Chemical form optical brightener Classification

optical brightener according to chemical structure can be divided into five categories:
Stilbene, and certain synthetic fibers for cotton fiber, paper, soap and other industries, with a blue fluorescence;
Coumarin type, having the basic structure coumarone for celluloid, polyvinyl chloride, etc., with a strong blue fluorescence;
Pyrazoline type, for wool, polyamide, acrylic and other fibers, a green fluorescent brightener color;
Benzo oxygen and nitrogen type, used acrylic and other fibers and polyvinyl chloride, polystyrene and other plastics, with a red fluorescence;
Phthalimide type, used for polyester, acrylic, nylon and other fibers, with a blue fluorescence.