申请人:CIBA-GEIGY AG
公开号:EP0529849A1
公开(公告)日:1993-03-03
A process for the production of a diarylide pigment comprising a) coupling a tetrazo component with substantially the stoichiometric proportion of one or more coupling components; b) in the pigment reaction mixture so obtained, coupling a tetrazo component with substantially the stoichiometric proportion required of one or more coupling components, provided that the total number of coupling components used in steps a) and b) is at least three; and c) subjecting the pigment so obtained to an after-treatment.
一种二芳基化合物颜料的生产工艺,包括 a) 将四偶氮组分与一种或多种偶联组分基本上按化学计量比例进行偶联;b) 在得到的颜料反应混合物中,将四偶氮组分与一种或多种偶联组分基本上按化学计量比例进行偶联,条件是在步骤 a) 和 b) 中使用的偶联组分总数至少为三种;以及 c) 将得到的颜料进行后处理。