| 摘要 |
PCT No. PCT/JP98/01696 Sec. 371 Date Dec. 11, 1998 Sec. 102(e) Date Dec. 11, 1998 PCT Filed Apr. 14, 1998 PCT Pub. No. WO98/46675 PCT Pub. Date Oct. 22, 1998An olefinic thermoplastic elastomer composition, which comprises a mixture comprising: (1) 100 parts by weight of an olefinic elastomer comprising ethylene and at least one alpha -olefin having 6 to 12 carbon atoms, and having an alpha -olefin copolymerization ratio of 20 to 30% by weight, a density of 0.8 to 0.9 g/cm3 and a molecular weight distribution (Mw/Mn) of less than 3.0 in terms of a ratio of weight-average molecular weight (Mw) to number-average molecular weight (Mn) calculated by gel permeation chromatography (GPC), (2) 5 to 90 parts by weight of a propylenic polymer, and (3) 5 to 250 parts by weight of an oil for rubber, the mixture being crosslinked by a radical initiator or both of a radical initiator and a crosslinking promoter.
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