Patents by Inventor Ralf Schellen

Ralf Schellen 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).

  • Method for phosgenating compounds containing hydroxyl, thiol, amino and/or formamide groups
    Patent number: 10105675
    Abstract: The invention relates to a method particularly for reacting phosgene with compounds that contain hydroxyl, thiol, amino and/or formamide groups, comprising the steps of: (I) providing a reactor which has a first reaction chamber (300, 310, 320, 330, 340, 350) and a second reaction chamber (200, 210, 220, 230, 240, 250, 260), the first and the second reaction chambers being separated from one another by means of a porous carbon membrane (100, 110, 120, 130, 140, 150); (II) providing carbon monoxide and chlorine in the first reaction chamber; and simultaneously (III) providing a compound containing hydroxyl, thiol, amino and/or formamide groups in the second reaction chamber. The porous carbon membrane is configured to catalyze the reaction of carbon monoxide and chlorine to obtain phosgene, and to allow this formed phosgene to pass into the second reaction chamber. The invention also relates to a reactor that is suitable for carrying out the claimed method.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: October 23, 2018
    Assignee: BAYER AKTIENGESELLSCHAFT
    Inventors: Leslaw Mleczko, Aurel Wolf, Ralf Schellen, Konstantinos Metaxas, Jens Stefan Roggan
  • METHOD FOR PHOSGENATING COMPOUNDS CONTAINING HYDROXYL, THIOL, AMINO AND/OR FORMAMIDE GROUPS
    Publication number: 20170274346
    Abstract: The invention relates to a method particularly for reacting phosgene with compounds that contain hydroxyl, thiol, amino and/or formamide groups, comprising the steps of: (I) providing a reactor which has a first reaction chamber (300, 310, 320, 330, 340, 350) and a second reaction chamber (200, 210, 220, 230, 240, 250, 260), the first and the second reaction chambers being separated from one another by means of a porous carbon membrane (100, 110, 120, 130, 140, 150); (II) providing carbon monoxide and chlorine in the first reaction chamber; and simultaneously (III) providing a compound containing hydroxyl, thiol, amino and/or formamide groups in the second reaction chamber. The porous carbon membrane is configured to catalyse the reaction of carbon monoxide and chlorine to obtain phosgene, and to allow this formed phosgene to pass into the second reaction chamber. The invention also relates to a reactor that is suitable for carrying out the claimed method.
    Type: Application
    Filed: August 17, 2015
    Publication date: September 28, 2017
    Inventors: LESLAW MLECZKO, AUREL WOLF, RALF SCHELLEN, KONSTANTINOS METAXAS, JENS STEFAN ROGGAN
  • Additive for polymers and process for preparation thereof
    Patent number: 8163828
    Abstract: The invention concerns a process for preparing an additive for polymers, the additive itself and the use of the additive for improving the surface properties of polymers.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: April 24, 2012
    Assignee: Sachtleben Chemie GmbH
    Inventors: Peter Ebbinghaus, Bernhard Becker, Jens Kohnert, Jörg Hocken, Ralf Schellen, Bernd-Michael Klein, Friedrich Müller, Sonja Grothe, Bernd Rohe
  • Additive for Polymers and Process for Preparation Thereof
    Publication number: 20100267878
    Abstract: The invention concerns a process for preparing an additive for polymers, the additive itself and the use of the additive for improving the surface properties of polymers.
    Type: Application
    Filed: October 20, 2008
    Publication date: October 21, 2010
    Applicant: SACHTLEBEN CHEMIE GMBH
    Inventors: Peter Ebbinghaus, Bernhard Becker, Jörg Hocken, Ralf Schellen, Bernd-Michael Klein, Friedrich Müller, Sonja Grothe, Bernd Rohe, Jens Kohnert
  • Polymeric Materials, Which Contain Inorganic Solids, and Methods for the Production Thereof
    Publication number: 20070249773
    Abstract: A polymeric material contains particulate TiO2 and at least one other particulate inorganic substance that has a lower crystal hardness than TiO2 in the anatase phase. The polymeric material can exist in the form of synthetic fibers or in the form of films or shaped parts.
    Type: Application
    Filed: June 28, 2005
    Publication date: October 25, 2007
    Inventors: Bernhard Becker, Jurgen Kastner, Franz Meyers, Ralf Schellen, Heiner Schulte, Michael Wedler