Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1975-12-29
1977-05-31
Killos, Paul J.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260530R, C07C 5930
Patent
active
040269299
ABSTRACT:
Glyoxylic acid is selectively extracted from its aqueous mixture with glyoxal by means of aliphatic or cycloaliphatic alcohol containing about 4 to 8 carbon atoms, a ketone containing about 4 to 8 carbon atoms, and an ester of an aliphatic carboxylic acid and aliphatic alcohol each containing up to about 6 carbon atoms, the esters containing a total of about 3 to 8 carbon atoms, allowing the mixture to stratify and separating the solvent layer enriched in glyoxylic acid.
REFERENCES:
patent: 3644508 (1972-02-01), Callighan et al.
Bauer Kurt
Krempel Alfred
Molleken Reiner
Haarmann & Reimer GmbH
Killos Paul J.
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