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filingDate 2013-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2080625bddee85214068693b3c72c252
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publicationDate 2014-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber WO-2014112681-A1
titleOfInvention Highly permeable and highly selective polyimide copolymer and method for synthesizing same
abstract The present invention relates to a high-molecular weight polyimide used for a gas separation membrane and a method for synthesizing the same, and provides a polyimide containing 4,4'-(hexafluoroisopropylidene)diphthalic anhydride, 2,3,5,6-tetramethyl-1,4-phenylenediamine, and 1,3-bis[2-(4-aminophenyl)-2-propyl]-benzene. The present invention can provide a gas separation membrane having oxygen permeability and high oxygen selectivity.
priorityDate 2013-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date>
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