UNCONJUGATED POLYENE COPOLYMER, RUBBER COMPOSITION AND USES OF THOSE

摘要

Disclosed are a nonconjugated polyene copolymer comprising a random copolymer having structural units derived from ±-olefin (A1) of 2 to 20 carbon atoms and structural units derived from nonconjyugated polyene (A2), said nonconjugated polyene copolymer having a glass transition temerature (Tg) of -25 to 20 °C and Mooney viscosity of [ML(1+4)100°C] of 5 to 190;a rubber composition comprising the nonconjugated polyene copolymer and a diene-based rubber (B); a modifier for tires comprising the copolymer; a rubber material for tires comprising the rubber composition; a tire tread obtained from the rubber material for tires; and a tire having the tire tread.