Used as a high-performance antioxidant in polymers, particularly in polycarbonates and polyesters, to prevent thermal and oxidative degradation during processing and long-term use. Offers excellent stability under high-temperature conditions and helps maintain material clarity and mechanical strength. Also employed in specialty coatings and adhesives where resistance to yellowing and aging is critical. Its sterically hindered structure enhances durability in UV-exposed environments, making it suitable for optical materials and electronic encapsulants.