Composition and process for preventing corrosion and reducing friction on metallic surfaces
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United States of America Patent
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Aug 10, 1999
Grant Date -
N/A
app pub date -
May 23, 1997
filing date -
Nov 14, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Aqueous acid treatment solution for the treatment of beverage cans, in particular of aluminum, for producing a corrosion-protective, friction-reducing coating which improves the ability to be enameled, which comprises 0.14 to 2.25 mmol/l of an alkylamine oxide or an alkylammonium salt with an alkyl radical having 8 to 22 C atoms, 0.25-1.5 mmol/l of hydroxycarboxylic acids having 4-7 C atoms, complex fluorides and mineral acids, and preferably tannin.
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