Highly disperse magnetic metal oxide particles, processes for their preparation and their use
US5776360A · kind A · utility
17Cited by
4References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 3, 1997 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Jan 3, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2995
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention relates to magnetic particles comprising mixed oxides of divalent metals and iron (III), having a diameter of 1-10 nm and a surface area of 120-350 m.sup.2 /g, with silanes bound to the surface of said particle. It also relates to (1) the process for making said particles by simultaneous precipitation and silanization from aqueous solution and (2) their use as carrier materials for the magnetic separation of substances immobilized therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.