POLYAMIC ACID, POLYIMIDE RESIN AND POLYIMIDE FILM
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United States of America Patent
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Feb 11, 2016
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Feb 11, 2015
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Disclosed is a polyamic acid, which is a polymerized product of a diamine and a dianhydride, wherein the diamine includes 9,9-bis(3-fluoro-4-aminophenyl)fluorene (FFDA), and the dianhydride includes 2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA) and 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA). Also, a polyamide resin and a polyimide film, which are imidized products of the polyamic acid, are provided.
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