A high-performance red organic pigment and its application in color filters

Abstract

The present invention discloses a high-performance red organic pigment and its application in color filters, relating to the technical field of organic pigments. The preparation steps of the high-performance red organic pigment are as follows: S1. Pigment Red 122 crude product, 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, ball milling media are added, and wet milling is carried out to obtain a ball-milled slurry; S3. The ball-milled slurry is dried and then pulverized to obtain the high-performance red organic pigment. In the present invention, by using a hyperdispersant prepared from allyl-1,3-sulfonic acid lactone, butyl acrylate, styrene, and maleic anhydride monomers, the dispersing power of pigment particles can be enhanced, making the particle size distribution of the pigment more uniform and avoiding the agglomeration and precipitation of pigment particles in practical applications.

Description

Technical Field

[0001] The present invention relates to the technical field of organic pigments, and specifically relates to a high-performance red organic pigment and its application in color filters. Background Art

[0002] As an important type of organic pigment, red organic pigments are widely used in optoelectronic display devices such as color filters, liquid crystal displays, television screens, and smartphones, and have important application values especially in the fields of color display and optical filtering technology. With the rapid development of electronic products and display technologies, especially the increasing demand for high-resolution and high-color-reduction displays, the performance requirements for red organic pigments are also continuously improving. To meet these demands, key properties such as color purity, dispersibility, light stability, and thermal stability of red organic pigments have become important factors affecting their final application effects.

[0003] However, during the preparation process of red organic pigments, due to the complexity of their molecular structures, pigment particles often have a large particle size distribution and uneven dispersibility, which directly affects their application effects in color filters. Especially during the wet grinding process, pigment particles are prone to agglomeration and aggregation, resulting in poor dispersion of the pigment, making it impossible to form a uniform thin film during the coating process, and ultimately leading to unstable optical properties of the color filter, poor color reduction, and a short service life.

[0004] To improve the dispersibility of red organic pigments, traditional solutions mostly use surfactants, but this method often affects the color saturation of the pigment to a certain extent or its stability during long-term use. Therefore, how to further improve the dispersibility of red organic pigments in color filters while maintaining their excellent color performance and stability has become an important topic in the current research on red organic pigments. Summary of the Invention

[0005] Based on the problems existing in the background art, 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 particle size of the pigment is reduced, and the stability of the pigment slurry is enhanced, which is suitable for the preparation of liquid crystal display color filters.

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

[0007] In a first aspect of the present invention, a high-performance red organic pigment is provided, including the following preparation steps:

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

[0009] S2. Transfer the pigment dispersion liquid to a closed planetary ball mill, add the ball milling medium, and perform wet grinding to obtain a ball mill slurry.

[0010] S3. Dry and crush the ball mill slurry to obtain a high-performance red organic pigment.

[0011] Further, in step S1, each component is 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.

[0012] Further, the preparation method of the hyperdispersant in step S1 is specifically as follows: Add allyl-1,3-sultone, butyl acrylate, styrene, and maleic anhydride monomers to ethylene glycol monomethyl ether, heat to 70 - 80 °C, add an initiator and a chain transfer agent, stir and react for 4 - 6 h. After the reaction is completed, remove the solvent by vacuum distillation, and dry to obtain the hyperdispersant.

[0013] Further, in the preparation process of the hyperdispersant, the molar ratio of allyl-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, allyl-1,3-sultone endows the dispersant with good surface activity and dispersion performance through its sulfonic acid lactone ring structure. Through its hydrophilic-lipophilic balance characteristics, it can effectively reduce the surface tension of the pigment and improve the dispersion stability of pigment particles; butyl acrylate, as a key flexible chain segment monomer, its long alkyl chain can enhance the steric hindrance effect and the ability to regulate the spatial configuration of the hyperdispersant, which helps to better wrap and disperse 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, and at the same time provide a certain rigid backbone to balance the flexibility and strength of the molecular chain; maleic anhydride, as a monomer with high reactivity, its anhydride structure can effectively carry out graft copolymerization reactions with other monomers to form a complex graft copolymer molecular structure, enhancing the crosslinking degree and network structure stability of the hyperdispersant. In the present invention, the four monomers of allyl-1,3-sultone, butyl acrylate, styrene, and maleic anhydride play a synergistic role in a specific molar ratio to jointly construct a hyperdispersant molecular structure with excellent dispersion performance.

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

[0016] Further, the silane coupling agent is γ-glycidoxypropyltrimethoxysilane; the chelating agent is EDTA.

[0017] Further, 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 revolutions / min, the grinding time is 10 - 12 h, and the grinding temperature is lower than 40°C.

[0018] Further, during the stirring reaction, intelligent monitoring is carried out on the reaction process, including: monitoring the reaction information during the reaction process to obtain the currently collected reaction phenomenon information; combining the currently collected reaction phenomenon information with the reaction phenomenon information collected at the previous moment for change analysis to determine whether the reaction phenomenon information has changed, and obtaining the first change analysis result; according to the first change analysis result, when the reaction phenomenon information has changed, the reaction process continues and the reaction is not completed, and continue to obtain and analyze the reaction phenomenon information. When the reaction phenomenon information has not changed, obtain the reaction phenomenon information at the next moment, and then perform change analysis on the reaction phenomenon information at the next moment and the currently collected reaction phenomenon information. When there is a change between the reaction phenomenon information at the next moment and the currently collected reaction phenomenon information, the reaction process continues and the reaction is not completed, and continue to obtain and analyze the reaction phenomenon information; when there is no change between the reaction phenomenon information at the next moment and the currently collected reaction phenomenon information, the reaction process has stopped and the reaction is completed.

[0019] Further, after drying and crushing the ball mill slurry, inspection is also carried out on the crushing result, including: identifying the particles for the crushing result, collecting the particle size information of the crushing result to obtain the crushing result detection data; performing preliminary analysis based on the crushing result detection data to judge whether the particle sizes are similar, and obtaining the preliminary analysis result; when the preliminary analysis result is that the particle sizes are similar, calculate the mean value for the crushing result detection data, and judge whether the mean value calculation result meets the preset standard according to the mean value calculation result, and obtain the first judgment result. When the first judgment result is that the mean value calculation result meets the preset standard, a high-performance red organic pigment is obtained. When the first judgment result is that the mean value calculation result does not meet the preset standard, perform secondary crushing on the crushing result; when the preliminary analysis result is that the particle sizes are not similar, perform extreme value analysis on the crushing result detection data to obtain the maximum particle size, and judge whether it meets the preset standard according to the maximum particle size to obtain the second judgment result. When the second judgment result is that the maximum particle size meets the preset standard, a high-performance red organic pigment is obtained. When the second judgment result is that the maximum particle size does not meet the preset standard, screen the crushing result, screen out the particles that do not meet the preset standard to obtain the screening result, and then perform secondary crushing on the screening result.

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

[0021] Advantages of the present invention:

[0022] 1. In the present invention, by using a hyperdispersant prepared from allyl-1,3-sultone, butyl acrylate, styrene and maleic anhydride monomers, the dispersibility of pigment particles can be enhanced, making the particle size distribution of the pigment more uniform and avoiding caking and precipitation of pigment particles in practical applications. In addition, the combined use of the hyperdispersant with a silane coupling agent (γ-glycidoxypropyltrimethoxysilane) 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 applicable to the field of filters. Its good dispersibility and color uniformity can significantly improve the optical performance of the filters. Specific embodiments

[0024] The technical solutions of the present invention will be 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, including the following preparation steps:

[0027] S1. By weight, 180 parts of crude Pigment Red 122, 5 parts of hyperdispersant, 2 parts of γ-glycidoxypropyltrimethoxysilane, 2 parts of chelating agent and 220 parts of isopropanol are dispersed in a high-speed disperser to obtain a pigment dispersion;

[0028] S2. Transfer the pigment dispersion to a closed planetary ball mill, add ball milling media, and carry out wet grinding. The ball milling media are zirconia beads with a diameter of 0.5 mm; the rotation speed of the ball mill is 1000 revolutions / min, the grinding time is 10 h, and the grinding temperature is lower than 40 °C to obtain a ball mill slurry;

[0029] S3. Dry and crush the ball mill slurry to obtain the high-performance red organic pigment.

[0030] Among them, the preparation method of the hyperdispersant in step S1 is specifically as follows: Allyl-1,3-sultone, butyl acrylate, styrene and maleic anhydride monomers are added to ethylene glycol methyl ether in a molar ratio of 1:2:1.5:0.5, heated to 75 °C, azobisisobutyronitrile (the dosage is 1.5% of the total mass of the monomers) and n-butyl mercaptan (the dosage is 0.5% of the total mass of the monomers) are added, and the mixture is stirred and reacted for 5 h. After the reaction is completed, the solvent is removed by vacuum distillation and dried to obtain the hyperdispersant.

[0031] Example 2

[0032] The difference between this example and Example 1 is that in step S1, it includes 200 parts of crude pigment red 122, 8 parts of hyperdispersant, 3 parts of γ-glycidyl ether propyltrimethoxysilane, 3 parts of chelating agent and 250 parts of isopropanol by weight; the remaining steps are the same as those in Example 1.

[0033] Example 3

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

[0035] Further, during the stirring reaction, intelligent monitoring is carried out for the reaction process, including: monitoring the reaction information for the reaction process to obtain the current reaction phenomenon acquisition information; combining the current reaction phenomenon acquisition information with the reaction phenomenon acquisition information of the previous moment for change analysis to determine whether the reaction phenomenon acquisition information has changed, and obtaining the first change analysis result; according to the first change analysis result, when the reaction phenomenon acquisition information changes, the reaction process continues and the reaction is not completed, and continue to obtain and analyze and judge the reaction phenomenon acquisition information. When the reaction phenomenon acquisition information does not change, obtain the reaction phenomenon acquisition information of the next moment, and then perform change analysis on the reaction phenomenon acquisition information of the next moment and the current reaction phenomenon acquisition information. When there is a change between the reaction phenomenon acquisition information of the next moment and the current reaction phenomenon acquisition information, the reaction process continues and the reaction is not completed, and continue to obtain and analyze and judge the reaction phenomenon acquisition information; when there is no change between the reaction phenomenon acquisition information of the next moment and the current reaction phenomenon acquisition information, the reaction process has stopped and the reaction is completed. By monitoring the reaction information for the reaction process, the reaction phenomena in the reaction process can be collected, so as to analyze and determine whether the reaction is completed based on the reaction phenomenon acquisition information, without the need for subjective judgment by humans on whether the reaction is completed. Moreover, it can ensure that the reaction is fully completed, guarantee the acquisition rate of the hyperdispersant, and when the reaction phenomenon acquisition information does not change, by obtaining the reaction phenomenon acquisition information of the next moment and performing change analysis on the reaction phenomenon acquisition information of the next moment and the current reaction phenomenon acquisition information, it can avoid the false appearance of the reaction being completed due to the reaction phenomenon acquisition information not changing once, and at the same time, it can also improve the sufficiency of the reaction and guarantee the accuracy of the judgment on whether the reaction is completed through the reaction phenomenon acquisition information not changing twice.

[0036] Furthermore, the ball-milled slurry is dried and then pulverized, and the pulverization results are also inspected, including: identifying particles in the pulverization results, collecting particle size information of the pulverization results to obtain pulverization result detection data; performing preliminary analysis based on the pulverization result detection data to determine whether the particle sizes are similar, obtaining a preliminary analysis result; when the preliminary analysis result indicates that the particle sizes are similar, calculating the mean value of the pulverization result detection data, and judging whether the mean value calculation result meets a preset standard according to the mean value calculation result to obtain a first judgment result. When the first judgment result is that the mean value calculation result meets the preset standard, a high-performance red organic pigment is obtained. When the first judgment result is that the mean value calculation result does not meet the preset standard, the pulverization results are pulverized a second time; when the preliminary analysis result indicates that the particle sizes are not similar, performing extreme value analysis on the pulverization result detection data, obtaining the maximum particle size, and judging whether it meets the preset standard according to the maximum particle size to obtain a second judgment result. When the second judgment result is that the maximum particle size meets the preset standard, a high-performance red organic pigment is obtained. When the second judgment result is that the maximum particle size does not meet the preset standard, the pulverization results are screened to select the particles that do not meet the preset standard to obtain a screening result, and then the screening result is pulverized a second time. Herein, "similar" means that the difference in particle sizes is within a preset range. The preset standard sets a standardized size range for the particle sizes. By inspecting the pulverization results, it is ensured whether the pulverization results meet the standards, which guarantees the pulverization efficiency, improves the quality of the high-performance red organic pigment, and reduces the possibility of caking and precipitation of the pigment particles of the high-performance red organic pigment in practical applications as much as possible, ensuring the application effect of the high-performance red organic pigment in the optical filter and improving the optical stability of the optical filter.

[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: solid content 52%; the remaining steps are the same as those in Example 1.

[0039] Comparative Example 2

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

[0041] Comparative Example 3

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

[0043] Application Example 1

[0044] Prepare the pigment of Example 1 into a red color paste; the specific method is as follows: 5.7 g of red organic pigment, 4.5 g of grinding resin BM52 (produced by Shanghai Boli'er Chemical Industry), 2.3 g of grinding aid WinSperse 3030 (Vipos New Materials (Weifang) Co., Ltd.), 25.5 g of propylene glycol methyl ether acetate. In a grinding tank, add zirconium balls with a diameter of 0.1 mm, and use a Mickey double planetary dynamic ball mill to mix and disperse for 24 hours to obtain a red color paste.

[0045] Application Example 2

[0046] Use the pigment obtained in Example 2 with the same weight to replace the pigment of Example 1 used in Application Example 1, and the other components, component dosages, and operating processes are the same as those in Application Example 1.

[0047] Application Example 3

[0048] Use the pigment obtained in Example 3 with the same weight to replace the pigment of Example 1 used in Application Example 1, and the other components, component dosages, and operating processes are the same as those in Application Example 1.

[0049] Comparative Application Example 1

[0050] Use the pigment obtained in Comparative Example 1 with the same weight to replace the pigment of Example 1 used in Application Example 1, and the other components, component dosages, and operating processes are the same as those in Application Example 1.

[0051] Comparative Application Example 2

[0052] Use the pigment obtained in Comparative Example 2 with the same weight to replace the pigment of Example 1 used in Application Example 1, and the other components, component dosages, and operating processes are the same as those in Application Example 1.

[0053] Comparative Application Example 3

[0054] Use the pigment obtained in Comparative Example 3 with the same weight to replace the pigment of Example 1 used in Application Example 1, and the other components, component dosages, and operating processes are the same as those in Application Example 1.

[0055] Test Example

[0056] Perform performance tests on the red color pastes prepared in Application Examples 1 - 3 and Comparative Application Examples 1 - 3.

[0057] (1) Use a particle size analyzer 90Plus to test the average particle size and particle size distribution of the red color pastes obtained in the application examples and comparative application examples.

[0058] (2) Let the red color pastes prepared in Application Examples 1 - 3 and Comparative Application Examples 1 - 3 stand at room temperature for 1 day, take samples, and measure the initial viscosity using a viscometer DV2T; let the remaining red color pastes stand at 40 °C for 7 days, take samples, and measure the viscosity after 7 days using a viscometer DV2T.

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

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

[0061] Table 1

[0062]

[0063] As can be seen from the data in Table 1, the average particle size of the red color pastes prepared according to Examples 1-3 of the present invention is smaller, the particle size distribution is narrower, the storage stability is better, and the brightness (Y) and contrast are also significantly higher than those of the comparative application examples. The comparative application examples used the organic pigment prepared in Comparative Example 1. The dispersant used in the preparation process of this organic pigment was BYK-220S, and the performance of the finally prepared red color paste was significantly lower than that in Examples 1-3. In Comparative Application Example 2, the organic pigment prepared in Comparative Example 2 was used. When preparing the hyperdispersant for this organic pigment, the amount of allyl-1,3-sulfonic acid lactone was increased. Allyl-1,3-sulfonic acid lactone contains a strongly polar sulfonic acid group, which helps to enhance the repulsive force between pigment particles, thereby effectively preventing the aggregation of pigment particles; increasing the amount of allyl-1,3-sulfonic acid lactone will instead cause a too thick polar film layer to form on the surface of the pigment particles, resulting in overcoating of the pigment particles by the dispersant, thereby changing the particle morphology, resulting in an increase in particle size or uneven particle size distribution. In addition, too much allyl-1,3-sulfonic acid lactone will cause the hydrophilicity of the surface of some pigment particles to be too strong, which is not conducive to good bonding with the matrix material, resulting in a decrease in dispersion performance. The non-uniform size of the pigment particles and the decrease in dispersibility will both affect the presentation of the pigment color, especially in the optical absorption and reflection characteristics of the pigment, affecting the brightness (Y) and contrast of the filter. Allyl-1,3-sulfonic acid lactone can provide sufficient 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 was used. When preparing the hyperdispersant for this organic pigment, the amount of maleic anhydride was increased. Excessive maleic anhydride will make the surface polarity of the hyperdispersant too strong, resulting in too strong an adsorption effect on the pigment particles, affecting particle size control. In addition, excessive maleic anhydride will also cause the hydrophilic property of the surface 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 the pigment particles will naturally affect the optical properties of the pigment, ultimately reducing the optical performance of the filter. Maleic anhydride mainly plays a role in enhancing adhesion and regulating dispersibility. Excessive addition will also increase the over-hydrophilicity of the pigment surface, thereby affecting stability.

[0064] In the present invention, the hydrophilic groups provided by allyl-1,3-sulfonic acid lactone and maleic anhydride are balanced with the hydrophobicity of styrene, ensuring that the dispersant can effectively wet the surface of the pigment without causing over-hydrophilicity, 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 chain segment to enhance wettability, styrene enhances rigidity and stability, and maleic anhydride regulates the polarity of the dispersant, making it have sufficient affinity to bind to the pigment surface, thereby achieving an ideal dispersion effect.

[0065] Finally, it should be noted that the above embodiments only represent several implementation manners of the present invention, and are not intended to limit the present invention. For those of ordinary skill in the art, any modifications, equivalent replacements, improvements, etc. made without departing from the concept of the present invention should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A high-performance red organic pigment, characterized in that, It includes the following preparation steps: S1. Disperse crude Pigment Red 122, a hyperdispersant, a silane coupling agent, a chelating agent, and isopropanol in a high-speed disperser to obtain a pigment dispersion; S2. Transfer the pigment dispersion to a closed planetary ball mill, add ball milling media, and perform wet grinding to obtain a ball-milled slurry; S3. Dry and crush the ball-milled slurry to obtain a high-performance red organic pigment; The specific preparation method of the hyperdispersant in step S1 is as follows: Add allyl-1,3-sultone, butyl acrylate, styrene, and maleic anhydride monomers to ethylene glycol monomethyl ether, heat to 70-80 °C, add an initiator and a chain transfer agent, stir and react for 4-6 h. After the reaction is completed, remove the solvent by vacuum distillation, and dry to obtain the hyperdispersant; In the preparation process of the hyperdispersant, the molar ratio of allyl-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); In the preparation process of the hyperdispersant, the initiator is azobisisobutyronitrile, and its dosage is 1-2% of the total mass of the monomers; in the preparation process of the hyperdispersant, the chain transfer agent is n-butyl mercaptan, and its dosage is 0.1-1% of the total mass of the monomers.

2. The high-performance red organic pigment according to claim 1, wherein In step S1, the specific amounts of each component by weight are: 150-200 parts of crude Pigment Red 122, 3-8 parts of the hyperdispersant, 1-5 parts of the silane coupling agent, 1-5 parts of the chelating agent, and 200-250 parts of isopropanol.

3. The high-performance red organic pigment according to claim 1, characterized in that, The silane coupling agent is γ-glycidoxypropyltrimethoxysilane; the chelating agent is EDTA.

4. The high-performance red organic pigment according to claim 1, wherein The ball milling media are zirconia beads with a diameter of 0.5-1 mm; the rotation speed of the ball mill is 800-1000 revolutions / min, the grinding time is 10-12 h, and the grinding temperature is below 40 °C.

5. The high-performance red organic pigment according to claim 1, characterized in that, During the stirring reaction, intelligent monitoring is carried out on the reaction process, including: monitoring reaction information during the reaction process to obtain the current reaction phenomenon acquisition information; combining the current reaction phenomenon acquisition information with the reaction phenomenon acquisition information of the previous moment for change analysis to determine whether the reaction phenomenon acquisition information has changed, and obtaining the first change analysis result; according to the first change analysis result, when the reaction phenomenon acquisition information changes, the reaction process continues and the reaction is not completed, and continue to obtain and analyze the reaction phenomenon acquisition information. When the reaction phenomenon acquisition information does not change, obtain the reaction phenomenon acquisition information of the next moment, and then perform change analysis on the reaction phenomenon acquisition information of the next moment and the current reaction phenomenon acquisition information. When there is a change between the reaction phenomenon acquisition information of the next moment and the current reaction phenomenon acquisition information, the reaction process continues and the reaction is not completed, and continue to obtain and analyze the reaction phenomenon acquisition information; when there is no change between the reaction phenomenon acquisition information of the next moment and the current reaction phenomenon acquisition information, the reaction process has stopped and the reaction is completed.

6. The high-performance red organic pigment according to claim 1, characterized in that, The ball-milled slurry is dried and then pulverized, and the pulverization result is also inspected, including: identifying particles for the pulverization result, collecting particle size information of the pulverization result to obtain pulverization result detection data; performing preliminary analysis based on the pulverization result detection data to determine whether the particle sizes are similar, obtaining a preliminary analysis result; when the preliminary analysis result is that the particle sizes are similar, calculating the average value for the pulverization result detection data, and judging whether the average value calculation result meets a preset standard according to the average value calculation result to obtain a first judgment result. When the first judgment result is that the average value calculation result meets the preset standard, a high-performance red organic pigment is obtained. When the first judgment result is that the average value calculation result does not meet the preset standard, the pulverization result is pulverized again; when the preliminary analysis result is that the particle sizes are not similar, performing extreme value analysis on the pulverization result detection data, obtaining the maximum particle size, and judging whether it meets the preset standard according to the maximum particle size to obtain a second judgment result. When the second judgment result is that the maximum particle size meets the preset standard, a high-performance red organic pigment is obtained. When the second judgment result is that the maximum particle size does not meet the preset standard, screening the pulverization result to screen out the particles that do not meet the preset standard to obtain a screening result, and then pulverizing the screening result again.

7. Application of a high-performance red organic pigment as described in any one of claims 1-6 in a filter.

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