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公开(公告)号:US06743901B1
公开(公告)日:2004-06-01
申请号:US10410397
申请日:2003-04-10
申请人: Michael Schmitt , Roland Merger , Rainer Tresch
发明人: Michael Schmitt , Roland Merger , Rainer Tresch
IPC分类号: C09B3304
CPC分类号: C09B67/0076 , C09B41/001 , C09B44/06 , C09B69/065
摘要: A process for preparing liquid formulations of dyes of the general formula I where the variables are as defined in the specification by diazotizing an amine of the formula II and then coupling the diazonium salt onto a compound of the formula III and also optionally adding solubilizing additives, which comprises effecting said diazotizing at a pH set to an acidic value using pure methanesulfonic acid or at least 20 mol % mixtures of methanesulfonic acid in monobasic acids.
摘要翻译: 制备通式I的染料的液体制剂的方法,其中变量如本说明书中所定义,通过将式II的胺重氮化,然后将重氮盐偶联到式III的化合物上,还任选地加入增溶添加剂,其包括实现 在使用纯甲磺酸或甲磺酸在一元酸中的至少20摩尔%混合物的pH设定为酸值时进行重氮化。