Title: Stabilization of hydrogen peroxide in acid baths for cleaning metals

Abstract: Hydrogen peroxide-containing acidic baths for pickling metals, the bath compositions being stabilized according to the invention so that the baths can be used over long periods of time without appreciable decomposition of hydrogen peroxide, such baths containing from about 10 to 400 g/liter of sulfuric acid, 2 to 80 g/liter of 100% hydrogen peroxide, and 10 to 500 mg/liter of an oxyquinoline derivative stabilizer, the compositions optionally containing a surface active agent, and/or from 0.3 to 2 g/liter of fatty alcohol-ethylene oxide polycondensate stabilizer as well as methods for pickling metals using such baths.

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Inventors: Bakes, Michel (Saint Cloud, FR)
Roche, Michel (Roubaix, FR)

Application Number: 649131
Filing Date: 1976-01-13
Publication_date: 1977-05-10
Assignee: Produits Chimiques Ugine Kuhlmann (Paris, FR)
Primary Class(es): 510/269 134/3, 216/41, 216/106, 216/108, 252/79.2, 252/79.4, 252/186.29, 423/272, 423/584, 510/108, 510/254, 510/372, 510/488, 510/492, 510/494, 510/500
Other Classes:
US Patent Ref:

3514411	May, 1970	Kolobielski	252/148.
3649194	Mar, 1972	Glanville	252/100.
3905907	Sep, 1975	Shiga	252/79.

Other Refs:
Primary Examiner: Weinblatt, Mayer
Assistant Examiner:
Attorney: Brooks Haidt Haffner & Delahunty