Patents by Inventor Kunzheng Liu

Kunzheng Liu 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).

  • Components and catalysts for the (co)polymerization of olefins
    Patent number: 6703339
    Abstract: A catalyst component for the (co)polymerization of olefins is provided. The catalyst comprises titanium, magnesium halogen and a mixed electron-donor and a catalyst for the (co)polymerization of olefins comprising:(A) the catalyst component; (B) an organic aluminum compound; and (C) an organic silicon compound. A polymer with high and adjustable stereospecificity and broad molecular weight distribution can be prepared by using the catalyst.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: March 9, 2004
    Assignees: China Petro-Chemical Corporation, Beijing Research Institute of Chemical Industry, Sinopec
    Inventors: Zhulan Li, Juxiu Yang, Mingzhi Gao, Yun Zhao, Bingquan Mao, Aichun Yang, Chunmin Ding, Wenbo Song, Kunzheng Liu
  • Components and catalysts for the (co) polymerization of olefins
    Publication number: 20020010081
    Abstract: The present invention relates to a catalyst component for the (co)polymerization of olefins comprising titanium, magnesium, halogen and a mixed electron-donor and a catalyst for the (co)polymerization of olefins comprisin: (A) the catalyst component; (B) an organic aluminum compound; and (C) an organic silicon compound. The polymer with high and adjustable stereospecificity and broad molecular weight distribution can be prepared by using the catalyst.
    Type: Application
    Filed: December 6, 2000
    Publication date: January 24, 2002
    Inventors: Zhulan Li, Juxiu Yang, Mingzhi Gao, Yun Zhao, Bingquan Mao, Aichun Yang, Chunmin Ding, Wenbo Song, Kunzheng Liu