Patent ID: 6362264
Filing Date: 2002-03-26
Classification: C08K

Abstract:
A composition of matter comprising:(i) food contact or medical contact polyvinyl chloride resin; and (ii) a low toxicity stabilizer suitable for use with food contact and medical applications, for providing heat stability to the polyvinyl chloride resin, wherein the stabilizer consists essentially of: (a) about 10 to about 40 parts by weight of a zinc carboxylate having the formula (RCO2)2Zn, wherein R is an aliphatic, cycloaliphatic or aromatic hydrocarbon containing from about 6 to about 22 carbon atoms; (b) about 40 to about 80 parts by weight of an alkyl ester of thiodipropionic acid having the formula S(CH2CH2CO2R1)2 wherein R1 is an alkyl having from about 6 to about 22 carbon atoms; and (c) about 5 to about 20 parts by weight of a phenolic antioxidant, the composition of matter being essentially free of calcium fatty acid salts.