Physical and chemical properties: Fluorescent whitening agent OB is a pure fluorescent whitening agent, used for various special purposes, it does not contain fillers, appearance is light yellow powder, tasteless, melting point is 196-203 ℃, decomposition temperature is greater than 220℃, insoluble in water, soluble in various organic solvents
Usage: The fluorescent whitening agent OB can be used for whitening and brightening of thermoplastics such as polyvinyl chloride, PE, PP, PS, ABS, etc. It has excellent heat resistance and good light resistance. It is also used for the whitening of some fibers, paints, coatings, high-grade photo paper, and ink.
Usage: Fluorescent whitening agent OB is used for polymer whitening in various processing stages. The whitening agent OB is fully mixed with various plastic particles at 0.01%~0.05% of the weight of plastic, and can be molded and processed.