WO2011158606A1 - 新規な黄色顔料組成物及び黄色顔料微粒子の製造方法 - Google Patents
新規な黄色顔料組成物及び黄色顔料微粒子の製造方法 Download PDFInfo
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- WO2011158606A1 WO2011158606A1 PCT/JP2011/061694 JP2011061694W WO2011158606A1 WO 2011158606 A1 WO2011158606 A1 WO 2011158606A1 JP 2011061694 W JP2011061694 W JP 2011061694W WO 2011158606 A1 WO2011158606 A1 WO 2011158606A1
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- WIPO (PCT)
- Prior art keywords
- fluid
- processing
- yellow pigment
- fine particles
- treated
- Prior art date
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- C—CHEMISTRY; METALLURGY
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- C07D—HETEROCYCLIC COMPOUNDS
- C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
- C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
- C07D403/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond
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- 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
- C09B67/006—Preparation of organic pigments
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C245/00—Compounds containing chains of at least two nitrogen atoms with at least one nitrogen-to-nitrogen multiple bond
- C07C245/02—Azo compounds, i.e. compounds having the free valencies of —N=N— groups attached to different atoms, e.g. diazohydroxides
- C07C245/06—Azo compounds, i.e. compounds having the free valencies of —N=N— groups attached to different atoms, e.g. diazohydroxides with nitrogen atoms of azo groups bound to carbon atoms of six-membered aromatic rings
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D235/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
- C07D235/02—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
- C07D235/04—Benzimidazoles; Hydrogenated benzimidazoles
- C07D235/06—Benzimidazoles; Hydrogenated benzimidazoles with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached in position 2
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- 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
- C09B67/0001—Post-treatment of organic pigments or dyes
- C09B67/0014—Influencing the physical properties by treatment with a liquid, e.g. solvents
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- 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
- C09B67/0001—Post-treatment of organic pigments or dyes
- C09B67/0017—Influencing the physical properties by treatment with an acid, H2SO4
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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
- C09B67/0025—Crystal modifications; Special X-ray patterns
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- C—CHEMISTRY; METALLURGY
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- 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
- C09B67/0033—Blends of pigments; Mixtured crystals; Solid solutions
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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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- C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/322—Pigment inks
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
- G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B2207/00—Coding scheme for general features or characteristics of optical elements and systems of subclass G02B, but not including elements and systems which would be classified in G02B6/00 and subgroups
- G02B2207/113—Fluorescence
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/70—Nanostructure
- Y10S977/773—Nanoparticle, i.e. structure having three dimensions of 100 nm or less
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/70—Nanostructure
- Y10S977/788—Of specified organic or carbon-based composition
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/70—Nanostructure
- Y10S977/832—Nanostructure having specified property, e.g. lattice-constant, thermal expansion coefficient
- Y10S977/834—Optical properties of nanomaterial, e.g. specified transparency, opacity, or index of refraction
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- 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.]
Definitions
- the present invention relates to a novel yellow pigment composition and a method for producing yellow pigment fine particles.
- coloring materials are roughly divided into dyes and pigments.
- dyes are superior to pigments in terms of color characteristics such as color developability, transparency, and coloring power.
- dyes are inferior in durability such as water resistance, heat resistance, light resistance and weather resistance compared to pigments, long-term stability is often not ensured.
- pigments are more durable than dyes, dyes are colored by molecules, whereas pigments are colored by solids (crystals), so light scattering cannot be ignored depending on the size of the particles.
- Spectral characteristics such as transmission, absorption and reflection change greatly.
- yellow pigments are often inferior in color characteristics such as coloring power as compared with other blue and red pigments.
- Patent Document 1 shows spectral characteristics such that the transmittance at 610 nm in an aqueous solution prepared so that the transmittance at 435 nm is 20.0% in the color filter ink is 95% or more. Is the required spectral characteristics of water-soluble yellow dyes. Further, in Patent Document 2, in a color filter for reflective liquid crystal display including yellow, magenta, and cyan color pixels using a dye as a coloring material, 420 to 470 nm when light passes through the yellow color pixels once.
- the minimum required transmittance in the wavelength range of 4 to 40% is set to 4 to 40%, and the maximum required transmittance value in the wavelength range of 500 to 700 nm is 80% or more is the required spectral characteristic of yellow.
- dyes such as those described in Patent Document 1 and Patent Document 2
- pigments In this case, it was difficult to satisfy the color characteristic requirement. Therefore, in many industrial fields such as paints, inkjet inks, color filters, and toners, a yellow pigment composition having a spectral characteristic equivalent to the yellow required spectral characteristic and a method for producing the same have been desired.
- Patent Document 4 a new method for producing pigment nanoparticles has been proposed by precipitating a pigment between processing surfaces that can be approached and separated by the applicant of the present application. The specific method for the color and its color characteristics were not disclosed.
- an object of the present invention is to provide a yellow pigment composition containing yellow pigment fine particles that have durability and have the same spectral characteristics as the yellow required spectral characteristics, and a method for producing the yellow pigment fine particles.
- the present invention relates to at least one kind of yellow pigment fine particles characterized in that, in a transmission spectrum at 350 to 800 nm, the difference (Tmax ⁇ Tmin) between the highest (Tmax) and lowest (Tmin) transmittance is 80% or more.
- a yellow pigment composition is provided.
- the present invention can be implemented as the yellow pigment fine particles are organic pigments.
- the present invention can be carried out as the yellow pigment fine particles are characterized by being an azo pigment or an isoindoline pigment.
- the fluid to be treated is supplied between the processing surfaces that can be approached / separated and relatively displaced, and the pressure applied between the supply pressure of the fluid to be treated and the rotating processing surface.
- the distance between the processing surfaces is maintained at a minute interval by the balance between the pressure in the approaching direction and the force in the separation direction, and the flow to be processed between the two processing surfaces maintained at the minute interval is maintained.
- the present invention can be implemented as the yellow pigment fine particles having a substantially spherical shape.
- the present invention can be implemented as the yellow pigment fine particles having a volume average particle diameter of 1 to 200 nm.
- the invention of the present application is a method for producing the above-mentioned yellow pigment fine particles, wherein a fluid to be treated is supplied between treatment surfaces that can be approached / separated and relatively displaced, and the supply of the fluid to be treated is provided.
- the distance between the processing surfaces is maintained at a very small distance by a balance between the pressure in the approaching direction including the pressure and the pressure applied between the rotating processing surfaces, and the force in the separating direction, and this distance is maintained.
- the fluid to be treated forms a thin film fluid, and the yellow pigment fine particles are precipitated in the thin film fluid.
- a method for producing yellow pigment fine particles is provided.
- the present invention also provides a fluid pressure application mechanism that applies pressure to the fluid to be processed, a first processing unit, and a second processing unit that can approach and separate from the first processing unit.
- a fluid pressure application mechanism that applies pressure to the fluid to be processed
- a first processing unit and a second processing unit that can approach and separate from the first processing unit.
- At least two processing parts, and a rotational drive mechanism that relatively rotates the first processing part and the second processing part, and at the positions facing each other in each of the processing parts,
- the at least two processing surfaces of the first processing surface and the second processing surface are provided, and the processing fluid to which the pressure is applied is flowed through each of the processing surfaces.
- a part of the forced flow path is configured, and at least the second processing part of the first processing part and the second processing part includes a pressure receiving surface, and the pressure receiving surface.
- the application mechanism receives a pressure applied to the fluid to be processed and generates a force for moving the second processing surface away from the first processing surface, and is capable of approaching / separating and relatively rotating first.
- the fluid to be treated, to which the pressure is applied, is passed between the processing surface and the second processing surface, so that the fluid to be treated forms the thin film fluid,
- the method can be carried out as a method for producing yellow pigment fine particles, wherein the yellow pigment fine particles are precipitated.
- another kind of fluid to be treated is passed between the first treatment surface and the second treatment surface, and is different from the above kind of fluid to be treated.
- An independent separate introduction path through which the body passes, and at least one opening leading to the introduction path is provided in at least one of the first processing surface and the second processing surface, and from the introduction path Introducing the other kind of fluid to be treated between the two processing surfaces, and mixing the kind of fluid to be treated and another kind of fluid to be treated in the thin film fluid. It can be implemented as a method for producing the characteristic yellow pigment fine particles.
- the opening is provided on the downstream side of the mixing of the fluid to be processed, the point where the flow of the kind of fluid to be processed becomes a laminar flow between the two processing surfaces,
- the method can be carried out as a method for producing yellow pigment fine particles characterized by introducing the other kind of fluid to be treated from the opening.
- the present invention relates to at least one kind of yellow pigment fine particles characterized in that, in a transmission spectrum at 350 to 800 nm, the difference (Tmax ⁇ Tmin) between the highest (Tmax) and lowest (Tmin) transmittance is 80% or more. It was possible to provide a yellow pigment composition containing and a method for producing the yellow pigment fine particles.
- the yellow pigment composition has spectral characteristics equivalent to the yellow required spectral characteristics described in Patent Document 1 and Patent Document 2, and has improved the conventional problems listed above.
- FIG. 1 is a schematic cross-sectional view of a fluid processing apparatus according to an embodiment of the present invention.
- A is a schematic plan view of a first processing surface of the fluid processing apparatus shown in FIG. 1, and
- B) is an enlarged view of a main part of the processing surface of the apparatus.
- A) is sectional drawing of the 2nd introducing
- B) is the principal part enlarged view of the processing surface for demonstrating the 2nd introducing
- FIG. 2 is a TEM photograph of PY-185 fine particles produced in Example 1 of the present invention.
- FIG. 2 is a graph showing a powder X-ray diffraction spectrum
- (A) is PY-185 fine particles prepared in Example 1
- (B) is PY-185 fine particles prepared in Example 2
- (C) is a starting material.
- It is a powder X-ray diffraction spectrum of PY-185 used.
- 2 is a fluorescence spectrum curve of an excitation wavelength of 400 nm of PY-185 fine particle powder produced in Example 1.
- FIG. It is a fluorescence spectrum curve of the excitation wavelength of 400 nm of PY-185 powder used as a starting material.
- FIG. 2 is a fluorescence spectrum curve of an excitation wavelength of 400 nm of the PY-185 fine particle dispersion (pigment concentration: 0.003 wt%) prepared in Example 1.
- FIG. It is a transmission spectrum of the PY-155 fine particle dispersion (PY-155 concentration: 0.004 wt%) prepared in Example 7 (solid line) and Example 8 (one-dot chain line) of the present invention. It is an absorption spectrum (PY-155 concentration: 0.0014 wt%) of the PY-155 fine particle dispersion prepared in Example 7 of the present invention. It is a transmission spectrum of the PY-180 fine particle dispersion (PY-180 concentration 0.004 wt%) prepared in Example 10 (solid line) and Example 11 (broken line) of the present invention.
- the yellow pigment fine particles constituting the yellow pigment composition used in the present invention are not particularly limited.
- the yellow pigment fine particles include disazo yellow pigments, monoazo yellow pigments, azo lake yellow pigments, and condensed azo yellow pigments.
- Organic pigments such as azo pigments such as isoindolinone yellow pigments, isoindoline yellow pigments, condensed polycyclic yellow pigments, quinacridone yellow pigments, and other inorganic pigments such as strontium yellow and zinc yellow Etc.
- the present invention is a yellow pigment composition containing at least one kind of yellow pigment fine particles having any of the transmission spectrum characteristics shown in FIG. 4, FIG. 10 or FIG. Further, the yellow pigment composition in the present invention contains a yellow pigment derivative such as a sulfonated product or hydroxide of yellow pigment fine particles. It can also be carried out by including a yellow pigment composition in which a functional group such as a hydroxyl group or a sulfo group is introduced on the surface of the yellow pigment fine particles. In addition, the crystal form of the yellow pigment composition according to the present invention is not particularly limited.
- the difference (Tmax ⁇ Tmin) between the highest (Tmax) and lowest (Tmin) transmittance is 80% or more.
- this is a yellow pigment composition containing at least one kind of yellow pigment fine particles. More desirably, it contains at least one kind of yellow pigment fine particles having a difference (Tmax ⁇ Tmin) between 80% and less than 100% in the transmission spectrum at 350 to 800 nm in which the difference between the highest (Tmax) and the lowest (Tmin) is 80% or less.
- the method for measuring the transmission spectrum in the present invention is not particularly limited. For example, a method of measuring a transmission spectrum of an aqueous solution of an yellow pigment composition or an organic solvent-based dispersion, or a method of measuring a dispersion applied to glass, a transparent electrode, a film, or the like.
- the method for producing the yellow pigment composition obtained in the present invention is not particularly limited.
- the break-down method represented by the pulverization method can be used, and the build-up method can also be used. It can also be carried out by newly synthesizing.
- a yellow pigment is prepared by mixing a fluid containing a yellow pigment solution in which a yellow pigment is dissolved in a solvent and a fluid containing a solvent that is a poor solvent for the yellow pigment.
- a method for producing yellow pigment fine particles by precipitation In the thin film fluid formed between the processing surfaces in which at least one of the fluids is disposed so as to be able to approach and separate from each other and at least one rotates with respect to the other in a method for producing yellow pigment fine particles by precipitation.
- a method for producing yellow pigment fine particles characterized in that the yellow pigment fine particles are precipitated in the thin film fluid This manufacturing method will be described below. However, this manufacturing method is only an example, and the present invention is not limited to this manufacturing method.
- the yellow pigment as a starting material to be dissolved in a solvent as the yellow pigment solution is not particularly limited, and the same yellow pigment as the yellow pigment fine particles constituting the yellow pigment composition described above can be used.
- the yellow pigments listed above can be carried out even if they are each independent, or can be carried out even if plural kinds form a solid solution.
- the crystal form of the yellow pigment before being dissolved in the solvent is not limited, and various crystal types of yellow pigments can be used.
- a yellow pigment containing a yellow pigment before the pigmentation step or an amorphous yellow pigment can also be used.
- the particle diameter is not particularly limited.
- the fluid processing apparatus shown in FIGS. 1 to 3 is the same as the apparatus described in Patent Document 4, and between the processing surfaces in the processing unit in which at least one of which can be approached and separated rotates relative to the other.
- a first fluid that is a first fluid to be treated among the fluids to be treated is introduced between the processing surfaces, and a flow path into which the first fluid is introduced.
- the second fluid which is the second fluid to be treated among the fluids to be treated, is introduced between the processing surfaces from another flow path having an opening communicating between the processing surfaces. It is an apparatus that performs processing by mixing and stirring the first fluid and the second fluid between the surfaces.
- U indicates the upper side
- S indicates the lower side.
- the upper, lower, front, rear, left and right only indicate a relative positional relationship, and do not specify an absolute position.
- R indicates the direction of rotation.
- C indicates the centrifugal force direction (radial direction).
- This apparatus uses at least two kinds of fluids as a fluid to be treated, and at least one kind of fluid includes at least one kind of an object to be treated and is opposed to each other so as to be able to approach and separate.
- a processing surface at least one of which rotates with respect to the other, and the above-mentioned fluids are merged between these processing surfaces to form a thin film fluid.
- An apparatus for processing an object to be processed As described above, this apparatus can process a plurality of fluids to be processed, but can also process a single fluid to be processed.
- This fluid processing apparatus includes first and second processing units 10 and 20 that face each other, and at least one of the processing units rotates.
- the opposing surfaces of both processing parts 10 and 20 are processing surfaces.
- the first processing unit 10 includes a first processing surface 1
- the second processing unit 20 includes a second processing surface 2.
- Both the processing surfaces 1 and 2 are connected to the flow path of the fluid to be processed and constitute a part of the flow path of the fluid to be processed.
- the distance between the processing surfaces 1 and 2 can be changed as appropriate, but is usually adjusted to 1 mm or less, for example, a minute distance of about 0.1 ⁇ m to 50 ⁇ m.
- the fluid to be processed that passes between the processing surfaces 1 and 2 becomes a forced thin film fluid forced by the processing surfaces 1 and 2.
- the apparatus When processing a plurality of fluids to be processed using this apparatus, the apparatus is connected to the flow path of the first fluid to be processed and forms a part of the flow path of the first fluid to be processed. At the same time, a part of the flow path of the second fluid to be treated is formed separately from the first fluid to be treated. And this apparatus performs processing of fluid, such as making both flow paths merge and mixing both the to-be-processed fluids between the processing surfaces 1 and 2, and making it react.
- “treatment” is not limited to a form in which the object to be treated reacts, but also includes a form in which only mixing and dispersion are performed without any reaction.
- the first holder 11 that holds the first processing portion 10 the second holder 21 that holds the second processing portion 20, a contact pressure applying mechanism, a rotation drive mechanism, A first introduction part d1, a second introduction part d2, and a fluid pressure imparting mechanism p are provided.
- the first processing portion 10 is an annular body, more specifically, a ring-shaped disk.
- the second processing unit 20 is also a ring-shaped disk.
- the materials of the first and second processing parts 10 and 20 are metal, carbon, ceramic, sintered metal, wear-resistant steel, sapphire, other metals subjected to hardening treatment, hard materials lining, Those with coating, plating, etc. can be used.
- at least a part of the first and second processing surfaces 1 and 2 facing each other is mirror-polished in the processing units 10 and 20.
- the surface roughness of this mirror polishing is not particularly limited, but is preferably Ra 0.01 to 1.0 ⁇ m, more preferably Ra 0.03 to 0.3 ⁇ m.
- At least one of the holders can be rotated relative to the other holder by a rotational drive mechanism (not shown) such as an electric motor.
- Reference numeral 50 in FIG. 1 denotes a rotation shaft of the rotation drive mechanism.
- the first holder 11 attached to the rotation shaft 50 rotates and is used for the first processing supported by the first holder 11.
- the unit 10 rotates with respect to the second processing unit 20.
- the second processing unit 20 may be rotated, or both may be rotated.
- the first and second holders 11 and 21 are fixed, and the first and second processing parts 10 and 20 are rotated with respect to the first and second holders 11 and 21. May be.
- At least one of the first processing unit 10 and the second processing unit 20 can be approached / separated from at least either one, and both processing surfaces 1 and 2 can be approached / separated. .
- the second processing unit 20 approaches and separates from the first processing unit 10, and the second processing unit 20 is disposed in the storage unit 41 provided in the second holder 21. It is housed in a hauntable manner.
- the first processing unit 10 may approach or separate from the second processing unit 20, and both the processing units 10 and 20 may approach or separate from each other. It may be a thing.
- the accommodating portion 41 is a recess that mainly accommodates a portion of the second processing portion 20 on the side opposite to the processing surface 2 side, and is a groove that has a circular shape, that is, is formed in an annular shape in plan view. .
- the accommodating portion 41 accommodates the second processing portion 20 with a sufficient clearance that allows the second processing portion 20 to rotate.
- the second processing unit 20 may be arranged so that only the parallel movement is possible in the axial direction, but by increasing the clearance, the second processing unit 20 is
- the center line of the processing part 20 may be tilted and displaced so as to break the relationship parallel to the axial direction of the storage part 41. Furthermore, the center line of the second processing part 20 and the storage part 41 may be displaced.
- the center line may be displaced so as to deviate in the radial direction. As described above, it is desirable to hold the second processing unit 20 by the floating mechanism that holds the three-dimensionally displaceably.
- the above-described fluid to be treated is subjected to both treatment surfaces from the first introduction part d1 and the second introduction part d2 in a state where pressure is applied by a fluid pressure application mechanism p configured by various pumps, potential energy, and the like. It is introduced between 1 and 2.
- the first introduction part d1 is a passage provided in the center of the annular second holder 21, and one end of the first introduction part d1 is formed on both processing surfaces from the inside of the annular processing parts 10, 20. It is introduced between 1 and 2.
- the second introduction part d2 supplies the second processing fluid to be reacted with the first processing fluid to the processing surfaces 1 and 2.
- the second introduction part d ⁇ b> 2 is a passage provided inside the second processing part 20, and one end thereof opens at the second processing surface 2.
- the first fluid to be processed that has been pressurized by the fluid pressure imparting mechanism p is introduced from the first introduction part d1 into the space inside the processing parts 10 and 20, and the first processing surface 1 and the second processing surface 2 are supplied. It passes between the processing surfaces 2 and tries to pass outside the processing portions 10 and 20. Between these processing surfaces 1 and 2, the second fluid to be treated pressurized by the fluid pressure applying mechanism p is supplied from the second introduction part d 2, merged with the first fluid to be treated, and mixed.
- the above-mentioned contact surface pressure applying mechanism applies a force that acts in a direction in which the first processing surface 1 and the second processing surface 2 approach each other to the processing portion.
- the contact pressure applying mechanism is provided in the second holder 21 and biases the second processing portion 20 toward the first processing portion 10.
- the contact surface pressure applying mechanism is a force that pushes the first processing surface 1 of the first processing portion 10 and the second processing surface 2 of the second processing portion 20 in the approaching direction (hereinafter referred to as a contact surface).
- This is a mechanism for generating pressure.
- a thin film fluid having a minute film thickness of nm to ⁇ m is generated by the balance between the contact pressure and the force for separating the processing surfaces 1 and 2 such as fluid pressure. In other words, the distance between the processing surfaces 1 and 2 is kept at a predetermined minute distance by the balance of the forces.
- the contact surface pressure applying mechanism is arranged between the accommodating portion 41 and the second processing portion 20.
- a spring 43 that biases the second processing portion 20 in a direction approaching the first processing portion 10 and a biasing fluid introduction portion 44 that introduces a biasing fluid such as air or oil.
- the contact surface pressure is applied by the spring 43 and the fluid pressure of the biasing fluid. Any one of the spring 43 and the fluid pressure of the urging fluid may be applied, and other force such as magnetic force or gravity may be used.
- the second processing unit 20 causes the first treatment by the separation force generated by the pressure or viscosity of the fluid to be treated which is pressurized by the fluid pressure imparting mechanism p against the bias of the contact surface pressure imparting mechanism.
- the first processing surface 1 and the second processing surface 2 are set with an accuracy of ⁇ m by the balance between the contact surface pressure and the separation force, and a minute amount between the processing surfaces 1 and 2 is set. An interval is set.
- the separation force includes the fluid pressure and viscosity of the fluid to be processed, the centrifugal force due to the rotation of the processing part, the negative pressure when the urging fluid introduction part 44 is negatively applied, and the spring 43 is pulled.
- the force of the spring when it is used as a spring can be mentioned.
- This contact surface pressure imparting mechanism may be provided not in the second processing unit 20 but in the first processing unit 10 or in both.
- the second processing unit 20 has the second processing surface 2 and the inside of the second processing surface 2 (that is, the first processing surface 1 and the second processing surface 2).
- a separation adjusting surface 23 is provided adjacent to the second processing surface 2 and located on the entrance side of the fluid to be processed between the processing surface 2 and the processing surface 2.
- the separation adjusting surface 23 is implemented as an inclined surface, but may be a horizontal surface.
- the pressure of the fluid to be processed acts on the separation adjusting surface 23 to generate a force in a direction in which the second processing unit 20 is separated from the first processing unit 10. Accordingly, the pressure receiving surfaces for generating the separation force are the second processing surface 2 and the separation adjusting surface 23.
- the proximity adjustment surface 24 is formed on the second processing portion 20.
- the proximity adjustment surface 24 is a surface opposite to the separation adjustment surface 23 in the axial direction (upper surface in FIG. 1), and the pressure of the fluid to be processed acts on the second processing portion 20. A force is generated in a direction that causes the first processing unit 10 to approach the first processing unit 10.
- the pressure of the fluid to be processed that acts on the second processing surface 2 and the separation adjusting surface 23, that is, the fluid pressure, is understood as a force constituting an opening force in the mechanical seal.
- the projected area A1 of the proximity adjustment surface 24 projected on a virtual plane orthogonal to the approaching / separating direction of the processing surfaces 1 and 2, that is, the protruding and protruding direction (axial direction in FIG. 1) of the second processing unit 20 The area ratio A1 / A2 of the total area A2 of the projected areas of the second processing surface 2 and the separation adjusting surface 23 of the second processing unit 20 projected onto the virtual plane is called a balance ratio K. This is important for the adjustment of the opening force.
- the opening force can be adjusted by the pressure of the fluid to be processed, that is, the fluid pressure, by changing the balance line, that is, the area A1 of the adjustment surface 24 for proximity.
- P1 represents the pressure of the fluid to be treated, that is, the fluid pressure
- K represents the balance ratio
- k represents the opening force coefficient
- Ps represents the spring and back pressure
- the proximity adjustment surface 24 may be implemented with a larger area than the separation adjustment surface 23.
- the fluid to be processed becomes a thin film fluid forced by the two processing surfaces 1 and 2 holding the minute gaps, and tends to move to the outside of the annular processing surfaces 1 and 2.
- the mixed fluid to be processed does not move linearly from the inside to the outside of the two processing surfaces 1 and 2, but instead has an annular radius.
- a combined vector of the movement vector in the direction and the movement vector in the circumferential direction acts on the fluid to be processed and moves in a substantially spiral shape from the inside to the outside.
- the rotating shaft 50 is not limited to what was arrange
- At least one of the first and second processing parts 10 and 20 may be cooled or heated to adjust the temperature.
- the first and second processing parts 10 and 10 are adjusted.
- 20 are provided with temperature control mechanisms (temperature control mechanisms) J1, J2.
- the temperature of the introduced fluid to be treated may be adjusted by cooling or heating. These temperatures can also be used for the deposition of the treated material, and also to generate Benard convection or Marangoni convection in the fluid to be treated between the first and second processing surfaces 1 and 2. May be set.
- a groove-like recess 13 extending from the center side of the first processing portion 10 to the outside, that is, in the radial direction is formed on the first processing surface 1 of the first processing portion 10. May be implemented.
- the planar shape of the recess 13 is curved or spirally extending on the first processing surface 1, or is not shown, but extends straight outward, L It may be bent or curved into a letter shape or the like, continuous, intermittent, or branched.
- the recess 13 can be implemented as one formed on the second processing surface 2, and can also be implemented as one formed on both the first and second processing surfaces 1, 2.
- the base end of the recess 13 reaches the inner periphery of the first processing unit 10.
- the tip of the recess 13 extends toward the outer peripheral surface of the first processing surface 1, and the depth (cross-sectional area) gradually decreases from the base end toward the tip.
- a flat surface 16 without the recess 13 is provided between the tip of the recess 13 and the outer peripheral surface of the first processing surface 1.
- the opening d20 of the second introduction part d2 is provided in the second processing surface 2, it is preferably provided at a position facing the flat surface 16 of the facing first processing surface 1.
- the opening d20 is desirably provided on the downstream side (outside in this example) from the concave portion 13 of the first processing surface 1.
- it is installed at a position facing the flat surface 16 on the outer diameter side from the point where the flow direction when introduced by the micropump effect is converted into a laminar flow direction in a spiral shape formed between the processing surfaces. It is desirable to do.
- the distance n in the radial direction from the outermost position of the recess 13 provided in the first processing surface 1 is preferably about 0.5 mm or more.
- nano-sized fine particles nano fine particles
- the second introduction part d2 can have directionality.
- the introduction direction from the opening d20 of the second processing surface 2 is inclined with respect to the second processing surface 2 at a predetermined elevation angle ( ⁇ 1).
- the elevation angle ( ⁇ 1) is set to be more than 0 degrees and less than 90 degrees, and in the case of a reaction with a higher reaction rate, it is preferably set at 1 to 45 degrees.
- the introduction direction from the opening d ⁇ b> 20 of the second processing surface 2 has directionality in the plane along the second processing surface 2.
- the introduction direction of the second fluid is a component in the radial direction of the processing surface that is an outward direction away from the center and a component with respect to the rotation direction of the fluid between the rotating processing surfaces. Is forward.
- a line segment in the radial direction passing through the opening d20 and extending outward is defined as a reference line g and has a predetermined angle ( ⁇ 2) from the reference line g to the rotation direction R. This angle ( ⁇ 2) is also preferably set to more than 0 degree and less than 90 degrees.
- This angle ( ⁇ 2) can be changed and implemented in accordance with various conditions such as the type of fluid, reaction speed, viscosity, and rotational speed of the processing surface.
- the second introduction part d2 may not have any directionality.
- the number of fluids to be treated and the number of flow paths are two, but may be one, or may be three or more.
- the second fluid is introduced between the processing surfaces 1 and 2 from the second introduction part d2, but this introduction part may be provided in the first processing part 10 or may be provided in both. Good.
- the shape, size, and number of the opening for introduction provided in each processing portion are not particularly limited, and can be appropriately changed. Further, an introduction opening may be provided immediately before or between the first and second processing surfaces 1 and 2 and further upstream.
- reactions such as precipitation / precipitation or crystallization are arranged so as to be able to approach and separate from each other, and at least one of the processing surfaces 1 rotates with respect to the other. Occurs with forcible uniform mixing between the two.
- the particle size and monodispersity of the yellow pigment fine particles are adjusted as appropriate by adjusting the rotational speed and flow rate of the processing units 10 and 20, the distance between the processing surfaces, the raw material concentration of the processed fluid, the solvent type of the processed fluid, and the like. By doing so, it can be controlled.
- first introduction part d1 which is one flow path
- fluids containing a solvent that is a poor solvent for the yellow pigment as the first fluid are arranged to face each other so as to be able to approach and separate, and at least one of them is disposed.
- a thin film fluid composed of the first fluid is made between the processing surfaces.
- a fluid containing a yellow pigment solution in which a yellow pigment as a reactant is dissolved is directly introduced as a second fluid into the thin film fluid composed of the first fluid from the second introduction part d2 which is another flow path.
- the first fluid and the second fluid are thin films between the processing surfaces 1 and 2 whose distance is fixed by the pressure balance between the fluid supply pressure and the pressure applied between the rotating processing surfaces. While maintaining the state, it is possible to carry out a reaction that is instantaneously mixed to produce yellow pigment fine particles.
- the second fluid is introduced from the first introduction part d 1 and the first fluid is introduced from the second introduction part d 2. May be introduced.
- the expressions “first” and “second” in each fluid have only an implication for identification that they are the nth of a plurality of fluids, and a third or higher fluid may exist.
- the third introduction part d3 can be provided in the processing apparatus, and the first fluid, the second fluid, and the third fluid are respectively supplied from each introduction part. It can be introduced separately into the processing apparatus. If it does so, the density
- fine-particles can be controlled more precisely.
- the combination of fluids to be processed (first fluid to third fluid) to be introduced into each introduction portion can be arbitrarily set. The same applies to the case where the fourth or more introduction portions are provided, and the fluid to be introduced into the processing apparatus can be subdivided in this way.
- the temperature of the fluid to be treated such as the first and second fluids is controlled, or the temperature difference between the first fluid and the second fluid (ie, the temperature difference between the fluids to be treated to be supplied) is determined. It can also be controlled.
- the temperature of each processed fluid to be supplied the temperature of each processed fluid (processing device, more specifically, the temperature immediately before being introduced between the processing surfaces 1 and 2) is measured. It is also possible to add a mechanism for heating or cooling each fluid to be processed introduced between the processing surfaces 1 and 2.
- the combination of the first fluid and the second fluid is not particularly limited, but can be carried out as long as the fluid includes a yellow pigment solution obtained by dissolving a yellow pigment in a solvent and a fluid including a solvent that is a poor solvent for the yellow pigment.
- the solvent that is a poor solvent for the yellow pigment is a solvent that can be a poor solvent and has a lower solubility in the yellow pigment than the solvent in which the yellow pigment is dissolved.
- the solvent for dissolving the yellow pigment is not particularly limited.
- sulfuric acid, hydrochloric acid, nitric acid, trifluoroacetic acid, phosphoric acid, citric acid and the like can be used.
- amide solvents such as hexamethylphosphoric triamide, dimethyl sulfoxide, pyridine, or a mixture thereof can be used.
- a solution obtained by dissolving a yellow pigment in a solution obtained by adding an alkali or acid substance to a general organic solvent containing the amide solvent, dimethyl sulfoxide, or pyridine can be used as a yellow pigment solution.
- Examples of the alkali added to the organic solvent include sodium hydroxide, potassium hydroxide, sodium methoxide, sodium ethoxide and the like.
- Examples of the acid include sulfuric acid, hydrochloric acid, nitric acid, trifluoroacetic acid, phosphoric acid, and citric acid as described above.
- a solvent that is a poor solvent for the yellow pigment for precipitating the yellow pigment fine particles a solvent having a lower solubility in the yellow pigment than the solvent in which the yellow pigment is dissolved can be used.
- water, alcohol compound solvent, amide compound solvent, ketone compound solvent, ether compound solvent, aromatic compound solvent, carbon disulfide, aliphatic compound solvent, nitrile compound solvent, sulfoxide compound solvent, halogen compound solvent, ester compound solvent examples include a pyridine compound solvent, an ionic liquid solvent, a carboxylic acid compound solvent, a sulfonic acid compound solvent, and a sulfolane compound solvent. These solvents may be used alone or can be carried out using a mixture of two or more of these.
- an alkali or an acid to the solvent used as a poor solvent with respect to the yellow pigment mentioned above.
- the alkali added to the solvent to be the poor solvent include sodium hydroxide, potassium hydroxide, sodium methoxide, sodium ethoxide and the like.
- the acid include sulfuric acid, hydrochloric acid, nitric acid, trifluoroacetic acid, phosphoric acid, Citric acid etc. can be mentioned.
- a fluid containing a yellow pigment solution or a fluid containing a solvent that is a poor solvent for the yellow pigment, or both of them may contain a dispersant such as a block copolymer, a polymer, or a surfactant.
- said dispersing agent may be contained in the 3rd fluid different from the fluid containing the solvent which becomes a poor solvent with respect to the yellow pigment solution and the yellow pigment solution.
- surfactant and dispersant various commercially available products used for pigment dispersion can be used. Although not particularly limited, for example, sodium dodecyl sulfate or dodecylbenzenesulfonic acid type such as Neogen RK (Daiichi Kogyo Seiyaku), Solsperse 20000, Solsperse 24000, Solsperse 26000, Solsperse 27000, Solsperse 28000, Solsperse 41090 ( Dispersic BYK-160, Dispersic BYK-161, Dispersic BYK-162, Dispersic BYK-163, Dispersic BYK-166, Dispersic BYK-170, Dispersic BYK-180, Disper Big BYK-181, Dispersic BYK-182, Dispersic BYK-183, Dispersic BYK-184 Dispersic BYK-190, Dispersic BYK-191, Dispersic BYK-192, Dispersic BYK-2000, Dispersic B
- the surface treatment by introducing a modifying group on at least the surface of the yellow pigment fine particles can be carried out by including a surface modifier in the fluid introduced between the treatment surfaces 1 and 2.
- the surface modifier may be contained in either the fluid containing the yellow pigment solution (first fluid), the fluid containing the solvent that becomes a poor solvent for the yellow pigment (second fluid), or both.
- the fluid containing the yellow pigment solution may be contained in a third fluid different from the fluid containing a solvent that is a poor solvent for the yellow pigment.
- the combination of the first fluid and the second fluid is not particularly limited to the above.
- the type of the modifying group introduced at least on the pigment surface as the surface modifying group is not particular limitation.
- a solvent for dispersion or a dispersion What is necessary is just to use properly according to a kind.
- polar groups such as acidic groups and basic groups, salt structures of the polar groups, highly polar atoms such as oxygen and sulfur, and / or structures with large polarizability introduced with aromatic rings, hydrogen bonding groups, hetero groups
- polar groups such as acidic groups and basic groups, salt structures of the polar groups, highly polar atoms such as oxygen and sulfur, and / or structures with large polarizability introduced with aromatic rings, hydrogen bonding groups, hetero groups
- polar groups such as acidic groups and basic groups, salt structures of the polar groups, highly polar atoms such as oxygen and sulfur, and / or structures with large polarizability introduced with aromatic rings, hydrogen bonding groups, hetero groups
- polar groups such as acidic groups and basic groups, salt structures of the polar groups, highly polar
- Examples of the acidic group include a hydroxyl group (hydroxy group), a sulfonic acid group (sulfo group), a carboxylic acid group, a phosphoric acid group, and a boric acid group.
- An amino group etc. are mentioned as a basic group.
- Examples of the hydrogen bonding group include a urethane moiety, a thiourethane moiety, a urea moiety, and a thiourea moiety.
- the purpose of the surface treatment is other than the improvement of dispersibility
- the surface of the yellow pigment fine particles is made water repellent, oleophilic, or oleophilic solvent
- the first fluid or the second fluid, or its By including a surface modifying agent containing a lipophilic functional group in both, the lipophilic functional group can be introduced as a modifying group on the surface of the yellow pigment fine particles discharged from between the processing surfaces 1 and 2 to perform lipophilic treatment.
- the surface modifier may be contained in a third fluid that is different from the first fluid and the second fluid.
- the material containing the resin is contained in the first fluid or the second fluid, or both, so that the surface between the treatment surfaces 1 and 2 At least a part of the surface of the discharged yellow pigment fine particles is covered with a resin, and for example, hydrophilic treatment can be performed.
- the resin may contain a third fluid different from the first fluid and the second fluid.
- the surface treatment is not limited to the case where the surface modification of the yellow pigment fine particles is performed between the processing surfaces 1 and 2 as described above, and is performed even after the yellow pigment fine particles are discharged from between the processing surfaces 1 and 2. it can.
- the substance used for the surface treatment of the above-mentioned yellow pigment fine particles is added to the discharged liquid after the fluid containing the yellow pigment fine particles is discharged between the processing surfaces 1 and 2 and stirred.
- the surface treatment of the yellow pigment fine particles can be performed by this operation.
- impurities can be removed from the fluid containing the yellow pigment fine particles with a dialysis tube or the like, and then a substance for surface treatment can be added.
- the surface treatment can be performed after the liquid component of the fluid containing the yellow pigment fine particles discharged from between the processing surfaces 1 and 2 is dried to obtain a yellow pigment fine particle powder. Specifically, it can be carried out by dispersing the obtained yellow pigment fine particle powder in a target solvent, adding the above-mentioned substance for the surface treatment and performing a treatment such as stirring.
- the method for producing yellow pigment fine particles in the present invention can freely change the Reynolds number of the microchannel, so that the particle diameter, particle shape, crystal type, etc.
- monodispersed yellow pigment fine particles having good redispersibility can be prepared.
- due to its self-discharging properties there is no clogging of the product even in the case of a reaction involving precipitation, and a large pressure is not required. Therefore, the yellow pigment fine particles can be stably produced, and the safety is excellent, the impurities are hardly mixed, and the cleaning property is good. Furthermore, since it is possible to scale up according to the target production volume, it is possible to provide a method for producing yellow pigment fine particles with high productivity.
- the yellow pigment composition according to the present invention can be used for various applications such as paints, inkjet inks, thermal transfer inks, toners, colored resins, and color filters.
- FIG. 1 An apparatus for uniformly stirring and mixing in a thin film fluid, which is formed between processing surfaces 1 and 2, which are disposed so as to be able to approach and separate from each other and at least one rotates with respect to the other, shown in FIG. 1.
- a PY-185 solution (yellow pigment solution) obtained by dissolving an isoindoline yellow pigment (CI Pigment Yellow 185 (hereinafter referred to as PY-185) in a solvent) is used.
- PY-185 is mixed with a solvent that is a poor solvent, and is uniformly mixed in a thin film fluid to precipitate PY-185 fine particles, which are arranged to face each other so as to be accessible and disengaged as shown in FIG.
- PY-155 solution yellow pigment solution
- PY-155 nt Yellow 155
- PY-155 nt Yellow 155
- PY-180 a disazo yellow pigment
- a solvent that is a poor solvent for PY-180 for precipitating PY-180 fine particles in the thin film fluid.
- PY-180 particles a disazo yellow pigment
- “from the center” means “from the first introduction part d1” of the processing apparatus shown in FIG. 1 described above, and the first fluid is the first processed object described above.
- the fluid refers to the fluid
- the second fluid refers to the above-mentioned second fluid to be treated introduced from the second introduction part d2 of the processing apparatus shown in FIG.
- “%” here means “% by weight”.
- the particle size distribution was measured using a nanotrack particle size distribution measuring device UPA-UT151 (manufactured by Nikkiso Co., Ltd.), and the volume average particle size was adopted.
- the transmission spectrum and the absorption spectrum were measured in a wavelength region of 350 nm to 800 nm using an ultraviolet-visible spectrophotometer (UV-2450) manufactured by Shimadzu Corporation.
- UV-2450 ultraviolet-visible spectrophotometer
- Fluorescence spectrum The fluorescence spectrum was measured three-dimensionally using a spectrofluorometer (FP-6500) manufactured by JASCO Corporation.
- FP-6500 a spectrofluorometer manufactured by JASCO Corporation.
- An FDA-430 type high sensitivity cell holder was used for powder measurement, and a 10 mm square cell was used for measurement of the dispersion.
- Examples 1 to 6 While feeding pure water, citric acid aqueous solution or methanol as the first fluid from the center at a supply pressure of 0.30 MPaG and a rotation speed of 300 to 3600 rpm, PY-185 as concentrated sulfuric acid (98%), Alternatively, a PY-185 solution (yellow pigment solution) dissolved in a mixed solvent of potassium hydroxide, ethanol and dimethyl sulfoxide was introduced between the processing surfaces 1 and 2. A PY-185 fine particle dispersion was discharged from between the processing surfaces 1 and 2. The discharged PY-185 fine particles were loosely aggregated, collected using a filter cloth and an aspirator, and washed with pure water.
- PY-185 fine particle paste was vacuum-dried at 30 ° C. and ⁇ 0.1 MPaG. XRD measurement of PY-185 fine particle powder after drying was performed. Further, a paste of PY-185 fine particles before drying was dispersed in a dispersion medium in which Neogen RK (Daiichi Kogyo Seiyaku Co., Ltd., active ingredient sodium dodecylbenzenesulfonate) was added as a surfactant to pure water. The dispersion of the dispersed PY-185 fine particles was subjected to particle size distribution measurement using pure water as a solvent.
- Neogen RK Densiichi Kogyo Seiyaku Co., Ltd., active ingredient sodium dodecylbenzenesulfonate
- a part of the aqueous dispersion of PY-185 fine particles was diluted with pure water, and the transmission spectrum of the dispersion having a PY-185 concentration of 0.003 wt% was measured.
- the transmission spectra of the PY-185 fine particle dispersions prepared in Examples 1 to 3 are shown in FIG.
- Example 1 to 6 as shown in Table 1, the types of the first fluid and the second fluid, the rotation speed, the liquid feeding temperature (temperature immediately before each fluid is introduced into the processing apparatus), and the introduction speed (flow rate) ) (Unit: ml / min.) was changed.
- the volume average particle diameter based on the particle size distribution measurement results in the PY-185 fine particle dispersions prepared in Examples 1 to 6 and the difference between the maximum (Tmax) and the minimum (Tmin) of the transmittance in the transmission spectrum at 350 to 800 nm (Tmax) -Tmin) is shown in Table 1.
- a TEM photograph of the PY-185 fine particles produced in Example 1 is shown in FIG. It can be seen that the obtained PY-185 fine particles have a substantially spherical shape.
- FIG. 6A shows the powder X-ray diffraction spectrum of the PY-185 fine particles prepared in Example 1
- FIG. 6B shows the powder X-ray diffraction of the PY-185 fine particles prepared in Example 2.
- FIG. 6C shows a powder X-ray diffraction spectrum of PY-185 as a starting material used for the second fluid.
- Table 1 and FIGS. 4 to 6 in the present invention, in the transmission spectrum at 350 to 800 nm, the difference (Tmax ⁇ Tmin) between the highest (Tmax) and the lowest (Tmin) of the transmittance is 80% or more.
- a pigment composition containing at least one kind of PY-185 fine particles and a method for producing the PY-185 fine particles are provided.
- a pigment composition comprising at least one PY-185 fine particle having spectral characteristics equivalent to the required yellow spectral characteristics described in Patent Document 1 and Patent Document 2 and a method for producing the PY-185 fine particles are provided. I was able to do it. Further, since the PY-185 fine particles constituting the PY-185 pigment composition have a volume average particle diameter of 1 to 200 nm and the particle diameter is controlled, it is possible to produce PY-185 fine particles. The development of color characteristics such as color tone and coloring power can be expected.
- the present invention is not limited, the measurement results of the fluorescence spectrum are shown in FIGS.
- the PY-185 fine particle powder obtained in Example 1 and the PY-185 powder used as the starting material for the second fluid are both in the excitation wavelength region of 220 to 640 nm and in the wavelength region of about 500 to 700 nm. Fluorescence was observed at.
- the fluorescence spectrum curve of the PY-185 fine particle powder obtained in Example 1 at an excitation wavelength of 400 nm FIG.
- the peak position of the fluorescence spectrum of the PY-185 fine particle powder obtained in Example 1 is 560 nm, whereas the fluorescence spectrum of the PY-185 powder used as the starting material in the second fluid
- the PY-185 fine particle powder obtained in Example 1 has a peak position of 535 nm, which is significantly longer than the fluorescence spectrum peak of the PY-185 powder used as the starting material for the second fluid. It turns out that it has shifted to the wavelength side (red shift).
- FIG. 9 shows a fluorescence spectrum curve of the PY-185 fine particle dispersion obtained in Example 1 at an excitation wavelength of 400 nm.
- PY-185 concentration 0.003 wt%
- the PY-185 dispersion liquid (PY-185 concentration 0.003 wt%) used as the starting material for the second fluid was adjusted with the PY-185 fine particle dispersion liquid (PY-185 prepared in Examples 1 to 6).
- PY-185 powder was dispersed in a dispersion medium in which Neogen RK (made by Daiichi Kogyo Seiyaku Co., Ltd., active ingredient sodium dodecylbenzenesulfonate) was added to pure water as a surfactant. It was adjusted.
- Neogen RK made by Daiichi Kogyo Seiyaku Co., Ltd., active ingredient sodium dodecylbenzenesulfonate
- PY-155 is concentrated sulfuric acid (98%) or hydroxylated as the second fluid while feeding methanol or a mixed solvent of acetic acid and methanol as the first fluid from the center at a supply pressure of 0.30 MPaG and a rotation speed of 1700 rpm.
- a PY-155 solution (yellow pigment solution) dissolved in a mixed solvent of potassium, ethanol and dimethyl sulfoxide was introduced between the processing surfaces 1 and 2.
- a PY-155 fine particle dispersion was discharged from between the processing surfaces 1 and 2. The discharged PY-155 fine particles were loosely aggregated and settled by centrifugation ( ⁇ 26000 G).
- the supernatant liquid after the centrifugation treatment was removed, pure water was added to disperse the PY-155 fine particles, and then the centrifugation was repeated again to wash the PY-155 fine particles.
- the PY-155 fine particle paste finally obtained was vacuum-dried at 30 ° C. and ⁇ 0.1 MPaG. XRD measurement was performed on the dried PY-155 fine particle powder. Further, a paste of PY-155 fine particles before drying was dispersed in a dispersion medium obtained by adding sodium dodecyl sulfate (SDS: manufactured by Kanto Chemical) as a surfactant to pure water. The dispersion of the dispersed PY-155 fine particles was subjected to particle size distribution measurement using pure water as a solvent.
- SDS sodium dodecyl sulfate
- FIG. 11 shows an absorption spectrum (pigment concentration: 0.0014 wt%) of the PY-155 fine particle dispersion prepared in Example 7.
- Example 7 to 9 as shown in Table 2, the types of the first fluid and the second fluid, the liquid feeding temperature (temperature immediately before each fluid is introduced into the processing apparatus), and the introduction speed (flow rate) (unit) : Ml / min.).
- the difference (Tmax ⁇ Tmin) between the highest (Tmax) and the lowest (Tmin) of the transmittance is 80% or more.
- a pigment composition containing at least one kind of 155 fine particles and a method for producing the PY-155 fine particles were provided. That is, a pigment composition comprising at least one kind of PY-155 fine particles having spectral characteristics equivalent to the yellow required spectral characteristics described in Patent Document 1 and Patent Document 2, and a method for producing the PY-155 fine particles are provided. I was able to do it.
- the PY-155 fine particles constituting the PY-155 pigment composition have a volume average particle diameter of 1 to 200 nm, and PY-155 fine particles having a controlled particle diameter can be produced, The development of color characteristics such as color tone and coloring power can be expected.
- Example 10 to 12 While sending citric acid aqueous solution or methanol as the first fluid from the center at a supply pressure of 0.30 MPaG and a rotation speed of 1700 rpm, PY-180 is concentrated sulfuric acid (98%) or potassium hydroxide as the second fluid.
- a PY-180 solution (yellow pigment solution) dissolved in a mixed solvent of ethanol and dimethyl sulfoxide was introduced between the processing surfaces 1 and 2.
- a PY-180 fine particle dispersion was discharged from between the processing surfaces 1 and 2. The discharged PY-180 fine particles were loosely aggregated and collected using a filter cloth and an aspirator, and the PY-180 fine particles were washed with pure water.
- the finally obtained paste of PY-180 fine particles was dispersed in a dispersion medium in which Neogen RK (manufactured by Daiichi Kogyo Seiyaku Co., Ltd., active ingredient sodium dodecylbenzenesulfonate) as a surfactant was added to pure water.
- the dispersion of the dispersed PY-180 fine particles was subjected to particle size distribution measurement using pure water as a solvent.
- a part of the aqueous dispersion of PY-180 fine particles was diluted with pure water, and the transmission spectrum of the dispersion having a PY-180 concentration of 0.004 wt% was measured.
- the transmission spectra of the PY-180 fine particle dispersions produced in Examples 10 to 11 are shown in FIG.
- Example 10 to 12 as shown in Table 3, the types of the first fluid and the second fluid, the liquid feeding temperature (temperature immediately before each fluid is introduced into the processing apparatus), and the introduction speed (flow rate) (unit) : Ml / min.).
- the difference (Tmax ⁇ Tmin) between the highest (Tmax) and the lowest (Tmin) of the transmittance is 80% or more.
- a pigment composition containing at least one kind of 180 fine particles and a method for producing the PY-180 fine particles is provided. That is, a pigment composition comprising at least one PY-180 fine particle having spectral characteristics equivalent to the yellow required spectral characteristics described in Patent Document 1 and Patent Document 2 and a method for producing the PY-180 fine particles are provided. I was able to do it.
- the PY-180 pigment fine particles constituting the PY-180 pigment composition have a volume average particle size of 1 to 200 nm, and PY-180 fine particles with a controlled particle size can be produced. Expression of color characteristics such as color tone and coloring power can be expected.
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Abstract
Description
この鏡面研磨の面粗度は、特に限定されないが、好ましくはRa0.01~1.0μm、より好ましくはRa0.03~0.3μmとする。
このように、3次元的に変位可能に保持するフローティング機構によって、第2処理用部20を保持することが望ましい。
P=P1×(K-k)+Ps
なお、図示は省略するが、近接用調整面24を離反用調整面23よりも広い面積を持ったものとして実施することも可能である。
この凹部13の先端と第1処理用面1の外周面との間には、凹部13のない平坦面16が設けられている。
粒度分布は、ナノトラック粒度分布測定装置UPA-UT151(日機装株式会社製)を用いて測定し、体積平均粒子径を採用した。
X線回折測定にはPANalytical社製の全自動多目的X線回折装置(X‘Pert PRO MPD)を用いた。回折角2θ=5~50°の範囲での回折強度を測定した。
透過スペクトル並びに吸収スペクトルは島津製作所製の紫外可視分光光度計(UV-2450)を用いて350nm~800nmの波長領域を測定した。
蛍光スペクトルは、日本分光株式会社製の分光蛍光光度計(FP-6500)を用いて3次元測定を行った。粉末の測定には、FDA-430型高感度セルホルダを用い、分散液の測定には10mm角セルを用いた。
中央から第1流体として純水、クエン酸水溶液またはメタノールを、供給圧力=0.30MPaG、回転数300~3600rpmで送液しながら、第2流体として、PY-185を濃硫酸(98%)、または水酸化カリウムとエタノール及びジメチルスルホキシドの混合溶媒に溶解したPY-185溶液(黄色顔料溶液)を処理用面1、2間に導入した。PY-185微粒子分散液が処理用面1,2間より吐出された。吐出されたPY-185微粒子を緩く凝集させ、ろ布及びアスピレーターを用いてろ集し、純水にて微粒子の洗浄を行った。最終的に得られたPY-185微粒子のペーストを30℃、-0.1MPaGにて真空乾燥した。乾燥後のPY-185微粒子粉末のXRD測定を行った。さらに純水に界面活性剤としてネオゲンR-K(第一工業製薬製、有効成分ドデシルベンゼンスルホン酸ナトリウム)を加えた分散媒体に乾燥前のPY-185微粒子のペーストを分散処理した。分散処理したPY-185微粒子の分散液について、溶媒に純水を用いて粒度分布測定を行った。また、PY-185微粒子の水系分散液の一部を純水を用いて希釈し、PY-185濃度0.003wt%の分散液の透過スペクトルを測定した。実施例1~3において作製されたPY-185微粒子分散液の透過スペクトルを図4に示す。
中央から第1流体としてメタノールまたは酢酸とメタノールの混合溶媒を、供給圧力=0.30MPaG、回転数1700rpmで送液しながら、第2流体として、PY-155を濃硫酸(98%)または水酸化カリウムとエタノール及びジメチルスルホキシドの混合溶媒に溶解したPY-155溶液(黄色顔料溶液)を処理用面1、2間に導入した。PY-155微粒子分散液が処理用面1,2間より吐出された。吐出されたPY-155微粒子を緩く凝集させ、遠心分離(×26000G)にて沈降させた。遠心分離処理後の上澄み液を除去し、純水を加えてPY-155微粒子を分散させた後、再度遠心分離を繰り返して、PY-155微粒子の洗浄を行った。最終的に得られたPY-155微粒子のペーストを30℃、-0.1MPaGにて真空乾燥した。乾燥後のPY-155微粒子粉末のXRD測定を行った。さらに純水に界面活性剤としてドデシル硫酸ナトリウム(SDS:関東化学製)を加えた分散媒体に乾燥前のPY-155微粒子のペーストを分散処理した。分散処理したPY-155微粒子の分散液について、溶媒に純水を用いて粒度分布測定を行った。また、PY-155微粒子の水系分散液の一部を純水を用いて希釈し、PY-155濃度0.004wt%の分散液の透過スペクトルを測定した。実施例7,8において作製されたPY-155微粒子分散液の透過スペクトルを図10に示す。また、本発明を特に限定するものではないが、図11に実施例7において作製されたPY-155微粒子分散液の吸収スペクトル(顔料濃度:0.0014wt%)を示す。
中央から第1流体としてクエン酸水溶液またはメタノールを、供給圧力=0.30MPaG、回転数1700rpmで送液しながら、第2流体として、PY-180を濃硫酸(98%)、または水酸化カリウムとエタノール及びジメチルスルホキシドの混合溶媒に溶解したPY-180溶液(黄色顔料溶液)を処理用面1、2間に導入した。PY-180微粒子分散液が処理用面1,2間より吐出された。吐出されたPY-180微粒子を緩く凝集させ、ろ布及びアスピレーターを用いてろ集し、純水にてPY-180微粒子の洗浄を行った。最終的に得られたPY-180微粒子のペーストを、純水に界面活性剤としてネオゲンR-K(第一工業製薬製、有効成分ドデシルベンゼンスルホン酸ナトリウム)を加えた分散媒体に分散処理した。分散処理したPY-180微粒子の分散液について、溶媒に純水を用いて粒度分布測定を行った。また、PY-180微粒子の水系分散液の一部を純水を用いて希釈し、PY-180濃度0.004wt%の分散液の透過スペクトルを測定した。実施例10~11において作製されたPY-180微粒子分散液の透過スペクトルを図12に示す。
2 第2処理用面
10 第1処理用部
11 第1ホルダ
20 第2処理用部
21 第2ホルダ
23 離反用調整面
d1 第1導入部
d2 第2導入部
d20 開口部
p 流体圧付与機構
Claims (10)
- 350~800nmにおける透過スペクトルにおいて、透過率の最高(Tmax)と最低(Tmin)の差(Tmax-Tmin)が80%以上であることを特徴とする黄色顔料微粒子を、少なくとも1種類含有してなる黄色顔料組成物。
- 上記黄色顔料微粒子が、有機顔料であることを特徴とする、請求項1に記載の黄色顔料組成物。
- 上記黄色顔料微粒子が、アゾ系顔料またはイソインドリン系顔料である事を特徴とする、請求項1に記載の黄色顔料組成物。
- 接近・離反可能、且つ相対的に変位する処理用面の間に被処理流動体を供給し、
当該被処理流動体の供給圧と回転する処理用面の間にかかる圧力とを含む接近方向への力と離反方向への力との圧のバランスによって処理用面間の距離を微小間隔に維持し、
この微小間隔に維持された2つの処理用面間を被処理流動体の流路とすることによって、被処理流動体が薄膜流体を形成し、
この薄膜流体中において微粒子として、上記黄色顔料微粒子が生成されたものであることを特徴とする、請求項1に記載の黄色顔料組成物。 - 上記黄色顔料微粒子の形状が略球状であることを特徴とする、請求項1に記載の黄色顔料組成物。
- 上記黄色顔料微粒子の体積平均粒子径が1~200nmであることを特徴とする、請求項5に記載の黄色顔料組成物。
- 請求項1に記載の黄色顔料微粒子を生成させる方法であって、
接近・離反可能、且つ相対的に変位する処理用面の間に被処理流動体を供給し、
当該被処理流動体の供給圧と回転する処理用面の間にかかる圧力とを含む接近方向への力と離反方向への力との圧のバランスによって処理用面間の距離を微小間隔に維持し、
この微小間隔に維持された2つの処理用面間を被処理流動体の流路とすることによって、被処理流動体が薄膜流体を形成し、
この薄膜流体中において上記黄色顔料微粒子の析出を行うことを特徴とする黄色顔料微粒子の製造方法。 - 上記の被処理流動体に圧力を付与する流体圧付与機構と、
第1処理用部、及び、この第1処理用部に対して接近・離反可能な第2処理用部の、少なくとも2つの処理用部と、
上記の第1処理用部と第2処理用部とを相対的に回転させる回転駆動機構とを備え、
上記の各処理用部において互いに対向する位置に、第1処理用面、及び第2処理用面の、上記少なくとも2つの処理用面が設けられており、
上記の各処理用面は、上記の圧力が付与された被処理流動体が流される、強制状態の流路の一部を構成するものであり、
上記第1処理用部と第2処理用部のうち、少なくとも第2処理用部は受圧面を備えるものであり、且つ、この受圧面の少なくとも一部が上記の第2処理用面により構成され、
この受圧面は、上記の流体圧付与機構が被処理流動体に付与する圧力を受けて第1処理用面から第2処理用面を離反させる方向に移動させる力を発生させ、
接近・離反可能、且つ相対的に回転する第1処理用面と第2処理用面との間に上記の圧力が付与された被処理流動体が通されることにより、上記被処理流動体が上記薄膜流体を形成し、
この薄膜流体中において上記黄色顔料微粒子の析出を行うことを特徴とする、請求項7に記載の黄色顔料微粒子の製造方法。 - 一種の被処理流動体が上記第1処理用面と第2処理用面との間に通され、
上記の一種の被処理流動体とは異なる他の一種の被処理流動体が通される独立した別途の導入路を備え、この導入路に通じる少なくとも一つの開口部が上記第1処理用面と第2処理用面の少なくとも何れか一方に設けられ、
この導入路から上記の他の一種の被処理流動体を、上記両処理用面間に導入し、
上記一種の被処理流動体と他の一種の被処理流動体とを、上記薄膜流体中で混合することを特徴とする、請求項8に記載の黄色顔料微粒子の製造方法。 - 上記被処理流動体の混合が、上記の一種の被処理流動体の流れが上記両処理用面間で層流となる点よりも下流側に上記開口部を設置し、上記開口部から上記の他の一種の被処理流動体を導入してなされることを特徴とする、請求項9に記載の黄色顔料微粒子の製造方法。
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JP2019104822A (ja) * | 2017-12-12 | 2019-06-27 | 東洋インキScホールディングス株式会社 | イソインドリン顔料、該顔料を含む印刷用インキ、カラーフィルタ用着色組成物及びカラーフィルタ |
JP2020026503A (ja) * | 2018-08-16 | 2020-02-20 | 東洋インキScホールディングス株式会社 | イソインドリン顔料、カラーフィルタ用着色組成物、カラーフィルタおよび印刷用インキ |
JP2021504560A (ja) * | 2017-11-27 | 2021-02-15 | センシエント・カラーズ・ユーケー・リミテッド | 染料を含むナノ粒子分散液 |
JP7050207B1 (ja) | 2021-04-22 | 2022-04-07 | 東洋インキScホールディングス株式会社 | 有機el表示装置 |
JP7201135B1 (ja) * | 2021-04-13 | 2023-01-10 | Dic株式会社 | 水性顔料分散体及びインクジェットインク |
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CN106029216B (zh) * | 2014-02-18 | 2018-05-08 | M技术株式会社 | 微粒的制造方法 |
CN111982763B (zh) * | 2020-08-17 | 2021-05-14 | 上海普康药业有限公司 | 一种辅酶 q10 的粒度及粒度分布测定方法 |
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