Patents by Inventor Dongwen ZHONG

Dongwen ZHONG 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).

  • Method for preparing high viscosity index poly-alpha-olefin
    Patent number: 12365848
    Abstract: A method for preparing a high viscosity index poly-?-olefin subjects ?-olefin to a polymerization reaction in the presence of a metallocene catalyst to obtain a poly-?-olefin. The polymerization reaction is carried out in the absence of a solvent, and the metallocene catalyst is formed of, or is formed by interaction between, a metallocene compound and an activator.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: July 22, 2025
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SHANGHAI RESEARCH INSTITUTE OF CHEMICAL INDUSTRY CO., LTD.
    Inventors: Zhaolin Yin, Yucai Cao, Dongwen Zhong, Shengbiao Liang, Yongqing Li, Zhenyu Liu, Lujian Li, Xiaofeng Ye, Weizhe Wang, Chen Ni, Jie Li, Fan Wang, Guoyu Liu, Shibing Chen, Xionghua Chen, Wenjun Jiang, Zhenxu Lu, Si Tan, Ruizhen Lu
  • METHOD FOR PREPARING HIGH VISCOSITY INDEX POLY-ALPHA-OLEFIN
    Publication number: 20220403278
    Abstract: A method for preparing a high viscosity index poly-?-olefin subjects ?-olefin to a polymerization reaction in the presence of a metallocene catalyst to obtain a poly-?-olefin. The polymerization reaction is carried out in the absence of a solvent, and the metallocene catalyst is formed of, or is formed by interaction between, a metallocene compound and an activator.
    Type: Application
    Filed: October 30, 2020
    Publication date: December 22, 2022
    Inventors: Zhaolin YIN, Yucai CAO, Dongwen ZHONG, Shengbiao LIANG, Yongqing LI, Zhenyu LIU, Lujian LI, Xiaofeng YE, Weizhe WANG, Chen NI, Jie LI, Fan WANG, Guoyu LIU, Shibin CHEN, Xionghua CHEN, Wenjun JIANG, Zhenxu LU, Si TAN, Ruizhen LU
  • METALLOCENE COMPOUND, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
    Publication number: 20220389133
    Abstract: A metallocene compound having a structure shown by formula (I). A functional group connected to a bridging atom of the metallocene compound is an amine-substituted group and/or a metallocene-substituted group and/or a substituted metallocene group. A metallocene catalyst containing the metallocene compound has high catalytic activity, and can synthesize metallocene polypropylene having high isotacticity.
    Type: Application
    Filed: October 30, 2020
    Publication date: December 8, 2022
    Inventors: Zhaolin YIN, Yuanhong MAO, Yucai CAO, Shengbiao LIANG, Hongping ZHU, Xiaofeng YE, Chen NI, Zhikang CHEN, Dongwen ZHONG, Sha SONG, Wenjun JIANG, Zhenyu LIU