7> An oil-in-water emulsion cosmetic as described in any of the following.

[0062] <9> The content of component (B) in the oil-in-water emulsion cosmetic is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.3% by mass or more, even more preferably 1.3% by mass or more, and particularly preferably 1.5% by mass or more, and also preferably 15% by mass or less, more preferably 10% by mass or less, even more preferably 7% by mass or less, and particularly preferably 5% by mass or less. <1> ~ <8> An oil-in-water emulsion cosmetic as described in any of the following. <10> The content of component (B) in the oil-in-water emulsion cosmetic is preferably 0.1% by mass or more and 15% by mass or less, more preferably 0.3% by mass or more and 10% by mass or less, even more preferably 1.3% by mass or more and 7% by mass or less, and particularly preferably 1.5% by mass or more and 5% by mass or less. <1> ~ <8> An oil-in-water emulsion cosmetic as described in any of the following.

[0063] <11> The mass ratio of component (B) to component (A) [(B) / (A)] is preferably 0.4 or more, more preferably 0.6 or more, and also preferably 5 or less, more preferably 3 or less, and particularly preferably 2 or less. <1> ~ <10> An oil-in-water emulsion cosmetic as described in any of the following. <12> The mass ratio of component (B) to component (A) [(B) / (A)] is preferably 0.4 to 5, more preferably 0.4 to 3, even more preferably 0.6 to 3, and particularly preferably 0.6 to 2. <1> ~ <10> An oil-in-water emulsion cosmetic as described in any of the following.

[0064] <13> Component (C) is preferably a polymer having repeating units derived from (meth)acrylamide or its derivatives, more preferably polyacrylamide, polymethacrylamide, poly(acrylamide derivative), poly(methacrylamide derivative), copolymers of (meth)acrylamide and (meth)acrylamide derivatives, and one or more polymers selected from copolymers of one or more monomers selected from acrylamide, methacrylamide, acrylamide derivatives and methacrylamide derivatives and other monomers, even more preferably a polymer having repeating units selected from repeating units derived from (meth)acrylamide and repeating units derived from (meth)acryloyldimethyltaurine or its salts, and even more preferably poly(meth)acrylamide, (meth)acrylate hydroxyethyl One or more polymers selected from copolymers of tyl and (meth)acryloyldimethyltaurate, copolymers of (meth)acrylate and (meth)acryloyldimethyltaurate, copolymers of (meth)acrylamide and (meth)acrylate, copolymers of (meth)acrylic acid and (meth)acrylamide and (meth)acrylamide and (meth)acrylamide and (meth)acryloyldimethyltaurate, and copolymers of (meth)acryloyldimethyltaurate and vinylpyrrolidone, particularly preferably one or more polymers selected from poly(meth)acrylamide, copolymers of (meth)acrylate and (meth)acryloyldimethyltaurate, copolymers of (meth)acrylate and (meth)acryloyldimethyltaurate, and copolymers of (meth)acryloyldimethyltaurate and vinylpyrrolidone. <1> ~ <12> An oil-in-water emulsion cosmetic as described in any of the following.

[0065] <14> The content of component (C) is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, and particularly preferably 0.3% by mass or more in the oil-in-water emulsion cosmetic, and also preferably 7.5% by mass or less, more preferably 5% by mass or less, even more preferably 2.5% by mass or less, and particularly preferably 2% by mass or less in the oil-in-water emulsion cosmetic. <1> ~ <13> An oil-in-water emulsion cosmetic as described in any of the following. <15> The content of component (C) in the oil-in-water emulsion cosmetic is preferably 0.01% by mass or more and 7.5% by mass or less, more preferably 0.05% by mass or more and 5% by mass or less, even more preferably 0.1% by mass or more and 2.5% by mass or less, and particularly preferably 0.3% by mass or more and 2% by mass or less. <1> ~ <13> An oil-in-water emulsion cosmetic as described in any of the following.

[0066] <16> The mass ratio of component (A) to component (C) [(A) / (C)] is preferably 0.1 or more, more preferably 0.5 or more, even more preferably 1 or more, particularly preferably 2 or more, and also preferably 20 or less, more preferably 15 or less, even more preferably 10 or less, particularly preferably 5 or less. <1> ~ <15> An oil-in-water emulsion cosmetic as described in any of the following. <17> The mass ratio of component (A) to component (C) [(A) / (C)] is preferably 0.1 to 20, more preferably 0.5 to 15, even more preferably 1 to 10, and particularly preferably 2 to 5. <1> ~ <15> An oil-in-water emulsion cosmetic as described in any of the following.

[0067] <18> The mass ratio of component (B) to component (C) [(B) / (C)] is preferably 0.1 or more, more preferably 1 or more, even more preferably 1.5 or more, particularly preferably 2 or more, and also preferably 20 or less, more preferably 15 or less, even more preferably 10 or less, particularly preferably 7.5 or less. <1> ~ <17> An oil-in-water emulsion cosmetic as described in any of the following. <19> The mass ratio of component (B) to component (C) [(B) / (C)] is preferably 0.1 to 20, more preferably 1 to 15, even more preferably 1.5 to 10, and particularly preferably 2 to 7.5. <1> ~ <17> An oil-in-water emulsion cosmetic as described in any of the following.

[0068] <20> Component (D) is preferably one or more selected from (D1) a hydrophobized ultraviolet scattering agent and (D2) a hydrophobized powder other than the hydrophobized ultraviolet scattering agent. <1> ~ <19> An oil-in-water emulsion cosmetic as described in any of the following. <21> Component (D1) is preferably hydrophobized fine particle metal oxide. <20> The oil-in-water emulsion cosmetic described above. <22> The fine particle metal oxide is preferably one or more fine particle metal oxides selected from zinc oxide, titanium oxide, cerium oxide, iron oxide, and chromium oxide; more preferably one or more fine particle metal oxides selected from zinc oxide, titanium oxide, and cerium oxide; and even more preferably one or more fine particle metal oxides selected from zinc oxide and titanium oxide. <21> The oil-in-water emulsion cosmetic described above. <23> Component (D2) is preferably one or more selected from hydrophobized organic powder, hydrophobized inorganic powder, and hydrophobized organic-inorganic composite powder, and more preferably the average primary particle size d A This product consists of one or more powders selected from metal oxides, dyes, lake dyes, polymers, extender pigments, pearl pigments, metal salts, inorganic powders, bentonite, smectite, boron nitride, and lauroyl lysine, which have been hydrophobized. <20> ~ <22> An oil-in-water emulsion cosmetic as described in any of the following.

[0069] <24> The content of component (D1) is preferably 1% by mass or more, more preferably 2% by mass or more, and even more preferably 4% by mass or more in the oil-in-water emulsion cosmetic, and also preferably 25% by mass or less, more preferably 20% by mass or less, and even more preferably 15% by mass or less in the oil-in-water emulsion cosmetic. <20> ~ <23> An oil-in-water emulsion cosmetic as described in any of the following. <25> The content of component (D2) is preferably 0% by mass or more, more preferably 0.5% by mass or more, in the oil-in-water emulsion cosmetic, and preferably 12% by mass or less, more preferably 8% by mass or less. <20> ~ <24> An oil-in-water emulsion cosmetic as described in any of the following.

[0070] <26> The content of component (D) is preferably 1% by mass or more, more preferably 2% by mass or more, even more preferably 3% by mass or more, and particularly preferably 5% by mass or more in the oil-in-water emulsion cosmetic, and also preferably 35% by mass or less, more preferably 30% by mass or less, even more preferably 20% by mass or less, and particularly preferably 17% by mass or less in the oil-in-water emulsion cosmetic. <1> ~ <25> An oil-in-water emulsion cosmetic as described in any of the following. <27> The content of component (D) in the oil-in-water emulsion cosmetic is preferably 1% by mass or more and 35% by mass or less, more preferably 2% by mass or more and 30% by mass or less, even more preferably 3% by mass or more and 20% by mass or less, and particularly preferably 5% by mass or more and 17% by mass or less. <1> ~ <26> An oil-in-water emulsion cosmetic as described in any of the following.

[0071] <28> The mass ratio of component (D) to component (B) [(D) / (B)] is preferably 0.1 or more, more preferably 0.5 or more, even more preferably 1 or more, particularly preferably 2 or more, and also preferably 20 or less, more preferably 15 or less, even more preferably 13 or less, particularly preferably 10 or less. <1> ~ <27> An oil-in-water emulsion cosmetic as described in any of the following. <29> The mass ratio of component (D) to component (B) [(D) / (B)] is preferably 0.1 to 20, more preferably 0.5 to 15, even more preferably 1 to 13, and particularly preferably 2 to 10. <1> ~ <27> An oil-in-water emulsion cosmetic as described in any of the following.

[0072] <30> (E) The water content in the oil-in-water emulsion cosmetic is preferably 15% by mass or more, more preferably 20% by mass or more, even more preferably 25% by mass or more, and particularly preferably 30% by mass or more, and also preferably 80% by mass or less, more preferably 70% by mass or less, even more preferably 65% ​​by mass or less, and particularly preferably 60% by mass or less. <1> ~ <29> An oil-in-water emulsion cosmetic as described in any of the following. <31> (E) The water content in the oil-in-water emulsion cosmetic is preferably 15% by mass or more and 80% by mass or less, more preferably 20% by mass or more and 70% by mass or less, even more preferably 25% by mass or more and 65% by mass or less, and particularly preferably 30% by mass or more and 60% by mass or less. <1> ~ <29> An oil-in-water emulsion cosmetic as described in any of the following.

[0073] <32> Furthermore, it contains one or more selected from (F) UV absorbers other than component (A), (G) liquid oils, and (H) surfactants. <1> ~ <31> An oil-in-water emulsion cosmetic as described in any of the following. <33> At 1 atmosphere and 25°C, the total content of liquid polar oil is preferably 0% by mass or more and 40% by mass or less, more preferably 0% by mass or more and 30% by mass or less, and even more preferably 0% by mass or more and 20% by mass or less. <1> ~ <32> An oil-in-water emulsion cosmetic as described in any of the following.

[0074] <34> Preferably, it is in the form of a liquid, emulsion, cream, paste, or gel, more preferably liquid, emulsion, or cream. <1> ~ <33> An oil-in-water emulsion cosmetic as described in any of the following. <35> Preferably, it is a sunscreen cosmetic. <1> ~ <34> An oil-in-water emulsion cosmetic as described in any of the following.

[0075] <36> An oil-in-water emulsion cosmetic containing the following ingredients (A), (B), (C), and (D), wherein the mass ratio of ingredient (B) to ingredient (A) [(B) / (A)] is 0.2 or more and 10 or less. (A) UV absorbers containing siloxane bonds in the molecule: 0.1% to 15% by mass (B) High polymer silicone oil: 1.3% by mass or more and 7% by mass or less (C) Poly(meth)acrylamide compound: 0.1% by mass or more and 2.5% by mass or less (D) Hydrophobized powder: 3% to 20% by mass <37> Component (A) is preferably one or more ultraviolet absorbers selected from silicone-based ultraviolet absorbers and ultraviolet absorbers having trisiloxane residues in their molecule. <36> The oil-in-water emulsion cosmetic described above. <38> The kinematic viscosity of component (B) at 25°C is preferably 10 mm². 2 / s or more 1000mm 2 It is less than or equal to / s. <36> or <37> The oil-in-water emulsion cosmetic described above. <39> Component (C) is preferably a polymer having one or more repeating units selected from repeating units derived from (meth)acrylamide and repeating units derived from (meth)acryloyldimethyltaurine or a salt thereof. <36> ~ <38> An oil-in-water emulsion cosmetic as described in any of the following. <40> At 1 atmosphere and 25°C, the total content of liquid polar oil is preferably 0% by mass or more and 20% by mass or less. <36> ~ <39> An oil-in-water emulsion cosmetic as described in any of the following. <41> The content of 2-ethylhexyl-p-methoxycinnamate is 0% by mass or more and 2% by mass or less. <36> ~ <40> An oil-in-water emulsion cosmetic as described in any of the following. [Examples]

[0076] The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples. In these examples, various measurements and evaluations were performed by the following methods. Examples 3 and 12 are for reference only.

[0077] • Evaluation method (1) UV protection effect (SPF) The estimated SPF was calculated under the following conditions in accordance with the method described in paragraphs

[0164] to

[0165] of Japanese Patent Publication No. 2017-146211, and the ultraviolet protection effect was evaluated. Specifically, a UV spectral image (center wavelength 350 nm, full width at half maximum 10 nm) of the test area was taken in a dark room, and then 2 mg / cm³ of the test sample (cosmetic) was applied to the test area. 2 The coating was applied. After drying for 15 minutes, a UV spectral image was taken again. Next, the transmittance T(λ) was determined using formula (1) described in paragraph

[0016] of Japanese Patent Application Publication No. 2017-146211, and the estimated SPF (in vitro SPF) was calculated using formula (2) described in paragraph

[0047] of the same publication. The parameters were the same as those described in paragraph

[0165] of Japanese Patent Application Publication No. 2017-146211. The evaluation criteria for the ultraviolet protection effect are shown below. (Evaluation criteria for UV protection effectiveness) A: Estimated SPF 50 or higher B: Estimated SPF 35 or higher but less than 50 C: Estimated SPF less than 35

[0078] (2) Effect of suppressing shine caused by sebum Ten female panelists performed a series of procedures: after washing their faces, they applied each cosmetic product to their faces, and then evaluated the absence of oiliness or shine on their skin six hours later. The evaluation criteria for the effectiveness of controlling oiliness are shown below. (Evaluation criteria for the effect of suppressing oily shine) A: More than 8 panelists answered that they felt their oily skin was being controlled. B: Three to seven panelists answered that they felt their oily skin was being controlled. C: Two or fewer panelists answered that they felt their oily skin was being controlled.

[0079] (3) Less stickiness after application The degree of stickiness after application was evaluated by a panel of 10 expert panelists. The evaluation criteria for the degree of stickiness after application are shown below. In addition to the degree of stickiness after application, the degree of squeaky feeling during application was also evaluated. For the cosmetics in Examples 1-15 and 17-18, no panelists felt any squeaky feeling during the sensory evaluation. However, for the cosmetic in Example 16, five panelists felt a squeaky feeling during the sensory evaluation. (Evaluation criteria for the degree of stickiness after application) A: More than 8 panelists answered that it felt less sticky. B: Three to seven panelists answered that it felt less sticky. C: Two or fewer panelists answered that it felt less sticky.

[0080] (4) Stability over time The viscosity of each cosmetic composition at 25°C was measured under the following conditions. Then, each cosmetic composition was stored at 50°C for one month, and the viscosity at 25°C was measured again under the following conditions. The viscosity decrease obtained by subtracting the viscosity after storage from the viscosity before storage was used as the basis for evaluating the stability over time. The viscosity of the cosmetic composition of Example 1 before storage was 170,000 mPa·s, and the viscosity of the cosmetic composition of Comparative Example 4 before storage was 125,000 mPa·s. (Viscosity measurement conditions) Device: TVB-15 manufactured by Toki Sangyo Co., Ltd. Rotor: No.4 Rotation speed: 3 rpm Measurement time: 1 minute (Evaluation criteria for stability over time) ○: Viscosity reduction of 70,000 mPa·s or less △: Viscosity reduction is greater than 70,000 mPa·s and less than or equal to 85,000 mPa·s ×: Viscosity reduction exceeds 85,000 mPa·s

[0081] (Examples 1-18 and Comparative Examples 1-7: Oil-in-water emulsion cosmetics) The oil-in-water emulsion cosmetics of Examples 1-18 and Comparative Examples 1-4 and 7 were manufactured by conventional methods according to the formulations shown in Tables 1-3, and their UV protection effect (SPF), effect of suppressing shine caused by sebum, low stickiness after application, and stability over time were evaluated. The results are shown in Tables 1-3. Furthermore, in the case of the formulations of Comparative Examples 5 and 6 shown in Table 3, the viscosity increased during manufacturing, making stirring impossible, and therefore, oil-in-water emulsion cosmetics could not be manufactured at all.

[0082] [Table 1]

[0083] [Table 2]

[0084] [Table 3]

[0085] The symbols in the table indicate the following: *1: KF-96A-100CS (manufactured by Shin-Etsu Chemical Co., Ltd.) *2: KF-96A-10CS (manufactured by Shin-Etsu Chemical Co., Ltd.) *3: KF-96A-50CS (manufactured by Shin-Etsu Chemical Co., Ltd.) *4: KF-96A-5000CS (manufactured by Shin-Etsu Chemical Co., Ltd.) *5: KF-96A-10000CS (manufactured by Shin-Etsu Chemical Co., Ltd.) *6: KF-96A-6CS (manufactured by Shin-Etsu Chemical Co., Ltd.) *7: This is a mixture of (sodium acrylate / sodium acryloyldimethyl taurate) copolymer: 37.5% by mass, isohexadecane: 22.5% by mass, polysorbate 80: 7.5% by mass, sorbitan oleate: 2.5% by mass, and water: 30.0% by mass. For example, the content of (sodium acrylate / sodium acryloyldimethyl taurate) copolymer in the cosmetic of Example 1 is 0.75% by mass. *8: A mixture of polyacrylamide: 40% by mass, hydrogenated polyisobutene: 30% by mass, laureth-7: 24% by mass, and water: 6% by mass. *9: A mixture of (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer: 90% by mass, sorbitan isostearate: 5% by mass, and polysorbate 60: 5% by mass. *10: Silica / aluminum hydroxide / ASI-treated titanium oxide (average primary particle size: 270nm) *11: Silica / triethoxycaprylylsilane-treated titanium dioxide microparticles (average primary particle size: 15 nm) *12: Dimethicone / triethoxycaprylylsilane-treated zinc oxide microparticles (average primary particle size: 35 nm) *13: A mixture of (acrylates / polytrimethylsiloxy methacrylate) copolymer: 70% by mass and decamethylcyclopentasiloxane: 30% by mass. *14: SUNSIL Tin 50 (manufactured by SUNJIN CHEMICAL)

[0086] (Example 19: Oil-in-water emulsion cosmetic) The oil-in-water emulsion cosmetic of Example 19 also exhibits excellent UV protection (SPF), an effect of suppressing shine caused by sebum, minimal stickiness after application, and long-term stability.

[0087] [Table 4]

Claims

1. An oil-in-water emulsion cosmetic comprising the following components (A), (B), (C), and (D), wherein the highly polymerized silicone oil of component (B) is one or more selected from dimethicone, methylphenylpolysiloxane, and methylhydrogenpolysiloxane, and the mass ratio of component (B) to component (A) [(B) / (A)] is 0.2 or more and 3 or less. (A) UV absorbers having siloxane bonds in their molecules (B) High polymer silicone oil with a kinematic viscosity of 8 mm² / s or more and 10,000 mm² / s or less at 25°C (C) Poly(meth)acrylamide compound (D) Hydrophobized powder

2. The oil-in-water emulsion cosmetic composition according to claim 1, wherein component (A) is one or more ultraviolet absorbers selected from silicone-based ultraviolet absorbers and ultraviolet absorbers having trisiloxane residues in their molecule.

3. The oil-in-water emulsion cosmetic according to claim 1 or 2, wherein the content of component (A) is 0.1% by mass or more and 15% by mass or less in the oil-in-water emulsion cosmetic.

4. The oil-in-water emulsion cosmetic according to any one of claims 1 to 3, wherein the content of component (A) is 1% by mass or more and 4% by mass or less in the oil-in-water emulsion cosmetic.

5. The kinematic viscosity of component (B) at 25°C is 10 mm 2 / s or more 1000mm 2 An oil-in-water emulsion cosmetic composition according to any one of claims 1 to 4, wherein the value is less than or equal to / s.

6. The oil-in-water emulsion cosmetic according to any one of claims 1 to 5, wherein the content of component (B) is 1.3% by mass or more and 7% by mass or less in the oil-in-water emulsion cosmetic.

7. The oil-in-water emulsion cosmetic composition according to any one of claims 1 to 6, wherein component (C) is a polymer having one or more repeating units selected from repeating units derived from (meth)acrylamide and repeating units derived from (meth)acryloyldimethyltaurine or a salt thereof.

8. The oil-in-water emulsion cosmetic according to any one of claims 1 to 7, wherein the content of component (C) is 0.1% by mass or more and 2.5% by mass or less in the oil-in-water emulsion cosmetic.

9. An oil-in-water emulsion cosmetic composition according to any one of claims 1 to 8, wherein component (D) contains (D1) a hydrophobized ultraviolet scattering agent.

10. The oil-in-water emulsion cosmetic according to any one of claims 1 to 9, wherein the content of component (D) is 3% by mass or more and 20% by mass or less in the oil-in-water emulsion cosmetic.

11. An oil-in-water emulsion cosmetic composition according to any one of claims 1 to 10, wherein the total content of liquid polar oils at 1 atmosphere and 25°C is 0% by mass or more and 20% by mass or less.

12. An oil-in-water emulsion cosmetic composition according to any one of claims 1 to 11, wherein the content of 2-ethylhexyl-p-methoxycinnamate is 0% by mass or more and 2% by mass or less.

13. An oil-in-water emulsion cosmetic according to any one of claims 1 to 12, which is a sunscreen cosmetic.

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