| 摘要 |
<p>Provided is an ethylene-α-olefin-nonconjugated polyene copolymer having ethylene units,α-olefin units and nonconjugated polyene units, wherein the copolymer satisfies the following requirements: (A): the intrinsic viscosity [η] is 0.5 to 1.8 dl/g, (B): the content of ethylene units is 50 to 90 mol % and the content ofα-olefin units is 50 to 10 mol % where the sum total of the contents of ethylene units andα-olefin units is taken as 100 mol %, (C): the iodine value is 1 to 50, (D): the ratio of tanδtaken at 100° C. and 2 cpm to tanδtaken at 100° C. and 1000 cpm is from 1.0 to 1.7, and (E): the ratio of the Z-average molecular weight to the number average molecular weight is from 15 to 25 and the weight average molecular weight to the number average molecular weight is from 3 to 5.</p> |
