Invention Grant
- Patent Title: Composite spherical polymer particles and their production process, and cosmetics using the same
- Patent Title (中): 复合球形聚合物颗粒及其生产工艺,化妆品使用相同
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Application No.: US12586252Application Date: 2009-09-18
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Publication No.: US09205033B2Publication Date: 2015-12-08
- Inventor: Yukio Shinagawa
- Applicant: Yukio Shinagawa
- Applicant Address: JP Tokyo
- Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
- Current Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Hamre, Schumann, Mueller & Larson, P.C.
- Priority: JP2009-063292 20090316
- Main IPC: A61K8/02
- IPC: A61K8/02 ; A61K8/19 ; A61K8/27 ; A61K8/29 ; A61K8/81 ; A61Q1/12 ; B82Y5/00 ; B82Y30/00 ; C09C1/04 ; C09C1/24 ; C09C1/30 ; C09C1/36 ; C09C1/48 ; C09C3/10 ; A61Q1/10 ; A61Q17/04

Abstract:
Composite spherical polymer particles contain a nanoparticulate pigment having an average primary particle size of from 0.1 to 0.005 μm, a high molecular dispersant having adsorptive property to the nanoparticulate pigment, and a (meth)acrylic resin. The nanoparticulate pigment is enclosed in a dispersed state in the high molecular dispersant and (meth)acrylic resin. The content of the nanoparticulate pigment ranges from 5 to 70 wt % based on the composite spherical polymer particles. The composite spherical polymer particles have an average particle size of from 1 to 20 μm. A production process of the composite spherical polymer particles and cosmetics containing the composite spherical polymer particles are also disclosed.
Public/Granted literature
- US20100233105A1 Composite spherical polymer particles and their production process, and cosmetics using the same Public/Granted day:2010-09-16
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