Patents by Inventor Hans-Martin Schonrock

Hans-Martin Schonrock 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: 5985369
    Abstract: A method is described for the coating of substrates by the application of a liquid coating compound and subsequent curing, which is characterised in that there are added to the coating compound one or more polybutenes (C4-polyolefins) with a molecular weight of 200 to below 500, in a quantitative proportion of 0.5 to 10 wt. %, referred to the solids content of the coating compound, in order to improve the flow properties. The liquid coating compounds are also described.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: November 16, 1999
    Assignee: Herberts Gesellschaft Mit Beschrankter Haftung
    Inventors: Christiane Kerkmann, Hans-Jurgen Schlinsog, Hans-Martin Schonrock
  • Patent number: 5663233
    Abstract: A solvent based coating composition containing a binding agent, the binding agent comprising: (a) 10 to 80 wt.% of at least one hydroxyfunctional polyester formed by reacting a mixture comprising: (i) 10 to 40 mol.% of a 2,2-dialkylalkanediol with two primary OH groups; (ii) 10 to 30 mol.% of a polyol with at least one secondary OH group; (iii) 20 to 50 mol.% of an aliphatic or cycloaliphatic dicarboxylic acid with fewer than 16 C atoms or anhydrides thereof; (iv) 5 to 30 mol.% of a compound selected from the group consisting of dimeric fatty acids, dimeric diols, epsilon-caprolactone, and mixtures thereof; (v) 1 to 15 mol.% of a hydroxycarboxylic acid with at least one hydroxy group and at least one carboxyl group; and (b) 10 to 80 wt.% of a (meth)acrylic copolymer containing a hydroxyl group; and (c) 10 to 60 wt.% of a crosslinking agent; wherein the sum of the wt.% of components (a)-(c) is 100% of the binding agent.
    Type: Grant
    Filed: June 19, 1995
    Date of Patent: September 2, 1997
    Assignee: Herberts Gesellschaft Mit Beschrankter Haftung
    Inventors: Klaus Bederke, Friedrich Herrmann, Hermann Kerber, Thomas Kutzner, Hans-Martin Schonrock
  • Patent number: 5614590
    Abstract: A transparent coating agent which is free of heavy metal catalysts and which contains a hydroxy functional (meth)acrylic copolymer based binder, an aliphatic or cycloaliphatic polyisocyanate crosslinking agent, a solvent, and lacquer adjuvant.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: March 25, 1997
    Assignee: Herberts Gesellschaft mit beschrankterhaftung
    Inventors: Klaus Bederke, Friedrich Herrmann, Hermann Kerber, Hans-Martin Schonrock
  • Patent number: 5552184
    Abstract: A coating agent with a viscosity of 100-1000 mPa.s, measured by rotational viscometry at 70.degree. C. and a shear rate of 235 s.sup.-1, containing45-85 wt % of one or more polyesters, that have a branched structure and are essentially free from aromatic structural units, with a number-average molecular weight (M.sub.n) of 350-3000 and a polydispersity of less than 3.5,10-40 wt % of one or more cross-linkers based on aminoplastic resins and/or blocked di- and/or polyisocyanates,0-20 wt % of one or more reactive diluents, and 0-10 wt % of one or more organic solvents.They are particularly suitable as hot-sprayable clear coats for multicoat lacquer finishes.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: September 3, 1996
    Assignee: Herberts GmbH
    Inventors: Peter Klostermann, Hans-Martin Schonrock, Klaus Schroter, Thomas Kutzner