Patents by Inventor KONSTANTINOS METAXAS

KONSTANTINOS METAXAS 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: 20210371364
    Abstract: The present inventions relates to the preparation of 3,3,5-trimethylcyclohexylidene bisphenol. Especially, the present invention relates to the preparation of 3,3,5-trimethylcyclohexylidene bisphenol from 3,3,5-trimethylcyclohexanone and phenol in the presence of a gaseous acidic catalyst. The preparation is preferably conducted continuously.
    Type: Application
    Filed: October 4, 2019
    Publication date: December 2, 2021
    Inventors: Kristof HEYLEN, Johan VANDEN EYNDE, Erik SLUYTS, Konstantinos METAXAS, Franz BEGGEL, Michael TRAVING
  • Publication number: 20180361349
    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 28, 2018
    Publication date: December 20, 2018
    Inventors: Leslaw MLECZKO, Aurel WOLF, Ralph SCHELLEN, Konstantinos METAXAS, Jens Stefan ROGGAN
  • Patent number: 10118145
    Abstract: A method of reacting phosgene with a second compound containing one or more of hydroxyl, thil, amino and/or formamide groups, wherein phosgene has a GHS hazard identification of GHS06 and is obtainable from the reaction of carbon monoxide and chlorine and wherein the second compound is capable of a chemical reaction with phosgene is provided.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: November 6, 2018
    Assignee: BAYER AKTIENGESELLSCHAFT
    Inventors: Jens Stefan Roggan, Leslaw Mleczko, Konstantinos Metaxas, Michael Gottfried, Ilja Peckermann, Stephan Schubert, Ekkehard Barth
  • 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
  • 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
  • Publication number: 20170274341
    Abstract: A method of reacting a first compound with a second compound, wherein the first compound has a GHS hazard identification of GHS06 and is obtainable from the reaction of at least one first fluid precursor compound and one second fluid precursor compound and wherein the second compound is capable of a chemical reaction with the first compound is provided
    Type: Application
    Filed: August 18, 2015
    Publication date: September 28, 2017
    Inventors: JENS STEFAN ROGGAN, LESLAW MLECZKO, KONSTANTINOS METAXAS, MICHAEL GOTTFRIED, IIJA PECKERMANN, STEPHAN SCHUBERT, EKKEHARD BARTH