Specific 3-alkylamino-2-hydroxysuccinic acids and their salts as corrosion inhibitors for ferrous metals
US9290851B2 · kind B2 · utility
9Cited by
22References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 3, 2014 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Jun 3, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F11/18
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Corrosion inhibitors and methods for inhibiting or reducing corrosion of metallic surfaces are provided. A corrosion inhibitor composition may include a 3-alkylamino-2-hydroxysuccinic acid compound. A method of inhibiting corrosion of a metallic surface in an aqueous system includes the step of contacting the surface with an effective amount of a corrosion inhibitor composition. The corrosion inhibitor composition may include other components, such as zinc, and it may also exclude phosphorus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.