Patents by Inventor Jan-Henry RAHE

Jan-Henry RAHE 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 continuously producing diols from aldehydes by means of Raney cobalt catalysis
    Patent number: 12122737
    Abstract: The present invention relates to a process for continuous production of C4-C10 Diols from C3-C9 aldehydes comprising the process steps of: a) base-catalyzed addition of formaldehyde onto C3-C9 aldehydes to obtain the corresponding hydroxyaldehydes and b) subsequent hydrogenation of the hydroxyaldehydes to afford the corresponding diols, wherein the hydrogenation of the hydroxyaldehydes is performed continuously in the liquid phase over a Raney™ cobalt catalyst in the presence of hydrogen without workup of the reaction mixture from the process step a).
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: October 22, 2024
    Assignee: OQ Chemicals GmbH
    Inventors: Joachim Reimer, Kurt Schalapski, Jan Henry Rahe, Jörg Arnold, Marcel Musenbrock
  • Method for Continuously Producing Diols from Aldehydes by Means of Raney Cobalt Catalysis
    Publication number: 20220213012
    Abstract: The present invention relates to a process for continuous production of C4-C10 Diols from C3-C9 aldehydes comprising the process steps of: a) base-catalyzed addition of formaldehyde onto C3-C9 aldehydes to obtain the corresponding hydroxyaldehydes and b) subsequent hydrogenation of the hydroxyaldehydes to afford the corresponding diols, wherein the hydrogenation of the hydroxyaldehydes is performed continuously in the liquid phase over a Raney™ cobalt catalyst in the presence of hydrogen without workup of the reaction mixture from the process step a).
    Type: Application
    Filed: June 2, 2020
    Publication date: July 7, 2022
    Inventors: Joachim REIMER, Kurt SCHALAPSKI, Jan Henry RAHE, Jörg ARNOLD, Marcel MUSENBROCK
  • Continuous production method for 2-methylene alkanals
    Patent number: 10501396
    Abstract: The present invention relates to the continuous production of 2-methylene alkanals in a tube reactor, wherein in the 2-position non-branched alkanals are reacted with formaldehyde under acid-base catalysis in the presence of secondary amines and carboxylic acids under laminar flow conditions.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: December 10, 2019
    Assignee: OXEA GMBH
    Inventors: Kurt Schalapski, Jan-Henry Rahe, Christoph Balzarek, Gregor Meier, Heinz Strutz
  • Continuous Production Method for 2-Methylene Alkanals
    Publication number: 20190218166
    Abstract: The present invention relates to the continuous production of 2-methylene alkanals in a tube reactor, wherein in the 2-position non-branched alkanals are reacted with formaldehyde under acid-base catalysis in the presence of secondary amines and carboxylic acids under laminar flow conditions.
    Type: Application
    Filed: September 5, 2017
    Publication date: July 18, 2019
    Inventors: Kurt SCHALAPSKI, Jan-Henry RAHE, Christoph BALZAREK, Gregor MEIER, Heinz STRUTZ