Patent ID: 7265159

Claim:
Process for producing monodisperse strongly basic anion exchangers of the poly(meth)acrylamide type containing quatemary amine groups, wherein a) in a first stage a monomer mixture of one or more different acrylic compounds and one or more different crosslinkers or one or more different monovinyl aromatic compounds and one or more different crosslinkers are injected or sprayed into a liquid essentially immiscible with the monomer mixture to form droplets, the droplets are then encapsulated and polymerized, and the encapsulated and polymerized droplets are then reacted with a feed of acrylic compounds and crosslinkers in a seed-feed process and the resulting product is polymerized to form monodisperse crosslinked acrylic polymer beads or monodisperse crosslinked acryl-containing polymer beads, and b) the product obtained by step a) is then introduced into a liquid amine of the diamine type to form a suspension, the suspension is heated to temperatures above 100° C., optionally distilled, stirred for several hours, and the resulting aminated bead polymer is washed amine-free, and is reacted with alkylhalides or aryhalides.