Process for preparing porous spherical silica xerogels
US6103209A · kind A · utility
9Cited by
3References
18Claims
0Family size
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Key dates
| Filing date | Apr 8, 1996 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Apr 8, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B33/163
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process for preparing porous spherical silica particles substantially consisting in emulsifying an acidic silica sol in a dispersing media, gelifying the microdrops of the sol in the emulsified state and submitting the resulting gel to thermal treatment in the presence of the emulsifier liquid and of sol gelation base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.