Permanganate based conversion coating compositions
US11408077B2 · kind B2 · utility
0Cited by
10References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 1, 2020 |
| Grant date | Aug 9, 2022 |
| Priority date | — |
| Expiry date | Jun 1, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23G1/24
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A composition for application to a substrate comprising a carrier, a permanganate ion source, and a corrosion inhibitor comprising a rare earth ion, an alkali metal ion, an alkaline earth metal ion, and/or a transition metal ion is disclosed. A substrate or article including the composition for application to a substrate, and a method of treating a substrate comprising applying the composition to a substrate to form a permanganate treated surface of the substrate, and applying a lithium containing composition on the permanganate treated surface are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.