JP6851723B2 - Oil-in-water composition - Google Patents

Description

The present invention relates to an oil-in-water composition, particularly an oil-in-water composition using an oil-absorbing hydrophobic powder.

Normally, for skin care and makeup work, skin care cosmetics such as lotion are used to condition the skin, and then foundation is used to correct skin defects (color tone or unevenness), and if necessary, the desired color tone and imprint. And adjust the appearance.
As the foundation, there are powdery foundation, liquid foundation and the like. In particular, the liquid foundation has excellent growth and demand is expanding.
However, since the liquid foundation uses a liquid oil-based base regardless of whether it is oil-based or emulsified, stickiness is likely to occur during and after application, and in this respect, it is difficult to obtain a smooth skin feel of the powdery foundation.

Japanese Patent Application Laid-Open No. 9-48723 JP 2006-63032 Patent No. 3291195 Japanese Patent Application Laid-Open No. 10-203936 JP 2006-63032

The present invention has been made in view of the above-mentioned prior art, and a problem to be solved thereof is to provide an oil-in-water composition which has good elongation at the time of application and can obtain a smooth skin feel after application. is there.

As a result of studies by the present inventors in order to solve the above-mentioned problems, by blending a specific oil-absorbing hydrophobic powder in an aqueous medium, the liquid type is excellent in smoothness while ensuring good elongation. We have found that we can obtain a soft feel to the skin, and have completed the present invention.
That is, the oil-in-water composition according to the present invention is
Aqueous media containing water and water-soluble and volatile organic solvents,
The oil dispersed in the aqueous medium and
The aqueous medium and the oil-absorbing hydrophobic powder capable of absorbing the oil,
The oil-absorbing hydrophobic powder is characterized by retaining an aqueous medium in the composition.
In the above composition, it is preferable that the oil-absorbing hydrophobic powder uses crosslinked polymethylmethacrylate as a main material.
Further, in the composition, the maximum oil-absorbable amount of the oil-absorbing hydrophobic powder is preferably 90% by mass or more with respect to the powder.
Further, in the above composition, the blending amount of the oil-absorbing hydrophobic powder is preferably 5 to 25% by mass, and the blending amount of the oil content is preferably 15 to 130% by mass with respect to the maximum oil-absorbable amount of the oil-absorbing hydrophobic powder. Is.

According to the oil-in-water type composition according to the present invention, the oil-absorbing hydrophobic powder retains an aqueous medium in the composition, but after being applied on the skin, the aqueous medium volatilizes and the skin becomes silky. You can get a feel.

It is explanatory drawing of the drying process of the oil-in-water type composition which concerns on this invention. It is explanatory drawing of the aqueous medium uptake state by a powder.

Hereinafter, embodiments of the present invention will be described in detail.

[Oil-absorbing hydrophobic powder]
As the oil-absorbing hydrophobic powder preferably used in the present invention, crosslinked polymethylmethacrylate, nylon porous powder and the like are preferably used. The material itself may be lipophilic, or the material may be hydrophilic but coated with a lipophilic substance, but in the case of coating, it is preferable that the inside of the pores is lipophilic.
The maximum oil-absorbable amount of the oil-absorbing hydrophobic powder is preferably 90% by mass or more with respect to the powder. If the maximum oil-absorbable amount is less than 90% by mass, sufficient oil cannot be absorbed at the time of application, and a good skin feel may not be obtained.
The blending amount of the oil-absorbing hydrophobic powder in the composition is 5 to 25% by mass, preferably 10 to 20% by mass. If it is less than 5% by mass, a smooth feeling of use may not be obtained, and if it exceeds 25% by mass, the composition may not become liquid.
In the present invention, it is considered that the oil-absorbing hydrophobic powder takes in the aqueous medium described later in the pores at that time, and hardly takes in the coexisting oil component in the composition. Then, the oil-absorbing hydrophobic powder incorporating the aqueous medium is localized around the oil droplets and forms a structure similar to powder emulsification.

[Aqueous medium]
In the present invention, the aqueous medium is mainly composed of water and further added with a volatile organic solvent. Here, as the volatile organic solvent, ethyl alcohol, propanol, isopropanol, isobutyl alcohol, t-butyl alcohol and the like are preferably exemplified.
Further, the amount of the volatile organic solvent blended in the aqueous medium is equal to or higher than the concentration at which the oil-absorbing hydrophobic powder acquires the property of retaining the aqueous medium, and in the case of the crosslinked polymethylmethacrylate powder, It is 5% by mass or more, preferably 5 to 30% by mass in the aqueous medium. If the amount of the organic solvent blended in the aqueous medium is less than 5% by mass, the oil-absorbing hydrophobic powder may not be able to retain the aqueous medium, and if it exceeds 30% by mass, it may be used as a foundation. May produce an alcoholic odor.

[Oil]
As the oil component preferably used in the present invention, various oil components such as polar oil and silicone oil can be used.
Examples of the polar oil include ester oils such as glyceryl tri2-ethylhexanoate, and glyceryl tri2-ethylhexanoate is particularly preferable when crosslinked polymethylmethacrylate is used as the oil-absorbing hydrophobic powder.
Examples of the non-polar oil include methylpolysiloxane, methylphenylpolysiloxane, and liquid paraffin.
The oil content is 150% or less, particularly preferably 15% to 130%, of the oil content (maximum oil absorption amount) that the oil-absorbing hydrophobic powder can absorb. Especially, 15 to 80% is preferable.
When the amount of oil exceeds 150% of the maximum amount of oil absorbed, it tends to be sticky for a long time at the time of application. Further, if it is less than 15%, it may be felt that the elongation at the time of application is poor.
Oils include isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, acetic acid. Lanolin, isosetyl stearate, isosetyl isostearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, N-alkylglycol monoisostearate, neopentyl glycol dicaprate, glycerin di-2-heptyl undecanoate, tri Trimethylol propane-2-ethylhexanoate, trimethyl propane triisostearate, pentaerythritol tetra-2-ethylhexanoate, glycerin tri-2-ethylhexanoate, glycerin trioctanoate, glycerin triisopalmitate, triisostearate Methylolpropane, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glycerin trimyristate, glyceride tri-2-heptyl undecanoic acid, oleyl oleate, acetoglyceride, 2-heptyl undecyl palmitate, diisobutyl adipate, Di-2-heptylundesyl adipate, ethyllaurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2 succinate -Ethylhexyl, triethyl citrate and the like can be mentioned.

Examples of the silicone oil include chain polysiloxane (eg, dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane, etc.); cyclic polysiloxane (eg, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexane). Sasiloxane, etc.), various modified polysiloxanes (amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, fluorine-modified polysiloxane, etc.), acrylic silicones, and the like.
The oil content preferably used in the present invention preferably has a viscosity of less than 100 mPa · s as a whole.

[Dispersant]
In the present invention, the dispersant is preferably a carboxylic acid polymer such as a carboxyvinyl polymer, sodium polyacrylate, or an acrylic acid / alkyl methacrylate copolymer.

[Viscosity of composition]
The viscosity of the oil-in-water composition according to the present invention is preferably 100,000 mPa · s or less. When the viscosity of the oil-in-water composition is 100,000 mPa · s or less, a good coating feeling like a liquid foundation can be obtained. When the viscosity of the oil-in-water type composition is 100 mPa · s or less, the oil-absorbing hydrophobic powder tends to settle, so it is preferable to make it larger than 100 mPa · s. The viscosity of the oil-in-water composition is preferably 100 to 8000 mPa · s, more preferably 2000 to 4000 mPa · s.

[Other]
In addition to the above essential ingredients, the oil-in-water composition of the present invention can contain ingredients usually used in oil-in-water compositions for cosmetics and quasi-drugs, and is produced according to a conventional method. Although specific compoundable components are listed below, the oil-in-water composition of the present invention can be prepared by blending one or more of the following components in addition to the essential components.

Examples of moisturizers include polyethylene glycol, propylene glycol, glycerin, 1,3-butylene glycol, xylitol, sorbitol, martitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, sodium lactate, and bile salt. Examples thereof include dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO) PO adduct, Izayoi rose extract, Xylitol extract, and melilot extract.

Examples of the powder component include inorganic powders (for example, talc, kaolin, mica, silk mica (serisite), white mica, gold mica, synthetic mica, red mica, black mica, permiculite, magnesium carbonate, calcium carbonate, silicic acid. Aluminum, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungate, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate (baked sekko), calcium phosphate, fluoroapatite, hydroxyapatite, ceramic powder , Metal soaps (eg zinc myristate, calcium palmitate, aluminum stearate), boron nitride, etc.; Organic powders (eg polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene powder, styrene And acrylic acid copolymer resin powder, benzoguanamine resin powder, polytetrafluorinated ethylene powder, cellulose powder, etc.); Inorganic white pigment (eg, zinc oxide, etc.); Inorganic red pigment (eg, iron titanate, etc.); Inorganic purple pigments (eg, mango violet, cobalt violet, etc.); Inorganic green pigments (eg, chromium oxide, chromium hydroxide, cobalt titanate, etc.); Inorganic blue pigments (eg, ultramarine, dark blue, etc.); Pearl pigments (For example, titanium oxide coated mica, titanium oxide coated bismuth oxychloride, titanium oxide coated talc, colored titanium oxide coated mica, bismuth oxychloride, fish scale foil, etc.); metal powder pigments (eg, aluminum powder, copper powder, etc.); zirconium , Barium or aluminum lakes and other organic pigments (eg, Red 201, Red 202, Red 204, Red 205, Red 220, Red 226, Red 228, Red 405, Orange 203, Orange 204. Organic pigments such as No., Yellow No. 205, Yellow No. 401, and Blue No. 404, Red No. 3, Red No. 104, Red No. 106, Red No. 227, Red No. 230, Red No. 401, Red No. 505, Orange No. 205 , Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Green No. 3, Blue No. 1, etc.); Natural pigments (for example, chlorophyll, β-carotene, etc.) and the like.

Liquid fats and oils include, for example, avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, southern ka oil, castor oil, flaxseed oil. , Saflower oil, cotton seed oil, eno oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, cinnamon oil, Japanese millet oil, jojoba oil, germ oil, triglycerin and the like.

Examples of solid fats and oils include coconut oil, palm oil, horse fat, hardened palm oil, palm oil, beef tallow, sheep fat, hardened beef tallow, palm kernel oil, lard, beef tallow, mokuro kernel oil, hardened oil, and cow. Examples include leg tallow, coconut oil, and hydrogenated palm oil.

Examples of waxes include honey wax, candelilla wax, cotton wax, carnauba wax, baby wax, ibotarou, whale wax, montan wax, lanolin, lanolin, capoc wax, lanolin acetate, liquid lanolin, sugar cane, lanolin fatty acid isopropyl, hexyl laurate, and the like. Examples thereof include reduced lanolin, jojobaro, hard lanolin, cellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, POE hydrogenated lanolin alcohol ether and the like.

Examples of the hydrocarbon oil include liquid paraffin, ozokelite, pristane, paraffin, selecin, squalene, petrolatum, microcrystalline wax and the like.
Higher fatty acids include, for example, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecylene acid, tall acid, isostearic acid, linoleic acid, linoleic acid, eicosapentaenoic acid (EPA), docosahexaenoic acid ( DHA) and the like.

Higher alcohols include, for example, linear alcohols (eg, lauryl alcohols, cetyl alcohols, stearyl alcohols, behenyl alcohols, myristyl alcohols, oleyl alcohols, cetostearyl alcohols, etc.); branched alcohols (eg, monostearyl glycerin ethers (bacyl alcohols)). ), 2-Deciltetradecinol, lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, octyldodecanol, etc.) and the like.

Further, various surfactants may be blended in the oil-in-water composition according to the present invention.
Examples of the anionic surfactant include fatty acid sulphates (eg, sodium laurate, sodium palmitate, etc.); higher alkyl sulfates (eg, sodium lauryl sulfate, potassium lauryl sulfate, etc.); alkyl ether sulfates (eg, sodium lauryl sulfate, etc.). POE-sodium lauryl sulfate triethanolamine, POE-sodium lauryl sulfate, etc.); N-acylsarcosic acid (eg, sodium lauroyl sarcosin, etc.); higher fatty acid amide sulfonate (eg, N-myristoyl-N-methyltaurine sodium, palm) Oil fatty acid methyl taurid sodium, lauryl methyl taurid sodium, etc.); Phosphate ester salts (POE-oleyl ether phosphate sodium, POE-stearyl ether phosphoric acid, etc.); Sulfonic acid salts (for example, di-2-ethylhexyl sulfosuccinic acid) Sodium, monolauroyl monoethanolamide polyoxyethylene sulfosuccinate sodium, sodium lauryl polypropylene glycol sulfosuccinate, etc.); alkylbenzene sulfonates (eg, sodium linadodecylbenzene sulfonate, triethanolamine linadodecylbenzene sulfonate, linadodecylbenzene sulfonate) Acids, etc.); Higher fatty acid ester sulfate ester salts (eg, hardened coconut oil fatty acid sodium glycerin sulfate, etc.); N-acylglutamate (eg, monosodium N-lauroyl glutamate, disodium N-stearoyl glutamate, N-myristoyl-L) -Sulfated oil (eg, funnel oil, etc.); POE-alkyl ether carboxylic acid; POE-alkylallyl ether sulfonate; α-olefin sulfonate; higher fatty acid ester sulfonate; secondary Alcohol sulfate ester salt; higher fatty acid alcoholuramide sulfate ester salt; sodium lauroyl monoethanolamide succinate; N-palmitoyl aspartate ditriethanolamine; sodium caseinate and the like.

Examples of the cationic surfactant include alkyltrimethylammonium salts (eg, stearyltrimethylammonium chloride, lauryltrimethylammonium chloride, etc.); alkylpyridinium salts (eg, cetylpyridinium chloride, etc.); distearyldimethylammonium chloride dialkyldimethylammonium salts; Polychloride (N, N'-dimethyl-3,5-methylenepiperidinium); alkyl quaternary ammonium salt; alkyldimethylbenzylammonium salt; alkylisoquinolinium salt; dialkylmoriphonium salt; POE-alkylamine; Alkylamine salts; polyamine fatty acid derivatives; ammonium alcohol fatty acid derivatives; benzalconium chloride; benzethonium chloride and the like can be mentioned.

Examples of the amphoteric tenside include imidazoline-based amphoteric tenside agents (for example, 2-undecyl-N, N, N- (hydroxyethylcarboxymethyl) -2-imidazolin sodium, 2-cocoyl-2-imidazolinium hydroki. Side-1-carboxyethyroxy disodium salt, etc.); Betaine-based surfactants (eg, 2-heptadecyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, lauryldimethylaminoacetic acid betaine, alkyl betaine, amide betaine) , Sulfobetaine, etc.) and the like.

Examples of the lipophilic nonionic surfactant include sorbitan fatty acid esters (for example, sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, etc. Sorbitane trioleate, penta-2-ethylhexylate diglycerol sorbitan, tetra-2-ethylhexylate diglycerol sorbitan, etc.; Glycerin acid, α, α'-glycerin pyroglutamate oleate, glycerin maloic acid, etc.); propylene glycol fatty acid esters (eg, propylene glycol monostearate, etc.); cured castor oil derivative; glycerin alkyl ether, etc. Be done.

Examples of the hydrophilic nonionic surfactant include POE-sorbitan fatty acid esters (for example, POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.). POE sorbit fatty acid esters (eg, POE-sorbit monolaurate, POE-sorbit monooleate, POE-sorbit pentaoleate, POE-sorbit monostearate, etc.); POE-glycerin fatty acid esters (eg, POE- Glycerin monostearate, POE-glycerin monoisostearate, POE-monooleate such as POE-glycerin triisostearate, etc.); POE-fatty acid esters (eg, POE-distearate, POE-monodiolate, ethylene glycol distearate, etc.) POE-alkyl ethers (eg, POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE-cholestanol ether, etc.); , Pluronic, etc.); POE / POP-alkyl ethers (eg, POE / POP-cetyl ether, POE / POP-2-decyltetradecyl ether, POE / POP-monobutyl ether, POE / POP-hydrous lanolin, POE / POP-glycerin ether, etc.); Tetra POE / Tetra POP-ethylenediamine condensates (eg, Tetronic, etc.); POE-Himasi oil hardened castor oil derivative (eg, POE-Himasi oil, POE-hardened castor oil, POE-cured) Sunflower oil monoisostearate, POE-hardened bean oil triisostearate, POE-hardened bean oil monopyroglutamic acid monoisostearic acid diester, POE-hardened bean oil maleic acid, etc.); POE-mitsurou lanolin derivative (eg, POE) -Sorbit Mitsurou, etc.); Arcanolamide (eg, coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.); POE-propylene glycol fatty acid ester; POE-alkylamine; POE-fatty acid amide; sucrose fatty acid ester ; Alkylethoxydimethylamine oxide; Trioleyl phosphate and the like.
When a low-molecular-weight surfactant is used in the present invention, the low-molecular-weight surfactant may be adsorbed on the oil-absorbing hydrophobic powder and affect the oil-absorbing property of the powder. It is preferably mass% or less.

Natural water-soluble polymers include, for example, plant-based polymers (eg, arabic gum, tragacanth gum, galactan, locust bean gum, guagam, tamarind gum, carob gum, karaya gum, carrageenan, pectin, canten, quince seed (malmero), etc. Arge colloid (carrageenan extract), starch (rice, corn, potato, wheat), glycyrrhizinic acid); microbial macromolecules (eg, xanthan gum, dextran, succinoglucan, burran, etc.); animal macromolecules (eg, collagen, casein) , Albumin, gelatin, etc.) and the like.

Examples of the semi-synthetic water-soluble polymer include starch-based polymers (for example, carboxymethyl starch, methyl hydroxypropyl starch, etc.); cellulosic polymers (methyl cellulose, ethyl cellulose, methyl hydroxypropyl cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, etc.). , Hydroxypropyl cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose, crystalline cellulose, cellulose powder, etc.); Alginic acid-based polymers (for example, sodium alginate, propylene glycol alginate, etc.) and the like.

Examples of the synthetic water-soluble polymer include vinyl-based polymers (for example, polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyrrolidone, carboxyvinyl polymer, etc.); polyoxyethylene-based polymers (for example, polyethylene glycol 20,000, 40). , 000, 60,000, etc.); Acrylic polymers (eg, sodium polyacrylate, polyethyl acrylate, polyacrylamide, etc.); Polyethyleneimine; Cationic polymers and the like.

Examples of the thickener other than the water-soluble polymer include dextrin, sodium pectinate, sodium aragitate, cellulose dialkyldimethylammonium sulfate, aluminum magnesium silicate, bentonite, hectrite, A1 Mg silicate (beegam), laponite, and the like. Examples thereof include silicic anhydride.

Examples of the ultraviolet absorber include benzoic acid-based ultraviolet absorbers (for example, paraaminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N, N-dipropoxy PABA ethyl ester, N, N-diethoxyPABA ethyl ester). , N, N-dimethyl PABA ethyl ester, N, N-dimethyl PABA butyl ester, N, N-dimethyl PABA ethyl ester, etc.); Anthranic acid-based ultraviolet absorber (for example, homomentyl-N-acetylanthranilate, etc.); Salicylic acid-based UV absorbers (eg, amyl salicylate, menthyl salicylate, homomentyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropanol phenyl salicylate, etc.); 4-Isopropyl cinnamate, methyl-2,5-diisopropyl cinnamate, ethyl-2,4-diisopropyl cinnamate, methyl-2,4-diisopropyl cinnamate, propyl-p-methoxy cinnamate, isopropyl-p-methoxy cinnamate Mates, isoamyl-p-methoxycinnamates, octyl-p-methoxycinnamates (2-ethylhexyl-p-methoxycinnamates), 2-ethoxyethyl-p-methoxycinnamates, cyclohexyl-p-methoxycinnamates, ethyl- α-Cyano-β-phenylcinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glycerylmono-2-ethylhexanoyl-diparamethoxycinnamate, etc.); benzophenone-based ultraviolet absorbers (eg, 2) , 4-Dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2,2', 4,4'-tetrahydroxybenzophenone, 2-hydroxy -4-Methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4-phenylbenzophenone, 2-ethylhexyl-4'-phenyl-benzophenone -2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, 4-hydroxy-3-carboxybenzophenone, etc.); 3- (4'-methylbenzylidene) -d, l-camper, 3-venge Reden-d, l-camper; 2-phenyl-5-methylbenzotriazole; 2,2'-hydroxy-5-methylphenylbenzotriazole; 2- (2'-hydroxy-5'-t-octylphenyl) benzo Triazole; 2- (2'-hydroxy-5'-methylphenylbenzotriazole; dibenzalazine; dianisoilmethane; 4-methoxy-4'-t-butyldibenzoylmethane; 5- (3,3-dimethyl-2-norbornylidene) ) -3-Pentan-2-one and the like.

Examples of the polyhydric alcohol include divalent alcohols (eg, ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, tetramethylene glycol, 2,3-butylene glycol, and the like. Pentamethylene glycol, 2-butene-1,4-diol, hexylene glycol, octylene glycol, etc.; trivalent alcohol (eg, glycerin, trimethylolpropane, etc.); tetravalent alcohol (eg, 1,2,6) -Pentaerythritol such as hexanetriol); pentavalent alcohol (eg, xylitol, etc.); hexavalent alcohol (eg, sorbitol, mannitol, etc.); polyhydric alcohol polymer (eg, diethylene glycol, dipropylene glycol, triethylene glycol, etc.) Polypropylene glycol, tetraethylene glycol, diglycerin, polyethylene glycol, triglycerin, tetraglycerin, polyglycerin, etc.; divalent alcohol alkyl ethers (eg, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, Ethylene glycol monophenyl ether, ethylene glycol monohexyl ether, ethylene glycol mono2-methylhexyl ether, ethylene glycol isoamyl ether, ethylene glycol benzyl ether, ethylene glycol isopropyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, etc. ); Divalent alcohol alkyl ethers (eg, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol butyl ether, diethylene glycol methyl ethyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl). Ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol isopropyl ether, dipropylene glycol methyl ether, dipropylene glycol ethyl ether, dipropylene glyco Lubutyl ether, etc.); Dihydric alcohol ether esters (eg, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monophenyl ether acetate, ethylene glycol diazibate, ethylene glycol disax) Nate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, propylene glycol monophenyl ether acetate, etc.; glycerin monoalkyl ether (eg, xyl) Alcohols, ceracyl alcohols, batyl alcohols, etc.); Sugar alcohols (eg, sorbitol, martitol, maltotriose, mannitol, erythritol, etc.); Glysolid; tetrahydrofurfuryl alcohol; POE-tetrahydrofurfuryl alcohol; POP- Butyl ether; POP / POE-butyl ether; tripolyoxypropylene glycerin ether; POP-glycerin ether; POP-glycerin ether phosphoric acid; POP / POE-pentaneerythritol ether, polyglycerin and the like.

Examples of the monosaccharide include tricarbose (eg, D-glycerylaldehyde, dihydroxyacetone, etc.); tetracarbose (eg, D-erythulose, D-elittlerose, D-treose, etc.); pentacarbose (eg, L). -Arabinose, D-xylulose, L-lyxose, D-arabinose, D-ribose, D-libulose, D-xylulose, L-xylulose, etc.); , D-galactose, D-fructose, L-galactose, L-mannose, D-tagatose, etc.; seven-carbon sugar (eg, aldoheptose, heprose, etc.); eight-carbon sugar (eg, octulose, etc.); 2-deoxy-D-ribose, 6-deoxy-L-galactose, 6-deoxy-L-mannose, etc.; amino sugars (eg, D-glucosamine, D-galactosamine, sialic acid, aminouronic acid, muramic acid, etc.); Examples thereof include uronic acid (for example, D-glucuronic acid, D-mannuronic acid, L-glulonic acid, D-galacturonic acid, L-isulonic acid, etc.).

Examples of oligosaccharides include sucrose, gunthianose, umbelliferose, lactose, planteos, isolikunoses, α, α-trehalose, raffinose, lycnoses, umbilicin, stachyose velvas and the like.
Examples of amino acids include neutral amino acids (eg, threonine, cysteine, etc.); basic amino acids (eg, hydroxylysine, etc.) and the like. Examples of the amino acid derivative include acyl sarcosine sodium (lauroyl sarcosine sodium), acyl glutamate, acyl β-alanine sodium, glutathione, pyrrolidone carboxylic acid and the like.

Examples of the organic amine include monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-methyl-1-propanol and the like. Can be mentioned.

Examples of the alkylene oxide derivative include POE (9) POP (2) dimethyl ether, POE (14) POP (7) dimethyl ether, POE (10) POP (10) dimethyl ether, POE (6) POP (14) dimethyl ether, and POE ( 15) POP (5) dimethyl ether, POE (25) POP (25) dimethyl ether, POE (7) POP (12) dimethyl ether, POE (22) POP (40) dimethyl ether, POE (35) POP (40) dimethyl ether, POE ( 50) POP (40) dimethyl ether, POE (55) POP (30) dimethyl ether, POE (30) POP (34) dimethyl ether, POE (25) POP (30) dimethyl ether, POE (27) POP (14) dimethyl ether, POE ( 55) POP (28) dimethyl ether, POE (36) POP (41) dimethyl ether, POE (7) POP (12) dimethyl ether, POE (17) POP (4) dimethyl ether and the like can be mentioned.

Examples of the metal ion sequestering agent include 1-hydroxyethane-1,1-diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid tetrasodium salt, disodium edetate, trisodium edetate, and tetrasodium edetate. , Sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid, trisodium ethylenediaminehydroxyethyl triacetate and the like.

Examples of the antioxidant aid include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, kephalin, hexametaphosphate, phytic acid, ethylenediaminetetraacetic acid and the like.

Other compoundable ingredients include, for example, preservatives (ethylparaben, butylparaben, etc.); whitening agents (eg, placenta extract, royal jelly extract, arbutin, etc.); blood circulation promoters (nicotinic acid, benzyl nicotinate, nicotin, etc.) Acid tocopherol, nicotinic acid β-butoxyester, minoxydil or its relatives, vitamin Es, γ-oryzanol, alkoxycarbonylpyridine N-oxide, carpronium chloride, and acetylcholine or derivatives thereof, etc.; various extracts (eg, ginger, ginger, etc.) Ubaku, Ouren, Shikon, Birch, Biwa, Carrot, Aloe, Zeniaoi, Iris, Grape, Hechima, Yuri, Saffron, Senkyu, Shokyu, Otogirisou, Ononis, Garlic, Togarashi, Chinpi, Touki, Button, Seaweed, etc.) Agents (eg, pantenyl ethyl ether, nicotinamide, biotin, pantothenic acid, royal jelly, cholesterol derivatives, etc.); antilipolytic agents (eg, pyridoxines, thiantoll, etc.) and the like.

The dosage form of the oil-in-water composition of the present invention is arbitrary, and any dosage form such as solution type, emulsification type, lotion, gel, mist, spray, mousse, etc. may be used, but particularly as a foundation or anti-shiny agent. It is preferable to use it.

Hereinafter, preferred embodiments of the present invention will be described in detail.

First, the test method will be described.
(Distributed state)
The dispersed state of the prepared sample was confirmed with a microscope. When viewed at 100x magnification, the state where there was no agglomerate in the field of view was A, 10 or less was B, 50 or less was C, and more was D, and A and B were judged to be in a good dispersed state.
(viscosity)
Each sample was measured with a BL type viscometer (manufactured by Shibaura System Co., Ltd.), rotor No. 3, 12 rpm, 60 seconds, and 30 ° C.

(Oil absorption)
(1) Take 2 g of the sample on a glass plate, add glyceryl tri2-ethylhexanoate little by little from the puret to the center of the sample, and knead the whole thoroughly with a spatula each time.
(2) Repeat this operation, and set the end point at the amount at which glyceryl tri2-ethylhexanoate exudes from the sample and does not enter any more.
(3) Obtain the amount of glyceryl tri2-ethylhexanoate required for this, and calculate the oil absorption amount from the following formula.
Oil absorption = [(glyceryl tri2-ethylhexanoate) / (powder sample)] x 100
(Usage feeling when applied: Smooth feeling)
(1) Apply 0.4 g of sample to the inside of the upper arm, and perform one reciprocation per second in a range of 2 cm x 4 cm.
(2) Measure the time when you feel that the smoothness does not change any more (feel change time)
(3) Evaluation Criteria A Very Smooth B Smooth C Slightly Smooth D Not Smooth First, the present inventors conducted the tests shown in Table 1 below, without deteriorating the coating feeling such as elongation of the liquid foundation. We examined how to give the powdery foundation a smooth feel.

Table 1

As shown in Table 1 above, when the resin powder is not blended (Test Example 1-1), a smooth feeling of use cannot be obtained, and it is difficult to formulate unless a so-called surfactant is used. It was. Further, when the crosslinked polymethylmethacrylate porous powder was used, the dispersibility of the powder was poor and it was difficult to formulate the powder unless ethyl alcohol was added (Test Example 1-2).
On the other hand, when the crosslinked polymethylmethacrylate porous powder is added to the dispersion medium in which ion-exchanged water and ethyl alcohol are mixed, a good powder dispersion is formed and the powder hardly floats. From this, it is shown that the porous powder takes in the aqueous medium, and while maintaining the good spreadability derived from the oil content, the stickiness due to the oil content is reduced by rubbing on the skin for about 10 seconds. It was found that it disappeared and a smooth feeling of use was obtained (Test Example 1-3). In this regard, we observed the drying process of the composition. The results are shown in FIG. That is, 0.01 g of this product was placed on a slide glass, spread with a toothpick and dispersed, and the drying process was observed with a microscope at a magnification of 40 times without placing a cover glass. The photo on the left shows immediately after, the photo in the center shows 30 seconds after application, and the photo on the right shows 1 minute after application. As shown in FIG. 1, it was confirmed that in the composition (or immediately after application), the solvent existing so as to be surrounded by the crosslinked polymethacrylate porous powder disappears with drying.

Furthermore, the present inventors have investigated the oil-absorbing function on the skin, which is characteristic of the present invention. That is, prepare a mixture of 1. 80% water, 10% ethanol and 10% crosslinked polymethylmethacrylate porous powder, and 2. a mixture of 90% water and 10% crosslinked polymethylmethacrylate porous powder. Samples were prepared by stirring each with a disper at a rate of 2000 rpm for 1 minute. FIG. 2 is a photograph of a sample immediately after preparation and after standing for 1 day.
Immediately after stirring and adjusting, both samples are pure white, and both appear to be the same, but when left to stand for a day, the upper part of 1. is transparent, and the crosslinked polymethylmethacrylate porous powder is almost settled. ing. This suggests that the water-soluble component composed of water / EtOH is incorporated into the pores of the crosslinked polymethylmethacrylate porous powder and precipitates due to the increased specific gravity.
On the other hand, if only the water in 2. is used, a part of the porous powder will settle, but most of it will float on the water surface.

From these, it is considered that the crosslinked polymethylmethacrylate is a hydrophobic powder, and when the dispersion medium is composed only of water, the absorption amount of the dispersion medium (water) is very small, while the organic solvent is mixed. It is understood that the crosslinked polymethylmethacrylate absorbs the dispersion medium (aqueous medium) in the aqueous medium.

Next, the present inventors examined a powder dispersion medium (aqueous medium). The results are shown in Table 2.
Table 2

As shown in Table 2 above, both ethyl alcohol and isopropyl alcohol show almost the same tendency, and when the blending amount of the volatile organic solvent in the aqueous medium is 5% by mass or more, formulation suitability and good usability are obtained. I was able to. If it is less than 5% by mass, the dispersibility and absorbency with respect to the oil-absorbing hydrophobic powder may not be sufficiently ensured. Further, it was possible to obtain a good range of about 7 to 10 seconds for the time for changing from the oily feeling with good spreadability at the beginning of application to the smooth feeling (feeling change time). According to the studies by the present inventors, if the tactile change time is less than 5 seconds, the coating property may be slightly difficult, while if it exceeds 20 seconds, it is often not judged that the coating feeling is smooth. It has become clear.
In order to obtain the effect of the present invention, there is no particular upper limit on the blending amount of the organic solvent, but considering the use in foundations and the like, the amount of the organic solvent in the aqueous medium is preferably about 30% by mass.

In addition, the present inventors have studied various oil-absorbing powders. The results are shown in Table 3.
Table 3

From the results in Table 3, even if it is a hydrophobic powder, if the oil absorption amount is less than 90% by mass with respect to the powder, it is not possible to sufficiently improve the usability (Test Example 3-1), and the oil absorption property to some extent. However, hydrophilic silica cannot obtain good formulation suitability (Test Example 3-2).
On the other hand, the hydrophobic powder having an oil absorption amount of 90% by mass or more was able to obtain an effect of improving the usability regardless of whether or not it was porous (Test Examples 3-3 to 3-7).

In addition, the present inventors have investigated the blending amount of the oil-absorbing hydrophobic powder. The results are shown in Table 4.
Table 4

From Table 4, it is understood that the blending amount of the oil-absorbing hydrophobic powder in the composition is 5 to 25% by mass, particularly preferably 10 to 20% by mass.

表５より明らかなように、油分種にかかわらず本発明の効果を発揮することができるが、好ましくは比較的低粘度（１００mPa・s以下）のエステル油が好ましく、シリコーン油、炭化水素油は組成物粘度が上昇しスフレ状となった。 In addition, the present inventors examined the oil content. The results are shown in Table 5.
Table 5

As is clear from Table 5, the effects of the present invention can be exhibited regardless of the oil content, but ester oils having a relatively low viscosity (100 mPa · s or less) are preferable, and silicone oils and hydrocarbon oils are preferable. The viscosity of the composition increased and it became souffle-like.

In addition, the present inventors have focused on the relationship between the oil-absorbable amount and the oil content of the oil-absorbing hydrophobic powder. The results are shown in Table 6.
Table 6

From Table 6 above, when the amount of oil is 80% or less of the oil-absorbable amount, an extremely good usability can be obtained, but up to about 130%, the effect of improving the usability can be exhibited. However, if it exceeds 150%, the tactile change time becomes long, and it becomes difficult to realize a smooth feeling of use.

In addition, the present inventors investigated the improvement of powder sedimentation in the preparation. That is, the powder may settle in the formulation, making it impossible to redisperse the powder in the solvent. Therefore, as a result of examining the improvement of sedimentation, as shown in Table 7, xanthan gum was found to have an effect of improving sedimentation, and the amount of xanthan gum compounded was about 0.03 to 0.5% by mass in consideration of the increase in viscosity. preferable.
The evaluation was evaluated as ◯ when the powder was hardly settled in the solvent and × when the settling was observed in the sample stored at 50 ° C. for 4 weeks.

Table 7

Claims (5)

Water and an aqueous medium containing 5 to 30% by mass of a water-soluble and volatile organic solvent in the aqueous medium,
The oil content dispersed in the aqueous medium is 15 to 130% by mass with respect to the maximum oil-absorbable amount of the following oil-absorbing hydrophobic powder.
An oil-absorbent hydrophobic powder capable of absorbing the aqueous medium and the oil component and having a maximum oil-absorbable amount of 90% by mass or more with respect to the oil-absorbing hydrophobic powder was added to the composition in an amount of 5 to 25% by mass.
Dispersants selected from carboxyvinyl polymers, sodium polyacrylates, acrylic acids and alkyl methacrylate copolymers,
Including
An oil- in-water composition characterized in that the oil-absorbing hydrophobic powder holds an aqueous medium in the composition. The oil-in-water type composition according to claim 1, wherein the oil-absorbing hydrophobic powder is porous. In the composition according to claim 1 or 2, the oil-absorbing hydrophobic powder is an oil-in-water composition containing crosslinked polymethylmethacrylate as a main material. An oil-in-water composition comprising xanthan gum in the composition according to any one of claims 1 to 3. The oil-in-water composition according to any one of claims 1 to 4, wherein the oil dispersed in the aqueous medium contains an ester oil.

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