membrane

Abstract

(1) R a and R b are each independently optionally substituted C 1~3 alkyl group or optionally substituted C 2~3 (2) R is an alkenyl group; a and R b form an optionally substituted five- or six-membered ring together with the positively charged nitrogen atom to which they are attached; (3) R a and R b One of them is an arbitrarily replaceable C 1~3 alkyl group or optionally substituted C 2~3 R is an alkenyl group a and R b The other is AR 1 -(CH2) n -N + together with the R group to form an optionally substituted 5- or 6-membered ring; or (4) R a is AR 1 -(CH2) n -N + R 1 and R 2 form an optionally substituted 5- or 6-membered ring together. b is N + -(CH2) n -AR 2 together with the group to form an optionally substituted 5- or 6-membered ring; X - is the anion; AR 1 and AR 2 each independently contains an aromatic group; (1') AR 1 and AR 2 (2') at least one of the monomers a of formula I contains a curable ethylenically unsaturated group; (2') monomer a of formula I contains at least two curable ethylenically unsaturated groups; and (3') an anion exchange membrane obtainable by curing the curable composition, wherein the ion exchange capacity (IEC) of the anion exchange membrane is less than 1.65 meq / g of dry membrane.

Claims

1. An anion exchange film obtainable by curing a curable composition, wherein the curable composition is (a) Monomer (a) of equation (I) AR １ -(CH ２ ) ｎ -N ＋ (R ａ R ｂ )-(CH ２ ) ｎ -AR ２ 、X － including formula (I), wherein Each n independently has a value of either 1 or 2; (i) R ａ and R ｂ Each of these is independently an optionally substituted C2-3 alkyl group or an optionally substituted C ２～３ It is an alkenyl group; or (ii) R ａ and R ｂ They form a optionally substituted five- or six-membered ring with the positively charged nitrogen atom to which they are bonded; or (iii) R ａ and R ｂ One of them may be arbitrarily substituted C １～３ C is an alkyl group or optionally substituted. ２～３ It is an alkenyl group, R ａ and R ｂ The other is formula AR １ - (CH ２ ) ｎ -N ＋ Together with the base, it forms a 5 or 6-membered ring which may be optionally substituted; or (iv)R ａ is formula AR １ - (CH ２ ) ｎ -N ＋ Together with the base, it forms a 5 or 6-membered ring which may be optionally substituted, R ｂ is, formula N ＋ - (CH ２ ) ｎ -AR ２ Together with the base, it forms a 5- or 6-membered ring which may be optionally substituted; X － is an anion; AR １ and AR ２ Each of them independently contains an aromatic group; (I) AR １ and AR ２ At least one of them comprises a curable ethylenically unsaturated group; (II) Monomer (a) of formula (I) comprises at least two curable ethylenically unsaturated groups; (III) The anion exchange membrane having an ion exchange capacity (IEC) of less than 1.65 meq / g dry film.

2. The anion exchange membrane according to claim 1, wherein n in formula (I) has a value of 1.

3. AR of equation (I) １ and AR ２ The anion exchange membrane according to claim 1 or 2, wherein both contain a styrenel group.

4. The anion exchange membrane according to claim 1 or 2, wherein the curable composition further comprises, as monomer (b), a group having a cationic charge and one or only one curable ethylenically unsaturated group.

5. The anion exchange membrane according to claim 1 or 2, wherein the curable ethylenically unsaturated group is a vinyl group.

6. The anion exchange membrane according to claim 1 or 2, wherein the mole fraction of component (a) relative to all curable components of the curable composition is at least 0.

90.

7. The anion exchange membrane according to claim 1 or 2, wherein the curable composition comprises 50 to 90 wt% of component (a), 0 to 10 wt% of component (b) a monomer containing a cationic group and one or only one curable ethylenically unsaturated group, 0 to 10 wt% of component (c) a radical initiator, 0 to 5 wt% of component (d) a monomer not containing a cationic group, and 10 to 40 wt% of component (e) a solvent.

8. The anion exchange membrane according to claim 1 or 2, further comprising a porous support.

9. A process for preparing an anion exchange film, comprising the step of curing a curable composition according to claim 1 or 2.

10. (i) A step of providing the curable composition according to claim 1; (ii) a step of applying the curable composition onto a porous support to impregnate the porous support with at least a portion of the curable composition; and (iii) A step of curing the curable composition. The process according to claim 9, including the process described in claim 9.

11. An electrodialysis device, a bipolar electrodialysis device, an electrolytic cell, a redox flow battery, an acid-base flow battery, or a fuel cell comprising one or more anion exchange membranes according to claim 1 or 2.

12. Use of an anion exchange membrane according to claim 1 or 2 for processing polar liquids, for producing acids and bases, or for generating or storing electricity.

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