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:
Feb. 07, 2017
Filed:
Dec. 02, 2014
Applicant:
Wacker Chemie Ag, München, DE;
Inventors:
Willibald Dafinger, Röhrnbach, DE;
Marc Eckert, Calvert City, KY (US);
Assignee:
Wacker Chemie AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 67/04 (2006.01); C07C 67/62 (2006.01);
U.S. Cl.
CPC ...
C07C 67/04 (2013.01); C07C 67/62 (2013.01);
Abstract
The invention provides a process for preparing vinyl acetate in a heterogeneously catalyzed, continuous gas phase process by reacting ethylene with acetic acid and oxygen and subsequently working up the product gas stream, with inhibition of the polymerization of vinyl acetate during the workup of the product gas mixture by addition of one or more N-oxyl compounds which contain at least one N-oxyl radical group —N—O. as inhibitors which comprises adding the N-oxyl compound as a 50 to 85% by weight strength aqueous solution.