WO2020230293A1 - ペリレン系黒色顔料微粒子、その製造方法、それを含む黒色顔料組成物、並びに色相及び/又は彩度が制御されたペリレン系黒色顔料微粒子の製造方法 - Google Patents
ペリレン系黒色顔料微粒子、その製造方法、それを含む黒色顔料組成物、並びに色相及び/又は彩度が制御されたペリレン系黒色顔料微粒子の製造方法 Download PDFInfo
- Publication number
- WO2020230293A1 WO2020230293A1 PCT/JP2019/019317 JP2019019317W WO2020230293A1 WO 2020230293 A1 WO2020230293 A1 WO 2020230293A1 JP 2019019317 W JP2019019317 W JP 2019019317W WO 2020230293 A1 WO2020230293 A1 WO 2020230293A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- black pigment
- perylene
- fine particles
- based black
- pigment fine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
- C09B3/14—Perylene derivatives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
- C09B3/14—Perylene derivatives
- C09B3/18—Preparation from starting materials already containing the perylene nucleus
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0096—Purification; Precipitation; Filtration
Definitions
- the present invention relates to perylene-based black pigment fine particles, a method for producing the same, a black pigment composition containing the same, and a method for producing perylene-based black pigment fine particles having controlled hue and / or saturation.
- Carbon black is the most widely used black pigment, has high coloring power, and is excellent in blackness, acid resistance, and weather resistance.
- carbon black has low electrical resistance, it is difficult to apply it to applications requiring high resistance such as black matrix for liquid crystal color filters and black column spacers (Patent Document 1).
- Patent Document 1 when a black matrix or a black column spacer is formed on a glass substrate by a photolithography method, there is a problem that it is difficult to perform alignment because carbon black has a low light transmittance in the near infrared region.
- Patent Documents 2 to 4 propose a method of using carbon black and a perylene-based black pigment in combination.
- Patent Document 1 perylene-based pigments are widely used as robust pigments and exhibit red-violet-brown-black in a solid state, but their color tone is not always thermally stable (Patent Document 1). Therefore, in Patent Document 1, at least one compound selected from the diimide derivative of perylenetetracarboxylic acid and the diimide derivative of perylene diaminodicarboxylic acid is mixed at a temperature of 200 to 600 ° C. in a vacuum or in an inert gas atmosphere. A perylene-based black pigment obtained by firing has been proposed. However, in Example 1, a perylene-based black pigment having a butyl group fired at 500 ° C. for 1 hour is prepared, but the perylene-based black pigment of Example 1 is an unburned perylene-based black pigment of Comparative Example 1. Although it is excellent in weather resistance and heat resistance, the blackness and coloring power are not improved in terms of color tone.
- the color tone of perylene pigments is not always thermally stable.
- Patent Document 1 an attempt was made to prepare a perylene-based black pigment having high blackness and coloring power and excellent heat resistance and weather resistance by firing, but the color tone has high blackness and coloring power. Not improved.
- C.I. which is a typical perylene-based black pigment.
- I. Pigment Black 31 and C.I. I. Pigment Black 32 has a valley of light absorption near 520 nm, so its color tone is tinged with green, which is far from so-called blackish black.
- compounds classified as peryleneimide originally have a property of easily causing crystal growth, and tend to become needle-like crystals at the time of pigmentation. Therefore, there is a problem that the dispersibility is poor and molding is difficult when forming a pigment composition such as a paste. Further, the packing of the pigment particles becomes sparse and gaps are generated, so that the hiding property is lowered, the blackness becomes insufficient, and the display quality is inferior when used in a display device.
- the present inventor has performed heat treatment under different conditions using perylene-based black pigment fine particles characterized by having an average circularity of 0.8 or more and being amorphous.
- the present invention has been completed by finding that it is possible to produce a perylene-based black pigment in which the hue and / or saturation can be controlled, the hiding property and the light-shielding property are high, and the hue and saturation are controlled. That is, the present invention is as follows.
- the first aspect of the present invention is perylene-based black pigment fine particles having an average circularity of 0.8 or more and being amorphous.
- the second aspect of the present invention is the perylene-based black pigment fine particles according to [1], wherein the average primary particle diameter is 80 nm or less.
- a third aspect of the present invention is a perylene-based black pigment in which a pigment solution in which a perylene-based black pigment is dissolved and a precipitation solvent for precipitating perylene-based black pigment fine particles from the pigment solution are mixed.
- the fourth aspect of the present invention is the production method according to [3], wherein the alkaline earth metal is calcium.
- a fifth aspect of the present invention is that the mixture of the pigment solution and the precipitation solvent is arranged so as to be close to each other and detachable from each other, and at least one of them rotates relative to the other.
- a sixth aspect of the present invention is a black pigment composition containing the perylene-based black pigment fine particles according to [1] or [2].
- a seventh aspect of the present invention is to heat the perylene-based black pigment fine particles according to [1] or [2] or the black pigment composition according to [6] to obtain a hue and / or This is a method for producing a perylene-based black pigment fine particle having controlled saturation or a black pigment composition containing the perylene-based black pigment fine particle.
- the eighth aspect of the present invention is the perylene-based black pigment fine particles according to [7], wherein the hue and / or saturation is controlled by controlling the time and / or temperature of the heat treatment. This is a method for producing a black pigment composition containing the perylene-based black pigment fine particles.
- the hue and / or saturation can be controlled, the hiding property and the light-shielding property are high, and the hue and saturation are controlled.
- Perylene-based black pigment can be produced. This makes it possible to meet the market demand for display quality in display devices.
- Perylene-based black pigment fine particles with controlled hue and / or saturation are used in various applications that require high hiding and light-shielding properties, such as inks, paints, inkjet inks, electrophotographic toners, and rubber plastics. It can be used for coloring pigments for, and also for black matrices and black column spacers for liquid crystal color filters, which require high resistance values. Further, the perylene-based black pigment fine particles of the present invention used for producing perylene-based black pigment fine particles having controlled hue and / or saturation can be obtained by adding a salt of an alkaline earth metal and / or a particle growth inhibitor. It can be manufactured by a relatively simple process of.
- TEM 6 is a transmission electron microscope (TEM) image of the perylene-based black pigment fine particles of Example 1. It is a transmission electron microscope (TEM) image of the perylene-based black pigment fine particles of Comparative Example 1. It is a figure which shows the measurement result of the X-ray diffraction of the perylene-based black pigment fine particle of Example 1. It is the figure which plotted a * and b * shown in Table 3 on the CIE-Lab chromaticity diagram.
- the perylene-based black pigment fine particles of the present invention are characterized by having an average circularity of 0.8 or more and being amorphous.
- Examples of the perylene-based black pigment used in the present invention include black pigments having a perylene skeleton, and specific examples thereof include perylene-based black pigments described in Patent Document 1 and Japanese Patent Application Laid-Open No. 2007-522297.
- As a preferred perylene-based black pigment C.I. I. Pigment Black 31, C.I. I. Examples thereof include peryleneimide-based black pigments such as Pigment Black 32.
- the circularity is measured by approximating the fine particles to an ellipse in the image of the fine particles and using the major axis (A), the peripheral length (L), and the area (S) of the ellipse as described later. If it is a perfect sphere, the circularity will be 1.
- the average circularity of the perylene-based black pigment fine particles of the present invention is 0.8 or more, preferably 0.85 or more, and more preferably 0.9 or more. Since the perylene-based black pigment fine particles of the present invention have an average circularity of 0.8 or more, they are close to a sphere, the distances between the fine particles are made uniform, gaps between the fine particles are unlikely to occur, and the hiding property is high. In the present invention, the circularity of all the particles does not have to be within the above range, and the average circularity, which is an average value, may be within the above range.
- the crystallinity of the perylene-based black pigment fine particles can be confirmed by X-ray diffraction (XRD) measurement as described later. Amorphousness is confirmed by the fact that no peak is observed by X-ray diffraction measurement.
- FIG. 3 shows the results of X-ray diffraction measurement of the perylene-based black pigment fine particles of Example 1, but since no peak was observed, it is judged to be amorphous.
- the average primary particle size of the perylene-based black pigment fine particles of the present invention is preferably 80 nm or less from the viewpoint of providing a black pigment composition having dense packing, improved hiding power, and high light-shielding property, and the pigment dispersion. From the viewpoint of ease, 5 nm or more is preferable.
- a more preferable average primary particle diameter is in the range of 10 to 70 nm, more preferably in the range of 20 to 60 nm, and particularly preferably in the range of 30 to 55 nm.
- the average primary particle size is in these ranges, the packing of the perylene-based black pigment fine particles becomes denser, the hiding property is further improved, and a black pigment composition having a higher light-shielding property can be provided.
- the primary particle diameters of all the particles do not have to be within the above range, and the average primary particle diameter, which is an average value, may be within the above range.
- the method for producing perylene-based black pigment fine particles of the present invention comprises a pigment solution in which a perylene-based black pigment is dissolved and a precipitation solvent for precipitating perylene-based black pigment fine particles from the pigment solution.
- the step of producing perylene-based black pigment fine particles is included, and at least one of the pigment solution and the precipitation solvent independently contains a salt of an alkaline earth metal and / or a particle growth inhibitor. This is a method for producing fine particles of perylene-based black pigment, which is characterized by the above.
- the pigment solution in which the perylene-based black pigment is dissolved examples include a solution in which the perylene-based black pigment is dissolved in an aprotic organic solvent in the presence of an alkali.
- aprotic organic solvent any solvent can be used as long as it dissolves a perylene-based black pigment.
- Specific examples thereof include N-methylpyrrolidone, dimethylformamide, N, N-dimethylacetamide, dimethylimidazolidinone, dimethyl sulfoxide, sulfolane, acetone or acetonitrile, tetrahydrofuran, ⁇ -butyrolactone, and the like, preferably N. -Methylpyrrolidone and the like can be mentioned. These solvents can be used alone or in combination of two or more.
- any alkali that can achieve the object of the present invention can be used.
- Specific examples thereof include alkali metal hydroxides, alkali metal alkoxides, alkaline earth metal hydroxides, alkaline earth metal alkoxides, and quaternary ammonium hydroxides.
- Preferred examples thereof include hydroxides of quaternary ammonium such as benzyltrimethylammonium hydroxide, and for example, those commercially available in the form of methanol solution and the like are easy to handle and are preferably used.
- These alkalis can be used alone or in combination of two or more.
- the concentration of the perylene-based black pigment in the pigment solution is, for example, 0.2 to 10% by weight, preferably 0.5 to 5% by weight, and more preferably 1 to 3% by weight. ..
- the precipitation solvent for precipitating the perylene-based black pigment fine particles from the pigment solution examples include a solvent having a low solubility of the perylene-based black pigment.
- aqueous solvents such as water, a mixed solvent of a hydrophilic organic solvent and water, and a mixed solvent of a water-miscible organic solvent and water.
- the hydrophilic organic solvent include alcohols such as methanol, ethanol and ethylene glycol, ketones such as acetone, sulfoxides such as dimethyl sulfoxide, amides such as dimethylformamide and dimethylacetamide, and carboxylic acids such as acetic acid.
- alcohols such as methanol, ethanol and ethylene glycol.
- water-miscible organic solvent examples include nitriles such as acetonitrile and ethers such as tetrahydrofuran and dimethoxyethane.
- a preferred precipitation solvent is water. If necessary, a dispersant or an acid for neutralizing the alkali may be dissolved in the precipitation solvent.
- the organic solvent is added, for example, when water alone is insufficient to uniformly dissolve the dispersant or the like, or when water alone is insufficient to obtain the viscosity required for circulation in the flow path. be able to.
- the volume ratio of the pigment solution and the precipitation solvent at the time of mixing is appropriately changed according to the concentration of the perylene-based black pigment in the pigment solution and the solubility of the perylene-based black pigment in the mixed solution of the precipitation solvent and the pigment solution. Can be adjusted.
- the volume ratio of the pigment solution to the precipitation solvent is, for example, 1: 100 to 1: 1, preferably 1:40 to 1: 2, and more preferably 1:20 to 1: 4. , More preferably 1:15 to 1: 5.
- At least one of the pigment solution and the precipitation solvent contains a salt of an alkaline earth metal and / or a particle growth inhibitor.
- a salt of an alkaline earth metal and / or a particle growth inhibitor As described in each comparative example described later, when neither the salt of the alkaline earth metal nor the particle growth inhibitor is added, the circularity of the precipitated perylene-based black pigment fine particles is as low as about 0.5 and the particle size is also large. ..
- the salt of the alkaline earth metal include salts of calcium, magnesium, strontium and the like, and preferably calcium salts.
- the salt include inorganic salts such as nitrates, hydrochlorides and sulfates, and salts of organic acids such as acetic acid and methanesulfonic acid.
- an alkali metal salt such as sodium nitrate or potassium nitrate
- the precipitated perylene-based black pigment fine particles have a low circularity of about 0.5 and a large particle size. ..
- the precipitated perylene-based black pigment fine particles have a circularity of 0.85 or more and a particle diameter of 80 nm or less. We were able to. As described above, by adding the salt of the alkaline earth metal, the circularity of the perylene-based black pigment fine particles can be remarkably increased, and the particle size can be remarkably reduced.
- the alkaline earth metal salt can be added to either one or both of the pigment solution and the precipitation solvent. Preferably, it is added to the precipitation solvent.
- the concentration of the salt of the alkaline earth metal in the precipitation solvent is, for example, 0.05 to 5% by weight, preferably 0.1 to 2% by weight. %, More preferably 0.2 to 1% by weight.
- the particle growth inhibitor is a compound having a hydrophobic group and a hydrophilic group, has an affinity for the carbon skeleton of the perylene-based black pigment molecule, and has a hydrophobic group that reduces the growth rate at the time of precipitation, and a precipitation solvent. It is a compound having a hydrophilic group that stabilizes pigment fine particles.
- Preferred examples of the hydrophobic group having an affinity for the carbon skeleton of the perylene-based black pigment molecule and lowering the growth rate at the time of precipitation include an aliphatic group and an aryl group.
- the aliphatic group may have a linear, branched or cyclic aliphatic moiety and may be saturated or unsaturated, and includes, for example, an alkyl group, an alkenyl group, a cycloalkyl group, or a cycloalkenyl group. , It may be unsubstituted or substituted with a substituent.
- the aryl group may be either a monocyclic ring or a condensed ring, and includes, for example, a phenyl group and a naphthyl group, and may be unsubstituted or substituted with a substituent.
- any hydrophilic group that can achieve the object of the present invention can be used, but as a preferable example, an amino group, an ammonium group, a hydroxyl group, and a carboxyl group can be used. Alternatively, a conjugated base thereof and the like can be mentioned.
- aliphatic amines such as C 6 to C 20 alkyl amines such as octyl amine and hexadecyl amine, unsaturated aliphatic amines such as C 6 to C 20 alkenyl amine such as oleyl amine, and hexadecyltrimethylammonium.
- C 6 ⁇ C 20 alkyl trimethyl ammonium salts such as salts, quaternary ammonium salts such as benzyltrimethylammonium salts, octanol, C 6 ⁇ C 20 aliphatic alcohols alkanols such as hexadecanol, and sodium laurate, myristic acid Examples thereof include fatty acid salts such as C 6 to C 20 alcantate such as sodium.
- the hydrophilic group may be changed to a structure having hydrophilicity as a result of a chemical reaction such as hydrolysis.
- the particle growth inhibitor include silane coupling agents such as alkylalkoxysilane and arylalkoxysilane, and examples thereof include dodecyltrimethoxysilane and trimethoxyphenylsilane.
- the precipitated perylene-based black pigment fine particles have a circularity of 0.88 or more and a particle diameter of 80 nm or less. It was. As described above, by adding the particle growth inhibitor, the circularity of the perylene-based black pigment fine particles can be remarkably increased, and the particle size can be remarkably reduced.
- the particle growth inhibitor can be added to either one or both of the pigment solution and the precipitation solvent. Preferably, it is added to the pigment solution.
- the concentration of the particle growth inhibitor in the pigment solution is, for example, 0.01 to 5% by weight, preferably 0.05 to 2% by weight. , More preferably 0.1 to 1% by weight.
- the mixture of the pigment solution and the precipitation solvent is preferably disposed close to and detachable from each other, introducing a fluid between at least two processing surfaces, one of which rotates relative to the other. It is done in a thin film fluid that is formed by.
- a forced thin film type microreactor manufactured by M-Technique Co., Ltd. which is shown in JP-A-2010-189661, can be used.
- the conditions for precipitating perylene-based black pigment fine particles there are no particular restrictions on the conditions for precipitating perylene-based black pigment fine particles.
- the pressure at the time of precipitation for example, a range of normal pressure, subcritical, and supercritical conditions can be selected.
- the temperature is, for example, ⁇ 30 to 100 ° C., preferably ⁇ 10 to 60 ° C., and more preferably 0 to 30 ° C.
- the concentration of the perylene-based black pigment fine particles in the mixed solution after precipitation is not particularly limited, but for example, the perylene-based black pigment fine particles are in the range of 10 to 40,000 mg, preferably in the range of 50 to 20000 mg with respect to 1000 mL of the mixed solution. It is more preferably in the range of 100 to 10000 mg.
- the perylene-based black pigment fine particles of the present invention can be used by blending with a black pigment composition.
- Other components contained in the black pigment composition differ depending on the use of the black pigment composition used, and examples thereof include components usually used for each use.
- a black pigment composition can be produced by mixing with these components according to a conventional method. Specific applications include, for example, inks, paints, inkjet inks, electrophotographic toners, colored pigments for rubber and plastic, and black matrices and black column spacers for liquid crystal color filters that require high resistance values. Uses include.
- Method for producing perylene-based black pigment fine particles having controlled hue and / or saturation By heat-treating the perylene-based black pigment fine particles of the present invention or the black pigment composition containing the perylene-based black pigment fine particles of the present invention, A perylene-based black pigment fine particle having controlled hue and / or saturation, or a black pigment composition containing the perylene-based black pigment fine particle can be produced.
- the perylene-based black pigment fine particles of the present invention are heat-treated in a suspension state to promote the crystallization of the amorphous perylene-based black pigment fine particles, and adjust their hue and / or saturation. can do.
- the solvent used for the suspension include water, and preferably ion-exchanged water from which salts have been removed in order to suppress aggregation of perylene-based black pigment fine particles.
- the temperature of the heat treatment is appropriately selected according to the desired hue and / or saturation, but it is preferable to treat at a temperature equal to or higher than the boiling point of water by using a sealed can such as an autoclave.
- Specific examples of the temperature include, for example, 100 to 400 ° C, preferably 120 to 300 ° C, and more preferably 150 to 250 ° C.
- the heat treatment time is appropriately selected depending on the desired hue and / or saturation, and examples thereof include 10 minutes to 5 hours, preferably 20 minutes to 2 hours, and more. It is preferably 30 minutes to one and a half hours.
- the hue and / or saturation can be clearly adjusted by performing the heat treatment at 150 to 200 ° C. for 1 hour.
- the effect of the heat treatment in the present invention is a remarkable effect that cannot be predicted by those skilled in the art, because the heat treatment at 500 ° C. for 1 hour does not change the blackness and the coloring power.
- the heat treatment of the perylene-based black pigment fine particles of the present invention has been described above, but the perylene-based black pigment composition of the present invention contained by similarly heat-treating the black pigment composition containing the perylene-based black pigment fine particles of the present invention.
- the hue and / or saturation of the black pigment fine particles can be controlled.
- Perylene-based black pigment fine particles with controlled hue and / or saturation The perylene-based black pigment fine particles with controlled hue and / or saturation produced in 4 above can be blended with, for example, a black pigment composition to form a black pigment. It can be used as a composition. Further, the black pigment composition containing the perylene-based black pigment fine particles whose hue and / or saturation is controlled produced in 4 above can also be used as it is as the black pigment composition. Other components contained in the black pigment composition differ depending on the use of the black pigment composition used, and examples thereof include components usually used for each use. In addition, a black pigment composition can be produced by mixing with these components according to a conventional method. Specific applications include, for example, inks, paints, inkjet inks, electrophotographic toners, colored pigments for rubber and plastic, and black matrices and black column spacers for liquid crystal color filters that require high resistance values. Uses include.
- a method for controlling hue and / or saturation of perylene-based black pigment fine particles by heat-treating amorphous perylene-based black pigment fine particles is provided.
- the amorphous perylene-based black pigment fine particles to be heat-treated include perylene-based black pigment fine particles having an average circularity of 0.8 or more and an average primary particle diameter of 80 nm or less.
- the heat treatment is as described above. By performing the heat treatment in the same manner as described above, the hue and / or saturation of the perylene-based black pigment fine particles can be controlled.
- the major axis (A), peripheral length (L), and area (S) of the ellipse which is a projected image of the pigment particles, were obtained from the analysis results of the image analysis software for TEM.
- the dispersion liquid is dried on the mesh with a support film as described above, even if the perylene-based black pigment fine particles in the dispersion liquid are well dispersed, they apparently aggregate in the drying process. Therefore, it may be difficult to determine the exact particle shape. In such a case, image analysis was performed on 100 independent particles that did not overlap.
- the circularity represents a value calculated by the equation (1) by approximating a projected image of a single pigment particle as an ellipse and using the approximate ellipse circumference length (L) and area (S). The closer the circularity value is to 1, the closer the particle is to a sphere, and when the particle shape is a true sphere, the circularity has a maximum value of 1.
- Circularity 4 ⁇ S / L 2 (1) The average value of the circularity of 100 particles of the captured image was obtained, and this average value was taken as the average circularity.
- N-methyl-2-pyrrolidone manufactured by Kishida Chemical Co., Ltd.
- C.I. I. 15 parts of a perylene-based black pigment of Pigment Black 31 was suspended at 25 ° C. in an air atmosphere.
- 25 parts of a 40% benzyltrimethylammonium hydroxide methanol solution (manufactured by Tokyo Kasei Co., Ltd.) was added to dissolve the perylene-based black pigment to prepare a pigment solution (1).
- 50 parts of calcium nitrate tetrahydrate manufactured by Kanto Chemical Co., Inc.
- the precipitation solvent (1) was sent as the first fluid at 300 mL / min, and the pigment solution (1) was sent as the second fluid at 30 mL / min. Then, the mixture was introduced between disks rotated at 1700 rpm and mixed to obtain a suspension containing perylene-based black pigment fine particles.
- the first fluid and the second fluid are the same as those described in JP-A-2010-189661 described above.
- the perylene-based pigment fine particles contained in the suspension were collected by filtration through vacuum filtration using a hard filter paper (opening 1 ⁇ m) and washed with ion-exchanged water three times to obtain a wet cake of perylene-based black pigment fine particles. .. Dispersant Neogen RK (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) is dissolved in ion-exchanged water, and a wet cake of perylene-based black pigment fine particles obtained after washing is further dispersed in this solution to disperse an ultrasonic homogenizer GSD50CF (stock).
- GSD50CF ultrasonic homogenizer
- a pigment fine particle dispersion was prepared by irradiating ultrasonic waves for 15 minutes using (manufactured by Ginsen Co., Ltd.).
- the wet cake of the perylene-based black pigment fine particles that was not used in the preparation of the dispersion was dried under reduced pressure under the condition of ⁇ 0.1 MPaG to obtain a dry powder.
- Example 2 Using a forced thin film type microreactor ULREA (manufactured by M-Technique Co., Ltd.), the same precipitation solvent (1) as in Example 1 was used as the first fluid at 500 mL / min, and the same pigment solution as in Example 1 as the second fluid ( 1) was fed at 100 mL / min, introduced between discs rotated at 5000 rpm and mixed to obtain a suspension containing perylene-based black pigment fine particles. Operations other than the above were performed in the same manner as in Example 1.
- Example 3 20 parts of calcium sulfate dihydrate (manufactured by Kanto Chemical Co., Inc.) was dissolved in 9980 parts of ion-exchanged water at 25 ° C. in an air atmosphere to prepare a precipitation solvent (2) for precipitating perylene-based black pigment fine particles. .. Using a forced thin film type microreactor ULREA (manufactured by M Technique Co., Ltd.), the precipitation solvent (2) was 300 mL / min as the first fluid, and the same pigment solution (1) as in Example 1 was 30 mL / min as the second fluid. The liquids were fed in minutes, introduced between discs rotated at 1700 rpm and mixed to obtain a suspension containing perylene-based black pigment fine particles. Operations other than the above were performed in the same manner as in Example 1.
- Example 4 37 parts of calcium acetate / monohydrate (manufactured by Kanto Chemical Co., Inc.) was dissolved in 9963 parts of ion-exchanged water at 25 ° C. to prepare a precipitation solvent (3) for precipitating perylene-based black pigment fine particles. .. Using a forced thin film type microreactor ULREA (manufactured by M-Technique Co., Ltd.), the precipitation solvent (3) was 300 mL / min as the first fluid, and the same pigment solution (1) as in Example 1 was 30 mL / min as the second fluid. The liquids were fed in minutes, introduced between discs rotated at 1700 rpm and mixed to obtain a suspension containing perylene-based black pigment fine particles. Operations other than the above were performed in the same manner as in Example 1.
- Example 5 24 parts of calcium chloride (manufactured by Kanto Chemical Co., Inc.) was dissolved in 9996 parts of ion-exchanged water at 25 ° C. in an air atmosphere to prepare a precipitation solvent (4) for precipitating perylene-based black pigment fine particles.
- the precipitation solvent (4) was 300 mL / min as the first fluid, and the same pigment solution (1) as in Example 1 was 30 mL / min as the second fluid.
- the liquids were fed in minutes, introduced between discs rotated at 1700 rpm and mixed to obtain a suspension containing perylene-based black pigment fine particles. Operations other than the above were performed in the same manner as in Example 1.
- Example 6 50 parts of calcium nitrate / tetrahydrate (manufactured by Kanto Chemical Co., Inc.) and 13 parts of 60% nitrate (manufactured by Kanto Chemical Co., Inc.) are dissolved in 9937 parts of ion-exchanged water at 25 ° C in an air atmosphere to dissolve perylene-based black pigment. It was used as a precipitation solvent (5) for precipitating fine particles. Using a forced thin film type microreactor ULREA (manufactured by M-Technique Co., Ltd.), the precipitation solvent (5) was used as the first fluid at 300 mL / min, and the same pigment solution (1) as in Example 1 was used as the second fluid at 30 mL / min. The liquids were fed in minutes, introduced between discs rotated at 1700 rpm and mixed to obtain a suspension containing perylene-based black pigment fine particles. Operations other than the above were performed in the same manner as in Example 1.
- Example 7 54 parts of magnesium nitrate hexahydrate (manufactured by Kanto Chemical Co., Inc.) and 13 parts of 60% nitrate (manufactured by Kanto Chemical Co., Inc.) are dissolved in 9933 parts of ion-exchanged water at 25 ° C in an air atmosphere to dissolve perylene-based black pigment. It was used as a precipitation solvent (6) for precipitating fine particles.
- the precipitation solvent (6) was 300 mL / min as the first fluid, and the same pigment solution (1) as in Example 1 was 30 mL / min as the second fluid.
- the liquids were fed in minutes, introduced between discs rotated at 1700 rpm and mixed to obtain a suspension containing perylene-based black pigment fine particles. Operations other than the above were performed in the same manner as in Example 1.
- Example 8> To dissolve 45 parts of strontium nitrate (manufactured by Kanto Chemical Co., Inc.) and 13 parts of 60% nitrate (manufactured by Kanto Chemical Co., Inc.) in 9942 parts of ion-exchanged water at 25 ° C. to precipitate perylene-based black pigment fine particles. Was used as the precipitation solvent (7).
- the precipitation solvent (7) was used as the first fluid at 300 mL / min, and the same pigment solution (1) as in Example 1 was used as the second fluid at 30 mL / min.
- the liquids were fed in minutes, introduced between discs rotated at 1700 rpm and mixed to obtain a suspension containing perylene-based black pigment fine particles. Operations other than the above were performed in the same manner as in Example 1.
- ⁇ Comparative example 1> Using a forced thin film microreactor ULREA (manufactured by M Technique Co., Ltd.), ion-exchanged water was used as the first fluid at 300 mL / min, and the same pigment solution (1) as in Example 1 was used as the second fluid at 30 mL / min. Each of the liquids was sent, introduced between discs rotated at 1700 rpm and mixed to obtain a suspension containing perylene-based black pigment fine particles. Operations other than the above were performed in the same manner as in Example 1.
- a precipitation solvent (8) for precipitating perylene-based black pigment fine particles.
- the precipitation solvent (8) was used as the first fluid at 300 mL / min, and the same pigment solution (1) as in Example 1 was used as the second fluid at 30 mL / min.
- the liquids were fed in minutes, introduced between discs rotated at 1700 rpm and mixed to obtain a suspension containing perylene-based black pigment fine particles. Operations other than the above were performed in the same manner as in Example 1.
- a precipitation solvent (9) for precipitating perylene-based black pigment fine particles.
- the precipitation solvent (9) was 300 mL / min as the first fluid
- the same pigment solution (1) as in Example 1 was 30 mL / min as the second fluid.
- the liquids were fed in minutes, introduced between discs rotated at 1700 rpm and mixed to obtain a suspension containing perylene-based black pigment fine particles. Operations other than the above were performed in the same manner as in Example 1.
- N-Methyl-2-pyrrolidone manufactured by Kishida Chemical Co., Ltd.
- C.I. I. 15 parts of a perylene-based black pigment of Pigment Black 31 was suspended at 25 ° C. in an air atmosphere.
- 25 parts of a 40% benzyltrimethylammonium hydroxide methanol solution manufactured by Tokyo Kasei Co., Ltd.
- 5 parts of octylamine were added to dissolve the perylene-based black pigment to prepare a pigment solution (2).
- ion-exchanged water was sent at 300 mL / min as the first fluid, and pigment solution (2) was sent at 30 mL / min as the second fluid. It was introduced between the discs rotated at 1700 rpm and mixed to obtain a suspension containing perylene-based black pigment fine particles. Operations other than the above were performed in the same manner as in Example 1.
- Example 10 In the pigment solution (2) of Example 9, 5 parts of hexadecylamine was used instead of 5 parts of octylamine, and the conditions other than the above were the same as in Example 9.
- Example 11 In the pigment solution (2) of Example 9, 5 parts of octylamine was replaced with 5 parts of oleylamine, and the conditions other than the above were the same as in Example 9.
- Example 12 In the pigment solution (2) of Example 9, 5 parts of octylamine was replaced with 5 parts of hexadecyltrimethylammonium bromide, and the conditions other than the above were the same as in Example 9.
- Example 13 In the pigment solution (2) of Example 9, 5 parts of octanol was used instead of 5 parts of octylamine, and the conditions other than the above were the same as those of Example 9.
- Example 14 In the pigment solution (2) of Example 9, 5 parts of octylamine was replaced with 5 parts of hexadecanol, and the conditions other than the above were the same as in Example 9.
- Example 15 In the pigment solution (2) of Example 9, 5 parts of octylamine was replaced with 5 parts of dodecyltrimethoxysilane, and the conditions other than the above were the same as in Example 9.
- Example 16 In the pigment solution (2) of Example 9, 5 parts of octylamine was replaced with 5 parts of trimethoxyphenylsilane, and the conditions other than the above were the same as in Example 9.
- Example 1 and Comparative Example 1 are shown in FIGS. 1 and 2, respectively.
- the crystallinity of the perylene-based black pigment fine particles prepared in each Example and Comparative Example was confirmed by X-ray diffraction (XRD) measurement.
- XRD X-ray diffraction
- only the halo diffraction image was confirmed in the dry powder of the perylene-based black pigment fine particles produced in each example, and the powder was amorphous.
- X-ray diffraction measurement a broad diffraction pattern was confirmed in the dry powder of the perylene-based black pigment fine particles produced in the comparative example.
- ⁇ Crystallization of perylene-based black pigment fine particles by heat treatment The dry powder of the perylene-based black pigment fine particles prepared in Example 2 was suspended in ion-exchanged water, sealed in an autoclave, and used at a constant temperature bath AVO-250N (manufactured by AS ONE Corporation) at 150 ° C. and 175 ° C. , 200 ° C. for 1 hour each. The wet cake containing the perylene-based black pigment fine particles was separated by centrifuging the suspension after the heat treatment, and dried under reduced pressure under the condition of ⁇ 0.1 MPaG to obtain a dry powder.
- AVO-250N manufactured by AS ONE Corporation
- Table 3 shows the crystallite size, L * a * b * value, hue, saturation, and optical density of the perylene-based black pigment fine particles obtained after the heat treatment. From the results in Table 3, it can be seen that when the perylene-based black pigment fine particles obtained in the present invention are heat-treated, the saturation decreases, the L * decreases, and the optical density increases as the treatment temperature increases. ..
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Optical Filters (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
[2]本発明の第2の態様は、平均一次粒子径が80nm以下であることを特徴とする、[1]に記載のペリレン系黒色顔料微粒子である。
[3]本発明の第3の態様は、ペリレン系黒色顔料を溶解させた顔料溶液と、前記顔料溶液からペリレン系黒色顔料微粒子を析出させるための析出溶媒とを混合して、ペリレン系黒色顔料微粒子を生成させる工程を含み、
前記顔料溶液と前記析出溶媒のうち、少なくとも一方に独立してアルカリ土類金属の塩及び/又は粒子成長抑制剤が含まれることを特徴とする、[1]又は[2]に記載のペリレン系黒色顔料微粒子の製造方法である。
[5]本発明の第5の態様は、前記顔料溶液と前記析出溶媒との混合を、接近および離反可能に互いに対向して配設され、少なくとも一方が他方に対して相対的に回転する少なくとも2つの処理用面間に導入することで形成される薄膜流体中で行うことを特徴とする、[3]又は[4]に記載のペリレン系黒色顔料微粒子の製造方法である。
[7]本発明の第7の態様は、[1]若しくは[2]に記載のペリレン系黒色顔料微粒子、又は[6]に記載の黒色顔料組成物に熱処理を行うことによる、色相及び/又は彩度が制御されたペリレン系黒色顔料微粒子、又は当該ペリレン系黒色顔料微粒子を含む黒色顔料組成物の製造方法である。
[8]本発明の第8の態様は、前記熱処理の時間及び/又は温度を制御することで、色相及び/又は彩度を制御する、[7]に記載の、ペリレン系黒色顔料微粒子、又は当該ペリレン系黒色顔料微粒子を含む黒色顔料組成物の製造方法である。
また、色相及び/又は彩度が制御されたペリレン系黒色顔料微粒子を製造するために用いられる本発明のペリレン系黒色顔料微粒子は、アルカリ土類金属の塩及び/又は粒子成長抑制剤を添加するとの比較的簡便な処理で製造することができる。
本発明のペリレン系黒色顔料微粒子は、平均円形度が0.8以上であり、非晶質であることを特徴とする。
本発明のペリレン系黒色顔料微粒子は、平均円形度が0.8以上であるため、球形に近く、各々の微粒子間の距離が均一化され、微粒子間の隙間が生じにくく、隠蔽性が高い。なお、本発明においては全ての粒子の円形度が前記範囲にある必要はなく、平均値である平均円形度が前記範囲内であればよい。
本発明のペリレン系黒色顔料微粒子の製造方法は、ペリレン系黒色顔料を溶解させた顔料溶液と、前記顔料溶液からペリレン系黒色顔料微粒子を析出させるための析出溶媒とを混合して、ペリレン系黒色顔料微粒子を生成させる工程を含み、前記顔料溶液と前記析出溶媒のうち、少なくとも一方に独立してアルカリ土類金属の塩及び/又は粒子成長抑制剤が含まれることを特徴とするペリレン系黒色顔料微粒子の製造方法である。
非プロトン性有機溶媒としては、ペリレン系黒色顔料を溶解するものであれば、いかなるものでも使用可能である。具体的には、例えば、N-メチルピロリドン、ジメチルホルムアミド、N,N-ジメチルアセトアミド、ジメチルイミダゾリジノン、ジメチルスルホキシド、スルホラン、アセトン又はアセトニトリル、テトラヒドロフラン、γ-ブチロラクトン等が挙げられ、好ましくは、N-メチルピロリドン等が挙げられる。これらの溶媒は1種類単独で、又は2種類以上を混合して用いることができる。
本発明のペリレン系黒色顔料微粒子は、黒色顔料組成物に配合して用いることができる。黒色顔料組成物に含まれる他の成分は、用いられる黒色顔料組成物の用途ごとに異なり、その用途ごとに通常用いられる成分が挙げられる。また、常法に従ってこれらの成分と混合することで黒色顔料組成物を製造することができる。具体的な用途としては、例えば、インキ、塗料、インクジェット用インキ、電子写真用トナー、ゴム・プラスティック用の着色顔料、更には高い抵抗値が要求される液晶カラーフィルター用ブラックマトリックス及びブラックカラムスペーサー等の用途が挙げられる。
本発明のペリレン系黒色顔料微粒子、又は本発明のペリレン系黒色顔料微粒子を含む黒色顔料組成物に熱処理を行うことで、色相及び/又は彩度が制御されたペリレン系黒色顔料微粒子、又は当該ペリレン系黒色顔料微粒子を含む黒色顔料組成物を製造することができる。
上記4で製造される色相及び/又は彩度が制御されたペリレン系黒色顔料微粒子は、例えば黒色顔料組成物に配合して、黒色顔料組成物として用いることができる。また、上記4で製造される色相及び/又は彩度が制御されたペリレン系黒色顔料微粒子を含む黒色顔料組成物も、そのまま黒色顔料組成物として用いることができる。
黒色顔料組成物に含まれる他の成分は、用いられる黒色顔料組成物の用途ごとに異なり、その用途ごとに通常用いられる成分が挙げられる。また、常法に従ってこれらの成分と混合することで黒色顔料組成物を製造することができる。具体的な用途としては、例えば、インキ、塗料、インクジェット用インキ、電子写真用トナー、ゴム・プラスティック用の着色顔料、更には高い抵抗値が要求される液晶カラーフィルター用ブラックマトリックス及びブラックカラムスペーサー等の用途が挙げられる。
本発明によって、非晶質のペリレン系黒色顔料微粒子に熱処理を行うことによる、ペリレン系黒色顔料微粒子の色相及び/又は彩度の制御方法が提供される。
熱処理を行う非晶質のペリレン系黒色顔料微粒子としては、好ましくは平均円形度が0.8以上であり、平均一次粒子径が80nm以下であるペリレン系黒色顔料微粒子が挙げられる。
熱処理は、前記の通りである。前記と同様に熱処理を行うことで、ペリレン系黒色顔料微粒子の色相及び/又は彩度の制御を行うことができる。
以下に「部」及び「%」とあるのは特に示さない限り、質量基準である。
実施例及び比較例のペリレン系黒色顔料微粒子の粒子径及び円形度は、透過型電子顕微鏡(TEM)観察によって、以下のようにして求めた。
支持膜付きメッシュ上に顔料粒子分散液を滴下し、乾燥したものを試料として、透過型電子顕微鏡 JEM-2100(日本電子株式会社製)を用い、加速電圧80kVで観察を行った。続いて、5万倍で撮影した画像から粒子100個を1つずつTEM用画像解析ソフトウェア iTEM(Olympus Soft Imaging Solutions GmbH製)を使用して楕円として近似した。次に、TEM用画像解析ソフトウェアの解析結果より、前記顔料粒子の投影像である楕円の長径(A)、周囲長(L)、面積(S)を求めた。
この際、前記のように分散液を支持膜付きメッシュ上で乾燥させるため、前記分散液中のペリレン系黒色顔料微粒子が良好に分散した状態であっても、乾燥の過程で見かけ上凝集してしまい、正確な粒子形状が判別しにくい場合がある。このような場合には、重なっていない独立した粒子100個について画像解析を行った。
円形度とは、ある一粒の顔料粒子の投影像を楕円として近似し、近似した楕円の周囲長(L)、面積(S)を用いて式(1)によって計算した値を表す。円形度の値が1に近いほど、粒子が球形に近く、粒子形状が真球の場合には、円形度は最大値1となる。
円形度=4πS/L2 (1)
撮影した画像の粒子100個の円形度の平均値を求め、この平均値を平均円形度とした。
実施例及び比較例のペリレン系黒色顔料微粒子の結晶性は、X線回折(XRD)測定によって、以下のようにして確認した。
ペリレン系黒色顔料微粒子の乾燥粉体を試料として粉末X線回折測定装置 EMPYREAN(スペクトリス株式会社PANalytical事業部製)を用いて、CuKα線をX線源とし、測定範囲を5~60°2θとして測定した。X線回折測定において被検試料にピークが散在する場合に、被検試料と同条件で標準試料を測定し、粉末X線回折総合ソフトウェア HighScore Plus(スペクトリス株式会社PANalytical事業部製)を使用した解析によりそれぞれのX線回折パターンからピーク位置と半値幅を求め、シェラーの式の解析プログラムによって結晶子サイズを求めた。
実施例及び比較例のペリレン系黒色顔料微粒子の乾燥粉体を試料として、紫外可視近赤外分光光度計 V-770(日本分光株式会社製)で積分球ユニットを用いて、測定範囲を200~2500nmとして反射率スペクトル(%R)を測定した。
測定結果から測定・解析用ソフトウェア スペクトルマネージャ Ver.2 スペクトル解析(日本分光株式会社製)を使用して得たCIE-Lab表色系、及びCIE-XYZ表色系における色彩値を用いて、下式(2)、(3)及び(4)によって、色相、彩度、光学密度を求めた。なお、以下では、CIE-Lab表色系の色彩値を、単に「L*a*b*値」と呼ぶ。
色相 H=b*/a* (2)
彩度 C=((a*)2+(b*)2)1/2 (3)
光学密度 OD=log(100/Y) (4)
N-メチル-2-ピロリドン(キシダ化学株式会社製)960部にC.I.Pigment Black 31のペリレン系黒色顔料15部を空気雰囲気下、25℃で懸濁させた。次に、40%水酸化ベンジルトリメチルアンモニウムメタノール溶液(東京化成株式会社製)25部を添加して、ペリレン系黒色顔料を溶解し、顔料溶液(1)とした。イオン交換水9950部に硝酸カルシウム・四水和物(関東化学株式会社製)50部を空気雰囲気下、25℃で溶解し、ペリレン系黒色顔料微粒子を析出させるための析出溶媒(1)とした。
分散液の作製に使用しなかったペリレン系黒色顔料微粒子のウェットケーキは、-0.1MPaGの条件で減圧乾燥して、乾燥粉体とした。
強制薄膜式マイクロリアクター ULREA(エム・テクニック株式会社製)を使用し、第1流体として実施例1と同じ析出溶媒(1)を500mL/分で、第2流体として実施例1と同じ顔料溶液(1)を100mL/分でそれぞれ送液し、5000rpmで回転させたディスク間に導入して混合し、ペリレン系黒色顔料微粒子を含む懸濁液を得た。前記以外の操作は実施例1と同様に行った。
イオン交換水9980部に硫酸カルシウム・二水和物(関東化学株式会社製)20部を空気雰囲気下、25℃で溶解し、ペリレン系黒色顔料微粒子を析出させるための析出溶媒(2)とした。強制薄膜式マイクロリアクター ULREA(エム・テクニック株式会社製)を使用し、第1流体として析出溶媒(2)を300mL/分で、第2流体として実施例1と同じ顔料溶液(1)を30mL/分でそれぞれ送液し、1700rpmで回転させたディスク間に導入して混合し、ペリレン系黒色顔料微粒子を含む懸濁液を得た。前記以外の操作は実施例1と同様に行った。
イオン交換水9963部に酢酸カルシウム・一水和物(関東化学株式会社製)37部を空気雰囲気下、25℃で溶解し、ペリレン系黒色顔料微粒子を析出させるための析出溶媒(3)とした。強制薄膜式マイクロリアクター ULREA(エム・テクニック株式会社製)を使用し、第1流体として析出溶媒(3)を300mL/分で、第2流体として実施例1と同じ顔料溶液(1)を30mL/分でそれぞれ送液し、1700rpmで回転させたディスク間に導入して混合し、ペリレン系黒色顔料微粒子を含む懸濁液を得た。前記以外の操作は実施例1と同様に行った。
イオン交換水9976部に塩化カルシウム(関東化学株式会社製)24部を空気雰囲気下、25℃で溶解し、ペリレン系黒色顔料微粒子を析出させるための析出溶媒(4)とした。強制薄膜式マイクロリアクター ULREA(エム・テクニック株式会社製)を使用し、第1流体として析出溶媒(4)を300mL/分で、第2流体として実施例1と同じ顔料溶液(1)を30mL/分でそれぞれ送液し、1700rpmで回転させたディスク間に導入して混合し、ペリレン系黒色顔料微粒子を含む懸濁液を得た。前記以外の操作は実施例1と同様に行った。
イオン交換水9937部に硝酸カルシウム・四水和物(関東化学株式会社製)50部、60%硝酸(関東化学株式会社製)13部を空気雰囲気下、25℃で溶解し、ペリレン系黒色顔料微粒子を析出させるための析出溶媒(5)とした。強制薄膜式マイクロリアクター ULREA(エム・テクニック株式会社製)を使用し、第1流体として析出溶媒(5)を300mL/分で、第2流体として実施例1と同じ顔料溶液(1)を30mL/分でそれぞれ送液し、1700rpmで回転させたディスク間に導入して混合し、ペリレン系黒色顔料微粒子を含む懸濁液を得た。前記以外の操作は実施例1と同様に行った。
イオン交換水9933部に硝酸マグネシウム・六水和物(関東化学株式会社製)54部、60%硝酸(関東化学株式会社製)13部を空気雰囲気下、25℃で溶解し、ペリレン系黒色顔料微粒子を析出させるための析出溶媒(6)とした。強制薄膜式マイクロリアクター ULREA(エム・テクニック株式会社製)を使用し、第1流体として析出溶媒(6)を300mL/分で、第2流体として実施例1と同じ顔料溶液(1)を30mL/分でそれぞれ送液し、1700rpmで回転させたディスク間に導入して混合し、ペリレン系黒色顔料微粒子を含む懸濁液を得た。前記以外の操作は実施例1と同様に行った。
イオン交換水9942部に硝酸ストロンチウム(関東化学株式会社製)45部、60%硝酸(関東化学株式会社製)13部を空気雰囲気下、25℃で溶解し、ペリレン系黒色顔料微粒子を析出させるための析出溶媒(7)とした。強制薄膜式マイクロリアクター ULREA(エム・テクニック株式会社製)を使用し、第1流体として析出溶媒(7)を300mL/分で、第2流体として実施例1と同じ顔料溶液(1)を30mL/分でそれぞれ送液し、1700rpmで回転させたディスク間に導入して混合し、ペリレン系黒色顔料微粒子を含む懸濁液を得た。前記以外の操作は実施例1と同様に行った。
強制薄膜式マイクロリアクター ULREA(エム・テクニック株式会社製)を使用し、第1流体としてイオン交換水を300mL/分で、第2流体として実施例1と同じ顔料溶液(1)を30mL/分でそれぞれ送液し、1700rpmで回転させたディスク間に導入して混合し、ペリレン系黒色顔料微粒子を含む懸濁液を得た。前記以外の操作は実施例1と同様に行った。
イオン交換水9964部に硝酸ナトリウム(関東化学株式会社製)36部を空気雰囲気下、25℃で溶解し、ペリレン系黒色顔料微粒子を析出させるための析出溶媒(8)とした。強制薄膜式マイクロリアクター ULREA(エム・テクニック株式会社製)を使用し、第1流体として析出溶媒(8)を300mL/分で、第2流体として実施例1と同じ顔料溶液(1)を30mL/分でそれぞれ送液し、1700rpmで回転させたディスク間に導入して混合し、ペリレン系黒色顔料微粒子を含む懸濁液を得た。前記以外の操作は実施例1と同様に行った。
イオン交換水9957部に硝酸カリウム(関東化学株式会社製)43部を空気雰囲気下、25℃で溶解し、ペリレン系黒色顔料微粒子を析出させるための析出溶媒(9)とした。強制薄膜式マイクロリアクター ULREA(エム・テクニック株式会社製)を使用し、第1流体として析出溶媒(9)を300mL/分で、第2流体として実施例1と同じ顔料溶液(1)を30mL/分でそれぞれ送液し、1700rpmで回転させたディスク間に導入して混合し、ペリレン系黒色顔料微粒子を含む懸濁液を得た。前記以外の操作は実施例1と同様に行った。
N-メチル-2-ピロリドン(キシダ化学株式会社製)955部にC.I.Pigment Black 31のペリレン系黒色顔料15部を空気雰囲気下、25℃で懸濁させた。次に、40%水酸化ベンジルトリメチルアンモニウムメタノール溶液(東京化成株式会社製)25部とオクチルアミン5部を添加して、ペリレン系黒色顔料を溶解し、顔料溶液(2)とした。
実施例9の顔料溶液(2)におけるオクチルアミン5部に替えてヘキサデシルアミン5部とし、前記以外の条件は実施例9と同様である。
実施例9の顔料溶液(2)におけるオクチルアミン5部に替えてオレイルアミン5部とし、前記以外の条件は実施例9と同様である。
実施例9の顔料溶液(2)におけるオクチルアミン5部に替えてヘキサデシルトリメチルアンモニウムブロミド5部とし、前記以外の条件は実施例9と同様である。
実施例9の顔料溶液(2)におけるオクチルアミン5部に替えてオクタノール5部とし、前記以外の条件は実施例9と同様である。
実施例9の顔料溶液(2)におけるオクチルアミン5部に替えてヘキサデカノール5部とし、前記以外の条件は実施例9と同様である。
実施例9の顔料溶液(2)におけるオクチルアミン5部に替えてドデシルトリメトキシシラン5部とし、前記以外の条件は実施例9と同様である。
実施例9の顔料溶液(2)におけるオクチルアミン5部に替えてトリメトキシフェニルシラン5部とし、前記以外の条件は実施例9と同様である。
各実施例、比較例で作製したペリレン系黒色顔料微粒子の結晶性をX線回折(XRD)測定により確認した。各実施例で作製したペリレン系黒色顔料微粒子の乾燥粉体は、X線回折測定の結果、いずれもハロー回折像のみが確認され、非晶質であった。比較例で作製したペリレン系黒色顔料微粒子の乾燥粉体は、X線回折測定の結果、ブロードな回折パターンが確認された。
実施例2で調製したペリレン系黒色顔料微粒子の乾燥粉体をイオン交換水中に懸濁させ、オートクレーブ中に封入し、恒温槽 AVO-250N(アズワン株式会社製)を使用して150℃、175℃、200℃でそれぞれ1時間の熱処理を行った。熱処理後の懸濁液を遠心分離することによってペリレン系黒色顔料微粒子を含むウェットケーキを分離し、-0.1MPaGの条件で減圧乾燥して、乾燥粉体とした。
各熱処理で得られたペリレン系黒色顔料微粒子の反射率スペクトル(%R)を測定し、色相、彩度、光学密度を確認した。
Claims (8)
- 平均円形度が0.8以上であり、非晶質であることを特徴とするペリレン系黒色顔料微粒子。
- 平均一次粒子径が80nm以下であることを特徴とする、請求項1に記載のペリレン系黒色顔料微粒子。
- ペリレン系黒色顔料を溶解させた顔料溶液と、前記顔料溶液からペリレン系黒色顔料微粒子を析出させるための析出溶媒とを混合して、ペリレン系黒色顔料微粒子を生成させる工程を含み、
前記顔料溶液と前記析出溶媒のうち、少なくとも一方に独立してアルカリ土類金属の塩及び/又は粒子成長抑制剤が含まれることを特徴とする、請求項1又は2に記載のペリレン系黒色顔料微粒子の製造方法。 - 前記アルカリ土類金属がカルシウムであることを特徴とする、請求項3に記載のペリレン系黒色顔料微粒子の製造方法。
- 前記顔料溶液と前記析出溶媒との混合を、接近および離反可能に互いに対向して配設され、少なくとも一方が他方に対して相対的に回転する少なくとも2つの処理用面間に導入することで形成される薄膜流体中で行うことを特徴とする、請求項3又は4に記載のペリレン系黒色顔料微粒子の製造方法。
- 請求項1又は2に記載のペリレン系黒色顔料微粒子を含む黒色顔料組成物。
- 請求項1若しくは2に記載のペリレン系黒色顔料微粒子、又は請求項6に記載の黒色顔料組成物に熱処理を行うことによる、色相及び/又は彩度が制御されたペリレン系黒色顔料微粒子、又は当該ペリレン系黒色顔料微粒子を含む黒色顔料組成物の製造方法。
- 前記熱処理の時間及び/又は温度を制御することで、色相及び/又は彩度を制御する、請求項7に記載のペリレン系黒色顔料微粒子、又は当該ペリレン系黒色顔料微粒子を含む黒色顔料組成物の製造方法。
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/019317 WO2020230293A1 (ja) | 2019-05-15 | 2019-05-15 | ペリレン系黒色顔料微粒子、その製造方法、それを含む黒色顔料組成物、並びに色相及び/又は彩度が制御されたペリレン系黒色顔料微粒子の製造方法 |
| EP19928557.8A EP3971246A4 (en) | 2019-05-15 | 2019-05-15 | FINE PERYLENE-BASED PIGMENT BLACK PARTICLES, METHOD FOR PRODUCTION THEREOF, PIGMENT BLACK COMPOSITION CONTAINING SAME AND METHOD FOR PRODUCTION OF PERYLENE-BASED FINE PIGMENT BLACK PARTICLES HAVING REGULATED HUE AND/OR SATURATION |
| US17/606,926 US11834578B2 (en) | 2019-05-15 | 2019-05-15 | Black perylene pigment microparticles, method of producing the same, black pigment composition comprising the same, and method of producing black perylene pigment microparticles having controlled hue and/or chroma |
| JP2021519204A JP7295583B2 (ja) | 2019-05-15 | 2019-05-15 | ペリレン系黒色顔料微粒子、その製造方法、それを含む黒色顔料組成物、並びに色相及び/又は彩度が制御されたペリレン系黒色顔料微粒子の製造方法 |
| CN201980096343.3A CN113825808B (zh) | 2019-05-15 | 2019-05-15 | 苝系黑色颜料微粒子、其制造方法、含有其的黑色颜料组合物,以及色相和/或色度受控的苝系黑色颜料微粒子的制造方法 |
| KR1020217033875A KR102836965B1 (ko) | 2019-05-15 | 2019-05-15 | 페릴렌계 흑색 안료 미립자, 그 제조 방법, 그것을 포함하는 흑색 안료 조성물, 및 색상 및/또는 채도가 제어된 페릴렌계 흑색 안료 미립자의 제조 방법 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/019317 WO2020230293A1 (ja) | 2019-05-15 | 2019-05-15 | ペリレン系黒色顔料微粒子、その製造方法、それを含む黒色顔料組成物、並びに色相及び/又は彩度が制御されたペリレン系黒色顔料微粒子の製造方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020230293A1 true WO2020230293A1 (ja) | 2020-11-19 |
Family
ID=73290292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2019/019317 Ceased WO2020230293A1 (ja) | 2019-05-15 | 2019-05-15 | ペリレン系黒色顔料微粒子、その製造方法、それを含む黒色顔料組成物、並びに色相及び/又は彩度が制御されたペリレン系黒色顔料微粒子の製造方法 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US11834578B2 (ja) |
| EP (1) | EP3971246A4 (ja) |
| JP (1) | JP7295583B2 (ja) |
| KR (1) | KR102836965B1 (ja) |
| CN (1) | CN113825808B (ja) |
| WO (1) | WO2020230293A1 (ja) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10219167A (ja) | 1997-01-31 | 1998-08-18 | Sumitomo Rubber Ind Ltd | ブラックマトリックス層用インキ |
| JP2003504480A (ja) * | 1999-07-09 | 2003-02-04 | チバ スペシャルティ ケミカルズ ホールディング インコーポレーテッド | 改善された色特性を有する顔料及びその製造方法 |
| JP2003041144A (ja) | 2001-07-27 | 2003-02-13 | Yokohama Tlo Co Ltd | 黒色ペリレン系顔料およびその製造方法 |
| JP2007522297A (ja) | 2004-02-11 | 2007-08-09 | ビーエーエスエフ アクチェンゲゼルシャフト | 黒いペリレン顔料 |
| WO2009008388A1 (ja) * | 2007-07-06 | 2009-01-15 | M.Technique Co., Ltd. | 強制超薄膜回転式反応法を用いた顔料ナノ微粒子の製造方法及びその顔料ナノ粒子、これを用いたインクジェット用インク |
| JP2009221266A (ja) * | 2008-03-13 | 2009-10-01 | Fujifilm Corp | 顔料微粒子の製造方法 |
| JP2012068613A (ja) | 2010-08-27 | 2012-04-05 | Toyo Ink Sc Holdings Co Ltd | 黒色樹脂組成物及びブラックマトリクス |
| JP2012212051A (ja) | 2011-03-31 | 2012-11-01 | Toyo Ink Sc Holdings Co Ltd | カラーフィルタ用着色組成物、およびカラーフィルタ |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1120208C (zh) * | 2001-02-20 | 2003-09-03 | 华东理工大学 | 一种合成苝系颜料的方法 |
| JP2003041145A (ja) | 2001-07-27 | 2003-02-13 | Yokohama Tlo Co Ltd | 黒色ペリレン系顔料およびその製造方法 |
| DE102004051455A1 (de) * | 2004-10-22 | 2006-04-27 | Clariant Gmbh | Wasserbasierende Pigmentpräparationen auf Oligoesterbasis, ihre Herstellung und Verwendung |
| CN1290932C (zh) * | 2005-01-07 | 2006-12-20 | 华东理工大学 | 黑色苝系颜料的制备方法 |
| CN1303159C (zh) * | 2005-02-24 | 2007-03-07 | 天津理工大学 | 高遮盖力苝系颜料的制备方法 |
| ES2381058T3 (es) * | 2007-07-03 | 2012-05-22 | Basf Se | Síntesis acuosa de pigmentos de perileno |
| EP2428536B1 (en) * | 2009-03-03 | 2019-04-03 | M. Technique Co., Ltd. | Method of treating surface of fine pigment particles |
| JP4853537B2 (ja) | 2009-03-13 | 2012-01-11 | 東京エレクトロン株式会社 | 現像装置、現像方法及び記憶媒体 |
| JP2011202081A (ja) | 2010-03-26 | 2011-10-13 | Fujifilm Corp | 微粒子状複合有機顔料の分散物及びその微粒子状複合有機顔料の製造方法 |
| KR101859710B1 (ko) | 2010-06-08 | 2018-05-21 | 토요잉크Sc홀딩스주식회사 | 칼라 필터용 착색 조성물 및 칼라 필터 |
| US20150075615A1 (en) * | 2012-01-13 | 2015-03-19 | Keiwa Inc. | Back sheet for solar battery module, production method of back sheet for solar battery module, and solar battery module |
-
2019
- 2019-05-15 WO PCT/JP2019/019317 patent/WO2020230293A1/ja not_active Ceased
- 2019-05-15 JP JP2021519204A patent/JP7295583B2/ja active Active
- 2019-05-15 CN CN201980096343.3A patent/CN113825808B/zh active Active
- 2019-05-15 KR KR1020217033875A patent/KR102836965B1/ko active Active
- 2019-05-15 US US17/606,926 patent/US11834578B2/en active Active
- 2019-05-15 EP EP19928557.8A patent/EP3971246A4/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10219167A (ja) | 1997-01-31 | 1998-08-18 | Sumitomo Rubber Ind Ltd | ブラックマトリックス層用インキ |
| JP2003504480A (ja) * | 1999-07-09 | 2003-02-04 | チバ スペシャルティ ケミカルズ ホールディング インコーポレーテッド | 改善された色特性を有する顔料及びその製造方法 |
| JP2003041144A (ja) | 2001-07-27 | 2003-02-13 | Yokohama Tlo Co Ltd | 黒色ペリレン系顔料およびその製造方法 |
| JP2007522297A (ja) | 2004-02-11 | 2007-08-09 | ビーエーエスエフ アクチェンゲゼルシャフト | 黒いペリレン顔料 |
| WO2009008388A1 (ja) * | 2007-07-06 | 2009-01-15 | M.Technique Co., Ltd. | 強制超薄膜回転式反応法を用いた顔料ナノ微粒子の製造方法及びその顔料ナノ粒子、これを用いたインクジェット用インク |
| JP2010189661A (ja) | 2007-07-06 | 2010-09-02 | M Technique Co Ltd | 顔料ナノ粒子の製造方法、及び、インクジェット用インクの製造方法 |
| JP2009221266A (ja) * | 2008-03-13 | 2009-10-01 | Fujifilm Corp | 顔料微粒子の製造方法 |
| JP2012068613A (ja) | 2010-08-27 | 2012-04-05 | Toyo Ink Sc Holdings Co Ltd | 黒色樹脂組成物及びブラックマトリクス |
| JP2012212051A (ja) | 2011-03-31 | 2012-11-01 | Toyo Ink Sc Holdings Co Ltd | カラーフィルタ用着色組成物、およびカラーフィルタ |
Non-Patent Citations (2)
| Title |
|---|
| MIZUGUCHI, JIN: "Color generation mechanism of black perylene (P.bl.31)", JOURNAL OF THE JAPAN SOCIETY OF COLOUR MATERIAL, vol. 73, no. 1, 2000, pages 28 - 34, XP055759982 * |
| See also references of EP3971246A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7295583B2 (ja) | 2023-06-21 |
| KR20220008805A (ko) | 2022-01-21 |
| CN113825808A (zh) | 2021-12-21 |
| US20220235227A1 (en) | 2022-07-28 |
| US11834578B2 (en) | 2023-12-05 |
| CN113825808B (zh) | 2025-03-11 |
| KR102836965B1 (ko) | 2025-07-22 |
| JPWO2020230293A1 (ja) | 2020-11-19 |
| EP3971246A4 (en) | 2023-03-01 |
| EP3971246A1 (en) | 2022-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4535207B2 (ja) | 印刷インキ用顔料組成物、その製造方法、及び印刷インキの製造方法 | |
| WO2018061666A1 (ja) | 窒化ジルコニウム粉末及びその製造方法 | |
| JP2012522086A (ja) | 容易に分散可能な紫色顔料の製造方法 | |
| JP4144655B2 (ja) | α型ジケトピロロピロール顔料、それを用いた着色組成物、および赤色着色膜 | |
| TWI836134B (zh) | 鹵化鋅酞青素顏料之製造方法 | |
| JP5678519B2 (ja) | 微細黄色顔料組成物及び該微細黄色顔料組成物を含む顔料分散体、並びに前記微細黄色顔料組成物の製造方法 | |
| TW202200713A (zh) | 鹵化鋅酞菁顏料及其製造方法 | |
| WO2018084153A1 (ja) | 緑色フィルタ用顔料組成物及びその製造方法 | |
| TW202212488A (zh) | 鹵化鋅酞菁顏料 | |
| WO2020230293A1 (ja) | ペリレン系黒色顔料微粒子、その製造方法、それを含む黒色顔料組成物、並びに色相及び/又は彩度が制御されたペリレン系黒色顔料微粒子の製造方法 | |
| KR20200128612A (ko) | 할로겐화아연프탈로시아닌 안료의 제조 방법 | |
| WO2017134910A1 (ja) | 色特性を制御された酸化亜鉛粒子、及びその製造方法並びにその酸化亜鉛粒子を含む塗布用組成物 | |
| CN101263204B (zh) | 有色微小复合颗粒、有色微小复合颗粒的制造方法、着色材料、滤色器、和喷墨用墨水 | |
| JPH11314918A (ja) | 無水アンチモン酸亜鉛ゾル及びその製造方法 | |
| JP6819826B1 (ja) | ハロゲン化亜鉛フタロシアニン顔料及びその製造方法 | |
| WO2018066717A1 (ja) | 有機顔料組成物の製造方法、塗膜の製造方法及び塗膜の輝度の評価方法 | |
| JP2007009198A (ja) | 固形水彩絵の具 | |
| JP2002146224A (ja) | キナクリドン固溶体顔料およびその製造方法 | |
| CN112334548B (zh) | 卤化锌酞菁颜料的制造方法 | |
| JP2020023419A (ja) | 薄片状チタン酸の有機溶剤分散体およびその製造方法並びにその用途 | |
| JPH04246469A (ja) | 顔料組成物 | |
| TWI889970B (zh) | 紅色顏料分散體 | |
| TWI908812B (zh) | 鹵化鋅酞菁顏料的製造方法 | |
| JP2003013008A (ja) | 表示デバイス用水性遮光塗料組成物および絶縁性遮光膜 | |
| TW202210588A (zh) | 鹵化鋅酞菁顏料的製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19928557 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2021519204 Country of ref document: JP Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2019928557 Country of ref document: EP Effective date: 20211215 |
|
| WWG | Wipo information: grant in national office |
Ref document number: 201980096343.3 Country of ref document: CN |