| 摘要 |
<p>A transmission belt which is inhibited from deteriorating in high-temperature atmospheres, has excellent flexibility in low-temperature atmospheres, and is less apt to wear out. The transmission belt is characterized by being constituted of a rubber composition comprising a Ziegler-Natta catalyst type ethylene/a-olefin copolymer rubber, which is an ethylene/a-olefin copolymer rubber obtained by polymerization in the presence of a Ziegler-Natta catalyst, and a metallocene type ethylene/a-olefin copolymer rubber, which is an ethylene/a-olefin copolymer rubber obtained by polymerization in the presence of a metallocene catalyst, in a ratio of from 50/50 to 90/10 by weight.</p> |
