Process for preparing silica gel and process for producing dehumidifying element
US6187381A · kind A · utility
2Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1998 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Jun 17, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/259
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for preparing silica gel is disclosed. The silica gel is produced by immersing a base in silica sol, drying the impregnated base in a mixed solution of an alkali silicate and an alkali hydroxide, removing the impregnated base form the mixed solution, heating the impregnated base, and subsequently treating the impregnated base with an acid. A sufficient amount of silica gel for use as a dehumidifying element can be produced through a single series of treatments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.