| 摘要 |
The invention relates to flame-retardant, impact-modified polycarbonate (PC) compositions and moulding materials which display good mechanical properties, good chemical resistance and high hydrolysis stability, and contain: A) 95.0 parts by weight of aromatic polycarbonate and/or aromatic polyester carbonate; B) 1.0 - 15.0 parts by weight of rubber-modified graft polymerisates; C) 1.0 - 9.5 parts by weight of at least one cyclic phosphazene according to formula (X), in which k stands for 1 or a whole number from 1 to 10, preferably a number from 1 to 8 and particularly from 1 to 5, in which the proportion of trimers (k=1) lies between 60 and 98 mol.-% in relation to component C, and where R is the same or different in each case and stands for an amine group, C1- to C8-alkyl that, if required, is halogenated, preferably halogenated with fluorine and is preferably methyl, ethyl, propyl or butyl, C1-to C8 alkoxy, preferably methoxy, ethoxy, propoxy or butoxy, C5-to C6-cycloalkyl which, if required, is substituted with alkyl, preferably C1-C4-alkyl and/or halogen, preferably chlorine and/or bromine, C6-to C20-aryloxy which, if required, is substituted with alkyl, preferably C1-C4-alkyl, and/or halogen, preferably chlorine, bromine and/or hydroxy, and is preferably phenoxy, naphthyloxy, C7-to C12-aralkyl which, if required, is substituted with alkyl, preferably C1-C4-alkyl and/or halogen, preferably chlorine and/or bromine, and is preferably phenyl-Ci-C/i-alkyl, or a halogen group, preferably chlorine, or an OH group; D) 0 - 15.0 parts by weight of rubber-free vinyl(co)polymerisate polyalkylene terephthalate; E) 1.0 - 25.0 parts by weight of talc with an average particle size dso between 0.1 and 4.0 μm; F) 0 - 5.0 parts by weight of additives; and G) 0.05 to 5.0 parts by weight of an anti-dripping agent; in which all the weight part indications are standardised such that the sum of the weight parts of all the components A+B+C+D+E+F+G in the composition equals 100. The application also relates to the use of the compositions for producing moulded elements, as well as to the moulded elements produced from said compositions. |
