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:
Jul. 04, 2023
Filed:
Mar. 18, 2020
Applicant:
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Inventors:
Seth M. Washburn, Houston, TX (US);
Hsu Chiang, Humble, TX (US);
Catherine M. Dorsi, Houston, TX (US);
Tan-Jen Chen, Seattle, WA (US);
Assignee:
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 2/86 (2006.01); B01J 8/02 (2006.01); B01J 29/70 (2006.01);
U.S. Cl.
CPC ...
C07C 2/865 (2013.01); B01J 8/02 (2013.01); B01J 29/7038 (2013.01); C07C 2/864 (2013.01); C07C 2529/70 (2013.01);
Abstract
This disclosure provides an improved process for converting benzene/toluene via methylation with methanol/dimethyl ether for producing, e.g., p-xylene, comprising separating and recycling dimethyl ether from the methylation reaction product mixture effluent to the methylation reactor. High selectivity toward p-xylene, among others, can be achieved.