Patents by Inventor Dian Yuan

Dian Yuan 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: 11746208
    Abstract: Methods for recycling thermoset polymers, particularly by changing them into dynamic networks with the use of an appropriate catalyst solution which transforms the thermoset polymer into a vitrimer-like composition. The methods include the step of swelling a crosslinked thermoset polymer in a solution including a catalyst, whereby the catalyst diffuses into the thermoset polymer, in particular into the thermoset network. Upon removal of the liquid portion of the solution, such as solvent, the catalyst facilitates the occurrence of exchange reactions at elevated temperatures, rendering the system a dynamic network. The vitrimerized composition having the thermoset polymer and catalyst is recyclable and processable and thus suitable for many end uses.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: September 5, 2023
    Assignee: CASE WESTERN RESERVE UNIVERSITY
    Inventors: Liang Yue, Vahab Solouki Bonab, Ammar Patel, Dian Yuan, Vahid Karimkhani, Ica Manas-Zloczower
  • Publication number: 20210054160
    Abstract: Methods for recycling thermoset polymers, particularly by changing them into dynamic networks with the use of an appropriate catalyst solution which transforms the thermoset polymer into a vitrimer-like composition. The methods include the step of swelling a crosslinked thermoset polymer in a solution including a catalyst, whereby the catalyst diffuses into the thermoset polymer, in particular into the thermoset network. Upon removal of the liquid portion of the solution, such as solvent, the catalyst facilitates the occurrence of exchange reactions at elevated temperatures, rendering the system a dynamic network. The vitrimerized composition having the thermoset polymer and catalyst is recyclable and processable and thus suitable for many end uses.
    Type: Application
    Filed: October 28, 2020
    Publication date: February 25, 2021
    Inventors: Liang Yue, Vahab Solouki Bonab, Ammar Patel, Dian Yuan, Vahid Karimkhani, Ica Manas-Zloczower
  • Patent number: 10822467
    Abstract: Methods for recycling thermoset polymers, particularly by changing them into dynamic networks with the use of an appropriate catalyst solution which transforms the thermoset polymer into a vitrimer-like composition. The methods include the step of swelling a crosslinked thermoset polymer in a solution including a catalyst, whereby the catalyst diffuses into the thermoset polymer, in particular into the thermoset network. Upon removal of the liquid portion of the solution, such as solvent, the catalyst facilitates the occurrence of exchange reactions at elevated temperatures, rendering the system a dynamic network. The vitrimerized composition having the thermoset polymer and catalyst is recyclable and processable and thus suitable for many end uses.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: November 3, 2020
    Assignee: CASE WESTERN RESERVE UNIVERSITY
    Inventors: Liang Yue, Vahab Solouki Bonab, Ammar Patel, Dian Yuan, Vahid Karimkhani, Ica Manas-Zloczower
  • Publication number: 20180312657
    Abstract: Methods for recycling thermoset polymers, particularly by changing them into dynamic networks with the use of an appropriate catalyst solution which transforms the thermoset polymer into a vitrimer-like composition. The methods include the step of swelling a crosslinked thermoset polymer in a solution including a catalyst, whereby the catalyst diffuses into the thermoset polymer, in particular into the thermoset network. Upon removal of the liquid portion of the solution, such as solvent, the catalyst facilitates the occurrence of exchange reactions at elevated temperatures, rendering the system a dynamic network. The vitrimerized composition having the thermoset polymer and catalyst is recyclable and processable and thus suitable for many end uses.
    Type: Application
    Filed: April 27, 2018
    Publication date: November 1, 2018
    Inventors: Liang Yue, Vahab Solouki Bonab, Ammar Patel, Dian Yuan, Vahid Karimkhani, Ica Manas-Zloczower