UV absorber UV-329

　　Alias: (2′-hydroxy-4′-benzoylphenyl)-5chloro-2H-benzotriazole

　　Product usage and precautions

　　It has strong adsorption, which is stronger than triazine ultraviolet absorber, especially for ultrafine fibers. Especially for polyester fiber, it has excellent performance, and has the characteristics of large molecular weight, low volatility, extraction resistance and easy processing.

　　The general dosage in plastics is 1% to 3%.