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. 01, 2009
Filed:
Jul. 11, 2007
Applicants:
Hubert Redlingshoefer, Münchsteinach, DE;
Christoph Weckbecker, Gründau-Lleblos, DE;
Inventors:
Hubert Redlingshoefer, Münchsteinach, DE;
Christoph Weckbecker, Gründau-Lleblos, DE;
Assignee:
Degussa GmbH, Dusseldorf, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 319/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a process for preparing alkyl mercaptans by catalytic gas phase reaction of alkanols and hydrogen sulphide over alkali metal tungstates, the reaction being performed in at least two successive reaction zones which contain catalysts of different activity and selectivity.