Patents by Inventor Weihuan Huang

Weihuan Huang 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).

  • Catalyst for homopolymerizing and copolymerizing propylene and its preparation and use
    Patent number: 8470941
    Abstract: A catalyst for homopolymerizing and copolymerizing propylene and its preparation and use. The catalyst component includes titanium compound containing at least one Ti-halogen bond and at least two kinds of electron donor compounds A and B supported on MgCl2.nROH adduct, wherein the electron donor compound A is a compound of formula (I), the electron donor compound B is ester or ether compound; the molar ratio between compound A and compound B is 0.1-5; the molar ratio between the total amounts of the two kinds of electron donors and MgCl2.nROH is 0.01-1, based on the amount of MgCl2.nROH; and the molar ration between the titanium compound containing Ti-halogen bond and MgCl2.nROH is 1-200. The catalyst has high activity, high stereospecificity and good copolymerization performance. In addition, the morphology of the polymer obtained therefrom is good.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: June 25, 2013
    Assignee: PetroChina Company Limited
    Inventors: Jianjun Yi, Baozuo Yin, Chunming Cui, Zhifei Li, Liang Cui, Huashu Li, Weihuan Huang, Jianying Zhang, Li Wang
  • CATALYST FOR HOMOPOLYMERIZING AND COPOLYMERIZING PROPYLENE AND ITS PREPARATION AND USE
    Publication number: 20110207900
    Abstract: A catalyst for homopolymerizing and copolymerizing propylene and its preparation and use. The catalyst component includes titanium compound containing at least one Ti-halogen bond and at least two kinds of electron donor compounds A and B supported on MgCl2.nROH adduct, wherein the electron donor compound A is a compound of formula (I), the electron donor compound B is ester or ether compound; the molar ratio between compound A and compound B is 0.1-5; the molar ratio between the total amounts of the two kinds of electron donors and MgCl2.nROH is 0.01-1, based on the amount of MgCl2.nROH; and the molar ration between the titanium compound containing Ti-halogen bond and MgCl2.nROH is 1-200. The catalyst has high activity, high stereospecificity and good copolymerization performance. In addition, the morphology of the polymer obtained therefrom is good.
    Type: Application
    Filed: December 2, 2008
    Publication date: August 25, 2011
    Inventors: Jianjun Yi, Baozuo Yin, Chunming Cui, Zhifei Li, Liang Cui, Huashu Li, Weihuan Huang, Jianying Zhang, Li Wang