Recovery of aqueous glyoxylic acid solutions

Details Recovery of aqueous glyoxylic acid solutions Recovery of aqueous glyoxylic acid solutions

1984-10-18

1990-02-20

Garner, Vivian

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

Organic compounds

Carboxylic acids and salts thereof

562513, 562531, 562580, 562593, 562608, 562609, 568492, C07C 5148, C07C 59153

Patent

active

049028286

ABSTRACT:
Aqueous glyoxylic acid solutions, essentially free of other acids, are recovered from aqueous solutions which still contain other acids, by a method in which the aqueous solution is mixed with an organic nitrogen compound at as high as 50.degree. C., the phases are separated, and the glyoxylic acid is extracted from the organic phase with water, at a higher temperature.

REFERENCES:
patent: 3281460 (1966-04-01), Gandon et al.
patent: 3860656 (1975-11-01), McCain Jr. et al.
patent: 3872166 (1975-03-01), Spaezig et al.
patent: 4026929 (1977-05-01), Bauer et al.

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