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公开(公告)号:US6120561A
公开(公告)日:2000-09-19
申请号:US842781
申请日:1997-04-17
申请人: Peter Wild , Volker Paulat , Wolfgang Frank , Shaun Murphree
发明人: Peter Wild , Volker Paulat , Wolfgang Frank , Shaun Murphree
IPC分类号: C09B33/056 , C09B33/28 , C09B41/00 , C09B67/44 , C09B67/54 , D06P1/39 , D06P3/28 , D06P3/68 , D21H21/28 , C09B67/26
CPC分类号: C09B33/056 , C09B33/28 , C09B67/0096 , D21H21/28 , Y10S8/919
摘要: Process for the preparation of low-salt liquid dyestuff preparations, characterized in that they are obtained by:a) diazotization of an aromatic amine,b) 2-fold coupling of the diazo component obtained according to a) to I-acid-urea, in the presence of an inorganic base and in the absence of an organic base,c) desalination and, if appropriate, concentration by means of a pressure permeation of the reaction mixture obtained according to b), so that an inorganic salt content of less than 1% by weight is achieved.
摘要翻译: 制备低盐液体染料制剂的方法,其特征在于:a)芳族胺的重氮化,b)根据a)得到的重氮组分与I-酸 - 脲的2倍偶联, 在无机碱的存在下和在不存在有机碱的情况下,c)脱盐,并且如果合适的话,通过根据b)获得的反应混合物的压力渗透浓缩,使得无机盐含量小于 实现1重量%。