WO2015080142A1 - 光硬化性インクジェットインク - Google Patents
光硬化性インクジェットインク Download PDFInfo
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- WO2015080142A1 WO2015080142A1 PCT/JP2014/081213 JP2014081213W WO2015080142A1 WO 2015080142 A1 WO2015080142 A1 WO 2015080142A1 JP 2014081213 W JP2014081213 W JP 2014081213W WO 2015080142 A1 WO2015080142 A1 WO 2015080142A1
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- ink
- compound
- acrylate
- meth
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- 0 *(c1ccccc1)c1ccccc1 Chemical compound *(c1ccccc1)c1ccccc1 0.000 description 5
- QZHCOWPVLXDSCW-UHFFFAOYSA-N CC(C)(c1ccc(C(C)(c(cc2)ccc2OC(C=C)=O)c(cc2)ccc2OC(C=C)=O)cc1)c(cc1)ccc1OC(C=C)=O Chemical compound CC(C)(c1ccc(C(C)(c(cc2)ccc2OC(C=C)=O)c(cc2)ccc2OC(C=C)=O)cc1)c(cc1)ccc1OC(C=C)=O QZHCOWPVLXDSCW-UHFFFAOYSA-N 0.000 description 2
- GGBPYSPYXCKTOP-UHFFFAOYSA-N CC(C)(c(cc1)ccc1OC(C=C)=C)c1cc(C(C)(C)c(cc2)ccc2OC(C=C)=O)cc(C(C)(C)c(cc2)ccc2OC(C=C)=O)c1 Chemical compound CC(C)(c(cc1)ccc1OC(C=C)=C)c1cc(C(C)(C)c(cc2)ccc2OC(C=C)=O)cc(C(C)(C)c(cc2)ccc2OC(C=C)=O)c1 GGBPYSPYXCKTOP-UHFFFAOYSA-N 0.000 description 1
- PQRKTDPAXZEYSB-UHFFFAOYSA-N CC(C)(c(cc1)ccc1OC(C=C)=O)c1cc(C(C)(C)c(cc2)ccc2OC(C=C)=O)cc(C(C)(C)c(cc2)ccc2OC(C=C)=O)c1 Chemical compound CC(C)(c(cc1)ccc1OC(C=C)=O)c1cc(C(C)(C)c(cc2)ccc2OC(C=C)=O)cc(C(C)(C)c(cc2)ccc2OC(C=C)=O)c1 PQRKTDPAXZEYSB-UHFFFAOYSA-N 0.000 description 1
- WTWRRJCUPNEVPH-UHFFFAOYSA-N CC(c(cc1)ccc1OC(C=C)=O)(c(cc1)ccc1OC(C=C)=O)c(cc1)ccc1OC(C=C)=O Chemical compound CC(c(cc1)ccc1OC(C=C)=O)(c(cc1)ccc1OC(C=C)=O)c(cc1)ccc1OC(C=C)=O WTWRRJCUPNEVPH-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
-
- 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
- C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
- C08F20/10—Esters
- C08F20/20—Esters of polyhydric alcohols or polyhydric phenols, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
- C08F20/10—Esters
- C08F20/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F20/30—Esters containing oxygen in addition to the carboxy oxygen containing aromatic rings in the alcohol moiety
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
- C08F20/10—Esters
- C08F20/34—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate
- C08F20/36—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate containing oxygen in addition to the carboxy oxygen, e.g. 2-N-morpholinoethyl (meth)acrylate or 2-isocyanatoethyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/20—Esters of polyhydric alcohols or phenols, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
- C08F220/281—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing only one oxygen, e.g. furfuryl (meth)acrylate or 2-methoxyethyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/34—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate
- C08F220/36—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate containing oxygen in addition to the carboxy oxygen, e.g. 2-N-morpholinoethyl (meth)acrylate or 2-isocyanatoethyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/18—Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0012—Arrays characterised by the manufacturing method
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/418—Refractive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2551/00—Optical elements
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
- C08F220/285—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing a polyether chain in the alcohol moiety
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/30—Esters containing oxygen in addition to the carboxy oxygen containing aromatic rings in the alcohol moiety
- C08F220/301—Esters containing oxygen in addition to the carboxy oxygen containing aromatic rings in the alcohol moiety and one oxygen in the alcohol moiety
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
- C08F222/1006—Esters of polyhydric alcohols or polyhydric phenols
- C08F222/103—Esters of polyhydric alcohols or polyhydric phenols of trialcohols, e.g. trimethylolpropane tri(meth)acrylate
Definitions
- the present invention relates to a photocurable inkjet ink suitably used for manufacturing a light guide plate which is a member of a backlight unit incorporated in an optical apparatus such as a video display device. More specifically, the present invention relates to a microlens used for manufacturing a light guide plate and a photocurable inkjet ink used for a liquid-repellent cured film used for controlling the shape of the microlens.
- the microlenses formed on the light guide plate for video display devices have been formed by injection molding using a mold.
- Patent Documents 1 and 2 Recently, as a manufacturing method having a high degree of design freedom, a method of directly forming a microlens on a substrate surface using an inkjet method has been proposed (see, for example, Patent Documents 1 and 2).
- the microlens manufacturing method using such an inkjet method can easily change the microlens pattern to be printed by a personal computer or the like, the number of manufacturing processes does not change even for the production of a small variety of products. It is expected from the viewpoint that production costs can be suppressed.
- an acrylic resin-based substrate (hereinafter referred to as “PMMA substrate”) has been used for some time, but recently, from the viewpoint of weight reduction, moisture resistance, and heat resistance of the substrate, PMMA has been used.
- a polycarbonate resin substrate (hereinafter referred to as “PC substrate”), a polystyrene resin substrate (hereinafter referred to as “PS substrate”), and an acrylic / styrene copolymer polymer substrate (hereinafter referred to as “MS substrate”) having a higher refractive index than the substrate. Etc.) is being developed.
- the refractive index of the microlens, the liquid-repellent cured film that controls the shape of the microlens, and the substrate are the same. This is because when the refractive index of the liquid repellent cured film is lower than the refractive index of the substrate, a difference in refractive index occurs at the interface between the substrate and the liquid repellent cured film, and light at a shallow incident angle is more likely to cause total reflection. Therefore, there is a problem that the light extraction efficiency is lowered. The same applies to the relationship between the refractive index of the liquid repellent cured film and the refractive index of the microlens. Therefore, in order to solve these problems, it is necessary to form a microlens and a liquid repellent cured film having a refractive index comparable to that of the substrate.
- the liquid-repellent cured film that controls the shape of the microlens and the microlens is required to have a cured product having a light transmittance that is suppressed as much as possible. This is because if the cured product has a high yellowishness, the light guide plate may become yellowish and high quality image quality may not be obtained, and high light transmittance is required to obtain higher light extraction efficiency. It is.
- the inkjet ink that has been used for the PMMA substrate is used for a PC substrate, a PS substrate, and an MS substrate having a high refractive index, the light extraction efficiency is lowered, and thus an inkjet ink that can obtain a cured product having a higher refractive index is required. .
- composition having a high refractive index a composition using a monomer having a fluorene skeleton in the molecule (for example, see Patent Documents 3 to 5), and a composition using a monomer having a phosphine oxide in the molecule (for example, Patent Document 6) And a composition using a monomer having a bisphenol A skeleton in the molecule (see, for example, Patent Documents 7 to 8).
- compositions having a high refractive index of the cured product has a strong yellowish color and a composition having a low yellowness of the cured product has a low refractive index. It was.
- an ink-jet ink that provides a photocured product that is excellent in photocurability, has a high refractive index, and has a reduced yellow tint.
- the present inventors have developed an ink-jet ink that is capable of obtaining a photocured product that has excellent photocurability, high refractive index, and low yellowness by using an acrylate having a specific structure. Successful.
- a skeleton structure comprising at least three benzene rings and at least one group selected from the following organic group a, wherein all the bonds between the benzene rings are made through one of the groups, and 3 to 60% by weight of the compound (A2) having at least one group selected from the following organic group group d to be bonded, and 1 to 60% by weight of the compound (B) represented by the following formula (7) or (8)
- a photocurable inkjet ink comprising: [Organic group a]
- R 1 , R 2 and R 3 are each independently hydrogen or an alkyl group having 1 to 5 carbon atoms, and * represents the bonding position of the benzene ring.)
- R 1 , R 2 and R 3 are each independently hydrogen or an alkyl group having 1 to 5 carbon atoms, and * represents the bonding position of the benzene ring.
- R 7 is independently a divalent hydrocarbon group having 1 to 10 carbon atoms
- R 6 and R 8 are independently hydrogen or a methyl group
- i is an integer of 1 to 5
- n is (It is an integer from 0 to 5.)
- R 9 , R 10 and R 11 is a group selected from the above organic group b, and the remainder is a hydroxyl group or an alkyl group having 1 to 5 carbon atoms.
- R 12 , R 13 and R 14 is a group selected from the above organic group b, and the remainder is a hydroxyl group or an alkyl group having 1 to 5 carbon atoms.
- a liquid-repellent cured film having a refractive index of 1.55 or more with respect to light having a wavelength of 589 nm is formed on a substrate having a refractive index of 1.55 or more with respect to light having a wavelength of 589 nm.
- the ink-jet ink of the present invention is excellent in ejectability and photocurability, and the resulting photocured product has a high refractive index and a low yellowness.
- these photocured products can be suitably used as a microlens or a liquid repellent cured film capable of controlling the shape of the microlens.
- (meth) acrylate is used to indicate both or one of acrylate and methacrylate.
- “Refractive index” is a value for light having a wavelength of 589 nm.
- the ink that forms the microlens is sometimes referred to as “lens ink”, and the ink that forms the liquid-repellent cured film that can control the shape of the microlens is sometimes referred to as “surface treatment agent”. 1.
- the photocurable inkjet ink of the present invention (hereinafter also referred to as “the ink of the present invention”) comprises at least one benzene ring and at least one group selected from the following organic group a, All the bonds between the rings contain a compound (A) having a skeletal structure formed through one of the groups and at least one group selected from the following organic group b bonded to the benzene ring. [Organic group a]
- R 1 , R 2 and R 3 are each independently hydrogen or an alkyl group having 1 to 5 carbon atoms, and * represents the bonding position of the benzene ring.)
- R 1 , R 2 and R 3 are each independently hydrogen or an alkyl group having 1 to 5 carbon atoms, and * represents the bonding position of the benzene ring.
- the inkjet ink of the present invention may further contain a compound (B) represented by the following formula (7) or (8) and a photopolymerization initiator (C).
- the ink of the present invention may contain a solvent (D) or a (meth) acrylate monomer (E) other than the compound (A) and the compound (B) for viscosity adjustment.
- a surfactant (F) may be included in order to adjust the surface tension or to impart liquid repellency to the cured film.
- you may contain a radical polymerizable group containing compound (G), a ultraviolet absorber, antioxidant, a polymerization inhibitor, a thermosetting compound, etc. as needed.
- the ink of the present invention is preferably colorless from the viewpoint of light transmittance, but may be colored within a range not impeding the effects of the invention.
- the color of the obtained cured film or the like is not preferred to be yellowish, it may be colored blue, for example.
- a colorant may be included in order to facilitate identification from the substrate.
- the compound (A) comprises at least three benzene rings and at least one group selected from the following organic group group a, and the skeleton structure in which all the bonds of the benzene rings are made through one of the groups, It is a compound having at least one group selected from the following organic group group b bonded to a benzene ring. [Organic group a]
- R 1 , R 2 and R 3 are each independently hydrogen or an alkyl group having 1 to 5 carbon atoms, and * represents the bonding position of the benzene ring.)
- R 1 , R 2 and R 3 are each independently hydrogen or an alkyl group having 1 to 5 carbon atoms, and * represents the bonding position of the benzene ring.
- the skeleton structure comprises at least one benzene ring and at least one group selected from the following organic group group a. That is, the skeleton structure does not include a structural site other than a group selected from a benzene ring and an organic group group a.
- the compound (A) can contain a structural portion other than the skeleton structure and a group selected from the following organic group b, and has, for example, a hydroxyl group, an alkyl group or the like bonded to the benzene ring contained in the skeleton structure. You may do it.
- the skeleton structure In the skeleton structure, all the bonds between the benzene rings are made through one group. That is, all the bonds between each benzene ring and other benzene rings are made by a group selected from the organic group group a. Therefore, the skeleton structure does not include a biphenyl bond in which benzene rings are directly bonded to each other. In addition, each benzene ring and another benzene ring are bonded through only one group, and are not bonded by two or more groups.
- the compound (A) has a structure in which a hydrogen atom bonded to a benzene ring contained in the skeleton structure is replaced with a group selected from the organic group b.
- a compound having a group (b-1) is preferable, and benzene rings are bonded to each other with a propane-2,2-diyl group or an ethane-1,1,1-triyl group. More preferably, it is a compound.
- the compound (A) is preferably a compound represented by any one of the formulas (1) to (3), and if it is a compound represented by any one of the formulas (4) to (6), the ink Since a cured film having a low viscosity and a high refractive index can be obtained, it is more preferable.
- R 9 , R 10 and R 11 is a group selected from the above organic group b, and the remainder is a hydroxyl group or an alkyl group having 1 to 5 carbon atoms.
- R 12 , R 13 and R 14 is a group selected from the above organic group b, and the remainder is a hydroxyl group or an alkyl group having 1 to 5 carbon atoms.
- R 15 , R 16 and R 17 is a group selected from the organic group b, and the remainder is a hydroxyl group or an alkyl group having 1 to 5 carbon atoms.
- Such a compound can be synthesized by adding a compound having an acryloyl group to the hydroxyl group of an existing polyhydric phenol.
- TrisP-PA trade name: Honshu Chemical Industry Co., Ltd.
- TrisP-HAP trade name: Honshu Chemical Industry Co., Ltd.
- TrisP-TC trade name: Honshu Chemical Industry Co., Ltd.
- BIP-BZ trade name: Asahi Organic Materials Industry Co., Ltd.
- BIP-PHBZ trade name: Asahi Organic Materials Industry Co., Ltd.
- 3PC trade name: Asahi Organic Materials Industry Co., Ltd.
- TEP- And TPA trade name: Asahi Organic Materials Co., Ltd.
- bisphenol M trade name: Mitsui Chemicals Fine Co., Ltd.
- the method for adding an acryloyl group is not particularly limited and can be synthesized by an existing method.
- a dehydration esterification method using acrylic acid a transesterification method in which an ester is reacted to obtain a new ester
- a method using acrylic acid chloride a method using acrylic acid anhydride
- a method of adding an acrylate having an isocyanate group a method using acrylic acid chloride which is highly reactive and can be synthesized at low cost is desirable.
- Compound (A) may be a single compound or a mixture of two or more compounds.
- the content of the compound (A) is preferably 3 to 60% by weight, more preferably 5 to 40% by weight, based on the total amount of the ink.
- the content of the compound (A) is in the above range, yellowishness can be suppressed and a cured film having a high refractive index can be easily obtained.
- the compound (B) is an acrylate monomer represented by the following formula (7) or (8).
- R 20 and R 23 are each independently a divalent hydrocarbon group having 1 to 10 carbon atoms
- R 21 , R 22 and R 24 are independently hydrogen or a methyl group
- k, l and m are It is an integer of 1 to 5 independently.
- Specific examples of the compound (B) include m-phenoxybenzyl (meth) acrylate, o-phenylphenol EO-modified (meth) acrylate, and paracumylphenol EO-modified (meth) acrylate.
- Compound (B) may be a single compound or a mixture of two or more compounds.
- the content of the compound (B) is preferably 1 to 60% by weight, more preferably 5 to 40% by weight, based on the total amount of the ink.
- the ink has a low viscosity, and it is easy to increase the refractive index of the ink cured film.
- the photopolymerization initiator (C) is not particularly limited as long as it is a compound that generates radicals or acids upon irradiation with ultraviolet rays or visible rays, but is not limited to acylphosphine oxide-based initiators, oxyphenylacetate-based initiators, and benzoylformic acid-based initiators. Initiators and hydroxyphenyl ketone-based initiators are preferred. Among these, acyl phosphine oxide-based initiators, oxyphenyl acetate-based initiators and benzoylformic acid-based initiators are particularly suitable for ink photocuring properties and cured films obtained. It is more preferable from the viewpoint of the light transmittance.
- photopolymerization initiator (C) examples include benzophenone, Michler's ketone, 4,4′-bis (diethylamino) benzophenone, xanthone, thioxanthone, isopropyl xanthone, 2,4-diethylthioxanthone, 2-ethylanthraquinone, acetophenone, 2 -Hydroxy-2-methyl-4'-isopropylpropiophenone, isopropyl benzoin ether, isobutyl benzoin ether, 2,2-diethoxyacetophenone, 2,2-dimethoxy-2-phenylacetophenone, camphorquinone, benzanthrone, 4- Ethyl dimethylaminobenzoate, isoamyl 4-dimethylaminobenzoate, 4,4′-di (t-butylperoxycarbonyl) benzophenone, 3,4,4′-tri (t-butylperoxy
- C Commercially available photopolymerization initiators (C) include Irgacure 184, Irgacure 651, Irgacure 127, Irgacure 1173, Irgacure 500, Irgacure 2959, Irgacure 754, Irgacure MBF, Irgacure TPO (trade names such as IrgacureBAS Japan).
- Irgacure 754, Irgacure MBF, and Irgacure TPO are more preferable because the light transmittance of the obtained cured film or the like becomes the highest.
- the photopolymerization initiator (C) used in the ink of the present invention may be a single compound or a mixture of two or more compounds.
- the content of the photopolymerization initiator (C) is preferably 1 to 15% by weight or more of the total amount of the ink, and 1 to 1 to the total amount of the ink in consideration of balance with other materials. It is more preferably 10% by weight or more, and more preferably 1 to 8% by weight of the total amount of the ink in that it is easy to obtain a cured film having excellent light curability against ultraviolet rays and high light transmittance. . 1.4.
- Solvent (D) The ink of the present invention may contain a solvent (D) such as an organic solvent for the purpose of adjusting ink jet discharge properties. The use of the solvent (D) is preferable because the viscosity and surface tension of the ink can be finely adjusted and the ink jetting properties can be adjusted.
- the solvent (D) is not particularly limited, but is preferably an organic solvent having a boiling point of 100 ° C to 300 ° C.
- organic solvent having a boiling point of 100 to 300 ° C. examples include butyl acetate, isobutyl acetate, butyl propionate, methyl methoxyacetate, ethyl methoxyacetate, butyl methoxyacetate, methyl ethoxyacetate, ethyl ethoxyacetate, 3-methoxypropion Methyl acetate, ethyl 3-methoxypropionate, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, methyl pyruvate, ethyl pyruvate, propyl pyruvate, methyl acetoacetate, ethyl acetoacetate, methyl 2-hydroxyisobutyrate I-propyl 2-hydroxyisobutyrate, methyl lactate, propyl lactate, dioxane, 3-methoxybutanol, 3-methoxybutyl acetate, propylene glycol monomethyl
- the solvent (D) used in the ink of the present invention may be a single compound or a mixture of two or more compounds.
- the content of the solvent (D) is preferably 30 to 85% by weight, more preferably 40 to 80% by weight, and still more preferably 50 to 75% by weight with respect to the total weight of the ink.
- photocurability is improved.
- the ink of the present invention may contain a (meth) acrylate monomer (E) other than the compound (A) and the compound (B) for the purpose of adjusting ink jet discharge properties.
- the viscosity and surface tension of the ink can be finely adjusted, and the ink jetting property can be adjusted.
- the (meth) acrylate monomer (E) is not particularly limited, but the viscosity at 25 ° C. is preferably 0.1 to 70 mPa ⁇ s, more preferably 0.1 to 50 mPa ⁇ s.
- (meth) acrylate monomer (E) examples include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 1,4-cyclohexanedimethanol mono ( (Meth) acrylate, N-hydroxyethyl (meth) acrylamide, glycidyl (meth) acrylate, 3,4-epoxycyclohexyl (meth) acrylate, methyl glycidyl (meth) acrylate, 3-methyl-3- (meth) acryloxymethyl oxetane 3-ethyl-3- (meth) acryloxymethyl oxetane, 3-methyl-3- (meth) acryloxyethyl oxetane, 3-ethyl-3- (meth) acryloxyethyl oxetane, 2-phenyl-3- ( (Meth) acryloxymethyl Xetan
- (Meth) acrylate monomer (E) is cyclohexyl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, isobornyl (meth) acrylate, dicyclopentanyl (meth) acrylate, tricyclodecane dimethanol di (meth) acrylate, 1,4-cyclohexanedimethanol di (meth) acrylate, ⁇ -butyrolactone (meth) acrylate, n-butyl (meth) acrylate, t-butyl (meth) acrylate, lauryl (meth) acrylate, 2-hydroxyethyl (meth) Acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, methoxyethyl (meth) acrylate, ethoxyethyl (meth) acrylate, methoxybutyl (meth) acrylate And at least one
- (Meth) acrylate monomer (E) may be a single compound or a mixture of two or more compounds.
- the content of the (meth) acrylate monomer (E) is preferably 1 to 80% by weight, more preferably 1 to 70% by weight, still more preferably 1 to 60% by weight based on the total weight of the ink. %.
- the refractive index can be adjusted within a range that does not impair the high light transmittance of the cured film obtained from the ink.
- Surfactant (F) When the ink of the present invention contains the surfactant (F), the surface of the resulting cured film has high liquid repellency, and a microlens with a fine pattern size can be formed on the cured film.
- the surfactant (F) include Polyflow No. 45, Polyflow KL-245, Polyflow No. 75, Polyflow No. 90, polyflow no. 95 (trade name, Kyoeisha Chemical Industry Co., Ltd.), Disperbyk 161, Disper Bake 162, Disper Bake 163, Disper Bake 164, Disper Bake 166, Disper Bake 170, Disper Bake 180, Disper Bake 181 and Disper Bake 182, BYK300, BYK306, BYK310, BYK320, BYK330, BYK342, BYK344, BYK346 (trade name, Big Chemie Japan Co., Ltd.), KP-341, KP-358, KP-368, KF-96-50CS, KF-50 -100CS (trade name, Shin-Etsu Chemical Co., Ltd.), Surflon SC-101, Surflon KH-40 (trade name, Seimi Chemical Co., Ltd.), Aftergent 222F, Aftergent 25 , FTX-218 (trade name, Neos), Neo
- the surfactant (F) is a surfactant having a reactive group
- the surfactant is less likely to bleed out from the formed cured film or the like, and the lens diameter of the microlens formed on the cured film It is more preferable because the variation becomes smaller.
- the reactive group is preferably at least one group selected from the group consisting of a (meth) acryloyl group, an oxirane group and an oxetanyl group from the viewpoint of obtaining a highly curable ink.
- the surfactant having a (meth) acryloyl group as a reactive group include RS-72K (trade name, DIC Corporation), BYK UV 3500, BYK UV 3570 (trade name, Big Chemie Japan Co., Ltd.). ), TEGO Rad 2200N, TEGO Rad 2250, TEGO Rad 2300 and TEGO Rad 2500 (trade name, Evonik Degussa Japan Co., Ltd.).
- examples of the surfactant having an oxirane group as a reactive group include RS-211K (trade name, DIC Corporation).
- the surfactant (F) used in the ink of the present invention may be a single compound or a mixture of two or more compounds.
- the content of the surfactant (F) is preferably 0.1 to 1% by weight, more preferably 0.1 to 0.9% by weight, and still more preferably based on the total weight of the ink. 0.1 to 0.8% by weight.
- the content of the surfactant (F) is in the above range, the photocurability of the ink and the liquid repellency of the resulting cured film surface are excellent.
- the ink of the present invention may contain an ultraviolet absorber in order to prevent the obtained cured film and the like from being deteriorated by light such as a backlight.
- the ultraviolet absorber examples include 2- (5-methyl-2-hydroxyphenyl) benzotriazole, 2- (3,5-di-t-butyl-2-hydroxyphenyl) benzotriazole, 2- (3 Benzotriazole compounds such as 5-di-t-butyl-2-hydroxyphenyl) -5-chlorobenzotriazole and 2- (3,5-di-t-amyl-2-hydroxyphenyl) benzotriazole, 2- (4 , 6-diphenyl-1,3,5-triazin-2-yl) -5-[(hexyl) oxy] -phenol and the like, benzophenone compounds such as 2-hydroxy-4-n-octyloxybenzophenone, and An oxalic acid anilide compound such as 2-ethoxy-2'-ethyloxalic acid bisanilide is exemplified.
- the ultraviolet absorber used in the ink of the present invention may be a single compound or a mixture of two or more compounds.
- Antioxidant The inkjet ink of the present invention may contain an antioxidant in order to prevent oxidation of the resulting cured film or the like.
- antioxidants include pentaerythritol tetrakis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate, triethylene glycol-bis- [3- (3-t-butyl-5 -Methyl-4-hydroxyphenyl) propionate], 1,6-hexanediol-bis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate], octadecyl-3- (3,5- Hindered phenol compounds such as di-t-butyl-4-hydroxyphenyl) propionate, 3,5-di-t-butyl-4-hydroxybenzylphosphonate diethyl ester, and amine compounds such as n-butylamine, triethylamine and diethylaminomethyl methacrylate Is mentioned.
- the antioxidant used in the ink of the present invention may be a single compound or a mixture of two or more compounds.
- Polymerization inhibitor The ink of the present invention may contain a polymerization inhibitor in order to improve storage stability. Specific examples of the polymerization inhibitor include 4-methoxyphenol, hydroquinone and phenothiazine. Among these, phenothiazine is preferable because an ink with a small increase in viscosity can be obtained even in long-term storage.
- the polymerization inhibitor used in the ink of the present invention may be a single compound or a mixture of two or more compounds. 1.10.
- Thermosetting compound The ink of the present invention is thermoset to improve strength within a range that does not affect the light transmittance and refractive index of the cured film obtained from the ink, or to improve adhesion to the substrate. It may contain a sex compound.
- the thermosetting compound is not particularly limited as long as it is a compound having a functional group that can be thermally cured. Epoxy compound, epoxy curing agent, bismaleimide, phenol resin, resin containing phenolic hydroxyl group, melamine Examples thereof include resins and silane coupling agents.
- thermosetting compound may be a single compound or a mixture of two or more compounds.
- the content of the thermosetting compound is preferably 1 to 10% by weight, more preferably 1 to 8% by weight, and further preferably 1 to 6% by weight with respect to the total weight of the ink.
- the content of the thermosetting compound is within the above range, a cured film with higher strength can be obtained.
- Epoxy compound When the ink of the present invention contains an epoxy compound, the strength of a cured film or the like obtained from the ink can be improved.
- the epoxy compound is not particularly limited as long as it is a compound having a structure represented by the following formula (9-1) or formula (9-2) in one molecule.
- the epoxy compound examples include novolak type (phenol novolak type and cresol novolak type), bisphenol A type, bisphenol F type, trisphenol methane type, hydrogenated bisphenol A type, hydrogenated bisphenol F type, bisphenol S type, and tetrapheny.
- an epoxy resin produced by a known method may be used, or a commercially available product may be used.
- Examples of commercially available products include jER828, 834, 1001, and 1004 (all trade names: Mitsubishi Chemical Corporation), Epicron 840, 850, 1050, 1050, and 2055 (all trade names: DIC ( Epototo YD-011, YD-013, YD-127, YD-128 (all trade names: Nippon Steel Chemical Co., Ltd.), D.E.R.317, 331, 661, 664 (both trade names: Dow Chemical Japan Co., Ltd.), Araldite 6071, 6084, GY250, GY260 (both trade names: Huntsman Japan Co., Ltd.), Sumi-epoxy ESA-011 ESA-014, ELA-115, ELA-128 (all trade names: Sumitomo Chemical Co., Ltd.), A.E.R.
- jER828, 834, 1001, and 1004 all trade names: Mitsubishi Chemical Corporation
- TECHMORE VG3101L trade name: Printec Co., Ltd.
- EPPN-501 and EPPN-502 all When a product name: Nippon Kayaku Co., Ltd. is used, a cured film obtained from the ink is preferable because it has high strength.
- the epoxy resin that can be used in the ink of the present invention may be one type or two or more types.
- (2) Epoxy curing agent When the ink of the present invention contains an epoxy curing agent, the strength of the resulting cured film can be further improved.
- an epoxy curing agent an acid anhydride curing agent and a polyamine curing agent are preferable.
- Acid anhydride curing agents include maleic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methylhexahydrophthalic anhydride, hexahydrotrimellitic anhydride, phthalic anhydride, trimellit Examples thereof include acid anhydrides and styrene-maleic anhydride copolymers.
- polyamine curing agents examples include diethylenetriamine, triethylenetetramine, tetraethylenepentamine, dicyandiamide, polyamidoamine (polyamide resin), ketimine compound, isophoronediamine, m-xylenediamine, m-phenylenediamine, 1,3-bis (amino).
- Methyl) cyclohexane N-aminoethylpiperazine, 4,4′-diaminodiphenylmethane, 4,4′-diamino-3,3′-diethyldiphenylmethane, and diaminodiphenylsulfone.
- the epoxy curing agent that can be used in the ink of the present invention may be a single compound or a mixture of two or more compounds.
- the ink of the present invention contains a bismaleimide compound
- the strength of the resulting cured film can be further improved.
- limit especially as a bismaleimide compound for example, the compound represented by following formula (10) is preferable.
- the bismaleimide compound represented by the following formula (10) can be obtained, for example, by reacting a diamine with an acid anhydride.
- R 25 and R 27 are each independently hydrogen or methyl, and R 26 is a divalent group represented by the following formula (11).
- R 28 and R 29 are each independently an alkylene having 1 to 18 carbon atoms or a substituent that may be substituted for any arbitrary methylene that is not continuous (not adjacent) with oxygen. It is a divalent group having a good aromatic ring, or an optionally substituted cycloalkylene. Examples of the substituent include carboxyl, hydroxy, alkyl having 1 to 5 carbons, and alkoxy having 1 to 5 carbons.
- R 28 and R 29 are each independently a divalent group selected from the following group (12) in that a cured film having high heat resistance can be obtained.
- Y is one divalent group selected from the following group (13).
- the bismaleimide may be one kind or a mixture of two or more kinds.
- Phenolic resin or resin containing a phenolic hydroxyl group When the ink of the present invention contains a phenol resin or a resin containing a phenolic hydroxyl group, the strength of the resulting cured film can be further improved.
- the phenol resin a novolak resin obtained by a condensation reaction between an aromatic compound having a phenolic hydroxyl group and an aldehyde is preferably used.
- the resin containing a phenolic hydroxyl group a vinylphenol homopolymer (hydrogenated product) is used. And vinylphenol copolymers (including hydrogenated products) of vinylphenol and a compound copolymerizable therewith are preferably used.
- aromatic compounds having a phenolic hydroxyl group include phenol, o-cresol, m-cresol, p-cresol, o-ethylphenol, m-ethylphenol, p-ethylphenol, o-butylphenol, m-butylphenol.
- P-butylphenol o-xylenol, 2,3-xylenol, 2,4-xylenol, 2,5-xylenol, 3,4-xylenol, 3,5-xylenol, 2,3,5-trimethylphenol, 3, 4,5-trimethylphenol, p-phenylphenol, resorcinol, hydroquinone, hydroquinone monomethyl ether, pyrogallol, bisphenol A, bisphenol F, diphenol containing terpene skeleton, gallic acid, gallic ester, ⁇ -naphthol and ⁇ -naphth Thor.
- aldehydes include formaldehyde, paraformaldehyde, furfural, benzaldehyde, nitrobenzaldehyde and acetaldehyde.
- the compound copolymerizable with vinylphenol include (meth) acrylic acid or a derivative thereof, styrene or a derivative thereof, maleic anhydride, vinyl acetate, and acrylonitrile.
- phenolic resins include Resitop PSM-6200 (trade name; Gunei Chemical Co., Ltd.), Shonor BRG-555 (trade name; Showa Denko Co., Ltd.), and resins containing phenolic hydroxyl groups.
- Resitop PSM-6200 trade name; Gunei Chemical Co., Ltd.
- Shonor BRG-555 trade name; Showa Denko Co., Ltd.
- resins containing phenolic hydroxyl groups resins containing phenolic hydroxyl groups.
- Specific examples include Marca Linker M S-2G, Marca Linker CST70, and Marca Linker PHM-C (all trade names: Maruzen Petrochemical Co., Ltd.).
- the phenol resin used in the ink of the present invention or the resin containing a phenolic hydroxyl group may be a single compound or a mixture of two or more compounds.
- the melamine resin is not particularly limited as long as it is a resin produced by polycondensation of melamine and formaldehyde, and examples thereof include condensates such as methylol melamine, etherified methylol melamine, benzoguanamine, methylol benzoguanamine, and etherified methylol benzoguanamine. .
- a condensate of etherified methylol melamine is preferable in that the resulting cured film has good chemical resistance.
- melamine resin examples include Nicalac MW-30, MW-30HM, MW-390, MW-100LM, and MX-750LM (trade names, Sanwa Chemical Co., Ltd.).
- the melamine resin that can be used in the ink of the present invention may be a single compound or a mixture of two or more compounds.
- Silane coupling agent When the ink of the present invention contains a silane coupling agent, the adhesion of the resulting cured film to the substrate can be improved.
- the silane coupling agent include 3-acryloxypropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, 3- Mention may be made of aminopropyltrimethoxysilane and 3-mercaptopropyltrimethoxysilane.
- 3-acryloxypropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane and 3-glycidoxypropyltriethoxysilane have a polymerizable reactive group. This is preferable because it can be copolymerized with other components.
- the silane coupling agent that can be used in the ink of the present invention may be a single compound or a mixture of two or more compounds.
- Thermal polymerization initiator The ink of the present invention may contain a thermal polymerization initiator in order to improve the curability of the ink by the heating step.
- Specific examples of the thermal polymerization initiator include 2,2′-azobisisobutyronitrile, 2,2′-azobis (2,4-dimethylvaleronitrile), benzoyl peroxide and di-t-butyl peroxide. Can be mentioned. Among these, 2,2′-azobisisobutyronitrile and 2,2′-azobis (2,4-dimethylvaleronitrile) are preferable.
- the thermal polymerization initiator that can be used in the ink of the present invention may be a single compound or a mixture of two or more compounds.
- 1.12. Ink Viscosity The viscosity of the ink of the present invention at 25 ° C. measured with an E-type viscometer is preferably 1.0 to 30 mPa ⁇ s. When the viscosity is within this range, when the ink of the present invention is applied by the ink jet method, the ejection property by the ink jet apparatus becomes good.
- the viscosity of the ink of the present invention at 25 ° C. is more preferably 2.0 to 25 mPa ⁇ s, and still more preferably 4.0 to 20 mPa ⁇ s. 1.13.
- Ink Preparation Method The ink of the present invention can be prepared by mixing each component as a raw material by a known method.
- the ink of the present invention comprises the component (A) and, if necessary, the component (B), the component (C), the component (D), the component (E), the component (F), an ultraviolet absorber, and an antioxidant.
- a polymerization inhibitor, a thermosetting compound, a thermal polymerization initiator, and the like are mixed, and the resulting solution is prepared by, for example, filtering and degassing using a membrane filter made of ultra high molecular weight polyethylene (UPE). It is preferable.
- UPE ultra high molecular weight polyethylene
- Ink Storage When the ink of the present invention is stored at 5 to 30 ° C., the increase in viscosity during storage is small and the storage stability is good. 1.15.
- Application of Ink by Inkjet Method The ink of the present invention can be applied using a known inkjet method. Examples of the ink jet method include a piezo method in which mechanical energy is applied to ink to eject the ink from the ink jet head, and a thermal method in which thermal energy is applied to the ink to eject ink.
- Examples of the inkjet head include those having a heat generating portion made of metal and / or metal oxide.
- Specific examples of the metal and / or metal oxide include metals such as Ta, Zr, Ti, Ni, and Al, and oxides of these metals.
- a coating device used when coating using the ink of the present invention for example, energy corresponding to a coating signal is given to ink in an ink jet head having an ink storage portion in which ink is stored, and An apparatus that performs application (drawing) corresponding to the application signal while generating ink droplets can be used.
- the ink jet coating apparatus is not limited to the one in which the ink jet head and the ink containing portion are separated, and may be one in which they are inseparably integrated.
- the ink storage unit may be integrated with the ink jet head so as to be separable or non-separable and mounted on the carriage, or may be provided at a fixed portion of the apparatus. In the latter case, ink may be supplied to the ink jet head via an ink supply member, for example, a tube.
- the ink jet head may be heated, and the heating temperature is preferably 80 ° C. or less, and more preferably 50 ° C. or less.
- the viscosity of the ink of the present invention at the heating temperature is preferably 1.0 to 30 mPa ⁇ s. 1.16.
- Use of ink The ink of the present invention is excellent in photocurability and can form a cured film having a high refractive index and high transparency. Therefore, a high refractive index substrate used in a backlight device or the like is used. It is used suitably for manufacture of the light guide plate etc. which were.
- the ink of the present invention can be used as an ink for forming a liquid repellent cured film and an ink for forming a microlens.
- the ink of the present invention is an ink for forming a liquid repellent cured film
- the ink contains a compound (A1) represented by any of the following formulas (15) and (16) and a surfactant (F). It is preferable to include.
- R 30 , R 31 and R 32 is a group selected from the following organic group d, and the remainder is a hydroxyl group or an alkyl group having 1 to 5 carbon atoms.
- R 33 , R 34 and R 35 is a group selected from the following organic group d, and the remainder is a hydroxyl group or an alkyl group having 1 to 5 carbon atoms.
- Organic group d At least one of R 33 , R 34 and R 35 is a group selected from the following organic group d, and the remainder is a hydroxyl group or an alkyl group having 1 to 5 carbon atoms.
- the compound (A1) is a part of the compound (A).
- the content of the compound (A1) is preferably 3 to 60% by weight, more preferably 5 to 40% by weight, still more preferably 5 to 30% by weight, and the content of the surfactant (F) is preferably 0.8. It is 1 to 1% by weight, more preferably 0.1 to 0.9% by weight, still more preferably 0.1 to 0.8% by weight.
- the content of the compound (A1) and the surfactant (F) is in the above range, yellowishness is suppressed, a high refractive index, and a liquid repellent cured film having excellent surface liquid repellency is obtained.
- Cheap is preferably 3 to 60% by weight, more preferably 5 to 40% by weight, still more preferably 5 to 30% by weight, and the content of the surfactant (F) is preferably 0.8. It is 1 to 1% by weight, more preferably 0.1 to 0.9% by weight, still more preferably 0.1 to 0.8% by weight.
- the compound (A1) is preferably a compound represented by any one of the above formulas (5) and (6), and more preferably a compound represented by the formula (5).
- the ink further contains a photopolymerization initiator (C) in addition to the compound (A1) and the surfactant (F). Is preferred.
- the photopolymerization initiator (C) is as described above.
- the ink in addition to the compound (A1) and the surfactant (F), the ink further contains a solvent (D) from the viewpoint of yellowing reduction and inkjet discharge properties.
- a solvent (D) from the viewpoint of yellowing reduction and inkjet discharge properties.
- (meth) acrylate monomer (G) other than compound (A1) is preferably included.
- the solvent (D) is as described above. Specific examples and contents of the (meth) acrylate monomer (G) are the same as those of the (meth) acrylate monomer (E).
- the ink of the present invention is a microlens-forming ink
- the ink comprises at least three benzene rings and at least one group selected from the following organic group a, and all the bonds between the benzene rings are one.
- the compound (A2) having a skeletal structure formed through the group and at least one group selected from the following organic group d bonded to the benzene ring is represented by the following formula (7) or (8): It is preferable that the compound (B) is included.
- R 1 , R 2 and R 3 are each independently hydrogen or an alkyl group having 1 to 5 carbon atoms, and * represents the bonding position of the benzene ring.)
- R 1 , R 2 and R 3 are each independently hydrogen or an alkyl group having 1 to 5 carbon atoms, and * represents the bonding position of the benzene ring.
- R 7 is independently a divalent hydrocarbon group having 1 to 10 carbon atoms
- R 6 and R 8 are independently hydrogen or a methyl group
- i is an integer of 1 to 5
- n is (It is an integer from 0 to 5.)
- R 20 and R 23 are each independently a divalent hydrocarbon group having 1 to 10 carbon atoms, R 21 , R 2 and R 24 are independently hydrogen or a methyl group, and k, l and m are It is an integer of 1 to 5 independently.
- the compound (A2) is a part of the compound (A).
- the content of the compound (A2) is preferably 3 to 60% by weight, more preferably 5 to 40% by weight, and the content of the compound (B) is preferably 1 to 60% by weight, more preferably 5 to 40% by weight. %.
- the ink has a low viscosity, yellowness is suppressed, a high refractive index, and a high refractive index microlens is easily obtained.
- the compound (A2) is preferably a compound represented by any one of the above formulas (1) to (3), and more preferably a compound represented by any one of the above formulas (4) to (6). Is preferable, and a compound represented by Formula (5) is more preferable.
- the compound (B) is preferably m-phenoxybenzyl (meth) acrylate, o-phenylphenol EO-modified (meth) acrylate or paracumylphenol EO-modified (meth) acrylate.
- the ink further contains a photopolymerization initiator (C) in addition to the compound (A2) and the compound (B) from the viewpoint of curability.
- the photopolymerization initiator (C) is as described above.
- the ink in addition to the compound (A2) and the compound (B), the ink further includes a solvent (D) or a compound (A2) from the viewpoint of yellowing reduction and inkjet discharge properties.
- the solvent (D) is as described above. Specific examples and contents of the (meth) acrylate monomer (H) are the same as those of the (meth) acrylate monomer (E). 2. Cured film, etc.
- the liquid repellent cured film and microlens of the present invention can be obtained by curing the ink of the present invention described above.
- a liquid-repellent cured film or microlens obtained by applying the ink of the present invention described above by an ink jet method and then curing the ink by irradiating it with light such as ultraviolet rays or visible light is preferable.
- the light transmittance at a wavelength of 400 nm is preferably 95% or more, more preferably 97% or more.
- the liquid repellent cured film and microlens obtained from the ink of the present invention preferably have a refractive index of 1.55 or more, more preferably 1.55 to 1.65, and still more preferably 1.56 to 1.60. is there.
- the refractive index of the liquid repellent cured film and the microlens is a value measured using a refractive index measuring apparatus FE-3000 (trade name: Otsuka Electronics Co., Ltd.), and the wavelength of the cured film is 400 nm.
- the light transmittance at is a value measured using a transmittance measuring device V-670 (trade name: JASCO Corporation).
- the amount of light (exposure amount) when irradiating the ink of the present invention with ultraviolet rays or visible light depends on the composition of the ink of the present invention, but the photoreceiver UVD-365PD manufactured by USHIO INC. Is used. as measured with integrating actinometer UIT-201 attached, preferably 100 ⁇ 5,000mJ / cm 2, more preferably 300 ⁇ 4,000mJ / cm 2, more preferably 500 ⁇ 3,000mJ / cm 2. Further, the wavelength of ultraviolet rays or visible rays to be irradiated is preferably 200 to 500 nm, and more preferably 250 to 450 nm.
- the exposure amount described below is a value measured by an integrated light meter UIT-201 equipped with a photoreceiver UVD-365PD manufactured by USHIO INC.
- an electrodeless lamp, a low-pressure mercury lamp, a high-pressure mercury lamp, an ultra-high pressure mercury lamp, a metal halide lamp, a halogen lamp, etc. are mounted, and an apparatus that irradiates ultraviolet rays, visible rays, etc. in the range of 200 to 500 nm. If it does not specifically limit.
- the lens diameter of the microlens is not particularly limited, but is usually preferably 10 to 100 ⁇ m, and more preferably 20 to 60 ⁇ m. Also, the lens height is not particularly limited, but is usually preferably 0.5 to 20 ⁇ m, and more preferably 2 to 15 ⁇ m. 3. Laminated body
- the liquid-repellent cured film obtained from the ink of the present invention is formed on a substrate and constitutes a laminated body of the substrate and the cured film.
- the microlens obtained from the ink of the present invention is formed on a cured film, and constitutes a laminate of a cured film and a microlens or a laminate of a substrate, a cured film and a microlens.
- a liquid repellent cured film having a refractive index of 1.55 or more with respect to light with a wavelength of 589 nm is formed on a substrate having a refractive index with respect to light of wavelength 589 nm of 1.55 or more.
- Examples include a laminate in which a microlens obtained from the ink of the present invention is formed on the liquid repellent cured film.
- the microlens obtained from the ink of the present invention is formed on the liquid repellent cured film obtained from the ink of the present invention, and constitutes a laminate of the substrate, the cured film and the microlens.
- a liquid repellent cured film obtained from the ink of the present invention is formed on a substrate, and the ink of the present invention is formed on the cured film.
- Substrate The substrate is not particularly limited as long as it can be an object to which ink is applied, and the shape is not limited to a flat plate shape, and may be a curved surface shape.
- the substrate is not particularly limited.
- a polyester resin substrate made of polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), a polyolefin resin substrate made of polyethylene and polypropylene, a polyvinyl chloride resin substrate, Examples thereof include a fluorine resin substrate, a PMMA substrate, a PC substrate, a PS substrate, an MS substrate, an organic polymer film made of polyamide, polycarbonate, polyimide, and the like, a substrate made of cellophane, and a glass substrate.
- a substrate having a refractive index of 1.55 or more, more preferably 1.55-1.65 such as a PC substrate, PS substrate, MS substrate, etc.
- the liquid repellent obtained from the substrate and the ink of the present invention is preferable because the difference in refractive index at the interface with the heat-curable film is small.
- the thickness of the substrate is not particularly limited, but is usually 10 ⁇ m to 10 mm, and is appropriately adjusted depending on the purpose of use.
- a liquid repellent cured film obtained from the ink of the present invention is formed on a substrate having a refractive index of 1.55 or more, more preferably 1.55 to 1.65, and the cured A laminate in which a microlens obtained from the ink of the present invention having a refractive index of 1.55 or more, more preferably 1.55 to 1.65 is formed on the film is preferable.
- the cured film can have a refractive index of 1.55 or more, the interface between the substrate and the liquid repellent cured film and between the liquid repellent cured film and the microlens. Since the difference in refractive index at the interface can be reduced, reflection of light incident on the light guide plate at each interface can be suppressed, and light can be extracted efficiently. 4).
- Optical component The optical component of the present invention is not particularly limited as long as the cured product obtained from the ink of the present invention is formed, but it is the light guide plate from the viewpoint of light extraction efficiency and luminance. preferable. 5.
- Video display device The video display device of the present invention includes the optical component. For this reason, it can be suitably used for a video display device having excellent display characteristics such as a liquid crystal display.
- reaction temperature was raised to 50 ° C. and stirred for 3 hours, and then the temperature was lowered to stop the reaction.
- the reaction solution was allowed to cool to room temperature, and unreacted acrylic acid chloride was quenched with ice water. afterwards. Liquid separation was carried out using a saturated aqueous sodium hydrogen carbonate solution to remove acrylic acid, which is a decomposition product of acrylic acid chloride. Subsequently, THF was removed by an evaporator to obtain 17.01 g of a trifunctional acrylate compound (acrylate A-2) represented by the formula (5).
- reaction temperature was raised to 50 ° C. and stirred for 3 hours, and the temperature was lowered to stop the reaction.
- the reaction solution was allowed to cool to room temperature, and unreacted acrylic acid chloride was quenched with ice water. afterwards.
- Liquid separation was carried out using a saturated aqueous sodium hydrogen carbonate solution to remove acrylic acid, which is a decomposition product of acrylic acid chloride.
- THF was removed by an evaporator to obtain 18.71 g of a trifunctional acrylate compound (acrylate A-3) represented by the formula (6).
- reaction solution was allowed to cool to room temperature, and then separated with a saturated aqueous sodium hydrogen carbonate solution, and the organic layer was extracted. Subsequently, THF was removed by an evaporator to obtain 23.51 g of a trifunctional acrylate compound (acrylate A-4) represented by the following structure.
- Example 1 Preparation of Lens Ink 1 As compound (A2), acrylate A-1 produced in Production Example 1 above, and as compound (B), POB-A (trade name: Kyoeisha) which is m-phenoxybenzyl acrylate Chemical Co.) and photopolymerization initiator (C) as oxy-phenyl-acetic acid 2- [2-oxo-2-phenyl-acetoxy-ethoxy] -ethyl ester and oxy-phenyl-acetic acid 2- [2- IRGACURE754 (trade name: BASF, hereinafter abbreviated as “Ir754”) which is a mixture with hydroxy-ethoxy] -ethyl ester and (meth) acrylic monomer (E) as light acrylate THF-A which is tetrahydrofurfuryl acrylate (Trade name: Kyoeisha Chemical Co., Ltd., hereinafter abbreviated as “THF-A”) in the following composition ratio. Filtered through a
- the lens inks 1 to 10 obtained in the respective examples and comparative examples are respectively injected into an ink jet cartridge, and this is mounted on an ink jet apparatus (DMP-2831 (trade name) of FUJIFILM Dimatix Inc.), and an ejection voltage (piezo) (Voltage) 20V, the head temperature is appropriately adjusted according to the viscosity of the ink or the composition, the printing resolution is set to 512 dpi under the discharge condition of the driving frequency 5 kHz and the number of times of application, and the central portion of the 4 cm square glass substrate. Lens ink was applied in a 3 cm square pattern.
- a pattern can be formed, and there is no pattern distortion or faint printing.
- B A pattern can be formed, but there is a lot of pattern disturbance or printing faint.
- C A pattern cannot be formed.
- Cannot dispense) evaluation of photocurability
- the refractive index of the cured film pattern was measured using a refractive index measuring apparatus FE-3000 (trade name: Otsuka Electronics Co., Ltd.).
- the light transmittance and yellowness were measured using a transmittance measuring device V-670 (JEOL Ltd.).
- a cured film having a b * value of 0.30 or more was judged to be yellowish.
- a liquid repellent cured film is required.
- a surface treating agent for forming a liquid repellent cured film on a glass substrate was prepared.
- EA-0200 which is an acrylate having a fluorene skeleton, photopolymerization agent Ir754, methyl 2-hydroxyisobutyrate as an organic solvent (Mitsubishi Gas Chemical Co., Ltd., hereinafter abbreviated as “HBM”), tetrahydrofurfuryl acrylate A certain THF-A and Tegorad 2200N (trade name: Evonik Degussa Japan Co., Ltd.) having an acryloyl group as a surfactant are mixed in the following composition ratio, and filtered through a PTFE membrane filter (0.2 ⁇ m). (Hereinafter, this filtrate is referred to as surface treatment agent A).
- the glass substrate was replaced with a PC substrate, the surface treatment agent A was applied under the same conditions as in the inkjet discharge method except that the discharge voltage (piezo voltage) was changed to 18 V and the head temperature was changed to 28 ° C., and photocured.
- lens inks 1 to 10 were applied in a dot pattern under the same conditions as in the ink jet ejection method to form microlenses, respectively.
- shape of the microlens (dot pattern) obtained as described above was observed using an optical microscope BX51 (trade name: OLYMPUS Co., Ltd.), the microlens obtained in any of the above combinations was observed. The shape was almost a perfect circle. Ideally, the lens observed from directly above the microlens is circular.
- the inks (lens inks 1 to 5) obtained in Examples 1 to 5 are excellent in ink jet discharge property and photocurability, and the cured product has high properties. Since it has a refractive index and high transparency, a yellowish color is suppressed, and a microlens having a better shape can be formed, it is suitably used as a photocurable inkjet ink.
- the lens inks 6 and 7 have high yellowness after photocuring and are not suitable as photocurable inkjet inks. Further, the lens inks 8, 9 and 10 have low yellowness after photocuring but have a low refractive index, and the lens ink 10 is inferior in terms of photocuring properties.
- the lens inks 1 to 5 obtained in Examples 1 to 5 according to the present invention are industrially effective because they have optimum characteristics as photo-curable ink-jet inks.
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Abstract
Description
[1]少なくとも3つのベンゼン環および下記有機基群aから選ばれる少なくとも1つの基からなり、前記ベンゼン環同士の結合はすべて1つの前記基を介してなされている骨格構造と、前記ベンゼン環に結合する下記有機基群dから選ばれる少なくとも1つの基とを有する化合物(A2)3~60重量%と下記式(7)または(8)で表される化合物(B)1~60重量%とを含む光硬化性インクジェットインク。
[有機基群a]
基であり、k、lおよびmは独立して1~5の整数である。)
[2]化合物(A2)が下記式(1)~(3)のいずれかで表される化合物である[1]に記載の光硬化性インクジェットインク。
[3]化合物(A2)が下記式(4)~(6)のいずれかで表される化合物である[1]に記載の光硬化性インクジェットインク。
[6]さらに、光重合開始剤(C)を含む[1]~[5]のいずれかに記載の光硬化性インクジェットインク。
[7]さらに、溶媒(D)、または化合物(A2)および化合物(B)以外の(メタ)アクリレートモノマー(H)を含む[1]~[6]のいずれかに記載の光硬化性インクジェットインク。
[8]さらに界面活性剤(F)を含む[1]~[7]のいずれかに記載の光硬化性インクジェットインク。
[9][1]~[8]のいずれかに記載の光硬化性インクジェットインクを光硬化させて得られるマイクロレンズ。
[10]撥液性硬化膜上に[9]に記載のマイクロレンズが形成されてなる積層体。
[11]波長589nmの光に対する屈折率が1.55以上である基板上に、波長589nmの光に対する屈折率が1.55以上の撥液性硬化膜が形成され、該撥液性硬化膜上に[9]に記載のマイクロレンズが形成されてなる積層体。
[12][10]または[11]に記載の積層体を有する光学部品。
[13][12]に記載の光学部品を含む映像表示装置。
1.光硬化性インクジェットインク
本発明の光硬化性インクジェットインク(以下「本発明のインク」ともいう。)は、少なくとも3つのベンゼン環および下記有機基群aから選ばれる少なくとも1つの基からなり、前記ベンゼン環同士の結合はすべて1つの前記基を介してなされている骨格構造と、前記ベンゼン環に結合する下記有機基群bから選ばれる少なくとも1つの基とを有する化合物(A)を含有する。
[有機基群a]
本発明のインクジェットインクは下記式(7)または(8)で表される化合物(B)、および光重合開始剤(C)をさらに含んでもよい。
本発明のインクは、粘度調整のため、溶媒(D)、または化合物(A)および化合物(B)以外の(メタ)アクリレートモノマー(E)を含んでもよい。また、表面張力の調整、または硬化膜に撥液性をもたせるために界面活性剤(F)を含んでもよい。また、必要に応じてラジカル重合性基含有化合物(G)、紫外線吸収剤、酸化防止剤、重合禁止剤および熱硬化性化合物などを含んでもよい。
1.1 化合物(A)
化合物(A)は、少なくとも3つのベンゼン環および下記有機基群aから選ばれる少なくとも1つの基からなり、前記ベンゼン環同士の結合はすべて1つの前記基を介してなされている骨格構造と、前記ベンゼン環に結合する下記有機基群bから選ばれる少なくとも1つの基とを有する化合物である。
[有機基群a]
前記骨格構造は、少なくとも3つのベンゼン環および下記有機基群aから選ばれる少なくとも1つの基からなる。すなわち、前記骨格構造はベンゼン環および有機基群aから選ばれる基以外の構造部位を含まない。なお、化合物(A)は前記骨格構造および下記有機基群bから選ばれる基以外の構造部位を含むことができ、たとえば前記骨格構造に含まれるベンゼン環に結合する水酸基、アルキル等の基を有していてもよい。
1.2.化合物(B)
化合物(B)は、下記式(7)または(8)で表せられるアクリレートモノマーである。
化合物(B)の具体例として、m-フェノキシベンジル(メタ)アクリレート、o-フェニルフェノールEO 変性(メタ)アクリレートおよびパラクミルフェノールEO 変性(メタ)アクリレートが挙げられる。
1.3.光重合開始剤(C)
光重合開始剤(C)は、紫外線または可視光線の照射によりラジカルまたは酸を発生する化合物であれば特に限定されないが、アシルフォスフィンオキサイド系開始剤、オキシフェニル酢酸エステル系開始剤、ベンゾイルギ酸系開始剤およびヒドロキシフェニルケトン系開始剤が好ましく、これらの中でも特にアシルフォスフィンオキサイド系開始剤,オキシフェニル酢酸エステル系開始剤およびベンゾイルギ酸系開始剤が、インクの光硬化性および得られる硬化膜等の光線透過率などの観点からより好ましい。
1.4.溶媒(D)
本発明のインクは、インクジェット吐出性を調整する目的で有機溶媒等の溶媒(D)を含有してもよい。溶媒(D)を用いると、インクの粘度や表面張力の微調整が可能であり、インクジェット吐出性を調整できるため好ましい。
1.5.化合物(A)および化合物(B)以外の(メタ)アクリレートモノマー(E)
本発明のインクは、インクジェット吐出性を調整する目的で化合物(A)および化合物(B)以外の(メタ)アクリレートモノマー(E)を含有してもよい。(メタ)アクリレートモノマー(E)を用いると、インクの粘度や表面張力の微調整が可能であり、インクジェット吐出性を調整できる。
1.6.界面活性剤(F)
本発明のインクが界面活性剤(F)を含有すると、得られる硬化膜の表面撥液性が高くなり、硬化膜上に微小でパターンサイズの制御されたマイクロレンズを形成することができる。
1.7.紫外線吸収剤
本発明のインクは、得られる硬化膜等がバックライトなどの光によって劣化することを防止するために、紫外線吸収剤を含有してもよい。
1.8.酸化防止剤
本発明のインクジェットインクは、得られる硬化膜等の酸化を防止するために、酸化防止剤を含有してもよい。
1.9.重合禁止剤
本発明のインクは、保存安定性を向上させるために重合禁止剤を含有してもよい。重合禁止剤の具体例としては、4-メトキシフェノール、ヒドロキノンおよびフェノチアジンが挙げられる。これらの中でもフェノチアジンを用いると、長期の保存においても粘度の増加が小さいインクが得られるため好ましい。
1.10.熱硬化性化合物
本発明のインクは、当該インクから得られる硬化膜の光線透過率と屈折率に影響を与えない範囲で強度を向上させるため、もしくは基板との密着性を向上させるために熱硬化性化合物を含んでもよい。前記熱硬化性化合物としては、熱硬化させることが可能な官能基を有する化合物であれば特に限定されず、エポキシ化合物、エポキシ硬化剤、ビスマレイミド、フェノール樹脂、フェノール性水酸基を含有する樹脂、メラミン樹脂およびシランカップリング剤などが挙げられる。
本発明のインクがエポキシ化合物を含有すると、当該インクより得られる硬化膜等の強度を向上させることができる。
jER152、154(いずれも商品名:三菱化学(株))、D.E.R.431、同438(いずれも商品名:ダウ・ケミカル日本(株))、エピクロンN-730、同N-770、同N-865(いずれも商品名:DIC(株))、エポトートYDCN-701、同YDCN-704(いずれも商品名:新日鐵化学(株))、アラルダイトECN1235、同ECN1273、同ECN1299(いずれも商品名:ハンツマン・ジャパン(株))、XPY307、EPPN-201、EOCN-1025、EOCN-1020、EOCN-104S、RE-306(いずれも商品名:日本化薬(株))、スミ-エポキシESCN-195X、同ESCN-220(いずれも商品名:住友化学工業(株))、A.E.R.ECN-235および同ECN-299(いずれも商品名:旭化成イーマテリアルズ(株))等のノボラック型エポキシ樹脂;
エピクロン830(商品名:DIC(株))、jER807(商品名:三菱化学(株))、エポトートYDF-170(商品名:新日鐵化学(株))、YDF-175、YDF-2001、YDF-2004およびアラルダイトXPY306(いずれも商品名:ハンツマン・ジャパン(株))等のビスフェノールF型エポキシ樹脂;
エポトートST-2004、同ST-2007および同ST-3000(いずれも商品名:新日鐵化学(株))等の水添ビスフェノールA型エポキシ樹脂;
セロキサイド2021P(商品名:(株)ダイセル)、アラルダイトCY175および同CY179(いずれも商品名:ハンツマン・ジャパン(株))等の脂環式エポキシ樹脂;
YL-6056、YX-4000、YL-6121(いずれも商品名:三菱化学(株))等のビキシレノール型もしくはビフェノール型エポキシ樹脂またはそれらの混合物;
EBPS-200(商品名:日本化薬(株))、EPX-30(商品名:(株)ADEKA)およびEXA-1514(商品名:DIC(株))等のビスフェノールS型エポキシ樹脂;
jER157S(商品名:三菱化学(株))等のビスフェノールAノボラック型エポキシ樹脂;
YL-931(商品名:三菱化学(株))およびアラルダイト163(商品名:ハンツマン・ジャパン(株))等のテトラフェニロールエタン型エポキシ樹脂;
アラルダイトPT810(商品名:ハンツマン・ジャパン(株))およびTEPIC(商品名:日産化学工業(株))等の複素環式エポキシ樹脂;
HP-4032、EXA-4750およびEXA-4700(いずれも商品名:DIC(株))等のナフタレン骨格を有するエポキシ樹脂;
HP-7200、HP-7200HおよびHP-7200HH(いずれも商品名:DIC(株))等のジシクロペンタジエン骨格を有するエポキシ樹脂;
テクモアVG3101L(商品名:三井化学(株))、YL-933(商品名:三菱化学(株))、EPPN-501およびEPPN-502(いずれも商品名:日本化薬(株))等のトリスフェノールメタン型エポキシ樹脂が挙げられる。
(2)エポキシ硬化剤
本発明のインクがエポキシ硬化剤を含んでいると、得られる硬化膜の強度をより向上させることができる。エポキシ硬化剤としては、酸無水物系硬化剤およびポリアミン系硬化剤などが好ましい。
本発明のインクがビスマレイミド化合物を含んでいると、得られる硬化膜の強度をより向上させることができる。ビスマレイミド化合物としては、特に制限されないが、例えば、下記式(10)で表される化合物が好ましい。下記式(10)で表されるビスマレイミド化合物は、例えばジアミンと酸無水物とを反応させて得ることができる。
(4)フェノール樹脂またはフェノール性水酸基を含有する樹脂
本発明のインクがフェノール樹脂またはフェノール性水酸基を含有する樹脂を含んでいると、得られる硬化膜の強度をより向上させることができる。フェノール樹脂としては、フェノール性水酸基を有する芳香族化合物とアルデヒド類との縮合反応により得られるノボラック樹脂が好ましく用いられ、フェノール性水酸基を含有する樹脂としては、ビニルフェノールの単独重合体(水素添加物を含む)、および、ビニルフェノールとこれと共重合可能な化合物とのビニルフェノール系共重合体(水素添加物を含む)などが好ましく用いられる。
本発明のインクがメラミン樹脂を含んでいると、得られる硬化膜の強度をより向上させることができる。メラミン樹脂は、メラミンとホルムアルデヒドとの重縮合により製造される樹脂であれば特に限定されず、メチロールメラミン、エーテル化メチロールメラミン、ベンゾグアナミン、メチロールベンゾグアナミン、およびエーテル化メチロールベンゾグアナミン等の縮合物などが挙げられる。これらの中でも、得られる硬化膜の耐薬品性が良好となる点で、エーテル化メチロールメラミンの縮合物が好ましい。
本発明のインクがシランカップリング剤を含有すると、得られる硬化膜の基板への密着性を向上させることができる。シランカップリング剤の具体例としては、3-アクリロキシプロピルトリメトキシシラン、3-メタクリロキシプロピルトリメトキシシラン、3-グリシドキシプロピルトリメトキシシラン、3-グリシドキシプロピルトリエトキシシラン、3-アミノプロピルトリメトキシシラン、および3-メルカプトプロピルトリメトキシシランを挙げることができる。これらの中でも3-アクリロキシプロピルトリメトキシシラン、3-メタクリロキシプロピルトリメトキシシラン、3-グリシドキシプロピルトリメトキシシランおよび3-グリシドキシプロピルトリエトキシシランは、重合性反応基を有しており他成分と共重合することができるので好ましい。
1.11.熱重合開始剤
本発明のインクは、加熱工程によりインクの硬化性を向上させるために熱重合開始剤を含んでもよい。熱重合開始剤の具体例としては、2,2'-アゾビスイソブチロニトリル、2,2'-アゾビス(2,4-ジメチルバレロニトリル)、過酸化ベンゾイルおよび過酸化ジ-t-ブチルが挙げられる。これらの中でも2,2'-アゾビスイソブチロニトリル、および2,2'-アゾビス(2,4-ジメチルバレロニトリル)が好ましい。
1.12.インクの粘度
本発明のインクの、E型粘度計で測定した25℃における粘度は1.0~30mPa・sであることが好ましい。粘度がこの範囲であると、本発明のインクをインクジェット法で塗布する場合に、インクジェット装置による吐出性が良好となる。25℃における本発明のインクの粘度は、より好ましくは2.0~25mPa・sであり、さらに好ましくは4.0~20mPa・sである。
1.13.インクの調製方法
本発明のインクは、原料となる各成分を公知の方法により混合することで調製することができる。
1.14.インクの保存
本発明のインクは、5~30℃で保存すると保存中の粘度増加が小さく、保存安定性が良好となる。
1.15.インクジェット法によるインクの塗布
本発明のインクは、公知のインクジェット法を用いて塗布することができる。インクジェット法としては、例えば、インクに力学的エネルギーを作用させてインクをインクジェットヘッドから吐出させるピエゾ方式、およびインクに熱エネルギーを作用させてインクを吐出させるサーマル方式が挙げられる。
1.16.インクの用途
本発明のインクは、光硬化性に優れ、高い屈折率および高透明性をもつ硬化膜等を形成することができるので、バックライト装置等に使用される高屈折率の基板を用いた導光板等の製造に好適に用いられる。
前記化合物(A1)は上記化合物(A)の中の一部の化合物である。なお、前記式(b-4)は、上記有機基群bの式(b-2)と式(b-1)においてh=0の場合の式とを合わせた式である。
[有機基群a]
前記化合物(A2)は上記化合物(A)の中の一部の化合物である。
2.硬化膜等
本発明の撥液性硬化膜およびマイクロレンズは、上述した本発明のインクを硬化させることで得られる。上述した本発明のインクをインクジェット法により塗布した後に、該インクに紫外線や可視光線等の光を照射して硬化させることで得られる撥液性硬化膜やマイクロレンズが好ましい。
3.積層体
本発明のインクから得られる撥液性硬化膜は基板上に形成され、基板と硬化膜との積層体を構成する。また、本発明のインクから得られるマイクロレンズは硬化膜上に形成され、硬化膜とマイクロレンズとの積層体または基板と硬化膜とマイクロレンズとの積層体を構成する。このような積層体としては、たとえば、波長589nmの光に対する屈折率が1.55以上である基板上に、波長589nmの光に対する屈折率が1.55以上の撥液性硬化膜が形成され、該撥液性硬化膜上に本発明のインクから得られるマイクロレンズが形成されてなる積層体が挙げられる。好ましくは、本発明のインクから得られる撥液性硬化膜上に本発明のインクから得られるマイクロレンズが形成され、基板と該硬化膜と該マイクロレンズとの積層体を構成する。さらには、本発明のインクから得られる硬化膜が好適に使用される導光板は、基板上に本発明のインクから得られる撥液性硬化膜が形成され、該硬化膜上に本発明のインクから得られるマイクロレンズが形成された積層体である。
3.1.基板
前記基板は、インクが塗布される対象となり得るものであれば特に限定されず、その形状は平板状に限られず、曲面状であってもよい。
3.2.導光板
前記導光板としては、屈折率が1.55以上、より好ましくは1.55~1.65である基板上に本発明のインクから得られた撥液性硬化膜が形成され、該硬化膜上に屈折率が1.55以上、より好ましくは1.55~1.65である本発明のインクから得られたマイクロレンズが形成された積層体であることが好ましい。このような構成とすると、前記硬化膜は屈折率を1.55以上にすることができることから、基板と撥液性硬化膜との間の界面および撥液性硬化膜とマイクロレンズとの間の界面における屈折率差を小さくすることができるため、導光板に入射した光の各界面における反射を抑制することができ、効率よく光を取り出すことができる。
4.光学部品
本発明の光学部品は、本発明のインクより得られる硬化物が形成されたものであれば、特に制限されないが、光の取り出し効率や輝度などの点から、前記導光板であることが好ましい。
5.映像表示装置
本発明の映像表示装置は、前記光学部品を含む。このため、液晶ディスプレイなどの表示特性に優れる映像表示装置に好適に用いることができる。
[製造例1]アクリレートA-1(式(4)で表わされる化合物)の製造例
100mLの三つ口フラスコに温度計、滴下漏斗を備え付け、該フラスコにTrisP-HAP(商品名:本州化学工業(株))9.19g(30mmol)、トリエチルアミン9.21g(91mmol)、THF40mlを仕込み、撹拌し溶解した。これに、氷浴下でアクリル酸クロライド8.24g(91mmol)をTHF10mlに溶解した溶液を、滴下漏斗を用いて30分かけて滴下した。滴下終了後、反応温度を50℃に上げて3時間撹拌した後、温度を下げ反応をとめた。反応液を室温になるまで放冷後、未反応のアクリル酸クロライドを氷水でクエンチした。その後。飽和炭酸水素ナトリウム水溶液で分液し、アクリル酸クロライドの分解物であるアクリル酸を除去した。続いて、エバポレーターでTHFを除去し、式(4)で表される3官能アクリレート化合物(アクリレートA-1)13.81gを得た。
100mLの三つ口フラスコに温度計、滴下漏斗を備え付け、該フラスコにTrisP-PA(商品名:本州化学工業(株))12.74g(30mmol)、トリエチルアミン9.21g(91mmol)、THF40mlを仕込み、撹拌し溶解した。これに、氷浴下でアクリル酸クロライド8.24g(91mmol)をTHF10mlに溶解した溶液を、滴下漏斗を用いて30分かけて滴下した。滴下終了後、反応温度を50℃に上げて3時間撹拌した後、温度を下げ反応をとめた。反応液を室温になるまで放冷後、未反応のアクリル酸クロライドを氷水でクエンチした。その後。飽和炭酸水素ナトリウム水溶液で分液し、アクリル酸クロライドの分解物であるアクリル酸を除去した。続いて、エバポレーターでTHFを除去し、式(5)で表される3官能アクリレート化合物(アクリレートA-2)17.01gを得た。
100mLの三つ口フラスコに温度計、滴下漏斗を備え付け、該フラスコにTrisP-TC(商品名:本州化学工業(株))14.42g(30mmol)、トリエチルアミン9.21g(91mmol)、THF40mlを仕込み、撹拌し溶解した。これに、氷浴下でアクリル酸クロリド8.24g(91mmol)をTHF10mlに溶解した溶液を、滴下漏斗を用いて30分かけて滴下した。滴下終了後、反応温度を50℃に上げて3時間撹拌し、温度を下げ反応をとめた。反応液を室温になるまで放冷後、未反応のアクリル酸クロライドを氷水でクエンチした。その後。飽和炭酸水素ナトリウム水溶液で分液し、アクリル酸クロライドの分解物であるアクリル酸を除去した。続いて、エバポレーターでTHFを除去し、式(6)で表される3官能アクリレート化合物(アクリレートA-3)18.71gを得た。
100mLの三つ口フラスコに温度計、滴下漏斗を備え付け、該フラスコにTrisP-PA(商品名:本州化学工業(株))12.74g(30mmol)、THF40mlジウラリン酸ジブチルスズ85.0mg(135mmol)、カレンズAOI12.74g(30mmol)(商品名:昭和電工(株)、イソシアネート基を有するアクリレート)を仕込み、撹拌し溶解した。反応温度を50℃に上げて3時間撹拌した後、温度を下げ反応をとめた。反応液を室温になるまで放冷後、飽和炭酸水素ナトリウム水溶液で分液し、有機層を抽出した。続いて、エバポレーターでTHFを除去し、下記構造で表される3官能アクリレート化合物(アクリレートA-4)23.51gを得た。
化合物(A2)として、上記製造例1で製造したアクリレートA-1と、化合物(B)として、m-フェノキシベンジルアクリレートであるPOB-A(商品名:共栄社化学(株))と、光重合開始剤(C)として、オキシ-フェニル-酢酸2-[2-オキソ-2-フェニル-アセトキシ-エトキシ]-エチルエステルとオキシ-フェニル-酢酸2-[2-ヒドロキシ-エトキシ]-エチルエステルとの混合物であるIRGACURE754(商品名:BASF、以後「Ir754」と略す。)と、(メタ)アクリルモノマー(E)として、テトラヒドロフルフリルアクリレートであるライトアクリレートTHF-A(商品名:共栄社化学(株)、以後「THF-A」と略す。)とを下記組成割合にて混合し、PTFE製のメンブレンフィルター(0.2μm)でろ過し、ろ液(レンズインク1)を得た。
(B)POB-A 1.00g
(C)Ir754 0.49g
(H)THF-A 4.00g
E型粘度計(東機産業(株) 商品名:TV-22、以下同じ)を用い、25℃におけるレンズインク1の粘度を測定した結果、15.6mPa・sであった。
(実施例2)レンズインク2の調製
化合物(A2)として、上記製造例1で製造したアクリレートA-1の代わりに上記製造例2で製造したアクリレートA-2を用いて、下記組成割合としたこと以外は実施例1と同様にしてレンズインク2を調製した。
(B)POB-A 1.00g
(C)Ir754 0.49g
(H)THF-A 4.00g
E型粘度計を用い、25℃におけるレンズインク2の粘度を測定した結果、18.4mPa・sであった。
(実施例3)レンズインク3の調製
化合物(A2)として、上記製造例1で製造したアクリレートA-1の代わりに上記製造例3で製造したアクリレートA-3を用いて、下記組成割合としたこと以外は、実施例1と同様にしてレンズインク3を調製した。
(B)POB-A 1.00g
(C)Ir754 0.49g
(H)THF-A 4.00g
E型粘度計を用い、25℃におけるレンズインク3の粘度を測定した結果、19.5mPa・sであった。
(実施例4)レンズインク4の調製
化合物(A2)として、上記製造例1で製造したアクリレートA-1の代わりに上記製造例3で製造したアクリレートA-4を用いて、下記組成割合としたこと以外は、実施例1と同様にしてレンズインク4を調製した。
(B)POB-A 1.00g
(C)Ir754 0.42g
(H)THF-A 3.00g
E型粘度計を用い、25℃におけるレンズインク4の粘度を測定した結果、25.3mPa・sであった。
(実施例5)レンズインク5の調製
化合物(B)としてPOB-Aの代わりにO-フェニルフェノールEO変性アクリレートであるアロニックスM-106(商品名:東亞合成(株)、以後「M-106」と略す。)を用いて、下記組成割合としたこと以外は、実施例1と同様にして、レンズインク5を調製した。
(B)M-106 1.00g
(C)Ir754 0.49g
(H)THF-A 4.00g
E型粘度計を用い、25℃におけるレンズインク5の粘度を測定した結果、21.1mPa・sであった。
(比較例1)レンズインク6の調製
化合物(A2)であるアクリレートA-1の代わりに、フルオレン骨格を持つアクリレートであるオグソールEA-0200(商品名:大阪ガスケミカル(株)、以後「EA-0200」と略す。)を用いて、下記組成割合としたこと以外は実施例1と同様にして、レンズインク6を調製した。
POB-A 1.00g
Ir754 0.49g
THF-A 4.00g
E型粘度計を用い、25℃におけるレンズインク7の粘度を測定した結果、18.2mPa・sであった。
(比較例2)レンズインク7の調製
化合物(A2)であるアクリレートA-1の代わりに、ホスフィンオキサイド骨格を持つアクリレートであるFRM-1000(商品名:日本化薬(株))を用いて、下記組成割合としたこと以外は実施例1と同様にして、レンズインク7を調製した。
POB-A 1.00g
Ir754 0.49g
THF-A 4.00g
E型粘度計を用い、25℃におけるレンズインク8の粘度を測定した結果、9.8mPa・sであった。
(比較例3)レンズインク8の調製
化合物(A2)であるアクリレートA-1の代わりに、ビスフェノールF骨格を持つアクリレートであるアロニックスM-208(商品名:東亞合成(株)、以後「M-208」と略す。)を用いて、下記組成割合としたこと以外は実施例1と同様にして、レンズインク8を調製した。
Ir754 0.49g
THF-A 5.00g
E型粘度計を用い、25℃におけるレンズインク8の粘度を測定した結果、13.1mPa・sであった。
(比較例4)レンズインク9の調製
化合物(A2)であるアクリレートA-1の代わりに、ビスフェノールA骨格を持つアクリレートであるM-211B(商品名:東亞合成(株)、以後「M-211B」と略す。)を用いて、下記組成割合としたこと以外は実施例1と同様にして、レンズインク9を調製した。
Ir754 0.49g
THF-A 5.00g
E型粘度計を用い、25℃におけるレンズインク10の粘度を測定した結果、15.9mPa・sであった。
(比較例5)レンズインク10の調製
化合物(A2)であるアクリレートA-1を用いず、下記組成割合としたこと以外は実施例1と同様にして、レンズインク10を調製した。
Ir754 0.49g
THF-A 5.00g
E型粘度計を用い、25℃におけるレンズインク10の粘度を測定した結果、4.8mPa・sであった。
上記で得られたレンズインク1~10について、インクジェット吐出性、その光硬化物に対して、光硬化性、硬化膜の屈折率、硬化膜の光透過率および硬化膜の黄色味(b*)を評価した。
各実施例および比較例で得られたレンズインク1~10を、それぞれインクジェットカートリッジに注入し、これをインクジェット装置(FUJIFILM Dimatix Inc.のDMP-2831(商品名))に装着し、吐出電圧(ピエゾ電圧)20Vで、ヘッド温度はインクまたは組成物の粘度に応じ適宜調整し、駆動周波数5kHz、塗布回数1回の吐出条件で、印刷解像度を512dpiに設定し、4cm角のガラス基板の中央部分にレンズインクを3cm角のパターン状に塗布した。UV照射装置((株)ジャテックのJ-CURE1500(商品名))を用いて1000mJ/cm2のUV光を露光し膜が硬化(パターン表面に指触跡が残らない)するか確認した。1000mJ/cm2の露光で膜が硬化しないものはさらに1000mJ/cm2露光し(総露光量2000mJ/cm2)、それでも膜が硬化しないものはさらに1000mJ/cm2露光し(総露光量3000mJ/cm2)、光硬化させた。このようにして、レンズインクの硬化膜が形成されたガラス基板を得た。
(インク吐出性の評価)
このようにして得られた3cm角の硬化膜パターンの乱れ、印刷のかすれを観察して、インクジェットインクおよび組成物の吐出性を評価した。評価基準は以下のとおりである。
B:パターンの形成はできるが、パターンの乱れ、印刷のかすれが多い
C:パターンの形成ができない(インクまたは組成物をうまく吐出できない)
(光硬化性の評価)
上記で得られた3cm角の硬化膜パターンが形成された基板の硬化膜表面を指触し、硬化膜パターンの表面状態を顕微鏡観察した。評価基準は以下のとおりである。
B:1000mJ/cm2のUV露光量ではパターン表面に指触跡が残るが、2000mJ/cm2のUV露光量ではパターン表面に指触跡が残らない
C:2000mJ/cm2のUV露光量ではパターン表面に指触跡が残るが、3000mJ/cm2のUV露光量ではパターン表面に指触跡が残らない
(硬化膜の屈折率・光透過率の評価)
上記で得られた3cm角の硬化膜パターンが形成された基板を用い、硬化膜パターンの屈折率および波長400nmでの光透過率および黄色味(b*)を測定した。
(表面処理剤の調製)
レンズを形成するためには、撥液性の硬化膜が必要である。ガラス基板上に撥液性硬化膜を形成するための表面処理剤を調製した。フルオレン骨格を持つアクリレートであるEA-0200と、光重合剤Ir754と、有機溶媒として2-ヒドロキシイソ酪酸メチルと(三菱ガス化学(株)、以後「HBM」と略す。)、テトラヒドロフルフリルアクリレートであるTHF-Aと、界面活性剤としてアクリロイル基を有するTegorad2200N(商品名:エボニック デグサ ジャパン(株))を下記組成割合で混合し、PTFE製のメンブレンフィルター(0.2μm)でろ過し、ろ液(以下、このろ液を表面処理剤Aとよぶ)を得た。
Ir754 2.00g
HBM 51.80g
THF-A 10.00g
Tegorad2200N 0.20g
E型粘度計を用い、25℃における表面処理剤Aの粘度を測定した結果、4.9mPa・sであった。
(マイクロレンズの形成および評価)
ガラス基板を、PC基板に替え、吐出電圧(ピエゾ電圧)を18V、ヘッド温度を28℃に変更した以外は前記インクジェット吐出法と同様の条件で表面処理剤Aを塗布し、光硬化した後、得られた硬化膜上にレンズインク1~10を前記インクジェット吐出法と同様の条件でドットパターン状に塗布し、それぞれマイクロレンズを形成した。上記のようにして得られたマイクロレンズ(ドットパターン)の形状を光学式顕微鏡BX51(商品名:OLYMPUS(株))を用いて観察したところ、上記いずれの組み合わせにおいても、得られたマイクロレンズの形状はほぼ真円であった。マイクロレンズを真上から観察したレンズは円形であることが理想である。
Claims (13)
- 少なくとも3つのベンゼン環および下記有機基群aから選ばれる少なくとも1つの基からなり、前記ベンゼン環同士の結合はすべて1つの前記基を介してなされている骨格構造と、前記ベンゼン環に結合する下記有機基群dから選ばれる少なくとも1つの基とを有する化合物(A2)3~60重量%と下記式(7)または(8)で表される化合物(B)1~60重量%とを含む光硬化性インクジェットインク。
[有機基群a]
[有機基群d]
[有機基群c]
- 化合物(B)が、m-フェノキシベンジル(メタ)アクリレート、o-フェニルフェノールEO 変性(メタ)アクリレートまたはパラクミルフェノールEO 変性(メタ)アクリレートである請求項1~4のいずれかに記載の光硬化性インクジェットインク。
- さらに、光重合開始剤(C)を含む請求項1~5のいずれかに記載の光硬化性インクジェットインク。
- さらに、溶媒(D)、または化合物(A2)および化合物(B)以外の(メタ)アクリレートモノマー(H)を含む請求項1~6のいずれかに記載の光硬化性インクジェットインク。
- さらに界面活性剤(F)を含む請求項1~7のいずれかに記載の光硬化性インクジェットインク。
- 請求項1~8のいずれかに記載の光硬化性インクジェットインクを光硬化させて得られるマイクロレンズ。
- 撥液性硬化膜上に請求項9に記載のマイクロレンズが形成されてなる積層体。
- 波長589nmの光に対する屈折率が1.55以上である基板上に、波長589nmの光に対する屈折率が1.55以上の撥液性硬化膜が形成され、該撥液性硬化膜上に請求項9に記載のマイクロレンズが形成されてなる積層体。
- 請求項10または11に記載の積層体を有する光学部品。
- 請求項12に記載の光学部品を含む映像表示装置。
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US11261267B1 (en) * | 2020-12-17 | 2022-03-01 | Canon Kabushiki Kaisha | Photocurable composition |
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US20160376451A1 (en) | 2016-12-29 |
WO2015080141A1 (ja) | 2015-06-04 |
US20160362567A1 (en) | 2016-12-15 |
KR102188998B1 (ko) | 2020-12-09 |
CN105765009B (zh) | 2019-08-06 |
CN105765011A (zh) | 2016-07-13 |
JP6341213B2 (ja) | 2018-06-13 |
JPWO2015080142A1 (ja) | 2017-03-16 |
KR20160091341A (ko) | 2016-08-02 |
JP6361664B2 (ja) | 2018-07-25 |
JPWO2015080141A1 (ja) | 2017-03-16 |
KR20160091343A (ko) | 2016-08-02 |
KR102188999B1 (ko) | 2020-12-09 |
CN105765011B (zh) | 2020-02-28 |
CN105765009A (zh) | 2016-07-13 |
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