Chromatographic sheet of layer for pressurized layer chromatographic apparatus
US4591524A · kind A · utility
Inventors
Key dates
| Filing date | Jul 15, 1981 |
| Grant date | May 27, 1986 |
| Priority date | — |
| Expiry date | Jul 15, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/252
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An adsorbent layer (stationary phase) for a pressurized layer chromatographic apparatus, for the development of linear chromatogram, is sealed at the edges by impregnation. For the purpose of solvent control some of the adsorbent material is removed in one or several zones of the adsorbent layer near the place of solvent admission, or one or several baffle plates or wires are arranged behind the place(s) of sample application, or if necessary, the adsorbent layer is provided with a conventionally formed concentration zone in the area of the solvent admission. As a result of the impregnation, the migrating solvent composite does not escape at the edges of the adsorbent layer according to the invention in case of overpressure. As a result of the removal of adsorbent material, or the arrangement of baffles or wires, or the application of a concentration zone, the solvent migrates with a straight-line front.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.