초록 ▼

The invention is concerned with the improved compositions for the treatment and regeneration of ion exchange resin beds typically used in water softening systems for domestic or industrial applications. The compositions of the invention include those designed for addition to sodium chloride to yield

The invention is concerned with the improved compositions for the treatment and regeneration of ion exchange resin beds typically used in water softening systems for domestic or industrial applications. The compositions of the invention include those designed for addition to sodium chloride to yield a final regenerating medium for exchange resins, along with finished compositions including a preponderant proportion of sodium chloride. In pertinent part, the compositions of the invention include respective quantitites of citric acid and a salt of citric acid such as sodium or potassium citrate. In particularly preferred form, the compositions include a minor amount of an anti-caking agent selected from the group consisting of alkyl substituted napthalene sulfonates. The compositions in accordance with the invention are characterized by relatively low pH levels and the ability to minimize the oxidation of ferrous iron to the insoluble ferric form.

대표청구항 ▼

A composition for addition to sodium chloride to yield a regenerating medium for cation exchange resins, said composition comprising: from about 0.1 to 10% by weight of citric acid; from about 0.01 to 1% by weight of an anti-caking agent for said regenerating medium, said agent being an alkyl substi

A composition for addition to sodium chloride to yield a regenerating medium for cation exchange resins, said composition comprising: from about 0.1 to 10% by weight of citric acid; from about 0.01 to 1% by weight of an anti-caking agent for said regenerating medium, said agent being an alkyl substituted napthalene sulfonate; and at least about 50% by weight of a salt of citric acid, the pH of a saturated solution of said composition in water at room temperature being from about 4 to 8. A composition for regenerating a cation exchange resin, comprising: a quantity of sodium chloride; respective minor amounts of citric acid and a salt of citric acid admixed with said sodium chloride.