Patents by Inventor Vu Dang

Vu Dang 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).

  • Publication number: 20060252895
    Abstract: A class of bridged or unbridged metallocene compounds is disclosed, wherein the cyclopentadienyl ligands have two or four adjacent substituents forming one or two alkylenic cycles of from 4 to 8 carbon atoms. These metallocenes are useful as catalyst components for the polymerization of olefins, particularly for the (co)polymerization of ethylene and for the polymerization of propylene.
    Type: Application
    Filed: June 29, 2006
    Publication date: November 9, 2006
    Inventors: Clyde Bishop, Robert Jones, Krishna Raman, Vu Dang, Lin-Chen Yu, Luigi Resconi, Tiziano Dall'Occo, Maurizio Galimberti
  • Publication number: 20060178464
    Abstract: A nanocomposite composition having improved mechanical properties containing, A. about 5 to about 20 wt % of a compatibilizing dispersant chosen from an olefin polymer peroxide, an ionomer of an olefin polymer peroxide, a grafted olefin polymer peroxide, an mixtures thereof; B. about 1 to about 15 wt % of a smectite clay; and C. about 65 to about 94 wt % of an olefin polymer material; wherein the sum of components A+B+C is equal to 100 wt %.
    Type: Application
    Filed: March 15, 2004
    Publication date: August 10, 2006
    Applicant: Basell Poliolefine Italia s.r.l.
    Inventors: Vu Dang, Tam Phan
  • Publication number: 20060160954
    Abstract: A process for making a graft copolymer of an olefin polymer material in at least two polymerization stages comprising: a) treating a reactive, peroxide-containing olefin polymer material (A) at a temperature from about 80° C. to a temperature below the softening point of the polymer material with about 5 to about 120 parts per hundred parts of the polymer material (A) by weight (pph) of at least one grafting monomer which is polymerizable by free radicals; b) treating the stage a) graft copolymer at a temperature from about 80° C. to a temperature below the softening point of the stage a) graft copolymer, which is the same as or different from the temperature used in stage a), with about 5 to about 120 pph of at least one grafting monomer which is different from the monomer used in stage a) and polymerizable by free radicals.
    Type: Application
    Filed: December 13, 2005
    Publication date: July 20, 2006
    Applicant: Basell Poliolefine Italia s.r.l.
    Inventors: Vu Dang, Cheng Song
  • Publication number: 20060128824
    Abstract: A process for making a graft copolymer of an olefin polymer material in at least two polymerization stages comprising: a) irradiating an olefin polymer material at a temperature of about 10° C. to about 85° C. with high energy ionizing radiation, thereby forming an irradiated olefin polymer material (A); b) treating the irradiated olefin polymer material (A) at a temperature from about 25° C. to about 90° C. with about 5 to about 120 pph of at least one grafting monomer which is polymerizable by free radicals, thereby forming a stage b) graft copolymer; c) treating the stage b) graft copolymer at a temperature from about 25° C. to about 90° C., which is the same as or different from the temperature used in stage b), with about 5 to about 120 pph of at least one grafting monomer which is different from the monomer used in stage b) and polymerizable by free radicals.
    Type: Application
    Filed: December 13, 2005
    Publication date: June 15, 2006
    Applicant: Basell Poliolefine Italia s.r.l.
    Inventors: Vu Dang, Cheng Song
  • Publication number: 20060105891
    Abstract: A weight bar for use with a dumbbell having an externally-threaded end is provided that includes a substantially cylindrical elongated bar having a longitudinal axis, first and second axial ends and an intermediate section extending between the axial ends. The first and second axial ends each comprise internally-threaded sections disposed substantially along the longitudinal axis of the weight bar for threadably receiving an externally-threaded end of a dumbbell. The internally-threaded sections of the first and second axial ends each comprise threads having substantially flat thread ends.
    Type: Application
    Filed: November 12, 2004
    Publication date: May 18, 2006
    Inventors: Cesar Cappellini, Vu Dang