Dispersible powder and cosmetic

A dispersive, cosmetic technology, applied in the direction of cosmetics, cosmetics, cosmetic preparations, etc., can solve the problems of poor stability, high hydrophilicity, heavy use feeling, etc., and achieve good push-open, high dispersibility, and use feeling. good effect

Pending Publication Date: 2021-02-23
SHIN ETSU CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although this powder is dispersible in water, there are problems such as agglomeration and poor stability over time due to the high hydrophilicity of the surface, absorption of moisture in the air, and heavy use feeling.

Method used

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  • Dispersible powder and cosmetic
  • Dispersible powder and cosmetic
  • Dispersible powder and cosmetic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0133] 100 g of polymethylsilsesquioxane (average particle diameter: 5 μm), 2 g of Lipidure-PMB (manufactured by NOF CORPORATION., weight average molecular weight: 600,000), and 50 g of ion-exchanged water were added to the flask, and stirred for 1 hour . Then, it was dried under reduced pressure at 100° C. for 3 hours while stirring, and pulverized to obtain a white powder. The powder was well dispersed in water and hardly aggregated with time.

Embodiment 2

[0135] Add 100 g of (vinyl dimethicone / polymethicone silsesquioxane) crosslinked polymer (average particle size 5 μm), 0.4 g of Lipidure-PMB (Ph10) to the flask (manufactured by NOF CORPORATION., weight average molecular weight: 1,000,000), 5 g of polyglyceryl-10 diisostearate (HLB: 9.5), 50 g of ion-exchanged water, and stirred for 1 hour. Then, it was dried under reduced pressure at 100° C. for 3 hours while stirring, and pulverized to obtain a white powder. The powder was well dispersed in water and hardly aggregated with time.

Embodiment 3

[0137] Add 100 g of (polydimethylsiloxane / vinyl polydimethylsiloxane) crosslinked polymer (average particle diameter: 10 μm) and 0.1 g of Lipidure-HM (manufactured by NOF CORPORATION. The average molecular weight is 100,000), 1 g of polyglyceryl-6 laurate (HLB is 14.5), 10 g of ethanol, and stirred for 1 hour. Then, it was dried under reduced pressure at 100° C. for 3 hours while stirring, and pulverized to obtain a white powder. The powder was well dispersed in water and hardly aggregated with time.

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Abstract

An object of the present invention is to provide a dispersible powder having excellent dispersibility and high dispersion stability particularly in an aqueous medium. Another object is to provide a cosmetic blended with this powder, the cosmetic being capable of forming a uniform cosmetic film and having favorable spreadability upon application, stretchability, adhesiveness, and feeling on use aswell as high stability. The dispersible powder is obtained by treating powder with a surface treating agent. The surface treatment agent comprises a (meth)acrylic polymer containing a repeating unit having a phosphorylcholine group.

Description

technical field [0001] The invention relates to a dispersible powder and cosmetics containing the dispersible powder. Background technique [0002] In the past, the improvement of the dispersibility of a powder and the application at the time of blending in a composition were considered. [0003] For example, it has been studied to improve the dispersibility in aqueous medium or oil agent by surface treatment of powder. Patent Document 1 describes that silsesquioxane particles are treated with silicone to improve dispersibility in silicone oil, but does not describe dispersion in an aqueous medium. In addition, there is no description of the effect and usefulness when blended in a composition, especially a cosmetic composition. [0004] In addition, Patent Document 2 describes a method of hydrophilically treating the surface of a pigment with a silane compound having a polyoxyalkylene group. In the middle case, there is a problem that the feeling of touch when coating is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/02A61K8/81A61K8/86A61K8/58A61Q19/00A61Q1/02A61Q1/12A61Q1/10A61Q1/08A61Q1/06A61Q5/02A61Q5/12A61Q5/06A61Q17/04
CPCA61K8/0225A61K8/8147A61K8/86A61K8/585A61Q19/00A61Q1/02A61Q1/12A61Q1/10A61Q1/08A61Q1/06A61Q5/02A61Q5/12A61Q5/06A61Q17/04A61K2800/10A61K8/8152A61K2800/61A61K8/0241A61K8/891A61K8/88A61K2800/614A61K8/022A61K8/89A61K8/345A61K8/602A61K2800/596A61K2800/5422A61K8/34A61K8/375A61K8/8158A61K8/817A61K8/87A61K8/895A61Q19/001
Inventor 森谷浩幸早川知宏田中充
Owner SHIN ETSU CHEM IND CO LTD
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