WO2012002277A1 - インク組成物、インクジェット記録方法及び着色体 - Google Patents
インク組成物、インクジェット記録方法及び着色体 Download PDFInfo
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- WO2012002277A1 WO2012002277A1 PCT/JP2011/064543 JP2011064543W WO2012002277A1 WO 2012002277 A1 WO2012002277 A1 WO 2012002277A1 JP 2011064543 W JP2011064543 W JP 2011064543W WO 2012002277 A1 WO2012002277 A1 WO 2012002277A1
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- Prior art keywords
- group
- formula
- sulfo
- ink composition
- compound represented
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- 239000000203 mixture Substances 0.000 title claims abstract description 120
- 238000000034 method Methods 0.000 title claims description 64
- 239000000463 material Substances 0.000 title claims description 21
- 150000001875 compounds Chemical class 0.000 claims abstract description 176
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 claims abstract description 80
- 125000000229 (C1-C4)alkoxy group Chemical group 0.000 claims abstract description 56
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 49
- 150000003839 salts Chemical class 0.000 claims abstract description 29
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract description 23
- 125000005843 halogen group Chemical group 0.000 claims abstract description 17
- 125000001624 naphthyl group Chemical group 0.000 claims abstract description 9
- -1 Phospho group Chemical group 0.000 claims description 124
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 33
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims description 30
- 239000000049 pigment Substances 0.000 claims description 21
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 20
- 238000006467 substitution reaction Methods 0.000 claims description 19
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 15
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 9
- 125000000751 azo group Chemical group [*]N=N[*] 0.000 claims description 8
- 125000004442 acylamino group Chemical group 0.000 claims description 7
- 229910052801 chlorine Inorganic materials 0.000 claims description 7
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 125000003545 alkoxy group Chemical group 0.000 claims description 4
- 125000002252 acyl group Chemical group 0.000 claims description 3
- 125000004453 alkoxycarbonyl group Chemical group 0.000 claims description 3
- 125000004397 aminosulfonyl group Chemical group NS(=O)(=O)* 0.000 claims description 2
- 125000001951 carbamoylamino group Chemical group C(N)(=O)N* 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract description 27
- 239000007789 gas Substances 0.000 abstract description 27
- 238000001454 recorded image Methods 0.000 abstract description 12
- 230000015572 biosynthetic process Effects 0.000 abstract description 9
- 230000007935 neutral effect Effects 0.000 abstract description 9
- 239000000976 ink Substances 0.000 description 180
- 239000000975 dye Substances 0.000 description 82
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 55
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 45
- 235000002639 sodium chloride Nutrition 0.000 description 38
- 239000000243 solution Substances 0.000 description 36
- 238000006243 chemical reaction Methods 0.000 description 33
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 24
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 22
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 21
- 238000012360 testing method Methods 0.000 description 21
- 239000007787 solid Substances 0.000 description 20
- 238000007796 conventional method Methods 0.000 description 19
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 18
- 238000001914 filtration Methods 0.000 description 18
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 16
- 239000007864 aqueous solution Substances 0.000 description 16
- 239000003960 organic solvent Substances 0.000 description 14
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 14
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- 239000002585 base Substances 0.000 description 13
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- 230000002378 acidificating effect Effects 0.000 description 12
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 12
- 229910000029 sodium carbonate Inorganic materials 0.000 description 12
- 238000003786 synthesis reaction Methods 0.000 description 12
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 10
- 239000002609 medium Substances 0.000 description 10
- 125000001424 substituent group Chemical group 0.000 description 10
- 125000000217 alkyl group Chemical group 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 9
- 238000006482 condensation reaction Methods 0.000 description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 125000004432 carbon atom Chemical group C* 0.000 description 8
- 239000012295 chemical reaction liquid Substances 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000011780 sodium chloride Substances 0.000 description 8
- 238000003860 storage Methods 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 235000010288 sodium nitrite Nutrition 0.000 description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 229910052783 alkali metal Inorganic materials 0.000 description 6
- 238000004040 coloring Methods 0.000 description 6
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- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 6
- 159000000000 sodium salts Chemical class 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 description 5
- 150000003863 ammonium salts Chemical class 0.000 description 5
- MGNCLNQXLYJVJD-UHFFFAOYSA-N cyanuric chloride Chemical compound ClC1=NC(Cl)=NC(Cl)=N1 MGNCLNQXLYJVJD-UHFFFAOYSA-N 0.000 description 5
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- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 4
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- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- DMSMPAJRVJJAGA-UHFFFAOYSA-N benzo[d]isothiazol-3-one Chemical compound C1=CC=C2C(=O)NSC2=C1 DMSMPAJRVJJAGA-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 125000000524 functional group Chemical group 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 229910017053 inorganic salt Inorganic materials 0.000 description 4
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 235000010755 mineral Nutrition 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
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- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 3
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- QOXOZONBQWIKDA-UHFFFAOYSA-N 3-hydroxypropyl Chemical group [CH2]CCO QOXOZONBQWIKDA-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 3
- 0 CC(C=C1)=CC*C1N Chemical compound CC(C=C1)=CC*C1N 0.000 description 3
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 description 3
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 238000003916 acid precipitation Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 3
- 125000003806 alkyl carbonyl amino group Chemical group 0.000 description 3
- 125000004448 alkyl carbonyl group Chemical group 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 229940121375 antifungal agent Drugs 0.000 description 3
- 239000012736 aqueous medium Substances 0.000 description 3
- 229960003237 betaine Drugs 0.000 description 3
- 238000005562 fading Methods 0.000 description 3
- FPVGTPBMTFTMRT-NSKUCRDLSA-L fast yellow Chemical compound [Na+].[Na+].C1=C(S([O-])(=O)=O)C(N)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 FPVGTPBMTFTMRT-NSKUCRDLSA-L 0.000 description 3
- 235000011187 glycerol Nutrition 0.000 description 3
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- 239000007788 liquid Substances 0.000 description 3
- 238000001471 micro-filtration Methods 0.000 description 3
- 125000004433 nitrogen atom Chemical group N* 0.000 description 3
- 125000004430 oxygen atom Chemical group O* 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 description 3
- JEXVQSWXXUJEMA-UHFFFAOYSA-N pyrazol-3-one Chemical group O=C1C=CN=N1 JEXVQSWXXUJEMA-UHFFFAOYSA-N 0.000 description 3
- 125000001453 quaternary ammonium group Chemical group 0.000 description 3
- 125000001637 1-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C(*)=C([H])C([H])=C([H])C2=C1[H] 0.000 description 2
- 125000001622 2-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C(*)C([H])=C([H])C2=C1[H] 0.000 description 2
- JJYPMNFTHPTTDI-UHFFFAOYSA-N 3-methylaniline Chemical compound CC1=CC=CC(N)=C1 JJYPMNFTHPTTDI-UHFFFAOYSA-N 0.000 description 2
- GUUULVAMQJLDSY-UHFFFAOYSA-N 4,5-dihydro-1,2-thiazole Chemical compound C1CC=NS1 GUUULVAMQJLDSY-UHFFFAOYSA-N 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
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- GBWNQBBVSVGAAL-UHFFFAOYSA-N 5-aminobenzene-1,3-disulfonic acid Chemical compound NC1=CC(S(O)(=O)=O)=CC(S(O)(=O)=O)=C1 GBWNQBBVSVGAAL-UHFFFAOYSA-N 0.000 description 2
- DLFVBJFMPXGRIB-UHFFFAOYSA-N Acetamide Chemical compound CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
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- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
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- 239000006096 absorbing agent Substances 0.000 description 2
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 150000008041 alkali metal carbonates Chemical class 0.000 description 2
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- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 2
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 2
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- 230000000694 effects Effects 0.000 description 2
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- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
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- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 2
- 229910052808 lithium carbonate Inorganic materials 0.000 description 2
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- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
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- 125000001741 organic sulfur group Chemical group 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
- 229940083254 peripheral vasodilators imidazoline derivative Drugs 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920000259 polyoxyethylene lauryl ether Polymers 0.000 description 1
- 229920001451 polypropylene glycol 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
- 235000011056 potassium acetate Nutrition 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 125000001501 propionyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004673 propylcarbonyl group Chemical group 0.000 description 1
- 229960004063 propylene glycol Drugs 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- ILVXOBCQQYKLDS-UHFFFAOYSA-N pyridine N-oxide Chemical compound [O-][N+]1=CC=CC=C1 ILVXOBCQQYKLDS-UHFFFAOYSA-N 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 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
- 230000005855 radiation Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical class OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 1
- 125000005930 sec-butyloxycarbonyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(OC(*)=O)C([H])([H])[H] 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 235000019259 sodium dehydroacetate Nutrition 0.000 description 1
- 229940079839 sodium dehydroacetate Drugs 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
- 235000010267 sodium hydrogen sulphite Nutrition 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
- 239000001488 sodium phosphate Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 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
- DSOWAKKSGYUMTF-GZOLSCHFSA-M sodium;(1e)-1-(6-methyl-2,4-dioxopyran-3-ylidene)ethanolate Chemical compound [Na+].C\C([O-])=C1/C(=O)OC(C)=CC1=O DSOWAKKSGYUMTF-GZOLSCHFSA-M 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
- 239000002904 solvent Substances 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
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 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
- 238000006277 sulfonation reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 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
- 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
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 description 1
- 150000004072 triols Chemical class 0.000 description 1
- JSPLKZUTYZBBKA-UHFFFAOYSA-N trioxidane Chemical class OOO JSPLKZUTYZBBKA-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 239000001043 yellow dye Substances 0.000 description 1
- 239000004711 α-olefin Substances 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
- 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
-
- 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, clays
-
- 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
- C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
- C09B31/16—Trisazo dyes
- C09B31/26—Trisazo dyes from other coupling components "D"
- C09B31/28—Heterocyclic compounds
-
- 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
- C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
- C09B31/30—Other polyazo dyes
-
- 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
- C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
- C09B35/50—Tetrazo dyes
- C09B35/56—Tetrazo dyes of the type
-
- 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
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0033—Blends of pigments; Mixtured crystals; Solid solutions
- C09B67/0046—Mixtures of two or more azo dyes
- C09B67/0055—Mixtures of two or more disazo dyes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
Definitions
- the present invention relates to an ink composition containing three specific types of coloring matter, an ink jet recording method using the ink composition, and a colored body colored with the ink composition.
- a recording method using an inkjet printer which is one of the representative methods among various color recording methods, generates ink droplets and attaches them to various recording materials (paper, film, fabric, etc.) for recording. Is what you do.
- This method is quiet because it does not generate sound because the recording head and the recording material are not in direct contact.
- water-based inks in which water-soluble pigments are dissolved in an aqueous medium have been used as inks for fountain pens, felt pens, and the like and inks for ink-jet recording.
- a water-soluble organic solvent is generally added to prevent clogging of the ink at the pen tip or the ink discharge nozzle.
- These inks provide a recorded image with sufficient density, do not cause clogging of the pen tip and nozzles, have good drying properties on recording materials, have little bleeding, and have storage stability. It is required to be excellent.
- the water-soluble dye used is required to have particularly high solubility in water and high solubility in the water-soluble organic solvent added to the ink.
- the formed image is required to have image fastness such as water resistance, light resistance, gas resistance and moisture resistance.
- the gas resistance is resistance to a phenomenon in which ozone gas having an oxidizing action existing in the air acts on the dye in the recording paper and discolors the printed image.
- examples of the oxidizing gas having this kind of action include NOx, SOx, etc.
- ozone gas is a main causative substance that further promotes the discoloration and discoloration phenomenon of inkjet recording images. It is said that. For this reason, ozone gas resistance tends to be regarded as the most important among gas resistances.
- a material such as a porous white inorganic material is often used for the ink receiving layer provided on the surface of the photographic image-dedicated inkjet paper for the purpose of accelerating ink drying and reducing bleeding at high image quality.
- the discoloration due to ozone gas is noticeable. Since the discoloration phenomenon due to the oxidizing gas is characteristic of ink jet images, the improvement of ozone gas resistance is one of the most important issues in the ink jet recording method.
- the ink composition used for inkjet recording and the colored bodies colored thereby will be light-resistant, ozone-gas resistant, moisture-resistant, water-resistant. There is a strong demand for further improvement.
- Ink of various hues is prepared from various pigments, and among them, black ink is an important ink used for both monocolor and full-color images.
- black ink is an important ink used for both monocolor and full-color images.
- a black ink is prepared by blending a plurality of various pigments.
- the hue varies depending on the media (recording material), and 2) decomposition of the dye by light or ozone gas.
- discoloration becomes large.
- Patent Documents 1, 2, 3 and the like have been proposed as black ink compositions for inkjet having various durability of printed materials.
- This ink composition has good image fastness of printed matter and is a greatly improved ink composition.
- Patent Documents 4 and 5 disclose a method for obtaining a black ink composition by blending various inks.
- ink compositions satisfying high fastness and color development satisfying market demand are disclosed. Not.
- JP 2009-84346 A International Publication No. 2009/069279 International Publication No. 2005/097912 International Publication No. 2007/077931 Special table 2009-512737
- An object of the present invention is to provide a water-based black ink composition that provides an excellent black recorded image that has extremely high ozone gas resistance and is neutral and achromatic.
- the present inventors have obtained a compound represented by the formula (1) or a tautomer thereof or a salt thereof as the dye (I), A compound represented by the specific formula (3) or a tautomer thereof or a salt thereof as (II), and a compound or a salt thereof represented by the specific formula (4) as the dye (III)
- the present inventors have found that an ink composition containing each type can solve the above-mentioned problems, and completed the present invention.
- the present invention is 1) As the dye (I), at least one compound represented by the following formula (1) or a tautomer thereof, or a salt thereof, and the dye (II) represented by at least one kind of the following formula (3) Or a salt thereof, and at least one compound represented by the following formula (4) or a salt thereof as the dye (III): object, [In Formula (1), R 1 and R 2 are each independently a hydrogen atom; a halogen atom; a cyano group; a carboxy group; a sulfo group; a sulfamoyl group; an N-alkylaminosulfonyl group; an N, N-dialkylaminosulfonyl group; Phospho group; nitro group; acyl group; ureido group; C1-C4 alkyl group; C1-C4 alkyl group substituted by hydroxy group or C1-C4 alkoxy group; C1-C4 alkoxy group; hydroxy group, C1
- R 5 represents a cyano group; a carboxy group; a C1-C4 alkyl group; a C1-C4 alkoxycarbonyl group; or a phenyl group
- R 6 , R 7 , and R 8 are each independently a hydrogen atom; a halogen atom; a cyano group; a carboxy group; a sulfo group; a nitro group; a C1-C4 alkyl group; a C1-C4 alkoxy group; A C1-C4 alkoxy group substituted with at least one group selected from the group consisting of a C4 alkoxy group and a sulfo group; or an acylamino group.
- R 101 to R 103 each independently represents a hydrogen atom; a sulfo group; or a C1-C4 alkoxy group;
- the group D represents a phenyl group or a naphthyl group substituted with 1 to 3 sulfo groups.
- R 201 to R 204 each independently represents a hydrogen atom; or a C1-C4 alkoxy group substituted with a sulfo group.
- the substitution position of the nitro group is the 4-position with the substitution position of the azo group on the benzene ring substituted by the nitro group as the first position
- the substitution position of the group A is the 4-position with the substitution position of the azo group on the benzene ring substituted by the group A as the 1-position
- n is 1, R 1 , R 3 , and R 7 are sulfo groups
- R 2 is a hydrogen atom
- R 4 is a hydrogen atom, a chlorine atom, or a sulfo group
- m is 1, R 101 is a hydrogen atom or a sulfo group, R 102 is a C1-C4 alkoxy group, R 103 is a hydrogen atom or a sulfo group,
- the ratio of the dye (I) is 10 to 80% by mass
- the ratio of the dye (II) is 10 to 80% by mass
- the dye (III) The ink composition according to any one of 1) to 4) above, wherein the ratio is from 10 to 40% by mass
- the ink composition of the present invention is an ink composition containing a dye (I), a dye (II), and a dye (III) represented by a specific formula.
- the dye (I) contained in the ink composition of the present invention will be described.
- the coloring matter (I) contained in the ink composition of the present invention is a compound represented by the above formula (1).
- the dye (I) is composed of at least one compound represented by the formula (1), and may be a dye composed of a single compound represented by the formula (1), or a mixture of dyes composed of a plurality of compounds. It may be.
- the compound represented by Formula (1) is a water-soluble dye.
- examples of the halogen atom in R 1 and R 2 include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- a fluorine atom, a chlorine atom, and a bromine atom are preferable, and a chlorine atom is more preferable.
- examples of the N-alkylaminosulfonyl group in R 1 and R 2 include linear or branched ones, and linear ones are preferred. Specific examples include N-C1-C4 alkylaminosulfonyl groups such as N-methylaminosulfonyl group, N-ethylaminosulfonyl group, N- (n-butyl) aminosulfonyl group and the like.
- the N, N-dialkylaminosulfonyl group includes N, N-diC1-C4 alkylaminosulfonyl groups such as N, N-dimethylaminosulfonyl group and N, N-di (n-propyl) aminosulfonyl group; Etc.
- examples of the acyl group in R 1 and R 2 include an alkylcarbonyl group and an arylcarbonyl group.
- alkylcarbonyl group include straight-chain or branched alkyl groups, usually C1-C6 alkylcarbonyl groups, preferably C1-C4 alkylcarbonyl groups, and straight-chain groups are preferred.
- Specific examples include straight-chain compounds such as acetyl (methylcarbonyl), propionyl (ethylcarbonyl), butyryl (propylcarbonyl); branched-chain compounds such as isobutyryl (isopropylcarbonyl); and the like.
- the arylcarbonyl group include those having an aryl moiety with C6-C10, and specific examples include benzoyl, naphthoyl and the like.
- examples of the C1-C4 alkyl group for R 1 and R 2 include straight-chain or branched-chain groups, and straight-chain groups are preferred. Specific examples include straight chain such as methyl, ethyl, n-propyl and n-butyl; branched chain such as isopropyl, isobutyl, sec-butyl and t-butyl; Of these, methyl is particularly preferred.
- any carbon atoms of the C1-C4 alkyl group in R 1 and R 2 And those substituted with a hydroxy group or a C1-C4 alkoxy group.
- alkyl moiety include a straight chain or branched chain, and a straight chain is preferable.
- hydroxy C1-C4 alkyl groups such as 2-hydroxyethyl, 2-hydroxypropyl, 3-hydroxypropyl; methoxyethyl, 2-ethoxyethyl, n-propoxyethyl, isopropoxyethyl, n-butoxyethyl, And C1-C4 alkoxy C1-C4 alkyl groups such as methoxypropyl, ethoxypropyl, n-propoxypropyl, isopropoxybutyl, n-propoxybutyl and the like.
- examples of the C1-C4 alkoxy group in R 1 and R 2 include straight-chain or branched-chain groups, and straight-chain groups are preferred. Specific examples include straight chain such as methoxy, ethoxy, n-propoxy and n-butoxy; branched chain such as isopropoxy, isobutoxy, sec-butoxy and t-butoxy; Of these, methoxy is particularly preferred.
- examples thereof include those in which any carbon atom of the C1-C4 alkoxy group in R 1 and R 2 is substituted with these groups.
- the position of the substituent is not particularly limited, but preferably the same carbon atom is not substituted with two or more oxygen atoms.
- Specific examples include 2-hydroxyethoxy, 2-hydroxypropoxy, 3-hydroxypropoxy and the like substituted with a hydroxy group; methoxyethoxy, ethoxyethoxy, n-propoxyethoxy, isopropoxyethoxy, n-butoxyethoxy, methoxy
- C1-C4 alkoxy groups such as propoxy, ethoxypropoxy, n-propoxypropoxy, isopropoxybutoxy, n-propoxybutoxy
- sulfo groups such as 2-sulfoethoxy, 3-sulfopropoxy, 4-sulfobutoxy
- carboxy group such as carboxymethoxy, 2-carboxyethoxy, 3-carboxypropoxy, etc.
- a C1-C4 alkoxy group substituted with a sulfo group is preferable.
- examples of the acylamino group in R 1 and R 2 include an alkylcarbonylamino group and an arylcarbonylamino group.
- the alkylcarbonylamino group includes a linear or branched alkyl group, usually a C1-C6 alkylcarbonylamino group, preferably a C1-C4 alkylcarbonylamino group, and a linear one is preferable.
- alkyl moieties such as acetylamino (methylcarbonylamino), propionylamino (ethylcarbonylamino), butyrylamino (propylcarbonylamino), etc .; alkyl moieties such as isobutyrylamino (isopropylcarbonylamino) Is branched chain; and the like.
- alkyl moieties such as acetylamino (methylcarbonylamino), propionylamino (ethylcarbonylamino), butyrylamino (propylcarbonylamino), etc .
- alkyl moieties such as isobutyrylamino (isopropylcarbonylamino) Is branched chain; and the like.
- arylcarbonylamino group include those having a C6-C10 carbon atom in the aryl moiety, and specific examples include benzoylamino, naphthoylamino and the
- R 1 and R 2 in the above formula (1) are preferably a hydrogen atom, a carboxy group, a sulfo group, a C1-C4 alkoxy group, or a C1-C4 alkoxy group substituted with a sulfo group. More preferably, either one is a hydrogen atom and the other is a group other than a hydrogen atom; or one is a sulfo group and the other is a C1-C4 alkoxy group substituted with a sulfo group; the former is more preferable.
- the substitution positions of the nitro group, R 1 and R 2 substituted on the same benzene ring are not particularly limited.
- Preferable examples include the following combinations (a) to (d) with the substitution position of the azo group substituted on the benzene ring as the 1-position, and the combination (a) is particularly preferable.
- C) The nitro group is in position 2, R 1 is in position 4, and R 2 is in position 6.
- the nitro group is in position 3, R 1 is in position 2, and R 2 is in position 5.
- examples of the halogen atom in R 3 and R 4 include the same ones as described in the above “halogen atom in R 1 and R 2 ”, including preferable ones.
- the C1-C4 alkyl group in R 3 and R 4 is the same as described above in the “C1-C4 alkyl group in R 1 and R 2 ”, including preferable ones. Can be mentioned.
- the C1-C4 alkoxy group in R 3 and R 4 is the same as those described in the above “C1-C4 alkoxy group in R 1 and R 2 ”, including preferable ones. Can be mentioned.
- C1-C4 alkoxy group substituted with at least one group selected from the group consisting of a hydroxy group, a C1-C4 alkoxy group, a sulfo group, and a carboxy group in R 1 and R 2 The same thing as what is described and a preferable thing etc. are mentioned.
- R 3 and R 4 in the above formula (1) are preferably a hydrogen atom, a halogen atom, a carboxy group, a sulfo group, a nitro group, a C1-C4 alkyl group, or a C1-C4 alkoxy group. More preferably, any one is a hydrogen atom, a halogen atom, a carboxy group, a sulfo group, a nitro group, a C1-C4 alkyl group, or a C1-C4 alkoxy group, and the other is a carboxy group or a sulfo group. It is done.
- one of which is a hydrogen atom, a halogen atom, a carboxy group, a sulfo group, a nitro group, a C1-C4 alkyl group, or a C1-C4 alkoxy group and the other is a sulfo group.
- Particularly preferred is one in which either one is a chlorine atom and the other is a sulfo group.
- substitution positions of R 3 , R 4 and group A substituted on the same benzene ring are not particularly limited. Preferred examples include the following combinations (e) to (h) with the substitution position of the azo group substituted on the benzene ring as the 1-position, and the combination (e) is particularly preferable.
- E One of R 3 and R 4 is the 3rd position, the other is the 5th position, and the group A is the 4th position.
- One of R 3 and R 4 is the 2nd position, the other is the 5th position, and the group A is the 4th position.
- One of R 3 and R 4 is the 2nd position, the other is the 4th position, and the group A is the 5th position.
- One of R 3 and R 4 is the 3rd position, the other is the 4th position, and the group A is the 5th position.
- the group A is a group represented by the above formula (2).
- examples of the C1-C4 alkyl group for R 5 include the same ones as described above for “C1-C4 alkyl group for R 1 and R 2 ”, including preferable ones.
- examples of the C1-C4 alkoxycarbonyl group for R 5 include linear or branched ones, and linear ones are preferred. Specific examples include linear chains such as methoxycarbonyl, ethoxycarbonyl, n-propoxycarbonyl, and n-butoxycarbonyl; branched chains such as isopropoxycarbonyl, isobutoxycarbonyl, sec-butoxycarbonyl, and t-butoxycarbonyl. And the like.
- R 5 in Formula (2) is preferably a cyano group, a carboxy group, a C1-C4 alkyl group, or a phenyl group, more preferably a cyano group or a carboxy group, and even more preferably a carboxy group.
- examples of the halogen atom in R 6 , R 7 , and R 8 include the same ones as described in the above-mentioned “halogen atom in R 1 and R 2 ”, including preferable ones. .
- the C1-C4 alkyl group in R 6 , R 7 , and R 8 includes those described in the above-mentioned “C1-C4 alkyl group in R 1 and R 2 ”, preferable ones, and the like. Are the same.
- the C1-C4 alkoxy group in R 6 , R 7 , and R 8 includes those described in the above “C1-C4 alkoxy group in R 1 and R 2 ”, preferable ones, and the like. Are the same.
- the group include those in which these groups are substituted on any carbon atom of the C1-C4 alkoxy group in the above R 6 , R 7 , and R 8 .
- the position of the substituent is not particularly limited, but preferably the same carbon atom is not substituted with two or more oxygen atoms.
- hydroxy C1-C4 alkoxy groups such as 2-hydroxyethoxy, 2-hydroxypropoxy, 3-hydroxypropoxy; methoxyethoxy, ethoxyethoxy, n-propoxyethoxy, isopropoxyethoxy, n-butoxyethoxy, methoxy C1-C4 alkoxy C1-C4 alkoxy groups such as propoxy, ethoxypropoxy, n-propoxypropoxy, isopropoxybutoxy, n-propoxybutoxy; sulfo C1-C4 alkoxy groups such as 3-sulfopropoxy, 4-sulfobutoxy; Etc.
- examples of the acylamino group in R 6 , R 7 , and R 8 include the same as those described in the above-mentioned “acylamino group in R 1 and R 2 ”, including preferable ones. .
- R 6 , R 7 , and R 8 in the above formula (2) are preferably a hydrogen atom, a halogen atom, a carboxy group, a sulfo group, a C1-C4 alkyl group, or a C1-C4 alkoxy group. More preferably, any one is a hydrogen atom and the remaining is any two selected from a halogen atom, a carboxy group, and a sulfo group; or any two are hydrogen atoms and the remaining one is a sulfo atom. In which any two of them are hydrogen atoms and the remaining one is a sulfo group.
- the substitution positions of R 6 , R 7 and R 8 substituted on the same benzene ring are not particularly limited.
- the following combinations (i) to (k) are exemplified with the substitution position of the nitrogen atom (of the pyrazolone ring) substituted on the benzene ring as the 1-position.
- (I) When all three are other than hydrogen atoms, the 2nd, 4th and 5th positions; or the 2nd, 4th and 6th positions.
- J When two are groups other than a hydrogen atom and one is a hydrogen atom, groups other than a hydrogen atom are in the 2nd and 4th positions; the 2nd and 5th positions; or the 3rd and 5th positions.
- the group other than a hydrogen atom is 4-position.
- the substitution position of the nitro group is the 4-position with the substitution position of the azo group on the benzene ring substituted by the nitro group being the 1-position
- the substitution position of the group A is The substitution position of the azo group on the benzene ring substituted by the group A is 4-position
- n is 1
- R 1 , R 3 , and R 7 are sulfo groups
- R 2 is a hydrogen atom
- R 4 is a hydrogen atom, a chlorine atom, or a sulfo group
- R 5 is a carboxy group.
- the pigment (II) contained in the ink composition of the present invention will be described.
- the pigment (II) contained in the ink composition of the present invention is a compound represented by the above formula (3).
- the dye (II) is composed of at least one compound represented by the formula (3), and may be a dye composed of a single compound represented by the formula (3), or a mixture of dyes composed of a plurality of compounds. It may be.
- the compound represented by Formula (3) is a water-soluble dye.
- the compound represented by the above formula (3) has a tautomer, and other than the formula (3), isomers represented by the following formulas (5) to (7) and the like can be considered. These tautomers are also included in the present invention.
- R 101 to R 103 all have the same meaning as in the above formula (3).
- m is 0 or 1
- R 101 to R 103 each independently represents a hydrogen atom; a sulfo group; or a C1-C4 alkoxy group.
- R 101 to R 103 in the above formula (3) is a combination in which R 101 is a sulfo group, R 102 is a C1-C4 alkoxy group, and R 103 is a hydrogen atom; or R 101 is a hydrogen atom, R A combination in which 102 is a C1-C4 alkoxy group and R 103 is a sulfo group.
- m is preferably 1.
- the group D is a phenyl group or a naphthyl group substituted with 1 to 3 sulfo groups.
- the number of sulfo groups is 1 to 3, preferably 1 or 2.
- the position of the substituent is not particularly limited. However, when the number of substituents is 3 when the bonding position with the nitrogen atom of the pyrazolone ring is 1, the 2-position, 3-position, and 5 It is preferable to substitute at the position: 2-position and 4-position when the number of substituents is 2, or 3-position and 5-position; 4-position when the number of substituents is 1, respectively.
- Specific examples include 2-sulfophenyl, 4-sulfophenyl, 2,4-disulfophenyl, 3,5-disulfophenyl, and the like. Particularly preferred are 4-sulfophenyl and 3,5-disulfophenyl.
- the number of sulfo groups is 1 to 3.
- the bonding position between the nitrogen atom of the pyrazolone ring and the group D is preferably the 1- or 2-position, that is, 1-naphthyl or 2-naphthyl.
- the position of the sulfo group on the naphthyl group is not particularly limited, but the following are preferable. That is, [When group D is 1-naphthyl group] (L) When the number of sulfo groups is 1, it is 3, 4, 5, 6, 7 position.
- the compound which combined the preferable thing described about the substituent of the said Formula (3) is more preferable, and the compound which combined more preferable things is further more preferable.
- m is 1
- R 101 is a hydrogen atom or a sulfo group
- R 102 is a C1-C4 alkoxy group
- R 103 is a hydrogen atom or a sulfo group.
- a group D is any one of a phenyl group substituted with one or two sulfo groups and a naphthyl group substituted with three sulfo groups.
- the pigment (III) contained in the ink composition of the present invention will be described.
- the pigment (III) contained in the ink composition of the present invention is a compound represented by the above formula (4).
- the dye (III) is composed of at least one compound represented by the formula (4), and may be a dye composed of a single compound represented by the formula (4), or a mixture of dyes composed of a plurality of compounds. It may be.
- the compound represented by Formula (4) is a water-soluble dye.
- R 201 to R 204 each independently represents a hydrogen atom; or a C1-C4 alkoxy group substituted with a sulfo group.
- Examples of the C1-C4 alkoxy group substituted with a sulfo group include those having a sulfo group at any carbon atom in the C1-C4 alkoxy group.
- the number of the substituents is usually 1 or 2, preferably 1.
- the position of the substituent is not particularly limited, but preferably the same carbon atom is not substituted with two or more oxygen atoms.
- Specific examples include sulfo C1-C4 alkoxy groups such as 2-sulfoethoxy, 3-sulfopropoxy, 4-sulfobutoxy and the like. 3-sulfopropoxy is particularly preferred.
- At least one of R 201 and R 202 is a sulfopropoxy group, and at least one of R 203 and R 204 is a sulfopropoxy group.
- the ratio of the dye (I) is 10 to 80% by mass
- the ratio of the dye (II) is 10 to 80% by mass
- the ratio of the dye (III) is It is preferable to mix at a blending ratio of 10 to 40% by mass. More preferably, the mixing ratio is such that the ratio of the dye (I) is 20 to 70% by mass, the ratio of the dye (II) is 20 to 70% by mass, and the ratio of the dye (III) is 10 to 40% by mass. .
- the salt of the compound represented by the above formula (1), formula (3) or formula (4) or a tautomer thereof is a salt with an inorganic or organic cation.
- inorganic salts include alkali metal salts, alkaline earth metal salts, and ammonium salts.
- Preferred inorganic salts include lithium, sodium, potassium salts, and ammonium salts.
- organic cation salt include salts with quaternary ammonium represented by the following formula (8), but are not limited thereto.
- the free acid, its tautomer, and various salts thereof may be a mixture.
- any combination such as a mixture of sodium salt and ammonium salt, a mixture of free acid and sodium salt, a mixture of lithium salt, sodium salt, and ammonium salt may be used.
- the physical properties such as solubility in each compound may differ, and if necessary, select the type of salt as appropriate, or change the ratio if it contains multiple salts, etc.
- a mixture having physical properties suitable for the purpose can be obtained.
- Z 1 , Z 2 , Z 3 , and Z 4 each independently represent a group selected from the group consisting of a hydrogen atom, an alkyl group, a hydroxyalkyl group, and a hydroxyalkoxyalkyl group, Any one represents a group other than a hydrogen atom.
- Specific examples of the alkyl group of Z 1 , Z 2 , Z 3 and Z 4 in the formula (8) include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, t-butyl and the like. Can be mentioned.
- hydroxyalkyl group examples include hydroxy C1-C4 alkyl groups such as hydroxymethyl, hydroxyethyl, 3-hydroxypropyl, 2-hydroxypropyl, 4-hydroxybutyl, 3-hydroxybutyl, 2-hydroxybutyl and the like.
- hydroxyalkoxyalkyl groups include hydroxyethoxymethyl, 2-hydroxyethoxyethyl, 3-hydroxyethoxypropyl, 2-hydroxyethoxypropyl, 4-hydroxyethoxybutyl, 3-hydroxyethoxybutyl, 2-hydroxyethoxybutyl, etc.
- a hydrogen atom methyl; hydroxy C1-C4 alkyl group such as hydroxymethyl, hydroxyethyl, 3-hydroxypropyl, 2-hydroxypropyl, 4-hydroxybutyl, 3-hydroxybutyl, 2-hydroxybutyl; And hydroxyethoxy C1-C4 alkyl groups such as hydroxyethoxymethyl, 2-hydroxyethoxyethyl, 3-hydroxyethoxypropyl, 2-hydroxyethoxypropyl, 4-hydroxyethoxybutyl, 3-hydroxyethoxybutyl, 2-hydroxyethoxybutyl, etc. It is done.
- a compound represented by the above formula (1) can be obtained by a person skilled in the art by appropriately selecting a synthetic raw material according to the method described in International Publication No. 2005/097912 or the method described in the publication. It can be easily synthesized.
- the compound represented by the above formula (3) can be obtained by a person skilled in the art by appropriately selecting a synthetic raw material according to the method described in JP-A-2009-84346 or the method described in the publication. It can be easily synthesized.
- the compound represented by the above formula (4) can be synthesized, for example, by the following method.
- the structural formula of the compound in each step shall be expressed in the form of a free acid, and R 201 to R 204 used appropriately in the following formulas (9) to (25) are the same as those in formula (4), respectively. Represents meaning.
- a compound represented by the following formula (9) is diazotized by a conventional method, and this and a compound represented by the following formula (10) are subjected to a coupling reaction by a conventional method, and represented by the following formula (11).
- a compound is obtained.
- the following method is mentioned as another synthesis method of the compound represented by Formula (11). That is, a compound represented by the following formula (9) is diazotized by a conventional method, and this is coupled with a methyl- ⁇ -sulfonic acid derivative of aniline by a conventional method, followed by hydrolysis under alkaline conditions. A compound represented by the following formula (12) is obtained.
- the compound represented by the formula (11) can be obtained by treating the resulting compound represented by the formula (12) with fuming sulfuric acid or the like for sulfonation. Further, some of the compounds represented by the formula (11) can be purchased as commercial products (for example, CI Acid Yellow 9).
- the diazotization of the compound represented by the above formula (9) is carried out by a method known per se.
- a nitrite for example an alkali metal nitrite such as sodium nitrite
- an inorganic acid medium for example at a temperature of ⁇ 5 to 30 ° C., preferably 0 to 20 ° C.
- a coupling reaction between the diazotized compound of the compound represented by the formula (9) and the compound represented by the formula (10) is also carried out under reaction conditions known per se.
- the reaction liquid is preferably adjusted to the above pH value by adding a base.
- the base include alkali metal hydroxides such as lithium hydroxide and sodium hydroxide; alkali metal carbonates such as lithium carbonate, sodium carbonate and potassium carbonate; acetates such as sodium acetate; ammonia or organic amines; Can be used.
- the compound represented by formula (9) and the compound represented by formula (10) are used in approximately stoichiometric amounts.
- the diazotization of the compound represented by the above formula (11) is carried out by a method known per se.
- a nitrite for example an alkali metal nitrite such as sodium nitrite
- an inorganic acid medium for example at a temperature of ⁇ 5 to 30 ° C., preferably 0 to 25 ° C.
- a coupling reaction between a diazotized compound of the compound represented by the formula (11) and the compound represented by the formula (13), the formula (15), the formula (17), or the formula (19) is also known per se. Carried out under reaction conditions.
- the reaction liquid is preferably adjusted to the above pH value by adding a base.
- the same base as described above can be used.
- the compound of formula (11) and the compound of formula (13), formula (15), formula (17), or formula (19) are used in approximately stoichiometric amounts.
- the condensation reaction between the compound represented by the above formula (14) or the above formula (18) and cyanuric halide such as cyanuric chloride is carried out by a method known per se.
- cyanuric halide such as cyanuric chloride
- the compound represented by the above formula (14) or the above formula (18) and the cyanuric halide are used in a substantially stoichiometric amount.
- the condensation reaction is carried out by a method known per se. For example, it is advantageous to carry out the reaction in water or an aqueous organic medium at a temperature of 10 to 80 ° C., preferably 25 to 70 ° C., and at a weakly acidic to weakly alkaline pH value, for example pH 5-9.
- the pH value is adjusted by adding a base.
- the same base as described above can be used.
- the compound represented by the above formula (16) and the compound represented by the above formula (21), or the compound represented by the above formula (20) and the compound represented by the above formula (23) are substantially stoichiometric. Use in theory.
- the condensation reaction of the compound represented by the above formula (22), the compound represented by the above formula (24) and the compound represented by the above formula (25) is carried out by a method known per se.
- a method known per se for example, it is advantageous to carry out in water or an aqueous organic medium at a temperature of 50 to 100 ° C., preferably 60 to 95 ° C., and at a neutral to weakly alkaline pH value, for example pH 7 to 10.
- the pH value is adjusted by adding a base.
- the same base as described above can be used.
- the compound represented by the above formula (25) is 0.4 to 0.6 equivalent, preferably 1 equivalent of the compound represented by the above formula (22) and 1 equivalent of the compound represented by the above formula (24). 0.5 equivalents are used.
- the desired inorganic salt or organic cation is obtained after the final step of the synthesis reaction of each compound is completed.
- a solid or solution of the corresponding salt can be obtained by a method of neutralizing with a desired inorganic or organic base in an aqueous medium;
- acidic water refers to water obtained by dissolving a mineral acid such as sulfuric acid or hydrochloric acid or an organic acid such as acetic acid in water.
- Examples of the aqueous organic medium include an organic substance miscible with water, or a so-called organic solvent miscible with water (specific examples include a water-soluble organic solvent described later) and water.
- Examples of the inorganic salt include alkali metal salts such as lithium chloride, sodium chloride and potassium chloride; ammonium salts such as ammonium chloride and ammonium bromide;
- Examples of the organic cation salt include a halogen salt of quaternary ammonium represented by the above formula (8).
- inorganic bases include, for example, alkali metal hydroxides such as lithium hydroxide, sodium hydroxide, and potassium hydroxide; ammonium hydroxide (ammonia water); alkali metal carbonates such as lithium carbonate, sodium carbonate, and potassium carbonate. Salt; and the like.
- organic base include organic amines such as diethanolamine and triethanolamine; quaternary ammonium hydroxides and halides represented by the above formula (8); but are not limited thereto. Absent.
- each reaction solution after completion of the final step is directly used for production of the ink composition of the present invention.
- a method of individually drying for example, spray-drying the reaction solution containing each pigment; a method of salting out by adding inorganic salts such as sodium chloride, potassium chloride, calcium chloride, sodium sulfate; hydrochloric acid, sulfuric acid, nitric acid
- a method of acid precipitation by adding a mineral acid such as; a method of acid precipitation by combining salting-out and acid precipitation; etc., and isolating each compound and mixing them to prepare an ink composition it can.
- Preferred dyes as the dye (I) contained in the ink composition of the present invention are the compounds mentioned as preferred in each compound represented by the above formula (1), and the same applies to more preferred dyes and the like.
- preferred dyes as the dye (II) are also the compounds mentioned as preferred in the compound represented by the formula (3), and the same applies to more preferred dyes and the like.
- a preferable dye as the dye (III) is also a compound exemplified as a preferable compound in the compound represented by the above formula (4), and the same applies to more preferable dyes.
- No. 1 described in Table 4 as the dye (I) is used.
- No. 25 described in Table 5 as the compound represented by No. 25 and the dye (II).
- 28 or No. No. 29. a compound represented by Table 29.
- 32 or Table 6 No. 33 of the compound represented by Table 33 and Table 7.
- the combination of the compound represented by 45 is mentioned.
- the ink composition of the present invention containing this combination of dyes is one of the preferred ink compositions of the present invention.
- the ink composition of the present invention contains dye (I), dye (II), and dye (III) as the dye.
- Each of the dyes (I), (II), and (III) may be a single dye or a mixture of a plurality of dyes as long as the above-described specific conditions are satisfied. Therefore, the ink composition of the present invention is one in which at least three kinds of pigments are blended.
- the ratio of the dye (I) in the total weight of the dye contained in the ink composition of the present invention is 10 to 80% by weight, preferably 20 to 70% by weight, more preferably 20 to 65% by weight, and the dye (II).
- the total content of the dye (I), the dye (II), and the dye (III) in the total mass of the ink composition of the present invention is usually 0.1 to 20 mass with respect to the total mass of the ink composition. %, Preferably 1 to 10% by mass, more preferably 2 to 8% by mass.
- the ink composition of the present invention may further contain, for example, 0 to 30% by mass of a water-soluble organic solvent, for example, 0 to 20% by mass of an ink preparation agent, and the balance is water.
- the ink composition of the present invention is prepared using water as a medium, and may contain a water-soluble organic solvent as necessary within a range that does not impair the effects of the present invention.
- the water-soluble organic solvent is used for the purpose of dissolving the dye in the ink composition of the present invention, preventing drying (maintaining a wet state), adjusting the viscosity, promoting penetration, adjusting the surface tension, and defoaming.
- the ink composition of the present invention is preferably contained.
- the ink preparation agent include antifungal preservatives, pH adjusters, chelating reagents, rust inhibitors, ultraviolet absorbers, water-soluble polymer compounds, dye solubilizers, surfactants, antioxidants (fading inhibitors).
- the content of the water-soluble organic solvent is 0 to 60% by mass, preferably 10 to 50% by mass with respect to the total mass of the ink composition of the present invention, and the ink preparation agent is similarly 0 to 20% by mass, preferably Is preferably used in an amount of 0 to 15% by mass.
- the remainder other than the above is water.
- the pH of the ink composition of the present invention is preferably pH 5 to 11 and more preferably pH 7 to 10 for the purpose of improving storage stability.
- the surface tension of the ink composition is preferably 25 to 70 mN / m, more preferably 25 to 60 mN / m.
- the viscosity of the ink composition is preferably 30 mPa ⁇ s or less, and more preferably 20 mPa ⁇ s or less.
- the pH and surface tension of the ink composition of the present invention can be appropriately adjusted with a pH adjusting agent and a surfactant as described later.
- each dye contained in the ink composition of the present invention [that is, each of the above formulas (1), (3), and (4)
- a metal cation chloride for example, sodium chloride
- sulfate for example, sodium sulfate
- the standard of the inorganic impurity content is about 1% by mass or less with respect to the total mass of the dye, and the lower limit may be the detection limit of the analytical instrument or less, that is, 0%.
- a conventional method using a reverse osmosis membrane a dried pigment product or a wet cake is stirred in a mixed solvent of C1-C4 alcohol such as methanol and water, and the precipitate is separated by filtration Then, it may be desalted by a method such as drying; a method using an ion exchange resin;
- water-soluble organic solvent examples include C1-C4 alkanols such as methanol, ethanol, propanol, isopropanol, butanol, isobutanol, sec-butanol and tert-butanol; N, N-dimethylformamide, N, N-dimethyl Carboxylic acid amides such as acetamide; lactams such as 2-pyrrolidone, N-methyl-2-pyrrolidone and N-methylpyrrolidin-2-one; 1,3-dimethylimidazolidin-2-one, 1,3-dimethylhexahydro Cyclic ureas such as pyrimido-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 -Propylene glycol
- 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, 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 as described above.
- antifungal agent examples include sodium dehydroacetate, sodium benzoate, sodium pyridinethione-1-oxide, ethyl p-hydroxybenzoate, 1,2-benzisothiazolin-3-one and salts thereof. .
- preservative examples include organic sulfur, organic nitrogen sulfur, organic halogen, haloaryl sulfone, iodopropargyl, haloalkylthio, nitrile, pyridine, 8-oxyquinoline, benzothiazole , Isothiazoline, dithiol, pyridine oxide, nitropropane, organotin, phenol, quaternary ammonium salt, triazine, thiazine, anilide, adamantane, dithiocarbamate, brominated indanone, benzyl Examples include bromoacetate-based and inorganic salt-based compounds.
- organic halogen compound include, for example, sodium pentachlorophenol.
- pyridine oxide compound examples include sodium 2-pyridinethiol-1-oxide.
- isothiazoline-based compound examples include, for example, 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, and 5-chloro-2-methyl-4-isothiazoline-3- ON, 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 Examples include chloride.
- antiseptic / antifungal agents include anhydrous sodium acetate, sodium sorbate, sodium benzoate, or trade names Proxel RTM GXL (S) and Proxel RTM XL-2 (S) manufactured by Arch Chemical Co., Ltd. It is done. 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, for example, 5 to 11 without adversely affecting the prepared ink.
- alkanolamines such as diethanolamine, triethanolamine and N-methyldiethanolamine
- hydroxides of alkali metals such as lithium hydroxide, sodium hydroxide and potassium hydroxide
- ammonium hydroxide ammonia water
- carbonic acid Alkali metal carbonates such as lithium, sodium carbonate, sodium bicarbonate, potassium carbonate
- alkali metal salts of organic acids such as sodium silicate and potassium acetate
- inorganic bases such as disodium phosphate
- aminosulfonic acids such as taurine
- Etc any substance can be used as long as it can control the pH of the ink in the range of, for example, 5 to 11 without adversely affecting the prepared ink.
- alkanolamines such as diethanolamine, triethanolamine and N-methyldiethanolamine
- hydroxides of alkali metals
- chelating reagents include disodium ethylenediaminetetraacetate, sodium nitrilotriacetate, sodium hydroxyethylethylenediaminetriacetate, sodium diethylenetriaminepentaacetate, sodium uracil diacetate, and the like.
- rust preventive agent examples include acidic sulfite, sodium thiosulfate, ammonium thioglycolate, diisopropylammonium nitrite, pentaerythritol tetranitrate, dicyclohexylammonium nitrite and the like.
- ultraviolet absorbers include water-soluble sulfonated benzophenone compounds, benzotriazole compounds, salicylic acid compounds, cinnamic acid compounds, triazine compounds, and the like.
- water-soluble polymer compound examples include polyvinyl alcohol, cellulose derivatives, polyamines and polyimines.
- the dye dissolving agent examples include ⁇ -caprolactam, ethylene carbonate, urea and the like.
- antioxidant various organic and metal complex anti-fading agents can be used.
- specific examples of the anti-fading agent include hydroquinones, alkoxyphenols, dialkoxyphenols, phenols, anilines, amines, indanes, chromans, alkoxyanilines, heterocycles, and the like.
- surfactant examples include known surfactants such as anionic, cationic, and nonionic surfactants.
- anionic surfactants include alkyl sulfonates, alkyl carboxylates, ⁇ -olefin sulfonates, polyoxyethylene alkyl ether acetates, N-acyl amino acids and salts thereof, N-acyl methyl taurates, alkyls Sulfate polyoxyalkyl ether 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 sulfonic acid Examples thereof include salts, diethylsulfosuccinate, diethylhexylsylsulfosuccinate, and dioctylsulfosuccinate.
- cationic surfactants examples 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 and the like.
- nonionic surfactants include ethers such as polyoxyethylene nonyl phenyl ether, polyoxyethylene octyl phenyl ether, polyoxyethylene dodecyl phenyl ether, polyoxyethylene oleyl ether, polyoxyethylene lauryl ether, and polyoxyethylene alkyl ether.
- Polyesters such as polyoxyethylene oleate, polyoxyethylene distearate, sorbitan laurate, sorbitan monostearate, sorbitan monooleate, sorbitan sesquioleate, polyoxyethylene monooleate, polyoxyethylene stearate System; 2,4,7,9-tetramethyl-5-decyne-4,7-diol, 3,6-dimethyl-4-octyne-3,6-diol, 3,5- Methyl-1-hexyne-3-acetylene alcohol such as ol; and the like.
- Other specific examples include, for example, trade name Surfinol RTM 104, 105, 82, 465, Olphin RTM STG, manufactured by Nissin Chemical. These ink preparation agents are used alone or in combination.
- 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 substance with few impurities such as ion exchange water and distilled water.
- microfiltration 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 of the present invention is suitable for use in printing, copying, marking, writing, drawing, stamping, or recording (printing), particularly in 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 performs recording by using the ink composition of the present invention as an ink, ejecting ink droplets of the ink in accordance with a recording signal, and attaching the ink droplets to a recording material.
- the ink nozzles used for recording are not particularly limited and can be appropriately selected according to the purpose.
- the recording method is a known method, for example, a charge control method in which ink is ejected using electrostatic attraction force; a drop-on-demand method (pressure pulse method) using vibration pressure of a piezo element; Acoustic ink jet system that irradiates ink by changing to beam and ejects ink using its radiation pressure; thermal ink jet that heats ink to form bubbles and uses generated pressure, that is, bubble jet (registered trademark) system Etc. can be adopted.
- a charge control method in which ink is ejected using electrostatic attraction force
- a drop-on-demand method pressure pulse method
- Acoustic ink jet system that irradiates ink by changing to beam and ejects ink using its radiation pressure
- thermal ink jet that heats ink to form bubbles and uses generated pressure, that is, bubble jet (registered trademark) system Etc.
- a method called a photo ink in which a large number of inks having a low dye concentration (dye content) are ejected in a small volume; a plurality of dyes having substantially the same hue and different dye concentrations in the ink.
- a method of improving the image quality by using the above ink and a method of using a colorless and transparent ink; and the like.
- the colored product of the present invention is a) The ink composition of the present invention described in 1) to 5) above, or b) A substance colored by the ink jet recording method of the present invention as described in 6) to 8) above, preferably a substance colored by the ink jet recording method of the present invention using the ink composition of the present invention. is there.
- the recording material that can be colored is not particularly limited, and examples thereof include information transmission sheets such as paper and film, fibers and cloths (cellulose, nylon, wool, etc.), leather, and base materials for color filters. Among them, the information transmission sheet is preferable.
- the information transmission sheet is preferably a surface-treated sheet, specifically, a sheet such as paper, synthetic paper, or film provided with an ink receiving layer.
- the ink receiving layer is formed by, for example, impregnating or coating the base material with a cationic polymer; inorganic fine particles capable of absorbing pigments in inks such as porous silica, alumina sol, and special ceramics are made hydrophilic with polyvinyl alcohol and polyvinylpyrrolidone.
- a sheet coated with a porous white inorganic substance on the surface is particularly suitable for recording photographic image quality because of its high surface gloss and excellent water resistance.
- the images recorded in these images are greatly discolored by ozone gas.
- the ink composition of the present invention is excellent in ozone gas resistance, a great effect is exhibited even when ink jet recording is performed on such a recording material.
- An example of a typical commercially available sheet coated with the above porous white inorganic material is Canon Inc., trade name: Photo Paper / Gloss Pro “Platinum Grade”, Photo Paper / Gloss Gold: manufactured by Seiko Epson Corporation, trade name: photographic paper Krispia (high gloss), photo paper (gloss), photo matte paper; manufactured by Hewlett-Packard Japan, trade name: advanced photo paper (gloss); Fuji Manufactured by Film Co., Ltd., trade name: painting photo finish Pro; and the like, but the use of the ink composition of the present invention is not limited to these dedicated papers.
- Plain paper is a paper that is not provided with the above ink-receiving layer.
- Examples of commercially available products include Canon Inc., trade name: GF-500, Canon plain paper / white; Seiko Epson Corporation.
- Examples include plain paper dedicated to inkjet such as manufactured and trade name: double-sided fine plain paper;
- PPC plain paper copy
- a container containing the above ink composition is loaded in a predetermined position of an ink jet printer, and the above normal recording method is used. What is necessary is just to record on a recording material.
- the ink jet recording method of the present invention includes the ink composition of the present invention and, for example, known magenta, cyan, yellow, and, if necessary, ink compositions of each color such as green, blue (or violet), and red (or orange). A thing can also be used together.
- the ink composition of each color is poured into each container, and each container is loaded into a predetermined position of the ink jet printer in the same manner as the container containing the ink composition of the present invention and used for ink jet recording.
- each compound contained as the coloring matter (I), (II), or (III) in the ink composition of the present invention is easy and inexpensive to synthesize.
- each compound has high solubility in an aqueous medium and is excellent in water solubility, so that the filterability by a membrane filter in the process of producing an ink composition is good.
- the ink composition of the present invention or an ink prepared from the ink composition is also excellent in storage stability and ejection stability. That is, the ink composition of the present invention has good storage stability without solid precipitation, changes in physical properties, changes in hue, etc. after long-term storage.
- the ink composition of the present invention is suitably used for inkjet recording, writing instruments, etc., and particularly when recorded on inkjet dedicated paper, there is no neutral in both dark and light color printing. Even when recorded on different media, the hue changes little.
- the printed image has a very high print density, and even when a high concentration solution is printed, the image does not cause bronzing.
- various fastnesses such as moisture resistance and water resistance, especially light resistance and ozone gas resistance. Both properties are excellent.
- full-color ink jet recording with excellent fastness and storage stability is possible, and of course can be used on plain paper. .
- the ink composition of the present invention is extremely useful as a black ink for inkjet recording.
- the obtained diazo suspension was added dropwise to the aqueous solution containing the compound represented by the formula (30) obtained above at a reaction temperature of 20 to 30 ° C. over 20 minutes. During this time, sodium carbonate was added to the reaction system to maintain the pH value at 7.0 to 8.0. After completion of the dropwise addition, the mixture was stirred at the same temperature for 2 hours, salted out by adding sodium chloride, and the precipitated solid was collected by filtration to obtain 16.9 parts of a wet cake containing a compound represented by the following formula (31). Obtained.
- the obtained diazo solution was added dropwise to the aqueous solution containing the compound represented by the formula (32) obtained above at a reaction temperature of 20 to 30 ° C. over 30 minutes. During this time, sodium carbonate was added to the reaction system to maintain the pH value at 7.0 to 8.0. After completion of dropping, the mixture was stirred at the same temperature for 2 hours, sodium chloride was added for salting out, and the precipitated solid was collected by filtration to obtain 40.8 parts of a wet cake. The obtained wet cake was dissolved in 180 parts of water, 250 parts of methanol was added for crystallization, and the precipitated solid was collected by filtration to obtain a wet cake.
- the obtained wet cake was dissolved in 180 parts of water, 22 parts of lithium chloride was added, 200 parts of methanol was added for crystallization, and the precipitated solid was collected by filtration to obtain a wet cake.
- the obtained wet cake was dissolved again in 80 parts of water, and 200 parts of methanol was added for crystallization, and the precipitated solid was collected by filtration and dried to obtain a compound represented by the following formula (33) ( ( ⁇ max: 606.5 nm) 7.0 parts were obtained as a lithium salt.
- this compound is No. No. 38 and No. 3 listed in Table 7.
- 40 is a mixture with the compound represented by 40.
- the obtained liquid was heated to 65 ° C., stirred at the same temperature for 2 hours, then cooled to room temperature, and the precipitated solid was collected by filtration to obtain a wet cake containing a compound represented by the following formula (40) 130 parts were obtained.
- Step 2 51 parts of a wet cake containing the compound represented by the formula (40) obtained in the above (Step 2) is dissolved in 150 parts of water to a pH of 7 to 8 by adding a 25% aqueous sodium hydroxide solution to obtain a solution. It was. This solution was added to the reaction solution, heated to 65 to 70 ° C., and stirred for 7 hours while maintaining the pH value at 6 to 7 by adding an aqueous sodium carbonate solution. Next, after adding 1.7 parts of piperazine, the mixture was heated to 90 to 95 ° C. and stirred for 18 hours while maintaining the pH value at 7 to 8 by adding an aqueous sodium carbonate solution.
- the obtained reaction solution was cooled to 20-30 ° C., salted out by adding sodium chloride, and the precipitated solid was collected by filtration to obtain a wet cake.
- This wet cake was dissolved in 600 parts of water.
- 50 parts of methanol and then 800 parts of 2-propanol were added and stirred for 30 minutes.
- the precipitated solid was collected by filtration to obtain a wet cake.
- the obtained wet cake was dissolved again in 400 parts of water, 1000 parts of 2-propanol was added, and the precipitated solid was collected by filtration and dried to obtain an azo compound ( ⁇ max) represented by the following formula (41). : 435 nm) to obtain 25.3 parts as a sodium salt.
- Examples 1 to 4 and Comparative Example 1 [(A) Preparation of ink] By mixing each component described in Table 11 below, the present invention and a comparative ink composition were obtained, respectively, and then the contaminants were filtered off with a 0.45 ⁇ m membrane filter to obtain a test ink. Obtained.
- This ink preparation is referred to as Examples 1 to 4 and Comparative Example 1, respectively.
- the obtained ink of the present invention did not cause precipitation separation during storage and did not change its physical properties even after long-term storage.
- ion-exchanged water was used for ink preparation. At the time of ink preparation, lithium hydroxide was appropriately used for the purpose of adjusting the pH of each ink to 8 to 10, and ion exchange water was added to make a total amount of 100 parts.
- pigments (I), (II), and (III) correspond to pigment (I), pigment (II), and pigment (III), respectively, contained in the ink composition of the present invention.
- Each dye column is vertically divided into two by a broken line, and the numbers in parentheses described in the upper column correspond to the formula numbers of the compounds described in the examples, and the number of parts used in the lower column Was described.
- all the numbers described in the columns of the water-soluble organic solvent, each additive and the like other than the pigment column described the number of parts in the composition.
- surface represents the following meanings.
- GLY glycerin NMP: N-methyl-2-pyrrolidone IPA: isopropanol BCTL: butyl carbitol EDTA 2Na: disodium ethylenediaminetetraacetate SURF: trade name Surfinol RTM manufactured by Nisshin Chemical Co., Ltd.
- Ozone gas resistance test-1 A test piece was placed on a trade name “Ozone Weather Omometer” manufactured by Suga Test Instruments Co., Ltd., and allowed to stand for 24 hours under the conditions of ozone concentration 10 pm, humidity 50% RH, and temperature 23 ° C.
- CIE L * , a * , and b * were measured for the recorded images of each test piece before and after ozone exposure, and the color difference ⁇ E was calculated by the following equation.
- ⁇ L * , ⁇ a * , and ⁇ b * mean the difference between L * , a * , and b * before and after exposure, respectively.
- ⁇ E ( ⁇ L * 2 + ⁇ a * 2 + ⁇ b * 2 ) 1/2
- the test results were evaluated according to the following criteria. Those with a small ⁇ E before and after exposure to ozone represent excellent results with little color change before and after the test. The evaluation results are shown in Table 12.
- Ozone gas resistance test-2 A test piece was placed on a product name “ozone weatherometer” manufactured by Suga Test Instruments Co., Ltd., and left for 48 hours under conditions of an ozone concentration of 10 pm, a humidity of 50% RH, and a temperature of 23 ° C.
- CIE L * , a * , and b * were measured for the recorded images of each test piece before and after ozone exposure, and the color difference ⁇ E was calculated by the following equation.
- ⁇ L * , ⁇ a * , and ⁇ b * mean the difference between L * , a * , and b * before and after exposure, respectively.
- the evaluation results are shown in Table 12.
- the inks of the respective examples showed very excellent results in all the test items. Specifically, it is clear that the inks of the respective examples have less color change with respect to ozone gas exposure than the ink of Comparative Example 1, and give a printed image having excellent ozone gas resistance.
- each component described in Table 13 below was mixed to obtain the ink composition for comparison with the present invention, and then mixed with a 0.45 ⁇ m membrane filter.
- a test ink was obtained by filtering the product.
- This ink preparation is referred to as Examples 1 to 4 and Comparative Examples 2 to 5, respectively.
- the abbreviations in Table 13 are the same as those in Table 11.
- the inks of the respective examples showed superior results as compared with the inks of the respective comparative examples.
- an ink composed of one of the dye (I) and the dye (II) and as in Comparative Example 5, between the dye (I) and the dye (II).
- the ink composed of the two does not give a neutral and achromatic black hue and is inappropriate as a black quality.
- the inks of the respective examples containing the coloring matter (I), the coloring matter (II), and the coloring matter (III) of the present invention all have a saturation of 5 or less, and are more achromatic black and high. It is clear that a recorded image with a quality black hue is given.
- the ink composition of the present invention containing any of the three kinds of specific dyes (I) to (III) is required for inkjet recording images as compared with the conventional black ink composition. It has been found that a high-quality, black recorded image is obtained that is excellent in various fastness properties, particularly ozone gas resistance, has a sufficiently high printing density, and has low saturation and no color.
- the ink composition of the present invention is suitable as a black ink liquid for various recordings such as inkjet recording and writing instruments, particularly inkjet recording.
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Abstract
Description
従来、万年筆、フェルトペン用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、水溶性色素を水性媒体中に溶解した水性インクが使用されている。これらの水性インクにおいては、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、一般に水溶性有機溶剤が添加されている。そして、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よいこと、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、使用される水溶性色素には、特に水への溶解度が高いこと、インクに添加される水溶性有機溶剤への溶解度が高いことが要求される。さらに、形成される画像には、耐水性、耐光性、耐ガス性、耐湿性等の画像堅牢性が求められている。
1)
色素(I)として、少なくとも1種類の下記式(1)で表される化合物若しくはその互変異性体、又はそれらの塩と、色素(II)として、少なくとも1種類の下記式(3)で表される化合物若しくはその互変異性体又はそれらの塩と、色素(III)として、少なくとも1種類の下記式(4)で表される化合物又はその塩と、を含有することを特徴とするインク組成物、
R1及びR2は、それぞれ独立に、水素原子;ハロゲン原子;シアノ基;カルボキシ基;スルホ基;スルファモイル基;N-アルキルアミノスルホニル基;N,N-ジアルキルアミノスルホニル基;N-フェニルアミノスルホニル基;ホスホ基;ニトロ基;アシル基;ウレイド基;C1-C4アルキル基;ヒドロキシ基又はC1-C4アルコキシ基で置換されたC1-C4アルキル基;C1-C4アルコキシ基;ヒドロキシ基、C1-C4アルコキシ基、スルホ基、及びカルボキシ基よりなる群から選択される少なくとも1種類の基で置換されたC1-C4アルコキシ基;又は、アシルアミノ基;を表し、
R3及びR4は、それぞれ独立に、水素原子;ハロゲン原子;シアノ基;カルボキシ基;スルホ基;ニトロ基;C1-C4アルキル基;C1-C4アルコキシ基;又は、ヒドロキシ基、C1-C4アルコキシ基、スルホ基、及びカルボキシ基よりなる群から選択される少なくとも1種類の基で置換されたC1-C4アルコキシ基;を表し、
nは0又は1であり、
基Aは下記式(2)で表される基である。]
R5は、シアノ基;カルボキシ基;C1-C4アルキル基;C1-C4アルコキシカルボニル基;又は、フェニル基;を表し、
R6、R7、及びR8は、それぞれ独立に、水素原子;ハロゲン原子;シアノ基;カルボキシ基;スルホ基;ニトロ基;C1-C4アルキル基;C1-C4アルコキシ基;ヒドロキシ基、C1-C4アルコキシ基、及びスルホ基よりなる群から選択される少なくとも1種類の基で置換されたC1-C4アルコキシ基;又は、アシルアミノ基;を表す。]
mは0又は1であり、
R101からR103は、それぞれ独立に、水素原子;スルホ基;又は、C1-C4アルコキシ基;を表し、
基Dは、1つ乃至3つのスルホ基で置換された、フェニル基又はナフチル基を表す。]
R201からR204は、それぞれ独立に、水素原子;又は、スルホ基で置換されたC1-C4アルコキシ基;を表す。]
上記式(1)において、
ニトロ基の置換位置が、該ニトロ基が置換するベンゼン環上のアゾ基の置換位置を1位として4位であり、
基Aの置換位置が、該基Aが置換するベンゼン環上のアゾ基の置換位置を1位として4位であり、
nが1であり、
R1、R3、及びR7がスルホ基であり、
R2が水素原子であり、
R4が水素原子、塩素原子、又はスルホ基であり、
R5がカルボキシ基である上記1)に記載のインク組成物、
3)
上記式(3)において、
mが1であり、
R101が水素原子又はスルホ基であり、
R102がC1-C4アルコキシ基であり、
R103が水素原子又はスルホ基であり、
基Dが、1つ又は2つのスルホ基で置換されたフェニル基、及び、3つのスルホ基で置換されたナフチル基のいずれかである上記1)又は2)に記載のインク組成物、
4)
前記式(4)において、
R201及びR202の少なくとも一方がスルホプロポキシ基であり、
R203及びR204の少なくとも一方がスルホプロポキシ基である上記1)乃至3)のいずれか一項に記載のインク組成物、
インク組成物中に含有する色素の総質量において、上記色素(I)の比率が10~80質量%であり、上記色素(II)の比率が10~80質量%であり、上記色素(III)の比率が10~40質量%である上記1)乃至4)のいずれか一項に記載のインク組成物、
6)
上記1)乃至5)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、該インクの液滴を記録信号に応じて吐出させて被記録材に付着させることにより、記録を行うインクジェット記録方法、
7)
上記被記録材が情報伝達用シートである上記6)に記載のインクジェット記録方法、
8)
上記情報伝達用シートが、多孔性白色無機物を含有するインク受容層を有するシートである上記7)に記載のインクジェット記録方法、
9)
上記1)乃至5)のいずれか一項に記載のインク組成物、又は、
上記6)乃至8)のいずれか一項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、
10)
上記1)乃至5)のいずれか一項に記載のインク組成物を含有する容器が装填されたインクジェットプリンタ、
に関する。
なお、以下の本明細書においては煩雑さを避けるため、「化合物」、「その互変異性体」、「それらの塩」の全てを含めて、「化合物」と簡略化して記載する。また、本発明において特に断りが無い限り、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。
本発明のインク組成物に含有される色素(I)は、上記式(1)で表される化合物である。色素(I)は少なくとも1種類の式(1)で表される化合物からなり、式(1)で表される単一の化合物からなる色素であってもよく、複数の化合物からなる色素の混合物であってもよい。なお、式(1)で表される化合物は、水溶性の染料である。
また、N,N-ジアルキルアミノスルホニル基としては、N,N-ジメチルアミノスルホニル基、N,N-ジ(n-プロピル)アミノスルホニル基等のN,N-ジC1-C4アルキルアミノスルホニル基;等が挙げられる。
アルキルカルボニル基としては、アルキル部分が直鎖又は分岐鎖の、通常C1-C6アルキルカルボニル基、好ましくはC1-C4アルキルカルボニル基が挙げられ、直鎖のものが好ましい。具体例としては、アセチル(メチルカルボニル)、プロピオニル(エチルカルボニル)、ブチリル(プロピルカルボニル)等の直鎖のもの;イソブチリル(イソプロピルカルボニル)等の分岐鎖のもの;等が挙げられる。
アリールカルボニル基としては、アリール部分の炭素数がC6-C10のものが挙げられ、具体例としてはベンゾイル、ナフトイル等が挙げられる。
これらの中ではスルホ基で置換されたC1-C4アルコキシ基が好ましい。
アルキルカルボニルアミノ基としては、アルキル部分が直鎖又は分岐鎖の、通常C1-C6アルキルカルボニルアミノ基、好ましくはC1-C4アルキルカルボニルアミノ基が挙げられ、直鎖のものが好ましい。具体例としては、アセチルアミノ(メチルカルボニルアミノ)、プロピオニルアミノ(エチルカルボニルアミノ)、ブチリルアミノ(プロピルカルボニルアミノ)等のアルキル部分が直鎖のもの;イソブチリルアミノ(イソプロピルカルボニルアミノ)等のアルキル部分が分岐鎖のもの;等が挙げられる。
アリールカルボニルアミノ基としては、アリール部分の炭素数がC6-C10のものが挙げられ、具体例としてはベンゾイルアミノ、ナフトイルアミノ等が挙げられる。
好ましくは、該ベンゼン環に置換するアゾ基の置換位置を1位として、下記(a)乃至(d)の組み合わせが挙げられ、(a)の組み合わせが特に好ましい。
(a)ニトロ基が4位、R1が2位、R2が6位。
(b)ニトロ基が4位、R1が2位、R2が5位。
(c)ニトロ基が2位、R1が4位、R2が6位。
(d)ニトロ基が3位、R1が2位、R2が5位。
特に好ましくは、いずれか一方が塩素原子であり、他方がスルホ基であるものが挙げられる。
好ましくは、該ベンゼン環に置換するアゾ基の置換位置を1位として、下記(e)乃至(h)の組み合わせが挙げられ、(e)の組み合わせが特に好ましい。
(e)R3及びR4の一方が3位、他方が5位、基Aが4位。
(f)R3及びR4の一方が2位、他方が5位、基Aが4位。
(g)R3及びR4の一方が2位、他方が4位、基Aが5位。
(h)R3及びR4の一方が3位、他方が4位、基Aが5位。
具体例としては、2-ヒドロキシエトキシ、2-ヒドロキシプロポキシ、3-ヒドロキシプロポキシ等の、ヒドロキシC1-C4アルコキシ基;メトキシエトキシ、エトキシエトキシ、n-プロポキシエトキシ、イソプロポキシエトキシ、n-ブトキシエトキシ、メトキシプロポキシ、エトキシプロポキシ、n-プロポキシプロポキシ、イソプロポキシブトキシ、n-プロポキシブトキシ等の、C1-C4アルコキシC1-C4アルコキシ基;3-スルホプロポキシ、4-スルホブトキシ等の、スルホC1-C4アルコキシ基;等が挙げられる。
好ましくは、該ベンゼン環に置換する(ピラゾロン環の)窒素原子の置換位置を1位として、下記(i)乃至(k)の組み合わせが挙げられる。
(i)3つがいずれも水素原子以外のとき、2位、4位、及び5位;又は、2位、4位、及び6位。
(j)2つが水素原子以外の基、1つが水素原子のとき、水素原子以外の基が2位及び4位;2位及び5位;又は、3位及び5位。
(k)1つが水素原子以外の基、2つが水素原子のとき、水素原子以外の基が4位。
なお、下記式(5)乃至(7)中、R101からR103は、いずれも上記式(3)におけるのと同じ意味を表す。
ナフチル基上のスルホ基の位置については特に制限されないが、以下のものが好ましい。
すなわち、
[基Dが1-ナフチル基のとき]
(l)スルホ基の数が1つのとき、3、4、5、6、7位。
(m)スルホ基の数が2つのとき、3位と4位、3位と5位、3位と6位、3位と7位、4位と6位、4位と7位、5位と7位の組み合わせ。
(n)スルホ基の数が3つのとき、3位と4位と6位、3位と4位と7位、3位と5位と6位、3位と5位と7位、3位と6位と7位の組み合わせ。
[基Dが2-ナフチル基のとき]
(o)スルホ基の数が1つのとき、4、5、6、7、8位。
(p)スルホ基の数が2つのとき、4位と6位、4位と7位、4位と8位、5位と6位、5位と7位、5位と8位、6位と8位の組み合わせ。
(q)スルホ基の数が3つのとき、4位と6位と7位、4位と6位と8位、4位と7位と8位の組み合わせ。
具体例としては、7-スルホナフト-1-イル、5,7-ジスルホナフト-2-イル、6,8-ジスルホナフト-2-イル、4,8-ジスルホナフト-2-イル、4,6,8-トリスルホナフト-2-イル、4,7,8-トリスルホナフト-2-イル等が挙げられる。
このうち特に好ましいものは、4,6,8-トリスルホナフト-2-イルである。
各表においてスルホ基、カルボキシ基等の官能基は、便宜上、遊離酸の形で記載する。
具体例としては、2-スルホエトキシ、3-スルホプロポキシ、4-スルホブトキシ等のスルホC1-C4アルコキシ基;等が挙げられる。3-スルホプロポキシが特に好ましい。
各表においてスルホ基、カルボキシ基等の官能基は、便宜上、遊離酸の形で記載する。
式(8)におけるZ1、Z2、Z3、Z4のアルキル基の具体例としては、メチル、エチル、n-プロピル、イソプロピル、n-ブチル、イソブチル、sec-ブチル、t-ブチル等が挙げられる。ヒドロキシアルキル基の具体例としては、ヒドロキシメチル、ヒドロキシエチル、3-ヒドロキシプロピル、2-ヒドロキシプロピル、4-ヒドロキシブチル、3-ヒドロキシブチル、2-ヒドロキシブチル等のヒドロキシC1-C4アルキル基が挙げられる。ヒドロキシアルコキシアルキル基の例としては、ヒドロキシエトキシメチル、2-ヒドロキシエトキシエチル、3-ヒドロキシエトキシプロピル、2-ヒドロキシエトキシプロピル、4-ヒドロキシエトキシブチル、3-ヒドロキシエトキシブチル、2-ヒドロキシエトキシブチル等のヒドロキシC1-C4アルコキシC1-C4アルキル基が挙げられ、これらのうちヒドロキシエトキシC1-C4アルキルが好ましい。特に好ましいものとしては、水素原子;メチル;ヒドロキシメチル、ヒドロキシエチル、3-ヒドロキシプロピル、2-ヒドロキシプロピル、4-ヒドロキシブチル、3-ヒドロキシブチル、2-ヒドロキシブチル等のヒドロキシC1-C4アルキル基;ヒドロキシエトキシメチル、2-ヒドロキシエトキシエチル、3-ヒドロキシエトキシプロピル、2-ヒドロキシエトキシプロピル、4-ヒドロキシエトキシブチル、3-ヒドロキシエトキシブチル、2-ヒドロキシエトキシブチル等のヒドロキシエトキシC1-C4アルキル基が挙げられる。
なお、各工程における化合物の構造式は遊離酸の形で表すものとし、また下記式(9)乃至(25)において適宜使用されるR201からR204は、それぞれ式(4)におけるのと同じ意味を表す。
式(11)で表される化合物の別合成方法としては、以下の方法が挙げられる。すなわち、下記式(9)で表される化合物を常法によりジアゾ化し、これとアニリンのメチル-ω-スルホン酸誘導体とを常法によりカップリング反応させた後、アルカリ条件下で加水分解して下記式(12)で表される化合物を得る。得られた式(12)で表される化合物を発煙硫酸等で処理してスルホ化することにより、式(11)で表される化合物を得ることができる。また、式(11)で表される化合物の中には、市販品として購入できるもの(例えばC.I.アシッドイエロー9)もある。
式(9)で表される化合物のジアゾ化物と式(10)で表される化合物とのカップリング反応も、それ自体公知の反応条件で実施される。例えば、水又は水性有機媒体中、0~30℃、好ましくは5~25℃の温度、且つ、酸性から弱酸性のpH値、例えばpH1~6で反応を行うことが有利である。ジアゾ化反応液は酸性であり、また、カップリング反応の進行により反応系内はさらに酸性化してしまうため、塩基の添加によって反応液を上記のpH値へ調整するのが好ましい。塩基としては、例えば、水酸化リチウム、水酸化ナトリウム等のアルカリ金属水酸化物;炭酸リチウム、炭酸ナトリウム、炭酸カリウム等のアルカリ金属炭酸塩;酢酸ナトリウム等の酢酸塩;アンモニア又は有機アミン;等が使用できる。式(9)で表される化合物と式(10)で表される化合物とは、ほぼ化学量論量で用いる。
式(11)で表される化合物のジアゾ化物と、式(13)、式(15)、式(17)、又は式(19)で表される化合物とのカップリング反応も、それ自体公知の反応条件で実施される。例えば、水又は水性有機媒体中、0~30℃、好ましくは5~25℃の温度、且つ、酸性から弱酸性のpH値、例えばpH1~6で反応を行うことが有利である。ジアゾ化反応液は酸性であり、また、カップリング反応の進行により反応系内はさらに酸性化してしまうため、塩基の添加によって反応液を上記のpH値へ調整するのが好ましい。塩基としては上記と同じものが使用できる。式(11)の化合物と、式(13)、式(15)、式(17)、又は式(19)の化合物とは、ほぼ化学量論量で用いる。
本発明のインク組成物中に含有する色素の総質量中、色素(I)の比率は10~80質量%、好ましくは20~70質量%、より好ましくは20~65質量%、色素(II)の比率は10~80質量%、好ましくは20~70質量%、より好ましくは20~65質量%、色素(III)の比率は10~40質量%である。
また、本発明のインク組成物の総質量における色素(I)、色素(II)、及び色素(III)の総含有量は、インク組成物の総質量に対して、通常0.1~20質量%、好ましくは1~10質量%、より好ましくは2~8質量%である。
本発明のインク組成物には、さらに水溶性有機溶剤を例えば0~30質量%、インク調製剤を例えば0~20質量%含有してもよく、残部は水である。
インク調製剤としては、例えば、防黴防腐剤、pH調整剤、キレート試薬、防錆剤、紫外線吸収剤、水溶性高分子化合物、色素溶解剤、界面活性剤、酸化防止剤(退色防止剤)等の公知の添加剤が挙げられる。
水溶性有機溶剤の含有量は、本発明のインク組成物の総質量に対して0~60質量%、好ましくは10~50質量%であり、インク調製剤は同様に0~20質量%、好ましくは0~15質量%用いるのがよい。上記以外の残部は水である。
これらの中でも、イソプロパノール、N-メチル-2-ピロリドン、グリセリン、ブチルカルビトール等が好ましい。
有機ハロゲン系化合物の具体例としては、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の具体例としては、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の具体例としては、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の具体例としては、無水酢酸ナトリウム、ソルビン酸ナトリウム、安息香酸ナトリウム、あるいはアーチケミカル社製、商品名プロクセルRTMGXL(S)やプロクセルRTMXL-2(S)等が挙げられる。
なお、本明細書において、上付きの「RTM」は、登録商標を意味する。
これらのインク調製剤は、単独又は混合して用いられる。
該記録方法は、公知の各方式、例えば、静電誘引力を利用してインクを吐出させる電荷制御方式;ピエゾ素子の振動圧力を利用するドロップオンデマンド方式(圧力パルス方式);電気信号を音響ビームに変えインクに照射し、その放射圧を利用してインクを吐出させる音響インクジェット方式;インクを加熱して気泡を形成し、生じた圧力を利用するサーマルインクジェット、すなわちバブルジェット(登録商標)方式;等を採用することができる。
なお、インクジェット記録方法には、フォトインクと称する、インク中の色素濃度(色素含有量)の低いインクを、小さい体積で多数射出する方式;実質的に同じ色相でインク中の色素濃度の異なる複数のインクを用いて画質を改良する方式;及び無色透明のインクを用いる方式;等も含まれる。
a)上記1)乃至5)に記載の本発明のインク組成物、又は、
b)上記6)乃至8)に記載の本発明のインクジェット記録方法、により着色された物質であり、好ましくは本発明のインク組成物を用いて、本発明のインクジェット記録方法により着色された物質である。
着色されうる被記録材としては特に制限はないが、例えば、紙、フィルム等の情報伝達用シート、繊維や布(セルロース、ナイロン、羊毛等)、皮革、カラーフィルタ用基材等が挙げられ、中でも情報伝達用シートが好ましい。
情報伝達用シートとしては、表面処理されたもの、具体的には紙、合成紙、フィルム等の基材にインク受容層を設けたものが好ましい。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;多孔質シリカ、アルミナゾル、特殊セラミックス等の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表面に塗工する方法;等により設けられる。このようなインク受容層を設けたものは、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。
上記のような多孔性白色無機物を表面に塗工したシートとして代表的な市販品の一例を挙げると、キヤノン(株)製、商品名:写真用紙・光沢プロ「プラチナグレード」、写真用紙・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)、フォトマット紙;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;等があるが、本発明のインク組成物の用途としては、これらの専用紙等に限られるものではない。
本発明のインクジェット記録方法は、本発明のインク組成物と、例えば公知のマゼンタ、シアン、イエロー、及び必要に応じて、グリーン、ブルー(又はバイオレット)、レッド(又はオレンジ)等の各色のインク組成物とを併用することもできる。
各色のインク組成物は、それぞれの容器に注入され、その各容器を本発明のインク組成物を含有する容器と同様にインクジェットプリンタの所定の位置に装填してインクジェット記録に使用される。
本発明のインク組成物又は該インク組成物から調製されるインクは、保存時の安定性や吐出安定性にも優れている。すなわち、本発明のインク組成物は、長期間保存後の固体析出、物性変化、色相の変化等もなく、貯蔵安定性が良好である。
また、本発明のインク組成物は、インクジェット記録用、筆記用具用等として好適に用いられ、特にインクジェット専用紙に記録した際には、濃色及び淡色印刷時のいずれにおいても色味のないニュートラルな黒~グレー色を呈し、異なるメディアに記録した場合であっても、色相の変化が少ない。また、記録画像の印字(印刷)濃度が非常に高く、高濃度溶液を印字した場合でもその画像にブロンジングを起こさず、さらに、耐湿性、耐水性等の各種堅牢性、特に耐光性及び耐オゾンガス性が共に優れている。
また、マゼンタ、シアン、及びイエロー色素を含有する他のインク組成物と併用することで、各種堅牢性に優れ、保存性の優れたフルカラーのインクジェット記録が可能であり、普通紙にも当然使用できる。
このように本発明のインク組成物は、インクジェット記録用の黒色インクとして極めて有用である。
実施例中、特に断りのない限り、「部」及び「%」とあるのは、質量基準である。また、合成反応や晶析等の各操作については撹拌下に行った。1回の合成反応において目的とする化合物の必要量が得られなかった場合には、必要量が得られるまで該反応を繰り返し行った。
また、下記の各式において、スルホ、カルボキシ等の官能基は、便宜上、遊離酸の形で記載する。
また、実施例中に記載したpH値及び反応温度は、いずれも反応系内における測定値を示す。
また、合成した化合物の最大吸収波長(λmax)は、pH5~8の水溶液中で測定し、測定した化合物については実施例中に測定値を記載した。
(工程1)
2-アミノ-6-メトキシベンゾチアゾール5.0部を15%発煙硫酸16部中に15~25℃でゆっくり添加した。添加後、同温度で2時間撹拌した後、60部の氷水中に約10分間かけて滴下した。析出した結晶を濾取し、乾燥して、下記式(27)で表される化合物6.4部を得た。
50%硫酸20部に上記工程(1)で得られた式(27)で表される化合物3.2部を50%硫酸20部に懸濁し、撹拌下、5~10℃で40%ニトロシル硫酸4.7部を約10分間かけて滴下することによりジアゾ懸濁液を得た。
一方、水30部に上記式(28)で表される化合物2.9部、スルファミン酸0.4部、次いで水酸化ナトリウムを加えてpH5.0~5.5とすることにより水溶液を得た。
得られた水溶液に上記のジアゾ懸濁液を反応温度20~30℃で、約10分間かけて滴下した。
滴下終了後、同温度で2時間撹拌し、水酸化ナトリウムを加えてpH0.7~1.2にした後に析出固体を濾取することにより、下記式(29)で表される化合物を含むウェットケーキ11.8部を得た。
なお、下記式(28)の化合物は、特開2004-083492号公報に記載の方法で得た。
水30部に下記式(30)で表される化合物2.7部、次いで水酸化ナトリウムを加えてpH7.5~8.0とすることにより水溶液を得た。
一方、撹拌下、上記(工程2)で得られた式(29)で表される化合物を含むウェットケーキを水110部に懸濁し、水酸化ナトリウムを加えてpH6.0~6.5とすることにより水溶液を得た。
得られた水溶液に35%塩酸2.6部、次いで反応温度15~20℃で40%亜硝酸ナトリウム水溶液2.0部を約5分間かけて滴下することにより、ジアゾ懸濁液を得た。
得られたジアゾ懸濁液を、先に得られた式(30)で表される化合物を含む水溶液に、反応温度20~30℃で、20分間かけて滴下した。この間、反応系内に炭酸ナトリウムを加えてpH値を7.0~8.0に保持した。
滴下終了後、同温度で2時間撹拌し、塩化ナトリウムの添加により塩析し、析出した固体を濾取することにより、下記式(31)で表される化合物を含むウェットケーキ16.9部を得た。
水30部に3,5-ジスルホアニリン12.7部、35%塩酸18.3部、次いで反応温度0~5℃で40%亜硝酸ナトリウム水溶液9.1部を約5分間かけて滴下することにより、ジアゾ液を得た。
一方、撹拌下、アセチルこはく酸ジメチルに水9部、次いでエタノール2部を加え懸濁させた後、先に得られたジアゾ液を反応温度10~20℃で、15分間かけて滴下した。
滴下後、反応系内に酢酸ナトリウムを加えてpH値を7.0~8.0に保持した。滴下終了後、同温度で2時間撹拌し、反応系内に水酸化ナトリウムを加えてpH13.0~13.5、15~20℃で2時間撹拌後、35%塩酸を加えpH0~0.5、5~10℃で2時間撹拌し、析出した結晶を濾取し、下記式(32)で表される化合物10.9部を得た。
水30部に上記(工程4)で得られた式(32)で表される化合物2.5部、次いで水酸化ナトリウムを加えてpH7.5~8.0とすることにより水溶液を得た。
一方、撹拌下、上記(工程3)で得られた式(31)で表される化合物を含むウェットケーキ全量を水150部に溶解し、35%塩酸3.5部、次いで反応温度20~25℃で40%亜硝酸ナトリウム水溶液1.5部を約5分間かけて滴下することにより、ジアゾ液を得た。
得られたジアゾ液を、先に得られた式(32)で表される化合物を含む水溶液に、反応温度20~30℃で、30分間かけて滴下した。この間、反応系内に炭酸ナトリウムを加えてpH値を7.0~8.0に保持した。
滴下終了後、同温度で2時間撹拌し、塩化ナトリウムを添加して塩析し、析出した固体を濾取することにより、ウェットケーキ40.8部を得た。得られたウェットケーキを水180部に溶解し、メタノール250部を添加して晶析し、析出した固体を濾取することによりウェットケーキを得た。さらに、得られたウェットケーキを水180部に溶解し、塩化リチウム22部を添加し、メタノール200部を添加して晶析し、析出した固体を濾取することによりウェットケーキを得た。得られたウェットケーキを再度、水80部に溶解し、メタノール200部を添加して晶析し、析出した固体を濾取し、乾燥することにより、下記式(33)で表される化合物(λmax:606.5nm)7.0部をリチウム塩として得た。なお、この化合物は、表7に記載のNo.38で表される化合物と、表7に記載のNo.40で表される化合物との混合物である。
上記式(32)の合成において、原料として、3,5-ジスルホアニリン12.7部に代えて、2-アミノナフタレン-4,6,8-トリスルホン酸19.2部を用いることによって、下記式(34)で表される化合物を得、これを原料として、合成例1の(工程5)を行うことにより、下記式(35)で表される化合物(λmax:607.0nm)を得た。なお、この化合物は、表5に記載のNo.32で表される化合物と、表6に記載のNo.33で表される化合物との混合物である。
下式(36)で表される化合物(λmax:604.0nm)を、特開2009-84346号公報の実施例2に記載の方法により合成した。この化合物は、表5に記載のNo.28で表される化合物と、表5に記載のNo.29で表される化合物との混合物である。
(工程1)
水200部に下記式(37)で表されるモノアゾ化合物(C.I.アシッドイエロー9)35.7部を加え、水酸化ナトリウムでpH6に調整しながら溶解し、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℃に保った5%塩酸300部中に30分間かけて滴下した後、20℃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。
得られたメチル-ω-スルホン酸誘導体水溶液を、先に調製したジアゾ反応液中に加え、0~15℃、炭酸水素ナトリウムの添加によりpH4~5に調整しながら5時間反応させた。反応液に35%塩酸100部を添加した後、70~80℃でさらに5時間反応させた。反応液に塩化ナトリウムを加えて塩析し、析出固体を濾過分取することにより、下記式(38)で表される化合物120部をウェットケーキとして得た。
水200部に上記式(37)で表されるモノアゾ化合物(C.I.アシッドイエロー9)35.7部を加え、水酸化ナトリウムでpH6に調整しながら溶解し、次いで亜硝酸ナトリウム7.2部を加えた。この溶液を、35%塩酸31.3部を水200部で希釈した水溶液中に、0~10℃を保ちながら30分間かけて滴下した後、20℃以下で1時間撹拌してジアゾ化反応を行った。得られた反応液にスルファミン酸0.4部を添加し5分間撹拌してジアゾ反応液を調製した。
一方、40~50℃の温水300部に、特開2004-083492号公報に記載の方法で得た下記式(39)で表される化合物24.0部及び25%水酸化ナトリウム水溶液を加えてpH5~6に調整し、水溶液を得た。この水溶液に上記で得られたジアゾ反応液を15~25℃で、30分間かけて滴下した。滴下中は炭酸ナトリウム水溶液の添加によりpH5~6に保持した。滴下後、同温度、同pHで2時間撹拌した後、35%塩酸の添加によりpH0~1に調整した。得られた液を65℃に加熱し、同温度で2時間撹拌した後、室温まで冷却し、析出した固体を濾過分取することにより、下記式(40)で表される化合物を含むウェットケーキ130部を得た。
水300部に上記(工程1)で得られた式(38)で表される化合物を含むウェットケーキ50部を25%水酸化ナトリウム水溶液の添加によりpH8~9として溶解した。この溶液にライオン(株)社製、商品名:レオコールRTMTD90(界面活性剤、以下「レオコールRTMTD90」と省略)0.48部を加えた後、5~10℃で塩化シアヌル7.3部を添加した。添加後、炭酸ナトリウム水溶液の添加によりpH値を6~7に保持しながら5~10℃で6時間撹拌した。
一方、水150部に上記(工程2)で得られた式(40)で表される化合物を含むウェットケーキ51部を25%水酸化ナトリウム水溶液の添加によりpH7~8として溶解し、溶液を得た。この溶液を上記反応液に添加した後、65~70℃に加熱し、炭酸ナトリウム水溶液の添加によりpH値を6~7に保持しながら7時間撹拌した。次にピペラジン1.7部を添加した後、90~95℃に加熱し、炭酸ナトリウム水溶液の添加によりpH値を7~8に保持しながら18時間撹拌した。
得られた反応液を20~30℃まで冷却後、塩化ナトリウムの添加により塩析し、析出した固体を濾過分取してウェットケーキを得た。
このウェットケーキを水600部に溶解した。この溶液にメタノール50部、次いで2-プロパノール800部を加え、30分間撹拌した。析出した固体を濾過分取することによりウェットケーキを得た。得られたウェットケーキを再度水400部に溶解し、2-プロパノール1000部を添加し、析出した固体を濾過分取し、乾燥することにより、下記式(41)で表されるアゾ化合物(λmax:435nm)25.3部をナトリウム塩として得た。
水250部に上記合成例4の(工程2)で得られた式(40)で表される化合物を含むウェットケーキ65部を25%水酸化ナトリウム水溶液の添加によりpH7~8として溶解した。この溶液にレオコールRTMTD90(0.10部)を加えた後、15~25℃で塩化シアヌル3.8部を添加した。添加後、炭酸ナトリウム水溶液の添加によりpH値を5~6に保持しながら15~25℃で2時間撹拌した。次にこの反応液を60~65℃に加熱し、炭酸ナトリウム水溶液の添加によりpH値を6~7に保持しながら5時間撹拌した。
次にピペラジン0.89部を添加した後、90~95℃に加熱し、炭酸ナトリウム水溶液の添加によりpH値を8~9に保持しながら16時間撹拌した。
得られた反応液を20~30℃まで冷却後、塩化ナトリウムの添加により塩析し、析出した固体を濾過分取してウェットケーキを得た。このウェットケーキを水400部に溶解した。この溶液にメタノール50部、次いで2-プロパノール800部を加え、30分間撹拌した。析出した固体を濾過分取することによりウェットケーキを得た。得られたウェットケーキを再度水200部に溶解し、2-プロパノール800部を添加し、析出した固体を濾過分取し、乾燥することにより、下記式(42)で表されるアゾ化合物(λmax:436nm)13.5部をナトリウム塩として得た。
[(A)インクの調製]
下記表11に記載した各成分を混合することにより、本発明及び比較用のインク組成物をそれぞれ得た後、0.45μmのメンブランフィルタで夾雑物を濾別することにより、試験用のインクを得た。このインクの調製をそれぞれ実施例1乃至4、及び比較例1とする。得られた本発明のインクは、貯蔵中、沈殿分離を生じることなく、また長期間の保存後においても物性の変化は生じなかった。
また、以下の各実施例及び比較例において、インクの調製にはイオン交換水を使用した。インクの調製時においては、各インクのpHを8~10に調整する目的で、適宜水酸化リチウムを用い、イオン交換水を加えることにより総量100部とした。
表中、色素(I)、(II)、(III)は、本発明のインク組成物中に含有される、色素(I)、色素(II)、及び色素(III)にそれぞれ対応する。各色素の欄は破線により上下に2分割されており、上欄に記載の括弧付きの番号は、本実施例中に記載の化合物の式番号に対応しており、下欄には用いた部数を記載した。また、色素欄以外の、水溶性有機溶剤、各添加剤等の欄中に記載の数字は、いずれも組成物中における部数を記載した。
なお、表中の略号は以下の意味を表す。
GLY:グリセリン
NMP:N-メチル-2-ピロリドン
IPA:イソプロパノール
BCTL:ブチルカルビトール
EDTA・2Na:エチレンジアミン四酢酸二ナトリウム
SURF:商品名サーフィノールRTM 日信化学社製
これらの化合物は国際公開第2007/077931号に開示された方法を追試することで、下記式(43)乃至(45)で表される化合物のナトリウム塩をそれぞれ得た。これらの色素を用いて表11に記載のインクを調製することで得たインクを比較例1とした。
上記の各実施例及び各比較例で得たそれぞれのインクを使用し、Canon社製インクジェットプリンタ、商品名「PIXUSRTM iP4500」により、光沢紙であるヒューレットパッカート社製、商品名「写真用紙アドバンストフォトペーパーRTM<高光沢>」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は、100%、80%、60%、40%、20%、10%濃度の6段階の階調が得られるように画像パターンを作り、濃黒色~淡黒色のグラデーションの記録物を得た。得られた記録物は印刷後24時間以上室温で乾燥させ、これを試験片として各種評価に用いた。
上記のようにして得た各試験片を2種類の耐オゾンガス性試験に用いた。
記録画像の測色は、いずれもGRETAG-MACBETH社製の測色機、商品名「SpectroEye」を用いて行った。測色する際は、いずれも濃度基準にDIN NB、視野角2°、光源D65の条件で行った。
耐オゾンガス性試験では、試験前の記録画像のブラック反射濃度Dk値が1.2~1.5の範囲にある階調部分を測色することにより測定した。具体的な試験方法は下記の通りである。
スガ試験機社製、商品名「オゾンウェザオメーター」に試験片を設置し、オゾン濃度10pm、湿度50%RH、温度23℃の条件下で24時間放置した。オゾン暴露前及び暴露後の各試験片の記録画像について、CIEのL*、a*、b*を測定し、下記式により色差ΔEを算出した。なお、下記計算式中、ΔL*、Δa*、及びΔb*は、それぞれ暴露前後のL*、a*、及びb*の差をそれぞれ意味する。
ΔE=(ΔL*2+Δa*2+Δb*2)1/2
試験結果は、以下の基準で評価を行った。オゾン暴露前後でのΔEが小さいものが試験前後の色変化が少なく優れた結果を表す。
評価結果を表12に示す。
A:ΔEが7.0未満
B:ΔEが7.0以上8.0未満
C:ΔEが8.0以上10.0未満
D:ΔEが10.0以上
スガ試験機社製、商品名「オゾンウェザオメーター」に試験片を設置し、オゾン濃度10pm、湿度50%RH、温度23℃の条件下で48時間放置した。オゾン暴露前及び暴露後の各試験片の記録画像について、CIEのL*、a*、b*を測定し、下記式により色差ΔEを算出した。なお、下記計算式中、ΔL*、Δa*、及びΔb*は、それぞれ暴露前後のL*、a*、及びb*の差をそれぞれ意味する。
評価結果を表12に示す。
A:ΔEが12.0未満
B:ΔEが12.0以上15.0未満
C:ΔEが15.0以上18.0未満
D:ΔEが18.0以上
具体的には、各実施例のインクは、比較例1のインクと比較してオゾンガスの暴露に対する色変化がいずれも少なく、耐オゾンガス性に優れる印刷画像を与えることが明らかである。
黒色の色相の品質を評価するため、印刷した各試験片の、彩度C*値を評価した。評価する際は上記測色システムを用いて、CILのL*、a*、b*を測色し、下記式を用いて算出した。
C*=(a*2+b*2)1/2
試験結果は、以下の基準で評価を行った。評価結果を表14に示す。C*値は小さい方(0に近い方)が無彩色で色味の無い高品質の黒色に近づくため優れる。
A:C*値が5未満
B:C*値が5以上8未満
C:C*値が8以上10未満
D:C*値が10以上
具体的には、比較例2乃至4のように、色素(I)、色素(II)のどちらか一方からなるインクや、比較例5のように、色素(I)と色素(II)との両者からなるインクでは、ニュートラルで且つ無彩な黒色の色相を与えず、黒色の品質としては不適切であることが明らかである。
一方、本発明の色素(I)、色素(II)、及び色素(III)を含有する各実施例のインクは、得られた彩度がいずれも5以下であり、より無彩色なブラックで高品位な黒色色相の記録画像を与えることが明らかである。
Claims (10)
- 色素(I)として、少なくとも1種類の下記式(1)で表される化合物若しくはその互変異性体、又はそれらの塩と、色素(II)として、少なくとも1種類の下記式(3)で表される化合物若しくはその互変異性体又はそれらの塩と、色素(III)として、少なくとも1種類の下記式(4)で表される化合物又はその塩と、を含有することを特徴とするインク組成物。
R1及びR2は、それぞれ独立に、水素原子;ハロゲン原子;シアノ基;カルボキシ基;スルホ基;スルファモイル基;N-アルキルアミノスルホニル基;N,N-ジアルキルアミノスルホニル基;N-フェニルアミノスルホニル基;ホスホ基;ニトロ基;アシル基;ウレイド基;C1-C4アルキル基;ヒドロキシ基又はC1-C4アルコキシ基で置換されたC1-C4アルキル基;C1-C4アルコキシ基;ヒドロキシ基、C1-C4アルコキシ基、スルホ基、及びカルボキシ基よりなる群から選択される少なくとも1種類の基で置換されたC1-C4アルコキシ基;又は、アシルアミノ基;を表し、
R3及びR4は、それぞれ独立に、水素原子;ハロゲン原子;シアノ基;カルボキシ基;スルホ基;ニトロ基;C1-C4アルキル基;C1-C4アルコキシ基;又は、ヒドロキシ基、C1-C4アルコキシ基、スルホ基、及びカルボキシ基よりなる群から選択される少なくとも1種類の基で置換されたC1-C4アルコキシ基;を表し、
nは0又は1であり、
基Aは下記式(2)で表される基である。]
R5は、シアノ基;カルボキシ基;C1-C4アルキル基;C1-C4アルコキシカルボニル基;又は、フェニル基;を表し、
R6、R7、及びR8は、それぞれ独立に、水素原子;ハロゲン原子;シアノ基;カルボキシ基;スルホ基;ニトロ基;C1-C4アルキル基;C1-C4アルコキシ基;ヒドロキシ基、C1-C4アルコキシ基、及びスルホ基よりなる群から選択される少なくとも1種類の基で置換されたC1-C4アルコキシ基;又は、アシルアミノ基;を表す。]
mは0又は1であり、
R101からR103は、それぞれ独立に、水素原子;スルホ基;又は、C1-C4アルコキシ基;を表し、
基Dは、1つ乃至3つのスルホ基で置換された、フェニル基又はナフチル基を表す。]
R201からR204は、それぞれ独立に、水素原子;又は、スルホ基で置換されたC1-C4アルコキシ基;を表す。] - 前記式(1)において、
ニトロ基の置換位置が、該ニトロ基が置換するベンゼン環上のアゾ基の置換位置を1位として4位であり、
基Aの置換位置が、該基Aが置換するベンゼン環上のアゾ基の置換位置を1位として4位であり、
nが1であり、
R1、R3、及びR7がスルホ基であり、
R2が水素原子であり、
R4が水素原子、塩素原子、又はスルホ基であり、
R5がカルボキシ基である請求項1に記載のインク組成物。 - 前記式(3)において、
mが1であり、
R101が水素原子又はスルホ基であり、
R102がC1-C4アルコキシ基であり、
R103が水素原子又はスルホ基であり、
基Dが、1つ又は2つのスルホ基で置換されたフェニル基、及び、3つのスルホ基で置換されたナフチル基のいずれかである請求項1又は2に記載のインク組成物。 - 前記式(4)において、
R201及びR202の少なくとも一方がスルホプロポキシ基であり、
R203及びR204の少なくとも一方がスルホプロポキシ基である請求項1乃至3のいずれか一項に記載のインク組成物。 - インク組成物中に含有する色素の総質量において、前記色素(I)の比率が10~80質量%であり、前記色素(II)の比率が10~80質量%であり、前記色素(III)の比率が10~40質量%である請求項1乃至4のいずれか一項に記載のインク組成物。
- 請求項1乃至5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、該インクの液滴を記録信号に応じて吐出させて被記録材に付着させることにより、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6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、多孔性白色無機物を含有するインク受容層を有するシートである請求項7に記載のインクジェット記録方法。
- 請求項1乃至5のいずれか一項に記載のインク組成物、又は、
請求項6乃至8のいずれか一項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1乃至5のいずれか一項に記載のインク組成物を含有する容器が装填されたインクジェットプリンタ。
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- 2011-06-24 JP JP2012522597A patent/JP5663575B2/ja active Active
- 2011-06-24 KR KR1020137000900A patent/KR101810272B1/ko active IP Right Grant
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EP2589630B1 (en) | 2014-09-24 |
CA2803909A1 (en) | 2012-01-05 |
JPWO2012002277A1 (ja) | 2013-08-22 |
CN103097471B (zh) | 2014-08-20 |
TW201219501A (en) | 2012-05-16 |
US20130288019A1 (en) | 2013-10-31 |
EP2589630A4 (en) | 2013-12-18 |
TWI504687B (zh) | 2015-10-21 |
US8741045B2 (en) | 2014-06-03 |
CA2803909C (en) | 2018-01-09 |
JP5663575B2 (ja) | 2015-02-04 |
EP2589630A1 (en) | 2013-05-08 |
CN103097471A (zh) | 2013-05-08 |
KR20130094287A (ko) | 2013-08-23 |
KR101810272B1 (ko) | 2017-12-18 |
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