Method for manufacturing cation exchange membrane

Details Method for manufacturing cation exchange membrane Method for manufacturing cation exchange membrane

1985-10-25

1987-09-15

Kulkosky, Peter F.

Chemistry: electrical and wave energy

Processes and products

204128, 204252, 204296, 521 27, 521 28, C25B 114, C25B 100, C25B 1300, C08D 520

Patent

active

046937960

ABSTRACT:
A cation exchange membrane manufacturing method in which a film of a blend which consists of a perfluoro carbon polymer having a group transformable into a sulfonic acid group and a perfluoro carbon polymer having a group transformable into a carboxylic acid group or a film of a copolymer which consists of a perfluoro carbon monomer having a group transformable into a sulfonic acid group and a perfluoro carbon monomer having a group transformable into a carboxylic acid group and another film of a perfluoro carbon polymer having a group transformable into a carboxylic acid group are joined together. Following that, the group transformable into a carboxylic acid group and the group transformable into a sulfonic acid group are transformed respectively into the carboxylic acid group and the sulfonic acid group.

REFERENCES:
patent: 4126589 (1978-11-01), Hamada et al.
patent: 4147599 (1979-04-01), O'Leary et al.
patent: 4151053 (1979-04-01), Seko et al.
patent: 4165248 (1979-08-01), Darlington et al.
patent: 4176215 (1979-11-01), Molnor
patent: 4224121 (1980-09-01), Dempsey et al.

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