4′-diaminodiphenyl ether (ODA) is one of the important monomers for polyimide. Domestic production capacity is continuing to increase.

4,4′-diaminodiphenyl ether, also known as bis(4-aminophenyl) ether, referred to as oda, is an organic compound with the chemical formula c12h12n2o. it appears as a colorless crystalline powder, …