Preparation and separation of a di-carboxylic acid-containing mixture
AssigneeArcher Daniels Midland Company
InventorsGary M. Diamond, Eric L. Dias, Raymond Archer, Vincent J. Murphy, Thomas R. Boussie
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Abstract
Processes for separating a di-carboxylic acid or salt thereof from a mixture containing the di-carboxylic acid or salt thereof and one or more other components are provided. Also separation media useful for these separation processes is provided. In particular, processes for preparing an aldaric acid are described, such as glucaric acid from glucose, which includes separating the aldaric acid from the reaction product. Also, various glucaric acid products are described.
Claims21
A mixture comprising a glucaric acid product and a separation media comprising an anion exchange chromatography resin in contact with the glucaric acid product, wherein the glucaric acid product comprises:
- from about 20 wt. % to about 65 wt. % glucaric acid or a salt thereof,
- from about 25 wt. % to about 70 wt. % gluconic acid or a salt thereof,
- less than about 10 wt. % of one or more ketogluconic acids or salts thereof,
- less than about 5 wt. % of one or more C2-C5 di-acids or salts thereof, and
- less than about 5 wt. % glucose, wherein each weight percent is based on the dissolved solids content of the glucaric acid product;
- and
- wherein the anion exchange chromatography resin is in di-carboxylate form.
A mixture comprising a glucaric acid product and a separation media comprising an anion exchange chromatography resin in contact with the glucaric acid product, wherein the glucaric acid product comprises:
- from about 20 wt. % to about 65 wt. % glucaric acid or a salt thereof,
- from about 25 wt. % to about 70 wt. % gluconic acid or a salt thereof,
- from about 1 wt. % to about 20 wt. % guluronic acid or a salt thereof,
- less than about 10 wt. % of one or more ketogluconic acids or salts thereof,
- less than about 5 wt. % of one or more C2-C5 di-acids or salts thereof, and
- less than about 5 wt. % glucose, wherein each weight percent is based on the dissolved solids content of the glucaric acid product;
- and
- wherein the anion exchange chromatography resin comprises a weakly basic anion exchange chromatography resin.
Dependencies are inferred from the claim text.