Conversion coating and anodizing sealer with no chromium
US8486203B2 · kind B2 · utility
0Cited by
13References
32Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 16, 2010 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Oct 18, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C22/34
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Aqueous acidic coating solutions containing a water soluble divalent zinc compound, a complex fluoride compound, and an organic inhibitor for improving the corrosion resistance and adhesive bonding characteristics of aluminum, aluminum alloys, anodic coatings and sacrificial coatings, are disclosed. Suitable organic inhibitors include oximes, such as salicylaldoxime, and/or quinolines, particularly 8-hydroxyquinoline, and mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.