Separating vinyltoluene from other alkenylaromatics
US4371428A · kind A · utility
7Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1980 |
| Grant date | Feb 1, 1983 |
| Priority date | — |
| Expiry date | Nov 24, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Vinyltoluene is separated from close-boiling, olefinically unsaturated alkylaromatic compounds by extractive distillation. For example, vinyltoluene is separated from cis-.beta.-methylstyrene, and from .alpha.-methylstyrene by extractive distillation using .gamma.-butyrolactone as the extracting agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.