Specially designed for Brighten colors or mask yellowing in plastics. (Whiter than White) 
Principle - absorb ultraviolet light and re-emit most of the absorbed energy as blue fluorescent light between 400 and 500 nm 
Improve the handing qualities of polyolefin films. These additives migrate to the surface of the polyolefin film, forming a very thin molecular layer 

Whiteness in substrates can be improved by Increasing reflection (reflectance) & Compensate the blue defect 

Properties of Optical Brightener

• Good light fastness 
• Excellent resistance to heat
• High chemical stability 
• Low volatility 
• Readily soluble in organic solvents
• Good compatibility with most substrates