Patents by Inventor Dirk Van Deynse

Dirk Van Deynse has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for hydrolyzing alpha-chlorinated toluene compounds
    Patent number: 9006497
    Abstract: The current invention provides and improved method for hydrolyzing alpha-chlorinated toluene compounds comprising the steps of:—providing an alpha-chlorinated toluene compound of formula (I) wherein at least one of R1, R2 and R3 is CI and wherein (Ra)n designates that the benzene nucleus may have one or more substituents which may be same or different and are selected from the group consisting of H, CI, Br and —CmH2m+1, n being 0 or an integer from 1 to 5, and m being an integer, preferably from 1 to 6,—hydrolyzing said compound with water in the presence of a metal oxide.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: April 14, 2015
    Assignee: INEOS Chlorotoluenes Limited
    Inventors: Dirk Van Deynse, Koen Van Aken, Wouter Van Hecke
  • METHOD FOR HYDROLYZING ALPHA - CHLORINATED TOLUENE COMPOUNDS
    Publication number: 20140155657
    Abstract: The current invention provides and improved method for hydrolyzing alpha-chlorinated toluene compounds comprising the steps of:—providing an alpha-chlorinated toluene compound of formula (I) wherein at least one of R1, R2 and R3 is CI and wherein (Ra)n designates that the benzene nucleus may have one or more substituents which may be same or different and are selected from the group consisting of H, CI, Br and —CmH2m+1, n being 0 or an integer from 1 to 5, and m being an integer, preferably from 1 to 6,—hydrolyzing said compound with water in the presence of a metal oxide.
    Type: Application
    Filed: July 26, 2011
    Publication date: June 5, 2014
    Applicant: INEOS ChloroToluenes Limited
    Inventors: Dirk Van Deynse, Koen Van Aken, Wouter Van Hecke
  • METHOD FOR PREPARING LAMORTRIGINE AND ITS INTERMEDIATE 2,3-DICHLOROBENZOYL CHLORIDE
    Publication number: 20090312544
    Abstract: A method for preparing 3,5-diamino-6-(2,3-dichlorophenyl)-1,2,4-triazine, commonly known as lamotrigine, is disclosed. A method of preparing the intermediate, 2,3-dichlorobenzoyl chloride, by photochlorination of 2,3-dichlorobenzotrichloride followed by hydrolysis is also disclosed. The intermediate may then be used in the preparation of lamotrigine.
    Type: Application
    Filed: May 30, 2007
    Publication date: December 17, 2009
    Applicant: Calaire Chimie SAS
    Inventors: Dirk Van Deynse, Marc Belmans, Frank Boers, Michel Dumur, Alain Laconi
  • Method for the preparation of halogenated benzonitriles
    Patent number: 7576233
    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.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: August 18, 2009
    Assignee: Tessenderlo Chemie S.A.
    Inventors: Andreas Martin, Venkata Narayana Kalevaru, Bernhard Lücke, Dirk Van Deynse, Marc Belmans, Frank Boers