Cation exchange element having inclusive action and preparation thereof

Abstract

Abstract PURPOSE:To obtain a cation exchange element having inclusive action, by introducing a carboxymethyl group into polycryclodextrine resin. CONSTITUTION:In order to introduce a carboxymethyl group into polycyclodextrine, monohalogenoacetate is added to polycyclodextrine dispersed in an alkaline aqueous solution and the resulting mixture is held at 40-60 deg.C under stirring to carry out reaction. The obtained product is washed by distilled water until the pH of washing water becomes neutral and dehydrated by acetone to be dried to be converted to an alkali metal salt or an alkaline earth metal salt. The obtained one is wahed by dilute hydrochloric acid to substitute a cation with a hydrogen ion and the treated one is used as a cation exchange element. By this method, the cation exchange element having inclusive action is obtained. The obtained resin can be used as an ion exchange element, a separating agent and an adsorbent.

Inventors

• 👤 Kazuaki Harada
• 👤 原田　一明
• 👤 Satoshi Morimoto
• 👤 森本　敏

Bibliographic Details