| 摘要 |
Disazo pyrazolone pigments are provided which have improved properties achieved by incorporating certain azomethine compounds. The pigment is prepared by reacting a primary amine terminated alkylene oxide polymer and acetoacetanilide or substituted acetoacetanilide to form an azomethine coupler, and subsequently co-reacting the azomethine coupler and a pyrazolone coupler with tetrazotized 3,3'-dichlorobenzidine or tetrazotized o-dianisidine. The pigment is useful in printing ink, plastics and paints.
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