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:
Jun. 08, 2010
Filed:
Dec. 28, 2007
Bong-kyu Chang, San Rafael, CA (US);
Huping Luo, Richmond, CA (US);
Moinuddin Ahmed, Hercules, CA (US);
Krishniah Parimi, Alamo, CA (US);
Saleh Elomari, Fairfield, CA (US);
Bong-Kyu Chang, San Rafael, CA (US);
Huping Luo, Richmond, CA (US);
Moinuddin Ahmed, Hercules, CA (US);
Krishniah Parimi, Alamo, CA (US);
Saleh Elomari, Fairfield, CA (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
A regeneration process for re-activating an ionic liquid catalyst, which is useful in a variety of reactions, especially alkylation reactions, and which has been deactivated by conjunct polymers. The process includes a reaction step and a solvent extraction step. The process comprises (a) providing the ionic liquid catalyst, wherein at least a portion of the ionic liquid catalyst is bound to conjunct polymers; and (b) reacting the ionic liquid catalyst with aluminum metal to free the conjunct polymers from the ionic liquid catalyst in a stirred reactor or a fixed reactor. The conjunct polymer is then separated from the catalyst phase by solvent extraction in a stirred extraction or packed column.