Method of treating nonferrous metal surfaces by means of an acid activating agent and an organophosphate or organophosphonate and substrates treated by such method
US5306526A · kind A · utility
26Cited by
26References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1992 |
| Grant date | Apr 26, 1994 |
| Priority date | — |
| Expiry date | Apr 2, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C22/34
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of treating a nonferrous metal substrate such as aluminum with an acid activating agent such as HF followed by treating with an organophosphate or organophosphonate. The treatment provides for improved adhesion and flexibility as well as resistance to humidity, salt spray corrosion and detergents of subsequently applied coatings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.