Polymeric costabilisers for poly(vinyl chloride)

Methacrylate-based copolymers with 2-hydroxyethyl methacrylate and 2,3-epox ypropyl methacrylate, respectively, were synthesised and investigated as co stabilisers for PVC. It was found that these polymers are capable of improv ing the induction time of PVC dehydrochlorination. This costabilising effec t is dependent on the amount of functional groups which have been introduce d into the copolymer. The new costabilisers interact with most used kinds o f stabilisers and are capable of partly substituting the metal stabilisers.