Patents by Inventor Franz Six

Franz Six 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).

  • Adhesive aqueous dispersions of polyvinyl alcohol graft polymers with acidic hardeners and process of production
    Patent number: 4118357
    Abstract: An aqueous copolymer adhesive dispersion having a long pot life and giving highly waterproof bonds, comprising an acid hardener of water-soluble acids having pKs of under 0 and an aqueous dispersion of a pre-crosslinked polyvinyl ester grafted onto polyvinyl alcohol, said polyvinyl ester being an ester of an acid of 1 to 12 carbon atoms and said pre-crosslinking caused by the presence of small amounts of poly-ethylenically-unsaturated compounds in the monomer mixture, as well as the aqueous dispersion and the method for its production.
    Type: Grant
    Filed: May 2, 1977
    Date of Patent: October 3, 1978
    Assignee: Wacker-Chemie GmbH
    Inventors: Hartmut Brabetz, Christof Kemenater, Franz Six, Wilhelm Kaiser