Method of separating .gamma.-butyrolactone from mixtures contain

Details Method of separating .gamma.-butyrolactone from mixtures contain Method of separating .gamma.-butyrolactone from mixtures contain

1990-11-05

1991-07-09

Basscomb, Wilbur

Distillation: processes, separatory

Plural distillations performed on same material

One a distillation under positive pressure or vacuum

203 78, 203DIG19, 549295, 568864, B01D 314, C07D30132, C07D30733

Patent

active

050303287

ABSTRACT:
A method of separating .gamma.-butyrolactone from a mixture containing ethanol, tetrahydrofuran, water, n-butanol, 1,4-butanediol, diethyl succinate and .gamma.-butyrolactone, by distillation in vacuum columns.

REFERENCES:
patent: 4767869 (1988-08-01), Harrison et al.
patent: 4919765 (1990-04-01), Wilkes et al.
patent: 4945173 (1990-07-01), Wood

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