Patents by Inventor Liqiong LUO

Liqiong LUO 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).

  • Publication number: 20240270883
    Abstract: The present invention relates to a covalent organic framework which is a two-dimensional polymer formed by repeatedly arranging structural units represented by formula I or formula II and bonding same by means of covalent bonds. The present invention also relates to a catalyst, preparation methods for the covalent organic framework and the catalyst, and applications of the covalent organic framework and the catalyst in catalyzing olefin polymerization. The covalent organic framework can be used as a support to control the stereoregular polymerization of olefins in a confined space. The catalyst has high catalytic activity and good high-temperature stability, and widens the range of types of olefin polymerization catalysts.
    Type: Application
    Filed: December 24, 2020
    Publication date: August 15, 2024
    Applicant: ZHEJIANG UNIVERSITY
    Inventors: Pingwei LIU, Wen-Jun WANG, Liqiong LUO, Ziyang ZHANG, Bo-Geng LI
  • Publication number: 20240166774
    Abstract: A method for preparing a supported olefin polymerization catalyst, comprising: step 1, activating a COF at 0° C.-800° C. for 0.1-48 hours under inert atmosphere or vacuum protection; optionally, step 2, reacting the activated COF with an auxiliary agent in a reaction medium at a temperature of 5° C.-120° C. under inert atmosphere or vacuum protection, and performing solid-liquid separation to obtain a solid phase material, wherein the auxiliary agent is selected from a metal alkyl compound, boron halothane, an alkyl aluminum oxide, a modified methyl aluminoxane, a Lewis acid, and a Grignard reagent; and step 3, under inert atmosphere or vacuum protection, reacting the solid phase material with the olefin polymerization catalyst in a reaction medium at ?30° C.-150° C., performing solid-liquid separation, and collecting the solid phase material as the supported olefin polymerization catalyst. A supported olefin polymerization catalyst and an application thereof.
    Type: Application
    Filed: December 24, 2020
    Publication date: May 23, 2024
    Applicant: ZHEJIANG UNIVERSITY
    Inventors: Wen-Jun WANG, Pingwei LIU, Liqiong LUO, Song WANG, Bo-Geng LI