Stable, concentrated and dilute, oil-in-water emulsions, their processes of preparation, and formulation process employing these emulsions
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United States of America Patent
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Jan 12, 2010
Grant Date -
Nov 30, 2006
app pub date -
Jan 20, 2004
filing date -
Aug 12, 2003
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Abstract
A stable complex oil-in-water emulsion which is useful in the cosmetic, pharmaceutical or food fields. The stable complex oil-in-water emulsion is formed by the mixing of individual oil-in-water emulsions, each individual emulsion being obtained from an air/water pre-emulsion of a preferably-nonionic surfactant; a cosurfactant selected from hydrophilic compounds, preferably with at least one hydroxyl group selected from polyols; and an aqueous phase. A method of preparing a stable complex oil-in-water emulsion whereby individual oil-in-water emulsions, chosen for properties desired in the stable complex oil-in-water emulsion, are optionally diluted and mixed without exerting a shear force.
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