Abstract: Powders suitable as electographic toner and/or carrier particles and other powders which utilize a liquid dispersant are produced by limited coalescence techniques. The dispersant is removed by mixing the suspension of coalesced droplets with a sufficient amount of an extracting liquid to cause the dispersant to diffuse out of the coalesced droplets into the extracting liquid.

Abstract: Particles having a controlled particle size distribution and morphology are made from inorganic hydrophilic materials by dispersing inorganic hydrophilic material in a dispersant to form a dispersion phase, and mixing the dispersion phase with a substantially water-immiscible suspending liquid, which is less polar than the dispersant, to form a suspension of dispersion phase droplets in the suspending liquid. The dispersion phase droplets are stabilized by a dispersion of an organic colloidal stabilizer which is added either to the suspending liquid before mixing or to the suspension of dispersion phase droplets after mixing. The organic stabilizer limits the coalescence of the dispersion phase droplets. The dispersant is removed to form solid inorganic particles having a controlled particle size distribution and morphology.