Process for preparing stable inorganic pigment
US4334933A · kind A · utility
17Cited by
10References
4Claims
0Family size
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Key dates
| Filing date | Dec 31, 1979 |
| Grant date | Jun 15, 1982 |
| Priority date | — |
| Expiry date | Dec 31, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/80
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for preparing a stable inorganic pigment coated with a fine amorphous silica which comprises forming a silica sol in an aqueous prepared slurry of an inorganic pigment by reacting an alkali silicate solution with one or more acid gases so that a fine silica sol covers the surfaces of the particles of the inorganic pigment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.