Corrosion inhibiting aqueous, acidic compositions comprising metal-chelating O-hydroxybenzylamine compound
US4959103A · kind A · utility
4Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1989 |
| Grant date | Sep 25, 1990 |
| Priority date | — |
| Expiry date | Aug 9, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F11/142
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
This invention relates to an aqueous, acidic composition useful to deposit a corrosion inhibiting and adhesion promoting coating on a metal substrate and a method for doing same. The composition has a pH of between about 2 and about 6 and comprises water-soluble or water-dispersible metal-chelating O-hydroxybenzylamine compound, wherein the amine moiety contains pendant ethanol or propanol moiety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.