An acrylic rubber comprised of a copolymer comprising 0.1 to 20% by weight of (A) units of a butenedioic acid monoester monomer having an alicyclic structure and 50 to 99.9% by weight of (B) units of at least one kind of monomer selected from acrylic acid ester monomers and methacrylic acid ester monomers. A crosslinkable acrylic rubber composition comprising the acrylic rubber and a crosslinking agent, especially a polyamine crosslinking agent, has good process-stability and good shapability and gives a shaped article having high heat resistance and exhibiting reduced permanent set.
一种由共聚物组成的
丙烯酸橡胶,共聚物包括 0.1%至 20%(重量百分比)具有脂环结构的
丁二酸单体的(A)单元和 50%至 99.9%(重量百分比)至少一种选自
丙烯酸酯单体和
甲基丙烯酸酯单体的(B)单元。由
丙烯酸橡胶和
交联剂(尤其是
多胺交联剂)组成的可交联
丙烯酸橡胶组合物具有良好的加工稳定性和成型性,可制成具有高耐热性和减少永久变形的成型品。