Compositions and process for metal treatment
US4770717A · kind A · utility
1Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1987 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | Sep 30, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C22/78
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Compositions and processes for activating metal surfaces prior to coating with a phosphate compound are disclosed. Colloidal alkyl benzene sulfonate salts are disclosed as a novel class of activating materials to replace titanium containing Jernstedt salt baths for treatment of metal surfaces prior to coating with a protective phosphate material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.