Separating indene from unsaturated alkylaromatics
US4280881A · kind A · utility
9Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1980 |
| Grant date | Jul 28, 1981 |
| Priority date | — |
| Expiry date | Jul 2, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Indene is separated from close boiling, olefinically unsaturated alkylaromatic compounds by extractive distillation. For example, indene is separated from trans-.beta.-methylstyrene, and from 2-, 3- and 4-methylstyrene by extractive distillation using 1-methyl-2-pyrrolidone as the extracting agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.