Alkaline cleaner for aluminum
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United States of America Patent
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-
Aug 9, 1988
Issued Date -
N/A
app pub date -
Jul 13, 1987
filing date -
Apr 23, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A cleaning composition bath, concentrate for its preparation, and method of use of an aqueous alkaline cleaner comprising an ethylenediaminetetraacetic acid or nitrilotriacetic acid alkali metal salt, an inorganic alkali metal phosphate, a surfactant and optionally an aluminum sequestrant, other inorganic salts and an alkali metal hydroxide, if needed, to adjust the pH of the composition to at least 11.0.
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