Distillation of 1,4-butanediol

Details Distillation of 1,4-butanediol Distillation of 1,4-butanediol

1982-01-11

1983-12-06

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

Plural distillations performed on same material

One a distillation under positive pressure or vacuum

203 18, 203 88, 203DIG19, 568868, B01D 306, B01D 326, C07C 2980, C07C 3120

Patent

active

044191898

ABSTRACT:
Excess water and color-forming materials present in crude 1,4-butanediol are reduced by subjecting the crude 1,4-butanediol to distillation under conditions wherein substantially all the water present in the crude 1,4-butanediol is first removed and then the 1,4-butanediol with reduced water content is further refined by flash evaporation under vacuum.

REFERENCES:
patent: 2629686 (1953-02-01), Grosser
patent: 2768214 (1956-10-01), McKinley
patent: 2950326 (1960-08-01), Hort
patent: 2967893 (1961-01-01), Hort
patent: 3852164 (1974-12-01), Chow et al.
patent: 3891511 (1975-06-01), Danneil et al.
patent: 3945891 (1976-03-01), Aal et al.
patent: 4032458 (1977-06-01), Cooley et al.
patent: 4032583 (1977-06-01), Arganbright
patent: 4162145 (1979-07-01), Alleman
R. J. Hengstebeck: Distillation Principles and Design Produres, pp. 17-21; 1961.

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