moldable mass polycarbonate / ABS-flowing with good mechanical properties and good surface

resistant molding compositions inflammation comprising A) from 65.0 to 82.0 parts by weight of at least one aromatic polycarbonate, B) 4.0 to 11.0 parts by weight of at least one thermoplastic graft polymer B.1) 5 to 95 parts by weight of a mixture of B.1.1) 50 to 95 parts by weight of styrene, α-methylstyrene, nucleus-substituted styrene with methyl methacrylate, C1-C8 alkyl, in particular methacrylate methyl acrylate, C1-C8 alkyl, in particular methyl acrylate, or mixtures thereof and B.1.2) 5 to 50 parts by weight of acrylonitrile, methacrylonitrile, C1-C8 alkyl methacrylates alkyl, particularly methacrylate methyl acrylate, C1-C8 alkyl, in particular methyl acrylate, maleic anhydride, maleimides are substituted C1-C4 or phenyl-N or mixtures of these compounds on B.2) 5 to 95 parts by weight of a base containing graft rubber C) 14.0 to 24.0 parts by weight of at least one phospho-containing flame retardant ro, adding the total parts by weight of components A to C 100 parts by weight and the total proportion of polymer B.1) formed by the graft monomers or added freely, not chemically bound to the graft base, less than 2.0% by weight, relative to the total molding composition.