KR20090004610A - Inkjet ink for color filter, and color filter using the same - Google Patents

Abstract

An inkjet ink for a color filter is provided to ensure excellent hardening property and adhesion to a substrate and to spread the ink with wettability to every corner of an ink layer formation area. An inkjet ink for a color filter comprise (A) a compound cured by at least one of an acid and radical, (B) pigment, (C) a compound having a substrate-adhering group within molecule and (D) solvent. The compound(C) having a substrate-adhering group within molecule has a structure of the formula (I).

Description

Inkjet ink for color filters and color filter using the same {INKJET INK FOR COLOR FILTER, AND COLOR FILTER USING THE SAME}

The present invention relates to an inkjet ink for color filters used for forming a colored cured layer of a predetermined pattern represented by a pixel portion (coloring layer) of a color filter, and a color filter produced using the inkjet ink.

In recent years, with the development of personal computers, especially with the development of laptops, the demand for liquid crystal displays, especially color liquid crystal displays, tends to increase. However, since this color liquid crystal display is expensive, there is an increasing demand for cost reduction and productivity improvement, and in particular, there is a high demand for cost reduction and productivity improvement for a color filter having a high cost. In such a color filter, usually, the coloring pattern of three primary colors of red (R), green (G), and blue (B) is provided, and the electrode corresponding to each pixel of R, G, and B is turned ON and OFF. By doing so, the liquid crystal acts as a shutter, and light passes through the pixels of R, G, and B, and color display is performed.

As a manufacturing method of the color filter conventionally performed, the dyeing method is mentioned, for example. This dyeing method firstly forms a water-soluble polymer material, which is a material for dyeing, on a glass substrate, is patterned into a desired shape by a photolithography step, and then the obtained pattern is immersed in a dye bath to obtain a colored pattern. By repeating this three times, R, G, and B color filter layers are formed. In addition, another method is a pigment dispersion method. This method forms a photosensitive resin layer which disperse | distributed the pigment on a board | substrate first, and pattern this, and obtains a monochromatic pattern. By repeating this process three more times, the color filter layers of R, G, and B are formed. As another method, the electrodeposition method, the method of disperse | distributing a pigment to thermosetting resin, performing R, G, and B three times, and then thermosetting resin etc. are mentioned. However, either method requires the same process to be repeated three times in order to color the three colors of R, G, and B, resulting in a problem of high cost or a problem of lowering the yield since the same process is repeated.

As a manufacturing method of the color filter which solved these problems, the method of forming a colored layer (pixel part) by spraying ink on the surface of a board | substrate by the inkjet method is proposed (for example, refer Unexamined-Japanese-Patent No. 59-75205). ). In order to form a pixel by spraying ink in accordance with an accurate pattern by an inkjet method, the linearity and stability at the time of ejecting ink from a discharge head are calculated | required. However, if the evaporation rate of the ink is too fast, the viscosity of the ink rapidly increases at the tip of the nozzle of the ejection head, causing the flight of ink droplets to fly, or if the ink is intermittently discharged over time, the ink may become clogged and cannot be discharged again. do.

In addition, when the coloring ink is sprayed onto the substrate by the inkjet method, if the drying speed is too fast, the surface of the ink layer solidifies in a wave form or oblique state immediately after the ejection, resulting in insufficient leveling. On the other hand, if the drying speed is too slow, it becomes difficult to dry completely by the heating process, or the efficiency is poor even if drying is possible. Therefore, in consideration of the ejection performance, it is good to use an ink which is difficult to dry, but in order to completely dry the ink layer, appropriate drying property is also required. Pigments are often used as the colorant of the color filter. If the pigment dispersibility of the ink for the color filter is poor, clogging occurs at the nozzle portion of the discharge head by aggregation of the pigment particles. Therefore, when a pigment is used as the colorant, the pigment dispersibility also affects the ejection performance of the ink.

As a technique of suppressing clogging, the resin composition for inkjet type color filters which contains a coloring agent, binder resin, and a solvent with a boiling point of 250 degreeC or more at normal pressure is disclosed (for example, refer Unexamined-Japanese-Patent No. 2000-310706). . Since the resin composition uses a solvent having a high boiling point, the ink is hard to dry at the tip of the nozzle of the discharge head and does not easily cause clogging. However, after the ink is discharged onto the substrate, in the process of drying the ink layer, a wetting agent or a high boiling point solvent that is difficult to dry remains until the end, making it difficult to completely dry, which causes problems in productivity.

Receiving such a problem, the present inventors are excellent in the straightness and stability when discharged from a head, and a pattern with high uniformity is obtained, and an inkjet ink for color filters which can be dried efficiently, is a binder component, a pigment, and A color filter ink jet ink comprising a solvent and containing a solvent component having a boiling point of 180 deg. C to 260 deg. C and a vapor component of 0.5 mmHg or less at a normal temperature in a proportion of 90% by weight or more relative to the total amount of the solvent. (See Japanese Patent Laid-Open No. 2002-201387).

This ink solves the problem of ejection property and drying speed. However, as the technical examination on the production of the color filter using the inkjet method proceeds, it is required to realize a color filter with better image quality.

That is, with respect to the inkjet substrate, it is possible to stably lead to the gap of the black matrix corresponding to each pixel, and to spread uniformly in the frame of the black matrix after landing on the substrate. Inks excellent in affinity to substrates, such as curing, curing shrinkage at the time of drying after extraction is suppressed, and inks which can be cured efficiently while maintaining a stable and reproducible shape in a partitioned region in the black matrix, The adhesiveness to a board | substrate improves and, as a result, after being hardened | cured by heating and exposure, the coloring which does not have a flaw or peeling from a board | substrate also in the contact with the solvent at the time of apply | coating a protective film, or the handling at the time of use. There is a need for inkjet inks for color filters that can form patterns.

This invention is made | formed in view of the said real condition, The 1st objective is that the ink droplet discharged from the head and landed spreads to every corner of the whole ink layer formation area, and it is excellent in the flatness of the image formed by inkjet, An ink jet ink for color filters excellent in adhesion to a substrate is provided.

Still another object of the present invention is to provide a color filter having a pixel portion having a high curing property, excellent adhesion to a substrate, and high uniformity without color drop, obtained by using the inkjet ink for color filters of the present invention. There is.

MEANS TO SOLVE THE PROBLEM As a result of earnestly researching, it discovered that the said subject can be solved by using the specific compound excellent in board | substrate adhesiveness, and came to complete this invention. That is, the means for solving the said subject is as follows.

<1> At least one of (A) an acid and a radical cured by a compound, (B) pigment, (C) a compound which has a board | substrate adhesive group in a molecule, and (D) solvent for color filters Inkjet ink.

<2> (E) The inkjet ink for color filters as described in <1> containing the compound which generate | occur | produces at least one of an acid and a radical.

The inkjet ink for color filters as described in <1> or <2> containing a <3> (F) binder.

The inkjet ink for color filters in any one of <1>-<3> in which the compound which has a board | substrate adhesive group in a <4> above-mentioned (C) molecule | numerator is represented with the following general formula (I).

In general formula (I), L represents a monovalent organic group, R <^1> and R <^2> respectively independently represent a hydrocarbon group, n represents the integer of 1-3.

The inkjet ink for color filters in any one of <1>-<3> with which the compound which has a board | substrate adhesive group in a <5> above-mentioned (C) molecule | numerator is represented by following General formula (II).

In general formula (II), L 'represents the monovalent organic group containing a hydrophilic site | part, R <^1> and R <^2> respectively independently represent a hydrocarbon group, n represents the integer of 1-3.

The inkjet ink for color filters in any one of <1>-<3> with which the compound which has a board | substrate adhesive group in a <6> above-mentioned (C) molecule | numerator is represented with the following general formula (A).

In general formula (A), M represents the site | part which has an ethylenically unsaturated double bond, L represents the n + monovalent organic coupling group, X represents the adhesive group to a hard material, n represents the integer of 1-5 and m represents the integer of 1-3.

The color filter which has a coloring pattern formed on the <7> support body by the inkjet ink for color filters in any one of <1>-<6>.

According to the present invention, the ink droplets ejected from the head and landed have moderate wetting spreadability, can spread to every corner of the entire ink layer formation region, and can provide ink jet ink for color filters excellent in curability and adhesion to a substrate. .

Further, by using the inkjet ink for color filters of the present invention, it is possible to provide a color filter having a pixel portion having good curing property, excellent adhesion to a substrate, and high uniformity without color dropping out.

Hereinafter, in this specification, "light" includes electromagnetic waves and visible radiation of visible and invisible region wavelengths, and the radiation includes, for example, microwaves and electron beams. That is, "light" refers specifically to "electromagnetic waves and an electron beam with a wavelength of 5 micrometers or less".

In addition, in this invention, when describing as "(meth) acryl", it points with either or both of an acryl and methacryl, and similarly, "(meth) acrylate" means an acrylate and a methacrylate, "(meth) Acryloyl "means any or both of acryloyl and methacryloyl, respectively.

The present invention is described in detail below.

The inkjet ink for color filters of this invention contains the compound which hardens with at least one of (A) acid and a radical, (B) pigment, the compound which has a board | substrate adhesive group in (C) molecule, and (D) solvent These components will be described sequentially.

First, the compound which has a board | substrate adhesive group in the (C) molecule which is the characteristic component of this invention is described.

<(C) Compound Having Substrate Adhesive Group in Molecule>

"Compound which has a board | substrate adhesive group in a molecule (henceforth an adhesive agent)" used by this invention does not have a restriction | limiting in particular if it has a functional group excellent in adhesiveness with a board | substrate in a molecule | numerator, and is soluble in an inkjet ink.

The substrate adhesive group is a group capable of forming any interaction selected from the group consisting of covalent bonds, ionic bonds, hydrogen bonds, polar interactions, and van der Waals interactions with the hard material surface used for the substrate. Specifically, a group consisting of an acid group, an acid ester group, an onium salt, an acid metal salt, a substituent which generates a silanol group by hydrolysis, an onium group, a phenolic hydroxyl group, an amphoteric ionic group, and a chelate group The group which has 1 or more types of partial structure chosen from is mentioned.

The inkjet ink of the present invention is used for forming a color pattern of a color filter. Examples of the color filter substrate include inorganic materials such as glass and silicon substrates, or cellulose acetate, cellulose triacetate, cellulose propionate, cellulose butyrate, cellulose butyrate, Organic resin materials such as nitrocellulose, polyethylene terephthalate, polyethylene, polystyrene, polypropylene, polycarbonate, polyvinyl acetal, and the like. Among these, what is chosen from a transparent hard material or a silicon substrate is mentioned suitably, A glass substrate or a silicon substrate is especially preferable.

Examples of preferred adhesive groups selected in consideration of correlation with these substrates include, for example, sulfonic acid groups, phosphonic acid groups and ester groups or salts thereof, carboxyl groups and salts thereof, ammonium groups, pyridinium groups, acetylacetone groups, and valences. The functional group selected from the group which consists of a substituent which produces | generates a silanol group by decomposition is mentioned, Especially, the substituent which produces | generates a silanol group by hydrolysis, a phosphonic acid group, and its ester group are preferable.

As a compound which can be used as (C) adhesive agent in this invention, the compound which has a silyl group in a molecule | numerator is mentioned, More specifically, the organosilane compound represented by the following general formula (I) is mentioned.

(In General Formula (I), L represents a monovalent organic group, and R ¹ and R ² each independently represent a hydrocarbon group. N represents an integer of 1 to 3.)

In general formula (I), although L is a monovalent organic group, it is preferable that it is an organic group which does not have ethylenic double bond in the structure from a viewpoint of stability with time.

General formula (I), from the viewpoint of the curability at the time of photocuring the curable composition of the present invention, and the removability when removing other than the cured portion by a process such as development, more preferably General formula (II) The silane compound which has a monovalent organic group containing the organic silane compound, ie, a hydrophilic site | part, represented by is preferable.

(In general formula (II), L 'represents the monovalent organic group containing a hydrophilic site | part, R <^1> and R <^2> respectively independently represent a hydrocarbon group and n represents the integer of 1-3.)

Description of the hydrophilic site

Here, the hydrophilic site contained in the monovalent organic group L 'represents a polar atomic group having a high affinity with a high polar substance represented by water, for example, atoms such as oxygen, nitrogen, sulfur, phosphorus, etc. Include. As such a hydrophilic site, the site | part which can carry out dipole-dipole interaction, dipole-ion interaction, ionic bond, hydrogen bond, etc. with the high polar material represented by water is mentioned.

Examples of hydrophilic sites include a polar group or a dissociation group containing atoms such as oxygen, nitrogen, and sulfur, a hydrogen bond donor, a hydrogen bond acceptor, and a plurality of lone pairs of electrons, and they are collected in a hydrophilic field. The site | part which can provide these etc. are mentioned, Specifically, For example, hydrophilic groups, such as a hydroxyl group, an amino group, a carbonyl group, a thiocarbonyl group, a mercapto group, a carbamoyl group, a carbamoyloxy group, and a carbamoylamino group, sulfone Amide moiety, urethane moiety, thiourethane moiety, amide moiety, ester moiety, thioether moiety, urea moiety, thiourea moiety, oxycarbonyloxy moiety, ammonium group, secondary amine moiety, tertiary amine moiety,-(CH ₂ CH ₂ O) _a - polyethylene oxy region (where, represented by a, may be mentioned hydrophilic site such as a partial structure represented by the integer equal to or greater than 2), and the following structural formula.

(In the structural formula, M, M ¹ , M ² each independently represent a hydrogen atom, a monovalent metal atom, or NR ₄ ⁺ , where R represents a hydrocarbon chain having 1 to 4 carbon atoms.)

Among such hydrophilic sites, from the standpoint of stability over time, a structure in which Michael addition reaction is not caused to the ethylenic double bond of the compound containing an ethylenically unsaturated double bond which is a compound included in component (A) described later. More preferably, from such a viewpoint, a hydroxyl group, a carbonyl group, a thiocarbonyl group, a carbamoyl group, a carbamoyloxy group, a carbamoylamino group, a urethane moiety, a thiourethane moiety, an amide moiety, an ester moiety, a thioether oxy carbonyloxy portion, an ammonium group, a tertiary amine sites, site, urea region, thiourea region, - (CH ₂ CH ₂ O) _a - polyethylene oxy region (where, a is an integer equal to or greater than 2) represented by, and to The partial structure represented by structural formula is preferable.

In addition, when -Si (OR ¹ ) _n R ² _{3-n which} is a partial structure of the general formula (II) is subjected to a hydrolysis reaction, the curable composition becomes a factor such as thickening with time. In view of the difficulty in inducing such a hydrolysis reaction, among the hydrophilic sites, a hydroxyl group, a carbonyl group, a thiocarbonyl group, a urethane site, a thiourethane site, an amide site, an ester site, a thioether site, a carbamoyl group, and a carbamoyl jade The time period, the carbamoylamino group, the urea moiety, the thiourea moiety, the tertiary amine moiety, and the polyethyleneoxy moiety represented by-(CH ₂ CH ₂ O) _a -are preferred, but a is a hydroxyl group, urethane parts, thiourethane part, an amide site and a sulfonamide portion, an ester portion, the urea portion, thiourea region, tertiary amine _{sites, - (CH 2 CH 2 O} ) a - polyethylene oxy portion represented by (where, a is An integer of 2 or greater) are more preferred, and a hydroxy group, a urethane portion, thiourethane site, Urea region, tertiary amine sites, - (CH ₂ CH ₂ O) _a - are polyethylene oxy region (where marked with, a is an integer of 2 or more Is most preferred.

(C) It is preferable to have at least one said hydrophilic site | part in the molecule | numerator of the organosilane compound which can be used as an adhesive agent, and it is more preferable to have two or more. When a plurality of hydrophilic moieties are present in the molecule, they may be the same or different.

In said general formula (I) and general formula (II), R <^1> and R <^2> respectively independently has a C1-C6 hydrocarbon group, and this hydrocarbon group may have a substituent. Among these, a linear, branched, or cyclic alkyl group is preferable. Preferable examples of R ¹ and R ² include methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, pentyl group, hexyl group, cyclohexyl group, and phenyl group, and methyl group and ethyl group are particularly preferred. .

n represents the integer of 1-3, Preferably it is 3 from a viewpoint of stability.

As a more preferable example of the specific organosilane compound suitable as said (C) adhesive agent, the compound represented by the following general formula (III) or general formula (IV) is mentioned.

(In General Formula (III), R ¹ and R ² each independently represent a hydrocarbon group having 1 to 6 carbon atoms. These R ¹ and R ² are the same as those in General Formula (I) or (II), and are preferable. The same is true.)

R <^3> represents a C1-C12 hydrocarbon chain. In addition, R ³ may have a ring structure and an unsaturated bond in the chain structure. In addition, this hydrocarbon group may have a substituent and may have a monovalent hydrophilic site | part in the structure. The hydrophilic site here refers to what was illustrated as monovalent hydrophilic site among the thing demonstrated by said L ', and its preferable example is also the same.

X represents a monovalent hydrophilic site. The hydrophilic site here refers to what was illustrated as monovalent hydrophilic site among the thing demonstrated by said L ', and its preferable example is also the same.

n represents the integer of 1-3 and it is 3 from a stability viewpoint.

(In the general formula (IV), R ¹ and R ² each independently represent a hydrocarbon group having 1 to 6 carbon atoms. These R ¹ and R ² are the same as those in general formula (I) or (II). , The same is the preferred example.)

R ⁴ , R ⁵ , R ⁶ and R ⁷ each independently represent a single bond or a hydrocarbon chain having 1 to 12 carbon atoms. However, when R <^4> , R <^5> , R <^6> and R <^7> represent a hydrocarbon chain, you may have ring structure and an unsaturated bond in the chain structure. These hydrocarbon chains may have a substituent and may have a monovalent hydrophilic site as such a substituent.

X 'represents a monovalent substituent which may contain a hydrogen atom or a hydrophilic site | part. Y ¹ and Y ² each independently represent a divalent hydrophilic portion, and Z represents a divalent or trivalent hydrophilic portion depending on the q value. That is, when q is 1, Z represents a divalent hydrophilic site, and when q is 2, Z represents a trivalent hydrophilic site. As a bivalent or trivalent hydrophilic site | part, it is the same as what was illustrated as a bivalent or trivalent hydrophilic site among the hydrophilic sites described in the description of said General formula (I) or (II).

p is an integer of 0-20, q is 1 or 2, and r is an integer of 1-3.

n represents the integer of 1-3.

When R ³ in General Formula (III) or R ⁴ , R ⁵ , R ⁶ and R ⁷ in General Formula (IV) represent a hydrocarbon chain, the hydrocarbon chain may be a linear, branched, or alkyl group having a cyclic structure. A chain and an aromatic ring are preferable. The hydrocarbon chain may have a substituent, and as the substituent which can be introduced into the hydrocarbon chain, for example, an aliphatic group, aromatic group, heterocyclic group, halogen atom, cyano group, nitro group, aliphatic oxy group, aromatic oxy group, hetero A cyclyl group and a hydrophilic group are mentioned. Especially, a C1-C12 aliphatic group, an aromatic group, a heterocyclic group, a chlorine atom, a cyano group, and a hydrophilic group are preferable. Preferred examples of the aliphatic group having 1 to 12 carbon atoms include methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, pentyl group, hexyl group, cyclohexyl group, octyl group, and the like. Ethyl group is more preferable. As an example of an aromatic group, a phenyl group, a naphthyl group, an anthracene group is mentioned, A phenyl group is more preferable. Examples of the hetero ring include a morpholino group, tetrahydrofurfuryl group, pyrrolyl group, furyl group, thiophenyl group, benzopyrrolyl group, benzofuryl group, benzothiophenyl group, pyrazolyl group, isoxazolyl group, isothiazolyl group, and Zolyl group, benzoisoxazolyl group, benzoisothiazolyl group, imidazolyl group, oxazolyl group, thiazolyl group, benzoimidazolyl group, benzooxazolyl group, benzothiazolyl group, pyridyl group, quinolinyl group Isoquinolinyl group, pyridazinyl group, pyrimidinyl group, pyrazinyl group, cinnaolinyl group, phthalazinyl group, quinazolinyl group, quinoxalinyl group, acridinyl group, phenantridinyl group, phthalazinyl group, Carbazolyl group, carbolinyl group, furinyl group, triazolyl group, oxadiazolyl group, thiadiazolyl group are mentioned, A morpholino group, tetrahydrofurfuryl group, and pyridyl group are more preferable.

When R <^3> in the said General formula (III) or R <^4> , R <^5> , R <^6> and R <^7> in general formula (IV) is a bivalent hydrocarbon group, as a monovalent hydrophilic site which you may have, said general formula (I) Or the same as the monovalent hydrophilic moiety described in the section of the hydrophilic moiety in (II). Specifically, for example, a hydroxy group, an amino group, a mercapto group, an ammonium group, a carbamoyl group, a carbamoyloxy group, and a carbohydrate. A barmoylamino group and the substituent represented by the following structural formula are mentioned.

When X in the said general formula (III) or X 'in the said general formula (IV) is a monovalent hydrophilic site, the monovalent hydrophilic property described in the term of the hydrophilic site in the said general formula (I) or (II) is an example. The same thing as a site | part is mentioned, Specifically, a substituent represented by a hydroxyl group, an amino group, a mercapto group, an ammonium group, a carbamoyl group, a carbamoyloxy group, a carbamoylamino group, and the following structural formula is mentioned, for example. .

(In the structural formula, M, M ¹ , M ² each independently represent a hydrogen atom, a monovalent metal atom, or NR ₄ ⁺ , where R represents a hydrocarbon chain having 1 to 4 carbon atoms.)

When Y <^1> , Y <^2> , Z in said general formula (IV) is a divalent hydrophilic site, the thing same as the bivalent hydrophilic site described in the term of the hydrophilic site in said general formula (I) or (II) is the same. Specific examples thereof include, for example, a carbonyl group, a thiocarbonyl group, a urethane moiety, a thiourethane moiety, an amide moiety, an ester moiety, a thioether moiety, a sulfonamide moiety, a urea moiety, a thiourea moiety, and a secondary amine. polyethylene oxy portion represented by (where, a is an integer of 2 or greater), butyloxycarbonyl partial structure represented by the oxy portion, and the following structural formula, etc. - region, - (CH ₂ CH ₂ O) _a.

(In the structural formula, M ¹ represents a hydrogen atom, a monovalent metal atom, or NR ₄ ⁺ , where R represents a hydrocarbon chain having 1 to 4 carbon atoms.)

When Z in the said General formula (IV) is a trivalent hydrophilic site, the thing similar to the trivalent hydrophilic site described in the term of the hydrophilic site in the said General formula (I) or (II) is mentioned specifically, And tertiary amine moieties, urea moieties, thiourea moieties and partial structures represented by the following structural formulas.

R ³ is preferably a methylene chain having 1 to 5 carbon atoms or a substituent, and a methylene chain which may contain an oxygen atom in the chain, and more preferably a methylene chain having 3 carbon atoms.

Although the specific example of the organosilane compound which can be used suitably as (C) adhesive agent in this invention is shown below, it is not limited to this.

As an organosilane compound represented by General formula (I), (beta)-(3, 4- epoxycyclohexyl) ethyl trimethoxysilane, (gamma)-glycidoxy propyl trimethoxysilane, and (gamma)-glycidoxy propyl, for example. Triethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, vinyltriacetoxysilane, γ-chloropropyltrimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, γ-chloropropylmethyldimeth Methoxysilane, trimethylchlorosilane, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, bisallyltrimethoxysilane, tetraethoxysilane, bis (trimethoxysilyl) hexane, phenyltrimethoxysilane Etc. can be mentioned.

Below, the structure of the organosilane compound [Example compound (1)-(62)] represented by general formula (II), (III), or (IV) which is a more preferable example is shown.

The specific organic silane compound which can be used suitably as (C) adhesive agent of this invention can be synthesize | combined by the following method, for example.

Below, the said specific compound (22) is given as an example and the specific synthesis method is shown. Other specific organosilane compounds which can be used in the present invention can also be synthesized in the same scheme by selecting starting materials, catalysts and the like. In addition, a synthesis method is not limited to the following method. After dissolving 100 ml of acetonitrile in 50 g (0.373 mol) of diethylene glycol monoethyl ether, 0.50 g of neostane U-600 (bismuth-based catalyst manufactured by Nitto Kasei) and 92.2 g of triethoxy (3-isocyanatepropyl) silane ( 0.373 mol) was added and stirred at 50 ° C for 4 hours. After completion | finish of reaction, after cooling the reaction liquid to room temperature, 100 ml of n-hexanes were added and wash | cleaned 3 times, and the lower layer was fractionated. The solvent was distilled off and 142 g (0.373 mol (yield: 100%)) of compound (22) was obtained.

As a more preferable aspect of (C) adhesive agent in this invention, the curable compound which has an adhesive group with a board | substrate in a molecule | numerator is mentioned. Such a compound has an adhesive group to the said base material, has at least 1 ethylenically unsaturated bond, and forms the crosslinked structure by starting species, such as an acid and a radical, and hardens | cures by the polymerization reaction, or the compound And, preferably, compounds having two or more ethylenically unsaturated bonds in the molecule, more preferably three or more, even more preferably four or more, and most preferably five or more.

The curable compound having an adhesive group has a substituent capable of forming an ionic bond, a multipoint hydrogen bond, and a covalent bond in view of the strength of the interaction, and among these, an ammonium group, a phosphonic acid group and its ester group, and an alkoxysilyl group It is preferable to have a functional group selected from the group which consists of a group from a viewpoint of the developability of an unexposed part, and the film strength of an exposed part in addition to the viewpoint of the board | substrate adhesiveness derived from the intensity | strength of interaction with a board | substrate.

As a curable compound which has such an adhesive group, what is represented by the following general formula (A) is mentioned.

(In General Formula (A), M represents a moiety having an ethylenically unsaturated double bond, L represents an n + monovalent organic linking group, and X represents an adhesive group to a hard material. N represents an integer of 1 to 5). M represents an integer of 1 to 3.)

Preferable examples of the structure represented by M include esters of unsaturated carboxylic acids (for example, acrylic acid, methacrylic acid, itaconic acid, crotonic acid, isocrotonic acid, maleic acid, and the like) and amides. Moreover, addition reaction of unsaturated carboxylic acid ester or amides which have electrophilic substituents, such as an isocyanate group and an epoxy group, with monofunctional or polyfunctional alcohols, amines, and thiols, and a detachable substituent, such as a halogen group and a tosyloxy group The structure produced | generated by the substitution reaction of unsaturated carboxylic acid ester or amide which has a monofunctional or polyfunctional alcohol, amine, and thiol is mentioned. As another example, a compound group substituted with unsaturated phosphonic acid, styrene, vinyl ether, or the like may be used instead of the above unsaturated carboxylic acid. Especially, a (meth) acryloyl group, a styrene, and a vinyl ether structure are preferable, and the structure which has a (meth) acryloyl group is more preferable.

In the general formula (A), L represents an n + monovalent organic linking group determined by the number (n) of the partial structure having an ethylenically unsaturated double bond, in which the oxygen atom, nitrogen atom, sulfur atom or carbon number is present. It has a partial structure selected from the group which consists of a hydrocarbon ring structure, an aromatic ring, a heterocyclic ring, a urethane bond, a thiourethane bond, an ester bond, an amide bond, a urea bond, and a thiourea bond which consist of 3-10, These are independent, or It is n + 1-valent coupling group comprised combining multiple types.

Such a linking group may further have a substituent, and examples of the substituent that can be introduced into the linking group of L include, for example, an aliphatic group, an aromatic group, a heterocyclic group, a halogen atom, a hydroxyl group, a thiol group, a cyano group, a nitro group, an aliphatic oxy group, Aromatic oxy group, heterocyclic oxy group, aliphatic thio group, aromatic thio group, heterocyclic thio group, aliphatic sulfonamide group, aromatic sulfonamide group, heterocyclic sulfonamide group, acyl group, acyloxy group, acylamino group, aliphatic oxy Carbonyl group, aromatic oxycarbonyl group, heterocyclic oxycarbonyl group, aliphatic oxycarbonylamino group, aromatic oxycarbonylamino group, heterocyclic oxycarbonylamino group, aliphatic thiocarbonylamino group, aromatic thiocarbonylamino group, heterocyclic thiocarbonylamino group, aliphatic Aminocarbonylamino group, aromatic aminocarbonylamino group, heterocyclic sub Nocarbonylamino group, carbamoyl group, carbamoyloxy group, carbamoylamino group, aliphatic sulfonyl group, aromatic sulfonyl group, heterocyclic sulfonyl group, aliphatic oxyamino group, aromatic oxyamino group, heterocyclic oxyamino group, silyl group, aliphatic oxy Silyl group, silyloxy group, aliphatic oxycarbonyloxy group, aromatic oxycarbonyloxy group, heterocyclic oxycarbonyloxy group, sulfamoyloxy group, aliphatic sulfonyloxy group, aromatic sulfonyloxy group, alinino group, aliphatic azo group , Aromatic azo group, heterocyclic azo group, aliphatic sulfinyl group, aromatic sulfinyl group, heterocyclic sulfinyl group, aliphatic sulfonyloxy group, aromatic sulfonyloxy group, heterocyclic sulfonyloxy group, sulfamoyl group, sulfo group, phosphonyl group, phosphino A monoamino group is mentioned.

(C) Specific example in the case where ethylenic double bond group is acryloyl group in the structure represented by M among the compounds represented by general formula (A) which is a curable compound which has an adhesive group which is a preferable aspect of a compound which has a board | substrate adhesive group. Although [(MA-1)-(MA-11)] is shown below, it is not limited to this. In addition, an acryloyl group can be substituted by substituents other than the said acryloyl group. Moreover, you may have two or more ethylenic double bond groups mutually different in the structure represented by M.

When m is 1, X in the said General formula (A) is preferably selected from the group which consists of monovalent functional groups represented by a following formula.

(In the formula, R ¹¹ to R ¹³ each independently represent a hydrogen atom, an alkyl group, an aryl group, an alkynyl group, or an alkenyl group, and M ¹ and M ² each independently represent a hydrogen atom, a metal atom, or an onium group. , X ^- represents the counter anion.)

When m is 2, X in the said General formula (A) is preferably selected from the group which consists of a bivalent functional group represented by a following formula.

(In the formula, each of R ¹² to R ¹³ independently represents a hydrogen atom, an alkyl group, an aryl group, an alkynyl group, or an alkenyl group, M ² represents a hydrogen atom, a metal atom, or an ammonium group, and X ⁻ represents the opposite. Indicates an anion.)

When m is 3, X in the said General formula (A) is preferably selected from the group which consists of a trivalent functional group represented by a following formula.

(In formula, R <^13> represents a hydrogen atom, an alkyl group, an aryl group, an alkynyl group, or an alkenyl group each independently, and X <^-> represents a counter anion.)

When X of the said general formula (A) has a counter anion as partial structure, As these counter anions X <^-> , For example, Halogen anions, such as a fluorine anion, a chlorine anion, a bromine anion, an iodine anion; Acetic anion, trifluoroacetic anion, sulfate anion, hydrogen sulfate anion, methanesulfonic acid anion, trifluoromethane sulfate anion, perchlorate anion, tetrafluoroborate anion, hexafluorophosphate anion, hexachloroantimonate anion, hexa Fluoroantimonate anion etc. are mentioned. Among these, halogen anion, trifluoromethanesulfonic acid anion, methanesulfonic acid anion, sulfate anion, hydrogen sulfate anion, tetrafluoroborate anion, hexafluorophosphate anion and the like are preferable in view of solubility and stability of the compound. All.

In the present invention, the most preferable form of the adhesive agent is a compound having an adhesive group having a silyl atom from the viewpoint of adhesion, and also having a compound having an ethylenic double bond group, i. The curable compound which has the partial structure containing the adhesive group which has a silyl atom, and ethylenically unsaturated double bond is mentioned.

(C) It is preferable that content of the compound which has a board | substrate adhesive group in a molecule is 0.01-40 mass% in solid content of the inkjet ink of this invention, It is more preferable that it is 0.05-20 mass%, It is 0.1-10 mass% More preferred.

In addition, when using the curable compound which has an adhesive group as (C) component, ie, an adhesive agent, it is preferable that it is 0.01-60 mass%, and, as for the addition amount, it is more preferable that it is the range of 0.05-40 mass%.

<Compound hardened by at least one of (A) acid and radical>

Compound (A) which can be used for this invention (A) and the compound hardened | cured by at least one of radical (hereinafter, suitably called a curable compound) form a crosslinked structure by starting species, such as an acid and a radical, or a polymerization reaction As long as it is a compound hardened | cured by giving rise, etc., it can use without limitation. Examples of the curable compound include methylol compounds, cyclic ethers such as epoxy compounds and oxetane compounds, combinations of thiol compounds and ethylenically unsaturated double bond compounds, styrene groups, itaconic acid, crotonic acid, isocrotonic acid, maleic acid, (meth The compound etc. which have at least 1 ethylenically unsaturated double bond, such as the acryloyl group or the (meth) acrylamide group, etc. are mentioned, Especially, (meth) acrylic acid is preferable at the point of sclerosis | hardenability and stability.

Moreover, when using the curable compound which has a board | substrate adhesive group as said (C) adhesive agent, when the content expresses sufficient sclerosis | hardenability by controlling the content, since the component has a function of (C) component and (A) component, Although the curable compound which does not have the adhesive group generally used does not necessarily need to be added, such a curable compound can also be used together for the purpose of controlling the physical property of an inkjet ink or improving curability.

In this invention, as a curable compound (curable compound which does not have an adhesive group with a board | substrate) which can be used together, the compound well known as a compound which has an ethylenically unsaturated double bond can be used without a restriction | limiting in particular. These include, for example, those having chemical forms such as monomers, prepolymers, ie dimers, trimers and oligomers, or mixtures thereof and copolymers thereof.

As an example of a monomer and its copolymer, unsaturated carboxylic acid (for example, acrylic acid, methacrylic acid, itaconic acid, crotonic acid, isocrotonic acid, maleic acid, etc.), its ester, and amide are mentioned, Preferably An ester of an unsaturated carboxylic acid and an aliphatic polyhydric alcohol compound and amides of an unsaturated carboxylic acid and an aliphatic polyvalent amine compound are used. Also suitable are addition reactants of unsaturated carboxylic acid esters or amides having nucleophilic substituents such as hydroxy groups, amino groups, mercapto groups, monofunctional or polyfunctional isocyanates or epoxy, and dehydration condensation reaction products of monofunctional or polyfunctional carboxylic acids. Is used. Moreover, the addition reaction product of unsaturated carboxylic acid ester or amides which have electrophilic substituents, such as an isocyanate group and an epoxy group, and monofunctional or polyfunctional alcohols, amines, and thiols, and a detachable substituent, such as a halogen group and a tosyloxy group Substituted reactants of unsaturated carboxylic acid esters or amides with monofunctional or polyfunctional alcohols, amines and thiols are also suitable. As another example, a compound group substituted with unsaturated phosphonic acid, styrene, vinyl ether, or the like may be used instead of the above unsaturated carboxylic acid.

Specific examples of monomers of esters of aliphatic polyhydric alcohol compounds and unsaturated carboxylic acids include ethylene glycol diacrylate, triethylene glycol diacrylate, 1,3-butanediol diacrylate, tetramethylene glycol diacrylate, and propylene glycol as acrylic acid esters. Diacrylate, neopentyl glycol diacrylate, trimethylol propane triacrylate, trimethylol propane tri (acryloyloxypropyl) ether, trimethylol ethane triacrylate, hexanediol diacrylate, 1,4-cyclohexane Diol diacrylate, tetraethylene glycol diacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol diacrylate, dipentaerythritol hexaacrylate, sorbitol Triacrylate, Sorbitol tetraacrylate, sorbitol pentaacrylate, sorbitol hexaacrylate, tri (acryloyloxyethyl) isocyanurate, polyester acrylate oligomer and the like. Moreover, the EO modified substance or PO modified substance of these compounds is also mentioned.

As methacrylic acid ester, tetramethylene glycol dimethacrylate, triethylene glycol dimethacrylate, neopentyl glycol dimethacrylate, trimethylol propane trimethacrylate, trimethylol ethane trimethacrylate, ethylene glycol dimethacrylate Acrylate, 1,3-butanediol dimethacrylate, hexanediol dimethacrylate, pentaerythritol dimethacrylate, pentaerythritol trimethacrylate, pentaerythritol tetramethacrylate, dipentaerythritol dimethacrylate Acrylate, dipentaerythritol hexamethacrylate, sorbitol trimethacrylate, sorbitol tetramethacrylate, bis [p- (3-methacryloxy-2-hydroxypropoxy) phenyl] dimethylmethane, bis- [ p- (methacryloxyethoxy) phenyl] dimethylmethane, etc., these EO modified bodies, PO modified bodies are mentioned.

As itaconic acid ester, ethylene glycol diitaconate, propylene glycol diitaconate, 1, 3- butanediol diitaconate, 1, 4- butanediol diitaconate, tetramethylene glycol diitaconate, pentaerythritol diitaconate, sorbitol Tetraitaconate and the like. Examples of the crotonic acid esters include ethylene glycol dicrotonate, tetramethylene glycol dicrotonate, pentaerythritol dicrotonate, and sorbitol tetradicrotonate. Examples of isocrotonic acid esters include ethylene glycol diisocrotonate, pentaerythritol diisocrotonate, and sorbitol tetraisocrotonate. Examples of the maleic acid ester include ethylene glycol dimaleate, triethylene glycol dimaleate, pentaerythritol dimaleate, sorbitol tetramaleate and the like.

As an example of other ester, the aliphatic alcohol esters of Unexamined-Japanese-Patent No. 51-47334, Unexamined-Japanese-Patent No. 57-196231, the aromatics of Unexamined-Japanese-Patent No. 59-5240, Unexamined-Japanese-Patent No. 59-5241, Unexamined-Japanese-Patent No. 2-226149 The thing which has a system frame | skeleton, the thing containing the amino group of Unexamined-Japanese-Patent No. 1-165613, etc. is used suitably. In addition, the ester monomer mentioned above can also be used as a mixture.

Moreover, as a specific example of the monomer of the amide of an aliphatic polyhydramine compound and unsaturated carboxylic acid, methylene bisacrylamide, methylene bismethacrylamide, 1, 6- hexamethylene bisacrylamide, 1, 6- hexamethylene bismethacrylamide, di Ethylenetriamine trisacrylamide, xylylene bisacrylamide, xylylene bismethacrylamide and the like. As an example of another preferable amide monomer, what has a cyclohexylene structure of Unexamined-Japanese-Patent No. 54-21726 is mentioned.

Also suitable are urethane-based addition polymerizable compounds produced by addition reaction of isocyanate and hydroxyl group, and specific examples thereof include, for example, two or more isocyanates in one molecule described in Japanese Unexamined Patent Publication No. 48-41708. The vinylurethane compound etc. which contain two or more polymerizable vinyl groups in one molecule which added the vinyl monomer containing the hydroxyl group represented by following General formula (2) to the polyisocyanate compound which has group are mentioned.

CH ₂ = C (R ⁴ ) COOCH ₂ CH (R ⁵ ) OH (2)

(Wherein R ⁴ and R ⁵ represent H or CH ₃ ).

Moreover, urethane acrylates described in Japanese Patent Laid-Open Nos. 51-37193, 2-232293 and 2-16765, and 58-49860, 56-17654, and 62 Also suitable are urethane compounds having an ethylene oxide-based skeleton described in -39417 and Japanese Patent Application No. 62-39418. Moreover, when using addition polymerizable compounds which have an amino structure and a sulfide structure in a molecule | numerator as described in Unexamined-Japanese-Patent No. 63-277653, Unexamined-Japanese-Patent No. 63-260909, and Unexamined-Japanese-Patent No. 1-105238, it is very excellent in the photosensitive speed. A curable composition can be obtained.

As other examples, the polyester acrylates described in Japanese Unexamined Patent Publications No. 48-64183, No. 49-43191, No. 52-30490, and Japanese Unexamined Patent Publications, epoxy acrylics made by reacting an epoxy resin with (meth) acrylic acid Polyfunctional acrylates and methacrylates, such as the rate, can be mentioned. Moreover, the specific unsaturated compound of Unexamined-Japanese-Patent No. 46-43946, Unexamined-Japanese-Patent No. 1-40337, 1-40336, the vinyl phosphonic acid type-compound of Unexamined-Japanese-Patent No. 2-25493, etc. are mentioned. In addition, in some cases, the structure containing the perfluoroalkyl group of Unexamined-Japanese-Patent No. 61-22048 is used suitably. In addition, Japan Adhesive Society vol. 20, No. 7, 300 to 308 pages (1984) can also be used as photocurable monomers and oligomers.

In this invention, when adding another polymeric compound, it is preferable to contain 2 or more ethylenically unsaturated bond from a viewpoint of hardening sensitivity, and it is more preferable to contain 3 or more. Especially, it is preferable to contain 2 or more of (meth) acrylic acid ester structures, It is more preferable to contain 3 or more, It is most preferable to contain 4 or more. Moreover, it is preferable to contain an EO modified body from a hardening sensitivity and the developability of an unexposed part. Moreover, it is preferable to contain a urethane bond from a viewpoint of hardening sensitivity and exposure part strength.

From the above viewpoints, bisphenol A diacrylate, bisphenol A diacrylate EO modified body, trimethylol propane triacrylate, trimethylol propane tri (acryloyloxypropyl) ether, trimethylol ethane triacrylate, tetraethylene glycol di Acrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, sorbitol tree Acrylate, sorbitol tetraacrylate, sorbitol pentaacrylate, sorbitol hexaacrylate, tri (acryloyloxyethyl) isocyanurate, pentaerythritol tetraacrylate EO modified body, dipentaerythritol hexaacrylate EO modified Sieve and the like as preferable As a commercial item, urethane oligomer UAS-10, UAB-140 (made by Sanyo Kokusaku pulp company), DPHA-40H (made by Nihon Kayaku Co., Ltd.), UA-306H, UA-306T, UA-306I, AH-600 , T-600 and AI-600 (manufactured by Kyoeisha Co., Ltd.) are preferable.

Especially, bisphenol A diacrylate EO modified body, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, and tri (acryloyloxyethyl) Isocyanurate, pentaerythritol tetraacrylate EO modified body, dipentaerythritol hexaacrylate EO modified body, DPHA-40H (made by Nippon Kayaku Co., Ltd.), UA-306H, UA-306T, UA-306I, AH- 600, T-600, AI-600 (made by Kyoeisha), etc. are more preferable.

The compounding ratio of the monomer which is a curable compound is mix | blended in the ratio of 0-70 weight% normally with respect to solid content whole quantity of an ink. Here, when the blending ratio of the 2 to 3 functional monomer is less than 20% by weight of the total solids, the ink is not sufficiently diluted with the monomers, and the viscosity of the ink is high from the beginning or high after volatilization of the solvent powder, There is a fear of clogging the nozzles of the inkjet head. Moreover, when the compounding ratio of 2-3 trifunctional monomer exceeds 70 weight% of all solid content, the crosslinking density of a coating film will become low, the solvent resistance, adhesiveness, and hardness of a coating film are inferior, and there exists a possibility that sufficient characteristic may not be obtained. have.

However, when the polyfunctional monomers to be blended in the ink are all 2 to 3 functional monomers, since the viscosity rise due to drying of the ink is unlikely to occur, the ejection property of the inkjet head is stable, while the ink layer is obtained by curing the ink layer. The film strength of the cured layer, the adhesion to the substrate, the solvent resistance, etc. may be insufficient. Therefore, a crosslinking density can be raised by mix | blending a suitable amount of a tetrafunctional or more than trifunctional polyfunctional monomer and an oligomer with said 2-3 functional monomer, and can provide sufficient film strength and adhesiveness to the pattern of a hardened layer. As a tetrafunctional monomer and an oligomer, pentaerythritol tetraacrylate, pentaerythritol tetramethacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, dipentaerythritol hexamethacrylate, etc. are mentioned, for example. Can be illustrated.

The polyfunctional or more than four functional component is normally mix | blended in the ratio of 1-30 weight% with respect to solid content whole quantity of ink. Moreover, in order to balance the discharge property stabilization by a 2-3 trifunctional monomer, and the improvement of the intensity | strength and adhesiveness improvement by the multifunctional component more than tetrafunctional, with respect to 100 weight part of 2 trifunctional monomers, the polyfunctional more than tetrafunctional The blending ratio of the components is usually 1 to 50 parts by weight, preferably the lower limit of the blending ratio is 2 parts by weight or more, and / or the upper limit of the blending ratio is 35 parts by weight or less. Here, when the compounding ratio of a tetrafunctional or more than trifunctional component is less than 1 weight part with respect to 100 weight part of said 2-3 trifunctional monomers, there exists a possibility that the characteristics, such as hardness, solvent resistance, etc. after hardening an ink may not fully be obtained. have. Moreover, when the said compounding ratio of a tetrafunctional or more than trifunctional component exceeds 50 weight part, the curing speed of an ink may become slow and a process speed may become slow.

Moreover, it is preferable that the addition amount with respect to the inkjet ink of (A) curable compound is 5 to 80 mass% as a total amount, and (C) curable compound which has the adhesive group when using the curable compound which has an adhesive group as adhesive agent It is preferable that the total amount of a compound and (A) curable compound exists in the range of 7-85 mass%.

<(B) Pigment>

The pigment as a colorant used in the inkjet ink of the present invention can be used by selecting any one from an organic colorant and an inorganic colorant in accordance with the color required by the R, G, B, and the like of the pixel (pixel part) or the black matrix layer. .

As the organic colorant, for example, dyes, organic pigments, natural pigments and the like can be used. As the inorganic colorant, for example, an inorganic pigment, a extender pigment, or the like can be used. Among these, organic pigments are preferably used because they have high color development and high heat resistance. As the organic pigment, for example, a compound which is classified as Pigment by Color Index (CI, issued by The Society of Dyers and Colourists), and specifically, the following Color Index (CI) number is given. It can be mentioned.

C.I. Pigment Yellow 1, C.I. Pigment Yellow 3, C.I. Pigment Yellow 12, C.I. Pigment Yellow 13, C.I. Pigment Yellow 14, C.I. Pigment Yellow 15, C.I. Pigment Yellow 16, C.I. Pigment Yellow 17, C.I. Pigment Yellow 20, C.I. Pigment Yellow 24, C.I. Pigment Yellow 31, C.I. Pigment Yellow 55, C.I. Pigment Yellow 60, C.I. Pigment Yellow 61, C.I. Pigment Yellow 65, C.I. Pigment Yellow 71, C.I. Pigment Yellow 73, C.I. Pigment Yellow 74, C.I. Pigment Yellow 81, C.I. Pigment Yellow 83, C.I. Pigment Yellow 93, C.I. Pigment Yellow 95, C.I. Pigment Yellow 97, C.I. Pigment Yellow 98, C.I. Pigment Yellow 100, C.I. Pigment Yellow 101, C.I. Pigment Yellow 104, C.I. Pigment Yellow 106, C.I. Pigment Yellow 108, C.I. Pigment Yellow 109, C.I. Pigment Yellow 110, C.I. Pigment Yellow 113, C.I. Pigment Yellow 114, C.I. Pigment Yellow 116, C.I. Pigment Yellow 117, C.I. Pigment Yellow 119, C.I. Pigment Yellow 120, C.I. Pigment Yellow 126, C.I. Pigment Yellow 127, C.I. Pigment Yellow 128, C.I. Pigment Yellow 129, C.I. Pigment Yellow 138, C.I. Pigment Yellow 139, C.I. Pigment Yellow 150, C.I. Pigment Yellow 151, C.I. Pigment Yellow 152, C.I. Pigment Yellow 153, C.I. Pigment Yellow 154, C.I. Pigment Yellow 155, C.I. Pigment Yellow 156, C.I. Pigment Yellow 166, C.I. Pigment Yellow 168, C.I. Pigment yellow 175;

C.I. Pigment Orange 1, C.I. Pigment Orange 5, C.I. Pigment Orange 13, C.I. Pigment Orange 14, C.I. Pigment Orange 16, C.I. Pigment Orange 17, C.I. Pigment Orange 24, C.I. Pigment Orange 34, C.I. Pigment Orange 36, C.I. Pigment Orange 38, C.I. Pigment Orange 40, C.I. Pigment Orange 43, C.I. Pigment Orange 46, C.I. Pigment Orange 49, C.I. Pigment Orange 51, C.I. Pigment Orange 61, C.I. Pigment Orange 63, C.I. Pigment Orange 64, C.I. Pigment Orange 71, C.I. Pigment orange 73;

C.I. Pigment Violet 1, C.I. Pigment Violet 19, C.I. Pigment Violet 23, C.I. Pigment Violet 29, C.I. Pigment violet 32, C.I. Pigment Violet 36, C.I. Pigment violet 38;

C.I. Pigment Red 1, C.I. Pigment Red 2, C.I. Pigment Red 3, C.I. Pigment Red 4, C.I. Pigment Red 5, C.I. Pigment Red 6, C.I. Pigment Red 7, C.I. Pigment Red 8, C.I. Pigment Red 9, C.I. Pigment Red 10, C.I. Pigment Red 11, C.I. Pigment Red 12, C.I. Pigment Red 14, C.I. Pigment Red 15, C.I. Pigment Red 16, C.I. Pigment Red 17, C.I. Pigment Red 18, C.I. Pigment Red 19, C.I. Pigment Red 21, C.I. Pigment Red 22, C.I. Pigment Red 23, C.I. Pigment Red 30, C.I. Pigment Red 31, C.I. Pigment Red 32, C.I. Pigment Red 37, C.I. Pigment Red 38, C.I. Pigment Red 40, C.I. Pigment Red 41, C.I. Pigment Red 42, C.I. Pigment Red 48: 1, C.I. Pigment Red 48: 2, C.I. Pigment Red 48: 3, C.I. Pigment Red 48: 4, C.I. Pigment Red 49: 1, C.I. Pigment Red 49: 2, C.I. Pigment Red 50: 1, C.I. Pigment Red 52: 1, C.I. Pigment Red 53: 1, C.I. Pigment Red 57, C.I. Pigment Red 57: 1, C.I. Pigment Red 57: 2, C.I. Pigment Red 58: 2, C.I. Pigment Red 58: 4, C.I. Pigment Red 60: 1, C.I. Pigment Red 63: 1, C.I. Pigment Red 63: 2, C.I. Pigment Red 64: 1, C.I. Pigment Red 81: 1, C.I. Pigment Red 83, C.I. Pigment Red 88, C.I. Pigment Red 90: 1, C.I. Pigment Red 97, C.I. Pigment Red 101, C.I. Pigment Red 102, C.I. Pigment Red 104, C.I. Pigment Red 105, C.I. Pigment Red 106, C.I. Pigment Red 108, C.I. Pigment Red 112, C.I. Pigment Red 113, C.I. Pigment Red 114, C.I. Pigment Red 122, C.I. Pigment Red 123, C.I. Pigment Red 144, C.I. Pigment Red 146, C.I. Pigment Red 149, C.I. Pigment Red 150, C.I. Pigment Red 151, C.I. Pigment Red 166, C.I. Pigment Red 168, C.I. Pigment Red 170, C.I. Pigment Red 171, C.I. Pigment Red 172, C.I. Pigment Red 174, C.I. Pigment Red 175, C.I. Pigment Red 176, C.I. Pigment Red 177, C.I. Pigment Red 178, C.I. Pigment Red 179, C.I. Pigment Red 180, C.I. Pigment Red 185, C.I. Pigment Red 187, C.I. Pigment Red 188, C.I. Pigment Red 190, C.I. Pigment Red 193, C.I. Pigment Red 194, C.I. Pigment Red 202, C.I. Pigment Red 206, C.I. Pigment Red 207, C.I. Pigment Red 208, C.I. Pigment Red 209, C.I. Pigment Red 215, C.I. Pigment Red 216, C.I. Pigment Red 220, C.I. Pigment Red 224, C.I. Pigment Red 226, C.I. Pigment Red 242, C.I. Pigment Red 243, C.I. Pigment Red 245, C.I. Pigment Red 254, C.I. Pigment Red 255, C.I. Pigment Red 264, C.I. Pigment red 265;

C.I. Pigment Blue 15, C.I. Pigment Blue 15: 3, C.I. Pigment Blue 15: 4, C.I. Pigment Blue 15: 6, C.I. Pigment Blue 60; C.I. Pigment Green 7, C.I. Pigment green 36;

C.I. Pigment Brown 23, C.I. Pigment brown 25;

C.I. Pigment Black 1, Pigment Black 7.

In addition, specific examples of the inorganic pigment or extender pigment include titanium oxide, barium sulfate, calcium carbonate, zinc oxide, lead sulfate, yellow lead, zinc sulfur, bengal (red iron oxide (III)), cadmium red, ultramarine blue, royal blue, and chromium oxide. Green, cobalt green, umber, titanium black, synthetic iron black, carbon black, etc. are mentioned. In this invention, a pigment can be used individually or in mixture of 2 or more types.

When forming the pattern of a black matrix layer on the board | substrate of a color filter using the inkjet ink of this invention, the black pigment with high light-shielding property is mix | blended in inkjet ink. As a black pigment with high light-shielding property, organic coloring agents, such as inorganic colorants, such as carbon black and iron tetraoxide, or cyanine black, can be used, for example. Since an ink layer formed of an inkjet ink containing a pigment having a high light-shielding property is difficult to reach light to the inside, when the pattern of the black matrix layer is formed using the inkjet ink of the present invention, the binder described below is photocurable. Rather than using a binder, it is preferable to use a thermosetting binder. However, it can also harden | cure by light by adjusting the hardening method, such as lengthening the thickness and exposure time of an ink layer.

When using the curable composition of this invention for a color filter, from a viewpoint of a color stain and contrast, 10-100 nm is preferable, as for the primary particle diameter of a pigment, 10-70 nm is more preferable, 10-50 nm is more preferable 10-40 nm is the most preferable.

When forming a pixel, a pigment is normally mix | blended in 1 to 60 weight%, Preferably it is 15 to 40 weight% with respect to solid content whole quantity of an inkjet ink. When there are too few pigments, there exists a possibility that the permeation density | concentration at the time of apply | coating inkjet ink to predetermined film thickness (usually 0.1-2.0 micrometers) may not be enough. Moreover, when there are too many pigments, there exists a possibility that the characteristics, such as adhesiveness to a board | substrate, the surface roughness of a cured film, coating film hardness, etc., when inkjet ink is apply | coated and hardened | cured on a board | substrate may become inadequate.

It is preferable to add a dispersing agent to the inkjet ink of this invention from a viewpoint of improving the dispersibility of the pigment.

As the dispersant (pigment dispersant) that can be used in the present invention, a cationic, anionic or nonionic polymer dispersant can be used. For example, polyamideamine and its salt, polycarboxylic acid and its salt, high molecular weight unsaturated acid ester, modified polyurethane, modified polyester, polyether, modified poly (meth) acrylate, (meth) acrylic copolymer, naphthalene Sulfonic acid-formalin condensates, and polyoxyethylene alkyl phosphate esters, polyoxyethylene alkylamines, alkanol amines, pigment derivatives, and the like.

Polymeric dispersants can be further classified into linear polymers, terminal modified polymers, graft polymers, and block polymers from the structure.

The polymeric dispersant adsorbs on the pigment surface and acts to prevent reagglomeration. Therefore, the terminal modified | denatured type | mold polymer | macromolecule, a graft type polymer, and a block type polymer which have an anchor site to a pigment surface are mentioned as a preferable structure. On the other hand, the pigment derivative has the effect of promoting the adsorption of the polymer dispersant by modifying the pigment surface.

As a specific example of the pigment dispersant which can be used for this invention, BYK Chemie Corporation made "Disperbyk-101 (polyamideamine phosphate), 107 (carboxylic acid ester), 110 (copolymer containing an acid group), 130 (polyamide), 161, 162, 163, 164, 165, 166, 170 (polymer copolymer), "BYK-P104, P105 (high molecular weight unsaturated polycarboxylic acid)," EFKA4047, 4050, 4010, 4165 (polyurethane system), EFKA4330, 4340 made by EFKA company (Block copolymer), 4400, 4402 (modified polyacrylate), 5010 (polyesteramide), 5765 (high molecular weight polycarboxylate), 6220 (fatty acid polyester), 6745 (phthalocyanine derivative), 6750 (azo pigment derivative) ), "Ajisper PB821, PB822" made by Ajinomoto Fine Techno Co., Ltd., "Florene TG-710 (urethane oligomer)" by Kyoeisha Chemical Co., Ltd., "Polyflow No. 50E, No. 300 (acrylic copolymer), "dispalon KS-860, 873SN, 874, # 2150 (aliphatic polycarboxylic acid), # 7004 (polyether ester), DA-703-50, DA-705, manufactured by Kusumoto Kasei Co., Ltd. DA-725, "Demol RN, N (naphthalenesulfonic acid-formalin polycondensate), MS, C, SN-B (aromatic sulfonic acid-formalin polycondensate)" by Kao Corporation, "Homogenol L-18 (polymeric polycarboxylic acid)" , "Emulgen 920, 930, 935, 985 (polyoxyethylene nonyl phenyl ether)", "acetamine 86 (stearylamine acetate)", "Solsperus 5000 (phthalocyanine derivative) made by Lubrizol company, 22000 (Azo pigment) Derivatives), 13240 (polyesteramine), 3000, 17000, 27000 (polymer having a functional part at the end), 24000, 28000, 32000, 38500 (graft type polymer), Nikko T106 (polyoxyethylene sorbitan) Monooleate), MYS-IEX (polyoxyethylene monostearate), and the like.

These dispersing agents may be used independently and may be used in combination of 2 or more type. In this invention, it is especially preferable to use combining a pigment derivative and a polymer dispersing agent.

As content of the dispersing agent in this invention, it is preferable that it is 1-150 mass% with respect to a pigment, 3-100 mass% is more preferable, 5-80 mass% is more preferable.

Specifically, in the case of using a polymer dispersant, the amount thereof is preferably in the range of 5 to 100% by mass, and more preferably in the range of 10 to 80% by mass with respect to the pigment. Moreover, when using a pigment derivative, as the usage-amount, it is preferable to exist in the range of 1-30 mass% with respect to a pigment, It is more preferable to exist in the range of 3-20 mass%, The range of 5-15 mass% It is particularly preferred to be at.

In this invention, when using a pigment and a dispersing agent as a coloring agent, it is preferable that the sum total of a coloring agent and a dispersing agent content is 30 mass% or more and 90 mass% or less with respect to the total solid which comprises a curable composition from a viewpoint of hardening sensitivity and color concentration, It is more preferable that they are 40 mass% or more and 85 mass% or less, and it is more preferable that they are 50 mass% or more and 80 mass% or less.

(D) solvent

The solvent of this color filler inkjet ink can be selected from the solvents shown below, and can be used.

Glycol ethers such as ethylene glycol monoethyl ether; Glycol ether esters such as ethylene glycol monomethyl ether acetate; Glycol oligomer ethers such as diethylene glycol monomethyl ether; Glycol oligomer ether esters such as diethylene glycol monomethyl ether acetate; Aliphatic carboxylic acids such as acetic acid, 2-ethylhexanoic acid and acetic anhydride or acid anhydrides thereof; Aliphatic or aromatic esters such as ethyl acetate and propyl benzoate; Dicarboxylic acid diesters such as diethyl carbonate; Alkoxycarboxylic acid esters such as methyl 3-methoxypropionate; Ketocarboxylic acid esters such as ethyl acetoacetate; Halogenated carboxylic acids such as chloroacetic acid and dichloroacetic acid; Alcohols or phenols such as ethanol, isopropanol and phenol; Aliphatic or aromatic ethers such as diethyl ether and anisole; Alkoxy alcohols such as 2-ethoxyethanol and 1-methoxy-2-propanol; Glycol oligomers such as diethylene glycol and tripropylene glycol; Amino alcohols such as 2-diethylaminoethanol and triethanolamine; Alkoxyalcohol esters such as 2-ethoxyethyl acetate; ketones such as acetone and methyl isobutyl ketone; Morpholines such as N-ethyl morpholine and phenyl morpholine; Aliphatic or aromatic amines such as pentylamine, tripentylamine, aniline; N, N-dimethylacetamide, N, N-dimethylformaldehyde, N-methylpyrrolidone, amides such as pyrrolidone, sulfoxides such as dimethyl sulfoxide; Hydrocarbons such as hexane, octane, docoic acid, heptene, 3,4-dimethylhexane, dicyclohexane, and the like.

Although these solvents may be mixed alone or in combination, at least one solvent may be used at normal pressure in order to suppress concentration change over time and solidification at the derivation site at the time of extraction, and to prevent hardening and delay of drying. It is preferable to use a solvent having a boiling point of 150 ° C. or higher and 300 ° C. or lower, preferably 160 ° C. or higher and 250 ° C. or lower, and specifically, diethylene glycol monobutyl in terms of pigment dispersion liquid stability and drying property after derivation. Glycol oligomer ether esters such as ether acetate and diethylene glycol monomethyl ether acetate; Alkoxy alcohols such as 2-ethoxyethanol and 1-methoxy-2-propanol; More preferred are glycol oligomers such as diethylene glycol and tripropylene glycol, and glycol ether esters such as ethylene glycol monomethyl ether acetate.

The ink which discharges using such a solvent normally at a ratio of 40-95 weight% with respect to the whole quantity of the ink containing this solvent is manufactured. If the solvent is too small, the viscosity of the ink is high, and the ejection from the inkjet head becomes difficult. In addition, when there are too many solvents, while the ink filling amount (ink deposition amount) with respect to a predetermined wettability change site | part (ink layer formation site | part) is not enough, the film | membrane of the ink deposited on the wettability change site | part will fall, and the surrounding non-exposed part It spreads and spreads to the adjacent wettability change site | part (ink layer formation site | part). In other words, the amount of ink filling that can be deposited without spreading from the wettability change site (ink layer forming site) to which the ink is to be deposited becomes insufficient, and the film thickness after drying becomes too thin, whereby a sufficient permeation concentration cannot be obtained. .

In addition to the essential components of said (A)-(D), the inkjet ink of this invention can use various compounds according to the objective, unless the effect of this invention is impaired. For example, for the purpose of improving the film properties of the formed colored pattern, a compound (E) which generates an acid or a (F) binder polymer can be added.

Hereinafter, a preferable combined component is demonstrated.

<(E) Compound which generates at least one of an acid and a radical>

The compound which generates at least one of an acid and a radical in the present invention (hereinafter, suitably referred to as an acid / radical generator) refers to a compound which generates at least one of an acid and a radical by light or heat after derivation of the inkjet. By using such a compound together, the acid, radical, etc. which generate | occur | produced from this compound function as a starting species, and (A) hardening reaction of the compound hardened | cured by at least one of an acid and a radical is started, advanced, and accelerated | stimulated.

When the component (E) is a compound which generates an acid, the acid generated by the compound is carboxylic acid, sulfonic acid, phosphoric acid, phosphoric acid ester, sulfuric acid, sulfuric acid ester, sulfinic acid, hydrochloric acid, nitric acid, boric acid, trifluoroboric acid, boron It can be used as long as it can generate Bronsted acid or Lewis acid by the action of light and / or heat in a droplet after application, such as a complex, an antimony derivative, or hexafluorophosphoric acid.

As a specific example of such an acid / radical generator, the following compounds also known as a photoinitiator are mentioned.

(a) an organic halogenated compound, (b) oxydiazole compound, (c) organic boric acid compound, (d) disulfonic acid compound, (e) oxime ester compound, (f) onium salt compound, (g) carbonyl compound, (h) ketal compounds, (i) benzoin compounds, (j) acridine compounds, (l) organic peroxide compounds, (m) azo compounds, (n) coumarin compounds, (o) azide compounds, (p) Metallocene compound, (q) hexaarylbiimidazole compound, (r) acylphosphine (oxide) compound.

(a) As an organic halogenated compound, specifically, Wakabayashi etc., "Bull Chem. Soc Japan '' 42, 2924 (1969), U.S. Patent No. 3,905,815, Japanese Patent Application No. 46-4605, Japanese Patent Application No. 48-36281, Japanese Patent Application No. 55-32070, Japanese Patent Application No. 60-239736, Japanese Patent Application No. 61- 169835, JP 61-169837, JP 62-58241, JP 62-212401, JP 63-70243, JP 63-298339, MP The compound described in Hutt "Journal of Heterocyclic Chemistry" 1 (No3), (1970) is mentioned, In particular, the oxazole compound in which trihalomethyl group was substituted, and the s-triazine compound are mentioned.

As the s-triazine compound, more preferably, an s-triazine derivative in which at least one mono, di, or trihalogen-substituted methyl group is bonded to the s-triazine ring, specifically, for example, 2,4,6 -Tris (monochloromethyl) -s-triazine, 2,4,6-tris (dichloromethyl) -s-triazine, 2,4,6-tris (trichloromethyl) -s-triazine, 2- Methyl-4,6-bis (trichloromethyl) -s-triazine, 2-n-propyl-4,6-bis (trichloromethyl) -s-triazine, 2- (α, α, β-trichloro Roethyl) -4,6-bis (trichloromethyl) -s-triazine, 2-phenyl-4,6-bis (trichloromethyl) -s-triazine, 2- (p-methoxyphenyl)- 4,6-bis (trichloromethyl) -s-triazine, 2- (3,4-epoxyphenyl) -4,6-bis (trichloromethyl) -s-triazine, 2- (p-chlorophenyl ) -4,6-bis (trichloromethyl) -s-triazine, 2- [1- (p-methoxyphenyl) -2,4-butadienyl] -4,6-bis (trichloromethyl) -s-triazine, 2-styryl-4,6-bis (trickle) Rhomethyl) -s-triazine, 2- (p-methoxystyryl) -4,6-bis (trichloromethyl) -s-triazine, 2- (pi-propyloxystyryl) -4,6 -Bis (trichloromethyl) -s-triazine, 2- (p-tolyl) -4,6-bis (trichloromethyl) -s-triazine, 2- (4-nathoxynaphthyl) -4, 6-bis (trichloromethyl) -s-triazine, 2-phenylthio-4,6-bis (trichloromethyl) -s-triazine, 2-benzylthio-4,6-bis (trichloromethyl) -s-triazine, 2,4,6-tris (dibromomethyl) -s-triazine, 2,4,6-tris (tribromomethyl) -s-triazine, 2-methyl-4, 6-bis (tribromomethyl) -s-triazine, 2-methoxy-4,6-bis (tribromomethyl) -s-triazine, etc. are mentioned.

(b) As the oxydiazole compound, for example, 2-trichloromethyl-5-styryl-1,3,4-oxodiazole, 2-trichloromethyl-5- (cyanostyryl) -1,3 , 4-oxodiazole, 2-trichloromethyl-5- (naphtho-1-yl) -1,3,4-oxodiazole, 2-trichloromethyl-5- (4-styryl) styryl -1,3,4-oxodiazole etc. are mentioned.

(c) As an organic borate compound, for example, Unexamined Japanese Patent Application Laid-Open No. 62-143044, Japanese Patent Laid-Open No. 62-150242, Japanese Patent Laid-Open No. 9-188685, Japanese Patent Laid-Open No. 9-188686, Japanese Patent Laid-Open No. 9-188710 131837, Japanese Patent Application Laid-Open No. 2002-107916, Japanese Patent No. 2764769, Japanese Patent Application No. 2000-310808, and the organic materials described by Kunz and Martin in "Rad Tech '98. Proceeding, April, p. 19-22, 1998, Chicago." Borate, the organoboron sulfonium complex or organoboron oxosulfonium complex of Unexamined-Japanese-Patent No. 6-157623, Unexamined-Japanese-Patent No. 6-175564, and Unexamined-Japanese-Patent No. 6-175561, Unexamined-Japanese-Patent No. 6-175554, The organoboron iodonium complex described in Japanese Patent Application Laid-Open No. 6-175553, the organic boron phosphonium complex described in Japanese Patent Application Laid-Open No. Hei 9-188710, Japanese Patent Application Laid-Open No. 6-348011, Japanese Patent Application Laid-Open No. 7-128785, Japanese Patent Application Laid-Open No. 7-140589 Organic boron transition metal coordination complexes, such as Unexamined-Japanese-Patent No. 7-306527 and 7-292014, etc. are mentioned as a specific example.

(d) As a disulfone compound, the compound etc. which were described in Unexamined-Japanese-Patent No. 61-166544, Unexamined-Japanese-Patent No. 2001-132318, etc. are mentioned.

(e) As an oxime ester compound, it is J.C.S. Perkin II (1979), 1653-1660, J.C.S. Perkin II (1979), 156-162, Journal of Photopolymer Science and Technology (1995), 202-232, compounds described in Japanese Patent Application Laid-Open No. 2000-66385, Japanese Patent Application Laid-Open No. 2000-80068, and Japanese Patent Application Laid-Open No. 2004-534797. Compounds and the like.

(f) As an onium salt compound, S.I. Schlesinger, Photogr. Sci. Eng. 18, 387 (1974), T.S. Diazonium salts described in Bal et al., Polymer, 21, 423 (1980), ammonium salts described in US Pat. No. 4,069,055, Japanese Patent Application Laid-open No. Hei 4-365049, and the like. Phosphonium salts described in the specification, European Patent Nos. 104,143, U.S. Patents 339,049, Japanese Patent Application Laid-Open Nos. 2-150848, Japanese Patent Application Laid-Open Nos. 2-296514, and the like. Can be.

The iodonium salt which can be used suitably for this invention is a diaryl iodonium salt, and from a stability viewpoint, it is preferable that it is substituted by 2 or more electron donating groups, such as an alkyl group, an alkoxy group, and an aryloxy group. More preferably, it is preferable that an alkoxy group is substituted by 3 or more substituted, most preferably 4 or more substituted. Moreover, as another preferable form of iodonium salt which is excellent in sclerosis | hardenability by light, at least 1 of a diaryl forms a part of the chromophore which has absorption in 300 nm or more. Or as an substituent, the iodonium salt etc. which have a functional group which has absorption in 300 nm or more are preferable.

Examples of sulfonium salts that can be suitably used in the present invention include European Patent Nos. 370,693, 390,214, 233,567, 297,443, 297,442, US Patent 4,933,377, 161,811, 410,201, and 339,049. And sulfonium salts described in each specification of Nos. 4,760,013, 4,734,444, 2,833,827, German Patent Nos. 2,904,626, 3,604,580, 3,604,581, and are preferably substituted with electron withdrawing groups from the viewpoint of stability. It is preferable that it is done. As the electron withdrawing group, one having a Hammett value greater than zero is preferable. As a preferable electron attracting group, a halogen atom, a carboxyl group, etc. are mentioned.

Moreover, as another preferable sulfonium salt, it is a triaryl sulfonium salt from a thermal decomposition property, the balance of stability, and the photocurability when used together with a sensitizer etc., and has at least 1 electron-withdrawing group, such as a halogen atom and a carboxy group. It is preferable, More preferably, it is 2 or more substituted, Most preferably, it is 3 or more substituted.

Moreover, as a form of another preferable sulfonium salt, the sulfonium salt which one substituent of a triaryl sulfonium salt has a coumarin and anthraquinone structure, and has absorption in 300 nm or more is mentioned. As another preferable sulfonium salt, the triarylsulfonium salt forms the part of the chromophore in which at least 1 of triaryl has absorption in 300 nm or more. Or as a substituent, the triaryl sulfonium salt etc. which have a functional group which has absorption in 300 nm or more are preferable.

Moreover, as an onium salt compound, it is J.V. Crivello et al, Macromolecules, 10 (6), 1307 (1977), J.V. Crivello et al, J. Polymer Sci. Polymer Chem. Ed. 17, 1047 (1979), selenium salt, C.S. Wen et al, Teh, Proc. Conf. Rad. Onium salts, such as the arsonium salt as described in Curing ASIA, p478, Tokyo, Oct (1988), etc. are mentioned.

(g) As the carbonyl compound, benzophenone, Michler's ketone, 2-methylbenzophenone, 3-methylbenzophenone, 4-methylbenzophenone, 2-chlorobenzophenone, 4-bromobenzophenone, 2-carboxybenzo Benzophenone derivatives such as phenone, 2,2-dimethoxy-2-phenylacetophenone, 2,2-diethoxyacetophenone, 1-hydroxycyclohexylphenyl ketone, α-hydroxy-2-methylphenylpropanone, 1 -Hydroxy-1-methylethyl- (p-isopropylphenyl) ketone, 1-hydroxy-1- (p-dodecylphenyl) ketone, 2-methyl- (4 '-(methylthio) phenyl) -2 Acetophenone derivatives such as morpholino-1-propanone, 1,1,1-trichloromethyl- (p-butyl phenyl) ketone, 2-benzyl-2-dimethylamino-4-morpholinobutyrophenone , Thioxanthone, 2-ethyl thioxanthone, 2-isopropyl thioxanthone, 2-chloro thioxanthone, 2,4-dimethyl thioxanthone, 2,4-diethyl thioxanthone, 2,4- To thioxanthone derivatives such as diisopropyl thioxanthone and p-dimethylaminobenzoic acid , And the like p--diethylamino-benzoic acid ethyl ester derivatives such as the acid.

(h) As a ketal compound, benzyl methyl ketal, benzyl- (beta)-methoxyethyl ethyl acetal, etc. are mentioned, for example.

(i) As a benzoin compound, m-benzoin isopropyl ether, benzoin isobutyl ether, benzoin methyl ether, methyl-o- benzoyl benzoate, etc. are mentioned, for example.

(j) As an acridine compound, 9-phenyl acridine, 1, 7-bis (9-acridinyl) heptane, etc. are mentioned, for example.

(l) As the organic peroxide compound, for example, trimethylcyclohexanone peroxide, acetylacetone peroxide, 1,1-bis (tert-butylperoxy) -3,3,5-trimethylcyclohexane, 1,1-bis (tert-butylperoxy) cyclohexane, 2,2-bis (tert-butylperoxy) butane, tert-butylhydroperoxide, cumene hydroperoxide, diisopropylbenzenehydroperoxide, 2,5-dimethylhexane -2,5-dihydroperoxide, 1,1,3,3-tetramethylbutylhydroperoxide, tert-butylcumylperoxide, dicumylperoxide, 2,5-dimethyl-2,5-di (tert- Butyl peroxy) hexane, 2,5-oxanoyl peroxide, succinic peroxide, benzoyl peroxide, 2,4-dichlorobenzoyl peroxide, diisopropylperoxydicarbonate, di-2-ethylhexyl peroxydicarbonate , Di-2-ethoxyethylperoxydicarbonate, dimethoxyisopropyl peroxycarbonate, di (3-methyl-3-methoxy moiety Peroxydicarbonate, tert-butylperoxyacetate, tert-butylperoxypivalate, tert-butylperoxy neodecanoate, tert-butylperoxyoctanoate, tert-butylperoxylaurate, tersyl Carbonate, 3,3 ', 4,4'-tetra- (t-butylperoxycarbonyl) benzophenone, 3,3', 4,4'-tetra- (t-hexylperoxycarbonyl) benzo Phenone, 3,3 ', 4,4'-tetra- (p-isopropylcumylperoxycarbonyl) benzophenone, carbonyl di (t-butyl peroxy isoisophthalate), carbonyl di (t-hexyl per Oxy diisophthalate) and the like.

As an azo compound (m), the azo compound etc. which were described in Unexamined-Japanese-Patent No. 8-108621 are mentioned, for example.

As the (n) coumarin compound, for example, 3-methyl-5-amino-((s-triazin-2-yl) amino) -3-phenylcoumarin, 3-chloro-5-diethylamino-((s -Triazin-2-yl) amino) -3-phenyl coumarin, 3-butyl-5-dimethylamino-((s-triazin-2-yl) amino) -3-phenylcoumarin, and the like.

(o) As the azide compound, for example, the organic azide compound, 2,6-bis (4-azidobenzylidene, described in US Pat. No. 2,848,328, US Pat. No. 2852379, and US Pat. ) -4-ethylcyclohexanone (BAC-E) etc. are mentioned.

(p) As a metallocene compound, Unexamined-Japanese-Patent No. 59-152396, Unexamined-Japanese-Patent No. 61-151197, Unexamined-Japanese-Patent No. 63-41484, Unexamined-Japanese-Patent No. 2-249, Unexamined-Japanese-Patent No. 2-4705, for example Various titanocene compounds disclosed in Japanese Patent Application Laid-Open No. 5-83588, for example dicyclopentadienyl-Ti-bisphenyl, dicyclopentadienyl-Ti-bis-2,6-difluorophene- 1-yl, dicyclopentadienyl-Ti-bis-2,4-difluorophen-1-yl, dicyclopentadienyl-Ti-bis-2,4,6-trifluorophen-1- 1, dicyclopentadienyl-Ti-bis-2,3,5,6-tetrafluorophen-1-yl, dicyclopentadienyl-Ti-bis-2,3,4,5,6-penta Fluorophen-1-yl, dimethylcyclopentadienyl-Ti-bis-2,6-difluorophen-1-yl, dimethylcyclopentadienyl-Ti-bis-2,4,6-trifluoro Phen-1-yl, dimethylcyclopentadienyl-Ti-bis-2,3,5,6-tetrafluorophen-1-yl, dimethylcyclopentadienyl-Ti-bis-2,3,4,5 , 6-pentafluoro The iron-arene complex of Lofen-1-yl, Unexamined-Japanese-Patent No. 1-304453, Unexamined-Japanese-Patent No. 1-52109, etc. are mentioned.

(q) As a hexaaryl biimidazole compound, the various compounds described in each specification, such as Unexamined-Japanese-Patent No. 6-29285, US Patent 3,479,185, 4,311,783, 4,622,286, specifically, are mentioned, for example. Is 2,2'-bis (o-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (o-bromophenyl) -4,4', 5,5'-tetraphenylbiimidazole, 2,2'-bis (o, p-dichlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (o -Chlorophenyl) -4,4 ', 5,5'-tetra (m-methoxyphenyl) biimidazole, 2,2'-bis (o, o'-dichlorophenyl) -4,4', 5, 5'-tetraphenylbiimidazole, 2,2'-bis (o-nitrophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (o-methylphenyl)- 4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (o-trifluorophenyl) -4,4', 5,5'-tetraphenylbiimidazole, etc. are mentioned. have.

(r) As an acyl phosphine (oxide) compound, Irgacure 819 by the Chiba Specialty Chemicals company, Tarocure 4265, Darocure TPO, etc. are mentioned.

As the (E) acid / radical generator used in the present invention, from the viewpoint of exposure sensitivity, a trihalomethyl triazine compound, a benzyl dimethyl ketal compound, an α-hydroxy ketone compound, an α-amino ketone compound, an acylphosphine type Compounds, phosphine oxide compounds, metallocene compounds, oxime compounds, triallylimidazole dimers, onium compounds, benzothiazole compounds, benzophenone compounds, acetophenone compounds and derivatives thereof, cyclopentadiene- Preference is given to compounds selected from the group consisting of benzene-iron complexes and salts thereof, halomethyloxadiazole compounds, and 3-aryl substituted coumarin compounds.

In addition, the compound which produces | generates at least one of this (E) acid and a radical can further be heightened by selecting suitably considering the relationship with the compound hardened | cured by at least one of (A) acid and a radical.

As content in the case of using together the (E) acid / radical generator in the curable composition of this invention, it is preferable that it is 0.1-30 mass% with respect to the total solid contained in an inkjet ink, More preferably, it is 0.5-25 mass%. Especially preferably, it is 1-20 mass%. Within this range, a hardened portion can be formed with better sensitivity. In addition, the compound which generates at least one of the said (E) acid and a radical can be used 1 type or in mixture of 2 or more types.

<(F) Binder Polymer>

In the present invention, a binder can be added for the purpose of improving the curability at the time of curing the droplet formed by the inkjet method and curing the droplet on which the image is formed, the strength after curing, and the adhesion with the substrate.

As the binder component, a binder component which is simply dried and solidified by only a resin having no polymerization reactivity may be used. However, in order to give sufficient strength, durability, and adhesiveness to a coating film, after forming the pattern of an ink layer (coating film) on a board | substrate by the inkjet method, the binder component which can harden the ink layer by a polymerization reaction is used. It is preferable to use, and for example, a curable binder component which can be polymerized and cured by light such as visible light, ultraviolet light, electron beam, infrared light, or heating can be used.

In the present invention, a binder having a functional group capable of reacting with an oxetanyl group in the presence of an acid can also be suitably used.

A curable binder component is curable resin which can be polymerized and hardened by light, heating, such as visible light, an ultraviolet-ray, an electron beam, and infrared rays, and if needed, acid and / or a radical, a base, etc. by light and / or heat. The low molecular weight compound etc. which have at least 1, etc. which generate | occur | produce the compound which generate | occur | produces the light, a photosensitizer, curable resin, and a radical polymerizable group, an acid crosslinkable group, etc. can be contained.

It is preferable that curable resin contains a polymer with a comparatively high molecular weight for the purpose of providing film forming property and adhesiveness with respect to a to-be-coated surface. The relatively high molecular weight here means a higher molecular weight than a so-called monomer and oligomer, and can be made into a weight average molecular weight 5,000 or more as a reference. As the polymer having a relatively high molecular weight, any of a polymer having no polymerization reactivity and a polymer having a polymerization reactivity itself may be used, or two or more types may be used in combination.

As a binder polymer, a well-known thing can be suitably selected and used according to the objective. For example, the (F) binder polymer which can be used for this invention can be obtained by combining the monomer group shown below.

(1) 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 3-hydroxypropyl acrylate, 4-hydroxybutyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl meth Acrylic esters and methacrylic acid esters which have aliphatic hydroxyl groups, such as a acrylate, 3-hydroxypropyl methacrylate, and 4-hydroxybutyl methacrylate.

(2) Methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, isobutyl acrylate, amyl acrylate, hexyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, benzyl acrylate, 2-chloroethyl acrylate, glycidyl acrylate, 3 Alkyl acrylates, such as 4-epoxy cyclohexyl methyl acrylate, vinyl acrylate, 2-phenyl vinyl acrylate, 1-propenyl acrylate, allyl acrylate, 2-allyloxy ethyl acrylate, and propargyl acrylate .

(3) Methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, isobutyl methacrylate, amyl methacrylate, hexyl methacrylate, 2-ethylhexyl methacrylate, methacrylic acid Cyclohexyl, benzyl methacrylate, 2-chloroethyl methacrylate, glycidyl methacrylate, 3,4-epoxycyclohexylmethyl methacrylate, vinyl methacrylate, 2-phenylvinyl methacrylate, 1- Alkyl methacrylates, such as propenyl methacrylate, allyl methacrylate, 2-allyloxyethyl methacrylate, and propargyl methacrylate.

(4) Acrylamide, methacrylamide, N-methylol acrylamide, N-ethyl acrylamide, N-hexyl methacrylamide, N-cyclohexyl acrylamide, N-hydroxyethyl acrylamide, N-phenyl acrylamide , N-nitrophenyl acrylamide, N-ethyl-N-phenyl acrylamide, vinyl acrylamide, vinyl methacrylamide, N, N- diallyl acrylamide, N, N- diallyl methacrylamide, allyl acrylamide, Acrylamide or methacrylamide, such as allyl methacrylamide.

(5) Vinyl ethers, such as ethyl vinyl ether, 2-chloroethyl vinyl ether, hydroxyethyl vinyl ether, propyl vinyl ether, butyl vinyl ether, octyl vinyl ether, and phenyl vinyl ether.

(6) Vinyl esters, such as vinyl acetate, vinyl chloro acetate, vinyl butyrate, and a vinyl benzoate.

(7) Styrene, such as styrene, (alpha) -methylstyrene, methylstyrene, chloromethylstyrene, p-acetoxy styrene, and p-carboxy styrene.

(8) Vinyl ketones, such as methyl vinyl ketone, ethyl vinyl ketone, propyl vinyl ketone, and phenyl vinyl ketone.

(9) Olefins, such as ethylene, propylene, isobutylene, butadiene, and isoprene.

(10) N-vinylpyrrolidone, acrylonitrile, methacrylonitrile and the like.

(11) Unsaturated imides, such as maleimide, N-acryloyl acrylamide, N-acetyl methacrylamide, N-propionyl methacrylamide, and N- (p-chlorobenzoyl) methacrylamide.

(12) Methacrylic acid monomers in which a hetero atom is bonded at the α position. For example, the compound described in JP 2001-115595 specification, JP 2001-115598 specification, etc. are mentioned.

(13) methacrylic acid, acrylic acid, itaconic acid, maleic acid, fumaric acid, 2-methacryloyloxyethyl succinic acid, 2-acryloyloxyethyl succinic acid, 2-methacryloyloxyethyl hexahydrophthalic acid, 2 Monomers containing an acid group such as methacryloyloxyethyl phthalic acid, 2-acrylamide-2-methyl-1-propanesulfonic acid, and 3-sulfopropyl methacrylate potassium salt or salts thereof.

Among them, resins containing an allyl group, a glycidyl group, or a reactive group such as a (meth) acryl group or a styryl group are preferable in the side chain for improving the curability.

(Meth) acrylic resins having allyl groups, vinyl ester groups and carboxyl groups in the side chains and alkali-soluble resins having double bonds in the side chains described in Japanese Patent Application Laid-Open Nos. 2000-187322 and 2002-62698; and Japanese Patent Laid-Open No. 2001-242612 Alkali-soluble resin which has an amide group in the side chain described in the publication is suitable for being excellent in the balance of film strength and sensitivity.

Japanese Patent Application Laid-Open Nos. 7-120040, 7-120041, 7-120042, 8-12424, 1363-287944, 63-287947, 1-271741 Urethane-based binder polymers containing acid groups described in Japanese Patent Application Laid-Open No. Hei 10-116232 and the like, and urethane-based binder polymers having acid groups and double bonds described in Japanese Patent Application Laid-Open No. 2002-107918 are very excellent in strength and advantageous.

Moreover, the acetal modified polyvinyl alcohol-type binder polymer which has an acidic radical as described in European patent 993966, European patent 1204000, Unexamined-Japanese-Patent No. 2001-318463, etc. is suitable because it is excellent in the balance of film strength and sclerosis | hardenability.

In addition, as the water-soluble linear organic polymer, polyvinylpyrrolidone, polyethylene oxide and the like are useful. Moreover, in order to raise the intensity | strength of a cured film, alcohol-soluble nylon, the polyether of 2, 2-bis- (4-hydroxyphenyl)-propane, epichlorohydrin, etc. are also useful.

As a weight average molecular weight of the binder polymer which can be used by this invention, Preferably it is 5,000 or more, More preferably, it is the range of 10,000-300,000, About a number average molecular weight, Preferably it is 1,000 or more, More preferably, 2,000 It is the range of -250,000. The polydispersity (weight average molecular weight / number average molecular weight) is preferably 1 or more, more preferably in the range of 1.1 to 10.

These binder polymers may be any of random polymers, block polymers and graft polymers.

The binder polymer which can be used by this invention can be synthesize | combined by a conventionally well-known method. As a solvent used at the time of synthesis, for example, tetrahydrofuran, ethylene dichloride, cyclohexanone, methyl ethyl ketone, acetone, methanol, ethanol, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, 2-methoxy Ethyl acetate, diethylene glycol dimethyl ether, 1-methoxy-2-propanol, 1-methoxy-2-propyl acetate, N, N-dimethylformamide, N, N-dimethylacetamide, toluene, ethyl acetate, lactic acid Methyl, ethyl lactate, dimethyl sulfoxide, water, etc. are mentioned. These solvents are used individually or in mixture of 2 or more types.

As a radical polymerization initiator used when synthesize | combining the binder polymer which can be used by this invention, well-known compounds, such as an azo initiator and a peroxide initiator, are mentioned.

(Photocurable Binder Polymer)

In addition, you may mix | blend a monofunctional monomer and oligomer with the photocurable binder component which has the above-mentioned preferable characteristic as needed. As a monofunctional monomer and oligomer, vinyl monomers, such as styrene and vinyl acetate, and monofunctional acrylic monomers, such as n-hexyl acrylate and phenoxyethyl acrylate, can be illustrated, for example.

In addition, when an acid or a base is generated by the heat-hardening improvement and heat, the following epoxy compound can be used in the range which does not impair the effect of this invention.

When a relatively small molecular weight polyfunctional epoxy compound is added to the curable resin composition, the epoxy group is supplemented in the curable resin composition to increase the reaction point concentration of the epoxy, thereby increasing the crosslinking density.

Among the polyfunctional epoxy compounds, in order to increase the crosslinking density of the acid-epoxy reaction, it is preferable to use an epoxy compound having four or more epoxy groups in one molecule. In particular, when the curable resin composition of the present invention is used in an inkjet method, when the weight average molecular weight of the binder epoxy compound is set to 10,000 or less in order to improve the ejectability from the inkjet discharge head, the cured resin layer Since strength and hardness are easy to fall, it is preferable to mix | blend such tetrafunctional or more polyfunctional epoxy compound with curable resin composition, and to raise a crosslinking density fully.

The polyfunctional epoxy compound is not particularly limited as long as it contains two or more epoxy groups in one molecule, and examples thereof include bisphenol A type epoxy resins, bisphenol F type epoxy resins, brominated bisphenol A type epoxy resins, bisphenol S type epoxy resins, Diphenyl ether type epoxy resin, hydroquinone type epoxy resin, naphthalene type epoxy resin, biphenyl type epoxy resin, fluorene type epoxy resin, phenol novolak type epoxy resin, orthocresol novolak type epoxy resin, trishydroxyphenylmethane Type epoxy resin, trifunctional epoxy resin, tetraphenylolethane type epoxy resin, dicyclopentadiene phenol type epoxy resin, hydrogenated bisphenol A type epoxy resin, bisphenol A nucleated polyol type epoxy resin, polypropylene Glycol type epoxy resin, glycidyl ester type epoxy resin, glycidyl amine type epoxy water , May be used glycidyl octanoic salhyeong epoxy resin, alicyclic epoxy resin, heterocyclic epoxy resin such as annular.

More specifically, bisphenol A type epoxy resins, such as a brand name Epicoat 828 (made by Yuka shell epoxy company), brand name YDF-175S (made by Toto Kasei Co., Ltd.), brand name YDB-715 (made by Toto Kasei Co., Ltd.) Brominated bisphenol A type epoxy resins, such as, bisphenol S type epoxy resins, such as brand name Epiclone EXA1514 (made by Dainippon Ing. Kagaku Kogyo Co., Ltd.), hydroquines, such as brand name YDC-1312 (made by Toto Kasei Co., Ltd.) Naphthalene type epoxy resins, such as a non-type epoxy resin, brand name Epiclone EXA4032 (made by Dainippon Ing. Kagaku Kogyo Co., Ltd.), and biphenyl type epoxy resins, such as brand name Epicoat YX4000H (made by Yuka shell epoxy company), brand name Epicoat 157S70 (Yuka) Phenolic novolak-type epoxy, such as bisphenol-A novolak-type epoxy resins, such as the shell epoxy company), brand name epicoat 154 (made by Yucca shell epoxy company), brand name YDPN-638 (made by Toto Kasei Co., Ltd.) Cresol novolac-type epoxy resins such as YDCN-701 (manufactured by Toto Kasei Co., Ltd.), dicyclopentadiene phenol-type epoxy resins such as epiclon HP-7200 (manufactured by Dainippon Ing. Tetraphenyl such as trishydroxyphenylmethane type epoxy resins such as Epicoat 1032H60 (manufactured by Yuka Shell Epoxy), trade name VG3101M80 (manufactured by Mitsui Chemicals, Inc.), and tetraphenyls such as brand name Epicoat 1031S (manufactured by Yuka Shell Epoxy) Hydrogenated bisphenol A type epoxy resin, such as an all-ethane type epoxy resin, brand name denacol EX-411 (made by Nagase Kasei Kogyo Co., Ltd.), brand name ST-3000 (made by Toto Kasei Co., Ltd.), brand name epicoat 190P Glycidyl ester type epoxy resins, such as (made by Yuka shell epoxy company), Glycidyl amine type epoxy resins, such as brand name YH-434 (made by Toto Kasei Co., Ltd.), brand names YDG-414 (made by Toto Kasei Co., Ltd.), etc. Heterocyclic type epoxy resins, such as an alicyclic polyfunctional epoxy compound, such as a lipoxal type epoxy resin, brand name Epolyd GT-401 (made by Daicel Chemical Co., Ltd.), and triglycidyl isocyanate (TGIC), etc. are mentioned. Moreover, if necessary, brand name Neoto E (made by Toto Kasei Co., Ltd.) etc. can be mixed as an epoxy reactive diluent. Among these polyfunctional epoxy compounds, bisphenol A novolac epoxy resins such as Epicoat 157S70 (manufactured by Yuka Shell Epoxy Co., Ltd.), and cresol novolac epoxy resins such as brand name YDCN-701 (manufactured by Tohto Kasei Co., Ltd.) are particularly preferable. Do.

As an epoxy compound (henceforth a "binder-type epoxy compound") which is a polymer with a comparatively high molecular weight, it is comprised by the structural unit represented by the following formula (1) and the structural unit represented by the following formula (2) at least, Moreover, the polymer which has two or more glycidyl groups can be used.

(R ¹ is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R ² is a hydrocarbon group having 1 to 12 carbon atoms.)

(R ³ is a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.)

The structural unit represented by Formula (1) is derived from the monomer represented by following formula (3).

(R ¹ and R ² are the same as in formula (1).)

By using the monomer represented by Formula (3) as a structural unit of a binder epoxy compound, sufficient hardness and transparency can be provided to the cured coating film formed from the curable resin composition of this invention. In formula (3), R <^2> is a C1-C12 hydrocarbon group, and may be a hydrocarbon group of any linear aliphatic, alicyclic, or aromatic, and also has an additional structure, such as a double bond, a side chain of a hydrocarbon group, and a spiro ring. The side chain and the ring-crosslinked hydrocarbon group may be further included.

Specifically as a monomer represented by the said Formula (3), methyl (meth) acrylate, ethyl (meth) acrylate, i-propyl (meth) acrylate, n-propyl (meth) acrylate, i-butyl ( Meth) acrylate, n-butyl (meth) acrylate, t-butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, hexyl (meth) acrylate, octyl (meth) acrylate, lauryl ( Meta) acrylate, cyclohexyl (meth) acrylate, para-t-butylcyclohexyl (meth) acrylate, isobornyl (meth) acrylate, benzyl (meth) acrylate, dicyclopentenyl (meth) acrylic The rate, phenyl (meth) acrylate, etc. can be illustrated.

In formula (3), preferred as R ¹ is hydrogen or a methyl group, preferred as R ² is an alkyl group having 1 to 12 carbon atoms, and among these, a methyl group and a cyclohexyl group are particularly preferable. As a preferable thing in the monomer represented by said formula (3), methyl methacrylate (MMA) and cyclohexyl methacrylate (CHMA) are mentioned specifically ,.

The structural unit represented by Formula (2) in a polymer is derived from the monomer represented by following formula (4).

(R ³ is the same as that in Formula (2).)

The monomer represented by Formula (4) is used in order to introduce an epoxy group (reaction point of epoxy) in a polymer. Curable resin composition containing the said polymer is excellent in storage stability, and it is difficult to raise a viscosity during storage and discharge operation, The reason for this is presumed that the epoxy group in Formula (2) or Formula (4) is glycidyl group. do. When alicyclic epoxy acrylate is used instead of the monomer represented by Formula (4), the viscosity of curable resin composition will rise easily. In Formula (4), what is preferable as R <^3> is hydrogen or a methyl group. As a monomer represented by Formula (4), glycidyl (meth) acrylate can be illustrated specifically, Especially, glycidyl methacrylate (GMA) is preferable.

The polymer may be a random copolymer or a block copolymer. Moreover, the said polymer contains main chain structural units other than Formula (1) or Formula (2) so long as the performance required for each detail of a color filter, for example, hardness, transparency, etc. can be ensured, You may be. Specifically as such a monomer, acrylonitrile, styrene, etc. can be illustrated.

Content of the structural unit of Formula (1) and the structural unit of Formula (2) in the said binderic epoxy compound is the charge of the monomer which guides the structural unit of Formula (1), and the monomer which guides the structural unit of Formula (2). When represented by a weight ratio (monomer which derives Formula (1): monomer which derives Formula (2)), it is preferable to exist in the range of 10: 90-90: 10. When the quantity of the structural unit of Formula (1) is more than the said ratio 10:90, there exists a possibility that the reaction point of hardening may become small and a crosslinking density may become low, while the quantity of the structural unit of Formula (2) is the said ratio 90: When it is excessive than 10, there is a fear that the bulk skeleton is reduced and the curing shrinkage is increased.

In addition, the weight average molecular weight of the binder epoxy compound is preferably 3,000 or more, particularly 4,000 or more, when expressed in terms of polystyrene reduced weight average molecular weight. If the molecular weight of the binder epoxy compound is less than 3,000, it is because physical properties such as strength, solvent resistance, etc. required for the cured resin layer as details of the color filter tend to be insufficient. In addition, since the ink according to the present invention is used in the inkjet method, the weight average molecular weight of the binder epoxy compound is preferably 20,000 or less, and particularly preferably 15,000 or less when expressed in terms of polystyrene-weighted average molecular weight. It is because when the molecular weight is larger than 20,000, a viscosity rise will occur easily, and there exists a possibility that the stability of the discharge amount at the time of discharge from a discharge head, the linearity of a discharge direction may worsen, and the stability of a long term storage may worsen.

As the binder epoxy compound, it is particularly preferable to use a glycidyl methacrylate (GMA) / methyl methacrylate (MMA) copolymer having a polystyrene reduced weight average molecular weight (Mw) in the above range. In addition, as long as the GMA / MMA type copolymer can achieve the objective of this invention, it may contain the other monomer component.

As a synthesis example of the said binder epoxy compound, the solvent which does not contain a hydroxyl group is charged to the four neck flask provided with the thermometer, the reflux condenser, the stirrer, and the dropping funnel, for example, and it heats up at 120 degreeC, stirring. The solvent which does not contain a hydroxyl group is used in order to avoid that an epoxy group decomposes in the middle of a synthesis reaction. Subsequently, a dropping funnel was added to the mixture (dropping component) of the monomer represented by the formula (3), the monomer represented by the formula (4) and, if necessary, a composition in which another monomer was combined and a polymerization initiator. Dropping at constant speed from After completion of the dropwise addition, the bindery epoxy compound is obtained by lowering the temperature to 120 ° C, adding a catalyst, reacting for 3 hours, and terminating the reaction when the temperature is raised to 130 ° C and maintained for 2 hours. To the thermosetting binder component used in the present invention, an epoxy compound having two or more epoxy groups in one molecule, which has a molecular weight smaller than that of the binder epoxy compound (hereinafter may be referred to as a "polyfunctional epoxy compound") is added. It is desirable to. The polystyrene reduced weight average molecular weight of the polyfunctional epoxy compound is preferably 4,000 or less, particularly preferably 3,000 or less, provided that it is smaller than the binder epoxy compound combined with this.

In addition, the polystyrene conversion weight average molecular weight of an epoxy compound can be calculated | required by GPC (gel permeation chromatography), As measurement conditions, for example, using tetrahydrofuran as a developing solution, HLC-8029 (made by Toso Corporation) Can be measured using.

(Hardener)

The photocurable binder component and thermosetting binder component which can be used for this invention can be mix | blended in combination with a hardening | curing agent as needed. As a hardening | curing agent, polyhydric carboxylic anhydride or polyhydric carboxylic acid is used, for example. Specific examples of the polycarboxylic acid anhydride include phthalic anhydride, itaconic anhydride, succinic anhydride, citraconic anhydride, dodecenyl succinic anhydride, tricarvalic acid anhydride, maleic anhydride, hexahydrophthalic anhydride, dimethyltetrahydrophthalic anhydride, and high anhydride. Aliphatic or cycloaliphatic dicarboxylic anhydrides such as carboxylic acid and nadic anhydride; Aliphatic polyhydric carboxylic acid dianhydrides such as 1,2,3,4-butanetetracarboxylic dianhydride and cyclopentane tetracarboxylic dianhydride; Aromatic polyhydric carboxylic acid anhydrides such as pyromellitic anhydride, trimellitic anhydride, and benzophenonetetracarboxylic anhydride; Ester group containing acid anhydrides, such as ethylene glycol bistrimellitate and glycerol tristrimellitate, Especially preferably, aromatic polyhydric carboxylic anhydride is mentioned. Moreover, the epoxy resin hardener which consists of commercially available carboxylic anhydride can also be used suitably.

Specific examples of the polyvalent carboxylic acid used as the curing agent in the present invention include aliphatic polyvalent carboxylic acids such as succinic acid, glutaric acid, adipic acid, butanetetracarboxylic acid, maleic acid and itaconic acid; Aliphatic polycarboxylic acids such as hexahydrophthalic acid, 1,2-cyclohexanedicarboxylic acid, 1,2,4-cyclohexanetricarboxylic acid, cyclopentanetetracarboxylic acid, and phthalic acid, isophthalic acid, terephthalic acid, pyromellitic acid, trimellitic acid, Aromatic polyhydric carboxylic acids, such as 1,4,5,8-naphthalene tetracarboxylic acid and benzophenone tetracarboxylic acid, are mentioned, Preferably, aromatic polycarboxylic acid is mentioned.

These polyhydric carboxylic anhydrides and polyhydric carboxylic acids can be used individually by 1 type or in mixture of 2 or more types.

It is preferable that the compounding quantity of the hardening | curing agent used for this invention is a range of 1-100 weight part normally per 100 weight part of components (monomer and resin) containing an epoxy group, and the effect of sufficient hardenability improvement is acquired in this range, and it is tough While the coating film can be formed, the adhesion of the coating film to the substrate, the uniformity of the coating film, and the smoothness are not impaired. The compounding quantity is more preferably 5 to 50 parts by weight. When the addition amount of a hardening | curing agent is too small, an effective hardening property improvement effect will not be acquired.

In addition, in this invention, in order to improve the hardness and heat resistance of a cured resin layer, you may add the catalyst which can accelerate | stimulate the thermosetting reaction between acid-epoxy to the thermosetting binder component. As such a catalyst, an initiator showing activity at the time of heat curing can be used.

Moreover, it is also preferable to use what has a cinnamil group, a maleimide group, a dimethylmaleimide group, etc. which a functional group can be dimerized by light, or use together the compound which has these functional groups as binder resin.

<Other ingredients>

The additive which can be used for the inkjet ink of this invention other than the said (E) acid / radical generator and (F) binder polymer which is a preferable combined component is demonstrated.

(Sensitizer)

In the binder component, if necessary, a sensitizer may be contained for the purpose of improving the decomposition efficiency of the initiator and increasing the wavelength of the photosensitive wavelength. As a sensitizer which can be used for this invention, it is preferable to sensitize with an electron transfer mechanism or an energy transfer mechanism with respect to said photoinitiator.

As a sensitizer which can be used for this invention, it belongs to the compounds listed below, The sensitizer which responds to desired light, such as lights, such as visible light, an ultraviolet-ray, an electron beam, and an infrared ray, can be used. As an example of a preferable sensitizer, what belongs to the following compounds, and has an absorption wavelength in 330 nm-450 nm region is mentioned.

For example, polynuclear aromatics (e.g., phenanthrene, anthracene, pyrene, perylene, triphenylene, 9,10- dialkoxyanthracene), xanthenes (e.g., fluorescein, eosin, erythrosine , Rhodamine B, rose bengal), thioxanthones (isopropyl thioxanthone, diethyl thioxanthone, chlorothioxanthone), cyanines (for example, thiacarbocyanine, oxacarbocyanine), Merocyanines (e.g. merocyanine, carbomerocyanine), phthalocyanines, thiazines (e.g. thionine, methylene blue, toluidine blue), acridines (e.g. acridine Dean orange, chloroflavin, acriflavin), anthraquinones (e.g., anthraquinones), squaryliums (e.g., squarylium), acridine oranges, coumarins (e.g., 7 -Diethylamino-4-methylcoumarin), ketocoumarin, phenothiazines, phenazines, styrylbenzenes, azo compounds, Phenylmethane, triphenylmethane, distyrylbenzenes, carbazoles, porphyrins, spiro compounds, quinacridones, indigo, styryls, pyryllium compounds, pyrromethene compounds, pyrazolotriazole compounds, benzothiazole compounds, barbi Aromatic ketone compounds, such as a tournic acid derivative, a thiobarbituric acid derivative, acetophenone, benzophenone, thioxanthone, a Michler's ketone, heterocyclic compounds, such as N-aryl oxazolidinone, etc. are mentioned, European Patent No. 568,993 And the compounds described in US Patent No. 4,508,811, Japanese Patent No. 5,227,227, Japanese Patent Laid-Open No. 2001-125255, Japanese Patent Laid-Open No. Hei 11-271969, and the like.

Gong sensitizer

It is also preferable to contain a sensitizer in a binder component. In the present invention, the sensitizer has an action of further improving the sensitivity of the sensitizing dye and the initiator to the actinic radiation, or inhibiting the inhibition of polymerization of the polymerizable compound by oxygen.

Examples of such co-sensitizers include amines such as M.R. Sander et al., Journal of Polymer Society, Vol. 10, page 3173 (1972), JP 44-20189, JP 51-82102, JP 52-134692, JP 59-138205. The compound of Unexamined-Japanese-Patent No. 60-84305, Unexamined-Japanese-Patent No. 62-18537, Unexamined-Japanese-Patent No. 64-33104, Research Disclosure 33825, etc. are mentioned, Specifically, triethanolamine and p-dimethylaminobenzoic acid are mentioned. Ethyl ester, p-formyldimethylaniline, p-methylthiodimethylaniline, and the like.

As another example of a sensitizer, thiols and sulfides, for example, the thiol compounds described in Japanese Patent Application Laid-Open No. 53-702, Japanese Patent Application Laid-Open No. 55-500806, and Japanese Patent Application Laid-Open No. 5-142772, Japanese Patent Application Laid-Open No. 56-75643 The disulfide compound etc. of a publication are mentioned, Specifically, 2-mercaptobenzothiazole, 2-mercaptobenzoxazole, 2-mercaptobenzoimidazole, 2-mercapto-4 (3H) -quina Sleepy, (beta) -mercaptonaphthalene, etc. are mentioned.

In addition, as another example of a sensitizer, an amino acid compound (for example, N-phenylglycine), the organometallic compound (for example, tributyltin acetate, etc.) of Unexamined-Japanese-Patent No. 48-42965, Unexamined-Japanese-Patent No. 55-34414 The hydrogen donor of description, the sulfur compound (for example, tritian etc.) of Unexamined-Japanese-Patent No. 6-308727, etc. are mentioned.

As for content of these co-sensitizers, the range of 0.1-30 mass% is preferable with respect to the mass of the total solid of a curable composition from a viewpoint of the hardening speed improvement by the balance of a polymerization growth rate and a chain transfer, and is 1-25 mass% The range is more preferable, and the range of 0.5-20 mass% is more preferable.

(Polymerization inhibitor)

In the binder component, it is preferable to add a small amount of thermal polymerization inhibitor in order to prevent unnecessary thermal polymerization of the compound having an ethylenically unsaturated double bond which is polymerizable during production or storage of the curable composition.

As the thermal polymerization inhibitor that can be used in the present invention, hydroquinone, p-methoxyphenol, di-t-butyl-p-cresol, pyrogallol, t-butylcatechol, benzoquinone, 4,4'-thiobis ( 3-methyl-6-t-butylphenol), 2,2'-methylene bis (4-methyl-6-t-butylphenol), N-nitrosophenylhydroxyamine 1st cerium salt, etc. are mentioned.

As for the addition amount of a thermal polymerization inhibitor, about 0.01 mass%-about 5 mass% are preferable with respect to the mass of all compositions. Moreover, in order to prevent the polymerization inhibition by oxygen, you may add higher fatty acid derivatives, such as behenic acid and behenic acid amide, etc., and may make it localize on the photosensitive layer surface in the drying process after application | coating. As for the addition amount of a higher fatty acid derivative, about 0.5 mass%-about 10 mass% of a precursor composition are preferable.

(Other additives)

Moreover, in this invention, in order to improve the physical property of a cured film, an inorganic filler, a plasticizer, 2, 2- thiobis (4-methyl-6- t-butyl phenol), 2, 6- di- t- butyl phenol, etc. Aggregation of an antioxidant, ultraviolet absorber such as 2- (3-t-butyl-5-methyl-2-hydroxyphenyl) -5-chlorobenzotriazole, alkoxybenzophenone, sodium polyacrylate, or various surfactants You may add well-known additives, such as an inhibitor.

Examples of the plasticizer include dioctyl phthalate, didodecyl phthalate, triethylene glycol dicaprylate, dimethyl glycol phthalate, tricresyl phosphate, dioctyl adipate, dibutyl sebacate, triacetylglycerine, and the like. In the case, 10 mass% or less can be added with respect to the total mass of a compound and an binder which have an ethylenically unsaturated double bond.

The curable composition of the present invention is cured with high sensitivity, and storage stability is also good. Moreover, high adhesiveness to the surface of hard materials, such as a board | substrate which applies a curable composition, is shown.

Therefore, the curable composition of this invention can be used suitably in the field of image forming materials, an ink, a coating material, an adhesive agent, a coating agent, etc.

(Production method of ink)

The inkjet ink for color filters of this invention may be prepared by injecting and mixing each component into the solvent, and dissolving or dispersing the solid component. However, when a pigment is directly added to the whole solvent with other components, such as a binder, and stirred and mixed, in many cases, a pigment will not fully disperse in a solvent. Therefore, the solvent which is excellent in the dispersibility and dispersion stability of a pigment is normally prepared, a pigment is added to it with a pigment dispersant as needed, and it fully stirs by a dissolver etc., and manufactures a pigment dispersion liquid. And the obtained pigment dispersion liquid is added to the solvent which consists of a main solvent or the main solvent only with components other than a pigment, and it fully stirs and mixes with a dissolver etc., and finally adds an alkane type solvent, You can do it with inkjet ink. Or the obtained pigment dispersion liquid is added to the mixed solvent which added the alkane solvent to the solvent which consists of a main solvent substantially or consists only of a main solvent with components other than a pigment, and fully stirred and mixed by a dissolver etc., and in this invention According to the inkjet ink.

The inkjet ink for color filters of the present invention obtained as described above is particularly suitably used for forming a film having a predetermined pattern such as a pixel or a black matrix in a color filter.

As a color filter formed by the inkjet ink of this invention, it can use suitably any of the color filter used for image output apparatuses, such as a liquid crystal display device, or the color filter used for image input apparatuses, such as a solid-state image sensor. .

<Color filter and its manufacturing method>

The method for manufacturing a color filter of the present invention is characterized in that a pixel is formed by imparting droplets of the ink of the present invention by an inkjet method to a recess surrounded by a partition formed on a substrate.

In the method for producing a color filter of the present invention, a process of forming a pixel by applying the above-described ink of the present invention by an inkjet method to a recess surrounded by a partition wall (hereinafter, referred to as a "pixel forming process") Preferably, it further has a hardening process of hardening the formed pixel of at least 1 color by irradiation of an active energy ray, or the hardening process of hardening by heat after forming all the pixels of a desired color, and baking process etc. as needed. Other processes can be prepared and configured.

In addition, a partition is formed in advance on a board | substrate before a pixel formation process, The detail of the formation method of a partition is mentioned later.

Pixel forming process

In the pixel forming step, the droplets of the ink of the present invention are applied to the recesses between the partition walls (color lightening walls) by the inkjet method to form pixels. These pixels become color pixels such as red (R), green (G), and blue (B) constituting the color filter.

The pixel is formed by injecting inkjet ink for forming a pixel (for example, a pixel pattern of RGB tricolor) into a recess surrounded by a partition formed on the substrate as described above, and forming a plurality of pixels. It can be configured to be configured.

As for the inkjet method, known methods such as a method of thermosetting ink, a photocuring method, and a method of forming a transparent aqueous phase layer on a substrate in advance and then performing the method can be used.

The shape of the color filter pattern is not particularly limited, and may be a black stripe shape, a general stripe shape, a lattice shape, or a delta array shape.

As the inkjet method, a method of continuously spraying charged inkjet ink and controlling it by electric field, a method of intermittently spraying ink using a piezoelectric element, a method of heating ink and intermittently spraying using the foaming Various methods, such as these, can be employ | adopted.

As the injection conditions of the inkjet ink, it is preferable from the viewpoint of injection stability that the inkjet ink is heated to 30 to 60 ° C to lower the ink viscosity to inject. Since inkjet inks generally have higher viscosity than aqueous inks, the variation in viscosity due to temperature fluctuation is large. It is important to keep the inkjet ink temperature as constant as possible because the viscosity fluctuation greatly affects the droplet size and the droplet injection speed, and is likely to cause deterioration of image quality.

A well-known thing can be applied to an inkjet head (henceforth a head hereafter), and a continuous type and a dot on demand type can be used. Among the dot and demand types, in the thermal head, a type having a movable valve described in JP-A 9-323420 is preferable for discharge. As the piezo head, for example, heads described in European Patent A277,703, European Patent A278,590 and the like can be used. Among these, the piezo head is more preferable because the influence of heat on the inkjet ink can be reduced and the selection of organic solvents that can be used is wide. The head preferably has a temperature control function so as to manage the temperature of the ink. It is preferable to set the injection temperature so that the viscosity at the time of injection may be 5-25 mPa * s, and to control ink temperature so that the fluctuation range of a viscosity may be within +/- 5%. Moreover, it is preferable to operate at 1-500 kHz as a drive frequency. The nozzle shape does not necessarily need to be circular, and is not limited to shapes such as ellipses and rectangles. The nozzle diameter is preferably in the range of 10 to 100 mu m. In addition, although the opening part of a nozzle itself is not necessarily limited to a circular shape, a nozzle diameter in that case assumes the circle equivalent to the opening area, and makes it the diameter.

In the present invention, the color filter is preferably formed of a group consisting of three colored layers by spraying RGB tricolor ink.

In this invention, after removing the organic solvent contained in a droplet and making it into an ink residue, the process of irradiating an active energy ray to the said ink residue (henceforth a 1st hardening process) and / or the said ink residue You may superpose | polymerize the said ink remainder by the process of heating (henceforth a 2nd hardening process), and may form a pixel. In addition, when the temperature at which the thermal polymerization of the ink remainder is started is T ° C., preheating (hereinafter sometimes referred to as a preheating step) is performed at a temperature below T ° C. to remove the organic solvent contained in the droplets. The remaining ink may be polymerized by forming a pixel by the step of irradiating active energy rays to the remaining ink and / or heating the remaining ink at a temperature of T ° C or higher.

Hereinafter, a 1st hardening process, a 2nd hardening process, and a preheating process are demonstrated.

First Curing Process

A step (first curing step) of irradiating and curing an active energy ray to at least one pixel formed in the pixel forming step may be provided. In the 1st hardening process, the hardened pixel can be formed by hardening the ink of this invention of each color containing red (R), green (G), and blue (B). Hardening may be performed every time one pixel of one color is formed, or may be performed after forming a plurality of color pixels.

The ink curing of the present invention, such as R, G, and B, can be performed by performing exposure treatment to promote polymerization curing using an energy source that emits an active energy ray in a wavelength region corresponding to the photosensitive wavelength of the ink.

As the energy source, for example, the above-described polymerization initiator such as ultraviolet rays, deep ultraviolet rays, g-rays, h-rays, i-rays, KrF excimer laser light, ArF excimer laser light, electron beams, X-rays, molecular beams, or ion beams, for example. Can be appropriately selected and used. Specifically, a light source that emits active light in the wavelength range of 250 to 450 nm, preferably 365 ± 20 nm, for example, LD, LED (light emitting diode), fluorescent lamp, low pressure mercury lamp, high pressure mercury lamp, metal halide lamp, carbon It can carry out suitably using an arc lamp, a xenon lamp, a chemical lamp, etc. Preferred light sources include LEDs, high pressure mercury lamps, and metal halide lamps.

As irradiation time of an active energy ray, although it can set suitably according to the combination of a monomer and a polymerization initiator, it can be set to 1 to 30 second, for example.

Second Curing Process

In the manufacturing method of the color filter of this invention, the process (2nd hardening process) which hardens all the pixels of desired color by heat including red (R), green (G), and blue (B) can be provided. have. As mentioned above, by providing the said 1st hardening process and providing a 2nd hardening process, the manufacturing efficiency of a color filter and display characteristics can be made compatible. Moreover, you may harden only by a 2nd hardening process.

In this process, the pixel and the partition which have a desired color are formed, and after performing the said 1st hardening process, heat processing (so-called baking process) can be further performed and hardening by heat can be performed. That is, the board | substrate with which the pixel and the partition wall which were photopolymerized by light irradiation can be heated in an electric furnace, a dryer, etc., or can be heated by irradiating an infrared lamp.

The heating temperature and the heating time at this time depend on the composition of the inkjet ink and the thickness of the pixel, but in general, from about 10 minutes to about 120 ° C to about 250 ° C from the viewpoint of ensuring sufficient solvent resistance, alkali resistance, and ultraviolet absorbance. It is preferred to heat for about 120 minutes.

Moreover, in the manufacturing method of the color filter using the ink of this invention, you may provide a preheating process, before superposing | polymerizing a pixel by exposure and / or heat processing of an active energy ray. Although the heating temperature in a preheating process does not have a restriction | limiting in particular, When the temperature which thermal-polymerization of a pixel starts is T degreeC, the temperature which is less than T degreeC and the temperature which superposition | polymerization of a pixel part does not occur is preferable, 50 degreeC or more and 100 degrees C or less. More preferably, 60 degreeC or more and 90 degrees C or less are more preferable. By incorporating the above step, evaporation of the organic solvent in the ink imparted by the inkjet method is promoted, the color filter can be efficiently produced, and the viscosity of the ink residue is lowered by heat, so that higher fluidity is obtained. Thus, a color filter having a high flat pixel portion can be obtained.

The preheating step is effective not only for the ink in which the pixel portion is polymerized by heat but also in the ink in which the ink is polymerized as long as the ink residue has fluidity as in the present invention. In the case of the ink polymerized by light, the temperature T at which the ink starts thermal polymerization is a temperature at which the photopolymerization initiator is decomposed by heat to initiate the polymerization reaction, or a temperature at which the monomer itself is decomposed by heat to initiate the polymerization reaction. Means.

Although the time of the said preheating process does not have a restriction | limiting in particular, It is preferable to carry out for 1 to 5 minutes.

The temperature T can be obtained as follows.

The temperature at which the ink is heated, the polymerization of the ink is started by heating, and the gelation of the ink is observed is referred to as T. More specifically, the heating temperature when the increase in the ink viscosity after heating is 5 mPa · s or more with respect to the ink viscosity before heating is referred to as T.

In the manufacturing method of the color filter using the ink of this invention, it is preferable to perform the said pixel formation process, a preheating process, a 1st hardening process, and a 2nd hardening process within 24 hours, It is more preferable to carry out within 12 hours, It is more preferable to carry out within 6 hours. By performing the formation from the pixel to the final curing step (second curing step) within 24 hours, aggregation of pigments in the ink, precipitation of various binders, and the like can be prevented, and the surface state of the pixel can be improved.

(septum)

In the present invention, pixels are formed by imparting droplets of the ink of the present invention to the recesses surrounded by the partitions formed on the substrate by the inkjet method. This partition may be any, but when producing a color filter, it is preferable that it is a partition which has the light-shielding property which has the function of a black matrix. The partition can be manufactured by a material and a method similar to the well-known black matrix for color filters. For example, paragraphs [0021] to [0074] of Japanese Patent Laid-Open No. 2005-3861, the black matrix described in paragraphs [0012] to [0021] of Japanese Patent Laid-Open No. 2004-240039, and Japanese Patent Laid-Open No. 2006-17980 The black matrix for inkjets of Paragraph No. [0015]-[0020] of Unexamined Publication, and Paragraph No. [0009]-[0044] of Unexamined-Japanese-Patent No. 2006-10875 are mentioned.

Moreover, the thing which used the light shielding component as a coloring agent in the inkjet ink of this invention can be manufactured, and a black matrix can also be produced using this.

Among the above known production methods, it is preferable to use a photosensitive resin transfer material from the viewpoint of cost reduction. The photosensitive resin transfer material is provided with a resin layer having at least light shielding property on the temporary support, and can be pressed onto a substrate to transfer the resin layer having the light shielding property to the substrate.

It is preferable to form the photosensitive resin transfer material using the photosensitive resin transfer material described in Unexamined-Japanese-Patent No. 5-72724, ie, an integral film. As a structural example of this integrated film, a branch support / thermoplastic resin layer / intermediate | middle layer / photosensitive resin layer (In this invention, "photosensitive resin layer" means resin which can be hardened by light irradiation, and when it has light-shielding property, The resin layer which has photosensitivity ", and when it is colored by a desired color, also called the" colored resin layer "), the structure which laminated | stacked the protective film in this order is mentioned.

About the branch body which comprises the photosensitive resin transfer material, a thermoplastic resin layer, an intermediate | middle layer, a protective film, and the manufacturing method of a transfer material, what was described in Paragraph No. [0023]-[0066] of Unexamined-Japanese-Patent No. 2005-3861 is suitable. Can be mentioned.

In addition, the barrier rib may be subjected to ink repelling treatment in order to prevent mixing of inkjet ink. About the ink repulsion process, for example, (1) the method of penetrating an ink repellent substance into a partition (for example, refer Unexamined-Japanese-Patent No. 2005-36160), (2) the method of newly providing an ink repellent layer ( For example, see Japanese Unexamined Patent Application Publication No. 5-241011), (3) A method of imparting ink repellency by plasma treatment (see, for example, Japanese Unexamined Patent Application Publication No. 2002-62420), (4) a partition wall The method of apply | coating an ink repellent material to an upper surface (for example, see Unexamined-Japanese-Patent No. 10-123500) etc. is mentioned, In particular, (3) The method of performing the ink repelling process by plasma to the partition formed on the board | substrate. This is preferred.

After forming a pixel and a partition and manufacturing a color filter as mentioned above, an overcoat layer can be formed so that the whole surface of a pixel and a partition may be covered for the purpose of a tolerance improvement.

The overcoat layer can protect the pixels and partition walls such as R, G, and B and at the same time smooth the surface. However, it is preferable not to provide in the point which process number increases.

An overcoat layer can be comprised using resin (made by OC), and an acrylic resin composition, an epoxy resin composition, a polyimide resin composition etc. are mentioned as resin (made by OC). Especially, since it is excellent in transparency in visible region, and the resin component of the inkjet ink for color filters has an acrylic resin as a main component, and is excellent in adhesiveness, an acrylic resin composition is preferable. As an example of an overcoating layer, Optomer SS6699G by JSR Corporation can be mentioned as what is described in Paragraph No. 0018 of Unexamined-Japanese-Patent No. 2003-287618, and a commercial item of an overcoating agent.

The color filter of this invention was produced by the manufacturing method of the color filter of this invention which was already described, For example, portable terminals, such as a television, a personal computer, a liquid crystal projector, a game machine, a mobile phone, a digital camera, car navigation, etc. The present invention can be suitably applied without any limitation on the use. In the color filter of this invention, at least one of color pixels, such as red (R), green (G), blue (B), should just be formed by the ink of this invention.

<Display device>

The display device of the present invention is not particularly limited as long as the display device includes the color filter of the present invention described above, and examples thereof include a liquid crystal display device, a plasma display display device, an EL display device, and a display device such as a CRT display device. Definition of a display apparatus and description of each display apparatus are described, for example, "Electronic display device (Aki Sasaki-Ko, Industrial Co., Ltd., 1990 issuance)", "Display device (Ibuki Sumaki-Ki, Industrial book" ), Issued in 1989).

Among the display devices of the present invention, liquid crystal display devices are particularly preferable. About a liquid crystal display device, it describes in the "next-generation liquid crystal display technology (Tatsuo Uchida editing, industrial co., Ltd., 1994 issuance)", for example. There is no restriction | limiting in particular in the liquid crystal display device which can apply this invention, For example, it can apply to the liquid crystal display device of various systems described in said "next-generation liquid crystal display technology." The present invention is particularly effective in the liquid crystal display device of the color TFT system among these. About the liquid crystal display device of a color TFT system, it describes in a "color TFT liquid crystal display (public publication Co., Ltd., 1996 issuance), for example. Furthermore, the present invention can be applied to a liquid crystal display device having an enlarged viewing angle, such as a transverse electric field driving method such as IPS and a pixel division method such as MVA. These methods are described, for example, on page 43 of EL, PDP, and LCD Displays-Recent Trends in Technology and Markets (Torre Research Center Research and Research, 2001).

In addition to the color filter, the liquid crystal display device includes various members such as an electrode substrate, a polarizing film, a retardation film, a backlight, a spacer, and a viewing angle compensation film. For these members, for example, "The Market of '94 Liquid Crystal Display Peripherals and Chemicals (Gen. Shima Gentaro, CMC, 1994)", "The Present Status and Future Prospects of the 2003 Liquid Crystal Market," (Omote Ryokichi, Fujikimera Research Institute, 2003).

The display device according to the present invention is electrically controlled irefringence (ECB), twisted nematic (TN), in-plane switching (IPS), ferroelectric liquid crystal (FLC), operatively compensated bend (OCB), supper twisted nematic (STN), and VA (VA). Various display modes such as Vertically Aligned (Hybrid Aligned), HAN (Hybrid Aligned Nematic), and GH (Guest Host) can be adopted. The display device of the present invention is characterized by the above-described color filter, whereby it can have a wide color reproduction area and a high contrast ratio without display unevenness when mounted on a television or a monitor. The display device of the present invention can be suitably used also for a large display device such as a television monitor.

EXAMPLE

Hereinafter, although an Example demonstrates this invention further more concretely, it is not limited to a following example. In addition, "%" and "part" are mass references | standards unless there is particular notice.

EXAMPLES 1-4, COMPARATIVE EXAMPLE 1

(Production of deep color composition K1 for partition formation)

The rich color composition K1 first weighs the K pigment dispersion 1 and propylene glycol monomethyl ether acetate in the amounts shown in Table 1, mixes the mixture at a temperature of 24 ° C (± 2 ° C) for 10 minutes at 150 rpm, and further stirs, Methyl ethyl ketone, binder 2, hydroquinone monomethyl ether, DPHA liquid, 2,4-bis (trichloromethyl) -6- [4 '-(N, N-bisdiethoxycarbonylmethyl) of the amount of 1 Amino-3'-bromophenyl] -s-triazine and surfactant 1 are measured, and it adds in this order at the temperature of 25 degreeC (± 2 degreeC), and 150rpm under the temperature conditions of the temperature of 40 degreeC (± 2 degreeC). It is obtained by stirring for 30 minutes with.

TABLE 1

The composition of the K pigment dispersion 1, binder 2, DPHA liquid, and surfactant 1 shown in the said Table 1 is as showing below.

<K Pigment Dispersion 1>

Carbon black (Nipex35 made by Degussa) 13.1%

Dispersant (compound 1 below) 0.65%

6.72% of polymer (benzyl methacrylate / methacrylic acid = random copolymer of 72/28 molar ratio, molecular weight 370,000)

Propylene glycol monomethyl ether acetate 79.53%

<Binder 2>

27% polymer (benzyl methacrylate / methacrylic acid = 78/22 mole ratio random copolymer, molecular weight 3.8 million)

Propylene glycol monomethyl ether acetate 73%

<DPHA liquid>

Dipentaerythritol hexaacrylate (contains 500 ppm of polymerization inhibitor MEHQ, manufactured by Nihon Kayaku Co., Ltd., product name: KAYARAD DPHA) 76%

Propylene glycol monomethyl ether acetate 24%

<Surfactant 1>

Fluorine-based surfactant 1 to 30%

70% methyl ethyl ketone

(Formation of bulkhead)

The alkali free glass substrate was brush-washed using the washing | cleaning agent after wash | cleaning with a UV washing | cleaning apparatus, and further ultrasonically cleaned with ultrapure water. The substrate was heat-treated at 120 ° C. for 3 minutes to stabilize the surface state.

After cooling the board | substrate and adjusting the temperature to 23 degreeC, the deepening composition K1 manufactured as mentioned above was apply | coated with the coater for glass substrates (the FAS Asia company make, brand name: MH-1600) which has a slit-shaped nozzle. Subsequently, a part of the solvent was dried for 30 seconds with a VCD (vacuum drying device, manufactured by Tokyo Okagyo Kogyo Co., Ltd.) to remove fluidity of the coating layer, and then prebaked at 120 ° C. for 3 minutes to obtain a thick composition layer K1 having a thickness of 2.3 μm. .

Between the exposure mask surface and the deep photosensitive layer K1 in a state where the substrate and the mask (a quartz exposure mask having an image pattern) are vertically set by a proximity exposure machine (manufactured by Hitachi Hi-Tech Denshi Engineering Co., Ltd.) having an ultra-high pressure mercury lamp. The distance was set to 200 micrometers, and it pattern-exposed at 20 micrometers of partition widths, and 100 micrometers of space widths by exposure amount 300mJ / cm <^2> in nitrogen atmosphere.

Next, pure water was sprayed with a shower nozzle to uniformly wet the surface of the color composition layer K1, and then a KOH-based developer (containing a nonionic surfactant, trade name: CDK-1, manufactured by Fuji Film Electronics Co., Ltd.) was prepared. 100 times diluted) was shower-developed at 23 degreeC, 80 second, and a flat nozzle pressure of 0.04 Mpa, and the patterning image was obtained. Subsequently, ultrapure water is sprayed at a pressure of 9.8 MPa with an ultra-high pressure cleaning nozzle to remove the residue, and post exposure is performed on the surface on which the deep color composition layer K1 of the substrate is formed at an exposure dose of 2500 mJ / cm ² under air, and 240 ° C. for 50 minutes in an oven. By heating, a stripe-shaped partition wall having an opening having a thickness of 2.0 µm, an optical density of 4.0, and a width of 100 µm was obtained.

[Ink repellent plasma treatment]

The ink repellent plasma process was performed on the board | substrate with which the partition was formed using the parallel plate type plasma processing apparatus of a cathode coupling system on condition of the following.

Gas Used: CF ₄

Gas Flow Rate: 80sccm

Pressure: 40Pa

RF power: 50W

Processing time: 30sec

(Production of Blue Inkjet Ink for Color Filters)

Preparation of Pigment Dispersion

Each pigment, a pigment dispersant, and an organic solvent are mixed in the following ratio, 500 weight part of zirconia beads of 0.3 mm in diameter are added, and it disperse | distributes for 4 hours using a paint shaker (made by Asada Tekko Co., Ltd.), and PB15: 6 (CI pig) A pigment blue 15: 6) pigment dispersion and a PV23 (CI pigment violet 23) pigment dispersion were prepared.

Composition of Pigment Dispersion

10 parts by weight of each pigment (PB15: 6 or PV23)

10 parts by weight of a pigment dispersant (Disperbyk161 (manufactured by Big Chemie Japan) (solid content 30% by weight in solvent BCA))

10 parts by weight of a pigment dispersing aid (N-phenylmaleimide / benzyl methacrylate copolymer (30 wt% solids in solvent BCA))

70 parts by weight of diethylene glycol monobutyl ether acetate (BCA)

Production of blue ink for color filters

<Monomer liquid (B1)>

The solvent, the monomer, the binder, and the surfactant component were mixed in accordance with the following composition, and after stirring at 25 ° C. for 30 minutes, it was confirmed that there were no insoluble matters to prepare a monomer solution (B1).

Diethylene glycol monobutyl ether acetate (BCA) [component (D)] 4.6 g

Tripropylene glycol n-butyl ether (TPNB) [component (D)] 40.2 g

Compound hardened by acid or radical [(A) component: the compound of Table 2]

 5.5g

Adhesive agent [(C) component: compound of Table 2] 0.7 g

0.2 g of a compound that generates at least one of an acid and a radical [(E) component: the compound of Table 2] (in the table, "(E) acid / radical generator")

Benzyl methacrylate / methacrylic acid = random copolymer of 78/22 molar ratio, molecular weight 380,000 [(F): binder] 1.0 g

0.02 g of surfactant [fluorine-based surfactant 1, the structure]

Solsper Sper 20,000 (manufactured by Acacia)

46.5 weight part of PB15: 6 pigment dispersion liquid prepared above, 3.5 weight part of PV23 pigment dispersion liquid, and 30 weight part of monomer liquids (B1) are fully mixed, and as (A) component, (C) component, and (E) component, respectively, Using the thing of Table 2, the blue inkjet ink for color filters of Examples 1-4 was obtained.

In addition, the blue inkjet ink for color filters of the comparative example 1 was obtained by the method similar to Example 2 except not having mix | blended the (C) adhesive agent.

TABLE 2

In the said Table 2, "K-2 / K-4" in Example 3 means that K-2 and K-4 are equally mix | blended and the total amount of formulation is made into 5.5 g.

The detail of (C) adhesive agents (M-1)-(M-4), (A) curable compound, and (E) acid generator used for an Example is shown below.

-(A) curable compound-

K-1: dipentaerythritol pentaacrylate

K-2: pentaerythritol triacrylate

K-3: 1,3-butanediol diacrylate

K-4: Epicoat 828 (Yuka Shell Epoxy Co., Ltd .: Bisphenol A epoxy resin)

[Evaluation of Inkjet Ink for Color Filters]

1. Curability Evaluation

The blue inkjet ink was discharged using the discharge control apparatus: Apollo II by Dimatix company which set SE-128 by Dimatix company as an inkjet head.

The inkjet head is mounted on an automatic two-dimensional moving stage (KS211-200, manufactured by Suruga Seiki), and spreads to every corner of the entire area produced as described above, and moves to a discharge control device while moving the stage so that a predetermined amount of ink is discharged. Discharge from the head was synchronized.

Here, the R ink 1 described above was filled in the head, and controlled by the discharge control device so that the ink reached the predetermined position.

After impacting, the mixture was dried at 90 ° C. for 2 minutes at atmospheric pressure, heated at 240 ° C. for 30 minutes, then immersed in an N-methylpyrrolidone solvent, and the time until peeling from the substrate was measured. The longer the time until peeling is, the more excellent the curability is, and if it is 5 minutes or more, the curability is evaluated as good.

These results were written together in Table 2. As clearly shown in Table 2, the inkjet ink of the present invention was excellent in adhesion to the substrate. It is understood that the inkjet ink of Comparative Example 1, which does not contain the (C) adhesive, does not sufficiently obtain adhesion to the substrate.

2. Flatness evaluation of pixel part

The shape of the said pixel part was observed using the non-contact surface shape measuring apparatus New View 6K (made by Zygo), and the profile of the surface shape was computed. The lowest portion was A, the highest portion was B, and the height difference (B-A) was measured. As a result, a pixel portion having a very flatness of 0.03 µm was obtained. In addition, this elevation difference (B-A) was measured and flatness evaluation was performed on the following references | standards. The results are written together in Table 2.

(Evaluation standard of flatness)

◎: B-A <0.1 μm

○: 0.1 ≤ B-A <0.2 µm

△: 0.2 ≤ B-A <0.4 μm

× 0.4 μm ≦ B-A

As is apparent from Table 2, it can be seen that the inkjet ink of the present invention can be spread to every corner of the entire region of the partition wall formed on the substrate to form an image portion having excellent flatness. On the other hand, it can be seen that the inkjet ink of Comparative Example 1, which does not contain the adhesive (C), does not have sufficient spreadability on the substrate, resulting in poor flatness of the formed image portion.

[Examples 5 to 6 and Comparative Example 2]

(Production of Red Inkjet Ink for Color Filters)

Preparation of Pigment Dispersion

Each pigment, a pigment dispersant, and an organic solvent are mixed in the following ratio, 500 weight part of zirconia beads of diameter 0.3mm are added, it is disperse | distributed for 4 hours using the paint shaker (made by Asada Tekko Co., Ltd.), and PR254 (CI pigment red) 254) Pigment Dispersion and PR177 (CI Pigment Red 177) Pigment Dispersion were prepared.

Composition of Pigment Dispersion

10 parts by weight of each pigment (PR254 or PR177)

10 parts by weight of a pigment dispersant (Disperbyk161 (manufactured by BIC Chemie Japan) (solid content 30% by weight in solvent BCA))

10 parts by weight of a pigment dispersing aid (N-phenylmaleimide / benzyl methacrylate copolymer (30 wt% solids in solvent BCA))

70 parts by weight of diethylene glycol monobutyl ether acetate (BCA)

Production of Red Ink for Color Filters

<Monomer liquid (R1)>

The solvent, the monomer, the binder, and the surfactant component were mixed in accordance with the following composition, and after stirring at 25 ° C. for 30 minutes, it was confirmed that there was no insoluble matter, thereby preparing a monomer solution (R1).

Diethylene glycol monobutyl ether acetate (BCA) [component (D)] 4.6 g

Tripropylene glycol n-butyl ether (TPNB) [component (D)] 40.2 g

Compound hardened by acid or radical [(A) component: the compound of Table 3]

5.5g

Adhesive agent [(C) component: compound of Table 3] 0.7 g

0.2 g of acid / radical generator [(E) component: compound of Table 3]

Benzyl methacrylate / methyl methacrylate / methacrylic acid = random copolymer of 50/28/22 molar ratio, molecular weight 450,000 [(F): binder] 1.0 g

0.02 g of surfactant [fluorine-based surfactant 1, the structure]

Solsper Sper 20,000 (manufactured by Acacia)

68.85 parts by weight of the PR254 pigment dispersion prepared above, 6.15 parts by weight of the PR177 pigment dispersion, and 50 parts by weight of the binder composition were sufficiently mixed, and as the component (A), the component (C) and the component (E), those listed in Table 3 were respectively It used, and obtained the red inkjet ink for color filters of Examples 5-6.

Moreover, the red inkjet ink for color filters of the comparative example 2 was obtained by the method similar to Example 6 except not having mix | blended (C) adhesive agent.

TABLE 3

(C) Adhesive agents (M-5) and (M-6) used for an Example are shown below.

[Evaluation of Inkjet Ink for Color Filters]

1. Curability Evaluation

The inkjet head used SE-128 by Dimatix, and the Apollo II by Dimatix.

The ink jet head is mounted on an automatic two-dimensional moving stage (KS211-200, manufactured by Suruga Seiki), and the ejection from the head by the ejection control device is performed while moving the stage so that a predetermined amount of ink is ejected into the gap between the partition walls produced above. Motivated.

Here, the red inkjet ink was filled in the head and controlled by the discharge control device so that the ink landed at a predetermined position.

After impacting, after drying at 90 ° C. for 2 minutes at atmospheric pressure, using an approximation type exposure machine having an ultra-high pressure mercury lamp, and after exposure at an exposure dose of 500 mJ / cm ² , it is immersed in a N-methylpyrrolidone solvent and peeled off from the substrate. The time until was measured. The longer the time until peeling is, the more excellent the curability is, and if it is 5 minutes or more, the curability is evaluated as good.

These results were written together in Table 3. As is apparent from Table 3, the inkjet ink of the present invention was excellent in adhesion to the substrate. It can be seen that the inkjet ink of Comparative Example 2 which does not contain the (C) adhesive agent does not sufficiently obtain adhesion to the substrate.

2. Flatness evaluation of pixel part

The shape of the pixel portion formed above was evaluated in the same manner as in Examples 1 to 4, and in Example 5, the elevation difference B-A was 0.03 µm, and a pixel portion with very flatness was obtained. In addition, the flatness evaluation was performed also about Example 6 and the comparative example 2 by the same reference | standard as Example 1. The results are written together in Table 3.

As clearly shown in Table 3, it can be seen that the inkjet ink of the present invention spreads to every corner of the entire region of the partition wall formed on the substrate to form an image portion having excellent flatness. On the other hand, the inkjet ink of Comparative Example 2, which does not contain the adhesive (C), does not have sufficient spreadability to the substrate, indicating that the flatness of the formed image portion is inferior.

[Examples 7 to 8 and Comparative Example 3]

(Production of Green Inkjet Ink for Color Filter)

Preparation of Pigment Dispersion

Each pigment, a pigment dispersant, and an organic solvent are mixed in the following ratio, 500 weight part of zirconia beads of 0.3 mm in diameter are added, and it disperse | distributes for 4 hours using the paint shaker (made by Asada Tekko Corporation), PG36 (CI pigment green) 36) Pigment Dispersion, PG7 (CI Pigment Green 7) Pigment Dispersion, PY138 (CI Pigment Yellow 138) Pigment Dispersion and PY150 (CI Pigment Yellow 150) Pigment Dispersion were prepared.

Composition of Pigment Dispersion

10 parts by weight of each pigment (PG36, PG7, PY138 or PY150)

10 parts by weight of a pigment dispersant (Disperbyk161 (manufactured by BIC Chemie Japan) (solid content 30% by weight in solvent BCA))

10 parts by weight of a pigment dispersing aid (N-phenylmaleimide / benzyl methacrylate copolymer (30 wt% solids in solvent BCA))

70 parts by weight of diethylene glycol monobutyl ether acetate (BCA)

Production of Green Ink for Color Filters

<Monomer liquid (G1)>

The solvent, the monomer, the binder, and the surfactant component were mixed in accordance with the following composition, and after stirring at 25 ° C. for 30 minutes, it was confirmed that there was no insoluble matter, thereby preparing a monomer solution (G1).

Diethylene glycol monobutyl ether acetate (BCA) [component (D)] 4.6 g

Tripropylene glycol n-butyl ether (TPNB) [component (D)] 40.2 g

5.5 g of a compound [(A) component: compound of Table 4] cured by an acid or a radical

Adhesive agent [(C) component: compound of Table 4] 0.7 g

0.2 g of acid / radical generator [(E) component: the compound of Table 4]

Benzyl methacrylate / hydroxyethyl methacrylate / methacrylic acid = random copolymer of 50/28/22 molar ratio, molecular weight of 30,000 [(F): binder] 1.0 g

0.02 g of surfactant [fluorine-based surfactant 1, the structure]

1.0 g of Sol Spath 20000 (Afalcia)

19.25 weight part of PG36 pigment dispersion liquid, 13.65 weight part of PG7 pigment dispersion liquid, 24.64 weight part of PY138 pigment dispersion liquid, 12.46 weight part of PY150 pigment dispersion liquid, and 45 weight part of monomer liquid which were prepared as mentioned above were mixed. Thereafter, 5 parts by weight of n-dodecane was added to obtain a green inkjet ink for color filters of Example 7 having a blending ratio shown in Table 4.

In addition, the green inkjet ink of Comparative Example 3 was prepared in the same manner as in Example 7, except that the adhesive (C) used in Example 7 was changed to use the same amount of Comparative Compound (H-1), which is an adhesion enhancer outside the scope of the present invention. Got it.

TABLE 4

In the said Table 4, "K-6 / K-7" in Example 8 means that K-6 and K-7 are equally mix | blended and the total amount of formulation is made into 5.5 g.

The detail of the (A) curable compound, (E) acid generator, and (C) adhesive agent (M-7) and comparative compound (H-1) which were used in Table 4 is as showing below.

K-5: dipentaerythritol hexaacrylate

K-6: benzyl glycidyl ether

K-7: neopentyl glycol diglycidyl ether

1. Curability Evaluation

The inkjet head used SE-128 by Dimatix, and the Apollo II by Dimatix.

The ink jet head is mounted on an automatic two-dimensional moving stage (KS211-200, manufactured by Suruga Seiki), and the ejection from the head by the ejection control device is performed while moving the stage so that a predetermined amount of ink is ejected into the gap between the partition walls produced above. Motivated.

Here, the green inkjet ink was filled in the head, and controlled by the discharge control device so that the ink landed at a predetermined position.

After the impact was reached, the mixture was heated at 200 ° C. for 20 minutes at atmospheric pressure, immersed in an N-methylpyrrolidone solvent, and the time until peeling from the substrate was measured. The longer the time until peeling is, the more excellent the curability is, and if it is 5 minutes or more, the curability is evaluated as good.

These results were written together in Table 4. As is apparent from Table 4, the inkjet ink of the present invention was excellent in adhesion to the substrate. It turns out that the inkjet ink of the comparative example 3 containing the comparative compound outside the scope of the present invention as an adhesive improving agent does not sufficiently obtain adhesiveness with a substrate.

2. Flatness evaluation of pixel part

The shape of the pixel portion formed above was evaluated in the same manner as in Examples 1 to 4, and in Example 7, the elevation difference B-A was 0.03 µm, and a pixel portion with very flatness was obtained. In addition, the flatness evaluation was performed also about Example 8 and the comparative example 3 on the same reference | standard as Example 1. The results are written together in Table 4.

As is apparent from Table 4, it can be seen that the inkjet ink of the present invention spreads to every corner of the entire area in the partition wall formed on the substrate, thereby forming an image portion having excellent flatness. On the other hand, the inkjet ink of Comparative Example 3 in which the comparative compound (H-1) was added in place of the (C) adhesive agent did not have sufficient spreadability to the substrate, indicating that the flatness of the formed image portion was inferior.

Claims (7)

(A) A compound which is cured by at least one of an acid and a radical, (B) a pigment, a compound having a substrate adhesive group in a molecule (C), and (D) a solvent, The inkjet ink for color filters characterized by the above-mentioned. The method of claim 1, (E) The inkjet ink for color filters containing the compound which produces | generates at least one of an acid and a radical. The method of claim 1, (F) Inkjet ink for color filters containing a binder. The method of claim 1, The inkjet ink for color filters in which the compound which has a board | substrate adhesive group in the said (C) molecule | numerator is represented with the following general formula (I).

(In General Formula (I), L represents a monovalent organic group, R ¹ and R ² each independently represent a hydrocarbon group, and n represents an integer of 1 to 3.) The method of claim 1, The inkjet ink for color filters in which the compound which has a board | substrate adhesive group in the said (C) molecule | numerator is represented with the following general formula (II).

(In general formula (II), L 'represents the monovalent organic group containing a hydrophilic site | part, R <^1> and R <^2> represents a hydrocarbon group each independently, and n represents the integer of 1-3.) The method of claim 1, The inkjet ink for color filters in which the compound which has a board | substrate adhesive group in the said (C) molecule | numerator is represented with the following general formula (A).

(In general formula (A), M represents the site | part which has an ethylenically unsaturated double bond, L represents an n + monovalent organic coupling group, X represents an adhesive group to a hard material, and n represents the integer of 1-5. M represents an integer of 1 to 3.) The color filter which has a coloring pattern formed on the support body by the inkjet ink for color filters of any one of Claims 1-6.