Non-chromate corrosion inhibitor formulas based on permanganate sodalite compositions
US8025981B2 · kind B2 · utility
1Cited by
16References
10Claims
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Key dates
| Filing date | Sep 16, 2008 |
| Grant date | Sep 27, 2011 |
| Priority date | — |
| Expiry date | Feb 5, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Sodalite is synthesized in the presence of a stoichiometric quantity of Permanganate ion. After thorough washing to remove trace salts the resulting pigment may be encapsulated with amorphous silica using the Iler process. The resulting pigment has enhanced acid stability and provides excellent corrosion protection on reactive metal substrates such as Aerospace Aluminum or Coil grade Hot-Dip Galvanized Steel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.