Compositions comprising A) 40 to 99 parts by wt. (in each case based on the sum of the parts by weight of components A+B+C+D) of unbranched aromatic unbranched polycarbonate and/or unbranched aromatic polyester carbonate, B) 0.5 to 20 parts by wt. (in each case based on the sum of the parts by weight of components A+B+C+D) of graft polymer, characterized in that the graft base is a silicone/acrylate composite rubber of mutually penetrating silicone rubber and polyalkyl (meth)acrylate rubber, with B.1 5 to 95 wt.% of one or more vinyl monomers on B.2 95 to 5 wt.% of one or more silicone/acrylate composite rubbers as graft base, wherein the silicone/acrylate rubber contains B.2.1 65 - 95 wt.% of silicone rubber and B.2.2 35 to 5 wt.% of polyalkyl (meth)acrylate rubber, wherein the two rubber components B.2.1 and B.2.2 mentioned are mutually penetrating in the composite rubber, so that they cannot be separated substantially from one another, C) 0.1 to 20 parts by wt. (in each case based on the sum of the parts by weight of components A+B+C+D) of talc having a d 98 value of less than 20 μm, preferably less than 15 μm, particularly preferably less than 8 μm, D) 0.4 to 20 parts by wt. (in each case based on the sum of the parts by weight of components A+B+C+D) of flameproofing agent chosen from at least one of the group consisting of mono- and oligomeric phosphoric and phosphonic acid esters, phosphonatamines and phosphazenes, E) 0 to 20 parts by wt. (based on the sum of the parts by wt. of components A+B+C+D) of one or more polymers chosen from the group consisting of rubber-free vinyl (co)polymer, polyalkylene terephthalate and graft polymers which differ from component B, F) 0.5 to 25 parts by wt. (in each case based on the sum of the parts by weight of components A+B+C+D) of additives such as flame retardant synergists, antidripping agents, lubricants and mould release agents, nucleating agents, stabilizers, antistatic agents acids, dyes and pigments, wherein all the parts by weight stated in the present application are standardized such that the sum of the parts by weight of components A+B+C+D in the composition is 100. A) 40 to 99 parts by wt. (in each case based on the sum of the parts by weight of components A+B+C+D) of unbranched aromatic unbranched polycarbonate and/or unbranched aromatic polyester carbonate, B) 0.5 to 20 parts by wt. (in each case based on the sum of the parts by weight of components A+B+C+D) of graft polymer, characterized in that the graft base is a silicone/acrylate composite rubber of mutually penetrating silicone rubber and polyalkyl (meth)acrylate rubber, with B.1 5 to 95 wt.% of one or more vinyl monomers on B.2 95 to 5 wt.% of one or more silicone/acrylate composite rubbers as graft base, wherein the silicone/acrylate rubber contains B.2.1 65 - 95 wt.% of silicone rubber and B.2.2 35 to 5 wt.% of polyalkyl (meth)acrylate rubber, wherein the two rubber components B.2.1 and B.2.2 mentioned are mutually penetrating in the composite rubber, so that they cannot be separated substantially from one another, C) 0.1 to 20 parts by wt. (in each case based on the sum of the parts by weight of components A+B+C+D) of talc having a d 98 value of less than 20 μm, preferably less than 15 μm, particularly preferably less than 8 μm, D) 0.4 to 20 parts by wt. (in each case based on the sum of the parts by weight of components A+B+C+D) of flameproofing agent chosen from at least one of the group consisting of mono- and oligomeric phosphoric and phosphonic acid esters, phosphonatamines and phosphazenes, E) 0 to 20 parts by wt. (based on the sum of the parts by wt. of components A+B+C+D) of one or more polymers chosen from the group consisting of rubber-free vinyl (co)polymer, polyalkylene terephthalate and graft polymers which differ from component B, F) 0.5 to 25 parts by wt. (in each case based on the sum of the parts by weight of components A+B+C+D) of additives such as flame retardant synergists, antidripping agents, lubricants and mould release agents, nucleating agents, stabilizers, antistatic agents acids, dyes and pigments,