SEARCH Articles Figures Tables 3,3 ,4,4 -Benzophenone tetracarboxylic acid dianhydride 3,3 -4,4 -Benzophenonetetracarboxylic acid dianhydride Aromatic tetracarboxylic acid dianhydrides BTDA (3,3 ,4,4 -benzophenonetetracarboxylic acid dianhydride Dianhydrides Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride Naphthalene-l,4,5,8-tetracarboxylic acid dianhydride Perylene tetracarboxylic acid dianhydride Polyimides Based on Naphthalene-1,4,5,8-Tetracarboxylic Acid Dianhydride Pyromellitic acid dianhydride Pyromellitic acid dianhydride-oxydiamine Tetracarboxylic acid dianhydrides