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
Applicant:
Inventors:
David R McCoy, Austin, TX (US);
Robert M Gipson, Austin, TX (US);
Kitchener B Young, Ft. McMurray, CA;
Colin L LaBerge, Alberta,both of, CA;
Assignees:
Texaco Inc., White Plains, NY (US);
Texaco Canada, Inc., Ontario, CA;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C10G / ;
U.S. Cl.
CPC ...
210708 ; 208 / ; 208188 ; 252341 ; 252331 ;
Abstract
A process for recovering bitumen from oil-in-water (O/W) emulsions is disclosed wherein water soluble demulsifiers are used. These demulsifiers are hydrophilic polyurethanes wherein the ethylene oxide content of the polyol portion of the polyurethane is greater than about 70% by weight. 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.