Patents by Inventor Dirk Fridag

Dirk Fridag 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).

  • Patent number: 11840506
    Abstract: A process for preparing C5 aldehydes involves hydroformylation of butenes with synthesis gas in the presence of a homogeneous catalyst system and a solvent. It is a feature of the process that the aldehyde concentration in the reaction mixture is limited.
    Type: Grant
    Filed: May 2, 2023
    Date of Patent: December 12, 2023
    Assignee: Evonik Operations GmbH
    Inventors: Dirk Fridag, Johannes Knossalla, Alexander Brächer, Peter Kucmierczyk, Anna Chiara Sale, Robert Franke, Ana Markovic
  • Patent number: 11834399
    Abstract: A process can be used for preparing aldehydes from C2 to C20 olefins with a subsequent thermal separation for removal of the aldehyde formed. The process involves a membrane separation, which is preceded by performance of a gas exchange by which the proportion of the partial pressure represented by carbon monoxide or hydrogen is increased in order to reduce catalyst losses.
    Type: Grant
    Filed: February 6, 2023
    Date of Patent: December 5, 2023
    Assignee: Evonik Operations GmbH
    Inventors: Alexander Brächer, Ana Markovic, Anna Chiara Sale, Dirk Fridag, Johannes Knossalla, Peter Kucmierczyk, Robert Franke
  • Patent number: 11820739
    Abstract: A process for preparing aldehydes by a homogeneously catalysed hydroformylation of C4 to C20 olefins involves withdrawing a biphasic stream (liquid/gaseous) and expanding in two stages. Before, between, or after the two stages, the liquid phase is cooled. Only after expansion and cooling is the homogeneously dissolved rhodium catalyst system separated from the residual stream.
    Type: Grant
    Filed: November 15, 2022
    Date of Patent: November 21, 2023
    Assignee: Evonik Operations GmbH
    Inventors: Ana Markovic, Frank Geilen, Alexander Brächer, Benedikt Dercks, Stefan Drees, Tonia Weber, Robert Franke, Dirk Fridag
  • Publication number: 20230357117
    Abstract: A process for preparing C5 aldehydes involves hydroformylation of butenes with synthesis gas in the presence of a homogeneous catalyst system and a solvent. It is a feature of the process that the aldehyde concentration in the reaction mixture is limited.
    Type: Application
    Filed: May 2, 2023
    Publication date: November 9, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Dirk Fridag, Johannes Knossalla, Alexander Brächer, Peter Kucmierczyk, Anna Chiara Sale, Robert Franke, Ana Markovic
  • Publication number: 20230348356
    Abstract: The invention relates to compounds of formula (I) where R1, R2, R3, R4 are each independently selected from —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —(C6-C20)-aryl, —(C3-C20)-heteroaryl; at least one of the R1, R2, R3, R4 radicals is a —(C3-C20)-heteroaryl radical; and R1, R2, R3, R4, if they are —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —(C6-C20)-aryl or —(C3-C20)-heteroaryl, may each independently be substituted by one or more substituents selected from —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —O—(C1-C12)-alkyl, —O—(C1-C12)-alkyl-(C6-C20)-aryl, —O—(C3-C12)-cycloalkyl, —S—(C1-C12)-alkyl, —S—(C3-C12)-cycloalkyl, —COO—(C1-C12)-alkyl, —COO—(C3-C12)-cycloalkyl, —CONH—(C1-C12)-alkyl, —CONH—(C3-C12)-cycloalkyl, —CO—(C1-C12)-alkyl, —CO—(C3-C12)-cycloalkyl, —N—[(C1-C12)-alkyl]2, —(C6-C20)-aryl, —(C6-C20)-aryl-(C1-C12)-alkyl, —(C6-C20)-aryl-O—(C1-C12)-alkyl, —(C3-C20)-heteroaryl, —(C3-C20)-heteroaryl-(C1-C12)-alkyl, —(C3-C20)-heteroar
    Type: Application
    Filed: July 7, 2023
    Publication date: November 2, 2023
    Applicant: EVONIK OPERATIONS GMBH
    Inventors: Kaiwu DONG, Xiangjie FANG, Helfried NEUMANN, Ralf JACKSTELL, Matthias BELLER, Robert FRANKE, Dieter HESS, Katrin Marie DYBALLA, Dirk Fridag, Frank GEILEN
  • Patent number: 11773041
    Abstract: A process for preparing aldehydes by a homogeneously catalyzed hydroformylation of C4 to C20 olefins involves withdrawing a biphasic stream (liquid/gaseous) and expanding in two stages. Before, between, or after the two stages, the liquid phase is cooled. Only after expansion and cooling is the homogeneously dissolved rhodium catalyst system separated from the residual stream in a three-stage removal.
    Type: Grant
    Filed: November 16, 2022
    Date of Patent: October 3, 2023
    Assignee: Evonik Operations GmbH
    Inventors: Frank Geilen, Alexander Brächer, Stefan Drees, Benedikt Dereks, Robert Franke, Ana Markovic, Armin Matthias Rix, Martin Oldemeyer, Dirk Fridag
  • Patent number: 11739106
    Abstract: Bisphosphite ligands based on benzopinacol with an open outer unit, and the use thereof in hydroformylation.
    Type: Grant
    Filed: March 16, 2022
    Date of Patent: August 29, 2023
    Assignee: EVONIK OPERATIONS GMBH
    Inventors: Anna Chiara Sale, Robert Franke, Alexander Brächer, Dirk Fridag, Ana Markovic, Peter Kucmierczyk, Johannes Knossalla, Detlef Selent, Armin Börner, Kerstin Romeike
  • Patent number: 11739108
    Abstract: Diphosphites having an open, 2,4-methylated outer unit and use thereof in hydroformylation.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: August 29, 2023
    Assignee: EVONIK OPERATIONS GMBH
    Inventors: Anna Chiara Sale, Robert Franke, Alexander Brächer, Dirk Fridag, Johannes Knossalla
  • Publication number: 20230250040
    Abstract: A process can be used for preparing aldehydes from C2 to C20 olefins with a subsequent thermal separation for removal of the aldehyde formed. The process involves a membrane separation, which is preceded by performance of a gas exchange by which the proportion of the partial pressure represented by carbon monoxide or hydrogen is increased in order to reduce catalyst losses.
    Type: Application
    Filed: February 6, 2023
    Publication date: August 10, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Alexander BRÄCHER, Ana Markovic, Anna Chiara Sale, Dirk Fridag, Johannes Knossalla, Peter Kucmierczyk, Robert Franke
  • Patent number: 11702435
    Abstract: Bisphosphite ligands based on benzopinacol, and the use thereof in hydroformylation.
    Type: Grant
    Filed: March 16, 2022
    Date of Patent: July 18, 2023
    Assignee: EVONIK OPERATIONS GMBH
    Inventors: Anna Chiara Sale, Robert Franke, Alexander Brächer, Dirk Fridag, Ana Markovic, Peter Kucmierczyk, Johannes Knossalla, Detlef Selent, Amin Borner, Kerstin Romeike
  • Publication number: 20230192486
    Abstract: A process for providing a carbon monoxide-containing stream involves a separation of synthesis gas into a hydrogen-rich gas stream and a carbon monoxide-rich gas stream containing carbon monoxide to an extent of 85% by volume or more. The separation is effected in an arrangement composed of three membrane separation stages. Prior to the performance of the membrane separation, the synthesis gas is pretreated for removal of secondary components present in the synthesis gas.
    Type: Application
    Filed: December 16, 2022
    Publication date: June 22, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Robert Franke, Peter Kreis, Dirk Fridag
  • Publication number: 20230159423
    Abstract: A process for preparing aldehydes by a homogeneously catalysed hydroformylation of C4 to C20 olefins involves withdrawing a biphasic stream (liquid/gaseous) and expanding in two stages. Before, between, or after the two stages, the liquid phase is cooled. Only after expansion and cooling is the homogeneously dissolved rhodium catalyst system separated from the residual stream.
    Type: Application
    Filed: November 15, 2022
    Publication date: May 25, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Ana MARKOVIC, Frank Geilen, Alexander Brächer, Benedikt Dercks, Stefan Drees, Tonia Weber, Robert Franke, Dirk Fridag
  • Publication number: 20230159425
    Abstract: A process for preparing aldehydes by a homogeneously catalyzed hydroformylation of C4 to C20 olefins involves withdrawing a biphasic stream (liquid/gaseous) and expanding in two stages. Before, between, or after the two stages, the liquid phase is cooled. Only after expansion and cooling is the homogeneously dissolved rhodium catalyst system separated from the residual stream in a three-stage removal.
    Type: Application
    Filed: November 16, 2022
    Publication date: May 25, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Frank Geilen, Alexander Brächer, Stefan Drees, Benedikt Dercks, Robert Franke, Ana Markovic, Armin Matthias Rix, Martin Oldemeyer, Dirk Fridag
  • Patent number: 11618760
    Abstract: Diphosphites having an open, 3-methylated outer unit and use thereof in hydroformylation.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: April 4, 2023
    Assignee: EVONIK OPERATIONS GMBH
    Inventors: Anna Chiara Sale, Robert Franke, Alexander Brächer, Dirk Fridag, Ana Markovic, Peter Kucmierczyk, Johannes Knossalla
  • Patent number: 11565991
    Abstract: Mixture of bisphosphites having an open and a closed outer unit and the use thereof as a catalyst mixture in hydroformylation.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: January 31, 2023
    Assignee: EVONIK OPERATIONS GMBH
    Inventors: Anna Chiara Sale, Robert Franke, Alexander Brächer, Dirk Fridag, Johannes Knossalla, Peter Kucmierczyk, Ana Markovic
  • Patent number: 11560396
    Abstract: Diphosphites having an open and a closed 2,4-methylated outer unit and use thereof in hydroformylation.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: January 24, 2023
    Assignee: EVONIK OPERATIONS GMBH
    Inventors: Robert Franke, Anna Chiara Sale, Alexander Brächer, Dirk Fridag, Ana Markovic, Peter Kucmierczyk, Johannes Knossalla
  • Publication number: 20220390332
    Abstract: An apparatus, for automated sampling from vessels that may be under a high pressure, is achieved by a specific construction with multiple multiport valves. A method of automated sampling can be used with the apparatus.
    Type: Application
    Filed: June 7, 2022
    Publication date: December 8, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Christian Reuter, Dirk Fridag, Georg Nordhoff, Sebastian Haumann, Alexander Brächer, Robert Franke, Dieter Hess
  • Publication number: 20220340511
    Abstract: Mixture of bisphosphites having an open and a closed outer unit and the use thereof as a catalyst mixture in hydroformylation.
    Type: Application
    Filed: April 12, 2022
    Publication date: October 27, 2022
    Applicant: EVONIK OPERATIONS GMBH
    Inventors: Anna Chiara SALE, Robert FRANKE, Alexander BRÄCHER, Dirk FRIDAG, Johannes KNOSSALLA, Peter KUCMIERCZYK, Ana MARKOVIC
  • Publication number: 20220340606
    Abstract: Diphosphites having an open and a closed 2,4-methylated outer unit and use thereof in hydroformylation.
    Type: Application
    Filed: April 12, 2022
    Publication date: October 27, 2022
    Applicant: EVONIK OPERATIONS GMBH
    Inventors: Robert FRANKE, Anna Chiara Sale, Alexander Brãcher, Dirk Fridag, Ana Markovic, Peter Kucmierczyk, Johannes Knossalla
  • Publication number: 20220332736
    Abstract: Diphosphites having an open, 3-methylated outer unit and use thereof in hydroformylation.
    Type: Application
    Filed: April 12, 2022
    Publication date: October 20, 2022
    Applicant: EVONIK OPERATIONS GMBH
    Inventors: Anna Chiara SALE, Robert FRANKE, Alexander BRÃCHER, Dirk FRIDAG, Ana MARKOVIC, Peter kUCMIERCZYK, Johannes KNOSSALLA