Process for the production of emulsions and dispersions
AssigneeThe Australian National University
InventorRichard M Pashley
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Abstract
Methods for the formation of colloidal suspensions. The method includes combining an aqueous substance with a second substance that is normally immiscible with the aqueous substance, to form a mixture, and before, during or after the combining removing dissolved gases from one or both of the aqueous and second substance, whereby the aqueous and second substances mix and form a colloidal suspension. The methods for the formation of colloidal suspensions include methods for the formation of emulsions as well as particulate dispersions. The methods used to form the colloidal suspensions in accordance with the present invention produce colloidal suspensions that are stable for periods from an hour to several weeks in the absence of surfactants or stabilizing agents.
Claims20
A process for the production of an oil emulsion, comprising:
- combining an aqueous liquid with
- an oil, to form a mixture,
- wherein the mixture is formed in the absence of a surfactant, and in the absence of an emulsion stabilizing polymer and in the absence of a stabilizing agent;
- and
- before, during or after said combining removing dissolved gases from the mixture, the oil, or the aqueous liquid;
- thus forming an oil emulsion, which does not comprise either a surfactant, an emulsion stabilizing polymer or a stabilizing agent;
- wherein the removing dissolved gases comprises removing at least 99 per cent of the dissolved gas present in the mixture, the oil or the aqueous liquid;
- and
- wherein said oil emulsion is formed without mechanical action.
A process for the production of an oil emulsion, comprising:
- combining an aqueous liquid with
- an oil, to form a mixture,
- wherein the mixture is formed in the absence of a surfactant, and in the absence of an emulsion stabilizing polymer and in the absence of a stabilizing agent;
- and
- before, during or after said combining removing dissolved gases from the mixture, the oil, or the aqueous liquid;
- thus forming an oil emulsion, which does not comprise either a surfactant, an emulsion stabilizing polymer or a stabilizing agent;
- wherein the removing dissolved gases comprises removing at least 99 per cent of the dissolved gas present in the mixture, the oil or the aqueous liquid;
- and
- wherein removing dissolved gases comprises:
- freezing the oil and the aqueous liquid;
- and
- creating a vacuum.
The process of 9 wherein said emulsion comprises a material selected from the group consisting of a pharmaceutical treating agent, a paint, a dye, a combustion fuel, a fuel additive, a food additive, a food product, a perfume, a cosmetic product, a hygiene product, a dermatological product, an insect repellent, a mineral, and a combination thereof.
Dependencies are inferred from the claim text.