WO2006070795A1 - 黒色系酸窒化チタン - Google Patents
黒色系酸窒化チタン Download PDFInfo
- Publication number
- WO2006070795A1 WO2006070795A1 PCT/JP2005/023888 JP2005023888W WO2006070795A1 WO 2006070795 A1 WO2006070795 A1 WO 2006070795A1 JP 2005023888 W JP2005023888 W JP 2005023888W WO 2006070795 A1 WO2006070795 A1 WO 2006070795A1
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- WIPO (PCT)
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- titanium
- titanium oxynitride
- range
- oxynitride
- atom
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9646—Optical properties
- C04B2235/9661—Colour
Definitions
- the present invention relates to black titanium oxynitride.
- Titanium oxynitride is composed mainly of titanium, oxygen, and nitrogen, and is generally expressed as TiNxOy. It is also a compound called titanium black, and has black color and conductivity. It is used in inks, cosmetics, etc. or as a conductivity imparting agent in films, fibers, toners, magnetic recording media and the like.
- Patent Document 1 discloses that titanium dioxide powder is heated at a temperature of 550 to 950 ° C. under a flow of ammonia gas, and oxygen is 4 to 30% by weight, nitrogen is 5 to 20% by weight.
- titanium compound used as a black pigment titanium nitride containing titanium mononitrogen as a main component and generally represented by TiN is also known.
- Patent Document 2 discloses a temperature of 700 to 1500 ° C. A TiN powder is produced by reacting tetrasalt ⁇ titanium gas and ammonia gas. Next, a nitrogen-oxygen mixed gas is flowed to oxidize the surface layer to titanium oxynitride.
- Patent Document 1 Japanese Patent Publication No. 3-51645
- Patent Document 2 JP-A-64-37408
- titanium oxynitride or titanium nitride as a black pigment, the pigment properties such as blackness, coloring power, hiding power (light-shielding property), light resistance, durability, and dispersibility are improved according to various applications. Is required.
- titanium oxynitride in particular, when blended in the black matrix of color filters used in plasma display panels and color liquid crystal display devices, commercially available titanium black does not provide the desired concealability (light shielding). There is a need for further improvements.
- Patent Document 1 it is described that when the reaction temperature exceeds 950 ° C, the sintering of the powder becomes remarkable, the particles are coarsened, and the pigment properties are deteriorated. It is difficult to improve the pigment properties even if the value is increased.
- titanium nitride Although the titanium oxide oxynitride is formed by partially oxidizing the surface layer portion of the TiN powder in the above-mentioned Patent Document 2, the oxidation in the air gradually progresses, so that the pigment property is improved. There are problems with stability.
- titanium oxynitride produced by reacting titanium dioxide or the like with ammonia gas or the like is contained. Visible light with black color due to its size effect by increasing the amount to 17 wt% or more and less than 23 wt% and reducing the size of the crystallites constituting the titanium oxynitride particles to a range of 17 to 25 nm
- it also uses reflection of visible light due to high nitridation to have excellent concealability (light-shielding property).
- such titanium oxynitride has pigment properties such as blackness, especially oxidation stability As a result, the present invention has been completed.
- the present invention provides a composition formula: TiNxOynSiO (wherein Ti is a titanium atom, N is nitrogen)
- n represents the molar ratio of SiO to TiNxOy, where n is 0 ⁇ n ⁇ 0.05
- the force also includes a nitrogen atom represented by N in the range of 17 wt% to less than 23 wt%, and the crystallite diameter measured using an X-ray diffractometer is in the range of 17 to 25 nm It is a black titanium oxynitride characterized by being.
- the titanium oxynitride of the present invention has excellent hiding properties (light-shielding properties), and has pigment properties such as blackness and oxidation stability, and thus is used as a black pigment in various applications.
- it is used as a black pigment to be blended in the black matrix of color filters used in plasma display panels and color liquid crystal display devices.
- an optical member that blocks visible light other than these for example, glass, lenses, films, etc. Used in combination You can also.
- the titanium oxynitride of the present invention has excellent conductivity due to its high degree of nitridation, its use can be expanded as a conductivity imparting agent.
- the titanium oxynitride of the present invention is represented by TiNxOy, and if necessary, the acid oxide represented by SiO.
- the silicon oxide forms a mixture with titanium oxynitride! It may be attached to the surface of titanium oxynitride particles, or may be formed into a composite with titanium oxynitride or may be dissolved in the titanium oxynitride particles.
- the titanium oxynitride of the present invention is represented by a thread and formula: TiNxOy'nSiO, where Ti is a titanium atom, and N is
- Nitrogen atom O represents oxygen atom
- Si silicon atom
- X represents the ratio of nitrogen atom to titanium atom
- y represents the ratio of oxygen atom to titanium atom
- n represents the ratio of SiO to TiNxOy.
- x and y can each be a real number greater than 0 and less than 2, but the ratio y / x between X and y is in the range of 0.10 to 0.60 for the desired high nitridation degree.
- a range force S of 0.15 to 0.50 is more preferable, a range force S of 0.15 to 0.40 is more preferable, and a range of 0.15 to 0.30 is most preferable.
- titanium oxynitride may or may not contain an oxygen silicate, the oxynitride can prevent sintering, promote nitridation, and titanium oxynitride during the production of titanium oxynitride.
- Oxidation stability of titanium oxynitride is expected to have a dispersion effect when dispersed in a resin or solvent, whether it is an anhydrous acid or an adsorbed moisture
- titanium oxynitride which is in a hydrous silicon oxide state, is used when producing at a high temperature, it is likely to be an anhydrous acid silicon. It is thought that oxidic acid exists in the state of SiO
- a portion of the oxygen nitrile may be nitrided to produce oxynitride or nitride.
- a silicon oxynitride or a silicon nitride may be present.
- the molar ratio of the contained oxide oxide n is a force that can take a real number in the range of 0 ⁇ n ⁇ 0.05, preferably in the range of 0.001 ⁇ n ⁇ 0.04, and in the range of 0.003 ⁇ n ⁇ 0.03 Power better than ⁇ ! / ⁇ .
- Titanium and silicon atoms are analyzed by ICP emission spectroscopy, oxygen atoms are analyzed by inert gas carrier melting infrared absorption method, and nitrogen atoms are analyzed by carbon / hydrogen / nitrogen analyzer. Calculate x, n. If a key atom is present, Assuming that the elementary atoms are bonded to oxygen atoms to form SiO
- Analytical value TiNxOy is the value obtained by subtracting the oxygen atom that forms SiO by binding to the key atom.
- the value y of the oxygen atom is calculated.
- TiNxOynSiO has a nitrogen content of N not less than 17 wt% and less than 23 wt%
- the range of 19 to 22% by weight is more preferable 18 to 22% by weight, more preferably 20 to 22% by weight, and more preferably 22% by weight or less.
- the nitrogen content is 17% by weight or more, especially when it exceeds 20% by weight, it will have a reddish black color.
- it when it is added to the coating film, it has a metallic luster and a high visible light reflectance. , The concealing property (light shielding property) is increased.
- the composition of titanium nitride TiN contains about 23% by weight of nitrogen, but the nitrogen content of the titanium oxynitride of the present invention is less than that.
- the oxygen content represented by O in TiNxOy is preferably in the range of 0.5 to 15% by weight, so that oxidation does not easily proceed with time and is stable, and preferably 1 to 13% by weight.
- % Range is more preferred 2 to: L 1% by weight range is more preferred 3 to 10% by weight range is more preferred 4 to 9% by weight is most preferred.
- X-ray diffraction using Cu o; ray
- TiNxOy is between 0.85 and 1
- the larger the value of x the more the peak position shifts to the lower angle side.
- X force is about 0.95
- 2 ⁇ is about 42.9 °
- X force If it is about 93, 2 ⁇ force will be about 3.0 °, and if x force is about 0.89, it will be about 2 ° force 3.2 °.
- the main (first) peak of the titanium oxynitride of the present invention is different from the peak position (42.6 °) of titanium nitride, and on the higher angle side, for example, in the range of 42.7 ° to 43.5 ° Therefore, the titanium oxynitride of the present invention is different from titanium nitride or a partially oxidized surface thereof.
- Titanium oxynitride is titanium dioxide such as titanium dioxide, hydrous titanium dioxide, titanium hydroxide, and low-order titanium oxides such as TiO, Ti 2 O, and Ti 2 O.
- X-rays derived from titanium dioxide, etc. when titanium oxide used as a starting material remains because it is obtained by heating and baking acid oxides in the presence of ammonia gas, amine gas, etc.
- impurities such as titanium dioxide as an impurity
- the peak position of X-ray diffraction of titanium dioxide appears between 25-26 ° for anatase-type titanium dioxide and 27-28 ° for rutile-type titanium dioxide.
- the X-ray diffraction peak of oxycaine can not be confirmed even when it exists in a considerable amount.
- the half-width of the peak can be used to determine the size of the crystallites that make up the titanium oxynitride particles using the Scherrer equation of Equation 1.
- the crystallite diameter is 26 nm. It is important that the titanium oxynitride of the present invention has a crystallite diameter force in the range of Sl7 to 25 nm. The range of 19 to 24 nm is more preferable because it has a relatively high blackness even if the height is increased, and the range of 19.5 to 23 nm is more preferable. The range of 20 to 22 nm is most preferable. .
- D is the calculated crystallite diameter (A)
- ⁇ is the X-ray wavelength, Cu o; uses the line wavelength of 1.54 A.
- 13 is the half-width of the main (first) peak (Radian), 0 indicates the reflection angle.
- Titanium oxynitride has a blackish color. In addition to pure black, it has a black color such as black with a blue taste, black with a purple color, black with a purple color, black with a red color, and black with a brown color. Other colors may also be present.
- a black color such as black with a blue taste, black with a purple color, black with a purple color, black with a red color, and black with a brown color. Other colors may also be present.
- For the brightness and hue of titanium oxynitride place 1.5 g of the sample in a glass round cell (Nippon Denshoku, part No. 1483), and use the color difference meter (Nippon Denshoku Color Meter ZE2000) from the bottom of the cell. Measure the color and obtain it using the Lab color system. The blackness is represented by the Lab color system brightness index L value. The smaller the L value, the stronger the blackness.
- the L value has a blackness of about 2 to 20. Preferably about 8 to 13.
- the Lab color system a value and b value obtained in the same way as the L value are indices representing hue saturation. The greater the a value, the more red and the more negative the green color. It shows that the b value increases to the positive side, and the yellow value increases and the b value increases to the negative side. Show.
- the titanium oxynitride of the present invention can have a hue having an a value of about 2 to 5 and a b value of about 1 to 5, for example.
- titanium oxynitride has a blackish color and naturally absorbs visible light, it can be considered to utilize visible light reflection in addition to visible light absorption in order to further improve the concealability. . That is, the higher the reflectance in the long wavelength region of visible light where the minimum value of the reflectance in the wavelength range of 400 to 800 nm is small, the higher the shielding property (light shielding property) can be obtained.
- the shielding property light shielding property
- 0.3g of titanium oxynitride powder was packed in a cylindrical cell (diameter 16mm, JASCO PSH-001 type) using an ultraviolet-visible spectrophotometer (V-570 manufactured by JASCO).
- the reflection spectrum of visible light (using barium sulfate powder as a comparative sample), there is a wavelength of light that exhibits a minimum reflectance in the wavelength range of 400 to 800 nm, and light longer than that is It is generally said to reflect. For this reason, the reflection of visible light can be increased by shifting the wavelength of light exhibiting the minimum value of the reflectance to the lower wavelength side due to the composition change of titanium oxynitride or the like.
- the titanium oxynitride of the present invention has a high degree of nitridation and a small crystallite diameter.
- the wavelength showing the minimum value of the reflectance is about 550 nm or less, a desired reflection effect can be obtained, and the preferred range is about 490 nm or less.
- the minimum value of the reflectance varies depending on the crystallite diameter, specific surface area, degree of nitridation, etc. of titanium oxynitride, but the titanium oxynitride of the present invention has a specific crystallite diameter, specific surface area, and nitrogen content. Therefore, the minimum value of the reflectance can be reduced, and the absorptance at the wavelength can be increased.
- the minimum value of reflectance measured in the wavelength range of 400 to 800 nm is preferably 11.5% or less.
- the reflectance of visible light is represented by the reflectance at a wavelength of 650 nm (red light)
- at least about 13% is preferable, and at least about 14% is more preferable.
- Particle diameter of titanium oxynitride TiNxOynSiO particles have a particle size of 0.02-0.5 when observed with an electron microscope.
- the range of m is preferable because it has excellent concealability.
- the range of 0.02-0.25 m is more preferable, the range force of 0.03 to 0.2 m S is more preferable, 0.03 to 0 A range force S of 1 m is most preferred.
- the oxygen oxide is attached to the surface of the titanium oxynitride particles.
- the specific surface area of the titanium oxynitride as measured by the BET method 5 to 30 m 2 range variance of easy and so good hiding properties preferably fixture 10 to 25 2 / g of Zg to certain When ⁇ binder in the range of It is more preferable that
- titanium oxynitride When titanium oxynitride is used as a conductivity-imparting material, the lower the powder resistance, that is, the higher the conductivity, the better. On the other hand, when used as a black matrix for a color filter, an IPS (in-plane switching) color display method, or a small color display method that is not an IPS method, erroneously indicates that the black matrix is conductive. Operation is likely to occur and is not preferable.
- the powder resistance of titanium oxynitride used in such applications is preferably 1 ⁇ ′cm or more, more preferably 10 ⁇ ′cm or more.
- the titanium oxynitride of the present invention can be produced by raising the temperature of the apparatus charged with titanium oxide in the presence of a nitrogen-containing reducing agent to a temperature in the range of about 750 to 1200 ° C. and heating and firing.
- the heating and baking temperature is preferably in the range of about 850 to: L 100 ° C, more preferably about 950 to 1050 ° C, and most preferably about 970 to L000 ° C.
- titanium oxynitride having a high degree of nitriding and a small crystallite diameter can be obtained by optimizing the heating and firing temperature. If the heating and firing temperature is lower than the above range, nitriding is difficult to proceed and it is difficult to obtain the desired titanium oxynitride.
- the heating and firing time varies depending on the amount of titanate or nitrogen-containing reducing agent, and is appropriately set. However, about 1 to 20 hours is appropriate for operation, and about 3 to 10 hours is preferable. In addition, it may be cooled after heating and firing, and then repeated heating and firing.
- Heating and baking equipment includes fluidized bed equipment, rotary kilns, tunnel kilns, etc. A known one can be used, and a rotary kiln is particularly preferable.
- the nitrogen-containing reducing agent for example, ammonia, alkylamines such as methylamine and dimethylamine, hydrazine-based compounds such as hydrazine, hydrazine sulfate, and hydrazine hydrochloride can be used, and one or more of these can be mixed. May be used.
- ammonia and alkylamine are preferable because they can be made into a gaseous state and brought into contact with titanic acid oxide and easily reacted uniformly.
- hydrocarbon is preferable because it reacts with oxygen in the titanium oxide to become carbon dioxide, and generation of water that suppresses the nitriding reaction can be suppressed.
- the titanic acid salt referred to in the present invention includes not only ordinary rutile type (R type) and anatase type (A type) titanium dioxide, but also hydrated titanium oxide, hydrous titanium oxide, titanium hydroxide, It is a compound including low-order titanium oxide such as TiO, TiO, and TiO. Titanium dioxide is an example
- hydrated titanium oxide (or titanium hydroxide) is heated and fired at a temperature of about 800 to 1000 ° C in an atmosphere of air or oxygen-containing gas or in an inert gas atmosphere such as nitrogen or argon. Can be obtained.
- titanium oxide ore, titanium-containing ores such as illuminite or titanium slag are powdered as necessary, and the titanium component and sulfuric acid are reacted while being dissolved in sulfuric acid to produce titanyl sulfate (TiOSO ), Static classification, filtration,
- titanium oxide is heated and calcined in the presence of a nitrogen-containing reducing agent, nitriding is difficult to proceed in the presence of water. It is more preferable to use titanium. Anatase type titanium dioxide is more preferable than rutile type because it is more easily nitrided.
- the particles when the surface of the titanic acid oxide particles is coated with an oxygen key and then heated and fired, the particles are difficult to sinter even at a high temperature within the above range. Since it is difficult to produce rutile type titanium diacid titanium, fine titanium oxynitride in which nitriding easily proceeds is more easily obtained, which is preferable.
- the acid can be coated as a porous acid or a dense acid, but when it is coated as a dense acid, it has the effect of suppressing sintering. It is easy to be preferred.
- the coating amount of oxycaenium is the same as that of TiNxOy obtained by heating and firing. It is sufficient if the molar ratio is expressed in the range of 0 ⁇ n ⁇ 0.0.05.
- the range of 0.001 ⁇ n ⁇ 0.04 is preferred.
- the range of 0.003 ⁇ n ⁇ 0.03 Is more preferable. If the coating amount of the silicon oxide is less than the above range, it is difficult to obtain a desired sintering inhibiting effect, and if it is too much, nitriding is difficult to proceed.
- the slurry is preferably adjusted to a pH of 9 to 10.5 while maintaining the slurry of titanic acid salt at a temperature in the range of 80 to 100 ° C. After adjusting to the range and rapidly adding sodium silicate, neutralize with pH in the range of 9-: LO. 5 and then hold the temperature in the range of 80-100 ° C for 50-60 minutes Is.
- the silicate is gradually added over 30 to 120 minutes, neutralized, and then held for 60 to 120 minutes while maintaining the slurry temperature.
- the silicate sodium silicate, potassium silicate, etc. can be used, and as the neutralizing agent, an inorganic compound such as sulfuric acid or hydrochloric acid, or an acidic compound such as organic acid such as acetic acid or formic acid, etc. Can do.
- the oxygen key it is preferably dehydrated, washed, and subjected to a heat baking process.
- the method for coating the porous oxide layer was to neutralize the sodium titanate slurry while maintaining the temperature of the titanate slurry at a temperature of 70 ° C or less, and then 70 ° C. Holds the temperature below C for 30 minutes or less.
- the titanium oxynitride After producing the titanium oxynitride, if necessary, it may be dry pulverized by a known method or may be made into a slurry, followed by wet pulverization, dehydration, drying, and dry pulverization.
- Vertical sand mills and horizontal sand mills are used for wet grinding
- band heaters and notch heaters are used for drying
- impact mills such as hammer mills and pin mills for dry grinding
- grinding mills such as crushers.
- Jet mills, snail mills and other airflow crushers, and spray dryers can be used!
- the surface of the titanium oxynitride particles of the present invention has an affinity with a resin binder, At least one selected from an inorganic compound and an organic compound may be coated for the purpose of improving the stability with time and improving productivity.
- the inorganic compound include an aluminum compound, a key compound, a zirconium compound, a tin compound, a titanium compound, an antimony compound, and the like. They can also be used in combination by laminating coatings or mixing two or more inorganic compounds. More preferably, these inorganic compounds are at least one selected from oxides, hydroxides, hydrated oxides, and phosphates.
- Examples of the organic compound include polyvalent alcohol, alkanolamine or a derivative thereof, an organic ketone compound, a higher fatty acid or a metal salt thereof, and an organic metal compound.
- polyhydric alcohol includes trimethylolethane, trimethylolpropane, tripropanolethane, pentaerythritol and the like.
- alkanolamines include triethanolamine and tripropanolamine.
- organosilicon compounds include (a) polysiloxanes (dimethylpolysiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane, dimethylpolysiloxanediol, alkyl-modified silicone oil, alkylaralkyl-modified silicone).
- Organometallic compounds include isopropyl triisostearoyl titanate, isopropyl tris (dioctyl pyrophosphate) titanate, tetra (2,2-diallyloxymethyl-1-butyl) bis (ditridecyl) phosphine.
- Titanium coupling agents such as itotitanate, bis (dioctylpyrophosphate) oxyacetate titanate, bis (dioctylpyrophosphate) ethylene titanate, isopropyltri (N-amidoethinole'aminoethyl) titanate, acetate alkoxyaluminum -Aluminum coupling agents such as umdiisopropylate, and zirconium compounds such as zirconium tributoxy acetylacetonate and zirconium tributoxy systemate. These can be coated alone or in combination of two or more.
- the coating amount can be set as appropriate, but it is preferably in the range of about 0.01 to 30% by weight relative to titanium oxynitride, and the range of about 0.05 to 10% by weight is more preferred. 0.1 to 5 A range of about weight% is more preferred.
- a known method such as a wet method or a dry method is used, for example, when titanium oxynitride is dry pulverized, slurried, or wet pulverized. It can be carried out.
- the surface treatment is performed by a wet method, it is preferable to wet-grind titanium oxynitride before or during the treatment.
- the surface treatment by the wet method can be carried out in either an aqueous system or a solvent system, but the aqueous system is preferable in terms of environment, cost and equipment.
- titanium oxynitride is slightly oxidized under the influence of water itself or dissolved oxygen in the water, so hydrazine, sodium borohydride, formaldehyde, tartaric acid, It is preferable to wet-grind in the presence of reducing agents such as glucose, sodium hypophosphite, and N—N-jetildaricin sodium.
- the black titanium oxynitride of the present invention When the black titanium oxynitride of the present invention is incorporated as a black pigment or as a conductivity imparting agent into a resin such as a coating, a plastic molding such as an ink or a film, its excellent shielding performance (light shielding performance), black performance or It can be set as the resin composition using electroconductivity.
- the black titanium oxynitride of the present invention is blended in an arbitrary amount, preferably 20% by weight or more, and in addition, a composition forming material used in each field is blended.
- Various additives may be blended.
- a film-forming material or ink film-forming material a solvent, a dispersant, a pigment, a filler, a thickener, a flow control agent, a leveling agent, a curing agent, a crosslinking agent, a curing catalyst, and the like are blended.
- the film forming material include organic components such as acrylic resin, alkyd resin, urethane resin, polyester resin, and amino resin, and inorganic components such as organosilicate and organotitanate.
- urethane resin, acrylic resin, polyamide resin, vinegar resin resin, chlorinated propylene resin, and the like can be used.
- thermosetting resin room temperature curable resin
- ultraviolet curable resin Various materials such as thermosetting resin, room temperature curable resin, and ultraviolet curable resin can be used as the coating film forming material and ink film forming material. If UV curing is used, and a photopolymerization initiator or photosensitizer is blended and cured by irradiation with UV light after coating, the substrate is not subjected to heat load and has excellent hardness and adhesion. Since a coating film is obtained, it is preferable.
- plastic moldings plastics, pigments, dyes, dispersants, lubricants, antioxidants, UV absorbers, light stabilizers, antistatic agents, flame retardants, bactericides, etc. It is kneaded with titanium oxynitride and formed into any shape such as film.
- Plastics include thermoplastic resins such as polyolefin resin, polystyrene resin, polyester resin, acrylic resin, polycarbonate resin, fluorine resin, polyamide resin, cellulose resin, polylactic acid resin, phenol resin, etc.
- Thermosetting resin such as resin and urethane resin can be used.
- Hydrous diacid titanium dioxide is suspended in 300 liters of TiO equivalent in 1 liter of water to form a slurry.
- the pH of the slurry was adjusted to 10 with an aqueous sodium chloride solution, and then the slurry temperature was heated to 70 ° C., and then an aqueous sodium silicate solution was added dropwise for 2 hours. Subsequently, after the slurry temperature was heated to 90 ° C., dilute sulfuric acid was added dropwise for 2 hours to neutralize the pH by 5 mm, and the mixture was further maintained for 30 minutes. Thereafter, it was dehydrated and washed, and further baked at 850 ° C. in the air for 5 hours to obtain a titanium oxide dioxide coated with a dense oxide silicon (0.3 wt% as SiO). The obtained diacid titanium is It was a natase type.
- this titanium oxide-coated titanium dioxide was placed in a quartz tube with an inner diameter of 7.5 cm, and the quartz tube was placed at 980 ° C while ammonia gas was vented at a flow rate of 10 liters Z. For 6 hours.
- the obtained product is cooled to 100 ° C. under the same atmosphere, and further allowed to cool to room temperature in the atmosphere, and the oxynitride of the present invention represented by the composition formula is TiN 2 O′OlSiO.
- Titanium fluoride (sample A) was obtained.
- the hydrous titanium dioxide was calcined in the air at 850 ° C for 5 hours to obtain titanium dioxide that was not coated with silicon oxide.
- the obtained titanium dioxide was rutile type. Titanium dioxide not coated with this oxide was placed in a quartz tube having an inner diameter of 7.5 cm, and the quartz tube was heated at 980 ° C. for 3 hours while aeration of ammonia gas at a flow rate of 10 liters Z. Subsequently, the obtained product was cooled to 100 ° C under the same atmosphere, and further allowed to cool to room temperature in the air. At this stage, X-ray diffraction revealed a rutile-type titanium oxide peak in addition to the titanium oxynitride peak.
- the product was again charged into a 7.5 cm inner diameter quartz tube, and the quartz tube was heated at 980 ° C. for 3 hours while ammonia gas was vented at a flow rate of 10 liters Z, and then the resulting product was obtained.
- the product is cooled to 100 ° C in the same atmosphere, and further allowed to cool to room temperature in the air.
- the titanium oxynitride of the present invention (sample B) whose composition formula is represented by TiN O 'OSiO is obtained.
- Example 1 the titanium oxynitride of the present invention represented by the compositional formula TiN 2 O'OlSiO was tested in the same manner as in Example 1 except that the heat reduction time at 980 ° C. was 3 hours.
- Example 1 the titanium oxynitride of the present invention represented by the composition formula TiN 2 O'OlSiO was used in the same manner as in Example 1 except that the heat reduction conditions were 900 ° C. and 3 hours (sample D
- the quartz tube was placed in a 7.5 cm inner diameter quartz tube, and the quartz tube was heated at 900 ° C. for 3 hours while supplying ammonia gas at a flow rate of 10 liters Z. Next, the obtained product was cooled to 100 ° C. under the same atmosphere, and further allowed to cool to room temperature in the atmosphere, so that the composition formula was TiN 2 O—O.llSiO.
- Titanium oxynitride (sample E) represented by 0.88 0.64 2 was obtained.
- titanium black whose composition formula is represented by TiN O 'O.OOlSiO (Mitsubishi Materials
- the product 13M-C) was used as comparative sample F.
- Table 1 shows the compositions and characteristics of Samples A to F obtained in Examples and Comparative Examples. Since the titanium oxynitride of the present invention has a high nitrogen content and a small crystallite diameter, the wavelength at which the minimum value of the visible light reflectance is shifted to the lower wavelength side compared to the comparative example, and the visible light reflectance Can be seen to be high. It can also be seen that the titanium oxynitride of the present invention has the same pigment properties as the comparative example.
- Hydrous diacid titanium dioxide is suspended in 300 liters of TiO equivalent in 1 liter of water to form a slurry.
- the pH of the slurry was adjusted to 10 with an aqueous sodium chloride solution, and then the slurry temperature was heated to 70 ° C., and then an aqueous sodium silicate solution was added dropwise for 2 hours. Subsequently, after the slurry temperature was heated to 90 ° C., dilute sulfuric acid was added dropwise for 2 hours to neutralize the pH by 5 mm, and the mixture was further maintained for 30 minutes. Then dehydrated and washed, and then baked in air at 850 ° C for 5 hours. Titanium dioxide dioxide coated with 0.3 wt% as SiO was obtained. The obtained diacid titanium is
- titanium oxide-coated titanium dioxide was placed in a SUS310 pipe with an inner diameter of 25.5 cm, and the SUS310 pipe was 980 ° C while aeration of ammonia gas at a flow rate of 265 liters Z. For 3 hours.
- the obtained product is cooled to 100 ° C. in the same atmosphere, and further allowed to cool to room temperature in the atmosphere.
- Titanium oxynitride of the present invention having a nitrogen content of 20.0% by weight (sample G) Got.
- Titanium oxynitride obtained in Example 5 (Sample G) 27.5 g, water 64 ml, 0.5 mm ⁇ zircon beads 161.8 g were charged into a glass bottle and placed in a paint conditioner (Red Devil # 5110). Then, the zircon beads were removed to obtain a wet pulverized slurry. The concentration of the obtained wet pulverized slurry was adjusted to 250 gZ liters with pure water, pH was adjusted to 7.0 with sulfuric acid, and 0.55 g of ⁇ -glycidoxypropyltrimethoxysilane was added at room temperature for 80 minutes.
- Titanium oxynitride obtained in Example 5 (Sample G) 27.5 g, water 64 ml, 0.5 mm ⁇ zircon beads 161.8 g were charged into a glass bottle and placed in a paint conditioner (Red Devil # 5110). Then, the zircon beads were removed to obtain a wet pulverized slurry.
- Titanium oxynitride obtained in Example 5 (Sample G) 27.5 g, water 64 ml, 0.5 mm ⁇ zircon beads 161.8 g were charged in a glass bottle, and paint conditioner (manufactured by Red Devil) # 5110), the zircon beads were removed, and a wet pulverized slurry was obtained.
- the concentration of the obtained wet pulverized slurry was adjusted to 250 gZ liters with pure water, and a mixed solution of 0.55 g of isopropyl tris (dioctyl pyrophosphate) titanate and 0.27 g of triethylamine was added at room temperature, and 20 minutes holding, was adjusted to 4.5 pH with sulfuric acid, dehydrated, washed, dried, isopropyl tris (di-O Chi le pyrophosphate) titanate 2wt 0/0 at the surface treatment was titanium oxynitride (sample Obtained.
- Titanium oxynitride obtained in Example 5 (Sample G) 27.5 g, water 64 ml, 0.5 mm ⁇ zircon beads 161.8 g were charged into a glass bottle and placed in a paint conditioner (Red Devil # 5110). Then, the zircon beads were removed to obtain a wet pulverized slurry. The concentration of the obtained wet pulverized slurry was adjusted to 250 gZ liters with pure water, heated to 70 ° C, adjusted to ⁇ .5 with sodium hydroxide aqueous solution, and sodium aluminate aqueous solution was added dropwise over 20 minutes, Stir for 20 minutes.
- Table 2 shows the compositions and characteristics of Samples G to K obtained in Examples. It can be seen that the titanium oxynitride coated with the inorganic compound or organic compound of the present invention has a low conductivity.
- Example 5 Example 6 Example 7 Example 8 Example 9 Nitrogen content (heavy
- Tube voltage 40kV
- tube current 30mA
- Sample pretreatment Mix with hydrochloric acid and hydrofluoric acid, pressurize and seal in a special container, and heat the container.
- Reduction tube temperature 500 ° C
- Oxygen charging time during sample combustion 120 seconds
- Specimen 1 Place 5 g into a glass round cell (Nippon Denshoku, Part No. 1483), measure the color from the bottom of the cell with a color difference meter (Nippon Denshoku Color Meter ZE2000), and use the Lab color system. Ask.
- Oxidation of titanium oxynitride reduces the nitrogen content, so the sample that is left for one month at room temperature and does not substantially reduce the nitrogen content of titanium oxynitride is considered to have good oxidative stability. On the other hand, a sample in which the nitrogen content is greatly reduced is defined as “bad”.
- the titanium oxynitride of the present invention is used as a black pigment by blending it with rosin, paint, ink, cosmetics and the like.
- it is used as a black pigment blended in a black matrix of a color filter used in a plasma display panel or a color liquid crystal display device.
- an optical member that shields visible light other than these for example, glass, lenses, films, etc. It can also be blended and used.
- the titanium oxynitride of the present invention is used as a conductivity-imparting agent by blending it into a film, fiber, toner, magnetic recording medium or the like.
- FIG. 1 is a graph showing a visible light reflection spectrum of Sample A obtained in Example 1.
- FIG. 2 is a graph showing a visible light reflection spectrum of Sample B obtained in Example 2.
- FIG. 3 is a graph showing a visible light reflection spectrum of Sample C obtained in Example 3.
- FIG. 4 is a graph showing a visible light reflection spectrum of Sample D obtained in Example 4.
- FIG. 5 is a graph showing a visible light reflection spectrum of Sample E obtained in Comparative Example 1.
- FIG. 6 is a graph showing a visible light reflection spectrum of Sample F obtained in Comparative Example 2.
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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KR1020077017524A KR101240091B1 (ko) | 2004-12-28 | 2005-12-27 | 흑색 산질화 티타늄 |
CN2005800452012A CN101090866B (zh) | 2004-12-28 | 2005-12-27 | 黑色氮氧化钛 |
US11/794,269 US7491349B2 (en) | 2004-12-28 | 2005-12-27 | Black titanium oxynitride |
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JP2004381129 | 2004-12-28 | ||
JP2004-381129 | 2004-12-28 |
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WO2006070795A1 true WO2006070795A1 (ja) | 2006-07-06 |
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PCT/JP2005/023888 WO2006070795A1 (ja) | 2004-12-28 | 2005-12-27 | 黒色系酸窒化チタン |
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US (1) | US7491349B2 (ja) |
KR (1) | KR101240091B1 (ja) |
CN (1) | CN101090866B (ja) |
TW (1) | TW200631898A (ja) |
WO (1) | WO2006070795A1 (ja) |
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US7785501B2 (en) | 2004-12-28 | 2010-08-31 | Dai Nippon Printing Co., Ltd. | Black resin composition for display device, and member for display device |
CN104034072A (zh) * | 2013-03-08 | 2014-09-10 | 中国建筑材料科学研究总院 | 太阳光谱选择性吸收涂层及其制备方法以及应用 |
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CN104034072A (zh) * | 2013-03-08 | 2014-09-10 | 中国建筑材料科学研究总院 | 太阳光谱选择性吸收涂层及其制备方法以及应用 |
CN104034073A (zh) * | 2013-03-08 | 2014-09-10 | 中国建筑材料科学研究总院 | 咖啡色太阳能光谱选择性吸收涂层及其制备方法和应用 |
CN104034072B (zh) * | 2013-03-08 | 2016-04-27 | 中国建筑材料科学研究总院 | 太阳光谱选择性吸收涂层及其制备方法以及应用 |
CN104034073B (zh) * | 2013-03-08 | 2017-07-14 | 中国建筑材料科学研究总院 | 咖啡色太阳能光谱选择性吸收涂层及其制备方法和应用 |
Also Published As
Publication number | Publication date |
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US20080017835A1 (en) | 2008-01-24 |
US7491349B2 (en) | 2009-02-17 |
CN101090866A (zh) | 2007-12-19 |
KR20070103407A (ko) | 2007-10-23 |
TW200631898A (en) | 2006-09-16 |
KR101240091B1 (ko) | 2013-03-06 |
CN101090866B (zh) | 2011-08-17 |
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