Ultraviolet absorber UV-531 is a high performance and efficient anti-aging additive, and can absorb 240-340nmUV light, has a light color, non-toxic, good compatibility and migration of small,easy processing characteristics. Its polymers have the greatest protective effect, and helps to reduce color, while delaying yellowing and block loss of physical properties. UV-531 is widely used in PE,PVC, PP,PS,and the PC, plexiglass, polypropylene fiber, ethylene vinyl acetate, dryphenolic and alkyd varnish, polyurethane, acrylic, epoxy drying products, automotive refinish paint, powder coating, polyurethane, rubber products, providing them with a good light stability.