Patents by Inventor Horst Zwick

Horst Zwick 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: 10457775
    Abstract: The invention relates to an efficient method for producing polyoxyalkylene polyols with equivalent molar masses between 9500 and 23000 g/mol from one or more H-functional starter compounds, and one or more alkylene oxides in the presence of a double metal cyanide catalyst, characterized in that the alkylene oxide metering rate is reduced once a calculated equivalent molar mass of between 8000 and 9500 g/mol is reached.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: October 29, 2019
    Assignee: Covestro Deutschland AG
    Inventors: Klaus Lorenz, Christian Steinlein, Horst Zwick, Markus Bodenmüller, Stephan Eckelmann, Friedhelm Baer
  • Patent number: 10208162
    Abstract: The present invention relates to a method for producing polyether carbonate polyols by addition of one or more alkylene oxides and carbon dioxide to one or more H-functional starter substances in the presence of at least one DMC catalyst, in which the reaction is conducted in a main reactor (8) and a tubular reactor (11, 17) connected as a post reactor downstream thereof, wherein the method is characterized in that at the outlet (13) of the tubular reactor (11, 17) a temperature is set that is at least 10° C. above the temperature in the inside of the main reactor (8). The invention further relates to a device for carrying out said method.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: February 19, 2019
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Stefanie Braun, Horst Zwick, Matthias Wohak, Jörg Hofmann, Aurel Wolf, Michael Traving, Rolf Bachmann
  • Publication number: 20180244842
    Abstract: The invention relates to an efficient method for producing polyoxyalkylene polyols with equivalent molar masses between 9500 and 23000 g/mol from one or more H-functional starter compounds, and one or more alkylene oxides in the presence of a double metal cyanide catalyst, characterised in that the alkylene oxide metering rate is reduced once a calculated equivalent molar mass of between 8000 and 9500 g/mol is reached.
    Type: Application
    Filed: August 23, 2016
    Publication date: August 30, 2018
    Inventors: Klaus Lorenz, Christian Steinlein, Horst Zwick, Markus Bodenmüller, Stephan Eckelmann, Friedhelm Baer
  • Publication number: 20170198092
    Abstract: The present invention relates to a method for producing polyether carbonate polyols by addition of one or more alkylene oxides and carbon dioxide to one or more H-functional starter substances in the presence of at least one DMC catalyst, in which the reaction is conducted in a main reactor (8) and a tubular reactor (11, 17) connected as a post reactor downstream thereof, wherein the method is characterized in that at the outlet (13) of the tubular reactor (11, 17) a temperature is set that is at least 10° C. above the temperature in the inside of the main reactor (8). The invention further relates to a device for carrying out said method.
    Type: Application
    Filed: June 30, 2015
    Publication date: July 13, 2017
    Inventors: Stefanie Braun, Horst Zwick, Matthias Wohak, Jörg Hofmann, Aurel Wolf, Michael Traving, Rolf Bachmann
  • Patent number: 9139691
    Abstract: The invention relates to a process for the preparation of polyether polyols with equivalent molecular weights of from 8,000 to 20,000 g/mol from one or more H-functional starter compounds and one or more alkylene oxides in the presence of a double metal cyanide catalyst, characterized in that the alkylene oxides are metered into the reactor in the course of from 15 to 23 h.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: September 22, 2015
    Assignee: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Klaus Lorenz, Jörg Hofmann, Horst Zwick, Christian Steinlein, Edward Browne
  • Publication number: 20140142344
    Abstract: The invention relates to a process for the preparation of polyether polyols with equivalent molecular weights of from 8,000 to 20,000 g/mol from one or more H-functional starter compounds and one or more alkylene oxides in the presence of a double metal cyanide catalyst, characterized in that the alkylene oxides are metered into the reactor in the course of from 15 to 23 h.
    Type: Application
    Filed: June 26, 2012
    Publication date: May 22, 2014
    Applicant: BAYER INTELLECTUAL ROPERTY GMBH
    Inventors: Klaus Lorenz, Jörg Hofmann, Horst Zwick, Christian Steinlein, Edward Browne
  • Patent number: 6576687
    Abstract: The invention relates to a novel process for the preparation of polycondensate solutions based on polyamidoamine/epichlorohydrin resins that gives products having a very low content of organic chlorine compounds, in particular a 1,3-dichlorophenol-2-propanol content of <0.1%, in combination with high activity and good shelf-life.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: June 10, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl-Rudolf Gassen, Joachim König, Karlheinrich Meisel, Fritz Puchner, Jürgen Reiners, Horst Zwick
  • Patent number: 6486361
    Abstract: The invention relates to a process for the preparation of polyether polyols by means of double metal cyanide (DMC) catalysts, in which the induction phase is shortened markedly. By continuous dispensing of an alkylene oxide into the starter-catalyst mixture it is possible to achieve a substantial shortening of the induction phase by comparison with the batch-wise activation.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: November 26, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Stephan Ehlers, Jörg Hofmann, Manfred Dietrich, Pramod Gupta, Christian Steinlein, Horst Zwick