WO2016052571A1 - Composition for external use - Google Patents

Abstract

[Problem] To provide a composition for external use which, when applied, gives no sticky feeling and satisfactorily conforms to the skin and which, after the application, gives a satisfactory dry feeling and moist feeling while suppressing a powdery feeling. [Solution] A composition for external use, to which (A) a water-soluble thickener and (B) a mixture of a silicone oil, a porous powder, and a (dimeticone/vinyldimeticone) crosspolymer have been added.

Description

Composition for external use

The present invention relates to a composition for external use. More specifically, although the present invention contains a water-soluble thickener such as carboxyvinyl polymer, the stickiness at the time of application is suppressed, and skin familiarity is good. The present invention relates to a composition for external use which is excellent in a smooth use feeling and a moisturizing feeling while suppressing powderiness.

Conventionally, for the purpose of improving the moisturizing feeling of external compositions such as skin cosmetics, it is known to contain a water-soluble thickener such as carboxyvinyl polymer. However, the water-soluble thickener tends to cause stickiness at the time of application, and the skin becomes unfit.

In order to reduce the sticky feeling at the time of application, a method of blending powder is known. However, if a large amount is blended, the powder is distorted or stability is lost in emulsified cosmetics. There was a problem. Therefore, a skin external preparation containing an alkyl-modified carboxyvinyl polymer, a cyclic silicone, and a powder is known as one that suppresses stickiness and exhibits a smooth feeling (Patent Document 1).

However, this topical skin preparation has a problem that it suppresses the stickiness and gives a smooth feeling, but also leaves a powdery feeling, makes it difficult to remember the moisturizing feeling, and is unsatisfactory in terms of skin familiarity from a light application feeling. It was.

Moreover, an external preparation for skin containing an alkyl-modified carboxyvinyl polymer, a crosslinked methylpolysiloxane, silicone oil, and powder is known (Patent Document 2). Thereby, although it became possible to improve the powderiness, there was a problem that a moist moisturizing feeling could not be obtained. Also, the stickiness at the time of application and the familiarity with the skin were not satisfactory.

In recent years, there has been an increasing demand for improvements in the feel and functionality of external compositions, and skin cosmetics containing water-soluble thickeners such as carboxyvinyl polymers have reduced stickiness during application and are familiar to the skin. There is a demand for a composition for external use that has both a smooth use feeling and a moisturizing feeling while suppressing powderiness after application.

Japanese Patent Laid-Open No. 11-92329 JP 2004-182626 A

An object of the present invention is to provide a composition for external use that does not feel sticky at the time of application, is well-familiar to the skin, and has a smooth and moisturized feeling while suppressing powderiness after application.

The present inventor conducted extensive studies to solve the above problems, and applied an external composition to which a mixture of silicone oil, porous powder and cross-linked methylpolysiloxane was added together with a water-soluble thickener. At the time, it was found that stickiness was suppressed and skin familiarity was improved, and after application, it was possible to achieve both a smooth feeling of use and a moisturizing feeling while suppressing powderiness.

Further, the present inventor has found that the above-described effects can be further improved by further satisfying at least one of the following constitutions (1) to (4) in the external composition.



(1) A carboxyvinyl polymer and / or an alkyl-modified carboxyvinyl polymer is used as the water-soluble thickener.



(2) As the silicone oil, dimethylpolysiloxane, cyclopentasiloxane, methyltrimethicone, and / or diphenylsiloxyphenyltrimethicone is used.



(3) (Dimethicone / vinyl dimethicone) crosspolymer is used as the cross-linked methylpolysiloxane.



(4) Silica, mica, talc, and / or nylon is used as the porous powder.



(5) The mixture contains 0.1 to 5 parts by weight of silicone oil, 0.1 to 5 parts by weight of porous powder, and 0.05 to 5 parts by weight of cross-linked methylpolysiloxane. It has been found that the above-described effect is further improved by providing one or more of the configurations.

The present invention has been completed by further studies based on these findings.



That is, this invention provides the composition for external use hung up below.



Item 1. A composition for external use to which (A) a water-soluble thickener and (B) a mixture of silicone oil, porous powder and cross-linked methylpolysiloxane are added.



Item 2. Item 2. The composition for external use according to Item 1, wherein the water-soluble thickener is a carboxyvinyl polymer and / or an alkyl-modified carboxyvinyl polymer.



Item 3. Item 3. The external composition according to Item 1 or 2, wherein the silicone oil is at least one selected from the group consisting of dimethylpolysiloxane, cyclopentasiloxane, methyltrimethicone, and diphenylsiloxyphenyltrimethicone.



Item 4. Item 4. The composition for external use according to any one of Items 1 to 3, wherein the porous powder is at least one selected from the group consisting of silica, mica, talc, and nylon.



Item 5. Item 5. The composition for external use according to any one of Items 1 to 4, wherein the crosslinked methylpolysiloxane is a (dimethicone / vinyl dimethicone) crosspolymer.



Item 6. The mixture contains 0.1 to 5 parts by weight of silicone oil, 0.1 to 5 parts by weight of porous powder, and 0.05 to 5 parts by weight of cross-linked methylpolysiloxane. The composition for external use according to any one of 1 to 5.



Item 7. Item 7. The composition for external use according to any one of Items 1 to 6, which is a cosmetic.

The composition for external use of the present invention is a skin cosmetic containing a water-soluble thickener such as a carboxyvinyl polymer, is less sticky during application, and has good skin familiarity. It is possible to achieve both a smooth feeling of use and a moisturizing feeling while suppressing the above.

In the composition for external use of the present invention, (A) a water-soluble thickener and (B) a mixture of silicone oil, porous powder and cross-linked methylpolysiloxane (hereinafter sometimes simply referred to as “mixture”) are added. It is characterized by being. Hereinafter, the external composition of the present invention will be described in detail.

(A) Water-soluble thickener



The external composition of the present invention contains a water-soluble thickener. The water-soluble thickener used in the present invention is not particularly limited. For example, carboxyvinyl polymer, alkyl-modified carboxyvinyl polymer, cellulose gum, xanthan gum, hydroxypropylmethylcellulose, hydroxyethylcellulose, carboxymethylcellulose, (acryloyldimethyltaurate ammonium) / VP) copolymer, sodium polyacrylate, carrageenan, xanthan gum, sclerotium gum, polystyrene sulfonate, karaya gum, pectin and the like. These water-soluble thickeners may be used individually by 1 type, and may be used in combination of 2 or more type. Among these water-soluble thickeners, a carboxyvinyl polymer and an alkyl-modified carboxyvinyl polymer are preferable in order to improve skin familiarity and moisturizing feeling and from the viewpoint of effects when used in combination with a mixture described later.

The carboxyvinyl polymer is a water-soluble vinyl polymer having a carboxyl group, and specifically, a polymer having a cross-linked structure with allyl sucrose or allyl ether of pentaerythritol with acrylic acid and / or methacrylic acid as the main chain. is there.

The alkyl-modified carboxyvinyl polymer is a polymer in which at least a part of the carboxyl group of the carboxyvinyl polymer is esterified with an alkyl group. In the alkyl-modified carboxyvinyl polymer, the alkyl group bonded by an ester bond may be linear or branched. Further, the carbon number of the alkyl group is not particularly limited, and examples thereof include 8 to 35, preferably 8 to 30.

The carboxyvinyl polymer and / or the alkyl-modified carboxyvinyl polymer has a viscosity of 5000 mPa · s or more, preferably 5000 to 100,000 mPa · s in a 0.5 wt% aqueous solution (20 ° C.) adjusted to pH = 6.5. used. Here, for the viscosity, in a B-type viscometer “TOKI SANGYO VISCOMETER TVB-10” (manufactured by Toki Sangyo Co., Ltd.), rotor: M3 (rotation speed: 20 rpm, time: 1 min, unit: mPa · s) is used. This is the value measured.

Commercial products can be used for the carboxyvinyl polymer and the alkyl-modified carboxyvinyl polymer. Specific examples of commercially available carboxyvinyl polymers include “AQPEC HV-501E” and “AQUPEC HV-505E” manufactured by Sumitomo Seika Co., Ltd .; “Carbopol 940” and “Carbopol” manufactured by Lubrizol Advanced Materials. 941 "," Carbopol 980 ";" Hibiswaco 103 "," Hibiswaco 104 "," Hibiswaco 105 "manufactured by Wako Pure Chemical Industries, Ltd.," Sintalen K "," Sintalen L "manufactured by 3V Sigma, etc. It is done. Further, commercially available products of alkyl-modified carboxyvinyl polymer include, specifically, “AQUPEC HV-501ER” manufactured by Sumitomo Seika Co., Ltd .; “Carbopol ultraz20”, “Carbopol ultraz21”, “Carbopol” manufactured by Lubrizol Advanced Materials, Inc. Paul 1342 ”,“ Carbopol ETD2020 ”,“ Pemlen TR-1 ”,“ Pemlen TR-2 ”and the like.

In the composition for external use of the present invention, the blending amount of the water-soluble thickener is not particularly limited. For example, the total amount of the water-soluble thickener is preferably in the range of 0.01 to 3% by weight, The amount is preferably 0.05 to 2% by weight, more preferably 0.1 to 1.5% by weight. By satisfying such a range, it becomes possible to improve the familiarity of the skin during application and the moisturizing feeling after application. Moreover, content of such a water-soluble thickener is preferable also from the point of the effect at the time of using together with the mixture mentioned later.

(B) Mixture of silicone oil, porous powder and cross-linked methylpolysiloxane



The composition for external use of the present invention contains a mixture of silicone oil, porous powder and crosslinked methylpolysiloxane. In this way, by adding these three components in a premixed state together with the water-soluble thickener, the stickiness at the time of application and the skin familiarity are improved, and after application, while suppressing the powderiness However, it is possible to achieve both a smooth feeling of use and a moisturizing feeling.

The mixture is prepared by mixing, stirring and uniformly dispersing silicone oil, porous powder and cross-linked methylpolysiloxane. By making such a mixture, silicone oil is immersed in the porous powder, and the crosslinked methylpolysiloxane is swollen by the silicone oil.

The type of silicone oil used in the present invention is not particularly limited, and examples thereof include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, methylhydrogenpolysiloxane, and dimethylsiloxane / methylphenylsiloxane copolymer. Organopolysiloxane; Cyclic siloxane such as cyclopentasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, tetramethyltetraphenyltetracyclosiloxane, etc .; Gum-like dimethylpolysiloxane with high polymerization degree, trimethylsiloxysilicic acid, trimethylsiloxysilicate A cyclic siloxane solution of an acid; methyl trimethicone; diphenylsiloxyphenyl trimethicone; a diorganopolysiloxane having an alkyl group having 6 to 50 carbon atoms; Mino-modified silicones include modified silicone oils such as alkyl-modified silicone. These silicone oils may be used alone or in combination of two or more.

Among these silicone oils, dimethylpolysiloxane, cyclopentasiloxane, methyltrimethicone, and diphenylsiloxyphenyltrimethicone are preferable from the viewpoint of further effectively improving skin familiarity and moisturizing feeling.

When dimethylpolysiloxane is used as the silicone oil, it is particularly preferable to use one having a kinematic viscosity at 25 ° C. of 5 to 500 cs, preferably 50 to 400 cs, more preferably 100 to 350 cs, particularly preferably 150 to 350 cs. Soaking into a fine powder and swelling of cross-linked methylpolysiloxane can be carried out successfully, which is preferable in terms of skin familiarity, smooth feeling and moisturizing feeling. The kinematic viscosity is a value measured using an Ostwald viscometer. Examples of dimethylpolysiloxane satisfying the kinematic viscosity include “SH200 C Fluid 100cs”, “SH200 C Fluid 200cs”, “SH200 C Fluid 350cs” manufactured by Toray Dow Corning Co., Ltd .; “SH200 C Fluid 350cs”; “KF-96A-100cs”, “KF-96A-200cs”, “KF-96A-300cs”, “KF-96A-350cs”; “BELSIL DM100”, “BELSIL DM350” manufactured by Asahi Kasei Wacker Silicone Co., Ltd. These commercial products can be used.

The blending amount of the silicone oil in the mixture is not particularly limited, and examples thereof include 10 to 95% by weight, preferably 10 to 85% by weight based on the total amount of the mixture.

Further, the amount of the silicone oil blended in the external composition of the present invention is not particularly limited. For example, it is 0.05 to 10% by weight, preferably 0.05 to 7% by weight based on the total amount of the external composition. More preferred is 0.05 to 5% by weight.

The type of the porous powder used in the present invention is not particularly limited. For example, silica, talc, titanium oxide, mica, zinc oxide, kaolin, barium sulfate, bismuth oxychloride, aluminum hydroxide, aluminum silicate , Inorganic powders such as silicic anhydride, hydrous silicic acid, montmorillonite; polyester, polyethylene, polystyrene, methyl methacrylate resin, cellulose, nylon, copolymer of styrene and acrylic acid, polymer powder such as polypropylene, vinyl chloride, etc. Is mentioned. These porous powders may be used individually by 1 type, and may be used in combination of 2 or more type.

Of these porous powders, silica, mica, talc, and nylon are preferable from the viewpoint of more effectively improving skin familiarity and smoothness.

The average particle size of the porous powder is not particularly limited, and examples thereof include 1 to 25 μm, preferably 3 to 20 μm, and more preferably 3 to 15 μm. The oil absorption amount of the porous powder is not particularly limited, and examples thereof include 50 to 500 ml / 100 g, preferably 50 to 300 ml / 100 g, and more preferably 50 to 200 ml / 100 g. The specific surface area of the porous powder is not particularly limited, but is, for example, 30 to 1000 m ² / g, preferably 100 to 950 m ² / g, more preferably 200 to 800 m ² / g, and further preferably 200 to 600 m. ² / g. Here, the average particle diameter of the porous powder is an “arithmetic average value of particle diameters” defined in JIS Z 8901: 2006 “Test Powder and Test Particles”. The oil absorption of the porous powder is a value measured according to JIS K5101-13-1. The specific surface area of the porous powder is a BET specific surface area measured in accordance with JIS K6430 Appendix E.

The blending amount of the porous powder in the mixture is not particularly limited, and examples thereof include 3 to 95% by weight, preferably 3 to 85% by weight with respect to the total amount of the mixture.

Further, the amount of the porous powder blended in the external composition of the present invention is not particularly limited. For example, it is 0.05 to 10% by weight, preferably 0.05 to 7% by weight based on the total amount of the external composition. %, More preferably 0.05 to 5% by weight.

The type of the crosslinked methylpolysiloxane used in the present invention is not particularly limited as long as it has a tertiary crosslinked structure. For example, (dimethicone / vinyl dimethicone) crosspolymer, (dimethicone / vinyl dimethicone / methicone) Cross polymer, (dimethicone / phenylvinyl dimethicone) cross polymer, (vinyl dimethicone / lauryl dimethicone) cross polymer, (lauryl polydimethylsiloxyethyl dimethicone / bisvinyl dimethicone) cross polymer, and the like. These cross-linked methylpolysiloxanes may be used alone or in combination of two or more.

Among these cross-linked methylpolysiloxanes, (Dimethicone / Vinyl Dimethicone) Crosspolymer, (Dimethicone / Vinyl Dimethicone /) is more effective in suppressing stickiness and improving skin familiarity, smoothness and moisturizing feeling. Methicone) crosspolymers are preferred.

The average particle size of the cross-linked methylpolysiloxane is not particularly limited, and examples thereof include 1 to 40 μm, preferably 3 to 30 μm, and more preferably 3 to 25 μm. Here, the average particle diameter of the cross-linked methylpolysiloxane is an “arithmetic average value of particle diameters” defined in JIS Z 8901: 2006 “Test Powder and Test Particles”. Cross-linked methylpolysiloxanes satisfying the average particle size are commercially available, for example, as (dimethicone / vinyl dimethicone) crosspolymers “KMP-598” and “KMP-400” manufactured by Shin-Etsu Chemical Co., Ltd. Goods can be used.

The blending amount of the cross-linked methylpolysiloxane in the mixture is not particularly limited. For example, it is 0.5 to 80% by weight, preferably 1 to 70% by weight, more preferably 1 to 60% by weight, based on the total amount of the mixture. Is mentioned.

Further, the amount of the porous powder blended in the external composition of the present invention is not particularly limited. For example, it is 0.01 to 8% by weight, preferably 0.03 to 5% by weight based on the total amount of the external composition. %, More preferably 0.05 to 3% by weight.

Some of the silicone oil and the crosslinked methylpolysiloxane are commercially available in the form of a mixture. In the present invention, such a mixture of commercially available products can be used. Specific examples of commercially available mixtures of silicone oil and cross-linked methylpolysiloxane include “KSG-15” ((dimethicone / vinyl dimethicone) crosspolymer / cyclopentasiloxane) and “KSG” manufactured by Shin-Etsu Chemical Co., Ltd. -1510 "((dimethicone / vinyl dimethicone) cross polymer / methyl trimethicone)," KSG-16 "((dimethicone / vinyl dimethicone) cross polymer / dimethyl polysiloxane)," KSG-1610 "((dimethicone / vinyl dimethicone) Cross polymer / methyltrimethicone), “KSG-18A” ((dimethicone / phenylvinyldimethicone) crosspolymer / diphenylsiloxyphenyltrimethicone), “KSG-19” ((dimethicone / vinyldimethicone) crosspolymer / dimethylpoly Roxane), “KSG-016F” ((dimethicone / vinyl dimethicone) crosspolymer / dimethylpolysiloxane), “KSG-045Z” ((laurylpolydimethylsiloxyethyl dimethicone / bisvinyldimethicone) crosspolymer / cyclopentasiloxane), “ KSG-048Z "((lauryl polydimethylsiloxyethyl dimethicone / bisvinyl dimethicone) crosspolymer / dimethylpolysiloxane) and the like.

The ratio of the silicone oil, the porous powder and the cross-linked methylpolysiloxane may be appropriately set within the range satisfying the blending amount in the mixture or the composition for external use described above, but the stickiness is more effectively suppressed. From the point of further improving skin familiarity, smooth feeling and moisturizing feeling, silicone oil: porous powder: cross-linked methylpolysiloxane = 0.1 to 5: 0.05 to 5: 0.05 to 5 (weight) Ratio), preferably 1 to 5: 0.1 to 3: 0.05 to 2 (weight ratio), more preferably 1 to 4: 0.1 to 2: 0.1 to 2 (weight ratio). (Weight ratio) is more preferable.

water



The external composition of the present invention contains water as a base for dissolving the water-soluble thickener. In the external composition of the present invention, the concentration of water may be appropriately set according to the dosage form of the external composition, for example, 25 to 99% by weight, preferably 35 to 99% by weight, and more preferably 40%. Up to 99% by weight.

Other ingredients



The composition for external use of the present invention may contain a functional component exhibiting physiologically useful functionality, if necessary, in addition to the components described above. Such a functional ingredient is not particularly limited as long as it can be blended in cosmetics and external medicines, for example, water-soluble vitamins, oil-soluble vitamins, enzymes, peptides, amino acids, Hormones, various cytokines, various animal and plant extracts, steroids, moisturizers, whitening agents, crude drugs, antihistamines, astringents, cell activators, keratin softeners, local anesthetics, anti-inflammatory agents, antioxidants, antibacterial agents, antibacterial agents Agents, antipruritics, skin protectants, blood circulation promoters, sterols and the like.

Moreover, in order to prepare the external composition of this invention in a desired dosage form other than the component mentioned above, the other base and additive may be contained. Such bases and additives are not particularly limited as long as they can be incorporated into cosmetics and external medicines, for example, oily components, lower alcohols, surfactants, preservatives, perfumes, Examples include pigments, buffers, and pH adjusters.

The oily component may be, for example, hydrocarbons, fats and oils, higher alcohols, waxes, regardless of the origin of animal oils, vegetable oils, synthetic oils, etc., or solid oils, semi-solid oils, liquid oils, volatile oils, etc. Oils, hydrogenated oils, ester oils, fatty acids, fluorine oils, lanolin derivatives, oil-based gelling agents, oil-soluble UV absorbers, and the like. Specific examples of oil components include hydrocarbons such as liquid paraffin, squalane, petrolatum, polyisobutylene, polybutene, paraffin wax, ceresin wax, microcrystalline wax, and fisher trops wax; olive oil, castor oil, jojoba oil, mink Oils and fats such as macadamian nut oil; waxes such as beeswax, carnauba wax, candelilla wax, gay wax, and owl; montan wax, cetyl 2-ethylhexanoate, isotridecyl isostearate, isopropyl myristate, isopropyl palmitate Octyldodecyl myristate, cetyl trioctanoate, glyceryl tri-2-ethylhexanoate, polyglyceryl diisostearate, diglyceryl triisostearate, tribehenic acid Esters such as lyseryl, rosin acid pentaerythritol ester, neopentyl glycol dioctanoate, diisostearyl malate, cholesterol fatty acid ester, N-lauroyl-L-glutamate di (cholesteryl, behenyl, octyldodecyl), macadamian nut fatty acid phytosteryl Fatty acids such as stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid, oleic acid; higher alcohols such as cetyl alcohol, stearyl alcohol, cetostearyl alcohol, behenyl alcohol; perfluoropolyether, perfluorodecane, Fluorine oils such as perfluorooctane; Lanolin derivatives such as lanolin, lanolin acetate, lanolin fatty acid isopropyl, lanolin alcohol; dex Oily gelling agents such as phosphorus fatty acid esters, sucrose fatty acid esters, starch fatty acid esters, 12-hydroxystearic acid, aluminum stearate, calcium stearate; ethyl paraaminobenzoate, 2-ethylhexyl paramethoxycinnamate, 4-tert Oil-soluble UV absorbers such as butyl-4'-methoxydibenzoylmethane, octyltriazone, bisethylhexyloxyphenol methoxyphenyltriazine, hexyl diethylaminohydroxybenzoylbenzoate, methylenebisbenzotriazolyltetramethylbutylphenol, oxybenzone, etc. Is mentioned. These oil components may be used alone or in combination of two or more.

Examples of the lower alcohol include lower monohydric alcohols such as ethanol and isopropanol; polyhydric alcohols such as propylene glycol, 1,3-butylene glycol, dipropylene glycol, polyethylene glycol, glycerin, diglycerin, and polyglycerin; -Pentanediol and the like. These lower alcohols may be used individually by 1 type, and may be used in combination of 2 or more type.

Examples of the surfactant include nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants.

Specific examples of the 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, monoglycerin monoerucate, glycerin sesquioleate, mono Glyceryl stearate, α, α'-oleic acid pyroglutamic acid glycerin, monostearic acid glycerin malic acid, etc.); propylene glycol fatty acid esters (for example, Propylene glycol monostearate, etc .; hardened castor oil derivative; glycerin alkyl ether, POE-sorbitan fatty acid esters (for example, POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan tetraole) 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-glycerol monostearate, POE-glycerol monoisostearate, POE-glycerol triisostearate and other POE-monooleates); POE Fatty acid esters (eg POE-distearate, POE-monodiolate, ethylene glycol distearate, etc.); POE-alkyl ethers (eg POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE-cholestanol ether, etc.); Pluronic type (for example, Pluronic etc.); POE • POP-alkyl ethers (for example, POE • POP-cetyl ether, POE • POP-2-decyl) Tetradecyl ether, POE / POP-monobutyl ether, POE / POP-hydrogenated lanolin, POE / POP-glycerin ether, etc.); tetra-POE / tetra-POP-ethylenediamine condensates For example, Tetronic etc .; POE-castor oil hydrogenated 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.); alkanolamides (eg coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.); sucrose fatty acid esters; Examples include alkylethoxydimethylamine oxide; trioleyl phosphate.

Specific examples of the anionic surfactant include fatty acid soap (eg, sodium laurate, sodium palmitate, etc.); higher alkyl sulfates (eg, sodium lauryl sulfate, potassium lauryl sulfate); alkyl ether sulfates Salts (eg, POE-lauryl sulfate triethanolamine, POE-sodium lauryl sulfate); N-acyl sarcosine acids (eg, sodium lauroyl sarcosine); higher fatty acid amide sulfonates (eg, N-myristoyl-N-methyl) Sodium taurine, coconut oil fatty acid methyl taurine sodium, lauryl methyl taurine sodium, etc.); sulfosuccinate (eg, sodium di-2-ethylhexyl sulfosuccinate, monolauroyl monoethanolamine) Sodium polyoxyethylene sulfosuccinate, sodium lauryl polypropylene glycol sulfosuccinate, etc.); alkyl benzene sulfonates (eg, sodium linear dodecyl benzene sulfonate, triethanol amine linear dodecyl benzene sulfonate, linear dodecyl benzene sulfonic acid, etc.); higher fatty acid esters Sulfate esters (eg, hydrogenated coconut oil fatty acid sodium glycerine sulfate); N-acyl glutamate (eg, N-lauroyl glutamate monosodium, N-stearoyl glutamate disodium, N-myristoyl-L-glutamate monosodium); POE-alkyl ether carboxylic acid; POE-alkyl allyl ether carboxylate; α-olefin sulfonate; lauroyl Examples include sodium monoethanolamide succinate; ditriethanolamine N-palmitoyl aspartate and the like.

Specific examples of the cationic surfactant include alkyltrimethylammonium salts (for example, stearyltrimethylammonium chloride and lauryltrimethylammonium chloride); alkylpyridinium salts (for example, cetylpyridinium chloride); distearyldimethylammonium chloride Dimethylammonium salt; poly (N, N′-dimethyl-3,5-methylenepiperidinium); alkyl quaternary ammonium salt; alkyldimethylbenzylammonium salt; alkylisoquinolinium salt; Examples include benzalkonium; benzethonium chloride.

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, amidoamine-type amphoteric surfactants, lauryldimethylaminoacetic acid) Betaine, alkyl betaine, amide betaine, sulfobetaine, etc.).

These surfactants may be used individually by 1 type, and may be used in combination of 2 or more type.

Examples of the preservative include paraoxybenzoic acid ester, phenoxyethanol, benzoic acid, sodium benzoate, dehydroacetic acid, sodium dehydroacetate, benzyl alcohol, chlorobutanol, sorbic acid and salts thereof, and chlorhexidine gluconate. These preservatives may be used individually by 1 type, and may be used in combination of 2 or more type.

Production method



The external composition of the present invention can be produced according to a known production method. Specifically, the water-soluble thickener, the mixture prepared in advance, and other functional components, bases, additives, etc. that are added as necessary are added and mixed into a desired formulation form. It can be manufactured by preparing.

A preferred embodiment of the method for producing an external composition of the present invention includes a method including the following steps (1) to (6).



Step (1) A water-soluble thickener is stirred and dissolved in purified water (Preparation A).



Step (2) Silicone oil, porous powder and cross-linked methylpolysiloxane are mixed, stirred and uniformly dispersed (Preparation B).



Step (3) If necessary, the surfactant is stirred and mixed in a solvent such as 1,3-butylene glycol (Preparation C).



Step (4) When preparation C is prepared, preparation B is added to preparation C, stirred and homogenized (preparation D).



Step (5) While stirring the preparation A, the preparation B or the preparation D is added, and the mixture is stirred and homogenized.



Step (6) Then, if necessary, it is adjusted to a desired pH with a pH adjuster to obtain an external composition.

Dosage form and formulation



The external composition of the present invention may be in any dosage form such as liquid, solid, cream or gel. Among these dosage forms, the liquid external composition is suitable as a dosage form of the external composition of the present invention because it is easy to feel effects such as lack of stickiness, familiar skin, smooth feeling and moisturizing feeling.

The composition for external use of the present invention is used in the form of a preparation for external preparation for skin such as cosmetics, external medicine (including quasi-drugs for external use).

The formulation form of the composition for external use of the present invention is not particularly limited. For example, cosmetics such as creams, lotions, cosmetic liquids, emulsions, gels, lipsticks and foundations; liquids (lotions, sprays, aerosols, And topical medicines such as foams, ointments, creams, gels, patches and the like. Among these preparation forms, from the viewpoint of facilitating the realization of effects such as lack of stickiness, familiar skin, smooth feeling and moisturizing feeling, preferably cosmetics, more preferably lotion, cosmetic liquid and milky lotion. .

EXAMPLES The present invention will be described more specifically with reference to the following examples, but the present invention is not limited to these examples.

Test example 1



Skin cosmetics having the compositions shown in Tables 1 to 3 were produced. Specifically, it is as follows.



Step (1) After stirring and dissolving the carboxyvinyl polymer and the alkyl-modified carboxyvinyl polymer in purified water, glycerin was added and dissolved by stirring (Preparation A).



Step (2) Dimethylpolysiloxane, silica and (dimethicone / vinyl dimethicone crosspolymer) were mixed, stirred and uniformly dispersed (preparation B). At this time, it was confirmed that silica absorbed dimethylpolysiloxane and (dimethicone / vinyl dimethicone crosspolymer) was swollen by dimethylpolysiloxane.



Step (3) While heating to 50 ° C., polysorbate 60 and 1,3-butylene glycol were mixed with stirring (Preparation C).



Step (4) Preparation B was added to Preparation C, stirred and homogenized (Preparation D).



Step (5) While stirring the preparation A, the preparation D was added, and the mixture was stirred with a homomixer to make uniform.



Step (6) Thereafter, potassium hydroxide was added to adjust the pH to 6.5, and each skin cosmetic was produced.

In Comparative Examples 1 to 7, a part or all of dimethylpolysiloxane, silica and (dimethicone / vinyl dimethicone crosspolymer) were not blended, and in Comparative Example 8, the preparation B was not prepared. A skin cosmetic was produced in the same manner as in the above method except that in (4), dimethylpolysiloxane, silica, and (dimethicone / vinyl dimethicone crosspolymer) were added alone.

The raw materials used in Examples 1 to 17 and Comparative Examples 1 to 8 are as follows.



<Carboxyvinyl polymer>



Carbopol 980 (Lubrizol Advanced Materials)



<Alkyl-modified carboxyvinyl polymer>



Pemlen TR-1 (Lubrizol Advanced Materials)



<Silica>



God Ball D-25C (Suzuki Yushi Kogyo Co., Ltd., average particle size: 7 to 10 μm, specific surface area: 300 to 500 m ² / g, oil absorption: 70 to 110 ml / 100 g)



<Dimethylpolysiloxane>



SH200 C Fluid 350cs (Toray Dow Corning Co., Ltd.)



<(Dimethicone / Vinyl Dimethicone) Cross Polymer>



Examples 1 to 17 and Comparative Example 5: KMP-598 (Shin-Etsu Chemical Co., Ltd., average particle size 13 μm)



Comparative Examples 4, 7 and 8: BY29-129 (Toray Dow Corning Co., Ltd., average particle diameter of 4 μm)



<Polysorbate 60>



NIKKOL TS-10V (Nikko Chemicals Corporation)

About each obtained skin cosmetics, the following methods evaluated the non-stickiness at the time of application | coating, skin familiarity, the dry feeling after application | coating, the absence of a powdery feeling, and a moisturizing feeling.

(Evaluation methods)



10 evaluation monitors applied about 0.5g of each skin cosmetic to the arm, no stickiness when applied, skin familiarity when applied, dry feeling after application, no powderiness after application, The moisturizing feeling after application was evaluated. Specifically, the evaluation was carried out by conducting a questionnaire by Visual Analogue Scale (hereinafter referred to as VAS), which was set to “1” and “10” at the time of application and 30 seconds after application. The questionnaire results were averaged, and the evaluation results were summarized by rounding off the first decimal place.



<When applying>



(No stickiness)



"1" to feel stickiness



"10" which does not feel sticky



(Skin familiarity)



"1" not familiar with skin



"10" to adjust to the skin



<30 seconds after application>



(Smooth feeling)



"1" that does not feel smooth



"10" to feel smooth



(No powderiness)



"1" to feel powdery



"10" which does not feel powdery



(Moisturizing feeling)



"1" without moisturizing feeling (moist feeling)



"10" with moisturizing feeling (moist feeling)

The obtained results are shown in Tables 1 to 3. As is apparent from Table 1, when any one of dimethylpolysiloxane, silica and (dimethicone / vinyl dimethicone crosspolymer) is not included (Comparative Examples 1 to 7), dimethylpolysiloxane, silica and ( When the dimethicone / vinyl dimethicone crosspolymer) were added alone without being mixed in advance (Comparative Example 8), the results were satisfactory with respect to no stickiness, skin familiarity, smooth feeling and moisturizing feeling. did not become.

On the other hand, as is clear from Tables 2 and 3, by adding dimethylpolysiloxane and silica (dimethicone / vinyl dimethicone crosspolymer) in a premixed state, there was no stickiness, skin familiarity, and powder. All of the non-porosity, smooth feeling and moisturizing feeling were excellent (Examples 1 to 17). In particular, dimethylpolysiloxane: silica: (dimethicone / vinyl dimethicone) crosspolymer = 0.1 to 5: 0.1 to 5: 0.05 to 5 (weight ratio). And was able to.

The skin cosmetics shown in (1) to (5) below were also prepared and evaluated for use feeling under the same conditions as described above. It was excellent in terms of familiarity, lack of powderiness, smooth feeling and moisturizing feeling.



(1) Example 10 except that the carboxyvinyl polymer was replaced with “Hibiswako 103” (manufactured by Wako Pure Chemical Industries, Ltd.) and the alkyl-modified carboxyvinyl polymer was replaced with “AQUPEC HV-501ER” (Sumitomo Seika Co., Ltd.) Skin cosmetics that are similar to.



(2) The same as in Example 10 except that the carboxyvinyl polymer was changed to “xanthan gum” and the content thereof was changed to 0.5% by weight and the content of the alkyl-modified carboxyvinyl polymer was changed to 0.4% by weight. Skin cosmetics.



(3) Silica is “Sunsphere H-121” (manufactured by AGC S-Tech Co., Ltd., average particle size: 12 μm, specific surface area: 800 m ² / g, oil absorption: 150 ml / 100 g), or “silica microbead L-1500 "Skin cosmetic similar to Example 10 except that it was replaced with (manufactured by JGC Catalysts & Chemicals, average particle size: 5 μm, oil absorption: 130 ml / 100 g).



(4) Skin similar to Example 10 except that dimethylpolysiloxane was replaced with “KF-96A-350cs” (Shin-Etsu Chemical Co., Ltd.) or “BELSIL DM 350” (Asahi Kasei Wacker Silicone Co., Ltd.) Cosmetics.



(5) Skin makeup similar to Example 10 except that (dimethicone / vinyl dimethicone) crosspolymer was replaced with “Dow Corning EP-9215 Cosmetic Powder” (manufactured by Toray Dow Corning Co., Ltd., particle size 2-7 μm) Fee.

Formulation Examples 1-30



According to the formulations described in Tables 4 to 6, skin cosmetics were prepared in the same manner as in the examples. The obtained skin cosmetic was excellent in terms of lack of stickiness upon application, skin familiarity, smoothness after application, lack of powderiness, and moisturizing feeling.

Claims (7)

1. 
   
   
   A composition for external use, to which (A) a water-soluble thickener and (B) a mixture of silicone oil, porous powder and cross-linked methylpolysiloxane are added.
   
   
   
2. 
   
   
   The external composition according to claim 1, wherein the water-soluble thickener is a carboxyvinyl polymer and / or an alkyl-modified carboxyvinyl polymer.
   
   
   
3. 
   
   
   The external composition according to claim 1 or 2, wherein the silicone oil is at least one selected from the group consisting of dimethylpolysiloxane, cyclopentasiloxane, methyltrimethicone, and diphenylsiloxyphenyltrimethicone.
   
   
   
4. 
   
   
   The external composition according to any one of claims 1 to 3, wherein the porous powder is at least one selected from the group consisting of silica, mica, talc, and nylon.
   
   
   
5. 
   
   
   The composition for external use according to any one of claims 1 to 4, wherein the crosslinked methylpolysiloxane is a (dimethicone / vinyl dimethicone) crosspolymer.
   
   
   
6. 
   
   
   The mixture contains 0.1 to 5 parts by weight of silicone oil, 0.1 to 5 parts by weight of porous powder, and 0.05 to 5 parts by weight of cross-linked methylpolysiloxane. Item 6. The composition for external use according to any one of Items 1 to 5.
   
   
   
7. 
   
   
   The composition for external use according to any one of claims 1 to 6, which is a cosmetic.