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:
May. 07, 2013
Filed:
Oct. 28, 2011
Applicants:
Christof Wilhelm Wigbers, Mannheim, DE;
Nina Challand, Mannheim, DE;
Johann-peter Melder, Böhl-Iggelheim, DE;
Udo Rheude, Otterstadt, DE;
Roman Dostalek, Neuleiningen, DE;
Inventors:
Christof Wilhelm Wigbers, Mannheim, DE;
Nina Challand, Mannheim, DE;
Johann-Peter Melder, Böhl-Iggelheim, DE;
Udo Rheude, Otterstadt, DE;
Roman Dostalek, Neuleiningen, DE;
Assignee:
BASF SE, , DE;
Primary Examiner:
Int. Cl.
CPC ...
C07D 241/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
Process for preparing 1,4-bishydroxyethylpiperazine (BHEPIP) of the formula I wherein diethanolamine (DEOA) of the formula II is reacted in the liquid phase in a reactor at a temperature in the range from 130 to 300° C. in the presence of a copper-comprising, chromium-free heterogeneous catalyst.