A vulcanisable composition comprises sulphur-vulcanisable rubber, sulphur or a sulphur-donor, a zinc compound, and a sulphur-containing amine of the formula
R¹-Sn-R-NR²R³
wherein R is a divalent radical comprising a chain of at least 2 C atoms, R¹ is an organic radical, and R² and R³ are each H or an organic radical, provided that NR²R³ is not NH(C₁₋₆ alkyl), and n is an integer, or a salt thereof, provided that the amine is not 3-(methylthio)propylamine. The amine is preferably cystamine.
一种可
硫化组合物由
硫磺-可
硫化橡胶、
硫或
硫代用品、
锌化合物和含
硫胺组成,其式为
R¹-Sn-R-NR²R³
其中 R 是由至少 2 个 C 原子链组成的二价基,R¹ 是有机基,R² 和 R³ 分别是 H 或有机基,但 NR²R³ 不是 NH(C₁₋₆烷基),n 是整数,或其盐,但胺不是 3-(甲
硫基)
丙胺。胺最好是
胱胺。