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. 16, 2012
Filed:
Jun. 01, 2007
Uwe Boehmke, Darmstadt, DE;
Klaus Schimossek, Bensheim, DE;
Detlef Bloos, Eberbach, DE;
Michael Neusius, Darmstadt, DE;
Stephan Massoth, Biblis, DE;
Guenther Graeff, Alsbach-Haehnlein, DE;
Alexander Dardin, Laudenbach, DE;
Matthias Fischer, Floersheim-Dalsheim, DE;
Volker Stephan, Brensbach, DE;
Uwe Boehmke, Darmstadt, DE;
Klaus Schimossek, Bensheim, DE;
Detlef Bloos, Eberbach, DE;
Michael Neusius, Darmstadt, DE;
Stephan Massoth, Biblis, DE;
Guenther Graeff, Alsbach-Haehnlein, DE;
Alexander Dardin, Laudenbach, DE;
Matthias Fischer, Floersheim-Dalsheim, DE;
Volker Stephan, Brensbach, DE;
Evonik Rohmax Additives GmbH, Darmstadt, DE;
Abstract
The present invention relates to processes for preparing carboxylic acid derivatives, comprising the reaction of at least one carboxylic acid and/or of a carboxylic acid derivative with at least one alcohol and/or an amine in the presence of a metal-containing catalyst, wherein, after the reaction has ended, the metal-containing catalyst is contacted with water and a superabsorbent, the contacting of the catalyst with the water leading to hydrolysis of the catalyst. The present invention further relates to the use of superabsorbents for removing a metal-containing catalyst from a mixture after hydrolysis of the catalyst.