SULFONATED BEAD POLYMERS PREPARED FROM STYRENE, VINYLPYRIDINES, AND CROSSLINKERS.

摘要

Preparation of a sulfonated bead polymer comprises polymerizing a suspension of seed polymer and a monomer mixture of styrene, crosslinker and optionally phenol derivative in an aqueous phase and sulfonating. Preparation of sulfonated bead polymer comprises polymerizing a suspension of seed polymer and a monomer mixture comprising 67-99.45 wt.% styrene, 0.05-20 wt.% crosslinker and optionally 0.5-8 wt.% vinyl pyridine in an aqueous phase using 0.1-1.1 pts. wt. initiator and functionalizing by sulfonation. Independent claims are included for copolymers obtained by suspension polymerization as above without functionalization and the obtained bead polymers.