Acidic aluminum cleaner containing an oxidant and a nonionic surfactant stabilized by a glycol
US5336425A · kind A · utility
15Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1992 |
| Grant date | Aug 9, 1994 |
| Priority date | — |
| Expiry date | Dec 21, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23G1/125
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The stability of an acidic liquid cleaner for aluminum comprising mineral acid, oxidant, polyvalent metal ions, and surfactant is substantially improved by the presence in the cleaner of from 0.05 to 5 g/L of a component selected from the group of glycols containing from 2 to 10 carbon atoms per molecule and mixtures of such glycols. The effectiveness of the cleaner for primary cleaning and de-smutting of aluminum and its alloys is not impaired and may even be improved by the addition of the glycol component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.