Composition for controlling the dissolving rate of solid sanitizers
AssigneeArch Chemicals, Inc.
InventorsEllen M. Meyer, Christina D. Moss
Life of this patent
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Abstract
The present invention relates to a tabletted water sanitizer having improved stability and controlled solubility is disclosed and method of making the same. The tabletted sanitizer is preferably comprised of calcium hypochlorite and a dissolving rate controlling amount of poly(maleic acid) salt. Preferably, the calcium hypochlorite has at least 60% available chlorine, and most preferably at least 70% available chlorine. The tablet (or briquette) has between about 0.001% and 20% of the poly(maleic acid) salt, preferably sodium poly(maleic acid), calcium poly(maleic acid) or mixtures thereof. Tablets may be formed using any tabletting or briquetting technique commonly known in the art.
Claims22
A stable solid composition to sanitize water having controlled dissolution comprised of a composition having dissolving rate controlling amount of alkali salt of poly(maleic acid) and a sanitizing agent selected from the group consisting of calcium hypochlorite, hypohalite salts, organic sanitizers, halogenated hydantoins, halogenated isocyanurates, and non-halogenated solid sanitizers, wherein said composition is in the form of a pressed tablet.
A method of treating water with a solid tabletted sanitizing composition comprising:
- a) providing water to be treated;
- and
- b) contacting said tabletted sanitizing composition with said water, wherein said tabletted sanitizing composition is comprised of calcium hypochlorite and a dissolving rate controlling amount of a poly(maleic acid) salt.
A method of preparing a solid tabletted sanitizing composition having a dissolving rate controlling amount of a poly(maleic acid) salt, comprising the steps of:
- a) providing a sanitizing agent selected from the group consisting of calcium hypochlorite, hypohalite salts, organic sanitizers, halogenated hydantoins, halogenated isocyanurates, and non-halogenated solid sanitizers;
- b) precipitating poly(maleic acid) in a salt form;
- c) blending said sanitizing agent with a dissolving rate controlling amount of said poly(maleic acid) salt to form a homogenous mixture;
- and
- d) compacting said blended homogenous mixture into a tablet form.
A method of preparing a solid tabletted sanitizing composition having a dissolving rate controlling amount of a poly(maleic acid) salt, comprising the steps of:
- a) providing a sanitizing agent selected from the group consisting of calcium hypochlorite, hypohalite salts, organic sanitizers, halogenated hydantoins, halogenated isocyanurates, and non-halogenated solid sanitizers;
- b) precipitating poly(maleic acid) in a salt form;
- c) spray graining said sanitizing agent with a dissolving rate controlling amount of said poly(maleic acid) salt to form a homogenous mixture;
- and
- d) compacting said blended homogenous mixture into a tablet form.
Dependencies are inferred from the claim text.