Hydroxycarboxylic Acids and Salts
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United States of America Patent
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Issued Date -
Oct 8, 2009
app pub date -
Apr 10, 2009
filing date -
Aug 7, 2006
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Abandoned
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Abstract
Compositions which inhibit corrosion and alter the physical properties of concrete (admixtures) are prepared from salt mixtures of hydroxycarboxylic acids, carboxylic acids, and nitric acid. The salt mixtures are prepared by neutralizing acid product mixtures from the oxidation of polyols using nitric acid and oxygen as the oxidizing agents. Nitric acid is removed from the hydroxycarboxylic acids by evaporation and diffusion dialysis.
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