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:
Aug. 16, 2011
Filed:
May. 04, 2006
Applicants:
Reinhard Langer, Tönisvorst, DE;
Paul Wagner, Düsseldorf, DE;
Heinrich Grzinia, Erkelenz, DE;
Inventors:
Assignee:
SALTIGO GmbH, Langenfeld, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 317/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to the industrial purification of vinylene carbonate (VC). It was found that it is advantageous to subject the VC to be purified, before the purifying distillation, to a simple thermal treatment with organic compounds which have amidic nitrogen-hydrogen bonds.