Patents by Inventor Thomas Voessing

Thomas Voessing 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 producing aniline or an aniline derivative
    Patent number: 11788107
    Abstract: The invention relates to a method for producing aniline or an aniline derivative, in which a solution of aminobenzoic acid in aniline with a mass fraction of aniline in the solution, in relation to the total mass of aminobenzoic acid and aniline, in the region of 20% to 85%, is subject to a thermal decarboxylation at a temperature in the region of 165° C. to 500° C. without the presence of a non-system catalyst, such that the aminobenzoic acid is converted into aniline. The obtained aniline can be converted into derivatives, such as di- and polyamines of the diphenylmethane series.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: October 17, 2023
    Assignee: Covestro Intellectual Property Gmbh & Co. Kg
    Inventors: Jens Langanke, Franz Beggel, Gernot Jaeger, Wolf Kloeckner, Volker Michele, Thomas Voessing
  • METHOD FOR PRODUCING ANILINE OR AN ANILINE DERIVATIVE
    Publication number: 20210238638
    Abstract: The invention relates to a method for producing aniline or an aniline derivative, in which a solution of aminobenzoic acid in aniline with a mass fraction of aniline in the solution, in relation to the total mass of aminobenzoic acid and aniline, in the region of 20% to 85%, is subject to a thermal decarboxylation at a temperature in the region of 165° C. to 500° C. without the presence of a non-system catalyst, such that the aminobenzoic acid is converted into aniline. The obtained aniline can be converted into derivatives, such as di- and polyamines of the diphenylmethane series.
    Type: Application
    Filed: July 24, 2019
    Publication date: August 5, 2021
    Inventors: Jens Langanke, Franz Beggel, Gernot Jaeger, Wolf Kloeckner, Volker Michele, Thomas Voessing