Patents by Inventor Eberhard Koenig

Eberhard Koenig 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: 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: 6919417
    Abstract: The present invention relates to aqueous- or solvent-based, one-component, polyurethane stoving coating compositions containing i) polyisocyanates blocked with CH-acidic esters, especially malonic esters, ii) OH-containing polymeric compounds, and iii) 0.5 to 4.0 wt. %, based on the solids content of components i) and ii), of tetravalent titanium compounds. The stoving coating compositions have a low stoving temperature and are useful for coating plastic parts.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: July 19, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Eberhard König, Christoph Gürtler, Frank Kobor, Wolfram Küttner
  • Patent number: 6723817
    Abstract: The present invention relates to a blocked polyisocyanate containing: A1) 40 to 70 equivalent % of a predominantly linear NCO prepolymer having an NCO content of 5.0 to 10.0 wt. %, A2) 30 to 60 equivalent % of an aliphatic lacquer polyisocyanate, B1) 30 to 60 equivalent % of epsilon-caprolactam and B2) 40 to 70 equivalent % of diisopropylamine or 1,2,4-triazole as blocking agents, wherein the equivalent percents of isocyanate components A1) and A2) add up to 100 %, and the equivalent percents of blocking agents B1) and B2) add up to 100 to 110%, based on the equivalents of component A). The present invention also relates to a process for preparing these blocked polyisocyanates to coating compositions containing these blocked polyisocyanates and to metal substrates coated with these coating compositions.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: April 20, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Eberhard König, Beate Baumbach, Christian Füssel
  • Patent number: 6716910
    Abstract: The invention relates to aqueous and/or water-dilutable polyisocyanate crosslinkers blocked with diisopropylamine, to their preparation and use in one-component baking lacquers, for example as fillers in automotive lacquering.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: April 6, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Eberhard König, Jan Mazanek, Heino Müller, Joachim Petzoldt
  • Patent number: 6713556
    Abstract: The invention relates to particular mixtures of polyisocyanates which are blocked with 3,5-dimethylpyrazole, and to the use thereof as crosslinking component in single-component stoving lacquers, especially automotive clear lacquers.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: March 30, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Eberhard König, Reinhard Halpaap, Thomas Klimmasch, Hans-Ulrich Meier-Westhues, Harald Mertes, Joachim Schüll, Bernd Steinhilber
  • Publication number: 20030139562
    Abstract: The invention relates to reacted lacquer binders, their production and use in polyurethane single-component stoving enamels, in particular for the coil coating process.
    Type: Application
    Filed: December 6, 2002
    Publication date: July 24, 2003
    Inventors: Eberhard Koenig, Beate Baumbach, Christian Fussel
  • 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: 6583216
    Abstract: The present invention relates to blocked polyisocyanate cross-linking agents and their use in one-component stoving lacquers, in particular in solvent-containing or predominantly water-based plastics coatings having a soft-feel effect.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: June 24, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Eberhard König, Claus Kobusch, Uwe Klippert, Wolfram Küttner
  • Patent number: 6559264
    Abstract: The present invention relates to blocked polyisocyanate crosslinking agents, to the production thereof and to the use thereof in single-component stoving lacquers, particularly OEM clear lacquers (original equipment material, initial lacquer coating).
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: May 6, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Eberhard König, Hans-Ulrich Meier-Westhues, Thomas Klimmasch
  • Patent number: 6509433
    Abstract: The present invention relates to blocked fluorine-containing polyisocyanates which have a fluorine content, calculated as F=19, of 1.0 to 20.0 wt. %, preferably 4.0 to 10.0 wt. %, and are suitable for preparing stoving coatings having a water- and soil-repellent surface, wherein the fluorine-containing polyisocyanates are based on the reaction product of aliphatic polyisocyanates or polyisocyanate mixtures having an NCO content of 10 to 25 wt. % and a functionality of at least 2.5 with monofunctional isocyanate blocking agents and a fluorinated monoalcohols wherein i) 75 to 95 equivalent-% of the isocyanate groups are reacted with isocyanate blocking agents, ii) 5 to 25 equivalent-% of the isocyanate groups are reacted with fluorinated monoalcohols and iii) the equivalents of i) and ii) add up to 100%.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: January 21, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Eberhard Koenig, Beate Baumbach, Christian Füssel, Juan Gonzalez-Blanco
  • Patent number: 6451963
    Abstract: The invention relates to a process for the coagulation of PU dispersions, the coagulation products thus obtained and the use of the coagulated PU dispersions. Reactive or post-crosslinkable PU dispersions are suitable as PU dispersions for the process according to the invention. The processes according to the invention comprise the production of films, the coating of many different materials and the partial or complete impregnation of nonwoven, knitted or other fabrics for strengthening purposes.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: September 17, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rolf Langel, Detlef-Ingo Schütze, Werner Bälz, Eberhard König
  • Publication number: 20020123642
    Abstract: The present invention relates to blocked fluorine-containing polyisocyanates which have a fluorine content, calculated as F=19, of 1.0 to 20.0 wt.%, preferably 4.0 to 10.0 wt.%, and are suitable for preparing stoving coatings having a water- and soil-repellent surface, wherein the fluorine-containing polyisocyanates are based on the reaction product of aliphatic polyisocyanates or polyisocyanate mixtures having an NCO content of 10 to 25 wt.% and a functionality of at least 2.
    Type: Application
    Filed: September 14, 2001
    Publication date: September 5, 2002
    Inventors: Eberhard Koenig, Beate Baumbach, Christian Fussel, Juan Gonzalez-Blanco
  • Patent number: 6242530
    Abstract: The present invention relates to (cyclo)aliphatic polyisocyanates which have a content of blocked and unblocked isocyanate groups (calculated a NCO) of 5 to 25 wt. %, in which at least 95% of the isocyanate groups are present in a form blocked with blocking agents, and which also contain 0.1 to 5.0 wt. % of amines having a structural unit corresponding to formula (I) The present invention also relates to the use of the blocked polyisocyanates according to the invention as crosslinking agents for organic polyhydroxyl compounds in 1C-PUR stoving lacquers, especially for automotive clearcoats and coil coating lacquers.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: June 5, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Eberhard König, Karl-Ludwig Noble, Theodor Engbert
  • Patent number: 6187860
    Abstract: The present invention relates to aqueous or water dilutable blocked polyisocyanates containing a) a polyisocyanate component and, based on the equivalents of isocyanate groups, b) 60 to 85 equivalent % of a pyrazole blocking agent, c) 15 to 40 equivalent % of a monohydroxycarboxylic acid to impart hydrophilic properties and d) 0 to 15 equivalent % of a difunctional chain extender containing OH and/or NH2 groups, wherein the amounts of a) to d) are selected so that the equivalent ratio of NCO groups of component a) to isocyanate-reactive groups of components b), c) and d) is 1:0.8 to 1:1.2. The present invention also relates to a process for preparing these polyisocyanate crosslinking agents and to their use in combination with polyhydroxyl compounds which are soluble and/or dispersible in water as binders for aqueous stoving lacquers.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: February 13, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Eberhard König, Heino Müller, Harald Blum, Joachim Petzoldt
  • Patent number: 6150457
    Abstract: The present invention relates to compounds containing modified hydrazide groups and corresponding to formula I ##STR1## wherein R represents the residue obtained by removing the isocyanate groups from a monomeric polyisocyanate, a polyisocyanate adduct or an NCO prepolymer,X represents OR' or NHR' andR' represents a group which is inert to isocyanate groups under the conditions used to form the compound of formula I andn has a value of 2 to 6.The present invention also relates to one-component, thermoset coating compositions containing the compounds of formula I and a cross-linking component that is reactive with these compounds. Finally, the present invention relates coatings, sealants and adhesives prepared from these thermoset compositions.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: November 21, 2000
    Assignees: Bayer Corporation, Bayer Aktiengesellscaft
    Inventors: Sze-Ming Lee, Douglas A. Wicks, Eberhard Koenig, Carol L. Kinney, Karen M. Henderson
  • Patent number: 6127514
    Abstract: The present invention relates to one-component, thermoset compositions containinga) compounds containing modified hydrazide groups and corresponding to formula I ##STR1## wherein p2 R represents the residue obtained by removing the isocyanate groups from a monomeric polyisocyanate, a polyisocyanate adduct or an NCO prepolymer,X represents OR' or NHR' andR' represents a group which is inert to isocyanate groups under the conditions used to form the compound of formula I andn has a value of 2 to 6,b) compounds containing two or more epoxy groups andc) a basic catalyst.The present invention also relates to coatings, adhesives and sealants prepared from these thermoset compositions.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: October 3, 2000
    Assignees: Bayer Corporation, Bayer Aktiengesellschaft
    Inventors: Douglas A. Wicks, Sze-Ming Lee, Eberhard Koenig, Carol L. Kinney, Karen M. Henderson