Cycloolefin type random copolymer compositions and uses thereof.

摘要

Compositions comprising (A) cycloolefin random copolymer containing an ethylene component, and a cycloolefin component represented by the general formula [I] or [II] and having an intrinsic viscosity of 0.05-10 dl/g as measured at 135 DEG C in decalin and a softening temperature (TMA) not lower than 70 DEG C, and (B) a cycloolefin random copolymer containing an ethylene component, and a cycloolefin component represented by the general formula [I] or [II] and having an intrinsic viscosity of 0.01-5 dl/g as measured at 135 DEG C in decalin and a softening temperature (TMA) of below 70 DEG C, the weight ratio of said (A) component / (B) component ranging from 100/0.1 to 100/10. The composition is particularly useful for molding an information recording base board.