Aqueous dispersons of polymer-enclosed particles, related coating compositions and coated substrates

摘要

A method for making an aqueous dispersion of polymer-enclosed particles comprising (1) providing a mixture, in an aqueous medium, of (a) particles, (b) an ethylenically unsaturated monomer, and (c) a water-dispersible polymerizable dispersant, and (2) polymerizing the ethylenically unsaturated monomer and polymerizable dispersant to form polymer-enclosed particles comprising a water-dispersible polymer, wherein the method does not include the step of subjecting the mixture to high stress shear conditions.