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Tough, Soluble, Aromatic, Thermoplastic CopolyimidesTough, soluble, aromatic, thermoplastic copolyimides were prepared by reacting 4,4'-oxydiphthalic anhydride, 3,4,3',4'-biphenyltetracarboxylic dianhydride and 3,4'-oxydianiline. These copolyimides were found to be soluble in common amide solvents such as N,N'-dimethyl acetamide, N-methylpyrrolidinone, and dimethylformamide allowing them to be applied as the fully imidized copolymer and to be used to prepare a wide range of articles.
Document ID
19980203089
Acquisition Source
Langley Research Center
Document Type
Other - Patent
Authors
Bryant, Robert G. (NASA Langley Research Center Hampton, VA United States)
Date Acquired
August 18, 2013
Publication Date
April 21, 1998
Subject Category
Nonmetallic Materials
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-Case-LAR-15205-1|US-Patent-5,741,883
Patent Application
US-Patent-Appl-SN-359752

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