WO2022209998A1 - 水性スラリー、エマルション、化粧料、水性スラリーの製造方法、油中水型エマルションの製造方法、及び水中油型エマルションの製造方法 - Google Patents
水性スラリー、エマルション、化粧料、水性スラリーの製造方法、油中水型エマルションの製造方法、及び水中油型エマルションの製造方法 Download PDFInfo
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- WO2022209998A1 WO2022209998A1 PCT/JP2022/012472 JP2022012472W WO2022209998A1 WO 2022209998 A1 WO2022209998 A1 WO 2022209998A1 JP 2022012472 W JP2022012472 W JP 2022012472W WO 2022209998 A1 WO2022209998 A1 WO 2022209998A1
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- Prior art keywords
- aqueous slurry
- emulsion
- water
- oil
- aqueous
- Prior art date
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- A—HUMAN NECESSITIES
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/27—Zinc; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/29—Titanium; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/34—Alcohols
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
- A61K8/41—Amines
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
- A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
- A61K8/86—Polyethers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
- A61Q1/02—Preparations containing skin colorants, e.g. pigments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
- A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
Definitions
- the present invention relates to aqueous slurries, emulsions, cosmetics, methods for producing aqueous slurries, methods for producing water-in-oil emulsions, and methods for producing oil-in-water emulsions.
- Cosmetics such as liquid foundations and sunscreens contain an oil phase such as an oil agent and an aqueous phase such as an aqueous component.
- Metal oxide powders such as scattering agents and pigments are dispersed in the oil phase.
- these powders are subjected to hydrophobic treatment in order to impart water resistance and long-lasting effects to cosmetics, block the surface catalytic activity of metal oxides, and improve the feel of use. (For example, Patent Documents 1 and 2).
- the surface of the metal oxide powder is hydrophobized, it can be dispersed in the oil phase, but is difficult to disperse in the water phase, making it difficult to disperse the metal oxide powder throughout the cosmetic. be. Therefore, conventional cosmetics are limited in various functions such as UV protection ability.
- An object of the present invention is to provide an aqueous slurry that can improve various functions of cosmetics.
- the aqueous slurry according to one aspect of the present invention includes hydrophobic powder (A), one or more first surfactants (B) selected from quaternary ammonium salts, alcohol (C), and water (D).
- hydrophobic powder A
- one or more first surfactants B
- quaternary ammonium salts C
- alcohol C
- water D
- various functions of cosmetics can be improved.
- the aqueous slurry according to the present embodiment includes hydrophobic powder (A), one or more first surfactants (B) selected from quaternary ammonium salts, alcohol (C), and water ( D).
- A hydrophobic powder
- B one or more first surfactants selected from quaternary ammonium salts
- alcohol C
- D water
- an aqueous slurry indicates a suspension in which powder is dispersed in an aqueous medium.
- Hydrophobic powder (A) is not particularly limited. Examples include processed powders.
- the hydrophobic powder is powder dispersed in the hexane phase when the powder is dispersed in a mixed solvent of water and hexane at a mass ratio of 1:1.
- powders that are hydrophobic per se include polystyrene powder, polyethylene powder, N-acyllysine powder, epoxy resin powder, (vinyl dimethicone/methicone silsesquioxane) crosspolymer powder, (diphenyl dimethicone/vinyl diphenyl dimethicone). /silsesquioxane) organic resin powders such as crosspolymer powders; and metal soap powders such as aluminum stearate, zinc laurate, and magnesium stearate.
- the powder obtained by hydrophobizing the surface of the hydrophilic powder may be a raw material commonly used in cosmetics, and examples thereof include inorganic powders, organic powders, and composite powders.
- inorganic powders include titanium oxide, black titanium oxide, konjou, ultramarine, red iron oxide, yellow iron oxide, black iron oxide, zinc oxide, cerium oxide, aluminum oxide, magnesium oxide, zirconium oxide, magnesium carbonate, and calcium carbonate. , carbon black, aluminum silicate, magnesium silicate, aluminum magnesium silicate, mica, synthetic mica, synthetic sericite, sericite, talc, silicon carbide, barium sulfate, boron nitride and the like.
- organic powders examples include nylon powder, acrylic powder, silk powder, crystalline cellulose, N-acyl lysine, and tar pigments.
- composite powders include bismuth oxychloride, mica titanium, iron oxide-coated mica, iron oxide mica titanium, organic pigment-treated mica titanium, and aluminum powder. These powders can be used alone or in combination of two or more.
- hydrophobization treatment agent used for hydrophobization treatment of powder
- examples include dimethylpolysiloxane (dimethicone), methylhydrogenpolysiloxane (hydrogendimethicone), and hydrogendimethicone.
- high-viscosity silicones cross-linked silicones, fluorine-modified silicones, acrylic-modified silicones, silicone compounds such as silicone resins, trichlorosilanes such as octadecyltrichlorosilane, triethoxysilanes such as octyltriethoxysilane (OTS), perfluoroalkylsilanes , anionic surfactants, cationic surfactants, nonionic surfactants and other surfactants, metal soaps such as zinc laurate and zinc stearate, polyisobutylene, waxes, higher fatty acids such as stearic acid, palmitin Higher fatty acid esters such as acid dextrin, oils such as higher alcohols, N-acyl amino acids, perfluoroalkyl phosphoric acid and its salts, fluorine compounds such as perfluoropolyethers, perfluoropolyether alkyl phosphates and their salts,
- the method of treating powder with these hydrophobizing agents is not particularly limited, but includes, for example, a wet method using a solvent, a vapor phase method, a mechanochemical method, and the like.
- the treatment amount of the hydrophobic treatment agent is not particularly limited, but in consideration of the adhesion to the skin, the uniformity of the finish, and the longevity of the makeup, it is 0.5% by mass or more with respect to the hydrophobic powder (A). It is preferably 25% by mass or less, more preferably 2% by mass or more and 15% by mass or less.
- the content of the hydrophobic powder (A) is not particularly limited, but is preferably 0.1% by mass or more and 50% by mass or less, more preferably 5% by mass or more and 30% by mass or less, and still more preferably 10% by mass. It is more than 25 mass % or less. When the content of the hydrophobic powder is within this range, the functions of the powder can be sufficiently imparted, and good dispersibility can be maintained.
- One or more first surfactants (B) selected from quaternary ammonium salts are, for example, quaternary ammonium salt-type cationic surfactants.
- the quaternary ammonium salt-type cationic surfactant used in this embodiment is a dialkyldimethylammonium chloride represented by the following general formula.
- R1 is an alkyl group having 10 to 22 carbon atoms or a benzyl group
- R2 is a methyl group or an alkyl group having 10 to 22 carbon atoms
- R3 and R4 are an alkyl group or a hydroxyalkyl group having 1 to 3 carbon atoms
- X represents a halogen atom or a methylsulfate residue.
- dialkyldimethylammonium chloride represented by the general formula
- dialkyldimethylammonium chloride represented by the general formula
- distearyldimethylammonium chloride dihexadecyldimethylammonium chloride, ditetradecyldimethylammonium chloride, didodecyldimethylammonium chloride, didecyldimethylammonium chloride, and the like.
- distearyldimethylammonium chloride is preferred.
- the content of the first surfactant (B) is not particularly limited, but is preferably 0.01% by mass or more and 10% by mass or less, more preferably 0.5% by mass or more and 6% by mass or less, and still more preferably is 1% by mass or more and 5% by mass or less. When the content of the first surfactant (B) is within this range, it is possible to maintain good dispersibility of the hydrophobic powder in the aqueous phase when the aqueous slurry is dispersed in the aqueous phase.
- the alcohol (C) is not particularly limited, and may be a lower alcohol, a polyhydric alcohol, or the like.
- lower alcohols examples include ethanol, propanol, isopropanol, isobutyl alcohol, t-butyl alcohol and the like.
- Polyhydric alcohols include, for example, dihydric alcohols (e.g., ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, tetramethylene glycol, 2,3-butylene glycol, pentamethylene glycol, 2-butene-1,4-diol, hexylene glycol, octylene glycol, etc.); trihydric alcohols (e.g., glycerin, trimethylolpropane, etc.); tetrahydric alcohols (e.g., 1,2,6 -pentaerythritol such as hexanetriol); pentahydric alcohols (e.g., xylitol, etc.); hexahydric alcohols (e.g., sorbitol, mannitol, etc.); polyhydric alcohol polymers (e.g., diethylene glycol, dipropylene glycol, tri
- the content of the alcohol (C) is not particularly limited, but is preferably 1% by mass or more and 25% by mass or less, more preferably 2.5% by mass or more and 15% by mass or less, and still more preferably 5% by mass or more and 15% by mass. % or less. When the content of the alcohol (C) is within this range, the dispersibility of the hydrophobic powder in the aqueous slurry can be stabilized.
- Water (D) constitutes the medium for the hydrophobic powder in the aqueous slurry. Water (D) corresponds to the remainder of the aqueous slurry after removing hydrophobic powder (A), first surfactant (B), alcohol (C), and other optional ingredients.
- the content of water (D) is not particularly limited, but is preferably 20% by mass or more and 99% by mass or less, more preferably 55% by mass or more and 95% by mass or less, and still more preferably 60% by mass or more and 80% by mass. % by mass or less. When the content of water (D) is within this range, the suspension state of the aqueous slurry can be stabilized.
- the aqueous slurry of the present embodiment includes a hydrophobic powder (A), one or more first surfactants (B) selected from quaternary ammonium salts, an alcohol (C ), and water (D).
- A hydrophobic powder
- B first surfactants
- C alcohol
- D water
- the hydrophobic powder can be dispersed not only in the oil phase but also in the aqueous phase. Therefore, the slurry of the present embodiment can improve various functions such as UV protection, color development, and hiding power in cosmetics.
- the first surfactant (B) is selected from dialkyldimethylammonium chlorides represented by the above general formula, so that the water when the aqueous slurry is dispersed in the aqueous phase It can improve the dispersibility of the hydrophobic powder in the phase.
- the alcohol (C) is at least one selected from lower alcohols and polyhydric alcohols, so that the suspension state of the aqueous slurry can be stabilized.
- the aspect of the aqueous slurry according to the present embodiment is not particularly limited, but the first surfactant (B), alcohol (C), and hydrophobic powder (A) in a solvent containing water (D) is preferably an aqueous slurry in which is dispersed.
- the solvent indicates a mixed solvent of the first surfactant (B), alcohol (C) and water (D).
- a mixture of the hydrophobic powder (A), the first surfactant (B) and the alcohol (C) is dispersed in water (D). , more preferably an aqueous slurry.
- the mixture shows a state in which the hydrophobic powder (A) is impregnated with the first surfactant (B) and the alcohol (C).
- the dispersibility of the hydrophobic powder (A) in the aqueous slurry is further enhanced, and the suspension state of the aqueous slurry can be further stabilized. Further, by stabilizing the suspension state of the aqueous slurry, it is possible to further improve the dispersibility of the hydrophobic powder in the aqueous phase when the aqueous slurry is dispersed in the aqueous phase.
- the aqueous slurry of the present embodiment preferably further contains a second surfactant (E).
- the second surfactant (E) is one or more selected from nonionic surfactants (also referred to as nonionic surfactants) having an HLB of 10 or more.
- the content of the second surfactant (E) is not particularly limited, but is preferably 0.01% by mass or more and 6% by mass or less, more preferably 0.3% by mass or more and 4% by mass or less, and still more preferably is 0.5% by mass or more and 3% by mass or less.
- nonionic surfactant examples include polyoxyethylene glycol alkyl ester, polyoxyethylene glyceryl alkyl ester, polyoxyethylene hydrogenated castor oil, polyalkylene glycol phytosterol ether, polyethylene glycol alkyl ether, polyglycerin alkyl ester, poly Oxyethylene sorbitan fatty acid esters, polyglycerin alkyl esters, polyether-modified silicones and the like can be mentioned.
- the suspension state of the aqueous slurry can be stabilized.
- the content of the first surfactant (B) can be reduced in the aqueous slurry of the present embodiment, the smell of the aqueous slurry can be stabilized.
- stabilizing the suspension state of the aqueous slurry it is possible to improve the dispersibility of the hydrophobic powder in the aqueous phase when the aqueous slurry is dispersed in the aqueous phase.
- the aqueous slurry of the present embodiment when the content of a quaternary ammonium salt-type cationic surfactant such as distearyldimethylammonium chloride as the first surfactant (B) is high, the anionic polymer When adding an aqueous thickener such as , the aqueous slurry may aggregate and the suspension state may become unstable. Therefore, the aqueous slurry of the present embodiment preferably further contains a third surfactant (F).
- a third surfactant (F) when the content of a quaternary ammonium salt-type cationic surfactant such as distearyldimethylammonium chloride as the first surfactant (B) is high, the anionic polymer When adding an aqueous thickener such as , the aqueous slurry may aggregate and the suspension state may become unstable. Therefore, the aqueous slurry of the present embodiment preferably further contains a third surfactant (F).
- the third surfactant (F) is one or more selected from anionic surfactants.
- the content of the third surfactant (F) is not particularly limited, but is preferably 0.01% by mass or more and 3% by mass or less, more preferably 0.2% by mass or more and 2% by mass or less, and still more preferably is 0.3% by mass or more and 1% by mass or less.
- anionic surfactants include alkylmethyltaurate salts such as sodium stearoylmethyltaurate; alkylglutamates such as sodium stearoylglutamate; potassium-neutralized salts and sodium-neutralized salts of higher fatty acids having 12 to 22 carbon atoms; triethanolamine neutralized salt and the like.
- the stabilized suspension state of the aqueous slurry is maintained, and when the aqueous slurry is dispersed in the aqueous phase can improve the dispersibility of the hydrophobic powder.
- the third surfactant (F) even if the first surfactant (B) is contained, aggregation occurs when an aqueous thickener such as an anionic polymer is added. does not occur and a uniform aqueous slurry can be maintained.
- the aqueous slurry of the present embodiment contains coloring materials (excluding the hydrophobic powder), stabilizers, activators (excluding the surfactants), oxidation Other ingredients such as inhibitors, preservatives, etc. may be included.
- a coloring material is a component that colors the aqueous slurry (colors the cosmetics).
- the coloring material include inorganic white pigments such as red iron oxide, yellow iron oxide, black iron oxide, and zinc oxide; inorganic red pigments such as iron titanate; inorganic purple pigments such as mango violet and cobalt violet; Inorganic green pigments such as chromium, chromium hydroxide, and cobalt titanate; inorganic blue pigments such as ultramarine blue and prussian blue; metal powder pigments such as aluminum powder and copper powder; organic pigments such as zirconium, barium, and aluminum lake; Examples include natural pigments such as ⁇ -carotene. These coloring materials may be used singly or in combination of two or more.
- the content of the coloring material is not particularly limited, but is 0.1% by mass or more and 20% by mass or less, preferably 0.3% by mass or more and 15% by mass or less, more preferably 0.5% by mass in the aqueous slurry. It is more than mass % and below 10 mass %.
- a stabilizer is a component that imparts viscosity or adhesiveness to an aqueous slurry to maintain its shape.
- stabilizers include dextrin fatty acid esters, sucrose fatty acid esters, cellulose derivatives, aluminum isostearate, dibutylethylhexanoylglutamide, dibutyllauroylglutamide, bisdialkyl (C14-18) amides (ethylenediamine/hydrogenated dimer linoleic acid) copolymers, (VP/eicosene) copolymers, and the like. These stabilizers can be used singly or in combination of two or more.
- active agents include amphoteric surfactants, cationic surfactants, anionic surfactants, and nonionic surfactants, as shown below.
- Amphoteric surfactants have at least one cationic functional group and one anionic functional group, become cationic when the solution is acidic, anionic when alkaline, and become nonionic surfactants near the isoelectric point. have similar properties.
- Amphoteric surfactants are classified into carboxylic acid type, sulfate type, sulfonic acid type and phosphate type according to the type of anion group.
- carboxylic acid type, the sulfate ester type and the sulfonic acid type are preferred.
- the carboxylic acid type is further classified into an amino acid type and a betaine type. Among these, the betaine type is preferable in the present embodiment.
- amphoteric surfactants include imidazoline amphoteric surfactants (e.g., 2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.), betaine-based surfactants (e.g., 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauryldimethylaminoacetic acid betaine, alkylbetaine, amide betaine, sulfobetaine, etc.).
- imidazoline amphoteric surfactants e.g., 2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.
- cationic surfactants include quaternary ammonium salts such as cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, behenyldimethylhydroxyethylammonium chloride, stearyldimethylbenzylammonium chloride, and cetyltriethylammonium methylsulfate. is mentioned.
- stearic acid diethylaminoethylamide stearic acid dimethylaminoethylamide, palmitate diethylaminoethylamide, palmitate dimethylaminoethylamide, myristate diethylaminoethylamide, myristate dimethylaminoethylamide, behenate diethylaminoethylamide, dimethyl behenate Aminoethylamide, stearic acid diethylaminopropylamide, stearic acid dimethylaminopropylamide, palmitate diethylaminopropylamide, palmitate dimethylaminopropylamide, myristate diethylaminopropylamide, myristate dimethylaminopropylamide, behenate diethylaminopropylamide, behenine and amidoamine compounds such as acid dimethylaminopropylamide.
- anionic surfactants include fatty acid soaps, N-acylglutamates, carboxylic acid salt types such as alkyl ether acetic acid, sulfonic acid types such as ⁇ -olefin sulfonates, alkane sulfonates, and alkylbenzene sulfonic acids, It is classified into a sulfate ester salt type such as a higher alcohol sulfate ester salt, a phosphate ester salt type, and the like.
- anionic surfactants include fatty acid soaps (e.g., sodium laurate, sodium palmitate, etc.), higher alkyl sulfate salts (e.g., sodium lauryl sulfate, potassium lauryl sulfate, etc.), alkyl ether sulfate salts (e.g., , POE-triethanolamine lauryl sulfate, POE-sodium lauryl sulfate, etc.), N-acylsarcosic acid (e.g., sodium lauroyl sarcosinate, etc.), higher fatty acid amide sulfonates (e.g., sodium N-myristoyl-N-methyltaurate, coconut oil fatty acid methyl tauride sodium, lauryl methyl tauride sodium, etc.), phosphate ester salts (POE-sodium oleyl ether phosphate, POE-stearyl ether phosphate, etc.), sulf
- a nonionic surfactant is a surfactant that does not ionize in an aqueous solution and have an electric charge.
- Nonionic surfactants include hydrophobic nonionic surfactants and hydrophilic nonionic surfactants.
- hydrophobic nonionic surfactants types using alkyl as a hydrophobic group and types using dimethyl silicone are known.
- alkyl as a hydrophobic group examples include glycerin fatty acid esters, ethylene oxide derivatives of glycerin fatty acid esters, polyglycerin fatty acid esters, propylene glycol fatty acid esters, ethylene oxide derivatives of propylene glycol fatty acid esters, polyethylene glycol fatty acid esters, polyethylene glycol alkyl ethers, polyethylene glycol alkylphenyl ethers, polyethylene glycol castor oil derivatives, polyethylene glycol hydrogenated castor oil derivatives and the like.
- dimethylsilicone as a hydrophobic group
- types using dimethylsilicone as a hydrophobic group include polyether-modified silicone and polyglycerin-modified silicone.
- the type using alkyl as the hydrophobic group is preferable as the hydrophobic nonionic surfactant.
- hydrophilic nonionic surfactants include POE-sorbitan fatty acid esters (e.g., POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.).
- POE-sorbitan fatty acid esters e.g., POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.
- POE sorbitol fatty acid esters eg, POE-sorbitol monolaurate, POE-sorbitol monooleate, POE-sorbitol pentaoleate, POE-sorbitol monostearate, etc.
- POE-glycerin fatty acid esters eg, POE -POE-monooleate such as glycerin monostearate, POE-glycerin monoisostearate, POE-glycerin triisostearate, etc.
- POE-fatty acid esters e.g., POE-distearate, POE-monodioleate, ethylene glycol distearate, etc.
- POE-alkyl ethers e.g., POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether
- POE-sorbit beeswax, etc. alkanolamides (e.g., coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.), POE-propylene glycol fatty acid esters, POE-alkylamines, POE-fatty acid amide, sucrose fatty acid ester, alkylethoxydimethylamine oxide-trioleyl phosphate and the like.
- alkanolamides e.g., coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.
- POE-propylene glycol fatty acid esters POE-alkylamines
- POE-fatty acid amide sucrose fatty acid ester
- alkylethoxydimethylamine oxide-trioleyl phosphate alkylethoxydimethylamine oxide-trioleyl phosphate and the like.
- the content of the activator is not particularly limited, but is 0.01% by mass or more and 20% by mass or less, preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.5% by mass in the aqueous slurry. It is more than mass % and below 5 mass %.
- antioxidants examples include ascorbic acid, ⁇ -tocopherol, dibutylhydroxytoluene, and butylhydroxyanisole.
- preservatives include paraoxybenzoic acid ester, phenoxyethanol, octoxyglycerin, benzoic acid, salicylic acid, carbolic acid, sorbic acid, parachlorometacresol, hexachlorophen, benzalkonium chloride, chlorhexidine chloride, trichlorocarbanilide, and the like. be.
- FIG. 1 is a flow chart showing an example of a method for producing an aqueous slurry according to this embodiment.
- the hydrophobic powder (A), the quaternary ammonium salt surfactant (B), and the alcohol (C) are heated and dissolved at 80°C to 90°C to form a mixture. and dispersing the mixture in water (D) (FIG. 1, steps S1 to S2).
- the quaternary ammonium salt-type surfactant (B) and alcohol (C) are placed in a container such as a disper mixer, and the hydrophobic powder (A) is added to the solution dissolved by heating at 85°C.
- a mixture is prepared by stirring while stirring (FIG. 1, step S1).
- water (D) is added to this mixture and dispersed by stirring with a homogenizer at 7000 rpm for 2 minutes to obtain an aqueous slurry (FIG. 1, step S2).
- the stirring time is arbitrary, and is, for example, about 1 minute to 20 minutes.
- the hydrophobic powder (A), the quaternary ammonium salt surfactant (B), and the alcohol (C) are heated and dissolved at 80°C to 90°C.
- the resulting mixture is dispersed in water (D).
- the dispersibility of the hydrophobic powder (A) in the aqueous slurry is increased, and the suspension state of the aqueous slurry can be further stabilized. Further, by stabilizing the suspension state of the aqueous slurry and dispersing the obtained aqueous slurry in the aqueous phase, the dispersibility of the hydrophobic powder in the aqueous phase can be further improved.
- the emulsion according to this embodiment is an emulsion containing the aforementioned aqueous slurry.
- the form of the emulsion of the present embodiment is arbitrary, and examples thereof include a water-in-oil emulsion and an oil-in-water emulsion.
- a water-in-oil emulsion refers to an emulsion in which the continuous phase (external phase) is the oil phase and the dispersed phase (internal phase) is the aqueous phase.
- An oil-in-water emulsion refers to an emulsion in which the continuous phase (external phase) is an aqueous phase and the dispersed phase (internal phase) is an oil phase.
- the composition of the oil phase is arbitrary, and is composed of, for example, an oily component (oil).
- oily components include volatile oils, nonvolatile oils, and oil-soluble ultraviolet absorbers.
- Volatile oil is an oily component that evaporates at room temperature.
- volatile oils include hydrocarbon oils such as isododecane and isohexadecane; chain silicone oils such as dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane and methylhydrogenpolysiloxane; and cyclic silicone oils such as cyclopentasiloxane. ; and the like. These volatile oils can be used singly or in combination of two or more.
- a non-volatile oil component is an oily component that does not volatilize at room temperature.
- non-volatile oils include paraffin, liquid paraffin, ozokerite, squalane, squalene, pristane, ceresin, petroleum jelly, glyceryl tri-2-ethylhexanoate, isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate.
- oil-soluble ultraviolet absorbers examples include benzoic acid-based ultraviolet absorbers (e.g., para-aminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N,N-dipropoxy PABA ethyl ester, N,N-diethoxy PABA ethyl ester, N,N-dimethyl PABA ethyl ester, N,N-dimethyl PABA butyl ester, N,N-dimethyl PABA ethyl ester, etc.), anthranilic acid-based ultraviolet absorbers (e.g., homomenthyl-N-acetylanthranilate, etc.) ), salicylic acid-based UV absorbers (e.g., amyl salicylate, menthyl salicylate, homomenthyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropanol
- the content of the oily component in the oil phase of the emulsion is not particularly limited, but is 5% by mass or more and 95% by mass or less, preferably 10% by mass or more and 90% by mass or less, more preferably 15% by mass or more and 85% by mass. % by mass or less. When the content of the oily component is within this range, the usability of the cosmetic when used in the cosmetic is less likely to deteriorate.
- ingredients such as colorants, stabilizers, activators (excluding the above surfactants), antioxidants, preservatives, etc., other than the above ingredients, as long as they do not impair the effects of the present invention.
- stabilizers can be the same as other ingredients optionally contained in the aqueous slurry described above.
- the composition of the aqueous phase is arbitrary, and for example, it may be composed of the aforementioned aqueous slurry, or the aqueous component may contain the aforementioned aqueous slurry. .
- aqueous component is a component that dissolves easily in water.
- aqueous components include water, lower alcohols such as ethanol, and polyhydric alcohols such as glycerin. These aqueous components may be used singly or in combination of two or more.
- the content of the aqueous component in the emulsion is not particularly limited, but is 0.1% by mass or more and 30% by mass or less, preferably 0.5% by mass or more and 20% by mass or less, more preferably 1% by mass or more and 15% by mass. % or less.
- the content of the aqueous component is within this range, the usability of the cosmetic is less likely to deteriorate when the emulsion containing the aqueous component is used in the cosmetic.
- the dispersed phase of the emulsion contains the aforementioned aqueous slurry.
- the aqueous slurry is contained in the internal phase (aqueous phase) of the water-in-oil (W / O) emulsion, so that the hydrophobic powder becomes the internal phase ( aqueous phase).
- the aqueous slurry is included in the dispersed phase of the emulsion, so that the hydrophobic powder is included not only in the external phase (oil phase) of the water-in-oil emulsion, but also in the internal phase (aqueous phase or internal aqueous phase). ) can also be distributed. Therefore, it becomes possible to disperse the hydrophobic powder throughout the emulsion. Moreover, in cosmetics using such an emulsion, it is possible to improve various functions such as ultraviolet protection ability, coloring ability, and hiding power.
- the continuous phase of the emulsion contains the aforementioned aqueous slurry.
- the aqueous slurry is contained in the external phase (aqueous phase or external aqueous phase) of the oil-in-water (O/W) emulsion, so that the hydrophobic powder becomes the external phase ( water phase or external water phase).
- the aqueous slurry is included in the continuous phase of the emulsion, so that the hydrophobic powder is dispersed not only in the internal phase (oil phase) of the oil-in-water emulsion but also in the external phase (aqueous phase). be able to. Therefore, it becomes possible to disperse the hydrophobic powder throughout the emulsion. Moreover, in cosmetics using such an emulsion, it is possible to improve various functions such as ultraviolet protection ability, coloring ability, and hiding power.
- FIG. 2 and 3 are flowcharts showing an example of the method for producing an emulsion according to this embodiment.
- FIG. 2 shows an example of a method for producing a water-in-oil emulsion according to this embodiment
- FIG. 3 shows an example of a method for producing an oil-in-water emulsion according to this embodiment.
- a water-in-oil (W/O) emulsion is obtained by dispersing an aqueous component containing the aforementioned aqueous slurry in an oil component (Fig. 2, step S11). Specifically, a mixture obtained by stirring and mixing the oil phase components in advance is prepared, and after stirring while gradually adding the aforementioned aqueous slurry as the aqueous component to this mixture, the mixture is stirred at 7000 rpm for 2 minutes with a homogenizer to emulsify. Thereby, the aqueous slurry is dispersed in the dispersed phase (aqueous phase) to obtain a water-in-oil (W/O) emulsion.
- the aqueous slurry in which the hydrophobic powder (A) has high dispersibility and the suspended state is stabilized is a water-in-oil emulsion.
- W/O is dispersed in the aqueous phase (internal phase or internal aqueous phase) of the emulsion. This makes it possible to obtain a water-in-oil (W/O) emulsion with improved dispersibility of the hydrophobic powder in the aqueous phase (internal phase or internal water phase).
- an oil-in-water (O/W) emulsion is obtained by dispersing the oily component in the aqueous component containing the aqueous slurry described above ( FIG. 3 , step S21). .
- the above-described aqueous slurry is prepared as the aqueous component, and the mixture prepared by stirring and mixing the oil phase component in advance is added little by little to the aqueous component, and then stirred with a homogenizer at 7000 rpm for 2 minutes. Stir to emulsify.
- the aqueous slurry is dispersed in the continuous phase (aqueous phase) to obtain an oil-in-water (O/W) emulsion.
- the aqueous slurry in which the hydrophobic powder (A) has high dispersibility and the suspended state is stabilized is an oil-in-water type (O /W) dispersed in the aqueous phase (external phase or external aqueous phase) of the emulsion.
- O /W oil-in-water type
- the cosmetic according to this embodiment contains the emulsion described above. That is, the cosmetic of the present embodiment contains the above-mentioned aqueous slurry. Specifically, the cosmetic of the present embodiment contains a water-in-oil (W/O) emulsion shown in FIG. 2 or an oil-in-water (O/W) emulsion shown in FIG.
- W/O water-in-oil
- O/W oil-in-water
- the form of the cosmetic according to this embodiment is not particularly limited, and may be liquid, milky lotion, paste, cream, gel, or the like.
- Apps of the cosmetic according to the present embodiment are not particularly limited, and examples include makeup bases, liquid foundations, cream foundations, concealers, blushers, eye shadows, mascara, eyeliners, eyebrows, overcoat agents, and lipsticks. It can be used for applications such as cosmetics, UV protection cosmetics such as sunscreen emulsions and sunscreen creams, skin care cosmetics such as skin care emulsions, skin care creams, BB creams, and beauty essences. Among these, make-up cosmetics and UV protective cosmetics are preferred, and liquid foundations and sunscreen emulsions are more preferred.
- the method for producing the cosmetic according to the present embodiment is not particularly limited. ingredients, stabilizers, activators, antioxidants, preservatives, etc.) are placed in any cosmetic container from which an appropriate amount of cosmetics can be taken out.
- the cosmetic according to the present embodiment is a water-in-oil (W/O) emulsion in which an aqueous slurry is contained in an aqueous phase (internal phase or internal aqueous phase) and hydrophobic powder is dispersed. or containing an oil-in-water (O/W) emulsion.
- W/O water-in-oil
- O/W oil-in-water
- the cosmetic can contain a water-in-oil (W/O) emulsion in which the aqueous slurry (hydrophobic powder) is dispersed not only in the external phase (oil phase) but also in the internal phase (aqueous phase).
- W/O water-in-oil
- the cosmetic may contain an oil-in-water (O/W) emulsion that disperses not only in the internal phase (oil phase) but also in the external phase (aqueous phase). Therefore, the cosmetic of the present embodiment can improve various functions such as UV protection ability, coloring ability, and hiding power.
- distearyldimethylammonium chloride manufactured by Sanyo Chemical Industries, Ltd., cationic DSV
- dipropylene glycol manufactured by Asahi Glass Co., Ltd., DPG-FC
- the powder was poured in, heated and dissolved at about 85° C., and stirred with a disper mixer (HOMOGENIZING DISPER MODEL 2.5, manufactured by PRIMIX) while adding a hydrophobized metal oxide as the hydrophobic powder (A) to form a mixture. to prepare.
- a disper mixer HOMOGENIZING DISPER MODEL 2.5, manufactured by PRIMIX
- Ion-exchanged water was added as water (D) to this mixture, and the mixture was dispersed by stirring with a homogenizer (TK HOMOMIXER MARK2 MODEL 2.5, manufactured by PRIMIX) at 7000 rpm for 2 minutes to obtain an aqueous slurry sample.
- TK HOMOMIXER MARK2 MODEL 2.5 manufactured by PRIMIX
- C Aggregation of powder was confirmed visually, and the sample was non-uniform.
- shear thinning is calculated using the viscosity values ⁇ (100 s -1 ) and ⁇ (1000 s -1 ) at shear rates of 100 s -1 and 1000 s -1 and the viscosity attenuation rate from the following formula: is calculated, and shear thinning is considered to be confirmed when the viscosity attenuation rate is 0.3 or more.
- Viscosity decay rate ⁇ (100s -1 ) - ⁇ (1000s -1 ) ⁇ / ⁇ (100s -1 )
- the coated substrate is immersed in a propeller-stirred water stream for 30 minutes, and after drying, the transmittance is measured again by the method described above.
- the ratio of the integrated absorbance at 280 to 340 nm before and after the immersion test in water is taken as the water resistance and evaluated according to the following criteria.
- ⁇ Odor stability The odor stability of the sample (aqueous slurry) is evaluated according to the following criteria. After storing the prepared sample in a constant temperature bath at 50°C and 0°C for 4 weeks, a specialized panel evaluates the odor of the sample stored at 0°C and 50°C according to the following criteria. A: There is no difference in odor between the samples stored at 0°C and 50°C, and no ammonium odor is confirmed. B: Slight ammonium odor is observed in the sample stored at 50°C compared to the sample stored at 0°C. C: Ammonium odor is clearly confirmed in the sample stored at 50°C.
- ⁇ Aggregating property with polymer> The cohesiveness of the sample (aqueous slurry) when the water-soluble polymer is added is evaluated as follows.
- the prepared sample is applied to a blackboard with a 10 ⁇ m doctor blade, and its appearance is evaluated according to the following criteria.
- Example 1 2 parts of distearyldimethylammonium chloride as the first surfactant (B), 10 parts of dipropylene glycol as alcohol, octadecyltrichlorosilane (OTS) as hydrophobic powder / aluminum hydroxide treated pigment grade titanium oxide (Daito Kasei Kogyo 20 parts of OTS-2 TiO2 CR-50 manufactured by Co., Ltd. and 68 parts of deionized water were blended to prepare a sample (aqueous slurry) and evaluated. Table 1 shows the formulation and evaluation.
- OTS octadecyltrichlorosilane
- Example 2 A sample (aqueous slurry) was prepared in the same manner as in Example 1, except that 20 parts of OTS-treated zinc oxide (MSX-508OTS, manufactured by Tayka Co., Ltd.) was added instead of OTS/aluminum hydroxide-treated titanium oxide as the hydrophobic powder. and evaluated. Table 1 shows the formulation and evaluation.
- OTS-treated zinc oxide MSX-508OTS, manufactured by Tayka Co., Ltd.
- Example 3 A sample (aqueous slurry ) were prepared and evaluated. Table 1 shows the formulation and evaluation.
- Example 4 A sample (aqueous slurry) was prepared in the same manner as in Example 1, except that 20 parts of hydrogen-dimethicone-treated zinc oxide (manufactured by Tayka, MZY-203S) was blended instead of OTS/aluminum hydroxide-treated titanium oxide as the hydrophobic powder. prepared and evaluated. Table 1 shows the formulation and evaluation.
- Example 5 A sample (aqueous slurry) was prepared in the same manner as in Example 1, except that 20 parts of dextrin palmitate-treated zinc oxide (WSX-MZ500, manufactured by Tayka Co., Ltd.) was blended instead of OTS/aluminum hydroxide-treated titanium oxide as the hydrophobic powder. was prepared and evaluated. Table 1 shows the formulation and evaluation.
- Example 6 A sample was prepared in the same manner as in Example 1, except that 20 parts of stearic acid/aluminum hydroxide-treated titanium oxide (ST-485SA15, manufactured by Titan Kogyo Co., Ltd.) was blended instead of OTS/aluminum hydroxide-treated titanium oxide as the hydrophobic powder. (aqueous slurry) was prepared and evaluated. Table 1 shows the formulation and evaluation.
- Example 7 Same as Example 1, except that 20 parts of hydrogen dimethicone/aluminum hydroxide-treated titanium oxide (STR-100C-LP, manufactured by Sakai Kogyo Co., Ltd.) was blended instead of OTS/aluminum hydroxide-treated titanium oxide as the hydrophobic powder. A sample (aqueous slurry) was prepared and evaluated. Table 1 shows the formulation and evaluation.
- Example 8 A sample was prepared in the same manner as in Example 1, except that 20 parts of dimethicone/hydrated silica-treated zinc oxide (FINEX-51W-LP3, manufactured by Sakai Kogyo Co., Ltd.) was added instead of OTS/aluminum hydroxide-treated titanium oxide as the hydrophobic powder. (aqueous slurry) was prepared and evaluated. Table 1 shows the formulation and evaluation.
- Example 1 A sample was prepared and evaluated in the same manner as in Example 2 except that dipropylene glycol was not blended and the amount of ion-exchanged water blended was 78 parts. Table 1 shows the formulation and evaluation.
- Example 2 A sample was prepared and evaluated in the same manner as in Example 2, except that distearyldimethylammonium chloride was not blended and the amount of ion-exchanged water was changed to 70 parts. Table 1 shows the formulation and evaluation.
- Comparative Example 3 A sample was prepared and evaluated in the same manner as in Comparative Example 2, except that 20 parts of non-hydrophobic modified titanium oxide (aluminum hydroxide-treated titanium oxide) was blended instead of the OTS-treated zinc oxide as the hydrophobic powder. Table 1 shows the formulation and evaluation.
- Comparative Example 4 A sample was prepared and evaluated in the same manner as in Comparative Example 2, except that 20 parts of non-hydrophobic modified zinc oxide (silica-treated zinc oxide) was blended instead of the OTS-treated zinc oxide as the hydrophobic powder. Table 1 shows the formulation and evaluation.
- Example 5 In the same manner as in Example 2, except that 2 parts of glyceryl stearate (manufactured by Taiyo Kagaku Co., Ltd., Sunsoft (registered trademark) No. 8004-C) was added instead of distearyldimethylammonium chloride as the first surfactant. Samples were prepared and evaluated. Table 1 shows the formulation and evaluation.
- Example 9 0.2 parts of polypropylene glycol (PPG)-7/polyethylene glycol (PEG)-30 phytosterol (NIKKOL (registered trademark) EPP730, HLB: 13, manufactured by Nippon Surfactant Kogyo Co., Ltd.) as a second surfactant (E)
- PPG polypropylene glycol
- PEG polyethylene glycol
- NIKKOL registered trademark
- Table 2 shows the formulation and evaluation.
- Example 10 A sample (aqueous slurry) was prepared in the same manner as in Example 2, except that the amount of distearyldimethylammonium chloride was 1.6 parts and the amount of PPG-7/PEG-30 phytosterol was 0.4 parts. ,evaluated. Table 2 shows the formulation and evaluation.
- Example 11 A sample (aqueous slurry) was prepared and evaluated in the same manner as in Example 2 except that the amount of distearyldimethylammonium chloride was 1 part and the amount of PPG-7/PEG-30 phytosterol was 1 part. Table 2 shows the formulation and evaluation.
- Example 12 A sample (aqueous slurry) was prepared in the same manner as in Example 2 except that the amount of distearyldimethylammonium chloride was 1.4 parts and the amount of PPG-7/PEG-30 phytosterol was 1.4 parts. ,evaluated. Table 2 shows the formulation and evaluation.
- Example 13 Example except that 1.4 parts of PEG-30 phytosterol (NIKKOL BPS-30, HLB: 18, manufactured by Nippon Surfactant Kogyo Co., Ltd.) was added instead of PPG-7/PEG-30 phytosterol as a second surfactant. Samples were prepared and evaluated as in 12. Table 2 shows the formulation and evaluation.
- PEG-30 phytosterol NIKKOL BPS-30, HLB: 18, manufactured by Nippon Surfactant Kogyo Co., Ltd.
- Example 14 Except for blending 1.4 parts of PEG-10 phytosterol (NIKKOL (registered trademark) BPS-10, HLB: 13, manufactured by Nippon Surfactant Kogyo Co., Ltd.) instead of PPG-7/PEG-30 phytosterol as a second surfactant. prepared and evaluated samples in the same manner as in Example 12. Table 2 shows the formulation and evaluation.
- PEG-10 phytosterol NIKKOL (registered trademark) BPS-10, HLB: 13, manufactured by Nippon Surfactant Kogyo Co., Ltd.
- Example 15 Polysorbate 60 (polyoxyethylene sorbitan monostearate (20E.O.), HLB: 15) (NIKKOL TS-10V, manufactured by Nippon Surfactant Kogyo Co., Ltd.) instead of PPG-7/PEG-30 phytosterol as a second surfactant )
- a sample was prepared and evaluated as in Example 12, except that 1.4 parts of the product was added. Table 2 shows the formulation and evaluation.
- Example 16 Except that 1.4 parts of Beheneth 10 (NIKKOL (registered trademark) BB-10, HLB: 10, manufactured by Nippon Surfactant Kogyo Co., Ltd.) was blended instead of PPG-7/PEG-30 phytosterol as a second surfactant. prepared and evaluated samples in the same manner as in Example 12. Table 2 shows the formulation and evaluation.
- Example 17 Except for blending 1.4 parts of Beheneth 20 (NIKKOL (registered trademark) BB-20, HLB: 12, manufactured by Nippon Surfactant Kogyo Co., Ltd.) instead of PPG-7/PEG-30 phytosterol as a second surfactant. prepared and evaluated samples in the same manner as in Example 12. Table 2 shows the formulation and evaluation.
- NIKKOL registered trademark
- HLB 12, manufactured by Nippon Surfactant Kogyo Co., Ltd.
- Example 18 Except for blending 1.4 parts of Beheneth 30 (NIKKOL (registered trademark) BB-30, HLB: 14, manufactured by Nippon Surfactant Kogyo Co., Ltd.) instead of PPG-7/PEG-30 phytosterol as a second surfactant. prepared and evaluated samples in the same manner as in Example 12. Table 2 shows the formulation and evaluation.
- NIKKOL registered trademark
- HLB 14, manufactured by Nippon Surfactant Kogyo Co., Ltd.
- Example 19 1.4 parts of PEG-60 hydrogenated castor oil (NIKKOL (registered trademark) HCO-60, HLB: 14, manufactured by Nippon Surfactant Kogyo Co., Ltd.) instead of PPG-7/PEG-30 phytosterol as a second surfactant. Samples were prepared and evaluated as in Example 12, except that they were formulated. Table 2 shows the formulation and evaluation.
- Example 20 PEG-40 hydrogenated castor oil (manufactured by Nippon Surfactant Kogyo Co., Ltd., NIKKOL (registered trademark) HCO-40, HLB: 12) instead of PPG-7 / PEG-30 phytosterol as a second surfactant 1.4 parts Samples were prepared and evaluated as in Example 12, except that they were formulated. Table 2 shows the formulation and evaluation.
- Example 8 A sample was prepared in the same manner as in Example 2 except that PPG-7/PEG-30 phytosterol was not blended, the amount of distearyldimethylammonium chloride was 10 parts, and the amount of deionized water was 60 parts. ,evaluated. Table 2 shows the formulation and evaluation.
- Example 21 As a third surfactant (F), 0.22 parts of sodium stearoyl methyl taurate (NIKKOL (registered trademark) SMT, manufactured by Nippon Surfactant Kogyo Co., Ltd.) was further added, and the amount of PPG-7/PEG-30 phytosterol was reduced to 1. Samples were prepared and evaluated as in Example 12, except with .18 parts. Table 3 shows formulations and evaluations.
- NIKKOL registered trademark
- SMT sodium stearoyl methyl taurate
- Example 22 A sample was prepared and evaluated in the same manner as in Example 21, except that the amount of PPG-7/PEG-30 phytosterol was 0.88 parts and the amount of sodium stearoylmethyltaurate was 0.52 parts. Table 3 shows formulations and evaluations.
- Example 23 Instead of sodium stearoyl methyl taurate, 0.62 parts of sodium stearoyl glutamate (manufactured by Ajinomoto Co., Ltd., Amisoft (registered trademark) HS-11P (F)) was added, and the amount of PPG-7/PEG-30 phytosterol was changed to 0.78. Samples were prepared and evaluated in the same manner as in Example 21, except that the parts were Table 3 shows formulations and evaluations.
- Example 24 A sample was prepared and evaluated in the same manner as in Example 21, except that the amount of PPG-7/PEG-30 phytosterol was 0.78 parts and the amount of sodium stearoylmethyltaurate was 0.62 parts. Table 3 shows formulations and evaluations.
- Example 25 (Dimethylacrylamide/sodium acryloyldimethyltaurate) crosspolymer (SUPOLYMER G-1, manufactured by Toho Chemical Industry Co., Ltd.) was further added to 0.5 parts, and the amount of ion-exchanged water was changed to 67.5 parts. Samples were prepared and evaluated as in 22. Table 3 shows formulations and evaluations.
- Example 26 A sample was prepared and evaluated in the same manner as in Example 23, except that 0.5 part of a (dimethylacrylamide/sodium acryloyldimethyltaurate) crosspolymer was further blended and the amount of ion-exchanged water was changed to 67.5 parts. Table 3 shows formulations and evaluations.
- Example 27 A sample was prepared and evaluated in the same manner as in Example 24, except that 0.5 part of a (dimethylacrylamide/sodium acryloyldimethyltaurate) crosspolymer was added and the amount of ion-exchanged water was changed to 67.5 parts. Table 3 shows formulations and evaluations.
- Example 9 A sample was prepared and evaluated in the same manner as in Example 12, except that 0.5 part of (dimethylacrylamide/sodium acryloyldimethyltaurate) crosspolymer was further blended and the amount of ion-exchanged water was changed to 67.5 parts. Table 3 shows formulations and evaluations.
- an aqueous slurry containing hydrophobic powder, one or more first surfactants (B) selected from quaternary ammonium salts, alcohol, and water Since the body can be dispersed not only in the oil phase but also in the water phase, it is possible to improve various functions such as UV protection, color development, and hiding power of cosmetics by using it in cosmetics. I know.
- the sample (aqueous slurry) in which a nonionic surfactant having an HLB of 10 or more was further blended had both good dispersibility and water resistance, and furthermore had an odor. Stability was good (Examples 9-20).
- an aqueous slurry further containing one or more second surfactants (E) selected from nonionic surfactants with an HLB of 10 or more has high dispersibility and water resistance. It can be seen that the odor of the aqueous slurry is stabilized while maintaining.
- the aqueous slurry further containing one or two or more third surfactants (F) selected from anionic surfactants can maintain high dispersibility and water resistance, and further It turns out that it is hard to aggregate even if it mix
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Abstract
Description
本実施形態に係る水性スラリーは、疎水性粉体(A)、第四級アンモニウム塩から選ばれる1種又は2種以上の第1の界面活性剤(B)、アルコール(C)、及び水(D)、を含有する。本明細書において、水性スラリーは、粉体が水性媒体に分散された懸濁液を示す。
図1は、本実施形態に係る水性スラリーの製造方法の一例を示すフローチャートである。本実施形態の水性スラリーの製造方法は、疎水性粉体(A)、第四級アンモニウム塩型界面活性剤(B)、及びアルコール(C)を80℃乃至90℃で加熱溶解して混合物を得る工程と、該混合物を水(D)に分散する工程と、を有する(図1、ステップS1~S2)。
本実施形態に係るエマルションは、既述の水性スラリーを含有するエマルションである。本実施形態のエマルションの態様は、任意であり、油中水型エマルション、水中油型エマルションが挙げられる。油中水型エマルションは、連続相(外相)が油相であり、分散層(内相)が水相である乳化物を示す。水中油型エマルションは、連続相(外相)が水相であり、分散層(内相)が油相である乳化物を示す。
本実施形態に係る化粧料は、既述のエマルションを含有する。すなわち、本実施形態の化粧料は、既述の水性スラリーを含有する。具体的には、本実施形態の化粧料は、図2に示す油中水型(W/O)エマルション、または図3に示す水中油型(O/W)エマルションを含有する。
ステンレス容器に、第1の界面活性剤(B)としてジステアリルジメチルアンモニウムクロライド(三洋化成工業株式会社製、カチオンDSV)、アルコール(C)としてジプロピレングリコール(旭硝子株式会社製、DPG-FC)を注入し、約85℃で加熱溶解し、さらに疎水性粉体(A)として疎水化金属酸化物を添加しながらディスパーミキサー(PRIMIX社製、HOMOGENIZING DISPER MODEL2.5)を用いて撹拌することにより混合物を調製する。この混合物に水(D)としてイオン交換水を加え、ホモジナイザー(PRIMIX社製、T.K.HOMOMIXER MARK2 MODEL2.5)で7000rpm、2分間、撹拌し分散させ、水性スラリーの試料を得た。
試料(水性スラリー)の外観確認およびフローカーブ測定(せん断速度の変数として粘度を測定するレオロジー評価)を行い、下記基準により、試料(水性スラリー)の分散性を評価する。
A:試料は均一であり、シェアシニングが確認されない。
B:試料は均一であるが、フローカーブ測定によりシェアシニングが確認される。
C:目視で粉末の凝集を確認し、試料が不均一である。
粘度減衰率={η(100s-1)‐η(1000s-1)}/η(100s-1)
人の皮膚テクスチャーを模倣した50mm四方のアクリル樹脂製疑似基板に、一定量(2mg/cm2)の試料(水性スラリー)を塗布し、一定荷重(100±30g)、一定速度(100mm/秒×50往復)で基板上に均一に塗布する。一定時間(15分)乾燥後、塗布基板に対し、分光光度計(日立製作所社製、SPECTROPHOTOMETER U-3500)を用いて280~500nmの紫外光および可視光を透過させ、その透過率測定から吸光度を算出する。さらに、塗布基板をプロペラ攪拌による水流中に30分間浸漬させ、乾燥後に再度上述の方法で透過率を測定する。水中への浸漬試験前後の280~340nmにおける積算吸光度の比を耐水率として、下記基準により評価する。
A:耐水率80%以上
B:耐水率30%以上80%未満
C:耐水率30%未満
試料(水性スラリー)の匂い安定性を下記基準により評価する。調製した試料を50°Cおよび0°Cの恒温槽内にて4週間保存したのち、専門パネルによって、0℃および50℃で保管した試料の匂いを下記基準にて評価する。
A:0℃および50℃で保管した試料の匂いに差がなく、アンモニウム臭を確認しない。
B:0℃で保管した試料と比較して、わずかに50℃で保管した試料にアンモニウム臭を確認する。
C:50℃で保管した試料に明らかにアンモニウム臭を確認する。
水溶性高分子を添加した際の試料(水性スラリー)の凝集性について次の通り評価する。調製した試料を10μmのドクターブレードにて黒板に塗布し、その外観を下記基準により評価する。
A:試料は均一であり、凝集物や塗布むらを確認しない。
B:試料は均一であるが、わずかに凝集物を確認する。
C:試料は不均一で、塗布にむらがあり、多数の凝集物を確認する。
第1の界面活性剤(B)としてジステアリルジメチルアンモニウムクロライド2部、アルコールとしてジプロピレングリコール10部、疎水性粉体としてオクタデシルトリクロロシラン(OTS)/水酸化アルミニウム処理顔料級酸化チタン(大東化成工業社製、OTS-2 TiO2 CR-50)20部、及びイオン交換水68部を配合し、試料(水性スラリー)を調製し、評価した。配合、及び評価を表1に示す。
疎水性粉体としてOTS/水酸化アルミニウム処理酸化チタンの代わりにOTS処理酸化亜鉛(テイカ社製、MSX-508OTS)20部を配合した以外は、実施例1と同様に試料(水性スラリー)を調製し、評価した。配合、及び評価を表1に示す。
疎水性粉体としてOTS/水酸化アルミニウム処理酸化チタンの代わりにジメチコン/ハイドロゲンジメチコン処理酸化亜鉛(テイカ社製、MZY-510M3S)20部を配合した以外は、実施例1と同様に試料(水性スラリー)を調製し、評価した。配合、及び評価を表1に示す。
疎水性粉体としてOTS/水酸化アルミニウム処理酸化チタンの代わりにハイドロゲンジメチコン処理酸化亜鉛(テイカ社製、MZY-203S)20部を配合した以外は、実施例1と同様に試料(水性スラリー)を調製し、評価した。配合、及び評価を表1に示す。
疎水性粉体としてOTS/水酸化アルミニウム処理酸化チタンの代わりにパルミチン酸デキストリン処理酸化亜鉛(テイカ社製、WSX-MZ500)20部を配合した以外は、実施例1と同様に試料(水性スラリー)を調製し、評価した。配合、及び評価を表1に示す。
疎水性粉体としてOTS/水酸化アルミニウム処理酸化チタンの代わりにステアリン酸/水酸化アルミニウム処理酸化チタン(チタン工業社製、ST-485SA15)20部を配合した以外は、実施例1と同様に試料(水性スラリー)を調製し、評価した。配合、及び評価を表1に示す。
疎水性粉体としてOTS/水酸化アルミニウム処理酸化チタンの代わりにハイドロゲンジメチコン/水酸化アルミニウム処理酸化チタン(堺工業社製、STR-100C-LP)20部を配合した以外は、実施例1と同様に試料(水性スラリー)を調製し、評価した。配合、及び評価を表1に示す。
疎水性粉体としてOTS/水酸化アルミニウム処理酸化チタンの代わりにジメチコン/含水シリカ処理酸化亜鉛(堺工業社製、FINEX-51W-LP3)20部を配合した以外は、実施例1と同様に試料(水性スラリー)を調製し、評価した。配合、及び評価を表1に示す。
ジプロピレングリコールを配合せず、イオン交換水の配合量を78部とした以外は、実施例2と同様に試料を調製し、評価した。配合、及び評価を表1に示す。
ジステアリルジメチルアンモニウムクロライドを配合せず、イオン交換水の配合量を70部とした以外は、実施例2と同様に試料を調製し、評価した。配合、及び評価を表1に示す。
疎水性粉体としてOTS処理酸化亜鉛の代わりに非疎水変性酸化チタン(水酸化アルミニウム処理酸化チタン)20部を配合した以外は、比較例2と同様に試料を調製し、評価した。配合、及び評価を表1に示す。
疎水性粉体としてOTS処理酸化亜鉛の代わりに非疎水変性酸化亜鉛(シリカ処理酸化亜鉛)20部を配合した以外は、比較例2と同様に試料を調製し、評価した。配合、及び評価を表1に示す。
第1の界面活性剤としてジステアリルジメチルアンモニウムクロライドの代わりにステアリン酸グリセリル(太陽化学社製、サンソフト(登録商標) No.8004-C)2部を配合した以外は、実施例2と同様に試料を調製し、評価した。配合、及び評価を表1に示す。
第1の界面活性剤としてジステアリルジメチルアンモニウムクロライドの代わりにポリプロピレングリコール(PPG)-7/ポリエチレングリコール(PEG)-30フィトステロール(日本サーファクタント工業社製、NIKKOL(登録商標) EPP730、HLB:13)2部を配合した以外は、実施例2と同様に試料を調製し、評価した。配合、及び評価を表1に示す。
第2の界面活性剤(E)としてポリプロピレングリコール(PPG)-7/ポリエチレングリコール(PEG)-30フィトステロール(日本サーファクタント工業社製、NIKKOL(登録商標) EPP730、HLB:13)0.2部をさらに配合し、ジステアリルジメチルアンモニウムクロライドの配合量を1.8部とした以外は、実施例2と同様に試料(水性スラリー)を調製し、評価した。配合、及び評価を表2に示す。
ジステアリルジメチルアンモニウムクロライドの配合量を1.6部とし、PPG-7/PEG-30フィトステロールの配合量を0.4部とした以外は、実施例2と同様に試料(水性スラリー)を調製し、評価した。配合、及び評価を表2に示す。
ジステアリルジメチルアンモニウムクロライドの配合量を1部とし、PPG-7/PEG-30フィトステロールの配合量を1部とした以外は、実施例2と同様に試料(水性スラリー)を調製し、評価した。配合、及び評価を表2に示す。
ジステアリルジメチルアンモニウムクロライドの配合量を1.4部とし、PPG-7/PEG-30フィトステロールの配合量を1.4部とした以外は、実施例2と同様に試料(水性スラリー)を調製し、評価した。配合、及び評価を表2に示す。
第2の界面活性剤としてPPG-7/PEG-30フィトステロールの代わりにPEG-30フィトステロール(日本サーファクタント工業社製、NIKKOL BPS-30、HLB:18)1.4部を配合した以外は、実施例12と同様に試料を調製し、評価した。配合、及び評価を表2に示す。
第2の界面活性剤としてPPG-7/PEG-30フィトステロールの代わりにPEG-10フィトステロール(日本サーファクタント工業社製、NIKKOL(登録商標) BPS-10、HLB:13)1.4部を配合した以外は、実施例12と同様に試料を調製し、評価した。配合、及び評価を表2に示す。
第2の界面活性剤としてPPG-7/PEG-30フィトステロールの代わりにポリソルベート60(モノステアリン酸ポリオキシエチレンソルビタン(20E.O.)、HLB:15)(日本サーファクタント工業社製、NIKKOL TS-10V)1.4部を配合した以外は、実施例12と同様に試料を調製し、評価した。配合、及び評価を表2に示す。
第2の界面活性剤としてPPG-7/PEG-30フィトステロールの代わりにべへネス10(日本サーファクタント工業社製、NIKKOL(登録商標) BB-10、HLB:10)1.4部を配合した以外は、実施例12と同様に試料を調製し、評価した。配合、及び評価を表2に示す。
第2の界面活性剤としてPPG-7/PEG-30フィトステロールの代わりにべへネス20(日本サーファクタント工業社製、NIKKOL(登録商標) BB―20、HLB:12)1.4部を配合した以外は、実施例12と同様に試料を調製し、評価した。配合、及び評価を表2に示す。
第2の界面活性剤としてPPG-7/PEG-30フィトステロールの代わりにべへネス30(日本サーファクタント工業社製、NIKKOL(登録商標) BB―30、HLB:14)1.4部を配合した以外は、実施例12と同様に試料を調製し、評価した。配合、及び評価を表2に示す。
第2の界面活性剤としてPPG-7/PEG-30フィトステロールの代わりにPEG-60水添ヒマシ油(日本サーファクタント工業社製、NIKKOL(登録商標) HCO-60、HLB:14)1.4部を配合した以外は、実施例12と同様に試料を調製し、評価した。配合、及び評価を表2に示す。
第2の界面活性剤としてPPG-7/PEG-30フィトステロールの代わりにPEG-40水添ヒマシ油(日本サーファクタント工業社製、NIKKOL(登録商標) HCO-40、HLB:12)1.4部を配合した以外は、実施例12と同様に試料を調製し、評価した。配合、及び評価を表2に示す。
第2の界面活性剤としてPPG-7/PEG-30フィトステロールの代わりにステアリン酸PEG-5グリセリル(日本エマルジョン社製、EMALEX(登録商標) GM-5、HLB:8)1.4部を配合した以外は、実施例12と同様に試料を調製し、評価した。配合、及び評価を表2に示す。
PPG-7/PEG-30フィトステロールを配合せず、ジステアリルジメチルアンモニウムクロライドの配合量を10部とし、イオン交換水の配合量を60部とした以外は、実施例2と同様に試料を調製し、評価した。配合、及び評価を表2に示す。
第3の界面活性剤(F)としてステアロイルメチルタウリンナトリウム(日本サーファクタント工業社製、NIKKOL(登録商標) SMT)0.22部をさらに配合し、PPG-7/PEG-30フィトステロールの配合量を1.18部とした以外は、実施例12と同様に試料を調製し、評価した。配合、及び評価を表3に示す。
PPG-7/PEG-30フィトステロールの配合量を0.88部とし、ステアロイルメチルタウリンナトリウムの配合量を0.52部とした以外は、実施例21と同様に試料を調製し、評価した。配合、及び評価を表3に示す。
ステアロイルメチルタウリンナトリウムの代わりにステアロイルグルタミン酸ナトリウム(味の素社製、アミソフト(登録商標) HS-11P(F))0.62部を配合し、PPG-7/PEG-30フィトステロールの配合量を0.78部とした以外は、実施例21と同様に試料を調製し、評価した。配合、及び評価を表3に示す。
PPG-7/PEG-30フィトステロールの配合量を0.78部とし、ステアロイルメチルタウリンナトリウムの配合量を0.62部とした以外は、実施例21と同様に試料を調製し、評価した。配合、及び評価を表3に示す。
(ジメチルアクリルアミド/アクリロイルジメチルタウリンナトリウム)クロスポリマー(東邦化学工業社製、SUPOLYMER G-1)0.5部をさらに配合し、イオン交換水の配合量を67.5部とした以外は、実施例22と同様に試料を調製し、評価した。配合、及び評価を表3に示す。
(ジメチルアクリルアミド/アクリロイルジメチルタウリンナトリウム)クロスポリマー0.5部をさらに配合し、イオン交換水の配合量を67.5部とした以外は、実施例23と同様に試料を調製し、評価した。配合、及び評価を表3に示す。
(ジメチルアクリルアミド/アクリロイルジメチルタウリンナトリウム)クロスポリマー0.5部をさらに配合し、イオン交換水の配合量を67.5部とした以外は、実施例24と同様に試料を調製し、評価した。配合、及び評価を表3に示す。
(ジメチルアクリルアミド/アクリロイルジメチルタウリンナトリウム)クロスポリマー0.5部をさらに配合し、イオン交換水の配合量を67.5部とした以外は、実施例12と同様に試料を調製し、評価した。配合、及び評価を表3に示す。
Claims (14)
- 疎水性粉体(A)、
第四級アンモニウム塩から選ばれる1種又は2種以上の第1の界面活性剤(B)、
アルコール(C)、及び
水(D)、を含有する、
水性スラリー。 - 前記第1の界面活性剤(B)、前記アルコール(C)、及び前記水(D)を含有する溶媒中に、前記疎水性粉体(A)が分散してなる、
請求項1に記載の水性スラリー。 - 前記疎水性粉体(A)と前記第1の界面活性剤(B)と前記アルコール(C)との混合物が、前記水(D)に分散してなる、
請求項1に記載の水性スラリー。 - HLBが10以上の非イオン性界面活性剤から選ばれる、1種又は2種以上の第2の界面活性剤(E)をさらに含む、
請求項1乃至4のいずれか一項に記載の水性スラリー。 - アニオン性界面活性剤から選ばれる、1種又は2種以上の第3の界面活性剤(F)をさらに含む、
請求項1乃至5のいずれか一項に記載の水性スラリー。 - 前記アルコール(C)は、低級アルコール、及び多価アルコールから選ばれる少なくとも1種である、
請求項1乃至6のいずれか一項に記載の水性スラリー。 - 請求項1乃至7のいずれか一項に記載の水性スラリーを含有するエマルションであって、
前記エマルションの分散相に前記水性スラリーが含まれる、
エマルション。 - 請求項1乃至7のいずれか一項に記載の水性スラリーを含有するエマルションであって、
前記エマルションの連続相に前記水性スラリーが含まれる、
エマルション。 - 請求項8または9に記載のエマルションを含有する、
化粧料。 - 請求項1乃至7のいずれか一項に記載の水性スラリーを含有する、
化粧料。 - 疎水性粉体(A)、第四級アンモニウム塩型界面活性剤(B)、及びアルコール(C)を80℃乃至90℃で加熱溶解して混合物を得る工程と、
前記混合物を水(D)に分散する工程と、を有する、
水性スラリーの製造方法。 - 水性成分を油性成分に分散させる油中水型エマルションの製造方法であって、
前記水性成分が、請求項1乃至7のいずれか一項に記載の水性スラリーを含有する、
油中水型エマルションの製造方法。 - 油性成分を水性成分に分散させる水中油型エマルションの製造方法であって、
前記水性成分が、請求項1乃至7のいずれか一項に記載の水性スラリーを含有する、
水中油型エマルションの製造方法。
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JP2016121124A (ja) * | 2014-12-25 | 2016-07-07 | ライオン株式会社 | デオドラント組成物 |
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