Patents Assigned to Basell Polidefine Italia s.r.l.
  • Catalyst for propylene polymerization
    Patent number: 7504352
    Abstract: A catalyst for use in the formation of polypropylene is disclosed that comprises a titanium compound having at least one titanium-halogen bond, supported on an activated, amorphous magnesium dihalide support that is essentially free of alkoxy functionality, with a titanium metal content of no more than about 2 wt %, based on the weight of the support, and an internal donor component.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: March 17, 2009
    Assignee: Basell Polidefine Italia s.r.l.
    Inventors: Ronald Alan Epstein, William Thomas Wallack