Rinsing solutions for acid cleaned iron and steel surfaces
US3973998A · kind A · utility
22Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1975 |
| Grant date | Aug 10, 1976 |
| Priority date | — |
| Expiry date | May 5, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23G1/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Metal surfaces, after being cleaned of rust with an aqueous acid solution, are rinsed with an aqueous solution of a chelating agent and an ammonium or alkali metal silicate. Such rinsed surfaces remain rust free for extended periods of time. When coated with primer and top-coat paints, excellent durability and corrosion resistance are obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.