Optical brighteners also called as fluorescent brighteners has been widely used in various paints and coatings.Optical brighteners emit visible blue-violet fluorescence by absorbing invisible ultraviolet light, and this can be complementary to the yellowish light on the surface of the paint film, which will make the white light looks like white light. In this way, the surface of the paint film is tending to be totally reflective. From people’s view, the paint looks more white and bright after adding optical brightener  and the paint  looks more eye-catching.

Optical brightener OB