Chromium-free aluminum treatment
US5641542A · kind A · utility
8Cited by
15References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1995 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Oct 11, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2202/25
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of forming a protective coating on aluminum and aluminum alloy surfaces to improve adherence of siccative coatings such as inks, paints, and lacquers. The method involves rinsing acid treatments from aluminum surfaces followed by coating the aluminum surfaces with a polymeric composition. The method provides improved adhesion of siccative coverings to treated aluminum surfaces over chrome containing and non-chrome containing fluoroacid and polymer mixture treatments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.