WO2019026546A1 - 共重合体及びカラーフィルター用感光性樹脂組成物 - Google Patents
共重合体及びカラーフィルター用感光性樹脂組成物 Download PDFInfo
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- WO2019026546A1 WO2019026546A1 PCT/JP2018/025725 JP2018025725W WO2019026546A1 WO 2019026546 A1 WO2019026546 A1 WO 2019026546A1 JP 2018025725 W JP2018025725 W JP 2018025725W WO 2019026546 A1 WO2019026546 A1 WO 2019026546A1
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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
- C08F220/343—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate in the form of urethane links
- C08F220/346—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate in the form of urethane links and further oxygen
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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
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1811—C10or C11-(Meth)acrylate, e.g. isodecyl (meth)acrylate, isobornyl (meth)acrylate or 2-naphthyl (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
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
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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
- C08F220/286—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 and containing polyethylene oxide in the alcohol moiety, e.g. methoxy polyethylene glycol (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
- C08F220/32—Esters containing oxygen in addition to the carboxy oxygen containing epoxy radicals
- C08F220/325—Esters containing oxygen in addition to the carboxy oxygen containing epoxy radicals containing glycidyl radical, e.g. glycidyl (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
- C08F220/365—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 containing further carboxylic moieties
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
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- 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
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0005—Production of optical devices or components in so far as characterised by the lithographic processes or materials used therefor
- G03F7/0007—Filters, e.g. additive colour filters; Components for display devices
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/028—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with photosensitivity-increasing substances, e.g. photoinitiators
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/032—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders
- G03F7/033—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders the binders being polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/105—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having substances, e.g. indicators, for forming visible images
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/40—Treatment after imagewise removal, e.g. baking
Definitions
- the present invention relates to a novel copolymer, a photosensitive resin composition for a color filter containing the same, a color filter, an image display device having the same, and a method for producing a color filter.
- photosensitive resin compositions that can be cured by active energy rays such as ultraviolet rays and electron beams are widely used in the fields of various coatings, printing, paints, adhesives and the like. Also in the field of electronic materials such as printed wiring boards, photosensitive resin compositions that can be cured by active energy rays are used as solder resists, resists for color filters, and the like. Furthermore, although the required characteristics for the curable photosensitive resin composition are becoming increasingly diverse and sophisticated, among them, short-time curing considering productivity, low-temperature curing which suppresses thermal damage of applied members Is required.
- the color filter generally includes a transparent substrate such as a glass substrate, red (R), green (G) and blue (B) pixels formed on the transparent substrate, and a black matrix formed at the boundary of the pixels. It comprises a pixel and a protective film formed on the black matrix.
- a color filter having such a configuration is usually manufactured by sequentially forming a black matrix, pixels and a protective film on a transparent substrate.
- Various methods have been proposed as methods for forming the pixel and the black matrix (hereinafter, the pixel and the black matrix are referred to as “colored pattern”).
- the pigment / dye dispersion method manufactured by the photolithography method using the photosensitive resin composition as a resist and repeating coating, exposure, development and baking is excellent in durability and colored with few defects such as pinholes. It is currently mainstream because it gives patterns.
- the photosensitive resin composition used in the photolithography method contains an alkali-soluble resin, a reactive diluent, a photopolymerization initiator, a colorant and a solvent.
- the pigment / dye dispersion method while having the above advantages, since a pattern of black matrix, R, G, B is repeatedly formed, high heat resistance is required, and as a coloring agent which can withstand high baking temperature It is often a problem that there are limitations such as the limited types of colorants that can be used.
- Patent Document 1 enables low-temperature curing by using a compound such as an alkali-soluble resin, a polymerizable compound having an ethylenically unsaturated bond, a radiation-sensitive polymerization initiator, a colorant, and ethyl 3-aminobenzenesulfonate. Disclosed is a coloring composition having improved storage stability.
- Patent Document 2 discloses a polymer precursor whose reaction to a final product is promoted by a basic substance or by heating in the presence of a basic substance, and a specific base generating a base by irradiation of electromagnetic waves and heating. Low temperature curing is enabled by using a photosensitive resin composition containing an agent.
- the present invention has been made to solve the above-mentioned problems, and it is a photosensitive material for color filters which is excellent in developability and storage stability and gives a colored pattern excellent in solvent resistance even when cured at low temperature. It is an object of the present invention to provide a functional resin composition and a copolymer useful for the preparation of the photosensitive resin composition. Another object of the present invention is to provide a color filter having a coloring pattern excellent in solvent resistance, a method for producing the same, and an image display device having the color filter.
- a copolymer (A) comprising a structural unit (a) having a block isocyanato group, a structural unit (b) having an acid group, and a structural unit (c) having an epoxy group.
- the constituent unit (a) having a block isocyanato group is a constituent unit derived from a block isocyanato group-containing (meth) acrylate, and dissociation of the block isocyanato group of the block isocyanato group-containing (meth) acrylate
- the copolymer according to [1] which has a rate of 5 to 99% by mass when heated at 100 ° C. for 30 minutes.
- the blocking agent of the structural unit (a) having a block isocyanato group is diethyl malonate, 3,5-dimethylpyrazole, methyl ethyl ketoxime, methyl 2-hydroxybenzoate, methyl 4-hydroxybenzoate and 3,
- the copolymer according to any one of [1] to [3], wherein the structural unit (b) having an acid group is a structural unit derived from an unsaturated carboxylic acid.
- the copolymer (A) comprises 1 to 60 mol% of the structural unit (a) having the block isocyanato group, 5 to 65 mol% of the structural unit (b) having the acid group, and the epoxy
- the molar ratio of the structural unit (a) having the block isocyanato group to the structural unit (c) having the epoxy in the copolymer (A) is 10: 90 to 75: 25 [1] The copolymer according to any one of [6] to [6].
- the copolymer (A) is 2- (3,5-dimethylpyrazol-1-yl) carbonylaminoethyl methacrylate, 2- [O- (1'-methylpropylideneamino) carboxyamino methacrylate Ethyl, malonic acid 2-[[[[2-methyl-1-oxo-2-propenyl] oxy] ethyl] amino] carbonyl] -1,3 diethyl ester, benzoic acid 4-[[[[[2- [ (2-Methyl-1-oxo-2-propen-1-yl) oxy] ethyl] amine] carbonyl] oxy] methyl ester, benzoic acid 2-[[[[[[[2-[(2-methyl-1-oxy) -2-propen-1-yl) oxy] ethyl] amine] carbonyl] oxy] methyl ester and 2-methyl-2-propenoic acid-2- [l-[[(3,5-dimethylphenoxy
- the copolymer (A) is 2- (3,5-dimethylpyrazol-1-yl) carbonylaminoethyl methacrylate, 2- [O- (1′-methylpropylideneamino) carboxyamino methacrylate Ethyl, malonic acid 2-[[[[[[2-methyl-1-oxo-2-propenyl] oxy] ethyl] amino] carbonyl] -1,3 diethyl ester, benzoic acid 4-[[[[[2- [ (2-Methyl-1-oxo-2-propen-1-yl) oxy] ethyl] amine] carbonyl] oxy] methyl ester, benzoic acid 2-[[[[[[[[2-[(2-methyl-1-oxy) -2-propen-1-yl)
- the copolymer (A) is a structural unit (a) derived from 2- [O- (1′-methylpropylideneamino) carboxyamino] ethyl methacrylate, and a structural unit derived from (meth) acrylic acid
- the copolymer (A) is a constituent unit (a) derived from 2- (3,5-dimethylpyrazol-1-yl) carbonylaminoethyl methacrylate, and a constituent unit derived from (meth) acrylic acid
- the copolymer (A) is a constituent unit (a) derived from 2- (3,5-dimethylpyrazol-1-yl) carbonylaminoethyl methacrylate, and a constituent unit derived from (meth) acrylic acid b) a glycidyl (meth) acrylate-derived structural unit (c), a 2-hydroxyethyl methacrylate-derived structural unit (d), and a dicyclopentanyl (meth) acrylate-derived structural unit (e) The copolymer as described in [10].
- the above-mentioned copolymer (A) is a structural unit derived from malonic acid 2-[[[2-methyl-1-oxo-2-propenyl] oxy] ethyl] amino] carbonyl] -1,3 diethyl ester (A), (meth) acrylic acid-derived structural unit (b), glycidyl (meth) acrylate-derived structural unit (c), and dicyclopentanyl (meth) acrylate-derived structural unit (e)
- the copolymer (A) further contains a structural unit (d) having a hydroxyl group and a structural unit (e) other than the structural units (a) to (d),
- the copolymer (A) contains 1 to 40 mol% of the structural unit (a) having the block isocyanato group, 1 to 60 mol% of the structural unit (b) having the acid group, and the epoxy group 1 to 70 mol% of the structural unit (c), more than 0 to 50 mol% of the structural unit (d) having the hydroxyl group, and more than 0 to 80 mol% of the structural unit (e) [1 ]
- the copolymer (A) further contains a structural unit (d) having a hydroxyl group and a structural unit (e) other than the structural units (a) to (d),
- the copolymer (A) contains 3 to 20 mol% of the structural unit (a) having the block isocyanato group, 20 to 50 mol% of the structural unit (b) having the acid group, and the epoxy group 20-40 mol% of the structural unit (c), more than 0 mol% to 20 mol% of the structural unit (d) having the hydroxyl group, and 20-40 mol% of the structural unit (e) [1] to [4]
- a polymer comprising the copolymer (A) according to any one of [1] to [16], and at least one of a solvent (B) and a reactive diluent (C). Composition.
- Photosensitive resin composition a copolymer (A) according to any one of [1] to [16], a solvent (B), a reactive diluent (C) and a photopolymerization initiator (D).
- a color filter having a colored pattern comprising a cured product of the photosensitive resin composition for a color filter according to any one of [19] to [22].
- the photosensitive resin composition for a color filter according to any one of [19] to [22] is coated on a substrate, exposed to light, alkali-developed, and then baked at a temperature of 160 ° C. or less to obtain a colored pattern
- a method of manufacturing a color filter comprising the step of forming.
- a photosensitive resin composition for a color filter which is excellent in developability and storage stability and gives a colored pattern excellent in solvent resistance even when cured at low temperature
- the photosensitive resin composition Copolymers useful for the preparation of it is possible to provide a color filter having a coloring pattern excellent in solvent resistance, a method for producing the same, and an image display device having the color filter.
- the copolymer (A) of the present invention is characterized by containing a structural unit (a) having a block isocyanato group, a structural unit (b) having an acid group, and a structural unit (c) having an epoxy group. .
- the structural unit (a) which has a block isocyanato group which a copolymer (A) contains is a structural unit derived from a block isocyanato group containing monomer.
- a monomer having an ethylenically unsaturated bond and a blocked isocyanato group, etc. for example, the isocyanato group in an isocyanate compound having a vinyl group, a (meth) acryloyloxy group or the like in the molecule is blocked with a blocking agent Compounds are included.
- the reaction of the isocyanate compound with the blocking agent can be carried out with or without the presence of a solvent.
- a solvent it is necessary to use a solvent inert to the isocyanato group.
- an organic metal salt such as tin, zinc or lead, a tertiary amine or the like may be used as a catalyst.
- the reaction can generally be carried out at -20 to 150 ° C, but is preferably carried out at 0 to 100 ° C.
- the compound represented by following formula (1) can be mentioned.
- R 1 represents a hydrogen atom or a methyl group
- R 2 is, -CO -, - COOR 3 - (wherein, R 3 is an alkylene group having 1 to 6 carbon atoms) Or -COO-R 4 O-CONH-R 5- (wherein, R 4 is an alkylene group having 2 to 6 carbon atoms, and R 5 is preferably having 2 to 12 carbon atoms which may have a substituent. And an alkylene group having 6 to 12 carbon atoms).
- R 2 is preferably —COOR 3 —, wherein R 3 is preferably an alkylene group having 1 to 4 carbon atoms.
- isocyanate compound represented by the said Formula (1) 2-isocyanatoethyl (meth) acrylate, 2-isocyanatopropyl (meth) acrylate, 3-isocyanatopropyl (meth) acrylate, 2 And -isocyanato-1-methylethyl (meth) acrylate, 2-isocyanato-1,1-dimethylethyl (meth) acrylate, 4-isocyanatocyclohexyl (meth) acrylate, methacryloyl isocyanate and the like.
- an equimolar (1 mol: 1 mol) reaction product of 2-hydroxyalkyl (meth) acrylate and a diisocyanate compound can be used.
- the alkyl group of the above-mentioned 2-hydroxyalkyl (meth) acrylate is preferably an ethyl group or an n-propyl group, more preferably an ethyl group.
- diisocyanate compounds described above include hexamethylene diisocyanate, 2,4- (or 2,6-)-tolylene diisocyanate (TDI), 4,4'-diphenylmethane diisocyanate (MDI), 3,5,5-trimethyl- Examples include 3-isocyanatomethylcyclohexyl isocyanate (IPDI), m- (or p-) xylene diisocyanate, 1,3- (or 1,4-) bis (isocyanatomethyl) cyclohexane, lysine diisocyanate and the like.
- IPDI 3-isocyanatomethylcyclohexyl isocyanate
- m- (or p-) xylene diisocyanate 1,3- (or 1,4-) bis (isocyanatomethyl) cyclohexane, lysine diisocyanate and the like.
- (meth) acrylate in the present specification means that any of acrylate and methacrylate may be used, and the expression of (meth) acrylic acid may be any of acrylic acid and methacrylic acid. Means.
- phenolic compounds dimethyl malonate, diethyl malonate, methyl acetoacetate, ethyl acetoacetate, acetylacetone Active methylenes such as butyl mercaptan such as butyl mercaptan, thiophenol and tert-dodecyl mercaptan; amines such as diphenylamine, phenyl naphthylamine, aniline and carbazole; acid amides such as acetanilide, acetanisidide, acetic acid amide and benzamide; succinic acid Acid imides such as imide and maleimide; imidazoles such as imidazole, 2-methylimidazole and 2-ethylimidazole; Pyrazo such as pyrazole and 3,5-dimethylpyrazole Urea system such as urea, thiourea, ethylene urea etc.
- Active methylenes such as butyl mercaptan such
- carbamate system such as phenyl N-phenylcarbamate, 2-oxazolidone etc. imine system such as ethyleneimine, polyethyleneimine etc. formalmadoxime, acetoaldoxime And oximes such as acetoxime, methyl ethyl ketoxime, methyl isobutyl ketoxime, cyclohexanone oxime; and bisulfite such as sodium bisulfite and potassium bisulfite.
- These blocking agents may be used alone or in combination of two or more.
- the blocking agent protects the highly reactive isocyanato group, but heating causes the block isocyanato group to dissociate to regenerate the isocyanato group.
- the isocyanato group is reacted with a reactive functional group contained in the copolymer (A) or the reactive diluent (C), that is, an acid group, an optionally contained hydroxy group, an amino group, etc. Form a cured product with high crosslink density.
- a block isocyanato group-containing (meth) acrylate is used as a monomer for giving the structural unit (a) having a block isocyanato group.
- the block isocyanato group having a dissociation rate of preferably 5 to 99% by mass, more preferably 8 to 97% by mass, most preferably 10 to 95% by mass, when heat treated at 100 ° C. for 30 minutes. It is more preferable to use a contained (meth) acrylate.
- the dissociation rate of the blocked isocyanato group of the blocked isocyanato group-containing (meth) acrylate was determined by preparing an n-octanol solution having a concentration of 20% by mass of the blocked isocyanato group-containing (meth) acrylate. Analysis of mass loss of the blocked isocyanato group-containing (meth) acrylate after heating at 100 ° C.
- a blocking agent for block isocyanato group-containing (meth) acrylates having such a dissociation rate diethyl malonate, 3,5-dimethylpyrazole, methyl ethyl ketoxime, methyl 2-hydroxybenzoate, methyl 4-hydroxybenzoate, 3,5-xylenol, ⁇ -butyrolactam, 1-methoxy-2-propanol, 2,6-dimethylphenol and diisopropylamine.
- diethyl malonate, 3,5-dimethylpyrazole, methyl ethyl ketoxime, methyl 2-hydroxybenzoate, methyl 4-hydroxybenzoate and 3,5-xylenol are more preferable from the viewpoint of low-temperature curing. .
- the block isocyanato group containing (meth) acrylate whose dissociation temperature of the block isocyanato group of block isocyanato group containing (meth) acrylate is 80 degreeC or more.
- a block isocyanato group-containing (meth) acrylate having a dissociation temperature of 80 ° C. or higher the stability of the copolymer during synthesis can be sufficiently ensured, and unintended crosslinking in the modification reaction described later The reaction can be reduced.
- the dissociation temperature of the block isocyanato group is 160 ° C. or less, the baking temperature can be sufficiently lowered, and the solvent resistance of the cured coating film can be sufficiently ensured.
- the dissociation temperature of the block isocyanato group of block isocyanato group containing (meth) acrylate prepares n-octanol solution whose density
- Reaction product Showa Denko Co., Ltd., dissociation temperature of block isocyanato group: 110 ° C., dissociation rate: 70% by mass
- karen MOI-BM metalhacroyloxyethyl isocyanate and methyl ethyl ketoxime represented by the following formula (4)
- Product of reaction with water, manufactured by Showa Denko KK, solution of blocked isocyanato group Temperature: 130 ° C., the dissociation constant: including 18 methacrylate and the corresponding acrylates to these, such as mass%) can be mentioned.
- These block isocyanato group-containing (meth) acrylates may be used alone or in combination of two or more.
- the proportion of the structural unit (a) having a block isocyanato group contained in the copolymer (A) is not particularly limited, but is preferably 1 to 40 mol%, more preferably 2 to 30 mol%, and most preferably It is 3 to 25 mol%.
- the proportion of the structural unit (a) having a block isocyanato group is 1 to 40 mol%, the solvent resistance of the cured coating is improved, and the storage stability of the copolymer (A) is also maintained.
- the constituent unit (b) having an acid group contained in the copolymer (A) is a constituent unit derived from an acid group-containing monomer (however, the unit corresponding to the constituent unit (a) having a block isocyanato group) except).
- the acid group include a carboxyl group, a sulfo group, a phospho group and the like, and among these, a carboxyl group is preferable in terms of availability.
- a monomer having a polymerizable unsaturated bond and an acid group for example, unsaturated carboxylic acid or its anhydride, unsaturated sulfonic acid, unsaturated phosphonic acid etc. It can be mentioned.
- preferable monomers include (meth) acrylic acid, ⁇ -bromo (meth) acrylic acid, ⁇ -furyl (meth) acrylic acid, crotonic acid, propiolic acid, cinnamic acid, ⁇ -cyanocinnamic acid and maleic acid
- Maleic anhydride monomethyl maleate, monoethyl maleate, monoisopropyl maleate, fumaric acid, itaconic acid, itaconic acid, itaconic acid, citraconic acid, unsaturated carboxylic acids such as citraconic acid or anhydrides thereof; 2-acrylamido-2 -Unsaturated sulfonic acids such as methyl propane sulfonic acid, tert-butyl acrylamido sulfonic acid, p-styrene sulfonic acid; unsaturated phosphonic acids such as vinyl phosphonic acid; and the like. These monomers may be used alone or in combination of two or more. Among these, unsaturated
- the alkali developability at the time of using the copolymer (A) as a photosensitive material is greatly improved.
- the proportion of the structural unit (b) having an acid group contained in the copolymer (A) is not particularly limited, but is preferably 1 to 60 mol%, more preferably 10 to 50 mol%, and most preferably 15 to It is 40 mol%.
- the proportion of the structural unit (b) having an acid group is 1 to 60 mol%, an appropriate rate of alkali development can be obtained, and a fine pattern can be formed.
- the structural unit (c) having an epoxy group contained in the copolymer (A) is a structural unit derived from an epoxy group-containing monomer (however, the structural unit (a) having the block isocyanato group, the acid group Except for those corresponding to the structural unit (b).
- the monomer which has a polymerizable unsaturated bond and an epoxy group for example, oxiranyl (meth) acrylate, glycidyl (meth) acrylate, 2-methyl glycidyl (meth) acrylate 2-ethylglycidyl (meth) acrylate, 2-oxiranylethyl (meth) acrylate, 2-glycidyloxyethyl (meth) acrylate, 3-glycidyloxypropyl (meth) acrylate, glycidyloxyphenyl (meth) acrylate, etc.
- oxiranyl (meth) acrylate for example, oxiranyl (meth) acrylate, glycidyl (meth) acrylate, 2-methyl glycidyl (meth) acrylate 2-ethylglycidyl (meth) acrylate, 2-oxiranylethyl (meth) acrylate, 2-glycidyl
- the inclusion of the structural unit (c) having an epoxy group in the copolymer (A) greatly improves the solvent resistance when the copolymer (A) is used as a photosensitive material.
- the proportion of the structural unit (c) having an epoxy group contained in the copolymer (A) is not particularly limited, but is preferably 1 to 60 mol%, more preferably 5 to 50 mol%, and most preferably 10 to It is 40 mol%.
- the proportion of the structural unit (c) having an epoxy group is 1 to 60 mol%, the solvent resistance of the cured coating and the storage stability of the copolymer (A) are compatible.
- the molar ratio of the structural unit (a) having a block isocyanato group to the structural unit (c) having an epoxy can be, for example, 1:99 to 99: 1, and curing From the viewpoint of the solvent resistance of the coating film and the storage stability of the copolymer (A), the ratio is preferably 5:95 to 85:15, and more preferably 10:90 to 75:25.
- the copolymer (A) may further contain a structural unit (d) having a hydroxyl group.
- the structural unit (d) having a hydroxyl group contained in the copolymer (A) is a structural unit derived from a hydroxyl group-containing monomer (however, a structural unit (a) having the block isocyanato group, a structure having the acid group A unit (b) and the thing applicable to the structural unit (c) which has the said epoxy group are remove
- a monomer having a polymerizable unsaturated bond and a hydroxyl group for example, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl Examples include (meth) acrylate, 2,3-dihydroxypropyl (meth) acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 4-hydroxybutyl acrylate and the like. These monomers may be used alone or in combination of two or more.
- 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 2,3-dihydroxypropyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate from the viewpoint of polymerizability Preferred are (meth) acrylic acid ester derivatives containing a hydroxyl group such as hydroxy-3-phenoxypropyl acrylate and 4-hydroxybutyl acrylate, and more preferred is 2-hydroxyethyl (meth) acrylate.
- the structural unit (d) having a hydroxyl group is not essential, when the structural unit (d) having a hydroxyl group is contained in the copolymer (A), the copolymer (A) is used as a photosensitive material. The solvent resistance upon use is greatly improved.
- the proportion of the structural unit (d) having an acid group contained in the copolymer (A) is not particularly limited, but is preferably more than 0 mol% to 50 mol%, more preferably more than 0 mol% to 40 mol% Most preferably, it is more than 0 mol% to 30 mol%.
- the proportion of the structural unit (d) having a hydroxyl group is more than 0 mol% to 50 mol%, the solvent resistance of the cured coating and the storage stability of the copolymer (A) are compatible.
- a constituent unit (a) having a block isocyanato group a constituent unit having an acid group (b), a constituent unit (c) having an epoxy group and Along with the structural unit (d) having a hydroxyl group, other structural units (e) copolymerizable therewith may be contained (however, the structural unit (a) having the above-mentioned block isocyanato group, having the above-mentioned acid group
- the structural unit (b), the structural unit (c) having an epoxy group, and the structural unit (d) having a hydroxyl group are excluded.
- the monomer giving the other structural unit (e) include styrene, ⁇ -methylstyrene, o-vinyltoluene, m-vinyltoluene, p-vinyltoluene, o-chlorostyrene, m-chlorostyrene, p- Aromatic vinyl compounds such as chlorostyrene, o-methoxystyrene, m-methoxystyrene, p-methoxystyrene, p-nitrostyrene, p-cyanostyrene, p-acetylaminostyrene and the like; norbornene (bicyclo [2.2.1] Hept-2-ene), 5-methylbicyclo [2.2.1] hept-2-ene, 5-ethylbicyclo [2.2.1] hept-2-ene, tetracyclo [4.4.0.1 2,5 .
- pentadeca-3-ring having a norbornene structure such as ene-olefin; butadiene, isoprene, dienes such as chloroprene; methyl (meth) acrylate, ethyl (meth) acrylate, n- propyl (meth) acrylate, iso - Propyl (meth) acrylate, n-butyl (meth) acrylate, sec-butyl (meth) acrylate, iso-butyl (meth) acrylate, tert-butyl (meth) acrylate, pentyl (meth) acrylate, neopentyl (meth) Acrylate, benzyl (meth) acrylate, isoamyl (meth) acrylate, hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate, do
- (Meth) acrylic acid amide (meth) acrylic acid anilide, (meth) acrylonitrile, acrolein, vinyl chloride, vinylidene chloride, vinyl fluoride, vinylidene fluoride, N-vinyl pyrrolidone, vinyl pyridine, vinyl acetate, vinyl toluene, etc.
- unsaturated dicarboxylic acid diesters N-phenylmaleimide, N-cyclohexylmaleimide, N-laurylmaleimide, N- (4-hydroxyphenyl) Things such as maleimide Reimido; and the like.
- (meth) acrylic acid esters are preferable, and methyl (meth) acrylate and dicyclopentanyl (meth) acrylate are particularly preferable.
- These monomers may be used alone or in combination of two or more.
- the proportion of the other structural unit (e) contained in the copolymer (A) is not particularly limited, but is preferably more than 0 mol% to 80 mol%, more preferably 5 to 70 mol%, and most preferably 10 It is up to 60 mol%.
- the other structural unit (e) is not essential, but the other structural unit (e) is included in the copolymer (A) to appropriately improve the properties of the solvent resistance and the coating film. Can.
- the proportions of the block isocyanato group-containing monomer (a0), the acid group-containing monomer (b0) and the epoxy group-containing monomer (c0) used in the production of the copolymer (A) are not particularly limited, but preferably (A0) 1 to 60 mol%, (b0) 5 to 65 mol% and (c0) 5 to 65 mol%, more preferably (a0) 5 to 50 mol%, (b0) 15 to 55 mol% and c0) 15 to 55 mol%, most preferably 10 to 40 mol% of (a0), 25 to 45 mol% of (b0) and 25 to 45 mol% of (c0).
- the copolymer (A) further contains a structural unit (d) having a hydroxyl group and another structural unit (e), a block isocyanato group-containing monomer (a0) used in the production of the copolymer (A)
- the ratio of the acid group-containing monomer (b0), the epoxy group-containing monomer (c0), the hydroxyl group-containing monomer (d0) and the other monomers (e0) is preferably (a0) 1 to 40 mol%, (b0) 1 -60 mol%, (c0) 1 to 70 mol%, (d0) more than 0 mol% to 50 mol% and (e0) more than 0 mol% to 80 mol%, more preferably (a0) 2 to 30 mol% (B0) 10 to 55 mol%, (c0) 10 to 60 mol%, (d0) more than 0 mol% to 30 mol% and (e0) 5 to 60 mol%, most preferably (a0) 3 to 20 Mol
- the copolymerization reaction of the block isocyanato group-containing monomer (a0), the acid group-containing monomer (b0), the epoxy group-containing monomer (c0), the hydroxyl group-containing monomer (d0) and the other monomer (e0) is known in the art. It can be carried out in the presence or absence of a polymerization solvent according to the radical polymerization method of For example, after these monomers are optionally dissolved in a solvent, a polymerization initiator may be added to the solution, and a polymerization reaction may be performed at 50 to 100 ° C. for 1 to 20 hours.
- the block isocyanato group dissociates and the resulting isocyanato group reacts with the acid group to form a gel. It is preferable to carry out the polymerization at a temperature below the dissociation temperature of the blocked isocyanato group, preferably at a temperature about 20 to 50 ° C. below the dissociation temperature of the blocked isocyanate group.
- the solvent that can be used for this copolymerization reaction is not particularly limited as long as it is inert to the reaction, and, for example, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol mono -N-propyl ether, diethylene glycol mono-n-butyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, Dipropylene glycol mono-n-propyl ether, dipropylene glycol (Poly) alkylene glycol monoalkyl ethers such as mono-n-butyl ether, tripropylene glycol monomethyl ether and tripropylene glycol monoethyl ether; ethylene glycol
- ether solvents are preferable, and propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, diethylene glycol methyl ethyl ether and ethylene glycol monomethyl ether are more preferable.
- the amount of the solvent used for the copolymerization reaction is not particularly limited, but generally 30 to 1,000 parts by mass, preferably 50 to 800 parts by mass, based on 100 parts by mass of the total amount of the monomers charged.
- the amount of the solvent is controlled to 1,000 parts by mass or less, the decrease in molecular weight of the copolymer (A) due to the chain transfer action is suppressed, and the viscosity of the copolymer (A) is controlled within an appropriate range. can do.
- the amount of the solvent to 30 parts by mass or more, the abnormal polymerization reaction can be prevented, the polymerization reaction can be stably performed, and the coloration or gelation of the copolymer (A) can be prevented. You can also.
- the polymerization initiator that can be used for this copolymerization reaction is not particularly limited, and examples thereof include azobisisobutyronitrile, azobisisovaleronitrile, benzoyl peroxide, and t-butylperoxy-2- Ethyl hexanoate etc. are mentioned. These polymerization initiators may be used alone or in combination of two or more.
- the amount of the polymerization initiator used is generally 0.5 to 20 parts by mass, preferably 1.0 to 10 parts by mass, based on 100 parts by mass of the total amount of monomers.
- the weight average molecular weight in terms of polystyrene of the copolymer (A) is not particularly limited, but preferably 1,000 to 50,000, more preferably 3,000 to 40,000 according to the above-mentioned production method.
- the copolymer (A) can be obtained.
- the weight average molecular weight of the copolymer (A) is 1,000 or more, chipping of a colored pattern is less likely to occur after alkali development when used as a photosensitive resin composition.
- the weight average molecular weight of the copolymer (A) is 50,000 or less, the development time becomes appropriate, and practicability is secured.
- the acid value (JIS K6901 5.3) of a copolymer (A) can be selected suitably, When it mix
- the alkali developability at the time of using as a photosensitive resin composition becomes favorable for the acid value of a copolymer (A) to be 20 KOHmg / g or more.
- the acid value of the copolymer (A) is 300 KOHmg / g or less, the exposed portion (photocured portion) is difficult to dissolve in the alkali developer, so the pattern shape becomes good.
- the epoxy equivalent of the copolymer (A) is not particularly limited, but is preferably in the range of 200 to 2,000 g / mol, more preferably 300 to 1,500 g / mol, and most preferably 480 to 900 g / mol.
- the epoxy equivalent of the copolymer (A) is 200 g / mol or more, the stability is good.
- the epoxy equivalent is 2,000 g / mol or less, sufficient solvent resistance is secured.
- the epoxy equivalent is the mass of the polymer per mole of epoxy group of the polymer, and can be determined by dividing the mass of the polymer by the amount of epoxy group of the polymer (g / mol) .
- the epoxy equivalent is a theoretical value calculated from the amount of raw materials used to introduce the epoxy group.
- the copolymer (A) of the present invention contains a blocked isocyanato group in the molecule.
- the content of the blocked isocyanato group may be appropriately selected, but in general, it is selected in such a range that the blocked isocyanate group equivalent is 400 to 6,000, preferably 1,000 to 5,000.
- the block isocyanato group equivalent is the mass of the polymer per mole of the blocked isocyanato group contained in the polymer, and is determined by dividing the mass of the polymer by the number of moles of the blocked isocyanato group contained in the polymer. Is possible (g / mol).
- the blocked isocyanato group equivalent is a theoretical value calculated from the charged amount of the blocked isocyanato group-containing monomer.
- a polymer composition comprising at least one of a solvent (B) and a reactive diluent (C) in addition to the above-mentioned copolymer (A) is provided.
- the solvent (B) is not particularly limited as long as it is an inert solvent which does not react with the copolymer (A), and the solvent in the same category as the solvent used in producing the copolymer (A) may be used it can.
- Preferred solvents (B) are hydroxyl group-containing organic solvents such as propylene glycol monomethyl ether and diethylene glycol from the viewpoint of preventing abnormal polymerization and stably performing the polymerization reaction.
- the polymer composition of the present invention can be prepared by appropriately mixing the desired solvent (B) with the copolymer (A) isolated from the polymerization system, but the copolymer (A) is not necessarily polymerized. It is not necessary to isolate from the above, and the solvent contained at the end of the copolymerization reaction can be used as it is, and at that time, the desired solvent can be further added as needed. Moreover, the solvent contained in the other component used when preparing a polymer composition can also be used as a component of a solvent (B).
- the reactive diluent (C) is a compound having at least one polymerizable ethylenically unsaturated group as a polymerizable functional group in the molecule, and a compound having a plurality of polymerizable functional groups is preferable among them.
- Examples of monofunctional monomers used as the reactive diluent (C) include (meth) acrylamide, methylol (meth) acrylamide, methoxymethyl (meth) acrylamide, ethoxymethyl (meth) acrylamide, propoxymethyl (meth) acrylamide, butoxymethoxy Methyl (meth) acrylamide, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, 2- hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) Acrylate, 4-hydroxybutyl (meth) acrylate, 2-phenoxy-2-hydroxypropyl (meth) acrylate, 2- (meth) acryloyloxy-2-hydroxypropyl phthalate, glycerol Mono (meth) acrylate, tetrahydrofurfuryl (meth) acrylate,
- ethylene glycol di (meth) acrylate As a polyfunctional monomer used as a reactive diluent (C), ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, polypropylene glycol Di (meth) acrylate, butylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, 1,6-hexane glycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, glycerin di (meth) Acrylate, pentaerythritol di (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol Hexa (meth
- (meth) acrylate such as tri (meth) acrylate of tris (hydroxyethyl) isocyanurate; aromatic vinyl compounds such as divinylbenzene, diallyl phthalate, diallyl benzene phosphonate; adipic acid
- aromatic vinyl compounds such as divinylbenzene, diallyl phthalate, diallyl benzene phosphonate; adipic acid
- dicarboxylic esters such as divinyl; triallyl cyanurate, methylene bis (meth) acrylamide, (meth) acrylamide methylene ether, and condensates of polyhydric alcohol and N-methylol (meth) acrylamide.
- These monomers may be used alone or in combination of two or more.
- the compounding amounts of the copolymer (A), the solvent (B) and the reactive diluent (C) in the polymer composition may be appropriately adjusted according to the purpose of use.
- the polymer composition contains the copolymer (A), the solvent (B) and the reactive diluent (C)
- a photosensitive resin composition which contains a copolymer (A), a solvent (B), a reactive diluent (C) and a photopolymerization initiator (D).
- a copolymer (A) a copolymer (A)
- a solvent (B) a reactive diluent (C)
- a photopolymerization initiator (D) a photopolymerization initiator
- the solvent (B) and the reactive diluent (C) those described above can be used.
- the photopolymerization initiator (D) is not particularly limited, and examples thereof include benzoins such as benzoin, benzoin methyl ether, benzoin ethyl ether and benzoin butyl ether; acetophenone, 2,2-dimethoxy-2-phenylacetophenone, 1,1 -Dichloroacetophenone, 4- (1-t-butyldioxy-1-methylethyl) acetophenone, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholino-propan-1-one, 2-benzyl-2 Acetophenones such as -dimethylamino-1- (4-morpholinophenyl) butanone-1; anthraquinones such as 2-methyl anthraquinone, 2-amyl anthraquinone, 2-t-butyl anthraquinone, 1-chloroanthraquinone, etc .; xanthone, thioxan
- a photosensitive resin composition for a color filter comprising a copolymer (A), a solvent (B), a reactive diluent (C), a photopolymerization initiator (D) and a colorant (E) Provided.
- a copolymer (A) a copolymer
- B a solvent
- C a reactive diluent
- D a photopolymerization initiator
- E a colorant
- the solvent (B), the reactive diluent (C) and the photopolymerization initiator (D) those described above can be used.
- the colorant (E) is not particularly limited as long as it dissolves or disperses in the solvent (B), and examples thereof include dyes and pigments.
- the dye is an acid having an acidic group such as carboxylic acid or sulfonic acid from the viewpoint of solubility in the solvent (B) or alkaline developer, interaction with other components in the photosensitive resin composition, heat resistance, etc. It is preferable to use a dye, a salt of an acid dye with a nitrogen compound, a sulfonamide of an acid dye, or the like.
- dyes examples include: acid alizarin violet N; acid black 1, 2, 24, 48; acid blue 1, 7, 9, 25, 29, 40, 45, 62, 70, 74, 80, 83, 90, 92, 112, 113, 120, 129, 147; acid chrome violet K; acid green 1, 3, 5, 25, 27, 50; acid orange 6, 7, 8, 10, 12, 50, 51, 52, 56, 63, 74, 95; acid red 1, 4, 8, 14, 17, 18, 26, 27, 29, 31, 34, 35, 37, 42, 44, 50, 51, 52, 57, 69, 73 80, 87, 88, 91, 92, 94, 97, 103, 111, 114, 129, 133 134, 138, 143, 145, 150, 151, 158, 176, 183, 198, 211, 215, 216, 217, 249, 252, 257, 260, 266, 274; acid violet 6B, 7, 9, 17, 19; acid yellow 1, 3, 9, 11, 17, 17, 23, 25, 29, 34, 36, 42, 54,
- an azo-based, xanthene-based, anthraquinone-based or phthalocyanine-based acid dye is preferable. These dyes may be used alone or in combination of two or more, depending on the color of the target pixel.
- pigments examples include C.I. I. Pigment yellow 1, 3, 12, 13, 14, 15, 16, 17, 20, 24, 31, 53, 83, 86, 93, 94, 109, 110, 117, 125, 128, 137, 138, 139, Yellow pigments such as 147, 148, 150, 153, 154, 166, 173, 194, 214; I. Orange pigments such as C.I. pigment oranges 13, 31, 36, 38, 40, 42, 43, 51, 55, 59, 61, 64, 65, 71, 73; I.
- colorants (E) may be used alone or in combination of two or more, depending on the color of the target pixel. In addition, according to the color of the pixel made into the objective, it can also be used combining said dye and a pigment.
- a known dispersant may be added to the photosensitive resin composition from the viewpoint of improving the dispersibility of the pigment.
- a dispersing agent it is preferable to use the polymeric dispersing agent which is excellent in the dispersion stability over time.
- polymer dispersants include urethane dispersants, polyethyleneimine dispersants, polyoxyethylene alkyl ether dispersants, polyoxyethylene glycol diester dispersants, sorbitan aliphatic ester dispersants, aliphatic modified esters A system dispersant etc. are mentioned.
- EFKA manufactured by F-KA Chemical's BV (EFKA) Co., Ltd.
- Disperbyk manufactured by BIC Chemie Co., Ltd.
- Disperon manufactured by Kushimoto Chemical Co., Ltd.
- the compounding amount of the dispersant may be appropriately set according to the type of the pigment to be used.
- the blending amounts of the copolymer (A), the solvent (B), the reactive diluent (C), the photopolymerization initiator (D) and the colorant (E) are the same as in the copolymer (A) in the photosensitive resin composition. 10 to 100 parts by mass of the copolymer (A) and 30 to 1,000 parts by mass of the solvent (B) based on 100 parts by mass of the total amount of the organic solvent and the reactive diluent (C), the reactive diluent
- the copolymer (C) is more than 0 parts by mass to 90 parts by mass
- the photopolymerization initiator (D) is 0.1 to 30 parts by mass
- the colorant (E) is 3 to 80 parts by mass.
- the coloring agent (E) is 5 to 70 parts by mass, more preferably 30 to 75 parts by mass of the copolymer (A), 100 to 700 parts by mass of the solvent (B), the reactive diluent (C) There 25-70 parts by weight, the photopolymerization initiator (D) 1 to 15 parts by mass, the colorant (E) is 10 to 60 parts by weight. If it is a compounding quantity of this range, it will become a photosensitive resin composition which has a suitable viscosity.
- the blending amounts of the copolymer (A), the solvent (B), the reactive diluent (C) and the photopolymerization initiator (D) are The above numerical range is applicable.
- the polymer composition and the photosensitive resin composition of the present invention have, in addition to the above-described components, known additives such as known coupling agents, leveling agents, and thermal polymerization inhibitors in order to impart predetermined characteristics. May be blended.
- the blending amount of these additives is not particularly limited as long as the effects of the present invention are not impaired.
- the photosensitive resin composition of the present invention can be produced by mixing the above-mentioned components using a known mixing apparatus. Moreover, after preparing the polymer composition containing a copolymer (A) and a solvent (B) previously according to need, a reactive diluent (C), a photoinitiator (D), and a coloring agent (E) It is also possible to mix and manufacture.
- the photosensitive resin composition obtained as described above is suitable as a resist since it has alkali developability. Curing of the photosensitive resin composition may be appropriately selected at a baking temperature of 250 ° C. or less, but since the copolymer (A) of the present invention is excellent in curability at a low temperature, it can be used for conventional materials. In comparison, the baking temperature can be lowered. When a pigment is used as the colorant (E) in the photosensitive resin composition, sufficient curability can be obtained even at a baking temperature of 160 ° C. or less.
- the photosensitive resin composition of the present invention is advantageous in terms of energy consumption because the crosslinking reaction proceeds sufficiently even if the baking temperature is lowered.
- the baking temperature is preferably 210 ° C. or less, more preferably 180 ° C. or less, and most preferably 160 ° C. or less.
- the lower limit of the baking temperature is not necessarily uniform depending on the kind of block isocyanato group contained in the copolymer (A), but it is required to be equal to or higher than the dissociation temperature of the block isocyanato group, usually 80 ° C.
- the temperature is preferably 90 ° C. or more, more preferably 100 ° C. or more. If the baking temperature is too low, it will be difficult to sufficiently improve the solvent resistance of the coating.
- the baking time can be selected as appropriate, but is usually 10 minutes to 4 hours, preferably 20 minutes to 2 hours.
- the photosensitive resin composition of the present invention is a resist used to manufacture various resists, in particular, color filters to be incorporated into organic EL displays (for black PDL), liquid crystal displays, solid-state imaging devices such as CCDs and CMOS, etc. Is preferred.
- the photosensitive resin composition of this invention gives the cured coating film excellent in the solvent resistance, the hardening characteristic in low temperature, etc., it can also be used for various coatings, an adhesive agent, the binder for printing inks, etc.
- the photosensitive resin composition of the present invention is excellent in developability and storage stability, and can form a colored pattern excellent in solvent resistance even when the baking temperature at the time of pattern formation is lowered. It is very useful as a photosensitive material for filters.
- the photosensitive resin composition of the present invention can also contribute to the development of the flexible display with low temperature curing, the reduction of the energy consumption in the manufacturing process, and the alleviation of the restriction of the colorant used.
- the color filter of the present invention has a colored pattern formed using the above-mentioned photosensitive resin composition.
- the color filter is usually composed of a substrate, RGB pixels formed thereon, a black matrix formed at the boundary of each pixel, and a protective film formed on the pixels and the black matrix. In this configuration, other than the pixel and the black matrix (coloring pattern) formed using the photosensitive resin composition described above, other configurations can be adopted.
- a colored pattern is formed on a substrate. Specifically, black matrix and RGB pixels are sequentially formed on the substrate.
- the material of the substrate is not particularly limited, and a glass substrate, a silicon substrate, a polycarbonate substrate, a polyester substrate, a polyamide substrate, a polyamide imide substrate, a polyimide substrate, an aluminum substrate, a printed wiring substrate, an array substrate, etc. may be used appropriately. it can.
- the colored pattern can be formed by photolithography. Specifically, after the above-mentioned photosensitive resin composition is applied on a substrate to form a coating film, the coating film is exposed through a photomask of a predetermined pattern to photocure the exposed portion. Then, after developing the unexposed portion with an aqueous alkaline solution, baking can be performed to form a predetermined colored pattern.
- the method for applying the photosensitive resin composition is not particularly limited, but screen printing, roll coating, curtain coating, spray coating, spin coating, etc. can be used.
- coating of the photosensitive resin composition you may volatilize a solvent (B) by heating using heating means, such as a circulation type oven, an infrared heater, a hotplate, as needed.
- the heating conditions are not particularly limited, and may be appropriately set according to the type of photosensitive resin composition to be used. Generally, heating may be performed at a temperature of 50 ° C. to 120 ° C. for 30 seconds to 30 minutes.
- the formed coating film is partially exposed by irradiation with active energy rays such as ultraviolet light and excimer laser light through a negative mask.
- active energy rays such as ultraviolet light and excimer laser light through a negative mask.
- the energy dose to be irradiated may be appropriately selected according to the composition of the photosensitive resin composition, and for example, preferably 30 to 2000 mJ / cm 2 .
- the light source used for exposure is not particularly limited, and a low pressure mercury lamp, a medium pressure mercury lamp, a high pressure mercury lamp, a xenon lamp, a metal halide lamp and the like can be used.
- the aqueous alkaline solution used for development is not particularly limited, but aqueous solutions of sodium carbonate, potassium carbonate, calcium carbonate, sodium hydroxide, potassium hydroxide and the like; aqueous solutions of amine compounds such as ethylamine, diethylamine, dimethylethanolamine and the like; Methyl ammonium, 3-methyl-4-amino-N, N-diethylaniline, 3-methyl-4-amino-N-ethyl-N- ⁇ -hydroxyethylaniline, 3-methyl-4-amino-N-ethyl- N- ⁇ -methanesulfonamidoethylaniline, 3-methyl-4-amino-N-ethyl-N- ⁇ -methoxyethylaniline and p-phenylenediamines such as sulfates, hydrochlorides or p-toluenesulfonates thereof An aqueous solution of a compound of the series can be used.
- the conditions for baking are not particularly limited, and heat treatment may be performed depending on the type of photosensitive resin composition to be used.
- the baking temperature is 200 ° C. or less, the solvent resistance of the coloring pattern is insufficient, but in the photosensitive resin composition of the present invention, the baking is performed at a temperature of 120 ° C. or less It is also possible to form a colored pattern showing sufficient solvent resistance. Therefore, the baking temperature can be lowered, and in the case of baking at high temperature, the processing time can be shortened, which is a great advantage in manufacturing.
- the baking temperature is usually 210 ° C. or less, preferably 160 ° C. or less, more preferably 120 ° C. or less, and the baking time is usually 10 minutes to 4 hours, preferably 20 minutes to 2 hours. To be done.
- a desired colored pattern can be obtained by sequentially repeating application, exposure, development and baking as described above using a photosensitive resin composition for a black matrix and photosensitive resin compositions for red, green and blue pixels. It can be formed.
- the formation method of the coloring pattern by photocuring was demonstrated above, if it uses the photosensitive resin composition which mix
- a protective film is formed on the coloring pattern (each pixel of RGB and a black matrix).
- the protective film is not particularly limited, and may be formed using a known one.
- the color filter produced in this manner is excellent in sensitivity and developability, and is produced using a photosensitive resin composition capable of curing at low temperature and giving a colored pattern excellent in solvent resistance. It has an excellent colored pattern with little color change.
- the image display element of the present invention is an image display element provided with the above-mentioned color filter, and specific examples thereof include liquid crystal display elements, organic EL display elements, solid-state imaging elements such as CCD elements and CMOS elements.
- the image display device of the present invention may be produced according to a conventional method except using the above color filter. For example, in the case of manufacturing a liquid crystal display element, the color filter is formed on a substrate, and then an electrode, a spacer, and the like are sequentially formed. Then, an electrode or the like may be formed over another substrate, and both may be attached to each other to inject and seal a predetermined amount of liquid crystal.
- the measuring method of an acid value and a weight average molecular weight is as follows.
- Acid value the acid value of the copolymer (A) measured according to JIS K 6901 5.3, which is the water required to neutralize the acidic component contained in 1 g of the copolymer (A) The number of mg of potassium oxide is meant.
- Weight average molecular weight (Mw) means standard polystyrene equivalent weight average molecular weight measured under the following conditions using gel permeation chromatography (GPC).
- Example 1 In a flask equipped with a stirrer, a dropping funnel, a condenser, a thermometer and a gas inlet tube, 257.3 g of diethylene glycol methyl ethyl ether was added, and the mixture was stirred while being purged with nitrogen and heated to 78 ° C.
- the mixture was stirred at 78 ° C. for 3 hours to carry out a copolymerization reaction to form a copolymer.
- the polymer composition of 1 (component concentration other than solvent concentration 40 mass%) was obtained.
- the weight average molecular weight of the copolymer in the obtained polymer composition was 7,500, and the acid value was 102.3 KOHmg / g.
- Examples 2 to 12 and Comparative Examples 1 to 3 The copolymerization reaction was carried out under the same conditions as in Example 1 except that the raw materials listed in Table 1 were used. 2 to 15 polymer compositions (concentration of components other than solvent: 40% by mass) were obtained. The weight average molecular weight and the acid value of the copolymer in the obtained polymer composition are shown in Table 1.
- 2- (3,5-dimethylpyrazol-1-yl) carbonylaminoethyl methacrylate is manufactured by Showa Denko KK, Karenz MOI-BP, and the dissociation rate of the blocked isocyanato group is 70% by mass.
- malonic acid 2-[[[2-methyl-1-oxo-2-propenyl] oxy] ethyl] amino] carbonyl] -1,3 diethyl ester is manufactured by Showa Denko KK, Karenz MOI-DEM, block Dissociation rate of isocyanato group: 90% by mass, and benzoic acid 4-[[[[2-[(2-methyl-1-oxo-2-propen-1-yl] oxy] ethyl] amine] carbonyl] Oxy] methyl ester has a dissociation rate of the block isocyanato group: 40% by mass, and benzoic acid 2-[[[[[[[2-[(2-methyl-1-oxy-2-prope] -1-yl) oxy] ethyl] amine] carbonyl] oxy] methyl ester has a dissociation rate of the blocked isocyanato group: 75% by mass, and 2-propenoic acid-2-methyl-2-[[((3,5) -Dimethyl
- This green pigment dispersion was mixed with other compounding components shown in Table 3 (that is, polymer composition, reactive diluent, photopolymerization initiator and solvent) to prepare a photosensitive resin composition.
- the blending amounts of the respective components are as shown in Table 3.
- the photosensitive resin composition of Examples 13-24 is prepared using each of the polymer composition of Examples 1-12 (sample No. 1-12), and the photosensitive resin composition of Comparative Examples 4-6 is prepared.
- the product was prepared using each of the polymer compositions of Comparative Examples 1 to 3 (Samples Nos. 13 to 15). Further, the amount of the polymer composition includes the solvent contained at the end of the copolymer reaction, and the amount of the solvent contained in each sample is also added to the solvent as the compounding component.
- the unexposed area is dissolved and developed by spraying an aqueous solution containing 0.1% by mass of sodium carbonate at a temperature of 23 ° C. and a pressure of 0.3 MPa, followed by baking at 100 ° C. for 20 minutes.
- a predetermined pattern was formed.
- the residue after alkali development was confirmed by observing the pattern after alkali development using an electron microscope S-3400 manufactured by Hitachi High-Technologies Corporation. The criteria for this evaluation are as follows. ⁇ : no residue ⁇ : residue present Table 4 shows the evaluation results of alkali developability.
- sample nos. The photosensitive resin compositions of Examples 13 to 24 using the polymer compositions of 1 to 12 were good in alkali developability and solvent resistance. Furthermore, since the storage stability of the copolymer correlates with the storage stability of the photosensitive resin composition to which it was blended, from the results of Table 5, sample No. 1 was obtained. It can be said that the photosensitive resin compositions of Examples 13 to 24 using the polymer compositions of 1 to 12 have good storage stability. On the other hand, for sample no. The photosensitive resin compositions of Comparative Examples 4 to 6 using the polymer compositions of 13 to 15 have good storage stability but do not have sufficient solvent resistance, and the photosensitive resin of Comparative Example 6 The composition was also insufficient in alkali developability.
- the present invention it is possible to provide a photosensitive resin composition which is excellent in developability and excellent in solvent resistance and storage stability. Further, according to the present invention, a copolymer useful for the preparation of a photosensitive resin composition having the above-mentioned properties can be provided.
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Abstract
Description
また、本発明は、耐溶剤性に優れた着色パターンを有するカラーフィルター及びその製造方法並びに該カラーフィルターを具備する画像表示素子を提供することを目的とする。
[1]ブロックイソシアナト基を有する構成単位(a)、酸基を有する構成単位(b)及びエポキシ基を有する構成単位(c)を含有することを特徴とする共重合体(A)。
[2]前記ブロックイソシアナト基を有する構成単位(a)が、ブロックイソシアナト基含有(メタ)アクリレート由来の構成単位であり、前記ブロックイソシアナト基含有(メタ)アクリレートのブロックイソシアナト基の解離率が100℃で30分加熱した際、5~99質量%である[1]に記載の共重合体。
[3]前記ブロックイソシアナト基を有する構成単位(a)のブロック剤が、マロン酸ジエチル、3,5-ジメチルピラゾール、メチルエチルケトオキシム、2-ヒドロキシ安息香酸メチル、4-ヒドロキシ安息香酸メチル及び3,5-キシレノールからなる群から選択される1種以上である[1]又は[2]に記載の共重合体。
[4]前記酸基を有する構成単位(b)が、不飽和カルボン酸由来の構成単位である[1]~[3]のいずれかに記載の共重合体。
[5]前記エポキシ基を有する構成単位(c)が、エポキシ基含有(メタ)アクリレート由来の構成単位である[1]~[4]のいずれかに記載の共重合体。
[6]前記共重合体(A)が、前記ブロックイソシアナト基を有する構成単位(a)を1~60モル%、前記酸基を有する構成単位(b)を5~65モル%及び前記エポキシ基を有する構成単位(c)を5~65モル%含有する[1]~[5]のいずれかに記載の共重合体。
[7]前記共重合体(A)における前記ブロックイソシアナト基を有する構成単位(a)と前記エポキシを有する構成単位(c)とのモル比率が、10:90~75:25である[1]~[6]のいずれかに記載の共重合体。
[8]前記共重合体(A)が、メタクリル酸2-(3,5-ジメチルピラゾール-1-イル)カルボニルアミノエチル、メタクリル酸2-[O-(1’-メチルプロピリデンアミノ)カルボキシアミノ]エチル、マロン酸-2-[[[2-メチル-1-オキソ-2-プロペニル]オキシ]エチル]アミノ]カルボニル]-1,3ジエチルエステル、安息香酸-4-[[[[2-[(2-メチル-1-オキソ-2-プロペン-1-イル)オキシ]エチル]アミン]カルボニル]オキシ]メチルエステル、安息香酸-2-[[[[2-[(2-メチル-1-オキシ-2-プロペン-1-イル)オキシ]エチル]アミン]カルボニル]オキシ]メチルエステル及び2-プロペン酸-2-メチルl-2-[[(3,5-ジメチルフェノキシ)カルボニル]アミン]エチルエステルからなる群から選択される少なくとも1種由来の構成単位(a)と、(メタ)アクリル酸由来の構成単位(b)と、グリシジル(メタ)アクリレート由来の構成単位(c)と、ジシクロペンタニル(メタ)アクリレート及びメチル(メタ)アクリレートからなる群から選択される少なくとも1種由来の構成単位(e)とを含有する[1]~[7]のいずれかに記載の共重合体。
[9]前記共重合体(A)が、水酸基を有する構成単位(d)をさらに含有する[1]~[8]のいずれかに記載の共重合体。
[10]前記共重合体(A)が、メタクリル酸2-(3,5-ジメチルピラゾール-1-イル)カルボニルアミノエチル、メタクリル酸2-[O-(1’-メチルプロピリデンアミノ)カルボキシアミノ]エチル、マロン酸-2-[[[2-メチル-1-オキソ-2-プロペニル]オキシ]エチル]アミノ]カルボニル]-1,3ジエチルエステル、安息香酸-4-[[[[2-[(2-メチル-1-オキソ-2-プロペン-1-イル)オキシ]エチル]アミン]カルボニル]オキシ]メチルエステル、安息香酸-2-[[[[2-[(2-メチル-1-オキシ-2-プロペン-1-イル)オキシ]エチル]アミン]カルボニル]オキシ]メチルエステル及び2-プロペン酸-2-メチルl-2-[[(3,5-ジメチルフェノキシ)カルボニル]アミン]エチルエステルからなる群から選択される少なくとも1種由来の構成単位(a)と、(メタ)アクリル酸由来の構成単位(b)と、グリシジル(メタ)アクリレート由来の構成単位(c)と、2-ヒドロキシエチルメタクリレート由来の構成単位(d)と、ジシクロペンタニル(メタ)アクリレート及びメチル(メタ)アクリレートからなる群から選択される少なくとも1種由来の構成単位(e)とを含有する[9]に記載の共重合体。
[11]前記共重合体(A)が、メタクリル酸2-[O-(1’-メチルプロピリデンアミノ)カルボキシアミノ]エチル由来の構成単位(a)と、(メタ)アクリル酸由来の構成単位(b)と、グリシジル(メタ)アクリレート由来の構成単位(c)と、ジシクロペンタニル(メタ)アクリレート由来の構成単位(e)とを含有する[8]に記載の共重合体。
[12]前記共重合体(A)が、メタクリル酸2-(3,5-ジメチルピラゾール-1-イル)カルボニルアミノエチル由来の構成単位(a)と、(メタ)アクリル酸由来の構成単位(b)と、グリシジル(メタ)アクリレート由来の構成単位(c)と、ジシクロペンタニル(メタ)アクリレート由来の構成単位(e)とを含有する[8]に記載の共重合体。
[13]前記共重合体(A)が、メタクリル酸2-(3,5-ジメチルピラゾール-1-イル)カルボニルアミノエチル由来の構成単位(a)と、(メタ)アクリル酸由来の構成単位(b)と、グリシジル(メタ)アクリレート由来の構成単位(c)と、2-ヒドロキシエチルメタクリレート由来の構成単位(d)と、ジシクロペンタニル(メタ)アクリレート由来の構成単位(e)とを含有する[10]に記載の共重合体。
[14]前記共重合体(A)が、マロン酸-2-[[[2-メチル-1-オキソ-2-プロペニル]オキシ]エチル]アミノ]カルボニル]-1,3ジエチルエステル由来の構成単位(a)と、(メタ)アクリル酸由来の構成単位(b)と、グリシジル(メタ)アクリレート由来の構成単位(c)と、ジシクロペンタニル(メタ)アクリレート由来の構成単位(e)とを含有する[8]に記載の共重合体。
[15]前記共重合体(A)が、水酸基を有する構成単位(d)及び前記構成単位(a)~(d)以外の構成単位(e)をさらに含有し、
前記共重合体(A)が、前記ブロックイソシアナト基を有する構成単位(a)を1~40モル%、前記酸基を有する構成単位(b)を1~60モル%、前記エポキシ基を有する構成単位(c)を1~70モル%、前記水酸基を有する構成単位(d)を0モル%超~50モル%及び前記構成単位(e)を0モル%超~80モル%含有する[1]~[5]のいずれかに記載の共重合体。
[16]前記共重合体(A)が、水酸基を有する構成単位(d)及び前記構成単位(a)~(d)以外の構成単位(e)をさらに含有し、
前記共重合体(A)が、前記ブロックイソシアナト基を有する構成単位(a)を3~20モル%、前記酸基を有する構成単位(b)を20~50モル%、前記エポキシ基を有する構成単位(c)を20~40モル%、前記水酸基を有する構成単位(d)を0モル%超~20モル%及び前記構成単位(e)を20~40モル%含有する[1]~[5]のいずれかに記載の共重合体。
[20]前記共重合体(A)と前記反応性希釈剤(C)との合計量100質量部に対して、前記共重合体(A)が10~100質量部、前記溶剤(B)が30~1,000質量部、前記反応性希釈剤(C)が0質量部超~90質量部、前記光重合開始剤(D)が0.1~30質量部、前記着色剤(E)が3~80質量部含有される[19]に記載のカラーフィルター用感光性樹脂組成物。
[21]前記溶剤(B)が、水酸基含有有機溶剤を含む[19]又は[20]に記載のカラーフィルター用感光性樹脂組成物。
[22]前記着色剤(E)が、顔料を含む[19]~[21]のいずれかに記載のカラーフィルター用感光性樹脂組成物。
また、本発明によれば、耐溶剤性に優れた着色パターンを有するカラーフィルター及びその製造方法並びに該カラーフィルターを具備する画像表示素子を提供することができる。
本発明の共重合体(A)は、ブロックイソシアナト基を有する構成単位(a)、酸基を有する構成単位(b)及びエポキシ基を有する構成単位(c)を含有することを特徴とする。
共重合体(A)が含有するブロックイソシアナト基を有する構成単位(a)は、ブロックイソシアナト基含有モノマー由来の構成単位である。該モノマーとしては、エチレン性不飽和結合とブロックイソシアナト基とを有するモノマー等、例えば、分子中にビニル基、(メタ)アクリロイルオキシ基等を有するイソシアネート化合物におけるイソシアナト基を、ブロック剤でブロック化した化合物が挙げられる。イソシアネート化合物とブロック剤との反応は、溶剤の存在の有無に関わらず行うことができる。溶剤を用いる場合、イソシアナト基に対して不活性な溶剤を用いる必要がある。ブロック化反応に際して、錫、亜鉛、鉛等の有機金属塩、3級アミン等を触媒として用いてもよい。反応は、一般に-20~150℃で行うことができるが、0~100℃で行うことが好ましい。上記したイソシアネート化合物の例としては、下記式(1)で表される化合物を挙げることができる。
共重合体(A)が含有する酸基を有する構成単位(b)は、酸基含有モノマー由来の構成単位である(ただし、前記ブロックイソシアナト基を有する構成単位(a)に該当するものは除く)。酸基としては、カルボキシル基、スルホ基、ホスホ基等が挙げられ、これらの中でも、入手しやすさの面からカルボキシル基が好ましい。酸基を有する構成単位(b)を与えるモノマーとしては、重合性不飽和結合と酸基とを有するモノマー、例えば、不飽和カルボン酸又はその無水物、不飽和スルホン酸、不飽和ホスホン酸等が挙げられる。好ましいモノマーの具体例としては、(メタ)アクリル酸、α-ブロモ(メタ)アクリル酸、β-フリル(メタ)アクリル酸、クロトン酸、プロピオール酸、ケイ皮酸、α-シアノケイ皮酸、マレイン酸、無水マレイン酸、マレイン酸モノメチル、マレイン酸モノエチル、マレイン酸モノイソプロピル、フマル酸、イタコン酸、無水イタコン酸、シトラコン酸、無水シトラコン酸等の不飽和カルボン酸又はその無水物;2-アクリルアミド-2-メチルプロパンスルホン酸、tert-ブチルアクリルアミドスルホン酸、p-スチレンスルホン酸などの不飽和スルホン酸;ビニルホスホン酸などの不飽和ホスホン酸;などが挙げられる。これらのモノマーは、単独で用いてもよく、2種以上を組み合わせて用いてもよい。これらの中でも、アルカリ現像性に優れること及び入手の容易性の観点から、不飽和カルボン酸が好ましく、(メタ)アクリル酸がより好ましい。
共重合体(A)が含有するエポキシ基を有する構成単位(c)は、エポキシ基含有モノマー由来の構成単位である(ただし、前記ブロックイソシアナト基を有する構成単位(a)、前記酸基を有する構成単位(b)に該当するものは除く)。エポキシ基を有する構成単位(c)を与えるモノマーとしては、重合性不飽和結合とエポキシ基とを有するモノマー、例えば、オキシラニル(メタ)アクリレート、グリシジル(メタ)アクリレート、2-メチルグリシジル(メタ)アクリレート、2-エチルグリシジル(メタ)アクリレート、2-オキシラニルエチル(メタ)アクリレート、2-グリシジルオキシエチル(メタ)アクリレート、3-グリシジルオキシプロピル(メタ)アクリレート、グリシジルオキシフェニル(メタ)アクリレート等のエポキシ基を含む(メタ)アクリル酸エステル誘導体;3,4-エポキシシクロヘキシル(メタ)アクリレート、3,4-エポキシシクロヘキシルメチル(メタ)アクリレート、2-(3,4-エポキシシクロヘキシル)エチル(メタ)アクリレート、2-(3,4-エポキシシクロヘキシルメチルオキシ)エチル(メタ)アクリレート、3-(3,4-エポキシシクロヘキシルメチルオキシ)プロピル(メタ)アクリレートなどの3,4-エポキシシクロヘキサン環等のエポキシ基含有脂環式炭素環を含む(メタ)アクリル酸エステル誘導体;エポキシ基を含むビニルエーテル化合物;エポキシ基を含むアリルエーテル化合物等が挙げられる。これらのモノマーは、単独で用いてもよく、2種以上を組み合わせて用いてもよい。これらの中でも、重合性及び入手の容易性の観点から、オキシラニル(メタ)アクリレート、グリシジル(メタ)アクリレート、2-メチルグリシジル(メタ)アクリレート、2-エチルグリシジル(メタ)アクリレート、2-オキシラニルエチル(メタ)アクリレート、2-グリシジルオキシエチル(メタ)アクリレート、3-グリシジルオキシプロピル(メタ)アクリレート、グリシジルオキシフェニル(メタ)アクリレート等のエポキシ基含有(メタ)アクリレートが好ましく、グリシジル(メタ)アクリレートがより好ましい。
共重合体(A)は、水酸基を有する構成単位(d)をさらに含有してもよい。共重合体(A)が含有する水酸基を有する構成単位(d)は、水酸基含有モノマー由来の構成単位である(ただし、前記ブロックイソシアナト基を有する構成単位(a)、前記酸基を有する構成単位(b)、前記エポキシ基を有する構成単位(c)に該当するものは除く)。水酸基を有する構成単位(d)を与えるモノマーとしては、重合性不飽和結合と水酸基とを有するモノマー、例えば、2-ヒドロキシエチル(メタ)アクリレート、2-ヒドロキシプロピル(メタ)アクリレート、2-ヒドロキシブチル(メタ)アクリレート、2,3-ジヒドロキシプロピル(メタ)アクリレート、2-ヒドロキシ-3-フェノキシプロピルアクリレート、4-ヒドロキシブチルアクリレートなどが挙げられる。これらのモノマーは、単独で用いてもよく、2種以上を組み合わせて用いてもよい。これらの中でも、重合性の観点から、2-ヒドロキシエチル(メタ)アクリレート、2-ヒドロキシプロピル(メタ)アクリレート、2-ヒドロキシブチル(メタ)アクリレート、2,3-ジヒドロキシプロピル(メタ)アクリレート、2-ヒドロキシ-3-フェノキシプロピルアクリレート、4-ヒドロキシブチルアクリレート等の水酸基を含む(メタ)アクリル酸エステル誘導体が好ましく、2-ヒドロキシエチル(メタ)アクリレートがより好ましい。
本発明においては、共重合体(A)が含有する構成単位として、ブロックイソシアナト基を有する構成単位(a)、酸基を有する構成単位(b)、エポキシ基を有する構成単位(c)及び水酸基を有する構成単位(d)と共に、これらと共重合可能なその他の構成単位(e)が含有されてもよい(ただし、前記ブロックイソシアナト基を有する構成単位(a)、前記酸基を有する構成単位(b)、前記エポキシ基を有する構成単位(c)、水酸基を有する構成単位(d)に該当するものは除く)。その他の構成単位(e)を与えるモノマーの具体例としては、スチレン、α-メチルスチレン、o-ビニルトルエン、m-ビニルトルエン、p-ビニルトルエン、o-クロロスチレン、m-クロロスチレン、p-クロロスチレン、o-メトキシスチレン、m-メトキシスチレン、p-メトキシスチレン、p-ニトロスチレン、p-シアノスチレン、p-アセチルアミノスチレンなどの芳香族ビニル化合物;ノルボルネン(ビシクロ[2.2.1]ヘプト-2-エン)、5-メチルビシクロ[2.2.1]ヘプト-2-エン、5-エチルビシクロ[2.2.1]ヘプト-2-エン、テトラシクロ[4.4.0.12,5.17,10]ドデカ-3-エン、8-メチルテトラシクロ[4.4.0.12,5.17,10]ドデカ-3-エン、8-エチルテトラシクロ[4.4.0.12,5.17,10]ドデカ-3-エン、ジシクロペンタジエン、トリシクロ[5.2.1.02,6]デカ-8-エン、トリシクロ[5.2.1.02,6]デカ-3-エン、トリシクロ[4.4.0.12,5]ウンデカ-3-エン、トリシクロ[6.2.1.01,8]ウンデカ-9-エン、トリシクロ[6.2.1.01,8]ウンデカ-4-エン、テトラシクロ[4.4.0.12,5.17,10.01,6]ドデカ-3-エン、8-メチルテトラシクロ[4.4.0.12,5.17,10.01,6]ドデカ-3-エン、8-エチリデンテトラシクロ[4.4.0.12,5.17,12]ドデカ-3-エン、8-エチリデンテトラシクロ[4.4.0.12,5.17,10.01,6]ドデカ-3-エン、ペンタシクロ[6.5.1.13,6.02,7.09,13]ペンタデカ-4-エン、ペンタシクロ[7.4.0.12,5.19,12.08,13]ペンタデカ-3-エンなどのノルボルネン構造を有する環状オレフィン;ブタジエン、イソプレン、クロロプレンなどのジエン;メチル(メタ)アクリレート、エチル(メタ)アクリレート、n-プロピル(メタ)アクリレート、イソ-プロピル(メタ)アクリレート、n-ブチル(メタ)アクリルレート、sec-ブチル(メタ)アクリレート、イソ-ブチル(メタ)アクリレート、tert-ブチル(メタ)アクリルレート、ペンチル(メタ)アクリレート、ネオペンチル(メタ)アクリレート、ベンジル(メタ)アクリレート、イソアミル(メタ)アクリレート、ヘキシル(メタ)アクリレート、2-エチルヘキシル(メタ)アクリレート、ラウリル(メタ)アクリレート、ドデシル(メタ)アクリレート、シクロペンチル(メタ)アクリレート、シクロヘキシル(メタ)アクリレート、メチルシクロヘキシル(メタ)アクリレート、エチルシクロヘキシル(メタ)アクリレート、1,4-シクロヘキサンジメタノールモノ(メタ)アクリレート、ロジン(メタ)アクリレート、ノルボルニル(メタ)アクリレート、5-メチルノルボルニル(メタ)アクリレート、5-エチルノルボルニル(メタ)アクリレート、ジシクロペンテニル(メタ)アクリレート、ジシクロペンタニル(メタ)アクリレート、ジシクロペンテニルオキシエチルアクリレ-トイソボルニル(メタ)アクリレート、アダマンチル(メタ)アクリレート、テトラヒドロフルフリル(メタ)アクリレート、1,1,1-トリフルオロエチル(メタ)アクリレート、パーフルオロエチル(メタ)アクリレート、パーフルオロ-n-プロピル(メタ)アクリレート、パーフルオロ-イソプロピル(メタ)アクリレート、3-(N,N-ジメチルアミノ)プロピル(メタ)アクリレート、トリフェニルメチル(メタ)アクリレート、フェニル(メタ)アクリレート、クミル(メタ)アクリレート、4-フェノキシフェニル(メタ)アクリレート、フェノキシエチル(メタ)アクリレート、フェノキシポリエチレングリコール(メタ)アクリレート、ノニルフェノキシポリエチレングリコールモノ(メタ)アクリレート、ビフェニルオキシエチル(メタ)アクリレート、ナフタレン(メタ)アクリレート、アントラセン(メタ)アクリレートなどの(メタ)アクリル酸エステル;(メタ)アクリル酸アミド、(メタ)アクリル酸N,N-ジメチルアミド、(メタ)アクリル酸N,N-ジエチルアミド、(メタ)アクリル酸N,N-ジプロピルアミド、(メタ)アクリル酸N,N-ジ-イソプロピルアミド、(メタ)アクリル酸アントラセニルアミドなどの(メタ)アクリル酸アミド;(メタ)アクリル酸アニリド、(メタ)アクリロニトリル、アクロレイン、塩化ビニル、塩化ビニリデン、フッ化ビニル、フッ化ビニリデン、N-ビニルピロリドン、ビニルピリジン、酢酸ビニル、ビニルトルエンなどのビニル化合物;シトラコン酸ジエチル、マレイン酸ジエチル、フマル酸ジエチル、イタコン酸ジエチルなどの不飽和ジカルボン酸ジエステル;N-フェニルマレイミド、N-シクロヘキシルマレイミド、N-ラウリルマレイミド、N-(4-ヒドロキシフェニル)マレイミドなどのモノマレイミド;などが挙げられる。これらの中でも、(メタ)アクリル酸エステルが好ましく、メチル(メタ)アクリレート及びジシクロペンタニル(メタ)アクリレートが特に好ましい。これらのモノマーは、単独で用いてもよく、2種以上を組み合わせて用いてもよい。
共重合体(A)の製造に際して使用されるブロックイソシアナト基含有モノマー(a0)、酸基含有モノマー(b0)及びエポキシ基含有モノマー(c0)の割合は、特に制限はないが、好ましくは、(a0)1~60モル%、(b0)5~65モル%及び(c0)5~65モル%、より好ましくは、(a0)5~50モル%、(b0)15~55モル%及び(c0)15~55モル%、最も好ましくは、(a0)10~40モル%、(b0)25~45モル%及び(c0)25~45モル%である。共重合体(A)が水酸基を有する構成単位(d)及びその他の構成単位(e)をさらに含有する場合、共重合体(A)の製造に際して使用されるブロックイソシアナト基含有モノマー(a0)、酸基含有モノマー(b0)、エポキシ基含有モノマー(c0)、水酸基含有モノマー(d0)及びその他のモノマー(e0)の割合は、好ましくは、(a0)1~40モル%、(b0)1~60モル%、(c0)1~70モル%、(d0)0モル%超~50モル%及び(e0)0モル%超~80モル%、より好ましくは、(a0)2~30モル%、(b0)10~55モル%、(c0)10~60モル%、(d0)0モル%超~30モル%及び(e0)5~60モル%、最も好ましくは、(a0)3~20モル%、(b0)20~50モル%、(c0)20~40モル%、(d0)0モル%超~20モル%及び(e0)20~40モル%である。
本発明においては、上記した共重合体(A)に加えて、溶剤(B)及び反応性希釈剤(C)の少なくとも一方を含む重合体組成物が提供される。溶剤(B)は、共重合体(A)と反応しない不活性な溶剤であれば特に限定されず、共重合体(A)を製造する際に用いた溶剤と同じ範疇のものを用いることができる。好ましい溶剤(B)は、異常な重合を防止し、重合反応を安定して行うことができるという観点から、プロピレングリコールモノメチルエーテル、ジエチレングリコール等の水酸基含有有機溶剤である。
本発明においては、共重合体(A)、溶剤(B)、反応性希釈剤(C)及び光重合開始剤(D)を含有する感光性樹脂組成物が提供される。溶剤(B)及び反応性希釈剤(C)としては、上記したものを用いることができる。
本発明においては、共重合体(A)、溶剤(B)、反応性希釈剤(C)、光重合開始剤(D)及び着色剤(E)を含有するカラーフィルター用感光性樹脂組成物が提供される。溶剤(B)、反応性希釈剤(C)及び光重合開始剤(D)としては、上記したものを用いることができる。
次に、本発明の感光性樹脂組成物の硬化物からなる着色パターンを有するカラーフィルターについて説明する。本発明のカラーフィルターは、上記の感光性樹脂組成物を用いて形成される着色パターンを有する。カラーフィルターは、通常、基板と、その上に形成されるRGBの画素、それぞれの画素の境界に形成されるブラックマトリックス及び画素とブラックマトリックスの上に形成される保護膜とから構成される。この構成において、画素及びブラックマトリックス(着色パターン)が上記の感光性樹脂組成物を用いて形成されることを除けば、その他の構成は公知のものを採用することができる。
本発明の画像表示素子は、上記のカラーフィルターを備えた画像表示素子であり、その具体例として、液晶表示素子、有機EL表示素子、CCD素子やCMOS素子などの固体撮像素子などが挙げられる。本発明の画像表示素子の製造は、上記のカラーフィルターを使用すること以外、常法に従って行えばよい。例えば、液晶表示素子を製造する場合には、基板上に、上記カラーフィルターを形成し、次いで、電極、スペーサー等を順次形成する。そして、もう一枚の基板上に電極等を形成し、両者を張り合わせて所定量の液晶を注入、封止すればよい。
(1)酸価:JIS K6901 5.3に従って測定された共重合体(A)の酸価であって、該共重合体(A)1g中に含まれる酸性成分を中和するのに要する水酸化カリウムのmg数を意味する。
(2)重量平均分子量(Mw)とは、ゲルパーミエーションクロマトグラフィー(GPC)を用いて、下記条件にて測定した標準ポリスチレン換算重量平均分子量を意味する。
カラム:ショウデックス(登録商標) LF-804+LF-804(昭和電工株式会社製)
カラム温度:40℃
試料:共重合体の0.2%テトラヒドロフラン溶液
展開溶媒:テトラヒドロフラン
検出器:示差屈折計(ショウデックス RI-71S)(昭和電工株式会社製)
流速:1mL/min
攪拌装置、滴下ロート、コンデンサー、温度計及びガス導入管を備えたフラスコに、257.3gのジエチレングリコールメチルエチルエーテルを入れた後、窒素置換しながら攪拌し、78℃に昇温した。次に、110.0gのジシクロペンタニルメタクリレート、17.0gのグリシジルメタクリレート、28.4gのメタクリル酸及び12.1gのメタクリル酸2-[O-(1’-メチルプロピリデンアミノ)カルボキシアミノ]エチル(カレンズMOI-BM、昭和電工株式会社製、ブロックイソシアナト基の解離率:18質量%)からなる単量体混合物と、13.4gの2,2’-アゾビス(2,4-ジメチルバレロニトリル)(重合開始剤)を78.7gのジエチレングリコールメチルエチルエーテルに添加し溶解させたものをそれぞれ滴下ロートからフラスコ中に滴下した。滴下終了後、78℃で3時間攪拌して共重合反応を行い、共重合体を生成させ、試料No.1の重合体組成物(溶剤以外の成分濃度40質量%)を得た。得られた重合体組成物中の共重合体の重量平均分子量は7,500であり、酸価は102.3KOHmg/gであった。
表1に記載の原料を用いる以外は実施例1と同様の条件で共重合反応を行い、試料No.2~15の重合体組成物(溶剤以外の成分濃度40質量%)を得た。得られた重合体組成物中の共重合体の重量平均分子量及び酸価を表1に示す。なお、表1において、メタクリル酸2-(3,5-ジメチルピラゾール-1-イル)カルボニルアミノエチルは、昭和電工株式会社製、カレンズMOI-BP、ブロックイソシアナト基の解離率:70質量%であり、マロン酸-2-[[[2-メチル-1-オキソ-2-プロペニル]オキシ]エチル]アミノ]カルボニル]-1,3ジエチルエステルは、昭和電工株式会社製、カレンズMOI-DEM、ブロックイソシアナト基の解離率:90質量%であり、安息香酸-4-[[[[2-[(2-メチル-1-オキソ-2-プロペン-1-イル)オキシ]エチル]アミン]カルボニル]オキシ]メチルエステルは、ブロックイソシアナト基の解離率:40質量%であり、安息香酸-2-[[[[2-[(2-メチル-1-オキシ-2-プロペン-1-イル)オキシ]エチル]アミン]カルボニル]オキシ]メチルエステルは、ブロックイソシアナト基の解離率:75質量%であり、2-プロペン酸-2-メチル-2-[[(3,5-ジメチルフェノキシ)カルボニル]アミン]エチルエステルは、ブロックイソシアナト基の解離率:28質量%である。
<感光性樹脂組成物(顔料タイプ)の調製>
直径0.5mmのジルコニアビーズ200質量部を充填したステンレス製容器に、C.Iピグメントグリーン36(着色剤)を100質量部、プロピレングリコールモノメチルエーテルアセテートを44.98質量部、分散剤(ビッグケミー・ジャパン株式会社製Disperbyk-161)を25質量部投入して、ペイントシェーカーで2時間混合して分散させることにより、緑色顔料分散液を調製した。
この緑色顔料分散液を、表3に示すその他の配合成分(即ち、重合体組成物、反応性希釈剤、光重合開始剤及び溶剤)と混合して感光性樹脂組成物を調製した。それぞれの成分の配合量は、表3に示すとおりである。なお、実施例13~24の感光性樹脂組成物は、実施例1~12(試料No.1~12)の重合体組成物それぞれを用いて調製し、比較例4~6の感光性樹脂組成物は、比較例1~3(試料No.13~15)の重合体組成物それぞれを用いて調製した。また、重合体組成物の量は共重合体反応終了時に含まれる溶剤を含み、各試料に含まれる溶剤の量も、配合成分としての溶剤の中に合算されている。
(1)アルカリ現像性
実施例13~24及び比較例4~6の感光性樹脂組成物それぞれを、5cm角のガラス基板(無アルカリガラス基板)上に、露光後の厚さが2.5μmとなるようにスピンコートした後、90℃で3分間加熱することで溶剤を揮発させた。次に、塗布膜から100μmの距離に所定のパターンのフォトマスクを配置し、このフォトマスクを介して塗布膜を露光(露光量:150mJ/cm2)し、露光部分を光硬化させた。次に、0.1質量%の炭酸ナトリウムを含む水溶液を23℃の温度及び0.3MPaの圧力でスプレーすることによって未露光部分を溶解して現像した後、100℃で20分間ベーキングすることで所定のパターンを形成した。アルカリ現像後の残渣は、アルカリ現像後のパターンを、(株)日立ハイテクノロジーズ製電子顕微鏡S-3400を用いて観察することにより確認した。この評価の基準は以下の通りである。
○:残渣なし
×:残渣あり
アルカリ現像性の評価結果を表4に示す。
5cm角のガラス基板(無アルカリガラス基板)上に、実施例13~24及び比較例4~6の感光性樹脂組成物それぞれを、ベーキング後の厚さが2.5μmとなるようにスピンコートした後、90℃で3分間加熱して溶剤を揮発させた。次に、塗布膜に波長365nmの光を露光し、露光部分を光硬化させたのち、ベーキング温度100℃の乾燥器中に20分間放置して硬化塗膜を作製した。容量500mLの蓋付きガラス瓶に200mLのプロピレングリコールモノメチルエーテルアセテートを入れ、80℃の条件下に静置した。その中に上記の硬化塗膜付き試験片を浸漬した後、80℃に維持した状態で、5分静置した。試験片をプロピレングリコールモノメチルエーテルアセテートへ浸漬させる前後の色変化(ΔE*ab)を分光光度計UV-1650PC(株式会社島津製作所製)にて測定した。ΔE*abの測定結果を表4に示す。ΔE*abが1.5以下であれば耐溶剤性に優れているといえる。
実施例1~12及び比較例1~3の共重合体を、ガラス容器に等量ずつ計り取り、ほこりなどが入らないようにアルミニウム箔で口を閉じた。次に、これらのサンプルをそれぞれ23℃に保った恒温器の中に静置し、サンプルの1ヶ月後の重量平均分子量(Mw)を測定した。1ヶ月後のMwの変化率を表5に示す。1ヶ月後のMwの変化率が20%以内であれば、共重合体の保存安定性が優れているといえる。
Claims (25)
- ブロックイソシアナト基を有する構成単位(a)、酸基を有する構成単位(b)及びエポキシ基を有する構成単位(c)を含有することを特徴とする共重合体(A)。
- 前記ブロックイソシアナト基を有する構成単位(a)が、ブロックイソシアナト基含有(メタ)アクリレート由来の構成単位であり、前記ブロックイソシアナト基含有(メタ)アクリレートのブロックイソシアナト基の解離率が100℃で30分加熱した際、5~99質量%である請求項1に記載の共重合体。
- 前記ブロックイソシアナト基を有する構成単位(a)のブロック剤が、マロン酸ジエチル、3,5-ジメチルピラゾール、メチルエチルケトオキシム、2-ヒドロキシ安息香酸メチル、4-ヒドロキシ安息香酸メチル及び3,5-キシレノールからなる群から選択される1種以上である請求項1又は2に記載の共重合体。
- 前記酸基を有する構成単位(b)が、不飽和カルボン酸由来の構成単位である請求項1~3のいずれか一項に記載の共重合体。
- 前記エポキシ基を有する構成単位(c)が、エポキシ基含有(メタ)アクリレート由来の構成単位である請求項1~4のいずれか一項に記載の共重合体。
- 前記共重合体(A)が、前記ブロックイソシアナト基を有する構成単位(a)を1~60モル%、前記酸基を有する構成単位(b)を5~65モル%及び前記エポキシ基を有する構成単位(c)を5~65モル%含有する請求項1~5のいずれか一項に記載の共重合体。
- 前記共重合体(A)における前記ブロックイソシアナト基を有する構成単位(a)と前記エポキシを有する構成単位(c)とのモル比率が、10:90~75:25である請求項1~6のいずれか一項に記載の共重合体。
- 前記共重合体(A)が、メタクリル酸2-(3,5-ジメチルピラゾール-1-イル)カルボニルアミノエチル、メタクリル酸2-[O-(1’-メチルプロピリデンアミノ)カルボキシアミノ]エチル、マロン酸-2-[[[2-メチル-1-オキソ-2-プロペニル]オキシ]エチル]アミノ]カルボニル]-1,3ジエチルエステル、安息香酸-4-[[[[2-[(2-メチル-1-オキソ-2-プロペン-1-イル)オキシ]エチル]アミン]カルボニル]オキシ]メチルエステル、安息香酸-2-[[[[2-[(2-メチル-1-オキシ-2-プロペン-1-イル)オキシ]エチル]アミン]カルボニル]オキシ]メチルエステル及び2-プロペン酸-2-メチル-2-[[(3,5-ジメチルフェノキシ)カルボニル]アミン]エチルエステルからなる群から選択される少なくとも1種由来の構成単位(a)と、(メタ)アクリル酸由来の構成単位(b)と、グリシジルメタクリレート由来の構成単位(c)と、ジシクロペンタニルメタクリレート及びメチル(メタ)アクリレートからなる群から選択される少なくとも1種由来の構成単位(e)とを含有する請求項1~7のいずれか一項に記載の共重合体。
- 前記共重合体(A)が、水酸基を有する構成単位(d)をさらに含有する請求項1~8のいずれか一項に記載の共重合体。
- 前記共重合体(A)が、メタクリル酸2-(3,5-ジメチルピラゾール-1-イル)カルボニルアミノエチル、メタクリル酸2-[O-(1’-メチルプロピリデンアミノ)カルボキシアミノ]エチル、マロン酸-2-[[[2-メチル-1-オキソ-2-プロペニル]オキシ]エチル]アミノ]カルボニル]-1,3ジエチルエステル、安息香酸-4-[[[[2-[(2-メチル-1-オキソ-2-プロペン-1-イル)オキシ]エチル]アミン]カルボニル]オキシ]メチルエステル、安息香酸-2-[[[[2-[(2-メチル-1-オキシ-2-プロペン-1-イル)オキシ]エチル]アミン]カルボニル]オキシ]メチルエステル及び2-プロペン酸-2-メチル-2-[[(3,5-ジメチルフェノキシ)カルボニル]アミン]エチルエステルからなる群から選択される少なくとも1種由来の構成単位(a)と、(メタ)アクリル酸由来の構成単位(b)と、グリシジル(メタ)アクリレート由来の構成単位(c)と、2-ヒドロキシエチルメタクリレート由来の構成単位(d)と、ジシクロペンタニル(メタ)アクリレート及びメチル(メタ)アクリレートからなる群から選択される少なくとも1種由来の構成単位(e)とを含有する請求項9に記載の共重合体。
- 前記共重合体(A)が、メタクリル酸2-[O-(1’-メチルプロピリデンアミノ)カルボキシアミノ]エチル由来の構成単位(a)と、(メタ)アクリル酸由来の構成単位(b)と、グリシジル(メタ)アクリレート由来の構成単位(c)と、ジシクロペンタニル(メタ)アクリレート由来の構成単位(e)とを含有する請求項8に記載の共重合体。
- 前記共重合体(A)が、メタクリル酸2-(3,5-ジメチルピラゾール-1-イル)カルボニルアミノエチル由来の構成単位(a)と、(メタ)アクリル酸由来の構成単位(b)と、グリシジル(メタ)アクリレート由来の構成単位(c)と、ジシクロペンタニル(メタ)アクリレート由来の構成単位(e)とを含有する請求項8に記載の共重合体。
- 前記共重合体(A)が、メタクリル酸2-(3,5-ジメチルピラゾール-1-イル)カルボニルアミノエチル由来の構成単位(a)と、(メタ)アクリル酸由来の構成単位(b)と、グリシジル(メタ)アクリレート由来の構成単位(c)と、2-ヒドロキシエチルメタクリレート由来の構成単位(d)と、ジシクロペンタニル(メタ)アクリレート由来の構成単位(e)とを含有する請求項10に記載の共重合体。
- 前記共重合体(A)が、マロン酸-2-[[[2-メチル-1-オキソ-2-プロペニル]オキシ]エチル]アミノ]カルボニル]-1,3ジエチルエステル由来の構成単位(a)と、(メタ)アクリル酸由来の構成単位(b)と、グリシジル(メタ)アクリレート由来の構成単位(c)と、ジシクロペンタニル(メタ)アクリレート由来の構成単位(e)とを含有する請求項8に記載の共重合体。
- 前記共重合体(A)が、水酸基を有する構成単位(d)及び前記構成単位(a)~(d)以外の構成単位(e)をさらに含有し、
前記共重合体(A)が、前記ブロックイソシアナト基を有する構成単位(a)を1~40モル%、前記酸基を有する構成単位(b)を1~60モル%、前記エポキシ基を有する構成単位(c)を1~70モル%、前記水酸基を有する構成単位(d)を0モル%超~50モル%及び前記構成単位(e)を0モル%超~80モル%含有する請求項1~5のいずれか一項に記載の共重合体。 - 前記共重合体(A)が、水酸基を有する構成単位(d)及び前記構成単位(a)~(d)以外の構成単位(e)をさらに含有し、
前記共重合体(A)が、前記ブロックイソシアナト基を有する構成単位(a)を3~20モル%、前記酸基を有する構成単位(b)を20~50モル%、前記エポキシ基を有する構成単位(c)を20~40モル%、前記水酸基を有する構成単位(d)を0モル%超~20モル%及び前記構成単位(e)を20~40モル%含有する請求項1~5のいずれか一項に記載の共重合体。 - 請求項1~16のいずれか一項に記載の共重合体(A)と、溶剤(B)及び反応性希釈剤(C)の少なくとも一方とを含有することを特徴とする重合体組成物。
- 請求項1~16のいずれか一項に記載の共重合体(A)、溶剤(B)、反応性希釈剤(C)及び光重合開始剤(D)を含有することを特徴とする感光性樹脂組成物。
- 請求項1~16のいずれか一項に記載の共重合体(A)、溶剤(B)、反応性希釈剤(C)、光重合開始剤(D)及び着色剤(E)を含有することを特徴とするカラーフィルター用感光性樹脂組成物。
- 前記共重合体(A)と前記反応性希釈剤(C)との合計量100質量部に対して、前記共重合体(A)が10~100質量部、前記溶剤(B)が30~1,000質量部、前記反応性希釈剤(C)が0質量部超~90質量部、前記光重合開始剤(D)が0.1~30質量部、前記着色剤(E)が3~80質量部含有される請求項19に記載のカラーフィルター用感光性樹脂組成物。
- 前記溶剤(B)が、水酸基含有有機溶剤を含む請求項19又は20に記載のカラーフィルター用感光性樹脂組成物。
- 前記着色剤(E)が、顔料を含む請求項19~21のいずれか一項に記載のカラーフィルター用感光性樹脂組成物。
- 請求項19~22のいずれか一項に記載のカラーフィルター用感光性樹脂組成物の硬化物からなる着色パターンを有することを特徴とするカラーフィルター。
- 請求項23に記載のカラーフィルターを具備することを特徴とする画像表示素子。
- 請求項19~22のいずれか一項に記載のカラーフィルター用感光性樹脂組成物を基板に塗布し、露光し、アルカリ現像した後、160℃以下の温度でベーキングして着色パターンを形成する工程を含むことを特徴とするカラーフィルターの製造方法。
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WO2023120364A1 (ja) * | 2021-12-21 | 2023-06-29 | 株式会社レゾナック | 重合体エマルジョンおよびその保管方法、該重合体エマルジョンを用いた二液系熱硬化性樹脂組成物、樹脂硬化膜、ならびに塗膜 |
WO2024142675A1 (ja) * | 2022-12-28 | 2024-07-04 | 富士フイルム株式会社 | 感光性組成物、硬化膜、感光性転写材料、膜、及び積層体 |
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JP7539010B2 (ja) | 2019-12-20 | 2024-08-23 | 株式会社レゾナック | 着色組成物、着色硬化膜及びその製造方法、カラーフィルタ、表示素子、受光素子、並びに硬化性組成物 |
WO2023120364A1 (ja) * | 2021-12-21 | 2023-06-29 | 株式会社レゾナック | 重合体エマルジョンおよびその保管方法、該重合体エマルジョンを用いた二液系熱硬化性樹脂組成物、樹脂硬化膜、ならびに塗膜 |
WO2024142675A1 (ja) * | 2022-12-28 | 2024-07-04 | 富士フイルム株式会社 | 感光性組成物、硬化膜、感光性転写材料、膜、及び積層体 |
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KR20210122896A (ko) | 2021-10-12 |
CN115160483A (zh) | 2022-10-11 |
JPWO2019026546A1 (ja) | 2020-06-18 |
KR20230014841A (ko) | 2023-01-30 |
TW201910367A (zh) | 2019-03-16 |
CN115160483B (zh) | 2024-02-13 |
JP7189875B2 (ja) | 2022-12-14 |
TW202317651A (zh) | 2023-05-01 |
TWI836851B (zh) | 2024-03-21 |
JP2023021219A (ja) | 2023-02-10 |
KR102489436B1 (ko) | 2023-01-17 |
KR102685726B1 (ko) | 2024-07-16 |
KR20200022473A (ko) | 2020-03-03 |
TWI836850B (zh) | 2024-03-21 |
TW202323331A (zh) | 2023-06-16 |
TWI791563B (zh) | 2023-02-11 |
JP7364020B2 (ja) | 2023-10-18 |
CN110997740A (zh) | 2020-04-10 |
CN110997740B (zh) | 2023-01-17 |
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