Distillation: processes – separatory – Adding material to distilland except water or steam per se – Organic compound
Patent
1995-04-07
1995-09-26
Bascomb, Jr., Wilbur
Distillation: processes, separatory
Adding material to distilland except water or steam per se
Organic compound
203 51, 203 56, 203 60, 203 63, 203 65, 203 67, 585805, 585808, 585860, 585864, 585866, B01D 340, C07C 708
Patent
active
054531675
ABSTRACT:
p-Xylene cannot be separated from m-xylene by distillation or rectification because of the proximity of their boiling points. p-Xylene can be separated from m-xylene by means of extractive distillation. Effective agents are 3-ethylphenol and isopropyl palmitate. Effective agents for separating mixtures of p-xylene, m-xylene and o-xylene are 2-butoxyethyl acetate and 1,1,1-trichloroethane.
REFERENCES:
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patent: 4673465 (1987-06-01), Berg et al.
patent: 5039380 (1991-08-01), Berg
patent: 5091059 (1992-02-01), Berg
patent: 5094723 (1992-03-01), Berg
patent: 5094725 (1992-03-01), Berg
Bascomb, Jr. Wilbur
Berg Lloyd
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