A vulcanizable acrylic rubber composition comprising (A) 100 weight parts of an acrylic rubber comprising units of an acrylic acid ester monomer (a) and units of a carboxyl group-containing ethylenically unsaturated monomer (b), (B) 0.05-5 weight parts of a primary polyamine vulcanizer, and (C) 0.5-5.5 weight parts of at least one aliphatic monoamine compound selected from aliphatic secondary monoamine compounds (C-1) and aliphatic tertiary monoamine compounds (C-2); wherein the sum in amount of the monomer (a) units plus the monomer (b) units in the acrylic rubber (A) is at least 80% by weight based on the total monomer units, and the ratio in amount of the monomer (a) units to the sum of the monomer (a) units plus the monomer (b) units is 90-99.9 weight %. This vulcanizable acrylic rubber composition is not liable to easily stick to a metal surface and has good scorch resistance, and gives a vulcanizate having good oil resistance and metal corrosion resistance.
一种可
硫化的
丙烯酸橡胶组合物,包括(A)100 重量份的
丙烯酸橡胶,该
丙烯酸橡胶由
丙烯酸酯单体(a)的单元和含羧基的
乙烯基不饱和单体(b)的单元组成;(B)0.05-5 重量份的
伯胺硫化剂;和(C)0.5-5.5重量份的至少一种脂肪族单胺化合物,选自脂肪族二级单胺化合物(C-1)和脂肪族三级单胺化合物(C-2);其中
丙烯酸橡胶(A)中单体(a)单元加单体(b)单元的量之和至少为单体单元总量的80%(重量百分比),单体(a)单元量与单体(a)单元加单体(b)单元量之和的比率为90-99.9重量%。这种可
硫化丙烯酸橡胶组合物不易粘附在
金属表面,具有良好的耐焦烧性,
硫化胶具有良好的耐油性和耐
金属腐蚀性。