WO2017183577A1 - 黒色アゾ顔料及び着色剤 - Google Patents
黒色アゾ顔料及び着色剤 Download PDFInfo
- Publication number
- WO2017183577A1 WO2017183577A1 PCT/JP2017/015301 JP2017015301W WO2017183577A1 WO 2017183577 A1 WO2017183577 A1 WO 2017183577A1 JP 2017015301 W JP2017015301 W JP 2017015301W WO 2017183577 A1 WO2017183577 A1 WO 2017183577A1
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- WO
- WIPO (PCT)
- Prior art keywords
- black
- azo pigment
- black azo
- pigment
- colorant
- Prior art date
Links
- 239000000049 pigment Substances 0.000 title claims abstract description 104
- 239000003086 colorant Substances 0.000 title claims abstract description 29
- 125000003118 aryl group Chemical group 0.000 claims abstract description 7
- 239000011159 matrix material Substances 0.000 claims abstract description 7
- 125000001424 substituent group Chemical group 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 13
- 239000003973 paint Substances 0.000 claims description 10
- 229920000877 Melamine resin Polymers 0.000 claims description 4
- 229920000180 alkyd Polymers 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 4
- 230000005855 radiation Effects 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 27
- 150000001875 compounds Chemical class 0.000 description 22
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000004040 coloring Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 7
- 239000002612 dispersion medium Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 150000001989 diazonium salts Chemical class 0.000 description 6
- 239000006229 carbon black Substances 0.000 description 5
- 239000007962 solid dispersion Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- HDHQZCHIXUUSMK-UHFFFAOYSA-N 4-hydroxy-2-quinolone Chemical compound C1=CC=C2C(O)=CC(=O)NC2=C1 HDHQZCHIXUUSMK-UHFFFAOYSA-N 0.000 description 4
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 239000000976 ink Substances 0.000 description 4
- 239000002609 medium Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000000862 absorption spectrum Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000012954 diazonium Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 2
- RZVCEPSDYHAHLX-UHFFFAOYSA-N 3-iminoisoindol-1-amine Chemical compound C1=CC=C2C(N)=NC(=N)C2=C1 RZVCEPSDYHAHLX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- 0 *NC(c1cc(ccc2c3[n]c4c2cccc4)c3c(N=Nc(cc2)ccc2N=C([C@@]2C3=CC=CC2)NC3=C(C(c(cccc2)c2N2)=O)C2=O)c1O)=O Chemical compound *NC(c1cc(ccc2c3[n]c4c2cccc4)c3c(N=Nc(cc2)ccc2N=C([C@@]2C3=CC=CC2)NC3=C(C(c(cccc2)c2N2)=O)C2=O)c1O)=O 0.000 description 1
- PLAZTCDQAHEYBI-UHFFFAOYSA-N 2-nitrotoluene Chemical compound CC1=CC=CC=C1[N+]([O-])=O PLAZTCDQAHEYBI-UHFFFAOYSA-N 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical group NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- VQISLXLKFNQUCG-BUHFOSPRSA-N N=C(c1ccccc11)N/C1=C(\C(c1ccccc1N1)=O)/C1=O Chemical compound N=C(c1ccccc11)N/C1=C(\C(c1ccccc1N1)=O)/C1=O VQISLXLKFNQUCG-BUHFOSPRSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 241000872198 Serjania polyphylla Species 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000000304 alkynyl group Chemical group 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003849 aromatic solvent Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 235000019864 coconut oil Nutrition 0.000 description 1
- 239000003240 coconut oil Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006193 diazotization reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002296 dynamic light scattering Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000001056 green pigment Substances 0.000 description 1
- 125000001072 heteroaryl group Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000001034 iron oxide pigment Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000007974 melamines Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- -1 paratoluenesulfonic acid monohydrate Chemical class 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Images
Classifications
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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
- C09B56/00—Azo dyes containing other chromophoric systems
- C09B56/02—Azomethine-azo dyes
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/41—Organic pigments; Organic dyes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
-
- 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
- C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
- C09B67/0092—Dyes in solid form
Definitions
- the present invention relates to a near-infrared non-absorbing black azo pigment and a colorant using the same.
- carbon black pigments and iron oxide pigments are commonly used as black pigments used in paints, printing inks, and plastic colorants. These black pigments exhibit black color by absorbing all light rays including visible light region of sunlight.
- Black pigments (especially carbon black pigments) absorb light in the visible light region (approximately 380 to 780 nm) and show a black color, but actually have a wavelength of 800 to 1,400 nm that contributes greatly to heat. Light in the near infrared region including the region is also absorbed. For this reason, the article
- Patent Document 1 discloses that by using a colorant containing this black azo pigment, an article that is not excessively heated even by direct sunlight or the like can be obtained.
- Patent Document 2 an azo pigment obtained by using a compound represented by the following formula (A) as a diazo component has been proposed (Patent Document 2).
- Patent Document 1 has insufficient solvent resistance, it is inappropriate for applications requiring solvent resistance. Furthermore, the blackness was insufficient and there was room for improvement.
- Patent Document 2 does not disclose black pigments, and only yellow, orange, red-orange, red, dark red, brown, black brown, purple black, and dark green pigments are specifically shown. .
- the present invention has been made in view of such problems of the prior art, and the subject is a novel skeleton having sufficient blackness and excellent durability such as solvent resistance.
- the object is to provide a near-infrared non-absorbing black azo pigment having Moreover, the place made into the subject of this invention is providing the coloring agent using said black azo pigment.
- a black azo pigment represented by the following general formula (1).
- R 1 represents an aryl group which may have a substituent
- R 1 is represented by the following formula (2-X), (2-Y), or (2-Z).
- the following pigment colorants are provided.
- [5] A colorant containing the black azo pigment according to any one of [1] to [4].
- [6] The colorant according to [5], which is used to form a black matrix or a light shielding film for a color filter.
- the present invention it is possible to provide a near-infrared non-absorbing black azo pigment having a novel skeleton having sufficient blackness and excellent durability such as solvent resistance. Moreover, according to this invention, the coloring agent using this black azo pigment can be provided.
- R 1 represents an aryl group which may have a substituent
- examples of the aryl group represented by R 1 include a phenyl group, a heteroaryl group, and a naphthyl group. Of these, a phenyl group is preferred.
- substituent that can be bonded to the aryl group include alkyl groups, alkenyl groups, alkynyl groups, alkoxy groups, amino groups, and carbamate groups having 1 to 4 carbon atoms.
- R 1 in the general formula (1) is preferably a group represented by the following formula (2-X), (2-Y), or (2-Z).
- An important feature of the black azo pigment of the present invention is that it is a pigment synthesized using a compound represented by the following formula (A) as a diazo component (a component capable of forming a diazonium compound).
- the property of the compound represented by the following formula (A) is greatly different from the diazo component (B) represented by the following formula (B) described in Patent Document 1.
- the black azo pigment of the present invention that can be produced using the diazo component represented by the formula (A) is compared with the black azo pigment produced using the diazo component represented by the formula (B). Therefore, durability such as solvent resistance is improved.
- the diazo component represented by the formula (A) has a quinoline site in the structure, and is considered to be due to increased intermolecular forces such as hydrogen bonding and ⁇ - ⁇ interaction.
- the black azo pigment of the present invention has improved blackness because the absorption wavelength region is expanded.
- Conventional black azo pigments have weak absorption in the wavelength range of 650 to 700 nm and lack blackness.
- the diazo component represented by the formula (A) since the diazo component represented by the formula (A) has a quinoline site in its structure, resonance is expanded. Therefore, the black azo pigment of the present invention that can be produced using the diazo component represented by the formula (A) is considered to cover the absorption wavelength up to the long wavelength region of visible light.
- the black azo pigment has a diffusion coefficient equivalent diameter (volume average particle diameter, distribution standard: light intensity) measured by a dynamic light scattering method of 20 to 1,000 nm. If it is this range, it can be used as a black pigment without any problems in various applications. Obtaining a black pigment having a volume average particle diameter of less than 20 nm may be physically difficult. On the other hand, if the volume average particle diameter is more than 1,000 nm, the coloring power may be insufficient when used as a colorant. In order to further increase the blackness and the near infrared non-absorbing property, the volume average particle diameter of the black azo pigment is preferably 20 to 300 nm. In order to further increase the blackness (OD value: 2.2 or more), the volume average particle diameter of the black azo pigment is more preferably 20 to 100 nm.
- the black azo pigment of the present invention has extremely high blackness while being near-infrared non-absorbing.
- the black azo pigment of the present invention preferably has an optical density (OD value) of 2.2 or more, more preferably 2.5 or more, in an alkyd / melamine baking paint.
- the black azo pigment of the present invention comprises, for example, a coupling reaction between a diazonium compound (diazonium salt) obtained by diazotizing a compound represented by the following formula (A) and a compound represented by the following general formula (C). Can be manufactured.
- R 1 represents an aryl group which may have a substituent
- R 1 in the general formula (C) is a R 1 in the general formula (1) is as defined, including preferred.
- the compound in which R 1 in the general formula (C) is represented by the formula (2-X) is a compound known as the color index (CI) coupling component 13.
- the compound in which R 1 in the general formula (C) is represented by the formula (2-Y) is C.I. I. It is a compound known as the coupling component 25. All of these compounds are easily available and are advantageous in terms of cost.
- the compound represented by the formula (A) can be produced, for example, as follows. First, as shown in the following reaction formula, diiminoisoindoline and 2,4-dihydroxyquinoline are reacted in boiling methanol to obtain an intermediate (D) represented by the following formula (D). .
- the diazotization reaction of the compound represented by the formula (A) and the coupling reaction between the obtained diazonium compound and the compound represented by the general formula (C) are preferably carried out in water and an organic solvent.
- the organic solvent include alcohols such as methanol and ethanol; aromatic solvents such as toluene, xylene, o-dichlorobenzene, nitrobenzene, and o-nitrotoluene; N, N-dimethylformamide, N, N-dimethylacetamide, N -Polar solvents such as methylpyrrolidone. These organic solvents can be used alone or in combination of two or more.
- the colorant (coloring composition) of the present invention contains the above-described black azo pigment. If the colorant of the present invention is used, an article or the like can be colored black with extremely high blackness. Further, although depending on the concentration, the blackness can be increased as compared with the case of using carbon black.
- the colorant of the present invention may contain other pigment components other than the black azo pigment. Examples of other pigment components include chromatic color pigments, white pigments, other black pigments, and extender pigments. Moreover, you may use together 2 or more types of other pigment components according to the target color.
- the colorant of the present invention is useful as a material for forming, for example, a black matrix for a color filter or a light shielding film.
- the colorant of the present invention can be prepared, for example, by containing a black azo pigment in a liquid dispersion medium or a solid dispersion medium. That is, the colorant of the present invention may be a liquid coloring composition in which a pigment component containing a black azo pigment is contained in (i) a liquid dispersion medium, depending on the purpose, application, usage method, and the like. (Ii) It is good also as a solid coloring composition contained in the solid dispersion medium.
- the liquid coloring composition is mainly used as a colorant that is applied to the surface of an article, impregnates the article, or draws and prints on the article surface. That is, the liquid coloring composition can be used in various applications such as paint, plastic colorant, fiber colorant, printing ink, stationery, image recording colorant, or image display colorant.
- liquid dispersion medium a liquid dispersion medium or a liquid dispersion medium containing a solvent or water can be used.
- the liquid dispersion medium is selected from the group consisting of a polymer that may have a reactive group, an oligomer that may have a reactive group, and a monomer that may have a reactive group. At least one kind of film forming material may be contained.
- a high-concentration pigment processed product in which a pigment component containing a black azo pigment is finely dispersed in a dispersion medium is prepared in advance, it is preferable because colorants for various uses can be easily produced. .
- Such a high-concentration pigment processed product (high-concentration pigment dispersion) is generally used as a “base color” or “base ink”.
- the solid coloring composition is mainly used as a coloring agent for coloring plastic products and synthetic fibers.
- a master powder or a master batch which is a high-concentration pigment processed product (high-concentration pigment dispersion) in which a pigment component containing a black azo pigment is finely dispersed in a solid dispersion medium at a high concentration, or the whole is colored. It is used in known product shapes such as colored pellets.
- the solid dispersion medium thermoplastic resins, thermosetting resins, waxes, fatty acid amides, fatty acid metal soaps, and the like can be used. These solid dispersion media can be used singly or in combination of two or more.
- the volume average particle diameter of the black azo pigment (E) measured using a particle size measuring instrument was about 90 nm.
- Example 2 Production of black azo pigment (G) The above-mentioned implementation was performed except that 4 parts of the compound represented by the following formula (H) were used instead of 4 parts of the compound represented by the formula (F). In the same manner as in Example 1, 7 parts of a black azo pigment (G) represented by the following formula (G) was obtained. The resulting black azo pigment (G) had a volume average particle size of about 80 nm.
- Example 3 Production of black azo pigment (I) The above-described implementation was performed except that 4 parts of the compound represented by the following formula (J) were used instead of 4 parts of the compound represented by the formula (F). In the same manner as in Example 1, 6 parts of a black azo pigment (I) represented by the following formula (I) was obtained. The resulting black azo pigment (I) had a volume average particle size of about 90 nm.
- Blackness The reflectance of the coating film formed on the colored paper was measured, and the optical density (OD value) was calculated. Then, the blackness was evaluated according to the following criteria. The evaluation results are shown in Table 1. ⁇ : Very high blackness (OD value: 2.5 or more) ⁇ : High blackness (OD value: 2.2 or more and less than 2.5) X: Low blackness (OD value: less than 2.2)
- the black azo pigment of the present invention is useful as a material for producing products and the like that require high blackness such as a black matrix for CF. Further, since it is a near-infrared non-absorbing pigment, it is also useful as a non-heat-absorbing black pigment for which carbon black or the like is inappropriate.
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- Optics & Photonics (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- Inks, Pencil-Leads, Or Crayons (AREA)
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Abstract
Description
[1]下記一般式(1)で表される黒色アゾ顔料。
[4]体積平均粒子径が20~1,000nmの粉末又は粒子である前記[1]~[3]のいずれかに記載の黒色アゾ顔料。
[5]前記[1]~[4]のいずれかに記載の黒色アゾ顔料を含有する着色剤。
[6]カラーフィルター用のブラックマトリックス又は遮光フィルムを形成するために用いられる前記[5]に記載の着色剤。
以下、本発明の実施の形態について説明するが、本発明は以下の実施の形態に限定されるものではない。本発明の黒色アゾ顔料は、下記一般式(1)で表される構造を有する。以下、その詳細について説明する。
本発明の黒色アゾ顔料は、例えば、下記式(A)で表される化合物をジアゾ化して得られるジアゾニウム化合物(ジアゾニウム塩)と、下記一般式(C)で表される化合物とをカップリング反応させることによって製造することができる。
本発明の着色剤(着色組成物)は、上述の黒色アゾ顔料を含有する。本発明の着色剤を用いれば、物品等を極めて黒色度の高い黒色に着色することができる。また、濃度にもよるが、カーボンブラックを用いた場合よりも黒色度を高めることができる。本発明の着色剤には、黒色アゾ顔料以外のその他の顔料成分を含有させてもよい。その他の顔料成分としては、例えば、有彩色顔料、白色顔料、その他の黒色顔料、及び体質顔料などを挙げることができる。また、目的とする色彩にあわせて2種以上のその他の顔料成分を併用してもよい。本発明の着色剤は、例えば、カラーフィルター用のブラックマトリックス又は遮光フィルムを形成するための材料として有用である。
(合成例1)中間体(D)の製造
メタノール75部に、1,3-ジイミノイソインドリン22部及び2,4-ジヒドロキシキノリン12部を加え、55~60℃で3時間加熱した。熱時ろ過した後、メタノール及び水で洗浄した。80℃で乾燥し、下記式(D)で表される中間体(D)14部を得た。
メタノール300部に、中間体(D)10部、パラトルエンスルホン酸一水和物7部、及びパラフェニレンジアミン4部を加え、55~60℃で5時間加熱した。熱時ろ過した後、メタノール及び水で洗浄した。80℃で乾燥し、下記式(A)で表されるジアゾ成分(A)11部を得た。
(実施例1)黒色アゾ顔料(E)の製造
式(A)で表される化合物(ジアゾ成分(A))4部をジメチルアセトアミド60部に溶解した。常法により濃塩酸を加えて塩酸塩とした後、過剰量の亜硝酸ナトリウム水溶液を加えてジアゾ化し、ジアゾニウム塩溶液を調製した。一方、水酸化ナトリウム0.6部及びメタノール400部に、下記式(F)で表される化合物4部を溶解させたカップリング成分の溶液を用意した。15℃以下に保ったジアゾニウム塩溶液にカップリング成分の溶液を徐々に添加した。酢酸ナトリウムを添加してpHを6.5~7.0に調整して1時間撹拌した後、25℃で2時間撹拌した。次いで、40℃に昇温して3時間撹拌し、カップリング反応を完結させて顔料を生成させた。生成した顔料をろ過した後、メタノールで洗浄した。さらに、水洗及び乾燥して、下記式(E)で表される黒色アゾ顔料(E)6部を得た。粒度測定機器(商品名「NICOMP 380ZLS-S」、インターナショナル・ビジネス社製)を使用して測定した黒色アゾ顔料(E)の体積平均粒子径は、約90nmであった。
式(F)で表される化合物4部に代えて、下記式(H)で表される化合物4部を使用したこと以外は、前述の実施例1と同様にして、下記式(G)で表される黒色アゾ顔料(G)7部を得た。得られた黒色アゾ顔料(G)の体積平均粒子径は、約80nmであった。
式(F)で表される化合物4部に代えて、下記式(J)で表される化合物4部を使用したこと以外は、前述の実施例1と同様にして、下記式(I)で表される黒色アゾ顔料(I)6部を得た。得られた黒色アゾ顔料(I)の体積平均粒子径は、約90nmであった。
(塗料試験)
以下に示す配合にしたがって各成分を配合し、ペイントコンディショナーを使用して90分間分散させて塗料を調製した。なお、比較例3の顔料としてカーボンブラック(銘柄「#45B」、三菱化学社製)を使用し、同様にして塗料を調製した。アプリケーター(3ミル)を使用して調製した塗料を展色紙に展色した後、140℃で30分間焼き付けて厚さ約20μmの塗膜を形成し、塗膜付き展色紙を得た。
・顔料 1.5部
・商品名「スーパーベッカミンJ-820」(*1) 8.5部
・商品名「フタルキッド133~60」(*2) 17.0部
・キシレン/1-ブタノール(2/1質量比)混合溶剤 5.0部
(*1)ブチル化メラミン樹脂(大日本インキ化学工業社製)
(*2)椰子油の短油性アルキド樹脂(日立化成社製)
展色紙に形成した塗膜の反射率を測定し、光学濃度(OD値)を算出した。そして、以下に示す基準にしたがって黒色度を評価した。評価結果を表1に示す。
○:黒色度が非常に高い(OD値:2.5以上)
△:黒色度が高い(OD値:2.2以上2.5未満)
×:黒色度が低い(OD値:2.2未満)
顔料1部をニトロベンゼン10部に添加して煮沸した。そして、目視にてブリードの有無を観察し、以下に示す基準にしたがって耐溶剤性を評価した。評価結果を表1に示す。
○:ほとんどブリードしない
△:著しくブリードする
×:ほとんど溶解している
分光光度計(商品名「U-4100」、日立ハイテクノロジーズ社製)を使用し、実施例1~3、比較例1及び3の顔料をそれぞれ用いて展色紙に形成した塗膜の可視-赤外吸収スペクトルを測定した。測定したスペクトルを図1に示す。図1に示すように、比較例1の顔料を用いて形成した塗膜については、約700nm以上の波長域から反射率(%)が上昇することがわかる。これに対して、実施例1~3の顔料を用いて形成した塗膜については、いずれも約750nm以下の波長域では平滑であり(反射率が低く)、約750nmを超えた波長域から反射率(%)が上昇することがわかる。以上より、実施例1~3の顔料は比較例1の顔料に比して高い黒色度を示すことが明らかである。
Claims (6)
- アルキド/メラミン焼き付け塗料中で光学濃度(OD値)2.2以上の黒色値を有する請求項1又は2に記載の黒色アゾ顔料。
- 体積平均粒子径が20~1,000nmの粉末又は粒子である請求項1~3のいずれか一項に記載の黒色アゾ顔料。
- 請求項1~4のいずれか一項に記載の黒色アゾ顔料を含有する着色剤。
- カラーフィルター用のブラックマトリックス又は遮光フィルムを形成するために用いられる請求項5に記載の着色剤。
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