Compositions and polymer films

Patent metadata

Field	Value
Publication number	US-12534583-B2
Application number	US-202118041879-A
Country	US
Kind code	B2
Filing date	Sep 27, 2021
Priority date	Sep 30, 2020
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

A polymer film obtainable by polymerising a composition comprising: (a) a compound Formula (I); wherein: R is C 1-4 -alkyl, NH 2 or C 6-12 -aryl; and M + is a cation; (b) a monomer comprising at least two polymerisable groups; and (c) a solvent. Also claimed are compositions and processes for making the polymer films.

First claim

The invention claimed is:

1 . A polymer film obtained by polymerising a composition comprising:
(a) a compound Formula (I);

wherein:
R is C 1-4 -alkyl, NH 2 or C 6-12 -aryl; and
M + is a cation;
(b) a monomer comprising at least two polymerisable groups; and
(c) a solvent.

2 . The polymer film according to claim 1 wherein the composition comprises:
(a) 5 to 60 wt % of component (a);
(b) 10 to 70 wt % of component (b);
(c) 10 to 50 wt % of component (c).

3 . The polymer film according to claim 1 wherein R is methyl, phenyl, benzyl or NH 2 .

4 . The polymer film according to claim 1 wherein the polymerisable groups are each independently selected from (meth) acrylic groups and vinyl groups.

5 . The polymer film according to claim 1 wherein component (b) further comprises an anionic group.

6 . The polymer film according to claim 5 wherein the anionic group comprises a sulpho group or a bissulphonylimide group.

7 . The polymer film according to claim 1 wherein component (a) is free from fluorine atoms.

8 . The polymer film according to claim 1 wherein the composition comprises (d) a radical initiator.

9 . The polymer film according to claim 1 which is a cation exchange membrane.

10 . A bipolar membrane comprising the polymer film according to claim 1 .

11 . The polymer film according to claim 1 which further comprises a porous support.

12 . The polymer film according to claim 8 wherein component (d) is present in an amount of
0.001 to 10 wt % of component (d).

13 . A method comprising placing the polymer film of claim 9 within a compartment, applying a current density over the polymer film and pumping a solution through the compartment.

14 . A method comprising placing the bipolar membrane according to claim 10 within a compartment, applying a current density over the bipolar membrane and pumping a solution through the compartment.

15 . The bipolar membrane according to claim 10 further comprising an anion exchange layer (AEL) obtained by curing a composition comprising a compound of Formula (IV):

wherein:
L 1 is an alkylene group or an alkenylene group;
R a , R b , R c and R d are each independently an alkyl group or an aryl group, or
R a and R b , and/or Re and R d , together with the atoms to which they are attached, form a ring;
n1 and n2 each independently represent an integer having a value of 1 to 10; and
X 1 − and X 2 − each independently represent an anion.

16 . The polymer film according to claim 1 wherein:
(i) component (a) is free from fluorine atoms;
(ii) in component (a) R is methyl, phenyl, benzyl or NH 2 ;
(iii) in component (b) the anionic group comprises a sulpho group or a bissulphonylimide group; and
(iv) in component (b) the polymerisable groups are each independently selected from (meth) acrylic groups and vinyl groups.

17 . The bipolar membrane according to claim 10 wherein:
(i) component (a) is free from fluorine atoms;
(ii) in component (a) R is methyl, phenyl, benzyl or NH 2 ;
(iii) in component (b) the anionic group comprises a sulpho group or a bissulphonylimide group; and
(iv) in component (b) the polymerisable groups are each independently selected from (meth) acrylic groups and vinyl groups.

Assignees

• Fujifilm Mfg Europe Bv
• Fujifilm Corp

Inventors

• Van Rijen Adrianus Jacobus
• Narita Takeshi
• Martinez Elisa Huerta
• Hessing Jacko

Classifications

• C08J2325/18

  Homopolymers or copolymers of aromatic monomers containing elements other than carbon and hydrogen · CPC title

• B01D2325/42

  Ion-exchange membranes · CPC title

• C08F212/34

  Monomers containing two or more unsaturated aliphatic radicals · CPC title

• C08F212/30

  Sulfur · CPC title

• B01D71/60

  Polyamines · CPC title