WO2005037716A1 - 複合黒色酸化物粒子、その製造方法、黒色塗料及びブラックマトリックス - Google Patents
複合黒色酸化物粒子、その製造方法、黒色塗料及びブラックマトリックス Download PDFInfo
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- WO2005037716A1 WO2005037716A1 PCT/JP2004/015132 JP2004015132W WO2005037716A1 WO 2005037716 A1 WO2005037716 A1 WO 2005037716A1 JP 2004015132 W JP2004015132 W JP 2004015132W WO 2005037716 A1 WO2005037716 A1 WO 2005037716A1
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- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
Definitions
- the present invention relates to composite black oxide particles, a method for producing the same, a black paint, and a black matrix. More specifically, the present invention relates to composite black oxide particles containing oxides of cobalt, copper, and manganese and suitable as black pigments for paints, inks, toners, rubber and plastics, and the like.
- a composite black oxide particle having an excellent blackness which is suitable for forming a black matrix coloring composition, a black electrode on a front plate of a plasma display, a plasma address liquid crystal, etc., and a light-shielding layer, a method for producing the same, It relates to paints and black matrices. Background art
- Black pigments used for paints, inks, toners, rubbers and plastics, etc. are required to have excellent properties such as blackness, hue, tinting strength, and covertability, and to be inexpensive.
- Iron oxide pigments such as carbon black and magnetite, and other composite oxide pigments are used depending on the application.
- black pigments in recent years is not limited to high performance and high quality.
- a black pigment containing a metal oxide as a main component is not only excellent in blackness, but also uses oxidation resistance required at the time of sintering when forming a black matrix, a resin or a solvent, or the like. It is required to have excellent dispersibility in a vehicle required for forming a coating and excellent surface smoothness of the coating when the coating is formed.
- Such a black pigment containing a metal oxide as a main component include metal oxide particles having a single composition such as cobalt oxide, manganese oxide, and copper oxide, Cu-Cr-based, Cu—Mn-based, and Cu— Composite oxide particles such as Cr—Mn, Cu—Fe—Mn, Co—Mn—Fe, and Co—Fe—Cr can be used.
- particles having a large particle diameter have a high blackness, but particles having a submicron level exhibit a brown color, or production of particles having such a level is difficult. It is.
- composite oxide particles have advantages and disadvantages in terms of performance required for black pigments.
- chromium is contained as a component such as Cu_Cr or Cu_Cr ⁇ Mn, it is difficult to produce submicron-level particles in addition to the problem of chromium toxicity.
- the film has a high electric resistance in order to prevent conduction between electrodes. Is required. Therefore, it is needless to say that the black pigment used for forming the film is necessarily necessarily high in electric resistance (see Patent Document 3). With regard to the high electrical resistance required for black pigments, conventional metal oxides cannot be said to be at a sufficient level, and materials with even higher resistance are required.
- Patent Document 1 JP-A-9-1237570
- Patent Document 2 JP-A-10_231441
- Patent Document 3 JP-A-2000-162643
- an object of the present invention is to provide composite black oxide particles suitable mainly as black pigments for paints, inks, toners, and rubbers and plastics, and a method for producing the same.
- blackness, oxidation resistance, dispersibility at the time of coating It is an object of the present invention to provide composite black oxide particles which are more excellent in the surface smoothness of a coating film when the coating material is formed into a coating film, and a method for producing the same.
- the present inventors have conducted intensive studies on materials mainly composed of various metal oxides, and as a result, have found that specific Co—Cu—Mn-based composite oxide particles can solve the above-mentioned problems, and have completed the present invention. I made it.
- the composite black oxide particles of the present invention consist of oxides of cobalt, copper, and manganese.
- the molar ratio of copper-Z-cobalt is 0.1-0.5 and the molar ratio of manganese / cobalt is 0.2-1.0.
- the composite black oxide particles of the first embodiment are composed of oxides of cobalt, copper, and manganese, and the molar ratio of copper and cobalt is 0.
- composite black oxide particles of the present invention In examining the composite black oxide particles of the present invention, according to the present inventors' production of composite black oxide particles of various systems (compositions), most of them have plate-like or amorphous shapes. It has been found that a shape can be obtained. For example, in the case of composite black oxide particles such as Co— ⁇ type, Co_Cu type, Co—Mn—Fe type, plate-like particles can be easily obtained. In the case of complex black oxide particles such as Mn_Cu, Mn_Cu_Ni, and Co_Fe_Cr, particles of irregular shapes are easily obtained.
- the shape of the particles When the shape of the particles is plate-like, the shape may be somewhat uniform, but the dispersibility upon coating is granular, especially spherical or pseudo spherical Co-Cu-Mn composite. It was much worse than the black oxide particles. In addition, it has been found that particles having an irregular shape have poor surface smoothness of the coating film when the coating film is formed, as well as dispersibility when the coating material is formed. .
- the present inventors first studied a composite black oxide particle having a granular shape, particularly a spherical resin having a pseudospherical shape, and developed a Cu—Fe_Mn-based and Co_Cu—Mn-based composite black oxide particle. It has been found that this is achieved in oxide particles.
- the Cu—Fe—Mn composite black oxide particles have excellent dispersibility when formed into a coating. Not only the surface smoothness of the coating when the coating is formed but also the blackness are excellent. I have. However, it is inferior in oxidation resistance, and discolors and discolors due to oxidation.
- Co_Cu-Mn-based composite black oxide particles are preferable. However, even with this composition, not all the problems sought by the present invention can be satisfied. Then, the present inventors paid attention to the quantitative ratio of these components.
- the molar ratio of copper-z-cobalt in the present embodiment is 0.1-0.5, particularly 0.15-0.45.
- the molar ratio is less than 0.1, the obtained particles are likely to be coarsened, and the coloring property when formed into a coating is inferior. If the molar ratio is more than 0.5, irregular particles are likely to be generated, and the dispersibility and blackness of the resulting coating composition are poor.
- the molar ratio of manganese / cobalt in the present embodiment is 0.2 to 1.0, particularly 0.3 to 0.9. If the molar ratio is less than 0.2, the resulting particles become irregular, such as in the form of a plate, or have poor dispersibility when immediately formed into a coating, and the coloring of the coating film is also poor. When the molar ratio exceeds 1.0, the obtained particles are liable to become irregular, such as plate-like. In addition, the particles tend to be finer, and the particles become more reddish.
- the composite black oxide particles of the present embodiment often take a spinel type or an inverse spinel type as a crystal structure. Such a crystal structure is preferable in terms of blackness and hue as compared with other crystal structures, and is preferable. Whether the composite black oxide particles have a spinel type / inverse spinel type crystal structure or other crystal structures can be determined by XRD. Whether the composite black oxide particles have a spinel type or an inverse spinel type crystal structure can be determined by Mossbauer spectroscopy. However, in the present invention, it is important that the composite black oxide particles have a crystal structure of either a spinel type or an inverse spinel type. It is not so important.
- the composite black oxide particles of the present embodiment preferably have an average particle diameter of 0.05 to 0.15 zm. With such fine composite black oxide particles, the surface of the coating film after coating is excellent in surface smoothness and the glossiness of the coating film is increased.
- the composite black oxide particles of the present embodiment preferably have an oil absorption of 40mlZl00g or less. If the oil absorption exceeds 40 ml / 100 g, the number of agglomerated particles is large due to the irregular shape of the particles and the like, and as a result, the dispersibility when paint is applied is poor.
- the composite black oxide particles of the present embodiment have a specific surface area of 10-40 m 2 / g by BET. Is preferred.
- the specific surface area by BET is less than 10 m 2 Zg, the particles themselves are too large, and there is a possibility that the coloring property when the paint is applied becomes poor.
- it exceeds 40 m 2 / g not only the surface smoothness of the coating film when formed into a paint and the paint is drawn is poor, but also the particles are too fine and the blackness may be reduced.
- the composite black oxide particles of the present embodiment have a (standard deviation of Feret diameter by SEM photograph) Z
- the coefficient of variation obtained by (average particle diameter of Feret diameter by SEM photograph) X 100 (%) is 40% or less. If this coefficient of variation exceeds 40%, the particle size distribution of the particles is too wide, the amount of aggregated particles is too large, or the amount of coarse particles is too large, and the dispersibility and the smoothness of the coating film when formed into a coating are poor .
- the composite black oxide particles of this embodiment have an L value of 20 or less, a value of 0.1 or less, b Preferably, the value is less than 0.1. If these values do not satisfy the above conditions, the hue having a low blackness and a hue having a strong reddish or yellowish color are inconvenient.
- complex black oxide particles of the present embodiment the sample after before performing the heat treatment of 180 ° C, 2 hours in the air, from the blackness and hue values, (AL 2 + A a + A b 2 )
- the ⁇ ⁇ value obtained by 1/2 is preferably 0.5 or less. If this ⁇ ⁇ exceeds 0.5, it will be inferior in oxidation resistance.
- the composite black oxide particles of the present embodiment have an L value of 35 or less, a value power of 0.5 or less, and b value power of 3.5 or less in a coloring power measurement using titanium oxide, as measured by a color difference meter. It is preferable. If these values do not satisfy the above conditions, the hue having a low blackness is also a problem as a black pigment having a strong reddish or yellowish tint.
- the method for producing black composite oxide particles according to the present embodiment is a method for preparing a metal hydroxide slurry by neutralizing and mixing a mixed aqueous solution of a metal salt prepared using a water-soluble salt of cobalt, copper, and manganese with an alkali hydroxide. , And the obtained metal hydroxide slurry is maintained at pHIO-13, oxidized at a temperature higher than 40 ° C and below 60 ° C to obtain a precursor slurry. It is characterized in that it is heated to a temperature of 150 ° C, aged, solid-liquid separated, and then heat-treated at a temperature of 400-700 ° C for more than 1 hour and 3 hours or less.
- the composition ratio of cobalt, copper, and manganese when preparing a mixed aqueous solution using a water-soluble salt of cobalt, copper, and manganese is important. Specifically, it is important that the molar ratio of copper / cobalt be 0.1-0.5, especially 0.15-0.45. It is also important that the molar ratio of manganese / cobalt be 0.2-1.0, especially 0.3-0.9.
- the temperature of the aqueous solution is preferably adjusted to 30 to 60 ° C. If the temperature is lower than 30 ° C, the undissolved metal salt is highly likely to remain in the aqueous solution. May be formed. If the temperature exceeds 60 ° C, it is assumed that the size of the nucleus becomes uneven and the size of the finally obtained composite oxide particles also varies.
- the metal salts of cobalt, copper, and manganese used for preparing the mixed aqueous solution are not particularly limited as long as they are water-soluble, such as sulfates, nitrates, carbonates, and chlorides. Use the one that suits your needs.
- the concentration of metal ions in the mixed aqueous solution may be adjusted to about 0.5-2 Omol / L in total ion concentration in consideration of productivity and the like.
- the aqueous solution comprising the water-soluble salts of cobalt, copper and manganese thus obtained is neutralized and mixed with alkali hydroxide to produce a hydroxide slurry of a mixture of cobalt, copper and manganese.
- the alkali hydroxide used for the neutralization is preferably caustic alkali such as sodium hydroxide or potassium hydroxide.
- any mixing mode may be used, but it is preferable to add an alkali hydroxide to an aqueous solution of a water-soluble salt of cobalt, copper, and manganese. If the addition of the alkali hydroxide is carried out for 60 to 120 minutes, hydroxide core particles having a uniform composition can be obtained. If the soaking time is shorter than 60 minutes, a hydroxide having an inhomogeneous composition is formed, and irregular particles are likely to be generated. When the time exceeds 120 minutes, a hydroxide having a uniform composition is formed, but the growth of nuclei proceeds, and irregular shaped particles tend to be easily generated.
- the pH of the obtained hydroxide slurry is adjusted within the range of 10 to 13, and an appropriate oxidizing agent (for example, hydrogen peroxide or the like) is added, and an oxygen-containing gas (preferably air) is blown.
- an appropriate oxidizing agent for example, hydrogen peroxide or the like
- an oxygen-containing gas preferably air
- the reaction temperature at this time should be higher than 40 ° C and not higher than 60 ° C. Grain below 40 ° C The particles may be atomized and the blackness may be reduced. When the temperature exceeds 60 ° C, irregular shaped particles are likely to be generated.
- the oxidation reaction is continued until the oxidation-reduction potential in the slurry reaches equilibrium.
- the slurry thus obtained is heated up to 80-150 ° C.
- the mixture is stirred at 80-100 ° C for 16 hours or treated at 100-150 ° C using an autoclave or the like to ripen the black composite oxide particles in the slurry.
- This aging is important for promoting the reaction to form granular particles.
- the aging temperature is less than 80 ° C (less than 100 ° C when using an autoclave)
- the reaction does not proceed easily, so that granular particles cannot be formed and irregular-shaped particles are likely to be generated.
- the temperature is higher than 100 ° C. (when using an autoclave, the temperature is higher than 150 ° C.), the particle size distribution of the obtained particles is unfavorably wide due to the high reaction rate.
- the slurry containing the aged black composite oxide particles is subjected to conventional filtration, washing, and dehydration, dried at 50 to 120 ° C., and then pulverized.
- the crushed black composite oxide particles are heat-treated at 400-700 ° C for more than 1 hour and not more than 3 hours to stabilize the morphology. If the heat treatment time is less than 1 hour, the morphology of the oxide is not stable, and the hue may be deteriorated. If the time exceeds 3 hours, the coloring power may be reduced due to the influence of interparticle sintering. If the temperature of the heat treatment is lower than 400 ° C, the morphology of the oxide may not be stable and the stability of various properties may be lacking.
- the atmosphere during the heat treatment may be in the air or under an inert gas atmosphere.
- the black composite iron oxide particles after the heat treatment may be partially aggregated. In that case, it is okay if the conventional crushing process is performed.
- the black pigment formed into a paint using the composite black oxide particles of the present embodiment, and the black matrix, plasma display, or plasma-addressed liquid crystal obtained using the black pigment have blackness, oxidation resistance, and firing. Excellent coating uniformity and gloss.
- the composite black oxide particles of the present embodiment are such that the composite black oxide particles of the first embodiment further contain silicon.
- the content of silicon is 0.1 to 3% by mass based on the oxide particles. . That is, the composite black oxide particles of the second embodiment are composed of oxides of cobalt, copper, manganese and silicon, the molar ratio of copper and cobalt is 0.1-0.5, and It has a molar ratio of 0.2 to 1.0 and contains silicon in an amount of 0.1 to 3 mass o / o with respect to the whole oxide particles.
- the composite black oxide particles of the present invention composed of oxides of cobalt, copper and manganese further contain silicon, the surface smoothness of the coating film when formed into a coating is improved. Is played. Further, there is an effect that thermal deterioration of hue is suppressed.
- the silicon may be present either inside the particle or on the surface of the particle. It is important that the content of silicon is 0.1 to 3.0% by mass, especially 0.2 to 2.0% by mass with respect to the oxide particles. If the amount is less than 0.1% by mass, the effect of improving the surface smoothness when a coating film is formed is poor. It lowers the surface smoothness and worsens blackness and hue.
- the composite black oxide particles of the present embodiment preferably have a reflectance (20 degrees) measured by a colorimeter of 40% or more, more preferably 60% or more. If the reflectance is less than 40%, the gloss of the coating film when formed into a paint will be inferior.
- the black composite oxide particles of the present embodiment are obtained by neutralizing and mixing a mixed aqueous solution of a metal salt prepared using a water-soluble salt of cobalt, copper, and manganese with an alkali hydroxide to obtain a metal hydroxide slurry,
- the obtained metal hydroxide slurry is oxidized while maintaining pHIO-13 to obtain a precursor slurry, and the obtained precursor slurry is adjusted to pH6-10 by adding an aqueous solution of a water-soluble silicate. It can be obtained by heat treatment at a temperature of 400-700 ° C after solid-liquid separation.
- the oxidation reaction of the metal hydroxide slurry it can be performed in the same manner as in the above-described manufacturing method according to the first embodiment.
- the oxidation reaction is continued until the oxidation-reduction potential in the slurry reaches equilibrium.
- the oxidation reaction results in a precursor slurry containing oxides of cobalt, copper, and manganese.
- An aqueous solution of a water-soluble silicate is added to the obtained precursor slurry.
- the precursor slurry is heated to 80-150 ° C, and then treated at 100-150 ° C using a car autoclave or the like which is stirred at 80-100 ° C for 16 hours.
- Sura The black composite oxide particles in the green may be aged.
- This aging is preferable because the reaction can proceed to form granular particles. If the treatment temperature at this time is lower than 80 ° C (less than 100 ° C when using an autoclave), the reaction does not proceed easily, so that granular particles cannot be formed and irregular particles are likely to be generated. Les ,. When the temperature exceeds 100 ° C (when using an autoclave, the temperature exceeds 150 ° C), the particle size distribution of the obtained particles is undesirably wide due to the high reaction rate.
- aqueous solution of a water-soluble silicate is added to the obtained precursor slurry, and the mixture is stirred and mixed while adjusting to pH 6-10.
- pH at the time of this addition is less than 6 or more than pHIO, the formation of a film on the particle surface hardly proceeds.
- the aqueous solution of the water-soluble silicate is added over 30 to 120 minutes, and the mixture is stirred and mixed over 30 to 120 minutes after the addition. After that, heat treatment is performed in the same procedure as in the manufacturing method according to the first embodiment to obtain target composite black oxide particles.
- the composite black oxide particles of the present invention can also be produced by adding a water-soluble silicon salt to the neutral salt. That is, the composite black oxide particles of the second embodiment neutralize a metal salt mixed aqueous solution prepared using an aqueous solution of a water-soluble salt of cobalt, copper, and manganese and an aqueous solution of a water-soluble silicate, and alkali hydroxide. After mixing, a metal hydroxide slurry was obtained, and the obtained metal hydroxide slurry was oxidized while maintaining the pHIO-13 to obtain a precursor slurry. — Can also be obtained by heat treatment at 700 ° C.
- the composite black oxide particles of the present embodiment are the composite black oxide particles of the first embodiment.
- the surface of the particles is coated with Al oxide. That is, the composite black oxide particles of the third embodiment are composed of oxides of cobalt, copper, and manganese, the molar ratio of copper and cobalt is 0.1-0.5, and the molar ratio of manganese / cobalt is Is 0.2-1.0, and the particle surface is coated with A1 oxide.
- the high electrical resistance of the composite black oxide particles is realized by covering the surface of the composite black oxide particles with the A1 oxide.
- A1 content Shi favored and 0.5 for the entire particle 05 3 Weight 0/0, in particular 0.1 2 2.8 wt% Re.
- the content is less than 0.05% by mass, the effect of increasing the desired electrical resistance is small, and when the content exceeds 3% by mass, the blackness and the dispersibility are reduced.
- a P or Si compound is contained in the coating of the particle surface because the electric resistance can be further improved while maintaining the dispersibility.
- the total content of A1 and P is preferably 0.1 to 6% by mass, and particularly preferably 0.4 to 4% by mass, based on the whole particles.
- the total content of A1 and Si is preferably 0.1 to 6% by mass, more preferably 0.4 to 4% by mass, based on the whole particles.
- the composite black oxide particles of the present embodiment have a high electric resistance.
- the electrical resistance of the composite black oxide particles is preferably 1 ⁇ 10 4 ⁇ cm or more.
- the electric resistance is less than 1 ⁇ 10 4 Qcm, it is difficult to improve the prevention of conduction between electrodes when used for black matrix applications.
- the black composite oxide particles of the present embodiment are obtained by neutralizing and mixing a mixed aqueous solution of a metal salt prepared using a water-soluble salt of cobalt, copper, and manganese with an alkali hydroxide to obtain a metal hydroxide slurry,
- the obtained metal hydroxide slurry is maintained at pHIO-13 and oxidized at a temperature higher than 40 ° C and below 60 ° C to obtain a precursor slurry, and the obtained precursor slurry is heated to 80-150 ° C.
- water-soluble aluminum salt aqueous solution was added to adjust the pH to 5-9, followed by solid-liquid separation, and heat at 400-700 ° C, over 1 hour, and 3 hours or less. Obtained by processing.
- the production according to the first embodiment described above is performed. It can be performed in the same manner as the method.
- the oxidation reaction is continued until the oxidation-reduction potential in the slurry reaches equilibrium.
- the temperature of the slurry thus obtained is raised to 80-150 ° C.
- a power of stirring at 80-100 ° C for 16 hours.
- the mixture is treated at 100-150 ° C using an autoclave or the like to ripen the black composite oxide particles in the slurry. This aging is important for allowing the reaction to proceed to form granular particles.
- the treatment temperature at this time is lower than 80 ° C (less than 100 ° C when using an auto turret), the reaction does not proceed easily, so that granular particles cannot be formed and irregular particles are generated. Cheap. If the temperature is higher than 100 ° C (or higher than 150 ° C when using an auto turret), the particle size distribution of the obtained particles is undesirably wide due to the high reaction rate.
- An aqueous solution of a water-soluble aluminum salt is added to the aged black composite oxide slurry to adjust the pH to 5-9.
- the addition amount of the water-soluble aluminum salt may be adjusted so that the content of A1 is 0.05 to 3% by mass based on the whole particles.
- an aqueous solution of a water-soluble phosphorus compound or an aqueous solution of a water-soluble silicon compound may be added to adjust the pH to 6-10.
- the A1 oxide layer containing the P or Si conjugate can be coated on the particle surface.
- the total amount of A1 and P or the total content of A1 and Si in the coating of the surface of the obtained composite black oxide particles is within the range described above, with respect to the amount of the phosphorus conjugate or silicon compound added. It should be adjusted as follows.
- the aqueous solution of a water-soluble phosphorus compound or an aqueous solution of a water-soluble silicon compound is preferably gradually added over a period of 30 to 120 minutes, similarly to the case of adding kashimi with an aqueous solution of a water-soluble aluminum salt. After that, heat treatment is performed in the same procedure as in the production method according to the first embodiment to obtain the desired composite black oxide particles.
- the pH after the addition of the water-soluble aluminum salt and before the addition of the aqueous solution of the water-soluble phosphorus compound or the aqueous solution of the water-soluble silicon compound is as follows: For the same reason as above, it is preferable to adjust the range of 5-9.
- water-soluble phosphorus compound used herein include phosphates such as sodium phosphate, potassium phosphate, and ammonium monophosphate, orthophosphoric acid, phosphorous acid, and the like.
- water-soluble silicon compound include sodium silicate.
- the black pigment formed into a paint using the composite black oxide particles of the present embodiment, and the black matrix, plasma display, or plasma-addressed liquid crystal obtained using the black pigment have blackness, oxidation resistance, and calcination. Excellent film gloss and high electrical resistance.
- Blackness and hue Measurement of blackness of powder Pio was carried out in accordance with IS K5101-1991. Specimen 2. 1.4g of castor oil was added to Og and kneaded with a Hoover-type muller. 7.5 g of lacquer was added to the kneaded sample 2.Og, and after further kneading, it was applied on mirror-coated paper using a 4 mil applicator. After drying, blackness (L value) and hue (a value, MS) were measured with a color difference meter (manufactured by Tokyo Denshoku Co., Ltd., color analyzer TC-1800).
- Composite oxide particles were obtained in the same manner as in Example 1-1, except that the manufacturing conditions were changed as shown in Table 1-1. Various properties of the obtained composite oxide particles were evaluated in the same manner as in Example 11-11. The results are shown in Tables 1-2.
- Example 1-1 830 224 324 0 45 90 50 2 Example 1-2 492 179 256 0 45 90 50 2
- Example 1-3 1124 156 211 0 45 90 50 2 Comparative example 1-1 225 245 350 0 45 90 50 2
- Comparative example 1-2 830 0 0 0 45 90 50 2 Comparative example 1-3 0 245 350 784 25 60 30 1 Comparative example 1-4 742 202 0 0 50 60 50 2 Comparative example 1-5 759 0 260 0 50 60 50 2
- the composite oxide particles of Comparative Examples 11 to 1 were irregularly shaped particles due to a large ratio of copper Z cobalt and manganese Z cobalt, and had excellent coloring power, but had blackness, hue, Poor surface smoothness when the coating is formed into a coating.
- the composite oxide particles having a composition of chromium, copper, and manganese of Comparative Example 13 are inferior in blackness, coloring power, and surface smoothness when painted.
- the composite oxide particles having the composition of cobalt and copper of Comparative Examples 1-4 are inferior in blackness, hue, coloring power, and surface smoothness when painted.
- the composite oxide particles having a composition of cobalt and manganese of Comparative Example 15 are inferior in blackness, hue, coloring power, and surface smoothness when formed into a paint.
- Example 1-1 It carried out similarly to Example 1-1. However, the specular reflectance was measured at 20 degrees.
- the black composite oxide particles of Examples are excellent in blackness and hue in the initial stage and after the oxidation resistance test, and particularly in the surface smoothness when a coating film is formed. Are better. Although not shown in the table, as a result of XRD measurement, it was confirmed that the composite black oxide particles of the examples had at least a spinel-type or inverse spinel-type crystal structure.
- Example 11 The same operation as in Example 1 was performed. However, the specular reflectance was measured at 20 degrees. The electrical resistance was measured by the following method.
- Electric resistance 10 g of a sample was placed in a holder, and a pressure of 600 kg / cm 2 was applied thereto. After forming into a 25 mm ⁇ tablet, an electrode was attached, and measurement was performed under a pressure of 150 kg / cm 2 .
- the electrical resistance of the composite oxide particles was determined by calculating the thickness, cross-sectional area, and resistance of the sample used for the measurement. The measurement conditions were 25 ° C and 55% RH.
- Composite oxide particles were obtained in the same manner as in Example 3-1 except that the production conditions were changed as shown in Table 3-1. Various characteristics of the obtained composite oxide particles were evaluated in the same manner as in Example 3-1. The results are shown in Tables 3-2 and 3-3.
- the black composite oxide particles of the examples had blackness, blackness and hue at the initial stage and after the oxidation resistance test, dispersibility at the time of coating, and coating at coating. It has excellent surface smoothness and a sufficiently high electric resistance. Although not shown in the table, as a result of XRD measurement, it was confirmed that the composite black oxide particles of the examples had at least a spinel-type or reverse spinel-type crystal structure.
- the black composite oxide particles according to the present invention are more excellent in blackness, oxidation resistance, dispersibility at the time of coating, and surface smoothness of the coating when the coating is formed. It is suitable as a black pigment for paints, inks, toners, and rubbers and plastics. In particular, it is suitable for forming a black matrix coloring composition, a black electrode for a front plate of a plasma display, a plasma addressed liquid crystal or the like, and a light shielding layer. In addition, a black matrix or plasma formed by a black paint using such black composite oxide particles is used. Dress liquid crystal is excellent in blackness, oxidation resistance, uniformity of fired film and glossiness
- the black composite oxide particles of the present invention containing silicon are excellent not only in terms of blackness, hue and heat resistance, but also in the form of a paint, and the surface smoothness of the paint film when applied. Excellent.
- a black matrix, a plasma display, and a plasma addressed liquid crystal formed of a black paint using such black composite oxide particles have excellent blackness, hue and heat resistance, and uniformity and glossiness of a fired film. .
- the black composite oxide particles of the present invention in which the particle surfaces are coated with the A1 compound, have a higher blackness, oxidation resistance, dispersibility when forming a paint, and a higher degree of coating when the paint is formed. Excellent surface smoothness of coating film.
- it since it has a high electric resistance, it is suitable for forming a black matrix coloring composition, a black electrode on a front plate of a plasma display, a plasma addressed liquid crystal and the like, and a light shielding layer.
- a black matrix, a plasma display, and a plasma-addressed liquid crystal formed of a black paint using such black composite oxide particles not only have excellent blackness, oxidation resistance, and glossiness of a fired film, but also have a high electric power. Indicates resistance
Abstract
Description
Claims
Priority Applications (2)
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US10/576,125 US7465495B2 (en) | 2003-10-15 | 2004-10-14 | Composite black oxide particle, method for producing same, black coating material and black matrix |
EP04792364A EP1681271A1 (en) | 2003-10-15 | 2004-10-14 | Composite black oxide particle, method for producing same, black coating material and black matrix |
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JP2003355596 | 2003-10-15 | ||
JP2003-355596 | 2003-10-15 | ||
JP2004-054586 | 2004-02-27 | ||
JP2004054586A JP4336224B2 (ja) | 2004-02-27 | 2004-02-27 | 複合黒色酸化物粒子、その製造方法、黒色塗料及びブラックマトリックス |
JP2004-066201 | 2004-03-09 | ||
JP2004066201A JP4336227B2 (ja) | 2004-03-09 | 2004-03-09 | 複合黒色酸化物粒子、その製造方法、黒色塗料及びブラックマトリックス |
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US (1) | US7465495B2 (ja) |
EP (1) | EP1681271A1 (ja) |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2007063816A1 (ja) * | 2005-11-30 | 2007-06-07 | Toray Industries, Inc. | ガラスペーストおよびそれを用いたディスプレイの製造方法、ならびにディスプレイ |
WO2008120616A1 (ja) * | 2007-03-30 | 2008-10-09 | Mitsui Mining & Smelting Co., Ltd. | 黒色複合酸化物粒子、黒色スラリー、黒色ペースト、及びブラックマトリックス |
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KR20070118669A (ko) * | 2005-03-31 | 2007-12-17 | 미츠이 마이닝 & 스멜팅 콤파니 리미티드 | 흑색을 띤 복합 산화물 입자 |
EP3594292B1 (en) * | 2006-12-19 | 2021-06-23 | Seiko Epson Corporation | Inkjet recording method |
EP2365038B1 (en) | 2006-12-19 | 2013-03-13 | Seiko Epson Corporation | Pigment dispersion, ink composition, inkset, and recording device |
JP2010168411A (ja) * | 2009-01-20 | 2010-08-05 | Seiko Epson Corp | 表面処理顔料、インク組成物、及びインクジェット記録方法 |
JP2011140609A (ja) * | 2009-04-07 | 2011-07-21 | Seiko Epson Corp | 耐水化アルミニウム顔料および耐水化アルミニウム顔料分散液、それらを含有する水性インク組成物、ならびに耐水化アルミニウム顔料分散液の製造方法 |
JP2011132483A (ja) | 2009-04-07 | 2011-07-07 | Seiko Epson Corp | 耐水化アルミニウム顔料分散液およびそれを含有する水性インク組成物、ならびに耐水化アルミニウム顔料分散液の製造方法 |
JP2010265422A (ja) * | 2009-05-18 | 2010-11-25 | Seiko Epson Corp | 表面処理顔料、インク組成物、及びインクジェット記録方法 |
CN102958869B (zh) | 2010-06-30 | 2015-08-26 | 国际壳牌研究有限公司 | 使用含有钴和锰的催化剂从合成气制备烯烃的方法 |
EP2805766A4 (en) * | 2012-01-19 | 2015-08-05 | Toyota Motor Co Ltd | EMISSION CONTROL CATALYST AND METHOD FOR THE PRODUCTION THEREOF |
EP3885318A1 (de) * | 2020-03-27 | 2021-09-29 | LANXESS Deutschland GmbH | Farbstarke manganferrit-farbpigmente |
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GB9720593D0 (en) * | 1997-09-26 | 1997-11-26 | Exxon Chemical Patents Inc | Catalysts and processes using them |
JP2000162643A (ja) | 1998-11-30 | 2000-06-16 | Matsushita Electric Ind Co Ltd | 液晶表示装置及びその製造方法 |
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2004
- 2004-10-14 US US10/576,125 patent/US7465495B2/en not_active Expired - Fee Related
- 2004-10-14 WO PCT/JP2004/015132 patent/WO2005037716A1/ja active Application Filing
- 2004-10-14 KR KR1020067007016A patent/KR100818469B1/ko not_active IP Right Cessation
- 2004-10-14 EP EP04792364A patent/EP1681271A1/en not_active Withdrawn
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JPH09237570A (ja) * | 1996-02-28 | 1997-09-09 | Dainichiseika Color & Chem Mfg Co Ltd | ブラックマトリックス用着色組成物、ブラックマトリックスの製造方法及び遮光性ブッラクマトリックスを付した発光型フラットパネルディスプレイパネル |
JP2002020119A (ja) * | 2000-07-03 | 2002-01-23 | Mitsui Mining & Smelting Co Ltd | 黒色複合酸化物粒子及びその製造方法 |
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WO2007063816A1 (ja) * | 2005-11-30 | 2007-06-07 | Toray Industries, Inc. | ガラスペーストおよびそれを用いたディスプレイの製造方法、ならびにディスプレイ |
WO2008120616A1 (ja) * | 2007-03-30 | 2008-10-09 | Mitsui Mining & Smelting Co., Ltd. | 黒色複合酸化物粒子、黒色スラリー、黒色ペースト、及びブラックマトリックス |
JP2008247705A (ja) * | 2007-03-30 | 2008-10-16 | Mitsui Mining & Smelting Co Ltd | 黒色複合酸化物粒子、黒色スラリー、黒色ペースト、およびブラックマトリックス |
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US7465495B2 (en) | 2008-12-16 |
KR100818469B1 (ko) | 2008-04-02 |
KR20060129174A (ko) | 2006-12-15 |
US20070128438A1 (en) | 2007-06-07 |
EP1681271A1 (en) | 2006-07-19 |
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