Separation of 2-methyl-butanol-1 from pentanol-1 by extractive d

Details Separation of 2-methyl-butanol-1 from pentanol-1 by extractive d Separation of 2-methyl-butanol-1 from pentanol-1 by extractive d

1989-01-30

1990-11-13

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 60, 203 61, 203 65, 568913, B01D 340, C07C 2984

Patent

active

049699776

ABSTRACT:
2-Methyl butanol-1 cannot be completely removed from 2-methyl butanol-1-pentanol-1 mixtures by distillation because of the proximity of their boiling points. 2-methyl butanol-1 can be readily removed from mixtures of these alcohols by using extractive distillation in which the extractive agent is a mixture of aromatic carboxylic acids or aromatic carboxylic esters. Typical examples of effective agents are: benzoic acid, ethyl salicylate and salicylic acid; methyl benzoate, methyl p-hydroxy benzoate and phenyl salicylate.

REFERENCES:
patent: 2551584 (1951-05-01), Carlson et al.
patent: 2575243 (1951-11-01), Carlson et al.
patent: 2595805 (1952-05-01), Morrell et al.
patent: 4710274 (1987-12-01), Berg et al.
patent: 4710275 (1987-12-01), Berg et al.
patent: 4715933 (1987-12-01), Berg et al.
patent: 4732653 (1988-03-01), Berg et al.
patent: 4756803 (1988-07-01), Berg et al.

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