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:
Jul. 13, 2010
Filed:
Jan. 07, 2005
Applicant:
Matthias Maase, Speyer, DE;
Inventor:
Matthias Maase, Speyer, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/00 (2006.01); C07D 233/54 (2006.01); C07D 233/58 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a process for the distillation of ionic liquids, in which a pressure not higher than ambient pressure is set in a first step and the ionic liquid is heated to a temperature in the range from 60° C. to 350° C. in a second step. The process is employed, in particular, for the purification of ionic liquids.