Patents by Inventor Duane M. Naeger

Duane M. Naeger 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: 5219933
    Abstract: This invention is a thermoplastic blend based on polycarbonate, thermoplastic polyurethane and an impact modifier. These resins have been found to be suitable for preparing molded or shaped articles having excellent combinations of processability, heat resistance, flexibility, solvent resistance and low temperature toughness. These resins comprise (a) about 35 to about 65 percent by weight of a thermoplastic aromatic polycarbonate; (b) about 35 to about 65 percent by weight of a thermoplastic polyurethane; and (c) about 1 to about 20 percent by weight of an impact modifier, which weight percentages are based on the combined weights of the polycarbonate and thermoplastic polyurethane. A preferred embodiment of the present invention is a thermoplastic automobile part, such as a bumper facia, prepared from such a thermoplastic resin.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: June 15, 1993
    Assignee: The Dow Chemical Company
    Inventors: David E. Henton, Duane M. Naeger, F. Michael Plaver
  • Patent number: 5194494
    Abstract: Polymer blend compositions having an advantageous combination of low temperature toughness, solvent resistance, scratch resistance, paintability and elevated temperature resistance comprise from about 20 to about 65 weight percent of a rubber modified monovinylidene aromatic/ethylenically unsaturated nitrile/N-arylmaleimide copolymer and from about 35 to about 80 weight percent of certain selected polyester-based elastomeric thermoplastic polyurethane ingredients. The resulting polymer blend compositions are especially well suited for use in the preparation of molded articles or thermoformed sheet materials intended for use in relatively low temperature environments including, for example, in various motor vehicle and/or recreational vehicle applications, as freezer and refrigerator liners, snow removal equipment housings or accessories, and the like.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: March 16, 1993
    Assignee: The Dow Chemical Company
    Inventors: David E. Henton, Duane M. Naeger, F. Michael Plaver, Robert S. Drzal
  • Patent number: 5055525
    Abstract: Polymer blend compositions having an advantageous combination of low temperature toughness, solvent resistance, scratch resistance and paintability comprise from about 19 to about 64 weight percent of a mass, solution, mass/suspension or mass/solution polymerized rubber modified monovinylidene aromatic/ethylenically unsaturated nitrile polymer; from about 35 to about 80 weight percent of certain selected polyester-based elastomeric thermoplastic polyurethane ingredients; and from about 1 to about 30 weight percent of a relatively high rubber content emulsion polymerized rubber modified graft copolymer ingredient. The resulting polymer blend compositions are especially well suited for use in the preparation of molded articles intended for use in relatively low temperature environments including, for example, in various motor vehicle and/or recreational vehicle applications, as freezer and refrigerator liners, snow removal equipment housings or accessories, and the like.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: October 8, 1991
    Assignee: The Dow Chemical Company
    Inventors: David E. Henton, F. Michael Plaver, Duane M. Naeger, Robert S. Drzal