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WAREWASHING COMPOSITION FOR USE IN AUTOMATIC DISHWASHING MACHINES, AND METHOD FOR USING

  • US 20080274930A1
  • Filed: 05/02/2008
  • Published: 11/06/2008
  • Est. Priority Date: 05/04/2007
  • Status: Active Grant
First Claim
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1. A warewashing composition comprising:

  • (a) a cleaning agent comprising a detersive amount of a surfactant;

    (b) an alkaline source in an amount effective to provide a use composition having a pH of at least about 8 when the use composition is measured at a solids concentration of about 0.5 wt %; and

    (c) a corrosion inhibitor in an amount sufficient for reducing corrosion of a substrate when the warewashing composition is combined with a diluent at a dilution ratio of at least about 20;

    1 of diluent to warewashing composition to form a use composition, wherein the corrosion inhibitor comprises a salt of calcium, magnesium, or a mixture of calcium and magnesium, and wherein the salt has a water solubility of less than about 0.5 wt % in water at about 20°

    C. and atmospheric pressure so that the salt precipitates to form a protective layer on the substrate in contact with the use composition.

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