Patents Assigned to Dow Global TechnologiessInc.
  • Process for preparing branched polycarbonate
    Patent number: 7057005
    Abstract: The present invention is a process for producing branched polycarbonate providing for optimum utilization of the branching agent. It was surprisingly found that adding at least a portion of the coupling catalyst to the polymerization at a point during the oligomerization in the reaction results in a higher degree of branching and improved rheological properties.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: June 6, 2006
    Assignee: Dow Global TechnologiessInc.
    Inventors: Susanne Rohde, Bernhard Elbert