Polyimides based on...

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C - Chemistry, Metallurgy

08

G

C08G 73/10 (2006.01) H01L 21/31 (2006.01) H01L 23/14 (2006.01) H01L 23/24 (2006.01) H01L 23/29 (2006.01) H01L 27/12 (2006.01) H05K 1/03 (2006.01)

Patent

CA 2071719

PE-0299 TITLE POLYIMIDES BASED ON 9-ARYL-9(PERFLUOROALKYL)- XANTHENE-2,3,6,7-DIANHYDRIDE OR 9,9'-BIS(PERFLUORO- ALKYL)XANTHENE-2,3,6,7-DIANHYDRIDE AND BENZIDINE DERIVATIVES ABSTRACT OF THE DISCLOSURE Polyimide compositions, films, and electronic devices using polylmides, based on 9-aryl-9(perfluoro- alkyl)xanthene-2,3,6,7-dianhydride or 9,9'-bis(per- fluoroalkyl)xanthene-2,3,6,7-dianhydride and benzidine derivatives. These polyimides offer a combination of low linear coefficient of thermal expansion, low dielectric constant, and low water absorption.

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