| 摘要 |
PROBLEM TO BE SOLVED: To provide a vulcanized rubber superior in oil-resistance, and to provide a copolymer rubber composition containing nitrile groups. SOLUTION: To a rubber composition comprising 3-100 pts.wt. of a metal salt of anα,β-ethylenic unsaturated carboxylic acid (B) to 100 pts.wt. of a copolymer rubber containing nitrile groups (A) which has an iodine value of 20 or less and has a content ofα,β-ethylenic unsaturated nitrile monomer units of 40-60 wt.%, an organic peroxide vulcanizing agent of 0.2-10 pts.wt. is further incorporated to give a vulcanizable composition, which is then subjected to vulcanization. COPYRIGHT: (C)2003,JPO
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