Patents by Inventor Linmei Wu

Linmei Wu 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).

  • Olefin polymerization catalyst and preparation method and use thereof
    Patent number: 8404789
    Abstract: An olefin polymerization catalyst and preparation method and use thereof are provided. The catalyst component comprises (1) an active magnesium halide, (2) a titanium compound containing at least one Ti-halide bond supported thereon, and (3) an electron donor selected from the group consisting of one or more sulfonyl-containing compounds having the following formula. There are two methods for preparing such solid catalyst component: I) treating the active magnesium halide (1) particles with alkylaluminum, subsequently adding the electron donor (3), treating it with the solution of titanium compound (2) one or more times; II) adding spherical magnesium chloride alcoholate particles to the solution of titanium compound (2), subsequently adding the electron donor (3), treating it with the solution of titanium compound (2) one or more times. The catalyst system comprises such solid catalyst component, a co-catalyst (alkylaluminum compound) and an external electron donor.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: March 26, 2013
    Assignee: Petrochina Company Limited
    Inventors: Jianjun Yi, Chunming Cui, Huashu Li, Baozuo Yin, Jianying Zhang, Xiaomei Lang, Linmei Wu
  • OLEFIN POLYMERIZATION CATALYST AND PREPARATION METHOD AND USE THEREOF
    Publication number: 20100184930
    Abstract: An olefin polymerization catalyst and preparation method and use thereof are provided. The catalyst component comprises (1) an active magnesium halide, (2) a titanium compound containing at least one Ti-halide bond supported thereon, and (3) an electron donor selected from the group consisting of one or more sulfonyl-containing compounds having the following formula. There are two methods for preparing such solid catalyst component: I) treating the active magnesium halide (1) particles with alkylaluminum, subsequently adding the electron donor (3), treating it with the solution of titanium compound (2) one or more times; II) adding spherical magnesium chloride alcoholate particles to the solution of titanium compound (2), subsequently adding the electron donor (3), treating it with the solution of titanium compound (2) one or more times. The catalyst system comprises such solid catalyst component, a co-catalyst (alkylaluminum compound) and an external electron donor.
    Type: Application
    Filed: May 15, 2008
    Publication date: July 22, 2010
    Applicant: Petrochina Company Limited
    Inventors: Jianjun Yi, Chunming Cui, Huashu Li, Baozuo Yin, Jianying Zhang, Xiaomei Lang, Linmei Wu