Phosphazene bond-containing polymer

Patent metadata

Field	Value
Publication number	US-2024166824-A1
Application number	US-202218546871-A
Country	US
Kind code	A1
Filing date	Mar 1, 2022
Priority date	Mar 2, 2021
Publication date	May 23, 2024
Grant date	—

Abstract

The present invention aims to provide a polymer having excellent alkali resistance and anion conductivity, a method of producing the polymer, an electrolyte material containing the polymer, and an anion exchange membrane containing the polymer. The present invention relates to a phosphazene bond-containing polymer containing a phosphorus atom constituting a phosphazene bond, the phosphorus atom including a phosphorus atom to which a nitrogen-containing group is bonded, and a nitrogen atom constituting the phosphazene bond, the nitrogen atom including a nitrogen atom to which a hydrocarbon group is bonded.

First claim

1 . A phosphazene bond-containing polymer, comprising:
a phosphorus atom constituting a phosphazene bond, the phosphorus atom including a phosphorus atom to which a nitrogen-containing group is bonded; and a nitrogen atom constituting the phosphazene bond, the nitrogen atom including a nitrogen atom to which a hydrocarbon group is bonded.

2 . The phosphazene bond-containing polymer according to claim 1 , comprising:
(i) a structural unit (A-1) represented by the following formula (A-1):

wherein Y 1 is a hydrocarbon group; X 1 and X 2 are each independently at least one selected from the group consisting of a hydroxy group, halogen atoms, a hydrocarbon group, a OR 11 group, a C(═O)R 12 group, a SR 13 group, and a nitrogen-containing group, with at least one of X 1 or X 2 being a nitrogen-containing group; the hydrocarbon group, the OR 11 group, the C(═O)R 12 group, the SR 13 group, and the nitrogen-containing group are each optionally a monovalent group, or optionally a divalent group bonded to the hydrocarbon group for Y 1 , bonded to a phosphazene structure different from the phosphazene structure of the structural unit (A-1), or bonded to a structure that is not a phosphazene structure, in the phosphazene bond-containing polymer; X 1 and X 2 are optionally bonded to each other; R 11 , R 12 , and R 13 are each independently a hydrocarbon group; and the phosphorus atom P or nitrogen atom N in the formula is optionally positively charged, or
(ii) a structural unit (A-2) represented by the following formula (A-2) and a structural unit (A-3) represented by the following formula (A-3):

wherein Y 2 is a hydrocarbon group; X 3 and X 4 are each independently selected from the group consisting of a hydroxy group, halogen atoms, a hydrocarbon group, a OR 21 group, a C(═O)R 22 group, and a SR 23 group; the hydrocarbon group, the OR 21 group, the C(═O)R 22 group, and the SR 23 group are each optionally a monovalent group, or optionally a divalent group bonded to the hydrocarbon group for Y 2 , bonded to a phosphazene structure different from the phosphazene structure of the structural unit (A-2), or bonded to a structure that is not a phosphazene structure, in the phosphazene bond-containing polymer; X 3 and X 4 are optionally bonded to each other; R 21 , R 22 , and R 23 are each independently a hydrocarbon group; and the phosphorus atom P or the nitrogen atom N in the formula is optionally positively charged,

wherein X 5 and X 6 are each independently at least one selected from the group consisting of a hydroxy group, halogen atoms, a hydrocarbon group, a OR 31 group, a C(═O)R 32 group, a SR 33 group, and a nitrogen-containing group, with at least one of X 5 or X 6 being a nitrogen-containing group; the hydrocarbon group, the OR 31 group, the C(═O)R 32 group, the SR 33 group, and the nitrogen-containing group are each optionally a monovalent group, or optionally a divalent group bonded to a phosphazene structure different from the phosphazene structure of the structural unit (A-3), or bonded to a structure that is not a phosphazene structure, in the phosphazene bond-containing polymer; X 5 and X 6 are optionally bonded to each other; and R 31 , R 32 , and R 33 are each independently a hydrocarbon group.

3 . The phosphazene bond-containing polymer according to claim 1 ,
wherein the phosphazene bond-containing polymer is a cationic polymer.

4 . The phosphazene bond-containing polymer according to claim 3 , further comprising a counter anion.

5 . The phosphazene bond-containing polymer according to claim 1 ,
wherein the nitrogen-containing group is represented by the following formula (B-1):
NR b1 n   (B-1)

wherein n is 1 or 2; when n is 2, R b1 s are each independently a hydrogen atom or an organic group containing an optionally substituted monovalent or multivalent hydrocarbon group; and
when n is 1, R b1 is an organic group containing an optionally substituted multivalent hydrocarbon group.

6 . The phosphazene bond-containing polymer according to claim 1 ,
wherein the phosphazene bond-containing polymer has a cyclic-phosphazene structure.

7 . An electrolyte material comprising the phosphazene bond-containing polymer according to claim 1 .

8 . An anion exchange membrane comprising the phosphazene bond-containing polymer according to claim 1 .

Assignees

• Nippon Catalytic Chem Ind

Inventors

• Miyata Yoshinori
• Imiya Hiroto

Classifications

• C08G79/025 Primary

  Polyphosphazenes · CPC title

• B01J41/13

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

• C08J5/2256

  based on macromolecular compounds obtained by reactions other than those involving carbon-to-carbon bonds, e.g. obtained by polycondensation · CPC title

• C25B13/08

  based on organic materials · CPC title

• H01M8/103

  having nitrogen, e.g. sulfonated polybenzimidazoles [S-PBI], polybenzimidazoles with phosphoric acid, sulfonated polyamides [S-PA] or sulfonated polyphosphazenes [S-PPh] · CPC title