Home Display Materials Polyimide (PI) material 3,3′,4,4′-Benzophenonetetracarboxylic dianhydride(BTDA) 3,3′,4,4′-Benzophenonetetracarboxylic dianhydride(BTDA) CAS: 2421-28-5 Category: Polyimide (PI) material Related products 3,3′,5,5′-Tetramethylbenzidine (TMB)CAS: 54827-17-7 Polyimide (PI) material 2,2′-Bis(4-aminophenoxyphenyl) propane (BAPP)CAS: 13080-86-9 Polyimide (PI) material 4,4′-Oxydiphthalic anhydrideCAS: 1823-59-2 Polyimide (PI) material Bis(4-aminophenyl)terephthalate (BAPT)CAS: 16926-73-1 Polyimide (PI) material