Optical Brightener abbreviated as O.B1 with the chemical name of 2,2′-(1,2-ethenediyl) bis(4,1-phenylene) bisbenzoxazole is an excellent diphenyl ethylene bisbenzoxazole type compound. It is dissoluble in water and has stable capability. And good resistance to heat, sunlight, chlorine bleaching and migration. It has whitening effect on polyester fibers as well as polyester fiber-containing fabrics including polyester-cotton blend fabric. It can be used to whiten various kinds of plastics such as ABS, PS,HIPS, PA,PC,PP,EVA and rigid PVC. With addition of optical agent OB-1, polyamide fiber, nylon and polyester have significantly good whiteness. Mixed with this product, recycling polyester waste material, bottle material and slice flake will have a higher whiteness than before.
Application: Thoroughly dispersed in all those polymers. If any ultra violet spectrum absorption agent is used in the polymers, the optimal dosage of optical brightener OB should be adjusted.
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