Specification :

OB is a high molecular weight optical brightener of the thiophenediyl benzoxazole class, suitable for the optical brightener of polymers at all stage of processing.

Optical Brightener Agent OB is highly effective in polymer substrates such as engineering plastics, e.g. PE, PC, PVC, PS, ABS, and PP, adhesive and other organic substrates

Main applications include fibers, molded articles, films and sheets. And also can be used in clear lacquers, pigmented lacquers, paints, printing ink and synthetic leather. It will produce brilliant brightness with dyestuff, which is very efficient in directions for multicolor.