Patents by Inventor Jens Heimann

Jens Heimann 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).

  • PROCESS FOR ONE-STAGE PREPARATION OF 2-METHYLTETRAHYDROFURAN FROM FURFURAL OVER TWO CATALYSTS IN A STRUCTURED BED
    Publication number: 20100048922
    Abstract: The present invention provides a process for preparing 2-methyltetrahydrofuran by one-stage hydrogenation of furfural with a hydrogen-comprising gas in the presence of a structured bed of at least one copper catalyst and at least one catalyst which comprises at least one noble metal from groups 8, 9 and/or 10 of the periodic table of the elements applied on a support material.
    Type: Application
    Filed: June 24, 2008
    Publication date: February 25, 2010
    Applicant: BASF SE
    Inventors: Tobias Wabnitz, Daniel Breuninger, Jens Heimann, Rene Backes, Rolf Pinkos
  • PROCESS FOR WORKING UP SOLVENT-CONTAINING HYDROGENATION PRODUCT MIXTURES
    Publication number: 20090314992
    Abstract: The present invention relates to a process for separating off solvents from solvent-comprising hydrogenation outputs from a catalytic hydrogenation process, which comprise at least one water-soluble hydrogenation product having at least one alcohol, lactone, ether, lactam or amino group in a solvent which is immiscible or not completely miscible with water and has a boiling point below 100° C., wherein water is added to the hydrogenation output, the solvent-comprising phase is separated off and recirculated to the hydrogenation.
    Type: Application
    Filed: July 16, 2007
    Publication date: December 24, 2009
    Applicant: BASF SE
    Inventors: Rolf Pinkos, Jens Heimann, Hans-Martin Polka, Heiko Urtel, Gunther Windecker
  • METHOD FOR PREVENTING FUMARIC ACID DEPOSITS IN THE PRODUCTION OF MALEIC ACID ANHYDRIDE
    Publication number: 20090143601
    Abstract: The present invention provides a process for preventing fumaric acid deposits in the preparation of maleic anhydride, comprising the following steps: a) absorption of a C4-dicarboxylic acid or of a derivative from a crude product mixture into an organic solvent or water as an absorbent, b) removal of the C4-dicarboxylic acid or of a derivative from the absorbent, the absorbent thus recovered being catalytically hydrogenated fully or partly and recycled fully or partly into the absorption stage (a).
    Type: Application
    Filed: May 16, 2007
    Publication date: June 4, 2009
    Applicant: BASF SE
    Inventors: Rolf Pinkos, Gerd Kaibel, Ellen Dahlhoff, Gunther Windecker, Jens Heimann