Porous cross-linked polyvinyl alcohol particles, process for producing the same, and separating agent composed of the same
US4863972A · kind A · utility
67Cited by
4References
5Claims
0Family size
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Key dates
| Filing date | Jul 7, 1987 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Jul 7, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2329/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Porous cross-linked polyvinyl alcohol particles which is used for a chromatographic medium is prepared by: PA0 dispersing an aqueous solution of a mixture of polyvinyl alcohol and a salt in an organic solvent; PA0 allowing a gel to form spontaneously from the dispersion; and PA0 reacting the gel with a cross-linking agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.