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US 2002/0143072 A1Published application
Low turbidity microemulsions
AssigneeCollaborative Technologies, Inc.
InventorDuncan T. Aust
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Abstract
The present invention relates to low turbidity microemulsions which contain reduced amounts of surfactants, i.e., emulsifying agents. Methods of making such microemulsions are also disclosed. The invention also provides for pharmaceutical or cosmetic formulations based on the microemulsions described herein, containing one or more pharmacological or cosmetic agents, and methods of using such formulations.
Claims18
An oil-in-water microemulsion comprising:
- (a) an aqueous phase comprising a water-soluble material;
- (b) an oil-phase dispersed within the aqueous phase;
- and
- (c) a surfactant;
- wherein the refractive index of the hydrophobic material and the aqueous phase are matched.
2 more elements
A method for preparing an oil-in-water microemulsion, comprising the steps of:
- a) supplying a composition comprising
- i) a water-phase comprising a water-soluble material;
- ii) an oil-phase;
- and
- iii) a surfactant,
- wherein the refractive indices of that water-phase and the oil-phase are matched;
- and
- b) subjecting the composition to mechanical homogenization using high pressure/high shear processing.
5 more elements
Dependencies are inferred from the claim text.