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:
Feb. 03, 2009
Filed:
Jul. 15, 2004
York Alexander Beste, Mannheim, DE;
Hartmut Schoenmakers, Dossenheim, DE;
Wolfgang Arlt, Hohen Neuendorf, DE;
Matthias Seiler, Griesheim, DE;
Carsten Jork, Berlin, DE;
York Alexander Beste, Mannheim, DE;
Hartmut Schoenmakers, Dossenheim, DE;
Wolfgang Arlt, Hohen Neuendorf, DE;
Matthias Seiler, Griesheim, DE;
Carsten Jork, Berlin, DE;
BASF Aktiengesellschart, , DE;
Abstract
Process for working up a bottom stream wherein high boilers and ionic liquid from an extractive rectification in which the ionic liquid is used as entrainer. The process includes feeding the bottom stream to an evaporation stage which is operated at a pressure of less than 500 mbar or to a stripper which is operated through use of inert gas or steam, and the major part of the high boiler present is separated off in vapor form from the ionic liquid.