US Patent Issued to Celanese International on April 14 for "Production and purification of acetic acid" (Texas Inventors)

ALEXANDRIA, Va., April 15 -- United States Patent no. 12,600,692, issued on April 14, was assigned to Celanese International Corp. (Irving, Texas).

"Production and purification of acetic acid" was invented by David Lee (Houston), Yaw-Hwa Liu (Missouri City, Texas) and Ronald D. Shaver (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "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 ma...