Patents by Inventor Goetz-Ekkehard Sapper

Goetz-Ekkehard Sapper 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).

  • Aqueous chromophore and/or effect-producing coating material, and use of the same
    Publication number: 20060014857
    Abstract: A color and/or effect coating material which is free from rheological aids based on phyllosilicates and comprises (A) a water-soluble, water-dilutable and/or water-dispersible polyurethane; (B) a color and/or effect pigment; (C) a dispersing assistant selected from the group consisting of the reaction products of (c1) a functionalized copolymer containing (c11) a copolymerized olefinically unsaturated monomer isocyanate groups, anhydride groups and epoxy groups; and (c12) a copolymerized olefinically unsaturated monomer which is free from isocyanate-, anhydride- and epoxy-reactive functional groups; (c2) at least one homopolymeric polyalkylene glycol, and (c3) at least one compound of the general formula I: NR2—C(O)—NR2??(I) ?in which the variables R are selected from the group consisting of hydrogen atoms and organic radicals, at least one of the radicals R containing at least one reactive functional group selected from the group consisting of isocyanate-, anhydride- and epoxy-reactive groups; and (D) a rh
    Type: Application
    Filed: November 5, 2003
    Publication date: January 19, 2006
    Inventors: Goetz-Ekkehard Sapper, Tobias Hummert
  • Low-yellowing aqueous clear powder coating dispersions, method of making the dispersions, and process for producing clearcoat finishes with the dispersions
    Patent number: 6770329
    Abstract: The present invention relates to a process for producing single-coat or multicoat clearcoat finishes on primed or unprimed substrates by applying at least one powder coating dispersion, in particular a powder clearcoat slurry, to the substrate and then curing the resulting film(s) thermally and/or with actinic radiation, in which oxalic acid is added to at least one powder coating dispersion, in particular to a powder clearcoat slurry.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: August 3, 2004
    Assignee: BASF Coatings AG
    Inventors: Günther Ott, Joachim Woltering, Wilfried Stübbe, Ulrike Röckrath, Maximilian Bendix, Ulrich Kalck, Jan Berg, Götz-Ekkehard Sapper
  • Low-yellowing aqueous clear powder coating dispersions, method of making the dispersions, and process for producing clearcoat finishes with the dispersions
    Patent number: 6509096
    Abstract: The present invention relates to a process for producing single-coat or multicoat clearcoat finishes on primed or unprimed substrates by applying at least one powder coating dispersion, in particular a powder clearcoat slurry, to the substrate and then curing the resulting film(s) thermally and/or with actinic radiation, in which at least one polyvalent inorganic acid and/or oxalic acid are or is added to at least one powder coating dispersion, in particular to a powder clearcoat slurry.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: January 21, 2003
    Assignee: BASF Coatings AC
    Inventors: Günther Ott, Joachim Woltering, Wilfried Stübbe, Ulrike Röckrath, Maximilian Bendix, Ulrich Kalck, Jan Berg, Götz-Ekkehard Sapper