Patents Represented by Attorney Robert D. Merchant

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  • Copolymers of vinyl styrlpyridines or vinyl stilbazoles with bismaleimide
    Patent number: 4526925
    Abstract: Vinyl pyridines including vinyl stilbazole materials and vinyl styrylpyridine oligomer materials are disclosed. These vinylpyridines form copolymers with bismaleimides which copolymers have good fire retardancy and decreased brittleness. The cure temperatures of the copolymers are substantially below the cure temperatures of the bismaleimides alone. Reinforced composites made from the cured copolymers are disclosed as well.
    Type: Grant
    Filed: November 18, 1983
    Date of Patent: July 2, 1985
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: John A. Parker, Alvin H. Heimbuch, Ming-Ta S. Hsu, Timothy S. Chen