| 摘要 |
PCT No. PCT/EP95/04469 Sec. 371 Date May 23, 1997 Sec. 102(e) Date May 23, 1997 PCT Filed Nov. 14, 1995 PCT Pub. No. WO96/16205 PCT Pub. Date May 30, 1996Aqueous 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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