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Blue pigment composition containing c.i. pigment blue 16, production method thereof, and green coloring composition

A technology for coloring compositions and blue pigments, applied in the direction of organic dyes, etc., can solve problems such as difficult to obtain spectral spectra

Active Publication Date: 2021-08-20
SANYO COLOR WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the case of forming a green pixel of a color filter, green pigments such as C.I. Pigment Green 7 and C.I. Pigment Green 36 are used, but it is difficult to obtain a desired spectral spectrum if only these green pigments are used. The case of adjusting the spectroscopic spectrum (Patent Document 1)

Method used

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  • Blue pigment composition containing c.i. pigment blue 16, production method thereof, and green coloring composition
  • Blue pigment composition containing c.i. pigment blue 16, production method thereof, and green coloring composition
  • Blue pigment composition containing c.i. pigment blue 16, production method thereof, and green coloring composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (Kneading process)

[0052] As C.I. Pigment Blue 16, Heliogen (registered trademark) blue D7490 (hereinafter abbreviated as D7490) manufactured by BASF Corporation was used. The particle shape of the pigment is strip shape, the maximum width of the particle is 91 nm, and the minimum width is 44 nm. 300 parts by weight of D7490 and 1000 parts by weight of anhydrous sodium sulfate (manufactured by Mitajiri Chemical Industry Co., Ltd.; neutral anhydrous Glauber's salt; the average particle diameter is 20 μm), 340 parts by weight of polyethylene glycol (manufactured by Toho Chemical Co., Ltd.; PEG-200; the average molecular weight is 200), and the temperature in the kneader reaches 80 to 90 ° C. The mixture was kneaded for 2 hours while adjusting the temperature.

[0053] (micronization process)

[0054] 18 parts by weight of the pigment derivative (a), 2500 parts by weight of anhydrous sodium sulfate, and 680 parts by weight of polyethylene glycol were added to the knea...

Embodiment 2

[0063] Obtained in the same manner as in Example 1, except that 9 parts by weight of the pigment derivative (a) and 9 parts by weight of the pigment derivative (b) were used instead of 18 parts by weight of the pigment derivative (a) in the miniaturization step. Micronized C.I. Pigment Blue 16 (Blue Pigment 2). Thereafter, the blue pigment 2 was treated in the same manner as in Example 1 to obtain the blue pigment dispersion of Example 2.

Embodiment 3

[0065] Kneading was performed without adding a pigment derivative in the miniaturization process, and a miniaturized C.I. Pigment Blue 16 (blue pigment 3) was obtained after a post-treatment process. In addition, in the dispersion step, 31.58 parts by weight of the blue pigment 2 was used instead of the 33.48 parts by weight of the blue pigment 1, and 1.9 parts by weight of the pigment derivative (a) was added. Except for this, the blue pigment dispersion of Example 3 was obtained by the method similar to Example 1.

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Abstract

The present invention provides a blue pigment composition containing C.I. Pigment Blue 16, a method for producing the same, and a green coloring composition. A blue pigment composition capable of producing a green coloring composition with high brightness in combination with a yellow pigment, and containing C.I. Pigment Blue 16 having a novel crystal structure. Furthermore, the green coloring composition with high brightness contains this C.I. Pigment Blue 16 and a yellow pigment composition. The present invention uses C.I. Pigment Blue 16, which has a diffraction intensity (A) of Bragg angle (2θ) = 7.3° for CuKα characteristic X-rays and a peak of CuKα characteristic X-rays for Bragg angle (2θ) = 6.9±0.2° The diffraction intensities (B) have a relationship of 0.05≦A / B≦0.35; and the maximum width of the particles is 20 nm or more and 80 nm or less.

Description

technical field [0001] The present invention relates to C.I. Pigment Blue 16 having a specific crystal structure and a method for producing the same. Furthermore, the present invention relates to a green coloring composition having the C.I. Pigment Blue 16 and a yellow pigment dispersion. Background technique [0002] Phthalocyanine (Phthalocyanine) is a cyclic compound having a structure in which four phthalimides are cross-linked through nitrogen atoms, and has a structure similar to porphyrin. The central part is complexed with various elements represented by transition metals to form a stable complex. There are π-electron conjugated systems distributed throughout the molecule, so it has a planar structure and exhibits a strong color. Especially the complexes mostly appear blue to green. Phthalocyanine has high color matching and light resistance, so it is used as a pigment. [0003] Phthalocyanine pigments are used in a wide range of fields, such as optical discs, so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/50C09B67/22
CPCC09B67/0033C09B67/006
Inventor 坂本智司齐藤智昭
Owner SANYO COLOR WORKS