Understanding the chemical mechanisms that protect polymers is crucial for any manufacturer aiming for durability and longevity. Tris(2,4-di-tert-butylphenyl) phosphite, commonly known as Antioxidant 168, stands out as a highly effective secondary antioxidant. Its specific chemical structure allows it to play a critical role in preventing the degradation of polymers, particularly during the high-heat processing stages.

The core function of Antioxidant 168 lies in its ability to act as a hydroperoxide decomposer. During polymer processing, exposure to heat and oxygen initiates an autoxidation process, leading to the formation of hydroperoxides. These compounds are highly unstable and can break down to generate free radicals, which then propagate a chain reaction, causing significant damage to the polymer chains. Tris(2,4-di-tert-butylphenyl) phosphite interrupts this destructive cycle by reacting with and stabilizing these hydroperoxides, effectively halting the degradation cascade.

This chemical action results in several key benefits for polymer products. Firstly, it significantly enhances the thermal stability of the material, allowing it to withstand higher processing temperatures without deteriorating. Secondly, its low volatility means it remains effective throughout the manufacturing process and in the final product, providing long-term protection. Furthermore, it exhibits a remarkable synergistic effect when paired with primary antioxidants, such as hindered phenols. This combination provides a more potent and comprehensive defense against oxidative damage than either type of antioxidant could achieve alone.

The broad compatibility of Tris(2,4-di-tert-butylphenyl) phosphite with a wide range of polymers, including polyolefins, PVC, and ABS, makes it a versatile addition to many formulations. Manufacturers rely on it to maintain the physical and mechanical properties of their products, such as flexibility, tensile strength, and impact resistance, which can otherwise be compromised by oxidation.

As a professional supplier of functional material additives, NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing high-quality Tris(2,4-di-tert-butylphenyl) phosphite. By understanding the science behind this essential chemical, manufacturers can make informed decisions to protect their polymers and ensure the superior quality and durability of their end products. Buy this vital antioxidant to safeguard your materials.