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. 15, 1991
Filed:
Feb. 28, 1991
Applicant:
Inventors:
Joseph R Zoeller, Kingsport, TN (US);
Steven L Cook, Kingsport, TN (US);
Charles E Outlaw, Kingsport, TN (US);
Robert M Schisla, Jr, Kingsport, TN (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
203 46 ; 203 81 ; 203 83 ; 203 96 ; 203 97 ; 203D / ; 560248 ; 567608 ; 567891 ; 568411 ; 570263 ;
Abstract
Disclosed is an improved process for the removal of acetone from a production system wherein acetic anhydride is produced by contacting a mixture containing methyl iodide and methyl acetate and/or dimethyl ether with carbon monoxide in the presence of a carbonylation catalyst or catalyst system. The process involves a water-methyl iodide extraction step wherein acetone is separated from a mixture of methyl acetate, methyl iodide and acetone.