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COMPOSITIONS INCLUDING HARDNESS IONS AND GLUCONATE AND METHODS EMPLOYING THEM TO REDUCE CORROSION AND ETCH

  • US 20080287334A1
  • Filed: 05/02/2008
  • Published: 11/20/2008
  • Est. Priority Date: 05/04/2007
  • Status: Active Grant
First Claim
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1. A corrosion inhibiting composition comprising:

  • about 1 to about 98 wt-% water soluble calcium salt and water soluble magnesium salt; and

    about 1 to about 60 wt-% gluconate;

    wherein the weight ratio of water soluble magnesium salt to water soluble calcium salt is about 1-2;

    1-2;

    the weight ratio of water soluble magnesium salt to gluconate is greater than 1;

    1; and

    the weight ratio of water soluble calcium salt to gluconate is about 1-19;

    1;

    13.

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