CYCLOOLEFIN TYPE RANDOM COPOLYMER COMPOSITIONS

摘要

In accordance with the present invention, there are provided cycloolefin type random copolymer compositions excellent in heat resistance, chemical resistance, rigidity, impact resistance, etc., which comprise (A) a cycloolefin type random copolymer containing 40-85 mol% of an ethylene component and 60-15 mol% of a cycloolefin component represented by the following general formula ¢I! or ¢II! and having an intrinsic viscosity ¢?! of 0.05-10 dl/g as measured at 135.degree.C in decalin and a softening temperature (TMA) of not lower than 70.degree.C, and (B) one or more non-rigid copolymers selected from the group consisting of: (i) a cycloolefin type random copolymer containing an ethylene component, at least one other .alpha.-olefin component and a cycloolefin component and having an intrinsic viscosity ¢?! of 0.01-10 dl/g as measured at 135.degree.C in decalin and a softening temperature (TMA) of below 70.degree.C, (ii) a non-crystalline to low crystalline .alpha.-olefin type elastomeric copolymer formed from at least two .alpha.olefins having a crystallinity index as measured by X-ray diffractometry of 0-50%, (iii) an .alpha.-olefin-diene type elastomeric copolymer formed from at least two .alpha.-olefins and at least one nonconjugated diene, and (iv) an aromatic vinyl type hydrocarbon-conjugated diene copolymer or a hydrogenated product thereof, and optionally (C) an inorganic filler or organic filler: General formula <IMG> ¢I! <IMG> ¢II! wherein n and m are each 0 or a positive integer, ? is an integer of at least 3, and R1 to R10 each represents hydrogen atom, halogen atom or hydrocarbon group.