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. 17, 2012
Filed:
Mar. 09, 2007
Joaquin Bigorra, Llosas, Sabadell, ES;
Javier Raya, Sant Vicenc dels Horts, ES;
Emilio Brau, Balague, Barcelona, ES;
Manuel Seva, Castellbisbal, ES;
Ivan Francia, Barcelona, ES;
Ramon Valls, Barcelona, ES;
Joaquin Bigorra, Llosas, Sabadell, ES;
Javier Raya, Sant Vicenc dels Horts, ES;
Emilio Brau, Balague, Barcelona, ES;
Manuel Seva, Castellbisbal, ES;
Ivan Francia, Barcelona, ES;
Ramon Valls, Barcelona, ES;
Cognis IP Management GmbH, Duesseldorf, DE;
Abstract
A continuous process for the production of mono- or dicarboxylic acid alkyl amides is described, which is characterized in that: fresh mono- or dicarboxylic acid is placed into a first reactor (R) connected with a distillation column (C) and subjected to a reaction with ammonia or gaseous alkyl amine to form a pre-mixture consisting of mono- or dicarboxylic acid alkyl amide and unreacted mono- or dicarboxylic acid, while the water of condensation is distilled off; said pre-mixture is transferred into a second reactor (R) also equipped with a distillation column (C) and subjected to a further reaction with ammonia or gaseous alkyl amine to substantially convert all unreacted mono- or dicarboxylic acid into mono- or dicarboxylic acid alkyl amide; and all unreacted ammonia or gaseous alkyl amine is transferred into the first reactor (R) to start the amidation reaction.