Patents Examined by Paul H. Michl
  • Polymer compositions
    Patent number: 5510413
    Abstract: Polymer compositions comprising .alpha.-olefin polymers and a minor proportion of synthetic basic zeolite are stabilized against the harmful effects of corrosion of metal surfaces when processed through mechanical equipment such as molds and extruders where the composition normally contacts metal surfaces.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: April 23, 1996
    Assignee: Shell Polypropylene Company
    Inventors: James D. McCullough, Thomas F. Brownscombe, Ananda M. Chatterjee