Achieving optimal UV protection for materials often requires a multifaceted approach. While UV Absorber UV-360 (CAS: 103597-45-1) from Ningbo Inno Pharmchem Co., Ltd. offers exceptional UV absorption capabilities, combining it with other types of stabilizers can unlock synergistic effects, leading to significantly enhanced protection against photodegradation.

UV-360, a Diurethane Dimethacrylate, functions by absorbing UV radiation and dissipating it as heat. This mechanism effectively prevents UV energy from initiating damaging chemical reactions within the polymer matrix. However, polymers are also susceptible to degradation initiated by free radicals generated by UV light, even after the UV light itself has been absorbed or scattered. This is where other types of stabilizers play a crucial role.

The Role of Hindered Amine Light Stabilizers (HALS)

Hindered Amine Light Stabilizers (HALS) are a class of additives that do not primarily absorb UV light. Instead, they function as radical scavengers. When UV radiation causes polymer degradation, it can generate free radicals. HALS interrupt the degradation cycle by efficiently trapping these free radicals, converting them into stable, non-reactive species. This process effectively 'heals' the damage initiated by UV exposure.

The combination of UV-360 and HALS provides a powerful synergistic effect. UV-360 acts as the first line of defense by absorbing UV radiation, thus reducing the initial amount of energy that can trigger degradation. Simultaneously, HALS work to neutralize any free radicals that may still form, or are generated by other means. This dual-action approach significantly boosts the overall light stability and longevity of the material.

The Importance of Antioxidants

Oxidation is another major degradation pathway for polymers, often exacerbated by heat and UV exposure. Antioxidants are additives that protect polymers from oxidative degradation. They work by interrupting the chain reactions of oxidation, either by decomposing hydroperoxides (secondary antioxidants) or by trapping free radicals (primary antioxidants).

When UV-360 is combined with antioxidants, the material benefits from protection against both UV-induced degradation and thermal-oxidative degradation. This is particularly important for applications involving high temperatures or prolonged exposure to sunlight, where both mechanisms can be at play.

Synergistic Formulations with UV-360

Ningbo Inno Pharmchem Co., Ltd. recommends formulating with UV-360 in combination with HALS and antioxidants for the most robust protection. For example, in automotive clearcoats, a typical formulation might include a UV absorber like UV-360 to block UV light, a HALS to scavenge radicals, and an antioxidant to prevent oxidation. This comprehensive system ensures:

  • Extended gloss retention
  • Reduced chalking and cracking
  • Improved color fastness
  • Overall increased service life of the coated product

By strategically combining these stabilizers, manufacturers can achieve a level of protection that a single additive cannot provide. This approach is key to creating durable and high-performing products in demanding applications.

Ningbo Inno Pharmchem Co., Ltd. is your trusted partner for advanced chemical solutions. Explore the benefits of synergistic stabilization by incorporating UV Absorber UV-360 alongside other complementary additives in your formulations. Contact us today to discuss your specific needs and to source these essential raw materials.