| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition capable of affording a copper phthalocyanine pigment having a clear color tone, a high coloring capability and a good dispersing property without performing a pigment-forming process represented by a pulverization by making a halogenated copper phthalocyanine present in a reaction. SOLUTION: This non-substituted copper phthalocyanine composition is obtained by reacting (A) phthalic anhydride or its derivative with (B) urea or its derivative and (C) copper or a copper compound in the presence of (D) a halogenated copper phthalocyanine. Further, it is preferable to use the compound (D) having <=0.1μm mean primary particle diameter, especially 0.001-0.1μm mean primary particle diameter obtained by grinding with a mechanical means, concretely chlorinated copper phthalocyanine, in 1-40 pt.wt. component (D) based on 100 pts.wt. theoretical amount of the non-substituted copper phthalocyanine to be obtained and performing the reaction in an organic solvent.
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