Method for making rubber-modified rigid silicone resins and composites produced therefrom

摘要

Rubber-modified rigid silicone resins and method of producing are disclosed and claimed herein. These 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 hydrolyzate(s) of (II) and (B) a silicone rubber. The resulting rubber-modified rigid silicone resins of our invention show remarkably high fracture toughness, KIc and critical strain energy release rate GIc.