Magnetic carbohydrate particles as carriers for affinity separation purposes
US4687748A · kind A · utility
17Cited by
7References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 7, 1983 |
| Grant date | Aug 18, 1987 |
| Priority date | — |
| Expiry date | Nov 7, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/838
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Magnetically responsive spheres having an average diameter less than 1,000 nm are prepared by dissolving a carbohydrate polymer in a polar solvent, suspending magnetic material in the dissolved carbohydrate, emulsifying the suspension with an emulsion liquid to form an emulsion containing droplets of the suspension and then contacting the emulsion with a crystallizing liquid capable of crystallizing the carbohydrate polymer. The resulting spheres may be bonded with a bioabsorptive material and can be employed in processes such as cell separation, affinity purification or immunochemical assays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.