Compositions including hardness ions and gluconate and methods employing them to reduce corrosion and etch
First Claim
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1. A method for cleaning an instrument comprising:
- contacting the instrument with a cleaning composition comprising;
(a) a corrosion inhibitor composition comprising;
i) a water soluble magnesium salt;
ii) a water soluble calcium salt; and
iii) a gluconate;
(b) a source of alkalinity; and
(c) a chelating agent;
such that the instrument is cleaned, wherein the cleaning composition reduces corrosion of the instrument by at least about 10%, and wherein the weight ratio of water soluble magnesium salt to water soluble calcium salt is 2;
1, and the weight ratio of water soluble magnesium salt to gluconate is 1;
9.
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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 a variety of surfaces including glass, aluminum, chrome, copper, and steel. The present invention also relates to methods employing these compositions.
162 Citations
26 Claims
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1. A method for cleaning an instrument comprising:
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contacting the instrument with a cleaning composition comprising; (a) a corrosion inhibitor composition comprising; i) a water soluble magnesium salt; ii) a water soluble calcium salt; and iii) a gluconate; (b) a source of alkalinity; and (c) a chelating agent; such that the instrument is cleaned, wherein the cleaning composition reduces corrosion of the instrument by at least about 10%, and wherein the weight ratio of water soluble magnesium salt to water soluble calcium salt is 2;
1, and the weight ratio of water soluble magnesium salt to gluconate is 1;
9. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A composition for cleaning an instrument comprising:
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(a) a corrosion inhibitor composition comprising; i) a water soluble magnesium salt; ii) a water soluble calcium salt; and iii) a gluconate; (b) a source of alkalinity; and (c) a chelating agent; wherein the composition reduces corrosion of the instrument by at least about 10%, and wherein the weight ratio of water soluble magnesium salt to water soluble calcium salt is 2;
1, and the weight ratio of water soluble magnesium salt to gluconate is 1;
9. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification