Method for removing iron sulfide scale from metal surfaces
US4351673A · kind A · utility
14Cited by
7References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 22, 1981 |
| Grant date | Sep 28, 1982 |
| Priority date | — |
| Expiry date | May 22, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23G1/088
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of removing ferrous sulfide from ferrous metal surfaces comprising contacting the ferrous sulfide with an aqueous composition comprising an acid selected from the group consisting of maleic acid, maleic anhydride, and the alkali metal and ammonium salts of maleic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.