Method and compositions for coating aluminum
US4191596A · kind A · utility
70Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 1978 |
| Grant date | Mar 4, 1980 |
| Priority date | — |
| Expiry date | Sep 6, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C22/86
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
This invention relates to a method and compositions for coating aluminum in order to improve both corrosion resistance and paint adhesion. By using a coating composition consisting essentially of (a) polyacrylic acid or esters thereof and (b) at least one acid selected from the group consisting of H.sub.2 ZrF.sub.6, H.sub.2 TiF.sub.6, and H.sub.2 SiF.sub.6, the characteristics of the treated aluminum surfaces are improved, while process waste disposal problems associated with conventional chrome/phosphate coating are avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.