Process for the production of gamma-butyrolactone

Details Process for the production of gamma-butyrolactone Process for the production of gamma-butyrolactone

1987-07-31

1988-08-30

Bascomb, Wilbur

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

203 60, 203 74, 203 75, 203 81, 203 82, 203 91, B01D 334, C07D30702

Patent

active

047678690

ABSTRACT:
A process is described for the production of substantially pure gamma-butyrolactone from a feed mixture containing a major amount of gamma-butyrolactone and a minor amount of diethyl succinate which comprises fractionally distilling the mixture in a fractionation zone in the presence of added diethyl maleate and recovering from the fractionation zone an overhead vaporous product comprising gamma-butyrolactone which is substantially free from diethyl succinate and a liquid bottom product comprising diethyl maleate and diethyl succinate in admixture one with another. This procedure can be used to separate a gamma-butyrolactone rich fraction obtained by distillation in one or more stages of a crude reaction product obtained by hydrogenation of a C.sub.4 dicarboxylic acid ester feedstock that contains a major molar amount of diethyl maleate and a minor molar amount of diethyl succinate, using a diethyl maleate feedstock from an esterification plant to provide both diethyl maleate for use in the fractionation zone and also diethyl maleate for use as feedstock for the hydrogenation process.

REFERENCES:
patent: 2040944 (1936-05-01), Lazier
patent: 2079414 (1937-05-01), Lazier
patent: 4032583 (1977-06-01), Arganbright et al.
patent: 4584419 (1986-04-01), Sharif et al.

Affiliated with

Also associated with

Rating

Process for the production of gamma-butyrolactone does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the production of gamma-butyrolactone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of gamma-butyrolactone will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2089424