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:
Apr. 24, 2012
Filed:
Feb. 08, 2007
Karin Pickenäcker, Lampertheim, DE;
Johann-peter Melder, Böhl-Iggelheim, DE;
Bram Willem Hoffer, Heidelberg, DE;
Thomas Krug, Worms, DE;
Gunther Van Cauwenberge, Temse, BE;
Frank-friedrich Pape, Kleinniedesheim, DE;
Karin Pickenäcker, Lampertheim, DE;
Johann-Peter Melder, Böhl-Iggelheim, DE;
Bram Willem Hoffer, Heidelberg, DE;
Thomas Krug, Worms, DE;
Gunther van Cauwenberge, Temse, BE;
Frank-Friedrich Pape, Kleinniedesheim, DE;
BASF SE, , DE;
Abstract
Processes comprising: providing a mixture comprising monoethylene glycol and diethylenetriamine; and subjecting the mixture to extractive distillation with a diethylenetriamine-selective solvent comprising triethylene glycol to provide a first stream comprising monoethylene glycol and a second stream comprising diethylenetriamine; wherein the first stream is substantially free of diethylenetriamine, and wherein the second stream is substantially free of monoethylene glycol.