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:
Nov. 27, 2007
Filed:
Jul. 11, 2006
Johann Stamm, Frankfurt, DE;
Bernd Rinne, Frankfurt, DE;
Stefan Hess, Gross-Gerau, DE;
Hans-jochen Sachs, Frankfurt, DE;
Michael Sehr, Limburg, DE;
Michael J. Bayer, Eschborn, DE;
Berthold Nuber, Frankfurt, DE;
Martin Wagner, Frankfurt, DE;
Johann Stamm, Frankfurt, DE;
Bernd Rinne, Frankfurt, DE;
Stefan Hess, Gross-Gerau, DE;
Hans-Jochen Sachs, Frankfurt, DE;
Michael Sehr, Limburg, DE;
Michael J. Bayer, Eschborn, DE;
Berthold Nuber, Frankfurt, DE;
Martin Wagner, Frankfurt, DE;
Celanese Chemicals Europe GmbH, Oberhausen, DE;
Abstract
A process for isolating vinyl acetate from the gas mixture formed in the reaction of ethylene with acetic acid and oxygen in the gas phase over catalysts comprising palladium or palladium compounds, with recirculation of the acetic-acid solution obtained in the circulating gas scrubber to the first distillation column (predewatering column).