Patents Represented by Attorney R. H. Haas

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  • Microwave devulcanization of rubber
    Patent number: 4104205
    Abstract: Elastomer waste may be devulcanized without depolymerization to a material capable of recompounding and revulcanization into a product having physical properties essentially equivalent to the original vulcanizate. Devulcanization is accomplished by application of a controlled dose of microwave energy to sized material, preferably in a continuous process.
    Type: Grant
    Filed: January 6, 1976
    Date of Patent: August 1, 1978
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Donald S. Novotny, Richard L. Marsh, Frank C. Masters, David N. Tally
  • Butadiene grafted ethylene-vinyl acetate hot melt adhesive
    Patent number: 3959410
    Abstract: A structural hot melt adhesive of butadiene grafted ethylene-vinyl acetate. The butadiene graft is 1 to 12 percent by weight, preferably 4 to 8 percent by weight. The ethylene/vinyl acetate ratio is about 91/9 to 72/28, preferably about 83/17. Preferably grafting is done at room temperature using radiation. Peel adhesion on various fabric and metal substrates improved over ungrafted control samples from 100 to as much as 1500 percent.
    Type: Grant
    Filed: August 12, 1974
    Date of Patent: May 25, 1976
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Raymond R. DiRossi