Phenothiazine derivative and acrylic rubber composition

Abstract

A phenothiazine derivative represented by the general formula: (wherein R1 is a monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms or an aralkyl group having 7 to 20 carbon atoms, and R2·Ar is an aralkyl group, wherein R2 is a divalent aliphatic hydrocarbon group having 1 to 10 carbon atoms, and Ar is a monovalent aromatic hydrocarbon group having 6 to 10 carbon atoms), and a carboxyl group-containing acrylic rubber composition comprising, based on 100 parts by weight of carboxyl group-containing acrylic rubber: (A) 0.1 to 5 parts by weight of the phenothiazine derivative represented by the formula [I]; (B) 0.1 to 3 parts by weight of a crosslinking agent for carboxyl group-containing acrylic rubber; and (C) 0.1 to 5 parts by weight of a crosslinking accelerator for carboxyl group-containing acrylic rubber.

Dependencies are inferred from the claim text.