A Plastic Brightening Agent is a chemical additive used in the plastics industry to enhance the brightness and whiteness of plastic products. It works by absorbing ultraviolet (UV) light and re-emitting it as visible blue light. The optimal dosage and formulation of a plastic brightening agent depend on factors such as the specific plastic polymer, processing conditions, and desired optical effect. They are also employed in the production of synthetic fibers, such as polyester, to enhance their optical appearance. Plastic Brightening Agent is compatible with a wide range of thermoplastic polymers, such as polyethylene (PE), polypropylene (PP), polystyrene (PS), and polyvinyl chloride (PVC).