Azo pigment, method for preparing azo pigment, dispersion including azo pigment, coloring composition, and inkjet recording ink
AssigneeFUJIFILM Corporation
InventorsKeiichi Tateishi, Shinya Hayashi, Hiroshi Yamada, Yoshiaki Nagata
Life of this patent
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Abstract
An azo pigment or a tautomer thereof represented by the following Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 6.5°, 7.1° and 21.8° in the CuKα characteristic X-ray diffraction.
Claims42
A pigment dispersion comprising:
- an azo pigment or a tautomer thereof represented by Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 6.5°, 7.1° and 21.8° in a CuKα characteristic X-ray diffraction
- wherein a volume average particle diameter of pigment particles in the pigment dispersion is 0.01 μm to 0.2 μm.
A pigment dispersion comprising:
- an azo pigment or a tautomer thereof represented by Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 6.3°, 6.4° and 22.3° in a CuKα characteristic X-ray diffraction
- wherein a volume average particle diameter of pigment particles in the pigment dispersion is 0.01 μm to 0.2 μm.
A pigment dispersion comprising:
- an azo pigment or a tautomer thereof represented by Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 5.9° and 7.0° in a CuKα characteristic X-ray diffraction
- wherein a volume average particle diameter of pigment particles in the pigment dispersion is 0.01 μm to 0.2 μm.
A pigment dispersion comprising:
- an azo pigment or a tautomer thereof represented by Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 4.8°, 7.2° and 9.7° in a CuKα characteristic X-ray diffraction
- wherein a volume average particle diameter of pigment particles in the pigment dispersion is 0.01 μm to 0.2 μm.
A pigment dispersion comprising:
- an azo pigment or a tautomer thereof represented by Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 4.9°, 8.8° and 13.1° in a CuKα characteristic X-ray diffraction
- wherein a volume average particle diameter of pigment particles in the pigment dispersion is 0.01 μm to 0.2 μm.
A pigment dispersion comprising:
- an azo pigment or a tautomer thereof represented by Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 6.6°, 9.2° and 21.5° in a CuKα characteristic X-ray diffraction
- wherein a volume average particle diameter of pigment particles in the pigment dispersion is 0.01 μm to 0.2 μm.
A pigment dispersion comprising:
- an azo pigment or a tautomer thereof represented by the following Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 4.8°, 9.2° and 13.0° in a CuKα characteristic X-ray diffraction
- wherein a volume average particle diameter of pigment particles in the pigment dispersion is 0.01 μm to 0.2 μm.
A method for preparing an azo pigment or a tautomer thereof represented by Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 6.5°, 7.1 and 21.8° in a CuKα characteristic X-ray diffraction, the method comprising:
- desolvating a solvate of an azo compound or a tautomer thereof represented by Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 6.3°, 6.4° and 22.3° in the CuKα characteristic X-ray diffraction
A method for preparing an azo pigment or a tautomer thereof represented by Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 6.3°, 6.4° and 22.3° in a CuKα characteristic X-ray diffraction, the method comprising:
- subjecting an azo compound or a tautomer thereof, which is represented by Formula (1), and has characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of any one of (i) 6.6°, 9.2° and 21.5°, (ii) 4.8°, 7.2° and 9.7°, and (iii) 5.9°, 7.0° and 8.9° in the CuKα characteristic X-ray diffraction, to solvent heating treatment
A method for preparing an azo pigment or a tautomer thereof represented by Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 4.8°, 7.2°, 9.5°, 9.7°, 10.7°, 17.4°, 19.0°, 20.1° and 26.8° in a CuKα characteristic X-ray diffraction, the method comprising:
- heating and stirring the azo pigment or the tautomer thereof represented by Formula (1) at 60° C. or more in an organic solvent
A method for preparing an azo pigment or a tautomer thereof represented by Formula (1), the method comprising:
- kneading a mixture comprising the azo pigment or the tautomer thereof represented by Formula (1), a water-soluble inorganic salt and a water-soluble organic solvent, wherein the azo pigment or the tautomer thereof has characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 4.8°, 7.2° and 9.7° in a CuKα characteristic X-ray diffraction, and a BET specific surface area by a nitrogen adsorption method is 50 m2/g or more
A method for preparing an azo pigment or a tautomer thereof represented by Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 4.9°, 8.8° and 13.1° in a CuKα characteristic X-ray diffraction, the method comprising:
- desolvating a solvate of an azo compound or a tautomer thereof represented by Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 4.8°, 9.2°, 13.0° and 24.4° in the CuKα characteristic X-ray diffraction
A method for preparing an azo pigment or a tautomer thereof represented by Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 4.8°, 9.2° and 13.0° in a CuKα characteristic X-ray diffraction, the method comprising:
- subjecting an azo compound or a tautomer thereof, which is represented by Formula (1), and has characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of any one of (i) 6.6°, 9.2° and 21.5°, (ii) 4.8°, 7.2° and 9.7°, and (iii) 5.9°, 7.0° and 8.9° in the CuKα characteristic X-ray diffraction, to solvent heating treatment
A pigment dispersion comprising:
- a solvate of an azo compound or a tautomer thereof represented by Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 6.3°, 6.4° and 22.3° in a CuKα characteristic X-ray diffraction
- wherein a volume average particle diameter of pigment particles in the pigment dispersion is 0.01 μm to 0.2 μm.
A pigment dispersion comprising:
- a solvate of an azo compound or a tautomer thereof represented by Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 4.8°, 9.2°, 13.0° and 24.4° in a CuKα characteristic X-ray diffraction
- wherein a volume average particle diameter of pigment particles in the pigment dispersion is 0.01 μm to 0.2 μm.
A pigment dispersion comprising:
- an acetone solvate of an azo compound or a tautomer thereof represented by the following Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2°) of 6.6°, 9.2° and 21.5° in a CuKα characteristic X-ray diffraction
- wherein a volume average particle diameter of pigment particles in the pigment dispersion is 0.01 μm to 0.2 μm.
Dependencies are inferred from the claim text.