This invention provides a polymerization inhibitor and a polymerization-inhibiting method which make continuous operation of a device for producing vinyl compounds in a long period of time possible and make corrosion of the device quite small, and also, are superior in polymerization inhibition in case of transferring and storing the vinyl compound products and in other cases.
The polymerization inhibitor of this invention is the one containing a manganese dithiocarbamate or a thiuram compound as an effective component. The polymerization-inhibiting method of this invention comprises an individual or joint use of said inhibitors, or a joint use of a copper salt, another manganese salt, or quinones in addition to said inhibitors. Also, the method may comprise a joint use of a copper dithiocarbamate and a manganese salt as polymerization inhibitors, or joint use of quinones in addition to these salts.
本发明提供了一种聚合
抑制剂和一种聚合抑制方法,可使生产
乙烯基化合物的装置长期连续运行,并使装置的腐蚀程度相当小,而且在转移和储存
乙烯基化合物产品和其他情况下,聚合抑制效果更佳。
本发明的聚合
抑制剂是含有二
硫代
氨基甲酸锰或
秋兰姆化合物作为有效成分的
抑制剂。本发明的聚合抑制方法包括单独或联合使用上述
抑制剂,或除上述
抑制剂外联合使用
铜盐、另一种
锰盐或
醌类化合物。此外,该方法还可包括联合使用二
硫代
氨基甲酸铜盐和
锰盐作为聚合
抑制剂,或在这些盐之外联合使用
醌类化合物。