Patents Represented by Attorney Gail Dalickas

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  • Manufacture of polyethylenes
    Patent number: 6921795
    Abstract: Blends of two or more polyethylenes are made by reacting ethylene with an oligomerization catalyst that forms ?-olefins, and two polymerization catalysts, one of which under the process conditions copolymerizes ethylene and ?-olefins, and the other of which under process conditions does not readily copolymerize ethylene and ?-olefins. The blends may have improved physical properties and/or processing characteristics.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: July 26, 2005
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Lin Wang, Maria Spinu, Joel David Citron