POLYAMINE-VULCANIZABLE CARBOXYL GROUP-CONTAINING HYDROGENATED NITRILE RUBBER COMPOSITION FOR SLIDING SEAL MEMBER

摘要

SOLUTION: The polyamine-vulcanizable carboxyl group-containing hydrogenated nitrile rubber composition for a sliding seal member contains, based on 100 pts.wt. of a polyamine-vulcanizable carboxyl group-containing hydrogenated nitrile rubber, 0.1 to 5 pts.wt. of a polyamine compound as a vulcanizer, 35 to 75 pts.wt. of silica, 0.1 to 10 pts.wt. of an epoxy-based, glycidoxy-based, methacryloxy-based, amino-based, mercapto-based or isocyanate-based silane coupling agent, and an aliphatic carboxylic acid diester compound of polyalkylene glycol as a plasticizer as represented by the general formula: RCOO(CHO)COR(in which Rand Rare each independently a C-Calkyl group or alkenyl group; n is an integer of 2 to 4; and m is an integer of 2 to 30) in an amount of the plasticizer as represented by Y which is in the range of 6X-132≤Y≤31 (provided that X is an acrylonitrile content in the polyamine-vulcanizable carboxyl group-containing hydrogenated nitrile rubber and is defined as 0 in the case when 6X-132 is a minus value).SELECTED DRAWING: None