Patents Examined by F. M. Teslein
  • Method for improving the melt flow rate of polystyrene
    Patent number: 4782134
    Abstract: The specification discloses a method for assuring consistent and, if desired, increased melt flow rate in a vinyl aromatic based polymer by controlling the degree of absorption of carbon dioxide, oxygen and/or argon for a substantial period of time immediately prior to introduction of the polymer into a molding machine.
    Type: Grant
    Filed: October 20, 1986
    Date of Patent: November 1, 1988
    Assignee: The Dow Chemical Company
    Inventors: Eugene R. Moore, Rudolph Lindsey, Jr., Brian D. Dalke