Synonyms: Poly[(1,3-dioxo-2,5-isoindolinediyl)carbonyl(1,3-dioxo-5,2-isoindolinediyl)-p-phenyleneoxy-p-phenylene](8CI); 3,3',4,4'-Benzophenone tetracarboxy dianhydride-bis(4-aminophenyl) ethercopolymer, SRU; 3,3',4,4'-Benzophenonetetracarboxylic aciddianhydride-4,4'-diaminodiphenyl ether copolymer, SRU;3,3',4,4'-Benzophenonetetracarboxylic acid dianhydride-4,4'-diaminodiphenylether copolymer, polyimide SRU; 3,3',4,4'-Benzophenonetetracarboxylic aciddianhydride-bis(4-aminophenyl) ether copolymer, SRU;3,3',4,4'-Benzophenonetetracarboxylic acid-4,4'-diaminodiphenyl ethercopolymer, polyimide SRU; 3,3',4,4'-Benzophenonetetracarboxylicacid-4,4'-diaminodiphenyl ether copolymer, sru;3,3',4,4'-Benzophenonetetracarboxylic acid-p-aminophenyl ether polymer, SRU;3,3',4,4'-Benzophenonetetracarboxylic dianhydride-4,4'-diacetamidodiphenylether copolymer sru; 3,3',4,4'-Benzophenonetetracarboxylicdianhydride-4,4'-diaminodiphenyl ether copolymer, SRU;3,3',4,4'-Benzophenonetetracarboxylic dianhydride-4,4'-diaminodi