TW200413482A - Method for manufacturing process pigment composition and process pigment composition thus obtained - Google Patents

Abstract

This invention provides a method for manufacturing a process pigment composition, by treating the aqueous suspension of an organic pigment with the water insoluble oligomeric resin that has the fluidity at room temperature. The process pigment composition thus obtained possesses good transferability of pigment from water phase to resin phase. The pigment in said composition has high crystal stability after phase transfer, and excellent resolublity after drying. This invention also provides a process pigment composition manufactured by the method.

Description

200413482 V. Description of the invention (1) [Technical Field to which the Institute belongs] The present invention relates to raw materials for paints, inks, plastics, printing and dyeing, color toners, and other color materials. A method for producing a pigment composition and a processed pigment composition obtained by the method. [Prior art] In general, when pigments are used as color materials for various industrial materials, moisture-containing wet cake pigments are often used for inks, plastics, and colorants. Wet cake pigments are disclosed in National Patent Publication No. 7-1 8 8 5 7 5 and National Patent Publication No. 8-6 0 6 8 through resins with a molecular weight ranging from tens of thousands to 100,000 and solvents containing solvents. Processing pigments for lacquer processing are common methods. [Summary of the Invention] As a pigment of a color material, it is desired that the pigment has the characteristics of non-agglomerating, stable and easy to handle. In order to solve this problem, a finely dispersed pigment is treated with a dispersion stabilizer such as a resin to suppress the mutual aggregation of the pigments. ^ However, when the aqueous suspension of the wet cake pigment is in a general resin, and the phase inversion treatment is performed for the phase inversion to the resin phase, in order to improve the fluidity and the phase inversion effect, it is indispensable to add a solvent to the resin, and then worry about Issues such as the necessity of solid component management after treatment and the impact of volatile solvents on the operating environment. In addition, in order to sufficiently volatilize the solvent after the treatment, there is a problem that it takes a long time to re-dissolve in the solvent such as ink formation.

314353.ptd Page 10 200413482 V. Description of the invention (2) In particular, in the treatment of a single solvent and the treatment of a resin with a high solvent content, problems such as the crystals becoming larger after the pigment phase is converted to the resin phase also occur. The present invention has been made in view of these problems, and provides that the pigment can be efficiently converted from the water phase to the resin phase after the concentration of the solvent is lower than that of the conventional solvent, especially when no solvent is preferred. A method for producing a processed pigment composition having excellent crystallization stability and excellent re-solubility after drying, and a processed pigment composition using the same. Here, after intensive research by the inventors of the present case, it was found that the use of a water-insoluble resin in the field of flowable oligomers at room temperature to treat aqueous suspensions can improve the phase inversion of the pigment from the aqueous phase to the resin phase. 2. A method for producing a processed pigment composition having high crystal stability after phase inversion and excellent re-solubility after drying, and a processed pigment composition obtainable by the manufacturing method, thus completing the present invention. That is, the present invention relates to inventions 1 to 7 described below. Invention 1 is a method for manufacturing a processed pigment composition, which is characterized in that an aqueous suspension of an organic pigment is treated with a water-insoluble resin having a flowable molecular weight of 2000 to 1000 at normal temperature. Invention 2 is a method for manufacturing a processed pigment composition as described in Invention 1, which is characterized by a molecular weight of a water-insoluble resin of 200 to 2000. Invention 3 is a method for producing a processed pigment composition such as Invention 1 or Invention 2, which is characterized in that the water-insoluble resin is one having cross-linking reactivity. Invention 4 is a method for producing a processed pigment composition according to any one of Inventions 1 to 3, characterized in that the water-insoluble resin is radically crosslinkable

314353.ptd Page 11 200413482. V. Description of Invention (3). Invention 5 is a method for producing a processed pigment composition according to any one of Inventions 1 to 4, and is characterized in that the water-insoluble resin is one having ultraviolet crosslinkability. Invention 6 is a method for producing a processed pigment composition according to any one of Inventions 1 to 5, and is characterized in that it is based on 100 parts by weight of pigments in an aqueous suspension of organic pigments, and water-insoluble resin 5 Those with a content of less than or equal to 0 parts by weight are treated in a stirring mixing device. ^ Invention 7 is a processed pigment composition produced by the method for manufacturing a processed pigment composition of Inventions 1 to 6. [Embodiment] The aqueous suspension of an organic pigment used in the present invention refers to a wet cake pigment obtained by filtering and washing an unrefined aqueous suspension after synthesis, and may also be used in the wet cake pigment. Add water to make it an aqueous suspension. In addition, the aqueous suspension of the organic pigment used in the present invention may be added with a surface treatment agent, a surfactant, a dispersant, a pigment derivative, or the like in order to make it finer during synthesis. In addition, the concentration of the aqueous suspension of the organic pigment used in the present invention varies depending on the type of the organic pigment, and is generally from 10% by weight to 100% by weight, and from 25% by weight to 50%. It is preferable that the content is not more than% by weight. This range is determined based on the amount of water required to efficiently transfer the phase from the water phase to the resin phase when the pigment is processed. The organic pigment used in the present invention can be exemplified by pigments dyed with Shen Dian colorants such as triallyl oxane-based and Gutton-based; soluble azo pigment

314353.ptd Page 12 200413482 V. Description of the invention (4) Materials; azo pigments such as insoluble azo pigments and condensed azo pigments; phthalocyanine pigments; condensed polycyclic pigments, etc. The above-mentioned pigments used for dyeing precipitation pigments can be exemplified by: Pigment Yellow (hereinafter referred to as PY: Pigment Yellow) 18, PY100, PY104, Pigment Orange 3 9 (hereinafter referred to as P0: Pigment or Ange) 3 9 , Pigment Red (hereinafter referred to as PR: Pingment Ped) 81, PR83, PR90, PR169, PR172, PR 173, PR 174, PR 193, Pigment Violet (hereinafter referred to as PV: Pigment VioletM, PV2, PV3, PV4, PV12, PV27, PV39, Pigment Blue (hereinafter referred to as PB: Pigment blue), PB2, PB14, PBb2, Pigment Green (hereinafter referred to as PG: Pigment Green M, PG2, PG3, PG4, PG45, PBr3, etc.) Examples of pigments are: soluble azo pigments such as PR53, PR50, PR49, PR57: 1, PR48: 1, PR52: 1, etc., and PR1, PR3, P05, PR2, PR114, PR5, PR146, PR170, P038, PR187 , PY; l, PY3, PY167, PY154, P036, PY12, PY13, P14 and other insoluble azo pigments, and pR144, PR166, PR214, PR242, PY93, PY94, PY95 and other condensed azo pigments, etc. Examples of the cyanine pigment include copper phthalocyanine, phthalocyanine green, and phthalocyanine blue. Condensed polycyclic pigments can be exemplified by anthraquinone pigments such as: PY24, PY108, P05, PR168 ', PR177, PB60, etc. In the present invention, a molecular weight having flowability at room temperature is 2 0 to 1. An aqueous suspension of an organic pigment treated with a water-insoluble resin of 0 0 0. When the molecular weight of the water-insoluble resin is greater than 10,000, the speed at which the pigment is transformed from the aqueous phase to the resin phase becomes very slow; In one aspect, the molecular weight is between 200 and

314353.ptd Page 13 200413482 V. Description of the invention (5) In the low-molecular-weight solvent or resin, the crystal of the phase-converted pigment becomes larger. The "molecular weight" used in the present invention is a weight average molecular weight measured by a gel permeation chromatography method. In addition, in the present invention, for example, although a hard resin having a molecular weight of 10,000 or less and a high Tg (glass transition point) cannot be phase-inverted even after mixing for a long time, it is necessary to use a fluid resin. Water-insoluble resin. In the present invention, "fluidity" refers to those having a viscosity of 10,000 mPa · S or lower at a temperature range of 0 ° C to 40 ° C. Of course, it can also be used to dissolve resins with viscosity greater than _, 0 0 0 m P a · s or resins with no fluidity in resins with an i-degree of 10, 0 0 0 m P a · s or less, and make the whole resin A composite resin with a viscosity of 10,000 mPa · s or less. The viscosity in the present invention is a value measured using a conical flat-plate viscometer. The water-insoluble resin having a molecular weight of 200 to 10, 000 having flowability at normal temperature used in the present invention may be exemplified by paints, inks, colorants for plastics, printing and dyeing, and color tinting. Various resins used in applications such as agents, or have compatibility with their respective resins, solvents, and other additives, as long as the physical properties of the products obtained are not impaired. In addition, for the dissolution or dispersion of processed pigmented pigments, solvents or inks and coatings in adhesive resins, the molecular weight of the resin is preferably low. If the above-mentioned effects of phase inversion and suppression of crystallization are considered, it is not The preferred molecular weight of the water-soluble resin is from 200 to 2,000. Examples of such water-insoluble resins include: rosin modified benzene resin, rosin modified maleic resin, petroleum resin, alkyd resin, epoxy resin, urea resin, melamine resin, ketone resin, ethylene oxide, Ethyl acetate

314353.ptd Page 14 200413482 V. Description of the invention (6) Fine total ... " Yue, butyric acid tree wall, gas fat, Jumei, Polygonum wax, :: cheap ^% Malay, ... gasification total The consideration of the aggregate composition can be designed as I cup sound 1 ϋ 夂 树 埯 中 赞 or 9 ..... 一 ·, .. 卞 Any thought-breaking transfer point: by j 2 redundant. The surface and surface are made of acid resin, natural resin, resin, amine-based resin, epoxy resin, epoxy resin, amine-based resin, etc., and the combination of resin components above linden tree cloth. κGAN 9 uses 牦 |, especially lactones: 赞 %% has controlled its fluidity 'so it is most suitable for the present invention. In addition, the insoluble and non-soluble properties used in the present invention, That is, a functional group having crosslinkability is preferred. A t is cross-linking. For example, when isocyanate is used as the cross-linking agent and k is active, Shimadzu resin cross-linking resins, such as warp-based, retarded, and amine-based. In addition, when the ring group is :: Umbrella, it can be exemplified by a group such as a benzyl group, a fluorenyl group, a thiol group, etc .; J can be exemplified as a crosslinkable functional group such as a radical crosslinkable group. . Others, = / vffi jKa! ^ An initiator to harden it. When using an electron beam, it can be more specifically, the following resins can be taken as examples: w Resin with a hydroxyl group can be exemplified by comprehensive research chemical company Manufacturing—take i. *. ≫ Cf human CXy) \ of UT- 2 0 0 (viscosity: 2,50 0 to 3, OOOmPa · S (25 ° C)), solid content: more than 98%, molecular weight : 2 0 0 0), UT- 3 0 0 (viscosity: 3, 0 0 to 4, 0 0 0 m P a · s (25 ° C)), solid content: more than 99%, molecular weight: 2,000 ), UMB-1001 (viscosity: 200 to 400mPa · s (25 ° C), solid content: 99% or more, molecular weight: 8 50), UMB- 2 0 0 5 (viscosity: 2,000

To 2,500 mPa · 3 (25. (:), solid content: 99% or more, molecular weight: I! 00).

314353.ptd Page 15 200413482 V. Description of the invention (7) The resin having a hydroxyl group can be exemplified by: CB- 3 0 0 (viscosity: 1, 5 0 0 to 3, 5) 0 0mPa · s (25 ° C), solid content: more than 99%, molecular weight: 2,500), CBB-301 (viscosity: 18,000 to 21,000), 3 * 3 (2 5 °) , Solid content: more than 99%, molecular weight ·· 2,6 0 0), CBLE-301 (viscosity: 2 5, 0 0 to 2 8, 0 0 0 mPa · s (25 ° C), solid content: 99 % Or more, molecular weight: 2,600). Examples of resins with free radical cross-linking properties include: trimethylolpropane tri (meth) acrylate, acrylic acid oligomer, ethoxy rated trimethylol propane tri (medium) 1¾ acid ester, propoxy rated trimethyl ether Alkyl tris (tris) acrylate, triglyceride tris (tris) acrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, etc. Examples include the Laromer series of acrylic oligomers manufactured by BASF, the Ebeery 1 series of Daisuke, the electron beam setting series manufactured by Arakawa Chemical Co., the Alonic series manufactured by Toa Kosei, and the grease manufactured by Showa Polymer Co., Ltd. Oxygen series, Cayalado series manufactured by Nippon Chemical Co., light acrylic series resin made by Kyoeisha Chemical Co., etc. " As the resin having ultraviolet crosslinkability, the resin exemplified for the purpose of having free radical crosslinkability can be used, and as long as the oxygen suppression during the polymerization and crosslink is controlled, it is more preferable. The stirring mixer in the present invention is a machine capable of stirring and kneading an aqueous suspension of an organic pigment and a water-insoluble resin. That is, as long as the pigments in the aqueous suspension can be kneaded in the stirring and mixing device to transfer the phase from the aqueous phase to the resin, any machine can be used without any restrictions. With

314353.Ptd Page 16 200413482 V. Description of the invention (8) As an example, it can be exemplified. In the present invention, it is preferable that the freshly synthesized slurry, kneader, etc. are stirred, mixed, and mixed in an aqueous suspension. The crystallinity or the resin to 60 ° C is more preferable, and the mixture exhibits a similar resin phase. And water. The resin phase is determined to have good phase inversion time. Therefore, the pigment composition is effective, the pigment composition is maintained, and the water in the water phase is exhausted to make the volatile component invented. Organic pigments or dried pigments after processing are mixed in a mixer. Pigment in non-aqueous solution: 100 to 300 times. Phase inversion process Slurry state, phase. The green phase is separated from the water phase, and the time to prepare the composition such as a disperser, a homogenizer, a gear agitator, and a kneading material is as follows: Material slurry, or re-slurry dispersed by grinding Aqueous suspensions such as pulp are added, followed by the addition of a water-insoluble resin and a blending amount of the agitating resin, 100 parts by weight relative to the organic pigment. It is more preferably 500 parts by weight. In terms of pigments, the mixing temperature is preferably 0 to 80 ° C. Starting from 20, it is made of pigment, water, and resin, but it is separated into inhaled pigment if it is continuously kneaded. When the water phase is transparent, the phase inversion is ended and the water phase is made transparent. That is, the short method can be used to transform the fineness dispersed in the aqueous suspension in the aqueous phase into the resin phase. 5 It is also possible to disperse the finely converted state into the resin phase. After the phase inversion project is completed, it is dropped (the first drainage), and if necessary, it is heated or decompressed and evaporated to obtain the raw material composition in which the pigment is dispersed in the resin. The examples illustrate the present invention in more detail, but the present invention is not limited to the examples in which "parts" all represent parts by weight and "%" all represent _ 酽,

314353.ptd Page 17 200413482 f. Description of the invention (9)% by weight. ♦ Example 1 A tetrazole solution was prepared according to a conventional method from 2,53 parts of 3,3 digasified benzidine. On the other hand, 3 5 4 parts of acetifenil was prepared by a conventional method to obtain a coupling solution. This coupling solution was coupled with a tetrazole solution to obtain an aqueous suspension having an azo pigment (PY 1 2) content of 4%. The obtained unrefined pigment aqueous suspension was transitioned with a filter press, washed with water and dehydrated to obtain a wet cake with a pigment content of 25%. With respect to 100 parts of the wet cake, diallyl phthalate (viscosity: j ^ nPa · s (25 ° C), resin content: 99% or more, molecular weight 2 4 6.3) 5 0 ΘΡ , Using a kneader at 60 ° C to carry out a phase inversion treatment for inverting the pigment portion from the aqueous phase to the resin phase. At this time, the first drainage was drained by decantation, and then the second drainage was performed by vacuum dehydration to obtain a processed pigment 1 (solid content 100%) in which PY 12 was dispersed in diallyl phthalate resin. ) 7 5 servings. Example 2 Acidified and crystallized 95 parts of p-amino-4 -amidinophenyl-2 -sulfinic acid, and after cooling, a diazo component was prepared according to a conventional method. On the other hand, a coupling solution was prepared using 95 parts of / 9-hydroxy-1 -naphthoic acid according to a conventional method. The two nitrogen components of the coupling solution are coupled to obtain a dye. Here, 21 parts of rosin soap was added, and after adjusting 1 1 · 〇, 300 parts of a 35% calcium chloride aqueous solution was vigorously added, and then laked to obtain a 1 chlorine pigment (PR57: 1) with a content of 3 % Of aqueous suspension. The obtained aqueous suspension of unrefined pigment was filtered by a filter press, washed with water and dehydrated to obtain a wet cake with a pigment content of 22%. Based on 100 parts of this wet cake, SK oligomer UMB-1 001 (viscosity: 200 to 400 mPa · s (25 ° C)), solid content · 99% or more, molecular weight 8 5 0)

314353.ptd Page 18 200413482 V. Description of the Invention (Ιο) 100 parts of enoic resin, using a kneader at 60, it is used to process the pigment part from the aqueous phase to the resin. The first drainage at this time is drained by decantation 'followed by the second drainage which is subjected to vacuum dehydration. 122 parts of Process Pigment 2 (100% solids content) in which PR-5 7 was dispersed in an acrylic resin was obtained. Example 3 The basic blue of copper phthalocyanine cyanocyanide produced by Toyo Ink Manufacturing Co., Ltd. was refined according to a conventional acid paste method, and was filtered with a filter press, washed with water, and dehydrated to obtain α-type phthalocyanine (PB 1 5). The wet cake has a pigment content of 30%. To 100 parts of this wet cake, add trimethylolpropanetrimethylacrylate (viscosity · 90 mPa · s (25 ° C), resin content: 99% or more, molecular weight 3 38) 100 parts' A gear stirrer was used to process the pigment from the water phase to the resin phase at 6 ° C. At this time, the first drainage was discharged by decantation, and then the second drainage was performed by vacuum dehydration to obtain trimethyl alcohol. Propane trimethacrylic acid_processed pigment 3 (solid content 100%) 1 30 parts of PB 1 5 dispersed in the resin. Example 4 In the same manner as in Example 1, an azo pigment (ργ 1 2) containing Wet cake with a rate of 25%. For 100 parts of this wet cake, Iken Chemical / SK oligomer-UT- 3 0 0 (viscosity: 3 0 0 0-4 0 0 mPa · s (25 ° C), solid content: 99% or more, 50 parts of acrylic resin having a molecular weight of 20000), the pigment part was transferred from the water phase to the resin phase at 60 ° C with a kneader. At 2 °, the first drainage at this time is drained by decantation, and then the second 4 drainage of vacuum dehydration is carried out to obtain a processed pigment 4 (solid = 10 0%) 7 5 copies. Inverse Example 5

314353.ptd page 19 200413482 i. Description of the invention (11) In the same manner as in Example 1, a wet cake having an azo pigment (P Y1 2) content of 25% was obtained. In contrast, this wet cake was 100 parts. Joined Nippon Kayaku Co., Ltd. to make urine :) finished acrylic oligomer Cayalado UX- 2 2 0 1 (viscosity: 4 500 mPa · s (50 ° C), solid content: more than 99%, molecular weight 7 2 0 0) 50 parts, the process of inverting the pigment parts from the aqueous phase to the resin was performed at 60 ° C. with a kneader. At this time, the first drainage was drained by decantation, followed by the second drainage of vacuum dehydration to obtain 5 parts of processing pigment 5 (solid content 100%) 75 in which P Y 1 2 was dispersed in the resin. Ψ Example 1 In the same manner as in Example 1, a wet cake having an azo pigment (p γ 1 2) content of 25% was obtained. Relative to 100 parts of this wet cake, 50 parts of toluene (viscosity: 0.6mPa · s (25 ° C), molecular weight 92.1) was added by mouth, using a kneader at 6 $ to exercise the pigment portion from the water phase to phase Treatment to the resin phase. At this time, the first 4 non-water was discharged by decantation, followed by the second drainage of vacuum dehydration, to obtain 70 parts of processed pigment 6 (35% solid content) in which PY 12 was dispersed in toluene. (Because it is azeotropic with water, it is less than the amount added.) In this comparative example 2, a wet cake having an azo pigment (PY 1 2) content of 5% was obtained in the same manner as in Example 1. Relative to 100 parts of this wet cake, added Japan Synthetic Chemical Industry Co., Ltd. UV- 2 0 0 0B (viscosity: 5 5 0 0 0 mPa · S (6 (TC), molecular weight: 2 5 0 0) 50 parts, The process of inverting the water phase of the pigment to the resin phase was performed with a kneader at 60 ° C. The first drainage after the phase inversion was discharged by decantation, and then the second drainage was performed by vacuum dehydration, and 5 parts of pigment 7 (solid content 100%) 7 with ργ 1 2 dispersed in the resin were obtained.

314353.ptd Page 20 200413482 V. Description of the invention (12) The processed pigments 1 to 7 obtained above were evaluated by the following items. (Evaluation): 1. Phase inversion: In the phase inversion process when forming each processed pigment, the sealing phase is separated from the water phase before the pigment has been inhaled, and the time required for the water phase to become transparent is measured (until the first The time of secondary drainage) as the phase inversion time, the better the phase inversion, the shorter the phase inversion time, which can be said to be the better production efficiency. The results are shown in Table 1. 2. Solubility: Processed pigments 1 to 7 obtained in Examples 1, 2, 3, 4, and 5 and Comparative Examples 1 and 2 and acrylic resin BR-8 manufactured by Mitsubishi Chemical Corporation as a binder resin solution 7 40% toluene solution, so that the pigment concentration in the solid content is 10%, the composition ratio shown in Table 2 is formulated, and the dispersion is stirred for 10 minutes to prepare a coating solution. The dispersion value (unit: μm) of each coating liquid was measured using a particle size analyzer. The smaller the value is, the better the solubility is, and the value of the dispersion becomes larger when the solubility is insufficient. The solubility of the binder resin solution with respect to the processed pigment was evaluated by the dispersion value of each coating liquid. The results are shown in Table 2. 3. Hue evaluation: In the solubility evaluation of 2 above, each of the coating liquids produced was sandwiched with a thickness of 5 0 0 # m and a transparent polyethylene terephthalate film with a thickness of 5 0 // m. In between, its hue (L, a, b) is measured by the colorimeter ZE-2 0 0 0 made by Japan Electric Color Industry Co., Ltd. The results are shown in Table 3.

314353.ptd Page 21 200413482 Process pigment inversion time Example 1 Process pigment 1 5 points Example 2 Process pigment 2 7 points Example 3 Process pigment 3 4 points Example 4 Process pigment 4 7 points Example 5 Process pigment 5 6 points Comparative Example 1 Processed pigment 6 4 points Comparative Example 2 Processed pigment 7 30 points g, Description of the invention (13) Table 1 _ Table 2 Composition of coating solution Dispersion (// m) Processed pigment 40% BR, 8 7 parts of solution Example 1 Processed pigment 1 30.00 225.00 7.5 or less Example 2 Processed pigment 2 55.45 225.00 7.5 or less Example 3 Processed pigment 3 43.33 225.00 7.5 or less Example 4 Processed pigment 4 30.00 225.00 7.5 or less Example 5 Processed pigment 5 30.00 225.00 7.5 or less Comparative Example 1 Processed pigment 6 28.00 225.00 7.5 or less Comparative Example 2 Processed pigment 7 30.00 225.00 With particles Table 3

Process pigment hue evaluation L a B Example 1 Process pigment 1 62.71 16.00 89.60 Example 2 Process pigment 2 24.78 41.24 15.28 Example 3 Process pigment 3 7.13 5.12 -12.98 Example 4 Process pigment 4 62.83 16.05 89.20 Example 5 Process pigment 5 62.15 15.95 89.51 Comparative Example 1 Processed Pigment 6 68.48 8.09 75.64 Comparative Example 2 Processed Pigment 7 None due to uneven coating film: ¾ t measurement

314353.pid Page 22 200413482 V. Description of the invention (14) (Phase inversion): As shown in Table 1, the phase inversion time of processing pigments 1, 2, 3, 4, 5, and 6 is within 10 minutes. Get good phase inversion. On the other hand, it takes 30 minutes for the high-molecular-weight resin-treated processing pigment 7 to invert. (Solubility): As shown in Table 2, the dispersibility values of the processed pigments 1, 2, 3, 4, 5, and 6 are less than 7.5 // m, so it can be judged that the dispersibility is good, and the solubility is good. . On the other hand, the processed pigment 7 treated with a high-molecular-weight resin has a dispersibility value of visually observing fine particles of about several mm, which are insufficiently dissolved in the binder. (Hue evaluation): As shown in Table 3, the processed pigments 1, 4, 5, and 6 using the same wet cake pigment were compared, and only the processed pigment 6 had an opaque hue because of the high L value as a basis for transparency. Regarding the cause of opacity, it is known that the crystallization of the pigment becomes larger, and it is considered that the processed pigment 6 promotes crystallization under the environment of xylene, which is an excellent solvent with low molecular weight, during and after the treatment. In addition, the coating film produced by processing the pigment 7 cannot be measured due to unevenness. According to the present invention, the process of treating an aqueous suspension of an organic pigment with a water-insoluble resin in the field of oligomers having flowability at normal temperature can provide good phase inversion of the pigment from the aqueous phase to the resin phase, Processed pigment composition having high crystal stability after inversion and excellent re-solubility to binder resin and the like after drying, and method for producing the same. The above is the best embodiment of the invention, as long as many changes and modifications can be implemented without violating the spirit and scope of the invention.

314353.ptd Page 23 200413482 It should be understood and understood by relevant industry players.

314353.ptd Page 24 200413482 Simple illustration of the schema

314353.ptd Page 25

Claims (1)

200413482, VI. Application for patent scope 1. A method for manufacturing a processed pigment composition, characterized by using a water-insoluble resin-treated organic pigment with a molecular weight of 2000 to 1 00 0 which has fluidity at normal temperature Aqueous suspension. 2. The method for manufacturing a processed pigment composition according to item 1 of the scope of patent application, wherein the molecular weight of the above water-insoluble resin is 2000 to 2000. 3. For the method for manufacturing a processed pigment composition according to the first or second aspect of the patent application, wherein the above-mentioned water-insoluble resin is one having cross-linking reactivity. k The method for producing a processed gastric pigment product according to any one of claims 1 to 3, wherein the above-mentioned water-insoluble resin has a free radical crosslinkability. 5. The method for manufacturing a processed pigment composition according to any one of the claims 1 to 4, wherein the above-mentioned water-insoluble resin is one having ultraviolet crosslinkability. 6. The method for manufacturing a processed pigment composition according to any one of claims 1 to 5, wherein 100 parts by weight of the pigment relative to 100 parts by weight of the pigment in the aqueous suspension of the above-mentioned organic pigment is used. 500,000 parts by weight or less of the water-insoluble resin are processed in a stirring and mixing device. Id A processed pigment composition is manufactured according to the method for manufacturing a processed pigment composition according to any one of claims 1 to 6. 314353.ptd Page 26