Ultraviolet absorber is currently the most widely used light stabilizer

Ultraviolet absorbers are currently the most widely used light stabilizers. According to their structure, they can be divided into salicylic acid esters, benzophenones, benzotriazoles, substituted acrylonitriles, triazines, etc. The most widely used ones are benzophenones and benzotriazoles. Quenchers are mainly metal complexes, such as divalent nickel complexes, etc., which are often used in conjunction with ultraviolet absorbers to have a synergistic effect.