Metal corrosion inhibitor
US4338209A · kind A · utility
45Cited by
10References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1980 |
| Grant date | Jul 6, 1982 |
| Priority date | — |
| Expiry date | Mar 31, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F11/08
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Metal corrosion inhibitor comprising (a) benzoic acid and/or a benzoate, (b) nitrous acid and/or a nitrite, (c) phosphoric acid and/or a phosphate, and (d) at least one selected from mercaptobenzothiazole, its salts, benzotriazole and tolyltriazole, which can exhibit excellent anti-corrosive property to various metals for a long term and can be diluted with an aqueous liquor and can be employed in combination with usual anti-freezing agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.