THERMOPLASTIC FORMING COMPOSITION OF AROMATIC POLYCARBONATE AND GRAFT POLYMER

1. Thermoplastic moulding compositions of A. 100 parts by weight of an aromatic polycarbonate and B. 1 to 30 parts by weight of a graft polymer with a glass transition temperature of below - 20 degrees C, characterised in that the aromatic polycarbonate A consists at least partly of o,o,o',o'-tetramethyl bisphenol polycarbonate and the graft polymer B is an acrylate rubber of a) 25 to 98% by weight, based on (B), of an acrylate rubber with a glass transition temperature of below - 20 degrees C as the graft substrate and b) 2 to 75% by weight, based on (B), of at least one polymerisable ethylenically unsaturated monomer of which the homo- or copolymers formed in the absence of (1) would have a glass transition temperature of higher than 25 degrees C, as the graft monomer, and for the production of the graft polymer B the monomer (b) has been grafted on to the completely broken latex, suspended in water, of (a), in the absence of suspending agent.