Process for removing contaminating coatings from metal surfaces
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United States of America Patent
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Apr 14, 1998
Grant Date -
N/A
app pub date -
Apr 16, 1996
filing date -
Apr 25, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for removing contaminating coatings from metal surfaces in which the metal surface to be cleaned is brought into contact with an aqueous alkaline solution containing as an additive 0.1 to 10% by weight, based on the aqueous alkaline solution, of at least one compound of the formula R.sup.1 --O--(CH.sub.2 --CHR.sup.3 --O--).sub.x R.sup.2I in which R.sup.1 and R.sup.2 are individually alkyl of 1 to 15 carbon atoms, R.sup.3 is hydrogen or methyl and x is an integer from 1 to 25.
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