Title:
酸型スルホン酸基含有ポリマー、液状組成物、固体高分子電解質膜、膜電極接合体、固体高分子形燃料電池及び水電解用イオン交換膜
Document Type and Number:
Japanese Patent JP7355037
Kind Code:
B2
Abstract:
To provide an acid-type sulfonic acid group-containing polymer which is excellent in hydrogen gas barrier properties and hot water resistance and which generates less oligomer during production; a liquid composition and a polymer electrolyte membrane comprising this acid-type sulfonic acid group-containing polymer; and a membrane electrode assembly and a polymer electrolyte fuel cell provided with the polymer electrolyte membrane.This acid-type sulfonic acid group-containing polymer is a polymer which has perfluoromonomer units, no monomer units having a halogen atom other than a fluorine atom, and acid-type sulfonic acid groups, and of which the hydrogen gas permeability coefficient under the conditions of a temperature of 80°C and a relative humidity of 10%, is at most 2.5×10-9 cm3·cm/(s·cm2·cmHg), and the mass reduction rate when being immersed in hot water at 120°C for 24 hours is at most 15 mass%, wherein the TQ value of a polymer having fluorosulfonyl groups which is a precursor of the polymer having acid-type sulfonic acid groups, is at least 220°C.
Inventors:
Taketsugu Hirai
Mitsugu Saito
Hiroyuki Watanabe
Shinya Mintsuji
Kamimuta Daisuke
Mitsugu Saito
Hiroyuki Watanabe
Shinya Mintsuji
Kamimuta Daisuke
Application Number:
JP2020560076A
Publication Date:
October 03, 2023
Filing Date:
December 06, 2019
Export Citation:
Assignee:
AGC Inc.
International Classes:
C08F8/12; C08F214/26; C25B13/04; C25B13/08; H01B1/06; H01M8/10; H01M8/1023; H01M8/1039; H01M8/1067
Foreign References:
| WO2018012374A1 | ||||
| WO2005029624A1 | ||||
| WO2018061838A1 | ||||
| WO2017221840A1 | ||||
| WO2018207325A1 |
Attorney, Agent or Firm:
Patent Attorney Shiga International Patent Office