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:
Apr. 05, 2022
Filed:
Oct. 09, 2020
Exxonmobil Research and Engineering Company, Annandale, NJ (US);
Stephen H. Brown, Lebanon, NJ (US);
Brenda A. Raich, Annandale, NJ (US);
Beatrice M. Gooding, Hopewell, NJ (US);
Stephen M. Davis, Dawsonville, GA (US);
Federico Barrai, Houston, TX (US);
Warren B. Ames, Titusville, NJ (US);
Keith K. Aldous, Montgomery, TX (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
Methods are provided for processing deasphalted gas oils derived from thermally cracked resid fractions to form Group I, Group II, and/or Group III lubricant base oils. The yield of lubricant base oils (optionally also referred to as base stocks) can be increased by thermally cracking a resid fraction at an intermediate level of single pass severity relative to conventional methods. By performing thermal cracking to a partial level of conversion, compounds within a resid fraction that are beneficial for increasing both the viscosity and the viscosity index of a lubricant base oil can be retained, thus allowing for an improved yield of higher viscosity lubricant base oils from a thermally cracked resid fraction.