Aqueous composition containing nonionic lipid vesicles and at least one uncoated pigment dispersed in an aqueous phase, process for preparation and use thereof
AssigneeL'oreal
InventorsNadia Terren, Fabienne Bouchard, Jacques Michelet
Life of this patent
Estimating the term…
Abstract
Compositions comprising an aqueous dispersion of lipid vesicles having an aqueous core, wherein the dispersion comprises at least one uncoated pigment dispersed in the aqueous phase and wherein the lipid vesicles with an aqueous core and a lipid membrane formed from at least one fatty acid ester, these compositions being stable, of homogeneous color and containing no or virtually no lumps of pigment, and a process for dispersing a filler in an oil-in-water dispersion of lipid vesicles by means of a high-pressure homogenizer.
Claims4
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;
- and
- homogenizing said dispersion mixture using a high-pressure homogenizing device.
Dependencies are inferred from the claim text.