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:
Aug. 18, 2009
Filed:
Jun. 03, 2003
Andreas Martin, Berlin, DE;
Venkata Narayana Kalevaru, Hyderabad, IN;
Bernhard Lücke, Berlin, DE;
Dirk Van Deynse, Tessenderlo, BE;
Marc Belmans, Tessenderlo, BE;
Frank Boers, Tessenderlo, BE;
Andreas Martin, Berlin, DE;
Venkata Narayana Kalevaru, Hyderabad, IN;
Bernhard Lücke, Berlin, DE;
Dirk Van Deynse, Tessenderlo, BE;
Marc Belmans, Tessenderlo, BE;
Frank Boers, Tessenderlo, BE;
Tessenderlo Chemie S.A., Tessenderlo, BE;
Abstract
The present invention relates to a method for preparing halogenated benzonitriles by vapor phase ammoxidation at a reaction temperature in the range of 300 to 500° C. in a fixed bed reactor using a three-component catalyst. More particularly, the method of the invention relates to a method for preparing 2,6-dichlorobenzonitrile (2,6-DCBN) from 2,6-dichlorotoluene (2,6-DCT) by vapor phase ammoxidation. The invention also relates to a three-component catalyst provided on a carrier and its use in a vapor phase ammoxidation reaction according to the invention. In addition, the invention provides a method for preparing the three-component catalyst.