C - Chemistry – Metallurgy – 25 – B
Patent
C - Chemistry, Metallurgy
25
B
204/64.2
C25B 1/46 (2006.01) C25B 15/00 (2006.01)
Patent
CA 1282029
ABSTRACT In the electrolysis of sodium chloride by means of a perfluoro cation exchange membrane for the production of sodium hydroxide having a concentration of from 32 to 40% by weight, a method for restoring the current efficiency, which comprises suspending the electrolysis when the current efficiency of the perfluoro cation exchange membrane has dropped to a predetermined level, and maintaining the sodium hydroxide concentration at a level of not higher than 30% by weight.
499179
Suhara Manabu
Suzuki Kohji
Takeshita Isamu
Asahi Glass
Marks & Clerk
Suhara Manabu
Suzuki Kohji
Takeshita Isamu
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