Water-based components

Abstract

To provide means for easily solubilizing an oil-based component in an aqueous composition, creating a transparent appearance.SOLUTION: An aqueous composition contains hydrolyzed silk, a derivative thereof and / or a salt thereof, polyether-modified silicone with a melting point of 25-55°C, and oil-based component.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to an aqueous composition. Background Art

[0002] Aqueous cosmetics such as lotions are widely used for penetrating the skin and imparting a moisturizing feel. It is common to blend lipophilic components into aqueous cosmetics, and the lipophilic components are usually solubilized in an aqueous medium. Such aqueous cosmetics are preferred to be transparent because they can allow simultaneous administration of lipophilic components and hydrophilic components and have excellent aesthetic appearance (see Patent Document 1, etc.). Prior Art Documents Patent Documents

[0003] Patent Document 1 Japanese Patent Laid-Open No. 2013-256476 Summary of the Invention Problems to be Solved by the Invention

[0004] Generally, various oily components are blended in cosmetics, but some of these are difficult to solubilize in aqueous cosmetics. In particular, essential oils, oily fragrances, silicone oils and the like are considered to be more difficult to solubilize than many mineral oils, ester oils and the like. In view of such circumstances, an object of the present invention is to provide an aqueous composition in which oily components are easily transparently solubilized. Means for Solving the Problems

[0005] As a result of intensive studies conducted by the present inventors to solve the above problems, they have found that the above problems can be solved by combining hydrolyzed silks and a predetermined polyether-modified silicone, and have completed the present invention.

[0006] That is, the present invention is as follows. [1] An aqueous composition comprising hydrolyzed silk, its derivatives and / or salts thereof, polyether-modified silicone having a melting point of 25-55°C, and an oily component. [2] The composition according to [1], wherein the derivative of the hydrolyzed silk is lauroyl hydrolyzed silk. [3] The composition according to [1] or [2], wherein the content of hydrolyzed silk, its derivatives and / or salts thereof is 0.1 to 5% by mass of the whole composition. [4] The amount of the polyether-modified silicone is, relative to the total composition 0.1 A composition according to any one of [1] to [3], comprising approximately 10% by mass. [5] The composition according to any one of [1] to [4], wherein the mass ratio of the content of hydrolyzed silk, its derivatives and / or salts thereof to the content of the polyether-modified silicone is 10:1 to 1:10. [6] The composition according to any one of [1] to [5], wherein the content of the oily component is 0.001 to 5% by mass relative to the whole composition. [Effects of the Invention]

[0007] The present invention provides an aqueous composition in which an oily component is transparently solubilized and incorporated. [Modes for carrying out the invention]

[0008] The aqueous composition of the present invention comprises hydrolyzed silk, its derivatives and / or salts thereof, with a melting point of 2 It contains polyether-modified silicone and oily components, with a temperature range of 5-55°C.

[0009] In this specification, hydrolyzed silk, its derivatives, and / or salts thereof are collectively referred to as "hydrolyzed silks." Hydrolyzed silk refers to peptides obtained by hydrolyzing the proteins of silk fibers. They are typically obtained by acid treatment, alkali treatment, enzyme treatment, etc. The size of the peptides is not particularly limited; they are usually of a size suitable for use in topical skin preparations such as cosmetics. While commercially available peptides have a number-average molecular weight of around 1000, they may contain larger or smaller peptides, and may also contain free amino acids. As mentioned above, hydrolyzed silks contain peptide structures and typically include hydrophobic and hydrophilic amino acid residues, thus possessing an amphiphilic structure. Therefore, in the present invention, they are thought to function similarly to surfactants, enabling the transparent and stable solubilization of even oily components that are difficult to solubilize in aqueous media.

[0010] Examples of derivatives of hydrolyzed silk include alkyl adducts which may have various functional groups, and examples of salts thereof include sodium salts, potassium salts, calcium salts, etc., but are not particularly limited. Specifically, examples include sodium lauroyl hydrolyzed silk, sodium stearoyl hydrolyzed silk, (hydrolyzed silk / PG-propylmethylsilanediol) crosspolymer, N-[2-hydroxy-3-[3-(dihydroxymethylsilyl)propoxy]propyl] hydrolyzed silk, dihydroxymethylsilylpropoxyPG hydrolyzed silk, dihydroxymethylsilylpropoxyhydroxypropyl hydrolyzed silk, silicone resin hydrolyzed silk, hydrolyzed silk ethyl, stearyldimethylammoniohydroxypropyl chloride hydrolyzed silk, N-[2-hydroxy-3-(lauryldimethylammonio)propyl] hydrolyzed silk, N-[2-hydroxy-3-(trimethylammonio)propyl] hydrolyzed silk, trimethylammoniohydroxypropyl chloride hydrolyzed silk, and coconut oil alkyldimethylammoniohydroxypropyl chloride hydrolyzed silk. Of these, lauroyl hydrolyzed silk or its salts are particularly preferred.

[0011] The hydrolyzed silk content in the aqueous composition of the present invention is preferably 0.1 to 5% by mass, more preferably 0.15 to 3% by mass, and even more preferably 0.2 to 2% by mass, relative to the total composition. Using it within this range makes it easier to stably solubilize oily components.

[0012] The polyether-modified silicone essentially contained in the aqueous composition of the present invention refers to a silicone having a melting point of 25 to 55°C and possessing a siloxane skeleton and a polyoxyalkylene group. It may further contain other functional groups. Here, the siloxane skeleton refers to a so-called silicone chain, and examples include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, and methylhydrogenpolysiloxane. The length of the silicone chain is not particularly limited and may be of a size commonly used in cosmetics, etc. Furthermore, the polyether-modified silicone may be a block copolymer type containing a chain of polyoxyalkylene groups and a silicone chain in the main chain, or a terminal-modified type in which polyoxyalkylene groups are bonded as side chains of the siloxane skeleton. The number of moles of oxyalkylene added to the polyoxyalkylene group in the polyether-modified silicone is preferably 4 to 40, more preferably 10 to 32.

[0013] Specific examples of polyether-modified silicones with a melting point of 25-55°C include bisPEG-18 methyl ether dimethylsilane (melting point 36-42°C, commercially available products such as "2501 CosmeticWax" (Toray Dow Corporation)), bisPEG-15 methyl ether dimethicone (melting point approximately 30°C, commercially available products such as "DMC 6038" (Wacker Corporation)), PEG-32 methyl ether dimethicone (melting point 45°C, commercially available products such as "KF-6004" (Shin-Etsu Chemical Co., Ltd.)), and PEG-17 dimethicone (melting point 28°C, commercially available products such as "Silsoft895" (MOMENTIVE Corporation)). One or more types of polyether-modified silicones with a melting point of 25-55°C may be used.

[0014] In the aqueous composition of the present invention, the content of polyether-modified silicone with a melting point of 25 to 55°C is preferably 0.1 to 10% by mass, more preferably 0.3 to 5% by mass, and still more preferably 0.5 to 2% by mass, relative to the total mass of the composition. Use within this range makes it easy to stably solubilize oily components.

[0015] In the aqueous composition of the present invention, the mass ratio of the total content of hydrolyzed silks to the content of polyether-modified silicone with a melting point of 25 to 55°C is preferably 10:1 to 1:10, more preferably 5:1 to 1:5, and still more preferably 3:1 to 1:3. Use within this range makes it easy to stably solubilize oily components.

[0016] The oily component that the aqueous composition of the present invention essentially contains refers to so-called oily agents, oil-soluble components, and the like, and specifically refers to a component that undergoes phase separation from water after being suspended in water at 25 to 65°C and allowed to stand for 1 hour. Preferred examples of the oily component include essential oils, oily fragrances, and silicone oils.

[0017] Essential oils are mixtures of water-insoluble to poorly water-soluble organic compounds contained in plants, generally contain volatile organic compounds, and have aromatic properties depending on the raw material. For the essential oil used in the present invention, those produced by conventional methods or commercially available products can be used. There is no particular limitation on the collection site of the essential oil in the present invention, and examples include flowers, branches, leaves, roots, fruits, and buds, but whole plants can also be used. There is also no particular limitation on the extraction method of the essential oil in the present invention, and examples include steam distillation, solvent extraction, pressing, adsorption / absorption method, infusion method, and a method of collecting liquid exuded by damaging plants, with steam distillation being preferred.

[0018] Oily fragrances are fragrances exhibiting oil solubility, and can be used regardless of whether they are synthetic or natural. Those produced by conventional methods or commercially available products can be used.

[0019] As essential oils and oily fragrances, but not limited to, examples include acetylcedrene, amyl cinnamaldehyde, allyl amyl glycolate, β-ionone, iso-esuper, isobutylquinoline, iris oil, ylone, indole, ylang-ylang oil, undecanal, undecenal, γ-undecalactone, estragole, eugenol, oakmoss, opoponax resinoid, orange oil, eugenol, aurantiol, galacsolid, carvacrol, L-carbone, camphor, canone, carrot seed oil, clove oil, methyl cinnamate, geraniol, geranyl nitrile, isobornyl acetate, geranyl acetate, dimethylbenzylcarbinyl acetate, styraryl acetate, cedyl acetate, terepinel acetate, pt- acetate Butylcyclohexyl, Vetiveryl Acetate, Benzyl Acetate, Linalyl Acetate, Isopentyl Salicylate, Benzyl Salicylate, Sandalwood Oil, Santal, Cyclamenaldehyde, Cyclopentadecanol, Methyl Dihydrojasmonate, Dihydromyrcenol, Jasmine Absolute, Jasmine Lactone, cis-Jasmone, Citral, Citronenol, Citronellal, Cinnamon Bark Oil, 1,8-Cineole, Cinnamaldehyde, Styrax Resinoid, Cedarwood Oil, Cedren, Cedrol, Celery Seed Oil, Thyme Oil, Damascone, Damascenone, Thymol, Tuberose Absolute, Decanal, Decalactone, Terpineol, γ-Terpinene, Tripral, Nerol, Nonanal, 2,Examples include 6-nonadienol, nonalactone, patchouli alcohol, vanilla absolute, vanillin, basil oil, patchouli oil, hydroxycitronellal, α-pinene, piperitone, phenethyl alcohol, phenylacetaldehyde, petitgrain oil, hexyl cinnamaldehyde, cis-3-hexenol, peruvian balsam, vetiver oil, vetiverol, peppermint oil, pepper oil, heliotropin, bergamot oil, benzyl benzoate, borneol, myrrhizinoid, musk ketone, methylnonylacetaldehyde, γ-methylionone, menthol, L-menthol, L-menthone, eucalyptus oil, β-ionone, lime oil, lavender oil, D-limonene, linalool, liral, lilial, lemon oil, rose absolute, rose oxide, rose oil, rosemary oil, etc.

[0020] Examples of silicone oils include dimethylpolysiloxane (dimethicone), cyclopentasiloxane, decamethylcyclopentasiloxane, caprylyl methicone, (dimethicone / vinyl dimethicone) crosspolymer, and (dimethicone / phenylvinyl dimethicone) crosspolymer.

[0021] In addition, other oily components besides essential oils, oily fragrances, and silicone oils include polar oils, natural oils, hydrocarbon oils, and so on.

[0022] As polar oils, synthetic ester oils include isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearylate, ethylene glycol di-2-ethylhexylate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, glycerin di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexylate, trimethylolpropane triisostearate, pentaneerythritol tetra-2-ethylhexylate, and tri -2-Glyceryl ethylhexanoate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glyceryl trimyristate, glyceride tri-2-heptyl undecanoate, methyl castor oil fatty acid ester, oleic acid oil, cetostearyl alcohol, acetoglyceride, 2-heptyl undecyl palmitate, diisobutyl adipate, N-lauroyl- Examples include L-glutamic acid-2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebatate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebatate, 2-ethylhexyl succinate, ethyl acetate, butyl acetate, amyl acetate, triethyl citrate, octyl methoxycinnamate, and the like.

[0023] Examples of natural oils include avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, peach kernel oil, wheat germ oil, sasanqua oil, castor oil, linseed oil, safflower oil, cottonseed oil, elm oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, cinnamon oil, Japanese tuni oil, jojoba oil, wheat germ oil, sunflower oil, triglycerin, glyceryl trioctanoate, and glyceryl triisopalmitate.

[0024] Examples of hydrocarbon oils include isododecane, isohexadecane, squalane, hydrogenated poly(C6-12) olefin, and hydrogenated polyisobutene.

[0025] The aqueous composition of the present invention may use one or more oily components in combination.

[0026] The oily component content in the aqueous composition of the present invention is preferably 0.001 to 5% by mass, more preferably 0.01 to 1% by mass, and even more preferably 0.1 to 0.5% by mass, as a total amount of the oily component alone or in combination, relative to the entire composition. From the viewpoint of solubilization stability, 5% by mass or less is preferred, and from the viewpoint of the effect on the composition, 0.001% by mass or more is preferred.

[0027] The aqueous composition of the present invention can be produced by conventional methods. That is, the mixing order is not particularly limited, and it can be obtained by mixing and solubilizing the constituent components in any order and method.

[0028] The aqueous composition of the present invention typically uses water as its main medium. Specifically, it contains water in an amount of preferably 50% by mass or more, more preferably 55% by mass or more, and even more preferably 60% by mass or more of the total composition. The aqueous composition of the present invention is in a so-called solubilized form, where the constituent components are soluble in water, and is therefore usually transparent. However, if it contains hydrophobic powders or the like, these may settle upon standing, resulting in a transparent medium portion. In this specification, transparency can be determined by visually confirming the absence of sediment or turbidity, or quantitatively by a visible light transmittance (wavelength 600 nm, optical path length 1 cm) measured with a spectrophotometer at 25°C, which is in the range of 70 to 100, with the control distilled water set to 100.

[0029] The aqueous composition of the present invention is preferably in the form of a topical skin preparation, and more specifically, in the form of a cosmetic, quasi-drug, or pharmaceutical.

[0030] The aqueous composition of the present invention may optionally contain other components, as long as they do not impair the effects of the present invention. Such optional ingredients can be anything commonly used in topical skin preparations such as cosmetics, and examples include alcohol, ether, powder, humectant, other surfactant, metal ion chelating agent, pearlescent agent, amino acids, organic amines, polymer emulsion, pH adjuster, vitamins, antioxidant, preservative, water-soluble polymer, and various active ingredients.

[0031] Examples of alcohols include dihydric alcohols such as ethylene glycol, 1,3-butylene glycol, trimethylene glycol, 1,2-butylene glycol, propylene glycol, dipropylene glycol, propanediol, 1,2-pentanediol, 3-methyl-1,3-butanediol, tetramethylene glycol, 2,3-butylene glycol, pentamethylene glycol, 2-butene-1,4-diol, hexylene glycol, and octylene glycol; trihydric alcohols such as trimethylolpropane; tetrahydric alcohols such as pentaerythritol; pentahydric alcohols such as xylitol; polyhydric alcohol polymers such as triglycerin, tetraglycerin, and polyglycerin; sugar alcohols such as starch-degrading sugar-reducing alcohols; and polyglycerin. Alcohol alkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol monohexyl ether, ethylene glycol mono-2-methylhexyl ether, ethylene glycol isoamyl ether, ethylene glycol benzyl ether, and ethylene glycol isopropyl ether; Alcohol alkyl ethers such as diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl 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, and dipropylene glycol butyl ether; Glycerin monoalkyl ethers such as xyl alcohol, ceracyl alcohol, and batyl alcohol; Alcohol polymers such as diethylene glycol, triethylene glycol, polypropylene glycol, tetraethylene glycol, and polyethylene glycol; Examples include glycolid; tetrahydrofurfuryl alcohol; POE-tetrahydrofurfuryl alcohol; POP-butyl ether; POP·POE-butyl ether; tripolyoxypropylene glycerin ether; POP-glycerin ether; POP-glycerin ether phosphate; POP·POE-pentaneerythritol ether, etc.

[0032] Ethers include those that fall under the category of alcohols mentioned above, Examples include ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol methyl ethyl ether, 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 disuccinate, 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, and propylene glycol monophenyl ether acetate.

[0033] The shape of the powder is not particularly limited, and can be spherical, needle-shaped, plate-shaped, etc. For example, inorganic powders (e.g., talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, red mica, biotite, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, silica, alumina, zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorine apatite, hydroxyapatite, ceramic acid) (e.g., acrylic powder, boron nitride, etc.); Organic powders (e.g., polyamide resin powder (nylon powder), polyethylene powder, poly(meth)acrylate powder, polystyrene powder, styrene-acrylic acid copolymer resin powder, silicone resin powder, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, etc.); Metal soaps (e.g., zinc myristate, calcium palmitate, aluminum stearate); Inorganic white pigments (e.g., titanium dioxide, zinc oxide, etc.); Inorganic red pigments (e.g., iron oxide (red iron oxide), iron titanate, etc.); Inorganic brown pigments) (e.g., γ-iron oxide); inorganic yellow pigments (e.g., yellow iron oxide, yellow ochre, etc.); inorganic black pigments (e.g., black iron oxide, lower titanium oxide, etc.); inorganic purple pigments (e.g., mango violet, cobalt violet, etc.); inorganic green pigments (e.g., chromium oxide, chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments (e.g., ultramarine, Prussian blue, etc.); pearl pigments (e.g., 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 (e.g. For example, aluminum powder, copper powder, etc.); organic pigments such as zirconium, barium, or aluminum lake (for example, organic pigments such as Red 201, Red 202, Red 204, Red 205, Red 220, Red 226, Red 228, Red 405, Orange 203, Orange 204, Yellow 205, Yellow 401, and Blue 404; Red 3, Red 104, Red 106, Red 227, Red 230, Red 401, Red 505, Orange 205, Yellow 4, Yellow 5, Yellow 202, Yellow 203, Green 3, and Blue 1, etc.);Examples include natural pigments (e.g., chlorophyll, beta-carotene, etc.).

[0034] Examples of moisturizing agents include chondroitin sulfate, hyaluronic acid, mucoitin sulfate, carotenoid acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO)PO adduct, Rosa rugosa extract, Achillea millefolium extract, and Melilotus extract.

[0035] Other surfactants include anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants other than polyether-modified silicones with a melting point of 25-55°C (other nonionic surfactants).

[0036] Examples of 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 lauryl sulfate triethanolamine, POE lauryl sulfate sodium, etc.); N-acyl sarcosinate (e.g., sodium lauroyl sarcosinate, etc.); higher fatty acid amide sulfonates (e.g., sodium N-myristoyl-N-methyl taurate, sodium coconut oil fatty acid methyl taulide, sodium lauryl methyl taulide, etc.); phosphate salts (e.g., sodium POE oleyl ether phosphate, POE stearyl ether phosphate, etc.); sulfosuccinates (e.g., sodium di-2-ethylhexyl sulfosuccinate, sodium monolauroyl monoethanolamide polyoxyethylene sulfosuccinate, lauryl polypropylene glycol sulfosuccinate) Examples include sodium citrate, alkylbenzene sulfonates (e.g., linear dodecylbenzenesulfonate sodium, linear dodecylbenzenesulfonate triethanolamine, linear dodecylbenzenesulfonate, etc.), higher fatty acid ester sulfates (e.g., hydrogenated coconut oil fatty acid glycerin sulfate sodium, etc.), N-acyl glutamates (e.g., N-lauroyl glutamate monosodium, N-stearoyl glutamate disodium, N-myristoyl-L-glutamate monosodium, etc.), sulfated oils (e.g., belladonna oil, etc.), POE alkyl ether carboxylic acids, POE alkyl allyl ether carboxylic acid salts, α-olefin sulfonates, higher fatty acid ester sulfonates, secondary alcohol sulfates, higher fatty acid alkylolamide sulfates, lauroyl monoethanolamide succinate sodium, N-palmitoyl aspartate ditriethanolamine, sodium caseinate, etc.

[0037] Examples of cationic surfactants include alkyltrimethylammonium salts (e.g., stearyltrimethylammonium chloride, lauryltrimethylammonium chloride, etc.); alkylpyridinium salts (e.g., cetylpyridinium chloride, etc.); distearyldimethylammonium chloride dialkyldimethylammonium salt; poly(N,N'-dimethyl-3,5-methylenepiperidinium) chloride; alkylquaternary ammonium salts; alkyldimethylbenzylammonium salts; alkylisoquinolinium salts; dialkylmolyphonium salts; POE alkylamines; alkylamine salts; polyamine fatty acid derivatives; amyl alcohol fatty acid derivatives; benzalkonium chloride; benzethonium chloride, etc.

[0038] Examples of amphoteric surfactants include imidazoline-based amphoteric surfactants (e.g., 2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.); and betaine-based surfactants (e.g., 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauryldimethylaminoacetic acid betaine, alkyl betaine, amide betaine, sulfobetaine, etc.).

[0039] Other nonionic surfactants include polyether-modified silicones with melting points other than 25-55°C (e.g., polyethylene glycol-10 dimethicone, polyethylene glycol-12 dimethicone, etc.); polyglycerin-modified silicones (e.g., polyglyceryl-3 disiloxane dimethicone, polyglyceryl-3 polydimethylsiloxyethyl dimethicone, etc.); and sorbitan fatty acid esters (e.g., sorbitan monooleate, sorbitan monostearate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate). Examples of non-hydrophilic nonionic surfactants include: diglycerol sorbitan penta-2-ethylhexylate, diglycerol sorbitan tetra-2-ethylhexylate, etc.; glycerin fatty acids (e.g., glyceryl monocottonseed oil fatty acid, glyceryl monoerucate, glyceryl sesquioleate, glyceryl monostearate, glyceryl pyroglutamate α,α'-oleate, glyceryl (monostearate / malate), etc.); propylene glycol fatty acid esters (e.g., propylene glycol monostearate, etc.); POE castor oil and hydrogenated castor oil derivatives (POE castor oil, POE hydrogenated castor oil, etc.); and glycerin alkyl ethers. Furthermore, polyglycerin fatty acid esters (e.g., polyglyceryl monooleate, polyglyceryl monostearate, etc.); POE sorbitan fatty acid esters (e.g., POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan tetraoleate, etc.); POE sorbitan fatty acid esters (e.g., POE sorbitan monolaurate, POE sorbitan monooleate, POE sorbitan pentaoleate, POE sorbitan monostearate, etc.); POE glycerin fatty acid esters (e.g., POE monooleates such as POE 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 cholestanol ether, etc.); POE alkylphenyl ethers (e.g., POE nonylphenyl ether, etc.); Pluronic type ethers (e.g., Pluronic®, etc.); POE·POP alkyl ethers (e.g., POE·POP cetyl ether, POE·POP-2-decyltetradecyl ether, POE·POP monobutyl ether, POE·POP hydrogenated lanolin, POE·POP glycerin ether, etc.); tetra Other examples include POE-tetraPOP ethylenediamine condensates (e.g., Tetronic); POE castor oil hydrogenated castor oil derivatives (e.g., POE castor oil, POE hydrogenated castor oil, POE hydrogenated castor oil monoisostearate, POE hydrogenated castor oil triisostearate, POE hydrogenated castor oil monopyroglutamic acid monoisostearate diester, POE hydrogenated castor oil maleic acid, etc.); POE beeswax-lanolin derivatives (e.g., POE sorbitol 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 amides; sucrose fatty acid esters; alkyl glucosides; alkyl ethoxydimethylamine oxides; and hydrophilic nonionic surfactants such as trioleyl phosphate.

[0040] However, it is preferable that the aqueous cosmetic composition of the present invention substantially does not contain any other surfactants other than polyether-modified silicones having a melting point of 25 to 55°C. Here, "substantially contained" means that the amount of other surfactants is preferably 3% by mass or less, more preferably 1% by mass or less, and even more preferably 0.5% by mass or less of the total cosmetic composition.

[0041] Examples of metal ion chelating agents include 1-hydroxyethane-1,1-diphosphonic acid, tetrasodium 1-hydroxyethane-1,1-diphosphonic acid, disodium edetate, trisodium edetate, tetrasodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetate, and trisodium ethylenediaminehydroxyethyl triacetate.

[0042] Examples of pearlescent agents include glycol distearate and titanium mica.

[0043] Examples of amino acids include neutral amino acids (e.g., threonine, cysteine, etc.) and basic amino acids (e.g., hydroxylysine, etc.). Examples of amino acid derivatives include sodium acyl sarcosinate (sodium lauroyl sarcosinate), acyl glutamate, sodium acyl β-alanine, glutathione, and pyrrolidone carboxylic acid.

[0044] Examples of organic amines include monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, and 2-amino-2-methyl-1-propanol.

[0045] Examples of polymer emulsions include acrylic resin emulsion, ethyl polyacrylate emulsion, acrylic resin liquid, polyacrylic alkyl ester emulsion, polyvinyl acetate resin emulsion, and natural rubber latex.

[0046] Examples of pH adjusting agents include buffering agents such as lactate-sodium lactate, citrate-sodium citrate, and succinate-sodium succinate.

[0047] Examples of vitamins include vitamins A, B1, B2, B6, C, E and their derivatives, pantothenic acid and its derivatives, and biotin.

[0048] Examples of antioxidants include tocopherols, dibutylhydroxytoluene (BHT), butylhydroxyanisole, pyrosulfites, gallic acid esters, phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, kephalin, hexametaphosphorate, phytic acid, and ethylenediaminetetraacetic acid.

[0049] Examples of preservatives include parabens and phenoxyethanol.

[0050] Examples of water-soluble polymers include natural water-soluble polymers such as plant-derived polymers (e.g., carrageenan, starch (rice, corn, potato, wheat), glycyrrhizic acid); microbial polymers (e.g., dextran, pullulan, etc.); and animal-derived polymers (e.g., collagen, casein, albumin, gelatin, etc.). Starch-based polymers (e.g., carboxymethyl starch, methylhydroxypropyl starch, etc.); cellulose-based polymers (hydroxypropyl methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, methylcellulose, ethylcellulose, hydroxypropyl methylcellulose stearoxy ether, sodium cellulose sulfate, carboxymethylcellulose, sodium carboxymethylcellulose, crystalline cellulose, cellulose powder, etc.); Examples of water-soluble polymers used in the synthesis of vinyl polymers (e.g., polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, carboxyvinyl polymer, etc.); polyoxyethylene polymers (e.g., polyethylene glycol 20,000, 40,000, 60,000, etc.); acrylic polymers (e.g., sodium polyacrylate, polyethyl acrylate, polyacrylamide, etc.); polyethyleneimines; and cationic polymers.

[0051] Various active ingredients include, for example, anti-inflammatory agents (e.g., glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.); whitening agents (e.g., placenta extract, saxifrage extract, arbutin, etc.); various extracts (e.g., Phellodendron amurense, Coptis japonica, Lithospermum erythrorhizon, Paeonia lactiflora, Swertia japonica, Birch, Sage, Loquat, Carrot, Aloe vera, Malva sylvestris, Iris ensata, Grape, Coix lacryma-jobi, Luffa gourd, Lily, Saffron, Cnidium officinale, Zingiber officinale, St. John's wort, Ononis sprouts, Garlic, Chili pepper, Citrus unshiu peel, Angelica acutiloba, Seaweed, etc.); and activators (e.g., royal jelly). Examples include photosensitizers, cholesterol derivatives, etc.; blood circulation promoters (e.g., nonyl valenylamide, benzyl nicotinate, β-butoxyethyl nicotinate, capsaicin, gingerol, cantharis tincture, ichthamol, tannic acid, α-borneol, tocopherol nicotinate, inositol hexanicotinate, cyclandelate, cinnarizine, trazoline, acetylcholine, verapamil, cepharanthine, γ-oryzanol, etc.); anti-seborrheic agents (e.g., sulfur, thianthol, etc.); and anti-inflammatory agents (e.g., tranexamic acid, thiotaurine, hypotaurine, etc.). [Examples]

[0052] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist of the invention.

[0053] Aqueous compositions were prepared by mixing the formulation ingredients listed in Table 1. For each of the resulting aqueous compositions, the solubility of the composition was evaluated by a skilled evaluator. The results are shown in Table 1.

[0054] [Table 1]

[0055] <Transparency> Transparency immediately after manufacturing was evaluated according to the following criteria. ◎: Transparent ○: It is almost transparent. △: Slight turbidity or separation is observed. ×: Turbidity or separation is observed.

[0056] <Original> The presence or absence of sediment after 24 hours at 0°C following manufacturing was evaluated according to the following criteria. ○: Does not accept Ori ×: Acknowledge the culprit [Industrial applicability]

[0057] The present invention provides an aqueous composition in which an oily component is transparently solubilized and incorporated. Such a composition is suitable for topical skin preparations such as cosmetics, and meets the needs of consumers seeking excellent functionality and a pleasant appearance, making it highly useful in industry.

Claims

1. The composition contains 0.2 to 2% by mass of an alkyl adduct and / or salt thereof of hydrolyzed silk, 0.1 to 10% by mass of a polyether-modified silicone with a melting point of 25 to 55°C, and 0.001 to 5% by mass of an oily component. An aqueous topical skin preparation wherein the polyether-modified silicone having a melting point of 25 to 55°C has a siloxane skeleton and polyoxyalkylene groups with an addition number of 4 to 40 oxyalkylenes.

2. The topical skin preparation according to claim 1, wherein the alkyl adduct of the hydrolyzed silk is lauroyl hydrolyzed silk or stearoyl hydrolyzed silk.

3. The topical skin preparation according to claim 1 or 2, wherein the polyether-modified silicone is bisPEG-18 methyl ether dimethyl silane or bisPEG-15 methyl ether dimethicone.

4. A topical skin preparation according to any one of claims 1 to 3, wherein the mass ratio of the content of the alkyl adduct and / or salt thereof of hydrolyzed silk to the content of the polyether-modified silicone is 10:1 to 1:

10.

5. The topical skin preparation according to any one of claims 1 to 4, wherein the oily component is selected from essential oils, oily fragrances, and silicone oils.

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