Patents Represented by Attorney Roger K. Graham

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  • Methyl methacrylate compositions
    Patent number: 5061747
    Abstract: Aliphatic alcohol, and high boiling point hydroxy compound additives are added to poly methyl methacrylate to improve the ultraviolet radiation resistance of the polymer. The additives may be incorporated into the poly methyl methacrylate by including the additives with the monomers prior to polymerization. Alternatively, the additives may be incorporated into the poly methylmethacrylate by addition to polymerized methyl methacrylate.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: October 29, 1991
    Assignee: Rohm and Haas Company
    Inventors: Donald E. Roach, Paul J. Keating
  • Novel damping compositions
    Patent number: 5008324
    Abstract: A process of using compositions comprising certain thermoplastic elastomeric polymers for damping and damping compositions comprising soft thermoset polymer containing microscopically discrete segments of said thermoplastic elastomeric polymers.
    Type: Grant
    Filed: April 11, 1989
    Date of Patent: April 16, 1991
    Assignee: Rohm and Haas Company
    Inventors: Paul C. Killgoar, Jr., Marsha A. Samus, Robert D. Koller, Sr., Carl P. Hemenway