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:
Dec. 18, 2012
Filed:
Aug. 30, 2007
Alexander May, Darmstadt, DE;
Jochen Ackermann, Muehltal, DE;
Hermann Siegert, Seeheim-Jugenheim, DE;
Bernd Vogel, Wiesbaden, DE;
Soenke Broecker, Ober-Ramstadt, DE;
Alexander May, Darmstadt, DE;
Jochen Ackermann, Muehltal, DE;
Hermann Siegert, Seeheim-Jugenheim, DE;
Bernd Vogel, Wiesbaden, DE;
Soenke Broecker, Ober-Ramstadt, DE;
Evonik Roehm GmbH, Darmstadt, DE;
Abstract
The present invention relates to a process for preparing carboxamides by hydrolysing carbonitriles in the presence of a catalyst comprising manganese dioxide, wherein the reaction mixture added to the catalyst comprising manganese dioxide has a pH in the range of 6.0 to 11.0 and the hydrolysis is performed in the presence of an oxidizing agent. The present invention further relates to a process for preparing alkyl (meth)acrylates, the process having a hydrolysis step according to the process described above.