Acid/salt separation

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United States of America Patent

PATENT NO 9061986
APP PUB NO 20140357877A1
SERIAL NO

14238633

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Abstract

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A method for preparing a carboxylic acid, includes the steps of: providing magnesium carboxylate, wherein the carboxylic acid corresponding with the carboxylate is selected from the group made of 2,5-furandicarboxylic acid, fumaric acid, adipic acid, itaconic acid, citric acid, glutaric acid, maleic acid, malonic acid, oxalic acid and fatty acids having more than 10 carbon atoms; acidifying the magnesium carboxylate with hydrogen chloride (HCl), thereby obtaining a solution including carboxylic acid and magnesium chloride (MgCl2); optionally a concentration step, wherein the solution including carboxylic acid and MgCl2 is concentrated; and precipitating the carboxylic acid from the solution including the carboxylic acid and MgCl2, thereby obtaining a carboxylic acid precipitate and a MgCl2 solution.

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Patent Owner(s)

Patent OwnerAddress
PURAC BIOCHEM B V4206 AC GORINCHEM

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cerdà, Baró Agustín Cerdanyola Valles, ES 6 22
De, Haan André Banier Best, NL 30 63
Jansen, Peter Paul Oss, NL 15 42
Van, Breugel Jan Woudrichem, NL 27 97
Van, Der Weide Paulus Loduvicus Johannes Breda, NL 8 30
Vidal, Lancis José María Vilassar de Mar, ES 3 20

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