公开(公告)号：US20190382353A1

公开(公告)日：2019-12-19

申请号：US16321414

申请日：2017-07-29

Applicant: Simon Fraser University

Inventor： Steven Holdcroft ,  Jiantao Fan ,  Andrew Wright ,  Benjamin Britton ,  Thomas Weissbach ,  Timothy James Peckham ,  Jonathan William Ward

IPC: C07D233/64 ,  A61P31/00

Abstract: Provided herein are imidazolium polymers having steric hindrance at the 4-position of the imidazole moieties in the polymeric chain. The sterically-protected, N-methylated imidazolium polymers exhibit hydroxide stability in concentrated caustic solutions at elevated temperatures, such as at 100° C. and higher.

公开(公告)号：US11299464B2

公开(公告)日：2022-04-12

申请号：US16321414

申请日：2017-07-29

Applicant: Simon Fraser University

Inventor： Steven Holdcroft ,  Jiantao Fan ,  Andrew Wright ,  Benjamin Britton ,  Thomas Weissbach ,  Timothy James Peckham ,  Jonathan William Ward

IPC: C07D233/64 ,  A61P31/00

Abstract: Provided herein are imidazolium polymers having steric hindrance at the 4-position of the imidazole moieties in the polymeric chain. The sterically-protected, N-methylated imidazolium polymers exhibit hydroxide stability in concentrated caustic solutions at elevated temperatures, such as at 100° C. and higher.