Used primarily as a curing agent for high-performance epoxy resins, enabling the production of materials with excellent thermal stability and mechanical strength. Commonly applied in aerospace, electronics, and composite industries where resistance to heat and chemicals is critical. Also serves as a key intermediate in the synthesis of polyimides and polyurethanes, which are essential in manufacturing durable coatings, adhesives, and insulating materials. Its reactivity and ability to form stable aromatic structures make it valuable in specialty polymers for demanding industrial environments.