Process for surface treatment of sheet steel partially coated with zinc or zinc alloy
US5683751A · kind A · utility
10Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1996 |
| Grant date | Nov 4, 1997 |
| Priority date | — |
| Expiry date | Jul 22, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F11/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An aqueous solution useful for protecting steel from corrosion containing an alkaline aliphatic monocarboxylic acid salt having a linear chain of 6 to 12 carbon atoms, a triazole or diazole hydrocarbon and a non-ionic surfactant, the solution having a pH below 7. This aqueous solution is especially suited to the treatment of sheets at the outlet of an electrogalvanization line, particularly in a chloride medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.