Aromatics - non-armoatics separation by permeation through thermally crosslinked nitrile rubber membranes
US4885096A · kind A · utility
10Cited by
7References
8Claims
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Key dates
| Filing date | Jun 13, 1988 |
| Grant date | Dec 5, 1989 |
| Priority date | — |
| Expiry date | Jun 13, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/144
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Aromatic hydrocarbons are separated from mixtures of same with non-aromatics by permeation through a membrane of thermally crosslinked polyconjugated diene rubber containing from 15 to 50 wt % nitrile groups. Thermal crosslinking increases selectivity far beyond the level obtained when crosslinking is caused by other techniques. The separations are conducted under pervaporation or perstraction conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.