초록

Substantially crystalline organic pigments characterized by small particle size and narrow particle size distribution.

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1. A substantially crystalline organic pigment selected from the group consisting of quinacridone, anthraquinone, perylene, indigo, quinophthalone, indanthrone, isoindolinone, isoindoline, dioxazine, azo, phthalocyanine and diketopyrrolopyrrole pigments consisting of particles of average size from 0

1. A substantially crystalline organic pigment selected from the group consisting of quinacridone, anthraquinone, perylene, indigo, quinophthalone, indanthrone, isoindolinone, isoindoline, dioxazine, azo, phthalocyanine and diketopyrrolopyrrole pigments consisting of particles of average size from 0.01 μm to 0.12 μm, wherein the total quantity of particles of size greater than 0.12 μm and smaller than 0.01 μm is from 0 to 8% by weight, based on the weight of particles of size from 0.01 μm to 0.1 μm, and full width at half maximum of a CuKα radiation X-ray powder diagram is from 0 to 0.68 °2θ.2. A pigment according to claim 1, which is a quinacridone pigment.3. A pigment according to claim 1, which is an anthraquinone pigment.4. A pigment according to claim 1, which is a perylene pigment.5. A pigment according to claim 1, which is an indigo pigment.6. A pigment according to claim 1, which is a quinophthalone pigment.7. A pigment according to claim 1, which is an indanthrone pigment.8. A pigment according to claim 1, which is an isoindolinone pigment.9. A pigment according to claim 1, which is an isoindoline pigment.10. A pigment according to claim 1, which is a dioxazine pigment.11. A pigment according to claim 1, which is an azo pigment.12. A pigment according to claim 1, which is a 1,4-diketopyrrolo[3,4c]-pyrrole pigment.13. A pigment according to claim 12, which is a 1,4-diketopyrrolo[3,4c]-pyrrole pigment of the formula 14. An organic pigment according to claim 13, wherein the particles are of average size from 0.02 μm to 0.10 μm, the total quantity of particles of size greater than 0.12 μm and smaller than 0.01 μm is from 0 to 4% by weight, based on the weight of particles of size from 0.01 μm to 0.1 μm, and the full width at half maximum of an X-ray powder diagram is from 0.1 to 0.6 °2θ.15. An organic pigment according to claim 13, wherein the particles are of average size from 0.03 μm to 0.06 μm, the total quantity of particles of size greater than 0.12 μm and smaller than 0.01 μm is from 0 to 2% by weight, based on the weight of particles of size from 0.01 μm to 0.1 μm, and the full width at half maximum of an X-ray powder diagram is from 0.2 to 0.5 °2θ.16. An organic pigment according to claim 1, wherein the particles are of average size from 0.02 μm to 0.10 μm, the total quantity of particles of size greater than 0.12 μm and smaller than 0.01 μm is from 0 to 4% by weight, based on the weight of particles of size from 0.01 μm to 0.1 μm, and the full width at half maximum of an X-ray powder diagram is from 0.1 to 0.6 °2θ.17. A pigment according to claim 16, which is a quinacridone pigment.18. A pigment according to claim 16, which is an anthraquinone pigment.19. A pigment according to claim 16, which is a perylene pigment.20. A pigment according to claim 16, which is an indigo pigment.21. A pigment according to claim 16, which is a quinophthalone pigment.22. A pigment according to claim 16, which is an indanthrone pigment.23. A pigment according to claim 16, which is an isoindolinone pigment.24. A pigment according to claim 16, which is an isoindoline pigment.25. A pigment according to claim 16, which is a dioxazine pigment.26. A pigment according to claim 16, which is an azo pigment.27. A pigment according to claim 16, which is a 1,4-diketopyrrolo[3,4c]-pyrrole pigment.28. An organic pigment according to claim 1, wherein the particles are of average size from 0.03 μm to 0.06 μm, the total quantity of particles of size greater than 0.12 μm and smaller than 0.01 μm is from 0 to 2% by weight, based on the weight of particles of size from 0.01 μm to 0.1 μm, and the full width at half maximum of an X-ray powder diagram is from 0.2 to 0.5 °2θ.29. A pigment according to claim 28, which is a quinacridone pigment.30. A pigment according to claim 28, which is an anthraquinone pigment.31. A pigment according to claim 28, which is a perylene pigment.32. A pigment according to claim 28, which is an indigo pigment.33. A pigment according to claim 28, which is a quinophthalone pigment.34. A pigment according to claim 28, which is an indanthrone pigment.35. A pigment according to claim 28, which is an isoindolinone pigment.36. A pigment according to claim 28, which is an isoindoline pigment.37. A pigment according to claim 28, which is a dioxazine pigment.38. A pigment according to claim 28, which is an azo pigment.39. A pigment according to claim 28, which is a 1,4-diketopyrrolo[3,4c]-pyrrole pigment.