Activated silica sol
US5573674A · kind A · utility
24Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1995 |
| Grant date | Nov 12, 1996 |
| Priority date | — |
| Expiry date | Oct 27, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/928
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A stable activated silica sol is made by reacting sodium aluminum sulfate and a solution of silica. This solution removes suspended particles from aqueous streams rapidly and effectively. The silica sol is stable for many days and thus can be prepared off-site and transported to the point of use. Further, the activated silica or colloidal silica sol solution of the invention can be continuously added to water and waste water streams, or paper making pulps, stocks and furnishes, without danger of solidifying in the transport systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.