... ,plastic, ink, paint,etc. 2)Counter of Uvitex OB(C Fluorescent whitening agent OB can be used to impart excellent brightenss to PVC ... solute slovent, and have good stability to heat resistant, have high fastness on PVC. Advantages: 1) brilliant, bluish white effects that ... . 2) Good light-fastness 3) Excellent resistant to heat 4) High chemical stability 5) Readily soluble in a wide range of ...