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Combination of soluble lithium salt and soluble aluminum or silicate salt as a glass etching inhibitor

  • US 8,399,393 B2
  • Filed: 05/03/2010
  • Issued: 03/19/2013
  • Est. Priority Date: 05/03/2010
  • Status: Active Grant
First Claim
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1. A warewashing detergent composition comprising:

  • (a) between about 5% by weight and 75% by weight of an alkalinity source; and

    (b) between about 0.1% by weight and 2.5% by weight of a glass corrosion inhibitor comprising a soluble lithium salt and at least one of a soluble aluminum salt and a soluble silicate salt,wherein if a soluble aluminum salt is present, the soluble aluminum salt and the soluble lithium salt are present in an amount sufficient to provide a weight ratio of soluble aluminum salt to soluble salt of between about 410;

    1 and about 1;

    10, andwherein if a soluble silicate salt is present, the soluble silicate salt and the soluble lithium salt are present in an amount sufficient to provide a weight ratio of soluble silicate salt to soluble lithium salt of between about 40;

    1 and about 1;

    40.

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