Manufacture of silica bodies using sol-gel techniques
US6571582B2 · kind B2 · utility
4Cited by
5References
12Claims
0Family size
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Key dates
| Filing date | Apr 19, 2001 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Jun 21, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C1/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The use of silica powders having large particle sizes in making sol-gel silica bodies has been found to have important advantages. Among these are higher gel strength, higher silica loading, more rapid aging and drying of the gel, a reduction in the amount of organic additives leading to reduced process time required for organic burn-off, and easier removal of contaminant particles due to their larger size. It was also discovered that spherical particle morphology contributes to the improved properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.