Patents by Inventor Karin Naujoks

Karin Naujoks 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: 8048954
    Abstract: The present invention relates to aqueous non-ionically hydrophilised binding-agent dispersions based on polyurethane ureas with terminal polyethylene-oxide groups, to the preparation thereof, and to the use thereof for producing coatings.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: November 1, 2011
    Assignee: Bayer MaterialScience AG
    Inventors: Hans Georg Grablowitz, Thorsten Rische, Thomas Feller, Juergen Meixner, Karin Naujoks, Holger Casselmann
  • Publication number: 20090124764
    Abstract: The present invention relates to aqueous non-ionically hydrophilised binding-agent dispersions based on polyurethane ureas with terminal polyethylene-oxide groups, to the preparation thereof, and to the use thereof for producing coatings.
    Type: Application
    Filed: November 12, 2008
    Publication date: May 14, 2009
    Applicant: Bayer MaterialScience AG
    Inventors: Hans Georg Grablowitz, Thorsten Rische, Thomas Feller, Juergen Meixner, Karin Naujoks, Holger Casselmann
  • Patent number: 7220814
    Abstract: The present invention relates to new hydrophilicized blocked polyisocyanates, a process for preparing them and their use.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: May 22, 2007
    Assignee: Bayer MaterialScience AG
    Inventors: Thorsten Rische, Christoph Gürtler, Karin Naujoks, Thomas Feller
  • Patent number: 7176254
    Abstract: Novel sizing compositions, their preparation and use. The compositions contain water-dispersible and/or water-soluble and alkylamine-blocked polyisocyanates, film-forming resins, coupling agents and lubricants. The isocyanates are synthesized from at least one polyisocyanate, at least one ionic and/or potentially ionic and/or nonionic compound, and at least one blocking agent which is at least 20% by weight aralkylamines.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: February 13, 2007
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thorsten Rische, Karin Naujoks, Thomas Feller, Christoph Gürtler, Jan Mazanek
  • Patent number: 7091280
    Abstract: The present invention relates to a binder composition containing A) at least one aqueous polyurethane-polyurea dispersion and B) at least one stabilizer containing a) at least one amine having a structural unit corresponding to formula (I) ?which has no hydrazide groups, b) at least one compound having a structural unit corresponding to formula (II) —CO—NH—NH—??(II) ?and c) optionally a stabilizing compound other than a) and b). The polyurethane dispersions are manufactured in the presence of components a) and b). It is possible for components a) and b), depending on the grade used, to be incorporated into the polymer framework as structural units.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: August 15, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thorsten Rische, Karin Naujoks, Jürgen Meixner, Thomas Feller, Eberhard König
  • Patent number: 6960639
    Abstract: Aqueous coating compositions based on polyurethane dispersions which cure under the influence of high-energy radiation, to a process for preparing them and to their use. The coating compositions contain a polyisocyanate, a polyurethane containing free-radically polymerizable groups, and an initiator which is capable of initiating a free-radical polymerization.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: November 1, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jan Weikard, Erhard Lühmann, Christoph Irle, Thorsten Rische, Karin Naujoks, Thomas Feller, Jan Mazanek
  • Publication number: 20040195731
    Abstract: A process for preparing glass fiber reinforced plastics using high-energy radiation. A sizing composition is applied to the glass fiber, and the curing mechanism of the sizing composition proceeds in a controlled way by the use of two crosslinking mechanisms which can be activated separately from one another. Aqueous UV-curing polyurethane dispersions containing few or no active hydrogen atoms are used in combination with water-dispersible or water-soluble blocked polyisocyanates.
    Type: Application
    Filed: June 10, 2003
    Publication date: October 7, 2004
    Inventors: Thorsten Rische, Jan Weikard, Thomas Feller, Erhard Luhmann, Karin Naujoks
  • Patent number: 6784243
    Abstract: The invention relates to polyurethane-polyurea dispersions, also called PU dispersion, which contain aralkylamine-blocked isocyanate groups, and to their preparation and use. This blocking agent ahs a significantly lower deblocking temperature as compared with the prior art. Coatings produced from this dispersion have high hydrolysis resistances. The arylamine-blocked isocyanate groups are composed of polyisocyanates, polymeric polyols having average molar weights of 400 to 6000, at least one blocking agent, and either or both of nonionically hydrophilicizing compounds or compounds having at least one ionic or potentially ionic group.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: August 31, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thorsten Rische, Karin Naujoks, Thomas Feller, Christoph Gürtler, Jan Mazanek
  • Publication number: 20040162387
    Abstract: The present invention relates to aqueous one-component (1K) coating systems based on non-isocyanate-reactive polyurethane dispersions (polyurethane dispersions which are not reactive towards isocyanate groups) and blocked, hydrophobic polyisocyanates and also to a process for their preparation and use.
    Type: Application
    Filed: February 11, 2004
    Publication date: August 19, 2004
    Inventors: Thorsten Rische, Martin Melchiors, Karin Naujoks, Thomas Feller, Jurgen Meixner
  • Publication number: 20040138403
    Abstract: The present invention relates to new hydrophilicized blocked polyisocyanates, a process for preparing them and their use.
    Type: Application
    Filed: December 17, 2003
    Publication date: July 15, 2004
    Inventors: Thorsten Rische, Christoph Gurtler, Karin Naujoks, Thomas Feller
  • Publication number: 20040006152
    Abstract: Aqueous coating compositions based on polyurethane dispersions which cure under the influence of high-energy radiation, to a process for preparing them and to their use. The coating compositions contain a polyisocyanate, a polyurethane containing free-radically polymerizable groups, and an initiator which is capable of initiating a free-radical polymerization.
    Type: Application
    Filed: June 10, 2003
    Publication date: January 8, 2004
    Inventors: Jan Weikard, Erhard Luhmann, Christoph Irle, Thorsten Rische, Karin Naujoks, Thomas Feller, Jan Mazanek
  • Publication number: 20030232199
    Abstract: The invention relates to polyurethane-polyurea dispersions, also called PU dispersion, which contain aralkylamine-blocked isocyanate groups, and to their preparation and use. This blocking agent ahs a significantly lower deblocking temperature as compared with the prior art. Coatings produced from this dispersion have high hydrolysis resistances. The arylamine-blocked isocyanate groups are composed of polyisocyanates, polymeric polyols having average molar weights of 400 to 6000, at least one blocking agent, and either or both of nonionically hydrophilicizing compounds or compounds having at least one ionic or potentially ionic group.
    Type: Application
    Filed: June 10, 2003
    Publication date: December 18, 2003
    Inventors: Thorsten Rische, Karin Naujoks, Thomas Feller, Christoph Gurtler, Jan Mazanek
  • Publication number: 20030232907
    Abstract: Novel sizing compositions, their preparation and use. The compositions contain water-dispersible and/or water-soluble and alkylamine-blocked polyisocyanates, film-forming resins, coupling agents and lubricants. The isocyanates are synthesized from at least one polyisocyanate, at least one ionic and/or potentially ionic and/or nonionic compound, and at least one blocking agent which is at least 20% by weight aralkylamines.
    Type: Application
    Filed: June 10, 2003
    Publication date: December 18, 2003
    Inventors: Thorsten Rische, Karin Naujoks, Thomas Feller, Christoph Gurtler, Jan Mazanek
  • Publication number: 20030198796
    Abstract: The present invention relates to a water-dispersible crosslinker composition containing
    Type: Application
    Filed: January 14, 2003
    Publication date: October 23, 2003
    Inventors: Thorsten Rische, Karin Naujoks, Juergen Meixner, Thomas Feller, Eberhard Konig
  • Publication number: 20030194556
    Abstract: The present invention relates to a binder composition containing
    Type: Application
    Filed: January 14, 2003
    Publication date: October 16, 2003
    Inventors: Thorsten Rische, Karin Naujoks, Jurgen Meixner, Thomas Feller, Eberhard Konig
  • Patent number: 6586523
    Abstract: The invention relates to self-crosslinking polyurethane, polyurethane-polyurea or polyurea dispersions, a process for the preparation of such dispersions and the use thereof.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: July 1, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Harald Blum, Karin Naujoks, Eberhard König
  • Patent number: 5922806
    Abstract: The present invention relates to aqueous polyurethane dispersions having a resin solids content of 20 to 60 wt %, a viscosity at 23.degree. C. of 10 to 20,000 mPa.s and a pH of 5.5 to 8.5, wherein the polyurethane has a weight average molecular weight of 5,000 to 500,000 and a urethane group content (calculated as --NHCO--O--, molecular weight=59) of 2.5 to 15 wt %, and is based on a polyisocyanate component containing 50 to 100 wt % of 1-methyl-2,4- and/or -2,6-diisocyanatocyclohexane.The present invention also relates to aqueous binder compositions containing these aqueous polyurethane dispersions and known crosslinking resins and to the use of the aqueous polyurethane dispersions and aqueous binder compositions as binders for glass fiber sizings.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: July 13, 1999
    Assignee: Bayer Aktiengesellschaft
    Inventors: Harald Blum, Karin Naujoks, Helmut Reiff, Oswald Wilmes, Hans-Ulrich Meier-Westhues, Raymond Audenaert