Polymer useful for an ion exchange membrane

Patent metadata

Field	Value
Publication number	US-9593215-B2
Application number	US-201514757920-A
Country	US
Kind code	B2
Filing date	Dec 23, 2015
Priority date	Dec 23, 2014
Publication date	Mar 14, 2017
Grant date	Mar 14, 2017

Abstract

The present invention provides for a polymer formed by reacting a first reactant polymer, or a mixture of first reactant polymers comprising different chemical structures, comprising a substituent comprising two or more nitrogen atoms (or a functional group/sidechain comprising a two or more nitrogen atoms) with a second reactant polymer, or a mixture of second reactant polymers comprising different chemical structures, comprising a halogen substituent (or a functional group/sidechain comprising a halogen).

First claim

What is claimed is:

1. A composition comprising a polymer having chemical structure:

wherein α is a substituent comprising two or more nitrogen atoms; R1, R2, R3, and R4 are each independently a phenylene oxide, sulfone, imide, ketone, or epichlorohydrin; x and p each is independently an integer having a value ranging from 1 to 1,000; y and q each is independently an integer having a value ranging from 0 to 1,000, or 1 to 1,000; and, m and n each is independently an integer having a value ranging from 1 to 1,000,000.

2. The composition of claim 1 , wherein R1 and R2 are identical.

3. The composition of claim 1 , wherein R3 and R4 are identical.

4. The composition of claim 3 , wherein R1, R2, R3, and R4 are identical.

5. The composition of claim 1 , wherein y and/or q is 0.

6. The composition of claim 1 , wherein α is a substituent comprising a heterocycle structure comprising two or more nitrogen atoms.

7. The composition of claim 6 , wherein the substituent comprises an imidazole.

8. The composition of claim 1 , wherein the polymer has the chemical structure:

wherein X − corresponds to any anion.

9. The composition of claim 8 , wherein X − is a hydroxide anion.

10. The composition of claim 1 , wherein the polymer has the chemical structure:

wherein q, r, s, x, y, and z each is independently a mole fraction having a value ranging from 0.001 to 0.999; and m and n each is independently an integer having a value ranging from 1 to 1,000,000.

11. The composition of claim 1 , wherein the composition comprises a blend of two or more polymers of different chemical structures, wherein each polymer has the chemical structure:

wherein t, u, v, x, y, and z each is independently a mole fraction having a value ranging from 0.001 to 0.999, and m and n each is independently an integer having a value ranging from 1 to 1,000,000.

12. The composition of claim 1 , wherein the polymer has the chemical structure:

13. A method for synthesizing a membrane comprising: (a) reacting a first reactant polymer and a second reactant polymer, optionally (b) converting a precursor polymer into the second reactant polymer, optionally (c) converting the second reactant polymer into the first reactant polymer, wherein steps (b) and (c) occur prior to the reacting step; wherein the first reactant polymer has a chemical structure:

wherein α is a substituent comprising two or more nitrogen atoms; R1 and R2 are each independently a phenylene oxide, sulfone, imide, ketone, or epichlorohydrin; x is an integer having a value ranging from 1 to 1,000; y is an integer having a value ranging from 0 to 1,000, or 1 to 1,000; and, m is independently an integer having a value ranging from 1 to 1,000,000, and the second reactant polymer has a chemical structure:

wherein R3 and R4 are each independently a phenylene oxide, sulfone, imide, ketone, or epichlorohydrin; β is a halogen substituent; p is an integer having a value ranging from 1 to 1,000; q is an integer having a value ranging from 0 to 1,000, or 1 to 1,000; and, n is independently an integer having a value ranging from 1 to 1,000,000.

14. The method of claim 13 , wherein the first reactant polymer has the chemical structure:

15. The method of claim 13 , wherein R3 and R4 are identical.

16. The method of claim 13 , wherein q is 0.

17. The method of claim 13 , wherein β is —(CH 2 ) a -Hal, wherein a is an integer from one to ten, and Hal is a halogen.

18. The method of claim 17 , wherein a is an integer is one, two, three, or four.

Assignees

• Univ California

Inventors

• Liang Siwei
• Lynd Nathaniel A

Classifications

• B01J41/125

  Operations & Transport · mapped topic

• C25B1/10

  Chemistry & Metallurgy · mapped topic

• C25B1/003

  Chemistry & Metallurgy · mapped topic

• C08G65/485

  Polyphenylene oxides · CPC title

• C08J2371/12

  Polyphenylene oxides · CPC title