| 摘要 |
PROBLEM TO BE SOLVED: To provide a composition obtained by imparting wear resistance, which ultrahigh molecular weight polyolefin has, on a synthetic rubber, without impairing characteristics which the synthetic rubber essentially has. SOLUTION: The polyolefin composition comprises (a) from 10 to 100 parts by weight of ultrahigh molecular weight polyolefin having limiting viscosity of from 10 to 40 dl/g measured in a decalin solvent at 135 deg.C, and (b) 100 parts by weight of at least one member of a polyolefin-base synthetic rubber.
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