Polyolefins and polyester resins are ubiquitous in modern manufacturing, finding applications in everything from automotive components and packaging to textiles and construction materials. These versatile polymers, while offering excellent mechanical properties and processability, are susceptible to degradation when exposed to ultraviolet (UV) radiation. To ensure their long-term performance and appearance, the integration of effective UV protection is paramount. UV Absorber 326 (CAS 3896-11-5) stands out as a premier solution for these applications.

As a dedicated supplier and manufacturer of high-performance polymer additives, we recognize the unique demands of polyolefin and polyester resin stabilization. Our UV Absorber 326 is specifically engineered to meet these challenges.

Understanding the Vulnerability of Polyolefins and Polyesters to UV Radiation

Polyolefins (like polyethylene and polypropylene) and polyester resins can undergo photodegradation when exposed to UV light. This process can lead to:

  • Discoloration: Yellowing or fading of the material.
  • Loss of Mechanical Properties: Brittleness, cracking, and reduced tensile strength.
  • Surface Degradation: Chalking or loss of surface gloss.

These effects significantly reduce the service life and aesthetic appeal of products made from these materials, especially in outdoor or high-UV exposure environments.

Why UV Absorber 326 is the Preferred Choice:

UV Absorber 326, a benzotriazole derivative, offers a compelling combination of properties that make it exceptionally well-suited for stabilizing polyolefins and cold-cured polyesters:

  • Superior UV Absorption: It provides excellent protection by absorbing UV light in the critical wavelength range of 300-400 nm, effectively preventing photodegradation.
  • Low Volatility at High Temperatures: Polyolefin processing often involves high temperatures. UV Absorber 326’s low volatility ensures it remains in the polymer matrix during extrusion, injection molding, or film blowing, guaranteeing sustained protection.
  • High Thermal Stability: Its inherent thermal stability means it does not decompose or lose efficacy during processing, contributing to consistent product quality.
  • Minimal Interaction with Curing Agents: For polyester resins, particularly those cured with metallic salts, UV Absorber 326 is advantageous as it does not form undesirable colored complexes, preserving the clarity or intended color of the final product.
  • Good Compatibility: It exhibits good solubility and compatibility with these polymer systems, allowing for homogeneous dispersion and optimal protection.

Securing Your Supply of UV Absorber 326

When you need to buy UV Absorber 326 for your polyolefin or polyester applications, partnering with a reputable manufacturer and supplier is crucial. We pride ourselves on delivering a high-purity product with consistent performance. As a leading supplier in China, we offer competitive pricing and reliable delivery, ensuring you can source this vital additive with confidence. Investing in UV Absorber 326 is investing in the durability, appearance, and extended service life of your products.

By incorporating UV Absorber 326 into your formulations, you equip your polyolefin and polyester products with the robust UV protection they need to withstand environmental challenges, ensuring they meet and exceed customer expectations.