Patents Assigned to Texaco Canada Resources, Inc.
  • Demulsification of bitumen emulsions using cationic polymers
    Patent number: 4382852
    Abstract: A process for recovering bitumen from oil-in-water (O/W) emulsions is disclosed wherein water soluble demulsifiers are used. These demulsifiers are cationic polymers of equal to or greater than about 2,000 molecular weight obtained by the reaction of polyalkoxydiamines with epihalohydrins. To resolve the bituminous petroleum emulsions, the process is carried out between 25.degree. and 160.degree. C. wherein the demulsifier of the invention is contacted with the bituminous emulsion.
    Type: Grant
    Filed: December 2, 1981
    Date of Patent: May 10, 1983
    Assignees: Texaco Canada Resources, Inc., Texaco Inc.
    Inventors: David R. McCoy, Kitchener B. Young