Home Display Materials Polyimide (PI) material 4,4′-Diaminodiphenylmethane (MDA) 4,4′-Diaminodiphenylmethane (MDA) CAS: 101-77-9 Category: Polyimide (PI) material Related products Pyromellitic Dianhydride (PMDA)CAS: 89-32-7 Polyimide (PI) material 6,6′-Diaminodiphenylmethane-3,3′-dicarboxylic acid (MBAA)CAS: 7330-46-3 Polyimide (PI) material p-PhenylenediaMine(p-PDA)CAS: 106-50-3 Polyimide (PI) material 3,3′-Dihydroxybenzidine (HAB)CAS: 2373-98-0 Polyimide (PI) material