| 摘要 |
PURPOSE:To prepare the titled composition having excellent oil resistance and ozone resistance, and resistant to complex deterioration, by blending an ethylene-propylene rubber to a chloroprene-acrylonitrile copolymer containing a specific amount of acrylonitrile. CONSTITUTION:The titled composition is prepared by vulcanizing a mixture composed of (A) 70-85 (pref. 80-85) parts by weight of a chloroprene-acrylonitrile copolymer containing 3-40wt% of copolymerized acrylonitrile, and (B) 15-30 (pref. 15-20) parts by weight of an ethylene-propylene rubber. |
