Aqueous alkaline metal descaling concentrate and method of use
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United States of America Patent
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Nov 19, 1996
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app pub date -
Jul 14, 1995
filing date -
Jul 14, 1995
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Abstract
The scale formed by use of alkaline salt-based cleaners and which comprises one or more alkaline salts and organic scale is removed by applying an aqueous solution comprising alkali metal carbonate salts and optionally, a hydrotrope to remove the organic scale. A mixture of potassium and sodium carbonate salts has been found to effect better descaling than use of either of the salts alone.
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