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. 28, 2010
Filed:
Oct. 28, 2003
Didier Bonnet, Lyon, FR;
Daniel Amoros, Venissieux, FR;
Jean-pierre Simonato, Sassenage, FR;
Frédéric Augier, Saint Symphorien D'Ozon, FR;
Maria Ignez Broglio, Lyon, FR;
Didier Bonnet, Lyon, FR;
Daniel Amoros, Venissieux, FR;
Jean-Pierre Simonato, Sassenage, FR;
Frédéric Augier, Saint Symphorien D'Ozon, FR;
Maria Ignez Broglio, Lyon, FR;
Rhodia Polyamide Intermediates, Saint Fons, FR;
Abstract
The present invention relates to a process for producing carboxylic acids. It relates more particularly to a process for producing carboxylic acids by oxidation of a hydrocarbon with oxygen or a gas containing oxygen, and even more particularly to the oxidation of cyclohexane to adipic acid. The invention relates to a process for producing carboxylic acids by oxidation with oxygen or a gas containing oxygen of a cycloaliphatic hydrocarbon in the presence of an oxidation catalyst and of a monocarboxylic oxidation solvent that is lipophilic in nature, comprising a step of extraction of the dicarboxylic acids formed in the oxidation step, consisting in carrying out, in liquid phase, an extraction of the diacids using water.