Patents by Inventor Yuping Yuan

Yuping Yuan 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).

  • Catalysts for synthesizing a polypropylene with a wide molecular weight distribution and use of the same
    Patent number: 7723449
    Abstract: The present invention relates to a catalyst for synthesizing a polypropylene with a wide molecular weight distribution and use of the same. The catalyst comprises magnesium halide, titanium-containing compound, and an organic phosphate type electron donor compound. By the catalyst according to the present invention, a propylene polymer with a wide molecular weight distribution, easily controllable isotacticity and good processing properties can be synthesized.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: May 25, 2010
    Assignee: Changchun Institute of Applied Chemistry Chinese Academy of Sciences
    Inventors: Chunyu Zhang, Hongguang Cai, Bin Chen, Yuping Yuan, Qiaofeng Zhang, Weimin Dong, Xuequan Zhang
  • Catalyst for synthesizing a polypropylene with a wide molecular weight distribution and use of the same
    Publication number: 20090023881
    Abstract: The present invention relates to a catalyst for synthesizing a polypropylene with a wide molecular weight distribution and use of the same. The catalyst comprises magnesium halide, titanium-containing compound, and an organic phosphate type electron donor compound. By the catalyst according to the present invention, a propylene polymer with a wide molecular weight distribution, easily controllable isotacticity and good processing properties can be synthesized.
    Type: Application
    Filed: July 3, 2008
    Publication date: January 22, 2009
    Inventors: Chunyu Zhang, Hongguang Cai, Bin Chen, Yuping Yuan, Qiaofeng Zhang, Weimin Dong, Xuequan Zhang