Processing pigment, pigment dispersed composition and coloring photosensitive composition
A technology for processing pigments and pigment dispersion, which is applied in the direction of pigment slurry, optics, optical filters, etc., can solve the problems of insufficient contrast, dispersion, dispersion stability, etc., and achieve the effects of improving dispersion, inhibiting aggregation, and inhibiting dissolution
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[0256] Preparation of Pigment Dispersion Composition
[0257] A pigment dispersion composition according to a preferred embodiment of the present invention contains a processed pigment coated with a resin, a solvent, and further contains a pigment derivative or a dispersant as necessary.
[0258] The processed pigment of the present invention, a solvent, and, if necessary, a dispersant or an alkali-soluble resin are added for kneading and dispersion. Dispersion mainly uses vertical or horizontal sand mills (sand grinders), pin mills (pin mills), slit mills (slit mills), ultrasonic dispersers, etc., using glass or zirconia with a particle size of 0.01 to 1mm The microdispersion treatment is carried out on the beads formed by etc., and the pigment dispersion composition is obtained. Two-roll mill, three-roll mill, ball mill, trommel, disperser can also be used before bead dispersion , kneader, co-kneader, homogenizer, blender, uniaxial or biaxial extruder, etc., while applying...
Embodiment 1、 and comparative example 1
[0471] Synthesis of Specific High Molecular Compound P-1
[0472] Introduce M-127.0g, MMA (methyl methacrylate) 126.0g, MAA (methacrylic acid) 27.0g, and 1-methoxy-2-propanol 420.0g into a three-necked flask replaced with nitrogen, and use A stirrer (Shinto Scientific Co., Ltd.: THREE-ONE MOTOR) was used for stirring. The flask was heated while flowing nitrogen gas in the flask, and the temperature was raised to 90°C. 1.69 g of 2,2-azobis(2,4-dimethylvaleronitrile) (V-65 manufactured by Wako Pure Chemical Industries Ltd.) was added thereto, and heated and stirred at 90° C. for 2 hours . After 2 hours, 1.69 g of V-65 was further added, followed by heating and stirring for 3 hours. As a result, a 30% solution of the specific polymer compound P-1 was obtained.
[0473] The weight average molecular weight of the obtained polymer was measured by gel permeation chromatography (GPC (Gel Permeation Chromatography)) using polystyrene as a standard substance, and was 20,000.
[0474...
Embodiment 2、 and comparative example 2
[0520] Preparation of Pigment Dispersion Composition
[0521] According to the composition in Table 8, the components of the following composition (1) were mixed, stirred and mixed at a rotation speed of 3,000 r.p.m. for 3 hours using a homogenizer (homogenizer), and a mixed solution containing a pigment was prepared.
[0522] composition (1)
[0523] ■Processed pigments (processed pigments listed in Table 8) 95 parts
[0524] ■Organism A (structure below) 5 copies
[0525] Dispersant (30% 1-methoxy-2-propyl acetate solution of the dispersant listed in Table 8) The amount listed in Table 8
[0526] ■1-methoxy-2-propyl acetate 750 parts
[0527] Then, further use 0.3mm For the zirconia beads, the mixed solution obtained above was subjected to a dispersion treatment for 6 hours with a bead disperser DISPERMAT (manufactured by GETZMANN). Then, further use a high-pressure disperser NANO-3000-10 (manufactured by Beryu Co., Ltd.) with a decompression device at 2,000 kg / cm 3 D...
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