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Phthalocyanine pigment composition, coloring composition and color filter

A technology for coloring compositions and phthalocyanine pigments, applied in the field of color filters, can solve the problems of insufficient heat resistance and light resistance, poor dispersibility, foreign matter generation, etc., and achieve the effect of excellent solvent resistance

Active Publication Date: 2020-05-19
TOYO INK SC HOLD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, pigment compositions containing these aluminum phthalocyanine compounds have the problem of insufficient heat resistance at 230° C. or higher and long-term light resistance, which are required for color filter applications, resulting in changes in spectral shape.
Furthermore, problems such as high viscosity of the coloring composition due to poor dispersibility or generation of foreign matter on the coating film have not been sufficiently improved at present.

Method used

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  • Phthalocyanine pigment composition, coloring composition and color filter
  • Phthalocyanine pigment composition, coloring composition and color filter
  • Phthalocyanine pigment composition, coloring composition and color filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0270] (Manufacture of Phthalocyanine Pigment (P-1))

[0271] In a reaction vessel, 225 parts of phthalonitrile and 78 parts of aluminum chloride anhydrate were mixed and stirred in 1250 parts of n-amyl alcohol. 266 parts of 1,8-diazabicyclo[5.4.0]undec-7-ene (1,8-Diazabicyclo[5.4.0]undec-7-ene, DBU) were added thereto, and the temperature was raised. Reflux at 136°C for 5 hours. The reaction solution cooled to 30 degreeC in the stirring state was injected into the mixed solvent containing 5000 parts of methanol and 10000 parts of water, stirring, and the blue slurry was obtained. The slurry was filtered, washed with a mixed solvent containing 2000 parts of methanol and 4000 parts of water, and dried to obtain 135 parts of chloroaluminum phthalocyanine (see the following chemical formula (5)).

[0272] As a result of elemental analysis of the obtained chloroaluminum phthalocyanine, the measured values ​​were (C) 66.7%, (H) 3.0% compared to the calculated values ​​(C) 66.85%,...

Embodiment 2

[0277] (Manufacture of Phthalocyanine Pigment (P-2))

[0278] Except that in the manufacture of the phthalocyanine pigment (P-1), 199 parts of 1,3-dibromo-5,5-dimethylhydantoin was changed to 186 parts of N-bromosuccinyl Except for the amine, 143 parts of phthalocyanine pigments (P-2) were produced in the same manner as in Example 1.

[0279] The number of bromine substitutions was calculated for the obtained phthalocyanine pigment (P-2), and it was 6.0 on average, and a peak corresponding to the same molecular weight was confirmed from the mass spectrum, and it was identified as the target compound. In addition, the halogen distribution range is 5. The volume average primary particle diameter of the obtained phthalocyanine pigment (P-2) was 47 nm.

Embodiment 3

[0281] (Manufacture of phthalocyanine pigment (P-3))

[0282] In addition to changing 199 parts of 1,3-dibromo-5,5-dimethylhydantoin to 249 parts of 1,3-dibromo- Except for 5,5-dimethylhydantoin, 187 parts of phthalocyanine pigments (P-3) were produced in the same manner as in Example 1.

[0283] The number of bromine substitutions was calculated for the obtained phthalocyanine pigment (P-3), and it was 10.3 on average, and a peak corresponding to the same molecular weight was confirmed from the mass spectrum, and it was identified as the target compound. In addition, the halogen distribution range is 7. The volume average primary particle diameter of the obtained phthalocyanine pigment (P-3) was 40 nm.

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Abstract

Provided is a phthalocyanine pigment which exhibits excellent fastness, has excellent color characteristics (brightness) and contrast ratio, generates few foreign objects caused by association or aggregation of molecules or the like even in a high temperature environment at greater than 230ºC, and is useful as a coloring agent. Also provided is a coloring composition using the phthalocyanine pigment, and a color filter. This phthalocyanine pigment is represented by general formula (1). In the formula, X denotes a halogen atom and n is an integer between 4 and 16. However, the average value for the degree of substitution by halogen atoms denoted by X is 6-15, and the halogen distribution width is 4 or higher. Y1 denotes -OP(=O)R1R2, -OC(=O)R3, -OS(=O)2R4 or a hydroxyl group.

Description

technical field [0001] Embodiments of the present invention relate to a novel phthalocyanine pigment and a manufacturing method thereof. Moreover, another embodiment relates to the coloring composition containing the said phthalocyanine pigment, and the color filter formed from the said coloring composition. The color filter can be suitably used in a color liquid crystal display device, an organic electroluminescence (EL) display device, a color pickup tube element, and the like. Background technique [0002] In recent years, as image recording materials, materials for forming color images in particular have become mainstream. Specifically, color image recording materials are widely used: inkjet recording materials, thermal transfer recording materials, electrophotographic recording materials, transfer silver halide photosensitive materials, printing inks, recording pens, and the like. In addition, in the case of a camera, in an imaging element such as a charge coupled dev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B47/10G02B5/20
CPCC09B47/10G02B5/20
Inventor 北村健一山本裕一清水宏明西田和史
Owner TOYO INK SC HOLD CO LTD
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