Aminopolycarboxylic acid aqueous solution composition and stabilization method of aminopolycarboxylic acid
申请人:Nippon Shokubai Co., Ltd.
公开号:EP1371630A2
公开(公告)日:2003-12-17
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.
本发明旨在提供一种稳定的氨基多羧酸盐水溶液组合物和一种通过防止氨基多羧酸盐结块来稳定氨基多羧酸盐的方法。
氨基多羧酸盐水溶液组合物含有由以下通式(1)表示的氨基多羧酸盐:
式中,X 可以相同或不同,代表氢原子、碱金属原子或铵基团,该组合物的天冬氨酸骨架的 D-形式/L-形式摩尔比为 1/0 至 0.7/0.3 或 0.3/0.7 至 0/1,固体浓度为 25 至 60 质量%,pH 值不大于 11。