Synonyms: Poly[(1,1',3,3'-tetraoxo[5,5'-biisoindoline]-2,2'-diyl)-p-phenylene](8CI); 3,3',4,4'-Biphenyl dianhydride-p-phenylenediamine copolymer, SRU;3,3',4,4'-Biphenylenetetracarboxylic dianhydride-p-phenylenediamine copolymer,polyimide SRU; 3,3',4,4'-Biphenyltetracarboxylic aciddianhydride-1,4-phenylenediamine copolymer, SRU;3,3',4,4'-Biphenyltetracarboxylic acid dianhydride-p-phenylenediaminecopolymer, polyimide SRU; 3,3',4,4'-Biphenyltetracarboxylic aciddianhydride-p-phenylenediamine copolymer, polyimide SRU;3,3',4,4'-Biphenyltetracarboxylic acid dianhydride-p-phenylenediaminecopolymer, sru; 3,3',4,4'-Biphenyltetracarboxylic acid-p-phenylenediaminecopolymer, sru; 3,3',4,4'-Biphenyltetracarboxylicdianhydride-1,4-phenylenediamine copolymer, sru;3,3',4,4'-Biphenyltetracarboxylic dianhydride-p-phenylenediamine copolymer,SRU; 3,3',4,4'-Biphenyltetracarboxylic dianhydride-p-phenylenediaminecopolymer, SRU; 3,3',4,4'-Biphenyltetracarboxylicdianhydride-p-phenylenediamine copolymer, SRU polyimide;3,3'