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US 2003/0191195 A1Published application
Inversion of water-in-oil emulsions to oil-in-water emulsions
OwnerRamesh Varadarajinventor
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Abstract
A method to invert a water-in-oil emulsion to an oil-in-water emulsion comprises contacting the water-in-oil emulsion with an aqueous colloidal dispersion including hydroxides of elements of Group II and Group III of The Periodic Table of Elements and mixtures thereof and then mixing the water-in-oil emulsion and aqueous colloidal dispersion until the water-in-oil emulsion inverts to an oil-in-water emulsion.
Claims11
A method to invert a water-in-oil emulsion to an oil-in-water emulsion comprising:
- (a) contacting the water-in-oil emulsion with an aqueous colloidal dispersion comprising hydroxides of elements of Group II and Group III of The Periodic Table of Elements and mixtures thereof in a ratio range of 1:99 to 80:20 by weight of the water-in-oil emulsion to the weight of the aqueous colloidal dispersion;
- and
- (b) mixing the water-in-oil emulsion and aqueous colloidal dispersion until the water-in-oil emulsion inverts to an oil-in-water emulsion.
A method to recover oil from a water-in-oil emulsion comprising:
- (a) inverting the water-in-oil emulsion to an oil-in-water emulsion said inversion comprising, contacting the water-in-oil emulsion with an aqueous colloidal dispersion comprising hydroxides of elements of Group II and Group III of The Periodic Table of Elements and mixtures thereof in a ratio range of 1:99 to 80:20 by weight of the water-in-oil emulsion to the weight of the aqueous colloidal dispersion and mixing the water-in-oil emulsion and aqueous colloidal dispersion until the water-in-oil emulsion inverts to an oil-in-water emulsion;
- (b) breaking the inverted oil-in-water emulsion;
- and
- (c) recovering the oil and water phases.
1 more element
Dependencies are inferred from the claim text.