Process for manufacturing nonpolar thermoplastic materials containing inorganic particulates

摘要

Processes are disclosed for treating an inorganic particulate to provide improved dispersibility in a nonpolar thermoplastic, for example, titanium dioxide as an opacifier or colorant in a polyolefin concentrate, and for producing said pigmented nonpolar thermoplastic, wherein a surface coating is applied to the particulate which comprises at least one of the polar phosphate esters containing acid and polar ether groups.