Home Display Materials Polyimide (PI) material 3,3',4,4'-Biphenyltetracarboxylic dianhydride (BPDA) 3,3′,4,4′-Biphenyltetracarboxylic dianhydride (BPDA) CAS: 2420-87-3 Category: Polyimide (PI) material Related products Bis(4-aminophenyl)terephthalate (BAPT)CAS: 16926-73-1 4,4′-Oxydiphthalic anhydrideCAS: 1823-59-2 5-(3-phenylprop-2-ynoyl)-1,3-dihydro-2-benzofuran-1,3-dioneCAS: 1329658-14-1 2,3,3′,4′-Tetracarboxydiphenyl oxide dianhydride (α-ODPA)CAS: 50662-95-8