Patents by Inventor Yanlong Qian

Yanlong Qian 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).

  • Metallocene complexes, their synthesis and use in catalyst systems for olefin polymerization
    Patent number: 7307177
    Abstract: A metallocene complex is represented by the the formula (CpR5)nMXk where Cp (each occurrence) is a cyclopentadienyl group; each of the five R substituents on the or each cyclopentadienyl group is independently selected from hydrogen, C1 to C30 substituted or unsubstituted hydrocarbyl, halohydrocarbyl, silylhydrocarbyl or silylhalohydrocarbyl, wherein two adjacent R substituents may be joined to form part of a saturated, partially unsaturated or aromatic monocyclic or polycyclic ring structure, and SiR?2NR?2 where each of the two R? substituents is independently selected from hydrogen, C1 to C30 substituted or unsubstituted hydrocarbyl, halohydrocarbyl, silylhydrocarbyl or silylhalohydrocarbyl, wherein two adjacent R? substituents may be joined to form part of a saturated, partially unsaturated or aromatic monocyclic or polycyclic ring structure, and each of the two R? substituents is independently selected from C2 to C30 substituted or unsubstituted hydrocarbyl, halohydrocarbyl, silylhydrocarbyl or silylhal
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: December 11, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jiling Huang, legal representative, Jo Ann M. Canich, Catalina L. Coker, Yanlong Qian, deceased
  • Metallocene complexes, their synthesis and use in catalyst systems for olefin polymerization
    Publication number: 20060135353
    Abstract: A metallocene complex is represented by the the formula (CpR5)nMXk where Cp (each occurrence) is a cyclopentadienyl group; each of the five R substituents on the or each cyclopentadienyl group is independently selected from hydrogen, C1 to C30 substituted or unsubstituted hydrocarbyl, halohydrocarbyl, silylhydrocarbyl or silylhalohydrocarbyl, wherein two adjacent R substituents may be joined to form part of a saturated, partially unsaturated or aromatic monocyclic or polycyclic ring structure, and SiR?2NR?2 where each of the two R? substituents is independently selected from hydrogen, C1 to C30 substituted or unsubstituted hydrocarbyl, halohydrocarbyl, silylhydrocarbyl or silylhalohydrocarbyl, wherein two adjacent R? substituents may be joined to form part of a saturated, partially unsaturated or aromatic monocyclic or polycyclic ring structure, and each of the two R? substituents is independently selected from C2 to C30 substituted or unsubstituted hydrocarbyl, halohydrocarbyl, silylhydrocarbyl or silylha
    Type: Application
    Filed: November 22, 2005
    Publication date: June 22, 2006
    Inventors: Yanlong Qian, Jiling Huang, Jo Ann Canich, Catalina Coker
  • Bis-Schiff base ligand-containing mono-metallocene olefin polymerization catalyst, its preparation process and application
    Patent number: 6747105
    Abstract: A catalyst for olefin polymerization having the following structural formula (I): wherein R1 is selected from the group consisting of hydrogen, C1-C12 alkyl, C1-C12 alkoxy, or C6-C12 aryl, R2 and R2′ are respectively selected from hydrogen and C1-C4 alkyl, R3 is selected from the group consisting of hydrogen, C1-C12 alkyl, C1-C12 alkoxy and C6-C12 aryl, and M is selected from Ti, Zr, and Hf The catalyst is suitable for olefin polymerization to yield polymerized products with high molecular weight and high insertion rate of comonomers.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: June 8, 2004
    Assignees: China Petroleum & Chemical Corporation, Research Institute of Petroleum Processing, Sinopec, East China University of Science and Technology
    Inventors: Wei Chen, Yanlong Qian, Gang Zheng, Bing Lian, Jiling Huang
  • Bis-Schiff base ligand-containing mono-metallocene olefin polymerization catalyst, its preparation process and application
    Publication number: 20030096927
    Abstract: A catalyst for olefin polymerization having the following structural formula (I): 1
    Type: Application
    Filed: September 27, 2002
    Publication date: May 22, 2003
    Inventors: Wei Chen, Yanlong Qian, Gang Zheng, Bing Lian, Jiling Huang