| 3,3',4,4'-Benzophenonetetracarboxylic dianhydride-2,2-bis[4-(4-aminophenoxy)phenyl]propane copolymer |
| 3,3',4,4'-Biphenyltetracarboxylic dianhydride-4,4'-diaminodiphenyl ether-1,9-diaminononane copolymer |
| 3,3'-Carbonylbis(imino(2-methyl-4,1-phenylen)azo)bis(-1,5-naphthalindisulfonsäure) Tetranatrium-Salz |
| 3,3'-Diphenyl-4,4'-biphenol-4,4'-benzophenone dicarboxylic acid-6-hydroxy-2-naphthoic acid copolymer |