Enhanced bonding of phosphoric and phosphoric acids to oxidized substrates
US6645644B1 · kind B1 · utility
51Cited by
11References
13Claims
0Family size
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Key dates
| Filing date | Sep 22, 2000 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Oct 16, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/268
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Ligand-containing coating layers on the surface of hydroxide-bearing substrates comprising transition metal atoms selected from the group consisting of Group IVB, Group VB and Group VIB of the Periodic Chart covalently bonded to the surface hydroxyls of said substrate, wherein each transition metal atom is further covalently bonded to one or more ligands of said coating layer, thereby covalently bonding said coating layer to said substrate. Disclosed ligands include inorganic phosphates and organic phosphonates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.