METHOD OF PRODUCING THE POLYHALOID ANION-EXCHANGE RESIN Russian patent published in 1997 - IPC

FIELD: technology of resin making. SUBSTANCE: polyhaloid anion-exchange resin is produced from high-base quaternary-ammonium anionite by its treatment with 2-5 M sodium chloride solution in 0.1-0.3 M hydrochloric acid solution, washing off and drying anionite up to residual moisture 5-15% followed by its iodination with solution of I₂ in KJ at stirring. Mole ratio anionite : iodine : potassium iodide = (1.0-0.8):(1.2-0.7):1.0. After iodination anionite is thermostabilized in the same solution at 45-55 C. Resin is used for water disinfection. EFFECT: decreased time of producing, decreased iodine and potassium iodide consumption. 2 cl, 2 tbl