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π-type phthalocyanine pigment, method for producing same, pigment composition, coloring composition, and color filter

A technology for coloring composition and manufacturing method, which is applied in the direction of optical filters, chemical instruments and methods, azo dyes, etc., can solve the problems of easy crystallization transfer, poor stability, and low stability, and achieve color characteristics and stability Excellent, excellent display quality effects

Inactive Publication Date: 2016-01-13
TOYO INK SC HOLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its low stability, exposure to high temperature and / or organic solvents, etc., it is prone to crystallization transfer, and its stability is poor.

Method used

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  • π-type phthalocyanine pigment, method for producing same, pigment composition, coloring composition, and color filter
  • π-type phthalocyanine pigment, method for producing same, pigment composition, coloring composition, and color filter
  • π-type phthalocyanine pigment, method for producing same, pigment composition, coloring composition, and color filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0236] A π-type copper phthalocyanine pigment was produced by the Wheeler method using the following raw materials.

[0237]

[0238]

[0239] Each raw material was put into the synthesis apparatus, and it maintained at 180 degreeC for 5 hours, stirring, and the copper phthalocyanine pigment was produced|generated by this. The obtained reaction solution containing the copper phthalocyanine pigment was filtered under reduced pressure while being washed with 60° C. warm water, and the solvent, unreacted products, and the like were removed from the reaction solution.

[0240] The crude pigment from which the solvent and the like have been removed is subjected to filtration and purification as follows. First, the crude pigment was added to 500 parts of 3% sulfuric acid heated at 80° C., stirred for 30 minutes, and then filtered under reduced pressure while washing with 60° C. warm water. Next, after adding to 500 parts of 3% sodium hydroxide heated at 80 degreeC and stirrin...

Embodiment 2～ Embodiment 27

[0249] Carry out in the same manner as in Example 1, change the solvent type, the catalyst type, the phthalic acid (phthalic acid derivative) type, synthesis temperature, and phthalic anhydride input amount that are substituted at the alpha position as shown in Table 1 , α-position substituted phthalic acid input amount and solvent amount, synthesized by the same operation, thereby making the π-type copper phthalocyanine pigment 2-π-type copper phthalocyanine of Examples 2-27 Pigment 27. It was confirmed by powder X-ray diffraction that these crystal forms were all π-type.

[0250] Similarly, the pigment composition 2 - the pigment composition 27 and the coloring composition 2 - the coloring composition 27 were produced using the π-type copper phthalocyanine pigment 2 - the π-type copper phthalocyanine pigment 27.

[0251] [Table 1]

[0252]

Embodiment 28

[0254] A π-type copper phthalocyanine pigment was produced by the phthalonitrile method using the following raw materials.

[0255]

[0256] Each raw material was put into the synthesis apparatus, and after heating up to 130 degreeC, stirring, 15.2 parts of diazabicycloundecenes were added and maintained for 3 hours, and the copper phthalocyanine pigment 28 was produced. Furthermore, filtration purification, dispersion, and stirring and mixing after synthesis were performed in the same manner as in Example 1 to prepare the pigment composition 28 and the coloring composition 28 . The obtained crystal form was π form.

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Abstract

Provided is a pi-conjugated phthalocyanine pigment represented by general formula (1), which enables the provision of a color filter having excellent display quality including color performance. A pi-conjugated pigment having excellent color performance including brightness can be produced stably on the bounty of a conformational factor caused by selectively introducing a functional group into R1 to R8.

Description

technical field [0001] The present invention relates to a π-type phthalocyanine pigment having excellent color properties such as brightness and high stability in terms of heat resistance and the like, a method for producing the π-type phthalocyanine pigment, and the use of the π-type phthalocyanine pigment coloring composition. In particular, when used in a color filter (color filter) used for a color liquid crystal display device, a solid-state imaging device, etc., it is related with the said pigment which can provide the color filter excellent in display quality. Background technique [0002] In general, the color filter includes the following: the red color filter layer (R), the green color filter layer (G) and the blue color filter layer (B) formed on the surface of a transparent substrate such as glass, or equivalent The cyan color filter layer (C), the magenta color filter layer (M), and the yellow color filter layer (Y) of the complementary colors of red, green, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B47/24C09B47/06C09B47/067C09B47/073C09B47/14C09B47/18C09B67/20C09B67/50G02B5/20
CPCC09B47/065C09B47/062C09B47/063C09B47/064G02B5/223
Inventor 小谷卓也斋藤健太武藤俊明
Owner TOYO INK SC HOLD CO LTD
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