High-performance red organic pigment and application thereof in color filter

Abstract

The invention discloses a high-performance red organic pigment and application thereof in a color filter, and relates to the technical field of organic pigments. The preparation method of the high-performance red organic pigment comprises the following steps: S1, dispersing a pigment red 122 crude product, a hyperdispersant, a silane coupling agent, a chelating agent and isopropanol in a high-speed disperser to obtain a pigment dispersion liquid; s2, transferring the pigment dispersion liquid into a closed planetary ball mill, adding a ball milling medium, and performing wet grinding to obtain ball-milled slurry; and S3, drying the ball-milled slurry, and crushing to obtain the high-performance red organic pigment. The hyperdispersant prepared from the allyl-1, 3-sultone, the butyl acrylate, the styrene and the maleic anhydride monomer can enhance the dispersion force of pigment particles, so that the particle size distribution of the pigment is more uniform, and the caking and precipitation of the pigment particles in practical application are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of organic pigments, and in particular to a high-performance red organic pigment and application thereof in a color filter. Background Art

[0002] As an important organic pigment, red organic pigment is widely used in optoelectronic display devices such as color filters, liquid crystal displays, TV screens, and smart phones. It has important application value in the fields of color display and optical filtering technology. With the rapid development of electronic products and display technology, especially the increasing demand for high-resolution and high-color reproduction displays, the performance requirements of red organic pigments are also constantly improving. In order to meet these demands, the key properties of red organic pigments, such as color purity, dispersibility, light stability, and thermal stability, have become important factors affecting their final application effects.

[0003] However, in the preparation process of red organic pigments, due to the complexity of their molecular structure, the pigment particles often have a large particle size distribution and uneven dispersion, which directly affects their application effect in the filter. Especially in the wet grinding process, the pigment particles are easy to agglomerate and aggregate, resulting in poor dispersion of the pigment, making it impossible for the pigment to form a uniform film during the coating process, and ultimately resulting in unstable optical performance of the filter, poor color reproduction, and a short service life.

[0004] In order to improve the dispersibility of red organic pigments, the traditional solution is to use surfactants, but this method often affects the color saturation of the pigment or its stability in long-term use to a certain extent. Therefore, how to further improve the dispersibility of the pigment in the filter while maintaining its excellent color performance and stability has become an important topic in the current research of red organic pigments. Summary of the invention

[0005] Based on the problems existing in the background technology, the present invention provides a high-performance red organic pigment. By adding a hyperdispersant during wet grinding, the dispersion performance of the organic pigment is improved, the pigment particle size is reduced, and the stability of the pigment paste is improved. The pigment is suitable for preparing liquid crystal display filters.

[0006] The present invention is implemented by the following technical solutions:

[0007] The first aspect of the present invention provides a high-performance red organic pigment, comprising the following preparation steps:

[0008] S1. The crude product of Pigment Red 122, a hyperdispersant, a silane coupling agent, a chelating agent and isopropanol are dispersed in a high-speed disperser to obtain a pigment dispersion;

[0009] S2. The pigment dispersion is transferred to a closed planetary ball mill, a ball milling medium is added, and wet grinding is performed to obtain a ball mill slurry;

[0010] S3. The ball mill slurry is dried and then crushed to obtain a high-performance red organic pigment.

[0011] Furthermore, the components in step S1 are specifically as follows in parts by weight: 150-200 parts of crude Pigment Red 122, 3-8 parts of hyperdispersant, 1-5 parts of silane coupling agent, 1-5 parts of chelating agent and 200-250 parts of isopropanol.

[0012] Furthermore, the preparation method of the hyperdispersant in step S1 is specifically as follows: add propenyl-1,3-sultone, butyl acrylate, styrene and maleic anhydride monomers to ethylene glycol methyl ether, heat to 70-80°C, add initiator and chain transfer agent, stir and react for 4-6 hours, after the reaction is completed, remove the solvent by reduced pressure distillation, and dry to obtain the hyperdispersant.

[0013] Furthermore, during the preparation of the hyperdispersant, the molar ratio of propenyl-1,3-sultone, butyl acrylate, styrene and maleic anhydride is (0.8-1.2):(1.5-2.5):(1.3-1.8):(0.2-0.6).

[0014] As a monomer with special functional groups, the sultone ring structure of allyl-1,3-sultone gives the dispersant good surface activity and dispersing properties. Through its balanced hydrophilicity and lipophilicity, it can effectively reduce the surface tension of the pigment and improve the dispersion stability of the pigment particles. As a key flexible segment monomer, butyl acrylate can enhance the steric hindrance effect and spatial configuration regulation ability of the hyperdispersant through its long alkyl chain, which helps to better wrap and disperse the pigment particles and improve the interaction between the dispersant and the pigment surface. Styrene monomer can enhance the intermolecular interaction and system stability of the hyperdispersant through its aromatic ring structure, while providing a certain rigid skeleton to balance the flexibility and strength of the molecular chain. As a monomer with high reactivity, maleic anhydride can undergo effective graft copolymerization reaction with other monomers through its anhydrous anhydride structure to form a complex graft copolymer molecular structure, thereby enhancing the crosslinking degree and network structure stability of the hyperdispersant. In the present invention, the four monomers of propenyl-1,3-sultone, butyl acrylate, styrene and maleic anhydride work synergistically at a specific molar ratio to jointly construct a hyperdispersant molecular structure with excellent dispersibility.

[0015] Furthermore, in the preparation process of the super dispersant, the initiator is azobisisobutyronitrile, and its usage is 1-2% of the total mass of the monomers; in the preparation process of the super dispersant, the chain transfer agent is n-butyl mercaptan, and its usage is 0.1-1% of the total mass of the monomers.

[0016] Furthermore, the silane coupling agent is γ-glycidyl ether propyl trimethoxy silane; and the chelating agent is EDTA.

[0017] Furthermore, the ball milling medium is zirconia beads with a diameter of 0.5-1 mm; the rotation speed of the ball mill is 800-1000 rpm, the grinding time is 10-12 h, and the grinding temperature is lower than 40°C.

[0018] Furthermore, during the stirring reaction, the reaction process is intelligently monitored, including: monitoring the reaction information of the reaction process to obtain current reaction phenomenon collection information; performing change analysis on the current reaction phenomenon collection information in combination with the reaction phenomenon collection information at the previous moment to determine whether the reaction phenomenon collection information has changed, and obtaining a first change analysis result; according to the first change analysis result, when the reaction phenomenon collection information changes, the reaction process is still continuing and the reaction is not completed, and the reaction phenomenon collection information acquisition, analysis and judgment are continued; when the reaction phenomenon collection information has not changed, the reaction phenomenon collection information at the next moment is acquired, and then the reaction phenomenon collection information at the next moment and the current reaction phenomenon collection information are analyzed for changes; when there is a change between the reaction phenomenon collection information at the next moment and the current reaction phenomenon collection information, the reaction process is still continuing and the reaction is not completed, and the reaction phenomenon collection information acquisition, analysis and judgment are continued; when there is no change between the reaction phenomenon collection information at the next moment and the current reaction phenomenon collection information, the reaction process has stopped and the reaction is completed.

[0019] Further, the ball mill slurry is dried and then crushed, and the crushing result is also inspected, including: performing particle identification on the crushing result, collecting particle size information of the crushing result, and obtaining crushing result detection data; performing preliminary analysis based on the crushing result detection data to determine whether the particle sizes are similar, and obtaining preliminary analysis results; when the preliminary analysis result shows that the particle sizes are similar, performing mean calculation on the crushing result detection data, and judging whether the mean calculation result meets the preset standard according to the mean calculation result, and obtaining a first judgment result, when the first judgment result is that the mean calculation result meets the preset standard, a high-performance red organic pigment is obtained, and when the first judgment result is that the mean calculation result does not meet the preset standard, performing secondary crushing on the crushing result; when the preliminary analysis result shows that the particle sizes are not similar, performing extreme value analysis on the crushing result detection data to obtain the maximum value of the particle size, judging whether it meets the preset standard according to the maximum value of the particle size, and obtaining a second judgment result, when the second judgment result is that the maximum value of the particle size meets the preset standard, a high-performance red organic pigment is obtained, and when the second judgment result is that the maximum value of the particle size does not meet the preset standard, screening is performed on the crushing result, and particles that do not meet the preset standard are screened out to obtain a screening result, and then secondary crushing is performed on the screening result.

[0020] The second aspect of the present invention provides the use of the high-performance red organic pigment in a filter.

[0021] Beneficial effects of the present invention:

[0022] 1. In the present invention, by using a hyperdispersant prepared from propenyl-1,3-sultone, butyl acrylate, styrene and maleic anhydride monomers, the dispersing force of the pigment particles can be enhanced, so that the particle size distribution of the pigment is more uniform, and the agglomeration and precipitation of the pigment particles in practical applications are avoided. In addition, the use of the hyperdispersant in conjunction with a silane coupling agent (γ-glycidyl ether propyl trimethoxy silane) and a chelating agent (EDTA) further improves the adhesion between the pigment and the substrate and enhances the chemical stability of the pigment.

[0023] 2. The high-performance red organic pigment prepared by the present invention is suitable for the field of optical filters, has good dispersibility and color uniformity, and can significantly improve the optical performance of the optical filter. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments, but the protection scope of the present invention is not limited to the following embodiments.

[0025] Example 1

[0026] A high-performance red organic pigment comprises the following preparation steps:

[0027] S1. In parts by weight, 180 parts of crude Pigment Red 122, 5 parts of a hyperdispersant, 2 parts of γ-glycidyl ether propyl trimethoxysilane, 2 parts of a chelating agent and 220 parts of isopropanol were dispersed in a high-speed disperser to obtain a pigment dispersion;

[0028] S2. The pigment dispersion is transferred to a closed planetary ball mill, and a ball milling medium is added for wet grinding. The ball milling medium is a zirconia bead with a diameter of 0.5 mm. The ball mill speed is 1000 rpm, the grinding time is 10 h, and the grinding temperature is below 40 ° C to obtain a ball milled slurry.

[0029] S3. The ball mill slurry is dried and then crushed to obtain a high-performance red organic pigment.

[0030] Among them, the preparation method of the super dispersant in step S1 is specifically as follows: adding propenyl-1,3-sultone, butyl acrylate, styrene and maleic anhydride monomers in a molar ratio of 1:2:1.5:0.5 to ethylene glycol methyl ether, heating to 75°C, adding azobisisobutyronitrile (the amount is 1.5% of the total mass of the monomers) and n-butyl mercaptan (the amount is 0.5% of the total mass of the monomers), stirring the reaction for 5 hours, and after the reaction is completed, removing the solvent by reduced pressure distillation, and drying to obtain the super dispersant.

[0031] Example 2

[0032] The difference between this embodiment and embodiment 1 is that in step S1, 200 parts of crude Pigment Red 122, 8 parts of hyperdispersant, 3 parts of γ-glycidyl ether propyl trimethoxy silane, 3 parts of chelating agent and 250 parts of isopropanol are included by weight; the remaining steps are the same as in embodiment 1.

[0033] Example 3

[0034] The difference between this embodiment and embodiment 1 is that in the preparation process of the hyperdispersant, the molar ratio of propenyl-1,3-sultone, butyl acrylate, styrene and maleic anhydride monomer is 1.2:2:1.5:0.6; the remaining steps are the same as in embodiment 1.

[0035] Furthermore, during the stirring reaction, the reaction process is intelligently monitored, including: monitoring the reaction information of the reaction process to obtain current reaction phenomenon collection information; performing change analysis on the current reaction phenomenon collection information in combination with the reaction phenomenon collection information at the previous moment to determine whether the reaction phenomenon collection information has changed, and obtaining a first change analysis result; according to the first change analysis result, when the reaction phenomenon collection information changes, the reaction process is still continuing and the reaction is not completed, and the reaction phenomenon collection information acquisition, analysis and judgment are continued; when the reaction phenomenon collection information has not changed, the reaction phenomenon collection information at the next moment is acquired, and then the reaction phenomenon collection information at the next moment and the current reaction phenomenon collection information are analyzed for changes; when there is a change between the reaction phenomenon collection information at the next moment and the current reaction phenomenon collection information, the reaction process is still continuing and the reaction is not completed, and the reaction phenomenon collection information acquisition, analysis and judgment are continued; when there is no change between the reaction phenomenon collection information at the next moment and the current reaction phenomenon collection information, the reaction process has stopped and the reaction is completed. By monitoring the reaction information during the reaction process, the reaction phenomena in the reaction process can be collected, and then the reaction phenomenon collected information can be analyzed to determine whether the reaction is completed. There is no need for subjective human judgment on whether the reaction is completed, and it can also ensure that the reaction is fully completed and the acquisition rate of the superdispersant is guaranteed. When the reaction phenomenon collected information does not change, the reaction phenomenon collected information at the next moment is obtained, and the reaction phenomenon collected information at the next moment is analyzed for changes with the current reaction phenomenon collected information to avoid the illusion that the reaction is completed when the reaction phenomenon collected information does not change once. At the same time, the sufficiency of the reaction can be improved by the fact that the reaction phenomenon collected information does not change twice, so as to ensure the accuracy of the judgment on whether the reaction is completed.

[0036] Further, the ball mill slurry is dried and then crushed, and the crushing result is also inspected, including: performing particle identification on the crushing result, collecting particle size information of the crushing result, and obtaining crushing result detection data; performing preliminary analysis based on the crushing result detection data to determine whether the particle sizes are similar, and obtaining preliminary analysis results; when the preliminary analysis result shows that the particle sizes are similar, performing mean calculation on the crushing result detection data, and judging whether the mean calculation result meets the preset standard according to the mean calculation result, and obtaining a first judgment result, when the first judgment result is that the mean calculation result meets the preset standard, a high-performance red organic pigment is obtained, and when the first judgment result is that the mean calculation result does not meet the preset standard, performing secondary crushing on the crushing result; when the preliminary analysis result shows that the particle sizes are not similar, performing extreme value analysis on the crushing result detection data to obtain the maximum value of the particle size, judging whether it meets the preset standard according to the maximum value of the particle size, and obtaining a second judgment result, when the second judgment result is that the maximum value of the particle size meets the preset standard, a high-performance red organic pigment is obtained, and when the second judgment result is that the maximum value of the particle size does not meet the preset standard, screening is performed on the crushing result, and particles that do not meet the preset standard are screened out to obtain a screening result, and then secondary crushing is performed on the screening result. Among them, similarity means that the difference in particle size is within a preset range. The preset standard is to set a standardized size range for the particle size. By testing the crushing results to ensure whether the crushing results meet the standards, the crushing efficiency is guaranteed, the quality of high-performance red organic pigments is improved, and the possibility of agglomeration and precipitation of pigment particles of high-performance red organic pigments in actual applications is reduced as much as possible, ensuring the application effect of high-performance red organic pigments in filters and improving the optical stability of filters.

[0037] Comparative Example 1

[0038] The difference between this comparative example and Example 1 is that the dispersant used in step S1 is BYK-220S with a solid content of 52%; the remaining steps are the same as in Example 1.

[0039] Comparative Example 2

[0040] The difference between this comparative example and Example 1 is that in step S2, in the preparation process of the hyperdispersant, the molar ratio of acryl-1,3-sultone, butyl acrylate, styrene and maleic anhydride monomer is 1.5:2:1.5:0.5; the remaining steps are the same as in Example 1.

[0041] Comparative Example 3

[0042] The difference between this comparative example and Example 1 is that in step S2, in the preparation process of the hyperdispersant, the molar ratio of acryl-1,3-sultone, butyl acrylate, styrene and maleic anhydride monomer is 1:2:1.5:0.8; the remaining steps are the same as in Example 1.

[0043] Application Example 1

[0044] The pigment of Example 1 is prepared into a red color paste; the specific method is: 5.7 g of red organic pigment, 4.5 g of grinding resin BM52 (produced by Shanghai Bolier Chemical), 2.3 g of grinding aid WinSperse3030 (Weibos New Materials (Weifang) Co., Ltd.), 25.5 g of propylene glycol methyl ether acetate, add 0.1 mm zirconium balls into a grinding jar, use a Miqi double planetary power ball mill to mix and disperse for 24 hours to obtain a red color paste.

[0045] Application Example 2

[0046] The pigment obtained in Example 2 of the same weight is used to replace the pigment in Example 1 used in Application Example 1, and the remaining components, component amounts and operating process are the same as those in Application Example 1.

[0047] Application Example 3

[0048] The pigment obtained in Example 3 of the same weight is used to replace the pigment in Example 1 used in Application Example 1, and the remaining components, component amounts and operating process are the same as those in Application Example 1.

[0049] Comparative application example 1

[0050] The pigment obtained in Comparative Example 1 of equal weight is used to replace the pigment of Example 1 used in Application Example 1, and the remaining components, component amounts and operating process are the same as those in Application Example 1.

[0051] Comparative Application Example 2

[0052] The pigment obtained in Comparative Example 2 of equal weight is used to replace the pigment of Example 1 used in Application Example 1, and the remaining components, component amounts and operating process are the same as those in Application Example 1.

[0053] Comparative Application Example 3

[0054] The pigment obtained in Comparative Example 3 of equal weight is used to replace the pigment of Example 1 used in Application Example 1, and the remaining components, component amounts and operating process are the same as those in Application Example 1.

[0055] Test example

[0056] The red color paste prepared by corresponding application examples 1-3 and comparative application examples 1-3 was subjected to performance testing.

[0057] (1) The average particle size and particle size distribution of the red color paste obtained in the application example and the comparative application example were tested using a particle size analyzer 90Plus.

[0058] (2) The red color paste prepared in Application Example 1-3 and Comparative Application Example 1-3 was allowed to stand at room temperature for 1 day, samples were taken, and the initial viscosity was tested using a viscometer DV2T; the remaining red color paste was allowed to stand at 40°C for 7 days, samples were taken, and the 7-day viscosity was tested using a viscometer DV2T.

[0059] (3) Take 1 mL of the red color paste prepared in Application Example 1-3 and Comparative Example 1-3, spin coat it on a glass sheet at 80 rpm, place the coated glass sheet on a 120°C heating plate and dry it for 1 min, then transfer it to a 230°C oven and heat it for 30 min, and measure the brightness (Y) and contrast.

[0060] The test results are shown in Table 1.

[0061] Table 1

[0062]

[0063] It can be seen from the data in Table 1 that the red color paste prepared by using Examples 1-3 of the present invention has a smaller average particle size, a narrower particle size distribution, better storage stability, and significantly higher brightness (Y) and contrast than the comparative application example. The comparative application example uses the organic pigment prepared in Comparative Example 1, and the dispersant used in the preparation of the organic pigment is BYK-220S. The performance of the red color paste finally prepared is significantly lower than that in Application Examples 1-3. In Comparative Example Application 2, the organic pigment prepared in Comparative Example 2 is used. The amount of propenyl-1,3-sultone is increased when preparing the hyperdispersant. Propylene-1,3-sultone contains a highly polar sulfonic acid group, which helps to enhance the repulsive force between the pigment particles, thereby effectively preventing the aggregation of the pigment particles; increasing the amount of propenyl-1,3-sultone will instead cause the formation of an excessively thick polar film layer on the surface of the pigment particles, resulting in excessive coating of the pigment particles by the dispersant, thereby changing the morphology of the particles, resulting in an increase in particle size or an uneven particle size distribution. In addition, too much propenyl-1,3-sultone will cause the surface hydrophilicity of some pigment particles to be too strong, which is not conducive to good bonding with the matrix material, resulting in reduced dispersibility. The uneven size of the pigment particles and the reduction of dispersibility will lead to the presentation of the pigment color, especially the optical absorption and reflection characteristics of the pigment, affecting the brightness (Y) and contrast of the filter. Propylene-1,3-sultone can provide enough surface active groups to ensure good dispersibility of the pigment particles, but excessive addition will lead to excessive hydrophilicity, affecting the hydrophobicity and stability of the pigment particles. In comparative application example 3, the organic pigment prepared in comparative example 3 is used. The amount of maleic anhydride used in the preparation of the hyperdispersant is increased. Excessive maleic anhydride will make the surface polarity of the hyperdispersant too strong, produce too strong adsorption on the pigment particles, and affect the particle size control. In addition, excessive maleic anhydride will also cause the surface hydrophilicity of the pigment particles to be too high, resulting in enhanced hydration and incompatibility of the pigment, affecting stability. Problems with the morphology and distribution of pigment particles will naturally affect the optical properties of the pigment, and ultimately reduce the optical performance of the filter. Maleic anhydride mainly plays a role in enhancing adhesion and regulating dispersibility. Excessive addition will also increase the excessive hydrophilicity of the pigment surface, thereby affecting stability.

[0064] In the present invention, the hydrophilic groups provided by propenyl-1,3-sultone and maleic anhydride and the hydrophobicity of styrene are balanced with each other, ensuring that the dispersant can effectively wet the pigment surface without causing excessive hydrophilization, so that the molecular structure of the dispersant can improve the dispersibility of the pigment and ensure the stability of the pigment particles. Butyl acrylate provides a flexible segment to enhance wettability, styrene enhances rigidity and stability, and maleic anhydride adjusts the polarity of the dispersant so that it has sufficient affinity to combine with the pigment surface, thereby achieving an ideal dispersion effect.

[0065] Finally, it should be noted that the above-mentioned embodiments only express several implementation methods of the present invention and are not intended to limit the invention. For those skilled in the art, any modification, equivalent replacement, improvement, etc. made without departing from the concept of the present invention should be included in the protection scope of the invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A high-performance red organic pigment, characterized in that: The method comprises the following preparation steps: S1. The crude product of Pigment Red 122, a hyperdispersant, a silane coupling agent, a chelating agent and isopropanol are dispersed in a high-speed disperser to obtain a pigment dispersion; S2. The pigment dispersion is transferred to a closed planetary ball mill, a ball milling medium is added, and wet grinding is performed to obtain a ball mill slurry; S3. The ball mill slurry is dried and then crushed to obtain a high-performance red organic pigment.

2. The high-performance red organic pigment according to claim 1, characterized in that: The components in step S1 are specifically as follows by weight: 150-200 parts of crude Pigment Red 122, 3-8 parts of hyperdispersant, 1-5 parts of silane coupling agent, 1-5 parts of chelating agent and 200-250 parts of isopropanol.

3. The high-performance red organic pigment according to claim 1, characterized in that: The preparation method of the hyperdispersant in step S1 is specifically as follows: add propenyl-1,3-sultone, butyl acrylate, styrene and maleic anhydride monomers to ethylene glycol methyl ether, heat to 70-80°C, add initiator and chain transfer agent, stir and react for 4-6 hours, and after the reaction is completed, remove the solvent by reduced pressure distillation and dry to obtain the hyperdispersant.

4. The high-performance red organic pigment according to claim 3, characterized in that: In the process of preparing the super dispersant, the molar ratio of propenyl-1,3-sultone, butyl acrylate, styrene and maleic anhydride is (0.8-1.2):(1.5-2.5):(1.3-1.8):(0.2-0.6).

5. The high-performance red organic pigment according to claim 3, characterized in that: In the process of preparing the super dispersant, the initiator is azobisisobutyronitrile, and its usage is 1-2% of the total weight of the monomer; in the process of preparing the super dispersant, the chain transfer agent is n-butyl mercaptan, and its usage is 0.1-1% of the total weight of the monomer.

6. The high-performance red organic pigment according to claim 1, characterized in that: The silane coupling agent is γ-glycidyl ether propyl trimethoxy silane; and the chelating agent is EDTA.

7. The high-performance red organic pigment according to claim 1, characterized in that: The ball milling medium is zirconia beads with a diameter of 0.5-1 mm; the rotation speed of the ball mill is 800-1000 rpm, the grinding time is 10-12 hours, and the grinding temperature is lower than 40°C.

8. The high-performance red organic pigment according to claim 3, characterized in that: During the stirring reaction, the reaction process is intelligently monitored, including: monitoring the reaction information of the reaction process to obtain the current reaction phenomenon collection information; combining the current reaction phenomenon collection information with the reaction phenomenon collection information at the previous moment for change analysis to determine whether the reaction phenomenon collection information has changed, and obtain a first change analysis result; according to the first change analysis result, when the reaction phenomenon collection information changes, the reaction process is still continuing and the reaction is not completed, and the reaction phenomenon collection information acquisition, analysis and judgment are continued; when the reaction phenomenon collection information has not changed, the reaction phenomenon collection information at the next moment is acquired, and then the reaction phenomenon collection information at the next moment and the current reaction phenomenon collection information are analyzed for changes; when there is a change between the reaction phenomenon collection information at the next moment and the current reaction phenomenon collection information, the reaction process is still continuing and the reaction is not completed, and the reaction phenomenon collection information acquisition, analysis and judgment are continued; when there is no change between the reaction phenomenon collection information at the next moment and the current reaction phenomenon collection information, the reaction process has stopped and the reaction is completed.

9. The high-performance red organic pigment according to claim 1, characterized in that: The ball mill slurry is dried and then crushed, and the crushing result is also inspected, including: performing particle identification on the crushing result, collecting particle size information of the crushing result, and obtaining crushing result detection data; performing preliminary analysis based on the crushing result detection data to determine whether the particle sizes are similar, and obtaining preliminary analysis results; when the preliminary analysis result shows that the particle sizes are similar, performing mean calculation on the crushing result detection data, and judging whether the mean calculation result meets the preset standard according to the mean calculation result, and obtaining a first judgment result, when the first judgment result is that the mean calculation result meets the preset standard, a high-performance red organic pigment is obtained, and when the first judgment result is that the mean calculation result does not meet the preset standard, the crushing result is subjected to secondary crushing; when the preliminary analysis result shows that the particle sizes are not similar, performing extreme value analysis on the crushing result detection data to obtain the maximum value of the particle size, judging whether it meets the preset standard according to the maximum value of the particle size, and obtaining a second judgment result, when the second judgment result is that the maximum value of the particle size meets the preset standard, a high-performance red organic pigment is obtained, and when the second judgment result is that the maximum value of the particle size does not meet the preset standard, the crushing result is screened, and particles that do not meet the preset standard are screened out to obtain a screening result, and then secondary crushing is performed on the screening result.

10. Use of the high-performance red organic pigment according to any one of claims 1 to 9 in a filter.

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