公开(公告)号：US20210054160A1

公开(公告)日：2021-02-25

申请号：US17082092

申请日：2020-10-28

Applicant: CASE WESTERN RESERVE UNIVERSITY

Inventor： Liang Yue ,  Vahab Solouki Bonab ,  Ammar Patel ,  Dian Yuan ,  Vahid Karimkhani ,  Ica Manas-Zloczower

IPC: C08J11/04 ,  C08J3/205 ,  C08J3/20 ,  B01J31/12 ,  C08K3/04 ,  C08J11/16

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.

公开(公告)号：US11746208B2

公开(公告)日：2023-09-05

申请号：US17082092

申请日：2020-10-28

Applicant: CASE WESTERN RESERVE UNIVERSITY

Inventor： Liang Yue ,  Vahab Solouki Bonab ,  Ammar Patel ,  Dian Yuan ,  Vahid Karimkhani ,  Ica Manas-Zloczower

IPC: C08J11/04 ,  C08J3/205 ,  C08J3/20 ,  B01J31/12 ,  C08K3/04 ,  C08J11/16

CPC classification number: C08J11/04 ,  B01J31/122 ,  C08J3/203 ,  C08J3/2053 ,  C08J11/16 ,  C08K3/041 ,  C08J2300/24 ,  C08J2363/02 ,  C08J2375/06 ,  C08K3/041 ,  C08L63/00 ,  C08K3/041 ,  C08L75/04

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.

公开(公告)号：US10822467B2

公开(公告)日：2020-11-03

申请号：US15964824

申请日：2018-04-27

Applicant: CASE WESTERN RESERVE UNIVERSITY

Inventor： Liang Yue ,  Vahab Solouki Bonab ,  Ammar Patel ,  Dian Yuan ,  Vahid Karimkhani ,  Ica Manas-Zloczower

IPC: C08J11/04 ,  C08J3/205 ,  C08J3/20 ,  B01J31/12 ,  C08K3/04 ,  C08J11/16

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.

公开(公告)号：US20180312657A1

公开(公告)日：2018-11-01

申请号：US15964824

申请日：2018-04-27

Applicant: CASE WESTERN RESERVE UNIVERSITY

Inventor： Liang Yue ,  Vahab Solouki Bonab ,  Ammar Patel ,  Dian Yuan ,  Vahid Karimkhani ,  Ica Manas-Zloczower

IPC: C08J11/04 ,  C08J3/205 ,  C08J3/20 ,  C08K3/04 ,  B01J31/12

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.