POLYMERIC MATERIAL FOR WATER TREATMENT, CATION-EXCHANGE RESIN, AND ANION-EXCHANGE RESIN

摘要

A polymeric material which has such a high resistance to oxidative decomposition that it is less apt to suffer the performance decrease caused by oxidative deterioration and to cause water pollution by oxidative decomposition products during its use, and which is usable for water treatment as a coagulant, dehydrant, dispersant, film, etc.; a cation-exchange resin which has an excellent resistance to oxidative decomposition and is reduced in the elution of resin components during use; and an anion-exchange resin which has an excellent resistance to oxidative decomposition and is reduced in the elution of resin components during use. The polymeric material is characterized by having groups which have an antioxidant function and have been covalently bonded. The cation-exchange resin is characterized in that the groups having an antioxidant function have been covalently bonded through sulfonamide bonds represented by the general formula (1): -SO2NR<1>-. The anion-exchange resin is characterized in that the groups having an antioxidant function have been covalently bonded through iminoalkylene bonds represented by the general formula (2): -(CH2)nNR<2>-. In the formulae, R<1> and R<2> each represents hydrogen or methyl and n is an integer of 1 to 4.