Patents by Inventor Dean Raymond Weimer

Dean Raymond Weimer 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).

  • Reducing PVC polymer buildup in polymerization reactors with dithioxamides and alumina
    Patent number: 4068052
    Abstract: A method for preventing polymer buildup in the polymerization reactor during the suspension polymerization of vinyl chloride monomer to form polyvinyl chloride polymer and copolymers, the method comprising coating reactor surfaces in contact with the reaction medium with a material selected from the group consisting of alumina, dithiooxamide, and mixtures of these prior to carrying out this polymerization.
    Type: Grant
    Filed: June 23, 1976
    Date of Patent: January 10, 1978
    Assignee: Continental Oil Company
    Inventors: Dean Raymond Weimer, Albert M. Durr, Jr.