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Isomer effects on polyimide propertiesPolyimide polymers which are thermally stable and processable are developed. The addition of alkyl substituents to an aromatic ring in the polymer backbone is examined along with polyimide precursor amines containing functional groups that allow for post-cure crosslinking. The synthesis of key monomers is reported, including 2,4,6-tris (m-aminobenzyl) 1,3,5-trimethyl benzene and 2,4,6-tris (p-aminobenzyl) 1,3,5-trimethyl benzene. The preparation of a key monomer, 2,5,3-triamino benzophenone, is reported.
Document ID
19760003178
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Stump, B. L.
(Virginia Commonwealth Univ. Richmond, VA, United States)
Date Acquired
September 3, 2013
Publication Date
October 1, 1975
Subject Category
Chemistry And Materials (General)
Report/Patent Number
NASA-CR-145389
Accession Number
76N10266
Funding Number(s)
CONTRACT_GRANT: NGR-47-002-041
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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