- Product Details
Keywords
Quick Details
- ProName: 2,2'-(1,2-Ethenediyldi-4,1-phenylene)b...
- CasNo: 1533-45-5
- Molecular Formula: C28H18N2O2
- Appearance: Yellowish-green powder
- Application: Optical brighteners are added to many ...
- PackAge: 25kg craft bag
- ProductionCapacity: /
- Purity: 99%
- LimitNum: 0
Superiority
EffectofOpticalBrightenersontheWhitenessofPolymers Opticalbrightenersfunctionbyabsorbingultravioletradiationandreemittingbluelight.Theemittedbl…
Details
Effect of Optical Brighteners on the Whiteness of Polymers
Optical brighteners function by absorbing ultraviolet radiation and reemitting blue light. The emitted blue light will reduce the yellow color of a polymer. In the presence of a whitening agent, such as TiO2, the use of OB-1 will produce a brilliant white or “whiter than white” appearance.
Two primary factors affect the whiteness / yellowness of a formulation. They are the color of the base polymer and the level of brightener added. If no whitening agent, such as TiO2, is used, the level of OB-1 required will likely be lower than when a whitening agent is present. This level might be as little as 25-50 ppm. In determining the optimum concentration of brightener, the effect of any other UV-absorbing materials in the plastic should be considered. It is important that users perform
sufficient evaluations to determine the optimum level of OB-1 for their specific end uses.