Stabilization of oil and water emulsions using polyglycerol este

Details Stabilization of oil and water emulsions using polyglycerol este Stabilization of oil and water emulsions using polyglycerol este

1982-09-21

1984-06-12

Lovering, Richard D.

Drug, bio-affecting and body treating compositions

Live skin colorant containing

252312, 424172, 424365, B01J 1300, A01N 6102, A61K 3100, A61K 4700

Patent

active

044541139

ABSTRACT:
A process for the preparation of smooth oil and water emulsions of excellent texture and appearance comprising adding together emulsion-forming ingredients consisting essentially of oil, water, and surfactant; selecting as said surfactant a polyglycerol ester of a fatty acid having a fatty acid composition which is primarily palmitic and stearic acids, said ester having an average degree of polymerization in the range of about 2 to about 6, a hydroxyl number in the range of about 280-425, and a saponification number in the range of about 120-140; and intensively mixing said ingredients together at an elevated temperature; said mixing being carried out at a pH greater than about 7.0.
In a preferred embodiment, the pH subsequent to mixing is reduced to about 5-7.5, to produce a gelled emulsion having the texture and appearance of oil-rich emulsions, the proportions of oil and surfactant of the gelled emulsion being about 5-25% and 2.5-10%, respectively, based on the weight of gel-forming ingredients.
The present invention also relates to emulsions prepared by the processes herein and to products containing active ingredients in addition to the emulsion-forming ingredients.

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