Compositions and articles of manufacture containing branched polycarbonate

Disclosed herein is a composition comprising: a flame retardant comprising a sulfonate salt and three polycarbonates. The first polycarbonate has a branching level of greater than or equal to 2%, a weight average molecular weight of 20,000 g/mole to 55,000 g/mole and a peak melt viscosity of greater...

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Bibliographische Detailangaben
Hauptverfasser: Morizur Jean-Francois, Vollenberg Peter Hendrikus Theodorus
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Disclosed herein is a composition comprising: a flame retardant comprising a sulfonate salt and three polycarbonates. The first polycarbonate has a branching level of greater than or equal to 2%, a weight average molecular weight of 20,000 g/mole to 55,000 g/mole and a peak melt viscosity of greater than or equal to 25,000 poise. The second polycarbonate has a glass transition temperature greater than or equal to 170° C. The third polycarbonate has a branching level of 0 to less than 2% and a molecular weight of 17,000 to 40,000 g/mol. The composition has a heat distortion temperature greater than or equal to 145° C., ductility greater than or equal to 90% at 23° C., multi-axial impact greater than or equal to 50 Joules per meter (J/m) at 23° C., and a molded article of the composition has a UL 94 V0 rating at a thickness of 1.5 mm.