Benetex OB 2,2’-(2,5-thiophenediyl) bis [5-tert-butylbenzoxazole] 7128-64-5 Mayzo Fluorescent Whitening Agents / Obtical Brighteners Vegetable based Polyamides (PA) Polyesters Benetex ™ OB Optical Brightener, Fluorescent Whitening Agent Benetex OB is a heat resistant, solvent soluble, chemically stable fluorescent whitener that provides brighter looking colors. It is used to offset the yellowness of a polymer and to yield a whiter appearance. Optical brighteners create brilliance by absorbing UV light, modifying the wavelength of the light and then emitting the light in a fluorescent fashion. Benetex OB can also be used as a tracer in various applications and as an optical brightener in thermoplastics,Applications Thermoplastics - Benetex OB can be used to impart excellent brightness to various thermoplastics, including: polyvinyl chloride, polyethylene, polypropylene, cellulose acetate, polystyrene, linear polyester, and polyamides Advantages Brilliant, bluish white effects that compensate for yellowness. Good lightfastness Excellent resistance to heat High chemical stability Readily soluble in a wide range of organic solvents Optical Brightener, Fluorescent Whitening Agent. Heat resistant, chemically stable fluorescent whitener that provides brighter looking colors. Used to offset the yellowness of a polymer and to yield a whiter appearance. Creates brilliance by absorbing UV light, modifying the wavelength of the light and then emitting the light in a fluorescent fashion. Can be used to impart brightness to various thermoplastics, including: polyvinyl chloride, polyethylene, polypropylene, cellulose acetate, polystyrene, linear polyester, and polyamides.