Separating vinyltoluene from other alkenylaromatics

Details Separating vinyltoluene from other alkenylaromatics Separating vinyltoluene from other alkenylaromatics

1980-11-24

1983-02-01

Sever, Frank

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 58, 208347, 585808, B01D 340

Patent

active

043714285

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.

REFERENCES:
patent: 3210259 (1965-10-01), Cornell et al.
patent: 3953300 (1976-04-01), Ginnasi et al.
patent: 4280881 (1981-07-01), Montagana et al.

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