PVC MOULDING COMPOSITIONS STABILISED BY ORGANOTIN COMPOUNDS

摘要

Compositions are described which comprise (a) 20-80 % by weight of a vinyl chloride homopolymer (PVC), (b) 80-20 % by weight of at least one copolymer, from the group consisting of ABS, NBR, NAR, SAN and EVA, (c) 0.5-5 % by weight (based on (a) and (b)) of an organotin compound from the class consisting of the organotin mercaptides and/or organotin carboxylates and (d) 0.01-1.0 % by weight (based on (a) and (b)) of at least one perchlorate of a monovalent and/or divalent metal. These compositions have improved heat ageing behaviour and are particularly suitable for the production of sheeting which can be employed in the motor vehicle industry.