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:
Feb. 23, 2016
Filed:
Mar. 16, 2012
Saleh Ali Elomari, San Francisco, CA (US);
Stephen Joseph Miller, San Francisco, CA (US);
Saleh Ali Elomari, San Francisco, CA (US);
Stephen Joseph Miller, San Francisco, CA (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
We provide a process for making a base oil, comprising: feeding an olefin feed comprising a propylene to an oligomerization zone comprising an acidic ionic liquid catalyst prepared from an organic-based cation; and tuning an oligomerizing step in the oligomerization zone by mixing a C6+olefin with the propylene in the oligomerization zone to increase a viscosity index of the base oil. We also provide a process for making a base oil, comprising tuning an oligomerizing step by mixing a C6+olefin with a propylene in an oligomerization zone comprising an acidic ionic liquid catalyst prepared from an organic-based cation to increase a viscosity index of the base oil produced in the oligomerization zone; wherein the base oil has selected properties.