UV Absorber 326 UV-326 3896-11-5

UV absorber refers to a preparation that can prevent a large amount of ultraviolet rays from passing through. UV absorbers should have the following conditions: good thermal stability, no change due to heat even during processing, and low thermal volatility; It can strongly absorb ultraviolet radiation (especially at wavelengths of 290-400nm) and has good chemical stability, without adverse reactions with the material components in the product; Good miscibility, can be evenly dispersed in the material, does not spray frost, and does not leak out; The absorbent itself has good photochemical stability, does not decompose, and does not change color; Colorless, non-toxic, and odorless; Resistant to immersion and washing; Affordable and easy to obtain. UV absorbers can be classified into the following categories based on their chemical structure: salicylates, benzophenones, benzotriazoles, substituted acrylonitrile, triazines, and others. Fabrics with added UV absorbers can achieve excellent UV blocking effects. Can reduce fading and enhance the sunlight fastness of polyester dispersed dyes. UV absorber UV-326 is one of them.