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:
Jan. 17, 2006
Filed:
Jul. 07, 2003
Applicants:
Dirk Franke, Birkenheide, DE;
Klaus Horchler, Limburgerhof, DE;
Vilmos Czikkely, Mannheim, DE;
Inventors:
Assignee:
COMPO GmbH & Co. KG, Münster, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 403/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The continuous production of acetylene diurea takes place by means of the reaction of glyoxal with urea in the presence of mineral acids. The reaction is carried out in at least one reactor having a mixing device, into which glyoxal, urea, and mineral acid are continuously fed, and from which a suspension of acetylene diurea in mother liquor is discharged. The acetylene diurea is mechanically removed from the mother liquor, and the remaining mother liquor is recycled back into the reactor, in whole or in part.