Patent ID: 8399528
Filing Date: 2013-03-19
Classification: B01J,C08F

Abstract:
1. A method for producing monodisperse ion exchangers having chelating functional groups represented by the structural formula (I) where comprising the steps of: a) forming monodisperse crosslinked polymer beads via reacting monomer droplets of at least one monovinylaromatic compound, at least one polyvinylaromatic compound, at least one porogen and at least one initiator or an initiator combination, wherein a jetting process and/or the seed-feed process is employed, b) phthalimidomethylating the monodisperse crosslinked polymer beads with phthalimide derivatives present in inert solvent and comprising an SO c) converting the phthalimidomethylated polymer beads to aminomethylated polymer beads, and d) reacting the aminomethylated polymer beads to introduce chelating groups, thereby forming said monodisperse ion exchangers having chelating functional groups represented by the structural formula (I).