Method for preventing the formation of white rust on a zinc-coated steel surface
US12203175B2 · kind B2 · utility
0Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2019 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Apr 13, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F14/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for preventing the formation of white rust on a steel surface at least partially coated with zinc includes a) bringing said surface, preferably under thermal load, into contact with an aqueous composition, the pH of which is between 6.5 and 8.5 comprising at least one organic acid of formula: R—X—OH (I)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.