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:
Mar. 04, 2014
Filed:
Mar. 03, 2010
Tonia Weber, Darmstadt, DE;
Alexander Kaufmann, Dinslaken, DE;
Oliver Borgmeier, Neuss, DE;
Thorsten Kreickmann, Oberhausen, DE;
Heinz Strutz, Moers, DE;
Diana Utz, Fürth, DE;
Elias Klemm, Nürnberg, DE;
Claudia Liebold, Chemnitz, DE;
Tonia Weber, Darmstadt, DE;
Alexander Kaufmann, Dinslaken, DE;
Oliver Borgmeier, Neuss, DE;
Thorsten Kreickmann, Oberhausen, DE;
Heinz Strutz, Moers, DE;
Diana Utz, Fürth, DE;
Elias Klemm, Nürnberg, DE;
Claudia Liebold, Chemnitz, DE;
Oxea GmbH, Oberhausen, DE;
Abstract
A process for preparing aliphatic carboxylic acids having 3 to 10 carbon atoms by oxidizing the corresponding aldehydes with oxygen or oxygen-containing gases, characterized in that (i) the oxidation is performed in a microreactor at elevated pressure and with an oxygen excess based on the stoichiometrically required amount of oxygen, and (ii) in that the reaction mixture removed from the microreactor is passed through at least one postreactor without further addition of oxygen, and (iii) wherein the oxidation reaction in the microreactor is performed under such conditions that aldehyde and corresponding peracid formed are present in the reaction mixture removed in a molar ratio within a range of 1:(0.9 to 1.1), preferably of 1:(0.95 to 1.05).