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. 04, 2011
Filed:
Apr. 12, 2006
Applicants:
Erich Armbruster, Naters, CH;
Thuy Quach, Glis, CH;
Günther Rosenthal, Brig, CH;
Brian Schwegler, Visp, CH;
Inventors:
Erich Armbruster, Naters, CH;
Thuy Quach, Glis, CH;
Günther Rosenthal, Brig, CH;
Brian Schwegler, Visp, CH;
Assignee:
Lon za AG, Basel, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 231/04 (2006.01); C07C 235/80 (2006.01);
U.S. Cl.
CPC ...
Abstract
Acetoacetic acid arylamides are continuously produced from diketene and primary or secondary aromatic amines under the conditions of a reactive distillation in the presence of water. The continuous method provides a high purity of the products, nearly quantitative yields and a high rate of throughput.