Polycarbonate molding compositions
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United States of America Patent
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May 4, 2010
Grant Date -
Jun 14, 2007
app pub date -
Dec 5, 2006
filing date -
Dec 9, 2005
priority date (Note) -
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Abstract
A thermoplastic molding composition having improved properties is disclosed. The composition comprises polycarbonate resin, a first graft polymer, a first free copolymer, a second graft polymer and a second free copolymer; the weight-average molecular weight of the first free copolymer being lower by at least 32,000 g/mol with regard to that of the second free copolymer. The inventive composition features improved balance of melt flowability and ductility, good resistance to hydrolysis and process stability.
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