Compositions and methods for inhibiting corrosion in aqueous media
US8025840B2 · kind B2 · utility
6Cited by
35References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2008 |
| Grant date | Sep 27, 2011 |
| Priority date | — |
| Expiry date | Jul 16, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/08
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Methods and compositions are provided for corrosion inhibition treatment of aqueous systems such as cooling water systems. The methods include conjoint use of a polyvalent metal ion, such as Al or Mn and a corrosion inhibitor/deposit control agent (DCA) to the water system. The corrosion inhibitor DCA agent may be an organic compound such as a hydroxyacid, phosphonocarboxylic acid, polyhydroxysuccinic acid, or polymaleic acid or anhydride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.