TW200808916A - Method for dispersing pigment particles - Google Patents

Abstract

A method for dispersing pigment particles comprises adding a pigment and a copolymer dispersing agent to a solvent to form a mixture, placing the mixture to a dispersing tank, introducing supercritical carbon dioxide, and increasing pressure and temperature inner the tank and maintaining in predicted pressure and temperature simultaneously. After maintaining above pressure and temperature for a predicted time, the mixture is released rapidly to ambient pressure and transferred to a receive tank. The concentration of the pigment is 0.1-2 wt% relative to the mixture, and the concentration of the copolymer dispersing agent is 20-60 wt% relative to the pigment.

Description

200808916 IX. DESCRIPTION OF THE INVENTION: 1. Field of the Invention The present invention relates to a formulation and method for dispersing pigment microparticles. [Prior Art] Conventional pigments are used to manufacture color liquid crystals (c〇1〇) r-LCD) One of the main raw materials for the display of pigment-dispersed color photoresists, whose function is to determine the color and color of the photoresist. For industrial applications, the average particle size of the pigment particles needs to be in the range of 100 to 200 nm. The use of smaller pigment particles increases the color strength and contrast of the pigment, as well as the light transmittance of the color liquid crystal display to enhance the quality of the color liquid crystal display. Conventional methods for dispersing pigment microparticles in a liquid, including a roll mill method, a ball mill method, a bead mm method, a vibrating gold grinding method, a homogenization method, and a heterodispersion method. Machines, etc., but these methods have the disadvantages of requiring a long process time and contamination of the grinding media. In order to overcome the disadvantages of the prior art, U.S. Patent No. 5,921,478 discloses a method of dispersing fine carbon black particles into pure water by supercritical dispersion. In this method, with the help of supercritical carbon dioxide, pure water #2wt%^ black powder through the pressure and pressure of the step of heating 'from normal temperature, 〇 〇 〇 Mpa (he Pascal)', 333 K . Then, the mixture was moved to an explosion pulverization tank (eXPl〇Si〇nCmShingtank) to produce carbon black particles which were uniformly dispersed. Although this method can uniformly disperse carbon black particles in pure water, it can only obtain dispersed particles having a particle size of less than 5 μm, which does not meet the requirements of industrial applications. A similar approach has been proposed to disperse ultrafine particles of pigment red 177 (red Π7), green 36 (green 36) and blue 15:6 (blue 15:6) in propylene glycol oxime ether acetate (Propylene Glycol). Monomethyl

Ether Acetate, PGMEA) t (W. T. Cheng et al, Dispersion of organic pigments using supercritical carbon dioxide, J. CW/ozW plus ^ 270 (2004 106_112)). However, it has been conventionally known that increasing the pigment concentration causes an increase in the particle size of the pigment, so that the method can only obtain a pigment concentration of 〇 2 wt Q / ❻. Since this low concentration of pigment increases the cost of industrial use, the dispersed pigment obtained by this method is not suitable for industrial applications. It has become an important matter to study a pigment dispersion method which can extract the concentration of the pigment in the solvent and has an industrially applicable particle size. SUMMARY OF THE INVENTION In order to overcome the difficulties and problems encountered by the prior art, the object of the present invention P is to provide a supercritical dioxide surface for the formulation of pigment flakes, and to refine the pigment particles. (4) Disperse in the solvent. A pigment composition according to the present invention, which is added to a solvent to disperse the particles contained in the towel in a nano-particle, comprising: a pigment particle; and 200808916 with a pro- _ The pigment is concentrated relative to the pigment composition with a solubility of 0.1 to 2 wt% of 20 to 60 wt% of the total weight of the agent and the concentration of the copolymer dispersion for the pigment is determined according to the present invention. Contains: a method of dispersing pigment particles, the steps thereof

() adding a pigment to a copolymer with a pro-pigmentation base and a solvent-dispersing agent to a f-agent to form a mixture, and placing the mixture in a sub-policy 'The concentration of the pigment relative to the mixture is • 1, 2 wt / 〇 ' and the concentration of the side copolymer dispersant relative to the pigment is 20 to 60 wt %; (B) Leading supercritical in the heart of the tank Carbon dioxide, the pressure in the dispersion tank is raised and maintained at not less than 1 〇Μ ρ & while the temperature in the dispersion tank is raised and maintained at 320 to 400 K; (C) the aged material is maintained under the condition of step (8). After ~60 minutes, 睪U睪[to atmospheric pressure (atm()_eric to (10) position) and move to a receiving slot. Dip, according to the method of the current financing method 4, the difficult particles can be dispersed in the solvent 100~200nm, γ sentence size uniform, and the concentration can reach ο"~2 ^ It is suitable for the application of the health industry = t ' and can be about 5 times more than the pigment obtained by the method disclosed by η' et al. The invention is further illustrated by the following detailed description and examples, which are not intended to limit the invention. A person skilled in the art can make some modifications and modifications without departing from the scope of the invention. [Embodiment] A diagram showing an example of a device for carrying out the method of dispersing pigment particles of the present invention is shown. According to the present invention, the pigment fine particles are first dispersed by adding a pigment and a copolymer dispersant having a pigment-affinity group and a solvent-soluble group to a solvent to form a mixture, which is then introduced into a dispersion tank 10 towel. Next, supercritical carbon dioxide is injected from the storage tank 12 into the dispersion = 10 . The supercritical carbon dioxide can be filtered by the filter 14 to remove impurities therein, and the liquid pump 16 is injected into the dispersion tank (7) by internal pressure if11G to inject supercritical carbon dioxide, so that the dispersion tank 10 is raised to a low level. In 1GMPa, more preferably lG~4〇MPa, and maintain this test, the force in the other 10 slots of the dispersion tank can be revealed by a pressure gauge 20, in the case of supercritical carbon dioxide suspension _ At the same time, on the κ, and lose the name to order heating ~ make it up to 320 ~ 400 κ, more preferably 328 ~ 350 to force this blood. The dispersion tank 10 can be heated by a heater 18 and the temperature is measured by a thermometer 22. The content of the pigment, the copolymer formed by the copolymerization of the pigment-affinity group and the solvent-soluble group, is called the holding time between the above-mentioned temperature and the force. Thereby, 8 200808916, the pro-pigment group of the copolymer dispersant is introduced into the pigment particles, and the lyophilic group is placed in the solvent so that the pigment particles are coated with the copolymer dispersant to be stably dispersed in the solvent. Finally, the valve 间 between the dispersion tank 1〇 and the receiving tank 24 is opened, and the pigment solution in the dispersion tank 1G is quickly released to a large pressure (normal temperature and normal pressure), and the pigment dispersion liquid is introduced into the receiving tank 24. Thereby, the pigment fine particles uniformly dispersed in the solvent can be obtained, and the stomach has an average particle diameter of 100 to 200 nm, and has good stability and can be maintained for a long time. The aforementioned stagnation time is not particularly limited in the present invention, but it is preferably from 10 to 60 minutes, more preferably from 20 to 40 minutes, based on the dispersion effect and production efficiency of the pigment particles. The pigment to which the method of the present invention can be applied is not particularly limited, and examples thereof include a phthalocyanine-based pigment (for example, Cu phthalocyanine (Blue 15: 6)), and copper phthalocyanine phthalocyanine (p〇iychl). 〇r〇br〇m〇Cu-Phthalocyanine, Green 36), anthracene derivative pigment (for example, 4, 4'-diamino-1,1'-diindole (4,4,-gamma 11^11〇) -1,1,__1^11 is called 1^11〇野1, Red 177) and 1-phenylhydrazineamino hydroxy hydrazine (Benz〇ylati〇n _ ^leg 1110 ice hydroxyanthraquinone, Red 89), Polycarbocyclic anthraquinone (Red 168), 并 并 比 比 二 二 颜料 颜料 (Diketopyrrolopyrrole, Red 254), Isoindoline (Yeindoline, Yeii〇w 139) and dioxazine pigments 0\ commits 1 shape, Violet 23), etc., but is not limited to this. The concentration of the above pigment relative to the mixture is preferably from 0.1 to 2% by weight, more preferably from 0.5 to 1.5% by weight. The above-mentioned copolymer dispersing agent can be used in the present invention as long as any of the conventional copolymer dispersing agents having both a pigment-based group and a solvent-soluble group, and is not particularly limited in the present invention. For example, Amine modified polyester (commercially available products such as Hypermer LP4, ICI, Americas Inc., US A), polyamine/polyamine copolymer (p〇iyester/p〇iyamine copolymer) (Business on products such as Hypermer PS3, ICI, Americas

Inc" USA), polyetheramine (P〇ly〇Xyaijyiene amine) (commercial products such as Hypermer KD2, ICI, Americas Inc., USA), amine modified oligomers (Amine modified ol〇g〇mer) (commercial products, such as

Hypermer 1070, ICI, Americas Inc., USA), Acrylate_Cop〇lymer with pigment affmic groups (commercial products such as Disperbyk-2050, BYK, Germany), and pigment-based Copolymer (cop〇lymer with pigment

Afflnic groups) (commercial products such as Disperbyk-2150, BYK

Germany), but not limited to this. The amount of the copolymer dispersant to be added is not particularly limited in the present invention, but in order to obtain a preferable dispersion stability of the pigment particles, when the mass of the pigment is 1, the amount thereof is preferably from 2 to 6 〇wt. %, more preferably 30~50 wt%. The foregoing solvent can be used in the present invention as long as it is any conventionally dispersible pigment particles. Examples which may be mentioned herein include pr〇pylene Glycol Monomethyl Ether Acetate (PGMEA), cyclohexanone and ethyl 3-ethoxypropionate (Ethyl-3-Ethoxypropi〇). Nate, EEP), etc., but not limited to this. In order to make the pigment more easily dispersed in the solvent, the foregoing step of adding the pigment and the copolymer dispersant to the solvent to form a mixture may further comprise a step of pre-dispersing the pigment particles with the mixture, as long as it is 200808916 It is known that any method which can be used for permanently or temporarily dispersing pigment particles in a solvent can be applied to the present invention, for example, ultrasonic shock method, ball mill method, bead mill method, oscillatory grinding method, homogenization Law, sand disperser, etc., but not limited to this. In addition, in order to have a better dispersing effect of the pigment in the solvent and enhance the stability of the dispersed pigment microparticles in the solvent, the pigment, the mixture of the disperse pigment base and the solvent-soluble copolymer dispersant and the solution are formed. , can further add a pro-carbon dioxide surfactant (C02-philic

Surfactants). The example of the carbon dioxide surfactant as the present invention includes, but is not limited to, fluorinated hydrocarbons, or fluorinated surfactants (f [uorosurfactant]. As an example of the aforementioned fluorinated surfactant, for example, a chemical formula represented by F(CF2CF2)nCH2CH2〇(CH2CH2〇)m, wherein η-1 〜7 ' m=(M5 (for example, Zonyl FS0100 and Zonyl FSN-100) ), or perfluorobutane sulfonate (PFBS) (for example, 3MTM-N〇Vec-FC-4432 and 3MTM_N〇vec_FCM43〇). The amount of the carbon dioxide surfactant added in the present invention is rich in the present There is no particular limitation 彳 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 昼 颜料 颜料 颜料In the method, the supercritical carbon dioxide can rapidly infiltrate the aggregated pigment U-seam fine-slit towel, and then the aggregated pigment is grounded into fine particles through rapid pressure release. The stability of the dispersed pigment particles is ^^ ^巾' is achieved by using a pro-pigment base and a solvophilic group. After treatment by the method of the present invention, by using supercritical 200808916 carbon dioxide, the average particle size can be obtained at 100~2〇〇nm. Pigment particles between. In addition, the invention also discloses A pigment composition which, when added to a solvent, is capable of dispersing pigment microparticles contained therein in the solvent, which comprises a pigment microparticle 'and a pigment-affinity and a solvophilic group (Sol vent-affinity) copolymer dispersant. The aforementioned pigment is not particularly limited in the present invention, for example, an indigo pigment (for example, Cu-Phthalocyanine, Blue • 15:6), Polychlorine phthalocyanine (Polychloro bromo)

Cu-Phthalocyanine, Green 36), 蒽g-kun derivative pigment (for example, 4, 4'-diamino-1, Γ-dimmo-l, Γ-dianthraquinonyl, Red 177) And Benzoylation l_amino-4-hydroxyanthraquinone (Red 89), Polycarbocyclic anthraquinone (Red 168), 吼嘻 and σ Ketone pigment (Diketopyrrolopyrrole, Red 254), different. Isoindoline (Yelindoline, Yellow 139) and dioxazine pigment (Dioxazine, Xin Violet 23), etc., but not limited to this. Wherein the concentration of the pigment relative to the total weight of the pigment composition and the solvent is 0.2% by weight, and the concentration of the copolymer dispersant relative to the pigment is from 2 Å to 60% by weight. The copolymer dispersant described above can be used in the present invention as long as any conventional copolymer dispersant having both a pigment-based group and a solvent-soluble group, and is not particularly limited in the present invention. For example, Amine modified polyester (commercial product such as Hypermer LP4, ICI, Americas Inc. USA), polyester/polyamine copolymer (?0匕咖6〇17&1^ 1^ 12 200808916 copolymer) (commercial products such as Hypermer PS3, ICI, Americas Inc. USA), Polyoxyaljylene amine (commercial products such as Hypermer KD2, ICI, Americas Inc. USA), amine modification Amine modified ologomer (commercial products such as Hypermer 1070, ICI, Americas Inc. USA), Acrylate-Copolymer with pigment affmic groups (commercial products) , for example, Disperbyk-2050, BYK,

Germany), and Cop〇lymer wkh pigment affinic groups (commercial products such as Disperbyk_2150, BYK, Germany), but are not limited thereto. The amount of the copolymer dispersant to be added is not particularly limited in the present invention, but in order to obtain a preferable pigment particle dispersion stability effect, when the mass of the pigment is 1, the amount thereof is preferably from 20 to 60% by weight. More preferably 30 to 50 wt%. The foregoing solvent can be used in the present invention as long as it is any conventionally dispersible pigment particles. Here, an example may include propylene glycol methyl ether acetate (pr〇pylene Glyc〇1 M〇nomethy) [Ether

Acetate, PGMEA), cyclohexanone and ethyl 3-ethoxypropionate (Ethyl propionate, EEP), etc., but are not limited thereto. In order to provide a better dispersing effect of the pigment in the solvent and to enhance the stability of the dispersed pigment particles in a solvent, the pigment composition of the present invention may further comprise a CCVphilic surfactant. As an example of the carbon dioxide surfactant in the present invention, it includes, but is not limited to, fluorinated hydrocarbons, or fluorosurfactants. As an example of the aforementioned fluorinated interface 13 200808916 active agent, for example, has the chemical formula shown by F(CF2CF2)nCH2CH2〇(CH2CH2〇)m, where n=l~7, m=0-15 (for example, z〇nyl Fs 〇1〇〇 with Zonyl FSN-100), or perflu〇r〇butane sulfonate (PFBS) (eg 3MTM_N〇ve (> FC_4432 and 3M - No vec-FC-443 0). The content of the δ-carbon surfactant in the pigment composition of the present invention is preferably from 0.5 to 3 wt %, more preferably from 5 to 2 wt %, based on the mass of the pigment. The invention has been disclosed in the above preferred embodiments. However, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope is defined by the scope of the appended patent application. Example 1 Adding pigment particles red 177 (Ciba Special Chemicals Co., Hong Kong) to solvent PGMEA (Aldrich) under normal temperature and pressure without using supercritical carbon dioxide , USA) to prepare test samples, the concentration of redl77 in the sample is solid At 1 wt%, then a different percentage of dispersant (Hypermer PS3, ICI Americas Inc, USA) was added to the test sample (based on the weight of the pigment). The configured sample was ultrasonically shaken for 2 hours, followed by Measured by Dynamic Laser-Scattering Particle-Analyzer, Model: LSR, Protein Solutions Ltd US A), the average particle size reading was corrected for two standard particle size samples (Latex Microphere Suspensions 5016A) , average particle size 160nm, and NanophereTM Size Standard 3200A, average 14 200808916

Duke Sdemifk Cg, usa), all experiments were at least two-person, and the average particle size of the pigment particles was about ± 5% reproducible. After the mean size) ° e, after resting, the average particle size is taken every other time. The measured particle size as a function of standing time is shown in the second graph. Referring to the second figure, it can be seen that the sample without adding a dispersant (blank test group 1' has a minimum initial average particle size (about 26 Gnm), but after three days, it suddenly increases _ i m, and since then, the ultrasonic wave is apparent. The shock cover can temporarily break the material in the pigment particle solvent, but since there is no dispersion stabilization effect, the dispersed pigment particles will reaggregate. Adding more than 20 Wt% of the dispersant sample, the pigment after standing The average particle size of the particle dispersion is significantly smaller than that of the formula. It is thus stated that the added dispersant can effectively provide steric hindrance, maintain the dispersion state of the pigment particles, and avoid re-aggregation. The configuration and procedure of the test are the same as those in the first embodiment, but the test sample of the first embodiment is further added with 〇, i, 3 wt% of a carbon dioxide surfactant (Zonyl FSO-100, du Pont de Nemours and Co" USA) Next, the test sample was injected into a dispersion tank and treated with supercritical carbon dioxide. The treatment conditions were 328.2 K, 20·0 MPa, and the stagnation time was 20 minutes. Thereafter, the pressure was quickly released to atmospheric pressure, and the sample was introduced. In the trough, the average particle size of each test sample is also analyzed, and the results are shown in Table 〇 From the results obtained in Table 1, it can be known that only 40 wt% is added. 15 200808916

In the case of Hypermer PS3, the average particle diameter of the fraction treated by supercritical carbon dioxide was 25 Gnm' * The initial average particle diameter of the dispersion which was not treated with supercritical carbon dioxide was 298 nm. It is thus apparent that the help of the supercritical fluid does have the effect of dispersing (iv) age. Further, by using a composite dispersant (Hypermer PS3 + Z〇nyI FS0·1 〇〇), the average particle diameter of the dispersion can be further effectively reduced. Among them, # Hy tear is

When Wt /〇 and Zonyl FSO-100 is 1 wt 〇/0, the average grain size of the dispersion can be reduced to 201 nm. The third embodiment of the experimental steps and conditions are the same as the second embodiment, the group of the pigment mixture: red 177. Hypermer PS3: Zonyl FSO-loo: PGMEA = .001g.98 59g 'and the high pressure stagnation temperature and pressure are respectively κ with 30.0 MPa 'but the stagnation time is 5 to 6 〇 minutes. The same ^ was used for the average particle (four) analysis of each test sample, and the resulting four graphs were obtained. ^ 八^+ 1 The fourth stop in the fourth target can be significantly improved by 5 to 20 minutes: Month: Fruit' and no significant effect after more than 2 minutes. This result shows that the process of penetrating the aggregate voids of the pigment particles is carried out in about the same manner as in Example 4, 200808916, and the results are shown in the fifth and second tables. See Figure 5, which shows that the higher stagnation temperature favors the dispersion of pigment particles. At high pressure T, when the temperature is greater than 338.2 K, the temperature effect is not significant. On the other hand, at a fixed temperature, the average particle size decreases with increasing pressure, but when it exceeds 10.0 MPa, the curve tends to be gentle. Further, the results obtained in Table 2 show that the average particle size of the dispersion obtained under the conditions of 348·2 Κ and 35 〇 Mpa can be as small as 145 nm. Example 5 Four samples were prepared here, and the dispersion conditions were as follows: Sample 1 · red 177 : PGMEA = lg : 99 g, without adding a dispersing agent, the ultrasonic wave was shaken at room temperature and pressure for 2 hours, and then allowed to stand for one day, the average particle 530nm 〇 sample 2 : red 177 : Hypermer PS3 · · Zonyl FSO_100 : PGMEA = lg: 0.4g: O.Oig: 98.59g, ie 40 wt % Hypermer PS3 + 1 wt% Z〇nylFSO_l〇〇, under normal temperature and pressure The ultrasonic wave oscillates for 2 hours, and the average particle size is 360 nm. Water port 3 ♦ Composition of the same sample 2 (40 wt % Hypermer PS3 + 1 wt %

Zonyi FSO-lOO) 'Supercritical carbon dioxide dispersion, stagnation temperature and pressure are 318.2K and 5.0 MPa, stagnation time 20 minutes, average particle size 332nm 〇本κ口4 · Composition same as sample 2 (40 wt % Hypermer PS3 + 1 wt % Zonyl FSO-100), supercritical carbon dioxide dispersion, stagnation temperature and pressure are 348.2K and 35.0]^0^, stagnation time 20 minutes, average particle size 145nm 〇17 200808916 Each sample before analysis After diluting 500 times with PGMEA, the light transmittance was measured by an ultraviolet/visible spectrometer (JASCO V-530, Japan), and the results obtained by the analysis are shown in the sixth graph. Referring to the sixth figure, it can be seen from the figure that the light transmittances of the samples 1 to 4 at the wavelength of the light source of 620 nm are 87.6%, 91.3%, 92.0% and 95.8%, respectively. This shows that the pigment particle dispersion having a smaller particle size does have a higher light transmittance.

18 200808916 Table 1 Dispersion test results of different dispersant composition (Wt%) at room temperature and pressure under carbon dioxide treatment b-j^gLPS3Z〇nyl FSQ-l〇〇?i^j^r-particle size reduction (g /g pigment) (g/g pigment) (nm) (nm) 250 265 201 210 -48 -70 -159 -153 2 1 0.4(403⁄4—~0~(^ ^-- 〇(0 %) 0.03 (3 %) 335 4 0.4 (40 %) 0.01 (1 %) 360 J).4 (40 %) 0,03 (3 %) 363 匕 Dispersion procedure for ultrasonic vibration at room temperature and pressure for two hours and two carbon dispersion Procedure, stagnation temperature and house strength are 328.2 K and 20.0, and high pressure stagnation time is 2 〇 minutes. 19 200808916 Table 2 Dispersion test results of different stagnation temperatures and pressures _ Temperature average particle size standard deviation (MPa) (K) (nm) (nm) 14 5 318.2 15 10 318.2 16 20 318.2 17 30 318.2 18 35 318.2 19 5 328.2 20 10 328.2 21 20 328.2 22 30 328.2 23 35 328.2 24 5 338.2 25 10 338.2 26 20 338.2 27 35 338.2 28 5 348.2 29 10 348.2 30 20 348.2 31 30 348.2 32 35 348.2 2555020072990135875 35322030886 8 6536444 3 2 2 2 2 3 2 2 11 11 2 11 1- 1- 2 11 I- 1i 1

50J70.2.632.241.5.7.8.5.7.83· 7-200^233113122273074 c 11 11 11 11 11 11 11 11 IX

The charging rate of carbon dioxide was 2.0 cm3/min and the holding time was 20 min throughout all the runs.

20 200808916 [Simplified description of the drawings] The first figure is a schematic diagram of an embodiment of a device for performing the dispersion method of the present invention; the second figure is a dispersion of red 177 pigment in a seven-layer configuration of a dispersant (Hypermer PS3) of different compositions. The change of the average particle size; the second picture shows the average particle size of the red 177 pigment dispersion in different concentrations of the dispersant (Hypermer pS3 and z〇nyl FSO-100) in the configuration of normal temperature and normal pressure without carbon dioxide. The change of the diameter; the fourth picture shows the change of the average particle size of the red 177 pigment dispersion under different high pressure stagnation time; the fifth picture shows the change of the average particle size of the redl77 pigment dispersion under different stagnation temperatures and pressures. The situation; and the sixth figure is the change in light transmittance of the red Π7 pigment dispersion sample under different preparation conditions. [Main component symbol description] 10 dispersion tank _ U storage tank Μ filter Μ liquid pump 8 heater 20 pressure gauge 22 thermometer 24 receiving tank

Claims (1)

200808916 X. Patent application scope: 1 - a seed surface composition, which can be added to the solvent to disperse the pigment particles contained therein in the solvent, which comprises: a pigment particle; and a copolymer component 'There is a ^_&amp; (pigment_affinity) and the pro- </ br> with respect to the composition and the concentration of the solution is 0.1 2 wt / 〇 ' and the concentration of the copolymer dispersant relative to the pigment is 20 ~ 60 wt %. 2. The pigment composition according to item i of the patent application scope, wherein the pigment is pigment, multi-aerobic copper phthalocyanine, anthraquinone derivative, (four) onion, quinone derivative, 吼 并 鳞 鳞 酉It is a group of pigments and different tenths of arsenic---oxazine pigments. The pigment composition according to Item 1, wherein the copolymer knife is selected from the group consisting of an amine modified polyamine, an amine modified W 曰 polyamine copolymer, and a polyether JL relative. A group consisting of a pigment-based acrylate copolymer and a group-based copolymer. • The sounds mentioned in item 1 of the patent scope are selected from the group consisting of propylene glycol methyl ether acetate and the group of esters.己己_, and 3-ethoxypropionic acid B. 5. In the scope of the patent scope of the third aspect of the invention, further inclusion of a mixture of _ 枓 枓 枓 枓 ,, wherein the pigment group - as claimed in the scope of the third Sex agent. The carbonaceous surfactant is a ruthenium-containing hydrogen-depleted di-wet-milk 22 200808916. The pigment composition as described in claim 6, wherein the fluorine-containing stone antihydrogen compound has a F(CF2CF2) such as F(CF2CF2) a chemical formula of nCH2CH2〇(CH2CH2〇)m, wherein n=l~7, 3=045. 8. The pigment composition of claim 6, wherein the fluorine-containing anti-mouse δ system is perfluorobutyl acid PFBS) 〇9· the pigment according to claim 5 of the patent scope The composition wherein the content of the p-oxide anti-interfacial agent in the pigment composition is 0.5 to 3 wt% when the mass of the pigment is 1. 10. A method of dispersing pigment particles, the method comprising the steps of: (A) adding a pigment composition as described in claim ii to a troche to form a mixture, and placing the mixture (B) The enthalpy scattering guides the supercritical carbon dioxide, so that the pressure in the dispersion tank rises and is maintained at not less than 10 MPa, and the temperature in the dispersion tank is raised and maintained at 320 to 400 K; After the mixture is maintained under the condition of step (B) for 1 〇 to 6 〇 minutes, it is rapidly released to atmospheric pressure and moved to a receiving tank; wherein the concentration of the pigment relative to the mixture is 4 〇1~2wt%, and the concentration of the copolymer dispersant relative to the red pigment is 2〇~6〇(10)% 〇11. The method of claim 1, wherein the pigment is selected from the group consisting of Green group 4, I (four) woven phthalocyanine, S brib bio-pigment, 23 200808916 fused ring hydrazine derivatives, pyrrolopyrroledione pigments, isophthalocyanine pigments and dioxazine pigments composed of ethnic groups. 12. The method of claim n, wherein the pigment is a red 177 pigment. 13. The method of claim 1, wherein the copolymer dispersant is selected from the group consisting of an amine modified polyester, a polyester/polyamine copolymer, a polyether amine, and an amine modified oligomer. a group consisting of a pigment-based acrylate copolymer and a pro-pigment-based copolymer. 14. The method of claim 10, wherein the solvent is selected from the group consisting of propylene glycol methyl ketone ketone cyclohexanone and ethoxy acetate. 15. The method of claim 2, wherein the step (a) further comprises the step of pre-dispersing the mixture. For example, the method of performing the pre-dispersion step of the towel is the ultrasonic shock method, the ball milling method, the sanding method, the vibration grinding method, and the homogenization. The method is treated with a sand disperser. 17. The method of claim 10, wherein the step of the step (4) further comprises a C- 2 - philic surfactant. 18. The method of claim 17, wherein the carbon surfactant is a fluorine-containing hydrocarbon: a hydrocarbon: 〇 19. The green as described in claim 4, the towel The gas-containing carbon 24 200808916 Hydrogen compound has a chemical formula as shown by F(CF2CF2)nCH2CH20(CH2CH20)m where n=l~7, m=(M5. 20· as described in item 8 of the patent application scope The method of the present invention, wherein the fluorine-containing hydrocarbon is a perfluorobutane sulfonate (PFBS). The method of claim 17, wherein the carbon dioxide surfactant is in the mixture. The content, the mass of the pigment is 18, which is 0.5 to 3 wt%.