Process for the stabilization of polyvinyl chloride and stabilizer compositions

摘要

This invention is directed to a process for stabilizing polyvinyl chloride molding mixtures which comprises admixing (a) from about 0.2 to 5 parts by weight of a sodium aluminosilicate of small particle size; (b) from about 0.05 to 1.5 parts by weight of one or more calcium salts of fatty acids; (c) from about 0.05 to 0.5 parts by weight of one or more zinc salts of fatty acids; (d) from about 0.2 to 2.0 parts by weight of partial esters of polyols and fatty acids; and (e) from about 0.1 to 10 parts by weight of thioglycolic acid esters of polyols and/or thioglycolic acid esters of monofunctional alcohols per 100 parts by weight of polyvinyl chloride or copolymer of vinyl chloride.