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:
Mar. 17, 2009
Filed:
Jan. 26, 2005
Applicants:
Tim Jungkamp, Kapellen, BE;
Hans-martin Polka, Mannheim, DE;
Robert Baumann, Mannheim, DE;
Michael Bartsch, Neustadt, DE;
Gerd Haderlein, Grünstadt, DE;
Hermann Luyken, Ludwigshafen, DE;
Jens Scheidel, Hirschberg, DE;
Inventors:
Tim Jungkamp, Kapellen, BE;
Hans-Martin Polka, Mannheim, DE;
Robert Baumann, Mannheim, DE;
Michael Bartsch, Neustadt, DE;
Gerd Haderlein, Grünstadt, DE;
Hermann Luyken, Ludwigshafen, DE;
Jens Scheidel, Hirschberg, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 253/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process is described for removing hydrogen cyanide from mixtures comprising pentenenitrile, wherein the removal is effected by an azeotropic distillation of hydrogen cyanide with 1,3-butadiene.