Composition based on polyvinyl chloride, fluoropolymer and talc, useful in particular as an insulator for electric cables and process of preparation.

摘要

The composition contains at least 3 parts by weight of fluoropolymer and at least 10 parts by weight of talc, advantageously from 3 to 8 parts by weight of fluoropolymer and from 10 to 30 parts by weight of talc, per 100 parts by weight of poly(vinyl chloride)(PVC). The addition of the fluoropolymer and talc into a PVC-based mixture in the presence of a lead-based stabiliser acts as costabiliser and consequently considerably increases the resistance of the PVC to high temperature and creep when hot, while having very good resistance to cold (winding a cable at -50 DEG C without cracking).