Article having a corrosion inhibiting coating
US4849297A · kind A · utility
14Cited by
19References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1989 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Jan 30, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Corrosion inhibiting calcium-containing amorphous precipitated silica is described. The silica is prepared by admixing simultaneously in a reactor aqueous alkali metal silicate, e.g., sodium silicate, acidifying agent, e.g., hydrochloric acid, and a water-soluble source of calcium, e.g., calcium chloride. The product contains from 6 to 9 weight percent calcium (as CaO). The silica product may be incorporated into a coating composition used for corrodible metallic surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.