Separation of styrene from ethyl benzene or o-xylene by azeotrop

Details Separation of styrene from ethyl benzene or o-xylene by azeotrop Separation of styrene from ethyl benzene or o-xylene by azeotrop

1990-06-04

1990-10-30

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

585805, 585806, 585807, 585866, B01D 336, B01D 340, C07C 706

Patent

active

049666568

ABSTRACT:
Styrene cannot be easily removed from ethyl benzene or o-xylene by distillation because of the closeness of their boiling points. Styrene can be readily separated from ethyl benzene or o-xylene by means of azeotropic or extractive distillation using certain esters. Typical effective agents are ethyl isovalerate, propyl caproate, butyl propionate and hexyl formate.

REFERENCES:
patent: 2380019 (1945-07-01), Bloomer
patent: 2385235 (1945-09-01), Schneider
patent: 2467197 (1949-04-01), Engel
patent: 2480919 (1949-09-01), Greene
patent: 3328267 (1967-06-01), Muller
patent: 3684664 (1972-08-01), Abe et al.
patent: 3763015 (1973-10-01), Morimoto et al.

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