Patents by Inventor Erhard Michels

Erhard Michels 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: 20200308333
    Abstract: The present invention relates to polyurethane hybrid polymers and to a process for producing same.
    Type: Application
    Filed: December 14, 2018
    Publication date: October 1, 2020
    Inventors: Hans-Detlef Arntz, Koichi Kawamura, Gerlinde Koss-Nasser, Erhard Michels
  • Publication number: 20160297917
    Abstract: Lubricant composition comprising a dicarboxylic acid ester component which is selected from di-isononyladipate and di-(2-ethylhexyl) adipate, and ethylene-propylene copolymer, and a monocarboxylic acids ester.
    Type: Application
    Filed: December 2, 2014
    Publication date: October 13, 2016
    Inventors: Erhard MICHELS, Reinhard ALBERS, Stephanie VOGEL
  • Patent number: 9376564
    Abstract: The invention relates to polyurethane casting resins for producing polyurethane potting compounds, which can be obtained from a reaction mixture of polyisocyanates, polyepoxides, polyols, latent catalysts and optionally additives. The invention also relates to a method for producing said compounds.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: June 28, 2016
    Assignee: Covestro Deutschland AG
    Inventors: Florian Hupka, Marcel Schornstein, Dirk Wegener, Harald Rasselnberg, Erhard Michels
  • Publication number: 20150225566
    Abstract: The invention relates to polyurethane casting resins for producing polyurethane potting compounds, which can be obtained from a reaction mixture of polyisocyanates, polyepoxides, polyols, latent catalysts and optionally additives. The invention also relates to a method for producing said compounds.
    Type: Application
    Filed: August 16, 2013
    Publication date: August 13, 2015
    Inventors: Florian Hupka, Marcel Schornstein, Dirk Wegener, Harald Rasselnberg, Erhard Michels
  • Publication number: 20100280212
    Abstract: The present invention relates to polymer dispersions in polyester polyols, a process for producing them and their use for the production of polyurethanes, in particular microcellular polyurethanes. These polyester polyols have sulfur atoms and are free of olefinically unsaturated groups.
    Type: Application
    Filed: July 7, 2010
    Publication date: November 4, 2010
    Applicant: Bayer MaterialScience AG
    Inventors: Hartmut NEFZGER, Erika BAUER, Erhard MICHELS
  • Patent number: 7772321
    Abstract: The present invention relates to polymer dispersions in polyester polyols, a process for producing them and their use for the production of polyurethanes, in particular microcellular polyurethanes. These polyester polyols have sulfur atoms and are free of olefinically unsaturated groups.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: August 10, 2010
    Assignee: Bayer MaterialScience AG.
    Inventors: Hartmut Nefzger, Erika Bauer, Erhard Michels
  • Publication number: 20080319096
    Abstract: The invention relates to polymer-modified polyisocyanates and to polyurethanes prepared therefrom, and to their use in the production of polyurethane molded bodies. The polyisocyanates are modified with thermoplastic vinyl polymers having a number average molecular weight of from 15 to 90 kg/mol.
    Type: Application
    Filed: July 30, 2008
    Publication date: December 25, 2008
    Inventors: Eduard Mayer, Erhard Michels, Helmut Meyer, Klaus Pleiss
  • Patent number: 7091304
    Abstract: The present invention relates to a process for cleaning multi-product production plants for polyester polyols with a cleaning polyol. The cleaning polyol can be used as a raw material in the production of further polyols.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: August 15, 2006
    Assignee: Bayer Materialscience AG
    Inventors: Hartmut Nefzger, Gerhard Klein, Erhard Michels, Ulrich Boddenberg
  • Publication number: 20060135727
    Abstract: The present invention relates to polymer dispersions in polyester polyols, to a process for their preparation and to their use in the preparation of polyurethanes, and particularly microcellular polyurethanes. The polymer dispersions of the present invention comprise a polyester polyol containing structural units derived from succinic acid.
    Type: Application
    Filed: December 13, 2005
    Publication date: June 22, 2006
    Inventors: Hartmut Nefzger, Erika Bauer, Erhard Michels
  • Publication number: 20060058455
    Abstract: Polyurethane elastomers having improved behavior towards antistatic charge are produced by including an antistatic component in the polyurethane-forming reaction mixture. The antistatic component includes at least one quaternary alklyammonium monoalkylsulfate corresponding to a specified formula and at least one compound selected from (i) linear, OH-group-free dicarboxylic acid esters corresponding to a specified formula and/or (ii) a specified group of lactones. These polyurethane elastomers are particularly useful for the production of rollers, spring elements, mats and cushions, safety components in motor vehicles, shoe soles and shoe components.
    Type: Application
    Filed: August 25, 2005
    Publication date: March 16, 2006
    Inventors: Erhard Michels, Volker Schwob
  • Publication number: 20050197413
    Abstract: The invention relates to flexible molded parts of expanded polyurethane with molded part densities of <350 kg/m3 and with a thick skin on one side and good molded part stability (molded part shrinkage <1.5%; according to DIN ISO 02769) based on special components, and their use, especially in the shoe sector.
    Type: Application
    Filed: March 1, 2005
    Publication date: September 8, 2005
    Inventors: Wolfgang Grimm, Erhard Michels, Klaus Brecht, Uwe Pfeuffer
  • Publication number: 20050143555
    Abstract: The present invention relates to a process for cleaning multi-product production plants for polyester polyols with a cleaning polyol. The cleaning polyol can be used as a raw material in the production of further polyols.
    Type: Application
    Filed: December 7, 2004
    Publication date: June 30, 2005
    Inventors: Hartmut Nefzger, Gerhard Klein, Erhard Michels, Ulrich Boddenberg
  • Publication number: 20050137275
    Abstract: The present invention relates to polymer dispersions in polyester polyols, to a process for their preparation, and to the preparation of polyurethanes, especially microcellular polyurethanes, from these polymer dispersions.
    Type: Application
    Filed: December 2, 2004
    Publication date: June 23, 2005
    Inventors: Hartmut Nefzger, Erika Bauer, Erhard Michels, Nils Perchenek
  • Publication number: 20050131137
    Abstract: The present invention relates to polymer dispersions in polyester polyols, to a process for their preparation of these polymer dispersions and to their use for the preparation of polyurethanes, especially microcellular polyurethanes.
    Type: Application
    Filed: December 7, 2004
    Publication date: June 16, 2005
    Inventors: Hartmut Nefzger, Erika Bauer, Erhard Michels
  • Publication number: 20050124733
    Abstract: The present invention relates to a process for reducing the residual monomer content of polymer dispersions in polyester polyols.
    Type: Application
    Filed: December 2, 2004
    Publication date: June 9, 2005
    Inventors: Hartmut Nefzger, Eva Pischedda, Erhard Michels
  • Patent number: 6858699
    Abstract: Polyurethane elastomers having a defined node density are produced from specific polyetherester polyols. These elastomers are particularly useful for the production of microcellular and solid polyurethane elastomer components.
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: February 22, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Erhard Michels, Hartmut Nefzger, Stephan Schleiermacher
  • Publication number: 20050027067
    Abstract: The present invention relates to polymer dispersions in polyester polyols, a process for producing them and their use for the production of polyurethanes, in particular microcellular polyurethanes. These polyester polyols have sulfur atoms and are free of olefinically unsaturated groups.
    Type: Application
    Filed: July 22, 2004
    Publication date: February 3, 2005
    Inventors: Hartmut Nefzger, Erika Bauer, Erhard Michels
  • Publication number: 20040220290
    Abstract: The invention relates to flexible moldings of foamed polyurethane with densities of <500 kg/m3, preferably of <350 kg/m3, and with high molding stability (i.e having a maximum molding shrinkage of 1.5% according to DIN ISO 02769) which are based on special components. These flexible polyurethane moldings are particularly suitable in the shoe sector.
    Type: Application
    Filed: April 26, 2004
    Publication date: November 4, 2004
    Inventors: Wolfgang Grimm, Erhard Michels, Marc Schutze
  • Patent number: 6737471
    Abstract: A solid and/or cellular polyurethane elastomers which are produced using polyester polyols are disclosed. The elastomers which exhibit improved stability to hydrolysis are characterized in that their preparation is carried out in the presence of at least one esters of monobasic carboxylic acid or polybasic carboxylic acids, the (first) dissociation constant (pK) of which is 0.5 to 4.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: May 18, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Lorenz, Marc Sch├╝tze, Erhard Michels, Alexander Eckhardt
  • Publication number: 20040082677
    Abstract: Polyurethane elastomers having a defined node density are produced from specific polyetherester polyols. These elastomers are particularly useful for the production of microcellular and solid polyurethane elastomer components.
    Type: Application
    Filed: October 20, 2003
    Publication date: April 29, 2004
    Inventors: Erhard Michels, Hartmut Nefzger, Stephan Schleiermacher