Patent ID: 7319165
Filing Date: 2008-01-15
Classification: C07C

Abstract:
1. A stabilized, homogeneous and transportable aqueous aminopolycarboxylate solution composition and containing water as a solvent and 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 for stability of the aminocarboxylate solution composition, wherein the aspartic acid skeleton of the aminopolycarboxylate is represented by the following general formula (2) within the compound of general formula (1): wherein X may be the same or different and represents a hydrogen atom, an alkali metal atom, or an ammonium group, wherein a polymer content is not more than 1 mass % based on the whole aqueous solution.