Claims
- 1. A process for modifying a fluorinated cation exchange membrane comprising irradiating said membrane, in an environment substantially free of a monomer which would graft polymerize with components of said membrane, with a non-spark-producing ionizing radiation with a dose sufficient to decrease the voltage in the use of the membrane for the electrolysis of an anolyte, in which the anolyte is either a sodium chloride or potassium chloride solution.
- 2. The process of claim 1 wherein electron beam irradiation is used and the anolyte is sodium chloride.
- 3. The process of claim 2 wherein the does if 0.5-10 megarads.
- 4. The process of claim 3 wherein the dose is achieved in a single exposure to the radiation.
- 5. A modified fluorinated cation exchange membrane made by the process of claim 1.
- 6. The membrane of claim 5 wherein the membrane comprises at least two layers in which at least one layer which is to be in contact with the anolyte during electrolysis has pendant sulfonyl groups.
- 7. The process of claim 1 wherein the membrane is irradiated in its salt form.
- 8. The process of claim 1 wherein the membrane is irradiated in its unhydrolyzed or partially hydrolyzed form.
Parent Case Info
This application is a continuation-in-part of Ser. No. 07/663,003, filed Mar. 1, 1991 now abandoned.
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57065B |
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EPX |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
663003 |
Mar 1991 |
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