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:
Oct. 27, 1981
Filed:
Nov. 23, 1979
Applicant:
Inventors:
Serge L Lecolier, Janville sur Juine, FR;
Jean-Pierre G Senet, La Chapelle la Reine, FR;
Assignee:
Societe Nationale des Poudres et Explosifs, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 260408 ;
Abstract
The invention relates to a process for the manufacture of carboxylic acid chlorides by the phosgenation, under the action of heat, of the corresponding acids in the presence of a catalyst. The process according to the invention is characterized in that a compound possessing the skeleton ##STR1## is used as the catalyst, in which compound X is an oxygen atom or a nitrogen atom substituted by an alkyl group.