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. 01, 2005
Filed:
Sep. 09, 2002
Applicants:
Thomas Greindl, Bad Duerkheim, DE;
Gerold Braun, Ludwigshafen, DE;
Friedrich Wirsing, Speyer, DE;
Georg Krug, Moerlenbach, DE;
Inventors:
Thomas Greindl, Bad Duerkheim, DE;
Gerold Braun, Ludwigshafen, DE;
Friedrich Wirsing, Speyer, DE;
Georg Krug, Moerlenbach, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C253/22 ;
U.S. Cl.
CPC ...
Abstract
The invention relates to a continuous process, carried out in two steps, for the cyanoalkylation of compounds having one or more NH functions by reaction thereof with carbonyl compounds and hydrocyanic acid, in which the first step is carried out without pressure at a temperature which is below the boiling point of the reaction mixture.