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. 14, 2026
Filed:
Jun. 03, 2021
Applicant:
Celanese International Corporation, Irving, TX (US);
Inventors:
David Lee, Houston, TX (US);
Yaw-Hwa Liu, Missouri City, TX (US);
Ronald D. Shaver, Houston, TX (US);
Assignee:
Celanese International Corporation, Irving, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/12 (2006.01); C07C 51/44 (2006.01);
U.S. Cl.
CPC ...
C07C 51/12 (2013.01); C07C 51/44 (2013.01);
Abstract
Provided herein is a process for the production and purification of acetic acid. In particular, this disclosure relates to improved processes for producing and purifying acetic acid by the carbonylation of methanol in the presence of a Group VIII metal carbonylation catalyst. The acetic acid production and purification process described herein controls the formation and mass composition of acetal impurities, such as 1,1-dimethoxyethane.