Process for the preparation of lactic acid and glyceric acid

Details Process for the preparation of lactic acid and glyceric acid Process for the preparation of lactic acid and glyceric acid

2005-09-22

2008-12-02

Zucker, Paul A (Department: 1621)

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

Organic compounds

Carboxylic acids and salts thereof

Reexamination Certificate

active

07459584

ABSTRACT:
Hexose and pentose monosaccharides are degraded to lactic acid and glyceric acid in an aqueous solution in the presence of an excess of a strongly anionic exchange resin, such as AMBERLITE IRN78 and AMBERLITE IRA400. The glyceric acid and lactic acid can be separated from the aqueous solution. Lactic acid and glyceric acid are staple articles of commerce.

REFERENCES:
patent: 2024565 (1935-12-01), Braun
patent: 2382889 (1945-08-01), Lock
patent: 2003/0155298 (2003-08-01), Cockrem
Buhler et al, Journal of the American Chemical Society, Epimerization and Fragmentation of Glucose by Quaternary Ammonium Base Type Anion Exchange Resins, 1955, 77, pp. 481-482.
Bruijn, J.M., et al., Int. Sugar 101-104 (1994).
Ellis, A.V., et al., J. Org. Chem. 67, 8469-8474 (2002).
Bruijn, J.M., et al., Recl. Trav. Chim. Pays-Bas 106, 35-43 (1987).
Bruijn, J.M., et al., Sugar Technology Review 13 21-52 (1986).

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