Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Reexamination Certificate
2003-06-11
2008-01-15
Puttlitz, Karl (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C562S553000, C562S590000
Reexamination Certificate
active
07319165
ABSTRACT:
The present invention is to provide a stabilized aqueous aminopolycarboxylate solution composition and a method of stabilizing the aminopolycarboxylate through preventing the same from caking.An aqueous aminopolycarboxylate solution composition containing an aminopolycarboxylate represented by the following general formula (1):in the formula, X may be the same or different and represents a hydrogen atom, an alkali metal atom, or an ammonium group, which has a D-form/L-form molar ratio of an aspartic acid skeleton of the aminopolycarboxylate of 1/0 to 0.7/0.3 or 0.3/0.7 to 0/1, has a solid concentration of 25 to 60 mass %, and has a pH value of not more than 11.
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Kitajima Mitsuhiro
Sumida Yasutaka
Connolly Bove Lodge and Hutz
Nippon Shokubai Co. , Ltd.
Puttlitz Karl
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