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