ULTRAFINE HYDROUS KAOLIN PIGMENTS, METHODS OF MAKING THE PIGMENTS, AND METHODS OF USING THE PIGMENTS IN GLOSS PAINT FORMULATIONS

摘要

Disclosed are methods of processing kaolin to produce ultrafine hydrous kaolin. The methods involve processing gray crude kaolin by subjecting the kaolin crude to flotation and then centrifuging the kaolin to provide a fine stream that is subject to refinement. Also disclosed are systems for the automated processing of gray crude kaolin to produce the ultrafine hydrous kaolin and paint compositions that contain the ultrafine hydrous kaolin.