Patent ID: 6146660
Filing Date: 2000-11-14
Classification: A61K,A61Q,Y10S

Abstract:
A process for preparing a composition comprising an aqueous dispersion, said aqueous dispersion comprising an aqueous phase having dispersed within it:(a) one or more uncoated pigments, and(b) lipid vesicles having an aqueous core and a membrane formed from at least one fatty acid ester, wherein said one or more uncoated pigments are in said aqueous phase and not within said aqueous core of said lipid vesicles, wherein said process comprises the steps of:mixing, at room temperature with a standard homogenizing device, an aqueous suspension of said one or more uncoated pigments with an oil-in-water dispersion of said lipid vesicles to form a dispersion mixture; andhomogenizing said dispersion mixture using a high-pressure homogenizing device.