In the critical field of polymer stabilization, understanding the specific properties and applications of UV absorbers is essential for product development and manufacturing success. UV Absorber UV-328, a widely recognized and effective chemical additive, offers robust protection against UV radiation, extending the service life and preserving the aesthetic qualities of various materials. As a knowledgeable manufacturer and supplier, we provide this overview for procurement managers and R&D scientists.

UV Absorber UV-328, with its CAS number 25973-55-1, is classified as a benzotriazole UV absorber. Its molecular formula is C22H29N3O, and it has a molecular weight of approximately 351.5. The product typically appears as a light-yellow powder or cylindrical particles, indicating its physical form. Key technical specifications include a purity of ≥99%, a low ash content (≤0.10%), and minimal volatile matter (≤0.50%). These purity levels are crucial for ensuring consistent performance in demanding applications. The product's melting point, usually between 79-87°C, and its high transmittance in the visible spectrum (e.g., ≥96% at 460nm) ensure minimal impact on the visual characteristics of the final product.

The primary benefit of UV Absorber UV-328 lies in its exceptional ability to absorb UV light, specifically in the range of 270-340 nm. This capability is vital for preventing photo-oxidation and degradation in polymers. Its applications are extensive, covering a wide array of materials including polyolefins (PE, PP), polyesters, styrenic polymers, polyamides, polycarbonates, and elastomers. This broad applicability makes it a versatile choice for manufacturers across different sectors. For example, in automotive coatings and industrial applications, it helps maintain gloss and prevent chalking.

For businesses considering a purchase, the advantages of using UV Absorber UV-328 are significant: improved weathering resistance, enhanced color stability, and preservation of mechanical properties. Its low thermal evaporation and high washing resistance ensure that its protective function is maintained throughout the product's lifecycle, even under challenging processing conditions. As a reputable manufacturer and supplier, we offer this product with a commitment to quality and competitive pricing. We encourage you to buy UV Absorber UV-328 from us to ensure a reliable and high-quality supply for your manufacturing needs. Contact our sales team for a quote and to discuss how this additive can optimize your product performance.