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:
Apr. 07, 2009
Filed:
Sep. 02, 2005
Applicants:
Andreas Deckers, Flomborn, DE;
Arnulf Lauterbach, Ludwigshafen, DE;
Anton Negele, Deidesheim, DE;
Thomas Schneider, Frankenthal, DE;
Inventors:
Andreas Deckers, Flomborn, DE;
Arnulf Lauterbach, Ludwigshafen, DE;
Anton Negele, Deidesheim, DE;
Thomas Schneider, Frankenthal, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01C 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
Process for preparing hydrocyanic acid by catalytic dehydration of gaseous formamide, in which a formamide-containing recycle stream is obtained from the product mixture after the dehydration and is recirculated to the dehydration, wherein the formamide-containing recycle stream contains from 5 to 50% by weight of water.