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:
Sep. 30, 2014
Filed:
May. 09, 2011
Sandra Chouzier, Lyons, FR;
Gérard Mignani, Lyons, FR;
Simon Rousseau, Gradignan, FR;
Flavie Sarrazin, Talence, FR;
Sergio Mastroianni, Lyons, FR;
Sandra Chouzier, Lyons, FR;
Gérard Mignani, Lyons, FR;
Simon Rousseau, Gradignan, FR;
Flavie Sarrazin, Talence, FR;
Sergio Mastroianni, Lyons, FR;
Rhodia Operations, Aubervilliers, FR;
Abstract
A process for preparing dicarboxylic acids is described. More particularly a process is described for preparing adipic acid (1,6-hexanedioic acid), by the action of nitric acid, starting from cyclic ketones or alcohols which are the corresponding compounds from the standpoint of the number of carbon atoms, in the presence of one or more oxides of nitrogen at a molar concentration in the reaction mixture of greater than 2.5 mmol per kg of reaction mixture.