Acidic aluminum cleaner containing an oxidant and a nonionic surfactant stabilized by a glycol
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United States of America Patent
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Aug 9, 1994
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N/A
app pub date -
Dec 21, 1992
filing date -
Jun 19, 1990
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Abstract
The stability of an acidic liquid cleaner for aluminum comprising mineral acid, oxidant, polyvalent metal ions, and surfactant is substantially improved by the presence in the cleaner of from 0.05 to 5 g/L of a component selected from the group of glycols containing from 2 to 10 carbon atoms per molecule and mixtures of such glycols. The effectiveness of the cleaner for primary cleaning and de-smutting of aluminum and its alloys is not impaired and may even be improved by the addition of the glycol component.
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