发明名称 |
ETHYLENE-.ALPHA.-OLEFIN-NON-CONJUGATED DIENE COPOLYMER RUBBER COMPOSITION |
摘要 |
An ethylene-.alpha.-olefin-non-conjugated diene copolymer rubber composition which comprises two kinds of ethylene-.alpha.-olefin-non-conjugated diene copolymers ¢the copolymers (A) and (B)!, copolymer (A) containing ethylidenenorbornene and either dicyclopentadiene or .alpha.,.omega.-diene having 8 to 20 carbon atoms in the main chain as the non-conjugated dienes, copolymer (B) containing ethylidenenorbornene as the non-conjugated diene, the weight ratio of the copolymer (A) to the copolymer (B) being 30/70 to 70/30, wherein the copolymer (A) has a relatively low molecular weight, a specific ethylene/.alpha.olefin weight ratio and a specific non-conjugated diene content and the copolymer (B) has a relatively high molecular weight and a specific ethylene/.alpha.-olefin weight ratio. Said copolymer rubber composition, when highly foamed, shows no reduction particularly in low tensile stress, and is excellent in shape-retention during cross-linking and foaming, and in compression set and processibility.
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申请公布号 |
CA2159417(A1) |
申请公布日期 |
1996.03.30 |
申请号 |
CA19952159417 |
申请日期 |
1995.09.28 |
申请人 |
JAPAN SYNTHETIC RUBBER CO., LTD |
发明人 |
MORIKAWA, AKIHIKO;MOTONARI, MASAYUKI;SHIMAKAGE, MASASHI;OKA, KATSUMI |
分类号 |
C08L23/16;(IPC1-7):C08L19/00 |
主分类号 |
C08L23/16 |
代理机构 |
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