Home Display Materials Polyimide (PI) material 4,4′-Diamino-[1,1′-biphenyl]-2,2′- dicarboxylic acid 4,4′-Diamino-[1,1′-biphenyl]-2,2′- dicarboxylic acid CAS: 17557-76-5 Category: Polyimide (PI) material Related products 3,3′,5,5′-Tetramethylbenzidine (TMB)CAS: 54827-17-7 Polyimide (PI) material 4,4′-Oxydiphthalic anhydrideCAS: 1823-59-2 Polyimide (PI) material 3,5-Diaminobenzoic acid (DABA)CAS: 535-87-5 Polyimide (PI) material Nadic Anhydride (NA)CAS: 826-62-0 Polyimide (PI) material