초록 ▼

A method is provided for strong base anion exchange resins containing high concentrations of pentaiodide (I5-). The resins are prepared from highly concentrated solutions of I5-and I3-ions. The exchanged ions, such as chloried (Cl-), are washed out of the resin after completion of the exchange react

A method is provided for strong base anion exchange resins containing high concentrations of pentaiodide (I5-). The resins are prepared from highly concentrated solutions of I5-and I3-ions. The exchanged ions, such as chloried (Cl-), are washed out of the resin after completion of the exchange reaction with the polyiodide ion mixture. The resulting product is a stable resin of predetermined I5-content, which is highly effective as a disinfectant for water, acting against water-borne bacteria, virus, and Giardia.

대표청구항 ▼

The method of directly preparing a polyiodide quaternary ammonium anion exchange resin disinfectant capable of killing Giardia, said resin disinfectant containing I5-exchange sites and I3-exchange sites and said resin disinfectant being prepared from an aqueous solution of an iodide (I-) salt and el

The method of directly preparing a polyiodide quaternary ammonium anion exchange resin disinfectant capable of killing Giardia, said resin disinfectant containing I5-exchange sites and I3-exchange sites and said resin disinfectant being prepared from an aqueous solution of an iodide (I-) salt and elemental iodine (I2), comprising: (a) preparing salt aqueous solution by dissolving the iodide salt therein to an I-concentration of 8 to 10 molal at a temperature in the range from 30°to 60°C; (b) adding iodine (I2) to said solution to obtain a combined concentration of I5-and I3-ions of about 8 to 10 molal, at least 50% of said ions being I5-ions; (c) contacting granules of a strong base anion exchange resin in the chloride (Cl-) form with the solution formed in steps (a) and (b) at a temperature in the range from 30°to 60°C., said resin being reactable with I5-and I3-ions; (d) continuing said contacting until at least a total of 70% of the anion exchange sites of the resin have exchanged Cl-for I5-and I3-, the exchange being in the I5-and I3-proportions of said solution and continuing the exchange until 50 percent of the exchange sites are I5-exchange sites; and (e) washing said resin with an aqueous wash to remove the exchanged Cl-ions therefrom.