The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 1982
Filed:
May. 22, 1980
David R McCoy, Austin, TX (US);
Robert M Gipson, Austin, TX (US);
Kitchener B Young, Ft. McMurray, CA;
Texaco Inc., White Plains, NY (US);
Texaco Canada, Inc., Ontario, CA;
Abstract
A process for recovering bitumen from oil-in-water (O/W) emulsions is disclosed wherein water soluble demulsifiers are used. These demulsifiers are polyols of 2 and greater functionality containing predominantly mixed ethylene oxide and propylene oxide wherein the ethylene oxide content of the polyol (by weight) is greater than about 70% but less than about 95%. The molecular weight of these polyols is greater than about 10,000. To resolve the bituminous petroleum emulsions, the process is carried out between 25.degree. and 120.degree. C. wherein the demulsifier of the invention is contacted with the bituminous emulsion.