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Product >>Optical Brightening Agent
Optical brightening agent the main fields of application in plastics are polyvinyl chloride, polyolefins, ethylene vinyl acetate copolymers, polystyrene, polyester and polyurethane. It absorb Ultra-violet (UV) light in the range 360 - 380 nanometers (nm) and re-emit this light in the visible spectrum in the range 420 - 460 nm.

Addition levels of optical brighteners vary according to the
For transparent polymers: 5 - 20 ppm (0.0005 - 0.002 %)
For colored formulations: 20 - 100 ppm (0.002 - 0.01 %)
For white formulations: 100 - 1000 ppm (0.01 - 0.1 %)
For fiber applications: 150 - 200 ppm (0.015 - 0.02 %)

 
Codes C. I. No.
GS OB OBA 184
GS OB-1 OBA 395
GS FP OBA 378
GS KCB PBA 367
GS MDAC OBA 91
 
 
 
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