1-Alkyl-4-isopropylbenzene desorbents for para-xylene
US4139572A · kind A · utility
1Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1977 |
| Grant date | Feb 13, 1979 |
| Priority date | — |
| Expiry date | Aug 18, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/13
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Para-xylene is selectively adsorbed from a C.sub.8 aromatic hydrocarbon feed by a crystalline selective adsorbent, and then the para-xylene is subsequently desorbed by contacting the resulting adsorbent with a 1-(lower alkyl)-4-isopropylbenzene desorbent, wherein the lower alkyl group contains one to two carbon atoms. The desorbent effectively desorbs the para-xylene from the adsorbent, and the para-xylene may be produced as an enriched product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.