Recovery of 3,4-epoxy-1-butene from 1,3-butadiene oxidation effl

Details Recovery of 3,4-epoxy-1-butene from 1,3-butadiene oxidation effl Recovery of 3,4-epoxy-1-butene from 1,3-butadiene oxidation effl

1997-09-29

1998-05-26

Ivy, C. Warren

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549533, 549534, 549538, C07D30110, C07D30132

Patent

active

057567794

ABSTRACT:
Disclosed are improved processes for the recovery of 3,4-epoxy-1-butene (epoxybutene) from an epoxidation effluent comprising epoxybutane, butadiene, oxygen and an inert diluent obtained by the selective epoxidation of butadiene with an oxygen-containing gas in the presence of a catalyst and an inert gas. Epoxybutene is separated from the effluent by means of an absorption process using an extractant comprising liquid butadiene and, optionally, a hydrocarbon diluent. The formation of butenediols, by the reaction of epoxybutene and water, in the recovery process is inhibited by the addition of a base, preferably an alkali metal base, to the recovery system.

REFERENCES:
patent: 4897498 (1990-01-01), Monnier et al.
patent: 4950773 (1990-08-01), Monnier et al.
patent: 5117012 (1992-05-01), Stavinoha et al.
patent: 5312931 (1994-05-01), Stavinoha

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