WO2011148709A1 - インクジェット印刷インク用バインダーの製造方法、インクジェット印刷用インク及び印刷物 - Google Patents
インクジェット印刷インク用バインダーの製造方法、インクジェット印刷用インク及び印刷物 Download PDFInfo
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- WO2011148709A1 WO2011148709A1 PCT/JP2011/057585 JP2011057585W WO2011148709A1 WO 2011148709 A1 WO2011148709 A1 WO 2011148709A1 JP 2011057585 W JP2011057585 W JP 2011057585W WO 2011148709 A1 WO2011148709 A1 WO 2011148709A1
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- JOUDBUYBGJYFFP-FOCLMDBBSA-N thioindigo Chemical compound S\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2S1 JOUDBUYBGJYFFP-FOCLMDBBSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/201—Filters in the form of arrays
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
- C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
- C08G18/0823—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing carboxylate salt groups or groups forming them
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/22—Catalysts containing metal compounds
- C08G18/24—Catalysts containing metal compounds of tin
- C08G18/244—Catalysts containing metal compounds of tin tin salts of carboxylic acids
- C08G18/246—Catalysts containing metal compounds of tin tin salts of carboxylic acids containing also tin-carbon bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/2815—Monohydroxy compounds
- C08G18/282—Alkanols, cycloalkanols or arylalkanols including terpenealcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
- C08G18/348—Hydroxycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/6692—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/34
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
-
- 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
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
Definitions
- the present invention relates to a method for producing a binder used, for example, in ink for inkjet printing.
- ink ejection stability that does not cause ink ejection failure or ejection direction abnormality over a long period of time without causing clogging of the ink ejection nozzles constituting the ink jet printer over time, pigments or dyes
- blending stability of the ink obtained by mixing and producing other additives without causing separation or aggregation over time can be mentioned.
- Examples of the ink for ink jet printing excellent in ink discharge property and blending stability include, for example, a pigment, water, and polymer particles of a water-insoluble vinyl polymer that includes the pigment and can disperse the pigment in the ink composition.
- an urethane composition containing at least a urethane resin are known, and it is known that a mixture of the ink composition and an acetylene glycol as a surfactant can be used (for example, Patent Document 1). reference.).
- Patent Document 1 Patent Document 1
- the very high level of ejection properties and blending stability required by the industry is not one step further. May cause clogging.
- the problem to be solved by the present invention is to provide a binder for ink jet printing ink that can be used for the production of ink jet printing ink that has both excellent ink ejection properties and blending stability, and a method for producing the same.
- the present inventors consider that it is important to improve the compatibility of the components of the ink in order to improve the ejection stability and blending stability of the ink.
- an ink using an excessive amount of a surfactant deteriorates both ejection stability and blending stability, and sometimes causes aggregation of ink components and clogging of the ink ejection nozzle over time.
- the inventors of the present invention together with the type of surfactant, use the surfactant is effective in improving the compatibility of the components of the ink.
- the possibility of improving the ejection stability and blending stability of the ink for ink jet printing obtained in this study was studied.
- an acetylene compound is used as the surfactant, and the acetylene compound is made aqueous by removing part or all of the organic solvent from the organic solvent solution of the hydrophilic group-containing urethane resin that can serve as a binder for the ink. It has been found that a binder for an inkjet printing ink capable of producing an inkjet printing ink excellent in ejection stability and blending stability can be obtained by mixing in advance.
- this invention is a manufacturing method of the binder for inkjet printing inks containing a hydrophilic group containing urethane resin (A), an acetylene compound (B), and an aqueous medium (C), Comprising: The polyol (a1) containing the hydrophilic group-containing polyol (a1-1) and the polyisocyanate (a2) are reacted in the organic solvent (D) or in the absence of a solvent, and the organic solvent (D) is supplied as necessary.
- the present invention relates to a method for producing a binder for ink jet printing ink, comprising a step (3) of removing a part or all of the organic solvent (D) contained in the mixture [II].
- the present invention also relates to an inkjet printing ink containing the inkjet printing ink binder and a pigment or a dye, and a printed material printed using the inkjet printing ink.
- an ink-jet printing ink binder that can be used for the production of ink-jet printing ink having excellent ink ejection properties and blending stability can be obtained.
- the ink-jet printing ink binder obtained by the production method of the present invention is excellent in ink drying properties, for example, even when a printer with a large ink discharge amount such as an industrial wide format printer is used. Therefore, it is possible to form a printed image with high sharpness and excellent scratch resistance without reducing the production efficiency.
- This invention is a manufacturing method of the binder for inkjet printing inks containing a hydrophilic group containing urethane resin (A), an acetylene compound (B), an aqueous medium (C), and another additive as needed. .
- the production method of the present invention is specifically a method through the following steps (1) to (3).
- each step will be described in detail.
- the polyol (a1) containing the hydrophilic group-containing polyol (a1-1) and the polyisocyanate (a2) are reacted in the organic solvent (D) or in the absence of a solvent
- an organic solvent (D) solution [I] of the hydrophilic group-containing urethane resin (A) is produced by supplying the solvent (D).
- the organic solvent (D) solution [I] of the hydrophilic group-containing urethane resin (A) for example, the polyol (a1) and the polyisocyanate (a2) are preliminarily treated at 30 to 150 ° C.
- the organic solvent (D) adjusted to 1 may be fed all at once or sequentially and reacted at 70 to 150 ° C. for about 3 to 30 hours.
- the reaction is preferably performed in the presence of 5% by mass to 300% by mass of an organic solvent (D) based on the total amount of the polyol (a1) and the polyisocyanate (a2).
- the organic solvent (D) may be further supplied as necessary.
- the organic solvent (D) solution [I] of the hydrophilic group-containing urethane resin (A) is prepared by, for example, mixing the polyol (a1) and the polyisocyanate (a2) in the absence of a solvent, from 60 ° C. to 200 ° C.
- the reaction can be carried out at 0.5 ° C. for about 10 to 10 hours, and the organic solvent (D) is supplied and mixed during or after the reaction.
- the polyol (a1) used in the production of the organic solvent (D) solution [I] of the hydrophilic group-containing urethane resin (A) it is essential to use the hydrophilic group-containing polyol (a1-1). If necessary, other polyols (a1-2) having no hydrophilic group can be used in combination. In the case where the hydrophilic group-containing polyol (a1-1) and the other polyol (a1-2) are used in combination as the polyol (a1), they may be mixed in advance and are separately mixed in a reaction vessel. You may supply.
- hydrophilic group-containing polyol (a1-1) and the other polyol (a1-2) are used in combination, for example, the hydrophilic group-containing polyol (a1-1) and the polyisocyanate (a2) are organically mixed.
- An organic solvent (D) solution of the hydrophilic group-containing urethane prepolymer (A-1) is produced by reacting in the solvent (D), and then the organic solvent (D) of the urethane prepolymer (A-1) It is possible to produce an organic solvent (D) solution [I] of a hydrophilic group-containing urethane resin (A) by mixing and reacting the solution with the other polyol (a1-2).
- the hydrophilic group-containing urethane prepolymer (A-1) is produced by reacting the hydrophilic group-containing polyol (a1-1) and the polyisocyanate (a2) in the absence of a solvent, and then the urethane Organic solvent (D) solution of hydrophilic group-containing urethane resin (A) by mixing and reacting prepolymer (A-1) with a mixture containing other polyol (a1-2) and organic solvent (D) [I] can also be produced.
- the hydrophilic group-containing polyol (a1-1) may be divided into two or more times and mixed with the polyisocyanate (a2) for reaction.
- a hydrophilic group-containing urethane prepolymer (A-1) is prepared by reacting a part of the hydrophilic group-containing polyol (a1-1) with the polyisocyanate (a2) in an organic solvent (D).
- Organic solvent (D) solution Organic solvent (D) solution, and then the urethane prepolymer (A-1) organic solvent (D) solution, the remaining hydrophilic group-containing polyol (a1-1) and, if necessary, the other It is possible to produce an organic solvent (D) solution [I] of a hydrophilic group-containing urethane resin (A) by supplying or reacting the polyol (a1-2) with a batch or separately. It is preferable when manufacturing ink for inkjet printing excellent in stability.
- 40% by mass to 80% by mass of the total amount of the hydrophilic group-containing polyol (a1-1) used for the production of the hydrophilic group-containing urethane resin (A) is organic of the urethane prepolymer (A-1). It is used when producing the solvent (D) solution, and the remaining 20% to 60% by mass is used for the reaction with the urethane prepolymer (A-1). It is preferable when manufacturing ink for inkjet printing.
- the reaction between the polyol (a1) and the polyisocyanate (a2) is, for example, an equivalent ratio of the isocyanate group of the polyisocyanate (a2) to the hydroxyl group of the polyol (a1) [the isocyanate group / the hydroxyl group]. , Preferably in the range of 0.8 to 2.5, more preferably in the range of 0.9 to 1.5. Further, when a chain extender described later is used, the equivalent ratio is preferably in the range of 1.1 to 1.5.
- hydrophilic group-containing polyol (a1-1) examples include an anionic group-containing polyol, a cationic group-containing polyol, and a nonionic group-containing polyol.
- An anionic group-containing polyol and a cationic group-containing polyol can be used. Is preferably used, and an anionic group-containing polyol is preferably used in terms of imparting good ejection stability and blending stability of the ink.
- anionic group-containing polyol a polyol having a carboxyl group, a sulfonic acid group, a carboxylate group, a sulfonate group, or the like can be used.
- 2,2′-dimethylolpropionic acid, 2,2′-diionic acid can be used.
- Carboxyl group-containing polyols such as methylolbutanoic acid, 2,2'-dimethylolbutyric acid, 2,2'-dimethylolvaleric acid, 5-sulfoisophthalic acid, sulfoterephthalic acid, 4-sulfophthalic acid, 5 [4-sulfophenoxy]
- a sulfonic acid group-containing polyol such as isophthalic acid can be used.
- the anionic group-containing polyol is obtained by reacting the above-mentioned low molecular weight hydrophilic group-containing polyols such as carboxyl group-containing polyols and sulfonic acid group-containing polyols with various polycarboxylic acids such as adipic acid. Hydrophilic group-containing polyester polyols and the like that can be used can also be used.
- anionic group-containing polyol a part or all of the anionic group may be previously neutralized with a basic compound to form, for example, a carboxylate group or a sulfonate group.
- organic amines such as ammonia, triethylamine, pyridine, morpholine, alkanolamines such as monoethanolamine, metal basic compounds including Na, K, Li, Ca, etc. can be used. .
- a cationic group-containing polyol for example, a polyol having a tertiary amino group, a functional group neutralized with an acidic compound, a functional group quaternized with a quaternizing agent, or the like can be used.
- the acidic compound for example, acetic acid, propionic acid, lactic acid, maleic acid, sulfonic acid, methanesulfonic acid, hydrochloric acid, sulfuric acid, orthophosphoric acid, orthophosphorous acid and the like can be used.
- dimethyl sulfate, diethyl sulfate, methyl chloride, ethyl chloride, benzyl chloride, methyl methanesulfonate, methyl paratoluenesulfonate, and the like can be used.
- nonionic group-containing polyol examples include polyoxyethylene groups such as polyoxyethylene groups, polyoxypropylene groups, polyoxybutylene groups, poly (oxyethylene-oxypropylene) groups, and polyoxyethylene-polyoxypropylene groups.
- a polyol having an alkylene group can be used.
- polyol having the polyalkylene oxide chain for example, those sold by Perstorp under the trade name “YmerYN120” can be used.
- the hydrophilic group-containing polyol (a1-1) may be used in an amount of 5% by mass to 20% by mass with respect to the total amount of the polyol (a1) and the polyisocyanate (a2). It is preferable for achieving both good storage stability and blending stability. Further, when the anionic group-containing polyol is used as the hydrophilic group-containing polyol (a1-1), it is preferably used in the range of 5% by mass to 20% by mass.
- a polyol having no hydrophilic group can be used as the other polyol (a1-2).
- a polyol having no hydrophilic group can be used.
- an aliphatic cyclic structure-containing polyol can be used.
- Examples of the aliphatic cyclic structure-containing polyol include cyclobutanediol, cyclopentanediol, 1,4-cyclohexanediol, cycloheptanediol, cyclooctanediol, cyclohexanedimethanol, hydroxypropylcyclohexanol, dicyclohexanediol, and butylcyclohexanediol.
- An aliphatic cyclic structure-containing polycarbonate polyol, an aliphatic cyclic structure-containing polyester polyol, and an aliphatic cyclic structure-containing polyether polyol can be used alone or in combination of two or more. .
- the aliphatic cyclic structure-containing polyol is 0.5% by mass to 25% by mass with respect to the total amount of the polyol (a1) and the polyisocyanate (a2) used in the production of the hydrophilic group-containing urethane resin (A).
- polyether polyol, polycarbonate polyol, and polyester polyol can be used as the other polyol (a1-2).
- the polyether polyol, polycarbonate polyol, and polyester polyol have a hydrophilic group or an aliphatic cyclic structure from the viewpoint of being distinguished from the hydrophilic group-containing polyol (a2-1) or the aliphatic cyclic structure-containing polyol. It is not to be.
- hydrophilic group-containing polyether polyol, polycarbonate polyol and polyester polyol are included in the hydrophilic group-containing polyol (a2), and the polyether polyol, polycarbonate polyol and polyester polyol having an aliphatic cyclic structure are the aliphatic group. Included in cyclic structure-containing polyols.
- the polyether polyol or polycarbonate polyol is preferably used in combination with the hydrophilic group-containing polyol (a1-1), and more preferably, the polyether polyol and an anionic group-containing polyol are used in combination.
- polyether polyol for example, one obtained by addition polymerization of alkylene oxide using one or more compounds having two or more active hydrogen atoms as an initiator can be used.
- the initiator examples include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, trimethylene glycol, 1,3-butanediol, 1,4-butanediol, 1,6-hexanediol, glycerin, trimethylolethane, Trimethylolpropane and the like can be used.
- alkylene oxide for example, ethylene oxide, propylene oxide, butylene oxide, styrene oxide, epichlorohydrin, tetrahydrofuran, or the like can be used.
- polytetramethylene glycol or polypropylene glycol is used from the viewpoint of obtaining a binder and an ink for ink jet printing ink that can form a printed image having excellent ink ejection stability and blending stability and excellent scratch resistance. Etc. are particularly preferred.
- polyether polyol those having a number average molecular weight of 500 to 7000 can be used.
- polytetramethylene glycol or polypropylene glycol those having a number average molecular weight of 500 to 5000 are preferably used, and those having a number average molecular weight of 500 to 3500 are preferably used. Further, it is more preferable for forming a printed image having both excellent ejection stability and blending stability and excellent scratch resistance.
- polycarbonate polyol that can be used as the other polyol
- those obtained by reacting a carbonate with polyol and those obtained by reacting phosgene with bisphenol A or the like can be used.
- carbonate ester methyl carbonate, dimethyl carbonate, ethyl carbonate, diethyl carbonate, cyclocarbonate, diphenyl carbonate, or the like can be used.
- polyol capable of reacting with the carbonate ester examples include ethylene glycol, diethylene glycol, 1,2-propylene glycol, dipropylene glycol, 1,4-butanediol, 1,5-pentanediol, 3-methyl-1,5- Relatively low molecular weight dihydroxy compounds such as pentanediol and 1,4-cyclohexanediol, polyester polyols such as polyethylene glycol, polypropylene glycol, and polyhexamethylene adipate can be used.
- polyester polyol examples include those obtained by esterifying low molecular weight polyols and polycarboxylic acids, polyesters obtained by ring-opening polymerization reaction of cyclic ester compounds such as ⁇ -caprolactone, and the like. Copolyester of the above can be used.
- the low molecular weight polyol for example, ethylene glycol, propylene glycol and the like can be used.
- polycarboxylic acid for example, succinic acid, adipic acid, sebacic acid, dodecanedicarboxylic acid, terephthalic acid, isophthalic acid, phthalic acid, and anhydrides or ester-forming derivatives thereof can be used.
- the polyether polyol, polycarbonate polyol, and polyester polyol are 25% by mass to 95% by mass with respect to the total amount of polyol (a1) and polyisocyanate (a2) used in the production of the hydrophilic group-containing urethane resin (A). It is preferable to use in the range of%. In particular, when a polyether polyol, preferably polytetramethylene glycol or polypropylene glycol, is used, the total of the polyol (a1) and polyisocyanate (a2) used in the production of the hydrophilic group-containing urethane resin (A).
- polyisocyanate (a1) used in the step (1) examples include aromatic diisocyanates such as phenylene diisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate, and naphthalene diisocyanate, hexamethylene diisocyanate, lysine diisocyanate, cyclohexane diisocyanate, and isophorone diisocyanate.
- aromatic diisocyanates such as phenylene diisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate, and naphthalene diisocyanate, hexamethylene diisocyanate, lysine diisocyanate, cyclohexane diisocyanate, and isophorone diisocyanate.
- Dicyclohexylmethane diisocyanate, xylylene diisocyanate, tetramethylxylylene diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate and other aliphatic or aliphatic cyclic structure-containing diisocyanates, etc. are used alone or in combination of two or more. Can be used. Among them, it is preferable to use an aliphatic cyclic structure-containing diisocyanate in order to obtain an ink excellent in ejection stability and blending stability.
- an organic solvent (D) used at the manufacturing process (1) of the said hydrophilic group containing urethane resin (A) for example from ketones, such as acetone and methyl ethyl ketone, an aqueous medium represented by ethyl acetate and tetrahydrafuran Solvents having a low boiling point can be used alone or in combination of two or more.
- ketones such as acetone and methyl ethyl ketone is preferable because aggregation in the production process of the inkjet printing ink binder can be prevented and the production can be performed stably.
- organic solvent (D) examples include solvents having a lower boiling point than the aqueous medium, monoalcohols such as methanol, ethanol and isopropanol, polyol compounds such as ethylene glycol, diethylene glycol and glycerin, dimethylformamide, N- A more hydrophilic organic solvent such as amides such as methyl-2-pyrrolidone can be used in combination as long as the effects of the present invention are not impaired.
- the highly hydrophilic organic solvent is preferably used before and after the step (3).
- the hydrophilic group-containing urethane resin (A) it is preferable to use a resin having a urea bond from the viewpoint of obtaining an ink for inkjet printing capable of forming a printed image having excellent scratch resistance.
- the scratch resistance refers to a characteristic that can prevent deterioration of a printed image due to missing of a pigment or the like that may occur when an external force such as friction is applied to the surface of the printed image.
- the hydrophilic group-containing urethane resin having a urea bond is obtained by, for example, reacting the polyol (a1) and the polyisocyanate (a2) in an organic solvent (D) or in the absence of a solvent, and, if necessary, an organic solvent (D).
- an organic solvent (D) solution of a hydrophilic group-containing urethane prepolymer (A-1) having an isocyanate group at the molecular end and then the organic solvent (D) solution and the amino group-containing compound It can be produced by mixing and reacting the isocyanate group of the urethane prepolymer (A-1) with an amino group-containing compound.
- amino group-containing compound examples include ethylamine, n-propylamine, isopropylamine, n-butylamine, diethylamine, di-n-propylamine, diisopropylamine, di-n-butylamine, cyclohexylamine, aniline, monoethanolamine, Monoamines having one or more active hydrogens such as monoisopropanolamine, diethanolamine, disopropanolamine and the like can be used.
- the hydrophilic group-containing urethane resin (A) those having a weight average molecular weight of 3,000 to 200,000 are preferably used, those having a weight average molecular weight of 10,000 to 80,000 are more preferably used, and 20,000 to It is preferable to use a material having a weight average molecular weight of 65000 because both the excellent ejection stability and the very excellent blending stability of the ink for inkjet printing can be achieved.
- the hydrophilic group-containing urethane resin (A) is a high molecular weight material having a weight average molecular weight of more than 50,000 and not more than 200,000. It can also be used.
- a chain extender can be used as necessary.
- the polyol (a1) and the polyisocyanate (a1) are supplied all at once or sequentially into an organic solvent (D) adjusted to 10 ° C. to 60 ° C.
- An organic solvent (D) solution of the hydrophilic group-containing urethane prepolymer (A-1) is produced by reacting for about 5.0 hours, and then the organic solvent (D) solution and the chain extender are mixed and reacted. The method of letting it be mentioned.
- Examples of the chain extender that can be used in producing the urethane resin (A) include ethylenediamine, 1,2-propanediamine, 1,6-hexamethylenediamine, piperazine, 2,5-dimethylpiperazine, and isophorone.
- Diamines such as diamine, 4,4'-dicyclohexylmethanediamine, 3,3'-dimethyl-4,4'-dicyclohexylmethanediamine, 1,4-cyclohexanediamine; N-hydroxymethylaminoethylamine, N-hydroxyethylamino Diamines containing one primary amino group and one secondary amino group, such as ethylamine, N-hydroxypropylaminopropylamine, N-ethylaminoethylamine, N-methylaminopropylamine; diethylenetriamine, dipropylenetriamine , Trier Polyamines such as lentetramine; hydrazines such as hydrazine, N, N′-dimethylhydrazine, 1,6-hexamethylenebishydrazine; succinic acid dihydrazide, adipic acid dihydrazide, glutaric acid dihydrazide, sebacic acid dihydrazide, isophthalic acid
- Dihydrazides dihydrazides; polyamines such as ⁇ -semicarbazide propionic acid hydrazide, 3-semicarbazide-propyl-carbazate, semicarbazide such as semicarbazide-3-semicarbazidemethyl-3,5,5-trimethylcyclohexane, ethylene glycol , Diethylene recall, triethylene glycol, propylene glycol, 1,3-propanediol, 1,3-butanediol, 1,4-butanediol, hexamethylene glycol, Glycols such as saccharose, methylene glycol, glycerin, sorbitol; phenols such as bisphenol A, 4,4′-dihydroxydiphenyl, 4,4′-dihydroxydiphenyl ether, 4,4′-dihydroxydiphenylsulfone, hydrogenated bisphenol A, hydroquinone And water can be used.
- polyamines such as ⁇ -
- the equivalent ratio [amino group / isocyanate group] of the amino group of the polyamine and the isocyanate group of the urethane prepolymer is 1.9 or less (equivalent ratio). Is preferably used within a range of 0.3 to 1.0 (equivalent ratio).
- the hydrophilic group-containing urethane resin (A) solution [I] of the hydrophilic group-containing urethane resin (A) obtained in the step (1) is based on the hydrophilic group-containing urethane resin (A) with respect to the total amount of the solution [I]. ) Is preferably contained in an amount of 15 mass% to 85 mass%.
- the said process (2) which comprises the manufacturing method of the binder for inkjet printing inks of this invention is demonstrated.
- the mixture [II] is produced by mixing with other additives as necessary.
- the organic solvent (D) solution [I], the acetylene compound (B), and the aqueous medium (C) are mixed in advance, and the mixture [II It is important to pass through the process (2) which manufactures.
- ink jet printing with ink ejection stability over a long period of time and ink composition stability for ink jet printing without causing clogging of the ink ejection nozzles constituting the ink jet printer over time or abnormality in the ejection direction Ink jet printing ink binders that can be used in the manufacture of inks can be obtained.
- the acetylene compound (B) is not used in the step (2), and the entire amount thereof is mixed when an ink is produced by mixing a binder for ink-jet printing ink and a pigment, as in the prior art, Ink-jet printing ink obtained by using the ink-jet printing ink obtained by using the ink-jet printing ink binder obtained by the production method of the present invention may cause separation due to long-term storage. In some cases, long-term printing may cause clogging of the ink discharge nozzles or abnormal ink discharge directions.
- the present invention it is essential to use the acetylene compound (B) in the step (2).
- the present invention does not exclude the use of an acetylene compound in the production of an ink by mixing and blending an inkjet printing ink binder and a pigment, as in the prior art.
- the conditions are 20 ° C. to 80 ° C. Or a method of supplying and mixing them all at once or sequentially.
- the hydrophilic group-containing urethane resin (A) and the organic solvent (D) are mixed by mixing and stirring the solution [I] and the aqueous medium (C) under the conditions of 20 ° C. to 80 ° C. ) And an aqueous medium (C) are prepared, and then the mixture [II ′] and the acetylene compound (B) are mixed to produce the mixture [II].
- This is preferable because the compatibility of the hydrophilic group-containing urethane resin (A), the acetylene compound (B), the aqueous medium (C) and the like can be increased, and the stability and production efficiency of the binder for inkjet printing ink can be improved.
- the supply of the acetylene compound (B) to the mixture [II ′] may be performed all at once or sequentially.
- the hydrophilic groups of the hydrophilic group-containing urethane resin (A) in the solution [I] are basic.
- neutralization with a compound or the like is preferable.
- the neutralization of the hydrophilic group is not always essential, and a part or all of the hydrophilic group-containing polyol (a2-1) used for the production of the hydrophilic group-containing urethane resin (A) is previously prepared.
- the acetylene compound (B) used in the step (2) and, if necessary, the step (3), is 0.001 part by mass to 0.5 part by mass with respect to 100 parts by mass of the hydrophilic group-containing urethane resin (A). It is preferably used in the range of parts by mass, and more preferably in the range of 0.005 parts by mass to 0.1 parts by mass in order to maintain the excellent ejection stability and storage stability of the ink.
- the whole amount of the acetylene compound (B) may be used in the step (2), but it is not essential. Specifically, 60 mass% to 100 mass%, more preferably 60 mass% to 90 mass% of the acetylene compound (B) is preferably added to the organic solvent (D) solution [I] and the aqueous medium (C ) And the like, and preferably the remaining 40% by mass to 0% by mass, more preferably 40 to 10% by mass of the acetylene compound is used in the step (3) to be described later. Suppressing and improving the production efficiency of the binder for inkjet printing ink is preferable.
- acetylene compound (B) acetylene monoalcohol, acetylene glycol, etc. can be used individually or in combination, for example.
- the acetylene monoalcohol is a compound having an acetylene group and one hydroxyl group, and for example, a compound having a structure represented by the following general formula (3) can be used.
- the acetylene glycol is a compound having an acetylene group and two hydroxyl groups, and for example, compounds represented by the following general formulas (1) and (2) can be used.
- it is preferable to use acetylene glycol because excellent blending stability of the ink and excellent ejection stability of the ink can be maintained for a long time.
- R 1 and R 4 in general formula (1) are each independently a hydrogen atom or an alkyl group.
- R 2 and R 3 are each independently a methyl group or an ethyl group.
- R 1 and R 4 in general formula (2) are each independently a hydrogen atom or an alkyl group.
- R 2 and R 3 are each independently a methyl group or an ethyl group.
- M and n are 1 is an integer from 1 to 60.
- R 1 and R 2 in general formula (3) are each independently a hydrogen atom or an alkyl group.
- acetylene compound (B) examples include 2,4,7,9-tetramethyl-5-decyne-4,7-diol and 2,4,7,9-tetramethyl-5-decyne- 4,7-diol, 2,5,8,11-tetramethyl-6-dodecin-5,8-diol, 2,4,4,7,9-pentamethyl-5-decyn-7-ol, and their Alkylene oxide adducts can be used.
- alkylene oxide examples include ethylene oxide and copolymers of ethylene oxide and propylene oxide, and ethylene oxide is preferable.
- acetylene compound (B) Surfynol 104 series marketed as what contains the acetylene glycol represented by the said General formula (1), and the acetylene glycol represented by the said General formula (2) are included.
- Surfynol 400 series marketed as products and Surfynol 500 series marketed as products containing acetylene monoalcohol represented by the general formula (3) (both manufactured by Air Products) can be used.
- examples of the aqueous medium (C) include water and a mixture of water and an organic solvent mixed therewith.
- the organic solvent miscible with water include alcohols such as methanol, ethanol, n- and isopropanol, polyalkylene glycols such as ethylene glycol, diethylene glycol and propylene glycol; alkyl ethers of polyalkylene glycol; N-methyl- And lactams such as 2-pyrrolidone.
- the aqueous medium (C) is preferably used in the step (2) so as to be in the range of 100 to 700% by mass with respect to the total amount of the hydrophilic group-containing urethane resin (A). It is more preferable to use in the range of%.
- the step (3) is a step of removing part or all of the organic solvent (D) contained in the mixture [II] obtained through the steps (1) and (2).
- the organic solvent (D) contained in the mixture [II] is preferably 95% by mass or more, more preferably 99% by mass or more, and particularly preferably all of the organic solvent (D) is removed by this step (3).
- a binder for ink jet printing ink comprising a composition in which the hydrophilic group-containing urethane resin (A) is stably dispersed or dissolved in the aqueous medium (C).
- Examples of the method for removing the organic solvent (D) include a distillation method and a reflux method. Especially, it is preferable to employ
- the mixture [II] in a reaction vessel is depressurized in the range of 1 KPa to 50 KPa with respect to normal pressure (100 kPa) over 0.5 hours to 5.0 hours, and then Distillation is performed for about 3 to 30 hours under the same reduced pressure conditions as described above.
- the amount of the organic solvent (D) in the mixture [II] during the vacuum distillation can be appropriately confirmed with a flow meter.
- the organic solvent (D) is removed by the distillation method, since the boiling point of the organic solvent (D) is usually lower than the boiling point of the aqueous medium (C), the organic solvent (D) is preferentially removed by distillation. However, part of the aqueous medium (C) is also removed.
- the aqueous medium (C) having the same mass as 50% by mass to 300% by mass of the total mass of the organic solvent (D) contained in the mixture [II] is removed from the mixture [II].
- the distillation is preferably continued until the aqueous medium (C) having the same mass as 50% by mass to 150% by mass is removed from the mixture [II].
- the acetylene compound (B) may be used in the same manner as in the step (2). Specifically, the total amount of the acetylene compound (B) is not used in the step (2) before the start of the step (3), preferably 60% by mass to 90% by mass, more preferably 60% by mass. The remaining acetylene compound (B) of 40% by mass to 10% by mass can be used in this step (3).
- the remaining 40% by mass to 10% by mass of the acetylene compound (B) may be used at any time as long as it is in the process (3), but the organic solvent contained in the mixture [II] After 80% by mass or more of the total amount of (D) is removed from the mixture [II], an aqueous medium having the same mass as 10% by mass of the total amount of the organic solvent (D) contained in the mixture [II] ( It is preferable to feed and mix until C) is removed.
- the acetylene compound (B) when 10 parts by mass of the organic solvent (D) is contained in the mixture [II], 8 parts by mass or more of the organic solvent (D) corresponding to 80% by mass is included in the mixture [II]. After the removal, it is preferable to supply the acetylene compound (B). The supply is preferably performed until 1 part by weight of the aqueous medium (C) corresponding to 10% by mass of the total amount of the organic solvent (D) is removed from the mixture [II]. Thereby, it is possible to suppress foaming that may occur during the production of the binder for inkjet printing ink, and to improve its production efficiency.
- the supply of the acetylene compound (B) to the mixture [II] may be performed all at once or sequentially.
- the amount of the acetylene compound (B) contained in the total amount of the binder for inkjet printing ink finally obtained is As described above, the amount is preferably in the range of 0.001 to 0.5 parts by mass with respect to 100 parts by mass of the hydrophilic group-containing urethane resin (A), and 0.005 to 0.1 parts by mass. A range is more preferable.
- the inkjet printing ink binder obtained by the steps (1) to (3) preferably has an average particle diameter of about 10 nm to 350 nm from the viewpoint of maintaining excellent ink ejection stability and blending stability. It is preferable that the hydrophilic group-containing urethane resin (A) is stably dispersed or dissolved in the aqueous medium (C).
- the inkjet printing ink binder preferably contains 5% by mass to 40% by mass of the hydrophilic group-containing urethane resin (A) with respect to the total amount of the inkjet printing ink binder. It is preferable to contain the mass%.
- the inkjet printing ink binder preferably contains the aqueous medium (C) in an amount of 60% to 95% by mass, and 70% to 90% by mass with respect to the total amount of the inkjet printing ink binder. More preferably.
- the binder for inkjet printing ink obtained by the manufacturing method of this invention can be used for manufacture of the ink for inkjet printing excellent in the discharge stability and the mixing
- the ink for ink-jet printing of the present invention contains pigments, dyes, and other various additives as required in addition to the ink-jet printing ink binder.
- the pigment known and commonly used inorganic pigments and organic pigments can be used.
- the inorganic pigment for example, titanium oxide, antimony red, bengara, cadmium red, cadmium yellow, cobalt blue, bitumen, ultramarine, carbon black, graphite and the like can be used.
- organic pigments examples include quinacridone pigments, quinacridone quinone pigments, dioxazine pigments, phthalocyanine pigments, anthrapyrimidine pigments, ansanthrone pigments, indanthrone pigments, flavanthrone pigments, perylene pigments, Organic pigments such as diketopyrrolopyrrole pigments, perinone pigments, quinophthalone pigments, anthraquinone pigments, thioindigo pigments, benzimidazolone pigments, and azo pigments can be used.
- These pigments can be used in combination of two or more. These pigments may be surface-treated and have a self-dispersing ability with respect to an aqueous medium.
- the dye examples include azo dyes such as monoazo and disazo, metal complex dyes, naphthol dyes, anthraquinone dyes, indigo dyes, carbonium dyes, quinoimine dyes, cyanine dyes, quinoline dyes, nitro dyes, nitroso dyes, benzoquinone dyes, Naphthoquinone dyes, naphthalimide dyes, perinone dyes, phthalocyanine dyes, triallylmethane, and the like can be used.
- azo dyes such as monoazo and disazo, metal complex dyes, naphthol dyes, anthraquinone dyes, indigo dyes, carbonium dyes, quinoimine dyes, cyanine dyes, quinoline dyes, nitro dyes, nitroso dyes, benzoquinone dyes, Naphthoquinone dyes, naphthalimide dyes, perinone dyes, phthalocyanine dyes,
- additives examples include polymer dispersants, viscosity modifiers, wetting agents, antifoaming agents, surfactants, preservatives, pH adjusting agents, chelating agents, plasticizers, ultraviolet absorbers, and antioxidants.
- acrylic resins and the like that have been used as binders for conventional ink jet printing inks can be used.
- polymer dispersant for example, an acrylic resin, a styrene-acrylic resin, or the like can be used, and any of a random type, a block type, and a graft type can be used.
- an acid or a base may be used in combination to neutralize the polymer dispersant.
- a surfactant such as an acetylene compound is added as the additive in the step of mixing the ink binder with a pigment or dye and blending the ink. May be used.
- the ink for inkjet printing can be prepared, for example, by the following manufacturing method.
- (X) A method of preparing an ink by collectively mixing the pigment or dye, the aqueous medium, the binder for inkjet ink, and, if necessary, the additive with various dispersing devices.
- An ink precursor made of an aqueous dispersion of a pigment or dye is prepared by mixing the pigment or dye, the aqueous medium and, if necessary, the additive using various dispersing devices;
- the ink precursor containing a pigment that can be used in the ink production method described in (Y) above can be prepared, for example, by the following method.
- (Y1) A pigment obtained by mixing a kneaded product obtained by pre-kneading additives such as a pigment and a polymer dispersing agent using a two-roll or a mixer with an aqueous medium using various dispersing devices.
- Examples of the dispersing device that can be used in the production of the ink for inkjet printing include, for example, an ultrasonic homogenizer, a high-pressure homogenizer, a paint shaker, a ball mill, a roll mill, a sand mill, a sand grinder, a dyno mill, a disperse mat, an SC mill, and a nanomizer.
- an ultrasonic homogenizer a high-pressure homogenizer
- a paint shaker a ball mill, a roll mill
- a sand mill a sand grinder
- a dyno mill a disperse mat
- SC mill and a nanomizer.
- two or more types can be used in combination.
- the coarse particles having a particle diameter of approximately 250 nm or more may be present.
- the coarse particles may cause clogging of printer nozzles and the like, and may deteriorate ink discharge characteristics. Therefore, the coarse particles may be coarsened by a method such as centrifugation or filtration after the preparation of the aqueous dispersion of the pigment or after the preparation of the ink. It is preferred to remove the particles.
- the ink for ink jet printing obtained above preferably has a volume average particle diameter of 200 nm or less, and particularly in the case of forming a higher gloss image such as photographic image quality, the range is from 80 nm to 120 nm. It is more preferable that
- the ink for inkjet printing may contain 0.1% by mass to 10% by mass of the hydrophilic group-containing urethane resin (A) with respect to the entire inkjet printing ink. It is preferable in order to achieve both quick drying and durability of the image, and further preferably contains 50 to 95% by mass of the aqueous medium (C) and 0.5 to 15% by mass of the pigment.
- the ink for ink jet printing of the present invention obtained by the above method can be used exclusively for ink jet printing using an ink jet printer, for example, for ink jet printing on a substrate such as paper, plastic film, metal film or sheet. be able to. If it is the ink for inkjet printing of this invention, a clear character and a photographic image can be formed on the said base-material surface.
- the ink for inkjet printing of the present invention can be used not only for forming the characters and photographs, but also for producing a color filter used for a liquid crystal display by printing on a transparent plastic substrate.
- the inkjet method is not particularly limited, but a known method such as a continuous injection type (charge control type, spray type, etc.), an on-demand type (piezo type, thermal type, electrostatic suction type, etc.) is applied. be able to.
- a continuous injection type charge control type, spray type, etc.
- an on-demand type piezo type, thermal type, electrostatic suction type, etc.
- the printed matter printed using the ink for ink jet printing of the present invention has excellent scratch resistance, so that it does not easily cause deterioration of a printed image due to lack of pigment or the like and has a high color density image. Therefore, it can be used for various applications such as photo printing by ink jet printing and printed matter obtained by high speed printing by ink jet printing.
- Example 1 64.2 parts by mass of methyl ethyl ketone was added to a nitrogen-substituted container equipped with a thermometer, a nitrogen gas inlet tube and a stirrer, and 18.4 parts by mass of 2,2-dimethylolpropionic acid and isophorone diisocyanate 33 were added in the methyl ethyl ketone. .9 parts by mass were mixed and reacted at 80 ° C. for 4 hours. After 4 hours, 38.2 parts by mass of methyl ethyl ketone was further supplied and cooled to 60 ° C.
- polyether polyol (“PTMG2000”, polytetramethylene glycol manufactured by Mitsubishi Chemical Corporation, number average molecular weight 1000) 140.1 Part by mass and 0.01 part by mass of dibutyltin dilaurate (hereinafter DBTDL) were added, and the reaction was continued at 80 ° C.
- PTMG2000 polytetramethylene glycol manufactured by Mitsubishi Chemical Corporation, number average molecular weight 1000
- DBTDL dibutyltin dilaurate
- the reaction was terminated by adding 1.3 parts by mass of methanol.
- an organic solvent solution of urethane resin was obtained by adding 41.6 parts by mass of methyl ethyl ketone.
- Example 2 63.9 parts by mass of methyl ethyl ketone was added to a nitrogen-substituted container equipped with a thermometer, a nitrogen gas inlet tube and a stirrer, and in this methyl ethyl ketone, 18.2 parts by mass of 2,2-dimethylolpropionic acid and isophorone diisocyanate 52 were added. .3 parts by mass were mixed and reacted at 80 ° C. for 4 hours. After 4 hours, 39.1 parts by mass of methyl ethyl ketone was further supplied and cooled to 60 ° C.
- polyether polyol (“PTMG 2000”, polytetramethylene glycol manufactured by Mitsubishi Chemical Corporation, number average molecular weight 1000) 120.2 mass. And 0.01 parts by mass of dibutyltin dilaurate (hereinafter DBTDL) were added, and further reacted at 80 ° C. for 4 hours to obtain an organic solvent solution of urethane resin.
- DBTDL dibutyltin dilaurate
- an organic solvent solution of the urethane resin is supplied with stirring to an aqueous solution obtained by mixing 15.0 parts by mass of a 50% by mass aqueous potassium hydroxide solution, 807.1 parts by mass of water and 1.8 parts by mass of ethylenediamine. To obtain a mixture (II′-2) thereof.
- Example 3 After aging the mixture (II′-1) obtained in Example 1 for about 2 hours, 0.07 parts by mass of Surfynol 440 (manufactured by Air Products) was added to the mixture (II′-1). The mixture (II-3) was obtained by stirring for about 20 minutes, and the mixture (II-3) was distilled under a reduced pressure of about 1 to 50 kPa.
- Surfynol 440 manufactured by Air Products
- Example 4 After aging the mixture (II′-1) obtained in Example 1 for about 2 hours, 0.03 parts by mass of Surfynol 440 (manufactured by Air Products) was added to the mixture (II′-1). The mixture (II-4) was obtained by stirring for about 20 minutes, and the mixture (II-4) was distilled under reduced pressure of about 1 to 50 kPa.
- Surfynol 440 manufactured by Air Products
- the nonvolatile content was adjusted by adding water to obtain 1000 parts by mass of a binder (III-4) for inkjet printing ink having a nonvolatile content of 20% by mass.
- Example 5 After aging the mixture (II′-1) obtained in Example 1 for about 2 hours, 0.10 parts by mass of Surfynol 440 (manufactured by Air Products) was added to the mixture (II′-1). The mixture (II-5) was obtained by stirring for about 20 minutes, and the mixture (II-5) was distilled under reduced pressure of about 1 to 50 kPa.
- Surfynol 440 manufactured by Air Products
- the non-volatile content was adjusted to obtain 1000 parts by mass of an inkjet printing ink binder (III-5) having a non-volatile content of 20% by mass.
- Example 6 64.1 parts by mass of methyl ethyl ketone was added to a nitrogen-substituted container equipped with a thermometer, a nitrogen gas inlet tube and a stirrer, and a polyether polyol (“PTMG2000” manufactured by Mitsubishi Chemical Corporation, polytetramethylene glycol, Number average molecular weight 1000) 140.1 parts by mass, 33.9 parts by mass of isophorone diisocyanate and 0.01 parts by mass of DBTDL were mixed and reacted at 80 ° C. for 4 hours. After 4 hours, 38.2 parts by mass of methyl ethyl ketone was further supplied, and after cooling to 60 ° C. or less, 18.4 parts by mass of 2,2-dimethylolpropionic acid was added and the reaction was continued at 80 ° C.
- PTMG2000 polyether polyol
- the reaction was terminated by adding 1.3 parts by mass of methanol.
- an organic solvent solution of urethane resin was obtained by adding 41.6 parts by mass of methyl ethyl ketone.
- Example 7 64.2 parts by mass of methyl ethyl ketone was added to a nitrogen-substituted container equipped with a thermometer, a nitrogen gas introduction tube and a stirrer, and in this methyl ethyl ketone, polyether polyol ("PTMG2000", polytetramethylene glycol manufactured by Mitsubishi Chemical Corporation) was added. , Number average molecular weight 1000) 140.1 parts by weight, 2,2-dimethylolpropionic acid 18.4 parts by weight, isophorone diisocyanate 33.9 parts by weight and dibutyltin dilaurate (hereinafter DBTDL) 0.01 parts by weight, The reaction was carried out at 80 ° C. for 4 hours. After 4 hours, another 38.2 parts by mass of methyl ethyl ketone was added, and the reaction was continued.
- PTMG2000 polytetramethylene glycol manufactured by Mitsubishi Chemical Corporation
- Example 1 The mixture (II′-1) obtained in Example 1 was aged for about 2 hours and then stirred for about 20 minutes, and the mixture (II′-1) was distilled under a reduced pressure of about 1 to 50 kPa. After confirming that 144 parts by mass of methyl ethyl ketone contained in the mixture (II′-1) and 147 parts by mass of water contained in the mixture (II′-1) were removed, the distillation under reduced pressure was completed. did. Subsequently, the non-volatile content was adjusted by adding water to obtain 1000 parts by mass of an inkjet printing ink binder (III′-1) having a non-volatile content of 20% by mass.
- the weight average molecular weight of the hydrophilic group-containing urethane resin (A) was measured by gel permeation chromatograph (GPC method). Specifically, the ink-jet printing ink binder of the present invention was coated on a glass plate with a 3 mil applicator and dried using a dryer to form a coating film. The obtained coating film was peeled off from the glass plate, and 0.4 g was dissolved in 100 g of tetrahydrofuran to obtain a measurement sample.
- HLC-8220 As a measuring device, a high performance liquid chromatograph HLC-8220 type manufactured by Tosoh Corporation was used. As a column, Tosoh Corporation column TSK-GEL (HXL-H, G5000HXL, G4000HXL, G3000HXL, G2000HXL) was used in combination.
- Standard polystyrenes manufactured by Showa Denko KK and Toyo Soda Co., Ltd.
- standard samples molecular weights: 44.48 million, 4250,000, 288,000, 2750,000, 1.85 million, 860,000, 450,000, 411,000, 35.
- Calibration curves were created using 50,000, 190,000, 160,000, 96,000, 50,000, 37,990, 198,000, 196,000, 5570, 4000, 2980, 2030, 500). .
- Tetrahydrofuran was used as the eluent and sample solution, and the weight average molecular weight was measured using a RI detector with a flow rate of 1 mL / min, a sample injection amount of 500 ⁇ L, and a sample concentration of 0.4%.
- the ion-exchanged water heated to 60 ° C. with a total amount of 8000 g was added to the kneaded material in 2 hours to obtain a colored resin composition having a nonvolatile content of 37.9% by mass.
- aqueous pigment dispersion precursor 18 kg was added to a bead mill (Nanomill NM-G2L manufactured by Asada Tekko Co., Ltd., beads ⁇ : 0.3 mm zirconia beads, bead filling amount: 85%, cooling water temperature: 10 ° C., After processing using a rotation speed: 2660 rotations / minute (disk peripheral speed: 12.5 m / sec), liquid feeding amount: 200 g / 10 seconds), the solution passing through the bead mill was centrifuged at 13000 G ⁇ 10 minutes, An aqueous pigment dispersion of a quinacridone pigment was obtained by performing a filtration treatment with a filter having an effective pore size of 0.5 ⁇ m. The concentration of the quinacridone pigment in this aqueous pigment dispersion was 14.9% by mass.
- Examples 1 to 7 and Comparative Example 1 were prepared so that the concentration of the quinacridone pigment was 4% by mass and the concentration of the hydrophilic group-containing urethane resin (A) was 1% by mass with respect to the total amount of ink for inkjet printing.
- any one of the binders (III-1) to (III-7), (III′-1) and (III′-8) for the inkjet printing ink obtained in 2 and 2, the quinacridone pigment obtained in Preparation Example 1, 2-Pyrrolidinone, triethylene glycol monobutyl ether, glycerin, surfactant (Surfinol 440, manufactured by Air Products) and ion-exchanged water were mixed and stirred according to the following blending ratio, respectively, and ink jet printing was performed.
- Inks (IV-1) to (IV-7), (IV′-1) and (IV′-8) were prepared.
- Viscosity change rate is less than 2% ⁇ : Viscosity change rate is 2% or more and less than 5% ⁇ : Viscosity change rate is 5% or more
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Abstract
Description
しかし、前記インク組成物であっても、産業界から求められる非常に高いレベルの吐出性や配合安定性には、あと一歩及ぶものではなく、長期間にわたって使用した場合に経時的なインク吐出ノズルの詰まり等を引き起こす場合があった。
親水性基含有ポリオール(a1-1)を含むポリオール(a1)と、ポリイソシアネート(a2)とを有機溶剤(D)中または無溶剤下で反応させ、必要に応じ有機溶剤(D)を供給することによって親水性基含有ウレタン樹脂(A)の有機溶剤(D)溶液[I]を製造する工程(1)、
前記有機溶剤(D)溶液[I]と前記アセチレン化合物(B)と前記水系媒体(C)とを混合することによって混合物[II]を製造する工程(2)、及び、
前記混合物[II]中に含まれる有機溶剤(D)の一部または全部を除去する工程(3)を含むことを特徴とするインクジェット印刷インク用バインダーの製造方法に関するものである。
前記工程(1)は、親水性基含有ポリオール(a1-1)を含むポリオール(a1)と、ポリイソシアネート(a2)とを有機溶剤(D)中または無溶剤下で反応させ、必要に応じ有機溶剤(D)を供給することによって親水性基含有ウレタン樹脂(A)の有機溶剤(D)溶液[I]を製造する工程である。
また、前記親水性基含有ポリオール(a1-1)と前記ポリイソシアネート(a2)とを無溶剤下で反応させることによって親水性基含有ウレタンプレポリマー(A-1)を製造し、次いで、前記ウレタンプレポリマー(A-1)と、その他のポリオール(a1-2)及び有機溶剤(D)を含む混合物とを混合し反応させることによって親水性基含有ウレタン樹脂(A)の有機溶剤(D)溶液[I]を製造することもできる。
前記工程(2)は、前記工程(1)で得られた親水性基含有ウレタン樹脂(A)の有機溶剤(D)溶液[I]と、アセチレン化合物(B)と水系媒体(C)と、必要に応じてその他の添加剤とを混合することによって、それらの混合物[II]を製造する工程である。
ここで、前記アセチレン化合物(B)を前記工程(2)で使用せず、その全量を、従来技術のように、インクジェット印刷インク用バインダーと顔料等とを混合しインクを製造する際に混合、使用して得られたインクジェット印刷用インクは、本願発明の製造方法で得られたインクジェット印刷インク用バインダーを用いて得られたインクジェット印刷用インクと比較して、長期間の保存によって分離を引き起こしたり、長期間の印刷によってインク吐出ノズルの詰まりやインク吐出方向の異常を引き起こす場合がある。
前記アセチレンモノアルコールは、アセチレン基と1個の水酸基を有する化合物であって、例えば下記一般式(3)で示される構造を有する化合物を使用することができる。
前記アセチレングリコールは、アセチレン基と2個の水酸基を有する化合物であって、例えば下記一般式(1)や(2)で示される化合物を使用することができる。
前記したなかでも、アセチレングリコールを使用することが、インクの優れた配合安定性、及びインクの優れた吐出安定性を長期間維持できるため好ましい。
前記工程(3)は、前記工程(1)及び(2)を経ることで得られた前記混合物[II]中に含まれる有機溶剤(D)の一部または全部を除去する工程である。
これにより、前記混合物[II]中に含まれる有機溶剤(D)を、より好ましくは99質量%以上を、特に好ましくは実質的に全て除去することが可能となる。
本発明の製造方法によって得られたインクジェット印刷インク用バインダーは、インクの吐出安定性や配合安定性に優れたインクジェット印刷用インクの製造に使用することができる。
前記無機顔料としては、例えば酸化チタン、アンチモンレッド、ベンガラ、カドミウムレッド、カドミウムイエロー、コバルトブルー、紺青、群青、カーボンブラック、黒鉛等を使用することができる。
(y1)顔料及び高分子分散剤等の添加剤を2本ロールやミキサー等を用いて予備混練して得られた混練物と、水系媒体とを各種の分散装置を用いて混合することによって顔料を含む水系分散体からなるインク前駆体を調製する方法。
(y2)顔料と高分子分散剤を各種の分散装置を用いて混合した後、前記高分子分散剤の溶解性をコントロールすることによって該高分子分散剤を前記顔料の表面に堆積させ、更に分散装置を用いてそれらを混合することで顔料を含む水系分散体からなるインク前駆体を調製する方法。
(y3)顔料と前記添加物とを各種の分散装置を用いて混合し、次いで前記混合物と樹脂エマルジョンとを分散装置を用いて混合することによって顔料を含む水系分散体からなるインク前駆体を調製する方法。
温度計、窒素ガス導入管及び攪拌機を備えた窒素置換された容器中にメチルエチルケトン64.2質量部を加え、該メチルエチルケトン中で、2,2-ジメチロールプロピオン酸18.4質量部及びイソホロンジイソシアネート33.9質量部を混合し、80℃で4時間反応させた。4時間後、メチルエチルケトンを更に38.2質量部を供給し、60℃以下に冷却した後、ポリエーテルポリオール(「PTMG2000」三菱化学株式会社製のポリテトラメチレングリコール、数平均分子量1000)140.1質量部及びジブチル錫ジラウリレート(以下DBTDL)0.01質量部を追加し、80℃で反応を継続させた。
次いで、水を加えることによって不揮発分を調整することにより、不揮発分20質量%のインクジェット印刷インク用バインダー(III-1)1000質量部を得た。
温度計、窒素ガス導入管及び攪拌機を備えた窒素置換された容器中にメチルエチルケトン63.9質量部を加え、該メチルエチルケトン中で、2,2-ジメチロールプロピオン酸18.2質量部及びイソホロンジイソシアネート52.3質量部を混合し、80℃で4時間反応させた。4時間後、メチルエチルケトンを更に39.1質量部供給し、60℃以下に冷却した後、ポリエーテルポリオール(「PTMG2000」三菱化学株式会社製のポリテトラメチレングリコール、数平均分子量1000)120.2質量部及びジブチル錫ジラウリレート(以下DBTDL)0.01質量部を追加し、更に80℃で4時間反応することでウレタン樹脂の有機溶剤溶液を得た。
前記実施例1で得た混合物(II’-1)を、約2時間エージングした後、前記混合物(II’-1)中にサーフィノール440(エアープロダクツ社製)0.07質量部を加え、約20分攪拌することにより混合物(II-3)を得、該混合物(II-3)を約1~50kPaの減圧条件下で蒸留した。
前記実施例1で得た混合物(II’-1)を、約2時間エージングした後、前記混合物(II’-1)中にサーフィノール440(エアープロダクツ社製)0.03質量部を加え、約20分攪拌することにより混合物(II-4)を得、該混合物(II-4)を約1~50kPaの減圧条件下で蒸留した。
前記実施例1で得た混合物(II’-1)を、約2時間エージングした後、前記混合物(II’-1)中にサーフィノール440(エアープロダクツ社製)0.10質量部を加え、約20分攪拌することにより混合物(II-5)を得、該混合物(II-5)を約1~50kPaの減圧条件下で蒸留した。
温度計、窒素ガス導入管及び攪拌機を備えた窒素置換された容器中にメチルエチルケトン64.1質量部を加え、該メチルエチルケトン中でポリエーテルポリオール(「PTMG2000」三菱化学株式会社製のポリテトラメチレングリコール、数平均分子量1000)140.1質量部、イソホロンジイソシアネート33.9質量部及びDBTDL0.01質量部を混合し、80℃で4時間反応させた。4時間後、メチルエチルケトンを更に38.2質量部供給し、60℃以下に冷却した後、2,2-ジメチロールプロピオン酸18.4質量部を追加し80℃で反応を継続させた。
次いで、メチルエチルケトン41.6質量部を追加することによってウレタン樹脂の有機溶剤溶液を得た。
次いで、水を加えることによって不揮発分を調整することにより、不揮発分20質量%のインクジェット印刷インク用バインダー(III-6)1000質量部を得た。
温度計、窒素ガス導入管及び攪拌機を備えた窒素置換された容器中にメチルエチルケトン64.2質量部を加え、該メチルエチルケトン中で、ポリエーテルポリオール(「PTMG2000」三菱化学株式会社製のポリテトラメチレングリコール、数平均分子量1000)140.1質量部、2,2-ジメチロールプロピオン酸18.4質量部、イソホロンジイソシアネート33.9質量部及びジブチル錫ジラウリレート(以下DBTDL)0.01質量部を混合し、80℃で4時間反応させた。4時間後、メチルエチルケトンを更に38.2質量部追加し、反応を継続させた。
次いで、水を加えることによって不揮発分を調整することにより、不揮発分20質量%のインクジェット印刷インク用バインダー(III-7)1000質量部を得た。
前記実施例1で得た混合物(II’-1)を約2時間エージングした後、約20分攪拌し、該混合物(II’-1)を約1~50kPaの減圧条件下で蒸留した。
前記混合物(II’-1)中に含まれるメチルエチルケトンの144質量部と、前記混合物(II’-1)中に含まれる水の147質量部とを除去したことを確認し、前記減圧蒸留を終了した。
次いで、水を加えることによって不揮発分を調整することにより、不揮発分20質量%のインクジェット印刷インク用バインダー(III’-1)1000質量部を得た。
前記実施例1で得た混合物(II’-1)を約2時間エージングした後、前記混合物(II’-1)中にノプコ8034L(サンノプコ製:シリコーン鉱物油系消泡剤)0.07質量部を加え、約20分攪拌することにより混合物(II’-8)を得、該混合物(II’-8)を約1~50kPaの減圧条件下で蒸留した。
次いで、水を加えることによって不揮発分を調整することにより、不揮発分20質量%のインクジェット印刷インク用バインダー(III’-8)1000質量部を得た。
前記親水性基含有ウレタン樹脂(A)の重量平均分子量は、ゲル・パーミエーション・クロマトグラフ(GPC法)により測定した。具体的には、本発明のインクジェット印刷インク用バインダーを、ガラス板上に3milアプリケーターで塗工し、ドライヤーを用いて乾燥させることにより塗膜を作成した。得られた塗膜をガラス板から剥し、0.4gをテトラヒドロフラン100gに溶解して測定試料とした。
前記で得たインクジェット印刷インク用バインダー中の残留しうる溶剤(メチルエチルケトン)の量は、ガスクロマトグラフ(株式会社 島津製作所製の「GC-2014」)を用いて測定した。
○:残留有機溶剤量が100ppm未満で、かつ減圧蒸留時間が5時間以内であったもの。
△:残留有機溶剤量が100ppm未満または減圧蒸留時間が5時間以内であったもの。
×:残留有機溶剤量が100ppm以上で、かつ、減圧蒸留時間が5時間を越えたもの。
ビニル重合体(スチレン/アクリル酸/メタクリル酸=77/10/13(質量比)であり、重量平均分子量が11000、酸価156mgKOH/g)を1500g、キナクリドン系顔料(クロモフタールジェットマジェンタDMQ、チバ・スペシャルティ・ケミカルズ社製)を4630g、フタルイミドメチル化3,10-ジクロロキナクリドン(1分子あたりの平均フタルイミドメチル基数が1.4)を380g、ジエチレングリコールを2600g、及び34質量%水酸化カリウム水溶液688gを、容量50LのプラネタリーミキサーPLM-V-50V(株式会社井上製作所製)に仕込み、ジャケットを加温し、内容物温度が60℃になるまで低速(自転回転数:21回転/分,公転回転数:14回転/分)で混練を行い、内容物温度が60℃に達した後、高速(自転回転数:35回転/分,公転回転数:24回転/分)に切り替え、4時間、混練を継続した。
インクジェット印刷用インクの全量に対してキナクリドン系顔料の濃度が4質量%で、かつ親水性基含有ウレタン樹脂(A)の濃度が1質量%となるよう、前記実施例1~7及び比較例1及び2で得たインクジェット印刷インク用バインダー(III-1)~(III-7)、(III’-1)、(III’-8)のいずれかと、調製例1で得たキナクリドン系顔料と、2-ピロリジノンと、トリエチレングリコールモノブチルエーテルと、グリセリンと、界面活性剤(サーフィノール440、エアープロダクツ社製)とイオン交換水とを、下記配合割合にしたがって混合、攪拌することによって、それぞれインクジェット印刷用インク(IV-1)~(IV-7)、(IV’-1)及び(IV’-8)を調製した。
・調製例1で得たキナクリドン系顔料水系分散体(顔料濃度14.9質量%);26.8g
・2-ピロリジノン;8.0g
・トリエチレングリコールモノブチルエーテル;8.0g
・グリセリン;3.0g
・界面活性剤(サーフィノール440、エアープロダクツ社製);0.5g
・イオン交換水;48.7g
・前記実施例1~7ならびに比較例1及び2で得たインクジェット印刷インク用バインダー;5.0g
インクの配合安定性は、前記で得たインクジェット印刷用インクの粘度と、該インク中の分散粒子の粒子径に基づいて評価した。
[粘度に基づくインクの配合安定性(I)の評価方法]
前記で得たインクジェット印刷用インクの初期粘度を、東機産業(株)製のVISCOMETER TV-22を用いて測定した。次いで、前記インクをスクリュー管等のガラス容器に密栓し、70℃の恒温器で6週間の加熱試験を行った後の前記インクの粘度を、前記と同様の方法で測定した。
前記加熱試験前後のインクの粘度変化を、下記式(I)により算出し評価した。
[(加熱試験後のインク中の分散粒子の粒子径)/(加熱試験前のインク中の分散粒子の粒子径)]×100
○: 粒子径の変化の割合が、3%未満
△: 粒子径の変化の割合が、3%以上10%未満
×: 粒子径の変化の割合が、10%以上
前記で得たインクジェット印刷用インク中に含まれる分散粒子の粒子径を、日機装(株)社製のマイクロトラック UPA EX150を用いて測定した。次いで、前記インクをスクリュー管等のガラス容器に密栓し、70℃の恒温器で6週間の加熱試験を行った後の前記インク中に含まれる分散粒子の粒子径を、前記と同様の方法で測定した。
前記加熱試験前後のインク中に含まれる分散粒子の粒子径変化を、下記式(II)により算出し評価した。
[(加熱試験後のインクの粘度)/(加熱試験前のインクの粘度)]×100
○: 粘度の変化の割合が、2%未満
△: 粘度の変化の割合が、2%以上5%未満
×: 粘度の変化の割合が、5%以上
前記のインクジェット印刷用インクを黒色インクカートリッジに充填したPhotosmart D5360(ヒューレットパッカード社製)にて、診断ページを印刷しノズルの状態を確認した。1ページあたり18cm×25cmの領域の印字濃度設定100%のベタ印刷を連続で500ページ実施した後、再度診断ページを印刷しノズルの状態を確認した。連続ベタ印刷の前後でのノズルの状態変化をインク吐出安定性として評価した。評価基準を以下に記す。
◎:ノズルの状態に変化がなく、吐出異常が発生していないもの
○:ノズルへの若干のインクの付着が確認されたものの、インクの吐出方向の異常は発生していないもの
△:前記ベタ印刷を連続で500ページ実施した後に、インクの吐出方向の異常やインクの不吐出が生じたもの
×:印刷途中でインクの吐出方向の異常やインクの不吐出が生じ、連続して500ページの印刷を完了できなかったもの
Claims (16)
- 親水性基含有ウレタン樹脂(A)と、アセチレン化合物(B)と、水系媒体(C)とを含有するインクジェット印刷インク用バインダーの製造方法であって、前記製造方法が、
親水性基含有ポリオール(a1-1)を含むポリオール(a1)と、ポリイソシアネート(a2)とを有機溶剤(D)中または無溶剤下で反応させ、必要に応じ有機溶剤(D)を供給することによって親水性基含有ウレタン樹脂(A)の有機溶剤(D)溶液[I]を製造する工程(1)、
前記有機溶剤(D)溶液[I]と前記アセチレン化合物(B)と前記水系媒体(C)とを混合することによって混合物[II]を製造する工程(2)、及び、
前記混合物[II]中に含まれる有機溶剤(D)の一部または全部を除去する工程(3)を含むことを特徴とするインクジェット印刷インク用バインダーの製造方法。 - 前記工程(3)が、前記混合物[II]中に含まれる有機溶剤(D)の一部または全部とともに、前記水系媒体(C)の一部を除去する工程であって、除去される前記水系媒体(C)の質量が、前記混合物[II]中に含まれる前記有機溶剤(D)の全質量の50質量%~300質量%と同質量である、請求項1に記載のインクジェット印刷インク用バインダーの製造方法。
- 前記アセチレン化合物(B)の使用量が、前記親水性基含有ウレタン樹脂(A)100質量部に対して0.001質量部~0.5質量部である、請求項1に記載のインクジェット印刷インク用バインダーの製造方法。
- 前記アセチレン化合物(B)の60質量%~90質量%が前記工程(3)の開始前に使用され、残りの40質量%~10質量%のアセチレン化合物(B)が、前記工程(3)で使用される、請求項3に記載のインクジェット印刷インク用バインダーの製造方法。
- 前記工程(3)で使用される前記アセチレン化合物(B)の40質量%~10質量%が、前記混合物[II]中に含まれる前記有機溶剤(D)の全量の80質量%以上が前記混合物[II]から除去された後、前記混合物[II]中に含まれる前記有機溶剤(D)の全量の10質量%と同質量の水系媒体(C)が除去されるまでに、前記混合物[II]中に供給される、請求項4に記載のインクジェット印刷インク用バインダーの製造方法。
- 前記工程(1)が、親水性基含有ポリオール(a1-1)とポリイソシアネート(a2)とを有機溶剤(D)中で反応させることによって分子末端にイソシアネート基を有する親水性基含有ウレタンプレポリマー(A-1)の有機溶剤(D)溶液を製造し、
次いで前記ウレタンプレポリマー(A-1)の有機溶剤(D)溶液とその他のポリオール(a1-2)とを混合し反応させることによって親水性基含有ウレタン樹脂(A)の有機溶剤(D)溶液を製造する工程である、請求項1に記載のインクジェット印刷インク用バインダーの製造方法。 - 前記工程(2)が、前記親水性基含有ウレタン樹脂(A)の有機溶剤(D)溶液[I]と前記水系媒体(C)とを混合することによって、親水性基含有ウレタン樹脂(A)と有機溶剤(D)と前記水系媒体(C)を含み前記親水性基含有ウレタン樹脂(A)が前記水系媒体(C)中に分散または溶解した混合物[II’]を得、次いで、前記混合物[II’]と前記アセチレン化合物(B)とを混合することによって、それらの混合物[II]を製造する工程である、請求項1に記載のインクジェット印刷インク用バインダーの製造方法。
- 前記有機溶剤(D)及び/または前記水系媒体(C)の一部を除去する方法が減圧蒸留法である、請求項1に記載のインクジェット印刷インク用バインダーの製造方法。
- 前記親水性基含有ウレタン樹脂(A)が、親水性基としてカチオン性基またはアニオン性基を有するものである、請求項1に記載のインクジェット印刷インク用バインダーの製造方法。
- 前記アニオン性基が、カルボキシル基及びカルボキシレート基からなる群より選ばれる1種以上である、請求項9に記載のインクジェット印刷インク用バインダーの製造方法。
- 前記アセチレン化合物(B)が、アセチレンモノアルコール及びアセチレングリコールからなる群より選ばれる1種以上を含むものである、請求項1に記載のインクジェット印刷インク用バインダーの製造方法。
- 請求項1~11のいずれかに記載の製造方法によって得られたインクジェット印刷インク用バインダーと、顔料または染料とを含有するインクジェット印刷用インク。
- 前記親水性基含有ウレタン樹脂(A)が、前記インクジェット印刷インクの全量に対して0.1~10質量%含まれ、かつ、前記水系媒体(C)が、前記インクジェット印刷インクの全量に対して0.1~50質量%含まれるものである、請求項12に記載のインクジェット印刷用インク。
- 請求項12に記載のインクジェット印刷用インクによって印刷の施された印刷物。
- 請求項1~11のいずれか1項に記載の製造方法によって得られたインクジェット印刷インク用バインダーと、顔料または染料とを含有するカラーフィルタ製造用インクジェット印刷インク。
- 透明プラスチック基材上に、請求項15記載のカラーフィルタ製造用インクジェット印刷インクによって印刷の施されたカラーフィルター。
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CN201180007860.2A CN102741366B (zh) | 2010-05-28 | 2011-03-28 | 喷墨印刷墨液用粘合剂的制造方法、喷墨印刷用墨液以及印刷物 |
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US13/504,184 US8669324B2 (en) | 2010-05-28 | 2011-03-28 | Method for producing binder for inkjet printing ink, inkjet printing ink, and printed material |
KR1020127004457A KR101736188B1 (ko) | 2010-05-28 | 2011-03-28 | 잉크젯 인쇄 잉크용 바인더의 제조 방법, 잉크젯 인쇄용 잉크 및 인쇄물 |
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CN102741366A (zh) | 2012-10-17 |
TW201207065A (en) | 2012-02-16 |
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TWI499652B (zh) | 2015-09-11 |
US8669324B2 (en) | 2014-03-11 |
KR101736188B1 (ko) | 2017-05-16 |
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