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:
Dec. 19, 2006
Filed:
Sep. 11, 2002
Applicants:
Ortmund Lang, Quirnbach, DE;
Bernd Rumpf, Hockenheim, DE;
Matthias Frauenkron, Freinsheim, DE;
Thomas Manderbach, Ludwigshafen, DE;
Bernd Stein, Seeheim-Jugenheim, DE;
Inventors:
Ortmund Lang, Quirnbach, DE;
Bernd Rumpf, Hockenheim, DE;
Matthias Frauenkron, Freinsheim, DE;
Thomas Manderbach, Ludwigshafen, DE;
Bernd Stein, Seeheim-Jugenheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 487/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Highly pure triethylenediamine is obtained by a process in which triethylenediamine is freed from high boilers and then the triethylenediamine is vaporized from the mixture thus obtained and is passed into a liquid solvent. The process makes it possible in particular to obtain highly pure solutions of triethylenediamine. Crystallization is generally unnecessary.