WO2009110556A1 - アゾ化合物、アゾ顔料および該アゾ化合物又は該アゾ顔料を含む分散物、着色組成物、インクジェット記録用インク、インクジェット記録用インクタンク、インクジェット記録方法、及び記録物 - Google Patents
アゾ化合物、アゾ顔料および該アゾ化合物又は該アゾ顔料を含む分散物、着色組成物、インクジェット記録用インク、インクジェット記録用インクタンク、インクジェット記録方法、及び記録物 Download PDFInfo
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- WO2009110556A1 WO2009110556A1 PCT/JP2009/054179 JP2009054179W WO2009110556A1 WO 2009110556 A1 WO2009110556 A1 WO 2009110556A1 JP 2009054179 W JP2009054179 W JP 2009054179W WO 2009110556 A1 WO2009110556 A1 WO 2009110556A1
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
- C07D487/04—Ortho-condensed systems
-
- 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
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/0025—Monoazo dyes prepared by diazotising and coupling from diazotized amino heterocyclic compounds
- C09B29/0029—Monoazo dyes prepared by diazotising and coupling from diazotized amino heterocyclic compounds the heterocyclic ring containing only nitrogen as heteroatom
- C09B29/0037—Monoazo dyes prepared by diazotising and coupling from diazotized amino heterocyclic compounds the heterocyclic ring containing only nitrogen as heteroatom containing a five-membered heterocyclic ring with two nitrogen atoms
-
- 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
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/34—Monoazo dyes prepared by diazotising and coupling from other coupling components
- C09B29/36—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds
- C09B29/3695—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing other 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
- C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
- C09B35/02—Disazo dyes
- C09B35/021—Disazo dyes characterised by two coupling components of the same type
- C09B35/03—Disazo dyes characterised by two coupling components of the same type in which the coupling component is a heterocyclic compound
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/322—Pigment inks
Definitions
- the present invention relates to an azo compound, an azo pigment, a dispersion containing the azo compound or the azo pigment, a coloring composition, an ink for ink jet recording, an ink tank for ink jet recording, an ink jet recording method, and a recorded matter.
- a material for forming a color image has been mainly used as an image recording material, and specifically, an ink jet recording material, a thermal transfer recording material, an electrophotographic recording material, a transfer halogen.
- Silver halide photosensitive materials, printing inks, recording pens, and the like are actively used.
- color filters are used to record and reproduce color images on imaging devices such as CCDs in photography equipment and on LCDs and PDPs on displays.
- three primary colors (dyes and pigments) of the so-called additive color mixing method and subtractive color mixing method are used to display or record full color images.
- there is no fast-acting dye that has absorption characteristics that can realize the above-mentioned conditions and can withstand various use conditions and environmental conditions, and improvement is strongly desired.
- the dyes and pigments used in each of the above applications must have the following properties in common. That is, it has preferable absorption characteristics in terms of color reproducibility, fastness under environmental conditions to be used, for example, light resistance, heat resistance, good resistance to oxidizing gases such as ozone, and the like.
- the pigment when the pigment is a pigment, the pigment is substantially insoluble in water and organic solvents, has good chemical fastness, and has favorable absorption characteristics in a molecular dispersion state even when used as particles. It must also have properties such as no damage.
- the above required characteristics can be controlled by the strength of intermolecular interaction, but they are in a trade-off relationship and are difficult to achieve both.
- the pigment in addition to having a particle size and a particle shape necessary for expressing the desired transparency, fastness under the environmental conditions used, such as light resistance, heat resistance, Good resistance to oxidative gases such as ozone, and other chemical fastness to organic solvents and sulfurous acid gas. Disperse even fine particles in the medium used, and stable dispersion. , Etc. are also required.
- a pigment having a good yellow hue, high resistance to light, wet heat, and active gas in the environment, particularly high coloring power and fast to light is strongly desired.
- the required performance for pigments is more diverse than dyes that require performance as pigment molecules, and not only the performance as pigment molecules, but also the above requirements as solids (fine particle dispersions) as aggregates of pigment molecules All performance needs to be satisfied.
- the group of compounds that can be used as pigments is extremely limited compared to dyes, and even if high-performance dyes are derived into pigments, there are only a few that can satisfy the required performance as fine particle dispersions. It cannot be developed. This is confirmed by the fact that the number of pigments registered in the color index is less than 1/10 of the number of dyes.
- Azo pigments are widely used in printing inks, ink-jet inks, electrophotographic materials and the like because they are excellent in hue and coloring power, which are color characteristics.
- the most typically used yellow azo pigments are diarylide pigments.
- diarylide pigments include C.I. Pigment Yellow 12, 13 and 17 and the like.
- diarylide pigments are very inferior in fastness, especially light resistance, when the printed matter is exposed to light, the pigment is decomposed and faded, which is not suitable for long-term storage of the printed matter.
- azo pigments having improved fastness by increasing the molecular weight or introducing a group having a strong intermolecular interaction are also disclosed.
- Patent Documents 1 to 3 show that even in the improved pigment, for example, the pigment described in Patent Document 1 has improved light resistance, but is still insufficient.
- the pigment described in Patent Documents 2 and 3 has a green hue. There was a drawback that coloring power was lowered by taste and color characteristics were inferior.
- Patent Documents 4, 5, and 6 disclose dyes having absorption characteristics excellent in color reproducibility and sufficient fastness. However, since all of the specific compounds described in the patent document are dissolved in water or an organic solvent, the chemical fastness is not sufficient.
- JP-A-56-38354 US Pat. No. 2,936,306 Japanese Patent Laid-Open No. 11-1000051 Japanese Patent Laid-Open No. 2003-277661 Japanese Patent Laying-Open No. 2005-220217 JP 2008-7732 A
- the present invention is an azo compound, an azo pigment, and an azo compound or a dispersion containing the azo pigment, which has excellent color characteristics such as coloring power and hue, and excellent durability such as light resistance and ozone resistance, and a coloring composition. It is an object of the present invention to provide an ink for ink jet recording, an ink tank for ink jet recording and an ink jet recording method using the same, and a recorded matter having excellent color characteristics and durability.
- R 1 , R 2 , R 3 , Y, Z, and G each independently represent a hydrogen atom and a substituent, and n represents an integer of 2 to 4.
- R ′ 1 , R ′ 2 and Y ′ are each independently a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, C2-C4 alkynyl group, C1-C5 acyl group, C7-C9 aralkyl group, 5- to 8-membered saturated or unsaturated hydrocarbon ring group, 5- to 8-membered ring saturation Or an unsaturated heterocyclic group, R ′ 3 represents a hydrogen atom or a monovalent substituent, Z ′ represents an electron-withdrawing group having a Hammett ⁇ p value of 0.2 or more, and X represents a pyrazole ring.
- G 1 represents an atomic group forming a 5- to 8-membered saturated or unsaturated hetero ring: R ′ 1 , R ′ 2 , R ′ 3 , Y 'If a heterocyclic saturated or unsaturated one of G 1 is 5- to 8-membered ring, .R represents a single or fused ring' 1, R '2 R a '3, Y', if G 1 represents a 5-membered heterocycle ring unsaturated, the two or more nitrogen atoms in the ring.)
- X in the said General formula (2) is a nitrogen atom,
- G 1 in the general formula (2) is selected from any of the substituent groups represented by the following general formulas (3) -1 to (3) -6: Azo pigments, tautomers, salts or hydrates thereof.
- R 6 to R 23 each independently represents a hydrogen atom or a substituent.
- R 6 to R 21 may be bonded to each other to form a ring.
- the azo pigment represented by the general formula (1) is an azo pigment represented by the following general formula (4), the azo pigment according to [1], its tautomer, Salt or hydrate.
- n, R 1 , R 2 , R 3 , Y, and Z are each independently synonymous with n, R 1 , R 2 , R 3 , Y, and Z in General Formula (1).
- X represents a heteroatom adjacent to the carbon atom bonded to the pyrazole ring
- G 2 represents an atomic group forming a 5- to 8-membered saturated or unsaturated heterocycle
- n 2 Represents a dimer through R 1 , R 2 , R 3 , Y, Z or G 2.
- n 3 through R 1 , R 2 , R 3 , Y, Z or G 2
- R 1 , R 2 , R 3 , Y, G 2 When is a 5- to 8-membered saturated or unsaturated heterocycle, it is a single ring or a fused ring.
- X in the said General formula (4) is a nitrogen atom, The azo pigment as described in [5], its tautomer, their salt, or hydrate.
- G 2 in the general formula (4) is selected from the group of monovalent to trivalent substituents represented by (3) -1 to (3) -6 in the following general formula (3)
- R 6 to R 23 each independently represents a hydrogen atom or a substituent.
- R 6 to R 21 may be bonded to each other to form a ring.
- R ′ 1 , R ′ 2 and Y ′ are each independently a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, or 2 to 4 alkynyl groups, acyl groups of 1 to 5 carbon atoms, aralkyl groups of 7 to 9 carbon atoms, 5- to 8-membered saturated or unsaturated hydrocarbon ring groups, 5- to 8-membered saturated or unsaturated rings Represents a heterocyclic group, R ′ 3 represents a hydrogen atom or a monovalent substituent, Z ′ represents an electron-withdrawing group having a Hammett ⁇ p value of 0.2 or more, and X represents a carbon bonded to the pyrazole ring.
- G 1 represents an atomic group forming a 5- to 8-membered saturated or unsaturated hetero ring: R ′ 1 , R ′ 2 , R ′ 3 , Y ′, G 1 If any of a heterocyclic saturated or unsaturated 5- to 8-membered ring, .R represents a single or fused ring '1, R' 2, R '3, ', If G 1 represents a 5-membered heterocycle ring unsaturated, having two or more nitrogen atoms in the ring.)
- G 1 in the general formula (2) is selected from any of the substituent groups represented by the following general formulas (3) -1 to (3) -6: Compound.
- R 6 to R 23 each independently represents a hydrogen atom or a substituent.
- R 6 to R 21 may be bonded to each other to form a ring.
- G 2 represents an atomic group forming a 5- to 8-membered saturated or unsaturated heterocycle
- n 2, R 1 , R 2 , R 3 , Y
- Any of R 1 , R 2 , R 3 , Y, G 2 is saturated with a 5- to 8-membered ring Or when it represents an unsaturated heterocycle, it is a single ring or a condensed ring.
- R 6 to R 23 each independently represents a hydrogen atom or a substituent.
- R 6 to R 21 may be bonded to each other to form a ring.
- [12] Contains at least one azo pigment according to any one of [1] to [7], a tautomer, salt or hydrate thereof, or an azo compound according to any one of [8] to [11]
- an azo pigment having excellent color characteristics such as tinting strength and hue, durability such as ozone resistance, and particularly excellent light resistance and dispersibility is provided.
- a pigment dispersion excellent in color characteristics, durability and dispersion stability is provided.
- the pigment dispersion can be used, for example, in printing inks such as inkjet, color toners for electrophotography, LCDs, LCDs, PDPs, color filters used in image sensors such as CCDs, paints, colored plastics, etc. it can.
- Example 2 is an infrared absorption spectrum of the azo pigment (2) -1 obtained in Example 2.
- 4 is an infrared absorption spectrum of the azo pigment (2) -43 obtained in Example 3. It is an infrared absorption spectrum of the azo compound (17) obtained in Comparative Example 1.
- Hammett's substituent constant ⁇ p value used in the present specification will be described briefly.
- Hammett's rule is a method described in 1935 in order to quantitatively discuss the effect of substituents on the reaction or equilibrium of benzene derivatives.
- Substituent constants determined by Hammett's rule include a ⁇ p value and a ⁇ m value, and these values can be found in many general books.
- each substituent is limited or explained by Hammett's substituent constant ⁇ p, but this means that it is limited to only a substituent having a value known in the literature, which can be found in the above-mentioned book. Needless to say, even if the value is unknown, it includes a substituent that would be included in the range when measured based on Hammett's rule.
- the compounds represented by the general formulas (1), (2), (4), and (5) of the present invention are not benzene derivatives, the ⁇ p value is used as a scale indicating the electronic effect of the substituent, regardless of the substitution position. use. In the present invention, the ⁇ p value will be used in this sense.
- the pigment is in a state where the molecules are firmly bonded to each other by the cohesive energy due to the strong interaction between the dye molecules. In order to create this state, it is described in, for example, Journal of Imaging Society of Japan, Vol. 43, page 10 (2004) that van der Waals force between molecules and hydrogen bonding between molecules are necessary. In order to increase the van der Waals force between molecules, introduction of an aromatic group, a polar group and / or a hetero atom into the molecule can be considered. Moreover, in order to form an intermolecular hydrogen bond, introduction
- the pigment molecule preferably contains an amide bond, a sulfonamide bond, an ether bond, a sulfone group, an oxycarbonyl group, an imide group, a carbamoylamino group, a hetero ring, a benzene ring and the like.
- the azo pigment in the present invention is represented by the general formula (1).
- the compound represented by the general formula (1) can easily form an intermolecular interaction of dye molecules due to its specific structure, has low solubility in water or an organic solvent, and can be an azo pigment.
- a pigment is used by being finely dispersed as solid particles such as molecular aggregates in a solvent, unlike a dye used by being dissolved in water or an organic solvent in a molecular dispersion state.
- R 1 , R 2 , R 3 , Y, Z, and G each independently represent a hydrogen atom and a substituent, and n represents an integer of 2 to 4.
- n represents an integer of 2 to 4, preferably 2 or 3, and more preferably 2.
- n 2 or more, the molecular weight increases and intermolecular interactions such as ⁇ - ⁇ stacking between molecules become stronger.
- the interaction between molecules becomes dense, the solvent resistance is improved.
- the interaction between molecules becomes dense and crystallinity increases, energy relaxation due to lattice vibration or the like is likely to occur, and light resistance is improved.
- n exceeds 4, the molecular weight increases, but it becomes difficult for the molecule to maintain planarity due to steric hindrance. As a result, the intermolecular interaction is weakened, and the light resistance and the solvent resistance tend to decrease.
- R 1 , R 2 , R 3 , Y, Z, and G may have a substituent.
- the group represented by R 1 , R 2 , R 3 , Y, Z, G is a hydrogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, or 7 to 7 carbon atoms.
- the azo pigment of the present invention contains an ionic hydrophilic group as a substituent, it is preferably a salt with a polyvalent metal cation (for example, magnesium ion, calcium ion, barium ion), and is a lake pigment. Is particularly preferred.
- a polyvalent metal cation for example, magnesium ion, calcium ion, barium ion
- R 1 and R 2 each independently represent a hydrogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, or a linear or branched alkenyl group having 2 to 6 carbon atoms.
- the case where it is a heterocyclic group is preferable.
- a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms, and a substituted or unsubstituted 5- to 8-membered aryl group are preferable, and among them, straight chain having 1 to 4 carbon atoms is particularly preferable. Most preferred is a chain or branched alkyl group, or a substituted or unsubstituted 5- to 6-membered aryl group.
- the monovalent substituent represented by R 3 is a linear or branched alkyl group having 1 to 6 carbon atoms (for example, methyl, ethyl, n-propyl, i-propyl, n -Butyl, i-butyl, sec-butyl, t-butyl, 2-ethylhexyl, 2-methylsulfonylethyl, 3-phenoxypropyl, trifluoromethyl), an aralkyl group having 7 to 12 carbon atoms (eg benzyl, 4-amino Phenylmethyl), a linear or branched alkenyl group having 2 to 6 carbon atoms (for example, ethenyl, 1-propenyl, 1,3-butanedienyl), a linear or branched alkynyl group having 2 to 6 carbon atoms (for example, Ethynyl, 1-propynyl, 1-butynyl), a
- R 3 include a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms (for example, methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, sec- Butyl, t-butyl), an alkenyl group having 2 to 4 carbon atoms (for example, ethenyl), and an alkynyl group having 2 to 4 carbon atoms (for example, ethynyl).
- a hydrogen atom for example, methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, sec- Butyl, t-butyl
- an alkenyl group having 2 to 4 carbon atoms for example, ethenyl
- an alkynyl group having 2 to 4 carbon atoms for example, ethynyl
- R 3 is more preferably a hydrogen atom, a methyl group, an ethyl group, an ethenyl group, or an ethynyl group. Among these, a hydrogen atom is particularly preferable.
- Y include a hydrogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, a linear or branched alkenyl group having 2 to 6 carbon atoms, and a linear or branched chain having 2 to 6 carbon atoms.
- a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms, a carbamoyl group having 1 to 4 carbon atoms, an alkoxycarbonyl group having 1 to 5 carbon atoms, a substituted or unsubstituted group is preferable.
- a 5- to 8-membered aryl group is preferable, and among them, a hydrogen atom, a methyl group, a t-butyl group, and a substituted or unsubstituted 5- to 6-membered aryl group are particularly preferable.
- Z is preferably an electron-withdrawing group having a Hammett's substituent constant ⁇ p value of 0.2 or more, and preferably an electron-withdrawing group having a ⁇ p value of 0.3 or more. More preferred.
- the upper limit is preferably an electron withdrawing group of 1.0 or less.
- Z which is an electron withdrawing group having a ⁇ p value of 0.2 or more include an acyl group, an acyloxy group, a carbamoyl group, an alkyloxycarbonyl group, an aryloxycarbonyl group, a cyano group, a nitro group, and a dialkylphosphono group.
- Z include an acyl group having 2 to 6 carbon atoms, an acyloxy group having 2 to 6 carbon atoms, a carbamoyl group having 1 to 8 carbon atoms, an alkyloxycarbonyl group having 2 to 8 carbon atoms, and 7 to 12 carbon atoms.
- a cyano group an alkyloxycarbonyl group having 2 to 8 carbon atoms, an alkylsulfonyl group having 1 to 6 carbon atoms, an arylsulfonyl group having 6 to 10 carbon atoms, or a sulfamoyl group having 0 to 9 carbon atoms.
- Particularly preferred are a cyano group, an alkyloxycarbonyl group having 2 to 8 carbon atoms, an alkylsulfonyl group having 1 to 4 carbon atoms, an arylsulfonyl group having 6 to 8 carbon atoms, or a sulfamoyl group having 0 to 8 carbon atoms.
- a cyano group is most preferred.
- G include a hydrogen atom, a linear or branched alkyl group, a cycloalkyl group, an acyl group, an alkenyl group, an alkynyl group, an aralkyl group, a saturated 5- to 8-membered ring, An unsaturated hydrocarbon ring, a 5- to 8-membered saturated or unsaturated heterocycle, and when G represents a 5- to 8-membered saturated or unsaturated hydrocarbon ring or heterocycle, a single ring or a condensed ring It is a ring.
- G may have a substituent.
- G include a hydrogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, an acyl group having 1 to 6 carbon atoms, a 5- to 8-membered saturated or unsaturated hydrocarbon ring, Examples thereof include a 5- to 8-membered saturated or unsaturated heterocyclic ring, and when G represents a 5- to 8-membered saturated or unsaturated hydrocarbon ring or heterocyclic ring, it is a monocyclic ring or a condensed ring. G may have a substituent.
- G is preferably a 5- to 8-membered substituted or unsubstituted aromatic hydrocarbon ring or a 5- to 8-membered substituted or unsubstituted heterocyclic group.
- G represents a 5- to 8-membered substituted or unsubstituted aromatic hydrocarbon ring or a 5- to 8-membered substituted or unsubstituted heterocyclic group, it is a single ring or a condensed ring.
- examples of the heterocyclic group represented by G include a pyridyl group, a pyrazinyl group, a pyridazinyl group, a pyrimidinyl group, a triazinyl group, a quinolinyl group, an isoquinolinyl group; Quinazolinyl, cinnolinyl, phthalazinyl, quinoxalinyl, pyrrolyl, indolyl, furanyl, benzofuranyl, thiophenyl, benzothiophenyl, pyrazolyl, imidazolyl, benzimidazolyl, triazolyl, oxazolyl, benzoxa Zolyl, thiazolyl, benzothiazolyl, isothiazolyl, benzisothiazolyl, thiadiazolyl, isoxazolyl, benzisoxazolyl, pyrrolidinyl, piperid
- a pyridyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, and a triazinyl group are more preferable, and among them, a pyridyl group, a pyrimidinyl group, and a triazinyl group are particularly preferable.
- G is a group that can further have a substituent
- substituents include the groups listed for R 1 , R 2 , R 3 , Y, Z, and G in the general formula (1). The same thing can be mentioned.
- R 1 , R 2 , R 3 , Y, and Z may have a substituent, and examples of the substituent include R 1 , R 2 , R 3 , Y, Z, and the like in the general formula (1).
- the same substituents as mentioned for G can be mentioned.
- the divalent group includes an alkylene group (eg, methylene, ethylene, propylene, butylene, pentylene), an alkenylene group (eg, , Ethenylene, propenylene), alkynylene groups (eg, ethynylene, propynylene), arylene groups (eg, phenylene, naphthylene), divalent heterocyclic groups (eg, 6-chloro-1,3,5-triazine-2, 4-diyl group, pyrimidine-2, 4-diyl group, pyrimidine-4, 6-diyl group, quinoxaline-2, 3-diyl group, pyridazine-3,6-diyl), -O-, -CO-, -NR '- (R' is a hydrogen atom, an alkyl group or an aryl group), - S -
- alkylene group, alkenylene group, alkynylene group, arylene group, divalent heterocyclic group, R ′ alkyl group or aryl group may have a substituent.
- R ′ The alkyl group and aryl group of R ′ are the same as the substituent examples given when R 1 , R 2 , R 3 , Y, Z, and G in the general formula (1) are an alkyl group or an aryl group. .
- an alkylene group having 6 or less carbon atoms More preferably, an alkylene group having 6 or less carbon atoms, an alkenylene group having 6 or less carbon atoms, an alkynylene group having 6 or less carbon atoms, an arylene group having 6 to 10 carbon atoms, a divalent heterocyclic group, -S-,- More preferably, it is SO—, —SO 2 — or a combination thereof (for example, —SCH 2 CH 2 S—, —SCH 2 CH 2 CH 2 S—, etc.).
- the total carbon number of the divalent linking group is preferably 0 to 20, more preferably 0 to 15, and most preferably 0 to 10.
- R 1 , R 2 , R 3 , Y, Z, G represent a trivalent group
- the trivalent group includes a trivalent hydrocarbon group, a trivalent heterocyclic group,> N-, or this And a divalent group (for example,> NCH 2 CH 2 NH—,> NCONH—, etc.).
- the total carbon number of the trivalent linking group is preferably 0 to 20, more preferably 0 to 15, and most preferably 0 to 10.
- a compound in which at least one of various groups is the above preferred group is preferable, and more various groups are the above preferred groups.
- a certain compound is more preferable, and a compound in which all groups are the above-mentioned preferable groups is most preferable.
- a particularly preferable combination as the azo pigment represented by the general formula (1) of the present invention includes the following (a) to (f).
- (A) n represents an integer of 2 to 4, preferably an integer of 2 to 3, and 2 is particularly preferable.
- R 1 and R 2 are each independently a hydrogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, a linear or branched alkenyl group having 2 to 6 carbon atoms, or 2 to 6 carbon atoms.
- a linear or branched alkynyl group a substituted or unsubstituted 5- to 8-membered aryl group, a substituted or unsubstituted 5- to 8-membered heterocyclic group, among which a hydrogen atom, carbon It is more preferably a linear or branched alkyl group having 1 to 4 carbon atoms, a substituted or unsubstituted 5- to 8-membered aryl group, a linear or branched alkyl group having 1 to 4 carbon atoms, A substituted 5- to 6-membered aryl group is more preferable, and a linear or branched alkyl group having 1 to 4 carbon atoms is particularly preferable.
- the linear or branched alkyl group having 1 to 4 carbon atoms a methyl group and a t-butyl group are preferable, and a methyl group is more preferable.
- (C) Y is a hydrogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, a linear or branched alkenyl group having 2 to 6 carbon atoms, or a linear or branched chain having 2 to 6 carbon atoms.
- a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms, a carbamoyl group having 1 to 4 carbon atoms, an alkoxycarbonyl group having 1 to 4 carbon atoms, a substituted or unsubstituted group is preferable.
- R 3 is preferably a hydrogen atom or a monovalent substituent, more preferably a hydrogen atom, a methyl group, an ethyl group, an ethenyl group or an ethynyl group, and particularly a hydrogen atom. The case is most preferred.
- (E) Z is a cyano group, an acyl group having 2 to 6 carbon atoms, an acyloxy group having 2 to 6 carbon atoms, a carbamoyl group having 1 to 8 carbon atoms, an alkyloxycarbonyl group having 2 to 8 carbon atoms, or 7 carbon atoms.
- aryloxycarbonyl group nitro group, C1-C6 alkylsulfinyl group, C6-C10 arylsulfinyl group, C1-C6 alkylsulfonyl group, C6-C10 Arylsulfonyl group, sulfamoyl group having 0 to 9 carbon atoms, halogenated alkyl group having 1 to 6 carbon atoms, halogenated aryl group having 1 to 6 carbon atoms, halogenated alkyloxy group having 1 to 6 carbon atoms, carbon number A halogenated alkylthio group having 1 to 6 carbon atoms, a halogenated aryloxy group having 6 to 12 carbon atoms, and a 5- to 8-membered heterocyclic group are preferable.
- a cyano group and an aryl group having 2 to 8 carbon atoms are preferable.
- Kill oxycarbonyl group, an alkylsulfonyl group having 1 to 6 carbon atoms, an arylsulfonyl group having 6 to 10 carbon atoms be a sulfamoyl group having 0 to 8 carbon atoms
- G represents a hydrogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, an acyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, or an alkynyl group having 2 to 6 carbon atoms. And preferably a aralkyl group having 7 to 10 carbon atoms, a 5- to 8-membered saturated or unsaturated hydrocarbon ring, a 5- to 8-membered saturated or unsaturated heterocycle, and G is a 5- to 8-membered ring. When it represents a saturated or unsaturated hydrocarbon ring or heterocyclic ring, it is a monocyclic ring or a condensed ring.
- G may have a substituent. Further, it is preferably a substituted or unsubstituted 5- to 8-membered aromatic hydrocarbon ring, a substituted or unsubstituted 5- to 8-membered aromatic heterocycle, and G is an aromatic group having a 5- to 8-membered ring. When it represents a hydrocarbon ring or an aromatic heterocycle, it is a single ring or a condensed ring. Among them, it is most preferable that G is a substituted or unsubstituted 6-membered aromatic heterocycle, and when G represents a substituted or unsubstituted 6-membered aromatic heterocycle, it is a monocyclic ring or a condensed ring. .
- the present invention includes within its scope tautomers of the azo pigments represented by the general formula (1).
- the general formula (1) is shown in the form of an extreme structural formula among several tautomers that can be taken in terms of chemical structure, but may be a tautomer other than the structure described, You may use as a mixture containing these tautomers.
- the pigment represented by the general formula (1) may be an azo-hydrazone tautomer represented by the following general formula (1 ′).
- the present invention includes in its scope a compound represented by the following general formula (1 ′), which is a tautomer of the azo pigment represented by the general formula (1).
- the present invention also relates to an azo pigment represented by the general formula (2), a tautomer thereof, a salt or a hydrate thereof.
- R ′ 1 , R ′ 2 and Y ′ are each independently a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, C2-C4 alkynyl group, C1-C5 acyl group, C7-C9 aralkyl group, 5- to 8-membered saturated or unsaturated hydrocarbon ring group, 5- to 8-membered ring saturation Or an unsaturated heterocyclic group, R ′ 3 represents a hydrogen atom or a monovalent substituent, Z ′ represents an electron-withdrawing group having a Hammett ⁇ p value of 0.2 or more, and X represents a pyrazole ring.
- G 1 represents an atomic group forming a 5- to 8-membered saturated or unsaturated hetero ring: R ′ 1 , R ′ 2 , R ′ 3 , Y 'If a heterocyclic saturated or unsaturated one of G 1 is 5- to 8-membered ring, .R represents a single or fused ring' 1, R '2 R a '3, Y', if G 1 represents a 5-membered heterocycle ring unsaturated, the two or more nitrogen atoms in the ring.)
- R ′ 1 , R ′ 2 , R ′ 3 , Y ′, Z ′, X, and G 1 in the general formula (2) will be described in more detail.
- R ′ 1 , R ′ 2 , R ′ 3 , Y ′, Z ′, and G 1 may have a substituent.
- R ′ 1 and R ′ 2 each independently represent a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, or 2 carbon atoms.
- Preferred is a -4 alkynyl group, an aralkyl group having 7 to 9 carbon atoms, a 5- to 8-membered saturated or unsaturated hydrocarbon ring group, and a 5- to 8-membered saturated or unsaturated heterocyclic group.
- R ′ 1 or R ′ 2 represents a 5- to 8-membered saturated or unsaturated hydrocarbon ring group or a 5- to 8-membered saturated or unsaturated heterocyclic group, it is monocyclic or condensed When it is a ring and can have a substituent, it may have a substituent or may be unsubstituted. Further, a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms, a 5- to 8-membered saturated or unsaturated hydrocarbon ring group, a 5- to 8-membered saturated or unsaturated heterocyclic group.
- R ′ 1 or R ′ 2 represents a 5- to 8-membered saturated or unsaturated hydrocarbon ring group or a 5- to 8-membered saturated or unsaturated heterocyclic group
- R ′ 1 or R ′ 2 represents a 5- to 8-membered saturated or unsaturated hydrocarbon ring group or a 5- to 8-membered saturated or unsaturated heterocyclic group
- it may have a substituent or may be unsubstituted.
- a methyl group, a t-butyl group, a substituted or unsubstituted 5- to 8-membered aryl group, and a substituted or unsubstituted 5- to 8-membered aromatic heterocyclic group are most preferable.
- Examples of the group R ′ 3 are the same as the examples of R 3 in the general formula (1), and preferred examples are also the same.
- the example of Z 'group is synonymous with the example of Z in the said General formula (1), and its preferable example is also the same.
- Y ′ is a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, or 7 to 7 carbon atoms.
- Preferred is a 9 aralkyl group, a 5- to 8-membered saturated or unsaturated hydrocarbon ring group, and a 5- to 8-membered saturated or unsaturated heterocyclic group.
- Y ′ represents a 5- to 8-membered saturated or unsaturated hydrocarbon ring group or a 5- to 8-membered saturated or unsaturated heterocyclic group, it is a single ring or a condensed ring and has a substituent. If possible, it may have a substituent or may be unsubstituted.
- Y ′ represents a 5- to 8-membered saturated or unsaturated hydrocarbon ring group or a 5- to 8-membered saturated or unsaturated heterocyclic group, it is a single ring or a condensed ring and has a substituent. If possible, it may have a substituent or may be unsubstituted.
- a hydrogen atom, a methyl group, a t-butyl group, a substituted or unsubstituted 6-membered aromatic hydrocarbon ring group, or a substituted or unsubstituted 6-membered aromatic heterocyclic group is particularly preferable. .
- X represents an atom adjacent to a carbon atom, preferably a hetero atom, more preferably a nitrogen atom, a sulfur atom, an oxygen atom, or a selenium atom, particularly a nitrogen atom.
- a sulfur atom and an oxygen atom are preferable, and a nitrogen atom is most preferable.
- X is a nitrogen atom, it becomes easier to form not only the intermolecular interaction of the dye molecule but also the intramolecular interaction. This makes it easy to construct a pigment having a stable molecular arrangement, which is preferable in terms of showing good hue and high fastness (light resistance, gas, heat, solvent, etc.).
- G 1 is preferably a 5- to 8-membered saturated or unsaturated heterocyclic ring, and when G 1 represents a 5- to 8-membered saturated or unsaturated heterocyclic ring, it is a monocyclic ring or a condensed ring. . G 1 may have a substituent. Further, it is more preferably a substituted or unsubstituted 5- to 8-membered aromatic heterocycle, and when G 1 represents a 5- to 8-membered aromatic heterocycle, it is a single ring or a condensed ring, When 1 represents a 5-membered aromatic heterocycle, it has two or more nitrogen atoms in the ring.
- a substituted or unsubstituted 6-membered aromatic heterocycle is preferable, and any one of the substituent groups represented by (3) -1 to (3) -6 in the following general formula (3) Is more preferable, and the substituent group represented by (3) -1 or (3) -2 is most preferable.
- each of R 6 to R 23 independently represents a hydrogen atom, a hydroxyl group, an amino group, a linear or branched alkyl group having 1 to 4 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, An acyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, an alkyloxy group having 1 to 4 carbon atoms, an alkylamino group having 1 to 8 carbon atoms, and 2 carbon atoms An alkyloxycarbonyl group having 5 to 5 carbon atoms, an amide group having 1 to 5 carbon atoms, an aralkyl group having 7 to 10 carbon atoms, a 5- to 8-membered saturated or unsaturated hydrocarbon ring, and a 5- to 8-membered saturated or unsaturated ring.
- R 6 to R 23 represent a 5- to 8-membered saturated or unsaturated hydrocarbon ring or heterocyclic ring, it is a monocyclic ring or a condensed ring.
- R 6 to R 23 can further have a substituent, they may have a substituent or may be unsubstituted.
- it is an alkylamino group, an alkyloxycarbonyl group having 2 to 5 carbon atoms, or an amide group having 1 to 5 carbon atoms, and among them, a hydrogen atom, a hydroxyl group, an amino group, a methyl group, a methyloxy group, a methylamino group Particularly preferred is a group or an acetamide group.
- R 6 to R 21 may form a bond with each other, in which case R 6 to R 21 are necessary to form a 5- to 7-membered hydrocarbon ring and a 5- to 7-membered heteroatom ring. It is preferably a nonmetallic atomic group, and more preferably a nonmetallic atomic group necessary for forming a 6-membered aromatic hydrocarbon ring or a 6-membered aromatic heteroatom ring.
- examples of the heterocyclic group represented by G 1 include, but are not limited to, a substitution position.
- a pyridyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, and a triazinyl group are more preferable, and among them, a pyridyl group, a pyrimidinyl group, and a triazinyl group are particularly preferable.
- G 1 is a group that can further have a substituent
- examples of the substituent are listed as R 1 , R 2 , R 3 , Y, Z, and G in the general formula (1). The same thing as a group can be mentioned.
- a particularly preferred combination as the azo pigment represented by the general formula (2) of the present invention includes the following (A) to (G).
- R ′ 1 and R ′ 2 each independently represent a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, or an alkynyl group having 2 to 4 carbon atoms.
- the aralkyl group having 7 to 9 carbon atoms, a 5- to 8-membered saturated or unsaturated hydrocarbon ring group, and a 5- to 8-membered saturated or unsaturated heterocyclic group are preferable.
- R ′ 1 or R ′ 2 represents a 5- to 8-membered saturated or unsaturated hydrocarbon ring group or a 5- to 8-membered saturated or unsaturated heterocyclic group, it is monocyclic or condensed When it is a ring and can have a substituent, it may have a substituent or may be unsubstituted.
- R ′ 1 or R ′ 2 represents a 5- to 8-membered saturated or unsaturated hydrocarbon ring group or a 5- to 8-membered saturated or unsaturated heterocyclic group. In this case, it is a single ring or a condensed ring, and when it can have a substituent, it may have a substituent or may be unsubstituted.
- a linear or branched alkyl group having 1 to 4 carbon atoms a substituted or unsubstituted 5- to 8-membered aryl group, a substituted or unsubstituted 5- to 8-membered aromatic heterocyclic group.
- a linear or branched alkyl group having 1 to 4 carbon atoms is particularly preferable.
- a methyl group and a t-butyl group are preferable, and a methyl group is more preferable.
- Y ′ is a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, or an aralkyl having 7 to 9 carbon atoms.
- the group is preferably a 5- to 8-membered saturated or unsaturated hydrocarbon ring group or a 5- to 8-membered saturated or unsaturated heterocyclic group.
- Y ′ represents a 5- to 8-membered saturated or unsaturated hydrocarbon ring group or a 5- to 8-membered saturated or unsaturated heterocyclic group, it is a single ring or a condensed ring and has a substituent.
- Y ′ represents a 5- to 8-membered saturated or unsaturated hydrocarbon ring group or a 5- to 8-membered saturated or unsaturated heterocyclic group, it is a single ring or a condensed ring and has a substituent. If possible, it may have a substituent or may be unsubstituted.
- a hydrogen atom, a methyl group, a t-butyl group, a substituted or unsubstituted 6-membered aromatic hydrocarbon ring group, or a substituted or unsubstituted 6-membered aromatic heterocyclic group is more preferable.
- a hydrogen atom is most preferred.
- R ′ 3 is preferably a hydrogen atom or a monovalent substituent, more preferably a hydrogen atom, a methyl group, an ethyl group, an ethenyl group or an ethynyl group, and particularly preferably a hydrogen atom. Some cases are most preferred.
- Z ′ is a cyano group, an acyl group having 2 to 6 carbon atoms, an acyloxy group having 2 to 6 carbon atoms, a carbamoyl group having 1 to 8 carbon atoms, an alkyloxycarbonyl group having 2 to 8 carbon atoms, or a carbon number 7-12 aryloxycarbonyl group, nitro group, C1-C6 alkylsulfinyl group, C6-C10 arylsulfinyl group, C1-C6 alkylsulfonyl group, C6-C6 10 arylsulfonyl groups, sulfamoyl groups having 0 to 9 carbon atoms, halogenated alkyl groups having 1 to 6 carbon atoms, halogenated aryl groups having 1 to 6 carbon atoms, halogenated alkyloxy groups having 6 to 12 carbon atoms, carbon A halogenated alkylthio group having 1 to 6 carbon atoms,
- alkyloxycarbonyl group having 2 to 8 carbon atoms are preferably an alkyloxycarbonyl group having 2 to 8 carbon atoms, an alkylsulfonyl group having 1 to 6 carbon atoms, an arylsulfonyl group having 6 to 10 carbon atoms, and a sulfamoyl group having 0 to 8 carbon atoms, and most preferably It is a cyano group.
- X is preferably a heteroatom, more preferably a nitrogen atom, an oxygen atom, a sulfur atom or a selenium atom, particularly preferably a nitrogen atom, an oxygen atom or a sulfur atom, Is most preferable.
- G 1 is preferably a 5- to 8-membered saturated or unsaturated heterocycle, and when G 1 represents a 5- to 8-membered saturated or unsaturated heterocycle, it is monocyclic or fused It is a ring. G 1 may have a substituent. When G 1 represents a 5-membered unsaturated heterocyclic ring, it has two or more nitrogen atoms in the ring.
- a substituted or unsubstituted 5- to 8-membered aromatic heterocycle when G 1 represents a 5- to 8-membered aromatic heterocycle, it is a single ring or a condensed ring, When 1 represents a 5-membered aromatic heterocycle, it has two or more nitrogen atoms in the ring.
- a substituted or unsubstituted 6-membered aromatic heterocycle is preferable, and any one of the substituent groups represented by (3) -1 to (3) -6 in the following general formula (3) Is more preferable, and the substituent group represented by (3) -1 or (3) -2 is most preferable.
- R 6 to R 23 each independently represents a hydrogen atom, a hydroxyl group, an amino group, a linear or branched alkyl group having 1 to 4 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, or 1 to 5 acyl groups, alkenyl groups having 2 to 4 carbon atoms, alkynyl groups having 2 to 4 carbon atoms, alkyloxy groups having 1 to 4 carbon atoms, alkylamino groups having 1 to 8 carbon atoms, alkyl having 2 to 5 carbon atoms An oxycarbonyl group, an amide group having 1 to 5 carbon atoms, an aralkyl group having 7 to 10 carbon atoms, a 5- to 8-membered saturated or unsaturated hydrocarbon ring, a 5- to 8-membered saturated or unsaturated heterocycle It is.
- R 6 to R 23 represent a 5- to 8-membered saturated or unsaturated hydrocarbon ring or heterocyclic ring, it is a monocyclic ring or a condensed ring.
- R 6 to R 23 may have a substituent. Further, a hydrogen atom, a hydroxyl group, an amino group, a linear or branched alkyl group having 1 to 4 carbon atoms, an acyl group having 1 to 5 carbon atoms, an alkyloxy group having 1 to 4 carbon atoms, or an alkyl group having 1 to 8 carbon atoms.
- An alkylamino group, an alkyloxycarbonyl group having 2 to 5 carbon atoms, and an amide group having 1 to 5 carbon atoms are preferable, and among them, a hydrogen atom, a hydroxyl group, an amino group, a methyl group, a methyloxy group, and a methylamino group
- R 6 to R 21 may be bonded to each other to form a ring, in which case R 6 to R 21 form a 5- to 7-membered hydrocarbon ring and a 5- to 7-membered heteroatom ring.
- the present invention includes within its scope tautomers of the azo pigments represented by the general formula (2).
- the general formula (2) is shown in the form of an ultimate structural formula among several tautomers that can be taken in terms of chemical structure, but may be a tautomer other than the described structure, You may use as a mixture containing these tautomers.
- the pigment represented by the general formula (2) may be an azo-hydrazone tautomer represented by the following general formula (2 ′).
- the present invention includes in its scope a compound represented by the following general formula (2 ′), which is a tautomer of the azo pigment represented by the general formula (2).
- R ′ 1 , R ′ 2 , R ′ 3 , Y ′, Z ′ and G 1 are R ′ 1 , R ′ 2 , R ′ 3 , Y ′, Z ′ and G 1 are synonymous.
- the azo pigment represented by the general formula (1) is preferably an azo pigment represented by the following general formula (4).
- n, R 1 , R 2 , R 3 , Y, and Z are each independently synonymous with n, R 1 , R 2 , R 3 , Y, and Z in general formula (1).
- X has the same meaning as X in formula (2).
- any of R 1 , R 2 , R 3 , Y and G 2 represents a 5- to 8-membered saturated or unsaturated heterocycle, it is a single ring or a condensed ring.
- examples of the groups n, R 1 , R 2 , R 3 , Y, and Z are each independently n, R 1 , R 2 , R 3 , Y in the general formula (1).
- Z is synonymous with the examples of groups, and preferred examples are also the same.
- the examples of X are each independently synonymous with the example of X in the general formula (2), and preferred examples are also the same.
- G 2 is preferably a 5- to 8-membered saturated or unsaturated heterocyclic ring, and when G 2 represents a 5- to 8-membered saturated or unsaturated heterocyclic ring, it is a monocyclic ring or a condensed ring. . G 2 may have a substituent. Further, it is more preferably a substituted or unsubstituted 5- to 8-membered aromatic heterocycle, and when G 2 represents a 5- to 8-membered aromatic heterocycle, it is a single ring or a condensed ring. Among them, a substituted or unsubstituted 6-membered aromatic heterocycle is preferable, and the substituent group represented by (3) -1 to (3) -6 in the following general formula (3) The case where any one is selected is most preferable.
- each of R 6 to R 23 independently represents a hydrogen atom, a hydroxyl group, an amino group, a linear or branched alkyl group having 1 to 4 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, An acyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, an alkyloxy group having 1 to 4 carbon atoms, an alkylamino group having 1 to 8 carbon atoms, and 2 carbon atoms An alkyloxycarbonyl group having 5 to 5 carbon atoms, an amide group having 1 to 5 carbon atoms, an aralkyl group having 7 to 10 carbon atoms, a 5- to 8-membered saturated or unsaturated hydrocarbon ring, and a 5- to 8-membered saturated or unsaturated ring.
- R 6 to R 23 represent a 5- to 8-membered saturated or unsaturated hydrocarbon ring or heterocyclic ring, it is a monocyclic ring or a condensed ring.
- R 6 to R 23 can further have a substituent, they may have a substituent or may be unsubstituted.
- it is an alkylamino group, an alkyloxycarbonyl group having 2 to 5 carbon atoms, or an amide group having 1 to 5 carbon atoms, and among them, a hydrogen atom, a hydroxyl group, an amino group, a methyl group, a methyloxy group, a methylamino group Particularly preferred is a group or an acetamide group.
- R 6 to R 21 are nonmetallic atomic groups necessary to form a 5- to 7-membered hydrocarbon ring and a 5- to 7-membered heteroatom ring. And a non-metallic atomic group necessary for forming a 6-membered aromatic hydrocarbon ring or a 6-membered aromatic heteroatom ring is more preferable.
- examples of the heterocyclic group represented by G 2 include a pyridyl group, a pyrazinyl group, a pyridazinyl group, a pyrimidinyl group, a triazinyl group, a quinolinyl group, and an isoquinolinyl group.
- a pyridyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, and a triazinyl group are more preferable, and among them, a pyridyl group, a pyrimidinyl group, and a triazinyl group are particularly preferable.
- G 2 is a group that can further have a substituent
- examples of the substituent are listed as R 1 , R 2 , R 3 , Y, Z, and G in the general formula (1). The same thing as a group can be mentioned.
- the divalent group includes an alkylene group (eg, methylene, ethylene, propylene, butylene, pentylene), an alkenylene group (eg, ethenylene).
- alkylene group eg, methylene, ethylene, propylene, butylene, pentylene
- alkenylene group eg, ethenylene
- Propenylene alkynylene group (eg, ethynylene, propynylene), arylene group (eg, phenylene, naphthylene), divalent heterocyclic group (eg, 6-chloro-1,3,5-triazine-2,4-diyl group, pyrimidine) -2,4-diyl group, pyrimidine-4,6-diyl group, quinoxaline-2,3-diyl group, pyridazine-3,6-diyl), -O-, -CO-, -NR'- (R 'is a hydrogen atom) , alkyl group or aryl group), - S -, - SO 2 -, - SO- , or a combination thereof (e.g., -NHCH 2 CH 2 NH -, - is NHCONH-, etc.) Door is preferable.
- alkynylene group eg, ethyn
- alkylene group, alkenylene group, alkynylene group, arylene group, divalent heterocyclic group, R ′ alkyl group or aryl group may have a substituent.
- the alkyl group and aryl group of R ′ have the same meanings as the substituent examples given when R 1 , R 2 , R 3 , Y, Z, and G are alkyl groups or aryl groups.
- examples of the divalent group include a divalent heterocyclic group (for example, 6-chloro-1,3,5-triazine-2,4-diyl group, pyrimidine-2,4-diyl group, Pyrimidine-4,6-diyl group, quinoxaline-2,3-diyl group, pyridazine-3,6-diyl).
- a divalent heterocyclic group for example, 6-chloro-1,3,5-triazine-2,4-diyl group, pyrimidine-2,4-diyl group, Pyrimidine-4,6-diyl group, quinoxaline-2,3-diyl group, pyridazine-3,6-diyl.
- the divalent heterocyclic group may have a substituent.
- the total carbon number of the divalent linking group is preferably 0 to 20, more preferably 0 to 15, and most preferably 0 to 10.
- the trivalent group includes a trivalent hydrocarbon group, a trivalent heterocyclic group,> N-, or 2
- a combination of valent groups eg,> NCH 2 CH 2 NH—,> NCONH—, etc. is preferred.
- the trivalent group includes a trivalent heterocyclic group (eg, 1,3,5-triazine-2,4,6-triyl group, pyrimidine-2,4,6-triyl). Group).
- the total carbon number of the trivalent linking group is preferably 0 to 20, more preferably 0 to 15, and most preferably 0 to 10.
- a particularly preferable combination as the azo pigment represented by the general formula (4) of the present invention includes the following (A) to (G).
- n is an integer of 2 to 4, preferably an integer of 2 to 3, and more preferably 2.
- R 1 and R 2 are each independently a hydrogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, a linear or branched alkenyl group having 2 to 6 carbon atoms, or 2 to 6 carbon atoms.
- a linear or branched alkynyl group a substituted or unsubstituted 5- to 8-membered aryl group, a substituted or unsubstituted 5- to 8-membered heterocyclic group, among which a hydrogen atom, carbon It is more preferably a linear or branched alkyl group having 1 to 4 carbon atoms, a substituted or unsubstituted 5- to 8-membered aryl group, a linear or branched alkyl group having 1 to 4 carbon atoms, A substituted 5- to 6-membered aryl group is more preferable, and a linear or branched alkyl group having 1 to 4 carbon atoms is particularly preferable.
- the linear or branched alkyl group having 1 to 4 carbon atoms a methyl group and a t-butyl group are preferable, and a methyl group is more preferable.
- (C) Y is a hydrogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, a linear or branched alkenyl group having 2 to 6 carbon atoms, or a linear or branched chain having 2 to 6 carbon atoms.
- the aryl group is a 5- to 8-membered aryl group, more preferably a hydrogen atom, a methyl group, or a substituted or unsubstituted 5- to 6-membered aryl group, most preferably a hydrogen atom.
- R 3 is preferably a hydrogen atom or a monovalent substituent, more preferably a hydrogen atom, a methyl group, an ethyl group, an ethenyl group or an ethynyl group, and particularly a hydrogen atom. The case is most preferred.
- (E) Z is a cyano group, an acyl group having 2 to 6 carbon atoms, an acyloxy group having 2 to 6 carbon atoms, a carbamoyl group having 1 to 8 carbon atoms, an alkyloxycarbonyl group having 2 to 8 carbon atoms, or 7 carbon atoms.
- aryloxycarbonyl group nitro group, C1-C6 alkylsulfinyl group, C6-C10 arylsulfinyl group, C1-C6 alkylsulfonyl group, C6-C10 Arylsulfonyl group, sulfamoyl group having 0 to 9 carbon atoms, halogenated alkyl group having 1 to 6 carbon atoms, halogenated aryl group having 1 to 6 carbon atoms, halogenated alkyloxy group having 1 to 6 carbon atoms, carbon number A halogenated alkylthio group having 1 to 6 carbon atoms, a halogenated aryloxy group having 6 to 12 carbon atoms, and a 5- to 8-membered heterocyclic group are preferable.
- a cyano group and an aryl group having 2 to 8 carbon atoms are preferable.
- it is a oxy group such as a killioxycarbonyl group, charcoal, BR> F alkylsulfonyl group having 1 to 6 carbon atoms, arylsulfonyl group having 6 to 10 carbon atoms, or sulfamoyl group having 0 to 8 carbon atoms, most preferably a cyano group. is there.
- X is preferably a heteroatom, more preferably a nitrogen atom, an oxygen atom, a sulfur atom or a selenium atom, particularly preferably a nitrogen atom, an oxygen atom or a sulfur atom. Is most preferable.
- G 2 is preferably a 5- to 8-membered saturated or unsaturated heterocycle, and when G 2 represents a 5- to 8-membered saturated or unsaturated heterocycle, it is monocyclic or fused It is a ring. Further, when G 2 can further have a substituent, it may have a substituent or may be unsubstituted. When G 2 represents a 5-membered unsaturated heterocyclic ring, it has two or more nitrogen atoms in the ring.
- a substituted or unsubstituted 5- to 8-membered aromatic heterocycle when G 2 represents a 5- to 8-membered aromatic heterocycle, it is a single ring or a condensed ring, When 2 represents a 5-membered aromatic heterocycle, it has two or more nitrogen atoms in the ring.
- a substituted or unsubstituted 6-membered aromatic heterocycle is preferable, and any one of the substituent groups represented by (3) -1 to (3) -6 in the following general formula (3) Is more preferable, and the substituent group represented by (3) -1 or (3) -2 is most preferable.
- R 6 to R 23 are each independently a hydrogen atom, a hydroxyl group, an amino group, a linear or branched alkyl group having 1 to 4 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, or an acyl having 1 to 5 carbon atoms.
- R 6 to R 23 represent a 5- to 8-membered saturated or unsaturated hydrocarbon ring or heterocyclic ring, it is a monocyclic ring or a condensed ring.
- R 6 to R 23 may have a substituent. Further, a hydrogen atom, a hydroxyl group, an amino group, a linear or branched alkyl group having 1 to 4 carbon atoms, an acyl group having 1 to 5 carbon atoms, an alkyloxy group having 1 to 4 carbon atoms, or an alkyl group having 1 to 8 carbon atoms.
- R 6 to R 21 may form a bond with each other, in which case R 6 to R 21 are necessary to form a 5- to 7-membered hydrocarbon ring and a 5- to 7-membered heteroatom ring. It is preferably a nonmetallic atomic group, and more preferably a nonmetallic atomic group necessary for forming a 6-membered aromatic hydrocarbon ring or a 6-membered aromatic heteroatom ring.
- the present invention includes in its scope tautomers of the azo pigments represented by the general formula (4).
- the general formula (4) is shown in the form of an extreme structural formula among several tautomers that can be taken in terms of chemical structure, but may be a tautomer other than the structure described, You may use as a mixture containing these tautomers.
- the pigment represented by the general formula (4) may be an azo-hydrazone tautomer represented by the following general formula (4 ′).
- the present invention includes in its scope a compound represented by the following general formula (4 ′), which is a tautomer of the azo pigment represented by the general formula (4).
- n, R 1 , R 2 , R 3 , X, Y, Z, G 2 are n, R 1 , R 2 , R 3 , X, Y, a Z, and G 2 synonymous.
- the azo pigment represented by the general formula (2) is preferably an azo pigment represented by the following general formula (5).
- R ′ 1 , R ′ 2 , Y ′, and Z ′ are each independently synonymous with R ′ 1 , R ′ 2 , Y ′, and Z ′ in General Formula (2).
- G 3 represents a non-metallic atomic group that forms a 5- to 6-membered nitrogen-containing aromatic heterocyclic ring, and when G 3 represents a 5- to 6-membered nitrogen-containing aromatic heterocyclic ring, G 3 may have a substituent, and when G 3 represents a 5-membered nitrogen-containing aromatic heterocycle, it has two or more nitrogen atoms in the ring.
- R ′ 1 , R ′ 2 , Y ′, Z ′, and G 3 in the general formula (5) will be described in more detail.
- R '1, R' 2, Y ' Examples of groups of, R each independently the above general formula (2)' are the same as examples of 1, R '2, Y' , and preferred examples thereof are also the same .
- Z ′ is independently synonymous with the example of Z in the general formula (1), and preferred examples are also the same.
- G 3 is preferably a 5- to 6-membered nitrogen-containing aromatic heterocycle, and when G 3 represents a 5- to 6-membered nitrogen-containing aromatic heterocycle, a single ring Or it is a condensed ring. G 3 may further have a substituent, and may have a substituent or may be unsubstituted. Of these, a substituted or unsubstituted 6-membered nitrogen-containing aromatic heterocycle is more preferred, and in particular, the substitution represented by (3) -1 to (3) -6 in the following general formula (3) Most preferably, it is selected from any one of the group groups.
- each of R 6 to R 23 independently represents a hydrogen atom, a hydroxyl group, an amino group, a linear or branched alkyl group having 1 to 4 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, An acyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, an alkyloxy group having 1 to 4 carbon atoms, an alkylamino group having 1 to 8 carbon atoms, and 2 carbon atoms An alkyloxycarbonyl group having 5 to 5 carbon atoms, an amide group having 1 to 5 carbon atoms, an aralkyl group having 7 to 10 carbon atoms, a 5- to 8-membered saturated or unsaturated hydrocarbon ring, and a 5- to 8-membered saturated or unsaturated ring.
- R 6 to R 23 represent a 5- to 8-membered saturated or unsaturated hydrocarbon ring or heterocyclic ring, it is a monocyclic ring or a condensed ring.
- R 6 to R 23 may have a substituent. Further, a hydrogen atom, a hydroxyl group, an amino group, a linear or branched alkyl group having 1 to 4 carbon atoms, an acyl group having 1 to 5 carbon atoms, an alkyloxy group having 1 to 4 carbon atoms, or an alkyl group having 1 to 8 carbon atoms.
- An alkylamino group, an alkyloxycarbonyl group having 2 to 5 carbon atoms, and an amide group having 1 to 5 carbon atoms are preferable, and among them, a hydrogen atom, a hydroxyl group, an amino group, a methyl group, a methyloxy group, and a methylamino group
- a hydrogen atom, a hydroxyl group, an amino group, a methyl group, a methyloxy group, and a methylamino group is preferred.
- R 6 to R 21 may form a bond with each other, and in this case, R 6 to R 21 are necessary to form a 5- to 7-membered hydrocarbon ring and a 5- to 7-membered heterocycle.
- R 6 to R 21 are necessary to form a 5- to 7-membered hydrocarbon ring and a 5- to 7-membered heterocycle.
- a case of a nonmetallic atomic group is preferred, and a case of forming a 6-membered aromatic hydrocarbon ring or a 6-membered aromatic heterocycle is further preferred.
- examples of the heterocyclic group represented by G 3 include a pyridyl group, a pyrazinyl group, a pyridazinyl group, a pyrimidinyl group, a triazinyl group, a quinolinyl group, and an isoquinolinyl group.
- a pyridyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, and a triazinyl group are more preferable, and among them, a pyridyl group, a pyrimidinyl group, and a triazinyl group are particularly preferable.
- a particularly preferred combination as the azo pigment represented by the general formula (5) of the present invention includes the following (A) to (D).
- R ′ 1 and R ′ 2 each independently represent a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, or an alkynyl group having 2 to 4 carbon atoms.
- the aralkyl group having 7 to 9 carbon atoms, a 5- to 8-membered saturated or unsaturated hydrocarbon ring group, and a 5- to 8-membered saturated or unsaturated heterocyclic group are preferable.
- R ′ 1 or R ′ 2 represents a 5- to 8-membered saturated or unsaturated hydrocarbon ring group or a 5- to 8-membered saturated or unsaturated heterocyclic group, monocyclic or compound When it is a ring and can have a substituent, it may have a substituent or may be unsubstituted.
- a hydrogen atom a linear or branched alkyl group having 1 to 4 carbon atoms, a 5- to 8-membered saturated or unsaturated hydrocarbon ring group, a 5- to 8-membered saturated or unsaturated heterocyclic group
- R ′ 1 or R ′ 2 represents a 5- to 8-membered saturated or unsaturated hydrocarbon ring group or a 5- to 8-membered saturated or unsaturated heterocyclic group
- it is a monocyclic ring or a condensed ring and can have a substituent, it may have a substituent or may be unsubstituted.
- a methyl group, a t-butyl group, a substituted or unsubstituted 5- to 6-membered aryl group, and a substituted or unsubstituted 5- to 6-membered aromatic heterocyclic group are most preferable.
- Y ′ is a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, or an aralkyl having 7 to 9 carbon atoms.
- the group is preferably a 5- to 8-membered saturated or unsaturated hydrocarbon ring group or a 5- to 8-membered saturated or unsaturated heterocyclic group.
- Y ′ represents a 5- to 8-membered saturated or unsaturated hydrocarbon ring group or a 5- to 8-membered saturated or unsaturated heterocyclic group, it is a single ring or a condensed ring and has a substituent.
- Y ′ represents a 5- to 8-membered saturated or unsaturated hydrocarbon ring group or a 5- to 8-membered saturated or unsaturated heterocyclic group, it is a single ring or a condensed ring and has a substituent. If possible, it may have a substituent or may be unsubstituted.
- a hydrogen atom, a methyl group, a t-butyl group, a substituted or unsubstituted 6-membered aromatic hydrocarbon ring group, or a substituted or unsubstituted 6-membered aromatic heterocyclic group is particularly preferable.
- (C) Z ′ is a cyano group, an acyl group having 2 to 6 carbon atoms, an acyloxy group having 2 to 6 carbon atoms, a carbamoyl group having 1 to 8 carbon atoms, an alkyloxycarbonyl group having 2 to 8 carbon atoms, or a carbon number 7-12 aryloxycarbonyl group, nitro group, C1-C6 alkylsulfinyl group, C6-C10 arylsulfinyl group, C1-C6 alkylsulfonyl group, C6-C6 10 arylsulfonyl groups, sulfamoyl groups having 0 to 9 carbon atoms, halogenated alkyl groups having 1 to 6 carbon atoms, halogenated aryl groups having 1 to 6 carbon atoms, halogenated alkyloxy groups having 1 to 6 carbon atoms, carbon A halogenated alkylthio group having 1 to 6 carbon atoms
- a cyano group and a carbon group having 2 to 8 carbon atoms are preferable.
- G 3 is preferably a 5- to 6-membered nitrogen-containing aromatic heterocycle, and when G 3 represents a 5- to 6-membered nitrogen-containing aromatic heterocycle, it is a single ring or a condensed ring .
- G 3 may have a substituent.
- a substituted or unsubstituted 6-membered nitrogen-containing aromatic heterocycle is more preferable, and a monovalent valent group represented by (3) -1 to (3) -6 in the above general formula (3). Most preferred is any group selected from the group of substituents.
- each of R 6 to R 23 independently represents a hydrogen atom, a hydroxyl group, an amino group, a linear or branched alkyl group having 1 to 4 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, An acyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, an alkyloxy group having 1 to 4 carbon atoms, an alkylamino group having 1 to 8 carbon atoms, and 2 carbon atoms An alkyloxycarbonyl group having 5 to 5 carbon atoms, an amide group having 1 to 5 carbon atoms, an aralkyl group having 7 to 10 carbon atoms, a 5- to 8-membered saturated or unsaturated hydrocarbon ring, and a 5- to 8-membered saturated or unsaturated ring.
- R 6 to R 23 represent a 5- to 8-membered saturated or unsaturated hydrocarbon ring or heterocyclic ring, it is a monocyclic ring or a condensed ring.
- R 6 to R 23 may have a substituent. Further, a hydrogen atom, a hydroxyl group, an amino group, a linear or branched alkyl group having 1 to 4 carbon atoms, an acyl group having 1 to 5 carbon atoms, an alkyloxy group having 1 to 4 carbon atoms, or an alkyl group having 1 to 8 carbon atoms.
- R 6 to R 21 may form a bond with each other, in which case R 6 to R 21 are necessary to form a 5- to 7-membered hydrocarbon ring and a 5- to 7-membered heteroatom ring. It is preferably a nonmetallic atomic group, and more preferably a nonmetallic atomic group necessary for forming a 6-membered aromatic hydrocarbon ring or a 6-membered aromatic heteroatom ring.
- the present invention includes in its scope tautomers of the azo pigments represented by the general formula (5).
- the general formula (5) is shown in the form of an ultimate structural formula among several tautomers that can be taken in terms of chemical structure, but may be a tautomer other than the described structure. You may use as a mixture containing these tautomers.
- the pigment represented by the general formula (5) may be an azo-hydrazone tautomer represented by the following general formula (5 ′).
- the present invention includes in its scope a compound represented by the following general formula (5 ′), which is a tautomer of the azo pigment represented by the general formula (5).
- the azo pigment represented by the general formula (2) is preferably an azo pigment represented by the following general formula (6).
- R '1, R' 2, Y ', Z' are each R in the general formula (5) '1, R' 2, Y ', Z' has the same meaning as the preferred
- the combination is the same: G 4 represents a non-metallic atomic group that forms a 6-membered nitrogen-containing aromatic heterocyclic group, and the heterocyclic ring may be monocyclic or condensed.
- azo-hydrazone tautomers can be considered.
- examples of the general formulas of particularly preferable azo pigments include the above general formula ( The azo pigment represented by 6) can be mentioned.
- this structure is preferable is that a nitrogen atom, a hydrogen atom and a hetero atom (oxygen atom of carbonyl group or nitrogen atom of amino group) constituting the heterocycle contained in the azo pigment structure as represented by the general formula (6) It is easy to form a cross-hydrogen bond (intramolecular hydrogen bond) in at least one molecule.
- the planarity of the molecule is increased, the intramolecular / intermolecular interaction is further improved, and the crystallinity of the azo pigment represented by the general formula (6) is increased (it is easy to form a higher order structure), This is the most preferable example because the light fastness, heat stability, wet heat stability, water resistance, gas resistance and / or solvent resistance, which are required performance as a pigment, are greatly improved.
- the present invention also relates to an azo compound represented by the general formula (2), a tautomer thereof, a salt or a hydrate thereof.
- R ′ 1 , R ′ 2 and Y ′ are each independently a hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, or 2 to 4 alkynyl groups, acyl groups of 1 to 5 carbon atoms, aralkyl groups of 7 to 9 carbon atoms, 5- to 8-membered saturated or unsaturated hydrocarbon ring groups, 5- to 8-membered saturated or unsaturated rings Represents a heterocyclic group, R ′ 3 represents a hydrogen atom or a monovalent substituent, Z ′ represents an electron-withdrawing group having a Hammett ⁇ p value of 0.2 or more, and X represents a carbon bonded to the pyrazole ring.
- G 1 represents an atomic group forming a 5- to 8-membered saturated or unsaturated hetero ring: R ′ 1 , R ′ 2 , R ′ 3 , Y ′, G 1 If any of a heterocyclic saturated or unsaturated 5- to 8-membered ring, .R represents a single or fused ring '1, R' 2, R '3, ', If G 1 represents a 5-membered heterocycle ring unsaturated, having two or more nitrogen atoms in the ring.)
- G 1 in the general formula (2) is selected from any of the substituent groups represented by the following general formulas (3) -1 to (3) -6 It is preferable that
- R 6 to R 23 each independently represents a hydrogen atom or a substituent.
- R 6 to R 21 may be bonded to each other to form a ring.
- examples of the substituent groups represented by the general formulas (3) -1 to (3) -6 and preferred combinations of substituents are represented by the general formula (2).
- the present invention also relates to an azo compound represented by the general formula (4), a tautomer thereof, a salt or a hydrate thereof.
- G 2 in the general formula (4) is a 1 to 3 valence represented by (3) -1 to (3) -6 in the following general formula (3). It is preferably any group selected from the group of substituents.
- R 6 to R 23 each independently represents a hydrogen atom or a substituent.
- R 6 to R 21 may be bonded to each other to form a ring.
- the salt, hydrate and tautomerism of the azo compound represented by the general formula (2) and general formula (4) of the present invention include the salt, hydrate and tautomerism of the azo pigment of the present invention.
- the novel azo compound of the present invention is useful as an azo pigment.
- the dispersion of the present invention preferably contains at least one tautomer, salt or hydrate of the azo compound represented by formula (2) or (4).
- azo pigment and the pigment dispersion represented by the general formulas (1), (2), (4), (5), and (6), and the general formulas (2) and (4) examples of the azo compounds are shown below, but the azo pigments and pigment dispersions and azo compounds used in the present invention are not limited to the following examples.
- the pigments represented by the general formulas (1), (2), (4), (5) and (6) of the present invention have chemical structural formulas of the general formulas (1), (2), (4), ( 5) or (6) or a tautomer thereof may be used, and any crystal form pigment called polymorph may be used.
- Crystal polymorphs refer to the same chemical composition but different arrangement of building blocks (molecules or ions) in the crystal.
- the crystal structure determines the chemical and physical properties, and each polymorph can be distinguished by its rheology, color, and other color characteristics. Different polymorphs can also be confirmed by X-Ray Diffraction (powder X-ray diffraction measurement results) and X-Ray Analysis (X-ray crystal structure analysis results).
- any polymorph may be used, and two kinds of polymorphs may be used.
- the mixture of the above polymorphs may be sufficient, it is preferable to have a single crystal form as a main component.
- the polymorph is not mixed, and the content of the azo pigment having a single crystal type is 70% to 100%, preferably 80% to 100%, more preferably 90% with respect to the entire azo pigment. To 100%, more preferably 95% to 100, particularly preferably 100%.
- an azo pigment having a single crystal form as a main component, the regularity of the dye molecule arrangement is improved, the intramolecular / intermolecular interaction is strengthened, and a higher-order three-dimensional network is easily formed. .
- it is preferable in terms of performance required for pigments such as improvement of hue, light fastness, heat fastness, humidity fastness, oxidizing gas fastness and solvent resistance.
- the mixing ratio of crystal polymorphs in azo pigments is based on solid physicochemical measurements such as single crystal X-ray crystal structure analysis, powder X-ray diffraction (XRD), crystal micrograph (TEM), IR (KBr method), etc. I can confirm.
- the above-described tautomerism and / or crystal polymorphism can be controlled by the production conditions during the coupling reaction.
- the azo pigment represented by the general formulas (1), (2), (4), (5) and (6) has an acid group
- a part or all of the acid group is present.
- It may be of a salt type, and a salt type pigment and a free acid type pigment may be mixed.
- the salt type include salts of alkali metals such as Na, Li and K, ammonium salts optionally substituted with an alkyl group or hydroxyalkyl group, and organic amine salts.
- organic amines include lower alkyl amines, hydroxy substituted lower alkyl amines, carboxy substituted lower alkyl amines, and polyamines having 2 to 10 alkyleneimine units having 2 to 4 carbon atoms.
- the type is not limited to one type, and a plurality of types may be mixed.
- the salt type include salts of alkali metals such as Na, Li and K, ammonium salts optionally substituted with an alkyl group or hydroxyalkyl group, and organic amine salts.
- organic amines include lower alkyl amines, hydroxy substituted lower alkyl amines, carboxy substituted lower alkyl amines, and polyamines having 2 to 10 alkyleneimine units having 2 to 4 carbon atoms.
- the type is not limited to one type, and a plurality of types may be mixed.
- the plurality of acid groups when a plurality of acid groups are contained in one molecule, the plurality of acid groups may be salt type or acid type and may be different from each other.
- the azo pigment represented by the general formulas (1), (2), (4), (5) and (6) may be a hydrate containing water molecules in the crystal.
- the azo pigment of the present invention can be synthesized, for example, by reacting a diazonium salt prepared by a known method with a diazo component of the general formula (7) with a coupling component of the general formula (8).
- Y, Z and G have the same meanings as Y, Z and G in the general formula (1), respectively.
- R 1, R 2, R 3 are each synonymous with R 1, R 2, R 3 in the general formula (1).
- the heterocyclic amine (diazo component) represented by the amino form of the general formula (7) can be obtained as a commercially available product, but is generally known and commonly used, for example, Japanese Patent No. 4022221. , Can be produced by the method described in.
- the diazonium chlorination reaction of a heterocyclic amine is performed, for example, by reacting with a reagent such as sodium nitrite, nitrosylsulfuric acid, isoamyl nitrite or the like in an acidic solvent such as sulfuric acid, phosphoric acid, and acetic acid for 10 minutes to 6 hours at a temperature of 15 ° C. Can be done.
- the coupling reaction is performed by reacting the diazonium salt obtained by the above-described method with the compound represented by the general formula (8) at 40 ° C. or lower, preferably 25 ° C. or lower for about 10 minutes to 12 hours. Can do.
- the synthesis method in the case where n in the general formula (1) and the general formula (4) is 2 or more is the substitution method in R 1 to R 3 , Y, Z, G, etc. in the general formula (7) or the general formula (8).
- Raw materials into which possible divalent, trivalent or tetravalent substituents are introduced can be synthesized and synthesized in the same manner as in the above scheme.
- crystals are precipitated in this way, but in general, water or an alcohol solvent is added to the reaction solution to precipitate the crystals, and the crystals can be collected by filtration. it can.
- an alcohol solvent, water or the like can be added to the reaction solution to precipitate crystals, and the precipitated crystals can be collected by filtration.
- the crystals collected by filtration can be washed and dried as necessary to obtain an azo pigment represented by the general formula (1).
- the synthesis methods of the general formulas (2), (5), and (6) are the same as Y ′, Z ′, G 1 (or G 3 ) in the general formula (7). , G 4 ), and R 1 , R 2 , R 3 in the general formula (8) are read as R ′ 1 , R ′ 2 , R ′ 3 respectively (where R ′ 1 , R ′ 2 , R ′ 3, Y ′, Z ′, G 1 , G 3 , G 4 are R ′ 1 , R ′ 2 , R in the general formulas (2), (5) and (6), respectively. '3, Y', Z ' , the same meaning as G 1, G 3, G 4 ).
- the compounds represented by the above general formulas (1), (2), (4), (5) and (6) are obtained as crude pigments by the above production method, but when used as the pigment dispersion of the present invention, It is desirable to perform post-processing.
- post-processing methods include, for example, solvent particle milling process such as solvent salt milling, salt milling, dry milling, solvent milling, acid pasting, solvent heat treatment, etc., resin, surfactant and dispersant. The surface treatment process by etc. is mentioned.
- the compounds represented by the general formulas (1), (2), (4), (5) and (6) of the present invention are preferably subjected to a solvent heat treatment as a post-treatment.
- the solvent used in the solvent heat treatment include water, aromatic hydrocarbon solvents such as toluene and xylene, halogenated hydrocarbon solvents such as chloroform, chlorobenzene and o-dichlorobenzene, methanol, ethanol, isopropanol, Examples include alcohol solvents such as isobutanol, polar aprotic organic solvents such as N, N-dimethylformamide, N, N-dimethylacetamide, and N-methyl-2-pyrrolidone, glacial acetic acid, pyridine, and mixtures thereof. It is done.
- the average particle diameter of the pigment is preferably adjusted to 0.01 ⁇ m to 1 ⁇ m by these post-treatments.
- the compounds represented by the general formulas (1), (2), (4), (5) and (6) of the present invention are preferably subjected to solvent heat treatment and / or solvent salt milling as post-treatment.
- the solvent used in the solvent heat treatment include water, aromatic hydrocarbon solvents such as toluene and xylene, halogenated hydrocarbon solvents such as chlorobenzene and o-dichlorobenzene, and alcohols such as isopropanol and isobutanol.
- examples thereof include a solvent, polar aprotic organic solvents such as N, N-dimethylformamide, N, N-dimethylacetamide, and N-methyl-2-pyrrolidone, glacial acetic acid, pyridine, and mixtures thereof.
- An inorganic or organic acid or base may be further added to the solvents mentioned above.
- the temperature of the solvent heat treatment varies depending on the desired primary particle size of the pigment, but is preferably 40 to 150 ° C, more preferably 60 to 100 ° C.
- the treatment time is preferably 30 minutes to 24 hours.
- solvent salt milling for example, a crude azo pigment, an inorganic salt, and an organic solvent that does not dissolve the crude azo pigment are charged into a kneader and kneaded and ground therein.
- the inorganic salt a water-soluble inorganic salt can be preferably used.
- an inorganic salt such as sodium chloride, potassium chloride, sodium sulfate is preferably used.
- an inorganic salt having an average particle size of 0.5 to 50 ⁇ m.
- the amount of the inorganic salt used is preferably 3 to 20 times by mass, more preferably 5 to 15 times by mass with respect to the crude azo pigment.
- the organic solvent a water-soluble organic solvent can be suitably used, and the solvent easily evaporates due to a temperature rise during kneading, so that a high boiling point solvent is preferable from the viewpoint of safety.
- organic solvents examples include diethylene glycol, glycerin, ethylene glycol, propylene glycol, liquid polyethylene glycol, liquid polypropylene glycol, 2- (methoxymethoxy) ethanol, 2-butoxyethanol, 2- (isopentyloxy) ethanol, 2- (hexyloxy) ethanol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol, triethylene glycol monomethyl ether, 1-methoxy-2-propanol, 1-ethoxy-2-propanol, di Propylene glycol, dipropylene glycol monomethyl ether, dipropylene glycol monomethyl ether, dipropylene Glycol or mixtures thereof.
- the amount of the water-soluble organic solvent used is preferably 0.1 to 5 times by mass with respect to the crude azo pigment.
- the kneading temperature is preferably 20 to 130 ° C, particularly preferably 40 to 110 ° C.
- a kneader for example, a kneader or a mix muller can be used.
- the pigment dispersion of the present invention comprises at least one of the azo pigments, tautomers, salts or hydrates represented by the general formulas (1), (2), (4), (5) and (6). It is characterized by including 1 type. Thereby, it can be set as the pigment dispersion excellent in chromatic characteristics, durability, and dispersion stability.
- the pigment dispersion of the present invention may be aqueous or non-aqueous, but is preferably an aqueous pigment dispersion.
- aqueous liquid in which the pigment is dispersed in the aqueous pigment dispersion of the present invention a mixture containing water as a main component and optionally adding a hydrophilic organic solvent can be used.
- hydrophilic organic solvent examples include alcohols such as methanol, ethanol, propanol, isopropanol, butanol, isobutanol, sec-butanol, t-butanol, pentanol, hexanol, cyclohexanol, benzyl alcohol, ethylene glycol, diethylene glycol, and the like.
- Polyhydric alcohols such as triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, butylene glycol, hexanediol, pentanediol, glycerin, hexanetriol, thiodiglycol, ethylene glycol monomethyl ether, BR> E , Ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol Nomethyl ether, diethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monobutyl ether, dipropylene glycol monomethyl ether, triethylene glycol monomethyl ether, ethylene glycol diacetate, ethylene glycol monomethyl ether acetate triethylene glycol monoethyl ether, ethylene glycol mono Glycol derivatives such as phenyl ether, ethanolamine, diethanolamine, triethanolamine, N-methyldiethanolamine
- the aqueous pigment dispersion of the present invention may contain an aqueous resin.
- the aqueous resin include a water-soluble resin that dissolves in water, a water-dispersible resin that disperses in water, a colloidal dispersion resin, or a mixture thereof.
- Specific examples of the aqueous resin include acrylic, styrene-acrylic, polyester, polyamide, polyurethane, and fluorine resins.
- a surfactant and a dispersant may be used in order to improve the dispersion of the pigment and the quality of the image quality.
- the surfactant include anionic, nonionic, cationic, and amphoteric surfactants. Any surfactant may be used, but anionic or nonionic surfactants may be used. It is preferable to use it.
- the anionic surfactant include fatty acid salts, alkyl sulfate esters, alkylbenzene sulfonates, alkyl naphthalene sulfonates, dialkyl sulfosuccinates, alkyl diaryl ether disulfonates, alkyl phosphates, and polyoxyethylene alkyls.
- Examples thereof include ether sulfate, polyoxyethylene alkylaryl ether sulfate, naphthalene sulfonic acid formalin condensate, polyoxyethylene alkyl phosphate ester salt, glycerol borate fatty acid ester, polyoxyethylene glycerol fatty acid ester and the like.
- Nonionic surfactants include, for example, polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene oxypropylene block copolymer, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, glycerin Examples include fatty acid esters, polyoxyethylene fatty acid esters, polyoxyethylene alkylamines, fluorine-based resins, and silicon-based materials.
- the non-aqueous pigment dispersion is obtained by dispersing the pigment represented by the general formulas (1), (2), (4), (5) and (6) in a non-aqueous vehicle.
- Resins used in non-aqueous vehicles are, for example, petroleum resins, casein, shellac, rosin modified maleic resin, rosin modified phenolic resin, nitrocellulose, cellulose acetate butyrate, cyclized rubber, chlorinated rubber, oxidized rubber, hydrochloric acid rubber , Phenolic resin, alkyd resin, polyester resin, unsaturated polyester resin, amino resin, epoxy resin, vinyl resin, vinyl chloride, vinyl chloride-vinyl acetate copolymer, acrylic resin, methacrylic resin, polyurethane resin, silicone resin, fluorine resin , Drying oil, synthetic drying oil, styrene / maleic acid resin, styrene / acrylic resin, polyamide resin, polyimide resin, benzoguanamine resin, melamine resin,
- Examples of the solvent used in the non-aqueous vehicle include aromatic solvents such as toluene, xylene, and methoxybenzene, and acetates such as ethyl acetate, butyl acetate, propylene glycol monomethyl ether acetate, and propylene glycol monoethyl ether acetate.
- aromatic solvents such as toluene, xylene, and methoxybenzene
- acetates such as ethyl acetate, butyl acetate, propylene glycol monomethyl ether acetate, and propylene glycol monoethyl ether acetate.
- Solvents propionate solvents such as ethoxyethyl propionate, alcohol solvents such as methanol and ethanol, ether solvents such as butyl cellosolve, propylene glycol monomethyl ether, diethylene glycol ethyl ether, diethylene glycol dimethyl ether, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, etc.
- Ketone solvents such as hexane, N, N-dimethylformamide, N, N-dimethylacetamide , ⁇ -butyrolactam, N-methyl-2-pyrrolidone, aniline, pyridine and other nitrogen compound solvents, ⁇ -butyrolactone and other lactone solvents, carbamates such as a 48:52 mixture of methyl carbamate and ethyl carbamate Acid ester etc. are mentioned.
- the pigment dispersion of the present invention can be obtained by dispersing the azo pigment and an aqueous or non-aqueous medium using a dispersing device.
- a dispersing device examples include a ball mill, a sand mill, a bead mill, a roll mill, a jet mill, an attritor, an ultrasonic disperser, and a disper.
- the volume average particle diameter of the pigment contained in the pigment dispersion is preferably 10 nm or more and 250 nm or less.
- the volume average particle diameter of the pigment particles refers to the particle diameter of the pigment itself or the particle diameter to which the additive has adhered when an additive such as a dispersant is attached to the colorant.
- a Nanotrac UPA particle size analyzer (UPA-EX150; manufactured by Nikkiso Co., Ltd.) was used as a measuring device for the volume average particle diameter of the pigment. The measurement was performed according to a predetermined measuring method by putting 3 ml of the pigment dispersion in a measuring cell. As parameters to be input at the time of measurement, the ink viscosity was used as the viscosity, and the pigment density was used as the density of the dispersed particles.
- a more preferable volume average particle size is 20 nm or more and 250 nm or less, and further preferably 20 nm or more and 230 nm or less.
- the number average particle size of the particles in the pigment dispersion is less than 10 nm, there are cases where the storage stability cannot be ensured, whereas when it exceeds 250 nm, the optical density may be lowered.
- the concentration of the pigment contained in the pigment dispersion of the present invention is preferably in the range of 1 to 35% by mass, more preferably in the range of 2 to 25% by mass. If the density is less than 1% by mass, sufficient image density may not be obtained when the pigment dispersion is used alone as the ink. If the concentration exceeds 35% by mass, the dispersion stability may decrease.
- the dispersion containing the azo compound of the present invention can also contain the above-mentioned components constituting the pigment dispersion, and the preferred concentration of the azo compound contained in the dispersion is the same as that described for the pigment dispersion. is there.
- azo pigments and azo compounds of the present invention include image recording materials for forming images, particularly color images, and specifically, thermal recording including ink jet recording materials described in detail below.
- a solid-state image pickup device such as a CCD
- a color filter for recording / reproducing a color image used in a display such as an LCD or PDP
- a dyeing solution for dyeing various fibers.
- the colored composition of the present invention means a colored composition containing at least one azo pigment or azo compound of the present invention.
- the coloring composition of the present invention can contain a medium, but when a solvent is used as the medium, it is particularly suitable as an ink for inkjet recording.
- the coloring composition of the present invention can be produced by using a lipophilic medium or an aqueous medium as a medium and dispersing the azo pigment of the present invention in the medium. Preferably, an aqueous medium is used.
- the coloring composition of the present invention includes an ink composition excluding a medium.
- the coloring composition of the present invention may contain other additives as necessary within a range that does not impair the effects of the present invention.
- additives include, for example, anti-drying agents (wetting agents), anti-fading agents, emulsion stabilizers, penetration enhancers, ultraviolet absorbers, preservatives, anti-fungal agents, pH adjusters, surface tension adjusters, Known additives (described in JP-A No. 2003-306623) such as foaming agents, viscosity modifiers, dispersants, dispersion stabilizers, rust preventives, chelating agents and the like can be mentioned. These various additives are directly added to the ink liquid in the case of water-based ink. In the case of oil-based inks, it is common to add to the dispersion after preparation of the azo pigment dispersion, but it may be added to the oil phase or water phase at the time of preparation.
- the ink for inkjet recording of the present invention will be described.
- the above-described dispersion is used for the inkjet recording ink of the present invention (hereinafter sometimes referred to as “ink”).
- it adjusts by mixing a water-soluble solvent, water, etc.
- the dispersion of the present invention may be used as it is.
- the content ratio of the dispersion in the ink of the present invention is preferably in the range of 1 to 100% by mass, preferably 3 to 20% by mass in consideration of the hue, color density, and again transparency of the image formed on the recording medium.
- a range is particularly preferable, and a range of 3 to 10% by mass is most preferable.
- the azo pigment or azo compound of the present invention is preferably contained in an amount of 0.1 to 20 parts by mass, more preferably 0.2 to 10 parts by mass in 100 parts by mass of the ink of the present invention.
- the content is preferably 1 to 10 parts by mass.
- other pigments may be used in combination with the pigment of the present invention. When two or more kinds of pigments are used in combination, the total content of the pigments is preferably within the above range.
- the ink of the present invention can be used not only for forming a single color image but also for forming a full color image.
- a magenta color ink, a cyan color ink, and a yellow color ink can be used, and a black color ink may be further used to adjust the color tone.
- pigments can be used simultaneously in addition to the pigment of the present invention.
- yellow pigments that can be applied include C.I. I. P. Y. -74, C.I. I. P. Y. -128, C.I. I. P. Y. -155, C.I. I. P. Y. -213, and applicable magenta pigments include C.I. I. P. V. -19, C.I. I. P. R. -122, and examples of applicable cyan pigments include C.I. I. P. B. -15: 3, C.I. I. P. B. -15: 4, and any of these can be used separately.
- Applicable black materials include disazo, trisazo, and tetraazo pigments, as well as carbon black dispersions.
- polyhydric alcohols As the water-soluble solvent used in the ink jet recording ink of the present invention, polyhydric alcohols, polyhydric alcohol derivatives, nitrogen-containing solvents, alcohols, sulfur-containing solvents and the like are used. Specific examples include polyhydric alcohols such as ethylene glycol, diethylene glycol, propylene glycol, butylene glycol, triethylene glycol, 1,5-pentanediol, 1,2,6-hexanetriol, and glycerin.
- polyhydric alcohols such as ethylene glycol, diethylene glycol, propylene glycol, butylene glycol, triethylene glycol, 1,5-pentanediol, 1,2,6-hexanetriol, and glycerin.
- polyhydric alcohol derivative examples include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, propylene glycol monobutyl ether, dipropylene glycol monobutyl ether, diglycerin. And ethylene oxide adducts.
- nitrogen-containing solvent examples include pyrrolidone, N-methyl-2-pyrrolidone, cyclohexyl pyrrolidone, and triethanolamine.
- alcohols include alcohols such as ethanol, isopropyl alcohol, butyl alcohol, and benzyl alcohol.
- the solvent examples include thiodiethanol, thiodiglycerol, sulfolane, dimethyl sulfoxide and the like.
- propylene carbonate, ethylene carbonate, or the like can be used.
- the water-soluble solvent used in the present invention may be used alone or in combination of two or more.
- the content of the water-soluble solvent is 1% by mass or more and 60% by mass or less, preferably 5% by mass or more and 40% by mass or less of the entire ink.
- a sufficient optical density may not be obtained.
- the amount is more than 60% by mass, the viscosity of the liquid increases. In some cases, the ejection characteristics of the ink liquid become unstable.
- the surface tension of the ink is preferably 20 mN / m or more and 60 mN / m or less. More preferably, it is 20 mN or more and 45 mN / m or less, More preferably, it is 25 mN / m or more and 35 mN / m or less. If the surface tension is less than 20 mN / m, liquid may overflow on the nozzle surface of the recording head, and printing may not be performed normally. On the other hand, if it exceeds 60 mN / m, the permeability to the recording medium after printing may be slow, and the drying time may be slow. The surface tension was measured under the environment of 23 ° C. and 55% RH using a Wilhelmy surface tension meter as described above.
- the viscosity of the ink is preferably from 1.2 mPa ⁇ s to 8.0 mPa ⁇ s, more preferably from 1.5 mPa ⁇ s to less than 6.0 mPa ⁇ s, still more preferably from 1.8 mPa ⁇ s to 4. It is less than 5 mPa ⁇ s.
- the viscosity was measured using a rotational viscometer Rheomat 115 (manufactured by Contraves) at 23 ° C. and a shear rate of 1400 s ⁇ 1 .
- water is added to the ink in a range that achieves the above-described preferable surface tension and viscosity.
- the amount of water added is not particularly limited, but is preferably 10% by mass to 99% by mass, and more preferably 30% by mass to 80% by mass with respect to the entire ink.
- cellulose derivatives such as polyethyleneimine, polyamines, polyvinylpyrrolidone, polyethylene glycol, ethylcellulose, carboxymethylcellulose, polysaccharides and derivatives thereof, other water-soluble polymers, acrylics Polymer emulsion, polyurethane emulsion, polymer emulsion such as hydrophilic latex, hydrophilic polymer gel, cyclodextrin, macrocyclic amines, dendrimers, crown ethers, urea and its derivatives, acetamide, silicone surfactant, fluorine-based A surfactant or the like can be used.
- cellulose derivatives such as polyethyleneimine, polyamines, polyvinylpyrrolidone, polyethylene glycol, ethylcellulose, carboxymethylcellulose, polysaccharides and derivatives thereof, other water-soluble polymers, acrylics Polymer emulsion, polyurethane emulsion, polymer emulsion such as hydrophilic latex, hydrophilic poly
- alkali metals such as potassium hydroxide, sodium hydroxide, lithium hydroxide, ammonium hydroxide, triethanolamine, diethanolamine, ethanolamine, 2-amino-2-methyl
- Nitrogen-containing compounds such as 1-propanol, alkaline earth metal compounds such as calcium hydroxide, acids such as sulfuric acid, hydrochloric acid and nitric acid, strong acid and weak alkali salts such as ammonium sulfate, and the like
- a pH buffer, an antioxidant, a fungicide, a viscosity modifier, a conductive agent, an ultraviolet absorber, and the like can be added as necessary.
- the ink jet recording method of the present invention is a method of forming an image on the surface of the recording medium by using the ink for ink jet recording of the present invention and ejecting ink from the recording head to the surface of the recording medium in accordance with a recording signal.
- the ink jet recording apparatus of the present invention further includes a recording head that uses the ink for ink jet recording of the present invention and ejects ink (if necessary, a treatment liquid) onto the surface of the recording medium, and ejects the ink from the recording head onto the surface of the recording medium. By doing so, the apparatus forms an image.
- the ink jet recording apparatus of the present invention can supply ink to the recording head and can be removed from the ink jet recording apparatus main body (hereinafter referred to as “ink tank”). May be provided).
- the ink tank of the present invention is stored in the ink tank for ink jet recording.
- the ink jet recording apparatus of the present invention a normal ink jet recording apparatus equipped with a printing method capable of using the ink for ink jet recording of the present invention can be used.
- the drying of the ink is controlled as necessary. Equipped with a heater, etc., or an intermediate transfer mechanism, and a mechanism for ejecting (printing) ink and processing liquid onto the intermediate and then transferring it to a recording medium such as paper.
- the ink tank for ink jet recording of the present invention is detachable from an ink jet recording apparatus equipped with a recording head, and has a configuration capable of supplying ink to the recording head while being attached to the ink jet recording apparatus.
- a conventionally known ink tank can be used.
- the ink jet recording method (apparatus) of the present invention preferably adopts a thermal ink jet recording method or a piezo ink jet recording method from the viewpoint of the effect of improving bleeding and intercolor bleeding.
- the thermal ink jet recording method the ink is heated at the time of ejection and has a low viscosity, but the viscosity rapidly increases because the temperature of the ink is lowered on the recording medium. For this reason, there is an effect of improving bleeding and intercolor bleeding.
- the piezo ink jet method it is possible to discharge a high-viscosity liquid, and the high-viscosity liquid can suppress spreading in the paper surface direction on the recording medium. There is an improvement effect on intercolor bleeding.
- replenishment (supply) of ink to the recording head is performed from an ink tank filled with ink liquid (including a treatment liquid tank if necessary).
- the ink tank is preferably of a cartridge type that can be attached to and detached from the apparatus main body, and ink can be easily replenished by exchanging the cartridge type ink tank.
- the recorded matter of the present invention can be obtained by using an ink-jet ink, and can be suitably obtained by employing the above-described ink-jet recording method. According to such a recorded matter, a recorded matter having excellent chromatic characteristics and durability can be obtained.
- the diazo component represented by the general formula (7) can be synthesized by a known method (for example, the method described in Bioorganic & Medicinal Chemistry Letter, 14 (2004), pages 2121 to 2125).
- Y, Z and G have the same meanings as Y, Z and G in the general formula (1), respectively.
- the coupling component represented by the general formula (8) can be synthesized, for example, by the following route.
- R 1, R 2, R 3 are each synonymous with R 1, R 2, R 3 in the general formula (1).
- Example 2 Specific Compound Example (2) -1 Specific compound example (2) -1 was synthesized by the following route.
- Example 3 Specific Compound Example (2) -43 Specific compound example (2) -43 was synthesized by the following route.
- Example 4 Specific Compound Example (1) -33 Specific compound example (1) -33 was synthesized by the following route.
- the precipitated crystals were collected by filtration, rinsed with water, and rinsed with isopropanol. It dried at room temperature for 36 hours, and obtained the said intermediate body (19) by 119g (white powder, yield 84.5%).
- the NMR measurement result of the obtained intermediate (19) is as follows. 1 H NMR (300 MHz in DMSO-d6; ⁇ ppm; J Hz) 7.80 (1H, s), 7.52 (2H, s), 5.98 (1H, s), 4.13 (4H, s)
- the NMR measurement result of the obtained intermediate (20) was as follows: Street. 1 H NMR (300 MHz in DMSO-d6; ⁇ ppm; J Hz) 8.94 (1H, s), 8.35 (4H, s), 8.03 (2H, s), 8.01 (1H, s)
- Comparative Example 1 Comparative compound (17) The comparative compound (17) was synthesized by the following route.
- Comparative Compound (17) 8.4 parts of 43 wt% nitrosylsulfuric acid was dissolved in 17 parts concentrated sulfuric acid and 32 parts acetic acid. This solution was ice-cooled to keep the internal temperature at 0 to 5 ° C., and 3.0 parts of compound (16) was added in portions so that the internal temperature was 5 ° C. or less, and stirred at the same temperature for 1 hour. A diazonium salt solution was obtained. Separately, 2 parts of compound (14) is added to 80 parts of methanol to prepare a suspension, which is cooled with ice to keep the internal temperature at 5 ° C. or lower, and the diazonium salt solution is kept at 5 ° C. or lower in this. Gradually added.
- Example 5 2.5 parts of the pigment (2) -1 synthesized in Example 2, 0.5 part of sodium oleate, 5 parts of glycerin and 42 parts of water were mixed, and planetary ball mill together with 100 parts of zirconia beads having a diameter of 0.1 mm. Was used for dispersion for 6 hours at 300 rpm. After completion of the dispersion, the zirconia beads were separated to obtain a yellow pigment dispersion 1.
- Example 6 A pigment dispersion 2 was obtained in the same manner as in Example 5 except that the azo pigment (2) -43 of the present invention was used in place of the pigment (2) -1 used in Example 5.
- Example 7 A pigment dispersion 3 was obtained in the same manner as in Example 5 except that the azo pigment (1) -33 of the present invention was used instead of the pigment (2) -1 used in Example 5.
- Example 2 The same operation as in Example 5 was performed except that the comparative compound (17) was used in place of the pigment (2) -1 used in Example 5. After 6 hours of dispersion operation, no pigment dispersion was obtained and gelled.
- Example 3 instead of pigment (2) -1 used in Example 5, C.I. I. A yellow comparative pigment dispersion 1 was obtained in the same manner as in Example 5 except that CI Pigment Yellow 155 (INKJET YELLOW 4G VP2532 manufactured by Clariant) was used.
- the pigment dispersions 1, 2, and 3 and the comparative pigment dispersion 1 were evaluated as a dye residual ratio [(concentration after irradiation / concentration before irradiation) ⁇ 100%].
- the residual ratio was evaluated as O for 60% or more, ⁇ for 50% or more and less than 60%, and X for less than 50%. The results are shown in Table 1.
- the obtained pigment dispersion was No. 3 was applied to plain paper 4024 manufactured by Xerox Corporation.
- the obtained coated material was evaluated for light resistance in the same manner as in the photomat paper, the same result as in the photomat paper was obtained.
- the results are shown in Table 1.
- ⁇ Dispersibility> Mix 2.5 parts of pigment, 0.5 part of sodium oleate, 5 parts of glycerin and 42 parts of water, and disperse for 6 hours at 300 rpm using a planetary ball mill with 100 parts of zirconia beads having a diameter of 0.1 mm.
- the pigment dispersions 1, 2, and 3 and the comparative compound (17) and the comparative pigment dispersion 1 were designated as ⁇ when the particle size was sufficiently dispersed without being gelled, and x when the particle size could not be dispersed. evaluated.
- the results are shown in Table 1.
- the pigment dispersion can be used, for example, in printing inks such as inkjet, color toners for electrophotography, LCDs, LCDs, PDPs, color filters used in image sensors such as CCDs, paints, colored plastics, etc. it can.
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Abstract
Description
〔1〕
下記一般式(1)により表されるアゾ顔料、その互変異性体、それらの塩または水和物。
下記一般式(2)で表されるアゾ顔料、その互変異性体、それらの塩または水和物。
上記一般式(2)中のXが窒素原子であることを特徴とする〔2〕に記載のアゾ顔料、その互変異性体、それらの塩または水和物。
上記一般式(2)中のG1が、下記一般式(3)-1から(3)-6で表される置換基群のいずれかから選ばれることを特徴とする〔2〕に記載のアゾ顔料、その互変異性体、それらの塩または水和物。
上記一般式(1)で表されるアゾ顔料が、下記一般式(4)で表されるアゾ顔料であることを特徴とする〔1〕に記載のアゾ顔料、その互変異性体、それらの塩または水和物。
上記一般式(4)中のXが窒素原子であることを特徴とする〔5〕に記載のアゾ顔料、その互変異性体、それらの塩または水和物。
上記一般式(4)中のG2が下記一般式(3)中の(3)-1から(3)-6で表される1~3価の置換基群から選ばれる、いずれかの基であることを特徴とする〔5〕または〔6〕に記載のアゾ顔料、その互変異性体、それらの塩または水和物。
下記一般式(2)で表されるアゾ化合物。
上記一般式(2)中のG1が下記一般式(3)-1から(3)-6で表される置換基群のいずれかから選ばれることを特徴とする〔8〕に記載のアゾ化合物。
下記一般式(4)で表されるアゾ化合物。
上記一般式(4)中のG2が下記一般式(3)中の(3)-1から(3)-6で表される1~3価の置換基群から選ばれる、いずれかの基であることを特徴とする〔10〕に記載のアゾ化合物。
〔1〕~〔7〕のいずれかに記載のアゾ顔料、その互変異性体、それらの塩または水和物又は〔8〕~〔11〕のいずれかに記載のアゾ化合物を少なくとも1種含有することを特徴とする分散物。
〔12〕に記載の分散物を含有することを特徴とする着色組成物。
〔12〕に記載の分散物を含有することを特徴とするインクジェット記録用インク。
〔14〕に記載のインクジェット記録用インクを含有することを特徴とするインクジェット記録用インクタンク。
〔14〕に記載のインクジェット記録用インクを用いることを特徴とするインクジェット記録方法。
〔14〕に記載のインクジェット記録用インクを用いることで得られる記録物。
ここで、本明細書中で用いられるハメットの置換基定数σp値について若干説明する。
ハメット則はベンゼン誘導体の反応または平衡に及ぼす置換基の影響を定量的に論ずるために1935年L.P.Hammettにより提唱された経験則であるが、これは今日広く妥当性が認められている。ハメット則に求められた置換基定数にはσp値とσm値があり、これらの値は多くの一般的な成書に見出すことができるが、例えば、J.A.Dean編、「Lange’s Handbook of Chemistry」第12版、1979年(Mc Graw-Hill)や「化学の領域」増刊、122号、96~103頁、1979年(南光堂)に詳細に記載されている。なお、本発明において各置換基をハメットの置換基定数σpにより限定したり説明したりするが、これは上記の成書で見出せる、文献既知の値がある置換基にのみ限定されるという意味ではなく、その値が文献未知であってもハメット則に基づいて測定した場合にその範囲内に含まれるであろう置換基をも含むことはいうまでもない。本発明の一般式(1)、(2)、(4)、(5)で表される化合物はベンゼン誘導体ではないが、置換基の電子効果を示す尺度として、置換位置に関係なくσp値を使用する。本発明においては今後、σp値をこのような意味で使用する。
顔料は、色素分子間の強力な相互作用による凝集エネルギーによって、分子同士がお互いに強固に結合しあっている状態にある。この状態を作るには、分子間のファンデルワールス力、分子間水素結合が必要であることが、例えば、日本画像学会誌、43巻、10頁(2004年)等に記載されている。
分子間のファンデルワールス力を強めるには、分子への芳香族基、極性基および/又はヘテロ原子の導入等が考えられる。また、分子間水素結合を形成させるには、分子へのヘテロ原子に結合した水素原子を含有する置換基の導入および/又は電子供与性の置環基の導入等が考えられる。更に分子全体の極性が高い方が好ましいと考えられる。そのためには、例えば、アルキル基等鎖状の基は短い方が好ましく、分子量/アゾ基の値は小さい方が好ましいと考えられる。
これらの観点から、顔料分子は、アミド結合、スルホンアミド結合、エーテル結合、スルホン基、オキシカルボニル基、イミド基、カルバモイルアミノ基、ヘテロ環、ベンゼン環等を含有することが好ましい。
本発明におけるアゾ顔料は前記一般式(1)で表される。一般式(1)で表される化合物は、その特異的な構造により色素分子の分子間相互作用を形成しやすく、水または有機溶媒等に対する溶解性が低く、アゾ顔料とすることができる。
顔料は、水や有機溶媒等に分子分散状態で溶解させて使用する染料とは異なり、溶媒中に分子集合体等の固体粒子として微細に分散させて用いるものである。
一般式(1)中、nは、2~4の整数を表し、2または3である場合が好ましく、2である場合が、より好ましい。
nが2以上の場合、分子量が大きくなり、分子間のπ―πスタッキング等の分子間相互作用がより強くなる。分子間の相互作用が密になると、耐溶剤性が向上する。さらに分子間の相互作用が密になり、結晶性が高まると、格子振動等によるエネルギー緩和が起きやすく、耐光性が向上する。一方、nが4を超える場合、分子量が大きくなるが、立体的な障害により分子が平面性を保つことが困難になる。その結果、分子間の相互作用が弱まり、耐光性や耐溶剤性が低下する傾向となる。
R1、R2、R3、Y、Z、Gは置換基を有していてもよい。
本発明は、一般式(1)で表されるアゾ顔料の互変異性体である以下の一般式(1’)で表される化合物もその範囲に含むものである。
R’1、R’2、R’3、Y’、Z’、G1は置換基を有していてもよい。
Z’の基の例は、上記一般式(1)中のZの例と同義であり、好ましい例も同じである。
Xが窒素原子であることにより、色素分子の分子間相互作用だけでなく、分子内相互作用をより強固に形成しやすくなる。それにより安定な分子配列の顔料を構成しやすくなり、良好な色相、高い堅牢性(耐光・ガス・熱・溶剤等)を示す点で好ましい。
R6~R21はそれぞれ互いに結合して環を形成しても良く、その場合、R6~R21は5~7員環の炭化水素環、5~7員環のヘテロ原子環を形成するのに必要な非金属原子団である場合が好ましく、6員環の芳香族炭化水素環、6員環の芳香族ヘテロ原子環を形成するのに必要な非金属原子団である場合が更に好ましい。
本発明は、一般式(2)で表されるアゾ顔料の互変異性体である以下の一般式(2’)で表される化合物もその範囲に含むものである。
Xの例は、それぞれ独立に上記一般式(2)中のXの例と同義であり、好ましい例も同じである。
R6~R21がそれぞれ互いに結合を形成しても良く、その場合、R6~R21は5~7員環の炭化水素環、5~7員環のヘテロ原子環を形成するのに必要な非金属原子団である場合が好ましく、6員環の芳香族炭化水素環、6員環の芳香族ヘテロ原子環を形成するのに必要な非金属原子団である場合が更に好ましい。
本発明は、一般式(4)で表されるアゾ顔料の互変異性体である以下の一般式(4’)で表される化合物もその範囲に含むものである。
Z’は、それぞれ独立に上記一般式(1)中のZの例と同義であり、好ましい例も同じである。
一般式(3)中、R6~R23はそれぞれ独立に、水素原子、水酸基、アミノ基、炭素数1~4の直鎖または分岐鎖のアルキル基、炭素数5~8のシクロアルキル基、炭素数1~5のアシル基、炭素数2~4のアルケニル基、炭素数2~4のアルキニル基、炭素数1~4のアルキルオキシ基、炭素数1~8のアルキルアミノ基、炭素数2~5のアルキルオキシカルボニル基、炭素数1~5のアミド基、炭素数7~10のアラルキル基、5~8員環の飽和または不飽和の炭化水素環、5~8員環の飽和または不飽和のヘテロ環である。R6~R23が5~8員環の飽和または不飽和の炭化水素環あるいはヘテロ環を表す場合、単環または縮合環である。また、R6~R23は置換基を有していてもよい。更に、水素原子、水酸基、アミノ基、炭素数1~4の直鎖または分岐鎖のアルキル基、炭素数1~5のアシル基、炭素数1~4のアルキルオキシ基、炭素数1~8のアルキルアミノ基、炭素数2~5のアルキルオキシカルボニル基、炭素数1~5のアミド基である場合が好ましく、その中でも、水素原子、水酸基、アミノ基、メチル基、メチルオキシ基、メチルアミノ基、アセトアミド基である場合が好ましい。
R6~R21がそれぞれ互いに結合を形成しても良く、その場合、R6~R21は5~7員環の炭化水素環、5~7員環のヘテロ原子環を形成するのに必要な非金属原子団である場合が好ましく、6員環の芳香族炭化水素環、6員環の芳香族ヘテロ原子環を形成するのに必要な非金属原子団である場合が更に好ましい。
本発明は、一般式(5)で表されるアゾ顔料の互変異性体である以下の一般式(5’)で表される化合物もその範囲に含むものである。
この構造が好ましい要因としては、一般式(6)で示すようにアゾ顔料構造に含有するヘテロ環を構成する窒素原子、水素原子およびヘテロ原子(カルボニル基の酸素原子またはアミノ基の窒素原子)が少なくとも1個以上の分子内の交叉水素結合(分子内水素結合)を容易に形成し易いことが挙げられる。その結果、分子の平面性が上がり、更に分子内・分子間相互作用が向上し、一般式(6)で表されるアゾ顔料の結晶性が高くなり(高次構造を形成し易くなり)、顔料としての要求性能である、光堅牢性、熱安定性、湿熱安定性、耐水性、耐ガス性及びまたは耐溶剤性が大幅に向上するため、最も好ましい例となる。
(3)-1から(3)-6で表される1~3価の置換基群から選ばれる、いずれかの基であることが好ましい。
本発明の新規なアゾ化合物は、アゾ顔料として有用である。また、本発明の分散物は一般式(2)又は(4)で表されるアゾ化合物の互変異性体、それらの塩または水和物を少なくとも1種含むことが好ましい。
アゾ顔料における結晶多形の混合比は、単結晶X線結晶構造解析、粉末X線回折(XRD)、結晶の顕微鏡写真(TEM)、IR(KBr法)等の固体の物理化学的測定値から確認できる。
一般式(1)及び一般式(4)のnが2以上の場合の合成方法は、一般式(7)または一般式(8)のR1~R3、Y、Z、G等において、置換可能な2価、3価あるいは4価の置換基を導入した原料を合成し、前記スキームと同様に合成することができる。
このようにして反応させたものは、結晶が析出しているものもあるが、一般的には反応液に水、あるいはアルコール系溶媒を添加し、結晶を析出させ、結晶を濾取することができる。また、反応液にアルコール系溶媒、水等を添加して結晶を析出させて、析出した結晶を濾取することができる。濾取した結晶を必要に応じて洗浄・乾燥して、一般式(1)で表されるアゾ顔料を得ることができる。
溶媒加熱処理に使用される溶媒としては、例えば、水、トルエン、キシレン等の芳香族炭化水素系溶媒、クロロベンゼン、o-ジクロロベンゼン等のハロゲン化炭化水素系溶媒、イソプロパノール、イソブタノール等のアルコール系溶媒、N,N-ジメチルホルムアミド、N,N-ジメチルアセトアミド、N-メチル-2-ピロリドン等の極性非プロトン性有機溶媒、氷酢酸、ピリジン、またはこれらの混合物等が挙げられる。上記で挙げた溶媒に、さらに無機または有機の酸または塩基を加えても良い。溶媒加熱処理の温度は所望する顔料の一次粒子径の大きさによって異なるが、40~150℃が好ましく、60~100℃がさらに好ましい。また、処理時間は、30分~24時間が好ましい。
ソルベントソルトミリングとしては、例えば、粗アゾ顔料と、無機塩と、それを溶解しない有機溶剤とを混練機に仕込み、その中で混練磨砕を行うことが挙げられる。上記無機塩としては、水溶性無機塩が好適に使用でき、例えば塩化ナトリウム、塩化カリウム、硫酸ナトリウム等の無機塩を用いることが好ましい。また、平均粒子径0.5~50μmの無機塩を用いることがより好ましい。当該無機塩の使用量は、粗アゾ顔料に対して3~20質量倍とするのが好ましく、5~15質量倍とするのがより好ましい。有機溶剤としては、水溶性有機溶剤が好適に使用でき、混練時の温度上昇により溶剤が蒸発し易い状態になるため、安全性の点から高沸点溶剤が好ましい。このような有機溶剤としては、例えばジエチレングリコール、グリセリン、エチレングリコール、プロピレングリコール、液体ポリエチレングルコール、液体ポリプロピレングリコール、2-(メトキシメトキシ)エタノール、2-ブトキシエタノール、2ー(イソペンチルオキシ)エタノール、2-(ヘキシルオキシ)エタノール、ジエチレングリコールモノメチルエーテル、ジエチレングルコールモノエチルエーテル、ジエチレングリコールモノブチルエーテル、トリエチレングリコール、トリエチレングリコールモノメチルエーテル、1-メトキシ-2-プロパノール、1-エトキシ-2-プロパノール、ジプロピレングリコール、ジプロピレングリコールモノメチルエーテル、ジプロピレングリコールモノメチルエーテル、ジプロピレングリコールまたはこれらの混合物が挙げられる。当該水溶性有機溶剤の使用量は、粗アゾ顔料に対して0.1~5質量倍が好ましい。混練温度は、20~130℃が好ましく、40~110℃が特に好ましい。混練機としては、例えばニーダーやミックスマーラー等が使用できる。
本発明の顔料分散物は、前記一般式(1)、(2)、(4)、(5)及び(6)で表されるアゾ顔料、互変異性体、その塩または水和物の少なくとも1種を含むことを特徴とする。これにより、色彩的特性、耐久性および分散安定性に優れた顔料分散物とすることができる。
本発明の着色組成物は、少なくとも一種の本発明のアゾ顔料またはアゾ化合物を含有する着色組成物を意味する。本発明の着色組成物は、媒体を含有させることができるが、媒体として溶媒を用いた場合は特にインクジェット記録用インクとして好適である。本発明の着色組成物は、媒体として、親油性媒体や水性媒体を用いて、それらの中に、本発明のアゾ顔料を分散させることによって作製することができる。好ましくは、水性媒体を用いる場合である。本発明の着色組成物には、媒体を除いたインク用組成物も含まれる。本発明の着色組成物は、必要に応じてその他の添加剤を、本発明の効果を害しない範囲内において含有しうる。その他の添加剤としては、例えば、乾燥防止剤(湿潤剤)、褪色防止剤、乳化安定剤、浸透促進剤、紫外線吸収剤、防腐剤、防黴剤、pH調整剤、表面張力調整剤、消泡剤、粘度調整剤、分散剤、分散安定剤、防錆剤、キレート剤等の公知の添加剤(特開2003-306623号公報に記載)が挙げられる。これらの各種添加剤は、水系インクの場合にはインク液に直接添加する。油系インクの場合には、アゾ顔料分散物の調製後分散物に添加するのが一般的であるが、調製時に油相又は水相に添加してもよい。
次に、本発明のインクジェット記録用インクについて説明する。
本発明のインクジェット記録用インク(以下、「インク」という場合がある)は、上記で説明した分散物を用いる。好ましくは、水溶性溶媒、水等を混合して調整される。ただし、特に問題が無い場合は、前記本発明の分散物をそのまま用いても良い。
具体例としては、多価アルコール類では、エチレングリコール、ジエチレングリコール、プロピレングリコール、ブチレングリコール、トリエチレングリコール、1、5-ペンタンジオール、1,2,6-ヘキサントリオール、グリセリン等が挙げられる。
なお、上記表面張力は、前記同様ウイルヘルミー型表面張力計を用いて、23℃、55%RHの環境下で測定した。
なお、上記粘度(後述するものを含む)の測定は、回転粘度計レオマット115(Contraves社製)を用い、23℃でせん断速度を1400s-1として行った。
本発明のインクジェット記録方法は、本発明のインクジェット記録用インクを用い、記録信号に応じて記録ヘッドから記録媒体表面にインクを吐出して、記録媒体表面に画像を形成する方法である。
また、本発明のインクジェット記録装置は、本発明のインクジェット記録用インクを用い、インク(必要により処理液)を記録媒体表面に吐出する記録ヘッドを備え、記録媒体表面に前記インクを記録ヘッドから吐出することにより、画像を形成する装置である。なお、本発明のインクジェット記録装置は、記録ヘッドに、インクを供給することができ、かつ、インクジェット記録装置本体に対して脱着可能なインクジェット記録用インクタンク(以下、「インクタンク」と称す場合がある)を備えていてもよい。この場合、このインクジェット記録用インクタンクには、本発明のインクが収納される。
また、本発明のインクジェット記録用インクタンクは、記録ヘッドを備えたインクジェット記録装置に対して脱着可能であり、インクジェット記録装置に装着した状態で、記録ヘッドにインクを供給できる構成を有するものであれば、従来公知のインクタンクが利用できる。
熱インクジェット記録方式の場合、吐出時にインクが加熱され、低粘度となっているが、記録媒体上でインクの温度が低下するため、粘度が急激に大きくなる。このため、滲み及び色間滲みに改善効果がある。一方、ピエゾインクジェット方式の場合、高粘度の液体を吐出することが可能であり、高粘度の液体は記録媒体上での紙表面方向への広がりを抑制することが可能となるため、滲み、及び、色間滲みに改善効果がある。
本発明において一般式(7)で表されるジアゾ成分は、既知の方法(例えばBioorganic & Medicinal Chemistry Letter,14(2004年)2121頁~2125頁記載の方法)により合成できる。
室温にて50部のチオカルボヒドラジド(9)をエタノール370mlに懸濁させ、加温して内温78℃にて過熱攪拌した。同温度にて、12規定塩酸140mlを30分かけて滴下した。同温度にて10分間攪拌した後、同温度にて2-クロロアセト酢酸エチル(10)78部を30分かけて滴下した。同温度にて1時間攪拌した後、同温度にて熱時ろ過を行い、析出した固体を濾別した。得られた濾液を氷冷し、内温10℃以下で1時間静置した後、析出した固体を濾過し、酢酸エチル100部を用いてかけ洗いを行った。12時間室温にて乾燥を行い、白色固体として化合物(11)を33.4部得た。1H NMR(300MHz in DMSO-d6; δppm; J Hz) 1.28 (3H, t), 2.39 (3H, s), 4.20 (2H, q), 9.7-10 (3H, br)MALDI-TOF-MS: 227.1 [M+H+]
室温にて化合物(11)23.3部を酢酸70部に懸濁させ、加温して内温80℃にて攪拌し、同温度にて無水酢酸10mlを3分間かけて滴下した。同温度にて1時間攪拌した後、氷冷して内温を10℃に冷却した。析出した固体を濾過し、酢酸20部を用いてかけ洗いを行った。減圧下12時間室温にて乾燥を行い、白色固体として化合物(12)を22.4g得た。1H NMR(300MHz in DMSO-d6; δppm; J Hz) 1.27 (3H, t), 1.84 (3H, s), 2.31 (3H,s), 4.20 (2H, q), 9.90 (1H, s)MALDI-TOF-MS: 155.1 [M+H+]
室温にて化合物(12)14.3部をトルエン430部に懸濁させ、加温して内温110℃にて攪拌した。同温度にてオキシ塩化リン11.8mlを15分かけて滴下し、同温度にて1時間攪拌した後、更に同温度にてオキシ塩化リン4mlを10分かけて滴下し、同温度にて更に1時間攪拌した。室温に冷却した後、水800部に内温が20~25℃を保つように少しずつ加えた。水中に全て加えた後、20~25℃を保つように、pHが7になるまで炭酸カリウムを少しずつ加えた。pHを7にして室温にて30分間攪拌した後、分液操作を行った。水層を酢酸エチル300部で2回抽出した後、合わせた油層を水100部で洗浄し、油層を無水硫酸ナトリウムで乾燥した。硫酸ナトリウムを濾別した後、減圧下溶媒を留去し、褐色固体として化合物(13)を10.0部得た。1H NMR(300MHz in DMSO-d6; δppm; J Hz) 1.29 (3H, t), 2.43 (3H, s), 2.48 (3H, s), 4.20 (2H,q)MALDI-TOF-MS: 209.1 [M+H+]
22部の化合物(13)を室温にてジメチルスルホキシド180部に懸濁させ、室温で攪拌した。同温度にて窒素ガスを30分間吹き込み脱気した後、別に水酸化ナトリウム42部を水88部に溶解して用意した溶液を30分間かけて滴下した。滴下した後、加温して、内温100℃にて2時間攪拌した。氷冷して内温を10℃以下にした後、内温5℃の冷水1000部に注ぎ込んだ。pH7になるように12規定塩酸を加え中和した。析出した結晶を濾過し、水200部、酢酸エチル100部を用いてかけ洗いし、褐色固体として化合物(14)を9.1部得た。1H NMR(300MHz in DMSO-d6; δppm; J Hz) 2.23 (3H, s), 2.44 (3H, s), 5.49 (1H, s)MALDI-TOF-MS: 137.0 [M+H+]
具体的化合物例(2)-1
具体的化合物例(2)-1の合成は、以下のルートで合成した。
6.6部の化合物(15)を室温にて79部のリン酸に加えて加温して内温60℃にて溶かした。この溶液を氷冷して内温を-5~0℃に保ち内温が5℃以下になるように亜硝酸ナトリウム3.0部を分割して加えて同温にて1時間攪拌し、ジアゾニウム塩溶液を得た。別に化合物(14)4部をメタノール200部に加えて懸濁液を用意し、氷冷して内温を5℃以下に保ち、この中に上述のジアゾニウム塩溶液を内温が5℃以下となるように徐々に加えた。同温にて1時間攪拌した後、氷浴をはずし室温で1時間攪拌した。析出した結晶を濾別し、メタノール200部かけ洗いし、更に水で充分にかけ洗いした。得られた結晶を乾燥せずにメタノール200部、水100部に加え、内温65℃にて過熱攪拌を3時間行った。その後、空冷下1時間攪拌して室温に冷却し、析出した結晶を濾別し、メタノール200部で洗浄した。12時間室温にて結晶を乾燥し、本発明の顔料(2)-1を7.3部、得た。収率74.5%。顔料(2)-1の赤外吸収スペクトル(KBr法)を図1に示す。
具体的化合物例(2)-43
具体的化合物例(2)-43の合成は、以下のルートで合成した。
13.7部の化合物(17)を室温にて164部のリン酸に加えて加温して内温60℃にて溶かした。この溶液を氷冷して内温を-5~0℃に保ち内温が5℃以下になるように亜硝酸ナトリウム5.6部を分割して加えて同温にて1時間攪拌し、ジアゾニウム塩溶液を得た。別に化合物(14)9.0部をメタノール600部に加えて懸濁液を用意し、氷冷して内温を5℃以下に保ち、この中に上述のジアゾニウム塩溶液を内温が5℃以下となるように徐々にで加えた。同温にて1時間攪拌した後、氷浴をはずし室温で1時間攪拌した。析出した結晶を濾別し、メタノール500部かけ洗いし、更に水で充分にかけ洗いした。得られた結晶を乾燥せずにメタノール200部、水100部に加え、内温65℃にて過熱攪拌を3時間行った。その後、空冷下1時間攪拌して室温に冷却し、析出した結晶を濾別し、メタノール200部で洗浄した。12時間室温にて結晶を乾燥し、本発明の顔料(2)-43を17.9部、得た。収率81.4%。顔料(2)-43の赤外吸収スペクトル(KBr法)を図2に示す。
具体的化合物例(1)-33
具体的化合物例(1)-33の合成は、以下のルートで合成した。
ヒドラジン1水和物387mL(7.98モル)にメタノール298mLを加えて10℃(内温)に冷却し、この混合液に4,6-ジクロロピリミジン149g(1.00モル)を徐々に添加(内温20℃以下)した後、氷浴をはずし、室温まで昇温し、同温度にて30分攪拌した。その後さらに加熱して内温60℃まで昇温し、同温度にて5時間攪拌した。反応終了後、水750mLを加えた後、氷冷して内温が8℃になるまで冷却し、析出した結晶をろ取、水でかけ洗いし、イソプロパノールでかけ洗いした。室温にて36時間乾燥を行い前記中間体(19)を119g(白色粉末、収率84.5%)で得た。得られた中間体(19)のNMR測定結果は以下の通りである。1H NMR(300MHz in DMSO-d6; δppm; J Hz) 7.80(1H, s), 7.52(2H, s), 5.98(1H, s), 4.13(4H, s)
中間体(19)10g(71.3ミリモル)に、エタノール50mLを加えて室温で攪拌した。この懸濁液にエトキシメチレンマロノニトリル21.8g(178ミリモル)を加え、同温度にて12M塩酸水をpH3になるように滴加した後、内温が80℃になるまで加熱し、同温度にて1.5時間攪拌した。反応終了後、室温まで冷却し、析出した結晶を濾別し、水30ml、イソプロパノール30mlでかけ洗いした。得られた結晶を減圧下60℃にて乾燥し、前記中間体(20)を18.8g(灰色粉末、収率90.3%)得られた中間体(20)のNMR測定結果は以下の通りである。1H NMR(300MHz in DMSO-d6; δppm; J Hz) 8.94(1H, s), 8.35(4H, s), 8.03(2H, s), 8.01(1H, s)
中間体(20)2部にリン酸40部、硫酸10部を加え、内温60℃に加温して30分間攪拌した。この懸濁液を冷却して内温3~5℃に保ち、亜硝酸ナトリウムを1.2部加え、同温度にて2時間攪拌し、ジアゾニウム塩溶液を得た。この中に化合物(14)を粉体で、内温が5℃以下となるように徐々に加えた。同温度にて1.5時間攪拌した後、氷浴をはずし室温で30分攪拌した。この中にメタノール60mlを加え、30分攪拌した後、この反応液を水200mlに注ぎ込み、室温にて30分攪拌した。析出した結晶をろ取、水100ml、メタノール50mlでかけ洗いした。得られた結晶を乾燥せずにメタノール20ml、水20mlを加え、内温65℃にて過熱攪拌を3時間行った。その後、空冷下1時間攪拌し室温に冷却した後、析出した結晶を濾別し、メタノール30部で洗浄した。12時間室温にて結晶を乾燥し、本発明の顔料(1)-33を2.8部を得た。収率69.2%。
比較化合物(17)
比較化合物(17)の合成は、以下のルートで合成した。
8.4部の43重量%ニトロシル硫酸を17部の濃硫酸、32部の酢酸に溶かした。この溶液を氷冷して内温を0~5℃に保ち、3.0部の化合物(16)を内温が5℃以下となるように分割して加え、同温にて1時間攪拌し、ジアゾニウム塩溶液を得た。別に化合物(14)2部をメタノール80部に加えて懸濁液を用意し、氷冷して内温を5℃以下に保ち、この中に上述のジアゾニウム塩溶液を5℃以下になるように徐々に加えた。同温にて1時間攪拌した後、氷浴をはずし室温で1時間攪拌した。析出した結晶を濾別し、メタノール80部かけ洗いし、更に水で充分にかけ洗いした。得られた結晶を乾燥せずにメタノール80部、水40部に加え、内温65℃にて過熱攪拌を3時間行った。その後、空冷下1時間攪拌し、室温に冷却し、析出した結晶を濾別し、メタノール30部で洗浄した。12時間室温にて結晶を乾燥し、比較化合物(17)を3.7部を得た。収率75.5%。比較化合物(17)の赤外吸収スペクトル(KBr法)を図3に示す。
実施例2で合成した顔料(2)-1を2.5部、オレイン酸ナトリウム0.5部、グリセリン5部、水42部を混合し、直径0.1mmのジルコニアビーズ100部とともに遊星型ボールミルを用いて毎分300回転、6時間分散を行った。分散終了後、ジルコニアビーズを分離し、黄色の顔料分散物1を得た。
実施例5で用いた顔料(2)-1に変えて本発明のアゾ顔料(2)-43を用いた以外は実施例5と同様にして顔料分散物2を得た。
実施例5で用いた顔料(2)-1に変えて本発明のアゾ顔料(1)-33を用いた以外は実施例5と同様にして顔料分散物3を得た。
実施例5で用いた顔料(2)-1に変えて比較化合物(17)を用いた以外は実施例5と同様に操作を行った。6時間の分散操作後、顔料分散物は得られず、ゲル化していた。
実施例5で用いた顔料(2)-1に変えてC.I.ピグメント・イエロー155(クラリアント社製INKJET YELLOW 4G VP2532)を用いた以外は実施例5と同様にして黄色の比較顔料分散物1を得た。
色相については、上記で得られた塗布物の色度を目視にて赤味が少なく鮮やかさが大きいものを○(良)、どちらか一方が当てはまらないものを△、及びどちらも当てはまらないものを×(不良)として評価を行った。結果を表1に示す。
色相評価に用いた画像濃度1.0の塗布物をフェードメーターを用いてキセノン光(170000Lux.;325nm以下カットフィルター存在下)を14日間照射し、キセノン照射前後の画像濃度を反射濃度計を用いて測定し、色素残存率[(照射後濃度/照射前濃度)×100%]として顔料分散物1,2,3及び比較顔料分散物1を評価した。残存率が60%以上を○、50%以上60%未満を△、50%未満を×として評価した。結果を表1に示す。
顔料2.5部、オレイン酸ナトリウム0.5部、グリセリン5部、水42部を混合し、直径0.1mmのジルコニアビーズ100部とともに遊星型ボールミルを用いて毎分300回転、6時間分散を行った結果、ゲル化せずに十分に粒径が小さく分散できたものを○、できなかったものを×として顔料分散物1,2,3及び比較化合物(17)、比較顔料分散物1を評価した。結果を表1に示す。
本出願は、2008年3月7日出願の日本出願(特願2008-058713)及び2009年2月6日出願の日本出願(特願2009-026195)に基づくものであり、その内容はここに参照として取り込まれる。
Claims (17)
- 下記一般式(2)で表されるアゾ顔料、その互変異性体、それらの塩または水和物。
- 上記一般式(2)中のXが窒素原子であることを特徴とする請求項2記載のアゾ顔料、その互変異性体、それらの塩または水和物。
- 上記一般式(1)で表されるアゾ顔料が、下記一般式(4)で表されるアゾ顔料であることを特徴とする請求項1に記載のアゾ顔料、その互変異性体、それらの塩または水和物。
- 上記一般式(4)中のXが窒素原子であることを特徴とする請求項5に記載のアゾ顔料、その互変異性体、それらの塩または水和物。
- 下記一般式(2)で表されるアゾ化合物。
- 下記一般式(4)で表されるアゾ化合物。
- 請求項1~7のいずれかに記載のアゾ顔料、その互変異性体、それらの塩または水和物、又は請求項8~11のいずれかに記載のアゾ化合物を少なくとも1種含有することを特徴とする分散物。
- 請求項12に記載の分散物を含有することを特徴とする着色組成物。
- 請求項12に記載の分散物を含有することを特徴とするインクジェット記録用インク。
- 請求項14に記載のインクジェット記録用インクを含有することを特徴とするインクジェット記録用インクタンク。
- 請求項14に記載のインクジェット記録用インクを用いることを特徴とするインクジェット記録方法。
- 請求項14に記載のインクジェット記録用インクを用いることで得られる記録物。
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- 2009-03-05 EP EP12167287.7A patent/EP2492317B1/en not_active Not-in-force
- 2009-03-05 AU AU2009220564A patent/AU2009220564B2/en not_active Ceased
- 2009-03-05 CN CN200980108048.1A patent/CN101959966B/zh not_active Expired - Fee Related
- 2009-03-05 EP EP09717322.3A patent/EP2253673B1/en not_active Not-in-force
- 2009-03-05 WO PCT/JP2009/054179 patent/WO2009110556A1/ja active Application Filing
- 2009-03-05 KR KR20107019755A patent/KR20100124744A/ko not_active Application Discontinuation
- 2009-03-05 CA CA2717835A patent/CA2717835A1/en not_active Abandoned
- 2009-03-05 US US12/921,309 patent/US8083810B2/en not_active Expired - Fee Related
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Cited By (1)
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JP2009242488A (ja) * | 2008-03-28 | 2009-10-22 | Fujifilm Corp | アゾ顔料および該アゾ顔料の製造方法、該顔料を含む顔料分散物、着色組成物及びインクジェット記録用インク |
Also Published As
Publication number | Publication date |
---|---|
KR20100124744A (ko) | 2010-11-29 |
CN101959966A (zh) | 2011-01-26 |
EP2253673A1 (en) | 2010-11-24 |
EP2253673A4 (en) | 2011-11-02 |
JP5380098B2 (ja) | 2014-01-08 |
EP2492317A2 (en) | 2012-08-29 |
CA2717835A1 (en) | 2009-09-11 |
EP2492317B1 (en) | 2017-04-19 |
CN101959966B (zh) | 2014-06-18 |
EP2492317A3 (en) | 2012-10-17 |
AU2009220564B2 (en) | 2012-08-23 |
US20110001777A1 (en) | 2011-01-06 |
AU2009220564A1 (en) | 2009-09-11 |
JP2009235384A (ja) | 2009-10-15 |
US8083810B2 (en) | 2011-12-27 |
EP2253673B1 (en) | 2015-11-11 |
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