High internal phase emulsions
AssigneeLever Brothers Company
InventorsMichael P. Aronson, Michael F. Petko
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Abstract
An improved high-internal-phase emulsion having increased stability under conditions of long term storage at elevated temperatures and freeze-thaw conditions, methods for preparing and stabilizing said emulsions and cosmetic preparations based thereon are disclosed. The improvement comprises incorporating into said emulsion an amount sufficient to increase the stability of said emulsion of an electrolyte contained in the aqueous phase of the emulsion.
Claims43
An improved high-internal-phase emulsion of the type comprising an aqueous phase, an oil phase and an emulsifier, the improvement comprising:
- an amount sufficient to increase the stability of said emulsion of an electrolyte selected from the group consisting of potassium sulfate and magnesium sulfate contained in said aqueous phase
- thereby providing for increased stability of said emulsion.
An improved process for preparing a high-internal-phase emulsion of the type comprising an aqueous phase, an oil phase and an emulsifier and prepared by the steps comprising:
- (i) dissolving said emulsifier in oil to provide said oil phase;
- and
- (ii) homogenizing said oil phase with said aqueous phase to provide said high-internal-phase emulsion,
- the improvement comprising:
- (i) dissolving an amount sufficient to increase the stability of said emulsion of an electrolyte selected from the group consisting of potassium sulfate and magnesium sulfate contained in said aqueous phase
- thereby providing for increased stability of said emulsion.
Dependencies are inferred from the claim text.