Document Type and Number:
Japanese Patent JPH0240651
Kind Code:
B2
Abstract:
In a process for the continuous preparation of adipic acid by hydrolysis of C1-C4-alkyl adipates with water at an elevated temperature in the presence of a strongly acidic ion exchanger, the improvement that the esters and excess water are fed to the middle section of a column, reaction mixture is taken off at a plurality of trays of the column below the feed point, passed over a strongly acidic ion exchanger and recycled, alkanols or alkanol/water mixtures are taken off at the top of the column and an aqueous solution of adipic acid is taken off at the bottom of the column.
Inventors:
PEETAA MAKUNUTSUSEN
FUORUKAA SHUMAHAA
UORUFUGANGU GEBERUTO
HAINRIHI RAITSU
UERUNAA PURETORIUSU
FUORUKAA SHUMAHAA
UORUFUGANGU GEBERUTO
HAINRIHI RAITSU
UERUNAA PURETORIUSU
Application Number:
JP616982A
Publication Date:
September 12, 1990
Filing Date:
January 20, 1982
Export Citation:
Assignee:
BASF AG
International Classes:
C07C55/14; B01J31/00; B01J31/10; C07B61/00; C07C27/02; C07C51/00; C07C51/09; C07C67/00
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