公开(公告)号：US06719906B1

公开(公告)日：2004-04-13

申请号：US10111948

申请日：2002-04-26

申请人： Jacek Malisz ,  Adolf Käser ,  Rainer Kaufel ,  Holger Lautenbach ,  Elke Polley ,  Martina Hoffmann

发明人： Jacek Malisz ,  Adolf Käser ,  Rainer Kaufel ,  Holger Lautenbach ,  Elke Polley ,  Martina Hoffmann

IPC分类号： B01D6116

CPC分类号： C09B67/0096 ,  C09B67/0073

摘要： A process for the preparation of concentrated solutions or suspensions of anionic organic compounds is described, which process comprises a) acidifying an aqueous solution or dispersion of an anionic organic compound that comprises salts and/or impurities to a pH of 4.5 or less, if the pH is above that value, so that the anionic organic compound becomes insoluble in water and precipitates out in the form of the free acid, b) bringing the suspension obtained from the previous step to a salt content below 2% by weight, based on the total weight of retentate, by means of ultra-filtration with a ceramic membrane or an acid-resistant organic membrane having a pore size of from 1 to 20 nm, and c) optionally washing out of the salts with water at a pH of less than 4.5, d) optionally carrying out acid-free washing with water thereafter, and then e) concentrating so that the content of anionic organic compound is from 5 to 50 % by weight, and f) optionally bringing the anionic organic compound into solution by adding a suitable base.

摘要翻译： 描述了用于制备阴离子有机化合物的浓缩溶液或悬浮液的方法，该方法包括a）如果pH为4.5或更低，则将包含盐和/或杂质的阴离子有机化合物的水溶液或分散体酸化至pH 4.5或更低 使得阴离子有机化合物变得不溶于水并以游离酸的形式沉淀出来，b）使得从前一步获得的悬浮液的盐含量低于2重量％，基于总量 通过用陶瓷膜或孔径为1至20nm的耐酸有机膜进行超滤，并且c）任选地在pH小于4.5的情况下用水洗涤所述盐， d）任选地用水进行无酸洗涤，然后进行浓缩，使得阴离子有机化合物的含量为5至50重量％，和f）任选将阴离子有机化合物引入s 通过添加合适的碱来说明。

公开(公告)号：US06860906B2

公开(公告)日：2005-03-01

申请号：US10296108

申请日：2001-05-21

申请人： Jacek Malisz ,  Adolf Käser ,  Rainer Kaufel ,  Holger Lautenbach ,  Elke Polley ,  Martina Hoffmann

发明人： Jacek Malisz ,  Adolf Käser ,  Rainer Kaufel ,  Holger Lautenbach ,  Elke Polley ,  Martina Hoffmann

IPC分类号： C09B29/045 ,  C09B29/52 ,  C09B57/00 ,  C09B67/00 ,  C09B67/26 ,  C09B67/44 ,  C09B67/54 ,  D21H21/30 ,  B01D61/16 ,  C09B67/46 ,  D21H17/03

CPC分类号： C09B67/0096 ,  Y10S8/919

摘要： Described is a process for preparing concentrated solutions or suspensions of anionic organic compounds which comprises a) acidifying an aqueous solution or suspension of an anionic organic compound containing salts and/or impurities to a pH of 4.5 or less, if the pH is above this value, so that b) the anionic organic compound is water-insoluble and precipitates in the form of the free acid, c) bringing the suspension to a salt content below 2% by weight, based on the total weight of the retentate, by means of ultrafiltration with a membrane having pore diameters of from 0.001 to 0.02 μm, and d) optionally washing out the salts with water having a pH below 4,5, e) optionally carrying out acid-free washing with water thereafter, and then f) concentrating, so that the amount of anionic organic compound is 5-50% by weight, and g) if desired, bringing the anionic organic compound into solution by adding an appropriate base.

摘要翻译： 描述了一种制备阴离子有机化合物的浓缩溶液或悬浮液的方法，其包括：a）如果pH高于该值，则酸化含有盐和/或杂质的阴离子有机化合物的水溶液或悬浮液至pH 4.5或更低 ，使得b）阴离子有机化合物是水不溶性的并以游离酸的形式沉淀，c）使悬浮液的含盐量基于渗余物的总重量低于2重量％，借助于 用孔直径为0.001-0.02μm的膜进行超滤，和d）任选地用pH低于4.5的水洗除盐，e）此后可任选地用水进行无酸洗涤，然后f）浓缩 ，阴离子有机化合物的量为5-50重量％，g）如果需要，通过加入适当的碱使阴离子有机化合物溶解。