PROCESS FOR THE PRODUCTION OF HIGH-IMPACT POLYALKYLENETEREPHTHALATE MOULDING MATERIALS

摘要

1. A process for producing notch-impact-resistant moulding compositions by thermal treatment of plastics mixtures, which predominantly contain poly(alkylene terephthalate) having a viscosity number (J) in the region of 55 to 100 cm**3 /g, in solid from, characterised in that the plastics mixture comprises A) 70 to 95% by weight of poly(alkylene terephthalate) and B) 5 to 30% by weight of an elasticising acrylate graft copolymer having 1 to 6 carbon atoms in the alkyl group and in that the plastics mixture is treated at temperatures 15 to 60 degrees C below the melting point of the pure component A in an inert gas atmosphere.