Polymer, ion-exchange membrane, and structure-enhanced membrane employing the same

Patent metadata

Field	Value
Publication number	US-2021024672-A1
Application number	US-201916690642-A
Country	US
Kind code	A1
Filing date	Nov 21, 2019
Priority date	Jul 22, 2019
Publication date	Jan 28, 2021
Grant date	—

Abstract

The present disclosure provides a polymer, including a first repeating unit represented by formula (I), a second repeating unit represented by formula (II), and a third repeating unit represented by formula (III). The first repeating unit, the second repeating unit, and the third repeating unit are arranged in an alternating fashion, in a random fashion, or in discrete blocks. The molar ratio of the first repeating unit, the second repeating unit and the third repeating unit is m:n:o, and m:(n+o) is from 60:40 to 85:15. The definitions of a, R 1 , R 2 , A − , and R + are as defined in the specification.

First claim

What is claimed is:

1 . A polymer, comprising a first repeating unit represented by formula (I), a second repeating unit represented by formula (II), and a third repeating unit represented by formula (III):

wherein the first repeating unit, the second repeating unit, and the third repeating unit were arranged in an alternating fashion, in a random fashion, or in discrete blocks, the molar ratio of the first repeating unit, the second repeating unit, and the third repeating unit is m:n:o, and m:(n+o) is from 60:40 to 85:15; and
wherein a is an integer from 0 to 5;
R 1 is a C 1 -C 8 alkyl group, a C 3 -C 8 cycloalkyl group, a C 1 -C 8 alkoxyl group, or a C 1 -C 8 alkoxyalkyl group;
R 2 is a C 6 -C 16 arylene group, a C 1 -C 8 alkylene group, a C 3 -C 8 cycloalkylene group, or a C 1 -C 8 alkoxyalkylene group;
A − is —SO 3 − , —NO 3 − , or —COO − ; and
R + is H + , Li + , Na + , K + , or NH 4 + .

2 . The polymer as claimed in claim 1 , wherein m:n is from 99:1 to 70:30, and n:o is from 60:40 to 30:70.

3 . The polymer as claimed in claim 1 , wherein a weight average molecular weight of the polymer is from 5000 to 400000.

4 . The polymer as claimed in claim 1 , wherein a weight average molecular weight of the polymer is from 50000 to 100000.

5 . A crosslinked polymer having a structure represented by formula (VI) or a structure represented by formula (VII):

wherein units in formula (VI) and units in formula (VII) were arranged in an alternating fashion, in a random fashion, or in discrete blocks;
a is an integer from 0 to 5;
R 1 is a C 1 -C 8 alkyl group, a C 3 -C 8 cycloalkyl group, a C 1 -C 8 alkoxyl group, or a C 1 -C 8 alkoxyalkyl group;
R 2 is a C 6 -C 16 arylene group, a C 1 -C 8 alkylene group, a C 3 -C 8 cycloalkylene group, or a C 1 -C 8 alkoxyalkylene group;
A − is —SO 3 − , —NO 3 − , or —COO − ;
R + is H + , Li + , Na + , K + , or NH 4 + ;
m:n is from 99:1 to 70:30;
n:o′ is from 2:1 to 3:7;
n:p is from 6:4 to 4:6;
m:n′ is from 99:1 to 70:30;
n′:o″ is from 2:1 to 3:7;
n′:p′ is from 6:4 to 4:6;
m:n″ is from 99:1 to 70:30;
n″:p″ is from 6:4 to 4:6;
R 3 is

R 4 is

and
R 5 is independently H or a C 1 -C 4 alkyl group.

6 . A crosslinked polymer formed from a compound having a styrene-maleic anhydride structure, a compound having a

structure, and a compound having multiple amino terminal groups,
wherein R 2 is a C 6 -C 16 arylene group, a C 1 -C 8 alkylene group, a C 3 -C 8 cycloalkylene group, or a C 1 -C 8 alkoxyalkylene group;
A − is —SO 3 − , —NO 3 − , or —COO − ; and
R + is H + , Li + , Na + , K + , or NH 4 + .
an equivalent quantity (N 1 ) of the compound having a

structure is less than an equivalent quantity (N 2 ) of the compound having a styrene-maleic anhydride structure; and
an equivalent quantity (N 3 ) of the compound having multiple amino terminal groups is greater than or equal to (N 2 -N 1 )/number of amino groups in the compound having multiple amino terminal groups.

7 . The crosslinked polymer as claimed in claim 6 , wherein the compound having a styrene-maleic anhydride structure has a structure:

and
the compound having multiple amino terminal groups is R 3 (NH 2 ) 2 or R 4 (NH 2 ) 3 ;
wherein m:x is from 60:40 to 85:15;
a is an integer from 0 to 5;
R 1 is a C 1 -C 8 alkyl group, a C 3 -C 8 cycloalkyl group, a C 1 -C 8 alkoxyl group, or a C 1 -C 8 alkoxyalkyl group;
R 3 is

and
R 4 is

8 . The crosslinked polymer as claimed in claim 6 , wherein an equivalent ratio of the compound having a styrene-maleic anhydride structure to the compound having a

structure is from 1:0.16 to 1:0.24.

9 . The crosslinked polymer as claimed in claim 6 , wherein an equivalent ratio of the compound having a

structure to the compound having multiple amino terminal groups is from 3:7 to 2:1.

Assignees

• Ind Tech Res Inst

Inventors

• Lee Hsuan-Wei
• Tsai Cheng-Hsiu
• WANG Chiu-Tung
• Tsai Li-Duan
• Chen Tzu-Ying

Classifications

• B01J47/12

  characterised by the use of ion-exchange material in the form of ribbons, filaments, fibres or sheets, e.g. membranes (electrodialysis or electro-osmosis B01D61/42) · CPC title

• B01J39/05

  in the strongly acidic form · CPC title

• B01J39/20

  obtained by reactions only involving unsaturated carbon-to-carbon bonds · CPC title

• B01J39/07

  in the weakly acidic form · CPC title

• C08K2201/006

  Additives being defined by their surface area · CPC title