Method of preparing a stable coating

Abstract

A process for making a stable coating comprising an inorganic, anionic pigment, an organic, anionic binder and an organic, cationic mordant comprising: a) mixing the inorganic, anionic pigment with the organic, cationic mordant; b) lowering the pH of the mixture to below about 4; and c) adding the organic, anionic binder to the mixture, thus providing a coating composition which has an approximately constant viscosity over a period of time.

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