Optimal opacity and high brightness

Fillers or colorants which have a high light reflecting and scattering effect over the whole visible spectrum resulting in high opacity and brightness.

The most important white pigment is titanium dioxide providing highest opacity and brightness.

Zinc sulfide, also combined with barium sulfate to the so called lithopone, provides lower friction and abrasion in the processing equipment.

Calcium carbonate is typically used only as extender in titanium dioxide formulation or as cavitating agent in biaxially oriented films.

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