Patents by Inventor Juergen Mohrbutter

Juergen Mohrbutter 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: 20200369792
    Abstract: A process for the preparation of ethylene homopolymers or copolymers in a facility having a high-pressure tubular reactor and a preheater, wherein a reaction fluid introduced into the reactor at a reactor inlet is heated in the preheater and the average velocity of the reaction fluid in the preheater is lower than the average velocity of the reaction fluid in the tubular reactor and the ratio of the average velocity in the tubular reactor to the average velocity of the reaction fluid in the preheater is in the range from 1.5 to 5.
    Type: Application
    Filed: August 16, 2018
    Publication date: November 26, 2020
    Applicant: Basell Polyolefine GmbH
    Inventors: Christoph Wolf, Dieter Littmann, Michael Deuerling, Andre-Armand Finette, Danir Khayrullin, Juergen Mohrbutter
  • Patent number: 10626195
    Abstract: A process for polymerizing ethylene to obtain an ethylene-based polymer in a plant, wherein the plant includes a reactor in fluid communication with a recycle connection, wherein the process includes a polymerization phase, a partial shutdown phase, and the steps of reducing the pressure in the reactor for entering into the partial shutdown phase from the polymerization phase; and increasing the pressure in the reactor for exiting from the partial shutdown phase and re-entering the polymerization phase.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: April 21, 2020
    Assignee: Basell Polyolefine GmbH
    Inventors: Erich Neumann, Sven Wolfram, Christoph Wolf, Juergen Mohrbutter, Dieter Littmann
  • Publication number: 20190338053
    Abstract: A process for polymerizing ethylene to obtain an ethylene-based polymer in a plant, wherein the plant includes a reactor in fluid communication with a recycle connection, wherein the process includes a polymerization phase, a partial shutdown phase, and the steps of reducing the pressure in the reactor for entering into the partial shutdown phase from the polymerization phase; and increasing the pressure in the reactor for exiting from the partial shutdown phase and re-entering the polymerization phase.
    Type: Application
    Filed: November 16, 2016
    Publication date: November 7, 2019
    Applicant: Basell Polyolefine GmbH
    Inventors: Erich NEUMANN, Sven WOLFRAM, Christoph WOLF, Juergen MOHRBUTTER, Dieter LITTMANN
  • Patent number: 10005862
    Abstract: Process for copolymerizing ethylene and esters of vinyl alcohol in the presence of free-radical polymerization initiators at pressures in the range of from 110 MPa to 500 MPa and temperatures in the range of from 100° C. to 350° C. in a continuously operated polymerization apparatus comprising a polymerization reactor and one or more compressors, which compress the monomer mixture fed to the polymerization reactor to the polymerization pressure, wherein the monomer mixture is compressed by a sequence of compression stages in which the compressed gas mixture is cooled after each compression stage and the fraction of the monomer mixture, which is liquid after this cooling, is separated off and returned to the polymerization apparatus in liquid form, and wherein at least a part of the liquid fractions obtained after compressing the monomer mixture in the respective compression stage to a pressure of from 0.2 MPa to 10 MPa is purified before being returned to the polymerization process.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: June 26, 2018
    Assignee: Basell Polyolefine GmbH
    Inventors: Andre-Armand Finette, Christoph Wolf, Danir Khayrullin, Giulia Mei, Juergen Mohrbutter, Dieter Littmann
  • Patent number: 9931608
    Abstract: A process for separating polymeric and gaseous components of a polymer-monomer mixture at a pressure of from 0.12 MPa to 0.6 MPa and a temperature of from 120° C. to 300° C. in a separation vessel is provided. The separation vessel has a vertically arranged cylindrical shape with a ratio of length to diameter L/D of from 0.6 to 10 and an inlet pipe capable of introducing the polymer-monomer mixture into the separation vessel which the inlet pipe extends vertically from the top of the separation vessel into the separation vessel. Further a process for preparing ethylene homopolymers or copolymers from ethylenically unsaturated monomers in the presence of free-radical polymerization initiators at temperatures from 100° C. to 350° C. and pressures in the range of from 110 MPa to 500 MPa comprising such a process for separating a polymer-monomer mixture is provided.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: April 3, 2018
    Assignee: Basell Polyolefine GmbH
    Inventors: Dieter Littmann, Georg Groos, Andre-Armand Finette, Michael Deuerling, Sven Wolfram, Juergen Mohrbutter, Danir Khayrullin, Claudio Fibla, Christoph Wolf
  • Publication number: 20170348658
    Abstract: A process for separating polymeric and gaseous components of a polymer-monomer mixture at a pressure of from 0.12 MPa to 0.6 MPa and a temperature of from 120° C. to 300° C. in a separation vessel is provided. The separation vessel has a vertically arranged cylindrical shape with a ratio of length to diameter L/D of from 0.6 to 10 and an inlet pipe capable of introducing the polymer-monomer mixture into the separation vessel which the inlet pipe extends vertically from the top of the separation vessel into the separation vessel. Further a process for preparing ethylene homopolymers or copolymers from ethylenically unsaturated monomers in the presence of free-radical polymerization initiators at temperatures from 100° C. to 350° C. and pressures in the range of from 110 MPa to 500 MPa comprising such a process for separating a polymer-monomer mixture is provided.
    Type: Application
    Filed: November 12, 2015
    Publication date: December 7, 2017
    Applicant: Basell Polyolefine GmbH
    Inventors: Dieter Littmann, Georg Groos, Andre-Armand Finette, Michael Deuerling, Sven Wolfram, Juergen Mohrbutter, Danir Khayrullin, Claudio Fibla, Christoph Wolf
  • Publication number: 20160289356
    Abstract: Process for copolymerizing ethylene and esters of vinyl alcohol in the presence of free-radical polymerization initiators at pressures in the range of from 110 MPa to 500 MPa and temperatures in the range of from 100° C. to 350° C. in a continuously operated polymerization apparatus comprising a polymerization reactor and one or more compressors, which compress the monomer mixture fed to the polymerization reactor to the polymerization pressure, wherein the monomer mixture is compressed by a sequence of compression stages in which the compressed gas mixture is cooled after each compression stage and the fraction of the monomer mixture, which is liquid after this cooling, is separated off and returned to the polymerization apparatus in liquid form, and wherein at least a part of the liquid fractions obtained after compressing the monomer mixture in the respective compression stage to a pressure of from 0.2 MPa to 10 MPa is purified before being returned to the polymerization process.
    Type: Application
    Filed: December 16, 2013
    Publication date: October 6, 2016
    Inventors: Andre-Armand Finette, Christoph Wolf, Danir Khayrullin, Giulia Mei, Juergen Mohrbutter, Dieter Littmann