ACRYLIC RUBBER COMPOSITION, CROSSLINKABLE ACRYLIC RUBBER COMPOSITION, AND CROSSLINKED OBJECT OBTAINED THEREFROM

摘要

An acrylic rubber composition comprising 100 parts by weight of (a) an acrylic rubber having carboxyl groups, 0.3 to 8 parts by weight of (b) an aromatic secondary amine compound, and 0.3 to 8 parts by weight of (c) nickel dialkyldithiocarbamate. A crosslinkable acrylic rubber composition further comprising 0.1 to 10 parts by weight of a crosslinking agent in addition to the ingredients (a), (b) and (c). By crosslinking the crosslinkable acrylic rubber composition, a crosslinked article having high heat resistance and exhibiting especially a reduced variation in elongation by heat load can be obtained.