Polymer, ion-exchange membrane, and structure-enhanced membrane employing the same
AssigneeIndustrial Technology Research Institute
InventorsHsuan-Wei Lee, Cheng-Hsiu Tsai, Chiu-Tung Wang, Li-Duan Tsai, Tzu-Ying Chen
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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, R1, R2, A−, and R+ are as defined in the specification.
Claims4
A crosslinked polymer having a structure represented by
- . . . formula (VTI);
- wherein units in formula (VII) are arranged in an alternating fashion, in a random fashion, or in discrete blocks;
- a is an integer from 0 to 5;
- R1 is a C1-C8 alkyl group, a C3-C8 cycloalkyl group, a C1-C8 alkoxyl group, or a C1-C8 alkoxyalkyl group;
- R2 is a C6-C16 arylene group, a C1-C8 alkylene group, a C3-C8 cycloalkylene group, or a C1-C8 alkoxyalkylene group;
- A− is —SO3−, —NO3−, or —COO−;
- R+ is H+, Li+, Na+, K+, or NH4+;
- 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;
- R4 is
- wherein f+h+i is 5 to 10 and g is 0 or 1;
- and
- R5 is independently H or a C1-C4 alkyl group.
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 which is R4(NH2)3,
- wherein R2 is a C6-C16 arylene group, a C1-C8 alkylene group, a C3-C8 cycloalkylene group, or a C1-C8 alkoxyalkylene group;
- A− is —SO3−, —NO3−, or —COO−;
- and
- R+ is H+, Li+, Na+, K+, or NH4+;
- R4 is
- wherein f+h+i is 5 to 10 and g is 0 or 1;
- R5 is independently H or a C1-C4 alkyl group;
- a molar equivalent quantity (N1) of the compound having a
- structure is less than a molar equivalent quantity (N2) of the maleic anhydride of the compound having a styrene-maleic anhydride structure;
- and
- a molar equivalent quantity (N3) of the compound having multiple amino terminal groups is greater than or equal to (N2−N1)/nurnber of amino groups in the compound having multiple amino terminal groups.
Dependencies are inferred from the claim text.