Ignition resistant carbonate polymer blends containing low molecular weight halogenated epoxy compounds

An ignition resistant and impact resistant polymer resin consisting essentially of a polymer blend of:

• (a) from about 65 to about 98 weight percent carbonate polymer,
• (b) from about 2 to about 25 percent by weight monovinylidene aromatic copolymer, and
• (c) from 0 to about 10 percent by weight of a rubbery core/shell graft copolymer impact modifier,
• the weight percentages of components (a), (b), and (c) being based upon the weights of components (a), (b) and (c), which blend contains as ignition resistance additives:
• (d) from about 1 to about 20 percent by weight of a low molecular weight halogenated epoxy compound according to the following Formula I, ##STR6## where R is independently hydrogen or a hydrocarbyl group having from 1 to about 3 carbon atoms:
• X is independently Cl or Br;
• i is independently 1 or 2;
• L is independently a divalent hydrocarbyl group having from 1 to about 6 carbon atoms;
• n is from 0 to 20,
• (e) from 0.01 to about 2 percent by weight of a tetrafluoroethylene polymer, and
• (f) less than about 1 percent by weight antimony or bismuth additive compounds
• the weight percentages of (d), (e) and (f) based upon the weights of components (a), (b), (e), (d), (e) and (f).