Aqueous solution for the cold-working treatment of steel sheet
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United States of America Patent
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Sep 29, 1998
Grant Date -
N/A
app pub date -
Dec 9, 1996
filing date -
Dec 7, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
According to the invention, the solution contains a water-soluble salt of heptanoic acid and an oxidizing agent and, preferably, a wetting agent. By virtue of the combination of these compounds, low concentrations are sufficient to obtain satisfactory corrosion protection, which makes it possible to maintain a nonfatty surface appearance (on the treated sheet) and facilitates the treatment of the solution effluent (or that of the subsequent degreasing effluent).
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