Patent ID: 8691902

Claim:
A thermoplastic polycarbonate composition comprising, based on the total weight of the thermoplastic polycarbonate composition: (a) greater than 10 to less than 30 wt % of a reinforcing mineral filler, wherein the reinforcing mineral filler consists of talc; and (b) greater than 60 to less than 90 wt. % of a polymer component, comprising, based on the weight of the polymer component, 68 to 99.9 wt. % of an aromatic polycarbonate, 0.1 to 2 wt. % of a fluorinated polymer, 0.1 to 5 wt. % of a silicone oil, optionally, 0.1 to 25 wt. % of an impact modifier; and optionally, 0.1 to 5 wt. % of an additive composition comprising an antioxidant, a mold release agent, and a stabilizer; wherein a molded sample of the thermoplastic polycarbonate composition has no drips when measured in accordance with NF P 92-505 at a thickness of 1.5 mm, a smoke density index of less than 10, determined in accordance with the formula: SDI=( Ds max/100)+( VOF 4/30) wherein SDI is the smoke density index; Ds max is the maximum smoke density; and VOF4 is the average smoke density measured over the first four minutes, and is calculated in accordance with the formula: ½ Ds 0 +Ds 1 +Ds 2 +Ds 3+½ Ds 4; wherein Ds0 is the smoke density at 0 minutes, Ds1 is the smoke density at 1 minute, Ds2 is the smoke density at 2 minutes, Ds3 is the smoke density at 3 minutes, and Ds4 is the smoke density at 4 minutes; and Ds max, Ds0, Ds1, Ds2, Ds3, and Ds4 are measured in accordance with NF X 10-702 at a thickness of 3 mm, and 100% ductility in a multi-axial impact test at 23° C., measured in accordance with ISO 6603.