Separation of m-diisopropylbenzene from p-diisoproylbenzene by a

Details Separation of m-diisopropylbenzene from p-diisoproylbenzene by a Separation of m-diisopropylbenzene from p-diisoproylbenzene by a

1989-01-09

1989-06-06

Bascomb, Wilbur

Distillation: processes, separatory

With disparate physical separation

Utilizing liquid-liquid extracting of distillation product

203 62, 568335, 585808, 585835, 585839, 585864, B01D 338, C07C 706

Patent

active

048368962

ABSTRACT:
Meta- and para-diisopropylbenzenes cannot be easily separated from each other by distillation because of the closeness of their vapor pressures. m-Diisopropylbenzene can be readily removed from p-diispropylbenzene by azeotropic distillation using acetophenone. The acetophenone - m-diisopropylbenzene azeotrope can be separated by solvent extraction with propylene glycol to remove the acetophenone and the propylene glycol - acetophenone mixture is readily separated from each other by rectification.

REFERENCES:
patent: 2398689 (1946-04-01), Bloomer
patent: 2461993 (1949-02-01), McKinnis
patent: 2805258 (1957-09-01), Boodman
patent: 2840621 (1958-06-01), Corson et al.
patent: 3222349 (1965-12-01), Holder
patent: 4128594 (1978-12-01), Westernacher

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