POLYSILOXANE/POLYIMIDE COPOLYMERS AND BLENDS THEREOF

摘要

Disclosed herein is a polysiloxane/polyimide block copolymer having a siloxane content of 5 to 30 weight percent, based on the total weight of the block copolymer and comprising repeating units of Formula (I) wherein R^1-6 are independently at each occurrence selected from the group consisting of substituted or unsubstituted, saturated, unsaturated or aromatic monocyclic and poly cyclic groups having 5 to 30 carbon atoms, substituted or unsubstituted alkyl groups having 1 to 30 carbon atoms and substituted or unsubstituted alkenyl groups having 2 to 30 carbon atoms, V is a tetravalent linker selected from the group consisting of substituted or unsubstituted, saturated, unsaturated or aromatic monocyclic and polycyclic groups having 5 to 50 carbon atoms, substituted or unsubstituted alkyl groups having 1 to 30 carbon atoms, substituted or unsubstituted alkenyl groups having 2 to 30 carbon atoms and combinations comprising at least one of the foregoing linkers, g equals 1 to 30, and d is greater than or equal to 1. Also disclosed are blends of the disclosed block copolymers, methods of making the blends and articles comprising the block copolymer and block copolymer blends.