Process for the continuous preparation of glyoxylic acid

Details Process for the continuous preparation of glyoxylic acid Process for the continuous preparation of glyoxylic acid

1990-05-25

1991-11-26

Gray, Bruce

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

Organic compounds

Carboxylic acids and salts thereof

C07C 59147

Patent

active

050684175

ABSTRACT:
A process for continuous preparation of a concentrated aqueous solution of glyoxylic acid by hydrolysis of glyoxylic acid ester hemiacetals, wherein glyoxylic acid ester hemiacetals are treated with steam in countercurrent in a reactor cascade.

REFERENCES:
patent: 2081355 (1937-05-01), Heisel
patent: 2842576 (1958-07-01), Habeshaw et al.
patent: 3014963 (1961-12-01), Shunk et al.
patent: 3032491 (1962-05-01), Barton et al.
patent: 3705922 (1972-12-01), Callighan et al.
patent: 4026929 (1977-05-01), Bauer et al.
patent: 4340748 (1982-07-01), Baltes et al.
patent: 4867849 (1989-07-01), Cova et al.

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