Polymer processing, a complex interplay of heat, shear, and chemical reactions, presents inherent challenges to material stability. During these stages, polymers are susceptible to oxidative degradation, which can lead to a cascade of undesirable effects, including chain scission, cross-linking, discoloration, and loss of mechanical properties. To combat these issues, a robust antioxidant system is indispensable, and Antioxidant 168 has emerged as a leading solution for many manufacturers.

Antioxidant 168, a phosphite ester, functions as a vital secondary antioxidant. Its primary mechanism involves the decomposition of hydroperoxides, transient species formed during the initial stages of oxidation. By converting these hydroperoxides into harmless alcohols, Antioxidant 168 effectively prevents the propagation of oxidative degradation chains. This action is crucial for maintaining the melt flow index (MFI) and preventing gel formation in polymers, ensuring consistent processing and high-quality end products. Its low volatility is a significant advantage, as it remains in the polymer matrix during high-temperature processing, offering continuous protection.

The benefits of incorporating Antioxidant 168 are directly observable in processing efficiency and product quality. It contributes to reduced discoloration, especially yellowing, which is a common issue in polymers like polypropylene and polycarbonate when exposed to heat. Moreover, when used in conjunction with primary antioxidants, such as hindered phenols, it provides a synergistic effect that significantly enhances overall thermal stability and extends the product's service life. This dual action—preventing processing degradation and contributing to long-term stability—makes it an invaluable additive.

The selection of appropriate antioxidants is critical for achieving desired outcomes. Antioxidant 168's compatibility with a wide range of polymers, including polyolefins, ABS, and PVC, makes it a versatile choice for diverse manufacturing needs. For companies looking to optimize their polymer processing and ensure the longevity of their products, sourcing high-quality Antioxidant 168 is a strategic imperative. NINGBO INNO PHARMCHEM CO.,LTD. is dedicated to supplying this essential additive, supporting the industry's demand for enhanced material performance.