| 摘要 |
<p>A vulcanizable rubber composition comprising an unconjugated cyclopolyene copolymer (A) which comprises 93 to 70 mol% structural units derived from an α-olefin (A1) and 7 to 30 mol% structural units derived from an unconjugated cyclopolyene (A2) and has an intrinsic viscosity [θ] as measured in 135 °C decalin of 0.01 to 20 dl/g, a glass transition temperature (Tg) of 40 °C or lower, and an iodonium value of 50 to 150 and a diene rubber (B) in an (A)/(B) ratio of 60/40 to 0.1/99.9 by weight. A tire in which the tread comprises a material made from the vulcanizable rubber composition not only has excellent braking properties but is highly effective in reducing fuel consumption.</p> |
