Patents by Inventor Herbert Schrunner

Herbert Schrunner 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).

  • Heat stabilizers containing hydrotalcite particles with specific zeta potentials that demonstrate improved processing and performance in molded vinyl compounds
    Patent number: 8354462
    Abstract: Particulate solid heat stabilizer compositions for vinyl halide polymers are provided having about 30% to 90% by weight hydrotalcite particles represented by a sigmoidal curve on a cartesian coordinate plot of zeta potential (mV) versus pH. The curve has negative zeta potential values balanced against positive zeta potential values over a pH range and an inflection point between a pH of about 3 about 6 representing the isoelectric point (IEP) between said negative and positive zeta potential values. The stabilizer compositions are essentially free flowing, storage stable, and processable upon mixing components of the composition for blending with a vinyl halide polymer in effective amounts to confer heat stabilizing effectiveness upon said polymer.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: January 15, 2013
    Assignee: Chemson Polymer Additives AG
    Inventors: Paulette Baker, Bernhard Georg Pelzl, Herbert Schrunner
  • Heat Stabilizers Containing Hydrotalcite Particles With Specific Zeta Potentials That Demonstrate Improved Processing and Performance In Molded Vinyl Compounds
    Publication number: 20110127066
    Abstract: Particulate solid heat stabilizer compositions for vinyl halide polymers are provided having about 30% to 90% by weight hydrotalcite particles represented by a sigmoidal curve on a cartesian coordinate plot of zeta potential (mV) versus pH. The curve has negative zeta potential values balanced against positive zeta potential values over a pH range and an inflection point between a pH of about 3 about 6 representing the isoelectric point (IEP) between said negative and positive zeta potential values. The stabilizer compositions are essentially free flowing, storage stable, and processable upon mixing components of the composition for blending with a vinyl halide polymer in effective amounts to confer heat stabilizing effectiveness upon said polymer.
    Type: Application
    Filed: November 30, 2009
    Publication date: June 2, 2011
    Applicant: Chemson Polymer Additives AG
    Inventors: Paulette Baker, Bernhard Georg Pelzl, Herbert Schrunner