Solutions of trialkali metal salts of MGDA with an excess of L-enantiomer, their manufacture and use
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United States of America Patent
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Jan 23, 2018
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Oct 7, 2015
filing date -
Oct 17, 2014
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Abstract
Aqueous solution containing in the range of from 60.5 to 75% by weight of a mixture of trialkalimetal salts of the L-and D-enantiomers of methyl glycine diacetic acid (MGDA), said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 3 to 97%, wherein said trialkali metal salts have the general formula (I) [CH3—CH(COO)—N(CH2—COO)2]K3−xNax (I) wherein x is in the range of from zero to 2.9.
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