US 12,227,627 B2
Polybenzimidazole films
Laura A. Murdock, Columbia, SC (US); Lihui Wang, West Columbia, SC (US); Fei Huang, Columbia, SC (US); and Brian C. Benicewicz, Columbia, SC (US)
Assigned to UNIVERSITY OF SOUTH CAROLINA, Columbia, SC (US)
Filed by UNIVERSITY OF SOUTH CAROLINA, Columbia, SC (US)
Filed on Dec. 11, 2023, as Appl. No. 18/535,450.
Application 18/535,450 is a continuation of application No. 17/522,160, filed on Nov. 9, 2021, granted, now 11,884,787.
Application 17/522,160 is a continuation of application No. 16/569,983, filed on Sep. 13, 2019, granted, now 11,180,621, issued on Nov. 23, 2021.
Claims priority of provisional application 62/731,152, filed on Sep. 14, 2018.
Claims priority of provisional application 62/731,156, filed on Sep. 14, 2018.
Prior Publication US 2024/0182656 A1, Jun. 6, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C08J 5/22 (2006.01); B01D 67/00 (2006.01); B01D 69/10 (2006.01)
CPC C08J 5/2256 (2013.01) [B01D 67/00111 (2022.08); B01D 67/00135 (2022.08); B01D 67/0093 (2013.01); B01D 69/10 (2013.01); B01D 2323/30 (2013.01); B01D 2323/40 (2013.01); B01D 2325/0283 (2022.08); B01D 2325/42 (2013.01); C08J 2379/04 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A membrane comprising a polybenzimidazole, wherein the membrane is free of organic solvent and the membrane exhibits a tensile stress at break of at least 25 MPa after drying.