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. 14, 1981
Filed:
Mar. 03, 1980
Applicant:
Inventors:
Klaus Volkamer, Frankenthal, DE;
Klaus Brollos, Seeheim, DE;
Alfred Lindner, Bobenheim-Roxheim, DE;
Ulrich Wagner, Limburgerhof, DE;
Hans-Martin Weitz, Bad Duerkheim, DE;
Klaus-Jurgen Schneider, Neustadt, DE;
Assignee:
BASF Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C07C / ;
U.S. Cl.
CPC ...
203 53 ; 203 56 ; 203 58 ; 203 60 ; 203 63 ; 585810 ; 585862 ; 585865 ; 585866 ;
Abstract
A process for isolating a conjugated diolefin from a C.sub.4 - or C.sub.5 -hydrocarbon mixture containing the diolefin, by single-stage or multi-stage extractive distillation using a selective solvent, wherein the selective solvent is a solvent mixture which comprises