Patent ID: 8383220

Claim:
An acrylic rubber copolymer comprising: (A) 100 parts by mass of an alkyl acrylate component comprising n-butyl acrylate and at least one selected from the group consisting of methyl acrylate and ethyl acrylate, wherein the n-butyl acrylate is present in an amount from 22.2 to 81.3 parts by mass; (B) 10 to 100 parts by mass of an alkyl methacrylate component comprising at least one compound selected from the group consisting of methyl methacrylate, ethyl methacrylate, and n-butyl methacrylate, per 100 parts by mass of the alkyl acrylate (A); and (C) 0.5 to 4 parts by mass of a crosslinkable monomer component comprising at least one selected from the group consisting of glycidyl methacrylate and monobutyl butenoate, per 100 parts by mass of the alkyl acrylate (A).