CURABLE SILICONE COPOLYMER CONTAINING CAGE STRUCTURE AND PROCESS FOR PRODUCTION THEREOF, AND CURABLE RESIN COMPOSITION COMPRISING CURABLE SILICONE COPOLYMER CONTAINING CAGE STRUCTURE AND CURED PRODUCT THEREOF

摘要

Disclosed is a copolymer having a cage structure incorporated into its main chain. Also disclosed is a curable resin composition comprising the copolymer. Specifically disclosed is a curable silicone copolymer containing a cage structure, which has a constituent unit represented by the general formula (1). Y-[Z-(O1/2-R2 2SiO1/2)a-(R1SiO3/2)n-(O1/2)b]m-Z-Y wherein R1 and R2 independently represent a vinyl group, an alkyl group, a phenyl group, a (meth)acryloyl group, an aryl group or a group having an oxirane ring; Z represents a bivalent group represented by the general formula (2) shown below; and Y represents any one of the following groups (3) to (6), wherein R3 represents a hydrogen atom, a vinyl group, an alkyl group, a phenyl group, a (meth)acryloyl group, an aryl group or a group having an oxirane ring. [(R4O)R2 2SiO1/2]a-[R1SiO3/2]n-[O1/2]-; (4) [R4O1/2]b-[R1SiO3/2]n-[O1/2-R2 2SiO1/2]-; (5) (R4O1/2)-; and (6) (R2 3SiO1/2)- wherein R4 represents a hydrogen atom, a methyl group or an ethyl group.