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 Pyromellitic Dianhydride (PMDA)CAS: 89-32-7 Polyimide (PI) material Nadic Anhydride (NA)CAS: 826-62-0 Polyimide (PI) material 2,3,3′,4′-Tetracarboxydiphenyl oxide dianhydride (α-ODPA)CAS: 50662-95-8 Polyimide (PI) material 6-(4-Hydroxyphenoxy)hexyl acrylateCAS: 161841-12-9 Polyimide (PI) material