Optical brighteners function by absorbing ultraviolet radiation and remitting blue light. The remitted blue light will reduce the yellow color of a polymer. QUENT OB-1 has excellent whiteness in Polyester fibers, also widely used in ABS, PS, PET, HIPS, PA, PC, PP, EVA and hard PVC etc. QUENT OB-1 performs excellent resistance to heat, remarkable whitening effects, good light fastness and very low dosage.

QUENT OB-1 will greatly improve the whiteness by providing a more uniform white to the recycled materials. Normal fiber applications require only 200-300 ppm in new polymer, but recycled material may require as much as 3 00-450 ppm. QUENT OB-1 is very effective in improving the appearance of the polymer or fiber. Off-class or second-quality nylon polymer can also be improved in the same way.