Cycloaliphatic Polyester Copolymer Articles And Methods for Making Articles Therefrom
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United States of America Patent
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Issued Date -
Jul 30, 2009
app pub date -
Jan 28, 2008
filing date -
Jan 28, 2008
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Abandoned
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Abstract
A thermoformable sheet can comprise: a cap layer comprising a combination of a bisphenol cyclohexylidene polycarbonate and a cycloaliphatic polyester copolymer, and a base layer comprising polycarbonate. A method for making an article can comprise: melting a polycarbonate in an extruder, forming a molten combination of a bisphenol cyclohexylidene polycarbonate and a cycloaliphatic polyester copolymer, and coextruding the molten combination and the polycarbonate to form a sheet.
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