Patents by Inventor Karl-Heinz Stritzke

Karl-Heinz Stritzke 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).

  • Polymeric stabilizers for emulsion polymerization
    Patent number: 5277978
    Abstract: The process of producing a stable polymer dispersion by aqueous emulsion polymerization of an ethylenically unsaturated monomer in the presence of a stabilizer selected from a polyester or polyamide containing a sulfate or sulfonate group.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: January 11, 1994
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Dieter Feustel, Karl-Heinz Stritzke
  • Adducts of carboxylic acids and isocyanates with epoxides, aqueous dispersions containing these adducts, processes for their preparation and their use in the autophoretic coating of metallic surfaces
    Patent number: 4859721
    Abstract: The invention relates to polymers of formula (I) ##STR1## in which R.sup.1 and R.sup.2 represent optionally substituted alkylene, cycloalkylene or phenylene radicals, A represents hydrogen or carboxyl groups, B represents hydrogen or groups derived from carboxylic acids or isocyanates. The invention also relates to aqueous epoxy resin dispersions containing one or more polymers of general formula (I) in addition to bases, acid, one or more emulsifiers and, optionally, other active substances and auxiliaries typically used in epoxy resin dispersions and also water.The invention also relates to a process for the production of such aqueous epoxy resin dispersions and to the use of such resins in processes for the autophoretic coating of metallic surfaces.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: August 22, 1989
    Assignee: Henkel Kommaditgesellschaft auf Aktien
    Inventors: Doris Oberkobusch, Roland Morlock, Karl-Heinz Stritzke, Ludwig Schieferstein