Separation of methylene chloride from ethyl vinyl ether by extra

Details Separation of methylene chloride from ethyl vinyl ether by extra Separation of methylene chloride from ethyl vinyl ether by extra

1991-04-25

1992-06-23

Bascomb, Jr., Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 58, 203 60, 203 62, 203 63, 203 64, 568693, 570262, B01D 340, C07C 1738, C07C 4316

Patent

active

051240050

ABSTRACT:
Methylene chloride cannot be completely separated from ethyl vinyl ether by conventional distillation or rectification because of the minimum boiling azeotrope. Methylene chloride can be readily separated from ethyl vinyl ether by extractive distillation. Typical effective agents are ethylene glycol methyl ether acetate, 2-hexanone and 1-nitropropane.

REFERENCES:
patent: 2641616 (1953-06-01), Ellinger
patent: 2779720 (1957-01-01), Tanona
patent: 3878058 (1975-04-01), Tanaka et al.
patent: 4036703 (1977-07-01), Leroi et al.
patent: 4121978 (1978-10-01), Becuwe

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