Separation of styrene from xylenes
US4031153A · kind A · utility
5Cited by
1References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 25, 1975 |
| Grant date | Jun 21, 1977 |
| Priority date | — |
| Expiry date | Sep 25, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A stream containing styrene and mixed xylenes, such as may be recovered from pyrolysis gasoline, is fractionated to obtain a stream containing ortho-xylene and styrene. Styrene is separated from the latter stream by an extraction process which employs succinonitrile as the solvent. Styrene is selectively absorbed by the succinonitrile, and is subsequently recovered from the resulting extract phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.