Separation of 1,4-butanediol from hydrogenation mixtures

Details Separation of 1,4-butanediol from hydrogenation mixtures Separation of 1,4-butanediol from hydrogenation mixtures

1993-02-17

1994-08-30

Richter, Johann

Distillation: processes, separatory

Plural distillations performed on same material

One a distillation under positive pressure or vacuum

568864, 568868, 203DIG19, B01D 300, C07C 2700

Patent

active

053424883

ABSTRACT:
A process for the separation of 1,4-butanediol from mixtures obtained by the catalytic hydrogenation of maleates, fumarates, and/or succinates, which also contain tetrahydrofuran, water, C.sub.1 -C.sub.4 alcohols, succinic diesters, hydroxybutyrates, alkylhydroxyalkyl succinates, gamma-butyrolactone and butyrates, in addition to 1,4-butanediol, comprising the following steps:

REFERENCES:
patent: 4656297 (1987-04-01), Kouba et al.
patent: 5030328 (1991-07-01), Fischer et al.

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