Structured silicas
US4752458A · kind A · utility
10Cited by
2References
10Claims
0Family size
Inventor
Key dates
| Filing date | Feb 11, 1987 |
| Grant date | Jun 21, 1988 |
| Priority date | — |
| Expiry date | Feb 11, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B33/154
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A method of preparing spherical microparticles of silica comprising adding an acid solution to a silicate solution before or after addition of an alkali metal alginate, ammonium alginate, starch, gelatin, pectin or mixtures thereof. The microparticles can be used to prepare macroporous materials having a controlled pore structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.