The coarse
inert pigment reduces burnishing by reducing the contact area.
These molybdenum compounds are extended on an
inert pigment core to lower their cost (92cents-$1.
As a result, they behave like an
inert pigment with low sacrificial protection properties.
Osborne, EB, Satava, RD, Antifinger, GJ, "Properties of Latex Films Loaded with
Inert Pigments.