Patents by Inventor Xianchuan Xie

Xianchuan Xie 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).

  • Patent number: 11339227
    Abstract: Provided is a novel multifunctional cyclodextrin polymer capable of adsorbing the organic pollutants dissolved in water super-fast. A cyclodextrin polymer with a three-dimensional network structure and quaternary ammonium salt functional groups is obtained by mixing and crosslinking a cyclodextrin, a rigid crosslinking agent, a non-rigid crosslinking agent and a quaternary ammonium salt at certain temperature. The polymer is capable of adsorbing the organic pollutants dissolved in water at an ultra-fast rate, and the polymer after adsorption is easily regenerated and can be repeatedly used multiple times without causing a decrease in the adsorption property.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: May 24, 2022
    Inventors: Xianchuan Xie, Xuejiao Hu, Guizhou Xu
  • Patent number: 11236187
    Abstract: The disclosure provides an amphiphilic porous cyclodextrin polymer: cyclodextrin is grafted with aromatic molecules, and then alkylated with biphenyl benzylidene chloride and p-xylylene dichloride through Friedel-Crafts reaction, to obtain a porous polymer with an ultrahigh specific surface area. This material has very high adsorption capacity and can be reused for simple regeneration. Because the hydroxy groups of cyclodextrin are partially retained, the hydrophilicity of the material surface is improved, allowing the adsorption rate to become faster. Moreover, there are a variety of adsorption mechanisms, and hydrophobic and hydrophilic pollutants can be adsorbed simultaneously.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: February 1, 2022
    Assignee: NANJING UNIVERSITY
    Inventors: Xianchuan Xie, Yizhou Tu
  • Publication number: 20210179739
    Abstract: Provided is a novel multifunctional cyclodextrin polymer capable of adsorbing the organic pollutants dissolved in water super-fast. A cyclodextrin polymer with a three-dimensional network structure and quaternary ammonium salt functional groups is obtained by mixing and crosslinking a cyclodextrin, a rigid crosslinking agent, a non-rigid crosslinking agent and a quaternary ammonium salt at certain temperature. The polymer is capable of adsorbing the organic pollutants dissolved in water at an ultra-fast rate, and the polymer after adsorption is easily regenerated and can be repeatedly used multiple times without causing a decrease in the adsorption property.
    Type: Application
    Filed: November 14, 2019
    Publication date: June 17, 2021
    Inventors: Xianchuan XIE, Xuejiao HU, Guizhou XU
  • Publication number: 20210147600
    Abstract: The disclosure provides an amphiphilic porous cyclodextrin polymer: cyclodextrin is grafted with aromatic molecules, and then alkylated with biphenyl benzylidene chloride and p-xylylene dichloride through Friedel-Crafts reaction, to obtain a porous polymer with an ultrahigh specific surface area. This material has very high adsorption capacity and can be reused for simple regeneration. Because the hydroxy groups of cyclodextrin are partially retained, the hydrophilicity of the material surface is improved, allowing the adsorption rate to become faster. Moreover, there are a variety of adsorption mechanisms, and hydrophobic and hydrophilic pollutants can be adsorbed simultaneously.
    Type: Application
    Filed: July 27, 2020
    Publication date: May 20, 2021
    Inventors: Xianchuan XIE, Yizhou TU
  • Patent number: 10982014
    Abstract: A novel cyclodextrin polymer with ultra-fast adsorption performance is provided. A cyclodextrin polymer having a three-dimensional network structure is obtained by mixing and crosslinking a cyclodextrin with a rigid crosslinking agent and a non-rigid crosslinking agent at a certain temperature. The polymer is capable of adsorbing a plurality of organic pollutants in water at an ultra-fast rate, and the polymer after adsorption is easily regenerated by simple washing at a normal temperature, and is repeatedly used without causing a decrease in adsorption performance.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: April 20, 2021
    Assignee: NANJING UNIVERSITY
    Inventors: Xianchuan Xie, Guizhou Xu, Long Qin
  • Publication number: 20190375858
    Abstract: A novel cyclodextrin polymer with ultra-fast adsorption performance is provided. A cyclodextrin polymer having a three-dimensional network structure is obtained by mixing and crosslinking a cyclodextrin with a rigid crosslinking agent and a non-rigid crosslinking agent at a certain temperature. The polymer is capable of adsorbing a plurality of organic pollutants in water at an ultra-fast rate, and the polymer after adsorption is easily regenerated by simple washing at a normal temperature, and is repeatedly used without causing a decrease in adsorption performance.
    Type: Application
    Filed: June 7, 2019
    Publication date: December 12, 2019
    Inventors: Xianchuan Xie, Guizhou Xu, Long Qin