It is one of the important raw materials for high-temperature resistant resins such as polyimide,
polyetherimide, polyesterimide, polymaleimide, and polyarylamide, which are new special engineering plastics;
2. It is also the raw material for synthesizing 3,3 ', 4,4' - tetraaminodiphenyl ether, which is the main monomer for
preparing a series of aromatic heterocyclic heat-resistant polymer materials.
3. It is also used as a raw material and crosslinking agent for the synthesis of high-performance heat-resistant epoxy resins,
polyurethanes, and other polymers.
4. It is also used to replace carcinogenic benzidine in the production of azo dyes, reactive dyes, and fragrances. At present,
direct dyes of different color levels such as bright red, bright red, sand red, yellow brown, green, gray, blue, bright orange, and
black have been developed using diaminodiphenyl ether as raw material. They can be used for dyeing fabrics such as silk, wool,
cotton, and linen, and their color fastness and exhaustion rate are superior to those of benzidine dyes.
