The advancement in polymer additives is largely driven by the pursuit of more effective and efficient protection against environmental stressors like UV radiation and heat. NINGBO INNO PHARMCHEM CO.,LTD. champions this advancement with HALS 783, a sophisticated light stabilizer that harnesses the power of synergy between two high molecular weight Hindered Amine Light Stabilizers (HALS): UV-944 and UV-622. Understanding this synergy is key to appreciating the superior performance of HALS 783 in safeguarding polymers.

At its core, synergy refers to a phenomenon where the combined effect of two or more agents is greater than the sum of their individual effects. In the case of HALS 783, the combination of UV-944 and UV-622 creates a highly efficient light stabilization system. Both UV-944 and UV-622 are known for their excellent UV protection capabilities and long-term thermal stability. UV-944, with its oligomeric structure, offers good migration resistance, while UV-622, with its high molecular weight, provides low volatility and excellent resistance to extraction. When combined in HALS 783, these properties are amplified.

The mechanism of HALS involves a cyclical process of trapping free radicals generated within the polymer matrix when exposed to UV light. These free radicals would otherwise initiate chain scission and degradation reactions, leading to material failure. The HALS molecule acts as a radical scavenger, converting these harmful radicals into less reactive species. The synergy in HALS 783 means that the two components can work together more effectively, regenerating each other or providing complementary protection pathways, thereby offering a more robust and prolonged defense against photodegradation.

This enhanced protection is critical for a wide range of polymer applications, especially polyolefins like PP and PE (LDPE, LLDPE, HDPE) used in films, tapes, and thick sections. The synergistic action ensures that even under extreme UV exposure and high temperatures, these materials retain their mechanical integrity and appearance. The result is a significant extension of product lifespan and improved performance. Furthermore, the efficient stabilization provided by the blend often allows for lower overall additive loadings, contributing to cost-effectiveness without compromising protection.

NINGBO INNO PHARMCHEM CO.,LTD. leverages this synergistic power of UV-944 and UV-622 in HALS 783 to provide the polymer industry with a leading-edge solution for advanced protection. By understanding and applying such synergistic blends, we empower our clients to produce more durable, reliable, and high-performing plastic products.