Polymers of nonconjugated 1,4-dienes

摘要

This invention discloses homopolymers and interpolymers of nonconjugated diolefins defined by the formula: <IMAGE> where R1, R2 and R3 may be hydrogen, a lower alkyl group containing up to 4 carbon atoms or an aryl group and R4 may be a lower alkyl group containing up to 4 carbon atoms or an aryl group. It is also disclosed that these homopolymers and interpolymers can be prepared by solution polymerization employing cationic catalyst systems and also coordination catalyst systems. The polymers are either resinous or rubbery in nature.