| abstract |
The invention relates to a process for the preparation of monodisperse, amido-methylated, vinylaromatic bead polymers, ion exchangers which are prepared from these monodisperse, amidomethylated vinylaromatic bead polymers by alkaline hydrolysis, the use of the monodisperse, amidomethylated vinylaromatic bead polymers for the preparation of ion exchangers and chelating resins, and the Use of these ion exchangers for the removal of heavy metals and precious metals from aqueous solutions or gases. |