| 摘要 |
PURPOSE:To obtain a uranium collecting polymer agent having high selective adsorptivity for uranium dissolved in water, by reacting a specified hydrazone compd. with a maleic anhydride-vinyl monomer copolymer. CONSTITUTION:A hydrazone derivative represented by formulaIin which R is H or alkyl is reacted with a copolymer of maleic anhydride and a vinyl monomer, such as 2-methylpropylene to give a polymer having acylhydrazone structure, and carboxylic groups on the side chains, serviceable as an uranium collecting agent. This uranium collecting agent selectively adsorbs a very small amt. of uranium with high efficiency, even in the presence of many kinds of ions in high concn. It is suitable for collection of uranium in the sea and recovery of uranium from the effluent of a uranium refinery. |
