Silicone composition and devices incorporating same

US8257827B1 · kind B1 · utility

Assignee

• The Regents of the University of California · US

Inventors

• Frank Shi · Irvine, US
• Ralph V. Clayman · Clayton, US
• Michael K. Louie · Renton, US
• Yeong-Her Lin · Irvine, US
• Yuan-Chang Lin

Key dates

• Filing date: Jun 2, 2011
• Grant date: Sep 4, 2012
• Expiry date: Jun 2, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/256
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A silicone composition having anti-microbial properties contains well distributed silica and nanoparticles of a noble metal. Silica and nanoparticles of a noble metal are added to liquid vinyl-terminated polydimethylsiloxane. A coupling agent is then added to the mixture and heated, the coupling agent comprising trialkoxysilane having a formula R1Si(OR2)3, wherein R1 is vinyl or allyl, and R2 is an alkyl radical having from 1 to 3 carbon atoms. In one embodiment, trimethylsiloxy terminated polymethylhydrosiloxane is then added to the mixture and heated in the presence of a catalyst so as to cross-link and cure the same into a silicone elastomer. In another embodiment, in place of the trimethylsiloxy terminated polymethylhydrosiloxane, a peroxide is added to mixture and heated to form the silicone. In this later example, no catalyst is needed.