Methods of solubilizing milling media in pigment particle dispersions

摘要

The present invention describes methods for preparing a pigment particle dispersion. Specifically, a premix composition including pigments, dispersants and a liquid carrier is milled by a solid milling agent to predetermined particle size. The solid milling agent is solubilized in the liquid carrier which eliminates the need for separating the solid milling agent from the dispersion.

主权项

1. A method for preparing an in-situ, pigment particle dispersion comprising:
providing a premix composition including one or more pigments, one or more dispersants, and a liquid carrier; milling said premix composition in the presence of a polymeric solid milling agent to a predetermined particle size; wherein said polymeric solid milling agent is non-functionalized or non-neutralized so as to render it substantially insoluble in said liquid carrier during the milling step; and then solubilizing said solid milling agent in said liquid carrier.