Aqueous composition

Abstract

The present invention relates to: an aqueous composition containing the following components (A) to (C): (A) an acrylic tackifier, (B) a hydrophobized plate-shaped powder, and (C) water; a method for producing the aqueous composition; an emulsified skin cosmetic using the aqueous composition; and a method for producing the emulsified skin cosmetic. The content of the component (B) is 0.005% by mass or more and 20% by mass or less; the content of the component (C) is from 40% by mass to 95% by mass (inclusive); the content of the component (D) nonionic surfactant is from 0% by mass to 0.6% by mass (inclusive).

Description

Technical Field

[0001] The present invention relates to an aqueous composition, a method for producing the aqueous composition, an emulsified skin cosmetic using the aqueous composition, and a method for producing the emulsified skin cosmetic. Background Art

[0002] Powder systems are used for various purposes such as colorants or fillers. Especially in the cosmetic field, by using plate-shaped powders or powders covering them as powders, the reflected light from the powders is controlled and used as a component for enhancing the finished makeup effect.

[0003] For example, when applying plate-shaped powders to an oil-in-water type emulsified cosmetic, in order to disperse the plate-shaped powders in the aqueous phase as the external phase, untreated plate-shaped powders having hydrophilicity that are easily dispersed in the aqueous phase are usually blended. However, such untreated plate-shaped powders are not sufficiently water-resistant to moisture such as sweat or water. Therefore, in order to improve the water resistance to moisture such as sweat or water, techniques for dispersing plate-shaped powders subjected to hydrophobic treatment have been studied.

[0004] For example, International Publication No. 2021 / 132273 (Patent Document 1) aims to provide an oil-in-water type emulsified cosmetic that uniformly applies hydrophobic-treated particles to the skin surface and can exhibit a good tone-up effect, etc., and contains pigment-grade hydrophobic-treated particles and hydrophobic-treated fine particles, and describes an oil-in-water type emulsified cosmetic that contains: an aqueous dispersion medium and oil droplets dispersed in the dispersion medium; the dispersion medium contains a nonionic surfactant, a polyol, and pigment-grade hydrophobic-treated particles having an average particle size of 300 nm or more; the oil droplets contain an oil component, a nonionic surfactant, and hydrophobic-treated fine particles having an average particle size of 200 nm or less; the oil component contains a volatile oil.

[0005] International Publication No. 2017 / 203846 (Patent Document 2) aims to provide a liquid dispersion that can stably maintain a dispersed state for a long time and is suitable for both O / W type cosmetics and W / O type cosmetics, etc., and describes a liquid dispersion, etc., that contains: a polyol, a nonionic surfactant, and hydrophobic-treated inorganic powder; the water content in 100% by mass of the liquid dispersion is 1% by mass or less. Summary of the Invention

[0006] The present invention relates to an aqueous composition containing the following components (A) to (C):

[0007] (A) An acrylic thickener;

[0008] (B) Plate-shaped powders subjected to hydrophobic treatment;

[0009] (C) Water; and

[0010] The content of component (B) is 0.005% by mass or more and 20% by mass or less;

[0011] The content of component (C) is 40% by mass or more and 95% by mass or less;

[0012] The content of the nonionic surfactant of component (D) is 0% by mass or more and 0.6% by mass or less. Detailed implementation mode

[0013] Here, when the amount of the nonionic surfactant is small, when applied to the technique of dispersing plate-like powder subjected to hydrophobization treatment in an aqueous phase, the plate-like powder easily settles and the sedimentation resistance is insufficient. Therefore, in the techniques of dispersing powder subjected to hydrophobization treatment in an aqueous phase as described in Patent Documents 1 and 2, a certain amount of nonionic surfactant will be required. However, in the techniques of Patent Documents 1 and 2, it has been found that the film lacks water resistance due to the nonionic surfactant, and it is difficult to exhibit the glossiness (wet glossiness) of the film generated by the coexistence of water and plate-like powder on the skin surface. For example, when the skin is wetted with water at the beach or in the pool on a summer leisure occasion, the wet glossiness exhibited is insufficient. Therefore, a technique is required that can excellently form a film with a wet glossiness, has good extensibility and water moistness of the powder during coating, has a good makeup finish after coating, and also has excellent sedimentation resistance.

[0014] The present invention relates to an aqueous composition that can excellently form a film with a wet glossiness, has good extensibility and water moistness of the powder during coating, has a good makeup finish after coating, and also has excellent sedimentation resistance, a method for producing the aqueous composition, an emulsified skin cosmetic using the aqueous composition, and a method for producing the emulsified skin cosmetic.

[0015] The present inventors focused on containing an acrylic thickener, plate-like powder subjected to hydrophobization treatment, and water, and when the content of the plate-like powder subjected to hydrophobization treatment, the content of water, and the content of the nonionic surfactant are within a specified range, the plate-like powder is stably dispersed in the aqueous phase, the sedimentation of the plate-like powder is suppressed, and at the same time, the extensibility and water moistness of the powder during coating, and the makeup finish after coating can be made good, and a film with a wet glossiness can be formed. Thus, an aqueous composition that can excellently form a film with a wet glossiness, has good extensibility and water moistness of the powder during coating, has a good makeup finish after coating, and also has excellent sedimentation resistance, a method for producing the aqueous composition, an emulsified skin cosmetic using the aqueous composition, and a method for producing the emulsified skin cosmetic can be provided.

[0016] That is, the present invention relates to the following [1] to [4].

[0017] [1] An aqueous composition, which contains the following components (A) to (C):

[0018] (A) An acrylic tackifier;

[0019] (B) Plate-like powder that has been subjected to a hydrophobization treatment;

[0020] (C) Water; and

[0021] The content of component (B) is 0.005% by mass or more and 20% by mass or less;

[0022] The content of component (C) is 40% by mass or more and 95% by mass or less;

[0023] The content of component (D), a nonionic surfactant, is 0% by mass or more and 0.6% by mass or less.

[0024] [2] An emulsified skin cosmetic, which is made using the aqueous composition described in [1] above.

[0025] [3] A method for manufacturing an aqueous composition, wherein the aqueous composition contains the following components (A) to (C):

[0026] (A) An acrylic tackifier;

[0027] (B) Plate-like powder that has been subjected to a hydrophobization treatment;

[0028] (C) Water; and

[0029] The content of component (B) is 0.005% by mass or more and 20% by mass or less;

[0030] The content of component (C) is 40% by mass or more and 95% by mass or less;

[0031] The content of component (D), a nonionic surfactant, is 0% by mass or more and 0.6% by mass or less;

[0032] The manufacturing method includes:

[0033] Step 1: A step of obtaining a mixture containing component (A), component (C), and optionally component (D); and

[0034] Step 2: A step of adding component (B) to the mixture obtained in Step 1 and dispersing it to obtain an aqueous composition.

[0035] [4] A method for manufacturing an emulsified skin cosmetic, which includes: Step 3 of emulsifying using the aqueous composition obtained by the manufacturing method described in [3] above.

[0036] According to the present invention, there can be provided an aqueous composition that can excellently form a coating film with a moist gloss, has good extensibility and wateriness of powder during coating, has a good finished makeup feeling after coating, and also has excellent sedimentation resistance, a method for manufacturing the aqueous composition, an emulsified skin cosmetic using the aqueous composition, and a method for manufacturing the emulsified skin cosmetic.

[0037] [Aqueous composition]

[0038] The aqueous composition of the present invention (hereinafter simply referred to as "the aqueous composition of the present invention" or "aqueous composition") contains the following components (A) to (C):

[0039] (A) An acrylic tackifier;

[0040] (B) Plate-like powder subjected to hydrophobization treatment;

[0041] (C) Water; and

[0042] The content of component (B) is 0.005% by mass or more and 20% by mass or less;

[0043] The content of component (C) is 40% by mass or more and 95% by mass or less;

[0044] The content of component (D) nonionic surfactant is 0% by mass or more and 0.6% by mass or less.

[0045] It should be noted that in the present invention, the so-called "aqueous composition" means that the oil content is preferably 3% by mass or less, more preferably 2% by mass or less, and still more preferably 1% by mass or less. In addition, the so-called oil means a substance with a solubility in water (1 atmosphere, 20 °C) of less than 2 g / 100 gH 2 O.

[0046] In the present invention, the "aqueous composition" is preferably an aqueous dispersion in which component (B) is dispersed in an aqueous phase as a dispersion medium.

[0047] In the present invention, the so-called "containing component X" or "including component X" also means "formulated with component X".

[0048] The present invention can exhibit remarkable effects of excellently forming a coating film with a moist gloss, having good extensibility and wateriness of powder during coating, having a good finished makeup feeling after coating, and also having excellent sedimentation resistance. Although the reason has not been clarified yet, it is considered as follows.

[0049] In the present invention, it is considered that a specified amount of plate-like powder subjected to hydrophobic treatment can be stably dispersed in an aqueous phase containing an acrylic thickener, and sedimentation of the plate-like powder can be suppressed. Further, in the present invention, since a plate-like powder subjected to hydrophobic treatment is used and the content of the plate-like powder and the content of the nonionic surfactant are within a specified range, the spreading property, water wettability of the powder during coating, and the finished makeup feeling after coating are good, and a good wet gloss feeling can be presented. Particularly in the present invention, by forming a film containing an acrylic thickener and a plate-like powder subjected to hydrophobic treatment on the skin, even when such a film comes into contact with water at the beach or in a swimming pool in a summer casual occasion, since the content of the nonionic surfactant is within a specified range, outflow of the plate-like powder from the film can be suppressed, and since water adheres to the plate-like powder contained in the film, the wet gloss feeling of the skin surface when in contact with water can be enhanced through the synergistic optical effect of water and the plate-like powder.

[0050] <(A) Acrylic thickener>

[0051] From the viewpoint of improving sedimentation resistance, the aqueous composition of the present invention contains an acrylic thickener (hereinafter also referred to as "component (A)") as component (A).

[0052] Component (A) can be used alone or in combination of two or more.

[0053] Examples of component (A) include homopolymers of (meth)acrylic acid, (meth)acrylate, or (meth)acrylamide monomers, and copolymers containing one or more structural units derived from these monomers. Among these, from the viewpoint of improving sedimentation resistance, component (A) preferably contains one or more selected from the following substances: (1) crosslinked polyacrylic acid (carbomer); (2) alkyl-modified carboxyvinyl polymer; (3) polyacrylamide; and (4) copolymers containing structural units derived from acrylamide monomers containing one or more selected from acrylamide and acryloyldimethyltaurine. More preferably, it contains one or more selected from the following substances: (1) crosslinked polyacrylic acid (carbomer, carboxyvinyl polymer); (3) polyacrylamide; and (4) copolymers containing structural units derived from acrylamide monomers containing one or more selected from acrylamide and acryloyldimethyltaurine. Even more preferably, it contains one or more selected from the following substances: (1) crosslinked polyacrylic acid (carbomer, carboxyvinyl polymer); (3) polyacrylamide; and (4) copolymers containing structural units derived from acrylamide monomers containing one or more selected from acrylamide and acryloyldimethyltaurine. Even more preferably, it contains one or more selected from the following substances: (4) copolymers containing structural units derived from acrylamide monomers containing one or more selected from acrylamide and acryloyldimethyltaurine.

[0054] Examples of the (1) crosslinked polyacrylic acid (carbomer, carboxyvinyl polymer) include "Carbopol 910", "Carbopol 934", "Carbopol 940", "Carbopol 941", "Carbopol 980", "Carbopol 981" (manufactured by Lubrizol Advanced Materials); "Synthalen K", "Synthalen L" (manufactured by 3V SIGMA).

[0055] Examples of the (2) alkyl-modified carboxyvinyl polymer include copolymers of acrylic acid and alkyl methacrylate (preferably having 8 or more and 30 or less carbon atoms in the alkyl group) such as "PEMULEN TR-1", "PEMULEN TR-2", "Carbopol ETD2020", "Carbopol 1382" (manufactured by Lubrizol Advanced Materials).

[0056] Examples of the (3) polyacrylamide include "SEPIGEL 305" (polyacrylamide, (C13,14) isoparaffin, laureth-7, water), "SEPIGEL 501" ((C13-14) isoparaffin, mineral oil, polyacrylamide, polysorbate 85, sodium polyacrylate).

[0057] As the copolymer (4) containing a structural unit derived from one or more acrylamide monomers selected from acrylamide and acryloyldimethyltaurine (hereinafter also referred to as "AMPS"), preferred examples include copolymers selected from (acrylic acid / acrylamide) copolymer, (acrylic acid / AMPS) copolymer, (dimethylacrylamide / AMPS) copolymer, (acrylic acid / AMPS / dimethylacrylamide) copolymer, (2-hydroxyethyl acrylate / AMPS) copolymer, (AMPS / vinylpyrrolidone) copolymer, (AMPS / vinylformamide) copolymer, (AMPS / polyoxyethylene alkyl ester of methacrylic acid (average number of moles of ethylene oxide added: 10 to 30)) copolymer, and salts thereof. Among these, the copolymer (4) containing a structural unit derived from one or more acrylamide monomers selected from acrylamide and acryloyldimethyltaurine (AMPS) is more preferably a copolymer or a salt thereof containing a structural unit derived from acryloyldimethyltaurine (AMPS), and still more preferably one selected from (acrylic acid / AMPS) copolymer, (dimethylacrylamide / AMPS) copolymer, (acrylic acid / AMPS / dimethylacrylamide) copolymer, (2-hydroxyethyl acrylate / AMPS) copolymer, (AMPS / vinylpyrrolidone) copolymer, (AMPS / vinylformamide) copolymer, (AMPS / polyoxyethylene alkyl ester of methacrylic acid (average number of moles of ethylene oxide added: 10 to 30)) copolymer, and salts thereof; more preferably (acrylic acid / AMPS) copolymer or a salt thereof, and still more preferably (sodium acrylate / sodium acryloyldimethyltaurine) copolymer.

[0058] As a more specific example of the copolymer (4) containing a structural unit derived from one or more acrylamide monomers selected from acrylamide and acryloyldimethyltaurine (AMPS), examples include, for example, (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymer (INCI name: Hydroxyethyl Acrylate / Sodium AcryloyldimethylTaurate Copolymer), (sodium acrylate / sodium acryloyldimethyltaurate) copolymer (INCI name: SodiumAcrylate / Sodium Acryloyldimethyl Taurate Copolymer), (sodium acrylate / acryloyldimethyltaurate / dimethylacrylamide) crosslinked polymer (INCI name: Sodium Acrylate / Acryloyldimethyltaurate / Dimethylacrylamide Crosspolymer), (ammonium acryloyldimethyltaurate / vinylpyrrolidone) copolymer (INCI name: Ammonium Acryloyldimethyltaurate / VPCopolymer), copolymer of acrylic acid / acrylic acid amide / sodium acrylate / sodium acryloyldimethyltaurate (INCI name: Polyacrylate-13), (ammonium acryloyldimethyltaurate / dimethylacrylamide / lauryl methacrylate / lauryl polyether-4 methacrylate) crosslinked polymer (INCI name: Polyacrylate Crosspolymer-6), (ammonium acryloyldimethyltaurate / behenyl polyether-25 methacrylate) crosslinked polymer (INCI name: AmmoniumAcryloyldimethyltaurate / Beheneth-25Methacrylate Crosspolymer), (ammonium acryloyldimethyltaurate / stearyl polyether-25 methacrylate) crosslinked polymer (INCI name: AmmoniumAcryloyldimethyltaurate / Steareth-25Methacrylate Crosspolymer).

[0059] Examples of commercially available copolymers (4) containing structural units derived from one or more acrylamide monomers selected from acrylamide and acryloyldimethyltaurine (AMPS) include "SIMULGEL EG" ((sodium acrylate / sodium acryloyldimethyltaurine) copolymer, isododecane, polysorbate 80, water, sorbitan oleate), "SEPIMAX ZEN" (acrylate crosspolymer-6, tert-butanol), "SEPINOV EMT 10" ((2-hydroxyethyl acrylate / sodium acryloyldimethyltaurine) copolymer, sorbitan isostearate, polysorbate 60), "SIMULGEL NS" ((2-hydroxyethyl acrylate / sodium acryloyldimethyltaurine) copolymer, squalane, polysorbate 60, water, sorbitan isostearate), "SIMULGEL FL" (water, (2-hydroxyethyl acrylate / sodium acryloyldimethyltaurine) copolymer, isododecane, polysorbate 60, sorbitan isostearate), "SEPIPLUS S" ((2-hydroxyethyl acrylate / sodium acryloyldimethyltaurine) copolymer, polyisobutene, PEG-7 trimethylolpropane cocoalkyl ether, water, sorbitan isostearate), "SEPIPLUS 400" (acrylate-13, polyisobutene, water, polysorbate 20, sorbitan isostearate) (all of the above are manufactured by SEPPIC); "Aristoflex AVC" ((ammonium acryloyldimethyltaurate / VP) copolymer, tert-butanol, water), "Aristoflex HMB" ((ammonium acryloyldimethyltaurate / polyether-25 behenyl methacrylate) crosspolymer, tert-butanol, water), "Aristoflex HMS" ((ammonium acryloyldimethyltaurate / polyether-25 stearyl methacrylate) crosspolymer) (all of the above are manufactured by Clariant).

[0060] The content of the component (A) in the aqueous composition of the present invention is preferably 0.03% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.1% by mass or more, even more preferably 0.3% by mass or more, even more preferably 0.5% by mass or more, even more preferably 0.6% by mass or more, more preferably 0.7% by mass or more, and preferably 10% by mass or less, more preferably 7% by mass or less, still more preferably 5% by mass or less, even more preferably 4% by mass or less, even more preferably 3% by mass or less, even more preferably 2% by mass or less, from the viewpoint of improving sedimentation resistance. More specifically, from the viewpoint of improving sedimentation resistance, it is preferably 0.03 to 10% by mass, more preferably 0.05 to 10% by mass, still more preferably 0.1 to 10% by mass, even more preferably 0.3 to 7% by mass, even more preferably 0.5 to 5% by mass, even more preferably 0.6 to 4% by mass, even more preferably 0.6 to 3% by mass, even more preferably 0.6 to 2% by mass, even more preferably 0.7 to 2% by mass.

[0061] <(B) Hydrophobized plate-like powder>

[0062] The aqueous composition of the present invention contains a hydrophobized plate-like powder (hereinafter also referred to as "component (B)") as component (B) from the viewpoints of providing a good finished makeup feeling after coating and improving the wet gloss feeling. In the present invention, the term "plate-like" includes not only the shape of a plate in the narrow sense but also shapes such as flakes. The formation of component (B) can be confirmed by a scanning electron microscope or the like.

[0063] Component (B) is obtained by hydrophobizing a component (B') plate-like powder (raw material plate-like powder).

[0064] Component (B) can be used alone or in combination of two or more.

[0065] Component (B') is preferably composed of 60% by mass or more, more preferably 70% by mass or more, still more preferably 80% by mass or more of inorganic substances.

[0066] As the material constituting component (B'), one or more selected from mica, sericite, talc, kaolin, smectite clay minerals, bismuth oxychloride, synthetic mica, synthetic sericite, plate-like silica, plate-like alumina, boron nitride, barium sulfate, and complexes thereof are used.

[0067] In addition, component (B') may also be a pearlescent pigment having a coating layer on the surface of a plate-like core particle. As the pearlescent pigment, preferably one or more selected from interference pearlescent pigments and colored pearlescent pigments are used.

[0068] An interference pearlescent pigment refers to a pigment that exhibits a pearlescent luster through the interference effect of light reflection. It means that there is a coating layer on the surface of the core particles, and this coating layer contains a reflection interference layer and has light transmittance.

[0069] The core particles are usually translucent plate-like particles, and the reflection interference layer is composed of colorless metal oxides such as titanium oxide or colorless metals. In addition, there are cases where the wavelength color of the reflected light is exhibited depending on the thickness of the reflection interference layer contained in the coating layer, but the coating layer itself has light transmittance.

[0070] In the present invention, the coating layer in the interference pearlescent pigment substantially does not contain non-ferrous metal oxides and non-ferrous metals. It should be noted that the so-called "substantially does not contain" means that neither non-ferrous metal oxides nor non-ferrous metals in a range that causes the light transmittance of the coating layer itself to disappear are contained in the coating layer. The content of non-ferrous metal oxides and non-ferrous metals in the coating layer is preferably 3% by mass or less, more preferably 1% by mass or less, and still more preferably 0.1% by mass or less. Examples of non-ferrous metal oxides include iron oxide, copper oxide, cobalt oxide, chromium oxide, nickel oxide. Examples of non-ferrous metals include gold and copper.

[0071] It should be noted that there is a coating layer on the surface of the core particles, and this coating layer contains a reflection interference layer composed of a colorless metal oxide or a colorless metal and a coloring layer composed of an organic pigment formed on the surface of this reflection interference layer, which is usually called a composite pearlescent pigment. However, on the premise that the entire coating layer has light transmittance, it is included in the interference pearlescent pigment in the present invention.

[0072] Examples of the material of the core particles constituting the interference pearlescent pigment include mica, sericite, talc, kaolin, swelling stone clay minerals, bismuth oxychloride, synthetic mica, synthetic sericite, plate-like silica, and plate-like alumina. Among these, mica is preferred.

[0073] The reflection interference layer contained in the coating layer of the interference pearlescent pigment is preferably a layer composed of a thin film mainly composed of colorless metal oxides such as titanium oxide, zinc oxide, and alumina, or colorless metals such as titanium, zirconium, zinc, tin, silicon, and aluminum. It can be a single-layer structure or a multi-layer structure. As the colorless metal oxide or colorless metal constituting the reflection interference layer, more preferably one or more selected from titanium and titanium oxide, and still more preferably titanium oxide.

[0074] The interference pearlescent pigment is more preferably titanium oxide-coated mica (mica titania).

[0075] There is no particular limitation on the ratio of the core particles to the reflective interference layer constituting the interference pearlescent pigment. The mass ratio of the core particles to the colorless metal oxides and colorless metals constituting the reflective interference layer (core particles / colorless metal oxides and colorless metals constituting the reflective interference layer) is preferably 25 / 75 to 80 / 20, more preferably 30 / 70 to 70 / 30, and still more preferably 50 / 50 to 65 / 35.

[0076] The colored pearlescent pigment is a pigment that exhibits a pearly luster and has a coating layer on the surface of the core particles, and the coating layer is colored with the above-mentioned non-ferrous metal oxides or non-ferrous metals and is not translucent. Thus, different from the interference pearlescent pigment, the colored pearlescent pigment has a shielding property. The core particles, non-ferrous metal oxides, and non-ferrous metals used in the colored pearlescent pigment are the same as those above.

[0077] As specific examples of the colored pearlescent pigment, for example, mica coated with iron oxide, mica titania coated with iron oxide, mica coated with black iron oxide, mica titania coated with black iron oxide, mica titania coated with yellow iron oxide, mica coated with Prussian blue, mica titania coated with iron oxide and black iron oxide, mica titania coated with iron oxide and Prussian blue, bismuth oxychloride coated with iron oxide, and mica coated with bismuth oxychloride coated with iron oxide can be cited.

[0078] As the component (B), a commercially available product can also be used as the component (B') for hydrophobization treatment.

[0079] As the component (B'), for example, "TIMIRON SUPER" series, "TIMIRON SPLENDID" series (both are manufactured by Merck & Co., Inc.); "METASHINE" series (manufactured by Nippon Sheet Glass Co., Ltd.) can be cited.

[0080] As the hydrophobization treatment of the component (B), preferably, one or more selected from the following treatments can be cited: silicone treatment; alkylalkoxysilane treatment; fatty acid treatment; fluorine-containing compound treatment with perfluoroalkyl phosphate, perfluoroalcohol, etc.; amino acid treatment with N-acylglutamic acid, etc.; lecithin treatment; metal soap treatment; alkyl phosphate treatment; and ASI treatment with N-acylamino acid metal salt (sodium lauroyl aspartate), zinc chloride, and alkoxy titanate alkanoate (isopropyl titanate triisostearate), etc.

[0081] These surface treatments can be a single type or a combination of two or more types.

[0082] The treatment amount of the hydrophobization treatment of the component (B) is preferably 0.1% by mass or more, and preferably 30% by mass or less, more preferably 20% by mass or less, based on 100% by mass of the total amount of the component (B).

[0083] It should be noted that in the present invention, the mass, average particle diameter, and average thickness of component (B) respectively mean the mass, average particle diameter, and average thickness including the surface treatment agent.

[0084] The average particle diameter of component (B) is not particularly limited. As the volume median diameter (D50), it is preferably 1 μm or more, more preferably 2 μm or more, further preferably 5 μm or more, still further preferably 7 μm or more, and preferably 50 μm or less, more preferably 40 μm or less, further preferably 35 μm or less, still further preferably 30 μm or less. The specific range of the volume median diameter (D50) of component (B) is preferably 1 to 50 μm, more preferably 2 to 40 μm, further preferably 5 to 35 μm, still further preferably 7 to 30 μm.

[0085] The D50 of component (B) is the value measured by a laser diffraction particle size distribution analyzer.

[0086] In terms of the viewpoints of achieving a good finished makeup feeling after coating and enhancing the moist gloss feeling, the aspect ratio of component (B) is preferably 7 or more, more preferably 10 or more, and preferably 200 or less, more preferably 150 or less. The specific range of the aspect ratio of component (B) is preferably 7 to 200, more preferably 10 to 150.

[0087] The aspect ratio of component (B) is calculated by the ratio of the volume average particle diameter (D50) to the average thickness, and is defined as aspect ratio = (volume average particle diameter (D50) / average thickness).

[0088] It should be noted that the average thickness of component (B) is measured by observing with a scanning electron microscope or a transmission electron microscope, and the numerical average value of the thickness of 10 to 50 particles is calculated and obtained.

[0089] The content of component (B) in the aqueous composition of the present invention is 0.005% by mass or more, preferably 0.03% by mass or more, more preferably 0.1% by mass or more, still more preferably 0.5% by mass or more, even more preferably 1% by mass or more, even more preferably 1.5% by mass or more, from the viewpoints of providing a good finished makeup feeling after coating and enhancing the moist gloss feeling. Moreover, from the viewpoint of good spreading and wateriness of the powder during coating, it is 20% by mass or less, preferably 17% by mass or less, more preferably 10% by mass or less, still more preferably 7% by mass or less, even more preferably 5% by mass or less. More specifically, from the viewpoints of good spreading and wateriness of the powder during coating, a good finished makeup feeling after coating, and enhancing the moist gloss feeling, it is preferably 0.03 to 17% by mass, more preferably 0.1 to 10% by mass, still more preferably 0.5 to 7% by mass, even more preferably 1 to 5% by mass, even more preferably 1.5 to 5% by mass.

[0090] <(C) Water>

[0091] The aqueous composition of the present invention contains water (hereinafter also referred to as "component (C)") as component (C) from the viewpoint of achieving good wateriness and skin compatibility during coating.

[0092] As component (C), for example, refined deionized water, distilled water, high-purity water, and ultrapure water can be used.

[0093] The content of component (C) in the aqueous composition of the present invention is 40% by mass or more, preferably 45% by mass or more, more preferably 47% by mass or more, from the viewpoint of achieving good wateriness and skin compatibility during coating. Moreover, from the viewpoints of providing a good finished makeup feeling after coating, enhancing the moist gloss feeling, and enhancing the sedimentation resistance, it is 95% by mass or less, preferably 90% by mass or less, more preferably 85% by mass or less, still more preferably 80% by mass or less. More specifically, from the viewpoints of good spreading and wateriness of the powder during coating, a good finished makeup feeling after coating, enhancing the moist gloss feeling, and enhancing the sedimentation resistance, it is 40 to 95% by mass, preferably 45 to 90% by mass, more preferably 47 to 85% by mass, still more preferably 47 to 80% by mass.

[0094] <(D) Nonionic surfactant>

[0095] The aqueous composition of the present invention may also contain a nonionic surfactant (hereinafter also referred to as "component (D)") as component (D) within the range that does not hinder the effects of the present invention.

[0096] Component (D) may contain a single type alone or a combination of two or more types.

[0097] As the component (D), examples include one or more selected from sorbitan fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene fatty acid esters, polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, alkyl glucosides, alkyl glycerol ethers, sucrose fatty acid esters, glycerol fatty acid esters, polyglycerol fatty acid esters, polyoxyalkylene hydrogenated castor oils, alkyl polyglycosides, alkylamine oxides, alkylamide amine oxides, and polyether-modified silicones.

[0098] The alkyl group in polyoxyalkylene alkyl ether, alkyl glycoside, alkyl glycerol ether, alkyl polyglycoside, alkylamine oxide, and alkylamide amine oxide, the alkenyl group in polyoxyalkylene alkenyl ether, and the fatty acid group in sorbitan fatty acid ester, polyoxyalkylene sorbitan fatty acid ester, polyoxyalkylene fatty acid ester, sucrose fatty acid ester, glycerol fatty acid ester, and polyglycerol fatty acid ester are preferably those having 8 or more and 22 or less carbon atoms, more preferably 10 or more and 20 or less carbon atoms, and still more preferably 12 or more and 18 or less carbon atoms.

[0099] As the component (D), specific examples include sorbitan monostearate, sorbitan monoisostearate, sorbitan monooleate, polyoxyethylene sorbitan monolaurate (average EO addition mole number 20) (polysorbate 20), polyoxyethylene sorbitan monostearate (average EO addition mole number 20) (polysorbate 60), polyoxyethylene sorbitan monooleate (average EO addition mole number 20) (polysorbate 80), polyoxyethylene (average EO addition mole number 20) sorbitan trioleate (polysorbate 85), polyoxyethylene hydrogenated castor oil (average EO addition mole number 60), polyoxyethylene hydrogenated castor oil (average EO addition mole number 40), polyoxyethylene (average EO addition mole number 7) lauryl ether, polyoxyethylene (average EO addition mole number 7) trimethylolpropane coconut alkyl ether, and polydimethylsiloxane polyol.

[0100] Among these, the component (D) is preferably one or more selected from sorbitan fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene alkyl ethers, polyoxyalkylene hydrogenated castor oils, and polyether-modified silicones, and more preferably one or more selected from sorbitan fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene alkyl ethers, and polyoxyalkylene hydrogenated castor oils.

[0101] The HLB of component (D) is preferably 19.0 or less, more preferably 18.0 or less, still more preferably 17.0 or less, and even more preferably 16.0 or less; and it is preferably 3.0 or more, more preferably 3.5 or more, still more preferably 4.0 or more. More specifically, it is preferably from 3.0 to 19.0, more preferably from 3.5 to 18.0, still more preferably from 4.0 to 17.0, and even more preferably from 4.0 to 16.0.

[0102] Herein, the HLB (Hydrophile-Lipophile Balance) of component (D) is an index representing the ratio of the relative affinity of a surfactant for two liquids in an oil-water system, and can be obtained by the Griffin method (J. Soc. Cosm. Chem., 1954, 5: 249-256) from the following formula.

[0103] HLB = 20 × [(total formula weight of hydrophilic groups contained in the surfactant) / (molecular weight of the surfactant)]

[0104] Examples of the hydrophilic groups contained in the surfactant include hydroxyl groups and ethyleneoxy groups.

[0105] When two or more nonionic surfactants are mixed as component (D), the mixed HLB of component (D) is preferably 15.0 or less, more preferably 14.0 or less, still more preferably 13.0 or less, and even more preferably 12.5 or less, and it is preferably 5.0 or more, more preferably 7.0 or more, still more preferably 9.0 or more, and even more preferably 10.0 or more. More specifically, it is preferably from 5.0 to 15.0, more preferably from 7.0 to 14.0, still more preferably from 9.0 to 13.0, still more preferably from 10.0 to 13.0, and even more preferably from 10.0 to 12.5.

[0106] Herein, the mixed HLB is obtained by weighted-averaging the HLB of each nonionic surfactant according to its mass ratio content, from the following formula.

[0107] Mixed HLB = Σ(HLBx × Wx) / ΣWx

[0108] HLBx represents the HLB of nonionic surfactant X. Wx represents the mass (g) of nonionic surfactant X.

[0109] The content of component (D) in the aqueous composition of the present invention is 0% by mass or more, preferably 0.05% by mass or more, more preferably 0.1% by mass or more. Moreover, from the viewpoint of enhancing the wet glossiness, it is preferably 0.6% by mass or less, more preferably 0.5% by mass or less, still more preferably 0.4% by mass or less, and even more preferably 0.3% by mass or less. More specifically, from the viewpoint of enhancing the wet glossiness, it is preferably 0 to 0.5% by mass, more preferably 0 to 0.4% by mass, still more preferably 0 to 0.3% by mass, even more preferably 0.05 to 0.3% by mass, and even more preferably 0.1 to 0.3% by mass.

[0110] When the aqueous composition of the present invention contains component (D), the mass ratio [(A) / (D)] of the content of component (A) to the content of component (D) in the aqueous composition of the present invention is preferably 0.8 or more, more preferably 1.0 or more, still more preferably 1.2 or more, even more preferably 1.4 or more, even more preferably 1.8 or more, even more preferably 2.0 or more, even more preferably 2.5 or more, and even more preferably 3.0 or more from the viewpoints of enhancing the wet glossiness and enhancing the sedimentation resistance; and is preferably 10 or less, more preferably 9.5 or less, still more preferably 9.0 or less, and even more preferably 8.5 or less. More specifically, from the viewpoints of enhancing the wet glossiness and enhancing the sedimentation resistance, it is preferably 0.8 to 10, more preferably 1.0 to 10, still more preferably 1.0 to 9.5, even more preferably 1.0 to 9.0, even more preferably 1.2 to 8.5, even more preferably 1.4 to 8.5, even more preferably 1.8 to 8.5, even more preferably 2.0 to 8.5, even more preferably 2.5 to 8.5, and even more preferably 3.0 to 8.5.

[0111] That is, in other words, from the viewpoints of enhancing the wet glossiness and enhancing the sedimentation resistance, the mass ratio [(D) / (A)] of the content of component (D) to the content of component (A) in the aqueous composition of the present invention is preferably 1.2 or less, more preferably 1.1 or less, still more preferably 1.0 or less, even more preferably 0.90 or less, even more preferably 0.80 or less, even more preferably 0.70 or less, even more preferably 0.60 or less, even more preferably 0.50 or less, even more preferably 0.40 or less, even more preferably 0.30 or less. Moreover, it is preferably 0 or more, more preferably 0.10 or more. More specifically, from the viewpoints of enhancing the wet glossiness and enhancing the sedimentation resistance, it is preferably 0 to 1.2, more preferably 0 to 1.1, still more preferably 0 to 1.0, even more preferably 0 to 0.90, even more preferably 0 to 0.80, even more preferably 0 to 0.70, even more preferably 0 to 0.60, even more preferably 0 to 50, even more preferably 0 to 0.40, even more preferably 0 to 0.30, and even more preferably 0.10 to 0.30.

[0112] <(E) is selected from one or more of a monohydric alcohol and a polyhydric alcohol>

[0113] From the viewpoint of making the water wettability during coating good, the aqueous composition of the present invention preferably further contains one or more selected from a monohydric alcohol and a polyhydric alcohol (hereinafter also referred to as "component (E)") as component (E).

[0114] Examples of the monohydric alcohol used as component (E) include saturated monohydric alcohols having 2 to 4 carbon atoms such as ethanol, propanol, isopropanol, and tert-butanol.

[0115] Examples of the polyhydric alcohol used as component (E) include dihydric alcohols such as ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol (average molecular weight less than 650), 1,2-propanediol (propylene glycol), 1,3-propanediol (propylene glycol), dipropylene glycol, polypropylene glycol (average molecular weight less than 650), 1,3-butanediol (1,3-butylene glycol), and polybutylene glycol (average molecular weight less than 650); and trihydric alcohols such as glycerol, diglycerol, and polyglycerol.

[0116] Among these, in terms of the view that the water wettability during coating is good, the component (E) is preferably at least one selected from saturated monohydric alcohols having 2 to 4 carbon atoms and polyhydric alcohols having 2 to 12 carbon atoms, more preferably at least one selected from ethanol, ethylene glycol, diethylene glycol, 1,2-propanediol (propylene glycol), 1,3-propanediol (propylene glycol), dipropylene glycol, 1,3-butanediol, and glycerol, still more preferably at least one selected from ethanol, 1,3-propanediol, dipropylene glycol, 1,3-butanediol, and glycerol, and even more preferably at least one selected from ethanol, dipropylene glycol, 1,3-butanediol, and glycerol.

[0117] The component (E) can be used alone or in combination of two or more.

[0118] When the aqueous composition of the present invention contains the component (E), the content of the component (E) in the aqueous composition of the present invention, in terms of the view that the water wettability during coating is good, is preferably 0.5% by mass or more, more preferably 1% by mass or more, still more preferably 1.5% by mass or more, and preferably 50% by mass or less, more preferably 47% by mass or less, still more preferably 45% by mass or less. More specifically, in terms of the view that the water wettability during coating is good, it is preferably 0.5 to 50% by mass, more preferably 1 to 47% by mass, still more preferably 1 to 45% by mass, and even more preferably 1.5 to 45% by mass.

[0119] When the aqueous composition of the present invention contains the component (E), the mass ratio [(B) / (E)] of the content of the component (B) to the content of the component (E) in the aqueous composition of the present invention, in terms of the view that the spreading of the powder during coating and the water wettability are good and the sedimentation resistance is improved, is preferably 3 or less, more preferably 2 or less, still more preferably 1 or less, even more preferably 0.7 or less, even more preferably 0.5 or less, and even more preferably 0.3 or less; and in terms of the view that the finished makeup feeling after coating is good and the wet gloss feeling is improved, it is preferably 0.0001 or more, more preferably 0.001 or more, still more preferably 0.01 or more, and even more preferably 0.05 or more. More specifically, in terms of the view that the spreading of the powder during coating and the water wettability, the finished makeup feeling after coating, the wet gloss feeling, and the sedimentation resistance are good, it is preferably 0.0001 to 3, more preferably 0.001 to 2, still more preferably 0.01 to 1, even more preferably 0.05 to 0.7, even more preferably 0.05 to 0.5, and even more preferably 0.05 to 0.3.

[0120] When the aqueous composition of the present invention contains component (E), the mass ratio [(D) / (E)] of the content of component (D) to the content of component (E) in the aqueous composition of the present invention is preferably 0.3 or less, more preferably 0.2 or less, still more preferably 0.15 or less, even more preferably 0.08 or less, even more preferably 0.05 or less, even more preferably 0.04 or less, even more preferably 0.03 or less, from the viewpoints of good water wettability during coating and enhanced wet glossiness; and is preferably 0.001 or more, more preferably 0.005 or more, still more preferably 0.007 or more, even more preferably 0.01 or more. More specifically, from the viewpoints of good water wettability during coating and enhanced wet glossiness, it is preferably 0.001 to 0.3, more preferably 0.005 to 0.2, still more preferably 0.007 to 0.15, even more preferably 0.007 to 0.08, even more preferably 0.007 to 0.05, even more preferably 0.01 to 0.04, even more preferably 0.01 to 0.03.

[0121] When the aqueous composition of the present invention contains component (E), the mass ratio [(E) / (C)] of the content of component (E) to the content of component (C) in the aqueous composition of the present invention is preferably 0.01 or more, more preferably 0.02 or more, still more preferably 0.05 or more, even more preferably 0.10 or more, even more preferably 0.20 or more, from the viewpoint of good water wettability during coating; and is preferably 1 or less, more preferably 0.95 or less, still more preferably 0.90 or less. More specifically, from the viewpoint of good water wettability during coating, it is preferably 0.01 to 1, more preferably 0.01 to 0.95, still more preferably 0.02 to 0.95, even more preferably 0.02 to 0.90, even more preferably 0.05 to 0.90, even more preferably 0.10 to 0.90, even more preferably 0.20 to 0.90.

[0122] In the aqueous composition of the present invention, in addition to components (A) to (E), optional components used according to the cosmetic use can be appropriately contained within the range that does not impair the effects of the present invention. Examples of such optional components include surfactants other than components (A) to (E), water-soluble polymers, oils, neutralizing agents, pH adjusters, bactericides, anti-inflammatory agents, preservatives, coloring agents, chelating agents, whitening agents, antiperspirants, insect repellents, physiologically active components, salts, antioxidants, and fragrances.

[0123] The viscosity of the aqueous composition of the present invention at 25°C is preferably 1,200 mPa·s or more, more preferably 3,000 mPa·s or more, still more preferably 5,000 mPa·s or more, and even more preferably 10,000 mPa·s or more from the viewpoint of improving sedimentation resistance. Further, from the viewpoint of operability, it is preferably 200,000 mPa·s or less, more preferably 100,000 mPa·s or less, and still more preferably 70,000 mPa·s or less. More specifically, from the viewpoints of improving sedimentation resistance and operability, it is preferably 1,200 to 200,000 mPa·s, more preferably 3,000 to 100,000 mPa·s, still more preferably 5,000 to 70,000 mPa·s, and even more preferably 10,000 to 70,000 mPa·s. The viscosity of the aqueous composition of the present invention is measured at 25°C using a B-type viscometer, rotor No. 4, 12 rpm, for 30 seconds as described in the examples. Among them, when the viscosity of the aqueous composition exceeds 50,000 mPa·s, it is measured using rotor No. 4, 6 rpm, for 3 seconds; when the viscosity of the aqueous composition exceeds 100,000 mPa·s, it is measured using rotor No. 4, 3 rpm, for 60 seconds.

[0124] [Method for producing aqueous composition]

[0125] The aqueous composition of the present invention is preferably produced by a method comprising the following steps: Step 1: a step of obtaining a mixture containing component (A), component (C), and optionally component (D); and Step 2: a step of adding component (B) to the mixture obtained in Step 1 and dispersing it to obtain an aqueous composition.

[0126] In Step 1, when the aqueous composition of the present invention does not contain component (D), it is a step of obtaining a mixture of component (A) and component (C); when the aqueous composition of the present invention further contains component (D), Step 1 is a step of obtaining a mixture containing component (A), component (C), and component (D). In Step 1, component (A) is preferably dissolved or dispersed in component (C).

[0127] In Step 1, the mixing order of component (A), component (C), and optionally used component (D) is not particularly limited. When the aqueous composition of the present invention further contains component (D), the remaining component (C) may be further added to a mixture in which component (A) and component (D) are mixed with a part of component (C) to obtain the mixture of Step 1.

[0128] When the aqueous composition of the present invention further contains component (E), step 2 is preferably a step of adding component (B) and component (E) to the mixture obtained in step 1 to disperse component (B) to obtain an aqueous composition. At this time, from the viewpoints of wetting the surface of component (B), improving the dispersibility of component (B), and improving the anti-settling property, it is preferable to pre-mix component (B) and component (E) and then add them to the mixture obtained in step 1.

[0129] The temperature during the mixing or dispersion in step 1 and step 2 is preferably 0 °C or higher, and preferably 40 °C or lower, more preferably 35 °C or lower, and still more preferably 30 °C or lower.

[0130] As the stirring means used for mixing or dispersion in step 1 and step 2, if it can impart a shearing force, there is no particular limitation, and examples thereof include a homogenizer, "DISPER (disperser)" (trade name, manufactured by PRIMIX Corporation), "CLEARMIX" (trade name, manufactured by M Technique Co., Ltd.), and "Cavitron" (trade name, manufactured by Taihei Yoki Kogyo Co., Ltd.). The stirring means can be appropriately selected according to the type of component (A). Among these, it is preferably one or more selected from a homogenizer and a disperser.

[0131] When using a homogenizer, the rotation speed of the homogenizer depends on the type of component (A), and is preferably 3,000 rpm or higher, more preferably 5,000 rpm or higher, still more preferably 7,000 rpm or higher, and preferably 30,000 rpm or lower, more preferably 20,000 rpm or lower, and still more preferably 15,000 rpm or lower.

[0132] When using a disperser, the rotation speed of the disperser depends on the type of component (A), and is preferably 500 rpm or higher, more preferably 1,000 rpm or higher, still more preferably 2,000 rpm or higher, and preferably 10,000 rpm or lower, more preferably 7,000 rpm or lower, and still more preferably 5,000 rpm or lower.

[0133] In step 1 and step 2, the mixing or dispersion time is not particularly limited, and is preferably 0.5 minutes or longer, more preferably 1 minute or longer, still more preferably 1.5 minutes or longer; and preferably 30 minutes or shorter, more preferably 20 minutes or shorter, and still more preferably 10 minutes or shorter.

[0134] The aqueous composition of the present invention is preferably used in a cosmetic.

[0135] Examples of the form of the cosmetic include liquid, emulsion, paste, cream, gel, wax, and multi-layer.

[0136] As a preparation for cosmetics, it can be used as an emulsion type or an aqueous type. Among these, the aqueous composition of the present invention is preferably used in emulsified cosmetics. As emulsified cosmetics, either an oil-in-water type emulsified cosmetic or a water-in-oil type emulsified cosmetic can be used. From the viewpoints of improving the dispersibility of component (B) and thus improving the sedimentation resistance, and of providing a good moist gloss feeling, it is more preferably used as the external phase of an oil-in-water type emulsified cosmetic.

[0137] As cosmetics, it is preferably applicable to various cosmetics such as skin cosmetics, cosmetics for eyebrows or eyelashes, hair cosmetics, etc.

[0138] As skin cosmetics, various skin cosmetics such as makeup cosmetics, base makeup cosmetics, skin care cosmetics, and ultraviolet ray protection cosmetics such as sunscreens can be mentioned.

[0139] As cosmetics for eyebrows or eyelashes, various cosmetics for eyebrows or eyelashes such as mascara, mascara base makeup, mascara topcoat, and eyebrow cream can be mentioned.

[0140] As hair cosmetics, in addition to hair cleansers such as shampoo, hair conditioners, hair styling agents, hair care agents (including non-rinse types), hair styling products, hair dyes, and hair growth agents can also be mentioned.

[0141] When the aqueous composition of the present invention is used as an aqueous cosmetic, skin cosmetics such as lotion, essence, etc., and makeup cosmetics can be mentioned; hair cosmetics such as hair tonic. Among these, when the aqueous composition of the present invention is used as an aqueous cosmetic, the aqueous composition of the present invention is preferably used in gel-like skin cosmetics.

[0142] In addition, when the aqueous composition of the present invention is used in emulsified cosmetics, it is preferably used in emulsified skin cosmetics.

[0143] [Emulsified skin cosmetics]

[0144] The emulsified skin cosmetic of the present invention (hereinafter also referred to as "the emulsified skin cosmetic of the present invention" or "emulsified skin cosmetic") is made by using the above aqueous composition. The emulsified skin cosmetic of the present invention can be prepared into either a water-in-oil type or an oil-in-water type.

[0145] When the emulsified skin cosmetic of the present invention is of the oil-in-water type, the content of the aqueous composition in the emulsified skin cosmetic is preferably 55% by mass or more, more preferably 60% by mass or more, still more preferably 65% by mass or more, from the viewpoints of productivity and good emulsion stability; and is preferably 90% by mass or less, more preferably 85% by mass or less, still more preferably 80% by mass or less. More specifically, it is preferably 55 to 90% by mass, more preferably 60 to 85% by mass, still more preferably 65 to 80% by mass.

[0146] When the emulsified skin cosmetic of the present invention is of the water-in-oil type, the content of the aqueous composition in the emulsified skin cosmetic is preferably 5% by mass or more, more preferably 7% by mass or more, still more preferably 10% by mass or more, from the viewpoints of productivity and good emulsion stability; and is preferably 35% by mass or less, more preferably 30% by mass or less, still more preferably 25% by mass or less. More specifically, it is preferably 5 to 35% by mass, more preferably 7 to 30% by mass, still more preferably 10 to 25% by mass.

[0147] <(F) oil agent>

[0148] The emulsified skin cosmetic of the present invention preferably further contains component (F) oil agent (hereinafter also referred to as "component (F)") from the viewpoint of good emulsion stability.

[0149] Component (F) can be volatile or non-volatile. In addition, component (F) can be used alone or in combination of two or more.

[0150] It should be noted that in this specification, the definition of "oil agent" is as described above. In addition, "volatile" means that the evaporation amount at 25°C for 6 hours measured by the following method is 20% or more; "non-volatile" means that the evaporation amount at 25°C for 6 hours measured by the following method is less than 20%.

[0151] Measurement method: Place a filter paper with a diameter of 90 mm in a glass petri dish with a diameter of 120 mm, place 1 g of the sample on the filter paper, and store it in a room at 65% RH (25°C) for 6 hours. Measure the mass of the sample before and after storage, and calculate the evaporation amount by the following formula.

[0152] Evaporation amount (%) = (mass of the sample before storage - mass of the sample after storage) / mass of the sample before storage × 100

[0153] As component (F), a volatile or non-volatile liquid or solid oil agent is preferred, and a volatile or non-volatile liquid oil agent is more preferred. Examples include one or more selected from silicone oil, ester oil, hydrocarbon oil, higher alcohol, and higher fatty acid used in the use of skin cosmetics.

[0154] In this specification, the term "liquid state" refers to a state having fluidity under 1 atmospheric pressure and at an ambient temperature of 25°C, that is, a state under temperature conditions above the melting point (for amorphous substances without a melting point, it is a state under temperature conditions above the softening point). In addition, the term "solid state" refers to a state without fluidity under 1 atmospheric pressure and at an ambient temperature of 25°C, that is, a state under temperature conditions lower than the melting point (for amorphous substances without a melting point, it is a state under temperature conditions lower than the softening point).

[0155] From the viewpoint of emulsion stability, the content of the component (F) in the emulsified skin cosmetic of the present invention is preferably 3% by mass or more, more preferably 4% by mass or more, still more preferably 5% by mass or more. Moreover, from the viewpoints of providing good water moistness during application and good finished makeup feeling after application, it is preferably 30% by mass or less, more preferably 25% by mass or less, still more preferably 20% by mass or less. More specifically, it is preferably 3 to 30% by mass, more preferably 4 to 25% by mass, still more preferably 5 to 20% by mass.

[0156] <(G) Ultraviolet ray protecting agent>

[0157] The emulsified skin cosmetic of the present invention may further contain an ultraviolet ray protecting agent as the component (G) from the viewpoints of scattering or absorbing ultraviolet rays and improving the ultraviolet ray protection effect.

[0158] From the viewpoints of scattering or absorbing ultraviolet rays and improving the ultraviolet ray protection effect, the component (G) is preferably at least one selected from the group consisting of a component (G1) ultraviolet ray scattering agent (hereinafter also referred to as "component (G1)") and a component (G2) ultraviolet ray absorber (hereinafter also referred to as "component (G2)").

[0159] [Component (G1): Ultraviolet ray scattering agent]

[0160] From the viewpoint of scattering ultraviolet rays and improving the ultraviolet ray protection effect, the component (G1) is preferably an inorganic particle other than the component (B), and more preferably a fine metal oxide. The component (G1) may be used alone or in combination of two or more.

[0161] From the viewpoints of scattering ultraviolet rays and improving the ultraviolet ray protection effect, the fine metal oxide used as the component (G1) is preferably at least one selected from the group consisting of fine zinc oxide, fine titanium oxide, and fine cesium oxide, and more preferably at least one selected from the group consisting of fine zinc oxide and fine titanium oxide. In addition, these fine metal oxides may contain a metal with a valence of 2 or more, and may contain two or more metals such as iron, zirconium, calcium, manganese, magnesium, yttrium or their oxides alone or in appropriate combination in the above-mentioned fine metal oxides.

[0162] Examples of the shape of the component (G1) include spherical, rod-shaped, spindle-shaped, needle-shaped, and irregular shapes.

[0163] In terms of the viewpoints of improving the ultraviolet ray protection effect and improving the emulsion stability, the average primary particle diameter of the component (G1) is preferably less than 100 nm, more preferably 90 nm or less, still more preferably 70 nm or less, and even more preferably 50 nm or less; further, in terms of the same viewpoints as above, it is preferably 1 nm or more, more preferably 3 nm or more, and still more preferably 5 nm or more. More specifically, in terms of the viewpoints of improving the ultraviolet ray protection effect and improving the emulsion stability, the average primary particle diameter of the component (G1) is preferably 1 nm or more and 90 nm or less, more preferably 1 nm or more and 70 nm or less, still more preferably 1 nm or more and 50 nm or less, even more preferably 3 nm or more and 50 nm or less, and even more preferably 5 nm or more and 50 nm or less.

[0164] The average primary particle diameter of the component (G1) can be obtained from the observation image of a transmission electron microscope (TEM). Specifically, observation is carried out by TEM under the condition of an observation magnification of 50,000 times, the maximum short diameter of 300 primary particles in the observation image is measured, and its numerical average value is calculated to obtain it. Here, the so-called maximum short diameter means the short diameter orthogonal to the long diameter and having the maximum length among the short diameters.

[0165] The fine particle metal oxide used as the component (G1) is preferably subjected to a hydrophobization treatment in terms of the viewpoint of emulsion stability. Examples of the hydrophobization treatment of the component (G1) include the treatments exemplified for the above component (B). These surface treatments can be a single type or a combination of two or more types. When the component (G1) is obtained by hydrophobization treatment, the mass and average primary particle diameter of the component (G1) mean the mass and average primary particle diameter including the surface treatment agent.

[0166] Examples of commercially available hydrophobized fine particle zinc oxide include the FINEX series (manufactured by Sakai Chemical Industry Co., Ltd.); the MZ series and MZY series (both are manufactured by TAYCA Corporation).

[0167] Examples of commercially available hydrophobized fine particle titanium oxide include the STR series (manufactured by Sakai Chemical Industry Co., Ltd.); the TTO-55 series and TTO-51 series (both are manufactured by Ishihara Sangyo Co., Ltd.); the MT series and MTY series (both are manufactured by TAYCA Corporation).

[0168] [Component (G2): Ultraviolet absorber]

[0169] The component (G2) is preferably at least one organic ultraviolet absorber selected from a liquid organic ultraviolet absorber and a solid organic ultraviolet absorber.

[0170] Examples of the liquid organic ultraviolet absorbers include cinnamic acid derivatives such as 2-ethylhexyl p-methoxycinnamate, 2-ethoxyethyl p-methoxycinnamate, a mixture of isopropyl p-methoxycinnamate and diisopropyl cinnamate, a mixture of isopropyl trimethoxycinnamate and diisopropyl cinnamate, and methyl bis(trimethylsiloxysilyl) isopentyl trimethoxycinnamate; p-aminobenzoic acid derivatives such as pentyl p-dimethylaminobenzoate and 2-ethylhexyl p-dimethylaminobenzoate; salicylic acid derivatives such as ethylene glycol salicylate, 2-ethylhexyl salicylate, benzyl salicylate, and trimethylcyclohexyl salicylate; Octocrylene; and diethylbenzylidenemalonate dimethylpolysiloxane.

[0171] Examples of the solid organic ultraviolet absorbers include 4-tert-butyl-4'-methoxydibenzoylmethane, hexyl 2-(4-diethylamino-2-hydroxybenzoyl)benzoate, 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)phenylamino]-1,3,5-triazine, 2-hydroxy-4-methoxydiphenyl ketone, cresol triazole trisiloxane, 2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine, and 2-ethylhexyl dimethoxybenzylidene dioxoimidazolidine propionate.

[0172] Examples of the commercially available products of component (G2) include "UVINUL MC80" (2-ethylhexyl p-methoxycinnamate (ethylhexyl methoxycinnamate)), "UVINUL APLUS" (hexyl 2-(4-diethylamino-2-hydroxybenzoyl)benzoate (diethylamino hydroxybenzoyl benzoic acid hexyl ester)), "TINOSORB S" (2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine (bis-ethylhexyloxyphenol methoxyphenyl triazine)), and "UVINUL T-150" (2,4,6-tris[4-(2-ethylhexyloxycarbonyl)phenylamino]-1,3,5-triazine (ethylhexyl triazone)) (manufactured by BASF Corporation); "Soft shade DH" (2-ethylhexyl dimethoxybenzylidene dioxoimidazolidine propionate (ethylhexyl dimethoxybenzylidene dioxoimidazolidine propionate)) (manufactured by Ajinomoto Co., Inc.); "PARSOL1789" (4-tert-butyl-4'-methoxydibenzoylmethane (tert-butyl methoxydibenzoylmethane)), and PARSOL SLX (polysiloxane-15 (dimethylpolysiloxane diethylbenzylidenemalonate)) (manufactured by DSM).

[0173] The content of component (G) in the emulsified skin cosmetic of the present invention is preferably 1% by mass or more, more preferably 5% by mass or more, and still more preferably 10% by mass or more from the viewpoint of improving the ultraviolet ray protection effect; further, from the viewpoint of emulsion stability, it is preferably 30% by mass or less, more preferably 25% by mass or less, and still more preferably 20% by mass or less. More specifically, it is preferably 1 to 30% by mass, more preferably 5 to 25% by mass, and still more preferably 10 to 20% by mass.

[0174] The content of component (G1) in the emulsified skin cosmetic of the present invention is preferably 1% by mass or more, more preferably 3% by mass or more, and still more preferably 5% by mass or more from the viewpoint of improving the ultraviolet ray protection effect; further, from the viewpoint of emulsion stability, it is preferably 30% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less. More specifically, it is preferably 1 to 30% by mass, more preferably 3 to 20% by mass, and still more preferably 5 to 15% by mass.

[0175] The content of component (G2) in the emulsified skin cosmetic of the present invention is preferably 1% by mass or more, more preferably 2% by mass or more, and still more preferably 3% by mass or more from the viewpoint of improving the ultraviolet ray protection effect; further, from the viewpoint of emulsion stability, it is preferably 30% by mass or less, more preferably 20% by mass or less, and still more preferably 10% by mass or less. More specifically, it is preferably 1 to 30% by mass, more preferably 2 to 20% by mass, and still more preferably 3 to 10% by mass.

[0176] In the emulsified skin cosmetic of the present invention, optional components may be appropriately contained within the range that does not hinder the effects of the present invention. Examples of such optional components include surfactants other than components (A) to (G), water-soluble polymers, neutralizing agents, pH adjusters, bactericides, anti-inflammatory agents, preservatives, colorants, chelating agents, whitening agents, antiperspirants, insect repellents, physiologically active components, salts, antioxidants, and fragrances.

[0177] [Method for manufacturing emulsified skin cosmetic]

[0178] As the emulsified skin cosmetic of the present invention, a preferred method includes step 3, which is to emulsify using the aqueous composition obtained by the above manufacturing method including steps 1 and 2. When the emulsified skin cosmetic of the present invention is an oil-in-water type, step 3 is preferably a step of emulsifying an oily composition using the above aqueous composition.

[0179] The oily composition used in Step 3 is preferably composed of the oil-soluble oil-phase components used in the above emulsified skin cosmetic. It should be noted that the so-called "oil-soluble" means water-insoluble, specifically referring to a substance with a solubility in water (1 atm, 20 °C) of less than 2 g / 100 gH 2 O.

[0180] In Step 3, it is preferable to emulsify the aqueous composition and the oily composition by means of stirring such as a homogenizing mixer or a homogenizer according to a conventional method.

[0181] When the emulsified skin cosmetic of the present invention is of the water-in-oil type, the content of the aqueous composition in the emulsified skin cosmetic is preferably 55% by mass or more, more preferably 60% by mass or more, still more preferably 65% by mass or more, and preferably 90% by mass or less, more preferably 85% by mass or less, still more preferably 80% by mass or less, from the viewpoints of productivity and good emulsion stability. More specifically, it is preferably 55 to 90% by mass, more preferably 60 to 85% by mass, still more preferably 65 to 80% by mass.

[0182] When the emulsified skin cosmetic of the present invention is of the oil-in-water type, the content of the aqueous composition in the emulsified skin cosmetic is preferably 5% by mass or more, more preferably 7% by mass or more, still more preferably 10% by mass or more, and preferably 35% by mass or less, more preferably 30% by mass or less, still more preferably 25% by mass or less, from the viewpoints of productivity and good emulsion stability. More specifically, it is preferably 5 to 35% by mass, more preferably 7 to 30% by mass, still more preferably 10 to 25% by mass.

[0183] Regarding the above embodiments, the present invention further discloses the following embodiments.

[0184] <1> An aqueous composition, containing the following components (A) to (C):

[0185] (A) An acrylic thickener;

[0186] (B) Plate-shaped powder subjected to hydrophobization treatment;

[0187] (C) Water; and

[0188] The content of component (B) is 0.005% by mass or more and 20% by mass or less;

[0189] The content of component (C) is 40% by mass or more and 95% by mass or less;

[0190] The content of component (D) nonionic surfactant is 0% by mass or more and 0.6% by mass or less.

[0191] <2>The aqueous composition according to <1>, wherein component (A) preferably contains one or more selected from the following substances: (1) crosslinked polyacrylic acid (carbomer, carboxyvinyl polymer); (2) alkyl-modified carboxyvinyl polymer; (3) polyacrylamide; and (4) a copolymer containing a structural unit derived from an acrylamide monomer containing one or more selected from acrylamide and acryloyldimethyltaurine; more preferably contains one or more selected from the following substances: (1) crosslinked polyacrylic acid (carbomer, carboxyvinyl polymer); (3) polyacrylamide; and (4) a copolymer containing a structural unit derived from an acrylamide monomer containing one or more selected from acrylamide and acryloyldimethyltaurine; even more preferably contains one or more selected from the following substances: (1) crosslinked polyacrylic acid (carbomer, carboxyvinyl polymer); (3) polyacrylamide; and (4) a copolymer containing a structural unit derived from an acrylamide monomer containing one or more selected from acrylamide and acryloyldimethyltaurine; even more preferably contains one or more selected from the following substances: (4) a copolymer containing a structural unit derived from an acrylamide monomer containing one or more selected from acrylamide and acryloyldimethyltaurine.

[0192] <3>The aqueous composition according to <2>, wherein the copolymer (4) containing a structural unit derived from an acrylamide monomer containing one or more selected from acrylamide and acryloyldimethyltaurine (AMPS) is preferably one or more selected from (acrylic acid / acrylamide) copolymer, (acrylic acid / AMPS) copolymer, (dimethylacrylamide / AMPS) copolymer, (acrylic acid / AMPS / dimethylacrylamide) copolymer, (2-hydroxyethyl acrylate / AMPS) copolymer, (AMPS / vinylpyrrolidone) copolymer, (AMPS / vinylformamide) copolymer, (AMPS / polyoxyethylene alkyl ester of methacrylic acid (average number of moles of ethylene oxide added: 10 to 30)) copolymer, and salts thereof.

[0193] <4>The aqueous composition according to <2>, wherein (4) is a copolymer containing structural units derived from one or more acrylamide monomers selected from acrylamide and acryloyldimethyltaurine (AMPS), preferably a copolymer containing structural units derived from acryloyldimethyltaurine (AMPS) or a salt thereof, more preferably one or more selected from (acrylic acid / AMPS) copolymer, (dimethylacrylamide / AMPS) copolymer, (acrylic acid / AMPS / dimethylacrylamide) copolymer, (2-hydroxyethyl acrylate / AMPS) copolymer, (AMPS / vinylpyrrolidone) copolymer, (AMPS / vinylformamide) copolymer, (AMPS / polyoxyethylene alkyl ester of methacrylic acid (average number of moles of ethylene oxide added: 10 to 30)) copolymer, and salts thereof; even more preferably (acrylic acid / AMPS) copolymer or a salt thereof, and even more preferably (sodium acrylate / sodium acryloyldimethyltaurine) copolymer.

[0194] <5>The aqueous composition according to any one of <1> to <4>, wherein the component (B) is a substance obtained by hydrophobizing a pearlescent pigment as a plate-shaped powder (raw material plate-shaped powder) as the component (B').

[0195] <6>The aqueous composition according to any one of <1> to <5>, wherein the hydrophobization treatment of the component (B) is one or more selected from the following treatments: silicone treatment; alkylalkoxysilane treatment; fatty acid treatment; fluorine-containing compound treatment with perfluoroalkyl phosphate, perfluoroalcohol, etc.; amino acid treatment with N-acylglutamic acid, etc.; lecithin treatment; metal soap treatment; alkyl phosphate treatment; and ASI treatment with N-acylamino acid metal salt (sodium lauroyl aspartate), zinc chloride and alkoxy titanate of alkanoic acid (isopropyl titanate triisostearate).

[0196] <7>The aqueous composition according to any one of <1> to <6>, wherein the volume median diameter (D50) of the component (B) is preferably 1 μm or more, more preferably 2 μm or more, further preferably 5 μm or more, even more preferably 7 μm or more, and preferably 50 μm or less, more preferably 40 μm or less, further preferably 35 μm or less, even more preferably 30 μm or less.

[0197] <8>The aqueous composition according to any one of <1> to <6>, wherein the volume median diameter (D50) of the component (B) is preferably 1 to 50 μm, more preferably 2 to 40 μm, further preferably 5 to 35 μm, even more preferably 7 to 30 μm.

[0198] <9>The aqueous composition according to any one of <1> to <8>, wherein component (D) is preferably at least one selected from sorbitan fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene fatty acid esters, polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, alkyl glucosides, alkyl glycerol ethers, sucrose fatty acid esters, glycerol fatty acid esters, polyglycerol fatty acid esters, polyoxyalkylene hydrogenated castor oils, alkylpolyglycosides, alkylamine oxides, alkylamide amine oxides, and polyether-modified silicones. More preferably, it is at least one selected from sorbitan fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene alkyl ethers, polyoxyalkylene hydrogenated castor oils, and polyether-modified silicones. Even more preferably, it is at least one selected from sorbitan fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene alkyl ethers, and polyoxyalkylene hydrogenated castor oils.

[0199] <10>The aqueous composition according to any one of <1> to <9>, wherein the HLB of component (D) is preferably 19.0 or less, more preferably 18.0 or less, even more preferably 17.0 or less, and still more preferably 16.0 or less; and preferably 3.0 or more, more preferably 3.5 or more, even more preferably 4.0 or more.

[0200] <11>The aqueous composition according to any one of <1> to <9>, wherein the HLB of component (D) is preferably from 3.0 to 19.0, more preferably from 3.5 to 18.0, even more preferably from 4.0 to 17.0, and still more preferably from 4.0 to 16.0.

[0201] <12>The aqueous composition according to any one of <1> to <11>, wherein when two or more nonionic surfactants are used as component (D), the mixed HLB of component (D) is preferably 15.0 or less, more preferably 14.0 or less, even more preferably 13.0 or less, and still more preferably 12.5 or less, and preferably 5.0 or more, more preferably 7.0 or more, even more preferably 9.0 or more, and still more preferably 10.0 or more.

[0202] <13>The aqueous composition according to any one of <1> to <11>, wherein when two or more nonionic surfactants are used as component (D), the mixed HLB of component (D) is preferably from 5.0 to 15.0, more preferably from 7.0 to 14.0, even more preferably from 9.0 to 13.0, still more preferably from 10.0 to 13.0, and still more preferably from 10.0 to 12.5.

[0203] <14>The aqueous composition according to any one of <1> to <13>, which further contains component (E) being at least one selected from monohydric alcohols and polyhydric alcohols.

[0204] <15>The aqueous composition as described in <14>, wherein component (E) is preferably at least one selected from saturated monohydric alcohols having 2 or more and 4 or fewer carbon atoms and polyhydric alcohols having 2 or more and 12 or fewer carbon atoms; more preferably at least one selected from ethanol, ethylene glycol, diethylene glycol, 1,2 - propanediol (propylene glycol), 1,3 - propanediol (trimethylene glycol), dipropylene glycol, 1,3 - butanediol (1,3 - butylene glycol), and glycerol; still more preferably at least one selected from ethanol, 1,3 - propanediol, dipropylene glycol, 1,3 - butanediol, and glycerol; even more preferably at least one selected from ethanol, dipropylene glycol, 1,3 - butanediol, and glycerol.

[0205] <16>The aqueous composition as described in any one of <1> to <15>, wherein the content of component (A) in the aqueous composition is preferably 0.03% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.1% by mass or more, even more preferably 0.3% by mass or more, even more preferably 0.5% by mass or more, even more preferably 0.6% by mass or more, even more preferably 0.7% by mass or more, and preferably 10% by mass or less, more preferably 7% by mass or less, still more preferably 5% by mass or less, even more preferably 4% by mass or less, even more preferably 3% by mass or less, even more preferably 2% by mass or less.

[0206] <17>The aqueous composition as described in any one of <1> to <15>, wherein the content of component (A) in the aqueous composition is preferably 0.03 to 10% by mass, more preferably 0.05 to 10% by mass, still more preferably 0.1 to 10% by mass, even more preferably 0.3 to 7% by mass, even more preferably 0.5 to 5% by mass, even more preferably 0.6 to 4% by mass, even more preferably 0.6 to 3% by mass, even more preferably 0.6 to 2% by mass, even more preferably 0.7 to 2% by mass.

[0207] <18>The aqueous composition as described in any one of <1> to <17>, wherein the content of component (B) in the aqueous composition is preferably 0.03% by mass or more, more preferably 0.1% by mass or more, still more preferably 0.5% by mass or more, even more preferably 1% by mass or more, even more preferably 1.5% by mass or more, and is 20% by mass or less, preferably 17% by mass or less, more preferably 10% by mass or less, still more preferably 7% by mass or less, even more preferably 5% by mass or less.

[0208] <19>The aqueous composition according to any one of <1> to <17>, wherein the content of the component (B) in the aqueous composition is preferably 0.03 to 17% by mass, more preferably 0.1 to 10% by mass, still more preferably 0.5 to 7% by mass, even more preferably 1 to 5% by mass, and even more preferably 1.5 to 5% by mass.

[0209] <20>The aqueous composition according to any one of <1> to <19>, wherein the content of the component (C) in the aqueous composition is preferably 45% by mass or more, more preferably 47% by mass or more; and preferably 90% by mass or less, more preferably 85% by mass or less, still more preferably 80% by mass or less.

[0210] <21>The aqueous composition according to any one of <1> to <19>, wherein the content of the component (C) in the aqueous composition is preferably 45 to 90% by mass, more preferably 47 to 85% by mass, still more preferably 47 to 80% by mass.

[0211] <22>The aqueous composition according to any one of <1> to <21>, wherein the content of the component (D) in the aqueous composition is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and preferably 0.5% by mass or less, more preferably 0.4% by mass or less, still more preferably 0.3% by mass or less.

[0212] <23>The aqueous composition according to any one of <1> to <21>, wherein the content of the component (D) in the aqueous composition is preferably 0 to 0.5% by mass, more preferably 0 to 0.4% by mass, still more preferably 0 to 0.3% by mass, even more preferably 0.05 to 0.3% by mass, and even more preferably 0.1 to 0.3% by mass.

[0213] <24>The aqueous composition according to any one of <1> to <23>, wherein the mass ratio [(A) / (D)] of the content of the component (A) to the content of the component (D) in the aqueous composition is preferably 0.8 or more, more preferably 1.0 or more, still more preferably 1.2 or more, even more preferably 1.4 or more, even more preferably 1.8 or more, even more preferably 2.0 or more, even more preferably 2.5 or more, even more preferably 3.0 or more; and preferably 10 or less, more preferably 9.5 or less, still more preferably 9.0 or less, even more preferably 8.5 or less.

[0214] <25>The aqueous composition according to any one of <1> to <23>, wherein the mass ratio [(A) / (D)] of the content of component (A) to the content of component (D) in the aqueous composition is preferably 0.8 to 10, more preferably 1.0 to 10, still more preferably 1.0 to 9.5, still more preferably 1.0 to 9.0, still more preferably 1.2 to 8.5, still more preferably 1.4 to 8.5, still more preferably 1.8 to 8.5, still more preferably 2.0 to 8.5, still more preferably 2.5 to 8.5, still more preferably 3.0 to 8.5.

[0215] <26>The aqueous composition according to any one of <1> to <25>, wherein the mass ratio [(D) / (A)] of the content of component (D) to the content of component (A) in the aqueous composition is preferably 1.2 or less, more preferably 1.1 or less, still more preferably 1.0 or less, still more preferably 0.90 or less, still more preferably 0.80 or less, still more preferably 0.70 or less, still more preferably 0.60 or less, still more preferably 0.50 or less, still more preferably 0.40 or less, still more preferably 0.30 or less, and preferably 0 or more, more preferably 0.10 or more.

[0216] <27>The aqueous composition according to any one of <1> to <25>, wherein the mass ratio [(D) / (A)] of the content of component (D) to the content of component (A) in the aqueous composition is preferably 0 to 1.2, more preferably 0 to 1.1, still more preferably 0 to 1.0, still more preferably 0 to 0.90, still more preferably 0 to 0.80, still more preferably 0 to 0.70, still more preferably 0 to 0.60, still more preferably 0 to 0.50, still more preferably 0 to 0.40, still more preferably 0 to 0.30, still more preferably 0.10 to 0.30.

[0217] <28>The aqueous composition according to any one of <14> to <27>, wherein the content of component (E) in the aqueous composition is preferably 0.5% by mass or more, more preferably 1% by mass or more, still more preferably 1.5% by mass or more, and preferably 50% by mass or less, more preferably 47% by mass or less, still more preferably 45% by mass or less.

[0218] <29>The aqueous composition according to any one of <14> to <27>, wherein the content of component (E) in the aqueous composition is preferably 0.5 to 50% by mass, more preferably 1 to 47% by mass, still more preferably 1 to 45% by mass, still more preferably 1.5 to 45% by mass.

[0219] <30>The aqueous composition according to any one of <14> to <29>, wherein the mass ratio [(B) / (E)] of the content of component (B) to the content of component (E) in the aqueous composition is preferably 3 or less, more preferably 2 or less, still more preferably 1 or less, even more preferably 0.7 or less, even more preferably 0.5 or less, even more preferably 0.3 or less; and is preferably 0.0001 or more, more preferably 0.001 or more, still more preferably 0.01 or more, even more preferably 0.05 or more.

[0220] <31>The aqueous composition according to any one of <14> to <29>, wherein the mass ratio [(B) / (E)] of the content of component (B) to the content of component (E) in the aqueous composition is preferably from 0.0001 to 3, more preferably from 0.001 to 2, still more preferably from 0.01 to 1, even more preferably from 0.05 to 0.7, even more preferably from 0.05 to 0.5, even more preferably from 0.05 to 0.3.

[0221] <32>The aqueous composition according to any one of <14> to <31>, wherein when the aqueous composition contains component (E), the mass ratio [(D) / (E)] of the content of component (D) to the content of component (E) in the aqueous composition is preferably 0.3 or less, more preferably 0.2 or less, still more preferably 0.15 or less, even more preferably 0.08 or less, even more preferably 0.05 or less, even more preferably 0.04 or less, even more preferably 0.03 or less; and is preferably 0.001 or more, more preferably 0.005 or more, still more preferably 0.007 or more, even more preferably 0.01 or more.

[0222] <33>The aqueous composition according to any one of <14> to <31>, wherein when the aqueous composition contains component (E), the mass ratio [(D) / (E)] of the content of component (D) to the content of component (E) in the aqueous composition is preferably from 0.001 to 0.3, more preferably from 0.005 to 0.2, still more preferably from 0.007 to 0.15, even more preferably from 0.007 to 0.08, even more preferably from 0.007 to 0.05, even more preferably from 0.01 to 0.04, even more preferably from 0.01 to 0.03.

[0223] <34>The aqueous composition according to any one of <14> to <33>, wherein the mass ratio [(E) / (C)] of the content of component (E) to the content of component (C) in the aqueous composition is preferably 0.01 or more, more preferably 0.02 or more, still more preferably 0.05 or more, even more preferably 0.10 or more, and even more preferably 0.20 or more; and preferably 1 or less, more preferably 0.95 or less, still more preferably 0.90 or less.

[0224] <35>The aqueous composition according to any one of <14> to <33>, wherein the mass ratio [(E) / (C)] of the content of component (E) to the content of component (C) in the aqueous composition is preferably 0.01 to 1, more preferably 0.01 to 0.95, still more preferably 0.02 to 0.95, even more preferably 0.02 to 0.90, even more preferably 0.05 to 0.90, even more preferably 0.10 to 0.90, and even more preferably 0.20 to 0.90.

[0225] <36>The aqueous composition according to any one of <1> to <35>, wherein the viscosity of the aqueous composition is preferably 1,200 mPa·s or more, more preferably 3,000 mPa·s or more, still more preferably 5,000 mPa·s or more, even more preferably 10,000 mPa·s or more, and further preferably 200,000 mPa·s or less, more preferably 100,000 mPa·s or less, and still more preferably 70,000 mPa·s or less.

[0226] <37>The aqueous composition according to any one of <1> to <35>, wherein the viscosity of the aqueous composition is preferably 1,200 to 200,000 mPa·s, more preferably 3,000 to 100,000 mPa·s, still more preferably 5,000 to 70,000 mPa·s, and even more preferably 10,000 to 70,000 mPa·s.

[0227] <38>An emulsified skin cosmetic, wherein the emulsified skin cosmetic is made using the aqueous composition according to any one of <1> to <37>.

[0228] <39>The emulsified skin cosmetic according to <38>, which further contains (F) an oil agent.

[0229] <40>The emulsified skin cosmetic according to <39>, wherein the content of component (F) in the emulsified skin cosmetic is preferably 3% by mass or more, more preferably 4% by mass or more, still more preferably 5% by mass or more, and preferably 30% by mass or less, more preferably 25% by mass or less, and still more preferably 20% by mass or less.

[0230] <41>The emulsified skin cosmetic described in <39>, wherein the content of component (F) in the emulsified skin cosmetic is preferably 3 to 30% by mass, more preferably 4 to 25% by mass, and still more preferably 5 to 20% by mass.

[0231] <42>The emulsified skin cosmetic according to any one of <38> to <41>, further comprising at least one selected from component (G1) an ultraviolet scattering agent and component (G2) an ultraviolet absorber.

[0232] <43>The emulsified skin cosmetic described in <42>, wherein the content of component (G1) in the emulsified skin cosmetic is preferably 1% by mass or more, more preferably 3% by mass or more, and still more preferably 5% by mass or more; further, it is preferably 30% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less.

[0233] <44>The emulsified skin cosmetic described in <42>, wherein the content of component (G1) in the emulsified skin cosmetic is preferably 1 to 30% by mass, more preferably 3 to 20% by mass, and still more preferably 5 to 15% by mass.

[0234] <45>The emulsified skin cosmetic according to any one of <42> to <44>, wherein the content of component (G2) in the emulsified skin cosmetic is preferably 1% by mass or more, more preferably 2% by mass or more, and still more preferably 3% by mass or more; further, it is preferably 30% by mass or less, more preferably 20% by mass or less, and still more preferably 10% by mass or less.

[0235] <46>The emulsified skin cosmetic according to any one of <42> to <44>, wherein the content of component (G2) in the emulsified skin cosmetic is preferably 1 to 30% by mass, more preferably 2 to 20% by mass, and still more preferably 3 to 10% by mass.

[0236] <47>A method for producing an aqueous composition, wherein the aqueous composition contains the following components (A) to (C):

[0237] (A) An acrylic thickener;

[0238] (B) Plate-shaped powder that has been subjected to a hydrophobization treatment;

[0239] (C) Water; and

[0240] The content of component (B) is 0.005% by mass or more and 20% by mass or less;

[0241] The content of component (C) is 40% by mass or more and 95% by mass or less;

[0242] The content of the nonionic surfactant as component (D) is 0 mass % or more and 0.6 mass % or less;

[0243] The manufacturing method includes:

[0244] Step 1: A step of obtaining a mixture containing component (A), component (C), and optionally component (D); and

[0245] Step 2: A step of adding component (B) to the mixture obtained in Step 1 and dispersing it to obtain an aqueous composition.

[0246] <48>The manufacturing method of the aqueous composition as described in <47>, wherein in Step 2, component (B) and component (E) are added to the mixture obtained in Step 1 to disperse component (B) to obtain an aqueous composition.

[0247] <49>A manufacturing method of an emulsified skin cosmetic, which includes: Step 3 of emulsifying using the aqueous composition obtained by the manufacturing method described in <47> or <48>.

[0248] [Examples]

[0249] Examples and comparative examples are described in detail below, but the present invention is not limited to these.

[0250] (Measurement of viscosity of aqueous composition)

[0251] The viscosity of the aqueous composition is measured at 25 °C using a B-type viscometer, rotor No. 4, 12 rpm, for 30 seconds. Among them, when the viscosity exceeds 50,000 mPa·s, it is measured using rotor No. 4, 6 rpm, for 3 seconds, and when the viscosity exceeds 100,000 mPa·s, it is measured using rotor No. 4, 3 rpm, for 60 seconds.

[0252] [Examples 1 to 25, Comparative Examples 1 to 4]

[0253] According to the formulations shown in Tables 2 to 4, each aqueous composition is obtained by the following method.

[0254] It should be noted that the amounts shown in Tables 2 to 4 are the amounts of the active ingredients of each component (mass %).

[0255] The raw materials used in Tables 2 to 4 are shown in Table 1.

[0256] (Step 1)

[0257] Components 1 to 4, 12 to 18, and 23 to 26 shown in Tables 2 to 4 are mixed using a homogenizing mixer at 10,000 rpm for 2 minutes to obtain each mixture.

[0258] (Step 2)

[0259] To each of the mixtures obtained in Step 1, components 5 to 11 and 19 to 22 shown in Tables 2 to 4 are added, and dispersion is carried out at 10,000 rpm for 2 minutes using a homogenizer to obtain each aqueous composition.

[0260] It should be noted that when carbomer is used as component (A), in the preparation of the mixture in Step 1, instead of mixing at 10,000 rpm for 2 minutes using a homogenizer, mixing is carried out at 3,000 rpm for 10 minutes using a disperser.

[0261] [Table 1]

[0262]

[0263] Using the obtained aqueous compositions, the following are evaluated: (1) wet glossiness, (2) good degree of powder spreading during coating, (3) water moistness during coating, (4) beauty of the finished makeup after coating, and (5) sedimentation resistance. The results are shown in Tables 2 to 4.

[0264] (1) Evaluation of wet glossiness

[0265] The obtained aqueous composition is coated at 2 mg / cm² on a 3 cm × 3 cm square of black artificial leather (Idemitsu Technofine Co., Ltd., "trade name SUPPLALE") manufactured by Idemitsu Technofine Co., Ltd. 2 , and it is dried for 5 minutes to form a coating film on the black artificial leather. Then, pure water is added to a beaker to a depth of 2 cm, and the lower half (the part up to 1.5 cm in the vertical direction) of the artificial leather on which the coating film is formed is vertically arranged on the water surface and immersed for 10 seconds. The coating film after being immersed for 10 seconds is taken out, and the surface of the coating film just after being taken out is visually observed, and the coating glossiness of the coating film surface is evaluated according to the following evaluation criteria.

[0266] (Evaluation criteria)

[0267] A+: By coating water on the coating film surface, a very good glossiness is presented.

[0268] A: By coating water on the coating film surface, a good glossiness is obtained.

[0269] B: Although glossiness is obtained by coating water on the coating film surface, the glossiness is slightly uneven.

[0270] C: Although glossiness is obtained by coating water on the coating film surface, the glossiness is quite uneven.

[0271] D: Even when coated on the coating film surface, no glossiness is obtained.

[0272] (2) Degree of good spreading of powder during coating

[0273] The obtained aqueous composition was applied to the wrist, and the degree of good spreading of the powder was evaluated according to the following evaluation criteria.

[0274] (Evaluation criteria)

[0275] A+: The spreading is very good.

[0276] A: The spreading is good.

[0277] B: The spreading is slightly good.

[0278] C: The spreading is not very good.

[0279] (3) Degree of water wetness during coating

[0280] The obtained aqueous composition was applied to the wrist, and the water wetness was evaluated according to the following evaluation criteria.

[0281] (Evaluation criteria)

[0282] A+: Very water-wet.

[0283] A: Water-wet.

[0284] B: Slightly water-wet.

[0285] C: Not very water-wet.

[0286] (4) Beauty degree of full makeup after coating

[0287] The obtained aqueous composition was applied to the wrist. After drying for 10 minutes, the coated area was visually observed for coating unevenness and coloring effect, and evaluated according to the following evaluation criteria.

[0288] (Evaluation criteria)

[0289] A+: Almost no coating unevenness, uniform, and coloring effect can be confirmed.

[0290] A: Little coating unevenness, and coloring effect can be confirmed.

[0291] B: Although there is some coating unevenness, coloring effect can be confirmed.

[0292] C: Coating unevenness is clearly confirmed, or coloring effect cannot be confirmed.

[0293] (5) Sedimentation resistance

[0294] 0.6 g of the obtained aqueous composition was placed into a 1.5 mL sample tube, and after centrifugation under the conditions shown in the following evaluation criteria, the presence or absence of sediment was visually confirmed.

[0295] (Evaluation Criteria)

[0296] A+: No sediment was confirmed even after centrifugation at 1000 xg for 1 minute.

[0297] A: No sediment was confirmed even after centrifugation at 530 xg for 1 minute, but sediment was confirmed after centrifugation at 1000 xg for 1 minute.

[0298] B: No sediment was confirmed even after centrifugation at 59 xg for 1 minute, but sediment was confirmed after centrifugation at 530 xg for 1 minute.

[0299] C: Sediment was confirmed after centrifugation at 59 xg for 1 minute.

[0300] D: Sediment was confirmed after standing at 25°C for 14 days without centrifugation.

[0301] It should be noted that for the aqueous compositions evaluated as A+, A, B, and C above, no sediment was confirmed after standing at 25°C for 14 days.

[0302]

[0303]

[0304] [Table 4]

[0305]

[0306] Details of component (B) and component (B’) used in Tables 2 to 4 are shown below.

[0307] *1: ASI-treated pearlescent pigment B1 (D50: 22 μm) (ASI treatment amount: 2% by mass) obtained by subjecting interference pearlescent pigment (titanium oxide-coated mica) B1’ to ASI treatment (surface treatment agents: isopropyltriisostearoyl titanate, sodium lauroyl aspartate, zinc chloride)

[0308] *2: OTS-treated pearlescent pigment B2 (triethoxyoctanoyl silane treatment amount: 3% by mass) obtained by subjecting interference pearlescent pigment (titanium oxide-coated mica) B1’ to surface treatment using triethoxyoctanoyl silane as a surface treatment agent

[0309] *3: SI-treated pearlescent pigment B3 (polydimethylsiloxane treatment amount: 3% by mass) obtained by subjecting interference pearlescent pigment (titanium oxide-coated mica) B1’ to surface treatment using polydimethylsiloxane as a surface treatment agent

[0310] *4: SA-treated pearlescent pigment B4 (polymethylsiloxane treatment amount: 3% by mass), obtained by subjecting interference pearlescent pigment (titanium oxide-coated mica) B1' to surface treatment using polymethylsiloxane as a surface treatment agent

[0311] *5: SI06-treated pearlescent pigment B5 (hydrogenated polymethylsiloxane treatment amount: 3% by mass), obtained by subjecting interference pearlescent pigment (titanium oxide-coated mica) B1' to surface treatment using hydrogenated polymethylsiloxane as a surface treatment agent

[0312] *6: ASI-treated talc B6 (D50: 9 μm) (ASI treatment amount: 2% by mass), obtained by subjecting talc B2' to ASI treatment (surface treatment agents: isopropyl triisostearoyl titanate, sodium lauroyl aspartate, zinc chloride)

[0313] *7: Interference pearlescent pigment B1' (titanium oxide-coated mica)

[0314] As can be seen from Tables 2 to 4, compared with the aqueous compositions of the comparative examples, the aqueous compositions of the examples are excellent in wet glossiness, the spreading property, water wettability of the powder during coating, and the finished makeup feeling after coating are good, and the sedimentation resistance is also excellent.

[0315] Hereinafter, Formulation Examples 1 to 5 of the emulsified skin cosmetic of the present invention are listed in Table 5.

[0316] The emulsified skin cosmetics of Formulation Examples 1 to 5 are obtained by the following method according to the formulations shown in Table 5.

[0317] It should be noted that the blending amounts shown in Table 5 are the active ingredient amounts (mass%) of the respective components.

[0318] Step I: Components 7 to 20 shown in Table 5 are mixed and dissolved at 80°C to 90°C to obtain a preparation.

[0319] Step II: While maintaining the preparation obtained in Step I at 80°C to 90°C, Components 5 to 6 shown in Table 5 are added, and dispersed for 10 minutes at 3,000 rpm using a disperser to obtain an oily composition.

[0320] Step III: Component 21 is added to Components 1 to 4 (aqueous composition) shown in Table 5, and mixed for 2 minutes at 10,000 rpm using a homogenizer to obtain a mixture.

[0321] Step IV: The 80°C to 90°C oily composition obtained in Step II and Component 22 shown in Table 5 are added to the mixture obtained in Step III, and mixed for 2 minutes at 10,000 rpm using a homogenizer to emulsify and obtain an oil-in-water type emulsified skin cosmetic.

[0322] [Table 5]

[0323]

[0324] The details of the components used in Table 5 are shown below.

[0325] *1: Hydrophobically treated titanium oxide fine particles with an average primary particle size of 15 nm

[0326] *2: Hydrophobically treated zinc oxide fine particles with an average primary particle size of 35 nm

[0327] *3: "SILICONE KF-96A-6CS" (polydimethylsiloxane) manufactured by Shin-Etsu Chemical Co., Ltd.

[0328] *4: "UVINUL MC80" (ethylhexyl methoxycinnamate) manufactured by BASF

[0329] *5: "SUN-SHEL DMTS" (cresol triazole trisiloxane) manufactured by SERASOO Co., Ltd.

[0330] *6: "TINOSORB S" (bis-ethylhexyloxyphenol methoxyphenyl triazine) manufactured by BASF

[0331] *7: "PARSOL SLX" (polysiloxane-15) manufactured by DSM

[0332] *8: "UVINUL T-150" (ethylhexyl triazone) manufactured by BASF

[0333] *9: "UVINUL APLUS" (diethylamino hydroxybenzoyl benzoic acid hexyl ester) manufactured by BASF

[0334] (Industrial Applicability)

[0335] The aqueous composition of the present invention excellently forms a film with a moist gloss, has good extensibility and wateriness of the powder during coating, has a good finished makeup feeling after coating, and also has excellent sedimentation resistance, and is thus particularly useful when applied to emulsified skin cosmetics.

Claims

1. An aqueous composition, wherein, the aqueous composition contains the following components (A) to (C): (A) An acrylic tackifier; (B) Plate-like powder that has been hydrophobized; (C) Water; and the content of component (B) is 0.005% by mass or more and 20% by mass or less; the content of component (C) is 40% by mass or more and 95% by mass or less; the content of component (D) nonionic surfactant is 0% by mass or more and 0.6% by mass or less.

2. The aqueous composition according to claim 1, wherein, component (A) is a copolymer containing structural units derived from one or more acrylamide monomers selected from acrylamide and acryloyldimethyltaurine.

3. The aqueous composition according to claim 1 or 2, wherein, the viscosity of the aqueous composition at 25°C is 1,200 mPa·s or more and 200,000 mPa·s or less.

4. The aqueous composition according to any one of claims 1 to 3, wherein, the mass ratio (D) / (A) of the content of component (D) to the content of component (A) is 1.2 or less.

5. The aqueous composition according to any one of claims 1 to 4, wherein, component (A) is a (sodium acrylate / sodium acryloyldimethyltaurine) copolymer.

6. The aqueous composition according to any one of claims 1 to 5, wherein, further contains one or more components (E) selected from monohydric alcohols and polyhydric alcohols, and the mass ratio (B) / (E) of the content of component (B) to the content of component (E) is 3 or less.

7. An emulsified skin cosmetic, wherein, the emulsified skin cosmetic is made using the aqueous composition according to any one of claims 1 to 6.

8. A method for manufacturing an aqueous composition, wherein, the aqueous composition contains the following components (A) to (C): (A) An acrylic tackifier; (B) Plate-like powder that has been hydrophobized; (C) Water; and the content of component (B) is 0.005% by mass or more and 20% by mass or less; the content of component (C) is 40% by mass or more and 95% by mass or less; the content of component (D) nonionic surfactant is 0% by mass or more and 0.6% by mass or less; the manufacturing method includes: Step 1: A step of obtaining a mixture containing component (A), component (C), and optionally component (D); and Step 2: A step of adding component (B) to the mixture obtained in Step 1 and dispersing it to obtain an aqueous composition.

9. The method for manufacturing an aqueous composition according to claim 8, wherein, Step 2 is a step of adding component (B) and one or more components (E) selected from monohydric alcohols and polyhydric alcohols to the mixture obtained in Step 1 and dispersing component (B) to obtain an aqueous composition.

10. A method for manufacturing an emulsified skin cosmetic, wherein, the manufacturing method includes: Step 3 of emulsifying using the aqueous composition obtained by the manufacturing method according to claim 8 or 9.

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