WO2010146994A1 - 水溶性アゾ化合物又はその塩、インク組成物及び着色体 - Google Patents
水溶性アゾ化合物又はその塩、インク組成物及び着色体 Download PDFInfo
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- WO2010146994A1 WO2010146994A1 PCT/JP2010/059363 JP2010059363W WO2010146994A1 WO 2010146994 A1 WO2010146994 A1 WO 2010146994A1 JP 2010059363 W JP2010059363 W JP 2010059363W WO 2010146994 A1 WO2010146994 A1 WO 2010146994A1
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- WO
- WIPO (PCT)
- Prior art keywords
- water
- ink
- salt
- ink composition
- azo compound
- Prior art date
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- -1 azo compound Chemical class 0.000 title claims abstract description 81
- 239000000203 mixture Substances 0.000 title claims abstract description 78
- 150000003839 salts Chemical class 0.000 title claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 27
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 7
- 125000005843 halogen group Chemical group 0.000 claims abstract description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 48
- 239000003960 organic solvent Substances 0.000 claims description 23
- 239000000126 substance Substances 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 11
- 229910052801 chlorine Inorganic materials 0.000 claims description 6
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 abstract description 71
- 238000003860 storage Methods 0.000 abstract description 9
- 239000001043 yellow dye Substances 0.000 abstract description 8
- AJDUTMFFZHIJEM-UHFFFAOYSA-N n-(9,10-dioxoanthracen-1-yl)-4-[4-[[4-[4-[(9,10-dioxoanthracen-1-yl)carbamoyl]phenyl]phenyl]diazenyl]phenyl]benzamide Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2NC(=O)C(C=C1)=CC=C1C(C=C1)=CC=C1N=NC(C=C1)=CC=C1C(C=C1)=CC=C1C(=O)NC1=CC=CC2=C1C(=O)C1=CC=CC=C1C2=O AJDUTMFFZHIJEM-UHFFFAOYSA-N 0.000 abstract description 5
- 239000000976 ink Substances 0.000 description 168
- 239000000123 paper Substances 0.000 description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 33
- 238000012360 testing method Methods 0.000 description 28
- 239000000975 dye Substances 0.000 description 27
- 239000002253 acid Substances 0.000 description 20
- 239000007789 gas Substances 0.000 description 19
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 18
- 239000007787 solid Substances 0.000 description 18
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- 238000006243 chemical reaction Methods 0.000 description 14
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- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 12
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- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 8
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- 150000003863 ammonium salts Chemical class 0.000 description 8
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 7
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
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- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
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- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 4
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- 229910019142 PO4 Inorganic materials 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 3
- 230000002421 anti-septic effect Effects 0.000 description 3
- 239000003429 antifungal agent Substances 0.000 description 3
- 229940121375 antifungal agent Drugs 0.000 description 3
- 239000004599 antimicrobial Substances 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- DMSMPAJRVJJAGA-UHFFFAOYSA-N benzo[d]isothiazol-3-one Chemical compound C1=CC=C2C(=O)NSC2=C1 DMSMPAJRVJJAGA-UHFFFAOYSA-N 0.000 description 3
- 229960003237 betaine Drugs 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
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- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 2
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- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
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- 230000033444 hydroxylation Effects 0.000 description 1
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- 229910001411 inorganic cation Inorganic materials 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
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- JGHGKNIEYCBHJY-UHFFFAOYSA-L magnesium;5-chloro-2-methyl-1,2-thiazol-3-one;dichloride Chemical compound [Mg+2].[Cl-].[Cl-].CN1SC(Cl)=CC1=O JGHGKNIEYCBHJY-UHFFFAOYSA-L 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- PDDANVVLWYOEPS-UHFFFAOYSA-N nitrous acid;n-propan-2-ylpropan-2-amine Chemical compound [O-]N=O.CC(C)[NH2+]C(C)C PDDANVVLWYOEPS-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
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- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 150000002896 organic halogen compounds Chemical class 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 125000001741 organic sulfur group Chemical group 0.000 description 1
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229960004321 pentaerithrityl tetranitrate Drugs 0.000 description 1
- LQPLDXQVILYOOL-UHFFFAOYSA-I pentasodium;2-[bis[2-[bis(carboxylatomethyl)amino]ethyl]amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC(=O)[O-])CCN(CC([O-])=O)CC([O-])=O LQPLDXQVILYOOL-UHFFFAOYSA-I 0.000 description 1
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- 229920005862 polyol Polymers 0.000 description 1
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- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000000377 silicon dioxide 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
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 1
- 235000010234 sodium benzoate Nutrition 0.000 description 1
- 239000004299 sodium benzoate Substances 0.000 description 1
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical compound [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 description 1
- DZCAZXAJPZCSCU-UHFFFAOYSA-K sodium nitrilotriacetate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CC([O-])=O DZCAZXAJPZCSCU-UHFFFAOYSA-K 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- LROWVYNUWKVTCU-STWYSWDKSA-M sodium sorbate Chemical compound [Na+].C\C=C\C=C\C([O-])=O LROWVYNUWKVTCU-STWYSWDKSA-M 0.000 description 1
- 235000019250 sodium sorbate Nutrition 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- XNRNJIIJLOFJEK-UHFFFAOYSA-N sodium;1-oxidopyridine-2-thione Chemical compound [Na+].[O-]N1C=CC=CC1=S XNRNJIIJLOFJEK-UHFFFAOYSA-N 0.000 description 1
- HCJLVWUMMKIQIM-UHFFFAOYSA-M sodium;2,3,4,5,6-pentachlorophenolate Chemical compound [Na+].[O-]C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl HCJLVWUMMKIQIM-UHFFFAOYSA-M 0.000 description 1
- 229950006451 sorbitan laurate Drugs 0.000 description 1
- 235000011067 sorbitan monolaureate Nutrition 0.000 description 1
- 239000001593 sorbitan monooleate Substances 0.000 description 1
- 235000011069 sorbitan monooleate Nutrition 0.000 description 1
- 229940035049 sorbitan monooleate Drugs 0.000 description 1
- 239000001587 sorbitan monostearate Substances 0.000 description 1
- 235000011076 sorbitan monostearate Nutrition 0.000 description 1
- 229940035048 sorbitan monostearate Drugs 0.000 description 1
- 229960005078 sorbitan sesquioleate Drugs 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical class C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000011410 subtraction method Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical class NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229940104261 taurate Drugs 0.000 description 1
- 229960003080 taurine Drugs 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- YODZTKMDCQEPHD-UHFFFAOYSA-N thiodiglycol Chemical compound OCCSCCO YODZTKMDCQEPHD-UHFFFAOYSA-N 0.000 description 1
- 229950006389 thiodiglycol Drugs 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- JSPLKZUTYZBBKA-UHFFFAOYSA-N trioxidane Chemical class OOO JSPLKZUTYZBBKA-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B43/00—Preparation of azo dyes from other azo compounds
- C09B43/12—Preparation of azo dyes from other azo compounds by acylation of amino groups
- C09B43/136—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents
- C09B43/16—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents linking amino-azo or cyanuric acid residues
-
- 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
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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
- C09D11/328—Inkjet printing inks characterised by colouring agents characterised by dyes
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0023—Digital printing methods characterised by the inks used
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/29—Compounds containing one or more carbon-to-nitrogen double bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34926—Triazines also containing heterocyclic groups other than triazine groups
Definitions
- the present invention relates to a water-soluble disazo compound or a salt thereof, an ink composition containing the same, and a colored body colored with these.
- ink ejection methods have been developed as recording methods using an ink jet printer, which is one of the representative methods. These all generate ink droplets and attach them to various recording materials (paper, film, fabric, etc.) for recording. In this method, since the recording head and the recording material are not in direct contact with each other, no noise is generated and the method is quiet. In addition, since it has the features that it is easy to downsize, speed up, and colorize, it has been spreading rapidly in recent years and is expected to grow greatly in the future. Conventionally, inks such as fountain pens and felt pens, and inks for ink jet recording have been prepared by dissolving a water-soluble dye in an aqueous medium.
- a water-soluble organic solvent is added to these water-based inks in order to prevent clogging of the ink at the pen tip or the ink discharge nozzle.
- These inks provide a recording image with sufficient density, do not cause clogging of the pen tip and nozzles, have good drying properties on the recording material, have little bleeding, and have excellent storage stability. Is required.
- Ink-jet nozzle clogging occurs when the water content in the ink evaporates in the vicinity of the nozzle before other solvents and additives, and the dye solidifies and precipitates when the composition state is low in water and high in solvents and additives. There are many things derived from this. Therefore, one of the very important required performances is that solids hardly precipitate even when the moisture in the ink is low. For this reason, high solubility in solvents and additives is one of the properties required for pigments.
- a method for eliminating nozzle clogging a method using a dye having a high printing density is known. By using a pigment having a high printing density, the solid content of the pigment in the ink can be reduced while maintaining the conventional printing density. This not only makes it difficult to precipitate the dye, but is also advantageous in terms of cost, and development of a dye having a high printing density is desired.
- the color area that can be expressed in a single color or mixed color becomes narrow, and the range of the color area that is desired to be expressed may be insufficient. For this reason, development of highly saturated pigments and inks containing them is desired.
- the ink performance is required to be stable for long-term storage, high in the density of the recorded image, and excellent in fastness such as water resistance, moisture resistance, light resistance, and gas resistance. It is done.
- the gas resistance is a phenomenon in which an oxidizing gas existing in the air reacts with a dye (dye) of a recorded image on the recording material or in the recording material to cause the recorded image to discolor and fade. It is resistance to.
- ozone gas is considered to be a main causative substance that promotes the discoloration and fading phenomenon of ink jet recorded images. Since this discoloration phenomenon is characteristic of ink jet recorded images, improvement of ozone gas resistance is an important technical problem in this field.
- inkjet printers have the advantage that the type of recording paper is not limited, and the price of the printer itself is low, and the spread is particularly widespread in small to medium-sized office environments such as small offices and home offices (SOHO).
- SOHO small offices and home offices
- pigment ink does not dissolve in water-based ink, it does not enter a solution state, but is a dispersed ink. Therefore, when this is used for ink jet recording, there are problems with the stability of the ink itself and the nozzles of the recording head. Problems such as clogging occur.
- pigment ink when pigment ink is used, there is often a problem in abrasion resistance. In the case of a dye ink, such a problem is considered to be relatively difficult to occur.
- the water resistance is extremely inferior to that of a pigment ink, and an improvement to the problem is strongly desired.
- dye ink tends to cause a problem that a dye attached to the surface of plain paper by ink jet recording penetrates more quickly toward the back side of the paper, resulting in a decrease in color density.
- the ink receiving layer As one method for obtaining a photographic image-recorded inkjet image, there is a method of providing an ink receiving layer on the surface of a recording material.
- the ink receiving layer provided for such a purpose often contains a porous white inorganic substance in order to speed up drying of the ink and to reduce bleeding of the pigment with high image quality.
- discoloration due to ozone gas is noticeable.
- With the recent spread of digital cameras and color printers there are increasing opportunities to print images obtained with digital cameras and the like as photographic image quality at home, so the above-mentioned color change of recorded images due to oxidizing gas is regarded as a problem. .
- yellow dyes Compared to the other three primary colors, magenta and cyan, yellow dyes have been proposed that have good resistance to oxidizing gas as well as light resistance. However, yellow dyes and yellow inks for inkjet recording that sufficiently satisfy the high sharpness and various fastnesses required by the market have not been obtained yet.
- Examples of known yellow pigments for inkjet which are excellent in water solubility and sharpness include C.I. I. (Color index) Direct yellow 132 is exemplified.
- C.I. I. (Color index) Direct yellow 132 is exemplified.
- a plurality of highly fast azo dyes have been proposed due to the recent development of yellow dyes for inkjet recording.
- Patent Document 1 discloses a yellow anionic azo compound having light resistance and water fastness.
- Patent Document 2 discloses a yellow water-soluble azo compound that is highly soluble in water and has moisture resistance, ozone gas resistance, and light resistance.
- the present invention is a water-soluble yellow pigment (compound) having high solubility in water, particularly high chroma of an image recorded on ink jet paper, and excellent light resistance and ozone gas resistance of the image, and an ink containing the same
- the purpose is to provide a composition.
- a water-soluble azo compound represented by the following formula (1) or a salt thereof (In the formula, Q represents a halogen atom, W represents a hydrogen atom or a hydroxyl group, x represents an integer of 2 to 4, and y represents an integer of 1 to 4.)
- the water-soluble azo compound of the present invention represented by the above formula (1) or a salt thereof is excellent in solubility in water, for example, in the process of producing the ink composition of the present invention containing the compound or a salt thereof, It has the characteristic that the filterability with respect to a membrane filter is favorable.
- the ink composition of the present invention containing the compound of the present invention has higher chroma than the conventional one, and is excellent in fastness such as light resistance and ozone gas resistance.
- the water-soluble azo compound of the formula (1) or a salt thereof, and the ink composition containing the same are extremely useful for ink use, particularly for ink jet recording.
- the water-soluble azo compound of the present invention represented by the above formula (1) or a salt thereof is a water-soluble yellow dye.
- acidic functional groups such as sulfo groups and carboxy groups are represented in the form of free acids.
- the present invention includes both the water-soluble azo compound represented by the formula (1) and a salt of the compound, but it is complicated to always describe both of them as “compound or salt thereof”. It is. Therefore, unless otherwise specified, for the sake of convenience, the “(water-soluble azo) compound or a salt thereof” including both of the present invention is simply described as “(water-soluble azo) compound”.
- the compound of the present invention is represented by the above formula (1).
- Q represents a halogen atom. Specific examples include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom. A fluorine atom or a chlorine atom is preferable, and a chlorine atom is particularly preferable.
- x represents an integer of 2 to 4, preferably 3.
- Y represents an integer of 1 to 4, preferably 1 or 2, and more preferably 1.
- W represents a hydrogen atom or a hydroxyl group, and a hydrogen atom is preferable.
- the water-soluble azo compound of the present invention represented by the above formula (1) can be produced, for example, as follows.
- Q, W, x, and y that are appropriately used in the following formulas (A) to (F) represent the same meaning as in the above formula (1).
- a compound of the following formula (A) obtained using a commercially available 2-amino-4-halogenophenol as a raw material is converted into methyl-form using sodium bisulfite and formalin. Convert to ⁇ -sulfonic acid derivative (B).
- 5-aminoisophthalic acid represented by the following formula (C) is diazotized, and the methyl- ⁇ -sulfonic acid derivative of the formula (B) obtained above is reacted with a reaction temperature of 0 to 15 ° C.
- a coupling reaction is carried out at a pH of 2 to 4, followed by a hydrolysis reaction at a reaction temperature of 80 to 95 ° C. and a pH of 10.5 to 11.5, whereby a compound of the following formula (D) is obtained.
- Specific examples of the compound of the above formula (F) include methylamine, ethylamine, n-propylamine, n-butylamine, 2-aminoethanol, 3-aminopropanol, 4-aminobutanol and the like.
- the compound of the above formula (1) exists also as a free acid or a salt thereof.
- the salt of the compound of the above formula (1) include salts with inorganic or organic cations.
- Specific examples of the inorganic cation salt include alkali metal salts such as lithium salts, sodium salts, potassium salts and the like; and ammonium salts.
- the quaternary ammonium represented, for example by following formula (3) is mentioned, It is not limited to these.
- Z 1 to Z 4 each independently represents a hydrogen atom, a C1-C4 alkyl group, a hydroxy C1-C4 alkyl group, or a hydroxy C1-C4 alkoxy C1-C4 alkyl group, and Z 1 to Z At least one of 4 is a group other than a hydrogen atom.
- examples of the C1-C4 alkyl group in Z 1 to Z 4 include methyl, ethyl and the like.
- examples of the hydroxy C1-C4 alkyl group include hydroxymethyl, hydroxyethyl, 3-hydroxypropyl, 2-hydroxypropyl, 4-hydroxybutyl, 3-hydroxybutyl, 2-hydroxybutyl and the like.
- examples of the hydroxy C1-C4 alkoxy C1-C4 alkyl group include hydroxyethoxymethyl, 2-hydroxyethoxyethyl, 3- (hydroxyethoxy) propyl, 3- (hydroxyethoxy) butyl, 2- (hydroxyethoxy ) Butyl and the like.
- alkali metal salts such as sodium, potassium and lithium
- organic quaternary ammonium salts such as monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine and triisopropanolamine salts
- Ammonium salt and the like.
- lithium salts, sodium salts, and ammonium salts are more preferable.
- the salt or free acid of the compound of formula (1) can be easily obtained by the following method or the like.
- a method of adding a water-soluble organic solvent such as acetone or C1-C4 alcohol to a reaction solution after completion of the final step or an aqueous solution containing the compound of formula (1) A sodium salt of the compound of the above formula (1) can be obtained as a wet cake by filtering and separating the solid precipitated by a method such as salting out by adding sodium chloride; Further, after dissolving the obtained sodium salt wet cake in water, an acid such as hydrochloric acid is added to adjust the pH appropriately, and the precipitated solid is separated by filtration, whereby the free acid of the compound of the above formula (1) is obtained.
- a mixture of a free acid and a sodium salt in which a part of the compound of the formula (1) is a sodium salt is a sodium salt. Further, after dissolving the obtained sodium salt wet cake or the dried solid thereof in water, an ammonium salt such as ammonium chloride is added, and an acid such as hydrochloric acid is added to adjust the pH appropriately to, for example, pH 1 to 3, By separating the precipitated solid by filtration, an ammonium salt of the compound of the above formula (1) can be obtained.
- a mineral acid for example, hydrochloric acid, sulfuric acid, etc.
- a wet cake of the free acid of the compound of formula (1) is added to water and stirred, for example, potassium hydroxide; lithium hydroxide; aqueous ammonia; hydroxylation of organic quaternary ammonium of formula (3)
- a salt to form a salt, a potassium salt, a lithium salt, an ammonium salt, a quaternary ammonium salt, or the like corresponding to each added compound can be obtained.
- a salt of the compound of the above formula (1) may change the physical properties such as solubility or the ink performance when used as an ink depending on the type of the salt. For this reason, it is also preferable to select the type of salt according to the intended ink performance.
- the compound of the present invention of the above formula (1) can be isolated as a solid free acid by adding a mineral acid such as hydrochloric acid, and the resulting free acid solid is water or, for example, hydrochloric acid water or the like.
- a mineral acid such as hydrochloric acid
- the resulting free acid solid is water or, for example, hydrochloric acid water or the like.
- inorganic salts contained as impurities, such as sodium chloride and sodium sulfate, can be removed.
- the free acid of the compound of the present invention obtained as described above is obtained by treating the obtained wet cake or its dried solid with a desired inorganic or organic base in water to give a salt of the corresponding compound. Solution.
- Examples of the inorganic base include alkali metal hydroxides such as lithium hydroxide, sodium hydroxide and potassium hydroxide; alkali metal carbonates such as lithium carbonate, sodium carbonate and potassium carbonate; ammonium hydroxide (ammonia water) and the like. Is mentioned.
- Examples of the organic base include, for example, organic amines corresponding to the quaternary ammonium represented by the above formula (3), such as alkanolamines such as diethanolamine and triethanolamine, but are not limited thereto. .
- the compound of the present invention is suitable for dyeing natural and synthetic fiber materials or blended products, and also for producing inks for writing and ink jet recording.
- the reaction liquid after completion of the final step in the synthesis reaction of the compound of the present invention represented by the formula (1) can be directly used for the production of the ink composition of the present invention.
- the reaction solution or the like is dried by the above-described method or a spray drying method to isolate the compound, the obtained compound can be processed into an ink composition.
- the compound of the above formula (1) is usually 0.1 to 20% by mass, preferably 1 to 10% by mass, more preferably 2 to 8% by mass in the total mass of the ink composition. contains.
- the compound of the above formula (1) is dissolved in water or a mixed solution (also referred to as an aqueous medium) of water and a water-soluble organic solvent (an organic solvent that can be mixed with water).
- An ink preparation agent is added as necessary.
- a metal cation chloride contained as an impurity, such as sodium chloride; sulfate, such as sodium sulfate; Is preferred.
- the total content of sodium chloride and sodium sulfate is about 1% by mass or less with respect to the total mass of the compound of formula (1), and the lower limit is 0% by mass, that is, below the detection limit of the detection instrument. It's okay.
- Examples of a method for producing a compound having a small amount of inorganic impurities include a method using a known reverse osmosis membrane; a dry product or wet cake of the compound of the present invention, for example, acetone or C1-C4 alcohol (for example, methanol, ethanol, isopropanol, etc.) ), A suspension purification or crystallization method in addition to the water-soluble organic solvent or hydrous water-soluble organic solvent; and desalting treatment and the like may be performed by these methods.
- the ink composition of the present invention is prepared using water as a medium, and may optionally contain a water-soluble organic solvent and an ink preparation agent as long as the effects of the present invention are not impaired.
- the water-soluble organic solvent dissolves the dye; prevents the composition from drying (maintains a wet state); adjusts the viscosity of the composition; promotes penetration of the dye into the recording material; adjusts the surface tension of the composition; It is used for the purpose of defoaming the product and is preferably contained in the ink composition of the present invention.
- ink preparation agent examples include antiseptic / antifungal agents, pH adjusters, chelating reagents, rust preventive agents, ultraviolet absorbers, viscosity adjusters, dye dissolving agents, antifading agents, emulsion stabilizers, surface tension adjusters, anti-foaming agents.
- Known additives such as foaming agents may be mentioned.
- the content of the water-soluble organic solvent is 0 to 60% by mass, preferably 10 to 50% by mass, and the ink preparation agent is 0 to 20% by mass, preferably 0%, based on the total mass of the ink composition of the present invention. It is preferable to use up to 15% by mass.
- the balance other than the compound of the above formula (1), the water-soluble organic solvent, and the ink preparation agent is water.
- water-soluble organic solvent examples include C1-C4 alcohols such as methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, sec-butanol and tert-butanol; N, N-dimethylformamide, N Amides such as 1, N-dimethylacetamide; 2-pyrrolidone, N-methyl-2-pyrrolidone, hydroxyethyl-2-pyrrolidone, 1,3-dimethylimidazolidin-2-one or 1,3-dimethylhexahydropyrimido Heterocyclic ketones such as -2-one; ketones or ketoalcohols such as acetone, methyl ethyl ketone, 2-methyl-2-hydroxypentan-4-one; cyclic ethers such as tetrahydrofuran, dioxane; ethylene glycol, 1,2- or 1,3-propylene glycol, 1, -Or mono having
- the water-soluble organic solvent includes substances that are solid at room temperature, such as trimethylolpropane.
- the substance is a solid, it shows water solubility, and an aqueous solution containing the substance shows the same properties as a water-soluble organic solvent and can be used for the same purpose. Therefore, in this specification, for the sake of convenience, even such a solid substance is included in the category of a water-soluble organic solvent as long as it can be used for the same purpose.
- water-soluble organic solvent examples include isopropanol, glycerin, mono-, di- or triethylene glycol, dipropylene glycol, 2-pyrrolidone, hydroxyethyl-2-pyrrolidone, N-methyl-2-pyrrolidone, trimethylolpropane.
- butyl carbitol more preferably isopropanol, glycerin, diethylene glycol, 2-pyrrolidone, N-methyl-2-pyrrolidone, trimethylolpropane, and butyl carbitol.
- antiseptic / antifungal agent examples include organic sulfur, organic nitrogen sulfur, organic halogen, haloallylsulfone, iodopropargyl, N-haloalkylthio, benzothiazole, nitrile, pyridine, 8-oxyquinoline, isothiazoline, dithiol, pyridine oxide, nitropropane, organotin, phenol, quaternary ammonium salt, triazine, thiadiazine, anilide, adamantane, dithiocarbamate, bromo Indanone compound, benzyl bromacetate compound, inorganic salt compound and the like can be mentioned.
- An example of the organic halogen compound is sodium pentachlorophenol.
- Examples of pyridine oxide compounds include sodium 2-pyridinethiol-1-oxide.
- Examples of the isothiazoline compounds include 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazoline-3-one, 5 -Chloro-2-methyl-4-isothiazolin-3-one magnesium chloride, 5-chloro-2-methyl-4-isothiazolin-3-one calcium chloride, 2-methyl-4-isothiazolin-3-one calcium chloride, etc. Can be mentioned.
- antiseptic / antifungal agents include sodium acetate, sodium sorbate, sodium benzoate and the like; and trade names Proxel RTM GXL (S) and Proxel RTM XL-2 (S) manufactured by Arch Chemical Co., Each is listed. In the present specification, the superscript “RTM” means a registered trademark.
- any substance can be used as long as it can control the pH of the ink in the range of 6.0 to 11.0 for the purpose of improving the storage stability of the ink.
- alkanolamines such as diethanolamine and triethanolamine
- hydroxides of alkali metals such as lithium hydroxide, sodium hydroxide and potassium hydroxide
- ammonium hydroxides carbonates of alkali metals such as lithium carbonate, sodium carbonate and potassium carbonate Salts
- aminosulfonic acids such as taurine; and the like.
- chelating reagent examples include disodium ethylenediaminetetraacetate, sodium nitrilotriacetate, sodium hydroxyethylethylenediaminetriacetate, sodium diethylenetriaminepentaacetate, sodium uracil diacetate, and the like.
- rust preventive examples include acid sulfite, sodium thiosulfate, ammonium thioglycolate, diisopropylammonium nitrite, pentaerythritol tetranitrate, dicyclohexylammonium nitrite and the like.
- the ultraviolet absorber examples include benzophenone compounds, benzotriazole compounds, cinnamic acid compounds, triazine compounds, and stilbene compounds.
- a compound that absorbs ultraviolet rays such as a benzoxazole-based compound and emits fluorescence, a so-called fluorescent whitening agent, and the like can also be used.
- examples of the viscosity modifier include water-soluble polymer compounds in addition to water-soluble organic solvents, and examples thereof include polyvinyl alcohol, cellulose derivatives, polyamines, and polyimines.
- dye solubilizer examples include urea, ⁇ -caprolactam, ethylene carbonate, and the like. Of these, urea is preferably used.
- the anti-fading agent is used for the purpose of improving image storage stability.
- various organic and metal complex antifading agents can be used.
- organic anti-fading agents include hydroquinones, alkoxyphenols, dialkoxyphenols, phenols, anilines, amines, indanes, chromans, alkoxyanilines, heterocycles, etc. Includes nickel complexes and zinc complexes.
- Examples of the surface tension adjusting agent include surfactants, and examples include anionic surfactants, amphoteric surfactants, cationic surfactants, and nonionic surfactants.
- anionic surfactants include alkyl sulfocarboxylates, ⁇ -olefin sulfonates, polyoxyethylene alkyl ether acetates, N-acyl amino acids and salts thereof, N-acyl methyl taurate, alkyl sulfate polyoxyalkyl ethers Sulfate, alkyl sulfate polyoxyethylene alkyl ether phosphate, rosin acid soap, castor oil sulfate ester, lauryl alcohol sulfate ester, alkylphenol type phosphate ester, alkyl type phosphate ester, alkylaryl sulfonate, diethylsulfosuccinate Salts, diethylhexylsulfosuccinate, dioctylsulfosuccinate and the like.
- Examples of the cationic surfactant include 2-vinylpyridine derivatives and poly-4-vinylpyridine derivatives.
- Amphoteric surfactants include lauryldimethylaminoacetic acid betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine, polyoctylpolyaminoethylglycine, imidazoline derivatives, etc. Is mentioned.
- Nonionic surfactants include ethers such as polyoxyethylene nonylphenyl ether, polyoxyethylene octylphenyl ether, polyoxyethylene dodecylphenyl ether, polyoxyethylene oleyl ether, polyoxyethylene lauryl ether, polyoxyethylene alkyl ether; Ester systems such as polyoxyethylene oleate, polyoxyethylene distearate, sorbitan laurate, sorbitan monostearate, sorbitan monooleate, sorbitan sesquioleate, polyoxyethylene monooleate, polyoxyethylene stearate; 2,4,7,9-tetramethyl-5-decyne-4,7-diol, 3,6-dimethyl-4-octyne-3,6-diol, 3,5-dimethyl -1-hexyne-3-acetylene glycol (alcohol) -based ol; Nissin Chemical Industry Co., Ltd .: trade name Surfyn
- antifoaming agents include highly oxidized oils, glycerin fatty acid esters, fluorines, and silicone compounds.
- the surface tension of the ink composition of the present invention is usually 25 to 70 mN / m, more preferably 25 to 60 mN / m, and the viscosity is preferably 30 mPa ⁇ s or less, more preferably 20 mPa ⁇ s or less. .
- the ink composition of the present invention there is no particular limitation on the order of dissolving each agent such as an additive.
- the water used for the preparation of the ink composition is preferably a material with few impurities such as ion exchange water and distilled water.
- fine filtration may be performed using a membrane filter or the like to remove impurities in the ink composition.
- the pore size of the filter used for microfiltration is usually 1 to 0.1 ⁇ m, preferably 0.8 to 0.1 ⁇ m.
- the ink composition containing the compound of the present invention is suitable for use in printing, copying, marking, writing, drafting, stamping, or recording (printing), particularly inkjet recording.
- the ink composition of the present invention is less likely to precipitate solids even when dried in the vicinity of the nozzles of the recording head of an ink jet printer, and for this reason, the recording head is also less likely to block.
- the ink jet recording method of the present invention As a method for recording on a recording material by the ink jet recording method of the present invention, the following method may be mentioned. That is, a container filled with the ink composition of the present invention is loaded into a predetermined position of an ink jet printer, the ink composition of the present invention is used as ink, and ink droplets of the ink are ejected according to a recording signal to be recorded. This is a method for recording on a material.
- Some inkjet printers use, for example, a piezo method using mechanical vibration; a bubble jet (registered trademark) method using bubbles generated by heating; and the like.
- the ink jet recording method of the present invention can be used by any method.
- ink composition of the present invention can also be used as such an ink set. Further, the ink composition of the present invention may be used for one of the ink sets, and a known ink (composition) may be used for the other.
- the ink composition of the present invention may be a yellow ink composition containing the compound of the present invention and a known yellow dye for the purpose of fine-tuning the hue within a range that does not impair the effects obtained by the present invention.
- the compound of the present invention can be used in combination with a magenta dye or a cyan dye for the purpose of toning inks of other colors, such as black ink, or for preparing red ink or green ink.
- the ink composition of the present invention can be used in combination with inks of various colors such as magenta, cyan, and, if necessary, green, blue (or violet), red, and black. .
- each color ink may be filled in each container, and these containers may be loaded into a predetermined position of the ink jet printer and used for ink jet recording.
- Examples of the recording material used in the inkjet recording method of the present invention include information transmission sheets such as paper and film, fibers and fabrics (cellulose, nylon, wool, etc.), leather, base materials for color filters, and the like.
- a transmission sheet is preferred.
- the information transmission sheet is not particularly limited, and a plain paper as well as a surface-treated sheet, specifically, a paper, synthetic paper, a substrate such as a film provided with an ink receiving layer, or the like is used.
- the ink receiving layer is a layer having an action such as absorbing ink and accelerating its drying.
- the ink receiving layer is formed by, for example, a method of impregnating or coating the base material with a cationic polymer; inorganic fine particles capable of absorbing the pigment in the ink, together with a hydrophilic polymer such as polyvinyl alcohol or polyvinylpyrrolidone, on the surface of the base material. It is provided by the method of coating; Examples of the material of the inorganic fine particles that can absorb the coloring matter in the ink include porous silica, alumina sol, and special ceramics.
- the information transmission sheet having such an ink receiving layer is usually called an inkjet exclusive paper, an inkjet exclusive film, a glossy paper, a glossy film or the like.
- plain paper means paper that is not particularly provided with an ink receiving layer, and many different types are commercially available depending on the application.
- plain papers double-sided plain plain paper (manufactured by Seiko Epson Corporation); PB PAPER GF-500 (manufactured by Canon Inc.); Multipurse Paper, All-in-one Printing Paper ( Hewlett Packard).
- plain paper copy (PPC) paper or the like whose use is not limited to ink jet recording is also plain paper.
- the colored product of the present invention comprises: (a) the water-soluble azo compound of the present invention; (b) the ink composition of the present invention containing the compound; (c) the ink of the present invention containing the compound and a water-soluble organic solvent.
- a composition means a colored material.
- the substance to be colored is not particularly limited, and examples thereof include, but are not limited to, the recording material described above.
- the above-mentioned recording material is colored.
- a coloring method for the substance is not particularly limited, and examples thereof include a printing method such as a dip dyeing method, a textile printing method, and screen printing, an ink jet recording method of the present invention, and the ink jet recording method of the present invention is preferable.
- a colored body colored by the ink jet recording method of the present invention is preferable.
- the water-soluble azo compound of the present invention represented by the above formula (1) is excellent in solubility in water or a water-soluble organic solvent. Moreover, it has the characteristic that the filterability with respect to a membrane filter, for example in the process of manufacturing the ink composition of this invention is favorable.
- the ink composition of the present invention is very clear on a recording material such as plain paper and an information transmission sheet having an ink receiving layer, has a high saturation and printing density, and is capable of producing a yellow recorded image of an ideal hue. give. Therefore, it is also possible to faithfully reproduce a photographic color image on paper.
- the ink composition of the present invention has very good storage stability without solid deposition, physical property change, hue change, etc. after long-term storage.
- the ink composition of the present invention uses a continuous ink jet printer, and is used physically even when the ink is recirculated at a relatively long time interval or intermittently used by an on-demand ink jet printer. No change in properties.
- the image recorded on the information transmission sheet having the ink receiving layer by the ink composition of the present invention has various fastness properties such as water resistance, moisture resistance, ozone gas resistance, abrasion resistance, and light resistance. For this reason, the long-term storage stability of photographic images is also excellent.
- the water-soluble azo compound of the formula (1) of the present invention and the ink composition of the present invention containing the compound are extremely useful for various ink applications, particularly for ink jet recording.
- Example 1 (Process 1) 18.1 parts of 5-aminoisophthalic acid were dissolved in 200 parts of water while adjusting the pH to 6 with sodium hydroxide, and then 7.2 parts of sodium nitrite was added. This solution was added dropwise to 200 parts of 5% hydrochloric acid at 0 to 10 ° C. over 30 minutes, followed by stirring at 10 ° C. or lower for 1 hour to carry out diazotization reaction to prepare a diazo reaction liquid.
- reaction solution was cooled to 20 to 25 ° C., 800 parts of acetone was added to the reaction solution, and the mixture was stirred at 20 to 25 ° C. for 1 hour.
- the precipitated solid was separated by filtration to obtain 50.0 parts of a wet cake.
- This wet cake was dried with a hot air dryer at 80 ° C. to obtain 13.0 parts of a sodium salt ( ⁇ max: 401.5 nm) of the water-soluble azo compound of the present invention represented by the following formula (5).
- Example 2 In the same manner as in Example 1 except that 10.0 parts of methylamine (40% aqueous solution) in Example 1 (Step 2) was changed to 7.0 parts of ethylamine, the compound represented by the following formula (6) was used. 13.5 parts ( ⁇ max: 403 nm) of a sodium salt of a water-soluble azo compound was obtained.
- Example 3 It is represented by the following formula (7) in the same manner as in Example 1 except that 10.0 parts of methylamine (40% aqueous solution) in Example 1 (Step 2) is 9.0 parts of 2-aminoethanol. 14.5 parts ( ⁇ max: 404 nm) of the sodium salt of the water-soluble azo compound of the present invention was obtained.
- Example 4 to 6 [(A) Preparation of ink]
- Each of the azo compounds of the present invention obtained in Examples 1 to 3 above [sodium salts of formulas (5) to (7)] is used as a dye, and the compositions shown in Table 2 below are mixed to form a solution.
- an ink composition of the present invention was obtained.
- the obtained ink composition was filtered through a 0.45 ⁇ m membrane filter to remove impurities, and a test ink was prepared.
- the pH of the test ink was in the range of 8.0 to 9.5.
- “surfactant” used was the trade name Surfinol RTM 104PG50 manufactured by Nissin Chemical Co., Ltd.
- Preparations of inks using the compounds obtained in Examples 1, 2, and 3 are referred to as Example 4, Example 5, and Example 6, respectively.
- Comparative Example 1 Comparative inks were prepared in the same manner as in Examples 4 to 6 except that the compound described in Example 10 of Patent Document 1 was used instead of the compound of the present invention obtained in Examples 1 to 3. This ink preparation is referred to as Comparative Example 1.
- the structural formula of the compound used in Comparative Example 1 is shown in the following formula (8).
- Comparative Example 2 Comparative inks were prepared in the same manner as in Examples 4 to 6, except that the dye described in Example 2 of Patent Document 2 was used in place of the compounds of the present invention obtained in Examples 1 to 3. This ink preparation is referred to as Comparative Example 2.
- the structural formula of the compound used in Comparative Example 2 is shown in the following formula (9).
- Glossy paper 1 manufactured by Canon Inc., trade name: Canon photo paper, Glossy Pro [Platinum grade] Glossy paper 2: manufactured by Seiko Epson Corporation, trade name: photographic paper Krispia (high gloss) Glossy paper 3: Brother Industries, Ltd., trade name: Photo glossy paper BP71G
- the reflection density was measured for the portion where the reflection density D value of the recorded matter before the test was closest to 1.0.
- a colorimetry system (trade name: SpectroEye RTM , manufactured by X-Light) was used. Colorimetry was performed under the conditions of DIN, a viewing angle of 2 degrees, and a light source D65 as a density standard.
- Various test methods for recorded images and evaluation methods for test results are described below.
- Comparative Example 1 showed extremely inferior results to each of the examples in both the saturation and xenon light resistance tests. Moreover, the comparative example 2 was a result inferior to each Example in both the xenon light resistance and ozone gas resistance test. On the other hand, each example showed a result superior to each comparative example in all the tests of chroma, xenon light resistance and ozone gas resistance of the recorded matter.
- the water-soluble azo compound of the present invention which is a yellow pigment and the yellow ink composition of the present invention containing the same give a recorded image with high saturation. In addition, it has excellent fastness such as light resistance and ozone gas resistance. Therefore, the compound and the ink composition containing the compound are very useful for various recording applications, particularly for inkjet recording applications.
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Abstract
Description
従来、万年筆やフェルトペン等のインク、及びインクジェット記録用のインクとしては、水溶性の染料を水性媒体に溶解したインクが使用されている。これらの水性インクには、ペン先やインク吐出ノズルでのインクの目詰まりを防止すべく、一般に水溶性の有機溶剤が添加されている。これらのインクにおいては、十分な濃度の記録画像を与えること、ペン先やノズルの目詰まりを生じないこと、被記録材上での乾燥性が良いこと、滲みが少ないこと、保存安定性に優れること等が要求される。
また、インクの性能としては、長期の保存に対して安定であり、記録画像の濃度が高く、しかもその画像が耐水性、耐湿性、耐光性、耐ガス性等の堅牢度に優れることが求められる。ここで耐ガス性とは、空気中に存在する酸化作用を持つガスが、被記録材上又は被記録材中で、記録画像の色素(染料)と反応し、記録画像を変退色させるという現象に対する耐性のことである。酸化性ガスの中でも特にオゾンガスは、インクジェット記録画像の変退色現象を促進させる主要な原因物質とされている。この変退色現象はインクジェット記録画像に特徴的なものであるため、耐オゾンガス性の向上はこの分野における重要な技術的課題である。
これらの性能を満たす目的で、顔料インクを用いる方法が提案されている。しかし、顔料インクは色素が水性インク中には溶解しないため溶液状態とはならず、分散状態のインクであるため、これをインクジェット記録に用いると、インク自体の安定性の問題や記録ヘッドのノズル詰まりの問題等が生じる。また、顔料インクを使用した場合、耐擦性にも問題を生じることが多い。染料インクの場合、このような問題は比較的起こりにくいとされるが、特に耐水性において顔料インクと比較して著しく劣り、それに対する改良が強く望まれている。また、染料インクは顔料インクと異なり、インクジェット記録により普通紙の表面に付着させた色素が、より速く紙の裏面方向へ浸透し、その結果、発色濃度が低下するという問題が起こりやすい。
特許文献1には、耐光及び耐水堅牢度を有する黄色の陰イオン性アゾ化合物が開示されている。
特許文献2には、水に対する溶解性が高く、耐湿性、耐オゾンガス性、及び耐光性を有する黄色の水溶性アゾ化合物が開示されている。
上記式(1)において、Qが塩素原子であり、xが3であり、yが1又は2である上記1)に記載の水溶性アゾ化合物又はその塩、
上記1)乃至4)のいずれか一項に記載の水溶性アゾ化合物又はその塩を含有するインク組成物、
6)
水溶性有機溶剤をさらに含有する上記5)に記載のインク組成物、
7)
インクジェット記録用である上記5)又は6)に記載のインク組成物、
8)
上記5)乃至7)のいずれか一項に記載のインク組成物をインクとして用い、該インクのインク滴を記録信号に応じて吐出させて被記録材に付着させ、記録を行うインクジェット記録方法、
9)
上記被記録材が情報伝達用シートである上記8)に記載のインクジェット記録方法、
10)
上記情報伝達用シートが普通紙又は多孔性白色無機物を含むインク受容層を有するシートである上記9)に記載のインクジェット記録方法、
11)
(a)上記1)乃至4)のいずれか一項に記載の水溶性アゾ化合物又はその塩、
(b)上記1)乃至4)のいずれか一項に記載の水溶性アゾ化合物又はその塩を含有するインク組成物、又は、
(c)上記1)乃至4)のいずれか一項に記載の水溶性アゾ化合物又はその塩及び水溶性有機溶剤を含有するインク組成物、のいずれかにより着色された着色体、
12)
上記8)に記載のインクジェット記録方法により着色された着色体、
13)
上記5)に記載のインク組成物を含む容器が装填されたインクジェットプリンタ、
に関する。
上記式(1)の本発明の水溶性アゾ化合物又はその塩は、水溶性の黄色色素である。なお、本明細書においては特に断りがない限り、スルホ基、カルボキシ基等の酸性官能基は遊離酸の形で表す。また、本発明は、上記の通り、式(1)で表される水溶性アゾ化合物及び該化合物の塩の両者を含むものであるが、両者を常に「化合物又はその塩」等と併記するのは煩雑である。このため特に断りがない限り、便宜上、本発明の「(水溶性アゾ)化合物又はその塩」の両者を含めて単に「(水溶性アゾ)化合物」と簡略して、以下記載する。
式(1)中、Qはハロゲン原子を表す。具体例としては、フッ素原子、塩素原子、臭素原子、ヨウ素原子が挙げられ、フッ素原子又は塩素原子が好ましく、塩素原子が特に好ましい。
特開2004-75719号公報に記載の方法に準じて、市販品の2-アミノ-4-ハロゲノフェノールを原料として得られる下記式(A)の化合物を、重亜硫酸ナトリウム及びホルマリンを用いてメチル-ω-スルホン酸誘導体(B)に変換する。次いで、常法により、下記式(C)で表される5-アミノイソフタル酸をジアゾ化し、先に得られた式(B)のメチル-ω-スルホン酸誘導体と、反応温度0~15℃、pH2~4でカップリング反応を行い、引き続き、反応温度80~95℃、pH10.5~11.5で加水分解反応を行うことにより、下記式(D)の化合物が得られる。
例えば、式(1)の化合物の合成反応における、最終工程終了後の反応液、あるいは式(1)の化合物を含む水溶液等に、例えばアセトンやC1-C4アルコール等の水溶性有機溶剤を加える方法;塩化ナトリウムを加えて塩析する方法;等の方法によって析出した固体を濾過分離することにより、上記式(1)の化合物のナトリウム塩等をウェットケーキとして得ることができる。
また、得られたナトリウム塩のウェットケーキを水に溶解後、塩酸等の酸を加えてそのpHを適宜調整し、析出した固体を濾過分離することにより、上記式(1)の化合物の遊離酸を、あるいは式(1)の化合物の一部がナトリウム塩である遊離酸とナトリウム塩との混合物を得ることもできる。また、得られたナトリウム塩のウェットケーキ又はその乾燥固体を水に溶解後、塩化アンモニウム等のアンモニウム塩を添加し、塩酸等の酸を加えてそのpHを適宜、例えばpH1~3に調整し、析出した固体を濾過分離することにより、上記式(1)の化合物のアンモニウム塩を得ることができる。添加する塩化アンモニウムの量及び/又はpHを適宜調整することにより、式(1)の化合物のアンモニウム塩と式(1)の化合物のナトリウム塩との混合物;式(1)の化合物の遊離酸とアンモニウム塩との混合物;等を得ることもできる。
また、後記するように上記反応終了後の反応液に、鉱酸(例えば塩酸、硫酸等)を加えて直接遊離酸の固体を得ることもできる。この場合には、式(1)の化合物の遊離酸のウェットケーキを水に加えて撹拌し、例えば、水酸化カリウム;水酸化リチウム;アンモニア水;式(3)の有機4級アンモニウムの水酸化物;等を添加して造塩することにより、各々添加した化合物に応じたカリウム塩;リチウム塩;アンモニウム塩;4級アンモニウム塩;等を得ることもできる。遊離酸のモル数に対して、加える上記の水酸化物等のモル数を制限することにより、例えばリチウム塩とナトリウム塩との混塩等;さらにはリチウム塩、ナトリウム塩、及びアンモニウム塩の混塩等;も調製することが可能である。上記式(1)の化合物の塩は、その塩の種類により溶解性等の物理的な性質、あるいはインクとして用いた場合のインクの性能が変化する場合もある。このため、目的とするインク性能等に応じて塩の種類を選択することも好ましく行われる。
有機ハロゲン系化合物としては、例えばペンタクロロフェノールナトリウムが挙げられる。
ピリジンオキシド系化合物としては、例えば2-ピリジンチオール-1-オキサイドナトリウムが挙げられる。
イソチアゾリン系化合物としては、例えば、1,2-ベンズイソチアゾリン-3-オン、2-n-オクチル-4-イソチアゾリン-3-オン、5-クロロ-2-メチル-4-イソチアゾリン-3-オン、5-クロロ-2-メチル-4-イソチアゾリン-3-オンマグネシウムクロライド、5-クロロ-2-メチル-4-イソチアゾリン-3-オンカルシウムクロライド、2-メチル-4-イソチアゾリン-3-オンカルシウムクロライド等が挙げられる。
その他の防腐防黴剤としては、酢酸ナトリウム、ソルビン酸ナトリウム、安息香酸ナトリウム等;、さらにはアーチケミカル社製の商品名プロクセルRTMGXL(S)及びプロクセルRTMXL-2(S);等が、それぞれ挙げられる。なお、本明細書中において、上付きの「RTM」は登録商標を意味する。
インク受容層とは、インクを吸収してその乾燥を早める等の作用を有する層である。インク受容層は、例えば上記基材にカチオン系ポリマーを含浸又は塗工する方法;インク中の色素を吸収し得る無機微粒子をポリビニルアルコールやポリビニルピロリドン等の親水性ポリマーと共に、上記基材の表面に塗工する方法;等により設けられる。上記のインク中の色素を吸収し得る無機微粒子の材質としては、多孔質シリカ、アルミナゾル、特殊セラミックス等が挙げられる。
このようなインク受容層を有する情報伝達用シートは、通常インクジェット専用紙、インクジェット専用フィルム、光沢紙、光沢フィルム等と呼ばれる。インク受容層を有する情報伝達シートの代表的な市販品の例としては、キヤノン(株)製、商品名プロフェッショナルフォトペーパー、及び光沢ゴールド;セイコーエプソン(株)製、商品名写真用紙クリスピア(高光沢)、写真用紙(光沢);日本ヒューレット・パッカード(株)製、商品名アドバンスフォト用紙(光沢);富士フィルム(株)製、商品名画彩 写真仕上げPro;等が挙げられる。
また、普通紙とは、特にインク受容層を設けていない紙のことを意味し、用途によってさまざまなものが数多く市販されている。市販されている普通紙のうち、インクジェット記録用としては、両面上質普通紙(セイコーエプソン株式会社製);PB PAPER GF-500(キヤノン株式会社製);Multipurpose Paper、All-in-one Printing Paper(Hewlett Packard社製);等が挙げられる。また、特に用途をインクジェット記録に限定しないプレーンペーパーコピー(PPC)用紙等も普通紙である。
本発明のインク組成物をインクジェットインクとして使用しても、ノズル付近におけるインク組成物の乾燥による固体析出は非常に起こりにくく、噴射器(記録ヘッド)を閉塞することもない。また、本発明のインク組成物は連続式インクジェットプリンタを用い、比較的長い時間間隔においてインクを再循環させて使用する場合においても、又はオンデマンド式インクジェットプリンタによる断続的な使用においても、物理的性質の変化を起こさない。
さらに、本発明のインク組成物により、インク受容層を有する情報伝達用シートに記録された画像は、耐水性、耐湿性、耐オゾンガス性、耐擦性、耐光性等の各種堅牢性が良好であり、この理由から、写真調の画像の長期保存安定性にも優れている。また、従来のインクと比較して、普通紙上での彩度、明度、印字濃度等の発色性にも優れている。
このように、本発明の式(1)の水溶性アゾ化合物、及びこれを含有する本発明のインク組成物は、各種インク用途、特にインクジェット記録用のインク用途に極めて有用である。
合成した化合物のうち、λmax(最大吸収波長)を測定したものについては、pH7~8の水溶液中での測定値を示した。
また、実施例中で得た化合物の各構造式において、カルボキシ基、スルホ基等の酸性官能基は、遊離酸の形で記載した。
実施例中、目的物を晶析する際にアセトンを使用したものについては、アセトンの代わりにイソプロパノールを使用しても同様に晶析することができた。
なお、実施例で得られた本発明の化合物の室温における水に対する溶解度はいずれも100g/L以上であった。
(工程1)
5-アミノイソフタル酸18.1部を水酸化ナトリウムでpH6に調整しながら水200部に溶解し、次いで亜硝酸ナトリウム7.2部を加えた。この溶液を0~10℃で、5%塩酸200部中に30分間かけて滴下した後、10℃以下で1時間撹拌してジアゾ化反応を行い、ジアゾ反応液を調製した。一方、2-(スルホプロポキシ)-5-クロロアニリン26.6部を、水酸化ナトリウムでpH7に調整しながら水130部に溶解し、10.4部の重亜硫酸ナトリウム及び8.6部の35%ホルマリンを用いて、常法によりメチル-ω-スルホン酸誘導体とした。得られたメチル-ω-スルホン酸誘導体を、先に調製したジアゾ反応液中に加え、0~15℃、pH2~4で24時間撹拌した。反応液を水酸化ナトリウムでpH11とした後、同pHを維持しながら80~95℃で5時間撹拌した。得られた反応液を、5%塩酸200部中に滴下し、析出固体を濾過分離することにより、下記式(4)で表されるアゾ化合物100部をウェットケーキとして得た。
250部の氷水中にライオン社製、商品名:レオコールRTMTD90(界面活性剤)0.10部を加えて激しく撹拌し、その中に塩化シアヌル3.6部を添加し0~5℃で30分間撹拌し、懸濁液を得た。続いて上記式(4)で表される化合物のウェットケーキ100部を水200部に溶解し、この溶液に上記の懸濁液を30分間かけて滴下した。滴下終了後pH6~8、25~45℃で6時間撹拌した。得られた液に、メチルアミン(40%水溶液)10.0部を加え、pH7~9、75~90℃で4時間撹拌した。得られた反応液を20~25℃まで冷却後、この反応液にアセトン800部を加え、20~25℃で1時間撹拌した。析出固体を濾過分離することによりウェットケーキ50.0部を得た。このウェットケーキを80℃の熱風乾燥機で乾燥することにより、下記式(5)で表される本発明の水溶性アゾ化合物のナトリウム塩(λmax:401.5nm)13.0部を得た。
実施例1の(工程2)のメチルアミン(40%水溶液)10.0部をエチルアミン7.0部とする以外は実施例1と同様にして、下記式(6)で表される本発明の水溶性アゾ化合物のナトリウム塩13.5部(λmax:403nm)を得た。
実施例1の(工程2)のメチルアミン(40%水溶液)10.0部を2-アミノエタノール9.0部とする以外は実施例1と同様にして、下記式(7)で表される本発明の水溶性アゾ化合物のナトリウム塩14.5部(λmax:404nm)を得た。
[(A)インクの調製]
上記実施例1~3で得られた本発明のアゾ化合物[式(5)~(7)のナトリウム塩]のそれぞれを色素として用い、下記表2に示した組成を混合して溶液とすることにより、本発明のインク組成物を得た。得られたインク組成物を、それぞれ0.45μmのメンブランフィルタで濾過して夾雑物を除き、試験用のインクを調製した。なお、この試験用インクのpHは8.0~9.5の範囲であった。また、下記表2中、「界面活性剤」は、日信化学株式会社製の商品名サーフィノールRTM104PG50を使用した。
実施例1、2、及び3で得た化合物を使用したインクの調製を、それぞれ実施例4、実施例5、及び実施例6とする。
実施例1~3で得た本発明の化合物の代わりに特許文献1の例10に記載の化合物を用いる以外は、実施例4~6と同様にして比較用のインクを調製した。このインクの調製を比較例1とする。比較例1に用いた化合物の構造式を下記式(8)に示す。
実施例1~3で得た本発明の化合物の代わりに特許文献2の実施例2に記載の色素を用いる以外は、実施例4~6と同様にして比較用のインクを調製した。このインクの調製を比較例2とする。比較例2に用いた化合物の構造式を下記式(9)に示す。
上記実施例4~6、及び比較例1~2で調製した各インクを、インクジェットプリンタ(キヤノン株式会社製 商品名:PIXUSRTM ip4500)を用いて、下記する3種類の光沢紙(インクジェット専用紙)にインクジェット記録を行った。インクジェット記録の際、反射濃度が数段階の階調が得られるように画像パターンを作り、黄色のグラデーションを有する記録物を得た。得られた記録物を試験片とし、各種の試験を行った。
光沢紙1:キヤノン株式会社製、商品名:キヤノン写真用紙・光沢プロ[プラチナグレード]
光沢紙2:セイコーエプソン株式会社製、商品名:写真用紙クリスピア(高光沢)
光沢紙3:ブラザー工業株式会社製、商品名:写真光沢紙BP71G
各試験片のうち、反射濃度が最も高い階調部分について、上記測色システムによりイエロー彩度C*値を測定した。評価基準は以下の通りである。
C*値が95以上・・・・・・・・・・・○
C*値が95未満90以上・・・・・・・△
C*値が90未満・・・・・・・・・・・×
結果を下記表3に示す。
各試験片をホルダーに設置して、キセノンウェザオメータXL75[スガ試験機(株)社製]を用い、温度24℃、湿度60%RH、0.36W/平方メートル照度で168時間照射した。試験後の各試験片の反射濃度を上記測色システムにより測色し、色素残存率を(試験後の反射濃度/試験前の反射濃度)×100(%)で計算して求め、以下の3段階で評価した。
色素残存率が70%以上・・・・・・・・○
色素残存率が70%未満65%以上・・・△
色素残存率が65%未満・・・・・・・・×
結果を下記表4に示す。
各試験片を、オゾンウェザーメーター(スガ試験機社製)を用いてオゾン濃度10ppm、湿度60%RH、温度24℃の環境下に16時間放置した後、試験後の各試験片の反射濃度を上記の測色システムを用いて測色し、色素残存率を(試験後の反射濃度/試験前の反射濃度)×100(%)で計算して求め、以下の3段階で評価した。
色素残存率が85%以上・・・・・・・・○
色素残存率が85%未満80%以上・・・△
色素残存率が80%未満・・・・・・・・×
結果を下記表5に示す。
また、比較例2はキセノン耐光性及び耐オゾンガス性の両試験において、各実施例より劣る結果であった。
これに対し各実施例は、記録物の彩度、キセノン耐光性、及び耐オゾンガス性の全ての試験において、各比較例より優れた結果を示した。
Claims (13)
- 前記式(1)において、Qが塩素原子であり、xが3であり、yが1又は2である請求項1に記載の水溶性アゾ化合物又はその塩。
- 請求項1乃至4のいずれか一項に記載の水溶性アゾ化合物又はその塩を含有するインク組成物。
- 水溶性有機溶剤をさらに含有する請求項5に記載のインク組成物。
- インクジェット記録用である請求項5又は6に記載のインク組成物。
- 請求項5乃至7のいずれか一項に記載のインク組成物をインクとして用い、該インクのインク滴を記録信号に応じて吐出させて被記録材に付着させ、記録を行うインクジェット記録方法。
- 前記被記録材が情報伝達用シートである請求項8に記載のインクジェット記録方法。
- 前記情報伝達用シートが普通紙又は多孔性白色無機物を含むインク受容層を有するシートである請求項9に記載のインクジェット記録方法。
- (a)請求項1乃至4のいずれか一項に記載の水溶性アゾ化合物又はその塩、
(b)請求項1乃至4のいずれか一項に記載の水溶性アゾ化合物又はその塩を含有するインク組成物、又は、
(c)請求項1乃至4のいずれか一項に記載の水溶性アゾ化合物又はその塩及び水溶性有機溶剤を含有するインク組成物、のいずれかにより着色された着色体。 - 請求項8に記載のインクジェット記録方法により着色された着色体。
- 請求項5に記載のインク組成物を含む容器が装填されたインクジェットプリンタ。
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JP2011519721A JPWO2010146994A1 (ja) | 2009-06-17 | 2010-06-02 | 水溶性アゾ化合物又はその塩、インク組成物及び着色体 |
US13/377,937 US20120092400A1 (en) | 2009-06-17 | 2010-06-02 | Water-soluble azo compound or salt thereof, ink composition, and colored article |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2011122427A1 (ja) * | 2010-03-30 | 2011-10-06 | 日本化薬株式会社 | 水溶性アゾ化合物又はその塩、インク組成物及び着色体 |
WO2012053512A1 (ja) * | 2010-10-22 | 2012-04-26 | 日本化薬株式会社 | 水溶性アゾ化合物又はその塩、インク組成物及び着色体 |
WO2012090933A1 (ja) * | 2010-12-27 | 2012-07-05 | 日本化薬株式会社 | 水溶性アゾ化合物又はその塩、インク組成物及び着色体 |
JP2018127583A (ja) * | 2017-02-10 | 2018-08-16 | 日本化薬株式会社 | 水溶性アゾ化合物又はその塩、インク組成物及び着色体 |
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WO2010125903A1 (ja) * | 2009-04-28 | 2010-11-04 | 日本化薬株式会社 | 水溶性アゾ化合物又はその塩、インク組成物及び着色体 |
US8506697B2 (en) * | 2010-03-30 | 2013-08-13 | Nippon Kayaku Kabushiki Kaisha | Water-soluble azo compound or salt thereof, ink composition, and colored body |
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- 2010-06-02 JP JP2011519721A patent/JPWO2010146994A1/ja active Pending
- 2010-06-02 WO PCT/JP2010/059363 patent/WO2010146994A1/ja active Application Filing
- 2010-06-02 US US13/377,937 patent/US20120092400A1/en not_active Abandoned
- 2010-06-09 TW TW099118769A patent/TW201113334A/zh unknown
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JP2018127583A (ja) * | 2017-02-10 | 2018-08-16 | 日本化薬株式会社 | 水溶性アゾ化合物又はその塩、インク組成物及び着色体 |
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