JP2018095611A - Highly-viscous composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly-viscous composition that has an excellent body feeling, and is also excellent in fitness at application and moisture retention of skin after application.SOLUTION: A composition contains a starch-sodium acrylate graft polymer, and water-absorbing powder that satisfies the condition: that (a) a maximum wetting power with water is 2 mN or more or that (b) in at least one point during addition of pure water 1-5 mL/g, a massive state is shown.SELECTED DRAWING: None

Description

  The present invention relates to a highly viscous composition that exhibits excellent richness and is suitable as a cosmetic.

The aqueous gel dosage form is an aqueous type dosage form having an appropriate viscosity, and is often applied to cosmetics such as a cosmetic liquid. The aqueous gel preparation type can provide a fresh feeling of use because it contains less oil than the emulsifier types such as emulsions and creams.
In recent years, cosmetics tend to be required to have a rich touch when applied, a high level of protection and moisturizing feeling on the back skin, and formulas for producing such a touch have been devised. . The same applies to gel formulations, and a rich feeling can be produced by blending thickeners such as carbomers and thickening polysaccharides (Patent Document 1) or blending organic powders (Patent Document 2). Has been reported.

Japanese Patent No. 4185900 Patent 3648722

According to the thickener as described in Patent Document 1, an appropriate viscosity is imparted and a rich feeling can be obtained, but there is a problem that a sticky feeling and a bad feeling are caused by blending in a large amount.
According to the organic powder as described in Patent Document 2, while the freshness and freshness of the back skin can be maintained as they are, a rich feeling at the time of application can be obtained, but in order to achieve a higher level of richness desired by consumers It does n’t come. In addition, the feeling of protection and moisturizing the back skin is unsatisfactory.
In view of such a situation, an object of the present invention is to provide a high-viscosity composition that has an excellent richness and is good in the comfort during application and the moisturizing feeling of the back skin.
In the present specification, “feeling good” means that the composition penetrates into the skin without stickiness when applied to the skin and the skin is well-fitted.

  As a result of intensive studies, the present inventors have found that the above problems can be solved by including a starch / sodium acrylate graft polymer and a specific water-absorbing powder in the composition, thereby completing the present invention. It came.

That is, the present invention is as follows.
[1] A composition containing a starch / sodium acrylate graft polymer and a water-absorbing powder satisfying the following (a) or (b) (hereinafter also referred to as “the composition of the present invention”).
(A) The maximum wetting force by water is 2 mN or more. (B) The state at least at one point when 1-5 mL / g of pure water is added is a block. [2] The starch / sodium acrylate graft polymer The composition according to [1], wherein the content of the water-absorbing powder is 20: 1 to 5: 1 by mass ratio.
[3] In [1] or [2], the total content of the starch / sodium acrylate graft polymer and the water-absorbing powder is 0.85 to 4.0% by mass based on the entire composition. The composition as described.
[4] The composition according to any one of [1] to [3], wherein the water-absorbing powder is one or more selected from bentonite, crystalline cellulose, and fine particle silica.
[5] The composition according to any one of [1] to [4], wherein the content of the starch / sodium acrylate graft polymer is 0.8 to 3.0 mass% with respect to the entire composition. .
[6] The composition according to any one of [1] to [5], wherein a storage elastic modulus in a linear region is 500 Pa or more and a yield stress value is 80 to 900 Pa.
[7] The composition according to any one of [1] to [6], which is in a gel form.
[8] The composition according to any one of [1] to [7], which is an external preparation for skin.

  The present invention provides a high-viscosity composition that has an excellent richness and is excellent in the comfort during application and the moisturizing feeling of the back skin. Since such a composition gives a comfortable feeling to use, it is suitable as an external preparation for skin such as cosmetics.

  The composition of the present invention comprises a starch / sodium acrylate graft polymer and (a) a maximum wetting force by water of 2 mN or more, or (b) at least one point when 1 to 5 mL / g of pure water is added. And a water-absorbing powder satisfying that the state is a block.

The starch / sodium acrylate graft polymer is a sodium salt of starch obtained by graft polymerization of acrylic acid. It plays a role of imparting viscoelasticity to the composition of the present invention. More specifically, a unique formulation can be prepared by producing a rich gel feel with the starch portion and the thickening effect of the sodium acrylate portion.
Commercially available products include, for example, Sanyo Chemical Co., Ltd. Sunfresh ST-100 (center particle size 106 to 850 μm) and Sunfresh ST-100MC (center particle size 20 to 50 μm), Daito Kasei Kogyo Co., Ltd. MAKIMOUSSE7 ( Examples thereof include those having an average particle size of 7.6 μm, MAKIMOUSSE12 (average particle size of 12.9 μm), and MAKIMOUSSE25 (average particle size of 25.8 μm). Among these, although not particularly limited, those having a particle diameter of 7 to 30 μm can be used more preferably.

  In the composition of the present invention, the content of the starch / sodium acrylate graft polymer is preferably 0.8% by mass or more, and 0.8 to 3.0% by mass with respect to the entire composition. Is more preferable, and it is further more preferable that it is 1.0-2.0 mass%. By setting it as such content, it can be set as the property which is calm at the time of application | coating, providing the rich feeling which was excellent in the composition.

In the present invention, the water-absorbing powder has (a) a maximum wetting force by water of 2 mN or more, or (b) a state at least at one point when 1 to 5 mL / g of pure water is added, To meet. Such a water-absorbing powder plays a role of imparting elasticity to the composition and producing an appropriate solid feeling.
Here, (a) the maximum wetting force by water is 0.20 g of the sample on the nylon mesh (mesh diameter 20 μm) placed on the inverted opening of the test tube and inside the test tube. The wettability when the holder with the test tube set therein was immersed in pure water in a 50 mL glass bottle at a depth of 0.5 mm for 180 seconds was measured using a dynamic wettability tester (WET-6200, Resuka Co., Ltd.). The value measured using the product.
In addition, (b) the state at least at one point when 1 to 5 mL / g of pure water is added is a lump, which means that linseed oil is changed to pure water in the JIS K 5101-13-1: 2004 pigment test method. It shall be confirmed by operation. That is, 0.6 g of pure water is gradually added to 3 g of the sample at a time on the measurement plate, and the operation of kneading the pure water into the sample with a pallet knife is repeated each time. When pure water and the sample form a lump state (including paste and dumplings) at at least one point in the middle of adding 1 to 5 mL / g of pure water, the sample powder is It shall satisfy the condition (b).
The water-absorbing powder has a water absorption (water mL / powder g) of 1 mL / g or more as measured by the method of changing linseed oil to pure water in the JIS K 5101-13-1: 2004 pigment test method. There may be something.

  Examples of the water-absorbing powder satisfying the above include water-absorbing clay minerals such as bentonite, montmorillonite, hectorite, kaolinite, illite, marine clay mineral (sea mud), desert rose clay mineral, pascalite, crystalline cellulose, acrylic resin Examples thereof include powders, siloxane polymers, fine particle silica, and the like, and one or more of them can be selected and used. Among these, bentonite, crystalline cellulose, and fine particle silica are particularly preferable.

  In the composition of the present invention, the content of the water-absorbing powder is preferably 0.05 to 1.0% by mass, and preferably 0.1 to 0.5% by mass with respect to the entire composition. More preferred. By setting it as such content, the rich feeling which was excellent in the composition can be provided.

The mass ratio of the starch / sodium acrylate graft polymer and the water-absorbing powder is preferably 20: 1 to 5: 1, and more preferably 10: 1 to 5: 1. . By containing in such a ratio, the excellent rich feeling of the composition and the comfortable feeling of use such as good comfort during application and moisturizing feeling of the back skin can be achieved.
Further, the total content of the starch / sodium acrylate graft polymer and the water-absorbing powder is preferably 0.85 to 4.0% by mass with respect to the whole composition, 0.8 to 3.0 More preferably, it is mass%. If it is less than 0.85% by mass, the richness may be unsatisfactory, and if it is more than 4.0% by mass, it may become sticky during application.

The composition of the present invention has high viscosity, no fluidity, and high elasticity. Specifically, for example, the storage elastic modulus in the linear region when measured under (measurement conditions or the like) is 500 Pa or more, and the yield stress value is 80 to 900 Pa.
By having such physical properties, the composition has a rich feeling and can provide a full feel to the user. In the present specification, the “bright feeling” refers to a feeling that gives a supple feeling with a rich feel. If there is a rich feeling, even if the dosage form is a gel, it becomes a rich and sticky feel like a cream and can give satisfaction to the user.

The composition of the present invention usually contains water and is held by a thickener or water-absorbing powder to form a gel.
40-90 mass% is preferable with respect to the whole composition, and, as for content of water, 60-90 mass% is more preferable.

The dosage form of the composition of the present invention is not particularly limited, such as a lotion, gel, emulsifier type such as cream or emulsion, but is preferably a gel, more preferably an aqueous gel.
Because it is gel-like, it provides a fresh and refreshing feeling of use and a moisturizing feeling of the back skin, giving the user a sense of satisfaction with an unprecedented feel, and the composition of the present invention. The features can be fully utilized.

  The composition of the present invention can be preferably applied as a skin external preparation. More preferably, it can be applied as a cosmetic (including quasi-drugs), and is more preferably applied to skin care cosmetics and makeup cosmetics.

  The composition of this invention can be manufactured with a normal preparation method according to a dosage form.

  As long as the effects of the present invention are not impaired, the cosmetics of the present invention can optionally contain other components usually used in cosmetics. Examples of such optional components include other powders, oils, alcohols, humectants, surfactants, UV protection agents, sequestering agents, monosaccharides, oligosaccharides, polysaccharides, amino acids, organic amines, and polymer emulsions. , PH adjusters, vitamins, antioxidants, preservatives, water-soluble polymers, fragrances, various active ingredients, and the like.

  Other powders are not limited in shape, such as spherical, acicular, plate-like, etc. For example, inorganic powders (eg, talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica) , Mica, biotite, permiculite, 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, fluorapatite, hydroxyapatite, ceramic powder, metal soap (eg, zinc myristate, calcium palmitate, aluminum stearate), boron nitride, etc .; organic powder (eg, polyamide resin) Powder (nylon powder), polyethylene Powder, poly (meth) methacrylate powder, polystyrene powder, copolymer resin powder of styrene and acrylic acid, silicone resin powder, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, etc.); inorganic white pigment ( For example, titanium dioxide, zinc oxide, etc.); inorganic red pigments (eg, iron oxide (Bengara), iron titanate, etc.); inorganic brown pigments (eg, γ-iron oxide, etc.); inorganic yellow pigments (eg, Yellow iron oxide, ocher, etc.); inorganic black pigments (eg, black iron oxide, low-order titanium oxide, 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, bitumen, etc.); pearl pigments (eg, titanium oxide coated mica, acid) Titanium 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.); organic pigments such as zirconium, barium or aluminum lake (For example, 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 organic pigments such as 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 202, yellow 203, green 3 and blue 1); natural pigments (for example, chloroph And β-carotene).

Examples of the oil agent include silicone oil, polar oil, natural oil, hydrocarbon oil and the like.
Silicone oils include dimethylpolysiloxane (dimethicone, preferably having a viscosity of 10 to 10000 cs), cyclopentasiloxane, decamethylcyclopentasiloxane, caprylyl methicone, (dimethicone / vinyl dimethicone) crosspolymer, (dimethicone / phenylvinyl dimethicone). ) Cross polymer and the like.

Polar oils include synthetic ester oils such as isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, lactic acid Cetyl, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearylate, ethylene glycol di-2-ethylhexylate, dipentaerythritol fatty acid ester, N-alkylglycol monoisostearate, neopentyl dicaprate Glycol, diisostearyl malate, glycerin di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexylate Trimethylolpropane triisostearate, pentaneerythritol tetra-2-ethylhexylate, glyceryl tri-2-ethylhexanoate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glyceryl trimyristate , Tri-2-heptylundecanoic acid glyceride, castor oil fatty acid methyl ester, oleic acid oil, cetostearyl alcohol, acetoglyceride, 2-heptylundecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyl Dodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, palmitic 2-hexyl decyl, 2-hexyldecyl adipate, sebacic acid diisopropyl, 2-ethylhexyl succinate, ethyl acetate, butyl acetate, amyl acetate, triethyl citrate, octyl methoxycinnamate and the like.

Natural oils such as 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 oil, castor oil, flaxseed oil, safflower Oil, cottonseed oil, eno oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, cinnagari oil, Japanese kiri oil, jojoba oil, germ oil, triglycerin, trioctanoic acid glycerin, triisopalmitic acid glycerin, etc. Can be mentioned.
Examples of the hydrocarbon oil include isododecane, isohexadecane, squalane, hydrogenated poly (C6-12 olefin), hydrogenated polyisobutene, and the like.

Examples of alcohols include monovalent lower alcohols such as ethanol, propanol, isopropanol, isobutyl alcohol, and t-butyl alcohol. In addition, as a polyhydric alcohol, a divalent alcohol (for example, ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, tetramethylene glycol, 2,3-butylene glycol, penta Methylene 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); pentahydric alcohol (for example, xylitol, etc.); hexavalent alcohol (for example, sorbitol, mannitol, etc.); polyhydric alcohol polymer (for example, diethylene glycol, dipropylene glycol, triethyl) Glycol, polypropylene glycol, tetraethylene glycol, diglycerin, polyethylene glycol, triglycerin, tetraglycerin, polyglycerin, etc.); divalent alcohol alkyl ethers (for example, 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, ethylene glycol isopropyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol Dibutyl ether Dihydric alcohol alkyl ethers (for example, 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 monomethyl ether) Ethyl 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 glycol Butyl ether, etc.); dihydric alcohol ether esters (for example, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monophenyl ether acetate, ethylene glycol diazinate, 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, propylene glycol monophenyl ether acetate, etc .; glycerin monoalkyl ether (for example, Xyl alcohol, ceralkyl alcohol, batyl alcohol, etc.); sugar alcohols (eg, sorbitol, maltitol, maltotriose, mannitol, sucrose, erythritol, glucose, fructose, amylolytic sugar, maltose, xylitol, amylolytic sugar reducing alcohol) Etc.); Glysolid; Tetrahydrofurfuryl alcohol; POE-Tetrahydrofurfuryl alcohol; POP-Butyl ether; POP / POE-Butyl ether; Tripolyoxypropylene glycerin ether; POP-glycerin ether; POP-glycerin ether phosphate; POE-pentane erythritol ether, polyglycerol, etc. are mentioned.
However, in the present invention, the alcohol content is preferably 10% by mass or less based on the entire composition from the viewpoint of appropriately maintaining the viscoelasticity of the composition.

  Examples of the humectant include polyethylene glycol, propylene glycol, glycerin, 1,3-butylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate. Sodium lactate, bile salt, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO) PO adduct, Izayoi rose extract, yarrow extract, merirot extract and the like.

Examples of the surfactant include an anionic surfactant, a cationic surfactant, an amphoteric surfactant, and a nonionic surfactant.
Anionic surfactants include, for example, fatty acid soaps (eg, sodium laurate, sodium palmitate, etc.); higher alkyl sulfates (eg, sodium lauryl sulfate, potassium lauryl sulfate, etc.); alkyl ether sulfates (eg, POE lauryl sulfate triethanolamine, POE sodium lauryl sulfate, etc.); N-acyl sarcosine acid (eg, sodium lauroyl sarcosine, etc.); higher fatty acid amide sulfonates (eg, N-myristoyl-N-methyl taurine sodium, coconut oil fatty acid) Methyl tauride sodium, lauryl methyl tauride sodium, etc.); Phosphate ester salts (POE oleyl ether sodium phosphate, POE stearyl ether phosphate, etc.); Sodium 2-ethylhexyl sulfosuccinate, sodium monolauroyl monoethanolamide polyoxyethylene sodium sulfosuccinate, sodium lauryl polypropylene glycol sulfosuccinate, etc .; alkylbenzene sulfonates (for example, sodium lineardodecylbenzenesulfonate, triethanolamine lineardodecylbenzenesulfonate) Higher fatty acid ester sulfate (for example, hydrogenated coconut oil fatty acid sodium glyceryl sulfate, etc.); N-acyl glutamate (for example, monosodium N-lauroyl glutamate, disodium N-stearoyl glutamate, N-myristoyl-L-mono-sodium glutamate, etc.); sulfated oil (eg funnel oil); POE alkyl -Tercarboxylic acid; POE alkyl allyl ether carboxylate; α-olefin sulfonate; higher fatty acid ester sulfonate; secondary alcohol sulfate ester; higher fatty acid alkylolamide sulfate 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 dialkyldimethylammonium chloride; Poly (N, N'-dimethyl-3 chloride)
Alkyl quaternary ammonium salt; alkyl dimethyl benzyl ammonium salt; alkyl isoquinolinium salt; dialkyl morpholinium salt; POE alkyl amine; alkyl amine salt; polyamine fatty acid derivative; Benzalkonium chloride; benzethonium chloride and the like.

  Examples of amphoteric surfactants include imidazoline-based amphoteric surfactants (for example, 2-undecyl-N, N, N- (hydroxyethylcarboxymethyl) -2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide). Side-1-carboxyethyloxy disodium salt, etc.); betaine surfactants (for example, 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauryldimethylaminoacetic acid betaine, alkylbetaine, amide betaine) , Sulfobetaine, etc.).

Nonionic surfactants include polyether-modified silicones (eg, polyethylene glycol-10 dimethicone, polyethylene glycol-12 dimethicone, etc.); polyglycerin-modified silicones (eg, polyglyceryl-3 disiloxane dimethicone, polyglyceryl-3 poly). Dimethylsiloxyethyl dimethicone, (polyglyceryl-3 / lauryl polydimethylsiloxyethyl dimethicone) crosspolymer, etc.); sorbitan fatty acid esters (for example, sorbitan monooleate, sorbitan monostearate, sorbitan monoisostearate, sorbitan monolaurate, Sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, dipentan-2-ethylhexylate Glycerin fatty acids (for example, mono-cotton oil fatty acid glycerin, mono-erucic acid glycerin, sesquioleic acid glycerin, monostearic acid glycerin, α, α'-oleic acid pyroglutamic acid glycerin) Propylene glycol fatty acid esters (eg, propylene glycol monostearate); POE castor oil / hardened castor oil derivatives (POE castor oil, POE hardened castor oil, etc.); glycerin alkyl ether, etc. Non-hydrophilic nonionic surfactants. Also, polyglycerol fatty acid esters (for example, polyglyceryl monooleate, polyglyceryl monostearate, etc.); POE sorbitan fatty acid esters (for example, POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan tetraoleate, etc.); POE Sorbit fatty acid esters (eg, POE sorbite monolaurate, POE sorbite monooleate, POE sorbite pentaoleate, POE sorbite monostearate, etc.); POE glycerin fatty acid esters (eg, POE glycerin monostearate, POE glycerin monostearate) POE monooleate such as isostearate and POE glycerin triisostearate); POE fatty acid esters (eg POE distearate) POE monodiolates, ethylene glycol distearate, etc.); POE alkyl ethers (for example, POE lauryl ether, POE oleyl ether, POE stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE cholestanol ether, etc.); POE Alkylphenyl ethers (for example, POE nonylphenyl ether); pluronic types (for example, pluronic etc.); POE • POP alkyl ethers (for example, POE • POP cetyl ether, POE • POP-2-decyltetradecyl ether, POE / POP monobutyl ether, POE / POP hydrogenated lanolin, POE / POP glycerin ether, etc.); Tetra POE / tetra-POP ethylenediamine condensates (for example, POE castor oil hydrogenated castor oil derivatives (for example, POE castor oil, POE hydrogenated castor oil, POE hydrogenated castor oil monoisostearate, POE hydrogenated castor oil triisostearate, POE hydrogenated castor oil monopyroglutamic acid Monoisostearic acid diester, POE hydrogenated castor oil maleic acid, etc.); POE beeswax / lanolin derivatives (eg, POE sorbite beeswax etc.); alkanolamides (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; alkyl glucoside; alkyl ethoxydimethylamine oxide; trioleyl phosphate, etc. Hydrophilic nonionic surfactant may also be mentioned.

Examples of the UV protection agent include UV absorbers and UV scattering agents.
Examples of the ultraviolet absorber include 2-hydroxy-4-methoxybenzophenone, 2- (2′-hydroxy-5′-methylphenyl) benzotriazole, dimethoxybenzylidenedioxoimidazolidinepropionate 2-ethylhexyl, and bis (reslucinyl). UV-A absorbers such as triazine, methylenebisbenzotriazolyltetramethylbutylphenol, hexyl diethylaminohydroxybenzoyl benzoate, t-butylmethoxybenzoylmethane; 2-ethylhexyl paramethoxycinnamate, 2-cyano-3,3-diphenylacrylic 2-ethylhexyl acid, dimethicodiethylbenzalmalonate, 2,4,6-trianilino-p- (carbo-2'-ethylhexyl-1'-oxy) -1,3,5-triazine, 2-hydroxy-4 Methoxybenzophenone, homomenthyl include UV-B absorbers such as octyl salicylate.
Examples of the ultraviolet scattering agent include fine particle titanium oxide and fine particle zinc oxide.

  Examples of the 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 monosaccharides include tricarbon sugars (eg, D-glyceryl aldehyde, dihydroxyacetone, etc.); tetracarbon sugars (eg, D-erythrose, D-erythrulose, D-treose, erythritol, etc.); pentose sugars (eg, L-arabinose, D-xylose, L-lyxose, D-arabinose, D-ribose, D-ribulose, D-xylulose, L-xylulose, etc .; hexose (eg, D-glucose, D-talose, D) -Bucicose, D-galactose, D-fructose, L-galactose, L-mannose, D-tagatose, etc.); pentose sugar (eg, aldheptose, heproose, etc.); octose sugar (eg, octulose, etc.); For example, 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.); uronic acids (eg, D-glucuronic acid, D-mannuronic acid, L-guluronic acid, D- Galacturonic acid, L-iduronic acid, etc.).

  Examples of the oligosaccharides include sucrose, gnocyanose, umbelliferose, lactose, planteose, isoliquinoses, α, α-trehalose, raffinose, lycnose, umbilicin, stachyose verbusose and the like.

  Examples of the polysaccharide include cellulose, quince seed, chondroitin sulfate, starch, galactan, dermatan sulfate, glycogen, gum arabic, heparan sulfate, hyaluronic acid, tragacanth gum, keratan sulfate, chondroitin, xanthan gum, mucoitin sulfate, guar gum, dextran, kerato sulfate. , Locust bean gum, succinoglucan, caronic acid 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. Is mentioned.

  Examples of the polymer emulsion include an acrylic resin emulsion, a polyethyl acrylate emulsion, an acrylic resin liquid, a polyacryl alkyl ester emulsion, a polyvinyl acetate resin emulsion, and a natural rubber latex.

  Examples of the pH adjusting agent include buffers such as lactic acid-sodium lactate, citric acid-sodium citrate, and succinic acid-sodium succinate.

  Examples of vitamins include vitamins A, B1, B2, B6, C, E and derivatives thereof, pantothenic acid and derivatives thereof, biotin and the like.

Examples of the antioxidant include tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallic acid esters and the like.
Examples of the antioxidant assistant include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, kephalin, hexametaphosphate, phytic acid, and ethylenediaminetetraacetic acid.
Examples of the preservative include parabens and phenoxyethanol.

Examples of the water-soluble polymer include plant-based polymers (for example, gum arabic, tragacanth gum, galactan, guar gum, carob gum, caraya gum, carrageenan, pectin, agar, quince seed (malmello), alge colloid (guckweed extract), starch (rice , Maize, potato, wheat), glycyrrhizic acid); microbial polymers (eg, xanthan gum, dextran, succinoglucan, bullulan, etc.); natural polymers such as animal polymers (eg, collagen, casein, albumin, gelatin, etc.) Water-soluble polymers,
Starch-based polymers (for example, carboxymethyl starch, methylhydroxypropyl starch, etc.); cellulosic polymers (methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, hydroxypropylcellulose, carboxymethylcellulose, carboxymethylcellulose sodium, Semi-synthetic water-soluble polymers such as alginic acid polymers (eg, sodium alginate, propylene glycol alginate, etc.)
Vinyl polymer (eg, polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyrrolidone, carboxyvinyl polymer, etc.); Polyoxyethylene polymer (eg, polyethylene glycol 20,000, 40,000, 60,000, etc.); Acrylic polymer Polymers (for example, sodium polyacrylate, polyethyl acrylate, polyacrylamide, etc.); polyethyleneimine; synthetic water-soluble polymers such as cationic polymers.

Examples of various active ingredients include anti-inflammatory agents (for example, glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.); whitening agents (for example, placenta extract, yukinoshita extract, arbutin, etc.); Various extracts (e.g., buckwheat, auren, shikon, peonies, assembly, birch, sage, loquat, carrot, aloe, mallow, iris, grape, yokuinin, loofah, lily, saffron, senkyu, ginger, hypericum, onion, garlic , Capsicum, chimpi, toki, seaweed, etc.), activator (for example, royal jelly, photosensitizer, cholesterol derivative, etc.); blood circulation promoter (for example, nonyl acid valenyl amide, nicotinic acid benzyl ester, nicotinic acid β-butoxy ethyl ester) Capsaicin, gingeron, cantalis tincture, ictamol, tannic acid, α-borneol, tocopherol nicotinate, inositol hexanicotinate, cyclandrate, cinnarizine, trazoline, acetylcholine, verapamil, cephalanthin, γ-oryzanol, etc.); antiseborrheic agent (For example, sulfur, thianthol, etc.); anti-inflammatory agents (for example, tranexamic acid, thiotaurine, hypotaurine, etc.) and the like.

  EXAMPLES Hereinafter, although an Example demonstrates this invention still in detail, this invention is not limited to a following example, unless the summary is exceeded.

<Preparation of composition>
Based on the formulation shown in Table 1, gel-like compositions (Examples 1 to 3 and Comparative Examples 1 to 5) were prepared according to a conventional method.

<Evaluation of composition>
Six experienced evaluators picked up the gels of Examples 1 to 3 and Comparative Examples 1 to 5 in pearl size and applied to the entire face (bumpy feeling, moisturizing feeling, and good feeling of comfort. ) Based on the following evaluation criteria. The results are shown in Table 1.
◎: There is considerable ○: There is △: There is not much ×: There is not

  The storage elastic modulus of each composition was measured by a stress sweep measurement using a rheometer (AR-G2 manufactured by TA Instruments Japan Co., Ltd.). (Stage temperature: 20 ° C., geometry: 40 mm cone, vibration stress range 1 to 900 Pa) The results are shown in Table 1.

  The yield stress value of each composition was measured by a stress sweep measurement using a rheometer (AR-G2 manufactured by TA Instruments Japan Co., Ltd.). (Stage temperature: 20 ° C., geometry: 40 mm cone, vibration stress range 1 to 900 Pa) The results are shown in Table 1.

The water absorption of the water absorbent powder used was confirmed by the following method (Table 2).
0.20 g of powder was placed on a nylon mesh (mesh diameter 20 μm) placed over the opening of an inverted test tube, and the holder in which the test tube was set was placed in pure water in a 50 mL glass bottle with a depth of 0.5 mm. The wettability when immersed for 180 seconds was measured using a dynamic wettability tester (WET-6200, manufactured by Leska Co., Ltd.), and the maximum wettability with water was determined.
Moreover, the state when 1-5 mL / g of pure water was added was confirmed by operation which changed the linseed oil into the pure water in the JISK5101-13-1: 2004 pigment test method.
Moreover, the amount of water absorption (water mL / powder g) was measured by a method in which linseed oil was changed to pure water in the JIS K 5101-13-1: 2004 pigment test method.

  The present invention provides a high-viscosity composition that has an excellent richness and is excellent in the comfort during application and the moisturizing feeling of the back skin. Since such a composition gives a comfortable feeling of use, it is suitable as an external preparation for skin such as cosmetics, and is very useful industrially.

Claims (8)

A composition comprising a starch / sodium acrylate graft polymer and a water-absorbing powder satisfying the following (a) or (b):
(A) The maximum wetting force by water is 2 mN or more. (B) The state at least at one point when 1 to 5 mL / g of pure water is added is a lump.   The composition of Claim 1 whose content of the said starch sodium acrylate graft polymer and water absorbing powder is 20: 1-5: 1 by mass ratio.   The composition of Claim 1 or 2 whose sum total content of the said starch sodium acrylate graft polymer and a water absorbing powder is 0.85-4.0 mass% with respect to the whole composition.   The composition according to any one of claims 1 to 3, wherein the water-absorbing powder is one or more selected from bentonite, crystalline cellulose, and fine-particle silica.   The composition according to any one of claims 1 to 4, wherein a content of the starch / sodium acrylate graft polymer is 0.8 to 3.0 mass% with respect to the entire composition.   The composition according to any one of claims 1 to 5, wherein a storage elastic modulus in a linear region is 500 Pa or more and a yield stress value is 80 to 900 Pa.   The composition as described in any one of Claims 1-6 which is a gel form.   The composition according to any one of claims 1 to 7, which is an external preparation for skin.