申请人:Witco Chemical Corporation
公开号:US04374945A1
公开(公告)日:1983-02-22
Certain substituted thioglycolates and thiopropionates were found useful as secondary stabilizers for polymers, particularly polyvinyl chloride, when used in conjunction with metal octanoates, such as zinc octanoate, as the primary stabilizer. The specific thioglycolates and thiopropionates are those formed by thio adducts to the double bond of a monomer, such as the product of reacting isooctyl thioglycolate with glycidyl acrylate, to provide isooctyl S-2(glycidyloxycarbonyl)ethyl thioglycolate, as an example.
某些取代的巯基乙酸酯和巯基丙酸酯被发现可以作为聚合物的次要稳定剂,特别是聚氯乙烯,在与金属辛酸盐(例如辛酸锌)作为主要稳定剂一起使用时。具体的巯基乙酸酯和巯基丙酸酯是通过与单体的双键形成硫加合物而形成的,例如通过将异辛基巯基乙酸酯与环氧丙烯酸酯反应产生异辛基S-2(环氧羧酰)乙基巯基乙酸酯。