At present, the ideal UV absorbers/light stabilizers are mostly compound types, especially those of salicylic acid esters, benzophenones, benzotriazoles, substituted acrylonitriles, triazines and hindered amines. It can achieve a more rational effect than any single ultraviolet absorber. Application areas of UV absorbers: polymers (plastics, etc.), coatings (automobile painting, building finishing), printing inks, post-treatment of dyed/printed textiles, sunscreen cosmetics.
Since the sun's rays contain a large amount of ultraviolet light that is harmful to colored objects, the wavelength is about 290-460 nanometers. These harmful ultraviolet light through chemical redox reaction (Redox reaction), make the color molecules finally decompose and fade.
There are both physical and chemical methods to prevent harmful ultraviolet light from damaging the color. Here is a brief introduction to the chemical method, that is, the use of ultraviolet absorbers to effectively prevent the protected object, or weaken its effect on the color. destroy
