申请人:Kyodo Chemical Company, Limited
公开号:US03933733A1
公开(公告)日:1976-01-20
Halogen-containing resins, particularly polyvinyl chloride, are stabilized by the incorporation of a phosphite of the formula, ##EQU1## wherein one or two of groups R.sub.1, R.sub.2 or R.sub.3 has the formula, R(OC.sub.n H.sub.2n).sub.m --, in which R is an alkyl unsubstituted or substituted with at least one hydroxyl or chlorine, an alkenyl unsubstituted or substituted with at least one hydroxyl or chlorine, or an aralkyl, n has a value of from 1 to 4, and m has a value of from 1 to 8, and the remaining group R.sub.1, R.sub.2 and/or R.sub.3 is an alkyl unsubstituted or substituted with at least one hydroxyl or chlorine, an alkenyl unsubstituted or substituted with at least one hydroxyl or chlorine, an aralkyl or an unsubstituted aryl.
含卤素树脂,特别是聚氯乙烯,通过加入以下式子的亚磷酸酯进行稳定,其中R.sub.1、R.sub.2或R.sub.3中的一个或两个具有以下式子:R(OC.sub.n H.sub.2n).sub.m --,其中R是未取代或取代至少一个羟基或氯的烷基,未取代或取代至少一个羟基或氯的烯基,或芳基甲基,n的值为1至4,m的值为1至8,其余的R.sub.1、R.sub.2和/或R.sub.3是未取代或取代至少一个羟基或氯的烷基,未取代或取代至少一个羟基或氯的烯基,芳基甲基或未取代的芳基。