利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN109415663A 制备含有MGDA和GLDA的颗粒的方法、颗粒及其用途 无效 - 驳回

制备含有MGDA和GLDA的颗粒的方法、颗粒及其用途
摘要：
本发明涉及一种制备至少两种氨基多羧酸的盐(A)的颗粒的方法，所述方法包括以下步骤：(a)提供如下物质的水溶液：(A1)甲基甘氨酸二乙酸(MGDA)的L-和D-对映体的混合物的至少一种碱金属盐，所述混合物主要含有相应L-异构体，对映体过量(ee)为10-95％，(A2)谷氨酸二乙酸(GLDA)的L-和D-对映体或对映体纯L-GLDA的至少一种碱金属盐，其中(A1)与(A2)的重量比为1:9-9:1，(b)将所述溶液以至少125℃的气体入口温度喷雾造粒。此外，本发明涉及颗粒及其用途。
摘要（英）：

Process for manufacturing granules of salts of at least two aminopolycarboxylic acids (A), comprising the steps of (a) providing an aqueous solution of (A1) at least one alkali metal salt of a mixtureof L- and D- enantiomers of methyl glycine diacetic acid (MGDA), the mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 10 to 95 %, (A2) atleast one alkali metal salt of L- and D-enantiomers of glutamic acid diacetic acid (GLDA) or of enantiomerically pure L-GLDA, the weight ratio of (A1) and (A2) being in the range of from 1:9 to 9:1,(b) spray granulating the solution with a gas inlet temperature of at least 125 degrees centigrade. Additionally, the present invention relates to granules and to their use.

0/0