WERKWIJZE VOOR HET STABILISEREN VAN EEN POLYMEER VAN VINYLCHLORIDE.

摘要

1328777 Stabilized PVC SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 22 March 1972 [24 March 1971] 13372/72 Heading C3P P.V.C. which is to be stabilized by the addition of a zinc carboxylate is produced by a suspension process in the presence of polyvinyl alcohol and a phospholipid. Preferred phospholipids are the phosphoglycerides, e.g. hydroxylated lecithin, lecithin and cephalin and particularly soybean lecithin. Preferably a calcium soap and an epoxidized oil are also added to the product together with α-phenylindole and polyethylene wax in the example.