Inhibition of carbon dioxide corrosion of metals
US5607623A · kind A · utility
11Cited by
12References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1995 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Mar 8, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/939
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Polyaspartic acid and its salts ms used as a carbon dioxide corrosion inhibitor for ferrous metal surfaces in contact with a substantially acidic corrosive aqueous saline environment. In particular, carbon dioxide corrosion of mild steel in brine substantially free of dissolved oxygen can be effectively inhibited under mild to moderate dynamic flow use conditions by relatively low concentrations of polyaspartic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.