A flame retardant composition is provided containing (a) an aromatic
polycarbonate resin, (b) a rubber modified graft copolymer, (c) a vinyl
aromatic-unsaturated nitrile rigid copolymer, (d) a phosphate and (e) a
tetrafluoroethylene polymer. The compositions contain elevated rubber
loadings and/or utilize low molecular weight polycarbonate and/or low
molecular weight vinyl aromatic-vinyl cyanide rigid copolymer. The
composition exhibits enhanced retention of izod impact properties upon
exposure to heat and humidity. The compositions are useful for making
pellets which are stored and/or shipped in hot humid conditions, and which
are then utilized for making molded business machine housings.
