Compositions consisting of A) from 77 to 90 parts by weight (based on the sum of components A + B + C) of linear and/or branched aromatic polycarbonate and/or aromatic polyester carbonate, B) from 6 to 12 parts by weight (based on the sum of components A + B + C) of graft polymer having B.1 from 5 to 30 wt.% (in each case based on the graft polymer B) of a shell of at least one vinyl monomer and B.2 from 95 to 70 wt.% (in each case based on the graft polymer B) of one or more graft bases of silicone-acrylate composite rubber, C) from 4 to 10 parts by weight (based on the sum of components A + B + C) of phosphorus compounds according to formula (VIII) wherein R 1, R 2, R 3 and R 4, independently of one another, represent optionally halo-substituted C 1 -C 8 -alkyl, in each case optionally halo- and/or alkyl-substituted C 5 -C 6 -cycloalkyl, C 6 -C 10 -aryl or C 7 -C 12 -aralkyl, indices n independently of one another represent 0 or 1, indices q independently of one another represent 0, 1, 2, 3 or 4, N represents from 0.1 to 10, R 5 and R 6, independently of one another, represent C 1 -C 4 -alkyl, preferably methyl, or halogen, preferably chlorine and/or bromine, and Y represents a single bond, C 1 -C 7 -alkylidene, C 1 -C 7 -alkylene, C 5 -C 12 -cycloalkylene, C 5 -C 12 -cycloalkylidene, -O-, -S-, -SO-, - SO 2 - or -CO-, D) from 0.1 to 3 parts by weight (based on the sum of components A + B + C) of anti-dripping agents, and E) from 0 to 3 parts by weight (based on the sum of components A + B + C) of resin-like, thermoplastic and rubber-free vinyl (co)polymer (E.1) and/or polyalkylene terephthalate (E.2); the composition is particularly preferably free of rubber-free, thermoplastic and resin-like vinyl (co)polymer (E.1) and/or polyalkylene terephthalates (E.2), and F) from 0.1 to 20 parts by weight (based on the sum of components A + B + C) of further additives, selected from the group consisting of lubricants and mould release agents, nucleating agents, antistatics, stabilisers, dyes and pigments and fillers and reinforcing agents, and hydrated aluminium oxides (e.g. boehmite) or TiO 2, wherein the weight ratio of component B to the phosphorus content from component C is in a range of from 16 to 22 to 1, preferably from 17 to 19 to 1, and wherein the compositions are free of rubber-free polyalkyl (alkyl)acrylate. A) from 77 to 90 parts by weight (based on the sum of components A + B + C) of linear and/or branched aromatic polycarbonate and/or aromatic polyester carbonate, B) from 6 to 12 parts by weight (based on the sum of components A + B + C) of graft polymer having B.1 from 5 to 30 wt.% (in each case based on the graft polymer B) of a shell of at least one vinyl monomer and B.2 from 95 to 70 wt.% (in each case based on the graft polymer B) of one or more graft bases of silicone-acrylate composite rubber, B.1 from 5 to 30 wt.% (in each case based on the graft polymer B) of a shell of at least one vinyl monomer and B.2 from 95 to 70 wt.% (in each case based on the graft polymer B) of one or more graft bases of silicone-acrylate composite rubber, C) from 4 to 10 parts by weight (based on the sum of components A + B + C) of phosphorus compounds according to formula (VIII) wherein R 1, R 2, R 3 and R 4, independently of one another, represent optionally halo-substituted C 1 -C 8 -alkyl, in each case optionally halo- and/or alkyl-substituted C 5 -C 6 -cycloalkyl, C 6 -C 10 -aryl or C 7 -C 12 -aralkyl, indices n independently of one another represent 0 or 1, indices q independently of one another represent 0, 1, 2, 3 or 4, N represents from 0.1 to 10, R 5 and R 6, independently of one another, represent C 1 -C 4 -alkyl, preferably methyl, or halogen, preferably chlorine and/or bromine, and Y represents a single bond, C 1 -C 7 -alkylidene, C 1 -C 7 -alkylene, C 5 -C 12 -cycloalkylene, C 5 -C 12 -cycloalkylidene, -O-, -S-, -SO-, - SO 2 - or -CO-, R 1, R 2, R 3 and R 4, independently of one another, represent optionally halo-substituted C 1 -C 8 -alkyl, in each case optionally halo- and/or alkyl-substituted C 5 -C 6 -cycloalkyl, C 6 -C 10 -aryl or C 7 -C 12 -aralkyl, indices n independently of one another represent 0 or 1, indices q independently of one another represent 0, 1, 2, 3 or 4, N represents from 0.1 to 10, R 5 and R 6, independently of one another, represent C 1 -C 4 -alkyl, preferably methyl, or halogen, preferably chlorine and/or bromine, and Y represents a single bond, C 1 -C 7 -alkylidene, C 1 -C 7 -alkylene, C 5 -C 12 -cycloalkylene, C 5 -C 12 -cycloalkylidene, -O-, -S-, -SO-, - SO 2 - or -CO-, D) from 0.1 to 3 parts by weight (based on the sum of components A + B + C) of anti-dripping agents, and E) from 0 to 3 parts by weight (based on the sum of components A + B + C) of resin-like, thermoplastic and rubber-free vinyl (co)polymer (E.1) and/or polyalkylene terephthalate (E.2); the composition is particularly preferably free of rubber-free, thermoplastic and resin-like vinyl (co)polymer (E.1) and/or polyalkylene terephthalates (E.2), and F) from 0.1 to 20 parts by weight (based on the sum of components A + B + C) of further additives, selected from the group consisting of lubricants and mould release agents, nucleating agents, antistatics, stabilisers, dyes and pigments and fillers and reinforcing agents, and hydrated aluminium oxides (e.g. boehmite) or TiO 2,