Patents by Inventor Friedrich Heichele

Friedrich Heichele 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: 3996173
    Abstract: An impact resistant thermoplastic molding composition comprisingA. 80% to 98% by weight of polyvinyl chloride,B. 2% to 20% by weight of a modifying resin for improving the impact strength, characterized by an additional content of,C. 2% to 30% by weight, based on PVC, of a coated calcium carbonate, the surface of which has been treated with stearic acid and which has a particle size of 0.04 to 0.1 .mu..The composition is useful for preparing shaped articles, such as hollow articles.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: December 7, 1976
    Assignee: Wacker-Chemie GmbH
    Inventors: Friedrich Heichele, Johann Bauer, Helmut Wimmer
  • Patent number: 3960986
    Abstract: Impact-resistant molding compositions consisting essentially ofA. from 20% to 80% by weight of polyvinyl chloride having a K-value of from 55 to 70,B. from 19.5% to 75% by weight of a vinyl chloride grafted copolymer of ethylene and vinyl acetate, said copolymer having from 30% to 55% by weight of vinyl acetate monomer units and a Mooney viscosity of from 20 to 50, said vinyl chloride grafted copolymer having from 5% to 15% by weight of said copolymer and a K-value of from 55 to 70, andC. from 0.5% to 5% by weight of an ethylene/vinyl acetate copolymer having from 60% to 70% by weight of vinyl acetate monomer units.
    Type: Grant
    Filed: July 3, 1974
    Date of Patent: June 1, 1976
    Assignee: Wacker-Chemie GmbH
    Inventors: Friedrich Heichele, Georg Vojtechovsky, Georg Hollenbach, Klaus Adler, Johann Bauer