Patents by Inventor Yvonne Dienes

Yvonne Dienes 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 activating double metal cyanide catalysts for the production of polyether carbonate polyols
    Patent number: 9309356
    Abstract: The present invention relates to a process for the activation of double metal cyanide (DMC) catalysts with heterocumulenes for the preparation of polyether carbonate polyols by catalytic copolymerization of carbon dioxide (CO2) with alkylene oxides in the presence of one or more H-functional starter substances, and to a process for the preparation of polyether carbonate polyols from one or more H-functional starter substances, one or more alkylene oxides and carbon dioxide in the presence of a double metal cyanide catalyst, characterized in that (?) under an inert gas atmosphere, under an atmosphere of an inert gas/carbon dioxide mixture or under a pure carbon dioxide atmosphere, at temperatures of from 90 to 150° C., the DMC catalyst is mixed with a heterocumulene and H-functional starter substance, (?) alkylene oxide is added at temperatures of from 100 to 150° C.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: April 12, 2016
    Assignee: Bayer Intellectual Property GmbH
    Inventors: Thomas Ernst Müller, Christoph Gürtler, Yvonne Dienes, Julien Barruet, Burkhard Köhler, Walter Leitner
  • Method for producing polyetherester carbonate polyols
    Patent number: 9296859
    Abstract: The present invention relates to a method for producing polyetherester carbonate polyols by means of catalytic addition of carbon dioxide, alkylene oxides and cyclic anhydrides to H-functional starter compounds in the presence of double metal cyanide (DMC) catalysts.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: March 29, 2016
    Assignee: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Christoph Guertler, Thoams Ernst Mueller, Anthony Kermagoret, Yvonne Dienes, Julien Barruet, Aurel Wolf, Stefan Grasser
  • Method for producing polycarbonate polyols by the immortal polymerization of cyclic carbonates
    Patent number: 9260562
    Abstract: The invention relates to a process for the preparation of polycarbonate polyols, characterized in that cyclic carbonates are polymerized in the presence of DMC catalysts and chain-transfer agents consisting of polyether carbonate polyols.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: February 16, 2016
    Assignee: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Thomas Ernst Müller, Christoph Gürtler, Anthony Kermagoret, Yvonne Dienes, Igor Busygin, Burkhard Köhler, Walter Leitner, Ganna Lyashenko
  • METHOD FOR PRODUCING POLYETHERESTER CARBONATE POLYOLS
    Publication number: 20140329987
    Abstract: The present invention relates to a method for producing polyetherester carbonate polyols by means of catalytic addition of carbon dioxide, alkylene oxides and cyclic anhydrides to H-functional starter compounds in the presence of double metal cyanide (DMC) catalysts.
    Type: Application
    Filed: December 10, 2012
    Publication date: November 6, 2014
    Inventors: Christoph Gürtler, Thomas Ernst Müller, Anthony Kermagoret, Yvonne Dienes, Julien Barruet, Aurel Wolf, Stefan Grasser
  • METHOD FOR ACTIVATING DOUBLE METAL CYANIDE CATALYSTS FOR THE PRODUCTION OF POLYETHER CARBONATE POLYOLS
    Publication number: 20140221602
    Abstract: The present invention relates to a process for the activation of double metal cyanide (DMC) catalysts with heterocumulenes for the preparation of polyether carbonate polyols by catalytic copolymerization of carbon dioxide (CO2) with alkylene oxides in the presence of one or more H-functional starter substances, and to a process for the preparation of polyether carbonate polyols from one or more H-functional starter substances, one or more alkylene oxides and carbon dioxide in the presence of a double metal cyanide catalyst, characterized in that (?) under an inert gas atmosphere, under an atmosphere of an inert gas/carbon dioxide mixture or under a pure carbon dioxide atmosphere, at temperatures of from 90 to 150° C., the DMC catalyst is mixed with a heterocumulene and H-functional starter substance, (?) alkylene oxide is added at temperatures of from 100 to 150° C.
    Type: Application
    Filed: July 16, 2012
    Publication date: August 7, 2014
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Thomas Ernst Müller, Christoph Gürtler, Yvonne Dienes, Julien Barruet, Burkhard Köhler, Walter Leitner
  • METHOD FOR PRODUCING POLYCARBONATE POLYOLS BY THE IMMORTAL POLYMERIZATION OF CYCLIC CARBONATES
    Publication number: 20140018517
    Abstract: The invention relates to a process for the preparation of polycarbonate polyols, characterised in that cyclic carbonates are polymerised in the presence of DMC catalysts and chain-transfer agents consisting of polyether carbonate polyols.
    Type: Application
    Filed: November 3, 2011
    Publication date: January 16, 2014
    Applicant: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Igor Busygin, Thomas Ernst Müller, Christoph Gürtler, Anthony Kermagoret, Yvonne Dienes, Igor Busygin, Burkhard Köhler, Walter Leitner