Process for preparation of hard and porous polyvinylalcohol gels
US4104208A · kind A · utility
10Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1976 |
| Grant date | Aug 1, 1978 |
| Priority date | — |
| Expiry date | Dec 1, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2357/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the preparation of hard and porous polyvinylalcohol gels for aqueous gel permeation chromatography, comprises suspension-polymerizing vinyl acetate with diethylene glycol dimethacrylate or glycidyl methacrylate in the presence of a diluent which controls pore size of the product as a crosslinking agent, saponifying the resulting porous polyvinyl acetate gel with an alkali, and subjecting the resulting porous polyvinylalcohol gel to post-crosslinking with epichlorohydrin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.