C - Chemistry – Metallurgy – 25 – B
Patent
C - Chemistry, Metallurgy
25
B
204/202
C25B 13/08 (2006.01) C08J 5/22 (2006.01) C25B 1/34 (2006.01)
Patent
CA 1223842
ABSTRACT OF THE DISCLOSURE An ion exchange membrane which comprises a layer of fluorinated polymer which has carboxylic functional groups, a layer of fluorinated polymer which has sulfonic functional groups as a surface layer, and a web of support material therein, and which has channels extending from window areas of the membrane to blind areas of the membrane occluded by members of the support material, is described. Precursor membrane which contains both reinforcement members and sacrificial members, and from which the ion exchange membrane is made, is also described. The ion exchange membrane can be used to separate the compartments of a chloralkali cell, and such a cell operates at low voltage, high current efficiency, and low power consumption.
394131
Bissot Thomas C.
Grot Walther G.
Resnick Paul R.
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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