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filingDate 1979-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date>
grantDate 1981-02-17-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7acda7f60d6d5825b8199a1bd45c08f5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9673c983ffdd85f73d4e3f06ebaea05a
publicationDate 1981-02-17-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber US-4251420-A
titleOfInvention End-capped polyimide oligomers
abstract The products of the invention are end-capped polyimide oligomers prepared from a dianhydride of an aromatic tetracarboxylic acid such as 3,3'4,4'-benzophenonetetracarboxylic acid, an aromatic triamine, and a 1-(aminoaryl)-3-hydroxy-3-methyl-1-butyne. The structure of the polyimide oligomers is shown in FIG. 3.
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