Patents by Inventor Siyuan Zhao

Siyuan Zhao 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 olefin polymerization and use of the same
    Publication number: 20060142146
    Abstract: The present application discloses a catalyst for olefin polymerization, comprising a product of the following components: (A) solid titanium-containing catalyst component comprising magnesium, titanium and halogen as essential components; (B) organo-aluminum compound catalyst component, and (C) silicon ether compound catalyst component, the silicon ether compound being represented by a general formula (I): wherein R1-R12 and A are as defined in the description.
    Type: Application
    Filed: December 23, 2004
    Publication date: June 29, 2006
    Inventors: Mingzhi Gao, Lunjia Xie, Xiaodong Wang, Siyuan Zhao, Jing Ma, Haitao Liu, Tianyi Li, Zhufang Sun
  • Cyclopentane carboxylate compounds, process and intermediates for preparing the same and use thereof
    Publication number: 20060094843
    Abstract: The present invention discloses cyclopentane carboxylate compounds. The 1-hydrocarbyl-2-acyloxy-cyclopentane carboxylates according to the invention have a general formula (I): wherein groups R1, R2 and R3, which are identical or different, are independently selected from the group consisting of linear or branched C1-C20alkyl, C3-C20cycloalkyl, C6-C20aryl, C7-C20alkaryl and C7-C20aralkyl. The present invention also discloses a process as well as intermediate compounds for preparing the compounds of formula (I), and use of the compounds (I) as electron donor in the preparation of catalysts for propylene polymerization.
    Type: Application
    Filed: October 27, 2005
    Publication date: May 4, 2006
    Applicants: China Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry
    Inventors: Lunjia Xie, Hongbin Du, Zhibiao Hu, Tianyi Zhang, Siyuan Zhao, Xinsheng Wang
  • Silicon ether compound, a method for the preparation thereof and use thereof
    Patent number: 6822109
    Abstract: The present invention relates to a silicon ether compound having general formula (I): wherein, R and R1-R10 groups, which may be Identical or different, represent hydrogen, halogen, C1-C20 linear or branched alkyl, C3-C20 cycloalkyl, C8-C20 aryl, C7-C20 alkaryl or C7-C20 aralkyl group, and two or more R groups can be linked to form saturated or unsaturated condensed ring structure which is optionally substituted by a group having the same meanings with that of R1, R and R1-R10 groups optionally contain one or more hetero-atoms replacing carbon atom, hydrogen atom or the both, said heteroatom is selected from the group consisting of nitrogen, oxygen, sulfur, silicon, phosphorus and halogen atom, and A represents carbon atom or silicon atom. The present invention also relates to a method for the preparation of the silicon ether compounds of general formula (I) and a process for polymerization of olefins.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: November 23, 2004
    Assignees: China Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation
    Inventors: Lunjia Xie, Mingzhi Gao, Tianyi Li, Siyuan Zhao, Mingsen Zhang, Changjiang Wu
  • Silicon ether compound, a method for the preparation thereof and use thereof
    Publication number: 20040106814
    Abstract: The present invention relates to a silicon ether compound having general formula (I): 1
    Type: Application
    Filed: July 16, 2003
    Publication date: June 3, 2004
    Inventors: Lunjia Xie, Mingzhi Gao, Tianyi Li, Siyuan Zhao, Mingsen Zhang, Changjiang Wu