In the experiments of color adjustment,based on an overall consideration about the color requirement and production cost,it was regarded that the optimum formula could be obtained with phthalocyanine blue 0.

The effects of various dispersing agents on the dispersibility of phthalocyanine blue in sodium sulfocyanate solution were studied in this paper.

The phthalocyanine blue (CuPc) particles were recrystallized by the anti-solvent method,and at the same time were modified by different surface active agents,respectively.