Compositions including hardness ions and gluconate and methods employing them to reduce corrosion and etch
First Claim
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1. A hard surface cleaner comprising surfactant and about 0.01 to about 20 wt-% corrosion inhibitor;
- the corrosion inhibitor consisting essentially of;
about 2 to about 85 wt-% water soluble calcium salt;
about 10 to about 95 wt % water soluble magnesium salt; and
about 2 to about 50 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;
the weight ratio of water soluble calcium salt to gluconate is about 1-19;
1-13, and the detergent comprises less than about 0.5 wt-% phosphorous-containing compounds.
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Abstract
The present invention relates to compositions including a water soluble magnesium salt, water soluble calcium salt, and gluconate, which have a beneficial effect on corrosion during cleaning. The present compositions can reduce corrosion of glass, aluminum, or steel. The present invention also relates to methods employing these compositions.
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11 Claims
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1. A hard surface cleaner comprising surfactant and about 0.01 to about 20 wt-% corrosion inhibitor;
- the corrosion inhibitor consisting essentially of;
about 2 to about 85 wt-% water soluble calcium salt; about 10 to about 95 wt % water soluble magnesium salt; and about 2 to about 50 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;
the weight ratio of water soluble calcium salt to gluconate is about 1-19;
1-13, and the detergent comprises less than about 0.5 wt-% phosphorous-containing compounds.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- the corrosion inhibitor consisting essentially of;
Specification