Patent ID: 7799855

Claim:
A thermoplastic composition, consisting essentially of: about 40 to about 80 wt. % of a polycarbonate resin; about 2 to about 15 wt. % of an impact modifier; about 10 to about 25 wt. % of a polysiloxane-polycarbonate copolymer comprising polydiorganosiloxane blocks of formula (6): wherein each R is independently a C 1-13 monovalent organic radical and D has an average value of about 40 to about 60; an anti-drip agent; and about 0.5 to about 20 wt. % of a phosphorus-containing flame retardant, each based on the total combined weight of the thermoplastic composition, exclusive of any filler; wherein a one-eighth inch (3.18 mm) (±3%) bar comprising the thermoplastic composition has a notched Izod impact strength of at least about 3.6 ft-lb/inch determined in accordance with ASTM D256 at room temperature; and wherein a sample of the thermoplastic composition having a thickness of about 2.0 mm achieves a UL94 5VB rating in the absence of a brominated and/or chlorinated flame retardant.