Silicone rubber in the form of a finely divided powder, method for the production and the use of the same

US6838490B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION · CN

Inventors

• Xiaohong Zhang · Beijing, CN
• Jinliang Qiao · Beijing, CN
• Genshuan Wei · Beijing, CN
• Jianming Gao · Beijing, CN
• Yiqun Liu · Weihai, CN
• Shijun Zhang · Beijing, CN
• Zhihai Song · Beijing, CN
• Jiuqiang Li · Beijing, CN
• Yicai Zhu · Beijing, CN

Key dates

• Filing date: Jun 15, 2001
• Grant date: Jan 4, 2005
• Expiry date: Jun 15, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2383/04
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The present invention relates to a novel fully vulcanized powdery silicone rubber, preparation and use thereof. The fully vulcanized powdery silicone rubber is prepared from an latex of organosilicon polymer or copolymer with lower molecular weight via irradiation of high-energy rays. The gel content of the obtained fully vulcanized powdery silicone rubber is at least 60% by weight. The fully vulcanized powdery silicone rubber can be combined with various plastics and is very easy to be dispersed into plastic matrix, and can be used as toughening agent, processing aids or as additives for cosmetics, ink, paint and coatings.