Patents by Inventor Hans-Rüdiger Reeh

Hans-Rüdiger Reeh 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).

  • Methods to store transition metal organophosphorous ligand based catalysts
    Patent number: 10478812
    Abstract: The catalyst solution used in a hydroformylation process is prepared for storage by first reducing its acid concentration and/or water content, and then storing the solution under a blanket of syngas and/or an inert gas. Alternatively, or in addition to, the catalyst solution can be stored with an aqueous buffer comprising materials that will neutralize and/or absorb the acid species within the catalyst solution.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: November 19, 2019
    Assignees: Dow Technology Investments LLC, BASF SE
    Inventors: Thomas C. Eisenschmid, Michael C. Becker, Donald L. Campbell, Jr., Michael A. Brammer, Glenn A. Miller, Edward Adrian Lord, Jens Rudolph, Hans-Rüdiger Reeh
  • Mitigation of fouling in hydroformylation processes by water addition
    Patent number: 8884072
    Abstract: The extraction process for removing metal salts from an organic hydroformylation reaction fluid (“HRF”) prior to returning the HRF to a reaction zone of a hydroformylation process, the extraction process comprising the step of contacting the HRF with an aqueous buffer solution, is improved by contacting the HRF with water in addition to that present in the aqueous buffer solution, i.e., with added water.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: November 11, 2014
    Assignees: Dow Technology Investments LLC, BASF SE
    Inventors: Glenn A. Miller, Michael A. Brammer, Donald L. Campbell, Jr., Thomas C. Eisenschmid, Adrian Lord, Jens Rudolph, Hans-Rüdiger Reeh, Hans-Günter Thelen, Maximilian Walter
  • Methods to Store Transition Metal Organophosphorous Ligand Based Catalysts
    Publication number: 20140051568
    Abstract: The catalyst solution used in a hydroformylation process is prepared for storage by first reducing its acid concentration and/or water content, and then storing the solution under a blanket of syngas and/or an inert gas. Alternatively, or in addition to, the catalyst solution can be stored with an aqueous buffer comprising materials that will neutralize and/or absorb the acid species within the catalyst solution.
    Type: Application
    Filed: April 13, 2012
    Publication date: February 20, 2014
    Inventors: Thomas C. Eisenschmid, Michael C. Becker, Donald L. Campbell, JR., Michael A. Brammer, Glenn A. Miller, Edward Adrian Lord, Jens Rudolph, Hans-Rüdiger Reeh