General purpose aqueous cleaner
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United States of America Patent
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Nov 10, 1998
Issued Date -
N/A
app pub date -
Sep 5, 1996
filing date -
Sep 23, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
An aqueous metal cleaning composition is provided which comprises an alkalinity providing agent such as alkali metal carbonate and/or bicarbonate salts and a low foaming surfactant. The aqueous cleaning solution has specific foam height and foam collapse characteristics, and provides for substantially complete phase separation of a contaminant phase from the aqueous cleaning composition such that there is substantially no aqueous phase drag out into the contaminant phase; and the contaminant phase can be removed easily, and the aqueous cleaning solution can be recovered and reused.
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