Process for producing hydrogenated alpha-olefin-dicyclopentadiene copolymer, method for molding the same and optical material

摘要

Process for producing a hydrogenated alpha-olefin-dicyclopentadiene copolymer. The process includes a step of distilling of unreacted dicyclopentadiene or tetrahydrodicyclopentadiene which is a hydrogenated product of unreacted dicyclopentadiene from a mixture containing alpha-olefin-dicyclopentadiene copolymer or its hydrogenated product in the presence of a high-boiling hydrocarbon solvent having a boiling point of 195 to 300° C. and an ignition point of 260° C. or more. Method for melt molding the hydrogenated alpha-olefin-dicyclopentadiene copolymer is also proposed.