专利名称：Rubber compositions
发明人：Yoshio Tanimoto,Kohichi Iketani申请号：US07/325534申请日：19890320公开号：US04956413A公开日：19900911
摘要：The present invention provides a rubber composition which comprises 100 partsby weight of ethylene·&agr;-olefin·non- conjugated diene copolymer rubber, 5-40 partsby weight of solid diene rubber and 4-15 parts by weight of sulfur, the butadiene contentof said solid diene rubber being 50% by weight or more, the butadiene portions of saidsolid diene rubber having 40% or more of 1,2 bonds based on all the bonds of saidportion, and the ratio of weight-average molecular weight to number-average molecularweight being 2 or less. The rubber composition is a vulcanized rubber excellent inproperties such as hardness and strength.
申请人：SUMITOMO CHEMICAL COMPANY, LIMITED
代理机构：Cushman, Darby & Cushman
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