Patents by Inventor Juergen Eiffler

Juergen Eiffler 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: 10189756
    Abstract: The present invention provides adiabatic plug flow reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors comprise one or more designs that minimize the production of by-products at a desired conversion.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: January 29, 2019
    Assignee: BLUE CUBE IP LLC
    Inventors: Max M. Tirtowidjojo, Hua Bai, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt F. Hirsekorn, Manfred Kokott, William J. Kruper, Thomas U. Luebbe, Thomas J. Parsons, Avani Maulik Patel, Marcus Wobser
  • Publication number: 20160347692
    Abstract: The present invention provides adiabatic plug flow reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors comprise one or more designs that minimize the production of by-products at a desired conversion.
    Type: Application
    Filed: July 7, 2016
    Publication date: December 1, 2016
    Inventors: Max M. Tirtowidjojo, Hua Bai, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt F. Hirsekorn, Manfred Kokott, William J. Kruper, Thomas U. Luebbe, Thomas J. Parsons, Avani Maulik Patel, Marcus Wobser
  • Patent number: 8933280
    Abstract: The present invention provides continuous, gas phase, free radical processes for the production of chlorinated and/or fluorinated propenes or higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes, wherein wherein at least a portion of any intermediate boiler by-products generated by the process are removed from the process.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: January 13, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Max Markus Tirtowidjojo, Patrick Ho-Sing Au-Yeung, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt Frederick Hirsekorn, Manfred Kokott, William J. Kruper, Jr., Thomas Ulrich Luebbe, Holger Meeman, Shirley Shaw Sexton, Peter Wenzel, Marcus Wobser
  • Patent number: 8926918
    Abstract: The present invention provides isothermal multitube reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors utilize a feed mixture inlet temperature at least 20° C. different from a desired reaction temperature.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: January 6, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Max Markus Tirtowidjojo, Hua Bai, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt Frederick Hirsekorn, Manfred Kokott, William J. Kruper, Jr., Thomas Ulrich Luebbe, Avani Maulik Patel, Shirley Shaw Sexton, Peter Wenzel, Marcus Wobser
  • Publication number: 20140031595
    Abstract: The present invention provides continuous, gas phase, free radical processes for the production of chlorinated and/or fluorinated propenes or higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes, wherein wherein at least a portion of any intermediate boiler by-products generated by the process are removed from the process
    Type: Application
    Filed: October 4, 2013
    Publication date: January 30, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES, LLC
    Inventors: Max Markus Tirtowidjojo, Patrick Ho-Sing Au-Yeung, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt Frederick Hirsekorn, Manfred Kokott, William J. Kruper, JR., Thomas Ulrich Luebbe, Holger Meeman, Shirley Shaw Sexton, Peter Wenzel, Marcus Wobser
  • Publication number: 20140010741
    Abstract: The present invention provides isothermal multitube reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors utilize a feed mixture inlet temperature at least 20° C. different from a desired reaction temperature.
    Type: Application
    Filed: September 11, 2013
    Publication date: January 9, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES, LLC
    Inventors: Max Markus Tirtowidjojo, Hua Bai, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt Frederick Hirsekorn, Manfred Kokott, William J. Kruper, Thomas Ulrich Luebbe, Avani Maulik Patel, Shirley Shaw Sexton, Peter Wenzel, Marcus Wobser
  • Patent number: 8581012
    Abstract: The present invention provides continuous, gas phase, free radical processes for the production of chlorinated and/or fluorinated propenes or higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes, wherein wherein at least a portion of any intermediate boiler by-products generated by the process are removed from the process.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: November 12, 2013
    Assignee: Dow Global Technologies, LLC
    Inventors: Max M. Tirtowidjojo, Patrick H. Au-Yeung, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt F. Hirsekorn, Manfred Kokott, William J. Kruper, Jr., Thomas U. Luebbe, Holger Meemann, Shirley S. Sexton, Peter Wenzel, Marcus Wobser
  • Patent number: 8581011
    Abstract: The present invention provides one-step processes for the production of chlorinated and/or fluorinated propenes. The processes provide good product yield with low, e.g., less than about 20%, or even less than 10%, concentrations of residues/by-products. Advantageously, the processes may be conducted at low temperatures than 500° C. so that energy savings are provided, and/or at higher pressures so that high throughputs may also be realized. The use of catalysts or initiators may provide additional enhancements to conversion rates and selectivity, as may adjustments to the molar ratio of the reactants.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: November 12, 2013
    Assignee: Dow Global Technologies, LLC
    Inventors: Max M. Tirtowidjojo, Debashis Chakraborty, Juergen Eiffler, Kurt F. Hirsekorn, William J. Kruper, Jr.
  • Patent number: 8558041
    Abstract: The present invention provides isothermal multitube reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors utilize a feed mixture inlet temperature at least 20° C. different from a desired reaction temperature.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: October 15, 2013
    Assignee: Dow Global Technologies, LLC
    Inventors: Max M. Tirtowidjojo, Hua Bai, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt F. Hirsekorn, Manfred Kokott, William J. Kruper, Jr., Thomas U. Luebbe, Avani M. Patel, Shirley S. Sexton, Peter Wenzel, Marcus Wobser
  • Patent number: 8258353
    Abstract: The present invention provides one-step processes for the production of chlorinated and/or fluorinated propenes. The processes provide good product yield with low, e.g., less than about 20%, or even less than 10%, concentrations of residues/by-products. Advantageously, the processes may be conducted at low temperatures relative to conventional processes, so that energy savings are provided, and/or at higher pressures so that high throughputs may also be realized. The use of catalysts may provide enhancements to conversion rates and selectivity over those seen in conventional processes, as may adjustments to the molar ratio of the reactants.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: September 4, 2012
    Assignee: Dow Global Technologies, LLC
    Inventors: William J. Kruper, Jr., Max M. Tirtowidjojo, Kurt F. Hirsekorn, Debashis Chakraborty, Juergen Eiffler
  • Publication number: 20110178343
    Abstract: The present invention provides one-step processes for the production of chlorinated and/or fluorinated propenes. The processes provide good product yield with low, e.g., less than about 20%, or even less than 10%, concentrations of residues/by-products. Advantageously, the processes may be conducted at low temperatures relative to conventional processes, so that energy savings are provided, and/or at higher pressures so that high throughputs may also be realized. The use of catalysts may provide enhancements to conversion rates and selectivity over those seen in conventional processes, as may adjustments to the molar ratio of the reactants.
    Type: Application
    Filed: April 20, 2010
    Publication date: July 21, 2011
    Applicant: DOW GLOBAL TECHNOLOGIES, INC.
    Inventors: William J. Kruper, JR., Max M. Tirtowidjojo, Kurt F. Hirsekorn, Debashis Chakraborty, Juergen Eiffler
  • Publication number: 20110087054
    Abstract: The present invention provides isothermal multitube reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors utilize a feed mixture inlet temperature at least 20° C. different from a desired reaction temperature.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Applicant: DOW GLOBAL TECHNOLOGIES
    Inventors: Max M. Tirtowidjojo, Hua Bai, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt F. Hirsekorn, Manfred Kokott, William J. Kruper, JR., Thomas U. Luebbe, Avani M. Patel, Shirley S. Sexton, Peter Wenzel, Marcus Wobser
  • Publication number: 20110087055
    Abstract: The present invention provides continuous, gas phase, free radical processes for the production of chlorinated and/or fluorinated propenes or higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes, wherein wherein at least a portion of any intermediate boiler by-products generated by the process are removed from the process
    Type: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Applicant: DOW GLOBAL TECHNOLOGIES
    Inventors: Max M. Tirtowidjojo, Patrick H. Au-Yeung, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt F. Hirsekorn, Manfred Kokott, William J. Kruper, JR., Thomas U. Luebbe, Holger Meeman, Shirley S. Sexton, Peter Wenzel, Marcus Wobser
  • Publication number: 20110087056
    Abstract: The present invention provides adiabatic plug flow reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors comprise one or more designs that minimize the production of by-products at a desired conversion.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Applicant: DOW GLOBAL TECHNOLOGIES
    Inventors: Max M. Tirtowidjojo, Hua Bai, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt F. Hirsekorn, Manfred Kokott, William J. Kruper, JR., Thomas U. Luebbe, Thomas J. Parsons, Avani Maulik Patel, Marcus Wobser
  • Publication number: 20110083955
    Abstract: The present invention provides one-step processes for the production of chlorinated and/or fluorinated propenes. The processes provide good product yield with low, e.g., less than about 20%, or even less than 10%, concentrations of residues/by-products. Advantageously, the processes may be conducted at low temperatures than 500° C. so that energy savings are provided, and/or at higher pressures so that high throughputs may also be realized. The use of catalysts or initiators may provide additional enhancements to conversion rates and selectivity, as may adjustments to the molar ratio of the reactants.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Applicant: DOW GLOBAL TECHNOLOGIES, INC
    Inventors: Max M. Tirtowidjojo, Debashis Chakraborty, Juergen Eiffler, Kurt F. Hirsekorn, William J. Kruper, JR.
  • Patent number: 6528593
    Abstract: A process for the preparation of a copolymer comprises reacting in an aqueous medium at a temperature of from 25° C. to 100° C. in the presence of from 1.0-25 weight percent based on the total weight of a), b) and c) of a free-radical initiator, a) at least one monomer selected from the group consisting of &agr;,&bgr;-unsaturated monocarboxylic acids and their salts, &agr;,&bgr;-unsaturated dicarboxylic acids, their half-esters free of polyoxyalkylene side chains and their salts, b) at least on olefinic monomer selected from the group consisting of aromatic vinyl compounds, vinyl ethers, vinyl esters, nitrogen-containing vinyl compounds and aliphatic olefins, and c) from 0.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: March 4, 2003
    Assignee: The Dow Chemical Company
    Inventors: Juergen Eiffler, Christoph Froehlich, Kerstin Stranimaier
  • Patent number: 6310159
    Abstract: The present invention refers to a paper surface sizing composition comprising a copolymer having: a) structural units derived from ethylenically unsaturated hydrocarbons; structural units derived from monomers selected from esters of ethylenically unsaturated mono-carboxylic acids, half-esters of ethylenically unsaturated dicarboxylic acids, allylethers and vinylethers and mixtures thereof; optionally c) structural units derived from ethylenically unsaturated monomers selected from monocarboxylic acids as well as salts and amides thereof, dicarboxylic acids as well as salts, amides and half-amides thereof, and cyclic anhydrides and imides of dicarboxylic acids and mixtures thereof; and optionally d) structural units derived from alkyl or amino-substituted alkyl acrylates or methacrylates with the proviso, that if no structural units c) are present, the structural units b) are derived from monomers selected from half esters of ethylenically unsaturated dicarboxylic acids.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: October 30, 2001
    Assignee: The Dow Chemical Company
    Inventors: Jürgen Eiffler, Roger Carlsson, Jürgen Hermanns, Stephen Oliver
  • Patent number: 6225436
    Abstract: Disclosed is a polycarbonate composition and process from making same, wherein introduction of a chain terminator and an acyl halide other than phosgene is after at least 25 percent of the hydroxyl groups in the dihydric phenol have been converted to chloroformate groups.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: May 1, 2001
    Assignee: The Dow Chemical Company
    Inventors: Juergen Eiffler, Guenter A. Jueptner
  • Patent number: 5362783
    Abstract: A stabilizer composition containsa) a phosphine of the general formulaPR.sup.1 R.sup.2 R.sup.3 (I)wherein R.sup.1, R.sup.2 and R.sup.3 independently from each other represent an alkyl, cycloalkyl, aryl or alkyl-aryl group or an aryl group which is substituted at the aromatic ring with one or more halogens and/or one or more alkyl, hydroxy or alkoxy groups andb) a hindered phenol.The stabilizer composition is useful for stabilizing thermoplastic polymers against discoloration. Optionally an organic light diffuser mixed with the thermoplastic polymer. The stabilizer composition is particularly useful for stabilizing polycarbonate compositions.
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: November 8, 1994
    Assignee: The Dow Chemical Company
    Inventors: Juergen Eiffler, Robin J. Lee