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Silicone emulsions and personal care products comprising same

A personal care and silicone technology, applied in the field of silicone emulsion and personal care products containing it, can solve the problems of inability to benefit from moisturizing, optical soft focus and silky smoothness, and inability to obtain silicone emulsion, so as to achieve silky Slippery smoothness, enhance the effect of touch

Pending Publication Date: 2022-05-20
MOMENTIVE PERFORMANCE MATERIALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such personal care products cannot introduce silicone emulsions with traditional preservatives to benefit from the benefits of moisturizing, optical soft focus and silky smoothness brought by silicone emulsions
Although attempts have been made to use some known antiseptic and relatively safe substances in silicone emulsions, such attempts have not been successful. The main reason is that the conditions required to stabilize the silicone emulsion and the ability of these substances to fully exert anticorrosion The conditions required for action are often conflicting, resulting in the inability to obtain silicone emulsions that have both long-term storage stability and meet the anti-corrosion requirements of raw materials for personal care products

Method used

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  • Silicone emulsions and personal care products comprising same
  • Silicone emulsions and personal care products comprising same
  • Silicone emulsions and personal care products comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0147] First, 40 parts by weight of vinyl-containing dimethyl polysiloxane (M Vi D. 560 D. Vi 36 m Vi ), 10 parts by weight of dihydrogen dimethyl silicone oil (M H D. 20 m H ), and 18 parts by weight of a mixture of 13-16 isoparaffins are thoroughly mixed, and then the oil mixture is added under stirring to a premix containing the following to obtain a stable emulsion: 0.3 parts by weight of anisic acid, 0.4 parts by weight of peroxy Lauramide, 3 parts by weight of polyoxyethylene (6) lauryl ether, 4 parts by weight of polyoxyethylene (21) stearyl ether and 6 parts by weight of deionized water. Subsequently, deionized water was added so that the non-volatile content was 40% by weight. Then, the temperature was adjusted to 80° C. to complete the radical polymerization within 3 hours. Finally add 0.2 parts by weight of xanthan gum and mix well. The pH of the emulsion thus prepared was 2.8, and the amount of SiH remaining in the emulsion was determined by the fermentati...

Embodiment 2

[0149] First, 30 parts by weight of polymethylsilsesquioxane with a particle diameter of 10 μm, 10 parts by weight of simethicone oil with a viscosity of about 0.02 Pa·s at 25° C., and 15 parts by weight of isohexadecane were thoroughly mixed. This oil mixture was then added with stirring to a premix containing the following to obtain a stable emulsion: 0.2 parts by weight citric acid, 0.4 parts by weight caprylyl glycol, 3 parts by weight polyoxyethylene (6) lauryl ether, 4 parts by weight Parts of polyoxyethylene (21) stearyl ether and 6 parts by weight of deionized water. The particle size of the emulsion is 2-10 μm. Subsequently, deionized water was added so that the non-volatile content was 50% by weight. The emulsion thus prepared had a pH of 3.5 and a cyclic siloxane content (D4, D5, D6) of less than 1000 ppm as determined by gas chromatography (GC). The final emulsion passed the aging test at 50°C for 1.5 months, showing excellent stability.

Embodiment 3

[0151] First, 22 parts by weight of aminopropylaminoethyl polysiloxane (amino group content: 0.16 mmol / g) with a viscosity of about 4 Pa·s at 25°C, 8 parts by weight of polyoxyethylene (5) lauryl ether , 6 parts by weight of polyoxyethylene (12) tridecyl ether and 5 parts by weight of glycerin were thoroughly mixed, and then 0.5 parts by weight of ethylhexylglycerin and 1 part by weight of 1,2-hexanediol were added to obtain an oil mixture. 0.2 parts by weight of 36.5% concentrated hydrochloric acid was added to 12 parts by weight of deionized water, and then the acidic water was slowly added to the oil mixture to obtain a transparent high-viscosity liquid. Subsequently, 45.3 parts by weight of deionized water were added and mixed well to obtain a stable microemulsion with a non-volatile content of 40% by weight. The pH value of the emulsion thus prepared was 4.5, and the final emulsion passed the aging test at 50° C. for 1.5 months, indicating that it had excellent stability....

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Abstract

The present invention relates to a silicone emulsion and a personal care product comprising the same, the silicone emulsion passing the anti-corrosion challenge test without the preservative listed in the appendage V of European Union Cosmetic Regulation 1223 / 2009 using the following new anti-corrosion route: i) the pH of the emulsion is 5 or less; and / or ii) the emulsion comprises at least one alcohol compound having two or more hydroxyl groups.

Description

technical field [0001] The present invention relates to silicone emulsions and personal care products comprising the same, which pass the preservative challenge test using a novel preservative route without the preservatives listed in Schedule V of the EU Cosmetic Regulation 1223 / 2009. Background technique [0002] Silicone emulsions are widely used in personal care products including skin care, color cosmetics and hair care to provide moisturizing, optical soft focus, silky smoothness and other effects. However, silicone emulsions are prone to the growth of microorganisms such as bacteria and molds due to containing a significant amount of water. Therefore, in order to meet the antiseptic requirements of personal care products, silicone emulsion must add a certain amount of traditional preservatives for personal care products to ensure that it still meets the raw materials of personal care products when used in personal care products after long-term storage Anti-corrosion ...

Claims

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Application Information

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IPC IPC(8): A61K8/89A61K8/58A61K8/36A61K8/34A61K8/23A61K8/06A61K8/24A61Q19/00
CPCA61K8/585A61K8/345A61K8/89A61K8/36A61K8/24A61K8/23A61K8/06A61Q19/00A61K2800/30A61K8/062A61K8/34A61Q5/00A61K2800/52
Inventor 邢志敏戴静亚B.福尔克刘滇郑志鹏
Owner MOMENTIVE PERFORMANCE MATERIALS INC