Patents by Inventor Michael van Eickels

Michael van Eickels 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).

  • Electrochemical process for production of tetraalkyl 1,2,3,4-butanetetracarboxylates
    Patent number: 12590375
    Abstract: An electrochemical process produces tetraalkyl 1,2,3,4-butanetetracarboxylates having alkyl groups with 1 to 6 carbon atoms. The process employs an electrohydrodimerization of dialkyl maleates having alkyl groups having 1 to 6 carbon atoms in a reactant solution with an alcohol and a conducting salt.
    Type: Grant
    Filed: January 6, 2025
    Date of Patent: March 31, 2026
    Assignee: Evonik Oxeno GmbH & Co. KG
    Inventors: Michael Grass, Johannes Kraft, Michael van Eickels, Sebastian Arndt, Carl-Friedrich Hoppe, Stephan Becker, David Sascha Bremer
  • PLASTICIZER COMPOSITION CONTAINING TRIMETHYL ESTERS OF CYCLOHEXANE-1,2,4-TRIPROPIONIC ACID AND A TRIALKYL TRIMELLITATE
    Publication number: 20260062566
    Abstract: A plasticizer composition contains a compound of the formula (1) and at least one trialkyl trimellitate, where the three alkyl groups in the trialkyl trimellitate each have 8 or 9 carbon atoms.
    Type: Application
    Filed: September 2, 2025
    Publication date: March 5, 2026
    Applicant: Evonik Oxeno GmbH & Co. KG
    Inventors: Michael Grass, Monika Rusek, Michael van Eickels
  • MIXED ESTERS OF CYCLOHEXANE-1,2,4-TRIPROPIONIC ACID AND A PLASTICIZER COMPOSITION COMPRISING SAID MIXED ESTERS
    Publication number: 20260062373
    Abstract: A plasticizer composition contains a compound of the formula (1) and at least one dialkyl terephthalate, where the two alkyl groups in the dialkyl terephthalate each have 8 or 9 carbon atoms.
    Type: Application
    Filed: September 2, 2025
    Publication date: March 5, 2026
    Applicant: Evonik Oxeno GmbH & Co. KG
    Inventors: Michael Grass, Monika Rusek, Michael van Eickels
  • TWO-STAGE PROCESS FOR PRODUCING TETRAALKYL 1,2,3,4 BUTANETETRACARBOXYLATES
    Publication number: 20250230118
    Abstract: A two-stage process produces tetraalkyl 1,2,3,4-butanetetracarboxylates having alkyl groups with 1 to 6 carbon atoms starting from tetrahydrophthalic anhydride (THPA). The process starts with an oxidation of tetrahydrophthalic anhydride (THPA), followed by a subsequent esterification of the resulting 1,2,3,4-butanetetracarboxylic acid with an alcohol having 1 to 6 carbon atoms.
    Type: Application
    Filed: January 6, 2025
    Publication date: July 17, 2025
    Applicant: Evonik Oxeno GmbH & Co. KG
    Inventors: Michael Grass, Johannes Kraft, Michael Woelk-Fährmann, Michael van Eickels, Lena Bergup, Stephan Becker
  • ELECTROCHEMICAL PROCESS FOR PRODUCTION OF TETRAALKYL 1,2,3,4-BUTANETETRACARBOXYLATES
    Publication number: 20250230557
    Abstract: An electrochemical process produces tetraalkyl 1,2,3,4-butanetetracarboxylates having alkyl groups with 1 to 6 carbon atoms. The process employs an electrohydrodimerization of dialkyl maleates having alkyl groups having 1 to 6 carbon atoms in a reactant solution with an alcohol and a conducting salt.
    Type: Application
    Filed: January 6, 2025
    Publication date: July 17, 2025
    Applicant: Evonik Oxeno GmbH & Co. KG
    Inventors: Michael Grass, Johannes Kraft, Michael van Eickels, Sebastian Arndt, Carl-Friedrich Hoppe, Stephan Becker, David Sascha Bremer
  • TETRAISOPENTYL ESTERS OF BUTANETETRACARBOXYLIC ACID, PRODUCTION THEREOF AND USE THEREOF AS PLASTICIZERS
    Publication number: 20240110040
    Abstract: Tetraisopentyl esters of butanetetracarboxylic acid are useful as plasticizers or as part of a plasticizer composition for polymers. A process for the production thereof, plasticizer compositions containing the tetraisopentyl esters of butanetetracarboxylic acid, and plastics compositions containing the tetraisopentyl esters of butanetetracarboxylic acid are also provided.
    Type: Application
    Filed: September 28, 2023
    Publication date: April 4, 2024
    Applicant: Evonik Operations GmbH
    Inventors: Imke SCHULZ, Michael Woelk-Fahrmann, Michael Grass, Stephan Becker, Michael Van Eickels
  • TETRAISOPENTYL ESTERS OF BUTANETETRACARBOXYLIC ACID HAVING A HIGH PROPORTION OF 3-METHYLBUTYL RADICALS
    Publication number: 20240110039
    Abstract: Tetraisopentyl esters of butanetetracarboxylic acid are useful as plasticizers or as part of a plasticizer composition for polymers, A process for the production thereof, plasticizer compositions containing the tetraisopentyl esters of butanetetracarboxylic acid, and plastics compositions containing the tetraisopentyl esters of butanetetracarboxylic acid are also provided,
    Type: Application
    Filed: September 28, 2023
    Publication date: April 4, 2024
    Applicant: Evonik Operations GmbH
    Inventors: Imke Schulz, Michael Woelk-Fährmann, Michael Grass, Stephan Becker, Michael van Eickels, Johannes Kraft