diaminodiphenylether

Diaminodiphenylether, also known as 4,4'-oxydianiline or ODA, is an organic compound with the chemical formula C12H12N2O. It is a diamine, meaning it contains two amino (-NH2) groups, attached to two phenyl rings that are linked by an ether oxygen atom. At room temperature, ODA is typically a crystalline solid, often appearing as white to light tan flakes or powder. It is sparingly soluble in water but soluble in many organic solvents like ethanol and acetone.

Diaminodiphenylether is an important monomer in the production of high-performance polymers, most notably polyimides. Polyimides derived from ODA exhibit exceptional thermal stability, excellent mechanical properties, and good electrical insulation characteristics. These properties make them suitable for applications in aerospace, electronics, and as high-temperature adhesives and coatings. ODA itself is synthesized through various chemical routes, often involving the reaction of phenol with nitrobenzene followed by reduction of the nitro groups to amino groups. Due to its role in producing advanced materials, ODA is a significant chemical intermediate.