PURIFICATION METHOD FOR TETRAALKYL AMMONIUM (BI) CARBONATE AQ. SOLN AND PRODUCTION OF TETRAALKYL AMMONIUM HYDROXIDE AQUEOUS SOLUTION

摘要

PURPOSE: To obtain the high purity aq. soln. of tetraalkyl ammonium hydroxide from which impurities such as halogens or metals are highly removed. ;CONSTITUTION: In the method to obtain the aq. soln. of tetraalkyl ammonium hydroxide from a cathode by feeding the aq. soln of tetraalkyl ammonium (bi)carbonate to an anode room and subjecting to electrolysis using the electrolytic cell separated by at least one cation exchanger film, the aq. soln. of tetraalkyl ammonium (bi)carbonate which is treated in contact with the chelating resin having an amiomethylene phosphonic acid group or the chelating resin having an imino diacetic acid group is subjected to electrolysis, moreover, the aq. soln. of tetraalkyl ammonium hydroxide is subjected to circuit treatment with a cation exchange resin.;COPYRIGHT: (C)1994,JPO&Japio