JP2001139444A - Skin cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cosmetic having a smooth and dry feeling of use and a good feeling of use without stickiness in combination when applied to the skin. SOLUTION: This cosmetic comprises a spherical silicone rubber powder and a polymethylsilsesquioxane powder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a skin cosmetic, and more particularly, to a skin cosmetic having a good feeling of use when applied to the skin.

[0002]

2. Description of the Related Art Conventionally, it has been desired that, when a cosmetic is applied on the skin, it imparts a smooth surface to the skin, that is, a smooth feeling. For the purpose of imparting such properties, it is known to blend silicone rubber powder as a raw material for cosmetics (JP-A-61-194409, JP-A-63-313710, JP-A-2-24).
3612, JP-A-6-1709, JP-A-8
-12524, JP-A-8-12545, JP-A-8-12546, etc.). These methods have a high effect of improving the feel to the skin and the slipperiness by blending the silicone rubber powder, but have a problem that stickiness may occur when used in a large amount.

[0003] A technique of blending polymethylsilsesquioxane powder to impart a dry feeling to the skin is also known (Japanese Patent Application Laid-Open No. Hei 5-43420). This polymethylsilsesquioxane powder has no elasticity and high hardness. Therefore, when used in a large amount, there is a problem that a squeaky feeling or a foreign-body sensation is caused when applied to the skin.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a cosmetic composition which, when applied to the skin, has both a smooth and smooth feeling of use and a good feeling of use without stickiness. Is what you do.

[0005]

Means for Solving the Problems As a result of intensive studies, the present inventors have found that by using a specific silicone rubber powder and a polymethylsilsesquiosan powder in combination, a cosmetic composition having a new feeling of use can be obtained. Were obtained, and the present invention was completed.

That is, the present invention provides a skin cosmetic comprising a spherical silicone rubber powder and a polymethylsilsesquioxane powder.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail. As the spherical silicone rubber powder used in the present invention, when measured according to JIS-K-6301,
Sheet hardness is 20-80 with A type spring hardness tester
Is preferable, and the average particle diameter thereof is preferably in the range of 1 to 200 μm. Spherical silicone rubber powder having an average particle diameter of less than 1 μm may not be able to impart a remarkable lubricating effect when using cosmetics, and spherical silicone rubber powder having an average particle diameter of more than 200 μm This is because, when applied to the skin, it may give a feeling of creaking or a feeling of foreign matter gurgling.

As such spherical silicone rubber powder, commercially available products can be suitably used. Specific examples thereof include KMP597 (average particle size: 5 μm, manufactured by Shin-Etsu Chemical Co., Ltd.) and KMP598 (average particle size: Particle size 13 μm, manufactured by Shin-Etsu Chemical Co., Ltd., KMP594 (average particle size 5 μm, manufactured by Shin-Etsu Chemical Co., Ltd.), KMP595 (average particle size 13 μm,
Shin-Etsu Chemical Co., Ltd.), Trefil E-505C (average particle size 3 μm, manufactured by Dow Corning Toray Silicone Co., Ltd.),
Trefil E-506C (average particle size: 3 μm, manufactured by Dow Corning Toray Silicone Co., Ltd.) and the like. These can be used alone or in combination of two or more.

[0009] The cosmetic of the present invention may be, for example, a lotion, an emulsion,
In the case of a dosage form having a high moisture content such as gel, cream, mist, spray, etc., sufficient dispersibility cannot be obtained with the spherical silicone rubber powder as it is, and a desired feeling in use may not be obtained. In such a case, by forming an emulsion containing silicone oil, the dispersibility is improved, and the spreadability on the skin is improved as compared with the case of using only the powder, and as a result, the good feel of the silicone rubber is also obtained. It is preferable because it becomes easy. For such emulsions, commercially available aqueous dispersions of silicone rubber powder can be suitably used,
As a specific example, KM-9729 (average particle size 2.5
μm, manufactured by Shin-Etsu Chemical Co., Ltd.), BY29-119 (average particle size: 3 μm, manufactured by Dow Corning Toray Silicone Co., Ltd.),
BY29-122 (average particle size 3 μm, manufactured by Dow Corning Toray Silicone Co., Ltd.) and the like. These can be used alone or in combination of two or more.

In the skin cosmetic of the present invention, the compounding amount of the spherical silicone rubber powder varies depending on the dosage form, but is generally preferably in the range of 0.01 to 20% by mass.
More preferably, it is 0.2 to 10% by mass. If the blending amount of the spherical silicone rubber powder is less than 0.01% by mass, a good feeling in use may not be obtained. Conversely, if the amount exceeds 20% by mass, the dispersibility becomes poor and a desirable feeling in use cannot be obtained. There is.

The polymethylsilsesquioxane powder used in the present invention has an average particle size of 0.1 from the viewpoint of feeling of use.
It is preferably 1 μm to 100 μm, more preferably 1 μm to 20 μm. If the average particle diameter is less than 0.1 μm, it may not be possible to sufficiently improve the sticky feeling. On the other hand, if the average particle diameter exceeds 100 μm, a rough feeling or the like may occur and a satisfactory feeling in use may not be sufficiently obtained. There are cases.

Specific examples of such polymethylsilsesquioxane powder include Tospearl 105 (average particle size: 0.5 μm, manufactured by Toshiba Silicone Co., Ltd.) and Tospearl 120
(Average particle size: 2.0 μm, manufactured by Toshiba Silicone Co., Ltd.), Tospearl 130 (average particle size: 3.0 μm, manufactured by Toshiba Silicone Co., Ltd.), Tospearl 145 (average particle size: 4.5 μm, manufactured by Toshiba Silicone Co., Ltd.), Tospearl 240 (average Particle size 4.0μ
m, manufactured by Toshiba Silicone Co., Ltd., Tospearl 3120 (average particle size: 12.0 μm, manufactured by Toshiba Silicone Co., Ltd.), Tospearl 2000B (average particle size: 6 μm, manufactured by Toshiba Silicone Co., Ltd.) and the like. These can be used alone or in combination of two or more.

The amount of the polymethylsilsesquioxane powder can be varied according to the purpose, and several different powders can be mixed and used. Polymethylsilsesquioxane powder is used in cosmetics in an amount of 0.1 to 30.
% By mass, and more preferably 0.5 to 20% by mass. If the blending amount of the polymethylsilsesquioxane powder is less than 0.1% by mass, a good feeling in use may not be obtained, while if it exceeds 30% by mass, sufficient dispersibility may not be obtained, and May decrease in stability.

[0014] In addition to the above-mentioned essential components, various additional components commonly used in conventional cosmetics can be added to the skin cosmetic of the present invention as desired within a range not to impair the object of the present invention. . Examples of such additional components include, for example,
Surfactants, oils, humectants, thickeners, polymer compounds, antibacterial agents, clathrate compounds, vitamins, ultraviolet absorbers, amino acids, anti-inflammatory agents, cooling agents, antioxidants, crude drugs, coloring Agents, fragrances, solvents (ethanol, water, etc.), fatty acids and the like. One of these additives may be used alone, or two or more of them may be used in combination, and may be blended at an appropriate stage in the preparation of cosmetics.

As the fragrance, for example, aliphatic hydrocarbons,
Hydrocarbons such as terpene hydrocarbons and aromatic hydrocarbons, alcohols such as aliphatic alcohols, terpene alcohols and aromatic alcohols, ethers such as aliphatic ethers and aromatic ethers, aliphatic oxides, terpene oxides and the like Oxides, aliphatic aldehydes, terpene aldehydes, hydrogenated aromatic aldehydes, aldehydes such as thioaldehydes and aromatic aldehydes, aliphatic ketones, terpene ketones, hydrogenated aromatic ketones, aliphatic cyclic ketones, non-benzene Aromatic ketones, ketones such as aromatic ketones, acetals, ketals, phenols,
Phenol ethers, fatty acids, terpene carboxylic acids, hydrogenated aromatic carboxylic acids, acids such as aromatic carboxylic acids, acid amides, aliphatic lactones, macrocyclic lactones,
Lactones such as terpene lactones, hydrogenated aromatic lactones, aromatic lactones, aliphatic esters, furan carboxylic esters, aliphatic cyclic carboxylic esters, cyclohexyl carboxylic esters, terpene carboxylic esters, aromatic Esters such as carboxylic acid esters, nitro musks, nitriles, amines, pyridines,
It is possible to use a mixture of one or more of synthetic fragrances such as quinolines, pyrroles, indole and other nitrogen-containing compounds and natural fragrances from animals and plants, and compounded fragrances containing natural fragrances and / or synthetic fragrances. . Also, for example, 1996
"Synthetic Fragrance Chemistry and Product Knowledge", written by Motoichi Indo published by Kagaku Kogyo Nippo, and MONTCLAIR, N. J. "Perfum", published by Steffen Arctander
and the flavoring agents described in "Flavor Chemicals" and the like can be used.

The cosmetic of the present invention can be in any form of solid, semi-solid, cream, liquid, etc., as long as it can be applied to the skin. Antiperspirants such as roll-on type, gel cosmetics,
Emulsions, lotions, creams such as hand creams, deodorants, and sprays such as powder sprays are preferred.

The method for producing the skin cosmetic of the present invention varies depending on the intended dosage form, etc., except that the spherical silicone rubber powder and the polymethylsilsesquioxane powder are mixed and mixed in a conventional manner. It can be manufactured according to a general method in a mold.

[0018]

Next, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited by these. In addition, the amount of each component in Examples and the like is represented by mass%.
It is. In addition, the composition of the fragrances A to C used in each Example and the like is as shown in Tables 3 to 5 below.

Examples 1 to 3 and Comparative Examples 1 to 5 A stick type antiperspirant was produced by the composition shown in Table 1 and the following production method, and when used, the feeling of use (non-stickiness, dryness, smoothness) And the dispersibility were evaluated by the evaluation method described below. The results are also shown in Table 1.

[0020]

[Table 1]

<Production Method> First, an oily organic compound, waxes and, if applicable, other optional components having a relatively low melting point are mixed and heated to obtain a liquid. Next, in this liquid,
Add the powdery antiperspirant active ingredient, inorganic powder, spherical silicone rubber powder and polymethylsilsesquioxane powder, and stir well. Then, if applicable, add fragrances, etc.
The mixture is poured into a stick mold and cooled to obtain a stick type antiperspirant.

Examples 4 to 7 and Comparative Examples 6 to 10 Gel cosmetics were produced according to the compositions shown in Table 2 and the following manufacturing method, and were used when applied (non-stickiness, dryness, smoothness). ) And dispersibility were evaluated by the evaluation method described below. The results are also shown in Table 2.

[0023]

[Table 2]

<Production Method> A thickener is dispersed in a solvent, an optional component separately dissolved in the solvent is mixed and stirred, and the viscosity is adjusted with a pH adjuster to form a gel. Next, powder (when two or more types are used, they are mixed in advance),
By adding spherical silicone rubber powder and polymethylsilsesquioxane powder and dispersing in gel,
Get a gel cosmetic.

<Evaluation method> (1) Judgment of feeling of use: Sensory evaluation was performed by 10 expert panelists. In other words, on the inside of the forearm of each paneler,
0.1 g / 10 cm of cosmetics (product of the present invention and comparative product)
^{After the two} coatings were applied and dried, the feeling of use (non-stickiness, smoothness, smoothness) was evaluated according to the following criteria. (Evaluation criteria) 5 points: Good usability 4 points: Somewhat good usability 3 points: Neither can be said 2 points: Somewhat bad usability 1 point: Bad usability

Next, from the scores obtained as a result of the five-level evaluation (absolute evaluation), an average score is obtained for each item.
Evaluation was performed based on the following criteria. (Evaluation criteria) ；: Average 5 points ○: Average 4.5 points or more △: 3 to 4.4 points ×; Less than 3 points

(2) Evaluation of Dispersibility Stability immediately after compounding and over time was evaluated based on the following evaluation criteria. (Evaluation criteria) ；: Uniformity is maintained immediately after compounding and even with time. Δ: Uniformly dispersed immediately after compounding, but becomes non-uniform with time. ×: Not uniformly dispersed immediately after compounding.

(3) Comprehensive Evaluation A judgment was made by summing up all the items of the feeling of use and all the results of dispersibility. (Evaluation Criteria) ；; No x, 2 or more ○; No x, 3 or more △; 1 x, or 2 or more x, 2 x that's all

Example 8 An emulsion was prepared using the following components by a conventional method. (Ingredient) (Amount) Polymethylsilsesquioxane powder (* 5) 2.0% Spherical silicone rubber powder (* 6) 1.0% Montmorillonite 1.0% Decaglyceryl triisostearate 0.5% Decaglyceryl monostearate 1.6% POE (20) sorbitan monooleate 3.0% Stearyl glycyrrhetinate 0.2% Oxidized coenzyme 0.3% Creatinine 0.2% Dimethyl silicone 0.5% Vegetable squalane 5 0.0% Jojoba oil 3.0% Almond oil 0.5% Macadamia nut oil 0.5% Sunflower oil 0.5% Lecithin 0.8% Behenyl alcohol 1.0% Stearyl alcohol 1.0% Glycerin 10.0% Dipropylene Glycol 5.0% Trimethylglycine 0.5% Carboxyvinyl polymer 0 Xanthan gum 0.1% Propylparaben 0.1% Methylparaben 0.3% Tocopherol acetate 0.2% Arginine 0.1% Jasper's beetle (Callophyllis 0.1% palmata) Water extract Darbilia extract 0.2% Ethanol 2.0% Perfume A Trace amount of purified water Remainder * 5 Tospearl 105: Toshiba Silicone Co., Ltd. (average particle size: 0.5 μm) * 6 KMP597: Shin-Etsu Chemical Co., Ltd. (Average particle size) Diameter 5μm)

Example 9 A lotion was prepared by the usual method using the following components. (Component) (Blending amount) Polymethylsilsesquioxane powder (* 7) 2.0% Silicone rubber powder aqueous dispersion (* 8) 1.0% Pyroglutamic acid isostearic acid 1.0% Polyoxyethylene hardened castor oil Quince extract 0.1% Oxidized coenzyme A 0.2% Trimethylglycine 1.0% Glycerin 6.0% 1,3-butylene glycol 2.0% Methylparaben 0.3% Propylparaben 0.1% (Callophyllis 0.5% adnat) Water extract Ethanol 8.0% Perfume C Trace amount of purified water Remainder * 7 Tospearl 120: Toshiba Silicone Co., Ltd. (average particle size 2.0 μm) * 8 BY29-119: Toray Dow Corning Silicone

Example 10 A hand cream was prepared by the usual method using the following components. (Ingredient) (Blending amount) Polymethylsilsesquioxane powder (* 9) 2.0% Spherical silicone rubber powder (* 10) 1.0% Liquid paraffin 5.0% Vegetable squalane 5.0% Bojoba oil 3.0% Dimethyl silicone 2.0% Cetyl palmitate 1.5% Polyethylene glycol monostearate (40EO) 2.0% Glycerin monostearate 2.0% Hexaglyceryl monostearate 0.5% Stearic acid 1. 5% POE (20) glyceryl monostearate 0.8% Stearyl glycyrrhetinate 0.1% Glycerin 3.0% 1,3-butylene glycol 5.0% Rosehip oil 0.2% Triisopropanolamine 0.1% Proline 0.1% Hydrogenated soybean phospholipid 1.0% Ketoconazole-Vegum T complex .25% Carboxyvinyl polymer 0.1% (Molecular weight: 2,000,000 to 3,000,000) Citric acid 0.1% Water extract of Callophyllis 3.0% crispata Methylparaben 0.3% Perfume B Trace amount of purified water Remainder * 9 Tospearl 130: manufactured by Toshiba Silicone Co., Ltd. (average particle size: 3.0 μm) * 10 KMP598: manufactured by Shin-Etsu Chemical Co., Ltd. (average particle size: 13 μm)

Example 11 A cream was prepared by the usual method using the following ingredients. (Component) (Blending amount) Polymethylsilsesquioxane powder (* 11) 2.0% Spherical silicone rubber powder (* 12) 1.0% Bentonite 0.5% Tetraglyceryl monoisostearate 1.0% Hexaglyceryl monostearate 0.8% Glyceryl monostearate 1.5% POE (40) glyceryl monostearate 1.5% Stearyl glycyrrhetinate 0.1% Oxidized coenzyme A 0.2% Creatinine 0.3% Palmitin Cetyl acid 1.0% Isopropyl palmitate 1.0% Dimethyl silicone 1.0% Squalane 8.0% Jojoba oil 3.0% Rosehip oil 0.05% Cetostearyl alcohol 3.0% Behenyl alcohol 0.5% Glycerin 1.0% 1,3-butylene glycol 5.0% dipropylene Glycol 1.0% carboxyvinyl polymer 0.05% (molecular weight 1,000,000 to 1.5 million) xanthan gum 0.3% propylparaben 0.1% methylparaben 0.3% vitamin E 0.2% citric acid trace sodium citrate trace Edetate 2Na 0.1% Black squirrel (Callophyllis 1.0% adhaerens) Water extract Darvilia extract 0.2% Triisopropanolamine 0.1% Perfume A trace amount of purified water Remainder * 11 Tospearl 145: manufactured by Toshiba Silicones (Average particle size: 4.5 μm) * 12 Trefil E-505C: manufactured by Dow Corning Toray Silicone Co., Ltd.

Example 12 Using the following components, a roll-on type antiperspirant was prepared by a conventional method. (Component) (Blending amount) Polymethylsilsesquioxane powder (* 13) 2.0% Silicone rubber powder aqueous dispersion (* 14) 1.0% Chlorhydroxyaluminum 20.0% Benzalkonium chloride solution ( AI 10%) 0.5% β-glycyrrhetinic acid 0.05% hydroxypropylcellulose 0.4% POP (17) butyl ether 1.5% Fragrance C 0.01% Purified water 7.5% Ethanol balance * 13 Tospearl 240: Toshiba Silicone Co., Ltd. (average particle size 4.0 μm) * 14 BY29-122: Dow Corning Toray Silicone Co., Ltd.

Example 13 A gel deodorant was prepared by a conventional method using the following components. (Ingredient) (Blending amount) Polymethylsilsesquioxane powder (* 15) 3.0% Carboxyvinyl polymer 0.3% (Molecular weight 1,000,000 to 1.5,000,000) Triethanolamine 0.25% Isopropylmethylphenol 0.0% 5% Triclosan 0.2% Silicone rubber powder aqueous dispersion (* 16) 1.0% POE (60) hydrogenated castor oil 0.3% Birch extract 0.1% Peony extract 0.1% Mint oil 0.01% Sodium oxybenzone sulfonate 0.1% Methyl paraben 0.1% Ethanol 28.0% Perfume B Trace amount of purified water Remainder * 15 Tospearl 2000B: manufactured by Toshiba Silicone Co., Ltd. (average particle size: 6.0 μm) * 16 KM-9729: Shin-Etsu Chemical Co., Ltd. Company

Example 14 A powder spray was prepared by a conventional method using the following components. (Component) (Blending amount) Polymethylsilsesquioxane powder (* 17) 3.0% Spherical silicone rubber powder (* 18) 1.0% Chlorohydroxyaluminum 24.4% Isopropylmethylphenol 0.1% Triclosan 0.2% Silicic anhydride (average particle size: 12 μm) 5.0% Magnesia silica (average particle size: 7.0 μm) 18.0% Decamethylcyclopentasiloxane 5.0% Methylpolysiloxane (10cs) 5.0% POE (20) glyceryl triisostearate 15.5% Dipropylene glycol 1.0% Stearyl glycyrrhetinate 0.02% Birch extract 0.1% Vegetable squalane 0.1% Fragrance C 0.94% Isopropyl myristate * 17 KMP590: manufactured by Shin-Etsu Chemical Co., Ltd. (average particle size: 6.0 μm) * 18 Refill E-506C: a Dow Corning Toray Silicone Co. The compositions of the stock solution, was sprayed using liquefied petroleum gas of 0.15 MPa (20 ° C.) as propellant. The composition ratio of the stock solution / propellant was 7/93.

The skin cosmetics obtained in Examples 8 to 14 all have a feeling of use (non-stickiness, dry feeling,
(Smoothness) and dispersibility.

[0037]

[Table 3]

[0038]

[Table 4]

[0039]

[Table 5]

[0040]

EFFECT OF THE INVENTION The cosmetic of the present invention, when applied to the skin, has excellent feeling of use such as non-stickiness, smoothness and smoothness, and also has good dispersibility of the cosmetic. It can be used for a wide range of applications as skin cosmetics.

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Claims (1)

[Claims] 1. A skin cosmetic comprising a spherical silicone rubber powder and a polymethylsilsesquioxane powder.