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Polycarbonate composition and article comprising same

  • US 10,907,040 B2
  • Filed: 10/17/2017
  • Issued: 02/02/2021
  • Est. Priority Date: 11/01/2016
  • Status: Active Grant
First Claim
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1. A polycarbonate composition comprising:

  • (a) a copolycarbonate containing an aromatic polycarbonate-based first repeating unit and an aromatic polycarbonate-based second repeating unit having at least one siloxane bond;

    (b) at least one polycarbonate selected from the group consisting of a non-branched polycarbonate containing an aromatic polycarbonate-based first repeating unit, and a branched polycarbonate containing an aromatic polycarbonate-based first repeating unit and a trivalent or tetravalent branched repeating unit which links a plurality of the first repeating units;

    (c) a flame retardant which includes at least two sulfonate-based metal salts, or at least one sulfonate-based metal salt and at least one polyorganosiloxane; and

    (d) an organophosphorus compound,wherein the first repeating units each independently include a repeating unit represented by the following Chemical Formula 1,wherein the second repeating unit includes a repeating unit represented by the following Chemical Formula 2, and a repeating unit represented by the following Chemical Formula 3, andwherein the sulfonate-based metal salt is selected from the group consisting of sodium trifluoromethyl sulfonate, sodium perfluoroethyl sulfonate, sodium perfluorobutyl sulfonate, sodium perfluoroheptyl sulfonate, sodium perfluorooctyl sulfonate, sodium trichlorobenzene sulfonate, sodium polystyrene sulfonate, potassium perfluorobutyl sulfonate, potassium perfluorohexyl sulfonate, potassium perfluorooctyl sulfonate, calcium perfluoromethane sulfonate, rubidium perfluorobutyl sulfonate, rubidium perfluorohexyl sulfonate, cesium trifluoromethyl sulfonate, cesium perfluoroethyl sulfonate, cesium perfluorohexyl sulfonate, and cesium perfluorooctyl sulfonate;

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