1,3-Isobenzofurandione, 5,5-(1-methylethylidene)bis(4,1-phenyleneoxy)bis-, polymer with 1,4-benzenediamine;3-isobenzofurandione, 5,5'-[(1-methylethylidene)bis(4,1-phenyleneoxy)bis- po 。 lymer with 1,4-benzenediamine;polyetherimide resin A
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