| 摘要 |
PURPOSE: Provided are a near-infrared reflecting composite pigments comprising a near-infrared reflecting and/or near-infrared transmitting colorant and a white pigment coated with the near-infrared non-absorbing colorant usable as a coloring agent in a paint, a printing ink or the like. CONSTITUTION: The pigments include azo, anthraquinone, phthalocyanine, perinone/perylene, indigo/thioindigo, dioxazine, quinacridone, isoindolinone, isoindoline, diketopyrrolopyrrole, azomethine, and azomethine-azo organic pigments. Preferred black colorants can include azo, azomethine, and perylene organic black colorants. The preferred pigment is represented by the formula (I) (wherein R represents a group selected from the group consisting of lower alkyl groups having 1 to 3 carbon atoms and lower alkoxy groups having 1 to 3 carbon atoms, n stands for an integer of from 1 to 5, and, when n is at least 2, Rs may be the same or different). The black pigment can be obtained by coupling a diazonium prepared by diazotizing a 3-(aminophenylimino)-1-oxo-4,5,6,7-tetrachloroisoindoline represented by a formula (II) with a 2-hydroxy-11H-benzo£a|-carbazole-3-carboxyarylamide represented by the below-described formula (III) as a coupling component.
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