Title:
METHOD FOR PRODUCING HIGH PURITY ALKALI METAL HYDROXIDE
Document Type and Number:
Japanese Patent JP2008031014
Kind Code:
A
Abstract:
To provide a method for producing a high purity alkali metal hydroxide in which an alkaline earth metal contained in an alkali hydroxide is removed for purification in the state where the alkali hydroxide is in high concentration.
It was studied to remove an alkaline earth metal in an alkali hydroxide circulated in the market in the state where the alkali hydroxide is in a high concentration range. As a result, it was found that the alkaline earth metal in the alkali hydroxide can be removed with a chelate resin having an aminophosphate group.
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Inventors:
ISHIDA IKUO
OSAKABE TSUGIKATSU
ZEIDA MAYA
OSAKABE TSUGIKATSU
ZEIDA MAYA
Application Number:
JP2006207893A
Publication Date:
February 14, 2008
Filing Date:
July 31, 2006
Export Citation:
Assignee:
TOAGOSEI CO LTD
TSURUMI SODA KK
TSURUMI SODA KK
International Classes:
C01D1/32; B01J45/00; B01J49/00; C02F1/42
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