Chelating agent and detergent comprising the same
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United States of America Patent
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Apr 24, 2001
Grant Date -
N/A
app pub date -
Jul 13, 1999
filing date -
Dec 22, 1995
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Abstract
Disclosed is a biodegradable chelating agent which comprises a compound of the following formula [1] and at least one compound selected from the group consisting of aspartic acid, maleic acid, acrylic acid, malic acid, glycine, glycolic acid, iminodiacetic acid, nitrilotriacetic acid, .alpha.-alanine, .alpha.-alanine, iminodipropionic acid, fumaric acid, a synthetic starting amino acid and a synthetic intermediate amino acid and a salt thereof in an amount of 8% by weight or less based on the compound of the formula [1]: ##STR1## wherein R.sup.1, R.sup.2, X and Y are defined.
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