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    • 8. 发明公开
    • Process for the cross-linking of polymers
    • 聚合物交联过程
    • EP0004711A3
    • 1979-11-14
    • EP79300357
    • 1979-03-08
    • Vulnax International Limited
    • Ashworth, Brian ThomasBrooks, John LangshawHarper, David John
    • C08L21/00C08K05/36C08K05/50
    • C08K5/39C08K5/5398C08L21/00
    • In the cross-linking of polymers containing ethylenic unsaturation, especially natural and synthetic rubbers of the isoprene or styrene-butadiene series, S-acyl derivatives of N-substituted thiohydroxylamines, previously known to be useful as accelerators for vulcanisation by sulphur or sulphur donors, can be used themselves as sole vulcanisation agents. The preferred compounds for this purpose are the N-dithiocarbamoyl derivatives of amines, amides or imides, e.g. S-(N',N'-dimethylamino)-N,N-dimethyldithiocarbamate, S-(acetylamino) N,N-diethyldithiocarbamate or S-(phthalimido)-di-n-butyldithiocarbamate. Typical advantages of the resultant rubbers are better resistance to heat ageing and resistance to compression set when compared with sulphur cured rubbers and greater processing safety than TMTD-cured rubbers.
    • 在含有烯属不饱和基团的聚合物,特别是异戊二烯或苯乙烯 - 丁二烯系列的天然和合成橡胶的交联中,先前已知可用作硫或硫供体硫化促进剂的N-取代的硫羟基胺的S-酰基衍生物, 可以作为唯一的硫化剂使用。 用于此目的的优选化合物是胺,酰胺或酰亚胺的N-二硫代氨基甲酰基衍生物,例如。 S-(Nmin,Nmin-二甲基氨基)-N,N-二甲基二硫代氨基甲酸酯,S-(乙酰氨基)N,N-二乙基二硫代氨基甲酸酯或S-(邻苯二甲酰亚氨基) - 二正丁基二硫代氨基甲酸酯。 与硫化橡胶相比,得到的橡胶的典型优点是耐热老化性和耐压缩性,与TMTD固化橡胶相比具有更高的加工安全性。