JP2010047506A - Sol-gel reversible composition, thickening agent, and cosmetic material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel sol-gel reversible composition excellent in transparency, a thickening agent having a high viscosity, excellent transparency, and excellent salt resistance, and a thickening agent compounded cosmetic material excellent in a feeling of use and stability. <P>SOLUTION: The sol-gel reversible composition comprises (A) sodium polyacrylate, (B) sodium deoxycholate, and (C) water. The thickening agent comprises the sol-gel reversible composition and the cosmetic material uses this thickening agent. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a sol-gel reversible composition having excellent thixotropic performance, a thickener comprising the composition, and a cosmetic using the composition.

  Sodium polyacrylate is well known as a thickener for cosmetics (see, for example, thickener polymers in Patent Document 1 and Non-Patent Document 1). However, thickeners using sodium polyacrylate are inferior in salt resistance, and it is difficult to thicken a composition containing salt. In addition, due to its thickening effect, there is an essential technical problem that it is easy to feel stickiness during application.

  On the other hand, sodium deoxycholate is used as a solubilizer for 6-benzylaminopurine, which is a hair-growth component, in a hair-growth agent (Claim 3 of Patent Document 2).

  As for the composition having thixotropy, a composition using an organically modified clay mineral has been developed, and a cosmetic containing the composition is known to have excellent temperature stability and excellent usability. (Patent Document 3). However, this composition can be blended only in oily cosmetics or water-in-oil cosmetics, and cannot be blended in water-soluble cosmetics. In addition, since this composition has turbidity derived from clay minerals, it is difficult to obtain a transparent composition. When this composition is blended with cosmetics, the appearance as a transparent cosmetic is deteriorated. In addition, a feeling of use such as a squeak may be caused.

In general, cosmetics thickened by conventional thickeners have an inherent drawback of stickiness when applied or when dried after application.
In addition, with conventional thickeners, the target product viscosity decreases due to a high share at the time of cosmetic product manufacture (for example, at the time of mixing and stirring). In some cases, the viscosity did not return in a reduced state during production. This phenomenon has an adverse effect on the stability of the product (specifically, the mixing stability that the blended components do not separate).
Furthermore, cosmetics having a higher viscosity than conventional thickeners are difficult to collapse unless a strong share is applied at the time of application, so that the feeling of use at the time of application is adversely affected and it is difficult to apply uniformly.

JP 2001-342451 A JP-A-10-72321 JP-A-9-2816 Takeo Mitsui New Cosmetics Science Nanzan-do August 20, 1997

The present inventors have discovered that mixing deoxycholic acid with an aqueous solution of sodium polyacrylate produces a clear sol-gel reversible composition. Furthermore, it was discovered that when a sample tube containing the sol-gel reversible composition was shaken lightly, a transparent sol composition having no viscosity was instantly obtained. It was also found that if this transparent sol composition is allowed to stand, it becomes a gel composition having excellent transparency again.
And since the said sol-gel reversible composition forms a highly viscous gel composition, it discovered that it could be used as a thickener excellent in transparency and salt tolerance.
When the composition is used as a thickener in cosmetics, it has an excellent feeling of stickiness, and transparent gelled cosmetics using this composition instantly have a gel depending on the share when applied to the skin. It was made sol and it became possible to give a new skin familiarity.
In addition, when using the thickener of the present invention, the viscosity reduction due to market share in the production of cosmetics containing a thickener also contributes to the uniform mixing of the blended components, and the container is filled with reduced viscosity. Then, the cosmetic was thickened again in the container, and it was found that the mixing stability of the blended components could be improved, and the present invention was completed.

  An object of the present invention is to provide a novel transparent sol-gel reversible composition, a thickener comprising the composition, and a cosmetic using the same.

That is, this invention provides the sol-gel reversible composition containing the following component (A)-(C).
(A): Sodium polyacrylate (B): Sodium deoxycholate (C): Water

  Further, in the present invention, the content of the component (A) is 0.01 to 10% by mass and the content of the component (B) is 0.1 to 20% by mass with respect to the total amount of the sol-gel reversible composition. The sol-gel reversible composition is provided in which the content of the component (C) is 70 to 98.9% by mass.

  Furthermore, this invention provides said sol-gel reversible composition whose number average molecular weights of said component (A) are 10,000-250,000.

  Moreover, this invention provides the thickener which consists of said sol-gel reversible composition.

  Furthermore, this invention provides the cosmetics using said sol-gel reversible composition.

(1) The sol-gel reversible composition of the present invention has thixotropic properties that are extremely excellent in the reversible responsiveness of the sol-gel.
(2) The sol-gel reversible composition of the present invention has excellent transparency.
(3) The sol composition of the present invention has an excellent thickening effect and is excellent as a thickener.
(4) The thickener of the present invention has a high viscosity and is excellent in transparency and salt resistance.
(5) When the thickener of the present invention is used in cosmetics, the sticky feeling inherent to the thickener is relieved.
(6) When the thickener of the present invention is used in cosmetics, the gel instantly sols due to the share when applied to the skin, so that a new skin familiarity can be given.
(7) When the thickener of the present invention is used in cosmetics, the viscosity reduction associated with the sol composition due to the share at the time of cosmetic production contributes to uniform mixing of the ingredients. The product filled in the container with the reduced-viscosity thickener increases the viscosity and contributes to the improvement of the dispersion stability of the blended components.

  The sol-gel reversible composition of the present invention can be produced by mixing the following components (A) to (C). Mixing conditions are not ask | required. Other components may be contained as long as they have sol-gel reversibility.

(A): Sodium polyacrylate It is a well-known thickener and a commercial item can be used for this invention. The number average molecular weight is 10,000 to 250,000, preferably 10,000 to 100,000, more preferably 10,000 to 500000, and most preferably 10,000 to 30,000.
In addition, the one where a number average molecular weight is higher can provide the composition with which the said composition is easy to gelatinize and a viscosity is high. The narrower the molecular weight distribution, the better the transparency of the composition.
The content of the component (A) in the sol-gel reversible composition is 0.01 to 10% by mass, preferably 0.05 to 1.0% as a blendable level with respect to the total amount of the sol-gel reversible composition. More preferably, it is 0.1-0.4, Most preferably, it is 0.1-0.2.

ゾル−ゲル可逆性組成物中の成分（Ｂ）の含有量は、ゾル−ゲル可逆性組成物全量に対して、0.1〜20質量％であり、好ましくは１〜10質量％であり、さらに好ましくは2〜6質量％であり、最も好ましくは3〜4質量％である。 (B): Sodium deoxycholate A known compound having the following structure. A commercial item can be used for this invention.

The content of the component (B) in the sol-gel reversible composition is 0.1 to 20% by mass, preferably 1 to 10% by mass, and more preferably based on the total amount of the sol-gel reversible composition. Is 2-6% by mass, most preferably 3-4% by mass.

(C): Water The content of the component (C) in the sol-gel reversible composition is preferably 70 to 98.9 mass% with respect to the total amount of the sol-gel reversible composition.

The mass ratio of sodium polyacrylate and sodium deoxycholate is preferably in the following range.
Sodium polyacrylate: sodium deoxycholate = 1: 15-20

The sol-gel reversible composition of the present invention can be produced by simply mixing the above components. You may heat as needed.
In the present invention, there is a great advantage in that a composition having high thixotropy, which is excellent in transparency and reversible sol-gel reversibility, can be easily produced.
When the container containing the transparent sol-gel reversible composition is shaken lightly, a transparent sol composition having no viscosity is instantaneously obtained. If this transparent sol composition is allowed to stand, it becomes a gel composition having excellent transparency again.

  The sol-gel reversible composition of the present invention has a high viscosity and is a thickener excellent in transparency and salt resistance. Therefore, it is preferably used as a thickener for various applications in the technical field where the thickener is used. Particularly preferred are cosmetic thickeners.

In a cosmetic that simply uses a thickener comprising a sol-gel reversible composition as the thickener, the cosmetic may or may not be a composition having sol-gel reversibility. That is, the cosmetic itself may not have gel-sol reversibility.
However, cosmetics having sol-gel reversibility are most preferred for the following reasons.
1) By applying in the gel state, the gel becomes sol due to the share at the time of application on the skin, so that a new feeling of use on the skin at the time of application is exhibited.
2) If a container is shaken at the time of use, it can enjoy the change that the form of cosmetics responds immediately to the simple act. That is, the makeup act is visually enjoyable.
Then, in order to greatly appeal the product having this reversible response phenomenon, for example, it is possible to give a name such as “shaking cosmetics”.
3) Multilayer cosmetics and the like are premised on shaking the container in order to completely mix the separated components. Therefore, the response phenomenon of 2) can be positively applied to multilayer cosmetics etc. on the premise that the container is shaken.

  Thus, when cosmetics have sol-gel reversibility, the utility value of the sol-gel reversible composition of this invention becomes the largest. A cosmetic material having a high thixotropy that is extremely excellent in the reversible responsiveness of the sol-gel can be obtained. For example, by shaking a transparent container, a change in form from gel to sol can be visually appreciated. In addition to the effects described above, it is possible to provide a cosmetic that can be interesting in changing the form of the cosmetic.

The cosmetic of the present invention can be produced by a conventional method by adding any cosmetic ingredients to the sol-gel reversible composition and stirring.
The components (A) to (C) constituting the sol-gel reversible composition and the cosmetic blending components may be blended and mixed at the same time.

The dosage form of the cosmetic is not limited. Any dosage form such as a solution system, a solubilization system, an emulsification system, a powder dispersion system, a water-oil two-layer system, and a water-oil-powder three-layer system may be used.
Moreover, the product form is also arbitrary. Products such as lotions, emulsions and gels are preferred. A gel-like or gel-like product having sol-gel reversibility is more preferred.

The components that can be blended in the cosmetic of the present invention are listed below. It can mix | blend in the limit which does not impair the thickening effect or the sol-gel reversible effect.
Examples of the powder component include inorganic powders (for example, talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, saucite, biotite, permiculite, magnesium carbonate, calcium carbonate, silicic acid. Aluminum, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate (baked gypsum), calcium phosphate, fluorine apatite, 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, polymethyl methacrylate powder, polystyrene Powder, copolymer resin powder of styrene and acrylic acid, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, etc.); inorganic white pigment (eg, titanium dioxide, zinc oxide, etc.); inorganic red pigment (eg, Iron oxide (Bengara), iron titanate, etc .; Inorganic brown pigments (eg, γ-iron oxide, etc.); Inorganic yellow pigments (eg, yellow iron oxide, loess, etc.); Inorganic black pigments (eg, black oxide) Iron, low-order titanium oxide, etc.); inorganic purple pigments (eg, manganese violet, cobalt violet, etc.); inorganic green pigments (eg, chromium oxide, chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments (eg, Pearl pigments (eg, titanium oxide coated mica, titanium oxide coated bismuth oxychloride, titanium oxide coated talc, colored acid) Titanium 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 (eg, red 201, red 202, red 204) No., red 205, red 220, red 226, red 228, red 405, orange 203, orange 204, yellow 205, yellow 401, and blue 404, organic pigments such as 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 No. 1 etc.); natural pigments (for example, chlorophyll, β-carotene, etc.) and the like.

  Examples of liquid oils and fats include 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, linseed oil , Safflower oil, cottonseed oil, eno oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, cinnagiri oil, Japanese kiri oil, jojoba oil, germ oil, triglycerin and the like.

  Examples of the solid fat include cacao butter, coconut oil, hardened coconut oil, palm oil, palm kernel oil, owl kernel oil, hardened oil, owl, and hardened castor oil.

  Examples of the wax include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, ibota wax, whale wax, montan wax, nuka wax, lanolin, kapok wax, lanolin acetate, liquid lanolin, sugar cane wax, lanolin fatty acid isopropyl, hexyl laurate, reduced lanolin, Examples include jojoba wax, hard lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, POE hydrogenated lanolin alcohol ether, ceresin, and microcrystalline wax.

  Examples of the hydrocarbon oil include liquid paraffin, ozokerite, squalane, pristane, paraffin, squalene, petrolatum and the like.

  Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecylenic acid, isostearic acid, linoleic acid, linolenic acid, eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and the like. Is mentioned.

  Examples of higher alcohols include linear alcohols (eg, lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol); branched chain alcohols (eg, monostearyl glycerin ether (batyl alcohol) ), 2-decyltetradecinol, lanolin alcohol, cholesterol, phytosterol, hexyl decanol, isostearyl alcohol, octyldodecanol and the like.

  Examples of ester oils include isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyl decyl dimethyloctanoate, cetyl lactate, lactic acid Myristyl, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, monoisostearate N-alkyl glycol, neopentyl glycol dicaprate, Diisostearyl malate, glycerin di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexanoate, trime triisostearate Roll propane, tetra-2-ethylhexanoic acid pentaerythritol, tri-2-ethylhexanoic acid glycerin, trioctanoic acid glycerin, triisopalmitic acid glycerin, triisostearic acid trimethylolpropane, cetyl 2-ethylhexanoate, 2-ethylhexyl Palmitate, glyceryl trimyristate, glyceride tri-2-heptylundecanoate, castor oil fatty acid methyl ester, oleyl oleate, acetoglyceride, 2-heptylundecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid 2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyl adipate Decyl, diisopropyl sebacate, 2-ethylhexyl succinate, and triethyl citrate.

  Examples of the silicone oil include linear polysiloxanes (for example, dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane, etc.); cyclic polysiloxanes (for example, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexyl). And silicone resins that form a three-dimensional network structure, various modified polysiloxanes (amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, fluorine-modified polysiloxane, etc.) It is done.

  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 acids (eg, sodium lauroyl sarcosine, etc.); higher fatty acid amide sulfonates (eg, sodium N-myristoyl-N-methyl taurate, palm Oil fatty acid methyl taurine sodium, lauryl methyl taurine sodium, etc .; phosphate ester salts (POE-oleyl ether sodium phosphate, POE-stearyl ether phosphate, etc.); sulfosuccinates (eg, di-2-ethylhexyl sulfosuccinate) Sodium salt, monolauroyl monoethanolamide polyoxyethylene sodium sulfosuccinate, sodium lauryl polypropylene glycol sulfosuccinate, etc.); alkylbenzene sulfonate (eg, sodium lineardodecylbenzenesulfonate, triethanolamine lineardodecylbenzenesulfonate, lineardodecylbenzene) Sulfonic acid, etc.); higher fatty acid ester sulfate (eg, hydrogenated coconut oil fatty acid sodium glycerol sulfate, etc.); N-acyl glutamate (eg, monosodium N-lauroyl glutamate, disodium N-stearoyl glutamate, N-myristoyl- L-glutamic acid monosodium etc.); POE-alkyl ether carboxylic acid; POE-alkyl allyl ether carboxylate; α-olefin sulfonic acid ; Higher fatty acid ester sulfonates; secondary alcohol sulfates; higher fatty acid alkylol amide sulfate; 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-3,5-methylenepiperidinium chloride); alkyl quaternary ammonium salt; alkyldimethylbenzylammonium salt; alkylisoquinolinium salt; dialkyl morpholinium salt; POE-alkylamine; Examples include alkylamine salts; polyamine fatty acid derivatives; amyl alcohol fatty acid derivatives; benzalkonium chloride; benzethonium chloride and the like.

  Examples of amphoteric surfactants include imidazoline-based amphoteric surfactants (eg, 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.).

  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, Sorbitan trioleate, diglycerol sorbitan penta-2-ethylhexylate, diglycerol sorbitan tetra-2-ethylhexylate); glycerin polyglycerin fatty acids (eg mono cottonseed oil fatty acid glycerin, monoerucic acid glycerin, sesquioleate glycerin, monostearin) Glycerin acid, α, α'-oleic acid pyroglutamate glycerin, monostearic acid glycerin malic acid, etc.); propylene glycol fatty acid esters (eg monostearies) Propylene glycolate, etc.); hardened castor oil derivative; glycerin alkyl ether, etc.

  Examples of hydrophilic nonionic surfactants include POE-sorbitan fatty acid esters (for example, POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraoleate, etc.); POE sorbite 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-glycerol monoisostearate, POE-monooleate such as POE-glycerol triisostearate, etc.); POE-fatty acid esters (for example, POE-distearate, POE-monodiolate, ethylene glycol distearate, etc.); POE-alkyl ethers (eg POE- Uril ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE-cholestanol ether, etc.); Pluronic type (for example, Pluronic, etc.); POE / POP-alkyl ether (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 (eg Tetronic, etc.); POE-castor oil hardened castor oil derivatives (eg POE-castor oil, POE-hardened castor oil, POE-hardened castor oil monoisostearate, POE-hardened castor Oil triisostearate, POE-hardened castor oil monopyroglutamic acid monoisostearic acid diester, POE-hardened castor oil maleic acid, etc.); PO E-beeswax lanolin derivatives (eg POE-sorbite beeswax); 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 ethoxydimethylamine oxide; trioleyl phosphate and the like.

  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 natural water-soluble polymers include plant-based polymers (for example, gum arabic, gum tragacanth, galactan, guar gum, carob gum, caraya gum, carrageenan, pectin, agar, quince seed (malmello), alge colloid (guckweed extract), starch (Rice, corn, potato, wheat), glycyrrhizic acid}; microbial polymers (eg, xanthan gum, dextran, succinoglucan, bull run); others (eg, fish-derived collagen, fish-derived gelatin, wheat protein, silk protein) Etc.).

  Semi-synthetic water-soluble polymers include, for example, starch polymers (eg, carboxymethyl starch, methylhydroxypropyl starch, etc.); cellulose polymers (methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate) Hydroxypropylcellulose, carboxymethylcellulose, sodium carboxymethylcellulose, crystalline cellulose, cellulose powder and the like); alginic acid polymers (for example, sodium alginate, propylene glycol alginate, etc.) and the like.

  Synthetic water-soluble polymers include, for example, vinyl polymers (eg, polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyrrolidone, carboxyvinyl polymer); polyoxyethylene polymers (eg, polyethylene glycol 20,000, 40,000, 60,000). Polyoxyethylene polyoxypropylene copolymer, etc.); acrylic polymers (for example, polyethyl acrylate, polyacrylamide, etc.); polyethyleneimine; cationic polymers, and the like.

  Examples of the thickener include gum arabic, carrageenan, caraya gum, gum tragacanth, carob gum, quince seed (malmello), casein, dextrin, gelatin, sodium pectate, sodium alginate, methylcellulose, ethylcellulose, CMC, hydroxyethylcellulose, hydroxypropyl Cellulose, PVA, PVM, PVP, Carboxyvinyl polymer, Locust bean gum, Guar gum, Tamarind gum, Dialkyldimethylammonium sulfate cellulose, Xanthan gum, Magnesium aluminum silicate, Bentonite, Hectorite, AlMg silicate (Begum), Laponite, anhydrous silica An acid etc. are mentioned.

Examples of the ultraviolet absorber include the following compounds.
(1) Benzoic acid ultraviolet absorbers For example, paraaminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N, N-dipropoxy PABA ethyl ester, N, N-diethoxy PABA ethyl ester, N, N-dimethyl PABA ethyl ester, N, N-dimethyl PABA butyl ester, N, N-dimethyl PABA ethyl ester and the like.
(2) Anthranilic acid-based UV absorbers such as homomenthyl-N-acetylanthranilate.
(3) Salicylic acid ultraviolet absorbers such as amyl salicylate, menthyl salicylate, homomenthyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropanol phenyl salicylate, and the like.
(4) Cinnamic acid UV absorbers For example, octyl cinnamate, ethyl-4-isopropyl cinnamate, methyl-2,5-diisopropyl cinnamate, ethyl-2,4-diisopropyl cinnamate, methyl-2,4- Diisopropyl cinnamate, propyl-p-methoxycinnamate, isopropyl-p-methoxycinnamate, isoamyl-p-methoxycinnamate, octyl-p-methoxycinnamate (2-ethylhexyl-p-methoxycinnamate), 2-ethoxy Ethyl-p-methoxycinnamate, cyclohexyl-p-methoxycinnamate, ethyl-α-cyano-β-phenylcinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glyceryl mono-2-ethylhexanoyl -Diparamethoxycinnamate.
(5) Triazine-based ultraviolet absorber, for example, bisresorcinyl triazine.
More specifically, bis {[4- (2-ethylhexyloxy) -2-hydroxy] phenyl} -6- (4-methoxyphenyl) 1,3,5-triazine, 2,4,6-tris { 4- (2-ethylhexyloxycarbonyl) anilino} 1,3,5-triazine and the like.
(6) Other UV absorbers For example, 3- (4'-methylbenzylidene) -d, l-camphor, 3-benzylidene-d, l-camphor, 2-phenyl-5-methylbenzoxazole, 2,2 '-Hydroxy-5-methylphenylbenzotriazole, 2- (2'-hydroxy-5'-t-octylphenyl) benzotriazole, 2- (2'-hydroxy-5'-methylphenylbenzotriazole, dianisoylmethane, 4-methoxy-4'-t-butyldibenzoylmethane, 5- (3,3-dimethyl-2-norbornylidene) -3-pentan-2-one, pyridazine derivatives such as dimorpholinopyridazinone.

  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 the lower alcohol include ethanol, propanol, isopropanol, isobutyl alcohol, t-butyl alcohol and the like.

  Examples of the polyhydric alcohol include divalent alcohols (for example, ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, tetramethylene glycol, 2,3-butylene glycol, Pentamethylene glycol, 2-butene-1,4-diol, hexylene glycol, octylene glycol, etc.); trivalent alcohol (eg, glycerin, trimethylolpropane, etc.); tetravalent alcohol (eg, 1,2,6) Pentaerythritol such as hexanetriol); pentahydric alcohol (eg, xylitol, etc.); hexavalent alcohol (eg, sorbitol, mannitol, etc.); polyhydric alcohol polymer (eg, diethylene glycol, dipropylene glycol, triethylene 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, etc.) ; Dihydric alcohol alkyl ester Tellurium (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 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 glycol butyl ether, etc.); divalent 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 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 ethers (for example, Kimyl alcohol, Serakir al Sugar alcohol (for example, sorbitol, maltitol, maltotriose, mannitol, sucrose, erythritol, glucose, fructose, amylolytic sugar, maltose, xylitolose, amylolytic sugar reducing alcohol, etc.); Solid; Tetrahydrofurfuryl alcohol; POE-Tetrahydrofurfuryl alcohol; POP-Butyl ether; POP / POE-Butyl ether; Tripolyoxypropylene glycerin ether; POP-glycerin ether; POP-glycerin ether phosphate; POP / POE-pentane erythritol Examples include ether and polyglycerin.

  Monosaccharides include, for example, 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 sugar (eg, D-glucosamine, D-galactosamine, shea Acid, Aminouron acid, muramic acid); uronic acid (e.g., D- glucuronic acid, D- mannuronic acid, L- guluronic acid, D- galacturonic acid, L- iduronic acid) and the like.

  Examples of the oligosaccharide include sucrose, umbelliferose, lactose, planteose, isolicnose, α, α-trehalose, raffinose, lycnose, stachyose verbus course 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 bingham, 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 amino acid derivatives include acyl sarcosine sodium (lauroyl sarcosine sodium), acyl glutamate, acyl β-alanine sodium, glutathione, and pyrrolidone carboxylic acid.

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

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

  Examples of the pH adjuster 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 other components that can be blended include preservatives (methyl paraben, ethyl paraben, butyl paraben, phenoxyethanol, etc.); anti-inflammatory agents (eg, glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.); Whitening agents (for example, Yukinosita extract, arbutin, tranexamic acid, L-ascorbic acid, L-ascorbic acid phosphate magnesium salt, L-ascorbic acid glucoside, potassium 4-methoxysalicylate, etc.); various extracts (for example, buckwheat , Oren, shikon, peony, assembly, birch, sage, loquat, carrot, aloe, mallow, iris, grape, yokuinin, loofah, lily, saffron, senkyu, ginger, hypericum, onionis Garlic, capsicum, chimpi, toki, seaweed, etc.), activator (eg, royal jelly, photosensitizer, cholesterol derivative, etc.); blood circulation promoter (eg, nicotinic acid benzyl ester, nicotinic acid β-butoxyethyl ester, capsaicin, gingerone, Cantharis tincture, icutamol, tannic acid, α-borneol, tocopherol nicotinate, inositol hexanicotinate, cyclandrate, cinnarizine, tolazoline, acetylcholine, verapamil, cephalanthin, γ-oryzanol, etc .; antiseborrheic agents (eg, sulfur Anti-inflammatory agents (eg, thiotaurine, hypotaurine, etc.); bactericides (eg, benzoic acid and its salts, isopropylmethylphenol, undecylenic acid and its salts, undecylenic acid monoeta Uramide, cetyltrimethylammonium chloride, cetylpyridinium chloride, benzalkonium chloride, benzathonium chloride, alkyldiaminoethylglycine chloride, chlorhexidine chloride, orthophenylphenol, chlorhexidine gluconate, cresol, chloramine T, chlorxylenol, chlorcresol, chlorphenesin Chlorobutanol, 5-chloro-2-methyl-4-isothiazolin-3-one, salicylic acid and its salts, 1,3-dimethylol-5,5-dimethylhydantoin, alkylisoquinolinium bromide, domifene bromide, Sorbic acid and its salts, thymol, thiram, dehydroacetic acid and its salts, triclosan, trichlorocarbanilide, p-hydroxybenzoic acid ester, parachlorophenol, halocarba , Pyrogallol, phenol, hexachlorophene, 2-methyl-4-isothiazolin-3-one, NN "-methylenebis (N '-(3-hydroxymethyl-2.5-dioxo-4-imida, lauroyl sarcosine sodium, resorcin, etc. ) And the like.

1. Effect as a thickener of the sol-gel reversible composition As an index showing the effect as a thickener of the sol-gel reversible composition of the present invention, the gelation ability, transparency and stability of the aqueous dispersion are determined. Examined. For both sodium polyacrylate and sodium deoxycholate, Wako Pure Chemical Co., Ltd. reagent grades were used.
First, each component was mixed to prepare a sol-gel reversible composition and filled in a glass bottle (200 cc).
The gelation ability and transparency were evaluated by visually observing the state immediately after filling.
The stability test was evaluated by observing the storage state after one month at 50 ° C.
Any sol-gel reversible composition becomes a sol composition when shaken in a glass bottle, and becomes a gel composition again when left standing.

<Gelability>
A: A gel is formed and does not flow even when tilted.
○: Gel is formed, but slowly flows when tilted.
X: No gel formation.

<Transparency>
A: Colorless and transparent with no turbidity.
○: Colorless and transparent, but partially turbid.
(Triangle | delta): Although it is transparent, the whole is cloudy white.
X: It is cloudy.

<Stability>
○: No change in appearance.
Δ: Some change in appearance is observed.
X: Appearance is changed, and the viscosity is clearly reduced.

<Relationship between molecular weight (number average molecular weight) of sodium polyacrylate and gelling ability>

<Blend amount of sodium polyacrylate>

<Amount of sodium deoxycholate>

<Comparison of salt tolerance>

<Comparison of transparency>

2. Usability and appearance in cosmetics <Whitening emulsion>
The whitening milk liquid which mix | blended the sol-gel reversible composition of this invention as a thickener was manufactured by the conventional method, and the feeling of use of the stickiness at the time of application | coating and the stickiness at the time of thirst were evaluated by the following evaluation criteria.
As an evaluation method, evaluation was performed by a sensory test by a specialized panel (10 persons).
The whitening emulsion is a gel, but becomes a sol when the container is shaken.

<Usage feeling during application>
A: All 10 people answered that there was no stickiness and an excellent feeling of use.
○: 7 to 9 people answered that there was no stickiness and excellent usability.
(Triangle | delta): Four to six persons answered that there was no sticky feeling and it was the outstanding usability.
×: Three or less people answered that there was no stickiness and excellent usability.

<Dry stickiness>
A: All 10 people answered that there was no stickiness and an excellent feeling of use.
○: 7 to 9 people answered that there was no stickiness and excellent usability.
(Triangle | delta): Four to six persons answered that there was no sticky feeling and it was the outstanding usability.
×: Three or less people answered that there was no stickiness and excellent usability.

<Whitening gel>
A whitening gel containing the sol-gel reversible composition of the present invention as a thickener was produced by a conventional method, and the feeling of use at the time of application and stickiness at the time of thirst were evaluated according to the above evaluation criteria. Further, transparency was evaluated by observing the state after preparation.
The whitening gel of the present invention is a gel, but becomes a sol when the container is shaken.

<Appearance (transparency)>
A: Colorless and transparent with no turbidity.
○: Colorless and transparent, but partially turbid.
(Triangle | delta): Although it is transparent, the whole is cloudy white.
X: It is cloudy.

<Hair gel>
A hair gel containing the sol-gel reversible composition of the present invention as a thickener was produced by a conventional method, and the feeling of use at the time of application and the stickiness at the time of thirst were evaluated according to the above evaluation criteria. Further, transparency was evaluated by observing the state after preparation.
The hair gel of the present invention is a gel, but becomes a sol when the container is shaken.

From the above results, it can be seen that the cosmetic using the sol-gel reversible composition of the present invention is excellent in stability, feeling of use, and transparency of appearance.
In addition, a new skin familiarity can be imparted by changing the gel into a sol depending on the share when applied to the skin.

  The phenomenon of gelation occurs by mixing sodium polyacrylate and sodium deoxycholate in an aqueous solution. Furthermore, when the mixture is stirred, the viscosity is drastically reduced to a sol state. By leaving the mixture in a sol state to stand overnight, it returns to the gel again. Such a gel-sol reversible phenomenon in this mixture is a phenomenon newly found by the present inventors. Since the gel-sol reversible composition comprising the mixture has a high thickening effect and high transparency, it is preferably used as a thickening agent and has a wide range of technologies including cosmetics, foods, paints, inks and toners. Application to the field becomes possible. Furthermore, the responsiveness of the reversible form change between the gel and the sol can be positively utilized in technical fields such as cosmetics and foods.

Claims (5)

A sol-gel reversible composition containing the following components (A) to (C).
(A): Sodium polyacrylate (B): Sodium deoxycholate (C): Water   The content of the component (A) is 0.01 to 10% by mass with respect to the total amount of the sol-gel reversible composition, the content of the component (B) is 0.1 to 20% by mass, The sol-gel reversible composition according to claim 1, wherein the content of C) is 70 to 98.9% by mass.   The sol-gel reversible composition according to claim 1 or 2, wherein the component (A) has a number average molecular weight of 10,000 to 250,000.   A thickener comprising the sol-gel reversible composition according to any one of claims 1 to 3.   Cosmetics using the sol-gel reversible composition of any one of Claims 1 thru | or 3.