Home Display Materials Polyimide (PI) material 3,3',4,4'-Benzophenonetetracarboxylic dianhydride(BTDA) 3,3′,4,4′-Benzophenonetetracarboxylic dianhydride(BTDA) CAS: 2421-28-5 Category: Polyimide (PI) material Related products 3,5-Diaminobenzoic acid (DABA)CAS: 535-87-5 2,2′-Bis(trifluoromethyl)-4,4′- diaminodiphenyl ether (6FODA)CAS: 344-48-9 1,4-Bis(3,4-Dicarboxyphenoxy)benzene Dianhydride (HQDPA)CAS: 17828-53-4 5-(3-phenylprop-2-ynoyl)-1,3-dihydro-2-benzofuran-1,3-dioneCAS: 1329658-14-1