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. 14, 2020
Filed:
Mar. 22, 2019
Lyondellbasell Acetyls, Llc, Houston, TX (US);
Noel C. Hallinan, Loveland, OH (US);
David L. Ramage, Friendswood, TX (US);
Daniel F. White, Houston, TX (US);
LyondellBasell Acetyls, LLC, Houston, TX (US);
Abstract
A method comprising: contacting methanol with carbon monoxide in the presence of a liquid reaction medium under carbonylation conditions to form a carbonylation product comprising acetic acid; separating the carbonylation product into a liquid fraction and a vapor fraction comprising a majority of the acetic acid in the carbonylation product; removing, from the vapor fraction, water, light ends having a boiling point less than acetic acid, heavy ends having a boiling point greater than acetic acid, or a combination thereof, to yield a crude acetic acid product comprising at least 99.5 wt % acetic acid, less than or equal to 0.2 wt % water, and less than or equal to 2000 ppm oxidizable impurities, based on the total weight of the crude acetic acid product; and contacting the crude acetic acid product with an acidic ion exchange resin to provide a purified acetic acid product comprising less than 100 ppm oxidizable impurities.