| 摘要 |
The present invention relates to flame-retarded, impact-modified polycarbonate compositions comprising A) 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 polyestercarbonate, B) 6 to 12 parts by weight (based on the sum of components A + B + C) of graft polymer with B.1 5% to 30% by weight (based in each case on the graft polymer B) of a shell of at least one vinyl monomer, and B.2 95% to 70% by weight (based in each case on the graft polymer B) of one or more graft bases of silicone-acrylate composite rubber, C) 4 to 10 parts by weight (based on the sum of components A + B + C) of phosphorus compounds of formula (VIII), in which R1, R2, R3 and R4 independently of one another are optionally halogen-substituted C1-C8 alkyl, in each case optionally halogen- and/or alkyl-substituted C5-C6 cycloalkyl, C6-C10 aryl or C7-C12 aralkyl, n independently at each occurrence is 0 or 1, q independently at each occurrence is 0, 1, 2, 3 or 4, N is 0.1 to 10, R5 and R6 independently of one another are C1-C4 alkyl, preferably methyl, or halogen, preferably chlorine and/or bromine, and Y is single bond, C1-C7 alkylidene, C1-C7 alkylene, C5-C12 cycloalkylene, C5-C12 cycloalkylidene, -O-, -S-, -SO-, -SO2-, or -CO-, D) 0 3 parts by weight (based on the sum of components A + B + C) of anti-drip agents, and E) 0 3 parts by weight (based on the sum of components A + B + C) of thermoplastic vinyl (co)polymer (E.1) and/or polyalkylene terephthalate (E.2) with particular preference the composition is free of thermoplastic vinyl (co)polymers (E.1) and/or polyalkylene terephthalates (E.2) - and F) 0 20 parts by weight (based on the sum of components A + B + C) of further additives, the weight ratio of components B to phosphorus content from component D being situated within a range from 16 to 22:1, preferably from 17 to 19:1, and the compositions being free from rubber-free polyalkyl (alkyl)acrylate, to the use of the polycarbonate compositions for producing mouldings, and to the mouldings themselves.
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