Purification of 1,4-butanediol

Details Purification of 1,4-butanediol Purification of 1,4-butanediol

1981-09-21

1983-05-17

Sever, Frank

Distillation: processes, separatory

Plural distillations performed on same material

One a distillation under positive pressure or vacuum

203 91, 568868, B01D 310

Patent

active

043838952

ABSTRACT:
Color-forming materials or their precursors present in crude 1,4-butanediol are reduced more efficiently 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 distilled to remove the color-forming materials.

REFERENCES:
patent: 2629686 (1953-02-01), Grosser
patent: 2768214 (1956-10-01), McKinley et al.
patent: 2950326 (1960-08-01), Hort
patent: 2967893 (1961-01-01), Hort et al.
patent: 3852164 (1974-12-01), Chow et al.
patent: 3891511 (1975-06-01), Danneil et al.

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