coating titanium dioxide manufacturers

When sourcing lithopone, businesses typically consult with manufacturers who provide detailed price lists. These lists outline the costs associated with different types of lithopone, such as those tailored for specific solvent resistance or heat stability requirements. Prospective buyers should expect to find a range of options, from economy grades suitable for general-purpose uses to more sophisticated varieties intended for exacting industrial applications.

...

Although barium sulfate is almost completely inert, zinc sulfide degrades upon exposure to UV light, leading to darkening of the pigment. The severity of this UV reaction is dependent on a combination of two factors; how much zinc sulfide makes up the pigments formulation, and its total accumulated UV exposure. Depending on these factors the pigment itself can vary in shade over time, ranging from pure white all the way to grey or even black. To suppress this effect, a dopant may be used, such as a small amount of cobalt salts, which would be added to the formulation. This process creates cobalt-doped zinc sulfide. The cobalt salts help to stabilize zinc sulfide so it will not have as severe a reaction to UV exposure.

...
...