Composite chromatographic article
US4810381A · kind A · utility
102Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1987 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | Dec 28, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249986
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composite chromatographic article comprising: PA1 (a) a polytetrafluoroethylene fibril matrix, and PA1 (b) non-swellable sorptive particles enmeshed in said matrix, the ration of non-swellable sorptive particles to polytetrafluoroethylene being in the range of 19:1 to 4:1 by weight, said composite article having a net surface energy in the range of 20 to 300 milliNewtons per meter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.