Separation of propylene glycol from ethylene glycol by azeotropi

Details Separation of propylene glycol from ethylene glycol by azeotropi Separation of propylene glycol from ethylene glycol by azeotropi

1994-06-30

1995-06-20

Bascomb, Jr., Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 62, 203 68, 203 69, 203 70, 568868, B01D 336, C07C 3120

Patent

active

054258537

ABSTRACT:
Propylene glycol is difficult to separate from ethylene glycol by conventional distillation or rectification because of the proximity of their boiling points. Propylene glycol can be readily separated from ethlene glycol by azeotropic distillation. Effective agens are m-diisopropyl benzene, 1-octene, 3-carene and myrcene.

REFERENCES:
patent: 3809724 (1974-05-01), Golden
patent: 4935102 (1990-06-01), Berg
patent: 4966658 (1990-10-01), Berg
patent: 4980033 (1990-12-01), Berg

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