Flame-resistant, thermoplastic moulding compositions comprising A) 65.0 to 82.0 parts by wt. of at least one aromatic polycarbonate, B) 4.0 to 11.0 parts by wt. of at least one graft polymer of B.1) 5 to 95 parts by wt. of a mixture of B.1.1) 50 to 95 parts by wt. of styrene, α-methylstyrene, styrene substituted on the nucleus by methyl, C 1 -C 8 -alkyl methacrylate, in particular methyl methacrylate, C 1 -C 8 -alkyl acrylate, in particular methyl acrylate, or mixtures of these compounds and B.1.2) 5 to 50 parts by wt. of acrylonitrile, methacrylonitrile, C 1 -C 8 -alkyl methacrylates, in particular methyl methacrylate, C 1 -C 8 -alkyl acrylate, in particular methyl acrylate, maleic anhydride, maleimides N-substituted by C 1 -C 4 -alkyl or phenyl or mixtures of these compounds on B.2) 5 to 95 parts by wt. of a rubber-containing graft base C) 14.0 to 24.0 parts by wt. of at least one phosphorus-containing flameproofing agent, wherein the sum of the parts by weight of components A to C adds up to 100 parts by weight and the total content of the polymer B.1) which is formed from the grafting monomers or is added in the free form and is not bonded chemically to the graft base is less than 2.0 wt.%, based on the total moulding composition. A) 65.0 to 82.0 parts by wt. of at least one aromatic polycarbonate, B) 4.0 to 11.0 parts by wt. of at least one graft polymer of B.1) 5 to 95 parts by wt. of a mixture of B.1.1) 50 to 95 parts by wt. of styrene, α-methylstyrene, styrene substituted on the nucleus by methyl, C 1 -C 8 -alkyl methacrylate, in particular methyl methacrylate, C 1 -C 8 -alkyl acrylate, in particular methyl acrylate, or mixtures of these compounds and B.1.2) 5 to 50 parts by wt. of acrylonitrile, methacrylonitrile, C 1 -C 8 -alkyl methacrylates, in particular methyl methacrylate, C 1 -C 8 -alkyl acrylate, in particular methyl acrylate, maleic anhydride, maleimides N-substituted by C 1 -C 4 -alkyl or phenyl or mixtures of these compounds on B.2) 5 to 95 parts by wt. of a rubber-containing graft base B.1) 5 to 95 parts by wt. of a mixture of B.1.1) 50 to 95 parts by wt. of styrene, α-methylstyrene, styrene substituted on the nucleus by methyl, C 1 -C 8 -alkyl methacrylate, in particular methyl methacrylate, C 1 -C 8 -alkyl acrylate, in particular methyl acrylate, or mixtures of these compounds and B.1.2) 5 to 50 parts by wt. of acrylonitrile, methacrylonitrile, C 1 -C 8 -alkyl methacrylates, in particular methyl methacrylate, C 1 -C 8 -alkyl acrylate, in particular methyl acrylate, maleic anhydride, maleimides N-substituted by C 1 -C 4 -alkyl or phenyl or mixtures of these compounds on B.1.1) 50 to 95 parts by wt. of styrene, α-methylstyrene, styrene substituted on the nucleus by methyl, C 1 -C 8 -alkyl methacrylate, in particular methyl methacrylate, C 1 -C 8 -alkyl acrylate, in particular methyl acrylate, or mixtures of these compounds and B.1.2) 5 to 50 parts by wt. of acrylonitrile, methacrylonitrile, C 1 -C 8 -alkyl methacrylates, in particular methyl methacrylate, C 1 -C 8 -alkyl acrylate, in particular methyl acrylate, maleic anhydride, maleimides N-substituted by C 1 -C 4 -alkyl or phenyl or mixtures of these compounds on B.2) 5 to 95 parts by wt. of a rubber-containing graft base C) 14.0 to 24.0 parts by wt. of at least one phosphorus-containing flameproofing agent,