Antioxidant masterbatches are specialized additive compounds used in plastics, rubbers, and other materials to prevent or reduce oxidation, thereby improving the material’s durability and extending its service life. Oxidation can lead to degradation, discoloration, brittleness, and loss of mechanical properties, so antioxidant masterbatches are crucial for maintaining the quality of products exposed to environmental stressors like heat, oxygen, and UV radiation.