Patent · US Active

Sequential deasphalting for base stock production

US10550341B2 · kind B2 · utility

0Cited by

114References

18Claims

0Family size

Assignee

EXXONMOBIL RESEARCH AND ENGINEERING COMPANY · US

Inventors

Mohsen N. Harandi · Lawrenceville, US
Doron Levin · Highland Park, US
Himanshu Gupta · Johnston, US
James R. Lattner · University Park, US
Glenn C. Wood · Houston, US
Keith K. Aldous · League City, US
Timothy L. Hilbert · Sewell, US
Michael B. Carroll · Mantua, US
Ajit B. Dandekar · South Plainfield, US
Sara L. Yohe · Raritan, US
Stephen H. Brown · Lebanon, US
Tracie L. Owens · Houston, US
April D. Ross · Beaumont, US
Eric B. Senzer · Coral Springs, US
Steven Pyl · Annandale, US

Key dates

Filing date	Dec 27, 2016
Grant date	Feb 4, 2020
Priority date	—
Expiry date	Feb 1, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/129
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Methods are provided for producing lubricant base stocks from deasphalted oils formed by sequential deasphalting. The deasphalted oil can be exposed a first deasphalting process using a first solvent that can provide a lower severity of deasphalting and a second deasphalting process using a second solvent that can provide a higher severity of deasphalting. This can result in formation of at least a deasphalted oil and a resin fraction. The resin fraction can represent a fraction that traditionally would have been included as part of a deasphalter rock fraction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.