| abstract |
A thermoplastic composition with low smoke density, comprising, based on the total weight of the thermoplastic composition, 70 to 95% by weight of a polycarbonate copolymer comprising a first repeating unit and a second repeating unit, wherein the first repeating unit and the second repeating unit The two repeating units are different, and wherein the first repeating unit is a bisphenol carbonate unit of the formula and the second repeating unit comprises a bisphenol carbonate unit different from the first repeating bisphenol carbonate unit, a siloxane unit, an aryl Ester units, or a combination of arylate ester units and siloxane units; and based on the weight of the composition, 5 to 30 wt% of polyetherimide, wherein the article molded from the composition has passed ISO 5659- 2 Smoke density (Ds-4) value equal to or less than 300 measured on a 3 mm thick plate. |