JP2007212639A - Colorant-containing curable composition, color filter using composition, and method for producing color filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a colorant-containing curable composition excellent in heat and light resistances, having good solubility of the colorant in water and organic solvents, excellent in temporal stability during storage irrespectively of its colorant concentration, and excellent also in pattern forming property and sensitivity, and to provide a color filter excellent in heat and light resistances and having such spectral characteristics as to take on a good hue, and a method for producing a color filter by which the above color filter can be produced with high productivity (high cost performance). <P>SOLUTION: The colorant-containing curable composition contains a compound represented by formula (1) and/or a tautomer thereof and an oxime-based compound. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a colorant-containing curable composition suitable for forming a color filter used for a liquid crystal display device or a solid-state imaging device, a dye-containing color filter, and a method for producing the same.

  In the field of dyes, the development of compounds having high fastness in both light resistance and heat resistance has been desired conventionally, and intensive studies have been made. In particular, in the field of dyes that are soluble in a solvent or water, it has been desired to develop a compound having both good light resistance and heat resistance.

  As dyes having both good light resistance and heat resistance, phthalocyanine compounds, azo dye Cr complexes, and the like are known. However, since phthalocyanine compounds are unsuitable for visible absorption at 400 to 500 nm, they are not useful as dyes for Yellow and Magenta, and since phthalocyanine compounds exhibit high light resistance due to their molecular association, Or in the solution state in a solvent, it has the problem of storage stability, such as precipitation of a dye.

  Further, since Cr complexes of azo dyes contain Cr atoms, it has been pointed out that they are harmful to human bodies, organisms and the environment, and this improvement has been strongly desired. On the other hand, azo dyes are useful dyes that have a high color value and can exhibit various absorption wavelengths. However, non-metal complex types have been found so far that satisfy both high light resistance and heat resistance. There wasn't.

  Among them, as azo dyes having relatively good light resistance, compounds having a γ acid as a coupling component (for example, Acid Red 57) and compounds having pyrazolone (such as Acid Yellow 29) have been known. However, a compound that can simultaneously satisfy the heat resistance has not been known (see, for example, Patent Documents 1 to 4).

Further, depending on the use conditions, there is a problem that the heat resistance and light resistance of these dyes are significantly reduced. For example, when coexisting with the type of fiber to be dyed, other dye compound, photopolymerization initiator, polymerizable compound, oxidizing agent / reducing agent, etc., or in an environment where ozone is generated, singlet oxygen is generated. In such an environment, there is a problem that one or both of heat resistance and light resistance are lowered.
Furthermore, dyes exhibiting high light resistance or heat resistance often have poor solubility in water and solvents, which often causes problems in industrial use.

  On the other hand, in recent years, in applications such as a solid-state imaging device, it is desired to further increase the definition of color filters. However, it is difficult to further improve the resolution in the conventional pigment dispersion system, and there are also problems such as uneven color due to coarse pigment particles. For this reason, the pigment dispersion method is not suitable for applications requiring a fine pattern such as a solid-state imaging device.

  In order to solve the above-mentioned problem, an example in which a dye that is soluble in a solvent or water is conventionally used is known (for example, see Patent Document 5).

However, the dye-containing curable composition includes the following new problems (1) to (4). That is,
(1) Usually, since the coloring matter has low solubility in either an alkaline aqueous solution or an organic solvent, it is difficult to obtain a liquid curable composition having a desired spectrum.
(2) Since the dye often exhibits an interaction with other components in the curable composition, it is difficult to adjust the solubility (developability) of the cured part and the non-cured part.
(3) When the molar extinction coefficient (ε) of the dye is low, a large amount of dye must be added. For this reason, the polymerizable compound (monomer), binder, and photopolymerization initiator in the curable composition Such other components must be reduced, resulting in problems such as a decrease in the curability of the composition, the heat resistance after curing, and the developability of the (non) cured portion.
(4) Dyes are generally inferior in light resistance and heat resistance compared to pigments.
Etc.

  In addition, unlike the case of use for manufacturing a liquid crystal display device, the film thickness is required to be 1.5 μm or less particularly in the case of use for manufacturing a color filter for a solid-state imaging device. Therefore, a large amount of dye must be added to the curable composition, resulting in the same problem as described above.

Here, a color filter array using a pyridone azo dye has been reported as a color filter array excellent in spectral characteristics and light resistance (see, for example, Patent Document 6).
Polish Patent No. 101484 Specification of West German Patent No. 2714204 French Patent No. 2303839 JP 58-152240 A JP 2002-278056 A JP 2002-14221 A

However, the above-mentioned pyridone azo dye has a problem that both heat resistance and solvent solubility are low.
Therefore, the present situation is that the coloring agent containing curable composition which fully satisfy | fills all of solvent solubility, heat resistance, and light resistance is not yet provided.

  The present invention has been made in view of the above-mentioned problems, is excellent in heat resistance and light resistance, has good solubility of the colorant in water and an organic solvent, and can be stored regardless of the colorant concentration level. Providing a colorant-containing curable composition having excellent stability over time, excellent pattern formation, and excellent sensitivity; and a color filter having spectral characteristics exhibiting excellent hue with excellent heat resistance and light resistance; and It aims at providing the manufacturing method of the color filter which can produce this color filter by high productivity (high cost performance), and makes it a subject to achieve this objective.

Specific means for achieving the above object are as follows.
<1> A colorant-containing curable composition comprising a compound represented by the following general formula (I) and / or a tautomer thereof, and an oxime photopolymerization initiator.

In the general formula (I), R ¹ , R ³ , and R ⁴ are each independently a hydrogen atom, an alkyl group having 1 to 21 carbon atoms, an alkenyl group having 2 to 21 carbon atoms, or 6 to 21 carbon atoms. It represents an aryl group, an aralkyl group having 7 to 21 carbon atoms, or a substituent having a hetero atom, and at least one of R ¹ , R ³ , and R ⁴ is a substituent having a hetero atom. R ³ and R ⁴ may form a heterocyclic ring together with the nitrogen atom bonded thereto. R ² represents an alkyl group having 1 to 10 carbon atoms, a methoxymethyl group, or a trifluoromethyl group.

<2> The colorant-containing curable composition according to <1>, wherein the oxime photopolymerization initiator has an aromatic ring in a molecular structure.
<3> The colorant-containing curable composition according to <1> or <2>, wherein the aromatic ring is a carbazole skeleton.

<4> In the general formula (I), R ¹ represents a substituent having a hetero atom, and R ³ and R ⁴ each independently represent a hydrogen atom, an alkyl group having 1 to 21 carbon atoms, or 2 carbon atoms. The colorant-containing curable composition according to any one of <1> to <3>, which represents an alkenyl group having 21 to 21 carbon atoms, an aryl group having 6 to 21 carbon atoms, or an aralkyl group having 7 to 21 carbon atoms. is there.

<5> In the general formula (I), at least one of R ³ and R ⁴ represents a substituent having a hetero atom, and R ¹ is a hydrogen atom, an alkyl group having ¹ to 21 carbon atoms, or 2 to 2 carbon atoms. The colorant-containing curable composition according to any one of <1> to <3>, which represents a alkenyl group having 21 carbon atoms, an aryl group having 6 to 21 carbon atoms, or an aralkyl group having 7 to 21 carbon atoms. .

<6> The colorant-containing curable composition according to any one of <1> to <5>, further including a polymerizable compound.
<7> The colorant-containing curable composition according to <6>, wherein the polymerizable compound is a (meth) acrylic ester monomer and / or a (meth) acrylamide monomer.
<8> The colorant-containing curable composition according to <7>, wherein the (meth) acrylic ester monomer and / or (meth) acrylamide monomer is bifunctional or more.

<9> The colorant-containing curable composition according to any one of <1> to <8>, further including a binder.
<10> The colorant-containing curable composition according to <9>, wherein the binder is an alkali-soluble (meth) acrylic resin.
<11> The colorant-containing curable composition according to <10>, wherein the alkali-soluble (meth) acrylic resin has a polymerizable side chain.

<12> The colorant-containing curable composition according to any one of <1> to <11>, which contains two or more kinds of photopolymerization initiators including the oxime photopolymerization initiator.
<13> A photopolymerization initiator other than the oxime photopolymerization initiator is further contained, and the other photopolymerization initiator is a trihalomethyltriazine compound, a benzyldimethyl ketal compound, an α-hydroxyketone compound, α- Aminoketone compounds, phosphine oxide compounds, metallocene compounds, triaryl imidazole dimers, benzothiazole compounds, benzophenone compounds, acetophenone compounds and derivatives thereof, cyclopentadiene-benzene-iron complexes and salts thereof, halomethyloxadiazole compounds, and The colorant-containing curable composition according to any one of <1> to <12>, which is at least one selected from the group consisting of 3-aryl-substituted coumarin compounds.

<14> The colorant-containing curable composition according to <12> or <13>, wherein the two or more kinds of photopolymerization initiators include a compound that does not generate an acid by decomposition.
<15> The above <13> or <14>, wherein the other photopolymerization initiator is at least one selected from the group consisting of an α-aminoketone compound, a phosphine oxide compound, a metallocene compound, and a triarylimidazole dimer. The colorant-containing curable composition described in 1.

<16> The colorant-containing curable composition according to any one of <1> to <15>, further including a crosslinking agent.

<17> A color filter comprising the colorant-containing curable composition according to any one of <1> to <16>.
<18> The colorant-containing curable composition according to any one of <1> to <16> is coated on a support to form a coating film, the coating film is exposed through a mask, and developed. And a process for forming a pattern.

  According to the present invention, the heat resistance and light resistance are excellent, the solubility of the colorant in water or an organic solvent is good, the stability over time during storage is excellent regardless of the level of the colorant concentration, and the pattern formability is excellent. Excellent colorant-containing curable composition with excellent sensitivity, color filter with excellent heat resistance and light resistance, spectral characteristics exhibiting good hue, and high productivity (high cost performance) of the color filter A method for manufacturing a color filter that can be manufactured can be provided.

Hereinafter, the coloring agent containing curable composition of this invention, a color filter, and its manufacturing method are demonstrated in detail.
≪Colorant-containing curable composition≫
The colorant-containing curable composition of the present invention comprises a compound represented by the following general formula (I) and / or a tautomer thereof, and an oxime photopolymerization initiator.
Since the colorant-containing curable composition of the present invention has the above-described configuration, it has excellent solvent solubility of the colorant and stability over time and sensitivity during storage after dissolution, and developability of the uncured part and the cured part. The remaining film ratio is improved and the pattern formability is excellent, and the heat resistance, light resistance, molar extinction coefficient, and color value are excellent. In addition, the addition of the dye can be reduced by improving the color value, and conversely, even when the dye concentration is high, precipitation and precipitation are suppressed, and the stability over time is excellent. In addition, in the manufacturing process, since there is no concern about deterioration of various performances as a resist, productivity is high.

Furthermore, the coloring agent containing curable composition of this invention can be comprised using another component as needed.
Hereinafter, the compound represented by the general formula (I) and the oxime-based photopolymerization initiator, which are essential components of the colorant-containing curable composition of the present invention, and other optional components (represented by the general formula (I)) A description will be given of a colorant other than the compound, a binder, a polymerizable compound, a photopolymerization initiator other than the oxime photopolymerization initiator, a crosslinking agent, a photoacid generator, and various additives.

<Compound represented by formula (I)>
The colorant-containing curable composition of the present invention contains at least one compound represented by the following general formula (I) and / or a tautomer thereof.
The compound represented by the general formula (I) is a kind of pyridone azo compound, which simultaneously satisfies high light resistance and high heat resistance, which are not found in conventional azo compounds, and water or It can be freely dissolved in organic solvents.

In the general formula (I), R ¹ , R ³ and R ⁴ are each independently a hydrogen atom, an alkyl group having 1 to 21 carbon atoms, an alkenyl group having 2 to 21 carbon atoms, or an aryl group having 6 to 21 carbon atoms. , An aralkyl group having 7 to 21 carbon atoms, or a “substituent having a hetero atom”, wherein at least one of R ¹ , R ³ , and R ⁴ is a substituent having a hetero atom. R ³ and R ⁴ may form a heterocyclic ring together with the nitrogen atom bonded thereto. R ² represents an alkyl group having 1 to 10 carbon atoms, a methoxymethyl group, or a trifluoromethyl group.

First, the case where R ¹ is “a substituent having a hetero atom” will be described.
The “substituent having a hetero atom” represented by R ¹ is not particularly limited as long as it is derived from an amine having a hetero atom (for example, a nitrogen atom, a sulfur atom, or an oxygen atom) that can be used for the synthesis of a pyridone ring. Not. The “substituent having a hetero atom” represented by R ¹ may be unsubstituted or may further have a substituent.

As the “substituent having a hetero atom” represented by R ¹ , a substituent having a total number of atoms of about 3 to 50 is preferable from the viewpoint of color valence, a substituent having a total number of atoms of 3 to 40 is more preferable, A substituent having a number of 3 to 30 is particularly preferable, and a substituent having a total number of 3 to 30 having at least one of a nitrogen atom, a sulfur atom and an oxygen atom is most preferable.

The “substituent having a hetero atom” represented by R ¹ can be introduced, for example, by closing an amide compound obtained by the reaction of a cyanoacetate with a primary amine on a pyridone ring. Therefore, the "substituent having a hetero atom" represented by R ¹ includes, for example, according to "Aldrich Structure Index", a group derived from a primary amine having a hetero atom .

Specific examples of the “substituent having a hetero atom” represented by R ¹ include 2-methoxyethyl group, 3-methoxypropyl group, 3-ethoxypropyl group, 3-butoxypropyl group, 2-methoxy. -1-methyl-ethyl group, tetrahydrofurfuryl group, hydroxyethyl group, hydroxypropyl group, 4-hydroxybutyl group, 2-hydroxy-1-methyl-ethyl group, hydroxyethoxyethyl group, 3-N-morpholinopropyl group 2-N-morpholinoethyl group, 3-N-pyrrolidinonylpropyl group, 2-dimethylaminoethyl group, 3-dimethylaminopropyl group, 3-diethylaminopropyl group, 2-N-pyrrolidinylethyl group, 2 -(N-methyl-2-pyrrolidinyl) ethyl group, 2-N-piperidinylethyl group, 3- (2-methyl-N-pi Lysinyl) propyl group, 3- isopropoxypropyl group, and the like.

Among the above, the “substituent having a hetero atom” represented by R ¹ includes a 3-methoxypropyl group, a 3-ethoxypropyl group, a 2-methoxy-1-methyl-ethyl group, a tetrahydrofurfuryl group, a hydroxy group, Ethyl group, hydroxypropyl group, 4-hydroxybutyl group, 2-hydroxy-1-methyl-ethyl group, hydroxyethoxyethyl group, 3-N-morpholinopropyl group, 2-N-morpholinoethyl group, 3-N-pyrrole Dinonylpropyl group, 2-dimethylaminoethyl group, 3-dimethylaminopropyl group, 3-diethylaminopropyl group, 2-N-pyrrolidinylethyl group, 2- (N-methyl-2-pyrrolidinyl) ethyl group, 2 -N-piperidinylethyl group, 3- (2-methyl-N-piperidinyl) propyl group, 3-isopropoxypropiyl More preferably, among them, 3-methoxypropyl group, 2-methoxy-1-methyl-ethyl group, tetrahydrofurfuryl group, hydroxyethyl group, hydroxypropyl group, 4-hydroxybutyl group, hydroxyethoxyethyl Group, 3-N-morpholinopropyl group, 2-N-morpholinoethyl group, 3-N-pyrrolidinonylpropyl group, 3-dimethylaminopropyl group, 3-diethylaminopropyl group, 2- (N-methyl-2- Pyrrolidinyl) ethyl group, 2-N-piperidinylethyl group, 3- (2-methyl-N-piperidinyl) propyl group, 3-isopropoxypropyl group and the like are more preferable.

Further, among these, the “substituent having a hetero atom” represented by R ¹ includes a 3-methoxypropyl group, a tetrahydrofurfuryl group, a hydroxypropyl group, a 4-hydroxybutyl group, a hydroxyethoxyethyl group, 3 -N-morpholinopropyl group, 2-N-morpholinoethyl group, 3-N-pyrrolidinonylpropyl group, 3-dimethylaminopropyl group, 2- (N-methyl-2-pyrrolidinyl) ethyl group, 2-N- A piperidinylethyl group, 3- (2-methyl-N-piperidinyl) propyl group, 3-isopropoxypropyl group, and the like are particularly preferable.

Further, if R ³ and / or R ⁴ represents a "substituent having a hetero atom", as the "substituent having a hetero atom" represented by R ³ and / or R ^4, for example, corresponding sulfonamide As long as it is a group derived from an amine having a hetero atom (for example, a nitrogen atom, a sulfur atom, or an oxygen atom) that can be used in the synthesis of the above, there is no particular limitation. The “substituent having a hetero atom” represented by R ³ and / or R ⁴ may be unsubstituted or may further have a substituent.

As the “substituent having a hetero atom” represented by R ³ and / or R ⁴ , a substituent having 3 to 50 total atoms is preferable from the viewpoint of color value, and a substituent having 3 to 40 total atoms is preferable. Further, a substituent having 3 to 30 total atoms is particularly preferable, and a substituent having 3 to 30 total atoms having at least one of a nitrogen atom, a sulfur atom and an oxygen atom is most preferable.

The “substituent having a hetero atom” represented by R ³ and R ⁴ can be introduced, for example, by reaction of nitrobenzenesulfonyl chloride with a primary or secondary amine. As the “substituent having a hetero atom” represented by R ³ and / or R ⁴ , for example, a group derived from a primary or secondary amine containing a hetero atom described in “Aldrich Structure Index” And derivatives thereof.

Specific examples of the “substituent having a hetero atom” represented by R ³ and R ⁴ include a 2-methoxyethyl group, a 3-methoxypropyl group, a 3-ethoxypropyl group, a 3-butoxypropyl group, 2-methoxy-1-methyl-ethyl group, tetrahydrofurfuryl group, 2-hydroxyethyl group, 2-hydroxypropyl group, 4-hydroxybutyl group, 2-hydroxy-1-methyl-ethyl group, hydroxyethoxyethyl group, 3-N-morpholinopropyl group, 2-N-morpholinoethyl group, 3-N-pyrrolidinonylpropyl group, 2-dimethylaminoethyl group, 3-dimethylaminopropyl group, 3-diethylaminopropyl group, 2-N- Pyrrolidinylethyl group, 2- (N-methyl-2-pyrrolidinyl) ethyl group, 2-N-piperidinylethyl group, 3- (2- Methyl-N-piperidinyl) propyl group, 3-isopropoxypropyl group, diethylaminoethyl group, 2,2-dimethoxyethyl group, 1,3-dioxolan-2-yl-methyl group, 3-hydroxypropyl group, 2-mercapto An ethyl group, a substituted phenyl group, etc. are mentioned.

Among these, as the “substituent having a hetero atom” represented by R ³ and R ⁴ , 3-methoxypropyl group, 3-ethoxypropyl group, 2-methoxy-1-methyl-ethyl group, tetrahydrofurfuryl Group, 2-hydroxyethyl group, 2-hydroxypropyl group, 4-hydroxybutyl group, 2-hydroxy-1-methyl-ethyl group, hydroxyethoxyethyl group, 3-N-morpholinopropyl group, 2-N-morpholinoethyl Group, 3-N-pyrrolidinonylpropyl group, 2-dimethylaminoethyl group, 3-dimethylaminopropyl group, 3-diethylaminopropyl group, 2-N-pyrrolidinylethyl group, 2- (N-methyl-2) -Pyrrolidinyl) ethyl group, 2-N-piperidinylethyl group, 3- (2-methyl-N-piperidinyl) propyl group, 3-iso Propoxypropyl group, diethylaminoethyl group, 2,2-dimethoxyethyl group, 1,3-dioxolan-2-yl-methyl group, 3-hydroxypropyl group, 2-mercaptoethyl group, substituted phenyl group, etc. are preferable,
Among these, 3-methoxypropyl group, 2-methoxy-1-methyl-ethyl group, tetrahydrofurfuryl group, 2-hydroxyethyl group, 2-hydroxypropyl group, 4-hydroxybutyl group, hydroxyethoxyethyl group, 3 -N-morpholinopropyl group, 2-N-morpholinoethyl group, 3-N-pyrrolidinonylpropyl group, 3-dimethylaminopropyl group, 3-diethylaminopropyl group, 2- (N-methyl-2-pyrrolidinyl) ethyl Group, 2-N-piperidinylethyl group, 3- (2-methyl-N-piperidinyl) propyl group, 3-isopropoxypropyl group, diethylaminoethyl group, 2,2-dimethoxyethyl group, 1,3-dioxolane 2-yl-methyl group, 3-hydroxypropyl group, 2-mercaptoethyl group, substituted phenyl , Etc. are more preferable.

Furthermore, among these, the “substituent having a hetero atom” represented by R ³ and R ⁴ includes a 3-methoxypropyl group, a tetrahydrofurfuryl group, a 2-hydroxypropyl group, a 4-hydroxybutyl group, a hydroxyethoxy group. Ethyl group, 3-N-morpholinopropyl group, 2-N-morpholinoethyl group, 3-N-pyrrolidinonylpropyl group, 3-dimethylaminopropyl group, 2- (N-methyl-2-pyrrolidinyl) ethyl group, 2-N-piperidinylethyl group, 3- (2-methyl-N-piperidinyl) propyl group, 3-isopropoxypropyl group, diethylaminoethyl group, 2,2-dimethoxyethyl group, 1,3-dioxolane-2 Particularly preferred are -yl-methyl group, 3-hydroxypropyl group, 2-mercaptoethyl group, substituted phenyl group and the like.

In the general formula (I), when R ¹ , R ³ or R ⁴ is a group containing no hetero atom, R ¹ , R ³ and R ⁴ are each independently a hydrogen atom, alkyl having 1 to 21 carbon atoms. Group, an alkenyl group having 2 to 21 carbon atoms, an aryl group having 6 to 21 carbon atoms, or an aralkyl group having 7 to 21 carbon atoms, and R ³ and R ⁴ represent a heterocyclic ring together with a nitrogen atom bonded thereto. It may be formed. R ¹ , R ³ or R ⁴ may further have a substituent.

The alkyl group having 1 to 21 carbon atoms represented by R ¹ , R ³ or R ⁴ may be unsubstituted or may have a substituent. As an alkyl group, a C1-C15 alkyl group is preferable and a C1-C10 alkyl group is still more preferable.
The alkyl group having 1 to 21 carbon atoms represented by R ¹ , R ³ or R ⁴ may be any of a linear, branched, or cyclic alkyl group, such as a methyl group, an ethyl group, or n-propyl. Group, n-butyl group, n-amyl group, n-hexyl group, n-heptyl group, n-octyl group, n-nonyl group, n-decyl group, n-undecyl group, n-dodecyl group, n-tridecyl group Group, n-tetradecyl group, n-pentadecyl group, n-hexadecyl group, n-heptadecyl group, n-octadecyl group, n-nonadecyl group, n-eicosanyl group, i-propyl group, sec-butyl group, i-butyl Group, t-butyl group, 1-methylbutyl group, 1-ethylpropyl group, 2-methylbutyl group, i-amyl group, neopentyl group, 1,2-dimethylpropyl group, 1,1-dimethylpropyl group, t -Amyl group, 1,3-dimethylbutyl group, 3,3-dimethylbutyl group,

2-ethylbutyl group, 2-ethyl-2-methylpropyl group, linear or branched heptyl group, 1-methylheptyl group, 2-ethylhexyl group, 1,5-dimethylhexyl group, t-octyl group, branched nonyl Group, branched decyl group, branched undecyl group, branched dodecyl group, branched tridecyl group, branched tetradecyl group, branched pentadecyl group, branched hexadecyl group, branched heptadecyl group, branched octadecyl group, linear or Branched nonadecyl group, straight chain or branched eicosanyl group, cyclopropyl group, cyclopropylmethyl group, cyclobutyl group, cyclobutylmethyl group, cyclopentyl group, cyclohexyl group, cyclohexylmethyl group, cycloheptyl group, cyclooctyl group, cyclohexylpropyl Group, cyclododecyl group, Rubornyl group, bornyl group, cis-miltanyl group, isopinocanphenyl group, noradamantyl group, adamantyl group, adamantylmethyl group, 1- (1-adamantyl) ethyl group, 3,5-dimethyladamantyl group, quinuclidinyl group, cyclopentyl Preferred examples include an ethyl group and a bicyclooctyl group.

Among the above, examples of the alkyl group having 1 to 21 carbon atoms represented by R ¹ , R ³ or R ⁴ include a methyl group, an ethyl group, an n-propyl group, an n-butyl group, an n-amyl group, an n- Hexyl, n-heptyl, n-octyl, n-nonyl, n-decyl, n-undecyl, n-dodecyl, n-tridecyl, n-tetradecyl, i-propyl, sec- Butyl, i-butyl, t-butyl, 1-methylbutyl, 1-ethylpropyl, 2-methylbutyl, i-amyl, neopentyl, 1,2-dimethylpropyl, 1,1-dimethyl Propyl group, t-amyl group, 1,3-dimethylbutyl group, 3,3-dimethylbutyl group, 2-ethylbutyl group, 2-ethyl-2-methylpropyl group, linear or branched heptyl group, 1-methyl Heptyl group, 2-ethylhexyl group, 1,5-dimethylhexyl group, t-octyl group, branched nonyl group, branched decyl group, branched undecyl group, branched dodecyl group, branched tridecyl group, branched tetradecyl group, cyclopropyl Group, cyclopropylmethyl group, cyclobutyl group, cyclobutylmethyl group, cyclopentyl group, cyclohexyl group, cyclohexylmethyl group, cycloheptyl group, cyclooctyl group, cyclohexylpropyl group, cyclododecyl group, norbornyl group, bornyl group, cis-miltanyl Group, isopinocanphenyl group, noradamantyl group, adamantyl group, adamantylmethyl group, 1- (1-adamantyl) ethyl group, 3,5-dimethyladamantyl group, quinuclidinyl group, cyclopentylethyl group, bicyclooctyl group More preferable.

Furthermore, among the above, the alkyl group having 1 to 21 carbon atoms represented by R ¹ , R ³ or R ⁴ includes a methyl group, an ethyl group, an n-propyl group, an n-butyl group, and an n-amyl group. N-hexyl group, n-heptyl group, n-octyl group, n-nonyl group, n-decyl group, i-propyl group, sec-butyl group, i-butyl group, t-butyl group, 1-methylbutyl group 1-ethylpropyl group, 2-methylbutyl group, i-amyl group, neopentyl group, 1,2-dimethylpropyl group, 1,1-dimethylpropyl group, t-amyl group, 1,3-dimethylbutyl group, 3 , 3-dimethylbutyl group, 2-ethylbutyl group, 2-ethyl-2-methylpropyl group, linear or branched heptyl group, 1-methylheptyl group, 2-ethylhexyl group, 1,5-dimethylhexyl group, t -Octyl group Branched nonyl group, branched decyl group, cyclopropyl group, cyclopropylmethyl group, cyclobutyl group, cyclobutylmethyl group, cyclopentyl group, cyclohexyl group, cyclohexylmethyl group, cycloheptyl group, cyclooctyl group, cyclohexylpropyl group, A cyclododecyl group, norbornyl group, bornyl group, noradamantyl group, adamantyl group, adamantylmethyl group, 1- (1-adamantyl) ethyl group, 3,5-dimethyladamantyl group, cyclopentylethyl group and bicyclooctyl group are particularly preferred.

Of the alkyl groups having 1 to 21 carbon atoms represented by R ¹ , R ³ or R ⁴ listed above, from the viewpoint of improving heat resistance, an ethyl group, an n-propyl group, an n-butyl group, n-amyl group, n-hexyl group, n-heptyl group, n-octyl group, n-nonyl group, n-decyl group, branched alkyl group or cyclic alkyl group (for example, i-propyl group, sec-butyl group) Group, i-butyl group, t-butyl group, 1-methylbutyl group, 1-ethylpropyl group, 2-methylbutyl group, i-amyl group, neopentyl group, 1,2-dimethylpropyl group, 1,1-dimethylpropyl group Group, t-amyl group, 1,3-dimethylbutyl group, 3,3-dimethylbutyl group, 2-ethylbutyl group, 2-ethyl-2-methylpropyl group, branched heptyl group, 1-methylheptyl group, 2 -Ethyl hex Sil group, 1,5-dimethylhexyl group, t-octyl group, branched nonyl group, branched decyl group, cyclopropyl group, cyclopropylmethyl group, cyclobutyl group, cyclobutylmethyl group, cyclopentyl group, cyclohexyl group, cyclohexyl Methyl group, cycloheptyl group, cyclooctyl group, cyclohexylpropyl group, cyclododecyl group, norbornyl group, bornyl group, noradamantyl group, adamantyl group, adamantylmethyl group, 1- (1-adamantyl) ethyl group, 3,5- A dimethyladamantyl group, a cyclopentylethyl group, a bicyclooctyl group, etc.) are particularly preferred.

  Of the alkyl groups exemplified above, an alkyl group substituted with fluorine is also particularly suitable. Examples of the fluorine-substituted alkyl group include trifluoromethyl group, trifluoroethyl group, pentafluoroethyl group, heptafluoropropyl group, nonafluorobutyl group, tridecafluorohexyl group, pentadecafluoroheptyl group, heptadecafluorooctyl group , Tridecafluorooctyl group, nonadecafluorononyl group, heptadecafluorodecyl group and perfluorodecyl group are preferable, among which trifluoromethyl group, pentafluoroethyl group, heptafluoropropyl group, nonafluorobutyl group, trideca A fluorohexyl group and a pentadecafluoroheptyl group are more preferable, and a trifluoromethyl group, a pentafluoroethyl group, a heptafluoropropyl group, a nonafluorobutyl group, and a tridecafluorohexyl group are particularly preferable.

The alkenyl group having 2 to 21 carbon atoms represented by R ¹ , R ³ or R ⁴ may be unsubstituted or may have a substituent. The alkenyl group is preferably an alkenyl group having 2 to 15 carbon atoms, and more preferably an alkenyl group having 2 to 10 carbon atoms.

Examples of the alkenyl group having 2 to 21 carbon atoms represented by R ¹ , R ³ or R ⁴ include a vinyl group, an isopropenyl group, a 2-propenyl group, a 2-methyl-propenyl group, and 1-methyl-1 -Propenyl group, 1-butenyl group, 3-butenyl group, 1-methyl-1-butenyl group, 1,1-dimethyl-3-butenyl group, 1-pentenyl group, 2-pentenyl group, 1-ethyl-1- Pentenyl group, 1-hexenyl group, 1-heptenyl group, 2,6-dimethyl-5-heptenyl group, 9-decenyl group, 1-cyclopentenyl group, 2-cyclopentenylmethyl group, cyclohexenyl group, 1-methyl- 2-cyclohexenyl group, 1,4-dihydro-2-methylphenyl group, octenyl group, citronellyl group, oleyl group, geranyl group, farnesyl group, 2- (1-cyclohexyl group) Preferred examples include senyl) ethyl group.

Among them, examples of the alkenyl group having 2 to 21 carbon atoms represented by R ¹ , R ³ or R ⁴ include a vinyl group, an isopropenyl group, a 2-propenyl group, a 2-methyl-propenyl group, and 1-methyl- 1-propenyl group, 1-butenyl group, 3-butenyl group, 1-methyl-1-butenyl group, 1,1-dimethyl-3-butenyl group, 1-pentenyl group, 2-pentenyl group, 1-ethyl-1 -Pentenyl group, 1-hexenyl group, 1-heptenyl group, 1-cyclopentenyl group, 2-cyclopentenylmethyl group, cyclohexenyl group, 1-methyl-2-cyclohexenyl group, 1,4-dihydro-2-methyl A phenyl group is more preferable, and further a vinyl group, an isopropenyl group, a 2-propenyl group, a 2-methyl-propenyl group, a 1-methyl-1-propenyl group, a 1-butenyl group, 3 -Butenyl group, 1-methyl-1-butenyl group, 1,1-dimethyl-3-butenyl group, 1-pentenyl group, 2-pentenyl group, 1-ethyl-1-pentenyl group, 1-hexenyl group, 1-hexenyl group, A cyclopentenyl group, 2-cyclopentenylmethyl group, cyclohexenyl group, 1-methyl-2-cyclohexenyl group, and 1,4-dihydro-2-methylphenyl group are particularly preferable.

The aryl group having 6 to 21 carbon atoms represented by R ¹ , R ³ or R ⁴ may be unsubstituted or may have a substituent. As the aryl group, an aryl group having 6 to 15 carbon atoms is preferable, and an aryl group having 6 to 10 carbon atoms is more preferable.

Examples of the aryl group having 6 to 21 carbon atoms represented by R ¹ , R ³ or R ⁴ include, for example, phenyl group, naphthyl group, biphenylenyl group, acenaphthenyl group, fluorenyl group, anthracenyl group, anthraquinonyl group, pyrenyl Preferred examples thereof include a phenyl group, a naphthyl group, a biphenylenyl group, an acenaphthenyl group, a fluorenyl group, and an anthracenyl group, and a phenyl group, a naphthyl group, a biphenylenyl group, and a fluorenyl group are particularly preferable.

The aralkyl group having 7 to 21 carbon atoms represented by R ¹ , R ³ or R ⁴ may be unsubstituted or may have a substituent. As the aralkyl group, an aralkyl group having 7 to 15 carbon atoms is preferable, and an aralkyl group having 7 to 10 carbon atoms is more preferable.

Examples of the aralkyl group having 7 to 21 carbon atoms represented by R ¹ , R ³ or R ⁴ include benzyl group, diphenylmethyl group, 1,2-diphenylethyl group, phenyl-cyclopentylmethyl group, and α-methyl. Benzyl group, phenylethyl group, α-methyl-phenylethyl group, β-methyl-phenylethyl group, 3-phenylpropyl group, 3,3-diphenylpropyl group, 4-phenylbutyl group, naphthylmethyl group, styryl group, Preferred examples include cinnamyl group, fluorenyl group, 1-benzocyclobutenyl group, 1,2,3,4-tetrahydronaphthyl group, indanyl group, piperonyl group, pyrenemethyl group and the like.

Among these, examples of the aralkyl group having 7 to 21 carbon atoms represented by R ¹ , R ³ or R ⁴ include a benzyl group, a phenyl-cyclopentylmethyl group, an α-methylbenzyl group, a phenylethyl group, an α-methyl- Phenylethyl group, β-methyl-phenylethyl group, 3-phenylpropyl group, 4-phenylbutyl group, styryl group, cinnamyl group, fluorenyl group, 1-benzocyclobutenyl group, 1,2,3,4-tetrahydro A naphthyl group is more preferable, and further a benzyl group, an α-methylbenzyl group, a phenylethyl group, an α-methyl-phenylethyl group, a β-methyl-phenylethyl group, a 3-phenylpropyl group, a styryl group, a cinnamyl group, and a fluorenyl group. The group, 1-benzocyclobutenyl group and 1,2,3,4-tetrahydronaphthyl group are particularly preferred.

The group represented by R ¹ , R ³ or R ⁴ may contain an ether group, and for example, a tetrahydrofurfuryl group, a 2,5-dihydro-2,5-dimethoxyfurfuryl group and the like are preferable.

As described above, R ³ and R ⁴ may form a heterocyclic ring together with the nitrogen atom bonded thereto. Examples of the heterocyclic ring in this case include 2-methylaziridine ring, azetidine ring, pyrrolidine ring, 3-pyrroline ring, piperidine ring, 1,2,3,6-tetrahydropyridine ring, hexamethyleneimine ring, piperazine ring, 1,3,3-trimethyl-6-azabicyclo [3.2.1] octane ring, decahydroquinoline ring, oxazolidine ring, morpholine ring, thiazolidine ring, thiomorpholine ring, indoline ring, isoindoline ring, 1,2, Preferred are 3,4-tetrahydrocarbazole ring, 1,2,3,4-tetrahydroquinoline ring, 1,2,3,4-tetrahydroisoquinoline ring, iminodibenzyl ring, phenoxazine ring, phenothiazine ring, phenazine ring, etc. It is.

  Among these, pyrrolidine ring, 3-pyrroline ring, piperidine ring, 1,2,3,6-tetrahydropyridine ring, hexamethyleneimine ring, piperazine ring, decahydroquinoline ring, oxazolidine ring, morpholine ring, thiazolidine ring, thio A morpholine ring is more preferable, and further a pyrrolidine ring, a 3-pyrroline ring, a piperidine ring, a 1,2,3,6-tetrahydropyridine ring, a piperazine ring, a decahydroquinoline ring, an oxazolidine ring, a morpholine ring, a thiazolidine ring, a thiol A morpholine ring is particularly preferred.

When the group represented by R ¹ , R ³ or R ⁴ and the heterocyclic ring formed by R ³ and R ⁴ and a nitrogen atom have a substituent, the substituent includes an acyl group, an acylamino group , Acylaminocarbonylamino group, aralkylaminocarbonylamino group, arylaminocarbonylamino group, methacryloylaminocarbonylamino group, alkoxycarbonyl group, trifluoromethyl group, fluoro group, chloro group, bromo group, iodo group, hydroxy group, nitro Group, methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, i-butyl group, sec-butyl group, t-butyl group, pentyl group, hexyl group, heptyl group, octyl group, Vinyl group, methoxy group, ethoxy group, butoxy group, isopropoxy group, t-butoxy group, cyclohexyloxy group Vinyloxy group, a methylthio group, an ethylthio group, a pyrrolidinyl group, a piperidinyl group, a piperazinyl group, an amino group, dimethylamino group, diethylamino group, a phenyl group, -SO ₃ M group, -COOM group (M represents a hydrogen atom, a metal atom or containing Represents a cation composed of a nitrogen compound).
In this case, when a hetero atom is contained in the substituent, the group represented by R ¹ , R ³ or R ⁴ is a group containing a hetero atom.

Among the substituents, acyl group (particularly acetyl group), acylamino group, acylaminocarbonylamino group, alkoxycarbonyl group, trifluoromethyl group, fluoro group, chloro group, bromo group, hydroxy group, nitro group, methyl group, Ethyl, n-propyl, i-propyl, n-butyl, i-butyl, sec-butyl, t-butyl, pentyl, hexyl, vinyl, methoxy, ethoxy, butoxy , isopropoxy, t-butoxy group, cyclohexyloxy group, a vinyloxy group, a methylthio group, an ethylthio group, a pyrrolidinyl group, a piperidinyl group, a piperazinyl group, an amino group, dimethylamino group, diethylamino group, a phenyl group, -SO ₃ M group , -COOM group (wherein M is a hydrogen atom, a metal atom or a nitrogen-containing compound) More preferably, an acyl group (particularly an acetyl group), an acylamino group, an acylaminocarbonylamino group, an alkoxycarbonyl group, a trifluoromethyl group, a fluoro group, a chloro group, a bromo group, a hydroxy group, Nitro group, methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, i-butyl group, t-butyl group, hexyl group, vinyl group, methoxy group, ethoxy group, isopropoxy group, cyclohexyloxy group, a vinyloxy group, a methylthio group, an ethylthio group, a pyrrolidinyl group, a piperidinyl group, a piperazinyl group, an amino group, dimethylamino group, diethylamino group, a phenyl group, -SO ₃ M group, -COOM group (M represents a hydrogen atom, Represents a cation composed of a metal atom or a nitrogen-containing compound).
Further, the above substituents may be further substituted with the same substituent multiple times.

  In particular, when the substituent is a group having an active hydrogen such as a hydroxy group or an amino group, the substituent is reacted with various acid chlorides, acid anhydrides, halides or various isocyanates to produce acetyl groups, acyl Group, (meth) acryloyl group, alkylaminocarbonyl group, arylaminocarbonyl group (for example, butylaminocarbonyl group, phenylaminocarbonyl group and the like), alkyl group, aralkyl group and the like.

The alkyl group, alkenyl group, aryl group, aralkyl group and substituent having a hetero atom represented by R ¹ , R ³ or R ⁴ , and the heterocycle formed by R ³ and R ⁴ and a nitrogen atom are Further, each group represented by R ¹ , R ³ or R ⁴ may be substituted.

From the viewpoint of color value (ε / Mw), the formula weight of the group represented by R ¹ , R ³ or R ⁴ is preferably 500 or less, preferably 400 or less in total of R ¹ , R ³ and R ^4. Is more preferable, and 300 or less is particularly preferable. When R ³ and R ⁴ have a substituent, the number of the substituent that R ³ and R ⁴ have respectively is preferably 0 to 4, more preferably 0 to 3, and particularly preferably 0 to 2.

The group represented by R ¹ , R ³ or R ⁴ , and the —SO ₃ M group exemplified as the substituent when the heterocyclic ring formed by R ³ and R ⁴ and a nitrogen atom has a substituent. M in the —COOM group represents a cation composed of a hydrogen atom, a cation of a metal atom, or a nitrogen-containing compound. Further, the M includes a cation of H, Li, Na, K, Rb, Cs, Ag, Mg, Ca, Sr, Ba, Zn, Al, Ni, Cu, Co, or Fe, or a nitrogen-containing compound. A cation is preferred, a cation of H, Na, K, Rb, Cs, Ag, Mg, Ca, Sr, Ba, Zn, Al, Cu, or Fe, or a cation comprising a nitrogen-containing compound is more preferred, and H, Na, Particularly preferred are cations of K, Mg, Ca, Ba, Sr, Zn, Al, Cu, or Fe, or a cation composed of a nitrogen-containing compound.

  The cation composed of the nitrogen-containing compound represented by M is selected in consideration of all of the solubility in organic solvents and water, salt formation, the absorbance and color value of the dye, the heat resistance and light resistance of the colorant, and the like. be able to. When a cation composed of a nitrogen-containing compound is selected only from the viewpoint of absorbance and color value, the nitrogen-containing compound preferably has a molecular weight as low as possible. Among them, those having a molecular weight of 300 or less are preferred, and those having a molecular weight of 280 or less are further preferred. Those having a molecular weight of 250 or less are particularly preferred.

In the general formula (I), R ² represents an alkyl group having 1 to 10 carbon atoms, a methoxymethyl group, or a trifluoromethyl group. As the alkyl group represented by R ² , an alkyl group having 1 to 5 carbon atoms is preferable. R ² may be unsubstituted or may further have a substituent.

The R ^2, specifically, a methyl group, an ethyl group, n- propyl group, an isopropyl group, t- butyl group, methoxymethyl group, trifluoromethyl group preferably a methyl group, an ethyl group, an isopropyl group , T-butyl group, methoxymethyl group and trifluoromethyl group are more preferable, and methyl group, isopropyl group, methoxymethyl group and trifluoromethyl group are particularly preferable.

When R ² has a substituent, the substituent is preferably a halogen atom, an alkyl group, or an alkenyl group. Among them, a chlorine atom, a fluorine atom, a methyl group, an ethyl group, a propyl group, a butyl group, A 2-butenyl group is more preferable, and a chlorine atom, a methyl group, an ethyl group, a propyl group, a butyl group, and a 2-butenyl group are particularly preferable.

  Hereinafter, specific examples of the nitrogen-containing compound forming “a cation comprising a nitrogen-containing compound” will be given. However, the present invention is not limited to these. The cation here refers to a cation that is obtained by protonating the following nitrogen-containing compound.

The compound represented by the general formula (I) may be bonded at the R ¹ , R ³ and R ⁴ portions, and may have two or more dye skeletons.

Next, preferred embodiments of the compound represented by formula (I) will be described.
Examples of the compound represented by the general formula (I) include (1) the R ¹ is a substituent having a hetero atom, and the R ³ and R ⁴ are each independently a hydrogen atom, a carbon number of 1 to 21 An aspect of the alkyl group, an alkenyl group having 2 to 21 carbon atoms, an aryl group having 6 to 21 carbon atoms, or an aralkyl group having 7 to 21 carbon atoms, (2) at least one of R ³ and R ⁴ is “heteroatom R ¹ is a hydrogen atom, an alkyl group having 1 to 21 carbon atoms, an alkenyl group having 2 to 21 carbon atoms, an aryl group having 6 to 21 carbon atoms, or an aralkyl group having 7 to 21 carbon atoms. (3) wherein R ¹ and R ³ (or R ⁴ ) are a substituent having a hetero atom, R ⁴ (or R ³ ) is a hydrogen atom, an alkyl group having 1 to 21 carbon atoms, carbon C2-C21 alkenyl group, C6-C21 aryl , Or aspects of an aralkyl group having a carbon number of 7 to 21, (4) aspect the R ^1, R ³ and R ⁴ representing a substituent having a hetero atom, and the like.

  Specific examples of the compound represented by the general formula (I) [Exemplary compounds (1) to (72)] are listed below. However, the present invention is not limited to these. In addition, tautomers of the following specific examples are also suitable as the compounds represented by the general formula (I).

The compound represented by the general formula (I) is generally synthesized by, for example, a method in which a nitrobenzene derivative having a desired substituent is reduced and then diazotized, and a pyridone compound having the desired substituent is added thereto. be able to.
In addition, various compounds included in the general formula (I) can be synthesized in the same manner by appropriately changing a desired nitrobenzene derivative, a substituent of the pyridone compound, and the like.

  The concentration in the colorant-containing curable composition of the compound represented by the general formula (I) (including an acidic dye when used in combination with an acidic dye described later) varies depending on the type of the dye, 0.5-80 mass% is preferable with respect to a component, 0.5-70 mass% is more preferable, 0.5-75 mass% is especially preferable.

<Oxime-based photopolymerization initiator>
The colorant-containing curable composition of the present invention contains at least one oxime photopolymerization initiator.
The oxime-based photopolymerization initiator can be contained together with a polymerizable compound (monomer) described later when the colorant-containing curable composition is configured as a negative type.
The oxime photopolymerization initiator is not particularly limited as long as it can cause a polymerization reaction of a polymerizable compound described later and other polymerizable compounds, but from the viewpoint of characteristics, initiation efficiency, absorption wavelength, availability, cost, and the like. It is preferable to be selected.
Although it does not specifically limit as an oxime system photoinitiator selected from said viewpoint, For example, compounds, such as CGI-325, CGI-242, and CGI-124 (above, Ciba Specialty Chemicals company make), are mentioned. Can do.

  From the viewpoint of absorption wavelength, the oxime photopolymerization initiator is preferably a compound having an aromatic ring in the molecular structure, and particularly preferably a compound having a carbazole skeleton in the molecular structure. .

  Specific examples of the oxime photopolymerization initiator include, for example, 2- (O-benzoyloxime) -1- [4- (phenylthio) phenyl] -1,2-octanedione, 1- (O-acetyloxime). -1- [9-ethyl-6- (2-methylbenzoyl) -9H-carbazol-3-yl] ethanone, 1- (4-methylsulfanyl-phenyl) -butane-1,2-butane-2-oxime- O-acetate, 1- (4-methylsulfanyl-phenyl) -butan-1-one oxime-O-acetate, hydroxyimino- (4-methylsulfanyl-phenyl) -acetic acid ethyl ester-O-acetate, hydroxyimino- (4 -Methylsulfanyl-phenyl) -acetic acid ethyl ester-O-benzoate, and the like.

  As content in the coloring agent containing curable composition of an oxime system photoinitiator, 0.1-50 mass% is preferable with respect to all the solid components, 0.1-40 mass% is more preferable, 0 .1 to 30% by mass is particularly preferable. When the content is within the above range, it is effective to prevent the molecular weight from becoming too low and the film strength from becoming weak.

  The colorant-containing curable composition of the present invention may have the above-described general formula (I), if necessary, in addition to the compound represented by the general formula (I) and the oxime photopolymerization initiator. Colorants other than the compounds represented, photopolymerization initiators other than the oxime photopolymerization initiators described above, binders, polymerizable compounds (monomers), solvents, crosslinking agents, photoacid generators, etc. Can be configured. Hereinafter, each component will be described in detail.

As a specific example, when the colorant-containing curable composition of the present invention is a radical polymerizable negative composition, a solvent is used together with the compound represented by the general formula (I) and the oxime photopolymerization initiator. The composition may further include a polymerizable compound (monomer), a binder (preferably an alkali-soluble binder), and a crosslinking agent.
In the case of using a colorant containing a radical polymerizable group, a polymerizable compound (monomer) may or may not be contained.

  In addition, when the colorant-containing curable composition of the present invention is an acid condensable negative composition, the composition contains a solvent together with the compound represented by the general formula (I) and the oxime photopolymerization initiator. And may further include a cross-linking agent.

<Other colorants, etc.>
The color-containing curable composition of the present invention includes a colorant other than the compound represented by the general formula (I), a salt of the other colorant and an atomic group such as a metal or a nitrogen-containing compound, or Complexes, derivatives of other colorants, and the like can be used in combination. In the present invention, the above may be collectively referred to as “other colorants and the like”.

  Examples of the other colorant include a direct dye, an acid dye, a mordant / acid mordant dye, a basic dye, a vat dye, a dye described in COLOR INDEX (SOCIETY OF DYES AND COLORISTS) and a dye note (color dye company). Examples include sulfur dyes, azoic dyes, disperse dyes, reactive dyes, fluorescent brighteners, other dyes, pigment resin colors, pigments, and near-infrared absorbing dyes.

As these colorants, for example,
C.I. Solvent Blue 25 (C.I. Solvent Blue 25), C.I. Solvent Blue 55 (C.I. Solvent Blue 55),
C.I. Solvent Blue 67 (CI Solvent Blue 67),
C.I. Solvent Blue 38 (CI Solvent Blue 38);
C.I. Solvent Yellow 82 (C.I. Solvent Yellow 162), C.I. Solvent Yellow 162 (C.I. Solvent Yellow 162);
C.I. Solvent Orange 56 (CI Solvent Orange 56);
CI Acid Violet 17 (CI Acid Violet 17), CI Acid Violet 49 (CI Acid Violet 49);
C.I. Direct Blue 86 (CI Direct Blue 86);
These may be used alone or in combination of two or more.

-Acid dyes and their derivatives-
The acidic dye is not particularly limited as long as it is a pigment having an acidic group such as sulfonic acid or carboxylic acid, but is soluble in an organic solvent or a developing solution used during development processing, salt formation with a basic compound, absorbance, The curable composition is selected in consideration of all required performances such as interaction with other components, light resistance, heat resistance and the like.

Specific examples of acid dyes are listed below. However, it is not limited to these. For example,
acid alizarin violet N;
acid black 1, 2, 24, 48;
acid blue 1,7,9,15,18,23,25,27,29,40,45,62,70,74,80,83,86,87,90,92,103,108,112,113, 120, 129, 138, 147, 158, 171, 182, 192, 249;
acid chroma violet K;
acid Fuchsin;
acid green 1,3,5,9,16,25,27,50;
acid orange 6, 7, 8, 10, 12, 50, 51, 52, 56, 63, 74, 95;
acid red 1,4,8,14,17,18,26,27,29,31,34,35,37,42,44,50,51,52,57,66,73,80,87,88, 91, 92, 94, 97, 103, 111, 114, 129, 133, 134, 138, 143, 145, 150, 151, 158, 176, 183, 198, 211, 215, 216, 217, 249, 252 257, 260, 266, 274;
acid violet 6B, 7, 9, 17, 19;
acid yellow 1,3,7,9,11,17,23,25,29,34,36,40,42,54,65,72,73,76,79,98,99,111,112,114, 116, 163, 169, 243;
Food Yellow 3;
And derivatives of these dyes.

Among the above, acid black 24;
acid blue 7, 23, 25, 29, 62, 83, 86, 87, 90, 92, 108, 138, 158, 249;
acid green 3, 5, 9, 16, 25, 27, 50;
acid orange 8, 51, 56, 63, 74;
acid red 1,4,8,34,37,42,52,57,80,97,114,143,145,151,183,217;
acid violet 7;
acid yellow 17, 23, 25, 29, 34, 40, 42, 72, 76, 99, 111, 112, 114, 116, 163, 243;
And the like and their derivatives are preferred.

Other than the above, azo, xanthene and phthalocyanine acid dyes are also preferred. I. Solvent Blue 44, 38; I. Solvent Orange 45; Rhodamine B, Rhodamine 110, 3-[(5-chloro-2-phenoxyphenyl) hydrazono] -3,4-dihydro-4-oxo-5-[(phenylsulfonyl) amino] -2,7-naphthyl, etc. These acid dyes and derivatives of these dyes can also be suitably used.
As the derivative of the acid dye, a compound obtained by converting the sulfonic acid of the acid dye into a sulfonic acid amide or a sulfonic acid ester is useful.

  Next, the atomic group that forms a salt with the acid dye will be described. The atomic group that forms a salt with the acid dye is not particularly limited as long as it is a cationic group that forms a salt with the anion of the acid dye. Examples of such atomic groups include Li, Na, K, Rb, Cs, Ag, Mg, Ca, Sr, Ba, Zn, Al, Ni, Cu, Co, Fe, or a cation composed of a nitrogen-containing compound. It is done.

  Next, the nitrogen-containing compound that forms a salt with the acidic dye will be described. Nitrogen-containing compounds that form salts with acidic dyes are selected in consideration of all of their solubility in organic solvents and developers, salt-forming properties, dye absorbance, and interactions with other components in the curable composition. Is done. When selecting only from the viewpoint of absorbance, those having a molecular weight as low as possible are preferred, those having a molecular weight of 245 or less are preferred, those having a molecular weight of 240 or less are more preferred, and those having a molecular weight of 230 or less are particularly preferred.

  Further, in order to prevent light fading of dyes and to improve heat resistance, nitrogen-containing compounds generally known as anti-fading agents may be used. From this viewpoint, the oxidation potential is lower (ionization potential is smaller). Compounds, tertiary amine compounds, aliphatic cyclic amine compounds, aniline compounds, hydrazine compounds, and the like are preferable.

Preferable specific examples of the nitrogen-containing compound are the same as those mentioned as M of “—SO ₃ M” in the description of R ³ and R ⁴ in the general formula (I).

Next, [atomic group forming salt with compound (and / or acid dye) represented by general formula (I) described above] / [compound represented by general formula (I) (and / or Or acid dye)] [molar ratio L] will be described.
An atomic group that forms a salt with the compound (and / or acid dye) represented by the aforementioned general formula (I), and a compound (and / or acid dye) represented by the aforementioned general formula (I); The ratio [molar ratio] L is a value that determines the molar ratio between the acidic dye molecule and the atomic group that is a counter ion, and can be freely selected according to the salt forming conditions of the acidic dye atomic group. Specifically, it is a value between 0 <L ≦ 10, solubility in organic solvents and developers, salt formation, absorbance, interaction with other components in the curable composition, light resistance, heat resistance It is selected in consideration of all required performance priorities such as sex. When selected from the standpoint of absorbance or color value alone, L preferably takes a value between 0 <L ≦ 7, more preferably a value between 0 <L ≦ 6, and 0 <L ≦ 5. It is particularly preferable to take a value between.

<Binder>
The colorant-containing curable composition of the present invention can be suitably configured using at least one binder. The binder in the present invention can be appropriately selected from water-soluble and / or alkali-soluble binders (hereinafter, the alkali-soluble binder may be referred to as “alkali-soluble binder”). It is preferably selected from the viewpoint of availability.

  The alkali-soluble binder is preferably a linear organic polymer, soluble in an organic solvent, and developable with a weak alkaline aqueous solution. Examples of such linear organic high molecular polymers include polymers having a carboxylic acid in the side chain, such as JP-A-59-44615, JP-B-54-34327, JP-B-58-12577, and JP-B-54-. No. 25957, JP-A-59-53836, JP-A-59-71048, and the like, such as methacrylic acid copolymer, acrylic acid copolymer, itaconic acid copolymer, crotonic acid copolymer. Examples thereof include polymers, maleic acid copolymers, partially esterified maleic acid copolymers, and acidic cellulose derivatives having a carboxylic acid in the side chain are particularly useful. In addition, polymers obtained by adding an acid anhydride to a polymer having a hydroxyl group, polyhydroxystyrene resins, polysiloxane resins, poly (2-hydroxyethyl (meth) acrylate), polyvinylpyrrolidone, polyethylene oxide, polyvinyl alcohol Etc. are also useful.

  In addition, a monomer having a hydrophilic group may be copolymerized, and examples thereof include alkoxyalkyl (meth) acrylate, hydroxyalkyl (meth) acrylate, glycerol (meth) acrylate, (meth) acrylamide, and N-methylolacrylamide. Secondary and tertiary alkyl acrylamide, dialkylaminoalkyl (meth) acrylate, morpholino (meth) acrylate, N-vinylpyrrolidone, N-vinylcaprolactam, vinylimidazole, vinyltriazole, methyl (meth) acrylate, ethyl (meth) Examples include those obtained by copolymerization using acrylate, branched or linear propyl (meth) acrylate, branched or linear butyl (meth) acrylate, phenoxyhydroxypropyl (meth) acrylate, and the like. .

  In addition to the above, the monomer having a hydrophilic group includes a tetrahydrofurfuryl group, a phosphoric acid site, a phosphate ester site, a quaternary ammonium salt site, an ethyleneoxy chain, a propyleneoxy chain, a sulfonic acid or its salt site, a morpholinylethyl group, etc. Monomers containing are also useful.

  From the viewpoint of improving the crosslinking efficiency, it is preferable to have a polymerizable group in the side chain, and polymers containing an allyl group, a (meth) acryl group, an allyloxyalkyl group, etc. in the side chain are useful. is there.

  Examples of the polymer containing these polymerizable groups are shown below, but the polymer is not limited to these as long as it contains an alkali-soluble group such as COOH group, OH group, and ammonium group and a carbon-carbon unsaturated bond.

  As a specific example, a copolymer of an OH group such as 2-hydroxyethyl acrylate, a COOH group such as methacrylic acid, and a monomer such as an acrylic or vinyl compound copolymerizable with these, an OH group For example, a compound obtained by reacting a reactive epoxy group with a compound having a carbon-carbon unsaturated bond group (for example, a compound such as glycidyl acrylate) can be used.

  As the compound having reactivity with the OH group, a compound having an acid anhydride, an isocyanate group, and an acryloyl group can be used in addition to the epoxy ring. Further, a compound obtained by reacting an unsaturated carboxylic acid such as acrylic acid with a compound having an epoxy ring described in JP-A-6-102669 and JP-A-6-1938 is saturated or unsaturated polybasic. A reaction product obtained by reacting an acid anhydride can also be used.

  Examples of the compound having both an alkali solubilizing group such as a COOH group and a carbon-carbon unsaturated group include, for example, Dainar NR series (manufactured by Mitsubishi Rayon Co., Ltd.); Photomer 6173 (COOH group-containing Polyurethane acrylic oligomer, Diamond Shamrock Co.) Ltd.); Biscote R-264, KS resist 106 (both manufactured by Osaka Organic Chemical Industry Co., Ltd.); Cyclomer P series, Plaxel CF200 series (both manufactured by Daicel Chemical Industries, Ltd.); Ebecryl 3800 (Daicel)・ Cytec Co., Ltd.), etc.

  Among these various binders, from the viewpoint of heat resistance, polyhydroxystyrene resins, polysiloxane resins, acrylic resins, acrylamide resins, and acrylic / acrylamide copolymer resins are preferable, and acrylic resins and polyhydroxystyrenes are used. More preferred are resin based resins and polysiloxane based resins. From the viewpoint of control of developability, an acrylic resin, an acrylamide resin, and an acrylic / acrylamide copolymer resin are preferable.

  The acrylic resin has a copolymer composed of a monomer selected from benzyl (meth) acrylate, (meth) acrylic acid, hydroxyethyl (meth) acrylate, (meth) acrylamide, and the like, and a polymerizable side chain ( (Meth) acrylic resin, for example, Cyclomer P series, Plaxel CF200 series (all manufactured by Daicel Chemical Industries, Ltd.), Ebecryl 3800 (manufactured by Daicel Cytec Co., Ltd.), and dialnal NR series (manufactured by Mitsubishi Rayon Co., Ltd.) ), Biscote R264, KS resist 106 (both manufactured by Osaka Organic Chemical Industry Co., Ltd.) and the like are preferable.

  In order to increase the strength of the cured film, alcohol-soluble nylon, polyether of 2,2-bis- (4-hydroxyphenyl) -propane and epichlorohydrin, and the like are also useful.

  Furthermore, an alkali-soluble phenol resin can be used. The alkali-soluble phenol resin can be suitably used when the colorant-containing curable composition of the present invention is configured as a positive type. Examples of the alkali-soluble phenol resin include novolak resins and vinyl polymers.

  Examples of the novolak resin include those obtained by condensing phenols and aldehydes in the presence of an acid catalyst. Examples of phenols include phenol, cresol, ethylphenol, butylphenol, xylenol, phenylphenol, catechol, resorcinol, pyrogallol, naphthol, and bisphenol A. These phenols can be used alone or in combination of two or more. Examples of aldehydes include formaldehyde, paraformaldehyde, acetaldehyde, propionaldehyde, benzaldehyde, and the like.

  Specific examples of the novolak resin include, for example, a condensation product of metacresol, paracresol or a mixture thereof and formalin. The novolak resin may be adjusted in molecular weight distribution using means such as fractionation. Moreover, you may mix the low molecular weight component which has phenolic hydroxyl groups, such as bisphenol C and bisphenol A, in said novolak resin.

The above binder is preferably a polymer having a weight average molecular weight (polystyrene equivalent value measured by GPC method) of 1000 to 2 × 10 ⁵ , more preferably 2000 to 1 × 10 ⁵ , and 3000 to ⁵ × 10. The polymer of ⁴ is particularly preferred.

As content in the coloring agent containing curable composition of the said binder, 10-90 mass% is preferable with respect to the total solid of this composition from a viewpoint of pattern formation (development property),
20-80 mass% is further more preferable, and 30-70 mass% is especially preferable.

<Polymerizable compound>
The colorant-containing curable composition of the present invention can be suitably configured using at least one polymerizable compound (monomer). By containing this polymerizable monomer together with the photopolymerization initiator including the oxime-based photopolymerization initiator described above, the colorant-containing curable composition can be formed into a negative type. In the case of a positive type, it can be further contained together with the photopolymerization initiator including the oxime photopolymerization initiator described above, and in this case, the degree of curing of the pattern to be formed can be further promoted. Hereinafter, the polymerizable compound will be described.

As the monomer, a compound having at least one addition-polymerizable ethylenically unsaturated group having a boiling point of 100 ° C. or higher under normal pressure is preferable.
Examples include monofunctional acrylates and methacrylates such as polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate, and phenoxyethyl (meth) acrylate; polyethylene glycol di (meth) acrylate, trimethylolethanetri (Meth) acrylate, neopentyl glycol di (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, hexanediol (Meth) acrylate, trimethylolpropane tri (acryloyloxypropyl) ether, tri (acryloyloxyethyl) iso A polyfunctional alcohol such as anurate, glycerin, or trimethylolethane, which is obtained by adding ethylene oxide or propylene oxide and then (meth) acrylated; JP-B-48-41708, JP-B-50-6034, JP-A-51-51 Urethane acrylates described in JP-B-37193; polyester acrylates described in JP-A-48-64183, JP-B-49-43191, and JP-B-52-30490; epoxy resin and (meth) acrylic acid And polyfunctional acrylates and methacrylates such as epoxy acrylates, which are reaction products, and mixtures thereof. Furthermore, Japan Adhesion Association Vol. 20, no. 7, pages 300 to 308 are introduced as photocurable monomers and oligomers.

  The monomer is preferably a (meth) acrylic ester monomer and / or a (meth) acrylamide monomer, and more preferably a bifunctional or higher (meth) acrylic ester monomer and / or a (meth) acrylamide monomer. Furthermore, tetrafunctional or higher (meth) acrylic ester monomers are most preferable.

  The content of the monomer in the colorant-containing curable composition is preferably from 0.1 to 90 mass%, more preferably from 1.0 to 80 mass%, based on the total solid content, from the viewpoint of improving the curability of the film. 2.0 to 70% by mass is particularly preferable.

<Other photopolymerization initiators>
The colorant-containing curable composition of the present invention can be suitably configured by using a photopolymerization initiator other than the oxime photopolymerization initiator in addition to the oxime photopolymerization initiator. .

  The other photopolymerization initiator is not particularly limited as long as it can cause a polymerization reaction of the above-described polymerizable compound and other polymerizable compounds, but characteristics, initiation efficiency, absorption wavelength, availability, cost, etc. It is preferably selected from the viewpoint.

Examples of the other photopolymerization initiator include active halogen compounds such as halomethyl oxadiazole compounds and trihalomethyl triazine compounds, benzyl dimethyl ketal compounds, α-hydroxy ketone compounds, α-amino ketone compounds, and phosphine oxides. Compounds, metallocene compounds, triarylimidazole dimers, benzothiazole compounds, benzophenone compounds, acetophenone compounds and derivatives thereof, cyclopentadiene-benzene-iron complexes and salts thereof, 3-aryl substituted coumarin compounds, and the like. At least one selected from the group consisting of an aminoketone compound, a phosphine oxide compound, a metallocene compound, and a triarylimidazole dimer is preferable.
The photopolymerization initiator is preferably a compound that does not generate an acid by decomposition.

  Examples of the active halogen compound include halomethyloxadiazole compounds such as 2-halomethyl-5-vinyl-1,3,4-oxadiazole compounds described in JP-B-57-6096, 2- Trichloromethyl-5-styryl-1,3,4-oxadiazole, 2-trichloromethyl-5- (p-cyanostyryl) -1,3,4-oxadiazole, 2-trichloromethyl-5- (p -Methoxystyryl) -1,3,4-oxadiazole and the like.

  Examples of the trihalomethyl-s-triazine compound include vinyl-halomethyl-s-triazine compounds described in JP-B-59-1281 and 2- (naphtho-1) described in JP-A-53-133428. -Yl) -4,6-bis-halomethyl-s-triazine compounds and 4- (p-aminophenyl) -2,6-di-halomethyl-s-triazine compounds.

  Other examples include 2,4-bis (trichloromethyl) -6-p-methoxystyryl-s-triazine, 2,6-bis (trichloromethyl) -4- (3,4-methylenedioxyphenyl) -1 , 3,5-triazine, 2,6-bis (trichloromethyl) -4- (4-methoxyphenyl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- (1-p -Dimethylaminophenyl-1,3-butadienyl) -s-triazine, 2-trichloromethyl-4-amino-6-p-methoxystyryl-s-triazine, 2- (naphth-1-yl) -4,6- Bis-trichloromethyl-s-triazine, 2- (4-methoxy-naphth-1-yl) -4,6-bis-trichloromethyl-s-triazine, 2- (4-ethoxy-naphth-1-y ) -4,6-bis-trichloromethyl-s-triazine, 2- (4-butoxy-naphth-1-yl) -4,6-bis-trichloromethyl-s-triazine, 2- [4- (2- Methoxyethyl) -naphth-1-yl] -4,6-bis-trichloromethyl-s-triazine, 2- [4- (2-ethoxyethyl) -naphth-1-yl] -4,6-bis-trichloro Methyl-s-triazine, 2- [4- (2-butoxyethyl) -naphth-1-yl] -4,6-bis-trichloromethyl-s-triazine, 2- (2-methoxy-naphth-1-yl) ) -4,6-bis-trichloromethyl-s-triazine, 2- (6-methoxy-5-methyl-naphth-2-yl) -4,6-bis-trichloromethyl-s-triazine, 2- (6 -Methoxy-naphtho-2 Yl) -4,6-bis-trichloromethyl-s-triazine, 2- (5-methoxy-naphth-1-yl) -4,6-bis-trichloromethyl-s-triazine, 2- (4,7- Dimethoxy-naphth-1-yl) -4,6-bis-trichloromethyl-s-triazine,

2- (6-Ethoxy-naphth-2-yl) -4,6-bis-trichloromethyl-s-triazine, 2- (4,5-dimethoxy-naphth-1-yl) -4,6-bis-trichloro Methyl-s-triazine, 4- [p-N, N-di (ethoxycarbonylmethyl) aminophenyl] -2,6-di (trichloromethyl) -s-triazine, 4- [o-methyl-pN, N-di (ethoxycarbonylmethyl) aminophenyl] -2,6-di (trichloromethyl) -s-triazine, 4- [p-N, N-di (chloroethyl) aminophenyl] -2,6-di (trichloro Methyl) -s-triazine, 4- [o-methyl-pN, N-di (chloroethyl) aminophenyl] -2,6-di (trichloromethyl) -s-triazine, 4- (pN-chloroethyla) Nophenyl) -2,6-di (trichloromethyl) -s-triazine, 4- (pN-ethoxycarbonylmethylaminophenyl) -2,6-di (trichloromethyl) -s-triazine, 4- [p- N, N-di (phenyl) aminophenyl] -2,6-di (trichloromethyl) -s-triazine, 4- (p-N-chloroethylcarbonylaminophenyl) -2,6-di (trichloromethyl)- s-triazine, 4- [p-N- (p-methoxyphenyl) carbonylaminophenyl] -2,6-di (trichloromethyl) -s-triazine, 4- [m-N, N-di (ethoxycarbonylmethyl) ) Aminophenyl] -2,6-di (trichloromethyl) -s-triazine, 4- [m-bromo-pN, N-di (ethoxycarbonylmethyl) aminophen L] -2,6-di (trichloromethyl) -s-triazine, 4- [m-chloro-pN, N-di (ethoxycarbonylmethyl) aminophenyl] -2,6-di (trichloromethyl)- s-triazine, 4- [m-fluoro-pN, N-di (ethoxycarbonylmethyl) aminophenyl] -2,6-di (trichloromethyl) -s-triazine,

4- [o-bromo-pN, N-di (ethoxycarbonylmethyl) aminophenyl] -2,6-di (trichloromethyl) -s-triazine, 4- [o-chloro-pN, N- Di (ethoxycarbonylmethyl) aminophenyl-2,6-di (trichloromethyl) -s-triazine, 4- [o-fluoro-pN, N-di (ethoxycarbonylmethyl) aminophenyl] -2,6- Di (trichloromethyl) -s-triazine, 4- [o-bromo-pN, N-di (chloroethyl) aminophenyl] -2,6-di (trichloromethyl) -s-triazine, 4- [o- Chloro-pN, N-di (chloroethyl) aminophenyl] -2,6-di (trichloromethyl) -s-triazine, 4- [o-fluoro-pN, N-di (chloroethyl) aminophenyl -2,6-di (trichloromethyl) -s-triazine, 4- [m-bromo-pN, N-di (chloroethyl) aminophenyl] -2,6-di (trichloromethyl) -s-triazine, 4- [m-chloro-p-N, N-di (chloroethyl) aminophenyl] -2,6-di (trichloromethyl) -s-triazine,

4- [m-Fluoro-pN, N-di (chloroethyl) aminophenyl] -2,6-di (trichloromethyl) -s-triazine, 4- (m-bromo-pN-ethoxycarbonylmethylamino) Phenyl) -2,6-di (trichloromethyl) -s-triazine, 4- (m-chloro-pN-ethoxycarbonylmethylaminophenyl) -2,6-di (trichloromethyl) -s-triazine, 4 -(M-Fluoro-pN-ethoxycarbonylmethylaminophenyl) -2,6-di (trichloromethyl) -s-triazine, 4- (o-bromo-pN-ethoxycarbonylmethylaminophenyl) -2 , 6-Di (trichloromethyl) -s-triazine, 4- (o-chloro-pN-ethoxycarbonylmethylaminophenyl) -2,6-di (trichloro) Methyl) -s-triazine, 4- (o-fluoro-pN-ethoxycarbonylmethylaminophenyl) -2,6-di (trichloromethyl) -s-triazine, 4- (m-bromo-pN- Chloroethylaminophenyl) -2,6-di (trichloromethyl) -s-triazine, 4- (m-chloro-pN-chloroethylaminophenyl) -2,6-di (trichloromethyl) -s-triazine 4- (m-fluoro-pN-chloroethylaminophenyl) -2,6-di (trichloromethyl) -s-triazine, 4- (o-bromo-pN-chloroethylaminophenyl) -2 , 6-Di (trichloromethyl) -s-triazine, 4- (o-chloro-pN-chloroethylaminophenyl) -2,6-di (trichloromethyl) -s-triazine, 4 (O-FLUORO -p-N-chloroethyl aminophenyl) -2,6-di (trichloromethyl) -s-triazine, and the like.

  In addition, TAZ series (for example, TAZ-107, TAZ-110, TAZ-104, TAZ-109, TAZ-140, TAZ-204, TAZ-113, TAZ-123) manufactured by Midori Chemical Co., Ltd., manufactured by PANCHIM T series (for example, T-OMS, T-BMP, T-R, TB), Irgacure series (for example, Irgacure 651, Irgacure 184, Irgacure 500, Irgacure 1000, Irgacure, manufactured by Ciba Specialty Chemicals) 149, Irgacure 819, Irgacure 261), Darocur series (eg Darocur 1173), and 4,4′-bis (diethylamino) -benzophenone, 2- (O-benzoyloxime) -1- [4- (phenylthio) phenyl ] -1,2-octa Dione, 2-benzyl-2-dimethylamino-4-morpholinobutyrophenone, 2,2-dimethoxy-2-phenylacetophenone, 2- (o-chlorophenyl) -4,5-diphenylimidazolyl dimer, 2- (o -Fluorophenyl) -4,5-diphenylimidazolyl dimer, 2- (o-methoxyphenyl) -4,5-diphenylimidazolyl dimer, 2- (p-methoxyphenyl) -4,5-diphenylimidazolyl dimer 2-mer, 2- (p-dimethoxyphenyl) -4,5-diphenylimidazolyl dimer, 2- (2,4-dimethoxyphenyl) -4,5-diphenylimidazolyl dimer, 2- (p-methylmercapto Phenyl) -4,5-diphenylimidazolyl dimer, benzoin isopropyl ether and the like are also useful.

  Examples of the α-aminoketone compound include Irgacure series (for example, Irgacure 907 and Irgacure 369) manufactured by Ciba Specialty Chemicals, 2-methyl-1-phenyl-2-morpholinopropan-1-one, 2-methyl-1- [4- (hexyl) phenyl] -2-morpholinopropan-1-one, 2-ethyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1, etc. Can be mentioned.

  Further, from the viewpoint of availability and stability, the benzyldimethyl ketal compound is Irgacure 651, and the α-hydroxyketone compound is Irgacure 184, 1173, 500, 1000, 2959, etc. Irgacure 1700, 149, 1850, 819, 184, etc. are preferred as the fin oxide compounds (blends), and Irgacure 784, 261, etc. are preferred as the metallocene compounds (all manufactured by Ciba Specialty Chemicals), These analogs / peripheral compounds are also suitable.

  The photopolymerization initiator is preferably a compound that does not generate an acid by decomposition from the viewpoint of light resistance and heat resistance of the dye. Among the other photopolymerization initiators, compounds that do not generate an acid upon decomposition include benzyldimethyl ketal compound, α-hydroxyketone compound, α-aminoketone compound, phosphine oxide compound, metallocene compound, triarylimidazole Preference is given to at least one selected from the group consisting of dimers, benzothiazole compounds, benzophenone compounds, acetophenone compounds and derivatives thereof, and cyclopentadiene-benzene-iron complexes and salts thereof. Furthermore, at least one selected from the group consisting of α-aminoketone compounds, phosphine oxide compounds, metallocene compounds, and triarylimidazole dimers is preferred.

  A sensitizer and a light stabilizer can be used in combination with the photopolymerization initiator. Specific examples include, for example, benzoin, benzoin methyl ether, 9-fluorenone, 2-chloro-9-fluorenone, 2-methyl-9-fluorenone, 9-anthrone, 2-bromo-9-anthrone, 2-ethyl- 9-anthrone, 9,10-anthraquinone, 2-ethyl-9,10-anthraquinone, 2-t-butyl-9,10-anthraquinone, 2,6-dichloro-9,10-anthraquinone, xanthone, 2-methylxanthone 2-methoxyxanthone, 2-ethoxyxanthone, thioxanthone, 2,4-diethylthioxanthone, acridone, 10-butyl-2-chloroacridone, benzyl, dibenzalacetone, p- (dimethylamino) phenylstyryl ketone, p -(Dimethylamino) phenyl-p-methylstyryl Ketone, benzophenone, p- (dimethylamino) benzophenone (or Michler's ketone), p- (diethylamino) benzophenone, benzoanthrone, benzothiazole compounds described in JP-B-51-48516, etc., Tinuvin 1130, 400, etc. Can be mentioned.

In addition to the photopolymerization initiator, other known photopolymerization initiators can also be used.
Specifically, the vicinal polykettle aldonyl compound described in US Pat. No. 2,367,660, the α described in US Pat. Nos. 2,367,661 and 2,367,670 Carbonyl compounds, acyloin ethers described in US Pat. No. 2,448,828, aromatic acyloin compounds substituted with α-hydrocarbons described in US Pat. No. 2,722,512, US Polynuclear quinone compounds described in Patent Nos. 3,046,127 and 2,951,758, and triarylimidazole dimer / p-aminophenyl ketone described in U.S. Pat. No. 3,549,367. Examples thereof include benzothiazole compounds / trihalomethyl-s-triazine compounds described in Japanese Patent Publication No. 51-48516.

  As content in the coloring agent containing curable composition of a photoinitiator, 0.01-50 mass% is preferable with respect to the total solid of a polymeric compound (monomer), and 1-30 mass% is more. 1 to 20% by mass is preferable. When the content is within the above range, it is effective to prevent the molecular weight from becoming too low and the film strength from becoming weak.

  In addition to the above, it is also preferable to add a thermal polymerization inhibitor. Examples of the thermal polymerization inhibitor include hydroquinone, p-methoxyphenol, di-t-butyl-p-cresol, pyrogallol, t-butylcatechol, benzoquinone, 4,4′-thiobis (3-methyl-6-t- Butylphenol), 2,2′-methylenebis (4-methyl-6-tert-butylphenol), 2-mercaptobenzimidazole, and the like are useful.

<Crosslinking agent>
The colorant-containing curable composition of the present invention can also be configured so as to obtain a film that is further cured using a crosslinking agent. In this case, it can comprise using at least 1 type of the crosslinking agent shown below.

  The crosslinking agent that can be used in the present invention is not particularly limited as long as the film can be cured by a crosslinking reaction. For example, (a) an epoxy resin, (b) a methylol group, an alkoxymethyl group, and an acyloxymethyl group. Substituted with at least one group selected from melamine compound, guanamine compound, glycoluril compound, or urea compound substituted with at least one group selected from: (c) methylol group, alkoxymethyl group, and acyloxymethyl group Phenolic compounds, naphthol compounds, or hydroxyanthracene compounds. Of these, polyfunctional epoxy resins are particularly preferred.

  The (a) epoxy resin may be any epoxy resin as long as it has an epoxy group and crosslinkability. For example, bisphenol A glycidyl ether, ethylene glycol diglycidyl ether, butanediol diglycidyl ether, hexanediol Diglycidyl ether, dihydroxybiphenyl diglycidyl ether, diglycidyl phthalate ester, N, N-diglycidyl aniline and other divalent glycidyl group-containing low molecular weight compounds, as well as trimethylolpropane triglycidyl ether, trimethylolphenol triglycidyl Trivalent glycidyl group-containing low molecular weight compounds typified by ether, TrisP-PA triglycidyl ether, pentaerythritol tetraglycidyl ether, tetramethylol bisphenol Tetravalent glycidyl group-containing low molecular weight compounds typified by tetra-A-glycidyl ether, polyvalent glycidyl group-containing low molecular weight compounds such as dipentaerythritol pentaglycidyl ether and dipentaerythritol hexaglycidyl ether, polyglycidyl ( And glycidyl group-containing polymer compounds represented by 1,2-epoxy-4- (2-oxiranyl) cyclohexane adduct of 2,2-bis (hydroxymethyl) -1-butanol and the like. .

  The number of methylol groups, alkoxymethyl groups, and acyloxymethyl groups substituted in the crosslinking agent (b) is 2 to 6 in the case of melamine compounds, in the case of glycoluril compounds, guanamine compounds, and urea compounds. Although it is 2-4, Preferably it is 5-6 in the case of a melamine compound, and 3-4 in the case of a glycoluril compound, a guanamine compound, and a urea compound.

  Hereinafter, the melamine compound, guanamine compound, glycoluril compound and urea compound of (b) are collectively referred to as a compound according to (b) (methylol group-containing compound, alkoxymethyl group-containing compound, or acyloxymethyl group-containing compound). There is.

  The methylol group-containing compound according to (b) can be obtained by heating the alkoxymethyl group-containing compound according to (b) in an alcohol in the presence of an acid catalyst such as hydrochloric acid, sulfuric acid, nitric acid, methanesulfonic acid or the like. The acyloxymethyl group-containing compound according to (b) can be obtained by mixing and stirring the methylol group-containing compound according to (b) with acyl chloride in the presence of a basic catalyst.

Hereinafter, specific examples of the compound according to (b) having the substituent will be given.
Examples of the melamine compound include hexamethylol melamine, hexamethoxymethyl melamine, a compound in which 1 to 5 methylol groups of hexamethylol melamine are methoxymethylated, or a mixture thereof, hexamethoxyethyl melamine, hexaacyloxymethyl melamine, hexamethylol. Examples thereof include compounds in which 1 to 5 methylol groups of melamine are acyloxymethylated, or mixtures thereof.

  Examples of the guanamine compound include tetramethylol guanamine, tetramethoxymethyl guanamine, a compound obtained by methoxymethylating 1 to 3 methylol groups of tetramethylol guanamine, or a mixture thereof, tetramethoxyethyl guanamine, tetraacyloxymethyl guanamine, tetramethylol. Examples thereof include compounds obtained by acyloxymethylating 1 to 3 methylol groups of guanamine or a mixture thereof.

  Examples of the glycoluril compound include tetramethylol glycoluril, tetramethoxymethylglycoluril, a compound obtained by methoxymethylating 1 to 3 methylol groups of tetramethylolglycoluril, or a mixture thereof, or a methylol group of tetramethylolglycoluril. Examples thereof include compounds in which 1 to 3 are acyloxymethylated or a mixture thereof.

Examples of the urea compound include tetramethylol urea, tetramethoxymethyl urea, a compound obtained by methoxymethylating 1 to 3 methylol groups of tetramethylol urea, a mixture thereof, and tetramethoxyethyl urea.
The compounds according to (b) may be used alone or in combination.

The crosslinking agent (c), that is, a phenol compound, a naphthol compound, or a hydroxyanthracene compound substituted with at least one group selected from a methylol group, an alkoxymethyl group, and an acyloxymethyl group is the crosslinking agent (b). As in the case of), intermixing with the overcoated photoresist is suppressed by thermal crosslinking, and the film strength is further increased.
Hereinafter, these compounds may be collectively referred to as a compound according to (c) (a methylol group-containing compound, an alkoxymethyl group-containing compound, or an acyloxymethyl group-containing compound).

  The number of methylol groups, acyloxymethyl groups, and alkoxymethyl groups contained in the cross-linking agent (c) is at least two per molecule, and from the viewpoint of thermal crosslinkability and storage stability, phenol as a skeleton Compounds in which the 2nd and 4th positions of the compound are all substituted are preferred. In addition, the naphthol compound and hydroxyanthracene compound as the skeleton are preferably compounds in which all of the ortho-position and para-position of the OH group are substituted. The 3rd or 5th position of the phenolic compound serving as the skeleton may be unsubstituted or may have a substituent. Also in the naphthol compound, except for the ortho position of the OH group, it may be unsubstituted or may have a substituent.

The methylol group-containing compound according to (c) is a compound in which the ortho-position or para-position (2-position or 4-position) of the phenolic OH group is a hydrogen atom, and this is used as sodium hydroxide, potassium hydroxide, It can be obtained by reacting with formalin in the presence of a basic catalyst such as ammonia or tetraalkylammonium hydroxide.
The alkoxymethyl group-containing compound according to (c) can be obtained by heating the methylol group-containing compound according to (c) in an alcohol in the presence of an acid catalyst such as hydrochloric acid, sulfuric acid, nitric acid, methanesulfonic acid or the like.
The acyloxymethyl group-containing compound according to (c) can be obtained by reacting the methylol group-containing compound according to (c) with an acyl chloride in the presence of a basic catalyst.

  Examples of the skeletal compound in the crosslinking agent (c) include a phenol compound, a naphthol compound, a hydroxyanthracene compound, etc., in which the ortho-position or para-position of the phenolic OH group is unsubstituted. For example, phenol, cresol isomers, 2,3-xylenol, 2,5-xylenol, 3,4-xylenol, 3,5-xylenol, bisphenols such as bisphenol A, 4,4'-bishydroxybiphenyl, TrisP-PA (Honshu Chemical) Kogyo Co., Ltd.), naphthol, dihydroxynaphthalene, 2,7-dihydroxyanthracene, and the like are used.

  Specific examples of the crosslinking agent (c) include a compound obtained by methoxymethylating one or two methylol groups of trimethylolphenol, tri (methoxymethyl) phenol, trimethylolphenol as a phenol compound or a naphthol compound, trimethylol Compounds obtained by methoxymethylating one or two methylol groups of -3-cresol, tri (methoxymethyl) -3-cresol, trimethylol-3-cresol, dimethylol cresol such as 2,6-dimethylol-4-cresol , Tetramethylol bisphenol A, tetramethoxymethyl bisphenol A, compounds obtained by methoxymethylating 1 to 3 methylol groups of tetramethylol bisphenol A, tetramethylol-4,4'-bishydroxybiphenyl, tetramethoxymethyl -4,4'-bishydroxybiphenyl, trimethylP-PA hexamethylol, TrisP-PA hexamethoxymethyl, TrisP-PA hexamethylol compound obtained by methoxymethylating 1 to 5 methylol groups, bis And hydroxymethylnaphthalenediol.

Examples of the hydroxyanthracene compound include 1,6-dihydroxymethyl-2,7-dihydroxyanthracene.
Examples of the acyloxymethyl group-containing compound include compounds obtained by partially or fully acyloxymethylating the methylol group of the methylol group-containing compound.

Among these compounds, trimethylolphenol, bishydroxymethyl-p-cresol, tetramethylolbisphenol A, trisP-PA (manufactured by Honshu Chemical Industry Co., Ltd.) or a methylol group thereof is preferable. Examples thereof include an alkoxymethyl group and a phenol compound substituted with both a methylol group and an alkoxymethyl group.
These compounds according to (c) may be used alone or in combination.

  The total content of the crosslinking agent in the colorant-containing curable composition when the crosslinking agent (a) to (c) is contained varies depending on the material, but the solid content (mass) of the composition is different. On the other hand, 1-70 mass% is preferable, 5-50 mass% is more preferable, and 7-30 mass% is especially preferable.

<Photo acid generator>
The colorant-containing curable composition of the present invention may contain a photoacid generator.
The photoacid generator is not particularly limited as long as it is a compound that generates an acid by light. For example, α- (4-toluenesulfonyloxyimino) phenylacetonitrile (α- (4-toluenesulfoxylominoimino) phenylacetonitrile) and the like are various. Examples include oxime compounds, various iodonium compounds, various sulfonium compounds, various trihalomethyltriazine compounds, and the like.

  The photoacid generator is a compound represented by the above-described general formula (I) (and other cases depending on the case when adding an acid-condensable curing method to the colorant-containing curable composition of the present invention). A known colorant) and a photopolymerization initiator according to the present invention, a polymerizable compound and a binder, and a crosslinking agent as necessary can be used in combination.

<Solvent>
The colorant-containing curable composition of the present invention may contain a solvent.
Specifically, preferred examples of the solvent include glycol ether solvents, alcohol solvents, ester solvents, ketone solvents, amide solvents, and chlorine-containing solvents.

  Examples of the glycol ether solvent include ethyl cellosolve (ethylene glycol monoethyl ether), methyl cellosolve (ethylene glycol monomethyl ether), butyl cellosolve (ethylene glycol monobutyl ether), methylmethoxybutanol (3-methyl-3-methoxybutanol), butyl Carbitol (diethylene glycol monobutyl ether), ethylene glycol monoethyl ether acetate, ethylene glycol mono-t-butyl ether, propylene glycol monomethyl ether acetate, propylene glycol monomethyl ether (1-methoxy-2-propanol), propylene glycol monoethyl ether (1 -Ethoxy-2-propanol), propylene glycol monoethyl ether Seteto, and the like are preferable.

  As the alcohol solvent, methanol, ethanol, isopropanol, normal propyl alcohol, isobutyl alcohol, normal butyl alcohol, and the like are preferable.

  Examples of the ester solvent include ethyl acetate, normal butyl acetate, isobutyl acetate, cellosolve acetate (ethylene glycol monomethyl ether acetate), methoxybutyl acetate (3-methoxybutyl acetate), 3-methyl-3-methoxybutyl acetate, 3- Ethyl ethoxypropionate (EEP), lactate ester (for example, methyl lactate, ethyl lactate, propyl lactate, butyl lactate, etc.) and the like are preferable.

  Examples of the ketone solvent include 2-butanone (MEK), methyl isobutyl ketone (MIBK), cyclohexanone, cyclopentanone, acetone, diacetone alcohol (4-hydroxy-4-methyl-2-pentanone), and isophorone (3, 3). 5,5-trimethyl-2-cyclohexen-1-one), diisobutyl ketone (2,6-dimethyl-4-heptanone) and the like are preferable.

  As the amide solvent, dimethylformamide (DMF), N-methylpyrrolidone (4-methylaminolactam or NMP) and the like are preferable.

  As the chlorine-containing solvent, 1,1,1-trichloroethane, trichloroethylene, perchloroethylene, methylene chloride, carbon tetrachloride, chloroform, dichloroethane, dichlorobenzene and the like are preferable.

  When the above-mentioned solvent is selectively combined with the compound represented by the general formula (I), it is effective to improve solubility and stability over time during storage after dissolution.

In the present invention, two or more solvents may be used in combination.
As content in the coloring agent containing curable composition of the solvent in this invention, 10-100,000 mass% is preferable with respect to the mass of the pigment | dye compound represented by the said general formula (I), 20-10000 mass%. Is more preferable, and 30-10000 mass% is especially preferable. When the content is within the above range, the solubility of the colorant in the composition and the temporal stability during storage after dissolution can be effectively improved.

  Among the above solvents, ethyl cellosolve (ethylene glycol monoethyl ether), methyl cellosolve (ethylene glycol monomethyl ether), butyl cellosolve (ethylene glycol monobutyl ether), methylmethoxybutanol (3-methyl-3-methoxybutanol), butyl carbitol ( Diethylene glycol monobutyl ether), ethylene glycol monoethyl ether acetate, ethylene glycol mono-t-butyl ether, propylene glycol monomethyl ether acetate, propylene glycol monomethyl ether (1-methoxy-2-propanol), propylene glycol monoethyl ether (1-ethoxy- 2-propanol), propylene glycol monoethyl ether acetate,

Ethyl acetate, normal butyl acetate, isobutyl acetate, cellosolve acetate (ethylene glycol monomethyl ether acetate), methoxybutyl acetate (3-methoxybutyl acetate), 3-methyl-3-methoxybutyl acetate, ethyl 3-ethoxypropionate (EEP) , Methyl lactate, ethyl lactate, propyl lactate, butyl lactate,

2-butanone (MEK), methyl isobutyl ketone (MIBK), cyclohexanone, cyclopentanone, diacetone alcohol (4-hydroxy-4-methyl-2-pentanone), isophorone (3,5,5-trimethyl-2-cyclo) Hexen-1-one), diisobutyl ketone (2,6-dimethyl-4-heptanone),

N-methylpyrrolidone (4-methylaminolactam or NMP),

Methanol, ethanol, isopropanol, normal propyl alcohol, isobutyl alcohol, normal butyl alcohol, and the like are preferable.
In the present invention, three or more of the above solvents may be used in combination.

  Furthermore, in preparing the colorant-containing curable composition of the present invention, a solvent other than the above-described solvents may be used in combination. The other solvent is not particularly limited as long as the solubility of each component and the coating property of the colorant-containing curable composition are satisfied, but in particular, the solubility, coating property, and safety of the colorant and binder are taken into consideration. Is preferably selected.

  Examples of the other solvent include esters other than those exemplified above, such as amyl formate, isoamyl acetate, butyl propionate, isopropyl butyrate, ethyl butyrate, butyl butyrate, alkyl esters, methyl oxyacetate, ethyl oxyacetate, oxy Butyl acetate, methyl methoxyacetate, ethyl methoxyacetate, butyl methoxyacetate, methyl ethoxyacetate, ethyl ethoxyacetate, etc .;

3-oxypropionic acid alkyl esters such as methyl 3-oxypropionate and ethyl 3-oxypropionate (eg, methyl 3-methoxypropionate, ethyl 3-methoxypropionate, methyl 3-ethoxypropionate, etc.); 2-oxypropionic acid alkyl esters such as methyl 2-oxypropionate, ethyl 2-oxypropionate, propyl 2-oxypropionate (for example, methyl 2-methoxypropionate, ethyl 2-methoxypropionate, 2-methoxy Propyl propionate, methyl 2-ethoxypropionate, ethyl 2-ethoxypropionate, methyl 2-oxy-2-methylpropionate, ethyl 2-oxy-2-methylpropionate, methyl 2-methoxy-2-methylpropionate 2-ethoxy-2- Chirupuropion ethyl, etc.); methyl pyruvate, ethyl pyruvate, propyl pyruvate, methyl acetoacetate, ethyl acetoacetate, methyl 2-oxobutanoate, ethyl 2-oxobutanoate, etc .;

Ethers other than those exemplified above, such as diethylene glycol dimethyl ether, tetrahydrofuran, methyl cellosolve acetate, ethyl cellosolve acetate, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, propylene glycol propyl ether acetate, etc .;

Ketones other than those exemplified above, for example, methyl ethyl ketone, 2-heptanone, 3-heptanone, etc .; aromatic hydrocarbons, for example, toluene, xylene and the like.

  Among these, methyl 3-ethoxypropionate, ethyl cellosolve acetate, diethylene glycol dimethyl ether, methyl 3-methoxypropionate, 2-heptanone, ethyl carbitol acetate, butyl carbitol acetate, and the like are more preferable.

<Various additives>
The colorant-containing curable composition of the present invention includes various additives as necessary, for example, fillers, polymer compounds other than those described above, surfactants, adhesion promoters, antioxidants, ultraviolet absorbers, and aggregation. An inhibitor or the like can be blended.

  Specific examples of various additives include fillers such as glass and alumina; polymer compounds other than binder resins such as polyvinyl alcohol, polyacrylic acid, polyethylene glycol monoalkyl ether, and polyfluoroalkyl acrylate; nonionic and cationic systems , Anionic surfactants; vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, N- (2- Aminoethyl) -3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2- (3,4-epoxycyclohexyl) Ethyltrimethoxy , 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, and other adhesion promoters; 2,2-thiobis (4-methyl- 6-t-butylphenol), 2,6-di-t-butylphenol and other antioxidants; 2- (3-t-butyl-5-methyl-2-hydroxyphenyl) -5-chlorobenzotriazole, alkoxybenzophenone, etc. And an anti-aggregation agent such as sodium polyacrylate.

Further, when the alkali solubility of the uncured part is promoted and the developability of the colorant-containing curable composition of the present invention is further improved, the composition has an organic carboxylic acid, preferably a molecular weight of 1000 or less. Addition of a low molecular weight organic carboxylic acid can be performed.
Specifically, for example, aliphatic monocarboxylic acids such as formic acid, acetic acid, propionic acid, butyric acid, valeric acid, pivalic acid, caproic acid, diethyl acetic acid, enanthic acid, caprylic acid; oxalic acid, malonic acid, succinic acid, Aliphatic dicarboxylic acids such as glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, brassic acid, methylmalonic acid, ethylmalonic acid, dimethylmalonic acid, methylsuccinic acid, tetramethylsuccinic acid, citraconic acid; Aliphatic tricarboxylic acids such as tricarballylic acid, aconitic acid, camphoric acid; aromatic monocarboxylic acids such as benzoic acid, toluic acid, cumic acid, hemelitic acid, mesitylene acid; phthalic acid, isophthalic acid, terephthalic acid, trimellitic acid, Aromatic polycarboxylic acids such as trimesic acid, melophanoic acid, pyromellitic acid; phenylacetic acid Hydratropic acid, hydrocinnamic acid, mandelic acid, phenyl succinic acid, atropic acid, cinnamic acid, methyl cinnamate, benzyl cinnamate, cinnamylidene acetic acid, coumaric acid, other carboxylic acids such as umbellic acid.

  The colorant-containing curable composition of the present invention is used for forming a color pixel such as a color filter used in a liquid crystal display element (LCD), a solid-state imaging element (for example, CCD, CMOS, etc.), a printing ink, It can be suitably used for producing ink jet inks and paints.

≪Color filter and manufacturing method≫
Next, the color filter of the present invention and the manufacturing method thereof will be described in detail.
The color filter of the present invention comprises a colorant-containing curable composition containing a compound represented by the general formula (I) (including a tautomer) and an oxime photopolymerization initiator. is there.

Specifically, this colorant-containing curable composition is applied onto a support by a coating method such as spin coating, cast coating, roll coating, etc. to form a radiation-sensitive composition layer, It can be produced by forming a colored pattern (resist pattern, sometimes simply referred to as “pattern” in the present invention) by exposing through a mask pattern and developing with a developer (pattern forming step). At this time, if necessary, a curing step of curing the formed colored pattern by heating and / or exposure can be provided.
As light or radiation used at this time, ultraviolet rays such as g-line, h-line and i-line are particularly preferably used.

  In the production of a color filter, by repeating the pattern formation step (and the curing step if necessary) according to the desired number of hues, a color filter configured with a desired number of hues can be produced.

Examples of the support include soda glass, Pyrex (registered trademark) glass, and quartz glass used for liquid crystal display elements and the like, and those obtained by attaching a transparent conductive film thereto, and photoelectric conversion element substrates used for imaging elements and the like. Examples thereof include a silicon substrate and a complementary metal oxide semiconductor (CMOS). On these supports, black stripes for isolating each pixel may be formed.
Further, if necessary, an undercoat layer may be provided on these supports in order to improve adhesion to the upper layer, prevent diffusion of substances, or flatten the substrate surface.

  The developer used in the method for producing a color filter of the present invention may be any developer as long as it has a composition that dissolves the uncured portion of the colorant-containing curable composition of the present invention but does not dissolve the cured portion that forms the filter. Things can also be used. Specifically, a combination of various organic solvents or an alkaline aqueous solution can be used. Examples of the organic solvent include the above-described solvents used for preparing the composition of the present invention.

  Examples of the alkaline aqueous solution include sodium hydroxide, potassium hydroxide, sodium carbonate, sodium oxalate, sodium metasuccinate, aqueous ammonia, ethylamine, diethylamine, dimethylethanolamine, tetramethylammonium hydroxide, tetraethylammonium hydroxide. , Choline, pyrrole, piperidine, alkaline compounds such as 1,8-diazabicyclo- [5.4.0] -7-undecene, the concentration is 0.001 to 10% by mass, preferably 0.01 to 1% by mass. An alkaline aqueous solution obtained by dissolution is preferable. When a developer composed of such an alkaline aqueous solution is used, it is generally washed with water after development.

  The color filter of the present invention can be used for a solid-state image pickup device such as a liquid crystal display device or a CCD, and is particularly suitable for a high-resolution CCD device or a CMOS device having more than 1 million pixels. The color filter of the present invention can be used as, for example, a color filter disposed between a light receiving portion of each pixel constituting a CCD and a microlens for condensing light.

  EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to the following examples unless it exceeds the gist thereof. Unless otherwise specified, “part” is based on mass.

[Synthesis of Compound Represented by General Formula (I)]
<1. Synthesis of Exemplary Compound (1)>
According to the following scheme, the exemplified compound (1) described above of the compound represented by the general formula (I) was synthesized.

(Step A; synthesis of compound (1-5))
First, in Step A, 31.54 g of compound (1-2) and 33.93 g of compound (1-1) are mixed, and the reaction mixture is stirred at 70 ° C. for 3 hours to obtain compound (1-3). It was. Subsequently, the obtained compound (1-3) was cooled to room temperature, 90 ml of ethanol and 41.80 g of the compound (1-4) were added thereto, and the temperature was raised to 45 ° C. Further, an ethanol solution of potassium hydroxide (KOH 25.25 g, ethanol 150 ml) was added dropwise to the reaction mixture, followed by stirring at 85 ° C. for 6 hours. And the solvent was distilled off from the reaction mixture, 45 g of hydrochloric acid was then added, and the precipitate was filtered. To the filtrate, 1300 ml of acetone and 250 ml of ethyl acetate were added, and the precipitate was separated by decantation. The liquid phase was dried over magnesium sulfate, and the solvent was distilled off to obtain compound (1-5) (yield 68.23 g, yield 95%).

(Step B; Synthesis of Exemplary Compound 1)
-Synthesis of Compound (1-7)-
Separately, 33.24 g of compound (1-6), 75 ml of orthodichlorobenzene, 7.5 ml of distilled water, and 16.72 g of compound (1-2) were mixed and heated to 45 ° C., and then 7.95 g of sodium carbonate. Was added dropwise and stirred for 30 minutes. Furthermore, after stirring at 70 degreeC for 1 hour, it cooled to room temperature, filtered the reaction mixture, washed with water, and obtained compound (1-7) (yield 41.37 g, yield 95%).

-Synthesis of Compound (1-8)-
Next, 27.3 g of reduced iron, 19.5 g of acetic acid, and 58.5 g of water were mixed and stirred at 80 ° C. for 1 hour, and 22.77 g of the compound (1-7) obtained above was gradually added thereto. Added. Furthermore, 93.6 ml of ethanol was added dropwise thereto and stirred at 80 ° C. for 1 hour. Next, the mixture was cooled to room temperature, an aqueous solution of 23.79 g of sodium carbonate was added to the reaction mixture, 175 ml of methanol was added, and the mixture was stirred for 15 minutes. Subsequently, the mixture was filtered through Celite and washed with acetone, and then the solvent in the liquid phase was distilled off. Further, this was dissolved in 600 ml of acetone, insolubles were removed, dried over sodium sulfate, and concentrated to obtain compound (1-8) (yield: about 16 g, yield: about 79%).

-Preparation of diazo solution-
Next, 3.12 g of the compound (1-8) obtained above, 12.5 ml of 36% hydrochloric acid, and 57 ml of distilled water were mixed and cooled to 0 ° C. A sodium nitrite aqueous solution (NaNO ₂ : 0.84 g, water: 10 g) was added dropwise thereto while maintaining the internal temperature at 5 ° C. or lower. After the dropping, the reaction mixture was maintained at 5 to 10 ° C. and stirred for 3 hours to prepare a diazo solution.

-Synthesis of Exemplified Compound 1-
The obtained diazo solution was mixed with a solution of the compound (1-5) prepared in the step A (3.03 g of the compound (1-5) and 20 g of water, and 2N aqueous sodium hydroxide solution was added to adjust the pH to 8. Was adjusted at 0 ° C. or lower over 1 hour. Next, a 10% aqueous sodium carbonate solution was added dropwise to the solution to adjust the pH to 6 to 7, followed by filtration. Furthermore, it melt | dissolved in 500 ml of acetone, activated carbon and sodium sulfate were added, and cerite filtration was carried out. Subsequently, the solvent was distilled off from the solution, and the solid was vacuum-dried to obtain 3.10 g of the target compound (1) described above (yield 51%).

(Structure confirmation)
The structure of the exemplified compound (1) obtained above was confirmed by NMR. As a result, ¹ H-NMR (300 MHz, solvent: dimethyl-d ₆ sulfoxide, standard substance: tetramethylsilane) δ 7.89 ppm (4H , D), 7.75 (1H, t), 4.55 (2H, br. S), 4.05 (2H, t), 3.60 (2H, t), 3.50 to 3.20 ( 14H, m), 2.95 (2H, q), and 2.55 (3H, s).

(Measurement of maximum absorption wavelength, molar extinction coefficient, and half width)
Further, the obtained exemplified compound (1) was dissolved in methanol to prepare a solution having a concentration of about 1.0 × 10 ⁻⁵ mol / l, and a spectrophotometer (trade name: UV-2500PC, (stock) The maximum absorption wavelength (λ _max ) and molar extinction coefficient (ε) were measured, and the half-value width was measured from the waveform. As a result, in methanol, λ _max = 425 nm, ε = 41400 [l · mol ⁻¹ · cm ⁻¹ ], and half-width = 69.5 nm.

<2. Synthesis of Exemplary Compound (56)>
First, in the synthesis of compound (1-7) in step B of <Synthesis of exemplary compound (1)>, compound (1-2) is replaced with methyl-4-aminobenzoate, and further compound (1) in step A is synthesized. In the synthesis of -5), synthesis was carried out in the same manner as in <Synthesis of Exemplified Compound (1)> except that Compound (1-2) was replaced with 2-ethylhexylamine. Obtained.

(Hydrolysis)
Next, 10.00 g of the obtained exemplary compound (71), 500 g of acetone, and 400 g of 1N aqueous sodium hydroxide solution were mixed and stirred at 45 ° C. for 7 hours. And after distilling acetone off and adding 2500 ml of water, hydrochloric acid was dripped and it adjusted to pH3, Then, it filtered. The solid was washed with water, dissolved in 130 ml of ethyl acetate, and filtered through Celite. Subsequently, the organic layer was washed with water, the solvent was distilled off, and the solid was dried under vacuum to obtain the exemplified compound (72) described above (yield 9.26 g, yield 95%).

(Salt exchange)
Next, 4.5 g of the obtained exemplary compound (72) and 480 ml of methanol were mixed, and this was mixed with strontium hydroxide octahydrate methanol solution (Sr (OH) ₂ .8H ₂ O: 1.06 g, methanol: 22.5 ml) was added dropwise and stirred for 10 minutes. Subsequently, the solvent was distilled off, and the solid was vacuum-dried to obtain 4.47 g of the target compound (56) described above (yield 92%).

(Confirmation of structure and measurement of maximum absorption wavelength, molar extinction coefficient, and half width)
About the above-mentioned exemplary compound (56) obtained from the above, the structure confirmation by NMR and the measurement of (lambda) _max , (epsilon), and a half value width were performed similarly to the said <synthesis of exemplary compound (1)>.
¹ H-NMR (300 MHz, solvent: dimethyl-d ₆ sulfoxide, standard substance: tetramethylsilane) δ 7.80 ppm (4H, m), 7.67 (2H, d), 7.18 (2H, d), 3 .73 (2H, ddd), 2.50 (3H, s), 1.74 ppm (1H, m), 1.40 to 1.00 (8H, m), 0.95 to 0.75 (6H, m) )Met. Further, in tetrahydrofuran, λ _max = 428.0 nm, ε = 80900 [l · mol ⁻¹ · cm ⁻¹ ], and half-width = 68.5 nm.

<Synthesis of Exemplary Compound (34)>
In the same manner as in <Synthesis of Exemplified Compound (1)>, the pyridone azo compound of the present invention [Exemplified Compound (34) described above] is obtained, and the structure confirmation by NMR, λmax, ε, and half-value width are similarly obtained. Measurements were made.
1H-NMR (300 MHz, solvent: dimethyl-d6 sulfoxide, standard substance: tetramethylsilane) δ 7.95-7.80 (4H, m), 7.70 (1H, t), 4.55 (1H, br. s), 3.75 ppm (2H, t), 3.45 (2H, m), 3.35 (2H, m), 2.95 (2H, q), 2.55 (3H, s), 1. 80 (1H, m), 1.25 (8H, m), and 0.85 (6H, m).
In methanol, λmax = 426.5 nm and ε = 44980 [l · mol−1 cm−1] (half-value width = 68.5 nm).

[Example 1]
1) Preparation of undercoat layer solution The following composition was mixed and dissolved to prepare an undercoat layer solution.
<Composition of undercoat layer solution>
・ Propylene glycol monomethyl ether acetate ... 19.00 parts (PGMEA)
-Ethyl lactate ... 36.00 parts-Cyclohexanone ... 0.87 parts-Binder ... 30.51 parts (allyl methacrylate / methacrylic acid copolymer (molar ratio = 65:35) in 41% PGMEA solution )
Dipentaerythritol hexaacrylate 12.20 parts Polymerization inhibitor (p-methoxyphenol) 0.0075 parts 2- (O-benzoyloxime) -1- [4- (phenylthio) phenyl] -1,2-octanedione (photopolymerization initiator) 0.70 part

2) Preparation of glass substrate with undercoat layer A glass substrate (Corning 1737) was ultrasonically washed with 1% NaOH water, and then washed with water and dehydrated (200 ° C./30 minutes). Next, the undercoat layer liquid 1) is applied onto a cleaned glass substrate using a spin coater to a film thickness of 2 μm, heated at 220 ° C. for 1 hour and dried to form a cured film. An attached glass substrate was obtained.

3) Preparation of dye resist solution The following composition was mixed and dissolved to prepare a dye resist solution.
[Composition of dye resist solution]
· Cyclohexanone (solvent) · · · 80.00 parts · Dipentaerythritol hexaacrylate (polymerizable compound) · · · 5.80 parts · The following compound I-1 (oxime photopolymerization initiator) · · · 3.30 Part Dye M-1 below 7.65 parts Example Compound (56) described above 3.35 parts (Compound represented by formula (I))

4) Exposure and development of colored resist (formation of colored pattern)
The dye resist solution obtained in 3) above was applied on the undercoat layer of the glass substrate with an undercoat layer obtained in 2) above using a spin coater so that the film thickness was 1.0 μm. Pre-baked for 2 seconds. Next, using an exposure apparatus, the coating film was irradiated with an exposure dose of 800 mJ / cm ² through a mask having a wavelength of 365 nm and a thickness of 20 μm. After the exposure, the film was developed with a developer (trade name: CD-2000, 100%, manufactured by Fuji Film Electronics Materials Co., Ltd.) at 26 ° C. for 60 seconds. Thereafter, it was rinsed with running water for 20 seconds and spray-dried to form an image.

5) Evaluation <1. Confirmation of pattern shape>
The shape of the formed pattern was confirmed by an ordinary method using an optical microscope and SEM photograph observation.

<2. Pattern formability>
Using a chromaticity meter (trade name: MCPD-1000, manufactured by Otsuka Electronics Co., Ltd.), the unexposed area developability and the exposed area residual film ratio were measured before and after the development processing after exposure. “Unexposed area developability” is the rate of change of the absorbance value of the film before and after development, and in the case of a negative photosensitive composition, the larger the value, the better the developability. The “exposed portion residual film ratio” is a maintenance ratio of the absorbance value of the film before and after development, and in the case of a negative photosensitive composition, a larger value is better. That is, a high value for both the unexposed area developability and the exposed area residual film ratio means that the pattern formability is good.

<3. Heat resistance>
The glass substrate coated with the dye resist solution is heated with a hot plate at 200 ° C. for 1 hour so as to be in contact with the non-coated surface of the glass substrate, and then a chromaticity meter (trade name: MCPD-1000, manufactured by Otsuka Electronics Co., Ltd.). ), Chromaticity change, that is, ΔEab value was measured. The ΔEab value indicates that the smaller the value, the better the heat resistance.

<4. Light resistance>
A glass substrate coated with a dye resist solution is irradiated with a xenon lamp at 200,000 lux for 10 hours (equivalent to 2 million lux · h), and then a chromaticity meter (trade name: MCPD-1000, manufactured by Otsuka Electronics Co., Ltd.) The chromaticity change, that is, the ΔEab value was measured. The ΔEab value indicates that the smaller the value, the better the light resistance.

<5. Molar extinction coefficient (ε) and color value>
Using a spectrophotometer UV-2500PC (manufactured by Shimadzu Corporation), the absorbance in methanol was measured, and the molar extinction coefficient (ε) was calculated from the measured absorbance. The color value is a value (ε / Mw) obtained by dividing the molar extinction coefficient (ε) by the weight average molecular weight Mw of the dye.

<6. Solubility of dye resist>
After preparing the dye resist solution, it was allowed to stand for one week, and the presence or absence of precipitation and sedimentation of the content components was visually evaluated. In the evaluation, a case where precipitation / sedimentation was not confirmed was evaluated as “◯”, and a case where deposition / sedimentation was confirmed was evaluated as “x”. “◯” indicates that the resist solution has good solubility and storage stability.

[Examples 2 to 7]
In Example 3 “3) Preparation of dye resist solution”, an image was formed in the same manner as in Example 1 except that the combination of the colorant and the photopolymerization initiator was changed as shown in Table 1 below. The same evaluation was performed. The evaluation results are shown in Table 1 below.

[Examples 8 to 14]
In Examples 1 to 7, a pattern was formed and the same evaluation was performed in the same manner as in each of Examples 1 to 7, except that the glass substrate was replaced with a silicon wafer substrate. The same results as in Examples 1 to 7 were obtained in the unexposed area developability, the exposed area residual film ratio, and the heat resistance, light resistance and others. In Examples 8 to 14, the substrate is different from Examples 1 to 7 in that a silicon wafer substrate is used, but the dye resist solution was all applied on the undercoat layer through Examples 1 to 14. There was no substantial difference and the same performance could be obtained.

[Examples 15 to 17]
In Example 3 “3) Preparation of dye resist solution”, an image was formed in the same manner as in Example 1 except that the combination of the colorant and the photopolymerization initiator was changed as shown in Table 1 below. The same evaluation was performed. The evaluation results are shown in Table 1 below.

Example 18
In “1) Preparation of dye resist solution” in Example 1, an image was formed and evaluated in the same manner as in Example 1 except that the dye resist solution was replaced with the following composition. The evaluation results are shown in Table 1 below.
<Composition of dye resist solution>
・ N-methylpyrrolidone (solvent) ・ ・ ・ 40 parts ・ Ethyl lactate (solvent) ・ ・ ・ 40 parts ・ Binder ・ ・ ・ 1.28 parts [Allyl methacrylate / methacrylic acid (molar ratio = 70/30 [molar ratio]) ) Copolymer]
-Dipentaerythritol hexaacrylate (polymerizable compound)-4.4125 parts-Polymerization inhibitor (p-methoxyphenol)-0.0075 parts-Compound I-1 (oxime photopolymerization initiator) ··· 3.30 parts · Said dye M-1 ··· 7.65 parts · Exemplified compound (56) already described ··· 3.35 parts (compound represented by formula (I))

[Comparative Examples 1-3]
In Example 3, “3) Preparation of dye resist solution”, an image was formed in the same manner as in Example 1 except that the photopolymerization initiator or the colorant was changed as shown in Table 1 below. Was evaluated. The evaluation results are shown in Table 1 below.

As shown in Table 1, in Examples using a combination of the compound represented by the general formula (I) and the oxime photopolymerization initiator, not only the heat resistance, light resistance, and color value (ε / Mw) were used. Even when the dye concentration was very high, the stability over time during storage of the liquid was good and the solubility was excellent. At the same time, the unexposed area developability and the exposed area residual film ratio can also be improved, and the pattern formation is excellent. In particular, the composition is formed using a solvent having high environmental compatibility and safety, and the solubility and stability over time during storage of the liquid can be ensured.
On the other hand, in the comparative example using other initiators other than the oxime type, particularly an initiator that generates an acid by decomposition, the heat resistance, light resistance, developability, and liquid storage stability are inferior, and are listed in Table 1. It was difficult to satisfy various performances simultaneously.

  As described above, the effect of the present invention when the exemplified compound (56) or (34) of the compound represented by the general formula (I) is used in combination with the oxime photopolymerization initiator has been described. Even when the exemplified compounds ((1) to (33), (35) to (55), (57) to (72)) are used in combination with an oxime-based photopolymerization initiator, It is.

Claims (3)

A colorant-containing curable composition comprising a compound represented by the following general formula (I) and / or a tautomer thereof and an oxime photopolymerization initiator.

[In the general formula ^{(I), R 1, R} 3, and R ⁴ are each independently a hydrogen atom, an alkyl group of 1 to 21 carbon atoms, an alkenyl group having 2 to 21 carbon atoms, of 6 to 21 carbon atoms It represents an aryl group, an aralkyl group having 7 to 21 carbon atoms, or a substituent having a hetero atom, and at least one of R ¹ , R ³ and R ⁴ is a substituent having a hetero atom. R ³ and R ⁴ may form a heterocyclic ring together with the nitrogen atom bonded thereto. R ² represents an alkyl group having 1 to 10 carbon atoms, a methoxymethyl group, or a trifluoromethyl group. ]   A color filter comprising the colorant-containing curable composition according to claim 1.   It has the process of apply | coating the coloring agent containing curable composition of Claim 1 on a support body, forming a coating film, exposing this coating film through a mask, and developing and forming a pattern, It is characterized by the above-mentioned. A method for manufacturing a color filter.