Stabilization of hydrogen peroxide in acid baths for cleaning metals
US4022703A · kind A · utility
21Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1976 |
| Grant date | May 10, 1977 |
| Priority date | — |
| Expiry date | Jan 13, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F1/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.