Method for producing fluorosulfonyl group-containing fluorinated polymer, method for producing salt-type sulfonic acid group- containing fluorinated polymer and method for producing acid-type sulfonic acid group-containing fluorinated polymer
AssigneeAGC Inc.
InventorsTakeshi Hirai, Susumu Saito
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Abstract
To provide a method for producing a polymer, whereby it is possible to obtain a sulfonic acid group-containing polymer having a high TQ value and a high ion exchange capacity. A method for producing a fluorosulfonyl group-containing fluorinated polymer, which comprises polymerizing a monomer represented by the following formula m1 and tetrafluoroethylene, at a temperature of at least 110° C. and at most 250° C.: in the above formula, RF1 and RF2 are each a C1-3 perfluoroalkylene group.
Claims7
A method for producing a fluorosulfonyl group-containing fluorinated polymer, comprising polymerizing a monomer represented by formula m1 and tetrafluoroethylene at a temperature of at least 110° C. and at most 250° C.:
- wherein RF1 and RF2 are each independently a C1-3 perfluoroalkylene group;
- further comprising producing at least 1.0 g of the fluorosulfonyl group-containing fluorinated polymer per 100 g of a total amount of the monomer represented by formula m1 charged before and during the polymerization and per hour of polymerization time.
Dependencies are inferred from the claim text.