Compositions comprising A) 60 - 95 parts by weight aromatic polycarbonate and/or aromatic polyester carbonate, B) 1.0 - 15.0 parts by weight rubber-modified graft polymer, C) 1.0 - 14.5 parts by weight of at least one cyclic phosphazene according to formula wherein k is 1 or an integer from 1 to 10, preferably a number from 1 to 8, particularly preferably 1 to 5, wherein the proportion of trimers (k=1) is from 65 to 85 mol%, the proportion of tetramers (k=2) is from 10 to 20 mol%, the proportion of higher oligomeric phosphazenes (k=3, 4, 5, 6 and 7) is from 5 to 15 mol%, and the proportion of phosphazene oligomers where k ≥ 8 is from 0 to 1 mol%, based in each case on component C, and wherein R is in each case the same or different and is an amine radical; C 1 - to C 8 -alkyl, preferably methyl, ethyl, propyl or butyl, in each case optionally halogenated, preferably halogenated with fluorine; C 1 - to C 8 -alkoxy, preferably methoxy, ethoxy, propoxy or butoxy; C 5 - to C 6 -cycloalkyl in each case optionally substituted by alkyl, preferably C 1 - to C 4 -alkyl and/or halogen, preferably chlorine and/or bromine; C 6 - to C 20 -aryloxy, preferably phenoxy, naphthyloxy, in each case optionally substituted by alkyl, preferably C 1 - to C 4 -alkyl, and/or halogen, preferably chlorine, bromine, and/or hydroxyl; C 7 - to C 12 -aralkyl, preferably phenyl-C 1 -C 4 -alkyl, in each case optionally substituted by alkyl, preferably C 1 -C 4 -alkyl, and/or halogen, preferably chlorine and/or bromine; or a halogen radical, preferably chlorine, or an OH radical, D) 0 - 15.0 parts by weight rubber-free vinyl (co)polymer or polyalkylene terephthalate, E) 0 - 15.0 parts by weight additives selected from the group comprising lubricants and demoulding agents, nucleating agents, stabilizers, antistatics, dyes, pigments, fillers and reinforcing agents and also flame retardant synergists other than anti-dripping agents, F) 0.05 to 5.00 parts by weight, preferably 0.1 to 2.0 parts by weight, particularly preferably 0.1 to 1.0 parts by weight anti-dripping agent, wherein all parts by weight figures are preferably normalized such that the sum total of the parts by weight of all components A+B+C+D+E+F in the composition add up to 100. A) 60 - 95 parts by weight aromatic polycarbonate and/or aromatic polyester carbonate, B) 1.0 - 15.0 parts by weight rubber-modified graft polymer, C) 1.0 - 14.5 parts by weight of at least one cyclic phosphazene according to formula wherein k is 1 or an integer from 1 to 10, preferably a number from 1 to 8, particularly preferably 1 to 5, wherein the proportion of trimers (k=1) is from 65 to 85 mol%, the proportion of tetramers (k=2) is from 10 to 20 mol%, the proportion of higher oligomeric phosphazenes (k=3, 4, 5, 6 and 7) is from 5 to 15 mol%, and the proportion of phosphazene oligomers where k ≥ 8 is from 0 to 1 mol%, based in each case on component C, and wherein R is in each case the same or different and is an amine radical; C 1 - to C 8 -alkyl, preferably methyl, ethyl, propyl or butyl, in each case optionally halogenated, preferably halogenated with fluorine; C 1 - to C 8 -alkoxy, preferably methoxy, ethoxy, propoxy or butoxy; C 5 - to C 6 -cycloalkyl in each case optionally substituted by alkyl, preferably C 1 - to C 4 -alkyl and/or halogen, preferably chlorine and/or bromine; C 6 - to C 20 -aryloxy, preferably phenoxy, naphthyloxy, in each case optionally substituted by alkyl, preferably C 1 - to C 4 -alkyl, and/or halogen, preferably chlorine, bromine, and/or hydroxyl; C 7 - to C 12 -aralkyl, preferably phenyl-C 1 -C 4 -alkyl, in each case optionally substituted by alkyl, preferably C 1 -C 4 -alkyl, and/or halogen, preferably chlorine and/or bromine; or a halogen radical, preferably chlorine, or an OH radical, D) 0 - 15.0 parts by weight rubber-free vinyl (co)polymer or polyalkylene terephthalate, E) 0 - 15.0 parts by weight additives selected from the group comprising lubricants and demoulding agents, nucleating agents, stabilizers, antistatics, dyes, pigments, fillers and reinforcing agents and also flame retardant synergists other than anti-dripping agents, F) 0.05 to 5.00 parts by weight, preferably 0.1 to 2.0 parts by weight, particularly preferably 0.1 to 1.0 parts by weight anti-dripping agent, wherein all parts by weight figures are preferably normalized such that the sum total of the parts by weight of all components A+B+C+D+E+F in the composition add up to 100.