Process for the recovery of alkylene glycols

Details Process for the recovery of alkylene glycols Process for the recovery of alkylene glycols

1975-09-12

1977-08-30

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 81, 260637R, B01D 336, C07C 2928

Patent

active

040452948

ABSTRACT:
Ethylene glycol or 1,2-propylene glycol contained in mixtures with lower carboxylate esters of the glycol is recovered by azeotropic distillation of the mixtures with an azeotroping agent which is a hydrocarbon which has a boiling point at atmospheric pressure above 190.degree. C but at most about 220.degree. C and is free from linear secondary and tertiary hydrogen atoms.

REFERENCES:
patent: 3066116 (1962-11-01), Schiller et al.
patent: 3074962 (1963-01-01), Anderson
patent: 3437566 (1969-04-01), Gasser et al.
patent: 3809724 (1974-05-01), Golden
Horsley: Azeotropic Data III (1973), pp. 147; 207-208.
Weissberger: Technique of Organic Chemistry, vol. IV - Distillation pp. 359-372.

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