Patents by Inventor Wolfgang WIESENHOEFER

Wolfgang WIESENHOEFER 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).

  • Impact of trace elements in the Grignard reaction
    Patent number: 11697641
    Abstract: The present invention relates to an improved process for preparing 2,4-dichloro-6-(4-methoxyphenyl)-1,3,5-triazine (DICAT) comprising reacting 4-bromoanisole with magnesium, and reacting the resulting Grignard reagent with cyanuric chloride, wherein the magnesium comprises additional metals as impurities in an amount of less than 0.027% by weight, based on the total weight of the magnesium.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: July 11, 2023
    Assignee: BASF SE
    Inventors: Joerg Baeuchle, Wolfgang Wiesenhoefer
  • IMPACT OF TRACE ELEMENTS IN THE GRIGNARD REACTION
    Publication number: 20220251050
    Abstract: The present invention relates to an improved process for preparing 2,4-dichloro-6-(4-methoxyphenyl)-1,3,5-triazine (DICAT) comprising reacting 4-bromoanisole with magnesium, and reacting the resulting Grignard reagent with cyanuric chloride, wherein the magnesium comprises additional metals as impurities in an amount of less than 0.027% by weight, based on the total weight of the magnesium.
    Type: Application
    Filed: March 25, 2020
    Publication date: August 11, 2022
    Inventors: Joerg BAEUCHLE, Wolfgang WIESENHOEFER