Cycloolefin type random copolymer compositions

A cycloolefin type random copolymer composition characterized by comprising

• (A) a cycloolefin type random copolymer containing an ethylene component and a cycloolefin component represented by the following general formula [I] or [II] and having an intrinsic viscosity [.eta.] 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.,
• (B) at least two 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 represented by the following general formula [I] or [II] and having an intrinsic viscosity [.eta.] 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,
• (iii) an .alpha.-olefin-diene type elastomeric copolymer formed from at least two .alpha.-olefins and at least one non-conjugated diene, and
• (iv) an aromatic vinyl type hydrocarbon-conjugated diene copolymer or a hydrogenated product thereof,
• and
• (C) an inorganic filler or organic filler, in such a proportion that the total amount of the component (B) is 1 to 100 parts by weight based on 100 parts by weight of the component (A) and the amount of the component (C) is 1 to 100 parts by weight based on 100 parts by weight of the component (A). ##STR110## wherein n and m are each 0 or a positive integer, l is an integer of at least 3, and R.sup.1 to R.sup.10 each represents hydrogen atom, halogen atom or hydrocarbon group.