| 摘要 |
<p>It relates to a monomer, of formulae I-III, to a polymer obtained from the monomer and to a process for producing the said polymer. The monomer consists of a polyether containing at least 3 ether units and pyrrole or thiophene units linked to the ends of the chains of this polyether via, for each of these heterocyclic compounds, either their carbon atoms in the 3,3'-positions of their heterocycles or, as regards more particularly the pyrrole groups, via their respective nitrogen atoms, the 2- and 2'-positions of these heterocycles being, however, free of any substitution or, at the very most, substituted by groups which can be easily removed (protecting groups, for example). Application to the purification and recovery of metal ions, such as radioactive silver. <IMAGE></p> |
