Rubber-modified rigid silicone resins and composites produced therefrom

US5747608A · kind A · utility

Assignees

• Dow Corning Corporation · US
• Massachusetts Inst. of Technology · US

Inventors

• Dimitris Katsoulis · Midland, US
• John R. Keryk · Midland, US
• Frederick J. McGarry · Weston, US
• Randall Schmidt · Midland, US
• Ramnath Subramanian · Hankinson, US
• Harold L. Vincent · Midland, US
• Bizhong Zhu · Midland, US

Key dates

• Filing date: Dec 31, 1996
• Grant date: May 5, 1998
• Expiry date: Dec 31, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L83/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Novel rubber-modified rigid silicone resins are disclosed. The novel resins are the copolymerized reaction product of (A) an organosilicon composition selected from the group consisting (I) an organosilicone resin, (II) hydrolyzable precursors of (I), and an hydrolyzate of (II) and (B) an silicone rubber. The novel rubber-modified rigid silicone resins of the invention show remarkably high fracture toughness, K.sub.Ic, and critical strain energy release rate G.sub.Ic.