Patent ID: 8129455

Claim:
A flame retardant thermoplastic molding composition, comprising a thermoplastic copolymer A, a graft copolymer B, and a flame retardant component C and optionally further components P and K, where the molding composition comprises: A: from 40 to 80% by weight of a thermoplastic copolymer A, obtainable from acrylonitrile and of styrene or α-methylstyrene or of a mixture composed of styrene and α-methylstyrene; B: from 15 to 50% by weight of a graft copolymer B, which can be prepared from a graft base (B1), obtainable via the reaction of styrene and/or butadiene and/or C 2 -C 10 alkylacrylate, and eventually other copolymerizable components; and a graft shell (B2), obtainable via reaction of the graft base (B1) with a mixture of styrene and/or α-methylstyrene and acrylonitrile; C: from 15 to 32% by weight of the flame retardant component C, comprising at least three components: (C1) an expandable graphite component (C1) wherein at least 80% of (C1) does not expand on heating before achieving a temperature of 270° C., and (C2) a phosphorous flame retardant component (C2), and (C3) a perfluorinated polymer (C3); P: from 0 to 15% by weight of a styrene butadiene-copolymer P, K: from 0 to 5% by weight of further components K, and wherein K is one or more components selected from the group consisting of the dispersing agents (DA), buffer substances (BS), molecular weight regulators (MR), fillers (F), additives (D) and flame retardant compounds, wherein the entire composed thermoplastic molding composition gives exactly 100% by weight.