Separating indene from unsaturated alkylaromatics

Details Separating indene from unsaturated alkylaromatics Separating indene from unsaturated alkylaromatics

1980-07-02

1981-07-28

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 57, 203 58, 203 71, 585807, 585808, 585857, 585864, 585865, B01D 340, C07C 708

Patent

active

042808812

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.

REFERENCES:
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patent: 2996438 (1961-08-01), Schwoegler et al.
patent: 3018228 (1962-01-01), Cornell
patent: 3132078 (1964-05-01), Backlund
patent: 3210259 (1965-10-01), Cornell et al.
patent: 3647900 (1972-03-01), Rozman
patent: 3723256 (1973-03-01), Thompson

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