Scale and corrosion inhibitors
US6814885B2 · kind B2 · utility
6Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2002 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | Dec 30, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/28
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A scale and corrosion inhibitor for use in the treatment of water comprises at least one oxyalkylene unit and at least one phosphonate unit (e.g. a unit derived prom a mono- or di-phosphonic acid such as VPA or VDPA). Inhibitors according to the present invention have been found to exhibit both scale-inhibiting and corrosion-inhibiting properties, especially in the treatment of cooling water and water used in oilfield applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.