Polar polymeric sorbent based on glycidyl esters for gas and liquid chromatography
US4340483A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1977 |
| Grant date | Jul 20, 1982 |
| Priority date | — |
| Expiry date | Dec 23, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to the polar polymeric sorbent applicable in gas and liquid chromatography, which is based on glycidyl esters. The sorbent is formed by the macroporous copolymer containing 3-70% of polymerized monomeric units with epoxy groups, e.g. glycidyl methacrylate or glycidyl acrylate units, and 97-30% of a crosslinking agent, e.g. alkylene dimethacrylate, alkylene diacrylate, hydroxyalkylene dimethacrylate, hydroxyalkylene diacrylate (alkylene containing 1-6 C atoms), or divinylbenzene. The sorbent may further contain up to 30% of polymerized monomeric units containing nitrile groups, e.g. acrylonitrile and methacrylonitrile units. The polarity of sorbent can be further modified, according to the invention, by the reaction with various nucleophilic agents, e.g. water, alcohols, carboxylic acids and their derivatives, ammonia, amines, thioalcohols, acrylonitrile. The sorbent is thermally and mechanically stable and was used for the gas-chromatographic and liquid-chromatographic separation of complex mixtures of compounds. Its polarity was expressed in terms of modified Rohrschneider indices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.