Used as a high-performance antioxidant in polymers, particularly in polycarbonates and polyesters, to enhance thermal stability during processing and extend product lifespan. It protects against degradation caused by heat and UV exposure, maintaining mechanical properties and color clarity in engineering plastics and optical materials. Commonly found in automotive components, electronic enclosures, and transparent films where long-term durability is critical. Also employed in specialty coatings and adhesives requiring resistance to aging and environmental stress.