JPH07330537A - Cosmetic - Google Patents

Abstract

PURPOSE:To provide a cosmetic containing a high-molecular silicone and a cross-linked dimethylsilicone elastic material, free from oily touch in application or stickiness of the skin after application and having a dry and comfortable feeling in use. CONSTITUTION:This cosmetic contains 0.1 to 15wt.% one or more kinds of high-molecular silicones represented by the formula [R1 is methyl or phenyl; R2 is methyl or OH; (n) is 3000 to 20000] and 0.1 to 15wt.% cross-linked dimethylsilicone elastic material as the active components. The compound of the formula exhibits a soft and rubbery state and its preferable example is methylphenyl polysiloxane. The cross-linked dimethylsilicone elastic material has a three-dimensional network structure of siloxane bonds and an intermediate structure between an inorganic material and an organic material in which two methyl groups are bonded to a silicon atom. As this elastic material, a particle having a true sphere shape and 3 to 5mum particle size is preferably used and Torefil E-505C sold on the market is exemplified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic composition which is remarkably improved in feeling of use, has no oily feeling upon application, is not sticky to the skin after use, and has a silky, smooth feel.

[0002]

2. Description of the Related Art Conventionally, cosmetics such as creams and emulsions have been given a moist and rich feel after use,
Moreover, in order to provide a sufficient moisturizing effect, various oil components and moisturizing agents such as glycerin and sodium pyrrolidonecarboxylate have been blended in relatively large amounts.

[0003]

However, if an attempt is made to enhance the moisturizing effect by emphasizing the moist and rich feeling of use, the oily feeling and the sticky feeling at the time of application are increased, and a sufficient moisturizing effect to the skin is obtained. It was difficult to satisfy a good usability at the same time.

[0004]

In view of such circumstances, the inventors of the present invention have conducted earnest studies to obtain a cosmetic having an excellent feeling of use and having a sufficient moisturizing effect on the skin. By blending high molecular weight silicone and dimethyl silicone crosslinked elastic material, oily feeling and sticky feeling during application are remarkably suppressed, a smooth and smooth feeling is obtained, and a cosmetic having a sufficient moisturizing effect is obtained. Therefore, the present invention has been completed. That is, the present invention is characterized by containing 0.1 to 15% by weight of one or more high molecular weight silicones represented by the following general formula 2 and 0.1 to 15% by weight of a dimethyl silicone crosslinked elastic material. Regarding cosmetics to do.

[0005]

[Chemical 2] [In the formula, R ₁ represents a methyl group or a phenyl group (provided that R ₁
Is a phenyl group), R ₂ represents a methyl group or a hydroxyl group. Further, n represents an integer of 3,000 to 20,000. ]

The high molecular weight silicone used in the present invention has a soft rubber-like shape, and examples thereof include dimethyl polysiloxane, methylphenyl polysiloxane, terminal hydroxyl group-containing dimethyl polysiloxane and terminal hydroxyl group-containing methylphenyl polysiloxane.

When the high molecular weight silicone of the present invention is blended, it must be dissolved in a volatile oil component such as a volatile low boiling chain silicone oil, a low boiling cyclic silicone oil, or a low boiling inparaffin hydrocarbon. Is preferred.

The blending amount of the high molecular weight silicone in the present invention is 0.1 to 15% by weight, preferably 0.2 to 10% by weight based on the total amount of the cosmetic of the present invention. If it is less than 0.1% by weight, a sufficient effect cannot be obtained, and if it is more than 15% by weight, it becomes difficult to dissolve in other components in the cosmetic.

The dimethylsilicone crosslinked elastic material used in the present invention has a network structure in which siloxane bonds extend three-dimensionally and has an intermediate structure between inorganic and organic in which two methyl groups are bonded to a silicon atom. The particle shape of the dimethyl silicone crosslinked elastic material is spherical, and the average particle size is 15
It is preferably not more than μm, particularly preferably 3 to 5 μm. The dimethylsilicone crosslinked elastic material is a white fine powder consisting of true spherical particles having an average particle size of 3 μm, a true specific gravity of 0.97, a bulk specific gravity of 0.18, and a liquid paraffin oil absorption amount of 72 g / 100 g.
E-506C "and" trefill E-505C "containing dimethyl silicone oil inside the powder.
Is sold by Toray Dow Corning Silicone Co., Ltd., but is not limited thereto.

The content of the dimethyl silicone crosslinked elastic material in the present invention is 0.1 to 15% by weight, preferably 0.1 to 10% by weight based on the total amount of the cosmetic of the present invention. If it is less than 0.1% by weight, a sufficient effect cannot be obtained, and if it is more than 15% by weight, it becomes difficult to mix it.

The cosmetic composition of the present invention may further contain various optional ingredients. Suitable oils include, for example, liquid paraffin, paraffin wax, ceresin,
Hydrocarbons such as squalane; waxes such as beeswax, whale wax and carnauba wax; natural animal and vegetable oils such as olive oil, camellia oil, jojoba oil and lanolin; silicone oils, fatty acids,
Examples include higher alcohols and ester oils obtained by reacting these.

Further, as the surfactant, polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester,
Polyoxyethylene hydrogenated castor oil alkyl sulfate, polyoxyethylene alkyl sulfate, alkyl phosphate, polyoxyethylene alkyl phosphate, fatty acid alkali metal salt, sorbitan fatty acid ester, glycerin fatty acid ester and the like are used.

In addition, for example, high molecular compounds such as polyvinyl alcohol, carboxyvinyl polymer, carboxymethylcellulose, polyvinylpyrrolidone, hydroxyethylcellulose, and methylcellulose as viscosity modifiers; natural gums such as gelatin and taracant gum; alcohols such as ethanol and isopropanol. , As a moisturizer, propylene glycol, glycerin, 1,3-
Butylene glycol, dipropylene glycol, sorbitol, lactic acid, sodium lactate, sodium pyrrolidonecarboxylate and the like, and further preservatives include paraoxybenzoic acid ester, benzoic acid, sodium benzoate, sorbic acid, potassium sorbate, phenoxyethanol and the like, respectively. To be

In addition, components generally used in cosmetics such as ultraviolet absorbers, dyes, powders, sequestering agents, antioxidants, astringents, fragrances and film agents can be added.

Since the high molecular weight silicone and dimethyl silicone crosslinked elastic material used in the present invention are excellent in heat resistance and solvent resistance, the cosmetic of the present invention containing them is
It has an oily feel at the time of application, no stickiness, a smooth and smooth feel, and an excellent moisturizing effect.

[0016]

EXAMPLES The present invention is described in more detail below by showing Examples of the present invention, but the present invention is not limited to these Examples. A milky lotion was produced by a conventional method according to the following formulation.

Example 1 Emulsion Weight% Ethanol 3.0 Glycerin 2.0 1,3-Butylene Glycol 2.0 Carboxyvinyl Polymer 0.2 Polyoxyethylene hydrogenated castor oil (40 E.O.) 1.0 Sorbitan monostearate 1.0 Decamethylcyclopentasiloxane 10.0 Methyl Phenylpolysiloxane 2.0 (10% of R ₁ is a phenyl group, the rest is a methyl group, R ₂ is a methyl group, n = 15,000) Dimethyl silicone crosslinked elastic material 0.5 (Trefil E-505C) Potassium hydroxide 0.1 Preservative A suitable amount Fragrance A proper amount Purified water Residue A milky lotion was produced by a conventional method according to the following formulation.

Example 2 Emulsion wt% Microcrystalline Wax 1.0 Lanolin 1.0 Dimethylpolysiloxane 5cs 40.0 Dimethylpolysiloxane 2.0 (R ₁ and R ₂ are methyl groups, n = 7,000) Dimethyl silicone crosslinked elastic material 2.0 (Trefil E-506C ) Sorbitan sesquioleate 4.0 Polyoxyethylene sorbitan monooleate 1.0 (20E.O.) 1,3-butylene glycol 5.0 Preservative Adequate amount Fragrance Adequate amount Purified water Residual Cream Was manufactured.

Example 3 Cream wt% Stearic acid 2.0 Cetanol 1.0 Cholesterol 1.0 Squalane 10.0 Jojoba oil 2.0 Olive oil 2.0 Dimethylpolysiloxane 20cs 16.0 Dimethylpolysiloxane 1.0 (R ₁ and R ₂ are methyl groups, n = 7,000) Cetylphosphoric acid 0.5 Mono Sorbitan stearate 2.0 Polyoxyethylene hydrogenated castor oil (40E.O.) 0.5 Dimethyl silicone crosslinked elastic material 2.0 (Trefil E-506C) Glycerin 2.0 1,3-Butylene glycol 5.0 Preservatives proper amount Perfume proper amount Purified water Residual residual A cream was produced by a conventional method according to the prescription.

Example 4 Cream wt% Decamethylcyclopentasiloxane 31.0 2-Ethylhexyl-p-dimethylaminobenzoate 1.0 Terminal hydroxyl group-containing dimethylpolysiloxane 3.0 (R ₁ is a methyl group, R ₂ is a hydroxyl group, n = 5,000) Polyoxy Alkylene-modified organopolysiloxane 4.0 Polymethylsilicone crosslinked elastic material 2.0 (Trefil E-505C) 2-Hydroxy-4-methoxybenzophenone 0.1 Glycerin 10.0 Preservatives appropriate amount Fragrance appropriate amount Purified water Residue A base emulsion was produced.

Example 5 Makeup Base Emulsion Weight% Squalane 23.0 Jojoba Oil 3.0 Decamethylcyclopentasiloxane 20.0 Dimethylpolysiloxane 5cs 20.0 2-Ethylhexyl-p-dimethylaminobenzoate 2.0 Terminal hydroxyl group-containing dimethylpolysiloxane 1.0 (R ₁ is a methyl group) , R ₂ is a hydroxyl group, n = 5,000) Polyoxyalkylene-modified organopolysiloxane 2.0 Dimethyl silicone crosslinked elastic material 0.5 (Trefil E-506C) Smecton 0.7 Distearyldimethylammonium chloride 0.3 Polyethylene glycol 6000 1.0 Titanium oxide 1.0 Dipropylene glycol 7.0 Coloring Pigment 0.1 Fragrance Suitable amount Purified water Residual

Comparative Examples 1 to 4 Comparative Examples 1 to 4 were carried out in the same manner as Examples 1 to 4 except that the high molecular weight silicone and dimethyl silicone crosslinked elastic material were removed.
4 emulsion and cream were obtained.

Comparative Example 5 Comparative Example 5 was obtained in the same manner as in Example 1 except that the high molecular weight silicone was removed.

Comparative Example 6 Comparative Example 6 was obtained in the same manner as in Example 1 except that the dimethyl silicone crosslinked elastic material was removed.

<Effect Test> Examples 1 to 4 and Comparative Examples 1 to 1
The emulsion and cream obtained in 6 were applied to the faces of 30 beauty engineers, and the feeling of use was evaluated by self-report. The results are shown in Table 1. The criteria for judgment are as follows.

<Criteria> 1. Oily sensation during application ◎: More than 80% of beauty technicians answered that they did not have oily sensation. ○: More than 60% of the beauty technicians answered that they had no oily feeling. Δ: More than 40% of the beauty technicians answered that they did not feel oily. X: Less than 40% of the beauty technicians answered that they did not feel oily. 2. Feel after use (1) Stickiness ◎: More than 80% of beauty technicians answered that they were not sticky. ○: More than 60% of beauty technicians answered that they were not sticky. △: 40% or more of the beauty technicians answered that they were not sticky. X: Less than 40% of the beauty technicians answered that they were not sticky. (2) Smoothness ◎: More than 80% of beauty technicians answered that they have a smooth feeling. ○: More than 60% of beauty technicians answered that they had a dry feeling. Δ: More than 40% of beauty technicians answered that they had a dry feeling. ×: 40% of beauty technicians answered that they had a dry feeling
Was less than.

[0027]

[Table 1]

From the evaluation results shown in Table 1, it was found that the cosmetics of the present invention had no oily feel at the time of application, had no stickiness on the skin after use, and had an excellent smooth and slippery feel.

[0029]

EFFECT OF THE INVENTION The cosmetic composition of the present invention is a cosmetic composition which does not have an oily feel or stickiness during application and is excellent in a smooth and slippery feel.

Claims (1)

[Claims] 1. (A) 0.1 to 15% by weight of one or more high molecular weight silicones represented by the following general formula 1 [In the formula, R ₁ represents a methyl group or a phenyl group (provided that R ₁
Is a phenyl group), R ₂ represents a methyl group or a hydroxyl group. Further, n represents an integer of 3,000 to 20,000. ] (B) A dimethylsilicone crosslinked elastic material is contained in an amount of 0.1 to 15% by weight.