Patents by Inventor Mark Kratz

Mark Kratz 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).

  • Polymerizing monomers in presence of polyol and castor oil-polyol product
    Patent number: 5854358
    Abstract: A process is described for the preparation of stable, agglomerate-free, low-viscosity graft copolymer dispersions by the free-radical polymerization of olefinic monomers, such as styrene and/or acrylonitrile, with polyol compounds in the presence of a hydroxyl compound modified with castor oil. The use of these graft copolymer dispersions in the manufacture of polyurethane plastics, particularly flexible foams, by the isocyanate polyaddition process is also described.
    Type: Grant
    Filed: July 16, 1996
    Date of Patent: December 29, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Torsten Heinemann, Hans-Joachim Scholl, Manfred Dietrich, Gundolf Jacobs, Mark Kratz, Josef Sanders, Helmut Woynar
  • Low-viscosity, stable, agglomerate-free polymer polyols, a process for their preparation and their use in producing polyurethane plastics
    Patent number: 5594066
    Abstract: Stable, agglomerate-free, low-viscosity graft copolymer dispersions are prepared by the radical polymerization of 25 to 65% by weight of ethylenically unsaturated monomers in the presence of a base polyol, a macromer, a low-molecular weight regulator and, optionally, an organic solvent. The dispersions of this process are suitable as a polyol component for the production of polyurethane plastics by the isocyanate addition process.
    Type: Grant
    Filed: August 23, 1995
    Date of Patent: January 14, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventors: Torsten Heinemann, Manfred Dietrich, Gundolf Jacobs, Mark Kratz, Josef Sanders, Uwe Scholz, Helmut Woynar
  • Low viscosity polymer polyols a process for their production as well as the manufacture of polyurethane from materials
    Patent number: 5554662
    Abstract: A process for the production of stable, agglomerate-free, low viscosity graft copolymer dispersions through radical polymerization of ethylenically unsaturated monomers in the presence of a base polyol, a macromer, an enol ether of a specific formula, and optionally, an organic solvent. These enol ethers correspond to the general formula:A=CH--O--Rwherein:A represents a di-valent residue of the formula ##STR1## R represents an aliphatic hydrocarbon radical having 1 to 18 carbon atoms, a cycloaliphatic hydrocarbon radical having 5 to 10 carbon atoms, or a substituted or unsubstituted benzyl radical;andR' represents a hydrogen atom or an aliphatic hydrocarbon radical having 1 to 8 carbon atoms.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: September 10, 1996
    Assignee: Bayer Adtiengesellschaft
    Inventors: Josef Sanders, Mark Kratz, Manfred Dietrich, Torsten Heinemann, Helmut Woynar, Gundolf Jacobs, Uwe Scholz