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    • 5. 发明授权
    • Polysulphide rubbers
    • 聚硫化橡胶
    • US4067842A
    • 1978-01-10
    • US667743
    • 1976-03-17
    • Michael Braden
    • Michael Braden
    • C08L81/00C08L81/04C08K5/10
    • C08K5/36C08K3/26C08K5/17
    • A catalyst composition, suitable for the ambient temperature curing of polysulphide rubbers, comprises zinc carbonate, an organic sulphur-containing accelerator containing a disulphide linkage (e.g. a thiazole, thiuram or dithiocarbamate), and a sulphur/amine complex. The composition contains from 15 to 90% by weight, based on the weight of zinc carbonate, of the organic accelerator and the sulphur/amine complex is preferably a sulphur/dialkylamine complex, the weight ratio of sulphur to amine in the sulphur/amine complex preferably being from 20 : 1 to 5 : 1 and the sulphur/amine complex being present in the composition in an amount of from 0.2 to 8% by weight, based on the weight of zinc carbonate.
    • 适用于多硫化物橡胶的环境温度固化的催化剂组合物包含碳酸锌,含有二硫键的有机含硫促进剂(例如噻唑,秋兰姆或二硫代氨基甲酸盐)和硫/胺络合物。 该组合物含有15-90重量%,基于碳酸锌的重量计,有机促进剂和硫/胺络合物优选为硫/二烷基胺络合物,硫/胺络合物中硫与胺的重量比 优选为20:1至5:1,并且基于碳酸锌的重量,硫/胺络合物以组合物中的0.2至8重量%的量存在。