A thermoplastic molding composition characterized by its excellent flame
retardance, chemical resistance and thermal stability is disclosed. The
compostion that contains polycarbonate, an impact modifier and a flame
retardant corresponding to
##STR1##
in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently of one another
denote C.sub.1 -C.sub.8 -alkyl, C.sub.6 -C.sub.10 -aryl or C.sub.7
-C.sub.12 -aralkyl, n is 0 or 1, q is 0, 1, 2, 3, or 4, N is 0.1 and 30,
R.sup.5 and R.sup.6 independently denote C.sub.1 -C.sub.4 -alkyl, and Y
denotes C.sub.1 -C.sub.7 -alkylidene, C.sub.1 -C.sub.7 -alkylene, C.sub.5
-C.sub.12 -cycloalkylene, C.sub.5 -C.sub.12 -cycloalkylidene, --O--,
--S--, --SO--, SO.sub.2 or --CO--, is further characterized in that is
contains .ltoreq.0.1% fluorine, in relation to its weight.