... efficient UV absorbent to absorb UV between270-340 nm, used in polystyrene, polyester, PC, Perspex, PE, ABS resin. Appearance: Light yellow ... minTransmittance(500nm): 98% minUV-P is high-efficient UV absorbent to absorb UV between270-340 nm, used in polystyrene, polyester, PC ... resin and cellulose resin. It almost absorbs no visible light, especially capable for colorless transparent and pale colored ...