US 11,969,722 B2
Anionic membranes incorporating functional additives
Bamdad Bahar, Georgetown, DE (US); and Taoli Gu, San Jose, CA (US)
Assigned to FFI Ionix IP, Inc., Wilmington, DE (US)
Filed by Xergy Inc., Harrington, DE (US)
Filed on Jun. 26, 2020, as Appl. No. 16/913,767.
Claims priority of provisional application 62/867,146, filed on Jun. 26, 2019.
Prior Publication US 2020/0406248 A1, Dec. 31, 2020
Int. Cl. B01D 53/22 (2006.01); B01D 69/02 (2006.01); B01D 69/10 (2006.01); B01D 69/12 (2006.01); B01D 71/72 (2006.01); B01J 23/42 (2006.01); B01J 41/09 (2017.01); B01J 41/10 (2006.01); B01J 41/13 (2017.01)
CPC B01J 41/13 (2017.01) [B01D 69/02 (2013.01); B01D 69/10 (2013.01); B01D 69/12 (2013.01); B01D 71/72 (2013.01); B01J 23/42 (2013.01); B01J 41/09 (2017.01); B01J 41/10 (2013.01); B01D 2325/02 (2013.01); B01D 2325/10 (2013.01); B01D 2325/42 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An anion exchange membrane comprising:
a) an anion exchange polymer comprising:
i) polyphenylenes homopolymer backbones with side chain consisting of hydrophilic side chains with a CF3 linkage to said backbone; and
ii) said hydrophilic side chains being linear hydrocarbon side chains having functional groups;
wherein the anion exchange polymer extends as a first surface layer on a first side and as a second surface layer on a second side, opposing said first side, of the anion exchange membrane;
b) a functional additive configured within the anion exchange membrane, between said first surface layer of said anion exchange polymer and said second surface layer of said anion exchange polymer, wherein the functional additive comprises a radical scavenger comprising polydopamine.