Granted Patent
B2
US 12,623,212 · App. 18/229,427 · Granted May 12, 2026
Physically reinforced structured organic film (SOF) anion exchange membranes (AEMs)
Assignee:
XEROX CORPORATION
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Abstract
A structured organic film (SOF) composite is disclosed, including a structured organic film (SOF), which may include a plurality of segments; a plurality of linkers, where at least one of the plurality of linkers connects at least one of the plurality of segments. The composite also includes a polymer additive incorporated into the SOF. The polymer additive is present in the SOF in a plurality of nanodomains, ranging in size from about 50 nm to about 1 micron. The polymer additive may include a polysulfone. The polysulfone can be poly(oxy-1,4-phenylenesulfonyl-1,4-phenylene). The polymer additive is present in an amount of from about 5 wt % to about 25 wt % based on a total weight of the SOF composite. The structured organic film (SOF) composite may include an ionic segment or ionic capping segment.
Claims (30)
1 . A structured organic film (SOF) composite, comprising:
a structured organic film (SOF), comprising:
a plurality of segments;
a plurality of linkers, wherein at least one of the plurality of linkers connects at least one of the plurality of segments; and
a polymer additive comprising poly(oxy-1,4-phenylenesulfonyl-1,4-phenylene) incorporated into the SOF.
2 . The structured organic film (SOF) composite of claim 1 , wherein the polymer additive is present in the SOF in a plurality of nanodomains.
3 . The structured organic film (SOF) composite of claim 2 , wherein a size of the nanodomains is from about 50 nm to about 1 micron.
4 . The structured organic film (SOF) composite of claim 1 , wherein the polymer additive further comprises a polyvinyl alcohol.
5 . The structured organic film (SOF) composite of claim 1 , wherein the polymer additive is present in an amount of from about 5 wt % to about 25 wt % based on a total weight of the SOF composite.
6 . The structured organic film (SOF) composite of claim 1 , further comprising an ionic segment.
7 . The structured organic film (SOF) composite of claim 1 , further comprising an ionic capping segment.
8 . The structured organic film (SOF) composite of claim 1 , wherein a thickness of the SOF is from about 250 nm to about 500 μm.
9 . The structured organic film (SOF) composite of claim 1 , wherein the structured organic film (SOF) has an ion exchange capacity (IEC) of from about 0.25 mEq/g to about 5.00 mEq/g.
10 . The structured organic film (SOF) composite of claim 1 , wherein the structured organic film (SOF) has an electrical conductivity of from about 15 mS/cm to about 50 mS/cm.
11 . An ion-exchange membrane, comprising the structured organic film (SOF) composite of claim 1 .
12 . The ion-exchange membrane of claim 11 , wherein the structured organic film (SOF) composite is free-standing.
13 . A structured organic film (SOF) composite, comprising:
a first domain comprising a first composition; and
a second domain comprising a second composition and incorporated into the first domain; and wherein:
the first composition comprises a plurality of segments, and a plurality of linkers, wherein at least one of the plurality of linkers connects at least one of the plurality of segments; and
the second composition comprises a polymer additive comprising poly(oxy-1,4-phenylenesulfonyl-1,4-phenylene).
14 . The structured organic film (SOF) composite of claim 13 , wherein a size of the second domain is from about 50 nm to about 1 micron.
15 . The structured organic film (SOF) composite of claim 13 , wherein at least one of the plurality of segments comprises:
16 . The structured organic film (SOF) composite of claim 13 , wherein at least one of the plurality of segments comprises a piperidinium-based quaternary ammonium compound, a pyridinium-based quaternary ammonium compound or a combination thereof.
17 . The structured organic film (SOF) composite of claim 13 , further comprising a plurality of capping segments.
18 . The structured organic film (SOF) composite of claim 13 , wherein the plurality of capping segments comprises benzyl tris(2-hydroxyethyl) ammonium (BTHEA), N-hydroxyethyl-1,2,4,5-tetramethylimidazolium (NEtTMIm), or a combination thereof.
19 . A structured organic film (SOF) composite, comprising:
a plurality of segments; and
a plurality of linkers, wherein at least one of the plurality of linkers connects at least one of the plurality of segment; wherein at least one or more of the plurality of segments comprises N,N,N′,N′-tetrakis-[(4-hydroxymethyl) phenyl]-biphenyl-4,4′-diamine (THM-TBD); and
a polysulfone comprising poly(oxy-1,4-phenylenesulfonyl-1,4-phenylene) incorporated into the SOF.
Assignments (6)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Oct 31, 2025
From: XEROX CORPORATION
To: GENESEE VALLEY INNOVATIONS, LLC
Reel/Frame 073225/0116 →
SECOND LIEN NOTES PATENT SECURITY AGREEMENT
Recorded Jul 2, 2025
From: XEROX CORPORATION
To: U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 071785/0550 →
FIRST LIEN NOTES PATENT SECURITY AGREEMENT
Recorded Apr 11, 2025
From: XEROX CORPORATION
To: U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 070824/0001 →
SECURITY INTEREST
Recorded Feb 13, 2024
From: XEROX CORPORATION
To: CITIBANK, N.A., AS COLLATERAL AGENT
Reel/Frame 066741/0001 →
SECURITY INTEREST
Recorded Nov 20, 2023
From: XEROX CORPORATION
To: JEFFERIES FINANCE LLC, AS COLLATERAL AGENT
Reel/Frame 065628/0019 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Aug 2, 2023
From: CLARIDGE, ROBERT
To: XEROX CORPORATION
Reel/Frame 064469/0868 →
Continuity (1)
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