Iminodiacetic acid derivative

Abstract

Abstract NEW MATERIAL:A compound of the formula (R1 is 2-4C alkylene; R2 and R3 are H, alkyl, aryl, alkali metal or alkaline earth metal; n is an integer 1-30). EXAMPLE:N-(Trioxyethylene)-N,N-dicarboxymethylamine. USE:A raw material for synthesizing chelate resins and a sequestering agent. PROCESS:Iminodiacetic acid or a salt or ester thereof is reacted with an alkylene oxide under pressurized closed conditions of 10-100atm to give the aimed compound of the formula. Preferably, the reaction is carried out by using the alkylene oxide at (1:n)-[1:(n+0.2)] molar ratio between the alkylene oxide and the iminodiacetic acid, etc. The chelate resin obtained by using the compound of the formula is excellent in its high selective adsorptivity and high adsorption rate for various metallic ions and high exchange capacity.

Inventors

• 👤 Taro Tokusawa
• 👤 徳沢　太郎
• 👤 Koichi Teranishi
• 👤 寺西　広一

Bibliographic Details