Patents by Inventor Lukas REISKY

Lukas REISKY 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 the decomposition of polyether-polyurethane
    Patent number: 12275819
    Abstract: A process is provided, by means of which polyurethanes, which have been formed from polyether polyols and aromatic isocyanates, can be decomposed to polyether polyols and aromatic amines.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: April 15, 2025
    Assignee: Covestro Intellectual Property GmbH & Co. KG
    Inventors: Lukas Reisky, Gernot Jaeger
  • METHOD FOR CLEAVING POLYURETHANE PRODUCTS
    Publication number: 20250034606
    Abstract: The invention relates to a method for cleaving polyurethane products, having the steps of (A) providing a polyurethane product which is based on isocyanate components and a polyol component; (B) reacting the polyurethane product with a monofunctional araliphatic alcohol in the presence of an alcoholysis catalyst, thereby obtaining a product mixture containing a liquid polyol phase and a solid carbamate of an isocyanate of the isocyanate component and the monofunctional araliphatic alcohol; and (C) separating the carbamate from the product mixture, thereby leaving the liquid polyol phase.
    Type: Application
    Filed: June 13, 2022
    Publication date: January 30, 2025
    Inventors: Dirk Hinzmann, Verena Schiffer, Antje Wehlau, Lena Schaffert, Lukas Reisky
  • METHOD OF RECOVERING RAW MATERIALS FROM POLYURETHANE PRODUCTS
    Publication number: 20250019515
    Abstract: The present invention relates to a method for recovering at least one raw material from a polyurethane product, comprising steps (A) providing a polyurethane product based on an isocyanate component and a polyol component, the isocyanate component comprising only isocyanates for which the corresponding amines have a boiling point at 1013 mbar(abs.) of at most 410° C.; (B) performing chemolysis of the polyurethane product with an alcohol and water; (C) processing the product of the chemolysis, comprising (C.I) extraction with an organic solvent, the boiling point of which at 1013 mbar(abs.) is in the range of 40° C. to 120° C., at a temperature in the range of 10° C. to 60° C., followed by (C.II) phase separation into a first product phase and into a second product phase; and (D) processing the first product phase to obtain the polyol, comprising (D.I.) separation of organic solvent by distillation and/or stripping, and (D.
    Type: Application
    Filed: November 28, 2022
    Publication date: January 16, 2025
    Inventors: Sebastian Pohl, Dirk Hinzmann, Maria Francisco Casal, Sebastian Scherf, Lukas Reisky, Juergen Bausa
  • NOVEL URETHANASES FOR THE ENZYMATIC DEGRADATION OF POLYURETHANES
    Publication number: 20220282287
    Abstract: The present invention relates to new urethanases for the enzymatic breakdown of polyurethanes and to an enzymatic process for the complete breakdown of polyurethanes into defined monomers.
    Type: Application
    Filed: March 11, 2022
    Publication date: September 8, 2022
    Inventors: Natalie BITTNER, Hartmut Nefzger, Gesa Behnken, Gernot Jager, Swantje Behnken, Lukas Reisky
  • PROCESS FOR THE DECOMPOSITION OF POLYETHER-POLYURETHANE
    Publication number: 20220259380
    Abstract: A process is provided, by means of which polyurethanes, which have been formed from polyether polyols and aromatic isocyanates, can be decomposed to polyether polyols and aromatic amines.
    Type: Application
    Filed: August 10, 2020
    Publication date: August 18, 2022
    Inventors: Lukas Reisky, Gernot Jaeger
  • NOVEL URETHANASES FOR THE ENZYMATIC DEGRADATION OF POLYURETHANES
    Publication number: 20210269834
    Abstract: The present invention relates to new urethanases for the enzymatic breakdown of polyurethanes and to an enzymatic process for the complete breakdown of polyurethanes into defined monomers.
    Type: Application
    Filed: June 18, 2019
    Publication date: September 2, 2021
    Inventors: Natalie BITTNER, Hartmut NEFZGER, Gesa BEHNKEN, Gernot JÄGER, Swantje BEHNKEN, Lukas REISKY