JPH07330536A - Cosmetic - Google Patents

Abstract

PURPOSE:To provide a cosmetic containing a high-molecular silicone and a powdery polymethyl silsesquioxane, 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.% powdery polymethyl silsesquioxane as the active components. The compound of the formula exhibits a soft and rubbery state and its preferable example is methylphenyl polysiloxane. The powdery polymethyl silsesquioxane has a three-dimensional network structure of siloxane bonds and an intermediate structure between an inorganic material and an organic material in which one methyl group is bonded to a silicon atom. As this powdery polymethyl silsesquioxane, Tospearl 240 sold on the market is exemplified. As the form of cosmetics, a skin care cosmetic such as a lotion, a milky lotion or a cream, a make-up cosmetic such as a lip stick, an eye shadow or a foundation, a hair-care cosmetic, a detergent, etc., can be used.

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 present inventors have conducted earnest studies to obtain a cosmetic having an excellent feeling of use and yet having a sufficient moisturizing effect on the skin. , A high-molecular-weight silicone and polymethylsilsesquioxane powder are blended to remarkably suppress the oily feel and stickiness during application, have a smooth and smooth feel, and have a sufficient moisturizing effect. The inventors have found that the following can be obtained and completed the present invention. That is, the present invention contains 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 polymethylsilsesquioxane powder. The present invention relates to cosmetics.

[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. 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 polymethylsilsesquioxane powder used in the present invention has a network structure in which siloxane bonds extend three-dimensionally, and has an intermediate structure of inorganic and organic in which one methyl group is bonded to a silicon atom. is there. The particles of the polymethylsilsesquioxane powder have a spherical shape, and the average particle size is preferably 0.1 to 10 μm, particularly preferably 0.5 to 5 μm, and the particle size distribution is ± 30% of the average particle size. The range of is preferable. The polymethylsilsesquioxane powder is composed of true spherical particles having an average particle diameter of 2 μm, a true specific gravity of 1.3, a bulk specific gravity of 0.35, and a specific surface area of 15 to 30 m.
² / linseed oil Oil absorption of 75 ml / 100 g of white fine powder "Tospearl 120" and particles having an average particle size of 4 µm, true specific gravity of 1.3, bulk specific gravity of 0.17, specific surface area of 20 to 3
It is sold by Toshiba Silicone Co., Ltd. as "TOSPEARL 240" which is a white fine powder having 0 m ² / linseed oil absorption of 84 ml / 100 g, but is not limited thereto.

The content of the polymethylsilsesquioxane powder 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. 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.

In the present invention, the cosmetics include skin cosmetics such as lotion, milky lotion and cream, lipstick, eye shadow, foundation, enamel, eyeliner, makeup cosmetics such as mascara, hair restorer, hair styling agent,
Examples include hair cosmetics such as perms, shampoos, rinses, cleansing agents, and cleaning agents such as soaps.

Examples of oils preferably used in the cosmetics of the present invention include hydrocarbons such as liquid paraffin, paraffin wax, ceresin and squalane; waxes such as beeswax, spermaceti and carnauba wax; olive oil, camellia oil, jojoba oil. , Natural animal and vegetable oils such as lanolin; silicone oils,
Examples thereof include fatty acids, higher alcohols, and ester oils obtained by reacting these.

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. Further, the cosmetic of the present invention may further contain various optional components, for example, as a viscosity modifier, a high molecular compound such as polyvinyl alcohol, carboxyvinyl polymer, carboxymethylcellulose, polyvinylpyrrolidone, hydroxyethylcellulose, methylcellulose; gelatin, taracant gum. Natural gums such as; alcohols such as ethanol and isopropanol; and moisturizers such as propylene glycol, glycerin, 1,3-butylene glycol, dipropylene glycol, sorbitol, lactic acid, sodium lactate, sodium pyrrolidonecarboxylate, and the like. Examples of preservatives include paraoxybenzoic acid ester, benzoic acid, sodium benzoate, sorbic acid, potassium sorbate, and phenoxyethanol.

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

Since the high molecular weight silicone and polymethylsilsesquioxane powder used in the present invention are excellent in heat resistance and solvent resistance, the cosmetic composition of the present invention containing them has an oily feel and stickiness during application. It has no dryness, has a smooth and smooth feel, and has 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 wt% Ethanol 5.0 Glycerin 2.0 Carboxyvinyl polymer 0.2 Polyoxyethylene hydrogenated castor oil (40 E.O.) 0.5 Sorbitane monostearate 1.0 Cetyl-2-ethylhexanoate 5.0 Octyl methoxycinnamate 4.0 2-Hydroxy 4-methoxybenzophenone 3.0 Squalane 1.0 Decamethylcyclopentasiloxane 10.0 Methylphenylpolysiloxane 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) Polymethylsilsesqui Oxane powder 0.5 (Tospearl 240) Potassium hydroxide 0.1 Preservative Appropriate amount Fragrance Appropriate amount Purified water Residue A milky lotion was produced by a conventional method according to the following formulation.

Example 2 Emulsion wt% Squalane 5.0 Vaseline 1.0 Dimethylpolysiloxane 5cs 40.0 Dimethylpolysiloxane 2.0 (R ₁ and R ₂ are methyl groups, n = 7,000) Polyoxyalkylene-modified organopolysiloxane 2.5 Polymethylsilsesquioxy Sun powder 1.0 (Tospearl 120) Behenyltrimethylammonium chloride 0.2 2-Hydroxy-4-methoxybenzophenone-5-0.2 Sulfonate Na Polyethylene glycol 6000 1.0 1,3-Butylene glycol 5.0 Smectone 0.3 Preservatives Suitable amount Perfume Suitable amount Purified water Residue A cream was produced by a conventional method according to the following formulation.

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 1.0 (R ₁ and R ₂ are methyl groups, n = 7,000) Cetylphosphate 0.5 Sorbitan monostearate 2.0 Poly Oxyethylene hydrogenated castor oil (40E.O.) 0.5 Polymethylsilsesquioxane powder 2.0 (Tospearl 120) Glycerin 2.0 1,3-Butylene glycol 5.0 Preservative proper amount Perfume proper amount Purified water Residue Normal method according to the following formulation To produce a cream.

Example 4 Cream wt% Decamethylcyclopentasiloxane 31.0 Octylmethoxycinnamate 1.0 Terminal hydroxyl group-containing dimethylpolysiloxane 3.0 (R ₁ is a methyl group, R ₂ is a hydroxyl group, n = 5,000) Polyoxyalkylene-modified organopolysiloxane 4.0 Polymethylsilsesquioxane powder 2.0 (Tospearl 120) 2-Hydroxy-4-methoxybenzophenone 0.1 Glycerin 10.0 Preservative Suitable amount Perfume Suitable amount Purified water Residue A cosmetic base emulsion was prepared according to the following method.

Example 5 Makeup Base Emulsion Weight% Squalane 23.0 Jojoba Oil 3.0 Decamethylcyclopentasiloxane 20.0 Dimethylpolysiloxane 5cs 20.0 Octylmethoxycinnamate 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 Polymethylsilsesquioxane powder 0.5 (Tospearl 120) Smecton 0.7 Distearyldimethylammonium chloride 0.3 Polyethylene glycol 6000 1.0 Titanium oxide 1.0 Dipropylene glycol 7.0 Coloring pigment 0.1 Perfume suitable amount Purified water residue

Comparative Examples 1 to 3 Emulsions and creams of Comparative Examples 1 to 3 were obtained in the same manner as in Examples 1 to 3 except that the high molecular weight silicone and the polymethylsilsesquioxane powder were removed.

Comparative Example 4 Comparative Example 4 was obtained in the same manner as in Example 1 except that the high molecular weight silicone was removed.

Comparative Example 5 Comparative Example 5 was obtained in the same manner as in Example 1 except that the polymethylsilsesquioxane powder was removed.

<Effect Test> Examples 1 to 3 and Comparative Examples 1 to 1
The emulsion and cream obtained in 5 were applied to the face 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 has no oily feel when applied, has no stickiness on the skin after use, and is excellent in a smooth and smooth feel.

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display area A61K 7/50

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) Polymethyl silsesquioxane powder 0.1-1
A cosmetic comprising 5% by weight.