optical brightener OB-1  OBA 393

Chemical name: Distyryl bisbenzoxazole 
Formula: C28H18N2O2 
Recommended dosage: 
1000kg material added every Brightener OB-1: 
1, EVA, polypropylene, nylon, polycarbonate and the like in an amount 50 ~ 200g. 
2, the addition of polyester fiber in the 75 ~ 300g. 
Nature: 
Fluorescent Brightener OB-1 as yellow crystals, insoluble in water, odorless, stable performance, the maximum absorption wavelength spectrum 374nm, a strong fluorescence emission wavelength of 434nm. 
Technical conditions: 
Appearance: yellow powder 
Melting point: ≥ 359 ℃ 
Purity: ≥ 98.5% 
Fineness: ≥ 300 mesh 
Uses: 
1, suitable for polyester fibers, nylon fibers, polypropylene and other synthetic fibers whitening. 
2, for polypropylene plastic, rigid PVC, ABS, EVA, polystyrene, polycarbonate increase ORTHOPAEDICS. 
3, suitable for conventional polymerization of polyester and nylon added. 
4, especially in high-temperature molding plastic products whitening.