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New Condensation polyimides containing 1,1,1-triaryl-2,2,2-trifluoroethane structuresThe invention relates to a condensation polyimide containing a 1,1,1-triaryl 2,2,2-trifluoroethane structure and other related condensation polyimides. The process for their preparation, which comprises polymerization of a cyclic dianhydride with a diamine is also covered.
Document ID
19900009984
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Alston, William B. (NASA Lewis Research Center Cleveland, OH, United States)
Gratz, Roy F. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 14, 2013
Publication Date
July 4, 1989
Subject Category
Chemistry And Materials (General)
Report/Patent Number
Patent Number: US-PATENT-4,845,167
Patent Number: NASA-CASE-LEW-14346-1
Patent Application Number: US-PATENT-APPL-SN-924470
Accession Number
90N19300
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,845,167|NASA-CASE-LEW-14346-1
Patent Application
US-PATENT-APPL-SN-924470

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