WO2013141224A1 - 感熱記録材料 - Google Patents
感熱記録材料 Download PDFInfo
- Publication number
- WO2013141224A1 WO2013141224A1 PCT/JP2013/057755 JP2013057755W WO2013141224A1 WO 2013141224 A1 WO2013141224 A1 WO 2013141224A1 JP 2013057755 W JP2013057755 W JP 2013057755W WO 2013141224 A1 WO2013141224 A1 WO 2013141224A1
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- WO
- WIPO (PCT)
- Prior art keywords
- recording material
- heat
- sensitive recording
- mixture
- dihydroxydiphenylsulfone
- Prior art date
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- 239000000463 material Substances 0.000 title claims abstract description 72
- 239000000203 mixture Substances 0.000 claims abstract description 85
- -1 2,4'-dihydroxydiphenyl sulfone Chemical class 0.000 claims abstract description 79
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical compound C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- 238000000926 separation method Methods 0.000 claims abstract description 28
- 238000003860 storage Methods 0.000 claims abstract description 19
- 238000004040 coloring Methods 0.000 claims abstract description 10
- LROZSPADHSXFJA-UHFFFAOYSA-N 2-(4-hydroxyphenyl)sulfonylphenol Chemical compound C1=CC(O)=CC=C1S(=O)(=O)C1=CC=CC=C1O LROZSPADHSXFJA-UHFFFAOYSA-N 0.000 claims description 40
- 150000001875 compounds Chemical class 0.000 claims description 32
- KZTYYGOKRVBIMI-UHFFFAOYSA-N diphenyl sulfone Chemical compound C=1C=CC=CC=1S(=O)(=O)C1=CC=CC=C1 KZTYYGOKRVBIMI-UHFFFAOYSA-N 0.000 claims description 24
- 239000012752 auxiliary agent Substances 0.000 claims description 19
- 239000002243 precursor Substances 0.000 claims description 17
- YKWDWSGYZBURDA-UHFFFAOYSA-N 1-chloro-2-(4-chlorophenyl)sulfonylbenzene Chemical compound C1=CC(Cl)=CC=C1S(=O)(=O)C1=CC=CC=C1Cl YKWDWSGYZBURDA-UHFFFAOYSA-N 0.000 claims description 15
- GPAPPPVRLPGFEQ-UHFFFAOYSA-N 4,4'-dichlorodiphenyl sulfone Chemical compound C1=CC(Cl)=CC=C1S(=O)(=O)C1=CC=C(Cl)C=C1 GPAPPPVRLPGFEQ-UHFFFAOYSA-N 0.000 claims description 15
- 239000002904 solvent Substances 0.000 claims description 13
- 238000006460 hydrolysis reaction Methods 0.000 claims description 12
- 150000001491 aromatic compounds Chemical group 0.000 claims description 11
- 150000003839 salts Chemical class 0.000 claims description 10
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 8
- 229910052751 metal Chemical class 0.000 claims description 8
- 239000002184 metal Chemical class 0.000 claims description 8
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 claims description 8
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 7
- 125000000217 alkyl group Chemical group 0.000 claims description 6
- 238000004042 decolorization Methods 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 6
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 6
- WLTCCDHHWYAMCG-UHFFFAOYSA-N 2-phenylmethoxynaphthalene Chemical compound C=1C=C2C=CC=CC2=CC=1OCC1=CC=CC=C1 WLTCCDHHWYAMCG-UHFFFAOYSA-N 0.000 claims description 5
- MOZDKDIOPSPTBH-UHFFFAOYSA-N Benzyl parahydroxybenzoate Chemical compound C1=CC(O)=CC=C1C(=O)OCC1=CC=CC=C1 MOZDKDIOPSPTBH-UHFFFAOYSA-N 0.000 claims description 5
- 239000007983 Tris buffer Substances 0.000 claims description 5
- JTWBMEAENZGSOQ-UHFFFAOYSA-N 1,2-bis(phenoxymethyl)benzene Chemical compound C=1C=CC=C(COC=2C=CC=CC=2)C=1COC1=CC=CC=C1 JTWBMEAENZGSOQ-UHFFFAOYSA-N 0.000 claims description 4
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 claims description 4
- XVSRGZPKJKLORS-UHFFFAOYSA-N 1-(4-methylphenyl)sulfonyl-3-[4-[[4-[(4-methylphenyl)sulfonylcarbamoylamino]phenyl]methyl]phenyl]urea Chemical compound C1=CC(C)=CC=C1S(=O)(=O)NC(=O)NC(C=C1)=CC=C1CC(C=C1)=CC=C1NC(=O)NS(=O)(=O)C1=CC=C(C)C=C1 XVSRGZPKJKLORS-UHFFFAOYSA-N 0.000 claims description 4
- AGPLQTQFIZBOLI-UHFFFAOYSA-N 1-benzyl-4-phenylbenzene Chemical group C=1C=C(C=2C=CC=CC=2)C=CC=1CC1=CC=CC=C1 AGPLQTQFIZBOLI-UHFFFAOYSA-N 0.000 claims description 4
- OAGNKYSIOSDNIG-UHFFFAOYSA-N 1-methyl-3-[2-(3-methylphenoxy)ethoxy]benzene Chemical compound CC1=CC=CC(OCCOC=2C=C(C)C=CC=2)=C1 OAGNKYSIOSDNIG-UHFFFAOYSA-N 0.000 claims description 4
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 claims description 4
- YBTWCLGDRWCRPN-UHFFFAOYSA-N 2-hydroxy-4-(octoxycarbonylamino)benzoic acid Chemical class CCCCCCCCOC(=O)NC1=CC=C(C(O)=O)C(O)=C1 YBTWCLGDRWCRPN-UHFFFAOYSA-N 0.000 claims description 4
- XCSGHNKDXGYELG-UHFFFAOYSA-N 2-phenoxyethoxybenzene Chemical compound C=1C=CC=CC=1OCCOC1=CC=CC=C1 XCSGHNKDXGYELG-UHFFFAOYSA-N 0.000 claims description 4
- YFHKLSPMRRWLKI-UHFFFAOYSA-N 2-tert-butyl-4-(3-tert-butyl-4-hydroxy-5-methylphenyl)sulfanyl-6-methylphenol Chemical compound CC(C)(C)C1=C(O)C(C)=CC(SC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 YFHKLSPMRRWLKI-UHFFFAOYSA-N 0.000 claims description 4
- HXIQYSLFEXIOAV-UHFFFAOYSA-N 2-tert-butyl-4-(5-tert-butyl-4-hydroxy-2-methylphenyl)sulfanyl-5-methylphenol Chemical compound CC1=CC(O)=C(C(C)(C)C)C=C1SC1=CC(C(C)(C)C)=C(O)C=C1C HXIQYSLFEXIOAV-UHFFFAOYSA-N 0.000 claims description 4
- MQWCQFCZUNBTCM-UHFFFAOYSA-N 2-tert-butyl-6-(3-tert-butyl-2-hydroxy-5-methylphenyl)sulfanyl-4-methylphenol Chemical compound CC(C)(C)C1=CC(C)=CC(SC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O MQWCQFCZUNBTCM-UHFFFAOYSA-N 0.000 claims description 4
- MTMKZABGIQJAEX-UHFFFAOYSA-N 4,4'-sulfonylbis[2-(prop-2-en-1-yl)phenol] Chemical compound C1=C(CC=C)C(O)=CC=C1S(=O)(=O)C1=CC=C(O)C(CC=C)=C1 MTMKZABGIQJAEX-UHFFFAOYSA-N 0.000 claims description 4
- ZTILAOCGFRDHBH-UHFFFAOYSA-N 4-(4-propan-2-yloxyphenyl)sulfonylphenol Chemical compound C1=CC(OC(C)C)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 ZTILAOCGFRDHBH-UHFFFAOYSA-N 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 claims description 4
- ZYZXGWGQYNTGAU-UHFFFAOYSA-N dibenzyl oxalate Chemical compound C=1C=CC=CC=1COC(=O)C(=O)OCC1=CC=CC=C1 ZYZXGWGQYNTGAU-UHFFFAOYSA-N 0.000 claims description 4
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- 125000001424 substituent group Chemical group 0.000 claims description 4
- YROXIXLRRCOBKF-UHFFFAOYSA-N sulfonylurea Chemical class OC(=N)N=S(=O)=O YROXIXLRRCOBKF-UHFFFAOYSA-N 0.000 claims description 4
- QCZZSANNLWPGEA-UHFFFAOYSA-N 1-(4-phenylphenyl)ethanone Chemical group C1=CC(C(=O)C)=CC=C1C1=CC=CC=C1 QCZZSANNLWPGEA-UHFFFAOYSA-N 0.000 claims description 3
- VETPHHXZEJAYOB-UHFFFAOYSA-N 1-n,4-n-dinaphthalen-2-ylbenzene-1,4-diamine Chemical compound C1=CC=CC2=CC(NC=3C=CC(NC=4C=C5C=CC=CC5=CC=4)=CC=3)=CC=C21 VETPHHXZEJAYOB-UHFFFAOYSA-N 0.000 claims description 3
- MOPBWASVAUDDTC-UHFFFAOYSA-N 4-[2-(3,4-dimethylphenyl)ethyl]-1,2-dimethylbenzene Chemical compound C1=C(C)C(C)=CC=C1CCC1=CC=C(C)C(C)=C1 MOPBWASVAUDDTC-UHFFFAOYSA-N 0.000 claims description 3
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 3
- QWHCTYYBLDCYIT-UHFFFAOYSA-N bis[(4-chlorophenyl)methyl] oxalate Chemical compound C1=CC(Cl)=CC=C1COC(=O)C(=O)OCC1=CC=C(Cl)C=C1 QWHCTYYBLDCYIT-UHFFFAOYSA-N 0.000 claims description 3
- FPFZBTUMXCSRLU-UHFFFAOYSA-N bis[(4-methylphenyl)methyl] oxalate Chemical compound C1=CC(C)=CC=C1COC(=O)C(=O)OCC1=CC=C(C)C=C1 FPFZBTUMXCSRLU-UHFFFAOYSA-N 0.000 claims description 3
- RQAQWBFHPMSXKR-UHFFFAOYSA-N n-(4-chlorophenyl)-3-(phosphonooxy)naphthalene-2-carboxamide Chemical compound OP(O)(=O)OC1=CC2=CC=CC=C2C=C1C(=O)NC1=CC=C(Cl)C=C1 RQAQWBFHPMSXKR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- OYQYHJRSHHYEIG-UHFFFAOYSA-N ethyl carbamate;urea Chemical compound NC(N)=O.CCOC(N)=O OYQYHJRSHHYEIG-UHFFFAOYSA-N 0.000 claims description 2
- 238000001953 recrystallisation Methods 0.000 claims description 2
- ASLNDVUAZOHADR-UHFFFAOYSA-N 2-butyl-3-methylphenol Chemical compound CCCCC1=C(C)C=CC=C1O ASLNDVUAZOHADR-UHFFFAOYSA-N 0.000 claims 1
- 229940125773 compound 10 Drugs 0.000 claims 1
- ZLVXBBHTMQJRSX-VMGNSXQWSA-N jdtic Chemical compound C1([C@]2(C)CCN(C[C@@H]2C)C[C@H](C(C)C)NC(=O)[C@@H]2NCC3=CC(O)=CC=C3C2)=CC=CC(O)=C1 ZLVXBBHTMQJRSX-VMGNSXQWSA-N 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims 1
- IBRQUKZZBXZOBA-UHFFFAOYSA-N 1-chloro-3-(3-chlorophenyl)sulfonylbenzene Chemical compound ClC1=CC=CC(S(=O)(=O)C=2C=C(Cl)C=CC=2)=C1 IBRQUKZZBXZOBA-UHFFFAOYSA-N 0.000 abstract description 4
- 150000003457 sulfones Chemical class 0.000 abstract description 3
- 239000011369 resultant mixture Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 44
- 239000006185 dispersion Substances 0.000 description 27
- 239000000975 dye Substances 0.000 description 27
- 239000010410 layer Substances 0.000 description 27
- 238000000034 method Methods 0.000 description 26
- 238000011156 evaluation Methods 0.000 description 20
- 230000035945 sensitivity Effects 0.000 description 20
- 239000000126 substance Substances 0.000 description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000004014 plasticizer Substances 0.000 description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 14
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 10
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 10
- 239000000047 product Substances 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- 238000003786 synthesis reaction Methods 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 238000011161 development Methods 0.000 description 7
- 235000014113 dietary fatty acids Nutrition 0.000 description 7
- 239000000194 fatty acid Substances 0.000 description 7
- 229930195729 fatty acid Natural products 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 229920001577 copolymer Polymers 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 6
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000002270 dispersing agent Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 description 5
- 235000011121 sodium hydroxide Nutrition 0.000 description 5
- 239000007858 starting material Substances 0.000 description 5
- 239000004094 surface-active agent Substances 0.000 description 5
- 229920003169 water-soluble polymer Polymers 0.000 description 5
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
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- 239000004372 Polyvinyl alcohol Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
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- 230000007062 hydrolysis Effects 0.000 description 4
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- 239000007788 liquid Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000005995 Aluminium silicate Substances 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 235000012211 aluminium silicate Nutrition 0.000 description 3
- 239000003945 anionic surfactant Substances 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 125000003963 dichloro group Chemical group Cl* 0.000 description 3
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 3
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Natural products C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000011256 inorganic filler Substances 0.000 description 3
- 229910003475 inorganic filler Inorganic materials 0.000 description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 3
- 239000012046 mixed solvent Substances 0.000 description 3
- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 description 3
- 239000012766 organic filler Substances 0.000 description 3
- 229940044654 phenolsulfonic acid Drugs 0.000 description 3
- 235000021317 phosphate Nutrition 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229940037312 stearamide Drugs 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- PFANXOISJYKQRP-UHFFFAOYSA-N 2-tert-butyl-4-[1-(5-tert-butyl-4-hydroxy-2-methylphenyl)butyl]-5-methylphenol Chemical compound C=1C(C(C)(C)C)=C(O)C=C(C)C=1C(CCC)C1=CC(C(C)(C)C)=C(O)C=C1C PFANXOISJYKQRP-UHFFFAOYSA-N 0.000 description 2
- PRMDDINQJXOMDC-UHFFFAOYSA-N 4-[4,4-bis(5-cyclohexyl-4-hydroxy-2-methylphenyl)butan-2-yl]-2-cyclohexyl-5-methylphenol Chemical compound C=1C(C2CCCCC2)=C(O)C=C(C)C=1C(C)CC(C=1C(=CC(O)=C(C2CCCCC2)C=1)C)C(C(=CC=1O)C)=CC=1C1CCCCC1 PRMDDINQJXOMDC-UHFFFAOYSA-N 0.000 description 2
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- ZCTQGTTXIYCGGC-UHFFFAOYSA-N Benzyl salicylate Chemical compound OC1=CC=CC=C1C(=O)OCC1=CC=CC=C1 ZCTQGTTXIYCGGC-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 2
- PMGCQNGBLMMXEW-UHFFFAOYSA-N Isoamyl salicylate Chemical compound CC(C)CCOC(=O)C1=CC=CC=C1O PMGCQNGBLMMXEW-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical class [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 150000001447 alkali salts Chemical class 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 125000001664 diethylamino group Chemical group [H]C([H])([H])C([H])([H])N(*)C([H])([H])C([H])([H])[H] 0.000 description 2
- BQGDDMMXPRJQHZ-UHFFFAOYSA-N dimethyl 3-hydroxybenzene-1,2-dicarboxylate Chemical compound COC(=O)C1=CC=CC(O)=C1C(=O)OC BQGDDMMXPRJQHZ-UHFFFAOYSA-N 0.000 description 2
- VAYGXNSJCAHWJZ-UHFFFAOYSA-N dimethyl sulfate Chemical compound COS(=O)(=O)OC VAYGXNSJCAHWJZ-UHFFFAOYSA-N 0.000 description 2
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 description 2
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 229920001600 hydrophobic polymer Polymers 0.000 description 2
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 2
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 2
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Images
Classifications
-
- 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
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/333—Colour developing components therefor, e.g. acidic compounds
- B41M5/3333—Non-macromolecular compounds
- B41M5/3335—Compounds containing phenolic or carboxylic acid groups or metal salts thereof
- B41M5/3336—Sulfur compounds, e.g. sulfones, sulfides, sulfonamides
-
- 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
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/337—Additives; Binders
- B41M5/3375—Non-macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C315/00—Preparation of sulfones; Preparation of sulfoxides
- C07C315/04—Preparation of sulfones; Preparation of sulfoxides by reactions not involving the formation of sulfone or sulfoxide groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C317/00—Sulfones; Sulfoxides
- C07C317/16—Sulfones; Sulfoxides having sulfone or sulfoxide groups and singly-bound oxygen atoms bound to the same carbon skeleton
- C07C317/22—Sulfones; Sulfoxides having sulfone or sulfoxide groups and singly-bound oxygen atoms bound to the same carbon skeleton with sulfone or sulfoxide groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/04—Direct thermal recording [DTR]
Definitions
- the present invention relates to a heat-sensitive recording material used in facsimiles, printers, and the like, and more particularly to a low-cost heat-sensitive recording material with improved color development and image storability.
- the heat-sensitive recording material used in the heat-sensitive recording system has many excellent characteristics such as high whiteness, appearance and feel close to plain paper, and good recording suitability such as coloring sensitivity.
- a colorless or light-colored electron-donating dye precursor particularly a leuco dye
- an acidic developer such as a phenolic compound
- the reactivity of the dye precursor which is an electron-donating compound is high. It has the property of being high.
- 2,4′-dihydroxydiphenylsulfone is relatively inferior in record storability, is relatively difficult to produce, has a small production volume, and a high production cost.
- 4,4′-dihydroxydiphenyl sulfone has a relatively low basic performance as a heat-sensitive recording material, but has good recording storability.
- it since it has been conventionally used as a raw material for polysulfone or the like, it is relatively easy to produce and is manufactured in large quantities, and the manufacturing cost is low. For this reason, an invention in which the weight ratio of 4,4′-dihydroxydiphenylsulfone is increased and used for a heat-sensitive recording material is also disclosed (see, for example, Patent Documents 2 and 3).
- 4,4′-dihydroxydiphenylsulfone is produced in a weight ratio of, for example, 80 to 99.9%, and by-product 2,4′-dihydroxydiphenylsulfone is, for example, 0.1 to 20%.
- the weight ratio of 2,4′-dihydroxydiphenylsulfone, which is a by-product is as small as possible. Thus, it is usual to optimize and set each condition such as reaction.
- the dihydroxydiphenylsulfone mixture produced by the above-described process is used. 2,4′-dihydroxydiphenylsulfone or 4,4′-dihydroxydiphenylsulfone is separated from the product, and then the separated product is added and mixed so that the desired weight ratio is obtained. Don't be.
- This manufacturing process is shown in FIG. Conventionally, the dihydroxydiphenyl sulfone mixture produced in this way has been used for heat-sensitive recording materials.
- 2,4′-dihydroxydiphenyl sulfone and 4,4′-dihydroxydiphenyl sulfone have properties that the solubility in the solvent used for the separation of both is quite close. Therefore, in order to improve each purity, it was necessary to go through a complicated separation process in which pH adjustment or the like is repeated or the separation process is repeated.
- 2,4′-dihydroxydiphenylsulfone is obtained at a high concentration.
- a treatment for increasing the concentration from a mixture having a weight ratio of only 0.1 to 0.2% must be performed. This treatment required considerable labor and time, and caused a high manufacturing cost of the heat-sensitive recording material using 2,4′-dihydroxydiphenylsulfone at a high weight ratio.
- an invention for producing 4,4′-dichlorodiphenylsulfone by reacting with a starting material such as dialkyl sulfate or chlorobenzene is disclosed.
- 2,4′-dichlorodiphenylsulfone is synthesized as a by-product, and the resulting product becomes an isomer mixture, and further, this isomer mixture is hydrolyzed to form a 4-step reaction. It is disclosed that a mixture of 4′-dihydroxydiphenylsulfone and 2,4′-dihydroxydiphenylsulfone is produced (see Patent Document 7).
- the present invention provides an excellent heat-sensitive recording material that has a relatively large amount of 2,4′-dihydroxydiphenylsulfone and has excellent color developability and storage stability, and can be obtained at a low cost by a relatively simple production process. The issue is to provide.
- the present invention relates to a heat-sensitive recording material in which a coloring layer containing a colorless or light-colored dye precursor and a developer is provided on a support, the developer comprising 2,4′-dihydroxydiphenylsulfone And 4,4′-dihydroxydiphenyl sulfone, and the weight ratio of 2,4′-dihydroxydiphenyl sulfone to 4,4′-dihydroxydiphenyl sulfone is more than 50/50 and not more than 95/5 Further, the 2,4′-dihydroxydiphenyl sulfone and the 4,4′-dihydroxydiphenyl sulfone contain 2,4′-dichlorodiphenyl sulfone and 4,4′-dichlorodiphenyl sulfone.
- a separation step for obtaining a second mixture having an increased weight ratio of the 2,4′-dichlorodiphenylsulfone from the first mixture and the second mixture are reacted.
- a heat-sensitive recording material characterized in that Here, it is preferable that the weight ratio is substantially determined through the series of steps. Further, it is preferable that the separation step includes a crystal precipitation step.
- the weight ratio of 2,4′-dichlorodiphenylsulfone to 4,4′-dichlorodiphenylsulfone is in the range of more than 50/50 and not more than 95/5 by a single separation. It is preferable to enter. Moreover, it is preferable that the reaction for obtaining the third mixture is a hydrolysis reaction. The reaction for obtaining the third mixture is preferably a hydrolysis reaction performed by adding an alkali. Moreover, it is preferable that the said reaction process is what adjusts pH after a hydrolysis reaction, and obtains a 3rd mixture. Moreover, it is preferable that the said post-processing process performs a decoloring purification by recrystallizing using a solvent.
- formula (I) Trisphenol compound represented by the following formula (I) (Wherein R 1 represents an alkyl group or cyclohexyl group having 4 or less carbon atoms, and R 2 represents an alkyl
- the auxiliary agent (C) is represented by the following formula (III) or (IV): (Wherein X and Y represent aromatic compound residues, ⁇ represents an aromatic compound residue having a valence of 2 or more, n represents an integer of 2 or more, and each residue is a substituent. May be included.) (In the formula, Z and Y represent aromatic compound residues, ⁇ represents an aromatic compound residue having a valence of 2 or more, n represents an integer of 2 or more, and each residue is a substituent. May be included.) It is preferable that it is a urea urethane compound shown by these.
- the auxiliary agent (C) is represented by the following formula (V) It is preferable that it is a urea urethane compound shown by these.
- a dihydroxydiphenylsulfone mixture in which the weight ratio of 2,4′-dihydroxydiphenylsulfone is larger than the weight ratio of 4,4′-dihydroxydiphenylsulfone is used as a color developing layer developer. It can be manufactured at a low cost by a relatively simple manufacturing process. As a result, it is possible to provide a high-performance thermosensitive recording material at a low cost that has excellent color developability including color density and color sensitivity, and has excellent image storage stability including loss of recording due to plasticizer and background fogging. It becomes possible. In particular, the overall manufacturing process is simpler, despite the two-step process of separation and reaction, which is likely to be costly.
- the heat-sensitive recording material of the present invention was obtained by separating 2,4′-dihydroxydiphenylsulfone and 4,4′-dihydroxydiphenylsulfone, and then adding and mixing them to the target weight ratio. Although the reason is unclear compared to the case where the product is used as a developer, a material having better performance as a heat-sensitive recording material can be obtained.
- FIG. 1 is a conceptual diagram showing a schematic flow of a method for producing a developer used in the present invention.
- FIG. 2 is a conceptual diagram showing a schematic flow of a conventional method for producing a developer containing dihydroxydiphenylsulfone.
- the heat-sensitive recording material of the present invention is a coloring material containing a colorless or light-colored dye precursor, typically a leuco dye, on a support such as paper, and a developer that reacts by heating to develop the dye precursor.
- a layer is provided.
- the developer used in the present invention contains 2,4′-dihydroxydiphenylsulfone and 4,4′-dihydroxydiphenylsulfone, and the weight of 2,4′-dihydroxydiphenylsulfone and 4,4′-dihydroxydiphenylsulfone.
- the ratio is in the range of more than 50/50 and not more than 95/5.
- a heat-sensitive recording material having excellent basic performance as a heat-sensitive recording material such as color development sensitivity and a certain level of image storage stability can be obtained.
- by setting the weight ratio to 95/5 or less it is possible to reduce the need for labor and time for the separation of isomers, and to reduce the production cost. As a result, both the color developability and image storability of the thermosensitive recording material can be improved.
- This mixture can be obtained by the following production method.
- a schematic flow of the manufacturing method is shown in FIG.
- a mixture of dichlorodiphenylsulfone containing 2,4′-dichlorodiphenylsulfone and 4,4′-dichlorodiphenylsulfone (hereinafter referred to as a first mixture) is synthesized from a commercially available starting material by a synthesis process.
- a known reaction can be used for the synthesis reaction, and it is not particularly limited.
- a commercially available sulfur trioxide and dimethyl sulfate may be reacted to obtain a mixture of dimethyl pyrosulfate and sulfur trioxide, and this mixture may be reacted with chlorobenzene.
- a dehydration condensation reaction using 4-chlorobenzenesulfonic acid chloride and chlorobenzene may be used.
- 4,4′-dichlorodiphenylsulfone is usually synthesized at a ratio of about 90% and 2,4′-dichlorodiphenylsulfone at a ratio of about 10%. That is, more 2,4 ′ isomers are produced as compared to the normal case where the conventional method for producing dihydroxyphenylsulfone is optimized for the production of 4,4 ′ isomers. Therefore, it is relatively easy to increase the weight ratio of the 2,4 ′ body in subsequent processing.
- Isomeric separation in the dichloro form is relatively simple due to the large difference in solubility between 2,4′-dichlorodiphenyl sulfone and 4,4′-dichlorodiphenyl sulfone.
- a second mixture having an increased weight ratio of dichlorodiphenylsulfone can be obtained.
- the removal of 4,4′-dichlorodiphenyl sulfone is such that the weight ratio of 2,4′-dichlorodiphenyl sulfone to 4,4′-dichlorodiphenyl sulfone in the second mixture is 50 / It is preferable to carry out so as to be in the range of more than 50 and 95/5 or less.
- the second mixture is reacted to obtain a third mixture containing 2,4′-dihydroxydiphenylsulfone and 4,4′-dihydroxydiphenylsulfone.
- a known reaction can be used for the synthesis reaction, and it is not particularly limited.
- the second mixture is reacted using a hydrolysis reaction in the second reaction step to obtain a third mixture comprising 2,4′-dihydroxydiphenylsulfone and 4,4′-dihydroxydiphenylsulfone.
- the hydrolysis reaction may be performed by adding an alkali to the solvent and heating and pressurizing.
- the heating temperature is preferably 100 ° C to 300 ° C, more preferably 180 ° C to 250 ° C, and further preferably 200 ° C to 240 ° C.
- the alkali used in the reaction is not particularly limited, but sodium hydroxide, potassium hydroxide, and lithium hydroxide are preferable, and sodium hydroxide is particularly preferable.
- the solvent used in the reaction is preferably water, but an organic solvent or a mixed solvent of an organic solvent and water can also be used.
- Organic solvents used in the reaction include alkanols such as methanol, ethanol, isopropanol, and mixed alkanol water, chlorinated aliphatic solvents such as dichloromethane and dichloroethane, and chlorinated aromatics such as chlorobenzene and 0-dichlorobenzene. Group solvents can be used.
- alkanols such as methanol, ethanol, isopropanol, and mixed alkanol water
- chlorinated aliphatic solvents such as dichloromethane and dichloroethane
- chlorinated aromatics such as chlorobenzene and 0-dichlorobenzene.
- Group solvents can be used.
- the obtained crystals are dissolved in an aqueous caustic soda solution, pH is adjusted appropriately with sulfuric acid or hydrochloric acid, and the crystals are taken out sequentially. More preferably, a precipitate having a relatively high ratio of the 4,4 ′ isomer in the alkaline pH region is generated by adjusting the pH, and the precipitate may be removed by filtration. Further, when the filtrate is neutralized to the acidic side, precipitation occurs again, so this precipitation can be separated by filtration. Thus, a third mixture containing 2,4′-dihydroxydiphenyl sulfone and 4,4′-dihydroxydiphenyl sulfone can be obtained.
- the separation operation may be repeated a plurality of times, but it is usually sufficient to perform the separation operation once. This is because the separation operation is started when the weight ratio of the 2,4 ′ body is originally increased, for example, when the weight ratio is around 50/50. As a result, the weight ratio of 2,4′-dihydroxydiphenylsulfone can be further increased and can be easily adjusted within the range of the target weight ratio.
- a post-treatment step for decolorizing and purifying the third mixture is performed.
- recrystallization may be performed using a solvent, activated carbon or the like may be used for decolorization, or other decolorization methods may be used.
- the solvent used in the case of using a solvent may be any solvent that dissolves dihydroxydiphenylsulfone, but is preferably an alkanol, more preferably an alcohol such as methanol, ethanol, isopropanol, an alkanol water mixed solvent. It is kind. This makes it possible to use the mixture as a developer for the heat-sensitive recording material. Moreover, it is preferable to remove unnecessary substances such as unreacted substances together with the coloring components.
- treatment conditions that can further remove a portion of 4,4′-dihydroxydiphenylsulfone with decolorization purification. This further increases the weight ratio of 2,4′-dihydroxydiphenylsulfone.
- a drying step may be added to the post-treatment step.
- the weight ratio of 2,4′-dihydroxydiphenylsulfone to 4,4′-dihydroxydiphenylsulfone in the color developing layer of the heat-sensitive recording material is substantially determined through the series of steps described above. preferable.
- substantially determined means that it does not include a case where 2,4′-dihydroxydiphenylsulfone produced separately is added and mixed later. Thereby, it becomes possible to manufacture a heat-sensitive recording material by a simple manufacturing method, and as a result, the manufacturing cost can be kept low.
- thermosensitive recording material As a whole There is a disadvantage in that the manufacturing cost increases. Therefore, it is more preferable to use it for the heat-sensitive recording material without passing through such an addition mixing step and the like, with the weight ratio of the isomers contained in the mixture obtained through the above series of steps.
- the weight ratio of 2,4′-dihydroxydiphenylsulfone is larger than the weight ratio of 4,4′-dihydroxydiphenylsulfone. Therefore, when used as a color developer for a heat-sensitive recording material, a heat-sensitive recording material having excellent color development sensitivity and whiteness can be obtained. There is also an improvement in image preservation. Unfortunately, the degree of improvement in image storability is somewhat inferior when compared to using a mixture in which the weight ratio of 4,4′-dihydroxydiphenylsulfone is greater than 2,4′-dihydroxydiphenylsulfone.
- a heat-sensitive recording material that is more excellent in image storability can be obtained by using an auxiliary agent described later in the color developing layer.
- the isomers are mainly separated from dichloro isomers having a large solubility difference, the separation is easy.
- conditions for removing a part of the 4,4 'body can be set even in the hydrolysis process and decolorization purification process, and a relatively large amount of the 2,4' body is produced in the reaction process for producing the original dichloro body.
- each of 2,4′-dihydroxydiphenylsulfone and 4,4′-dihydroxydiphenylsulfone is isolated and dried, and then added so as to obtain the desired weight ratio.
- the performance as a heat-sensitive recording material is superior to a heat-sensitive recording material using a developer obtained by blending. The reason is unknown, but it is presumed that excellent performance can be obtained because both are well mixed at the molecular level during reaction generation. This is because a mixture at the molecular level cannot be obtained even if the products obtained by isolating and drying both are physically mixed later. Further, since the weight ratio of 2,4′-dihydroxydiphenylsulfone can be changed and improved as necessary, it becomes easy to obtain a heat-sensitive recording material having better performance.
- 2,4′-dihydroxydiphenyl sulfone and 4,4′-dihydroxydiphenyl sulfone obtained by a reaction using a mixture containing 2,4′-dichlorodiphenyl sulfone and 4,4′-dichlorodiphenyl sulfone,
- This mixture does not contain impurities described in Patent Documents 5, 6 and the like. This is advantageous in terms of performance in obtaining a heat-sensitive recording material having improved color developability and image storage stability. Further, since the process of removing these impurities is not necessary for improving the performance, the manufacturing cost can be reduced.
- the mixing ratio of 2,4′-dihydroxydiphenylsulfone and 4,4′-dihydroxydiphenylsulfone is more than 50/50 and not more than 95/5 by weight. .
- this ratio exceeds 50/50, the color developability and the image storage stability can be improved in a well-balanced manner, and when the ratio is 95/5 or less, the balance between the performance and cost of the thermosensitive recording material is improved. More preferably, this ratio is 70/30 or more and 90/10 or less.
- the heat-sensitive recording material of the present invention has excellent color developability and superiority by using at least one compound selected from the following (A), (B), and (C) as an auxiliary agent in combination with a developer.
- the developer used in the present invention tends to have insufficient storage stability because the weight ratio of 4,4′-dihydroxydiphenylsulfone is small, but it becomes possible to improve this storage stability deficiency.
- 1,1,3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane 1,1,3-tris (2-ethyl-4-hydroxy-5-tert-butylphenyl) butane, 1,1,3-tris (2-methyl-4-hydroxy-5-cyclohexylphenyl) butane, etc. can be mentioned.
- 1,1,3-tris (2-methyl-4-hydroxy-5-t-butylphenyl) butane is, for example, a trade name: ADKARKLS DH-37 (in the formula (I), R 1 is t-butyl, R 2 Can be obtained from the market.
- 1,1,3-tris (2-methyl-4-hydroxy-5-cyclohexylphenyl) butane is, for example, trade name: ADKARKLS DH-43 (in the formula (I), R 1 is cyclohexyl, R 2 is methyl (Available from ADEKA Co., Ltd.).
- the diphenylsulfone bridged compound represented by the above formula (II) as the auxiliary agent (B) is a compound described in Japanese Patent No. 3913820 or WO97 / 16420, and examples of such a compound include trade name: D -90 (Nippon Soda Co., Ltd.) is available from the market.
- the auxiliary agent (C) has a molecular weight of 2000 or less, has a urea group and a urethane group in the molecular structure, and an aromatic compound residue is directly bonded to both ends of the urea group and the urethane group.
- the urea urethane compound are those described in Japanese Patent No. 3739282, Japanese Patent No. 3836867, and Japanese Patent No. 3836868. Specific examples include compounds such as E-1 to E-43 described in Japanese Patent No. 3739282. Of these, compounds represented by the above formula (III) or the above formula (IV) are preferred.
- UU a compound having a compound represented by the formula (V) as a main component, manufactured by Chemipro Kasei Co., Ltd.
- the amount of the developer used for the dye precursor is not particularly limited, but it is preferably used in the range of 5 to 500% by mass with respect to the dye precursor. Further, it is more preferable to use within the range of 20 to 300% by mass. When the amount is 5% by mass or more, the coloring property of the dye precursor is further improved, and when it is 500% by mass or less, an excessive and unreacted developer is hardly left, which is economically preferable. Further, the amount of the auxiliary agent used with respect to the developer is not particularly limited, but it is preferably used within the range of 2 to 50% by mass, and more preferably within the range of 5 to 40% by mass with respect to the developer. It is more preferable.
- the effect of improving color developability and image storage stability is more clearly recognized at 2% by mass or more, and use at 50% by mass or less is more preferable because a sufficient effect can be obtained. Furthermore, if necessary, other color developers, sensitizers, storage stabilizers, dispersants, fillers, lubricants, ultraviolet absorbers, and the like can be used at any ratio.
- the leuco dye which is an example of a colorless or light dye precursor used in the present invention, is a known compound used in pressure-sensitive recording materials and heat-sensitive recording materials, and is not particularly limited. For example, the following are mentioned.
- Triarylmethane compounds 3,3-bis (p-dimethylaminophenyl) -6-dimethylaminophthalide (crystal violet lactone), 3,3-bis (p-dimethylaminophenyl) phthalide, 3- ( p-dimethylaminophenyl) -3- (1,2-dimethylindol-3-yl) phthalide, 3- (p-dimethylaminophenyl) -3- (2-methylindol-3-yl) phthalide, 3- ( p-dimethylaminophenyl) -3- (2-phenylindol-3-yl) phthalide, 3,3-bis (1,2-dimethylindol-3-yl) -5-dimethylamin
- one kind of the colorless or light dye precursor may be used, or two or more kinds may be used in combination as necessary.
- the colorant, auxiliary agent, or colorless or light-colored dye precursor used in the heat-sensitive recording material of the present invention may be selected from water-soluble polymers and surfactants. Good. Specific examples of these dispersants are described below.
- the water-soluble polymer include, for example, PVA, sulfonic acid-modified PVA, polyacrylamide, polymethacrylamide, polyacrylic acid, polymethacrylic acid, polyethylene oxide, polypropylene oxide, polyvinylpyrrolidone, and copolymers thereof.
- examples thereof include synthetic polymers, cellulose polymers such as methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, and carboxymethyl cellulose sodium salt. Of these, PVA derivatives and cellulose derivatives are preferable, and modified PVA and hydroxypropylmethylcellulose are more preferable.
- specific examples of the surfactant will be given.
- anionic surfactants include fatty acid salts, alkyl sulfate esters, alkylssulfosuccinates, alkyl phosphates, polyoxyethylene alkyl sulfate esters, polyoxyethylene alkyl allyl sulfate esters, aromatic sulfonic acid derivatives.
- alkylbenzene sulfonic acid salts alkyl diphenyl ether disulfonic acid salts, alkyl naphthalene sulfonic acid salts, naphthalene sulfonic acid formalin condensate salts
- polycarboxylic acid derivatives for example, polymerization or copolymerization of various carboxyl group-containing monomers. Polymer, or a mixture thereof) and polyoxyethylene alkyl phosphate.
- Nonionic surfactants include polyoxyethylene alkyl ether, polyoxyethylene alkyl allyl ether, oxyethylene / oxypropylene block copolymer, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, Examples include glycerin fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene alkylamine, and alkyl alkanolamide.
- amphoteric surfactants include alkyl betaines, amine oxides, imidazolinium betaines, other polyoxyethylene alkyl ether triethanolamines, reactive anionic surfactants, and special polymer surfactants.
- anionic surfactants are preferred, and aromatic sulfonic acid derivatives and polycarboxylic acid derivatives are more preferred.
- aromatic sulfonic acid derivative a salt of naphthalene sulfonic acid formalin condensate can be more preferably raised.
- These dispersants may be used alone or in combination of two or more.
- the use ratio of the dispersant is preferably 0.5 to 50% by mass, more preferably 1 to 20% by mass, based on the colorless or light-colored dye precursor, developer or auxiliary agent. It is to be used within the range.
- any known additive is effectively used as necessary. These are described below.
- a heat-fusible substance (sensitizer) can be contained.
- the heat fusible substance preferably has a melting point of 60 ° C. to 180 ° C., and more preferably has a melting point of 80 ° C. to 140 ° C.
- heat-fusible substances include stearic acid amide, palmitic acid amide, N-methylol stearic acid amide, ⁇ -naphthylbenzyl ether, N-stearyl urea, N, N′-distearyl urea, ⁇ -naphthoic acid phenyl Ester, 1-hydroxy-2-naphthoic acid phenyl ester, 2- (p-methylbenzyloxy) naphthalene, 2-benzyloxynaphthalene, 1,4-dimethoxynaphthalene, 1-methoxy-4-benzyloxynaphthalene, N-stearoyl Urea, 4-benzylbiphenyl, 1,2-bis (3-methylphenoxy) ethane, 1,2-diphenoxyethane, 1-phenoxy-2- (4-chlorophenoxy) ethane, 1,2-bis (3 4-dimethylphenyl) ethane, 1,2-diphenoxymethylbenzen
- 4,4′-dimethoxybenzophenone, 4,4′-dichlorobenzophenone, 4,4′-difluorobenzophenone, diphenylsulfone, 4,4′-dichlorodiphenylsulfone, 4,4′-difluorodiphenylsulfone, 4,4 '-Dichlorodiphenyl disulfide, diphenylamine, 2-methyl-4-methoxydiphenylamine, N, N'-diphenyl-p-phenylenediamine, 1- (N-phenylamino) naphthalene, benzyl, 1,3-diphenyl-1, 3-propanedione or the like can be used.
- thermofusible substances include stearamide, diphenylsulfone, m-terphenyl, 4-benzylbiphenyl, 1,2-bis (3,4-dimethylphenyl) ethane, 2 -Benzyloxynaphthalene, 1,2-diphenoxymethylbenzene, 1,2-diphenoxyethane, 1,2-bis (3-methylphenoxy) ethane, oxalic acid dibenzyl ester, oxalic acid di (4-chlorobenzyl)
- esters di (4-methylbenzyl) oxalate ester, dibenzyl terephthalate, and 4-acetylbiphenyl.
- thermofusible substances may be used alone or in combination of two or more.
- the amount of use is not limited, but in order to obtain sufficient thermal response, it is preferably used in the range of 10 to 500% by weight, more preferably 20 to 300% by weight, based on the colorless or light-colored dye precursor. It is more preferable to use within the range.
- the developer is a commonly used electron-accepting substance, such as phenol derivatives, aromatic carboxylic acid derivatives or metal salts thereof, salicylic acid derivatives or metal salts thereof, N, N-diarylthiourea derivatives, sulfonylurea derivatives, etc.
- 2,2-bis (4-hydroxyphenyl) propane, 4-hydroxybenzoic acid benzyl ester, hydroxybenzoic acid ester oligomer, 4-n-octyloxycarbonylaminosalicylic acid or a metal thereof is particularly preferable as a developer.
- amino compound may be added to the dispersion composition as necessary for the purpose of improving the storage quality of the background and printing.
- the amino compound that can be added is a colorless or light-colored substance having at least one primary, secondary, or tertiary amino group. Examples thereof include aniline derivatives, heterocyclic compounds, hindered amine compounds and the like as described in WO00 / 14058.
- N-stearyl-N ′-(2-hydroxyphenyl) urea, N-stearyl-N ′-(3-hydroxyphenyl) urea, N-stearyl-N are used for improving background fogging and heat responsiveness.
- 4,4′-thiobis (2-methyl-6-tert-butylphenol), 4,4′-thiobis (3-methyl-6-tert-butylphenol), 2,2′-thiobis (6- t-butyl-4-methylphenol), 2,2′-methylenebis (4-methyl-6-tert-butylphenol), tris (2,6-dimethyl-4-tert-butyl-3-hydroxybenzyl) isocyanurate, 4-Benzyloxy-4 ′-(2-methylglycidyloxy) diphenylsulfone, 4,4′-diglycidyloxydiphenylsulfone, sodium-2,2′-methylenebis (4,6-di-t-butylphenyl) phosphate N, N′-di-2-naphthyl-p-phenylenediamine.
- the heat-sensitive recording material of the present invention is provided with a heat-sensitive recording layer for color development by heating on a support.
- a heat-sensitive recording layer for color development by heating on a support.
- the above developer, auxiliary agent, colorless or pale dye precursor such as leuco dye, and other heat fusible substance (sensitizer), storage stabilizer, etc. if necessary, A dispersion composition containing other components necessary for forming the heat-sensitive recording layer is prepared and mixed to prepare a coating solution.
- Preparation of the dispersion liquid of each component is carried out by using one or more kinds selected from the various compounds listed so far in an aqueous solution containing a compound having a dispersing ability such as a water-soluble polymer or a surfactant. It may be performed by pulverizing with, for example.
- the particle diameter of the dispersion of each of the developer, the auxiliary agent, and the colorless or light dye precursor dispersion is preferably in the range of 0.1 to 10 ⁇ m, more preferably around 1 ⁇ m.
- the coating solution is applied onto a support to form a heat sensitive recording layer.
- Examples of other components necessary for forming the heat-sensitive recording layer include pigments and binders.
- the pigment include diatomaceous earth, talc, kaolin, calcined kaolin, calcium carbonate, magnesium carbonate, titanium oxide, zinc oxide, silicon oxide, aluminum hydroxide, urea-formalin resin and the like.
- higher fatty acid metal salts such as zinc stearate and calcium stearate, and waxes such as paraffin, oxidized paraffin, polyethylene, oxidized polyethylene, stearamide, and castor wax can be used. .
- a dispersant such as sodium dioctylsulfosuccinate, an ultraviolet absorber such as benzophenone or benzotriazole, a fading inhibitor, a surfactant, a fluorescent dye, or the like can be contained as necessary.
- binder examples include starches, hydroxyethyl cellulose, methyl cellulose, carboxymethyl cellulose, gelatin, casein, polyvinyl alcohol, modified polyvinyl alcohol, sodium polyacrylate, acrylamide / acrylate ester copolymer, acrylamide / acrylate ester / methacrylic acid.
- Water-soluble binder such as ternary copolymer, alkali salt of styrene / maleic anhydride copolymer, alkali salt of ethylene / maleic anhydride copolymer, and styrene / butadiene copolymer, maleic acid-modified propylene copolymer
- latex water-insoluble binders such as acrylonitrile / butadiene copolymer and methyl acrylate / butadiene copolymer.
- thermosensitive recording layer As the support for the heat-sensitive recording layer, paper is mainly used, and in addition to paper, various woven fabrics, non-woven fabrics, synthetic resin films, laminated paper, synthetic paper, metal foil, or composite sheets combining these are used depending on the purpose. Can be used.
- the thermosensitive recording layer may be composed of a single layer or a plurality of layers. For example, each color forming component may be contained one by one to form a multilayer structure. Further, on this thermosensitive recording layer, a protective layer composed of one or a plurality of layers mainly composed of a water-soluble polymer, a hydrophobic polymer, an inorganic filler, an organic filler, etc. may be provided.
- an intermediate layer composed of one layer or a plurality of layers mainly composed of an inorganic filler such as calcined kaolin, an organic filler, a polymer having a hollow structure, or the like may be provided.
- a protective layer composed of one or more layers mainly composed of a water-soluble polymer, a hydrophobic polymer, an inorganic filler, an organic filler and the like may be provided under the support of the heat-sensitive recording layer.
- This heat-sensitive recording layer can be obtained by coating and drying on a support a coating solution in which each aqueous dispersion obtained by pulverizing each color forming component or other components and a binder or the like are mixed.
- the coating amount of the coating solution is preferably in the range of 1 to 15 g / m 2 when the coating solution is dried.
- thermal head was printed on thermal recording paper under the conditions of KJT-256-8MGF1 manufactured by Kyocera, applied voltage of 24V, and pulse width of 1.5 msec.
- the color density of the print was measured with a Macbeth optical densitometer RD918. Evaluation criteria are described in footnotes in Table 1. ⁇ Plasticizer resistance>
- a moisture resistance test was performed using the prepared thermal recording paper. The test was conducted by leaving the thermal recording paper in an atmosphere of 40 ° C. and 90% relative humidity for 24 hours. The whiteness of the unprinted portion (background) before and after the moisture resistance test was measured, and the improvement effect of the moisture resistance background was evaluated from the amount of change. Evaluation criteria are described in footnotes in Table 1. ⁇ Adjustment of dispersion>
- a mixture of the following composition is pulverized and dispersed using a sand grinder so that the average particle size is 1 ⁇ m or less to prepare a dispersion, and a dye dispersion, a developer dispersion, and an auxiliary dispersion are prepared. did.
- composition for preparing dye dispersion ⁇ Leuco dye 52.5g ⁇ Product name: Gocelan L3266 (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) 5.38% aqueous solution 97.5 g (The leuco dye content of the resulting dye dispersion is 35%)
- Composition for preparing developer dispersion ⁇ Dihydroxydiphenylsulfone mixture 60g ⁇ Product name: Gocelan L3266 (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) 5.38% aqueous solution 30 g ⁇ Distilled water 60g (The resulting developer dispersion has a dihydroxydiphenylsulfone mixture content of 40%)
- Composition for preparing auxiliary dispersion ⁇ Auxiliary agent 60g -Product name Gocelan L3266 (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) 5.38% aqueous solution 30 g ⁇ Distilled water 60g (Aux
- a calcium carbonate dispersion was prepared as follows. 10 g of calcium carbonate (trade name Callite KT, manufactured by Shiraishi Calcium Co., Ltd.) was mixed with 30 g of water and stirred and dispersed with a magnetic stirrer to obtain a 25% calcium carbonate dispersion.
- 10 g of calcium carbonate (trade name Callite KT, manufactured by Shiraishi Calcium Co., Ltd.) was mixed with 30 g of water and stirred and dispersed with a magnetic stirrer to obtain a 25% calcium carbonate dispersion.
- the production process up to obtaining a mixture of 2,4'-dihydroxydiphenylsulfone and 4,4'-dihydroxydiphenylsulfone, which can be used as a color developer for heat-sensitive recording materials, is a total production process based on the difficulty of the process. Relative evaluation was made on four levels based on the length. When commercially available dihydroxydiphenylsulfone powder was used as a starting material, the time and the number of steps that would have been required for its production were estimated and added to the evaluation.
- a 35% dispersion of leuco dye; 3-dibutylamino-6-methyl-7-anilinofluorane (hereinafter referred to as ODB2) was prepared by the method described above.
- a thin aqueous caustic soda solution was added to this mixture and reacted at 220 ° C. under pressure for 4 hours.
- the unreacted dichloro compound is separated, and the precipitate formed by treating with a dilute sulfuric acid aqueous solution is filtered, washed with water and dried to give 2,4′-dihydroxydiphenylsulfone and 4,4′-dihydroxydiphenylsulfone.
- a mixture with was obtained.
- the resulting mixture was completely dissolved in 25% aqueous sodium hydroxide solution, and sulfuric acid was added thereto to adjust pH to remove a part of 4,4′-dihydroxydiphenylsulfone as a monosodium salt, and further neutralized with sulfuric acid.
- This coating liquid was applied onto a base paper having a weight of 50 g / m 2 with a bar coater, dried and then processed with a super calender to obtain a thermal paper.
- the coating amount at this time was 0.40 g / m 2 in terms of ODB2.
- the thermal sensitivity paper thus produced was evaluated for printing sensitivity, plasticizer resistance, and wetland skin covering resistance by the methods described above. The evaluation results are shown in Table 1.
- Example 1 the weight ratio of 2,4′-dihydroxydiphenylsulfone to 4,4′-dihydroxydiphenylsulfone is 80/20 by changing the reaction, purification, and separation conditions instead of BPS7 / 3.
- a thermal paper was produced in the same manner as in Example 1 except that a dihydroxydiphenylsulfone mixture (hereinafter referred to as BPS 8/2) was obtained and used.
- BPS 8/2 dihydroxydiphenylsulfone mixture
- the print sensitivity, plasticizer resistance, and wetland skin covering resistance of this thermal paper were evaluated, and the evaluation results are shown in Table 1.
- Example 1 instead of BPS 7/3, a dihydroxy diphenyl sulfone mixture in which the weight ratio of 2,4′-dihydroxydiphenyl sulfone to 4,4′-dihydroxydiphenyl sulfone is 90/10 (hereinafter referred to as BPS 9/1).
- a thermal paper was prepared in the same manner as in Example 1 except that it was obtained and used. The printing sensitivity, plasticizer resistance and wetland skin covering resistance of the produced thermal paper were evaluated, and the evaluation results are shown in Table 1.
- a 35% dispersion of leuco dye; 3-dibutylamino-6-methyl-7-anilinofluorane (ODB2) was prepared by the method described above.
- Auxiliary agent A 40% dispersion of trade name UU (manufactured by Chemipro Kasei Co., Ltd.) (hereinafter referred to as UU) was prepared by the method described above.
- the thermal paper was evaluated in the same manner as in Example 1 except that BPS7 / 3 was changed to 40 parts, BPS7 / 3 was changed to 30 parts, and UU was changed to 10 parts.
- the plasticizer properties and the wetland skin covering resistance were evaluated, and the evaluation results are shown in Table 1.
- Example 4 was the same as Example 4 except that BPS 9/1 was used instead of BPS 7/3.
- the printing sensitivity, plasticizer resistance and wetland skin covering resistance of the produced thermal paper were evaluated, and the evaluation results are shown in Table 1.
- Example 4 a thermal paper was prepared in the same manner as in Example 4 except that the product name D-90 (manufactured by Nippon Soda Co., Ltd.) was used instead of UU.
- the print sensitivity, plasticizer resistance, and wetland skin covering resistance of this thermal paper were evaluated, and the evaluation results are shown in Table 1.
- thermal paper was produced in the same manner as in Example 4 except that the trade name DH43 (manufactured by ADEKA Co., Ltd.) was used instead of UU.
- the print sensitivity, plasticizer resistance, and wetland skin covering resistance of this thermal paper were evaluated, and the evaluation results are shown in Table 1.
- Example 4 a thermal paper was prepared in the same manner as in Example 4 except that the amount of BPS 7/3 was 29 parts and the amount of UU was 11 parts. The print sensitivity, plasticizer resistance, and wetland skin covering resistance of this thermal paper were evaluated, and the evaluation results are shown in Table 1. [Comparative Example 1]
- Example 1 in place of BPS7 / 3, a dihydroxydiphenylsulfone mixture in which the weight ratio of 2,4′-dihydroxydiphenylsulfone and 4,4′-dihydroxydiphenylsulfone is 30/70 (hereinafter referred to as BPS3 / 7).
- a thermal paper was produced in the same manner as in Example 1 except that was used. The print sensitivity, plasticizer resistance, and wetland skin covering resistance of this thermal paper were evaluated, and the evaluation results are shown in Table 1. [Comparative Example 2]
- Example 1 In Example 1, in place of BPS 7/3, 2,4′-dihydroxydiphenylsulfone powder (trade name 24 BPS, manufactured by Nikka Chemical Co., Ltd.) and 4,4′-dihydroxydiphenylsulfone powder (trade name 44 BPS, JP In Example 1, except that a powder mixture (hereinafter referred to as 24 bps / 44 bps 7/3) added and mixed so that the weight ratio between the two is 70/30 was used.
- a thermal paper was prepared in the same manner. The print sensitivity, plasticizer resistance, and wetland skin covering resistance of this thermal paper were evaluated, and the evaluation results are shown in Table 1. [Comparative Example 3]
- Example 1 in place of BPS 7/3, 2,4′-dihydroxydiphenylsulfone obtained by a dehydration reaction using sulfuric acid as a sulfonating agent in the conventional method using phenol and sulfonating agent, and 4,4, A thermal paper was prepared in the same manner as in Example 1 except that a dihydroxydiphenylsulfone mixture (hereinafter referred to as bps 2/8) having a weight ratio to 4'-dihydroxydiphenylsulfone of 20/80 was used.
- bps 2/8 dihydroxydiphenylsulfone mixture having a weight ratio to 4'-dihydroxydiphenylsulfone of 20/80 was used.
- the printing sensitivity, plasticizer resistance and wetland skin covering resistance of the produced thermal paper were evaluated, and the evaluation results are shown in Table 1.
- ⁇ The process difficulty is slightly small and the total manufacturing process is slightly short.
- delta The difficulty of a process is a little large and the total manufacturing process is a little long.
- ⁇ The difficulty of the process is large and the total manufacturing process is long.
- It can be used as a heat-sensitive recording material for various information devices employing a heat-sensitive recording method, for example, facsimiles, printers, and recorders.
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Abstract
Description
な方法と考えられていた。そのため、この特許文献7の製法は、従来はジヒドロキシジフェニルスルホン混合物を得る現実的な方法とは考えられていなかった。
(A)下記式(I)で示されるトリスフェノール系化合物
(B)下記式(II)で示されるジフェニルスルホン架橋型化合物
(C)分子量が2000以下であって分子構造中にウレア基とウレタン基を有し、かつ、該ウレア基と該ウレタン基のそれぞれの両端に芳香族化合物残基が直接結合しているウレアウレタン化合物
より選ばれる少なくとも一種の化合物を前記発色層に含有することは好ましい。
で示されるウレアウレタン化合物であることは好ましい。
(1)トリアリールメタン系化合物
3,3-ビス(p-ジメチルアミノフェニル)-6-ジメチルアミノフタリド(クリスタルバイオレットラクトン)、3,3-ビス(p-ジメチルアミノフェニル)フタリド、3-(p-ジメチルアミノフェニル)-3-(1,2-ジメチルインドール-3-イル)フタリド、3-(p-ジメチルアミノフェニル)-3-(2-メチルインドール-3-イル)フタリド、3-(p-ジメチルアミノフェニル)-3-(2-フェニルインドール-3-イル)フタリド、3,3-ビス(1,2-ジメチルインドール-3-イル)-5-ジメチルアミノフタリド、3,3-ビス(1,2-ジメチルインドール-3-イル)-6-ジメチルアミノフタリド、3,3-ビス(9 -エチルカルバゾール-3-イル)-5-ジメチルアミノフタリド、3,3-ビス(2-フェニルインドール-3-イル)-5-ジメチルアミノフタリド、3-p-ジメチルアミノフェニル-3-(1-メチルピロール-2-イル)-6-ジメチルアミノフタリド等。
(2)ジフェニルメタン系化合物
4,4-ビス-ジメチルアミノフェニルベンズヒドリルベンジルエーテル、N-ハロフェニルロイコオーラミン、N-2,4,5-トリクロロフェニルロイコオーラミン等。
(3)キサンテン系化合物
ローダミンBアニリノラクタム、ローダミンB-p-クロロアニリノラクタム、3-ジエチルアミノ-7-ジベンジルアミノフルオラン、3-ジエチルアミノ-7-オクチルアミノフルオラン、3-ジエチルアミノ-7-フェニルフルオラン、3-ジエチルアミノ-7-クロロフルオラン、3-ジエチルアミノ-6-クロロ-7-メチルフルオラン、3-ジエチルアミノ-7-(3,4-ジクロロアニリノ)フルオラン、3-ジエチルアミノ-7-(2-クロロアニリノ)フルオラン、3-ジエチルアミノ-6-メチル-7-アニリノフルオラン、3-(N-エチル-N-トリル)アミノ-6-メチル-7-アニリノフルオラン、3-ピペリジノ-6-メチル-7-アニリノフルオラン、3-(N-エチル-N-トリル)アミノ-6-メチル-7-フェネチルフルオラン、3-ジエチルアミノ-7-(4-ニトロアニリノ)フルオラン、3-ジブチルアミノ-6-メチル-7-アニリノフルオラン、3-(N-メチル-N-プロピル)アミノ-6-メチル-7-アニリノフルオラン、3-(N-エチル-N-イソアミル)アミノ-6-メチル-7-アニリノフルオラン、3-(N-メチル-N-シクロヘキシル)アミノ-6-メチル-7-アニリノフルオラン、3-(N-エチル-N-テトラヒドロフリル)アミノ-6-メチル-7-アニリノフルオラン、3-ジペンチルアミノ-6-メチル-7-アニリノフルオラン、3-(N-エチル-N-p-トリル)アミノ-6-メチル-7-アニリノフルオラン等。
(4)チアジン系化合物
ベンゾイルロイコメチレンブルー、p-ニトロベンゾイルロイコメチレンブルー等。
(5)スピロ系化合物
3-メチルスピロジナフトピラン、3-エチルスピロジナフトピラン、3,3-ジクロロスピロジナフトピラン、3-ベンジルスピロジナフトピラン、3-メチルナフト-(3-メトキシベンゾ)スピロピラン、3-プロピルスピロベンゾピラン等である。
また、3,6-ビス(ジメチルアミノ)フルオレン-9-スピロ-3'-(6'-ジメチルアミノフタリド)、3-ジエチルアミノ-6-ジメチルアミノフルオレン-9-スピロ-3'-(6'-ジメチルアミノフタリド)、3,6-ビス(ジエチルアミノ)フルオレン-9-スピロ-3'-(6'-ジメチルアミノフタリド)、3-ジブチルアミノ-6-ジメチルアミノフルオレン-9-スピロ-3'-(6'-ジメチルアミノフタリド)、3-ジブチルアミノ-6-ジエチルアミノフルオレン-9-スピロ-3'-(6'-ジメチルアミノフタリド)、3,6-ビス(ジメチルアミノ)フルオレン-9-スピロ-3'-(6'-ジエチルアミノフタリド)、3-ジエチルアミノ-6-ジメチルアミノフルオレン-9-スピロ-3'-(6'-ジエチルアミノフタリド)、3-ジブチルアミノ-6-ジメチルアミノフルオレン-9-スピロ-3'-(6'-ジエチルアミノフタリド)、3,6-ビス(ジエチルアミノ)フルオレン-9-スピロ-3'-(6'-ジエチルアミノフタリド)、3,6-ビス(ジメチルアミノ)フルオレン-9-スピロ-3'-(6'-ジブチルアミノフタリド)、3-ジブチルアミノ-6-ジエチルアミノフルオレン-9-スピロ-3'-(6'-ジエチルアミノフタリド)、3-ジエチルアミノ-6-ジメチルアミノフルオレン-9-スピロ-3'-(6'-ジブチルアミノフタリド)、3,3-ビス[2-(4-ジメチルアミノフェニル)-2-(4-メトキシフェニル)エテニル]-4,5,6,7,-テトラクロロフタリド等の近赤外に吸収領域を持つ化合物等である。
本発明の感熱記録材料の発色感度を向上させるために、熱可融性物質(増感剤)を含有させることができる。熱可融性物質は60℃~180℃の融点を有するものが好ましく、特に80℃~140℃の融点を有するものがより好ましい。熱可融性物質の例としては、ステアリン酸アミド、パルミチン酸アミド、N-メチロールステアリン酸アミド、β-ナフチルベンジルエーテル、N-ステアリルウレア、N,N′-ジステアリルウレア、β-ナフトエ酸フェニルエステル、1-ヒドロキシ-2-ナフトエ酸フェニルエステル、2-(p-メチルベンジルオキシ)ナフタレン、2-ベンジルオキシナフタレン、1,4-ジメトキシナフタレン、1-メトキシ-4-ベンジルオキシナフタレン、N-ステアロイルウレア、4-ベンジルビフェニル、1,2-ビス(3-メチルフェノキシ)エタン、1,2-ジフェノキシエタン、1-フェノキシ-2-(4-クロロフェノキシ)エタン、1,2-ビス(3,4-ジメチルフェニル)エタン、1,2-ジフェノキシメチルベンゼン、1,4-ブタンジオールフェニルエーテル、テレフタル酸ジベンジル、テレフタル酸ジメチル、m-ターフェニル、シュウ酸ジベンジルエステル、シュウ酸ジ(4-クロロベンジル)エステル、シュウ酸ジ(4-メチルベンジル)エステル、4-ヒドロキシ安息香酸メチル、4-ヒドロキシ安息香酸ベンジル、4-ヒドロキシ安息香酸(4'-クロロベンジル)、1,2-ビス(4'-ヒドロキシ安息香酸)エチル、1,5-ビス(4'-ヒドロキシ安息香酸)ペンチル、1,6-ビス(4'-ヒドロキシ安息香酸)ヘキシル等が挙げられる。さらに、4,4'-ジメトキシベンゾフェノン、4,4'-ジクロロベンゾフェノン、4,4'-ジフルオロベンゾフェノン、ジフェニルスルホン、4,4'-ジクロロジフェニルスルホン、4,4'-ジフルオロジフェニルスルホン、4,4'-ジクロロジフェニルジサルファイド、ジフェニルアミン、2-メチル-4-メトキシジフェニルアミン、N,N'-ジフェニル-p-フェニレンジアミン、1-(N-フェニルアミノ)ナフタレン、ベンジル、1,3-ジフェニル-1,3-プロパンジオン等を用いることができる。なかでも、特に好ましい熱可融性物質(増感剤)として、ステアリン酸アミド、ジフェニルスルホン、m-ターフェニル、4-ベンジルビフェニル、1,2-ビス(3,4-ジメチルフェニル)エタン、2-ベンジルオキシナフタレン、1,2-ジフェノキシメチルベンゼン、1,2-ジフェノキシエタン、1,2-ビス(3-メチルフェノキシ)エタン、シュウ酸ジベンジルエステル、シュウ酸ジ(4-クロロベンジル)エステル、シュウ酸ジ(4-メチルベンジル)エステル、テレフタル酸ジベンジル、4-アセチルビフェニルを挙げることができる。前記熱可融性物質は、単独でも、あるいは二種以上を混合して使用してもよい。その使用量は限定されないが、十分な熱応答性を得るためには、無色または淡色の染料前駆体に対して10~500質量%の範囲内で用いることが好ましく、さらに、20~300質量%の範囲内で用いることがより好ましい。
この感熱記録層は、各発色成分あるいはその他の成分を微粉砕して得られる各々の水性分散液とバインダー等を混合した塗布液を、支持体上に塗布、乾燥することにより得ることができる。塗布液の塗布量は、塗布液が乾燥した状態で1から15g/m2 の範囲内とすることが好ましい。
<印字感度>
<耐可塑剤性>
<耐湿地肌被り性>
<分散液の調整>
染料分散液作製用組成:
・ロイコ染料 52.5g
・商品名ゴーセランL3266(日本合成化学工業(株)製) 5.38%水溶液 97.5g
(得られる染料分散液のロイコ染料含有率は35%)
顕色剤分散液作製用組成:
・ジヒドロキシジフェニルスルホン混合物 60g
・商品名ゴーセランL3266(日本合成化学工業(株)製) 5.38%水溶液 30g
・蒸留水 60g
(得られる顕色剤分散液のジヒドロキシジフェニルスルホン混合物含有率は40%)
補助剤分散液作製用組成:
・補助剤 60g
・商品名ゴーセランL3266(日本合成化学工業(株)製)5.38%水溶液 30g
・蒸留水 60g
(得られる補助剤分散液の補助剤含有率は40%)
<製造法評価>
[比較例1]
[比較例2]
[比較例3]
注2)感熱記録紙を印字エネルギー0.51mj/dotで発色させたときの画像の光学密度
◎: 濃度が非常に濃い ○: 濃度が良好 △: 濃度がやや薄い ×:感度が非常に薄い
注3)感熱記録紙の耐可塑剤性
◎: 色濃度が非常に濃い ○:色濃度が良好 △:色濃度がやや薄い ×:色濃度が非常に薄い
注4)感熱記録紙の耐湿地肌被り性
◎:白色度の変化量が非常に少ない ○:白色度の変化量が少ない △:白色度の変化量がやや多い ×: 白色度の変化量が非常に大きい
注5)製造法評価
◎: 工程の難易度が小さくトータルの製造プロセスが短い。 ○: 工程の難易度がやや小さくトータルの製造プロセスがやや短い。 △:工程の難易度がやや大きくトータルの製造プロセスがやや長い。 ×: 工程の難易度が大きくトータルの製造プロセスが長い。
Claims (14)
- 支持体上に、無色又は淡色の染料前駆体と顕色剤とを含有する発色層を設けた感熱記録材料であって、前記顕色剤は、2,4'-ジヒドロキシジフェニルスルホンと4,4'-ジヒドロキシジフェニルスルホンとを含み、かつ前記2,4'-ジヒドロキシジフェニルスルホンと前記4,4'-ジヒドロキシジフェニルスルホンとの重量比は、50/50を超え95/5以下の範囲内であり、さらに、前記2,4'-ジヒドロキシジフェニルスルホンと前記4,4'-ジヒドロキシジフェニルスルホンは、2,4'-ジクロルジフェニルスルホンと4,4'-ジクロルジフェニルスルホンとを含有する第一の混合物から、前記2,4'-ジクロルジフェニルスルホンの重量比を高めた第二の混合物を得る分離工程と、前記第二の混合物を反応させて2,4'-ジヒドロキシジフェニルスルホンと4,4'-ジヒドロキシジフェニルスルホンとを含有する第三の混合物を得る反応工程と、前記第三の混合物を脱色精製する後処理工程とを順次経て得られたものを含むことを特徴とする感熱記録材料。
- 前記の重量比が、前記の一連の工程を経ることで実質的に決定されたものであることを特徴とする請求項1に記載の感熱記録材料。
- 前記の分離工程が、結晶析出工程を含むことを特徴とする請求項1又は2に記載の感熱記録材料。
- 前記の分離工程は、一回の分離により2,4'-ジクロルジフェニルスルホンと4,4'-ジクロルジフェニルスルホンとの重量比が、50/50を超え95/5以下の範囲内に入るものであることを特徴とする請求項1~3のいずれかに記載の感熱記録材料。
- 前記の第三の混合物を得る反応が、加水分解反応であることを特徴とする請求項1~4のいずれかに記載の感熱記録材料。
- 前記の第三の混合物を得る反応が、アルカリを加えて行う加水分解反応であることを特徴とする請求項1~5のいずれかに記載の感熱記録材料。
- 前記の反応工程は、加水分解反応後にpH調整を行って第三の混合物を得るものであることを特徴とする請求項1~6のいずれかに記載の感熱記録材料。
- 前記の後処理工程は、脱色精製を溶媒を用いて再結晶して行うものであることを特徴とする請求項1~7のいずれかに記載の感熱記録材料。
- さらに、補助剤として、下記(A)、(B)、(C)より選ばれる少なくとも一種の化合物を前記発色層に含有することを特徴とする請求項1~8のいずれかに記載の感熱記録材料。
(A)下記式(I)で示されるトリスフェノール系化合物
(B)下記式(II)で示されるジフェニルスルホン架橋型化合物
(C)分子量が2000以下であって分子構造中にウレア基とウレタン基を有し、かつ、該ウレア基と該ウレタン基のそれぞれの両端に芳香族化合物残基が直接結合しているウレアウレタン化合物 - 増感剤として、ジフェニルスルホン、m-ターフェニル、4-ベンジルビフェニル、1,2-ビス(3,4-ジメチルフェニル)エタン、2-ベンジルオキシナフタレン、1,2-ジフェノキシメチルベンゼン、1,2-ジフェノキシエタン、1,2-ビス(3-メチルフェノキシ)エタン、シュウ酸ジベンジルエステル、シュウ酸ジ(4-クロロベンジル)エステル、シュウ酸ジ(4-メチルベンジル)エステル、テレフタル酸ジベンジル、ステアリン酸アミド、4-アセチルビフェニルより選ばれる少なくとも一種の化合物を前記発色層に含有することを特徴とする請求項1~11のいずれかに記載の感熱記録材料。
- 顕色剤として、さらに2,2-ビス(4-ヒドロキシフェニル)プロパン、4-ヒドロキシ安息香酸ベンジルエステル、ヒドロキシ安息香酸エステルのオリゴマー、4-n-オクチルオキシカルボニルアミノサリチル酸またはその金属塩、ビス(4-ヒドロキシフェニル)酢酸ブチル、ビス(3-アリル-4-ヒドロキシフェニル)スルホン、4-ヒドロキシ-4'-イソプロポキシジフェニルスルホン、4-ヒドロキシ-4'-n-プロポキシジフェニルスルホン、4,4'-ビス(p-トルエンスルホニルアミノカルボニルアミノ)ジフェニルメタン、4-ヒドロキシ-4'-アリルオキシジフェニルスルホン、N-p-トルエンスルホニル―N'-3-(p-トルエンスルホニルオキシ)フェニルウレア、4,4'-ブチリデンビス(6-t-ブチル-3-メチルフェノール)、スルホニル尿素誘導体、より選ばれる少なくとも一種の化合物を前記発色層に含有することを特徴とする請求項1~12のいずれかに記載の感熱記録材料。
- 保存安定剤として、さらに4,4'-チオビス(2-メチル-6-t-ブチルフェノール)、4,4'-チオビス(3-メチル-6-t-ブチルフェノール)、2,2'-チオビス(6-t-ブチル-4-メチルフェノール)、2,2'-メチレンビス(4-メチル-6-t-ブチルフェノール)、トリス(2,6-ジメチル-4-t-ブチル-3-ヒドロキシベンジル)イソシアヌレート、4-ベンジルオキシ-4'-(2-メチルグリシジルオキシ)ジフェニルスルホン、4,4'-ジグリシジルオキシジフェニルスルホン、ナトリウム-2,2'-メチレンビス(4,6-ジ-t-ブチルフェニル)ホスフェート、N,N'-ジ-2-ナフチル-p-フェニレンジアミンより選ばれる少なくとも一種の化合物を前記発色層に含有することを特徴とする請求項1~13のいずれかに記載の感熱記録材料。
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JP2015030264A (ja) * | 2013-08-07 | 2015-02-16 | 王子ホールディングス株式会社 | 感熱記録体 |
JP2015150762A (ja) * | 2014-02-13 | 2015-08-24 | 王子ホールディングス株式会社 | 感熱記録体 |
JP2015150760A (ja) * | 2014-02-13 | 2015-08-24 | 王子ホールディングス株式会社 | 感熱記録体 |
WO2022024971A1 (ja) * | 2020-07-27 | 2022-02-03 | 日本製紙株式会社 | 感熱記録体 |
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EP3219506B1 (en) | 2016-03-17 | 2019-11-06 | Ricoh Company, Ltd. | Thermosensitive recording materials containing chelating agents |
JP6714107B2 (ja) * | 2017-01-30 | 2020-06-24 | 日本曹達株式会社 | 記録材料及び記録シート |
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JPH0592665A (ja) | 1991-10-03 | 1993-04-16 | Nikka Chem Co Ltd | 感熱記録材料 |
WO1997016420A1 (fr) | 1995-10-31 | 1997-05-09 | Nippon Soda Co., Ltd. | Composes du type a reticulation de diphenyle sulfone et materiaux d'enregistrement les utilisant |
WO2000014058A1 (fr) | 1998-09-04 | 2000-03-16 | Asahi Kasei Kabushiki Kaisha | Nouveau compose chromo-sensible |
JP2001260544A (ja) * | 2000-03-22 | 2001-09-25 | Nicca Chemical Co Ltd | 感熱記録材料 |
JP2002120462A (ja) | 2000-10-16 | 2002-04-23 | Nippon Steel Chem Co Ltd | 感熱記録材料 |
JP2002144742A (ja) | 2000-11-13 | 2002-05-22 | Nippon Steel Chem Co Ltd | 感熱記録材料 |
JP2003246152A (ja) | 2002-02-22 | 2003-09-02 | Konishi Kagaku Ind Co Ltd | 顕色剤およびこれを含む感熱記録材料 |
JP2004042401A (ja) | 2002-07-10 | 2004-02-12 | Konishi Kagaku Ind Co Ltd | 顕色剤およびこれを含む感熱記録材料 |
JP2004114366A (ja) | 2002-09-24 | 2004-04-15 | Konishi Kagaku Ind Co Ltd | 顕色剤およびこれを含む感熱記録材料 |
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JP2681737B2 (ja) | 1993-03-24 | 1997-11-26 | 日華化学株式会社 | 感熱記録材料 |
DE69316586T2 (de) | 1993-03-31 | 1998-04-30 | Nicca Chemical Co | Wärmeempfindliches Aufzeichnungsmaterial |
JP2001080218A (ja) | 1999-09-14 | 2001-03-27 | Nicca Chemical Co Ltd | 感熱記録材料 |
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2013
- 2013-03-19 US US14/386,657 patent/US9434199B2/en not_active Expired - Fee Related
- 2013-03-19 EP EP13764169.2A patent/EP2829409A4/en not_active Withdrawn
- 2013-03-19 WO PCT/JP2013/057755 patent/WO2013141224A1/ja active Application Filing
- 2013-03-19 JP JP2014506236A patent/JP6061431B2/ja not_active Expired - Fee Related
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JPH0592665A (ja) | 1991-10-03 | 1993-04-16 | Nikka Chem Co Ltd | 感熱記録材料 |
WO1997016420A1 (fr) | 1995-10-31 | 1997-05-09 | Nippon Soda Co., Ltd. | Composes du type a reticulation de diphenyle sulfone et materiaux d'enregistrement les utilisant |
JP3913820B2 (ja) | 1995-10-31 | 2007-05-09 | 日本曹達株式会社 | ジフェニルスルホン架橋型化合物及びそれを用いた記録材料 |
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WO2000014058A1 (fr) | 1998-09-04 | 2000-03-16 | Asahi Kasei Kabushiki Kaisha | Nouveau compose chromo-sensible |
JP3836867B2 (ja) | 1998-09-04 | 2006-10-25 | ケミプロ化成株式会社 | 新規なウレアウレタン化合物 |
JP3836868B2 (ja) | 1998-09-04 | 2006-10-25 | ケミプロ化成株式会社 | ウレアウレタン化合物 |
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JP2002120462A (ja) | 2000-10-16 | 2002-04-23 | Nippon Steel Chem Co Ltd | 感熱記録材料 |
JP2002144742A (ja) | 2000-11-13 | 2002-05-22 | Nippon Steel Chem Co Ltd | 感熱記録材料 |
JP2003246152A (ja) | 2002-02-22 | 2003-09-02 | Konishi Kagaku Ind Co Ltd | 顕色剤およびこれを含む感熱記録材料 |
JP2004042401A (ja) | 2002-07-10 | 2004-02-12 | Konishi Kagaku Ind Co Ltd | 顕色剤およびこれを含む感熱記録材料 |
JP2004114366A (ja) | 2002-09-24 | 2004-04-15 | Konishi Kagaku Ind Co Ltd | 顕色剤およびこれを含む感熱記録材料 |
JP2004182668A (ja) * | 2002-12-05 | 2004-07-02 | Konishi Kagaku Ind Co Ltd | ジヒドロキシジフェニルスルホン異性体混合物の製造方法 |
JP2004256421A (ja) * | 2003-02-25 | 2004-09-16 | Konishi Kagaku Ind Co Ltd | ジヒドロキシジフェニルスルホン異性体混合物の製造方法 |
JP2005041151A (ja) * | 2003-07-24 | 2005-02-17 | Nippon Steel Chem Co Ltd | 感熱記録材料 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015030264A (ja) * | 2013-08-07 | 2015-02-16 | 王子ホールディングス株式会社 | 感熱記録体 |
JP2015150762A (ja) * | 2014-02-13 | 2015-08-24 | 王子ホールディングス株式会社 | 感熱記録体 |
JP2015150760A (ja) * | 2014-02-13 | 2015-08-24 | 王子ホールディングス株式会社 | 感熱記録体 |
WO2022024971A1 (ja) * | 2020-07-27 | 2022-02-03 | 日本製紙株式会社 | 感熱記録体 |
JP7072130B1 (ja) * | 2020-07-27 | 2022-05-19 | 日本製紙株式会社 | 感熱記録体 |
Also Published As
Publication number | Publication date |
---|---|
EP2829409A4 (en) | 2015-10-28 |
US9434199B2 (en) | 2016-09-06 |
US20150051070A1 (en) | 2015-02-19 |
JP6061431B2 (ja) | 2017-01-18 |
EP2829409A1 (en) | 2015-01-28 |
JPWO2013141224A1 (ja) | 2015-08-03 |
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