Home Display Materials Polyimide (PI) material 2,2'-Dimethyl-[1,1'-biphenyl] -4,4'-Diamine (M-Tolidine) 2,2′-Dimethyl-[1,1′-biphenyl] -4,4′-Diamine (M-Tolidine) CAS: 84-67-3 Category: Polyimide (PI) material Related products 2,3,3′,4′-Tetracarboxydiphenyl oxide dianhydride (α-ODPA)CAS: 50662-95-8 Nadic Anhydride (NA)CAS: 826-62-0 Bisphenol AFCAS: 1478-61-1 2,2-bis(4-cyanatophenyl)propane (BCP)CAS: 1156-51-0