Metallic substrate treatment methods and articles comprising a phosphonate functionalized layer
US12018380B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2019 |
| Grant date | Jun 25, 2024 |
| Priority date | — |
| Expiry date | Oct 1, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60B1/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Metallic substrate treatment methods and articles comprising a phosphonate functionalized layer are provided. The method comprises contacting a metallic substrate comprising at least one of aluminum and an aluminum alloy with a fluid to form a phosphonate functionalized layer on at least a region of the metallic substrate. The fluid comprises at least one of a phosphonate containing acid and a derivative thereof. At least one of the phosphonate containing acid and the derivative thereof comprises a pKa of a first acidic proton. The fluid comprises a pH at least 0.5 pH value greater than the pKa of the first acidic proton. The article comprises a metallic substrate comprising aluminum or an aluminum alloy and a phosphonate functionalized layer on at least a region of the metallic substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.