CYCLOOLEFIN COPOLYMER COMPOSITION AND PRODUCTION THEREOF

摘要

A cycloolefin copolymer composition comprising a hydrocarbon elastomer component which is substantially free from any polymerizable double bond and a random cycloolefin copolymer component prepared by the copolymerization of a C2 or higher alpha -olefin with a cycloolefin in the presence of said elastomer component, wherein the content of the elastomer component is 1-50 wt. %. Another cycloolefin copolymer composition comprising a hydrocarbon elastomer component having polymerizable double bonds and a cycloolefin copolymer component prepared by the copolymerization of a C2 or higher alpha -olefin with a cycloolefin in the presence of said elastomer component, wherein the content of the elastomer component is 1-50 wt. %. These compositions are excellent in transparency and mechanical strengths and particularly in impact resistance.