Patents by Inventor Qiaoqiao Sun

Qiaoqiao Sun 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).

  • Supported metal oxide double active center polyethylene catalyst, process for preparing the same and use thereof
    Patent number: 9725530
    Abstract: The present invention relates to a supported hybrid vanadium-chromium-based catalyst, characterized in the catalyst is supported on a porous inorganic carrier and a V active site and a inorganic Cr active site are present on the porous inorganic carrier at the same time. The present invention further relates to a process for producing a supported hybrid vanadium-chromium-based catalyst. The invention also provides the preparation method of the catalyst, titanium or fluorine compounds, vanadium salt and chromium salt according to the proportion, different methods of sequence and load on the inorganic carrier, after high temperature roasting, still can further add organic metal catalyst promoter prereduction activation treatment on it. The catalyst of the present invention can be used for producing ethylene homopolymers and ethylene/?-olefin copolymers.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: August 8, 2017
    Assignee: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Ruihua Cheng, Boping Liu, Xin Xue, Yun He, Xuan Dong, Xuelian He, Zhen Liu, Weiwei Liu, Lisong Wang, Qiaoqiao Sun
  • SUPPORTED METAL OXIDE DOUBLE ACTIVE CENTER POLYETHYLENE CATALYST, PROCESS FOR PREPARING THE SAME AND USE THEREOF
    Publication number: 20150065667
    Abstract: The present invention relates to a supported hybrid vanadium-chromium-based catalyst, characterized in the catalyst is supported on a porous inorganic carrier and a V active site and a inorganic Cr active site are present on the porous inorganic carrier at the same time. The present invention further relates to a process for producing a supported hybrid vanadium-chromium-based catalyst. The invention also provides the preparation method of the catalyst, titanium or fluorine to compounds, vanadium salt and chromium salt according to the proportion, different methods of sequence and load on the inorganic carrier, after high temperature roasting, still can further add organic metal catalyst promoter prereduction activation treatment on it. The catalyst of the present invention can be used for producing ethylene homopolymers and ethylene/?-olefin copolymers.
    Type: Application
    Filed: April 19, 2013
    Publication date: March 5, 2015
    Applicant: East China University of Science and Technology
    Inventors: Ruihua Cheng, Boping Liu, Xin Xue, Yun He, Xuan Dong, Xuelian He, Zhen Liu, Weiwei Liu, Lisong Wang, Qiaoqiao Sun