Used as a highly effective antioxidant and stabilizer in polymers, particularly in epoxy resins and polyurethanes. It prevents degradation caused by heat, light, and oxidation during processing and long-term use. Commonly applied in coatings, adhesives, and electronic encapsulants where thermal and UV stability are critical. Its branched structure provides superior radical scavenging ability, enhancing material lifespan. Also utilized in specialty plastics for automotive and electrical industries due to its high molecular weight and low volatility.