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:
Aug. 03, 2004
Filed:
Mar. 12, 2002
Applicant:
Inventors:
Ralph Busch, Worms, DE;
Heinz-Josef Kneuper, Niederkirchen, DE;
Theodor Weber, Ludwigshafen, DE;
Winfried Müller, Mannheim, DE;
Armin Stamm, Mainz, DE;
Jochem Henkelmann, Mannheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 5/158 ;
U.S. Cl.
CPC ...
C07C 5/158 ;
Abstract
The invention relates to a method for producing acid chlorides by converting carboxylic acids with carbon oxychlorides or thionyl chloride in the presence of a catalyst adduct of an N,N-disubstituted formamide of general formula (I) and carbon oxychloride or thionyl chloride. In the formula, R and R , independently from one another, mean C - to C -alkyl or R and R together mean a C - or C -alkylene chain. According to the inventive method, hydrogen chloride is added during and/or after the conversion.