Coating composition and method for the treatment of formed metal surfaces
US5139586A · kind A · utility
20Cited by
14References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1991 |
| Grant date | Aug 18, 1992 |
| Priority date | — |
| Expiry date | Feb 11, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C22/361
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An aqueous, acidic composition for application to aluminum and aluminum alloy surfaces comprising a source of zirconium ions, a source of fluoride ions, a source of phosphate ions, a phosphate acid ester, a polyethylene glycol ester of a fatty acid, and nitric acid, and a method for treating aluminum and aluminum alloy surfaces with such a composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.