Patents by Inventor Evgueni Kirllov

Evgueni Kirllov has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Preparation of styrene homopolymers and styrene-ethlyene copolymers
    Patent number: 8110643
    Abstract: The present invention discloses copolymers of styrene and ethylene with highly syndiotactic styrene blocks prepared with of a catalyst system comprising a metallocene catalyst component of the general formula (I): (Flu-R?—C p)M(n3-C3R?5)(ether)n wherein Cp is a cyclopentadienyl, substituted or unsubstituted, Flu is a fluorenyl, substituted or unsubstituted, M is a metal Group III of the Periodic Table, ether is a donor solvent molecule, R? is a structural bridge between Cp and Flu (9 position) imparting stereorigidity to the component, each R? is the same or different and is hydrogen or an hydrocarbyl having from 1 to 20 carbon atoms and n is 0, 1 or 2. It also discloses styrene-ethylene copolymers having a high styrene content in which styrene units form syndiotactic polystyrene blocks.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: February 7, 2012
    Assignee: Total Petrochemicals Research Feluy
    Inventors: Jean-François Carpentier, Evgueni Kirllov, Abbas Razavi, Anne-Sophie Rodrigues