Dispersion, method for producing the same, and cosmetic

Abstract

A dispersion containing the following (A) to (D) components is excellent not only in dispersibility immediately after production but also in viscosity stability (dispersion stability). (A) non-volatile oil having a kinematic viscosity of 1 to 100 mm 2 2 / s: 15 to 65 mass%, (B) powder: 30 to 70 mass%, (C) dispersant dissolved in the (A) component: 1 to 15 mass%, (D) volatile component selected from lower alcohol and volatile oil having a boiling point of 250°C or lower: 100 ppm to 10 mass%.

Description

Technical Field

[0001] This invention relates to dispersions, methods for manufacturing the same, and cosmetic formulations thereof. It should be noted that, in this invention, compositions for use in cosmetics are referred to as cosmetics. Background Technology

[0002] To date, it is known that when a cosmetic contains powder, a dispersant is used to improve the wettability and dispersibility of the powder, thereby improving the user experience and storage stability (Patent Document 1). It is also known that by studying the structural design of the dispersant, the dispersing performance can be improved.

[0003] On the other hand, these dispersants are greatly affected by the dispersion medium, so the selection of the dispersion medium and the dispersant becomes important. For example, in cases where the compatibility with organosilicon dispersants such as highly polar oils deteriorates, it is known to obtain a well-dispersible composition by selecting an organosilicon dispersant with alkyl branches (Patent Document 2). However, the adsorption properties of the dispersant have not been studied.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: International Publication No. 2016 / 178380

[0007] Patent Document 2: International Publication No. 2017 / 199732 Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] The present invention was made in view of the above-mentioned actual situation, and its purpose is to provide a dispersion that not only has good dispersibility immediately after manufacture but also good viscosity stability (dispersion stability); and a cosmetic that can be mixed in cosmetics without compromising the good properties of the cosmetics and has excellent long-term stability.

[0010] Methods for solving problems

[0011] To achieve the above objectives, the inventors conducted in-depth research and discovered that: (A) contains a kinematic viscosity of 1–100 mm at 25°C. 2 The dispersion of the non-volatile oil, (B) powder, (C) dispersant dissolved in component (A), and (D) volatile components selected from lower alcohols and volatile oils with a boiling point below 250°C exhibits good adsorption of the dispersant powder, thus solving the above-mentioned problems and completing the present invention.

[0012] Therefore, the present invention provides the following invention.

[0013] 1. A dispersion containing the following components (A), (B), (C), and (D).

[0014] (A) Kinematic viscosity at 25°C is 1–100 mm. 2 / s of non-volatile oil: 15-65% by mass

[0015] (B) Powder: 30-70% by mass

[0016] (C) Dispersant dissolved in component (A): 1–15% by mass

[0017] (D) Volatile components selected from lower alcohols and volatile oils with a boiling point below 250°C: 100 ppm to 10 by mass.

[0018] 2. The dispersion according to 1, wherein component (B) is further dispersed by component (A) after being dispersed by components (C) and (D).

[0019] 3. The dispersion according to 1 or 2, wherein the viscosity changes by less than 250% after 2 weeks at 25°C relative to the viscosity immediately after preparation.

[0020] 4. The dispersion according to any one of 1 to 3, wherein the (A) component is selected from one or more of ester oils, phenyl organosilicones and alkyl organosilicones.

[0021] 5. The dispersion according to any one of 1 to 4, wherein the average primary particle size of component (B) is 8 to 200 nm.

[0022] 6. The dispersion according to any one of 1 to 5, wherein the (B) component is hydrophobically treated particulate titanium dioxide.

[0023] 7. The dispersion according to any one of 1 to 6, wherein the component (C) is an organosilicon surfactant.

[0024] 8. The dispersion according to any one of 1 to 7, wherein the (D) component comprises one or more selected from isododecane, undecane, tridecane, cyclopentasiloxane, disiloxane, trisiloxane, polydimethylsiloxane, and methylpolytrimethylsiloxane.

[0025] 9. A method for manufacturing a dispersion according to any one of 1 to 8, comprising:

[0026] The step of dispersing component (B) with components (C) and (D) to obtain a pre-dispersion; and

[0027] The process of mixing the pre-dispersion obtained above with component (A).

[0028] 10. A cosmetic material, wherein the dispersion according to any one of 1 to 8 is formulated.

[0029] 11. The cosmetic material according to 10, wherein the cosmetic material is an oil-in-water cosmetic material.

[0030] 12. The cosmetic according to 10 or 11 further contains (E) an organic ultraviolet absorber.

[0031] The effects of the invention

[0032] According to the present invention, a dispersion with excellent dispersibility and viscosity stability (dispersion stability) of powder can be provided, which can be compounded in cosmetics without impairing the good properties of the cosmetics, and the cosmetics have excellent long-term stability. Detailed Implementation

[0033] The present invention will be described in detail below, but it is not limited thereto. It should be noted that in the present invention, ingredient names are sometimes referred to as cosmetic designations or International Nomenclature of Cosmetic Ingredients (INCI). In cases where the cosmetic designation corresponds to the INCI, the cosmetic designation or its English name may sometimes be omitted.

[0034] [(A) Ingredient]

[0035] The component (A) of this invention has a kinematic viscosity of 1-100 mm at 25°C. 2 The non-volatile oil, with a viscosity of / s, can be used alone or in appropriate combinations of two or more. In this invention, kinematic viscosity is the value measured at 25°C using a Canon-Fensk viscometer, determined according to the method described in JIS Z 8803:2011. The kinematic viscosity ranges from 1 to 100 mm³. 2 / s (cSt: sometimes expressed as cs), preferably 1-50mm 2 / s, more preferably 1~30mm 2 / s.

[0036] In this invention, "non-volatile oil" refers to an oil with a boiling point higher than 250°C. Specifically, examples include silicone oil, hydrocarbon oil, ester oil, higher fatty acids, natural oil, and fluorinated oil. Among these, when an organic ultraviolet absorber is incorporated into the cosmetic, from the perspective of excellent compatibility, one or more of ester oil, phenyl organosilicon, and alkyl organosilicon are preferred.

[0037] Silicone oil

[0038] Examples of silicone oils include phenyl organosilicones such as phenyl polytrimethylsiloxane (INCI: PhenylTrimethicone), diphenyl polydimethylsiloxane (INCI: Diphenyl Dimethicone), and diphenylsiloxyphenyl polytrimethylsiloxane (INCI: Diphenylsiloxy PhenylTrimethicone); alkyl organosilicones such as octyl polymethylsiloxane (INCI: CaprylylMethicone); and low-viscosity polydimethylsiloxane (INCI: Dimethicone) and hydrogen polydimethylsiloxane (INCI: Hydrogen Dimethicone) with kinematic viscosities ranging from 1 to 100 mm. 2 Straight-chain or branched polydimethylsiloxanes, amino-terminated polydimethylsiloxanes (INCI: Amodimethicone), aminopropyl polydimethylsiloxanes (INCI: AminopropylDimethicone), etc. Among these, examples of commercially available silicone oils include those manufactured by Shin-Etsu Chemical Co., Ltd.: KF-4418, KF-96A-6cs, KF-56A, KF-50-100cs, etc. In addition, amino acid-modified organosilicones, fluorine-modified organosilicones, etc., can also be listed.

[0039] ·Ester oil

[0040] As an ester oil, it is a liquid oil in the form of a condensation of fatty acids with 1 to 20 carbon atoms and alcohols with 1 to 20 carbon atoms. It also contains components from plants and animals, and can be listed as monoesters or polyesters such as diesters, triesters, etc. Specifically, examples include monoisostearyl glycol esters such as diisobutyl adipate, dihexyldecyl adipate, diheptylundecyl adipate, and isostearyl isostearate; isocetyl isostearate; ethylene glycol diethylhexanoate; cetyl ethylhexanoate; triethylhexanoic acid; and trimethylolpropane triethylhexanoate. Triethylhexanoate, Oleate (INCI: Oleyl Oleate), Octyldodecyl Oleate (INCI: OctyldodecylOleate), Decyl Oleate (INCI: Decyl Oleate), Neopentyl Glycol Diethylhexanoate (INCI: Neopentyl Glycol Diethylhexanoate), Neopentyl Glycol Dicaprate (INCI: Neopentyl Glycol Dicaprate), Triethyl Citrate (INCI: Triethyl Citrate), Diethylhexyl Succinate (INCI: Diethylhexyl Succinate), Amyl Acetate (INCI: Amyl Acetate), Ethyl Acetate (INCI: Ethyl Acetate), Butyl Acetate (INCI: Butyl Acetate) Aceetate), isocetyl stearate (INCI: Isocetyl Stearate), butyl stearate (INCI: Butyl Stearate), diisopropyl sebacate (INCI: Diisopropyl Sebacate), diethylhexyl sebacate (INCI: Diethylhexyl)Sebacate), isononyl isononanoate, isotrinyl isononanoate, isotrinyl tridecyl isononanoate, coco-caprylate / caprate, caprylic / capric triglyceride, isopropyl palmitate, ethylhexyl palmitate, hexyl decyl palmitate, palmitates, and isopropyl myristate. Myristate, octyl dodecyl myristate (INCI: OctyldodecylMyristate), ethylhexyl laurate (INCI: Ethylhexyl Laurate), hexyl laurate (INCI: Hexyl Laurate), isopropyl lauroyl sarcosinate (INCI: Isopropyl Lauroyl Sarcosinate), etc.

[0041] Hydrocarbon oil

[0042] As hydrocarbon oils, examples include linear or branched non-volatile hydrocarbon oils. Specifically, examples include hydrogenated polyisobutene (INCI), squalane (INCI), and mineral oil (INCI).

[0043] Preferably, it is selected from one or more of ester oils, phenyl organosilicones, and alkyl organosilicones.

[0044] (A) The amount of component in the dispersion is 15 to 65% by mass, preferably 20 to 55% by mass, and more preferably 40 to 50% by mass. If it is less than 15% by mass, it becomes a high-viscosity dispersion, which becomes difficult to process. In addition, if it exceeds 65% by mass, sometimes a stable dispersion cannot be obtained, or the desired effect such as UV shielding effect cannot be obtained.

[0045] [(B) Component]

[0046] Component (B) of this invention is a powder. As component (B), there are no particular limitations as long as it is a raw material that can be commonly blended in cosmetics; examples include particulate metal oxide powders, coloring pigments, inorganic powders, metal powders, organic powders, and inorganic-organic composite powders. One of these can be used alone, or two or more can be appropriately combined. Details are provided below for each. Particulate powders with an average primary particle size of 8 to 200 nm are preferred, and 120 nm or less are more preferred. If the particle size is too large, the UV protection function is reduced, and white residue remains. Furthermore, the average primary particle size can be measured using a transmission electron microscope image, and is the average of 200 particles. The shape of the powder can be any shape, such as spherical, approximately spherical, rod-shaped, spindle-shaped, petal-shaped, elongated, or irregular.

[0047] • Particulate metal oxide powder

[0048] The particulate metal oxide used in this invention is selected from one or more of titanium oxide, such as particulate titanium oxide (INCI: Titanium Dioxide), iron-containing titanium oxide, zinc oxide (INCI: Zinc Oxide), cerium oxide (INCI: Cerium Oxide), and complexes thereof. These metal oxides may be composite powders with other powders. The particulate metal oxide powder is formulated to impart UV protection to the dispersion of this invention and cosmetics incorporating the dispersion. The average primary particle size is preferably 8 to 200 nm, more preferably 120 nm or less. If the particle size is larger than this range, the UV protection function is reduced, and a white residue remains.

[0049] Regarding the aforementioned particulate metal oxides, they may be untreated or have undergone surface treatments commonly used in cosmetics, without particular limitation. For example, inorganic treatments include silica coating, alumina coating, and aluminum hydroxide coating; organic treatments include silanes or silanizing agents such as triethoxycaprylylsilane, polydimethylsiloxane, hydrogen dimethylsiloxane, and triethoxysilylethyl polydimethylsiloxyethylhexyl polydimethylsiloxane. Silicone oils such as dimethicone, waxes, paraffins, perfluoroalkyl groups, and phosphates, as well as organic fluorine compounds, surfactants, amino acids such as N-acylglutamic acid, aluminum stearate, magnesium myristate, and other metallic soaps. In particular, triethoxysilylethyl polydimethylsiloxyethyl hexyldimethicone exhibits high dispersibility with both silicones and oils, making it suitable for use in sunscreens and foundations. Triethoxycaprylylsilane and metallic soap treatments are preferred considering compatibility with components (A), (C), and (D). Depending on the purpose, one or more of these surface treatments may be used in combination.

[0050] These surface-treated microparticle metal oxides are also commercially available. For example, microparticle titanium dioxide is commercially available under trade names such as STR-100C-LP, STR-100A-LP, STR-100W, STR-100W-LP, STR-100C-LF, STR-40-LP (Sakai Chemical Industry Co., Ltd.), MT-N1, MT-01, MT-05, MT-100Z, MT-100TV, MT-100AQ, MT-100WP, MTY-100SAS, MT-150EX, MT-500B, MT-505SAS, MT-700B, MT-700Z, MT-014Z, SMT-500SAS (manufactured by TAYCA Co., Ltd.), ST-455, ST-455WS, ST-457ECS, and ST-495M (manufactured by Titanium Industry). For particulate zinc oxide, the following are available: FINEX-50S-LP2, FINEX-30S-LP2, FINEX-50W, FINEX-30W, FINEX-50W-LP2, FINEX-52W-LP2, FINEX-30W-LP2, FINEX-33W-LP2, FINEX-50-LPT, FINEX-25-LPT, FINEX-50S-LPT, and FINEX-30S-LPT (Sakai Chemical Industry Co., Ltd.). These products, manufactured by TAYCA Co., Ltd., are commercially available under the following names: MZ-150, MZ-200, MZ-300, MZ-306X, MZX-303S, MZX-303M, MZX-304OTS, MZ-500HP, MZ-505T, MZX-505HPS, MZY-505M, MZ-506X, MZY-203S, MZX-203OTS, MZY-210M3S, TMZ-HA1, and MZX-5080TS (manufactured by TAYCA Co., Ltd.).

[0051] Coloring pigments

[0052] Coloring pigments are generally used for coloring cosmetics and are not particularly limited in type. Examples include red iron oxides (INCI: Iron Oxides), yellow iron oxides (INCI: Iron Oxides), white titanium dioxide (INCI: Titanium Dioxide), black iron oxides (INCI: Iron Oxides), ultramarine (INCI: Ultramarines), cyan (INCI: Ferric Ferrocyanide, Ferric Ammonium Ferrocyanide), manganese violet (INCI: Manganese Violet), cobalt titanate (INCI: Cobalt Titanium Oxide), chromium hydroxide (INCI: Chromium Hydroxide Green), chromium oxide (INCI: Chromium Oxide Greens), and aluminum / cobalt oxide (INCI: Cobalt Aluminum). Composites doped with dissimilar metals, such as titanium oxide (IRON OXIDE / TITANIUMDIOXIDO SINTER), lithium / cobalt titanate (IRON OXIDE / TITANIUMDIOXIDO SINTER), and iron oxide-doped titanium oxide (IRON OXIDE, Titanium Dioxide), as well as inorganic brown pigments such as titanium nitride (IRON Nitride), ferrous hydroxide (IRON Hydroxide), and γ-iron oxide, and inorganic yellow pigments such as loess, can also be used. These pigments can undergo surface treatment; hydrophobic treatment is preferred from a dispersibility perspective.

[0053] Furthermore, as for the shape of the coloring pigment, its geometric form is not particularly limited as long as it can impart color to the cosmetic. However, from the perspective of concealing power, pigments with a particle size, i.e., a volume average particle size, in the range of 150–600 nm are preferable. The volume average particle size can be measured using TEM or similar methods. If it is less than 150 nm, the concealing power is low, which may reduce the coloring efficiency of the cosmetic. Additionally, if it is larger than 600 nm, the user experience may sometimes be worse.

[0054] In addition, the pigments involved in this invention may be partially or completely surface-treated with inorganic compounds such as aluminum oxide (INCI: Alumina), aluminum hydroxide (INCI: Aluminum Hydroxide), silicon dioxide (INCI: Silica), and hydrated silicon dioxide (INCI: Hydrated Silica).

[0055] The hydrophobic treatment of the coloring pigment refers to the surface treatment of the aforementioned coloring pigment with a hydrophobic treatment agent. The surface hydrophobic treatment agent for the coloring pigment of the present invention is not particularly limited as long as it imparts hydrophobicity, and examples include organosilicon treatment agents, waxes, paraffins, perfluoroalkyl and phosphate organic fluorine compounds, surfactants, amino acids such as N-acylglutamic acid, aluminum stearate (INCI: Aluminum Stearate), magnesium myristate (INCI: Magnesium Myristate), and other metal soaps.

[0056] Among them, organosilicon treatment agents are preferred, including silanes or silanizing agents such as triethoxycaprylylsilane (INCI: Triethoxycaprylylsilane) or trimethoxysilyldimethicone (INCI: Trimethoxysilyl Dimethicone), polydimethylsiloxane (INCI: Dimethicone), hydrogen dimethicone (INCI: Hydrogen Dimethicone), triethoxysilylethyl polydimethylsiloxyethyl hexyl polydimethylsiloxane (INCI: Triethoxysilylethyl Polydimethylsiloxyethyl Hexyl Dimethicone), and silicone oils such as (acrylate / tridecyl acrylate / triethoxysilylpropyl methacrylate / polydimethylsiloxane methacrylate) copolymers (INCI: Acrylates / Tridecyl Acrylate / TriethoxysilylpropylMethacrylate / Dimethicone Methacrylate). Organosilicon compounds such as (acrylate / dimethicone copolymer) and (acrylate / dimethicone copolymer) (INCI: Acrylates / Dimethicone Copolymer) are preferred as organosilicon treatment agents. In particular, from the perspective that the dispersion medium for dispersing highly hydrophobic pigments exhibits high affinity even when it is a mixture of organosilicon and hydrocarbons, the following are effectively used: triethoxysilylethyl polydimethylsiloxyethyl hexyldimethicone (INCI: Triethoxysilylethyl Polydimethylsiloxyethyl HexylDimethicone) having triethoxysilyl and polydimethylsiloxyethyl and hexyl groups in the side chains of dimethyl polysiloxane. Furthermore, the above-mentioned surface hydrophobic treatment agents can be used alone or in combination of two or more.

[0057] In this invention, there are no particular limitations on the manufacturing method for surface treatment of coloring pigments by using a hydrophobicating agent, and known methods can be employed. Surface treatment methods can be broadly classified into dry methods and wet methods. As a dry method, for example, any mixer, pulverizer, blender, disperser, etc., such as a Henschel mixer, ball mill, jet mill, kneader, planetary mixer, sand mill, Atritor, belt mixer, Disper Mixer, or homogeneous mixer, can be used to mix / contact the coloring pigment used in this invention with the hydrophobicating agent to perform the treatment. At this time, energy such as heating, mechanochemical mechanical force, or superheated steam can be applied while performing the treatment. Alternatively, after the coloring pigment and the hydrophobicating agent have been thoroughly mixed / contacted, energy such as heating, mechanochemical mechanical force, or superheated steam can be applied to perform the treatment. In addition, when mixing / contacting the hydrophobic treatment agent with the coloring pigment, to improve the dispersion efficiency of the hydrophobic treatment agent, methods such as pre-dissolving or dispersing the hydrophobic treatment agent in any amount of water, solvent, or supercritical fluid, or spraying it onto the coloring pigment, can be used. As a wet process, the coloring pigment and the hydrophobic treatment agent can be dispersed, mixed / contacted in water, solvent, or supercritical fluid, and then the solvent can be evaporated. Furthermore, the treatment can be carried out by applying energy such as heating, mechanical force through mechanochemistry, or superheated steam.

[0058] Specific examples of coloring pigments that have undergone hydrophobic surface treatment include the KTP-09 series, especially KTP-09W, KTP-09R, KTP-09Y, and KTP-09B (manufactured by Shin-Etsu Chemical Industry).

[0059] Inorganic powders

[0060] As inorganic powders, examples include zirconium oxide (INCI: Zirconium Dioxide), zinc oxide (INCI: Zinc Oxide), cerium oxide (INCI: Cerium Oxide), magnesium oxide (INCI: Magnesium Oxide), barium sulfate (INCI: Barium Sulfate), calcium sulfate (INCI: Calcium Carbonate), magnesium sulfate (INCI: Magnesium Sulfate), calcium carbonate (INCI: Calcium Carbonate), magnesium carbonate (INCI: Magnesium Carbonate), talc (INCI: Talc), cleaved talc (INCI: Talc), mica (INCI: Mica), kaolin (INCI: Kaolin), sericite (INCI: Mica), and synthetic fluorophlogopite (INCI: Synthetic). Fluorphlogopite, biotite, potassium silicate, silica, fumed silica, aluminum silicate, magnesium silicate, aluminum / magnesium silicate, calcium silicate, aluminum / calcium / sodium silicate, lithium / magnesium / sodium silicate, sodium / magnesium silicate, borosilicate (calcium / aluminum silicate) Borosilicate), borosilicate (calcium / sodium) (indicated by name (INCI: Calcium Sodium))Microparticles composed of borosilicate, hydroxyapatite, bentonite, montmorillonite, hectorite, zeolite, alumina, aluminum hydroxide, boron nitride, and glass. In addition, as inorganic coloring pearl pigments, examples include pearlescent agents such as mica coated with titanium dioxide, bismuth oxychloride (INCI: Bismuth Oxychloride), bismuth oxychloride (INCI: Bismuth Oxychloride) coated with titanium dioxide (INCI: Titanium Dioxide), talc (INCI: Talc) coated with titanium dioxide (INCI: Titanium Dioxide), fish scale foil, and colored mica coated with titanium dioxide (INCI: Titanium Dioxide) are all pearl pigments. They can be untreated or have surface treatments commonly used in cosmetics, and there are no particular limitations.

[0061] Metal powder

[0062] Examples of metal powders include microparticles composed of aluminum (INCI: Aluminum Powder), copper (INCI: Copper Powder), and silver (INCI: Silver Powder).

[0063] Organic powder

[0064] Examples of organic powders include those composed of organosilicon, polyamide, polyacrylate, polyester, polyethylene, polypropylene, polystyrene, styrene-acrylic copolymer, divinylbenzene-styrene copolymer, polyurethane, vinyl resin, urea-formaldehyde resin, melamine resin, benzoguanamine, polymethylbenzoguanamine, tetrafluoroethylene, polymethyl methacrylate (e.g., polymethyl methacrylate), cellulose, silk, nylon, phenolic resin, epoxy resin, polycarbonate, etc. Specifically, examples of organosilicon include organosilicon resin particles (for instance, polymethylsilsesquioxane, INCI: Polymethylsilsesquioxane), organosilicon resin-coated silicone rubber powder (for instance, vinyldimethicone / methicone silsesquioxane crosspolymer, INCI: VinylDimethicone / Methicone Silsesquioxane Crosspolymer), diphenyldimethicone / vinyldiphenyldimethicone / silsesquioxane crosspolymer, and polysilicone-1 crosspolymer). Crosspolymer), polysilicone-22 (INCI: Polysilicone-22), etc. Additionally, metallic soaps can be listed as specific examples. Powders composed of zinc stearate (INCI: Zinc Stearate), aluminum stearate (INCI: Aluminum Stearate), calcium stearate (INCI: Calcium Stearate), magnesium stearate (INCI: Magnesium Stearate), zinc myristate (INCI: Zinc Myristate), magnesium myristate (INCI: Magnesium Myristate), sodium hexadecyl phosphate (zinc / sodium) (INCI: Sodium Zinc Cetyl Phosphate), potassium hexadecyl phosphate (INCI: Potassium Cetyl Phosphate), etc., can also be listed as specific examples. Furthermore, organic pigments can also be listed as specific examples.The following can be listed: Red 3, Red 104 (1) (representing the name (INCI: Red 28, Red 28 Lake)), Red 106, Red 201 (representing the name (INCI: Red 6)), Red 202 (representing the name (INCI: Red 7)), Red 204, Red 205, Red 220 (representing the name (INCI: Red 34)), Red 226 (representing the name (INCI: Red 30)), Red 227 (representing the name (INCI: Red 33, Red 204, Red 205, Red 220 (representing the name (INCI: Red 34))), Red 226 (representing the name (INCI: Red 30) ...).RED 33 Lake), Red 228 (name (INCI: Red 36)), Red 230 (1) (name (INCI: Red 22, Red 22 Lake)), Red 230 (2), Red 401, Red 505, Yellow 4 (name (INCI: Yellow 5)), Yellow 5 (name (INCI: Yellow 6, Yellow 6 Lake)), Yellow 202 (1) (name (INCI: Yellow 8)), Yellow 203 (name (INCI: Yellow 10, Yellow 10 Lake)), Yellow 204 (name (INCI: Yellow 11)), Yellow 401 (name (INCI:)), Blue 1 (name (INCI: Blue 1, Blue 1 Lake)), Blue 2, Blue 201, Blue 205 (name (INCI: Blue 4)), Blue 404, Green 3 (name (INCI: Green 1 Lake)) 3. Tar pigments such as Green 3 Lake, Green 201 (INCI: Green 5), Green 202 (INCI: Green 6), Green 204 (INCI: Green 8), Green 205, Orange 201 (INCI: Orange 5), Orange 203 (INCI: Pigment Orange 5), Orange 204, Orange 205 (INCI: Orange 4, Orange 4 Lake), Orange 206 (INCI: Orange 10), Orange 207 (INCI: Orange 11), Cochineal, Laccaic Acid, and Carthamus Tinctorius (Safflower) Flower are also mentioned. Natural pigments include Ginkgo biloba root extract, Lithospermum Officinale root extract, Gardenia yellow, Gardenia blue, and others.

[0065] Inorganic-organic composite powder

[0066] As an inorganic-organic composite powder, an example is a composite powder in which the surface of an inorganic powder is coated with an organic powder using a known and commonly used method.

[0067] In component (B), the preferred materials are particulate metal oxide powders that require dispersibility and coloring pigments that have been hydrophobically treated, and more preferably, hydrophobically treated particulate titanium oxide such as metal soap-treated particulate titanium oxide.

[0068] (B) The amount of the component is 30 to 70% by mass in the dispersion, preferably 40 to 70% by mass, and more preferably 40 to 60% by mass. If it is less than 30% by mass, the desired effects such as sufficient UV shielding and coloring cannot be obtained. If it is mixed at more than 70% by mass, the spreading during use may be poor, and a white or powdery appearance may be found in the cosmetic film.

[0069] [(C) Component]

[0070] The (C) component of this invention is a dispersant dissolved in the (A) component described above. As for the (C) component, it is a dispersant commonly used in cosmetics, and there is no limitation as long as it is a dispersant dissolved in the (A) component. The (C) component can be used alone or in a suitable combination of two or more.

[0071] In this invention, "dissolved in component (A)" means that when component (C) is mixed with component (A) at a concentration of 20% by mass and then left to stand at 25°C for 1 hour, a state of being without boundaries and transparent to translucent is defined as "dissolved," while a state of being cloudy and separated into two layers is defined as "not dissolved." It should be noted that, in terms of transparency, a total light transmittance of 50% or more, measured according to the method described in JIS K7361-1:1997 when filled in a 1 cm thick pool, is considered transparent to translucent.

[0072] From the perspective of dispersibility of component (A) such as ester oil and silicone oil, organosilicon surfactants are preferred. For example, one or more organosilicon compounds selected from modified organosilicon and reactive organosilicon can be used. Among these, from the perspective of dispersion effect, polyether-modified organosilicon, polyglycerol-modified organosilicon, acrylic organosilicon, and amino-modified organosilicon are preferred. Among these, from the perspective of even higher dispersion effect, acrylic organosilicon and polyglycerol-modified organosilicon are more preferred. In the case of polyglycerol-modified organosilicon, in terms of chemical structure, polyglycerol is used as the main organosilicon chain, and it can be modified in a block type or a branched type. From the perspective of maintaining the uniform dispersion of component (B) in the dispersion, a branched type is more preferred. The organosilicon main chain may have branched chains such as organosilicon chains. Specifically, examples include polyglycerol-3 polydimethylsiloxyethyl polydimethylsiloxane (INCI), lauryl polyglycerol-3 polydimethylsiloxyethyl polydimethylsiloxane (INCI), and bisbutyl polydimethylsiloxane polyglycerol-3 (INCI). Commercially available examples of polyglycerol-modified silicones include those manufactured by Shin-Etsu Chemical Co., Ltd.: KF-6105, KF-6104, KF-6106, and KF-6115. Commercially available examples of acrylic-based silicones include KP-578 manufactured by Shin-Etsu Chemical Co., Ltd. Commercially available examples of polyether-modified silicones include KF-6017, KF-6028, KF-6038, and KF-6048 manufactured by Shin-Etsu Chemical Co., Ltd.

[0073] The amount of component (C) in the dispersion is 1 to 15% by mass, preferably 3 to 15% by mass, more preferably 3 to 12% by mass, and even more preferably 5 to 10% by mass. If it is less than 1% by mass, the dispersion stability may deteriorate. Furthermore, if it exceeds 15% by mass, the orientation of component (C) in component (B) further facilitates the separation of other components (C) from other components (B). This may increase the viscosity of the dispersion or affect its dispersibility and dispersion stability.

[0074] [(D) component]

[0075] The (D) component of the present invention is a volatile component selected from lower alcohols and volatile oils with a boiling point below 250°C, and can be used alone or in combination of two or more.

[0076] As lower alcohols, they include alcohols with 1 to 4 carbon atoms, such as ethanol, propanol, isopropanol, butanol, and isobutanol.

[0077] In this invention, the term "volatile oil agent" refers to an oil agent with a boiling point below 250°C. Specifically, examples include linear (poly)siloxanes with boiling points below 250°C, such as disiloxane, trisiloxane (manufactured by Shin-Etsu Chemical Co., Ltd.: KF-96L-1cs), dimethylpolysiloxane (manufactured by Shin-Etsu Chemical Co., Ltd.: KF-96L-1.5cs, KF-96L-2cs), cyclic polysiloxanes such as cyclotetrasiloxane (D4), cyclopentasiloxane (D5) (manufactured by Shin-Etsu Chemical Co., Ltd.: KF-995), and cyclohexasiloxane (D6), branched polysiloxanes such as methyl polytrimethylsiloxane (manufactured by Shin-Etsu Chemical Co., Ltd.: TMF-1.5), undecane, isododecane, C13-15 alkanes, and C9-12 alkanes.

[0078] From a dispersibility perspective, component (D) is preferably nonpolar or low-polar. From the perspective of historical stability and feel when formulated in cosmetics, it is preferably selected from volatile components of isododecane, undecane, tridecane, cyclopentasiloxane, disiloxane, trisiloxane, polydimethylsiloxane (manufactured by Shin-Etsu Chemical Co., Ltd.: KF-96L-1.5cs, KF-96L-2cs), and methyl polytrimethylsiloxane, and preferably includes these. They can be used alone or in suitable combinations of two or more.

[0079] (D) The amount of component (D) in the dispersion is 100 ppm (by mass) to 10% by mass, preferably 100 ppm to 8.5% by mass, more preferably 100 ppm to 5% by mass, and even more preferably 100 ppm to 1.5% by mass. By making it to the above amounts, a dispersion with better dispersibility and viscosity stability (dispersion stability) of the powder is obtained.

[0080] [Dispersion]

[0081] This invention relates to a dispersion containing the aforementioned components (A), (B), (C), and (D), specifically a dispersion that disperses the powder of component (B). The total mass percentage of components (A) to (D) in the dispersion is preferably 98-100% by mass, more preferably 99-100% by mass, and most preferably 100% by mass with substantially no optional components mixed in. Optional components include antioxidants and water. From the perspective of historical stability and properties when mixed in cosmetics, a dispersion in which component (B) is further dispersed with component (A) after being dispersed with components (C) and (D) is preferred.

[0082] The dispersion can be a liquid or a paste. There is no particular limitation on the initial viscosity at 25°C immediately after manufacturing. When using a media-stirred mill such as a bead mill, a viscosity of less than 1000 mPa·s is preferred from the perspective of ease of bead filtration and ease of mixing in cosmetics. Furthermore, from the perspective of user experience, a viscosity of less than 750 mPa·s is more preferred, and less than 500 mPa·s is even more preferred. There is no particular limitation on the lower limit; by setting it to 100 mPa·s or higher, it is easier to suppress the separation of concentrations in the dispersion. It should be noted that, regarding the viscosity measurement conditions, a type B viscometer is used, and the viscosity is expressed, for example, after 60 seconds at a spindle speed of LV-2, 30 rpm. There is also no particular limitation on the hardness of the paste-like dispersion, but when using a three-roll mill, a hardness of 100 or less is preferred from the perspective of ease of handling. Furthermore, from the perspective of ease of mixing in cosmetics, a hardness of less than 80 is more preferred, and less than 50 is even more preferred. There is no specific limitation on the lower limit; by setting it above 5, it is easier to suppress the separation of concentrations in the dispersion. It should be noted that hardness is expressed using a rheometer such as the Rheometer RT-2002D·D (manufactured by Rheo Tech co., Ltd., measuring terminal: 10mm). The values ​​measured were as follows: needle depth: 10 mm, sample stage rising speed: 5 cm / min, temperature: 25℃, range: 200.

[0083] To maintain the stability of the cosmetic containing the dispersion, it is preferable that the viscosity change rate of the dispersion after 2 weeks at 25°C, relative to the viscosity immediately after preparation, is less than 250%. This viscosity change rate is as described in the examples. More preferably, the viscosity change rate at 25°C after 2 weeks is less than 200%, further preferably less than 160%, and particularly preferably less than 140%. There is no particular limitation on the lower limit of the change rate; it can also be set to 40% or more, 80% or more, or 90% or more. It should be noted that the viscosity of the dispersion at 25°C after 2 weeks is preferably 40 mPa·s or more and less than 2500 mPa·s, more preferably 80 to 2000 mPa·s.

[0084] <Methods for manufacturing dispersions>

[0085] The dispersion of the present invention can be manufactured using known methods. In particular, from the perspective of the adsorption of component (C) to component (B), a manufacturing method is preferred that includes a step of dispersing component (B) with the aforementioned components (C) and (D) to obtain a pre-dispersion, and a step of mixing the obtained pre-dispersion with component (A). As the step of mixing the obtained pre-dispersion with component (A), examples of steps (I), (II), or (III) described below can be cited.

[0086] (I) A manufacturing method comprising the steps of adding component (A), or a mixed solvent of component (A) and component (D) to the pre-dispersion, further dispersing the pre-dispersion, and adjusting the mixing ratio as described above.

[0087] (II) A manufacturing method comprising the steps of mixing the pre-dispersion and component (A), reducing pressure, heating, and volatilizing component (D), and adjusting the mixing ratio as described above.

[0088] (III) A manufacturing method in which components (A) and (C), or a mixture of components (A), (C) and (D) in a pre-dispersion solvent, are further dispersed and adjusted to the mixing ratio described above.

[0089] Furthermore, it is also possible to mix component (D) with component (A) after the component (D) has evaporated. In order to obtain a dispersion with better dispersibility, the above method is preferred.

[0090] As dispersion methods, various types of mixers can be used, such as Henschel mixers, ball mills, kneaders, planetary mixers, belt mixers, disper mixers, homogeneous mixers, jet mills, roller mills, bead mills, high-pressure dispersers, and any type of agitator, pulverizer, mixer, media mixer, rotary mixer, and disperser. In particular, from the viewpoint of mixing efficiency, bead mills and high-pressure dispersers are preferred for dispersion.

[0091] [Cosmetic Ingredients]

[0092] The present invention provides cosmetics formulated with the above-described dispersion. The amount of dispersion in the cosmetic is suitably selected from 0.5% to 60% by mass, preferably 5% to 31% by mass.

[0093] This invention applies to various cosmetics, preferably skincare cosmetics, makeup cosmetics, antiperspirant cosmetics, UV protection cosmetics, and other cosmetics for external use on the skin, as well as hair cosmetics and nail cosmetics. Examples of skincare cosmetics include toners, lotions, creams, cleansing balms, masks, oils, massage products, beauty serums, beauty oils, cleansers, deodorants, hand creams, lipsticks, and concealers. Examples of makeup cosmetics include makeup bases, foundations, concealers, powders, blushes, eyeshadows, mascaras, eyeliners, eyebrow pencils, and lipsticks. Examples of antiperspirant cosmetics include roll-on, cream, solution, and stick types. Examples of UV protection cosmetics include sunscreen oils, sunscreen lotions, sunscreen creams, and formulations that impart sun protection effects to the aforementioned makeup cosmetics. Examples of hair cosmetics include shampoos, conditioners, hair treatments, styling products, hair dyes, and hair perfumes.

[0094] The cosmetic material of the present invention can be in the form of, for example, powder, oily liquid, non-aqueous, oil-in-water, water-in-oil emulsion, or multiple emulsions such as W / O / W or O / W / O. Furthermore, the shape of the cosmetic material of the present invention can be various, including liquid, emulsion, cream, solid, paste, gel, powder, pressed, multilayer, mousse, spray, stick, and pencil forms. In particular, water-in-oil cosmetic materials generally have difficulty dispersing powder, thus further enhancing the effectiveness of the present invention.

[0095] [(E) component]

[0096] The cosmetics of the present invention may contain ingredient (E): an organic ultraviolet absorber. Examples of ingredients (E) are given below, but there are no limitations as long as they are generally usable in cosmetics. These can be used alone or in appropriate combinations of two or more.

[0097] Specifically, examples include benzophenone-1 (INCI: Benzophenone-1), benzophenone-2 (INCI: Benzophenone-2)), benzophenone-3 (INCI: Benzophenone-3)), benzophenone-4 (INCI: Benzophenone-4)), benzophenone-5 (INCI: Benzophenone-5)), benzophenone-6 (INCI: Benzophenone-6)), benzophenone-9 (INCI: Benzophenone-9)), humosalicylate (INCI), octocrylene (INCI), tert-butylmethoxydibenzoylmethane (INCI: Butyl Methoxydibenzoylmethane) and ethylhexyl salicylate (INCI: Ethylhexyl Salicylate), Diethylaminohydroxybenzoylhexyl benzoate (INCI: Diethylamino Hydroxybenzoyl Hexyl Benzoate), Polysiloxane-15 (INCI), Ethylhexyl Dimethoxybenzylidene Dioxoimidazolidine Propionate (INCI: Ethylhexyl Dimethoxybenzylidene Dioxoimidazolidine Propionate), Terephthalylidene Dicamphor Sulfonic Acid (INCI: Terephthalylidene Dicamphor Sulfonic Acid), Ethylhexyl Triazine (INCI), Isopentyl Trimethoxycinnamate Trisiloxane (INCI: Isopentyl Trimethoxycinnamate Trisiloxane), Cresoltrazol Trisiloxane (INCI), Ethylhexyl Dimethyl PABA (INCI: Ethylhexyl Dimethyl PABA), isopropyl methoxycinnamate (INCI: Isopropyl Methoxycinnamate), ethylhexyl methoxycinnamate (INCI: EthylhexylMethoxycinnamate), bis(ethylhexyl)oxyphenol methoxyphenyltriazine (INCI), phenylbenzimidazole sulfonic acid (INCI: Phenylbenzimidazole sulfonic acid)Acid), methylene bisbenzotriazolyl tetramethyl butylphenol (INCI), glyceryl ethylhexanoate dimethoxycinnamate (INCI), glyceryl PABA (INCI), diisopropyl methyl cinnamate (INCI), cinnamate (INCI), ethylhexyl dimethoxybenzylidene dioxoimidazolidine propionate (INCI), etc. In addition, UVA absorbers (such as diethylaminohydroxybenzoyl hexyl benzoate, etc.) can be used in combination with UVB absorbers (such as ethylhexyl methoxycinnamate, etc.), or they can be combined arbitrarily.

[0098] When organic ultraviolet absorbers are included, there is no particular limitation on their mixing amount. Preferably, it is 0.5 to 30% by mass of the total cosmetic, more preferably 3 to 25% by mass, and even more preferably 5 to 20% by mass. If it exceeds 30% by mass, the cosmetic may feel heavy or become a highly irritating cosmetic. In addition, since the dispersion of the present invention has excellent compatibility with organic ultraviolet absorbers, the effects of the present invention are further enhanced if the concentration is 0.5% by mass or more. In cosmetics containing the dispersion of the present invention, in particular, when the concentration of organic ultraviolet absorbers in the oil phase is high, for example, even if it is 8% by mass or more, 10% by mass or more, or 15% by mass or more of the total cosmetic, a cosmetic with high stability can be prepared.

[0099] The cosmetics of the present invention can contain various ingredients commonly used in cosmetics without impairing the effects of the present invention. For example, they may contain (1) an oil, (2) an aqueous component, (3) a surfactant, (4) a powder, (5) a composition consisting of a cross-linked organopolysiloxane and an oil that is liquid at room temperature, (6) a film-forming agent, (7) an ultraviolet absorbing and scattering agent, and (8) other additives. These can be used alone or in appropriate combinations of two or more. Furthermore, the components contained in the above dispersion can be blended. However, without blending the dispersion of the present invention, even if components (A) to (D) of the present invention are blended, the significant effects of the present invention cannot be obtained. Furthermore, with regard to the dispersion of the present invention, powders such as coloring pigments and particulate powders that are difficult to disperse in cosmetics can be easily dispersed. Therefore, it is also possible to make the blending amount of component (C) in a cosmetic that does not include component (C) in the dispersion 0 to 8% by mass, 0.1 to 5% by mass, and 0.1 to 3% by mass.

[0100] (1) Oil

[0101] The cosmetics of the present invention can be formulated with other oils not classified as components (A) or (D) above. These oils may be volatile or non-volatile, and may be solid, semi-solid, or liquid at room temperature (25°C). Examples include silicone oils, organosilicon waxes, natural animal and plant oils and semi-synthetic oils, hydrocarbon oils, higher alcohols, fatty acids, ester oils, and fluorinated oils.

[0102] Silicone oil

[0103] As silicone oils, examples include alkyl-modified organosilicones such as dimethylpolysiloxane (INCI), trisiloxane (INCI), methylpolytrimethylsiloxane (INCI), ethyltrisiloxane (INCI), ethylpolymethylsiloxane (INCI), and hexylpolydimethylsiloxane (INCI); long-chain alkyl-modified organosilicones such as octylpolymethylsiloxane (INCI); medium to high viscosity linear or branched organopolysiloxanes such as phenylpolytrimethylsiloxane (INCI), diphenylpolydimethylsiloxane (INCI), diphenylsiloxyphenylpolytrimethylsiloxane (INCI), tetraphenyldimethyldisiloxane (INCI), and methylhydropolysiloxane; and cyclotetrasiloxane (INCI). I), cyclic organopolysiloxanes such as cyclopentasiloxane (INCI) and cyclohexasiloxane (INCI), amino-modified organopolysiloxanes such as amino-terminated polydimethylsiloxane (INCI) and aminopropyl polydimethylsiloxane (INCI), pyrrolidone-modified organopolysiloxanes such as PCA polydimethylsiloxane (INCI), pyrrolidone carboxylic acid-modified organopolysiloxanes, high-polymerization degree viscous dimethylpolysiloxanes, viscous amino-modified organopolysiloxanes, viscous dimethylsiloxane-methylphenylsiloxane copolymers and other silicone rubbers, and low-viscosity organopolysiloxane solutions of organosilicon adhesives or organosilicon rubbers, amino acid-modified organosilicon, fluorine-modified organosilicon, organosilicon resins and organosilicon resin solutions, etc.

[0104] Examples of commercially available silicone oils include those manufactured by Shin-Etsu Chemical Co., Ltd.: KF-96L-1cs, KF-96L-1.5cs, KF-96L-2cs, KF-96A-6cs, TMF-1.5, KF-4422, KF-4418, KF-56A, KF-995, KF-54, KF-54HV, etc.

[0105] • Solid oily components

[0106] In this invention, when it is desired to solidify the cosmetic, it is preferable to incorporate an oily component that is solid at 25°C. As the oily component that is solid at 25°C, it is preferable to have an oily component with a melting point of 40°C or higher, more preferably 60 to 110°C. Examples include waxes, hydrocarbons, esters, higher alcohols, and higher fatty acids; there are no particular limitations as long as the raw material can be commonly incorporated into cosmetics. Specifically, examples include carnauba wax (INCI: Copernicia Cerifera (Carnauba) Wax), sugarcane wax, candelilla wax (INCI: Euphorbia Cerifera (Candelilla) Wax), refined candelilla wax, rice wax, wood wax, jojoba wax, kapok wax, rice bran wax, bayberry wax, shea butter, cocoa butter, rhus succedanea fruit wax (INCI: Rhus succedanea Fruit Wax), lignite wax (INCI: Montan Wax), hydrogenated castor oil with isostearate, and other plant-based waxes; beeswax, tallow, beef tallow, lard (INCI: Lard), and horse tallow (INCI: Horse tallow). Animal waxes such as fat, lanolin, lanolin (INCI: Lanolin), scale insect wax, purple insect glue wax, and whale wax; semi-synthetic waxes such as lanolin esters, lanolin fatty acid esters, and beeswax esters; hardened oils such as hardened castor oil and hardened coconut oil; hydrocarbon waxes such as solid paraffin wax, polyethylene wax, refined cereswax, crude cereswax, and microcrystalline wax; wax esters such as synthetic beeswax; amino acid stearyl alcohol esters such as lauroyl glutamic acid dioctyl dodecyl ester, lauroyl glutamic acid dioctyl dodecyl ester, lauroyl glutamic acid dioctyl dodecyl ester; fatty acids such as stearic acid and bezoar acid; and organosilicon waxes such as acrylic-organosilicon grafted or block copolymers of acrylic-organosilicon resins (manufactured by Shin-Etsu Chemical Industry Co., Ltd.: acrylic-organosilicon graft copolymers: KP-561P, 562P, etc.), or derivatives thereof, preferably selected from one or more of them.

[0107] • Natural animal and vegetable oils and semi-synthetic oils

[0108] Examples of natural and semi-synthetic oils include avocado oil (INCI: Persea Gratissima (Avocado) Oil), flaxseed oil (INCI: Linum Usitatissimum (Linseed) Seed Oil), almond oil (INCI: Prunus Amygdalus Dulcis (Sweet Almond) Oil), perilla oil, olive oil (INCI: Olea Europaea (Olive) Fruit Oil), California torreya oil (INCI: Torreya Californica (California Nutmeg) Oil), citronella oil (INCI: Cymbopogon Nardus (Citronella) Oil), torreya seed oil (INCI: Torreya Nucifera Seed Oil), and almond oil (INCI: Kyounin). Yu), wheat germ oil (INCI: Triticum Vulgare (Wheat) Germ Oil), sesame oil (INCI: Sesamum Indicum (Sesame) Seed Oil), rice germ oil (INCI: Oryza Sativa (Rice) Germ Oil), rice bran oil (INCI: Oryza Sativa (Rice) Bran Oil), camellia oil (INCI: Camellia Kissi Seed Oil), safflower oil (INCI: Carthamus Tinctorius (Safflower) Seed Oil), soybean oil (INCI: Glycine Soja (Soybean) Oil), tea seed oil (INCI: Camellia Sinensis Seed Oil), camellia seed oil (INCI: Camellia Japonica Seed Oil), evening primrose oil (INCI: Oenothera Biennis) (Evening Primrose) Oil), rapeseed oil (name indicated), corn germ oil (name indicated (INCI: Zea Mays (Corn) Germ Oil)), etc. germ oils,Peach kernel oil (name indicated), palm oil (name indicated (INCI: Elaeis Guineensis (Palm) Oil)), palm kernel oil (name indicated (INCI: Elaeis Guineensis (Palm) Kernel Oil)), castor oil (name indicated (INCI: Ricinus Communis (Castor) Seed Oil)), sunflower seed oil (name indicated (INCI: Helianthus Annuus (Sunflower) Seed Oil)), grape seed oil (name indicated (INCI: Vitis Vinifera (Grape) Seed Oil)), jojoba seed oil (name indicated (INCI: Simmondsia Chinensis (Jojoba) Seed Oil)), macadamia seed oil (name indicated (INCI: Macadamia Ternifolia Seed Oil)), meadowfoam seed oil (name indicated (INCI: Limnanthes Alba (Meadowfoam) Seed Oil)), cottonseed oil (name indicated (INCI: Gossypium Herbaceum)). Natural plant oils such as Cotton Seed Oil, Coconut Oil (INCI: Cocos Nucifera (Coconut) Oil), and Peanut Oil (INCI: Arachis Hypogaea (Peanut) Oil); natural animal oils such as Shark Liver Oil (INCI: Shark Liver Oil), Cod Liver Oil (INCI: Cod Liver Oil), Fish Liver Oil (INCI: Fish Liver Oil), Turtle Oil (INCI: Turtle Oil), Mink Oil (INCI: Mink Oil), and Egg Oil (INCI: Egg Oil); and semi-synthetic oils such as Hydrogenated Coconut Oil (INCI: Hydrogenated Coconut Oil) and Liquid Lanolin Oil (INCI: Lanolin Oil).

[0109] Hydrocarbon oil

[0110] As hydrocarbon oils, examples include linear or branched non-volatile hydrocarbon oils. Specifically, examples include olefin oligomers (INCI), (C13, 14) isoalkanes (INCI), isoalkanes such as isododecane (INCI), undecane (INCI), dodecane (INCI), isohexadecane (INCI), hydrogenated polyisobutene (INCI), squalane (INCI), mineral oil (INCI), coconut alkane (INCI), (C13-15) alkanes (INCI), and other alkanes.

[0111] Higher alcohols

[0112] As higher alcohols, examples include lauryl alcohol (INCI), hexyldecyl alcohol (INCI), oleyl alcohol (INCI), isostearyl alcohol (INCI), octyldodecyl alcohol (INCI), decyltetradecyl alcohol (INCI), myristyl alcohol (INCI), cetyl alcohol (INCI), stearyl alcohol (INCI), betaine alcohol (INCI), and squalene alcohol (INCI), which are straight-chain saturated alcohols with more than 6 carbon atoms, as well as squalene (INCI). Additionally, examples include cholesterol (INCI), sitosterol (INCI: Beta-Sitosterol), phytosterols (INCI), lanosterol (INCI), and other sterols.

[0113] ·Ester oil

[0114] Examples of ester oils include diisobutyl adipate, dihexyldecyl adipate, diheptylundecyl adipate, isostearyl isostearate, and other monoisostearic acid alkyl glycol esters; isocetyl isostearate, trimethylolpropane triisostearate, ethylene glycol diethylhexanoate, cetyl ethylhexanoate, and trimethylolpropane triethylhexanoate. Octyl dodecyl esters, such as triethylhexanoate, pentaerythrityl tetraethylhexanoate (INCI: Pentaerythrityl Tetraethylhexanoate), and octyl dodecyl stearate (INCI: Octyldodecyl Stearoyl Stearate), are also available.Oleate (INCI: Oleyl Oleate), Octyldodecyl oleate (INCI: Octyldodecyl Oleate), Decyl oleate (INCI: Decyl Oleate), Neopentyl hexanoate (INCI: Neopentyl Glycol Diethylhexanoate), Neopentyl dicaprate (INCI: Neopentyl Glycol Dicaprate), Diisostearyl malate (INCI: Diisostearyl Malate), Triethyl citrate (INCI: Triethyl Citrate), Diethylhexyl succinate (INCI: Diethylhexyl Succinate), Amyl acetate (INCI: Amyl Acetate), Ethyl acetate (INCI: Etyl Acetate), Butyl acetate (INCI: Butyl Acetate) Acetate), Isocetyl stearate (INCI: Isocetyl Stearate), Butyl stearate (INCI: Butyl Stearate), Diisopropyl sebacate (INCI: Diisopropyl Sebacate), Diethylhexyl sebacate (INCI: Diethylhexyl Sebacate), Cetyl lactate (INCI: Cetyl Lactate), Myristyl lactate (INCI: Myristyl Lactate), Isononyl isononanoate (INCI: Isononyl Isononanoate), Isotridecyl isononanoate (INCI: Isotridecyl Isononanoate), Isopropyl palmitate (INCI: Isopropyl Palmitate), Ethylhexyl palmitate (INCI: Ethylhexyl Isopalmitate), hexyl decyl palmitate (INCI: Isocetyl Palmitate, Hexyldecyl Palmitate), and other palmitate esters,Cholesteryl hydroxystearate, isopropyl myristate, octyl dodecyl myristate, myristyl myristate, and other myristate esters; ethylhexyl laurate, hexyl laurate, dioctyl dodecyl lauroyl glutamate, and isopropyl lauroyl sarcosinate. Lauroyl Sarcosinate), (caprylic / capric) coconut alkyl ester (INCI: Coco-Caprylate / Caprate), diisostearyl malate (INCI: Diisostearyl Malate), phytosteryl isostearate (INCI: Phytosteryl Isostearate), di(phytosteryl / Octyldodecyl) ester of lauroyl glutamate (INCI: Phytosteryl / Octyldodecyl Lauroyl Glutamate), diesters of linolenic acid, phytosterols, and higher alcohols, etc.

[0115] In addition, among ester oils, glyceryl ester oils include triglyceride (INCI), triglyceride (INCI: Caprylic / Capric Triglyceride), coconut oil glyceride (INCI), triglyceride (INCI: Caprylic / Capric / Succinic Triglyceride), and glyceride (INCI: Caprylic / Capric Glycerides).

[0116] Fluorinated oils

[0117] Examples of fluorinated oils include perfluorodecahydronaphthalene (INCI), perfluorononylpolydimethylsiloxane (INCI), and perfluoromethylcyclopentane (INCI).

[0118] (2) Aqueous components

[0119] There are no particular limitations on the aqueous components, as long as they are aqueous components that can be mixed in common cosmetics. Specifically, examples include water, ethanol (INCI: Alcohol), isopropyl alcohol (INCI: Isopropyl Alcohol), and other lower alcohols with preferably 2 to 5 carbon atoms, as well as sugar alcohols such as sorbitol (INCI), maltose (INCI), and xylitol (INCI). Additionally, examples include BG (Index: Butylene Glycol), PG (Index: Propylene Glycol), DPG (Index: Dipropylene Glycol), pentanediol (Index), 1,10-decanediol (Index), octanediol (Index), 1,2-hexanediol (Index), erythritol (Index), glycerol (Index), diglycerol (Index), polyethylene glycol, and other polyols; glucose (Index), glycerol glucoside (Index), betaine (Index), and sodium chondroitin sulfate (Index: Sodium Chondroitin). Sulfate), PCA-Na (indicating name (INCI: SodiumPCA)), Methyl glucetol polyether-10 (INCI), Methyl glucetol polyether-20 (INCI), Hyaluronic acid, Egg yolk lecithin, Soy lecithin, Phosphatidylcholine, Phosphatidylethanolamine, Phosphatidylserine, Phosphatidylglycerol, Phosphatidylinositol, Sphingolipids and other moisturizers.

[0120] (3) Surfactants

[0121] As surfactants, there are nonionic, anionic, cationic, and amphoteric surfactants, but there are no particular limitations; any surfactant commonly used in cosmetics can be used. Among these surfactants, since a stable cosmetic can be obtained, it is preferable to select one or more non-crosslinked silicone surfactants or crosslinked silicone surfactants. In all cases, the amount of surfactant in the formulation is preferably 0.1% to 20% by mass of the total cosmetic. If it is 0.1% or more, the dispersing and emulsifying functions can be fully exerted; if it is 20% or less by mass, there is no need to worry about the cosmetic becoming sticky, so it is preferred. There is no limitation on the HLB of the surfactant; from the perspective of maintaining the water resistance of the cosmetic, 2% to 14.5% is preferred.

[0122] As a non-crosslinked organosilicon surfactant, it is a product formed by replacing part of the methyl group of a linear or branched organosilicon backbone with hydrophilic groups such as polyethylene glycol and polyglycerol. Specifically, it is preferably a linear or branched polyoxyethylene-modified organopolysiloxane, a linear or branched polyoxyethylene-polyoxypropylene-modified organopolysiloxane, a linear or branched polyoxyethylene-alkyl co-modified organopolysiloxane, a linear or branched polyoxyethylene-polyoxypropylene-alkyl co-modified organopolysiloxane, a linear or branched polyglycerol-modified organopolysiloxane, a linear or branched polyglycerol-alkyl co-modified organopolysiloxane, or a linear or branched pyrrolidone-modified organopolysiloxane. Examples include PEG-11 methyl ether dimethyl polysiloxane (INCI), PEG / PPG-20 / 22 butyl ether dimethyl polysiloxane (INCI), PEG-3 dimethyl polysiloxane (INCI), PEG-10 dimethyl polysiloxane (INCI), PEG-9 polydimethylsiloxyethyl dimethyl polysiloxane (INCI), lauryl PEG-9 polydimethylsiloxyethyl dimethyl polysiloxane (INCI), cetyl PEG / PPG-10 / 1 dimethyl polysiloxane (INCI), polyglycerol-3 disiloxane dimethyl polysiloxane (INCI), polyglycerol-3 polydimethylsiloxyethyl dimethyl polysiloxane (INCI), lauryl polyglycerol-3 polydimethylsiloxyethyl dimethyl polysiloxane (INCI), and dibutyl dimethyl polysiloxane polyglycerol-3 (INCI).

[0123] Examples of commercially available products include those manufactured by Shin-Etsu Chemical Co., Ltd.: KF-6011, KF-6011P, KF-6012, KF-6015, KF-6017, KF-6043, KF-6028, KF-6038, KF-6048, KF-6100, KF-6104, KF-6106, KF-6105, KF-6115, KF-6180, etc.

[0124] Crosslinked silicone surfactants include crosslinked polyether modified silicones such as (dimethylpolysiloxane / (PEG-10 / 15)) crosslinked polymer (INCI), (PEG-15 / lauryl dimethylpolysiloxane) crosslinked polymer (INCI), (PEG-10 / lauryl dimethylpolysiloxane) crosslinked polymer (INCI), (PEG-15 / lauryl polydimethylsiloxyethyl dimethylpolysiloxane) crosslinked polymer (INCI), and (polydimethylsiloxane / polyglycerol-3) crosslinked polymer (INCI), (lauryl polydimethylsiloxane / polyglycerol-3) crosslinked polymer (INCI), and (polyglycerol-3 / lauryl polydimethylsiloxyethyl polydimethylsiloxane) crosslinked polymer (INCI).

[0125] Furthermore, when using a cross-linked silicone surfactant, in a composition consisting of the cross-linked silicone surfactant and an oil that is liquid at room temperature, it is preferable that the cross-linked silicone surfactant swells relative to the liquid oil, including more than its own weight in the liquid oil.

[0126] As the liquid oil, the following can be used as optional components: (1) liquid silicone oil, hydrocarbon oil, ester oil, natural animal and vegetable oil, semi-synthetic oil, fluorinated oil, etc., for example, cyclopentasiloxane (INCI), dimethyl polysiloxane (INCI), mineral oil (INCI), isododecane (INCI), isohexadecane (INCI), glyceryl tri(ethylhexanoate) ester (INCI), isotridecyl isononanoate (INCI: Isotridecyl Isononanoate), squalane (INCI), etc.

[0127] Examples of commercially available cross-linked silicone surfactants that swell due to the presence of liquid oils include those manufactured by Shin-Etsu Chemical Co., Ltd.: KSG-210, KSG-240, KSG-270, KSG-310, KSG-320, KSG-330, KSG-340, KSG-320Z, KSG-350Z, KSG-710, KSG-790, KSG-810, KSG-820, KSG-830, KSG-840, KSG-820Z, KSG-850Z, etc.

[0128] (4) Powder

[0129] In addition to being used as a dispersion in the above-mentioned formulations, powders can also be used. Alternatively, they can be used as other dispersions in cosmetics. Specific examples of dispersions formed by pre-dispersing particles that absorb and scatter ultraviolet light in an oil-based agent include the SPD series (trade names) manufactured by Shin-Etsu Chemical Co., Ltd., particularly SPD-T5, T5L, Z5, Z5L, T6, Z6, T7, and Z7L.

[0130] The preferred amount of powder, other than the dispersion, in the cosmetic is 0.5 to 90% by mass, more preferably 1 to 30% by mass, and even more preferably 5 to 20% by mass.

[0131] (5) A composition consisting of a cross-linked organopolysiloxane and an oil that is liquid at room temperature.

[0132] In a composition consisting of a cross-linked organopolysiloxane and an oil that is liquid at room temperature, it is preferable that the cross-linked organopolysiloxane swells relative to the liquid oil, which contains more than its own weight in the liquid oil. As the liquid oil, optional components (1) of the oil can be liquid silicone oil, hydrocarbon oil, ester oil, natural animal and vegetable oil, semi-synthetic oil, fluorinated oil, etc., for example, cyclopentasiloxane (INCI), dimethyl polysiloxane (INCI), mineral oil (INCI), isododecane (INCI), isohexadecane (INCI), triglyceride (ethylhexanoate) (INCI), isotridecyl isononanoate (INCI: Isotridecyl Isononanoate), squalane (INCI), etc.

[0133] (5) The cross-linked silicone surfactants that are different from those in (3) above are compounds that do not have polyether or polyglycerol structures in their molecular structure. Specific examples include (dimethyl polysiloxane / vinyl dimethyl polysiloxane) cross-linked polymer (INCI), (dimethyl polysiloxane / phenyl vinyl dimethyl polysiloxane) cross-linked polymer (INCI), (vinyl dimethyl polysiloxane / lauryl dimethyl polysiloxane) cross-linked polymer (INCI), (lauryl polydimethylsiloxyethyl dimethyl polysiloxane / bisvinyl dimethyl polysiloxane) cross-linked polymer (INCI), etc.

[0134] Examples of commercially available compositions consisting of cross-linked organopolysiloxanes and oils that are liquid at room temperature include those manufactured by Shin-Etsu Chemical Co., Ltd.: KSG-15, KSG-1510, KSG-16, KSG-1610, KSG-19, KSG-016F, KSG-18A, KSG-41A, KSG-42A, KSG-43, KSG-44, KSG-45, KSG-042Z, KSG-045Z, KSG-048Z, etc.

[0135] (6) Film-forming agent

[0136] The film-forming agent is mainly formulated to further maintain the lasting effect of the cosmetic. While there are no particular limitations, from the viewpoint of imparting water repellency, a silicone-based composition is preferred. Specifically, trimethylsiloxysilicic acid, acrylic-based silicone film-forming agents, silicone-modified norbornene, silicone-modified amylopectin, silicone-modified polyvinyl alcohol, etc., can be used.

[0137] Examples of film-forming agents for organosilicon compositions include trimethylsiloxysilicic acid (INCI: Trimethylsiloxysilicate), (acrylate / dimethylpolysiloxane) copolymer (INCI), (norbornene / tri(trimethylsiloxy)silylnorbornene) copolymer (INCI), and tri(trimethylsiloxy)silylpropylcarbamoyl amylopectin (INCI: TrimethylsiloxysilylcarbamoylPullulan), etc.

[0138] The film-forming agent can be dissolved in a liquid oil at room temperature and then mixed into the cosmetic. As the liquid oil, liquid silicone oil, hydrocarbon oil, ester oil, natural animal and vegetable oil, semi-synthetic oil, etc., or fluorinated oil can be used as optional components (1) of the oil.

[0139] Specific examples of commercially available silicone film-forming agents include those manufactured by Shin-Etsu Chemical Co., Ltd.: KF-7312J, KP-545, KP-549, KP-543, NBN-30-ID, TSPL-30-ID, TSPL-30-D5, etc.

[0140] (7) Ultraviolet absorbing and scattering agents

[0141] Examples of ultraviolet (UV) absorbing and scattering agents include particulate titanium dioxide, particulate iron-containing titanium dioxide, particulate zinc oxide, particulate cerium oxide, and their composites. Particles that absorb and scatter UV light can also be used, and dispersions formed by pre-dispersing these UV-absorbing and scattering particles in an oil can also be used. As an oil, optional components include (1) liquid silicone oil, hydrocarbon oil, ester oil, natural animal and vegetable oils, semi-synthetic oils, and fluorinated oils. Specific examples of dispersions formed by pre-dispersing UV-absorbing and scattering particles in an oil include Shin-Etsu Chemical Co., Ltd.'s SPD series (trade names), particularly SPD-T5, T5L, Z5, Z5L, T6, Z6, T7, and Z7L.

[0142] (8) Other additives

[0143] Other additives include oil-soluble gelling agents, preservatives / bactericides, antiperspirants, fragrances, salts, antioxidants, pH adjusters, chelating agents, cooling agents, anti-inflammatory agents, skin care ingredients (whitening agents, cell activators, skin roughness improvers, blood circulation promoters, skin astringents, anti-seborrheic agents, etc.), vitamins, amino acids, nucleic acids, hormones, inclusion complexes, etc.

[0144] Oil-soluble gelling agents

[0145] Examples of oil-soluble gelling agents include metal soaps such as aluminum stearate, magnesium stearate, and zinc myristate; amino acid derivatives such as lauroyl glutamate and α,γ-di-n-butylamine; dextrin palmitate, dextrin isostearate, dextrin myristate, stearoyl inulin, and dextrin (palmitic acid / ethylhexanoic acid) esters. Palmitate / Ethylhexanoate and other dextrin fatty acid esters; sucrose palmitate, sucrose stearate and other sucrose fatty acid esters; fructooligosaccharide stearate, fructooligosaccharide 2-ethylhexanoate and other fructooligosaccharide fatty acid esters; benzylidene sorbitol monobenzylidene sorbitol, dibenzylidene sorbitol and other benzylidene derivatives of sorbitol; distearate dimethylammonium lithium montmorillonite (INCI), silachlor ammonium lithium montmorillonite (INCI), and organically modified clay minerals of lithium montmorillonite; silachlor...

[0146] Ammonium bentonite (INCI), etc.

[0147] Preservatives / bactericides

[0148] Examples of preservatives / bactericides include alkyl p-hydroxybenzoate, benzoic acid, sodium benzoate, sorbic acid, potassium sorbate, phenoxyethanol, imidazolidinyl urea, salicylic acid, isopropyl methylphenol, carbolic acid, p-chloro-m-cresol, styraxanol, benzalkonium chloride, chlorhexidine chloride, triclocarban, iodopropynyl butylcarbamate, polylysine, photosensitizers, silver, and plant extracts.

[0149] Antiperspirant

[0150] Examples of antiperspirants include hydroxyaluminum halides such as aluminum chlorohydroxyaluminate, aluminum halides such as aluminum chloride, allantoin aluminum salts, tannic acid, persimmon tannin, potassium aluminum sulfate, zinc oxide, zinc p-phenolsulfonate, roasted alum, aluminum tetrachloride (aluminum / zirconium) hydrate, and trichlorohydroxy(aluminum / zirconium)glycine. In particular, as ingredients exhibiting high efficacy, aluminum hydroxyhalides, aluminum halides, and their complexes or mixtures of zirconium oxyhalide and zirconium oxyhydroxyhalide (e.g., aluminum tetrachloride (aluminum / zirconium) hydrate, trichlorohydroxy(aluminum / zirconium)glycine) are preferred.

[0151] ·spices

[0152] As fragrances, there are natural fragrances and synthetic fragrances. Natural fragrances include plant-based fragrances extracted from flowers, leaves, wood, fruit peels, etc.; and animal-based fragrances such as musk and civet. Synthetic fragrances include hydrocarbons such as monoterpenes; alcohols such as aliphatic alcohols and aromatic alcohols; aldehydes such as terpenoids and aromatic aldehydes; ketones such as alicyclic ketones; esters such as terpene esters; lactones; phenols; oxides; nitrogen-containing compounds; acetals, etc.

[0153] Salts

[0154] As salts, examples include inorganic salts, organic acid salts, amine salts, and amino acid salts. Inorganic salts include, for example, sodium, potassium, magnesium, calcium, aluminum, zirconium, and zinc salts of inorganic acids such as hydrochloric acid, sulfuric acid, carbonic acid, and nitric acid. Organic acid salts include, for example, salts of organic acids such as acetic acid, dehydroacetic acid, citric acid, malic acid, succinic acid, ascorbic acid, and stearic acid. Amino acid and amino acid salts include, for example, salts of amines such as triethanolamine and salts of amino acids such as glutamic acid. In addition, salts of hyaluronic acid, chondroitin sulfate, aluminum zirconium glycine complexes, and acid-base neutralizing salts used in cosmetic formulations can also be used.

[0155] Antioxidants

[0156] There are no particular limitations on what constitutes an antioxidant. Examples include carotenoids, ascorbic acid and its salts, ascorbic acid stearate, tocopherol, tocopherol acetate, p-tert-butylphenol, butylated hydroxyanisole, butylated hydroxytoluene, phytic acid, thiotaurine, taurine, sulfites, isoascorbic acid and its salts, chlorogenic acid, epicatechin, epigallocatechin, epigallocatechin gallate, apigenin, kaempferol, myricetin, quercetin, etc. Only one antioxidant can be used, or two or more can be used in combination.

[0157] pH adjuster

[0158] Examples of pH adjusters include lactic acid, citric acid, glycolic acid, succinic acid, tartaric acid, dl-malic acid, potassium carbonate, sodium bicarbonate, and ammonium bicarbonate.

[0159] · Chelating agents

[0160] Examples of chelating agents include alanine, sodium oxalate tetraacetate, sodium polyphosphate, sodium metaphosphate, and phosphoric acid.

[0161] Cooling agents

[0162] Examples of cooling agents include L-menthol, camphor, and menthyl lactate.

[0163] Anti-inflammatory agents

[0164] Anti-inflammatory agents include allantoin, glycyrrhizic acid and its salts, glycyrrhetinic acid and glycyrrhetinic acid stearate, tranexamic acid, azulene, etc.

[0165] Skin care ingredients

[0166] As skin-beautifying ingredients, examples include whitening agents such as placental extract, arbutin, glutathione, and saxifrage extract; wrinkle improvers such as retinol and niacinamide; cell activators such as royal jelly, photosensitizers, cholesterol derivatives, and calf blood extract; skin roughness improvers; blood circulation promoters such as valine nonanoate, benzyl nicotinate, β-butoxyethyl nicotinate, capsaicin, gingerone, cantharides tincture, ichthammol, caffeine, tannic acid, α-thodol, nicotinic acid tocopherol, inositol hexanicotinate, cyclomansyl ester, cinnarizine, tolazoline, acetylcholine, verapamil, senna extract, and γ-oryzanol; skin astringents such as zinc oxide and tannic acid; and anti-seborrheic agents such as sulfur and dimethylthiazide.

[0167] Vitamins

[0168] As vitamins, examples include vitamin A derivatives such as vitamin A oil, retinol, retinol acetate, and retinol palmitate; vitamin B2 derivatives such as riboflavin, riboflavin butyrate, and flavin adenine nucleotide; vitamin B6 derivatives such as pyridoxine hydrochloride, pyridoxine dioctanoate, and pyridoxine tripalmitate; vitamin B12 and its derivatives, vitamin B15 and its derivatives; and L-ascorbic acid, L-ascorbic acid dipalmitate, and L-ascorbic acid-2-thiocyanate. Vitamins include sodium phosphate, dipotassium L-ascorbic acid phosphate, etc.; vitamins include ergocalciferol, cholecalciferol, etc.; vitamins include α-tocopherol, β-tocopherol, γ-tocopherol, dl-α-tocopherol acetate, dl-α-tocopherol nicotinic acid, dl-α-tocopherol succinate, etc.; nicotinic acid, benzyl nicotinate, nicotinamide, etc.; pantothenic acid, including vitamin H, vitamin P, calcium pantothenate, D-panthenol, panthenol ethyl ether, acetylpanthenol ethyl ether, etc.; and biotin, etc.

[0169] Amino acids

[0170] As amino acids, examples include glycine, valine, leucine, isoleucine, serine, threonine, phenylalanine, arginine, lysine, aspartic acid, glutamic acid, cystine, cysteine, methionine, and tryptophan.

[0171] Nucleic acid

[0172] Nucleic acids include deoxyribonucleic acid (DNA) and others.

[0173] ·hormone

[0174] Examples of hormones include estradiol and vinylestradiol.

[0175] inclusion complex

[0176] Examples of inclusion complexes include cyclodextrins.

[0177] Example

[0178] The following examples, comparative examples, dispersions, and cosmetics are provided to specifically illustrate the present invention. However, the present invention is not limited to the examples described below. Furthermore, unless otherwise specified, "%" in the following description of composition refers to "mass %", where the total mass of each example is set to 100% mass, and % represents the mass % of each component. The blending amount (content) is the blending amount of the described blended product.

[0179] [Manufacturing Example 1: Predispersion]

[0180] The pre-dispersions were prepared using the formulations shown in Table 1.

[0181] (Manufacturing method)

[0182] A: Mix component (1).

[0183] B: Add component (2) to the mixture obtained in A and disperse it using a bead mill.

[0184] [Table 1]

[0185]

[0186] (Note 1) Produced by Shin-Etsu Chemical Co., Ltd.: Lauryl polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane

[0187] [Examples 1-8, Comparative Examples 1-4: Dispersions]

[0188] The following evaluation was performed on the dispersions obtained below.

[0189] <Viscosity stability>

[0190] The viscosity of the dispersion immediately after preparation and after 2 weeks at 25°C were measured, and the rate of change was calculated. The viscosity in this evaluation was measured using a Type B viscometer (TVB-10, manufactured by Toki Sangyo), at 25°C with a spindle No. 3, 30 revolutions per minute, and a measurement time of 30 seconds. It should be noted that a viscosity exceeding the upper limit of the measurement range is indicated by "-" and is considered unacceptable.

[0191] The viscosity change rate (%) is calculated as: (Violus after 2 weeks at 25°C [mPa·s]) / (Violus immediately after preparation [mPa·s]) × 100. It should be noted that cases where the viscosity after 2 weeks at 25°C exceeds the upper limit of the measurement range are represented by "-".

[0192] [Example 1]

[0193] In a round-bottom flask, weigh 150 g of the pre-dispersion of Preparation Example 1 and (A) ethylhexyl palmitate (kinematic viscosity 15 mm at 25°C). 2 72g of the sample was placed in an evaporator and heated slowly in an oil bath under reduced pressure to remove component (D). The composition of the resulting dispersion was confirmed, showing that (C) lauryl polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane: 6.9% by mass, (B) metal soap-treated microparticle titanium dioxide (15nm): 44.4% by mass, (D) cyclopentasiloxane: 1.4% by mass, and (A) ethylhexyl palmitate: 47.3% by mass. The initial viscosity of the resulting dispersion was 445 mPa·s, and the viscosity change rate after 2 weeks at 25°C was 157%.

[0194] [Example 2]

[0195] 150 g of the pre-dispersion for Preparation Example 1 was weighed into a round-bottom flask. (A) KF-56A (diphenylsiloxyphenyl polytrimethylsiloxane, manufactured by Shin-Etsu Chemical Industry Co., Ltd.: kinematic viscosity 15 mm at 25°C) was weighed. 2 ( / s): 70g, installed in an evaporator, heated slowly in an oil bath under reduced pressure to remove component (D). The composition of the obtained dispersion was confirmed, and the results showed that (C) lauryl polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane: 6.5% by mass, (B) metal soap-treated microparticle titanium dioxide (15nm): 41.9% by mass, (D) cyclopentasiloxane: 8.2% by mass, and (A) KF-56A: 43.4% by mass. The initial viscosity of the obtained dispersion was 550 mPa·s, and the viscosity change rate after 2 weeks at 25°C was 136%.

[0196] [Example 3]

[0197] The dispersion from Example 1 was added to a flask, which was then mounted in an evaporator. Under reduced pressure and using an oil bath, the mixture was slowly heated to further remove component (D). The composition of the resulting dispersion was confirmed, showing that (C) lauryl polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane: 7% by mass, (B) metal soap-treated microparticle titanium dioxide (15 nm): 45% by mass, and (A) ethylhexyl palmitate (kinematic viscosity 15 mm at 25°C). 2 (d)cyclopentasiloxane: 48% by mass, (D)cyclopentasiloxane: 100 ppm. The initial viscosity of the resulting dispersion was 990 mPa·s, and the viscosity change rate after 2 weeks at 25°C was 182%.

[0198] [Example 4]

[0199] In a sample mill, (D) cyclopentasiloxane: 10% by mass and (C) lauryl polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane: 7% by mass were added and stirred. Then, (B) metal soap-treated microparticle titanium dioxide (15 nm): 45% by mass was added and stirred further to disperse component (B). Then, (A) (octanoic acid / capric acid) coconut alkyl ester (kinematic viscosity 5 mm at 25°C) was added to the dispersion. 2 (%): 38% by mass, mixed and dispersed using a paint shaker. The initial viscosity of the resulting dispersion was 400 mPa·s, and the viscosity change rate after 2 weeks at 25°C was 195%.

[0200] [Example 5]

[0201] In a sample mill, (D) isododecane: 7% by mass, (C) lauryl polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane: 7% by mass, and after stirring, (B) metal soap-treated microparticle titanium dioxide (15nm): 45% by mass, and further stirring were added to disperse component (B). Then, (A) isononyl isononanoate (kinematic viscosity 7mm at 25°C) was added to the dispersion. 2 (%): 40% by mass, mixed and dispersed using a paint shaker. The initial viscosity of the resulting dispersion was 580 mPa·s, and the viscosity change rate after 2 weeks at 25°C was 190%.

[0202] [Example 6]

[0203] In a beaker, add (D) C13-15 alkane: 5% by mass and (C) lauryl polyglycerol-3 polydimethylsiloxyethyl polydimethylsiloxane: 7% by mass, stir, and then add (A) squalane (kinematic viscosity 30 mmHg at 25°C). 2 A mixture was prepared by adding (B) metal soap-treated microparticles of titanium dioxide (15 nm): 43% by mass. The mixture was then mixed and dispersed using a paint shaker. The initial viscosity of the resulting dispersion was 378 mPa·s, and the viscosity change rate after 2 weeks at 25°C was 165%.

[0204] [Example 7]

[0205] In a beaker, (D) cyclopentasiloxane: 8.2% by mass and (C) lauryl polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane: 6.5% by mass were added. After stirring, (A) ethylhexyl palmitate (kinematic viscosity 15 mm at 25°C) was added. 2A mixture was prepared by adding (B) metal soap-treated microparticle titanium dioxide (15 nm): 43.4% by mass. The mixture was then mixed and dispersed using a bead mill. The initial viscosity of the resulting dispersion was 449 mPa·s, and the viscosity change rate after 2 weeks at 25°C was 212%.

[0206] [Example 8]

[0207] In a beaker, (D) cyclopentasiloxane: 1.4% by mass and (C) lauryl polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane: 6.9% by mass were added. After stirring, (A) diphenylsiloxyphenyl polytrimethylsiloxane (kinematic viscosity 15 mmHg at 25°C) was added. 2 A mixture was prepared by adding (B) metal soap-treated microparticle titanium dioxide (15 nm): 47.3% by mass. The mixture was then mixed and dispersed using a bead mill. The initial viscosity of the resulting dispersion was 589 mPa·s, and the viscosity change rate after 2 weeks at 25°C was 244%.

[0208] Furthermore, in the above embodiments, component (C) is a component dissolved in component (A).

[0209] [Comparative Examples 1-4: Dispersions]

[0210] Dispersions of Comparative Examples 1 to 4 were prepared using the formulations shown in Table 2.

[0211] (Manufacturing method)

[0212] A: Mix component (1).

[0213] B: Add component (2) to the mixture obtained in A and disperse it using a bead mill.

[0214] [Table 2]

[0215]

[0216] (Note 1) Produced by Shin-Etsu Chemical Co., Ltd.: Lauryl polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane (dissolved with component (A))

[0217] (Note 2) Shin-Etsu Chemical Co., Ltd.: Polyglycerol-3-disiloxane (polydimethylsiloxane) (insoluble in component (A))

[0218] (Note 3) (Dissolves with component (A))

[0219] Examples 1 through 8 all yielded dispersions with low initial viscosity. It is evident that, particularly for the dispersions of Examples 1 through 6, the viscosity change rate after 2 weeks was less than 200%, maintaining good dispersion stability. On the other hand, Comparative Examples 1 and 3 (containing no (D) component), Comparative Example 4 (containing no (A) component), and Comparative Example 2 (containing no (D) component but using a dispersant insoluble in (A) component) exhibited high initial viscosity and poor dispersibility.

[0220] [Examples 9-14, Comparative Examples 5-8] (Cosmetic Materials)

[0221] Oil-in-water (O / W) cosmetics with the formulations shown in Table 3 were prepared. The resulting oil-in-water (O / W) cosmetics were evaluated as follows.

[0222] (Manufacturing method)

[0223] A: Mix component (1).

[0224] B: Mix component (2).

[0225] C: The mixture obtained in B was added to the mixture obtained in A, and emulsified to obtain an oil-in-water (O / W) cosmetic.

[0226] [Properties of cosmetics]

[0227] To assess the quality of the obtained cosmetic material, it was held in a sliding glass container and evaluated. A material with good properties and continuity was classified as "good" (qualified), while a material with poor emulsification and loss of continuity was classified as "bad" (unqualified).

[0228] [Period stability of cosmetics]

[0229] The obtained cosmetic material was filled into 30mL vials and allowed to stand at 50°C. Compared to the initial state, a condition that remained good after one month was classified as "good" (acceptable); a condition that remained good after one week but deteriorated after one month was classified as "slightly good" (acceptable); and a condition that deteriorated after one week was classified as "bad" (unacceptable). It should be noted that no long-term stability test was performed on cosmetic materials that deteriorated initially.

[0230] [Table 3]

[0231]

[0232] [Table 4]

[0233]

[0234] (Note 1) Made by SEPPIC Corporation: SIMULGEL EG

[0235] As can be seen from the results in Tables 3 and 4, the dispersion of the present invention maintains dispersibility and dispersion stability even with strict formulations containing organic ultraviolet absorbers due to the good adsorption of the dispersant, and can produce cosmetics with good properties.

[0236] [Manufacturing Examples 2-4: Predispersions]

[0237] The pre-dispersion was prepared using the formulations shown in Table 5.

[0238] (Manufacturing method)

[0239] A: Mix component (1).

[0240] B: Add component (2) to A and disperse it using a bead mill.

[0241] [Table 5]

[0242]

[0243] (Note 1) Produced by Shin-Etsu Chemical Co., Ltd.: (acrylate / ethylhexyl acrylate / polydimethylsiloxane methacrylate) copolymer

[0244] (Note 2) Produced by Shin-Etsu Chemical Co., Ltd.: Lauryl polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane

[0245] (Note 3) Produced by Shin-Etsu Chemical Co., Ltd.: Polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane

[0246] [Manufacturing Examples 5-7: Predispersions]

[0247] The pre-dispersion was prepared using the formulation shown in Table 6.

[0248] (Manufacturing method)

[0249] A: Mix component (1).

[0250] B: Add component (2) to the mixture obtained in A and disperse it using a high-pressure disperser.

[0251] [Table 6]

[0252]

[0253] (Note 1) Produced by Shin-Etsu Chemical Co., Ltd.: (acrylate / ethylhexyl acrylate / polydimethylsiloxane methacrylate) copolymer

[0254] (Note 2) Produced by Shin-Etsu Chemical Co., Ltd.: Lauryl polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane

[0255] (Note 3) Produced by Shin-Etsu Chemical Co., Ltd.: Polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane

[0256] [Manufacturing Examples 8-10: Predispersions]

[0257] The pre-dispersion was prepared using the formulation shown in Table 7.

[0258] (Manufacturing method)

[0259] A: Mix component (1).

[0260] B: Add component (2) to the mixture obtained in A and disperse it using a high-pressure disperser.

[0261] [Table 7]

[0262]

[0263] (Note 1) Manufactured by Shin-Etsu Chemical Co., Ltd.: PEG-9 polydimethylsiloxyethyl polydimethylsiloxane

[0264] (Note 2) Produced by Shin-Etsu Chemical Co., Ltd.: Lauryl PEG-9 polydimethylsiloxyethyl polydimethylsiloxane

[0265] (Note 3) Produced by Shin-Etsu Chemical Co., Ltd.: Lauryl polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane

[0266] (Note 4) Made by Shin-Etsu Chemical Co., Ltd.: KTP-09W

[0267] (Note 5) Produced by Shin-Etsu Chemical Co., Ltd.: KTP-09R, Y, B

[0268] [Examples 15-23: Dispersions]

[0269] The dispersion was prepared using the same method as in Example 1, except that component (A) and the pre-dispersion were changed to make component (D) 5% by mass, as shown in the table below. The viscosity of the resulting dispersion changed by less than 200% after 2 weeks at 25°C. Furthermore, in the above examples, component (C) was a component dissolved in component (A).

[0270] [Table 8]

[0271]

[0272] [Example 24] O / W Sunscreen

[0273]

[0274] (Note 1) Produced by Shin-Etsu Chemical Co., Ltd.: Diphenylsiloxyphenyl polytrimethylsiloxane

[0275] (Note 2) Produced by Shin-Etsu Chemical Co., Ltd.: PEG-11 methyl ether polydimethylsiloxane

[0276] (Manufacturing method)

[0277] A: Mix components 1 to 4 evenly at 90°C.

[0278] B: Mix components 5 to 15 evenly at 85°C.

[0279] C: Add the mixture obtained in A to the mixture obtained in B, emulsify, add ingredient 16, mix evenly, and you will get an O / W sunscreen.

[0280] The resulting O / W sunscreen has high transparency, low stickiness, and a good user experience.

[0281] [Example 25] Water-in-oil type sunscreen

[0282]

[0283] (Note 1) Produced by Shin-Etsu Chemical Co., Ltd.: A mixture of 90-96% cyclopentasiloxane + 4-10% (polydimethylsiloxane / vinyl polydimethylsiloxane) crosslinked polymer.

[0284] (Note 2) Produced by Shin-Etsu Chemical Co., Ltd.: A mixture of 70-80% polydimethylsiloxane + 20-30% (polydimethylsiloxane / vinyl polydimethylsiloxane) crosslinked polymer.

[0285] (Note 3) Produced by Shin-Etsu Chemical Co., Ltd.: Polyglycerol-3-disiloxane, polydimethylsiloxane

[0286] (Note 4) Produced by Shin-Etsu Chemical Co., Ltd.: Polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane

[0287] (Note 5) Clariant Corporation: Aristoflex AVC

[0288] (Note 6) Seppic Corporation: Simulgel 600

[0289] (Note 7) Shin-Etsu Chemical Co., Ltd.: KF-9901 (hydrogenated polydimethylsiloxane) treatment

[0290] (Note 8) Shin-Etsu Chemical Co., Ltd.: AES-3083 (triethoxyoctylsilane) treatment

[0291] (Manufacturing method)

[0292] A: Mix components 1 to 4 evenly.

[0293] B: Mix components 5 to 11 evenly.

[0294] C: Add the mixture obtained in A to the mixture obtained in B, emulsify, and then add components 12 and 13, dispersing them evenly.

[0295] The water-in-oil sunscreen obtained as described above has high stability, high transparency, a non-sticky and pleasant user experience, and excellent water resistance.

[0296] [Example 26] Aqueous Gel

[0297]

[0298] (Manufacturing method)

[0299] A: Mix components 1 and 2 evenly.

[0300] B: Mix components 3 to 9 evenly.

[0301] C: Add the mixture obtained in step A above to the mixture obtained in step B above, and mix evenly.

[0302] D: After degassing the mixture obtained in step C above, it is filled into a container to obtain an aqueous gel.

[0303] The aqueous gel obtained as described above exhibits excellent wettability, high stability, and high transparency when coated, resulting in a non-sticky and pleasant user experience, as well as excellent water resistance.

[0304] [Example 27] Water-in-oil type sunscreen

[0305]

[0306] (Note 1) Shin-Etsu Chemical Co., Ltd. manufactures: (vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane) crosslinked polymer

[0307] (Note 2) Made by SEPPIC Corporation: SIMULGEL EG

[0308] (Manufacturing method)

[0309] A: Mix components 1-6 evenly, and mix component 7 until it is uniform.

[0310] B: Heat and dissolve components 8-12, and mix component 13 until homogeneous.

[0311] C: Add component 14 to the mixture obtained in step B above and mix thoroughly.

[0312] D: Add the heated mixture obtained in step C above to the heated mixture obtained in step A above, and emulsify it uniformly.

[0313] E: Cool the emulsion obtained in step D to room temperature, add component 24-25, and mix evenly.

[0314] F: After degassing the mixture obtained in step E above, it is filled into a container to obtain an oil-in-water type sunscreen.

[0315] The water-in-oil type sunscreen obtained as described above has high stability, high transparency, a non-sticky and pleasant feel, and excellent water resistance.

[0316] [Example 28] Water-in-oil type sunscreen lotion

[0317]

[0318] (Note 1) Made by SEPPIC Corporation: SIMULGEL EG

[0319] (Note 2) Shin-Etsu Chemical Co., Ltd.: 50% trimethylsiloxysilicic acid in cyclopentasiloxane solution

[0320] (Note 3) Produced by Shin-Etsu Chemical Co., Ltd.: Diphenylsiloxyphenyl polytrimethylsiloxane

[0321] (Note 4) Shin-Etsu Chemical Co., Ltd.: A mixture of 70-80% polydimethylsiloxane + 20-30% (polydimethylsiloxane / vinyl polydimethylsiloxane) crosslinked polymer.

[0322] (Note 5) Shin-Etsu Chemical Co., Ltd. manufactures: PEG-11 methyl ether polydimethylsiloxane

[0323] (Manufacturing method)

[0324] A: Heat components 2-6 to 85°C, add component 1, and mix evenly.

[0325] B: Heat components 7-15 to 85°C and mix them evenly.

[0326] C: Add the mixture obtained in B to the mixture obtained in A, emulsify at 85°C, and slowly cool while stirring to obtain an oil-in-water sunscreen lotion.

[0327] The water-in-oil sunscreen emulsion obtained as described above has high stability, high transparency, a non-sticky and pleasant user experience, and excellent water resistance.

[0328] [Example 29] Water-in-oil substrate

[0329]

[0330] (Note 1) Shin-Etsu Chemical Co., Ltd.: 30% cyclopentasiloxane solution of (acrylate / polydimethylsiloxane) copolymer

[0331] (Note 2) Produced by Shin-Etsu Chemical Co., Ltd.: A mixture of 80-90% polydimethylsiloxane + 10-20% (polydimethylsiloxane / vinyl polydimethylsiloxane) crosslinked polymer.

[0332] (Note 3) Produced by Shin-Etsu Chemical Co., Ltd.: Diphenylsiloxyphenyl polytrimethylsiloxane

[0333] (Note 4) Produced by Shin-Etsu Chemical Co., Ltd.: PEG-10 polydimethylsiloxane

[0334] (Note 5) Made by SEPPIC Corporation: SIMULGEL EG

[0335] (Manufacturing method)

[0336] A: Mix components 1 to 4 evenly.

[0337] B: Mix components 6-15 and component 5 evenly.

[0338] C: Add the mixture obtained in A to the mixture obtained in B, emulsify, and obtain an O / W substrate.

[0339] The water-in-oil substrate obtained as described above has high stability, high transparency, a non-sticky and pleasant user experience, and excellent water resistance.

[0340] [Example 30] Water-in-oil type foundation liquid

[0341]

[0342] (Note 1) Produced by Shin-Etsu Chemical Co., Ltd.: (acrylate / stearyl acrylate / polydimethylsiloxane methacrylate) copolymer

[0343] (Note 2) Produced by Shin-Etsu Chemical Co., Ltd.: Polyglycerol-3-dimethylsiloxyethyl polydimethylsiloxane

[0344] (Note 3) Shin-Etsu Chemical Co., Ltd.: 30% cyclopentasiloxane solution of (acrylate / polydimethylsiloxane) copolymer

[0345] (Note 4) Produced by Shin-Etsu Chemical Co., Ltd.: Triethoxyoctylsilane treatment

[0346] (Manufacturing method)

[0347] A: Components 11-13 were mixed, and components 14-17 were added, followed by roller treatment.

[0348] B: Mix components 1-8 and heat evenly to dissolve.

[0349] C: Mix components 9-10 with 22, 23, and 25, and heat.

[0350] D: Under stirring, the mixture obtained in C is added to the mixture obtained in B, emulsified, and the mixture obtained in A is added, followed by the addition of ingredients 18 and 24, to obtain an oil-in-water foundation.

[0351] The water-in-oil foundation obtained as described above has high stability, high transparency, a non-sticky feel, and excellent water resistance.

[0352] [Example 31] Water-in-oil sunscreen lotion

[0353]

[0354] (Note 1) Produced by Shin-Etsu Chemical Co., Ltd.: A mixture of 70-80% polydimethylsiloxane + 20-30% (polydimethylsiloxane / (PEG-10 / 15)) crosslinked polymer.

[0355] (Note 2) Produced by Shin-Etsu Chemical Co., Ltd.: A mixture of 90-96% cyclopentasiloxane + 4-10% (polydimethylsiloxane / vinyl polydimethylsiloxane) crosslinked polymer.

[0356] (Note 3) Produced by Shin-Etsu Chemical Co., Ltd.: PEG-9 polydimethylsiloxyethyl polydimethylsiloxane

[0357] (Manufacturing method)

[0358] A: Mix components 1 to 6 evenly.

[0359] B: Mix components 9-13 evenly.

[0360] C: Add A to the mixture obtained in B under stirring, emulsify, add ingredients 7 and 8, and obtain a water-in-oil sunscreen lotion.

[0361] The sunscreen lotion obtained as described above has high stability, high transparency, a non-sticky and pleasant feel, and excellent water resistance.

[0362] [Example 32] Sunscreen Lotion (Shake-activated)

[0363]

[0364] (Note 1) Shin-Etsu Chemical Co., Ltd.: A mixture of 80-90% diphenylsiloxyphenyl polytrimethylsiloxane and 10-20% (polydimethylsiloxane / phenyl vinyl polydimethylsiloxane) crosslinked polymer.

[0365] (Note 2) Produced by Shin-Etsu Chemical Co., Ltd.: Lauryl PEG-9 polydimethylsiloxyethyl polydimethylsiloxane

[0366] (Note 3) Produced by Shin-Etsu Chemical Co., Ltd.: A solvent of 70% cyclopentasiloxane + 30% (acrylate / polydimethylsiloxane) copolymer.

[0367] (Note 4) Shin-Etsu Chemical Co., Ltd. manufactures: (vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane) crosslinked polymer

[0368] (Note 5) Shin-Etsu Chemical Co., Ltd.: Cyclopentasiloxane dispersion of 40% particulate titanium dioxide

[0369] (Note 6) Shin-Etsu Chemical Co., Ltd.: Cyclopentasiloxane dispersion of 60% particulate zinc oxide

[0370] (Manufacturing method)

[0371] A: Mix components 1 to 10 evenly.

[0372] B: Add component 11 to the mixture obtained in A and disperse it evenly.

[0373] C: Add components 14-17 to component 18 and dissolve.

[0374] D: Slowly add the mixture obtained in C to the mixture obtained in B. After emulsification, add ingredients 12 and 13 to obtain the sunscreen lotion.

[0375] As can be seen from the above, the sunscreen lotion is easy to spread, dry and non-sticky, and does not change due to temperature or time. Its usability and stability are excellent.

[0376] [Example 33]

[0377] Except that component (A) was Shin-Etsu Chemical Industry Co., Ltd.'s KF-4418 (octyl polymethylsiloxane), the pre-dispersion of Manufacturing Example 1 was made into the pre-dispersion of Manufacturing Example 2, and component (D) was adjusted to 1000 ppm, the dispersion was prepared using the same method as in Example 1. The viscosity change rate of the obtained dispersion after 2 weeks at 25°C was less than 200%.

[0378] [Example 34] Sunscreen Stick

[0379]

[0380] (Note 1) Produced by Shin-Etsu Chemical Co., Ltd.: Diphenylsiloxyphenyl polydimethylsiloxane

[0381] (Note 2) Shin-Etsu Chemical Co., Ltd. manufactures: (methyl / phenyl) polysilsesquioxane

[0382] (Manufacturing method)

[0383] A: Mix ingredients 1-14 evenly at 110°C and fill into a stick-shaped container to obtain a sunscreen stick.

[0384] The sunscreen stick is easy to spread, leaves a dry and non-sticky finish, and does not change due to temperature or time, making it excellent in terms of usability and stability.

[0385] [Example 35] W / O rod-shaped substrate

[0386]

[0387] (Note 1) Shin-Etsu Chemical Co., Ltd.: A mixture of 20% (lauryl polydimethylsiloxane / polyglycerol-3) cross-linked polymer and 80% tri(ethylhexyl) glycerol.

[0388] (Note 2) Shin-Etsu Chemical Co., Ltd.: A mixture of 35% (vinyl polydimethylsiloxane / lauryl polydimethylsiloxane) crosslinked polymer and 65% (octanoic acid / capric acid) coconut oil alkyl ester.

[0389] (Note 3) Produced by Shin-Etsu Chemical Co., Ltd.: Lauryl PEG-9 polydimethylsiloxyethyl polydimethylsiloxane

[0390] (Note 4) Produced by Shin-Etsu Chemical Co., Ltd.: Diphenylsiloxyphenyl polytrimethylsiloxane

[0391] (Manufacturing method)

[0392] A: Mix components 1 to 6 evenly at 90°C.

[0393] B: Mix components 7 to 12 evenly at 85°C.

[0394] C: Add the mixture obtained in B to the mixture obtained in A, emulsify, add component 13-16, mix, and fill into a rod-shaped container to obtain a W / O rod-shaped substrate.

[0395] The resulting W / O rod substrate spreads easily, is dry and non-sticky, and does not change due to temperature or time, exhibiting excellent usability and stability.

Claims

1. A dispersion containing the following components (A), (B), (C), and (D). (A) Kinematic viscosity at 25°C is 1–100 mm. 2 / s of non-volatile oil: 15-65% by mass (B) Powder: 30-70% by mass (C) Dispersant dissolved in component (A): 1–15% by mass (D) Volatile components selected from lower alcohols and volatile oils with a boiling point below 250°C: 100 ppm to 10 by mass.

2. The dispersion according to claim 1, wherein component (B) is further dispersed by component (A) after being dispersed by components (C) and (D).

3. The dispersion according to claim 1, wherein, Compared to the viscosity immediately after preparation, the viscosity change rate after 2 weeks at 25°C is less than 250%.

4. The dispersion according to claim 1, wherein, The component (A) is selected from one or more of ester oils, phenyl organosilicones, and alkyl organosilicones.

5. The dispersion according to claim 1, wherein, The average primary particle size of component (B) is 8–200 nm.

6. The dispersion according to claim 1, wherein, The component (B) is hydrophobically treated microparticle titanium dioxide.

7. The dispersion according to claim 1, wherein, The component (C) is an organosilicon surfactant.

8. The dispersion according to claim 1, wherein, The (D) component comprises one or more selected from isododecane, undecane, tridecane, cyclopentasiloxane, disiloxane, trisiloxane, polydimethylsiloxane, and methylpolytrimethylsiloxane.

9. A method for manufacturing a dispersion according to any one of claims 1 to 8, comprising: a step of dispersing component (B) with said components (C) and (D) to obtain a pre-dispersion; and The process of mixing the pre-dispersion obtained above with component (A).

10. Cosmetic materials, among which, Formulate the dispersion according to any one of claims 1 to 8.

11. The cosmetic material according to claim 10, wherein, The cosmetic material is an oil-in-water type cosmetic material.

12. The cosmetic according to claim 10, further comprising (E) an organic ultraviolet absorber.

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