Water emulsions of Fischer-Tropsch waxes
AssigneeExxon Research & Engineering Co.
InventorsTapan Chakrabarty, Robert J. Wittenbrink, Paul J. Berlowitz, Loren L. Ansell
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Abstract
Hydrocarbon in water emulsions comprising Fischer-Tropsch process water, at least 20 to about 90 weight percent of a Fischer-Tropsch wax, a first nonionic surfactant having an HLB of at least 11 and a second nonionic surfactant having an HLB less than 11. Said emulsions are liquid at room temperature and pour by ordinary gravity. Also disclosed are methods of making said hydrocarbon in water emulsions.
Claims7
A hydrocarbon in water emulsion comprising:
- Fischer-Tropsch process water;
- at least 20 to about 90 weight % of a Fischer-Tropsch derived wax;
- from about 2.25 to 5 weight % based on the weight of wax and water of a first nonionic surfactant having an HLB of at least 11;
- and
- from about 0.05 to 5 weight % based on the weight of wax and water of a second nonionic surfactant having an HLB of less than 11;
- and
- wherein said emulsion is liquid at room temperature and pours by ordinary gravity.
A method of forming a wax in water emulsion having greater than 20 to about 90 wt % Fischer-Tropsch wax comprising:
- melting a Fischer-Tropsch wax by heating;
- mixing at least 20 to about 90 wt % of the melted Fischer-Tropsch wax with Fischer-Tropsch process water and a first nonionic surfactant having an HLB of at least 11 to produce a pre-emulsion;
- and
- mixing said pre-emulsion with a second nonionic surfactant having an HLB of less than 11 to form a wax on water emulsion;
- and
- wherein said emulsion is liquid at room temperature and pours by ordinary gravity.
Dependencies are inferred from the claim text.