Compositions for stabilizing polymers or copolymers of vinyl chloride comprising a mixture of (a) an organotin compound or an antimony mercaptide. and (b) a synergistic amount of a compound derived from barium and a thiocarboxylic acid of the formula HSC(R1)(R2)COOH, where R1 represents a H-atom or a methyl group and R2 represents a H-atom or a substituted or unsubstituted alkyl group having from 1 to 18 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms or a phenyl group.
Thus, the proportion and hence the cost of organotin compounds or antimony mercaptides to be used in the compositions disclosed can be considerably reduced.
用于稳定
氯乙烯聚合物或共聚物的组合物,该组合物包含以下物质的混合物:(a)
有机锡化合物或巯基
锑。和 (b) 一种由
钡和式 HSC(R1)(R2)COOH(其中 R1 代表一个 H 原子或一个甲基,R2 代表一个 H 原子或一个具有 1 至 18 个碳原子的取代或未取代的烷基、一个具有 3 至 6 个碳原子的环烷基或一个苯基)的
硫代
羧酸衍生化合物的增效量。
这样,
有机锡化合物或巯基
锑在所公开的组合物中的使用比例和成本就可以大大降低。