Method of protecting a surface
US6224944A · kind A · utility
3Cited by
19References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1994 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Oct 27, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/00112
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention concerns a method of protecting a surface of a carbonatic material from corrosion, the method comprising treatment of the material surface with an acidic cationic silica sol, the pH of the sol preferably being from about 4 to about 7. The invention also concerns a new silica sol useful for performing the method and a method of preparing the new silica sol. Further, the invention concerns carbonatic material comprising a surface layer of silica, the surface of the silica particles comprising a polyvalent metal oxide/hydroxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.