Patents by Inventor Kathrin Luise Mariethres WERTH

Kathrin Luise Mariethres WERTH 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 preparing oligo ethylene glycol methyl ether borate
    Patent number: 11926639
    Abstract: A process for preparing oligo ethylene glycol methyl ether borate involves feeding boric acid and oligo ethylene glycol monomethyl ether into a reactor, and reacting to obtain a raw product containing oligo ethylene glycol methyl ether borate, water, and unreacted boric acid and oligo ethylene glycol monomethyl ether. The raw product is fed to a reactive distillation device and boric acid is reacted with oligo ethylene glycmonomethyl ether for full conversion of boric acid. A distillate stream containing water is transferred from the top of the reactive distillation device to a condenser, and a condensed liquid stream is recycled to the top of the reactive distillation device. A bottom product stream containing oligo ethylene glycol methyl ether borate is withdrawn from the reactive distillation device. The bottom product stream is partially recycled to a reboiler. The resulting vapor stream is recycled to the bottom of the reactive distillation device.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: March 12, 2024
    Assignee: BASF SE
    Inventors: Kathrin Luise Mariethres Werth, Thomas Holtmann, Rainer Papp, Mirko Haider, Joachim Wulff-Doering
  • Process for preparing oligo ethylene glycol methyl ether borate
    Publication number: 20230002421
    Abstract: A process for preparing oligo ethylene glycol methyl ether borate involves feeding boric acid and oligo ethylene glycol monomethyl ether into a reactor, and reacting to obtain a raw product containing oligo ethylene glycol methyl ether borate, water, and unreacted boric acid and oligo ethylene glycol monomethyl ether. The raw product is fed to a reactive distillation device and boric acid is reacted with oligo ethylene glycmonomethyl ether for full conversion of boric acid. A distillate stream containing water is transferred from the top of the reactive distillation device to a condenser, and a condensed liquid stream is recycled to the top of the reactive distillation device. A bottom product stream containing oligo ethylene glycol methyl ether borate is withdrawn from the reactive distillation device. The bottom product stream is partially recycled to a reboiler. The resulting vapor stream is recycled to the bottom of the reactive distillation device.
    Type: Application
    Filed: November 19, 2020
    Publication date: January 5, 2023
    Applicant: BASF SE
    Inventors: Kathrin Luise Mariethres WERTH, Thomas Holtmann, Rainer Papp, Mirko Haider, Joachim Wulff-Doering