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. 08, 2005
Filed:
Sep. 25, 2001
Tim Jungkamp, Dossenhein, DE;
Dagmar Pascale Kunsmann-keitel, Limburgerhof, DE;
Robert Baumann, Mannheim, DE;
Peter Bassler, Viernheim, DE;
Wolfgang Siegel, Limburgerhof, DE;
Tim Jungkamp, Dossenhein, DE;
Dagmar Pascale Kunsmann-Keitel, Limburgerhof, DE;
Robert Baumann, Mannheim, DE;
Peter Bassler, Viernheim, DE;
Wolfgang Siegel, Limburgerhof, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A process is provided for the distillative separation of pentene nitrile isomers which have a relative volatility alpha ranging from 1.0 to 1.3 in the pressure range from 1 to 500 kPa, wherein the distillation is carried out in the presence of a liquid diluent which forms with the pentene nitrile isomers, under the same pressure conditions, azeotropes whose relative volatility alpha is higher than that of the pentene nitrile isomers to be separated.