THERMOPLASTIC RESINOUS BLEND AND A METHOD FOR ITS PREPARATION

摘要

THERMOPLASTIC RESINOUS BLEND AND A METHOD FOR ITS PREPARATION The present invention is directed to a thermoplastic molding composition which comprises a blend of (i) about 10 to about 80% of a thermoplastic polyester resin, (ii) about 15-85% of a polycarbonate resin, (iii) about 5-30% of a graft polymer which is characterized in that its core is substantially of a conjugated diene or of a C1-C15 acrylate, said core having a glass transition temperature below about 0.degree.C and which is further characterized in that its grafted phase comprises any of acrylic or methacrylic esters of saturated aliphatic alcohols, vinyl acetate, acrylonitrile, styrene and alkyl styrene and about 0.1 to 15 parts per hundred weight of said blend of a polymer modifier which comprises at least one derivative of an olefinically unsaturated monomer carrying at least one epoxide group. The composition of the invention was found to be amenable to thermoplastic processing without pre-extrusion drying.