Process for making ion exchange membranes and films

Details Process for making ion exchange membranes and films Process for making ion exchange membranes and films

1992-08-28

1993-12-28

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

264216, 26433114, B29C 6720

Patent

active

052736946

ABSTRACT:
Ion exchange membranes or films are made from a solution of perfluorinated cycloalkanes, perfluorinated aromatic compounds and perfluorotrialkyl amines having a critical temperature greater than 150.degree. C. and certain carboxylic fluorinated polymers having an equivalent weight greater than 900. A process for repairing ion exchange membranes and films by spray coating the surface of the membrane or film with the solution is also disclosed. The ion exchange membranes and films are useful in chloralkali cells or fuel cells.

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