METHOD OF PREPARING AGGREGATE METAL OXIDE PARTICLE DISPERSION HAVING DESIRED AGGREGATE PARTICLE DIAMETER

摘要

PROBLEM TO BE SOLVED: To provide a method for preparing an aggregate metal oxide particle dispersion having a pre-selected average aggregate particle diameter.

SOLUTION: The method includes: a step of pre-selecting a desired percent-reduction in the average aggregate particle diameter of the metal oxide particles; a step of providing a dispersion standard pertaining to the dispersion of the aggregate metal oxide particles, wherein the dispersion standard correlates (i) the solids concentration of the dispersion with (ii) the percent-reduction in the aggregate particle diameter of the aggregate metal oxide particles that occurs when the dispersion is milled in a high-shear mixer; and preparing and milling a dispersion of the aggregate metal oxide particles in a high-shear milling device at a solids concentration that is within 10% of the solids concentration determined by the standard to provide a dispersion of aggregate metal oxide particles having the desired average aggregate particle diameter. Also provided is a method for reducing the average aggregate particle diameter of aggregate metal oxide particles, and a dispersion prepared by the method.

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