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:
Aug. 25, 2009
Filed:
Jul. 01, 2005
Ramesh Varadaraj, Flemington, NJ (US);
Cornelius Hendrick Brons, Easton, PA (US);
Ramesh Varadaraj, Flemington, NJ (US);
Cornelius Hendrick Brons, Easton, PA (US);
Exxonmobil Research and Engineering Company, Annandale, NJ (US);
Abstract
A method for reducing the viscosity and toluene equivalence of an oil containing asphaltenes comprises the steps of: a) mixing with the oil, a polar solvent, and an asphaltene dispersant additive wherein the weight ratio of oil:polar solvent is in the range of 10:0.1 to 10:5, the asphaltene dispersant additive is at a treat rate in the range of 0.025 to 5 weight percent based on the weight of the oil, and then, b) removing at least 90 wt % of the polar solvent from the mixture of oil, polar solvent and the asphaltene dispersant additive to provide upgraded oil with reduced viscosity and toluene equivalence.