Composite ion exchange membrane and method of making same
US-2018251616-A1 · Sep 6, 2018 · US
Anion exchange polymers and anion exchange membranes incorporating same
US11173456B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11173456-B2 |
| Application number | US-201715448734-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 3, 2017 |
| Priority date | Mar 3, 2016 |
| Publication date | Nov 16, 2021 |
| Grant date | Nov 16, 2021 |
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- Title
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Abstract
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An anion exchange membrane is made by mixing 2 trifluoroMethyl Ketone [nominal] (1.12 g, 4.53 mmol), 1 Biphenyl (0.70 g, 4.53 mmol), methylene chloride (3.0 mL), trifluoromethanesulfonic acid (TFSA) (3.0 mL) to produce a pre-polymer. The pre-polymer is then functionalized to produce an anion exchange polymer. The pre-polymer may be functionalized with trimethylamine in solution with water. The pre-polymer may be imbibed into a porous scaffold material, such as expanded polytetrafluoroethylene to produce a composite anion exchange membrane.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of making a composite anion exchange membrane comprising the steps of: a) mixing the following components: i) 2 trifluoromethyl ketone; ii) 1 biphenyl; iii) methylene chloride; and iv) trifluoromethanesulfonic acid, for a mixing time and temperature to produce a pre-polymer, b) providing a porous scaffold; c) dissolving the pre-polymer in an imbibing solution comprising methanol to produce a solution of the pre-polymer; and d) combining the pre-polymer solution and the porous scaffold by imbibing and subsequently functionalizing the pre-polymer; and e) drying the functionalized pre-polymer solution to produce a composite anion exchange membrane. 2. The method of making a composite anion exchange membrane of claim 1 , wherein the step of functionalizing comprises exposing the pre-polymer to trimethylamine in a solution with water. 3. The method of making a composite anion exchange membrane of claim 1 , wherein the porous scaffold is an expanded polytetrafluoroethylene membrane.
Assignees
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Classifications
Polymer pretreatment in the casting solutions · CPC title
- B01D71/80Primary
Block polymers · CPC title
alkane-based · CPC title
Ion-conducting additives, e.g. ion-conducting particles, heteropolyacids, metal phosphate or polybenzimidazole with phosphoric acid · CPC title
Ion-exchange membranes · CPC title
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- What does patent US11173456B2 cover?
- An anion exchange membrane is made by mixing 2 trifluoroMethyl Ketone [nominal] (1.12 g, 4.53 mmol), 1 Biphenyl (0.70 g, 4.53 mmol), methylene chloride (3.0 mL), trifluoromethanesulfonic acid (TFSA) (3.0 mL) to produce a pre-polymer. The pre-polymer is then functionalized to produce an anion exchange polymer. The pre-polymer may be functionalized with trimethylamine in solution with water. The …
- Who is the assignee on this patent?
- Xergy Inc
- What technology area does this patent fall under?
- Primary CPC classification B01D71/80. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Nov 16 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).