Preparation method of C.I. water-based paratonere 57:1

The invention discloses a preparation method of C.I. water-based paratonere 57:1. The preparation method of the invention comprises the following steps: preparing a diazo liquid and a coupling liquid, coupling by putting the prepared diazo liquid into the coupling liquid, postprocessing while adding Sr, Al and Mg and a styrene-maleic anhydride dispersant, filter-pressing, drying, mixing, standardizing and detecting so as to obtain the finished product paratonere 57:1. By the preparation method, the prepared C.I. water-based paratonere 57:1 has good alkali resistance, is stable to store, will not turn back to coarse or become viscous if placed in a waterborne acrylic acid system for a long time, and is applied freely in a waterborne system. 本发明公开了种C.I.水性颜料红57:1的制备方法。本发明的制备方法是先进行重氮液、偶合液的制备，将制备好的重氮液放入偶合液中进行偶合，然后进行后处理，后处理时加入Sr、Al和Mg，和苯乙烯马来酸酐分散剂，再经过压滤、干燥、混并标准化、检验后即可得成品颜料红57:1。本发明所述的C.I.水性颜料红57:1的制备方法，制备出来的颜料耐碱性好，贮存稳定，在水性丙烯酸体系中放置时间长不会出现反粗、变粘稠等现象，在水性体系中应用自由。