Patents by Inventor Daniel A. Hickman

Daniel A. Hickman 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).

  • Publication number: 20210363094
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol. The process comprises contacting in a reactor a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns, liquid and gaseous reactants flow downward in the reactor and wherein the continuous phase in the reactor is a gas which has no more than 7.5 mol % oxygen at reactor inlets.
    Type: Application
    Filed: June 25, 2018
    Publication date: November 25, 2021
    Inventors: Kirk W. Limbach, Dmitry A. Krapchetov, Daniel A. Hickman, Jeffrey Herron
  • Patent number: 10865179
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein oxygen concentration at a reactor outlet is from 1 to 7.5 mol % and wherein pH at a reactor outlet is no greater than 7.5.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: December 15, 2020
    Assignees: Dow Global Technologies, LLC, Rohm and Haas Company
    Inventors: Jeffrey Herron, Daniel J. Arriola, D. Wayne Blaylock, Wen-Sheng Lee, Victor Sussman, Daniel A. Hickman, Kirk W. Limbach
  • Patent number: 10829435
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol; said method comprising contacting in a reactor a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein pH at the reactor outlet is from 3 to 6.7.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: November 10, 2020
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Dmitry A. Krapchetov, James Elder, William G. Worley, Kirk W. Limbach, Daniel A. Hickman, Alexey Kirilin, Wen Sheng Lee, Victor Sussman
  • Patent number: 10829432
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns and at least 90 wt % of the noble metal is in the outer 70% of catalyst volume, and wherein oxygen concentration at a reactor outlet is from 0.5 to 7.5 mol %.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: November 10, 2020
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Kirk W. Limbach, Dmitry A. Krapchetov, Christopher D. Frick, Daniel A. Hickman, Jeffrey Herron, Kurt D. Olson, D. Wayne Blaylock, Victor Sussman, Wen-Sheng Lee
  • Patent number: 10829434
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns and average concentration of methacrolein is at least 15 wt %.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: November 10, 2020
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Dmitry A. Krapchetov, Kirk W. Limbach, Daniel A. Hickman, Andrew T. Heitsch, Victor Sussman, Wen Sheng Lee, Ramzy Shayib
  • Patent number: 10829431
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting in a reactor a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns, wherein oxygen concentration at a reactor outlet is from 0.5 to 7.5 mol % and wherein the reactor comprises a partition with the catalyst bed on a first side of the partition and with flow through the catalyst bed in a first direction and flow on a second side of the partition in an opposite direction.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: November 10, 2020
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Kirk W. Limbach, Dmitry A. Krapchetov, Christopher D. Frick, Daniel A. Hickman
  • Patent number: 10745341
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting in a tubular reactor having at least four zones a mixture comprising methacrolein, methanol, oxygen and a base with a catalyst bed of heterogeneous catalyst comprising a support and a noble metal, wherein reaction zones comprising catalyst beds alternate with mixing zones not comprising catalyst beds.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: August 18, 2020
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Dmitry A. Krapchetov, Kirk W. Limbach, Daniel A. Hickman, Jeffrey Herron, Kurt W. Olson, D. Wayne Blaylock
  • Publication number: 20200216381
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein oxygen concentration at a reactor outlet is from 1 to 7.5 mol % and wherein pH at a reactor outlet is no greater than 7.5.
    Type: Application
    Filed: September 12, 2018
    Publication date: July 9, 2020
    Inventors: Jeffrey Herron, Daniel J. Arriola, D. Wayne Blaylock, Wen Sheng Lee, Victor Sussman, Daniel A. Hickman, Kirk W. Limbach
  • Publication number: 20200199059
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting in a tubular reactor having at least four zones a mixture comprising methacrolein, methanol, oxygen and a base with a catalyst bed of heterogeneous catalyst comprising a support and a noble metal, wherein reaction zones comprising catalyst beds alternate with mixing zones not comprising catalyst beds.
    Type: Application
    Filed: June 25, 2018
    Publication date: June 25, 2020
    Inventors: Dmitry A. Krapchetov, Kirk W. Limbach, Daniel A. Hickman, Jeffrey Herron, Kurt W. Olson, D. Wayne Blaylock
  • Publication number: 20200172464
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns and at least 90 wt % of the noble metal is in the outer 70% of catalyst volume, and wherein oxygen concentration at a reactor outlet is from 0.5 to 7.5 mol %.
    Type: Application
    Filed: June 25, 2018
    Publication date: June 4, 2020
    Inventors: Kirk W. Limbach, Dmitry A. Krapchetov, Christopher D. Frick, Daniel A. Hickman, Jeffrey Herron, Kurt D. Olson, D. Wayne Blaylock, Victor Sussman, Wen Sheng Lee
  • Publication number: 20200171465
    Abstract: A method for preparing a heterogeneous catalyst. The method comprises steps of: (a) combining (i) a support, (ii) an aqueous solution of a noble metal compound and (iii) a C2-C18 thiol comprising at least one hydroxyl or carboxylic acid substituent; to form a wet particle and (b) removing water from the wet particle by drying followed by calcination to produce the catalyst.
    Type: Application
    Filed: June 25, 2018
    Publication date: June 4, 2020
    Inventors: Victor Sussman, Wen Sheng Lee, Jeffrey Herron, D. Wayne Blaylock, Daniel J. Arriola, Andrew T. Heitsch, Alexey Kirilin, Heidi Clements, Abrin L. Schmucker, Daniel A. Hickman
  • Publication number: 20200165185
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns and at least 90 wt % of the noble metal is in the outer 50% of catalyst volume. A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal; wherein said catalyst has an average diameter of at least 200 microns and average concentration of methacrolein is at least 15 wt %.
    Type: Application
    Filed: June 25, 2018
    Publication date: May 28, 2020
    Inventors: Dmitry A. Krapchetov, Kirk W. Limbach, Daniel A. Hickman, Andrew T. Heitsch, Victor Sussman, Wen Sheng Lee, Ramzy Shayib
  • Publication number: 20200157036
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol; said method comprising contacting in a reactor a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein pH at the reactor outlet is from 3 to 6.7.
    Type: Application
    Filed: June 25, 2018
    Publication date: May 21, 2020
    Applicants: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Dmitry A. Krapchetov, James Elder, William G. Worley, Kirk W. Limbach, Daniel A. Hickman, Alexey Kirilin, Wen Sheng Lee, Victor Sussman
  • Publication number: 20200148620
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting in a reactor a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns, wherein oxygen concentration at a reactor outlet is from 0.5 to 7.5 mol % and wherein the reactor comprises a partition with the catalyst bed on a first side of the partition and with flow through the catalyst bed in a first direction and flow on a second side of the partition in an opposite direction.
    Type: Application
    Filed: June 25, 2018
    Publication date: May 14, 2020
    Inventors: Kirk W. Limbach, Dmitry A. Krapchetov, Christopher D. Frick, Daniel A. Hickman
  • Patent number: 9745233
    Abstract: A process for converting tertiary halogenated hydrocarbons in a tertiary halogenated hydrocarbon-containing stream to a corresponding unhalogenated or less-halogenated unsaturated hydrocarbon product with the release of hydrogen halide involves contacting the tertiary halogenated hydrocarbon with a sorbent-type dehydrohalogenation catalyst in a reaction zone and optionally passing a stripping gas through the reaction zone to remove vapor phase reaction products from the reaction zone.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: August 29, 2017
    Assignee: Dow AgroSciences LLC
    Inventors: Michael Lee Trippeer, Timothy C. Frank, Patrick H. Au-Yeung, Jason L. Bronkema, Robin K. Johnston, Mukund R. Patel, Bruce S. Holden, Terrence McCabe, Daniel A. Hickman
  • Patent number: 9233908
    Abstract: The instant invention provides cycloaliphatic diamines and a method of making the same. The cycloaliphatic diamines according to the instant invention comprise the reaction product of one or more cycloaliphatic cyanoaldehydes selected from the group consisting of 1,3-cyanocyclohexane carboxaldehyde, 1,4-cyanocyclohexane carboxaldehyde, mixtures thereof, and combinations thereof, hydrogen, and ammonia fed into a continuous reductive amination reactor system; wherein the one or more cycloaliphatic cyanoaldehydes, hydrogen, and ammonia are contacted with each other in the presence of one or more heterogeneous metal based catalyst systems at a temperature in the range of from 80° C. to about 160° C. and a pressure in the range of from 700 to 3500 psig; and wherein one or more cycloaliphatic diamines are formed; and wherein said one or more cycloaliphatic diamines are selected from the group consisting of 1,3-bis(aminomethyl)cyclohexane, 1,4-bis(aminomethyl)cyclohexane, combinations thereof, and mixtures thereof.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: January 12, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Abraham D. Schuitman, Shawn D. Feist, Barry B. Fish, Daniel A. Hickman, Erich J. Molitor, Michael L. Tulchinsky
  • Publication number: 20150353453
    Abstract: A process for converting tertiary halogenated hydrocarbons in a tertiary halogenated hydrocarbon-containing stream to a corresponding unhalogenated or less-halogenated unsaturated hydrocarbon product with the release of hydrogen halide involves contacting the tertiary halogenated hydrocarbon with a sorbent-type dehydrohalogenation catalyst in a reaction zone and optionally passing a stripping gas through the reaction zone to remove vapor phase reaction products from the reaction zone.
    Type: Application
    Filed: July 28, 2015
    Publication date: December 10, 2015
    Inventors: Michael Lee Trippeer, Timothy C. Frank, Patrick H. Au-Yeung, Jason L. Bronkema, Robin K. Johnston, Mukund R. Patel, Bruce S. Holden, Terrence McCabe, Daniel A. Hickman
  • Patent number: 9187403
    Abstract: The instant invention provides a process for separating one or more aliphatic diamines from reductive amination reaction solvents and impurities, and aliphatic diamines obtained via such a process. The process for separating one or more aliphatic diamines from reductive amination reaction solvents and impurities according to the instant invention comprises the steps of: (1) feeding one or more cycloaliphatic cyanoaldehydes, hydrogen, ammonia, and optionally one or more solvents into a continuous reductive amination reactor system; (2) contacting said one or more cycloaliphatic cyanoaldehydes, hydrogen, and ammonia with each other in the presence of one or more heterogeneous metal based catalyst systems at a temperature in the range of from 80° C. to about 160° C.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: November 17, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Stacie Santhany, Patrick Ho Sing Au-Yeung, Gerald W. Dare, Shawn D. Feist, Barry B. Fish, Daniel A. Hickman, David Jean, Erich J. Molitor, Abraham D. Schuitman, Todd William Toyzan
  • Publication number: 20150321915
    Abstract: The present disclosure provides a process and a system for producing dichlorine (Cl2).
    Type: Application
    Filed: July 17, 2015
    Publication date: November 12, 2015
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Eric E. Stangland, Daniel A. Hickman, Mark E. Jones, Simon G. Podkolzin, Shawn D. Feist
  • Patent number: 9139500
    Abstract: A process for converting a tertiary halogenated hydrocarbons in a tertiary halogenated hydrocarbon-containing stream to a corresponding unhalogenated or less-halogenated unsaturated hydrocarbon product with the release of hydrogen halide involves contacting the tertiary halogenated hydrocarbon with a sorbent-type dehydrohalogenation catalyst in a reaction zone and optionally passing a stripping gas through the reaction zone to remove vapor phase reaction products from the reaction zone.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 22, 2015
    Assignee: Dow AgroSciences LLC
    Inventors: Michael Lee Trippeer, Timothy C. Frank, Patrick H. Au-Yeung, Jason L. Bronkema, Robin K. Johnston, Mukund R. Patel, Bruce S. Holden, Terrence McCabe, Daniel A. Hickman