Corrosion inhibiting formulations with calcium nitrite
US5527388A · kind A · utility
22Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1995 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | Jan 25, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2103/61
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An admixture for cement compositions is provided which contributes both anodic and cathodic corrosion inhibition, and the cement compositions containing such additives. The cement additive is a combination of an anodic corrosion inhibitor such as calcium nitrite, and a cathodic corrosion inhibitor such as calcium stearate or other fatty acid. The mixed inhibitors in accordance with the invention provide as good or better corrosion inhibition than does calcium nitrite when used alone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.