公开(公告)号：US08628684B2

公开(公告)日：2014-01-14

申请号：US13318513

申请日：2010-05-19

申请人： Frank Mrzena ,  Hans-Juergen Kinder ,  Michael Schoenherr ,  Gerhard Cox ,  Thomas Schmidt ,  Volker Huett

发明人： Frank Mrzena ,  Hans-Juergen Kinder ,  Michael Schoenherr ,  Gerhard Cox ,  Thomas Schmidt ,  Volker Huett

IPC分类号： C09K3/00 ,  C07C61/08

CPC分类号： C07C229/24 ,  C07B2200/13 ,  C07C227/42 ,  C07C229/16

摘要： A process is proposed for the preparation of a powder comprising one or more derivatives of glycine-N,N-diacetic acid and/or one or more derivatives of glutamine-N,N-diacetic acid with a degree of crystallinity of ≧30%,starting from an aqueous solution comprising the one or more derivatives of glycine-N,N-diacetic acid and/or the one or more derivatives of glutamine-N,N-diacetic acid in a concentration range from 20 to 60% by weight, based on the total weight of the aqueous solution, where the aqueous solution is concentrated in a first process step in an evaporator with rotating internals, which are arranged at a distance relative to the inside wall of the evaporator of ≦1% of the diameter of the evaporator, to give a crystal slurry with a solids concentration in the range from 60 to 85% by weight, based on the total weight of the crystal slurry, and where in a second process step the crystal slurry is left to ripen in a paste bunker and then in a thin-film contact dryer, and where the residence time in the paste bunker and in the thin-film contact dryer is in total ≧15 minutes.

摘要翻译： 提出了制备包含一种或多种甘氨酸-N，N-二乙酸衍生物和/或谷氨酰胺-N，N-二乙酸衍生物的结晶度> 30％的粉末的方法， 从包含甘氨酸-N，N-二乙酸的一种或多种衍生物和/或浓度为20至60重量％的谷氨酰胺-N，N-二乙酸的一种或多种衍生物的水溶液开始， 基于所述水溶液的总重量，其中所述水溶液在具有旋转内部件的蒸发器中的第一工艺步骤中被浓缩，所述蒸发器相对于所述蒸发器的内壁相对于所述蒸发器的所述内壁的一定距离设置， 蒸发器，得到基于晶体浆料的总重量的固体浓度为60至85重量％的晶体浆料，并且其中在第二工艺步骤中，使晶体浆料以糊状物成熟 地堡，然后在薄膜接触式烘干机中，以及哪里 在糊状掩模和薄膜接触式干燥器中的停留时间总共> = 15分钟。

公开(公告)号：US20120046491A1

公开(公告)日：2012-02-23

申请号：US13318513

申请日：2010-05-19

申请人： Frank Mrzena ,  Hans-Juergen Kinder ,  Michael Schoenherr ,  Gerhard Cox ,  Thomas Schmidt ,  Volker Huett

发明人： Frank Mrzena ,  Hans-Juergen Kinder ,  Michael Schoenherr ,  Gerhard Cox ,  Thomas Schmidt ,  Volker Huett

IPC分类号： C07C229/24

CPC分类号： C07C229/24 ,  C07B2200/13 ,  C07C227/42 ,  C07C229/16

摘要： A process is proposed for the preparation of a powder comprising one or more derivatives of glycine-N,N-diacetic acid and/or one or more derivatives of glutamine-N,N-diacetic acid with a degree of crystallinity of ≧30%,starting from an aqueous solution comprising the one or more derivatives of glycine-N,N-diacetic acid and/or the one or more derivatives of glutamine-N,N-diacetic acid in a concentration range from 20 to 60% by weight, based on the total weight of the aqueous solution, where the aqueous solution is concentrated in a first process step in an evaporator with rotating internals, which are arranged at a distance relative to the inside wall of the evaporator of ≦1% of the diameter of the evaporator, to give a crystal slurry with a solids concentration in the range from 60 to 85% by weight, based on the total weight of the crystal slurry, and where in a second process step the crystal slurry is left to ripen in a paste bunker and then in a thin-film contact dryer, and where the residence time in the paste bunker and in the thin-film contact dryer is in total ≧15 minutes.

摘要翻译： 提出了制备包含一种或多种甘氨酸-N，N-二乙酸衍生物和/或一种或多种结晶度为≥30％的谷氨酰胺-N，N-二乙酸衍生物的粉末的方法， 从包含甘氨酸-N，N-二乙酸的一种或多种衍生物和/或浓度范围为20至60重量％的谷氨酰胺-N，N-二乙酸的一种或多种衍生物的水溶液开始，基于 在水溶液的总重量中，其中水溶液在具有旋转内部件的蒸发器中的第一工艺步骤中被浓缩，所述蒸发器相对于蒸发器的内壁设置一定距离，其直径为 蒸发器，得到基于晶体浆料的总重量的固体浓度为60至85重量％的晶体浆料，并且其中在第二工艺步骤中，使晶体浆料以糊状物成熟 然后在薄膜接触式干燥器中，并且w 这里在糊状物掩体和薄膜接触式干燥器中的停留时间总共≥15分钟。