Patent ID: 6143824
Filing Date: 2000-11-07
Classification: C08L

Abstract:
Polymeric compositions comprising:a) at least one thermoplastic polymer selected from polystyrene, high impact polystyrene and polyphenylenether;b) at least one thermoplastic resin selected from styrene/acrylonitrile copolymers, acrylonitrile/butadiene/styrene copolymers, acrylonitrile/ethylene-propylene-diene/styrene copolymers and polycarbonate;c) a compatibilizing block polymer, with at least two blocks, obtained with a living radicalic polymerization process which comprises:i) polymerizing at least one vinylaromatic monomer, in the presence of a living radical initiating system, to a conversion of from 5 to 99%;ii) feeding acrylonitrile to the polymerization mixture obtained in i) in such a quantity as to have the molecular weight of the block copolymer lower than 1,000,000, at the end of the polymerization process;iii) optionally repeating, once or twice, step (i), or steps (i)+(ii) or (i)+(ii)+(i);iv) recovering the block polymer thus obtained.