SELECTIVE ION EXCHANGE RESINS

摘要

A polymeric ion exchange resin of the cross linked type in which the active groups may he constituted either wholly or in part by an imidazole group which is, in turn, attached directly to a crosslinked, polymerized vinyl backbone. The optional substituents on the imidazole ring include optionally substituted pyridyl, imidazoyl or amino groups which can be of substantially known type. A method of preparation of such resins includes the provision of at least the imidazole ring on the vinyl monomer before polymerization thereof. The active groups may be added or modified after polymerization with a cross linking agent.