Mainly used as a light stabilizer for synthetic materials such as polyethylene, polypropylene, polyvinyl chloride, polyurethane rubber, etc., widely used in PE, PVC, PP, PS, PC, polycarbonate, plexiglass, polypropylene fiber and vinyl acetate, etc.   And for dry phenolic and alkyd varnishes, polyurethane, acrylic, epoxy and other air drying products and automotive refit, powder coatings, rubber products, it provide a good light stability. The propsed dosage is 0.1 0.5%.