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:
Jan. 29, 2013
Filed:
Jun. 09, 2009
Ute Lichtfers, Karlsruhe, DE;
Robin Thiele, Speyer, DE;
Susanna Voges, Ludwigshafen, DE;
Georg Sieder, Bad Dürkheim, DE;
Oliver Spuhl, Mannheim, DE;
Hugo Rafael Garcia Andarcia, Mannheim, DE;
Ute Lichtfers, Karlsruhe, DE;
Robin Thiele, Speyer, DE;
Susanna Voges, Ludwigshafen, DE;
Georg Sieder, Bad Dürkheim, DE;
Oliver Spuhl, Mannheim, DE;
Hugo Rafael Garcia Andarcia, Mannheim, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Absorption medium for acid gases comprising an oligoamine (A) of the general formula (I) and a piperazine derivative (B) of the general formula (II) in which the weight ratio of oligoamine (A) to the piperazine derivative (B) is 0.2 to 25, and also process for removing acid gases from a gas stream by contacting the gas stream at a pressure of 0.05 to 10 MPa abs with an aqueous solution of said absorption medium which is brought to and maintained at a temperature of 20 to 80° C.