Separation of m-diisopropyl benzene from p-diisopropyl benzene b

Details Separation of m-diisopropyl benzene from p-diisopropyl benzene b Separation of m-diisopropyl benzene from p-diisopropyl benzene b

1989-09-15

1990-02-27

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 63, 203 64, 585808, 585866, B01D 340, C07C 708

Patent

active

049043463

ABSTRACT:
Meta and para-diisopropyl benzenes cannot be easily separated from each other by distillation because of the closeness of their vapor pressures. m-Diisopropyl benzene can be readily removed from p-diisopropyl benzene by extractive distillation using certain high boiling organic compounds. Effective extractive agents are diphenyl ether, dimethyl adipate, diisononyl adipate, tributyl phosphate and ethylene glycol phenyl ether.

REFERENCES:
patent: 2461993 (1949-02-01), Mckinnis
patent: 2805258 (1957-09-01), Boodman et al.
patent: 2840621 (1958-06-01), Corson et al.
patent: 3222349 (1965-12-01), Holder

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