申请人:Monsanto Europe, S.A.
公开号:US04520154A1
公开(公告)日:1985-05-28
Additives for rubber compositions, giving vulcanizates having improved retention of optimum physical properties, are compounds containing two or more groups of the formula --S--SO.sub.2 R linked by an organic bridging group, or polymers containing two or more groups of the formula --S--SO.sub.2 R attached to an organic polymer chain, where R represents (a) a radical OM where M is a monovalent metal, the equivalent of a multivalent metal, a monovalent ion derived by the addition of a proton to a nitrogenous base, or the equivalent of a multivalent ion derived by the addition of two or more protons to a nitrogenous base, or (b) an organic radical selected from aliphatic, cycloaliphatic, aromatic and heterocyclic radicals, and radicals which are combinations of any two or more such radicals.
用于橡胶组合物的添加剂,可以使硫化物具有改善的保持最佳物理性能,这些化合物包含两个或更多的--S--SO.sub.2 R配对的有机桥接基团,或者是含有两个或更多的--S--SO.sub.2 R基团附着在有机聚合物链上的聚合物。其中,R代表(a)OM基团,其中M是一价金属,多价金属的当量,通过在含氮碱基上加入一个质子得到的一价离子,或通过在含氮碱基上加入两个或更多质子得到的多价离子的当量,或(b)从脂肪族、环脂族、芳香族和杂环基团中选择的有机基团,以及任意两个或多个这些基团的组合。