申请人:Monsanto Company
公开号:EP0104157A1
公开(公告)日:1984-03-28
Compositions of vulcanizeable diene rubber, a cross-linking agent, a vulcanization accelerator and a vulcanization system alterative are disclosed, which have improved properties of scorch delay, cure rate and reversion resistance. The alterative is a compound of the formula
where R1 and R2 are the same or different radicals selected from alkyl of 1-12 carbon atoms, phenyl, cycloalkyl of 3-8 carbon atoms and alkyaryl and aralkyl of 7-12 carbon atoms, and R3 is selected from the same as R1 and Rz, optionally substituted with one or more halogen, nitro, alkoxy, carboalkoxy, acyl, acyloxy, amido, cyano, thio or sulfonyl substituents.
本发明公开了可硫化二烯橡胶、一种交联剂、一种硫化促进剂和一种硫化体系改良剂的组合物,这些组合物具有更好的焦烧延迟、硫化速率和抗还原性能。该改良剂是一种式如下的化合物
其中 R1 和 R2 是相同或不同的基团,选自 1-12 个碳原子的烷基、苯基、3-8 个碳原子的环烷基和 7-12 个碳原子的烷芳基和芳烷基,R3 选自与 R1 和 Rz 相同的基团,任选被一个或多个卤素、硝基、烷氧基、羧基、酰基、酰氧基、氨基、氰基、硫基或磺酰基取代。