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US 2022/0041765 A1Published application
Fluorosulfonyl group-containing compound, fluorosulfonyl group-containing monomer, and their production methods
AssigneeAGC Inc.
InventorsTakeshi HIRAI, Daisuke Jomuta, Chikaya Tamitsuji
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Abstract
A method for producing a fluorosulfonyl group-containing compound to obtain a compound represented by the following formula 5 from a compound represented by the following formula 1 as a starting material and a method for producing a fluorosulfonyl group-containing monomer in which the fluorosulfonyl group-containing compound is used: wherein R1 and R2 are a C1-3 alkylene group, and RF1 and RF2 are a C1-3 perfluoroalkylene group.
Claims6
1:
- A fluorosulfonyl group-containing polymer comprising a monomer of Formula 9a as a copolymerized unit:
- wherein RF1 and RF2 are each CF2.
2:
- The fluorosulfonyl group-containing polymer of claim 1, further comprising copolymerized units of tetrafluoroethylene.
3:
- The fluorosulfonyl group-containing polymer of claim 2, further comprising a copolymerized unit selected from the group consisting of chlorotrifluoroethylene, trifluoroethylene, vinylidene fluoride, vinyl fluoride, ethylene, propylene, perfluoro(3-butenyl vinyl ether), a perfluoro(allyl vinyl ether), a perfluoro α-olefin, a (perfluoroalkyl)ethylene, a (perfluoroalkyl)propene, a perfluoro(alkyl vinyl ether) and a perfluoromonomer having a 5-membered ring.
4:
- A sulfonic acid containing polymer obtained by hydrolysis of the fluorosulfonyl groups of the fluorosulfonyl group-containing polymer of claim 1;
- wherein an ion exchange capacity of the sulfonic acid containing polymer is from 0.5 to 2.5 meq/g dry resin.
5:
- A sulfonic acid containing polymer obtained by hydrolysis of the fluorosulfonyl groups of the fluorosulfonyl group-containing polymer of claim 2;
- wherein an ion exchange capacity of the sulfonic acid containing polymer is from 0.5 to 2.5 meq/g dry resin.
6:
- A sulfonic acid containing polymer obtained by hydrolysis of the fluorosulfonyl groups of the fluorosulfonyl group-containing polymer of claim 3;
- wherein an ion exchange capacity of the sulfonic acid containing polymer is from 0.5 to 2.5 meq/g dry resin.