JP3100091B2 - Skin cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skin cosmetic which imparts a smooth feeling to the skin and which is moist and non-greasy.

[0002]

2. Description of the Related Art In spite of a demand for a skin cosmetic which imparts a slippery feeling to the skin, a perfect product such as stickiness or moistness has not yet been obtained.

[0003]

There is a technique of blending a high-molecular silicone as a base for giving a smooth feeling to the skin. However, in order to mix high-molecular silicone, low-molecular silicone must be used as a solvent for dissolving it, and although it has a refreshing and slippery feeling, the squeaky feeling and bulkiness unique to silicone remain. It was something that would. Therefore, various moisturizing agents have been blended to eliminate creaking and bulkiness, but sufficient humectants have not been obtained.

[0004] Various water-soluble polymers have been studied as a base for imparting a slippery feeling to the skin. However, in this method, although a product having a slippery feeling can be obtained, the usability tends to be sticky, and a satisfactory product has not been obtained.

[0005]

Means for Solving the Problems In view of such circumstances, the present inventors have conducted intensive studies and as a result, have found that one or more of high molecular silicones and one or more of polyethylene glycol having a molecular weight of 500,000 to 5,000,000 are contained. By doing so, it eliminates the squeaky and bulky sensations that are characteristic of silicone, gives a smoother feeling than ever before, and gives a moist, non-sticky skin cosmetic. The present invention has been completed.

That is, the present invention provides a skin cosmetic comprising one or more kinds of high molecular silicone represented by the following general formula 2, and one or more kinds of polyethylene glycol having a molecular weight of 500,000 to 5,000,000. Fees.

[0007]

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(R ₁ represents a methyl group or a part thereof is a phenyl group, R ₂ represents a methyl group or a hydroxyl group.
Indicate an integer between 500 and 20,000)

The high molecular silicone used in the present invention comprises:
It has a high molecular weight represented by the above general formula 2, and the value of n in the formula is 500 to 20,000. The property is a high-viscosity liquid or soft rubber at room temperature.

[0010] Specific structures include dimethylpolysiloxane, methylphenylpolysiloxane, dimethylpolysiloxane having a terminal hydroxyl group, and methylphenylpolysiloxane having a terminal hydroxyl group.

The content of the high molecular silicone is 0.1 to 10% by weight, preferably 0.1 to 5% by weight in the total amount of the cosmetic.
It is. If the content is less than 0.1% by weight, a sufficient effect cannot be obtained.
If it exceeds 10% by weight, it becomes difficult to dissolve.

When the polymer silicone of the present invention is blended into skin cosmetics, it is preferable to blend it by dissolving it in low molecular oil. Of course, they may be separately incorporated into skin cosmetics and dissolved in the system.

Examples of the low molecular oil component include a chain silicone, a cyclic silicone and a low-boiling isoparaffinic hydrocarbon.

The high molecular weight polyethylene glycol used in the present invention has a molecular weight of 500,000 to 5,000,000.
Available from Union Carbide Corporation (trade name; Polyox).

The content of the high molecular weight polyethylene glycol is 0.01 to 5% by weight, preferably 0.01 to 2% by weight, based on the total amount of the cosmetic. If the content is less than 0.01% by weight, a sufficient effect cannot be obtained, and if it exceeds 5% by weight, it is difficult to dissolve, and even in the system of the present invention, stickiness is observed.

The dosage form of the present invention is optional, and may be any of a solubilizing system, an emulsifying system, a powder dispersion system, a two-layer oil-water system, and an oil-water-powder.
Either layer system may be used.

The skin cosmetic of the present invention is used for skin,
Includes all for protection and cosmetic purposes, as required, various oil components, moisturizing components, surfactants, water-soluble polymer substances (including anionic, nonionic, cationic), preservatives Raw materials generally used in cosmetics, such as agents, chelating agents, drugs, fragrances, antioxidants, powders, and water, can be added.

For example, as an oil, liquid paraffin,
Vaseline, paraffin wax, microcrystalline wax, ceresin, ozokerite, squalane, beeswax, carnauba wax, olive oil, lanolin, higher alcohols, fatty acids, esters of higher alcohols and fatty acids,
Commonly used in cosmetics such as dicone oil such as dimethylpolysiloxane, methylphenylpolysiloxane, dimethylcyclopolysiloxane, diarylpolysiloxane, fatty acid-modified polysiloxane, higher alcohol-modified polysiloxane, amino-modified polysiloxane, silicone resin and silicone rubber Oil is used.

Examples of the surfactant include polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, sorbitan fatty acid ester, glycerin fatty acid ester,
Nonionic surfactants such as polyglycerin fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene-modified organopolysiloxane, polyoxyalkylene-modified organopolysiloxane, etc. Anionic surfactants represented by fatty acid soaps such as silicone surfactants, sodium stearate, and triethanolamine palmitate; and surfactants commonly used in cosmetics such as cationic surfactants and amphoteric surfactants are used. Can be

Examples of the water-soluble polymer include carboxymethylcellulose, methylcellulose, hydroxymethylcellulose, polyvinyl alcohol, polyvinylpyrrolidone, tragacanth gum, carrageenan, locust bean gum, dextrin, dextrin fatty acid ester, carboxyvinyl polymer, xanthen gum, gelatin,
Water-soluble polymers commonly used in cosmetics such as sodium alginate, gum arabic, sodium hyaluronate and sodium chondroitin sulfate are used.

Examples of humectants include sorbitol, xylitol, glycerin, maltitol, propylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, sodium pyrrolidone carboxylate, lactic acid, sodium lactate, low molecular weight polyethylene glycol and the like. Moisturizers commonly used in cosmetics are used.

As preservatives, preservatives commonly used in cosmetics such as alkyl paraoxybenzoate, sodium benzoate and potassium sorbate are used, and as drugs, vitamins, crude drugs, anti-inflammatory agents, bactericides and the like are used. Drugs commonly used in cosmetics are used.

[0023]

The present invention will be described in more detail with reference to the following examples, which are not intended to limit the present invention. All amounts are by weight.

Example 1 Emulsion Oil phase compounding amount (1) Stearic acid 2.0 (2) Cetyl alcohol 1.5 (3) Decamethylpentacyclosiloxane 3.0 (4) Dimethylpolysiloxane 6cs 5.0 ( 5) Dimethylpolysiloxane 3.0 (R ₁ and R ₂ are methyl groups, n = 500) (6) Vaseline 0.5 (7) Polyoxyethylene monooleate 2.0 Water phase part (8) Carboxyvinyl Polymer 0.2 (9) polyethylene glycol (molecular weight 500,000) 0.5 (10) 1.3-butylene glycol 5.0 (11) glycerin 3.0 (12) potassium hydroxide 1.0 (13) methylparaben 14) Ion exchange water balance

(Production method) The aqueous phase parts (8) to (14) were
, And a mixture obtained by mixing and dissolving the oil phase portions (1) to (7) was added thereto, and emulsification was performed, followed by cooling treatment to obtain an emulsion.

Comparative Example 1 Emulsion Oil phase compounding amount (1) 2.0 stearic acid (2) cetyl alcohol 1.5 (3) decamethylpentacyclosiloxane 3.0 (4) dimethylpolysiloxane 6cs 5.0 ( 5) Dimethylpolysiloxane 3.0 (R ₁ and R ₂ are methyl groups, n = 500) (6) Vaseline 0.5 (7) Polyoxyethylene monooleate 2.0 Water phase part (8) Carboxyvinyl Polymer 0.2 (9) Polyethylene glycol (molecular weight 20,000) 2.0 (10) 1.3-butylene glycol 5.0 (11) Glycerin 3.0 (12) Potassium hydroxide 1.0 (13) Methyl paraben 14) Ion exchange water balance

(Manufacturing method) According to the first embodiment.

Comparative Example 2 Emulsion Oil phase compounding amount (1) Stearic acid 2.0 (2) Cetyl alcohol 1.5 (3) Decamethylpentacyclosiloxane 3.0 (4) Dimethylpolysiloxane 6cs 5.0 ( 5) Vaseline 0.5 (6) Polyoxyethylene monooleate 2.0 Aqueous phase (7) Carboxyvinyl polymer 0.2 (8) Polyethylene glycol (molecular weight 500,000) 0.5 (9) 1.3 Butylene glycol 5.0 (10) Glycerin 3.0 (11) Potassium hydroxide 1.0 (12) Suitable amount of methyl paraben (13) Ion exchange water balance

(Manufacturing method) According to the first embodiment.

Example 2 Body Essence Oil Phase Compounding Amount (1) Squalane 2.0 (2) Isopropyl myristate 2.0 (3) Polyoxyethylene (30) Cholestanol ether 0.3 (4) Terminal hydroxyl group-containing dimethylpolysiloxane 0.1 (R ₁ is methyl, R ₂ is a hydroxyl group, n = 10,000) (5) methylphenyl polysiloxane 2.0 (6) tocopherol acetate 0.05 (7) perfume qs water phase portion 1 ( 8) dipropylene glycol 5.0 aqueous phase 2 (9) carboxyvinyl polymer 0.1 (10) 1,3-butylene glycol 5.0 (11) polyethylene glycol (molecular weight 1,000,000) 4.5 (12) methylparaben (13) Ethyl alcohol 5.0 (14) Ion exchange water balance

(Production method) The oil phase (1) is added to the water phase 1 (8).
To (7), and emulsified by increasing the shearing force.
Add ~ (14) to get body essence.

Example 3 Two-Layer Lotion Oil Phase Part Blending Amount (1) Octamethyltetracyclosiloxane 2.0 (2) Methylphenylpolysiloxane 2.0 (3) Methylphenylpolysiloxane containing hydroxyl group at terminal end 1.0 (5% of R ₁ is a phenyl group and the remaining is a methyl group R ₂ is a hydroxyl group, n = 20,000) (4) Methylphenylpolysiloxane 1.0 (10% of R ₁ is a phenyl group and the remaining is a methyl group R ₂ is (5) polyoxyethylene sorbitan tetraoleate 0.6 aqueous phase part (6) propylene glycol 5.0 (7) sorbitol 1.0 (8) glycerin 3.0 (9) polyethylene Glycol (Molecular weight 1,000,000) 0.01 (10) Methyl paraben Suitable amount (11) Ethyl alcohol 5.0 (12) Deionized water balance

(Production method) After dissolving the aqueous phase parts (6) to (12), the oil phase parts (1) to (5) are added with stirring to obtain a two-layer lotion.

Example 4 Cream Oil Phase Compounding Amount (1) Octamethyltetracyclosiloxane 3.0 (2) Methylphenylpolysiloxane 3.0 (3) Dimethylpolysiloxane 5.0 (R ₁ and R ₂ are methyl) (4) stearic acid 2.0 (5) cetyl alcohol 1.5 (6) stearyl alcohol 0.5 (7) white petrolatum 1.0 (8) glyceryl tri-2-ethylhexanoate 0 (9) Cetyl octoate 3.0 (10) Glyceryl monostearate 3.0 (11) Polyoxyethylene sorbitan monostearate 1.0 (12) Ethyl paraben 0.2 (13) Butyl paraben 0.1 (14) Appropriate amount of fragrance Aqueous phase (15) Smecton SA (synthetic clay mineral manufactured by Kunimine Industries) 1.0 (16) 1,3-butylene glycol 10.0 17) Glycerin 5.0 (18) Polyethylene glycol (molecular weight 3,000,000) 3.0 (19) Potassium hydroxide 1.0 (20) Magnesium ascorbate 0.02 (21) Sodium hyaluronate 0.05 (22) Deionized water balance

(Manufacturing method) According to the first embodiment.

Example 5 Sunscreen Oil Phase Compounding Amount (1) Dimethylpolysiloxane 5.0 (2) Methylphenylpolysiloxane 5.0 (3) Dimethylpolysiloxane 10.0 (R ₁ and R ₂ are methyl groups) (N = 20,000) (4) Trimethylsiloxysilicic acid 1.0 (5) Stearic acid 1.0 (6) Palmitic acid 1.0 (7) Cetyl alcohol 1.5 (8) White petrolatum 1.0 (9) 4-tert-butyl-4'-methoxydibenzoylmethane 2.0 (10) octyl methoxycinnamate 5.0 (11) glyceryl monostearate 3.0 (12) polyoxyethylene sorbitan monostearate 1.0 (13) Ethyl paraben 0.2 (14) Butyl paraben 0.1 (15) Perfume Appropriate amount Water phase part (16) Carboxyvinyl polymer 0.15 (17) , 3-butylene glycol 5.0 (18) Polyethylene glycol (molecular weight 5,000,000) 0.1 (19) Potassium hydroxide 1.0 (20) Ion-exchanged water balance

(Manufacturing method) According to the first embodiment.

Example 6 W / O Cream Oil Phase Compounding Amount (1) Dimethylpolysiloxane 5.0 (2) Methylphenylpolysiloxane 5.0 (3) Dimethylpolysiloxane 5.0 (R ₁ , R ₂ are (4) Trimethylsiloxysilicic acid 1.0 (5) Polyoxyethylene-modified organopolysiloxane 3.0 (6) Distearyldimethylammonium chloride 2.0 (7) Octylmethoxycinnamate 0 (8) Appropriate amount of fragrance Aqueous phase (9) Smecton SA (synthetic clay mineral manufactured by Kunimine Industries) 3.0 (10) 1,3-butylene glycol 5.0 (11) Glycerin 5.0 (12) Polyethylene glycol (Molecular weight 5,000,000) 0.01 (13) Polyethylene glycol (Molecular weight 500,000) 1.0 (14) Sodium L-glutamate 2.0 (15) Deionized water balance

(Manufacturing method) According to Example 1.

Examples 1 to 6 and Comparative Examples 1 and 2 were evaluated by 20 beauty technicians. Table 1 shows the results
Shown in

[0041]

[Table 1]

The numbers in the table indicate the number of persons who were evaluated as ABCDE. Evaluation A; considerably excellent Evaluation D; inferior evaluation B; excellent evaluation E; considerably poor evaluation C;

[0043]

EFFECT OF THE INVENTION The skin cosmetic of the present invention is a skin cosmetic which imparts a smooth feeling to the skin and is moist and non-greasy.

Claims (1)

(57) [Claims] (1) one or more polymer silicones represented by the following general formula (1) and a molecular weight of 500,000 to 5,000,
Skin cosmetics comprising one or more of 000 polyethylene glycols. (R ₁ represents a methyl group or a partial phenyl group, R ₂ represents a methyl group or a hydroxyl group, and n represents an integer of 500 to 20,000.)