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:
Oct. 13, 1992
Filed:
Apr. 19, 1991
Applicant:
Inventors:
Mark O Scates, Pearland, TX (US);
Russell K Gibbs, Jr, Houston, TX (US);
G Paull Torrence, Corpus Christi, TX (US);
Assignee:
Hoechst Celanese Corporation, Somerville, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
562608 ; 562519 ;
Abstract
Acetic acid containing iodide, unsaturates and carbonyl impurities is purified by treatment with ozone in the presence of an oxidation catalyst. The acetic acid product may be further contacted with activated carbon or ion-exchange resins for additional removal of impurities.