JP6457719B2 - Photocurable composition - Google Patents

Description

  The present invention relates to a photocurable composition containing a photopolymerizable unsaturated compound having a specific structure and a polyfunctional thiol compound.

A photocurable composition contains a pigment, a photopolymerizable unsaturated compound, and a photoinitiator. Since this photocurable composition can be polymerized and cured by irradiation with ultraviolet rays or an electron beam, particularly when a black pigment is used, the color filter R, G, It is useful as a black matrix provided at the boundary between the colored layers of B.
Recently, in the black matrix manufacturing process, there is not enough adhesion with the transparent substrate of the black pattern obtained through exposure, development and post cure, it is formed first by repeating the peeling process to form the black pattern There is a problem that a part of the colored pattern is peeled off at the same time, the pattern is lost, or the exposed and cured part remains on the transparent substrate.

  Patent Documents 1 and 2 below disclose photosensitive compositions containing a polyfunctional thiol as a photopolymerization initiator and a compound having an ethylenically unsaturated bond. Patent Document 3 below discloses a light-shielding black resist composition containing a binder resin, a compound having an ethylenically unsaturated bond, a photopolymerization initiator, a black pigment, a solvent, and a thiol compound. However, Patent Documents 1 and 2 do not describe or suggest a photopolymerizable unsaturated compound having a specific structure of the present invention, and Patent Document 3 also discloses a specific structure of the present invention as the binder resin. There is no description or suggestion of photopolymerizable unsaturated compounds having In addition, Patent Document 4 below discloses an alkali-developable photosensitive resin composition containing a photopolymerizable unsaturated compound having a specific structure and a photopolymerization initiator, but using a polyfunctional thiol in combination. Is not described or suggested.

JP 2003-252918 A JP 2004-325735 A JP 2004-325734 A International Publication No. 2008-139924

  Accordingly, an object of the present invention is to provide a high-resistance photocurable composition that is excellent in sensitivity and heat resistance and can obtain an appropriate pattern shape and fine pattern.

  As a result of intensive studies, the present inventors have obtained an epoxy addition compound having a structure in which an unsaturated monobasic acid is added to an epoxy compound represented by the following general formula (I), and a polybasic acid anhydride: Photocuring containing photopolymerizable unsaturated compound (A), polyfunctional thiol compound (B), photopolymerization initiator (C) and colorant (D) having a structure which is a reaction product obtained by esterification reaction The present inventors have found that a curable composition can achieve the above object, and have found that the above photocurable composition is suitable for a color filter, and have reached the present invention.

（式中、Ｒ¹、Ｒ²、Ｒ³及びＲ⁴は、それぞれ独立に、水素原子、炭素原子数１〜５のアルキル基、炭素原子数１〜８のアルコキシ基、炭素原子数２〜５のアルケニル基又はハロゲン原子を表し、Ｙ及びＺは、それぞれ独立して、炭素原子数１〜２０のアルキル基、炭素原子数６〜３０のアリール基、炭素原子数７〜３０のアリールアルキル基、炭素原子数２〜２０の複素環基、又はハロゲン原子を表し、上記アルキル基及びアリールアルキル基中のアルキレン部分は、不飽和結合、−Ｏ−又は−Ｓ−で中断されていてもよく、Ｚは、隣接するＺ同士で環を形成していてもよく、ｍは０〜１０の整数を表し、ｐは０〜４の整数を表し、ｑは０〜８の整数を表し、ｒは０〜４の整数を表し、ｓは０〜４の整数を表し、ｒとｓの数の合計は２〜４の整数である。）

Wherein R ¹ , R ² , R ³ and R ⁴ are each independently a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or 2 to 5 carbon atoms. Y and Z are each independently an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, an arylalkyl group having 7 to 30 carbon atoms, Represents a heterocyclic group having 2 to 20 carbon atoms, or a halogen atom, and the alkylene moiety in the alkyl group and arylalkyl group may be interrupted by an unsaturated bond, -O- or -S-, May form a ring with adjacent Zs, m represents an integer of 0 to 10, p represents an integer of 0 to 4, q represents an integer of 0 to 8, and r represents 0 to 0. 4 represents an integer of 4, s represents an integer of 0 to 4, and the total number of r and s is 2 to 4. Is an integer.)

  Moreover, this invention provides the color filter using the said photocurable composition.

  According to the present invention, a photocurable composition containing a photopolymerizable unsaturated compound having a specific structure is excellent in sensitivity and heat resistance. The cured product is suitable for a color filter for display devices, a liquid crystal display panel, and an organic EL display panel.

  Hereinafter, the photocurable composition of the present invention will be described based on preferred embodiments.

  The photocurable composition of the present invention is an esterification reaction between an epoxy addition compound having a structure in which an unsaturated monobasic acid is added to the epoxy compound represented by the general formula (I) and a polybasic acid anhydride. Containing a photopolymerizable unsaturated compound (A) having a structure which is a reaction product obtained by the above, a polyfunctional thiol compound (B), a photopolymerization initiator (C) and a colorant (D). Hereinafter, each component will be described in order.

<Photopolymerizable unsaturated compound (A)>
The photopolymerizable unsaturated compound (A) used in the photocurable composition of the present invention includes an epoxy addition compound having a structure in which an unsaturated monobasic acid is added to the epoxy compound represented by the general formula (I). And a structure which is a reaction product obtained by an esterification reaction with a polybasic acid anhydride.

In the general formula (I), R ^1, R ^2, R ³ and an alkyl group having 1 to 5 carbon atoms represented by R ^4, methyl, ethyl, propyl, iso- propyl, butyl, sec- butyl Tert-butyl, iso-butyl, amyl, iso-amyl, tert-amyl and the like,
The R ^1, R ^2, R ³ and alkoxy group having 1 to 8 carbon atoms represented by R ^4, methyloxy, ethyloxy, iso- propyloxy, propyloxy, butyloxy, pentyloxy, iso- pentyloxy, Hexyloxy, heptyloxy, octyloxy, 2-ethylhexyloxy, etc.
Examples of the alkenyl group having 2 to 5 carbon atoms represented by R ¹ , R ² , R ³ and R ⁴ include vinyl, allyl, butenyl, propenyl,
Examples of the halogen atom represented by R ¹ , R ² , R ³ and R ⁴ include a fluorine atom, a chlorine atom, a bromine atom and an iodine atom.

In the general formula (I), examples of the alkyl group having 1 to 20 carbon atoms represented by Y and Z include hexyl, heptyl, isoheptyl other than those exemplified for the above R ¹ , R ² , R ³ and R ^4. , T-heptyl, n-octyl, isooctyl, t-octyl, 2-ethylhexyl, n-nonyl, n-decyl, trifluoromethyl, difluoromethyl, monofluoromethyl, pentafluoroethyl, tetrafluoroethyl, trifluoroethyl, Difluoroethyl, heptafluoropropyl, hexafluoropropyl, pentafluoropropyl, tetrafluoropropyl, trifluoropropyl, perfluorobutyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclononyl, cyclodecyl, etc. And
Examples of the aryl group having 6 to 30 carbon atoms represented by Y and Z include phenyl, naphthyl, anthracen-1-yl, phenanthren-1-yl, o-tolyl, m-tolyl, p-tolyl, and 4-vinyl. Phenyl, 3-isopropylphenyl, 4-isopropylphenyl, 4-butylphenyl, 4-isobutylphenyl, 4-t-butylphenyl, 4-hexylphenyl, 4-cyclohexylphenyl, 4-octylphenyl, 4- (2-ethylhexyl) ) Phenyl, 2,3-dimethylphenyl, 2,4-dimethylphenyl, 2,5-dimethylphenyl, 2,6-dimethylphenyl, 3,4-dimethylphenyl, 3,5-dimethylphenyl, 2,4-di -T-butylphenyl, 2,5-di-t-butylphenyl, 2,6-di-t-butylphenyl, 2 4-di-t-pentylphenyl, 2,5-di-t-amylphenyl, cyclohexylphenyl, biphenyl, 2,4,5-trimethylphenyl, 4-chlorophenyl, 3,4-dichlorophenyl, 4-trichlorophenyl, 4 -Trifluorophenyl, perfluorophenyl and the like,
Examples of the arylalkyl group having 7 to 30 carbon atoms represented by Y and Z include benzyl, phenethyl, 2-phenylpropyl, diphenylmethyl, triphenylmethyl, styryl, cinnamyl, 4-chlorophenylmethyl, and the like.
Examples of the heterocyclic group represented by Y and Z include pyrrolyl, pyridyl, pyrimidyl, pyridazyl, piperazyl, piperidyl, pyranyl, pyrazolyl, triazyl, pyrrolidyl, quinolyl, isoquinolyl, imidazolyl, benzimidazolyl, triazolyl, furyl, furanyl, benzofuranyl, thienyl. , Thiophenyl, benzothiophenyl, thiadiazolyl, thiazolyl, benzothiazolyl, oxazolyl, benzoxazolyl, isothiazolyl, isoxazolyl, indolyl, eurolidyl, morpholinyl, thiomorpholinyl, 2-pyrrolidinon-1-yl, 2-piperidone-1-yl 2,4-dioxyimidazolidin-3-yl, 2,4-dioxyoxazolidine-3-yl and the like.

  Among the epoxy compounds represented by the general formula (I), a compound in which the sum of r and s is an integer of 2 or 3 is preferable from the viewpoint of further enhancing the effects of the present invention, and the sum of r and s is 2. A certain compound is more preferable, and a compound in which r is 0 and s is 2 is particularly preferable.

The unsaturated monobasic acid that acts on the epoxy group of the epoxy compound includes acrylic acid, methacrylic acid, crotonic acid, cinnamic acid, sorbic acid, hydroxyethyl methacrylate / malate, hydroxyethyl acrylate / malate, hydroxypropyl methacrylate / malate. , Hydroxypropyl acrylate malate, dicyclopentadiene malate and the like.
In addition, the polybasic acid anhydride to be esterified after adding the unsaturated monobasic acid includes biphenyltetracarboxylic dianhydride, tetrahydrophthalic anhydride, succinic anhydride, maleic anhydride, trimellitic acid Anhydride, pyromellitic anhydride, 2,2'-3,
3'-benzophenone tetracarboxylic acid anhydride, ethylene glycol bisanhydro trimellitate, glycerol tris anhydro trimellitate, hexahydro phthalic anhydride, methyl tetrahydro phthalic anhydride, nadic acid anhydride, methyl nadic acid anhydride, tri Alkyltetrahydrophthalic anhydride, hexahydrophthalic anhydride, 5- (2,5-dioxotetrahydrofuryl) -3-methyl-3-cyclohexene-1,2-dicarboxylic anhydride, trialkyltetrahydrophthalic anhydride-maleic anhydride Examples include acid adducts, dodecenyl succinic anhydride, and methyl hymic anhydride.

The reaction molar ratio of the epoxy compound, the unsaturated monobasic acid and the polybasic acid anhydride is preferably as follows.
That is, in the epoxy adduct having a structure in which 0.1 to 1.0 carboxyl groups of the unsaturated monobasic acid are added to one epoxy group of the epoxy compound, the hydroxyl group of the epoxy adduct is 1 It is preferable that the acid anhydride structure of the polybasic acid anhydride has a ratio of 0.1 to 1.0.
Reaction of the said epoxy compound, the said unsaturated monobasic acid, and the said polybasic acid anhydride can be performed in accordance with a conventional method.

  From the viewpoint of further enhancing the effects of the present invention, the number average molecular weight Mn of the photopolymerizable unsaturated compound (A) is preferably 300 to 5000, and more preferably 500 to 2500. Moreover, it is preferable that it is 20-100 mgKOH / g, and, as for the acid value of the solid content of the said photopolymerizable unsaturated compound (A), it is more preferable that it is 40-100 mgKOH / g.

  In the photocurable composition of the present invention, the content of the photopolymerizable unsaturated compound (A) is 5 to 80% by mass, particularly 10 to 40% by mass, in the solid content of the photocurable composition of the present invention. It is preferable that If the content of the photopolymerizable unsaturated compound is less than 5% by mass, curing failure may occur. If the content of the photopolymerizable unsaturated compound is greater than 80% by mass, sufficient light shielding properties cannot be obtained. There is a case.

<Polyfunctional thiol compound (B)>
As the polyfunctional thiol compound (B) used in the photocurable composition of the present invention, a conventionally known compound can be used. In particular, the compound represented by the following general formula (II) is a heat-resistant compound. It is preferable from the point.

（式中、Ｑは、炭素原子数１〜１０のアルキレン基であり、
ｎは、２〜６の整数を表し、
Ｘ¹は、ｎと同数の価数を有する炭素原子数１〜２０の飽和炭化水素基を表す。）

(In the formula, Q is an alkylene group having 1 to 10 carbon atoms,
n represents an integer of 2 to 6,
X ¹ represents a saturated hydrocarbon group having 1 to 20 carbon atoms having the same valence as n. )

In the general formula (II), as the saturated hydrocarbon group having 1 to 20 carbon atoms represented by X ¹ ,
What was illustrated as said C1-C20 alkyl group in description of the said general formula (I) is mentioned,
Examples of the alkylene group having 1 to 10 carbon atoms represented by Q include methylene, ethylene, propylene, methylethylene, butylene, 1-methylpropylene, 2-methylpropylene, 1,2-dimethylpropylene, and 1,3-methyl. Propylene, 1-methylbutylene, 2-methylbutylene, 3-methylbutylene, 2,4-dimethylbutylene, 1,3-dimethylbutylene, pentylene, hexylene, heptylene, octylene, ethane-1,1-diyl, propane- 2,2-diyl and the like can be mentioned.

  In the general formula (II), n is preferably 2 or 4, from the viewpoint of heat resistance. From the viewpoint of sensitivity, n is preferably 3 or more, particularly 4 or more.

  Examples of the compound represented by the general formula (II) include 1,4-bis (3-mercaptobutyryloxy) butane, ethylene glycol bis (3-mercaptobutyrate), diethylene glycol bis (3-mercaptobutyrate). ), Butanediol bis (3-mercaptobutyrate), octanediol bis (3-mercaptobutyrate), nonanediol bis (3-mercaptobutyrate), pentaerythritol tetrakis (3-mercaptobutyrate), dipentaerythritol hexa Kiss (3-mercaptobutyrate), ethylene glycol bis (2-mercaptopropionate), diethylene glycol bis (2-mercaptopropionate), butanediol bis (2-mercaptopropionate), octanediol bis (2 Mercaptopropionate), nonanediol bis (2-mercaptopropionate), pentaerythritol tetrakis (2-mercaptopropionate), dipentaerythritol hexakis (2-mercaptopropionate), ethylene glycol bis (3- Mercaptoisobutyrate), diethylene glycol bis (3-mercaptoisobutyrate), butanediol bis (3-mercaptoisobutyrate), octanediol bis (3-mercaptoisobutyrate), nonanediol bis (3-mercaptoisobutyrate) Rate), dipentaerythritol hexakis (3-mercaptoisobutyrate), ethylene glycol bis (2-mercaptoisobutyrate), diethylene glycol bis (2-mercaptoisobutyrate), pig Diol bis (2-mercaptoisobutyrate), octanediol bis (2-mercaptoisobutyrate), nonanediol bis (2-mercaptoisobutyrate), pentaerythritol tetrakis (2-mercaptoisobutyrate), dipentaerythritol hexa Kiss (2-mercaptoisobutyrate), ethylene glycol bis (4-mercaptovalerate), diethylene glycol bis (4-mercaptovalerate), butanediol bis (4-mercaptovalerate), octanediol bis (4-mercaptovale) Rate), nonanediol bis (4-mercaptovalerate), pentaerythritol tetrakis (4-mercaptovalerate), dipentaerythritol hexakis (4-mercaptovalerate), ethylene Recall bis (3-mercaptovalerate), diethylene glycol bis (3-mercaptovalerate), butanediol bis (3-mercaptovalerate), octanediol bis (3-mercaptovalerate), nonanediol bis (3-mercaptovalerate) Rate), pentaerythritol tetrakis (3-mercaptovalerate), dipentaerythritol hexakis (3-mercaptovalerate) and the like.

  As the polyfunctional thiol compound (B), in addition to the compound represented by the above general formula (II), 2- (N, N-dibutylamino) -4,6-dimercapto-s-triazine, 2,5-hexane Dithiol, 2,9-decanedithiol, 1,4-bis (1-mercaptoethyl) benzene and the like can also be used.

  In the photocurable composition of the present invention, the content of the polyfunctional thiol compound (B) is 0.05 to 5% by mass, particularly 0.5 to 5% by mass in the photocurable composition of the present invention. preferable. When the content of the polyfunctional thiol compound is less than 0.05% by mass, curing by exposure may be insufficient. When the content is greater than 5% by mass, the photopolymerizable unsaturated compound reacts with the polyfunctional thiol compound. In some cases, it becomes easy to gel and the storage stability is poor and gelation occurs.

<Photopolymerization initiator (C)>
As the photopolymerization initiator (C) used in the photocurable composition of the present invention, conventionally known compounds can be used. For example, benzophenone, phenylbiphenyl ketone, 1-hydroxy-1-benzoylcyclohexane, 4-benzoyl-4′-methyldiphenyl sulfide, benzoin butyl ether, 2-hydroxy-2-benzoylpropane, 2-hydroxy-2- (4′-isopropyl) benzoylpropane, 4-butylbenzoyltrichloromethane, 4-phenoxybenzoyldichloromethane , Methyl benzoylformate, benzoin, 2-morpholyl-2- (4′-methylmercapto) benzoylpropane, 2
Alkylphenone compounds such as 1,2-dimethoxy-1,2-diphenylethane-1-one, 1-benzyl-1-dimethylamino-1- (4′-morpholinobenzoyl) propane;
1,2-octanedione, 1- [4- (phenylthio)-, 2- (O-benzoyloxime)], ethanone, 1- [9-ethyl-6- (2-methylbenzoyl) -9H-carbazole-3 Oxime ester compounds such as -yl]-, 1- (O-acetyloxime); thioxanthone compounds such as thioxanthone, 1-chloro-4-propoxythioxanthone, isopropylthioxanthone, diethylthioxanthone; anthraquinone compounds such as ethyl anthraquinone; 2,2 -Biimidazole compounds such as bis (2-chlorophenyl) -4,5,4 ', 5'-tetraphenyl-1-2'-biimidazole; 2-methyl-4,6-bis (trichloromethyl) -s- Triazine, 2-phenyl-4,6-bis (trichloromethyl) -s-triazine, 2-naphthyl Triazine compounds such as -4,6-bis (trichloromethyl) -s-triazine; azo compounds such as 4,4-azobisisobutyronitrile; peroxides such as benzoyl peroxide; 1,7-bis (9 '-Acridinyl) heptane, 9-n-butyl-3,6-bis (2'-morpholinoisobutyroyl) carbazole, triphenylphosphine, camphorquinone, and the like, and commercially available products include N-1414, N- 1717, N-1919, PZ-808, NCI-831, NCI-930 (manufactured by ADEKA), IRGACURE184, IRGACURE369, IRGACURE651, IRGACURE907, IRGACURE OX01, IRGACURE OXE 02 (BASF) Is mentioned.

  Especially as a photoinitiator used for the photocurable composition of this invention, the compound represented with the following general formula (III) is preferable from the point of a sensitivity and heat resistance.

（式中、Ｒ⁶及びＲ⁷は、それぞれ独立に、水素原子、シアノ基、炭素原子数１〜２０のアルキル基、炭素原子数６〜３０のアリール基、炭素原子数７〜３０のアリールアルキル基又は炭素原子数２〜２０の複素環基を表し、
Ｒ⁸びＲ⁹は、それぞれ独立に、水素原子、ハロゲン原子、ニトロ基、シアノ基、水酸基、カルボキシル基、Ｒ¹⁰、ＯＲ¹¹、ＳＲ¹²、ＮＲ¹³Ｒ¹⁴、ＣＯＲ¹⁵、ＳＯＲ¹⁶、ＳＯ₂Ｒ¹⁷又はＣＯＮＲ¹⁸Ｒ¹⁹を表し、Ｒ⁸及びＲ⁹は、互いに結合して環を形成していてもよく、
Ｒ¹⁰、Ｒ¹¹、Ｒ¹²、Ｒ¹³、Ｒ¹⁴、Ｒ¹⁵、Ｒ¹⁶、Ｒ¹⁷、Ｒ¹⁸及びＲ¹⁹は、それぞれ独立に、炭素原子数１〜２０のアルキル基、炭素原子数６〜３０のアリール基、炭素原子数７〜３０のアリールアルキル基又は炭素原子数２〜２０の複素環基を表し、
Ｘ²は、酸素原子、硫黄原子、セレン原子、ＣＲ²⁰Ｒ²¹、ＣＯ、ＮＲ²²又はＰＲ²³を表
し、
Ｘ³は、単結合又はＣＯを表し、
Ｒ²⁰、Ｒ²¹、Ｒ²²及びＲ²³は、それぞれ独立に、水素原子、炭素原子数１〜２０のアルキル基、炭素原子数６〜３０のアリール基又は炭素原子数７〜３０のアリールアルキル基を表し、前記アルキル基又はアリールアルキル基中のメチレン基は、ハロゲン原子、ニトロ基、シアノ基、水酸基、カルボキシル基又は複素環基で置換されていてもよく、−Ｏ−で中断されていてもよく、
Ｒ²⁰、Ｒ²¹、Ｒ²²及びＲ²³は、それぞれ独立に、隣接するどちらかのベンゼン環と一緒になって環を形成していてもよく、
ａは、０〜４の整数を表し、
ｂは、０〜５の整数を表す。）

Wherein R ⁶ and R ⁷ are each independently a hydrogen atom, a cyano group, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, or an arylalkyl having 7 to 30 carbon atoms. Represents a group or a heterocyclic group having 2 to 20 carbon atoms,
R ^{8 and} R ⁹ are each independently a hydrogen atom, a halogen atom, a nitro group, a cyano group, a hydroxyl group, a carboxyl group, R ¹⁰ , OR ¹¹ , SR ¹² , NR ¹³ R ¹⁴ , COR ¹⁵ , SOR ¹⁶ , SO _2. R ¹⁷ or CONR ¹⁸ R ¹⁹ , R ⁸ and R ⁹ may be bonded to each other to form a ring;
R ¹⁰ , R ¹¹ , R ¹² , R ¹³ , R ¹⁴ , R ¹⁵ , R ¹⁶ , R ¹⁷ , R ¹⁸ and R ¹⁹ are each independently an alkyl group having 1 to 20 carbon atoms or 6 to 6 carbon atoms. A 30 aryl group, an arylalkyl group having 7 to 30 carbon atoms, or a heterocyclic group having 2 to 20 carbon atoms;
X ² represents an oxygen atom, a sulfur atom, a selenium atom, CR ²⁰ R ²¹ , CO, NR ²² or PR ²³ ,
X ³ represents a single bond or CO,
R ²⁰ , R ²¹ , R ²² and R ²³ are each independently a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms or an arylalkyl group having 7 to 30 carbon atoms. The methylene group in the alkyl group or arylalkyl group may be substituted with a halogen atom, a nitro group, a cyano group, a hydroxyl group, a carboxyl group or a heterocyclic group, or may be interrupted with -O-. Often,
R ²⁰ , R ²¹ , R ²² and R ²³ may each independently form a ring together with one of the adjacent benzene rings,
a represents an integer of 0 to 4,
b represents an integer of 0 to 5. )

  In the photocurable composition of the present invention, the content of the photopolymerization initiator is 0.1 to 30% by mass, particularly 0.5 to 10% by mass in the solid content of the photocurable composition of the present invention. preferable. When the content of the photopolymerization initiator is less than 0.1% by mass, curing by exposure may be insufficient, and when it is greater than 30% by mass, the initiator may be precipitated in the resin composition. .

<Colorant (D)>
As the colorant (D) used in the photocurable composition of the present invention, an inorganic color material or an organic color material can be used, and these can be used alone or in admixture of two or more.
Examples of the inorganic color material or organic color material include nitroso compounds, nitro compounds, azo compounds, diazo compounds, xanthene compounds, quinoline compounds, anthraquinone compounds, coumarin compounds, phthalocyanine compounds, isoindolinone compounds, isoindoline compounds, and quinacridones. Compound, anthanthrone compound, perinone compound, perylene compound, diketopyrrolopyrrole compound, thioindigo compound, dioxazine compound, triphenylmethane compound, quinophthalone compound, naphthalenetetracarboxylic acid; azo dye, metal complex compound of cyanine dye; lake pigment; Carbon black obtained by the method, channel method, thermal method, or carbon black such as acetylene black, ketjen black or lamp black; -Bon black adjusted with epoxy resin, coated, carbon black previously dispersed with resin in solvent, 20-200 mg / g resin adsorbed, carbon black treated with acidic or alkaline surface, An average particle size of 8 nm or more and a DBP oil absorption of 90 ml / 100 g or less, and a total oxygen amount calculated from CO and CO ₂ in volatile components at 950 ° C. of 9 mg or more per 100 m ^{2 of} carbon black surface area; Graphite, graphitized carbon black, activated carbon, carbon fiber, carbon nanotube, carbon microcoil, carbon nanohorn, carbon aerogel, fullerene; aniline black, pigment black 7, titanium black; synthetic iron black; hydrophobic resin, chromium oxide green, miloli blue Cobalt green, cobalt , Manganese-based, ferrocyanide, phosphate ultramarine, bitumen, ultramarine, cerulean blue, pyridian, emerald green, lead sulfate, yellow lead, zinc yellow, red rose (red iron (III) oxide), cadmium red, amber, etc. Inorganic pigments or organic pigments can be used.

  As the inorganic color material or organic color material, commercially available pigments can also be used. For example, Pigment Red 1, 2, 3, 9, 10, 14, 17, 22, 23, 31, 38, 41, 48, 49, 88, 90, 97, 112, 119, 122, 123, 144, 149, 166, 168, 169, 170, 171, 177, 179, 180, 184, 185, 192, 200, 202, 209, 215, 216, 217, 220, 223, 224, 226, 227, 228, 240, 254; Pigment Orange 13, 31, 34, 36, 38, 43, 46, 48, 49, 51, 52, 55, 59, 60, 61, 62, 64, 65, 71; Pigment Yellow 1, 3, 12, 13, 14, 16, 17, 20, 24, 55, 60, 73, 81, 83, 86, 3, 95, 97, 98, 100, 109, 110, 113, 114, 117, 120, 125, 126, 127, 129, 137, 138, 139, 147, 148, 150, 151, 152, 153, 154, 166, 168, 175, 180, 185; Pigment Green 7, 10, 36; Pigment Blue 15, 15: 1, 15: 2, 15: 3, 15: 4, 15: 5, 15: 6, 22, 24, 56, 60, 61, 62, 64; pigment violet 1, 19, 23, 27, 29, 30, 32, 37, 40, 50, and the like.

  As the inorganic color material or organic color material, known dyes can be used. Known dyes include, for example, azo dyes, anthraquinone dyes, indigoid dyes, triarylmethane dyes, xanthene dyes, alizarin dyes, acridine dyes stilbene dyes, thiazole dyes, naphthol dyes, quinoline dyes, nitro dyes, indamine dyes, oxazine dyes, Examples thereof include phthalocyanine dyes and cyanine dyes.

  In the photocurable composition of the present invention, the content of the colorant (D) is preferably based on 100 parts by mass of the entire polymerizable compound having an ethylenically unsaturated bond including the photopolymerizable unsaturated compound. Is 0 to 350 parts by mass, more preferably 0 to 300 parts by mass, and still more preferably 0 to 250 parts by mass. When it exceeds 350 parts by mass, the colorant tends to aggregate and storage stability is deteriorated.

  In the photocurable composition of the present invention, a polymerizable compound having an ethylenically unsaturated bond other than the photopolymerizable unsaturated compound (A) can be further used. The polymerizable compound having an ethylenically unsaturated bond is not particularly limited, and those conventionally used in photosensitive compositions can be used. For example, ethylene, propylene, butylene, isobutylene, vinyl chloride can be used. , Unsaturated aliphatic hydrocarbons such as vinylidene chloride, vinylidene fluoride, tetrafluoroethylene; (meth) acrylic acid, α-chloroacrylic acid, itaconic acid, maleic acid, citraconic acid, fumaric acid, hymic acid, crotonic acid, Isocrotonic acid, vinyl acetate, allyl acetate, cinnamic acid, sorbic acid, mesaconic acid, succinic acid mono [2- (meth) acryloyloxyethyl], phthalic acid mono [2- (meth) acryloyloxyethyl], ω- A carboxypolycaprolactone mono (meth) acrylate, etc. having a carboxy group and a hydroxyl group at both ends Mer mono (meth) acrylates; having hydroxyethyl (meth) acrylate malate, hydroxypropyl (meth) acrylate malate, dicyclopentadiene malate or one carboxyl group and two or more (meth) acryloyl groups Unsaturated monobasic acids such as polyfunctional (meth) acrylates; 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, glycidyl (meth) acrylate, the following compound No. A1-No. A4, methyl (meth) acrylate, butyl (meth) acrylate, isobutyl (meth) acrylate, tert-butyl (meth) acrylate, cyclohexyl (meth) acrylate, n-octyl (meth) acrylate, ( Isooctyl (meth) acrylate, isononyl (meth) acrylate, stearyl (meth) acrylate, lauryl (meth) acrylate, methoxyethyl (meth) acrylate, dimethylaminomethyl (meth) acrylate, dimethyl (meth) acrylate Aminoethyl, aminopropyl (meth) acrylate, dimethylaminopropyl (meth) acrylate, ethoxyethyl (meth) acrylate, poly (ethoxy) ethyl (meth) acrylate, butoxyethoxyethyl (meth) acrylate, (meta ) Ethylhexyl acrylate, (meth) acrylic acid Enoxyethyl, tetrahydrofuryl (meth) acrylate, vinyl (meth) acrylate, allyl (meth) acrylate, benzyl (meth) acrylate, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (Meth) acrylate, polyethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, trimethylolethanetri ( (Meth) acrylate, trimethylolpropane tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, dipentaerythritol penta (meth) acrylate, pentaerythritol Unsaturated monobasic acids such as tra (meth) acrylate, pentaerythritol tri (meth) acrylate, tricyclodecane dimethylol di (meth) acrylate, tri [(meth) acryloylethyl] isocyanurate, polyester (meth) acrylate oligomers and the like Esters of polyhydric alcohols or polyphenols; metal salts of unsaturated polybasic acids such as zinc (meth) acrylate and magnesium (meth) acrylate; maleic anhydride, itaconic anhydride, citraconic anhydride, methyl Tetrahydrophthalic anhydride, tetrahydrophthalic anhydride, trialkyltetrahydrophthalic anhydride, 5- (2,5-dioxotetrahydrofuryl) -3-methyl-3-cyclohexene-1,2-dicarboxylic anhydride, trialkyltetrahydro Phthalic anhydride-anhydrous Acid anhydrides of unsaturated polybasic acids such as rain acid adducts, dodecenyl succinic anhydride, methyl hymic anhydride; (meth) acrylamide, methylene bis- (meth) acrylamide, diethylenetriamine tris (meth) acrylamide, xylylene bis (meth) Unsaturated monobasic acids such as acrylamide, α-chloroacrylamide, N-2-hydroxyethyl (meth) acrylamide and amides of polyvalent amines; unsaturated aldehydes such as acrolein; (meth) acrylonitrile, α-chloroacrylonitrile, cyanide Unsaturated nitriles such as vinylidene and allyl cyanide; styrene, 4-methylstyrene, 4-ethylstyrene, 4-methoxystyrene, 4-hydroxystyrene, 4-chlorostyrene, divinylbenzene, vinyl toluene, vinyl benzoic acid, vinyl Unsaturated aromatic compounds such as ruphenol, vinyl sulfonic acid, 4-vinylbenzene sulfonic acid, vinyl benzyl methyl ether, vinyl benzyl glycidyl ether; unsaturated ketones such as methyl vinyl ketone; vinyl amine, allyl amine, N-vinyl pyrrolidone, vinyl Unsaturated amine compounds such as piperidine; vinyl alcohols such as allyl alcohol and crotyl alcohol; vinyl ethers such as vinyl methyl ether, vinyl ethyl ether, n-butyl vinyl ether, isobutyl vinyl ether, allyl glycidyl ether; maleimide, N-phenylmaleimide, N -Unsaturated imides such as cyclohexylmaleimide; Indenes such as indene and 1-methylindene; Aliphatic conjugated dienes such as 1,3-butadiene, isoprene and chloroprene Macromonomers having a mono (meth) acryloyl group at the end of the polymer molecular chain such as polystyrene, polymethyl (meth) acrylate, poly-n-butyl (meth) acrylate, polysiloxane, etc .; vinyl chloride, vinylidene chloride, divinyl succi Narate, diallyl phthalate, triallyl phosphate, triallyl isocyanurate, vinyl thioether, vinyl imidazole, vinyl oxazoline, vinyl carbazole, vinyl pyrrolidone, vinyl pyridine, hydroxyl group-containing vinyl monomer and polyisocyanate compound vinyl urethane compound, hydroxyl group content The vinyl epoxy compound of a vinyl monomer and a polyepoxy compound is mentioned.

  In addition, as the polymerizable compound having an ethylenically unsaturated bond, an acrylic ester copolymer, a phenol and / or cresol novolac epoxy resin, or a polyphenylmethane type epoxy resin having a polyfunctional epoxy group may be used. it can.

Among the polymerizable compounds having an ethylenically unsaturated bond, when a compound having an acid value is used, alkali developability can be imparted to the photocurable composition of the present invention. When using the compound which has the said acid value, it is preferable to make the usage-amount become 50-99 mass% of the whole polymeric compound which has the said ethylenically unsaturated bond.
The compound having an acid value can be used after adjusting the acid value by further reacting with a monofunctional or polyfunctional epoxy compound. The alkali developability of the photosensitive resin can be improved by adjusting the acid value of the compound having an acid value. The compound having an acid value (that is, a polymerizable compound having an ethylenically unsaturated bond imparting alkali developability) preferably has a solid content acid value in the range of 5 to 120 mgKOH / g, and is monofunctional or polyfunctional. The amount of the functional epoxy compound used is preferably selected so as to satisfy the acid value.

Examples of the monofunctional epoxy compound include glycidyl methacrylate, methyl glycidyl ether, ethyl glycidyl ether, propyl glycidyl ether, isopropyl glycidyl ether, butyl glycidyl ether, isobutyl glycidyl ether, t-butyl glycidyl ether, pentyl glycidyl ether, hexyl glycidyl ether, heptyl. Glycidyl ether, octyl glycidyl ether, nonyl glycidyl ether, decyl glycidyl ether, undecyl glycidyl ether, dodecyl glycidyl ether, tridecyl glycidyl ether, tetradecyl glycidyl ether, pentadecyl glycidyl ether, hexadecyl glycidyl ether, 2-ethylhexyl glycidyl ether, Allyl glycidylate , Propargyl glycidyl ether, p-methoxyethyl glycidyl ether, phenyl glycidyl ether, p-methoxy glycidyl ether, p-butylphenol glycidyl ether, cresyl glycidyl ether, 2-methyl cresyl glycidyl ether, 4-nonylphenyl glycidyl ether, benzyl glycidyl Ether, p-cumylphenyl glycidyl ether, trityl glycidyl ether, 2,3-epoxypropyl methacrylate, epoxidized soybean oil, epoxidized linseed oil, glycidyl butyrate, vinylcyclohexane monooxide, 1,2-epoxy-4-vinyl Cyclohexane, styrene oxide, pinene oxide, methyl styrene oxide, cyclohexene oxide, propylene oxide, the above-mentioned compound no. A2, No. A3 etc. are mentioned.

As the polyfunctional epoxy compound, it is preferable to use one or more compounds selected from the group consisting of bisphenol-type epoxy compounds and glycidyl ethers because a photocurable composition with better characteristics can be obtained.
As the bisphenol type epoxy compound, an epoxy compound represented by the above general formula (I) can be used, and for example, a bisphenol type epoxy compound such as a hydrogenated bisphenol type epoxy compound can also be used.
Examples of the glycidyl ethers include ethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, 1,4-butanediol diglycidyl ether, 1,6-hexanediol diglycidyl ether, 1,8-octanediol diglycidyl ether, 1,10-decanediol diglycidyl ether, 2,2-dimethyl-1,3-propanediol diglycidyl ether, diethylene glycol diglycidyl ether, triethylene glycol diglycidyl ether, tetraethylene glycol diglycidyl ether, hexaethylene glycol diglycidyl Ether, 1,4-cyclohexanedimethanol diglycidyl ether, 1,1,1-tri (glycidyloxymethyl) propane, 1,1,1-to (Glycidyloxymethyl) ethane, 1,1,1-tri (glycidyloxymethyl) methane, 1,1,1,1- tetra (glycidyloxymethyl) can be used such as methane.
Other novolac epoxy compounds such as phenol novolac epoxy compounds, biphenyl novolac epoxy compounds, cresol novolac epoxy compounds, bisphenol A novolac epoxy compounds, dicyclopentadiene novolac epoxy compounds; 3,4-epoxy-6-methyl Cycloaliphatic epoxies such as cyclohexylmethyl-3,4-epoxy-6-methylcyclohexanecarboxylate, 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate, 1-epoxyethyl-3,4-epoxycyclohexane Compound: Glycidyl esters such as diglycidyl phthalate, diglycidyl tetrahydrophthalate, glycidyl dimer, tetraglycidyl diamino Glycidylamines such as phenylmethane, triglycidyl P-aminophenol and N, N-diglycidylaniline; heterocyclic epoxy compounds such as 1,3-diglycidyl-5,5-dimethylhydantoin and triglycidyl isocyanurate; Dioxide compounds such as pentadiene dioxide; naphthalene type epoxy compounds; triphenylmethane type epoxy compounds; dicyclopentadiene type epoxy compounds can also be used.

  In addition, the photocurable composition of the present invention may contain a compound that does not have an ethylenically unsaturated bond and imparts alkali developability. The compound is not particularly limited as long as it is a compound that is soluble in an aqueous solution, but a typical example is an alkali-soluble novolak resin (hereinafter simply referred to as “novolak resin”). The novolak resin is obtained by polycondensation of phenols and aldehydes in the presence of an acid catalyst.

  Examples of the phenols include phenol, o-cresol, m-cresol, p-cresol, o-ethylphenol, m-ethylphenol, p-ethylphenol, o-butylphenol, m-butylphenol, p-butylphenol, 2, 3-xylenol, 2,4-xylenol, 2,5-xylenol, 3,4-xylenol, 3,5-xylenol, 2,3,5-trimethylphenol, p-phenylphenol, hydroquinone, catechol, resorcinol, 2- Methyl resorcinol, pyrogallol, α-naphthol, bisphenol A, dihydroxybenzoic acid ester, gallic acid ester and the like are used. Among these phenols, phenol, o-cresol, m-cresol, p-cresol, 2,5-xy Nord, 3,5-xylenol, 2,3,5-trimethylphenol, resorcinol, 2-methyl resorcinol and bisphenol A are preferred. These phenols are used alone or in combination of two or more.

  Examples of the aldehydes include formaldehyde, paraformaldehyde, acetaldehyde, propylaldehyde, benzaldehyde, phenylacetaldehyde, α-phenylpropylaldehyde, β-phenylpropylaldehyde, o-hydroxybenzaldehyde, m-hydroxybenzaldehyde, p-hydroxybenzaldehyde, o -Chlorobenzaldehyde, m-chlorobenzaldehyde, p-chlorobenzaldehyde, o-nitrobenzaldehyde, m-nitrobenzaldehyde, p-nitrobenzaldehyde, o-methylbenzaldehyde, m-methylbenzaldehyde, p-methylbenzaldehyde, p-ethylbenzaldehyde, p N-butylbenzaldehyde and the like are used, and among these compounds, formal Dehydr, acetaldehyde and benzaldehyde are preferred. These aldehydes may be used alone or in combination of two or more. Aldehydes are preferably used in a proportion of 0.7 to 3 mol, particularly preferably 0.7 to 2 mol, per mol of phenol.

Examples of the acid catalyst include inorganic acids such as hydrochloric acid, nitric acid, and sulfuric acid, or organic acids such as formic acid, oxalic acid, and acetic acid. The amount of these acid catalysts used is preferably 1 × 10 ^{−4 to} 5 × 10 ⁻¹ mol per mol of phenols. In the condensation reaction, water is usually used as a reaction medium. However, if the phenols used in the condensation reaction do not dissolve in an aqueous solution of aldehydes and become heterogeneous from the beginning of the reaction, the reaction medium is hydrophilic. A solvent can also be used. Examples of these hydrophilic solvents include alcohols such as methanol, ethanol, propanol and butanol, and cyclic ethers such as tetrahydrofuran and dioxane. The amount of these reaction media used is usually 20 to 1000 parts by mass per 100 parts by mass of the reaction raw material. Although the reaction temperature of a condensation reaction can be suitably adjusted according to the reactivity of a reaction raw material, it is 10-200 degreeC normally, Preferably it is 70-150 degreeC. After completion of the condensation reaction, in order to remove unreacted raw materials, acid catalyst and reaction medium present in the system, the internal temperature is generally raised to 130 to 230 ° C., and the volatile component is distilled off under reduced pressure. Next, the melted novolac resin is collected on a steel belt or the like.
After completion of the condensation reaction, the reaction mixture is dissolved in the hydrophilic solvent and added to a precipitating agent such as water, n-hexane or n-heptane to precipitate a novolak resin, and the precipitate is separated and dried by heating. It can also be recovered by doing so.

  Examples other than the novolak resin include polyhydroxystyrene or a derivative thereof, styrene-maleic anhydride copolymer, polyvinylhydroxybenzoate, and the like.

  A solvent can be further added to the photocurable composition of the present invention. The solvent is usually the above-described components (the photopolymerizable unsaturated compound (A) of the present invention, the polyfunctional thiol compound (B), the photopolymerization initiator (C), the colorant (D) as necessary. Etc.) such as methyl ethyl ketone, methyl amyl ketone, diethyl ketone, acetone, methyl isopropyl ketone, methyl isobutyl ketone, cyclohexanone, 2-heptanone, etc .; ethyl ether, dioxane, tetrahydrofuran, 1, Ether solvents such as 2-dimethoxyethane, 1,2-diethoxyethane, and dipropylene glycol dimethyl ether; methyl acetate, ethyl acetate, acetic acid-n-propyl, isopropyl acetate, n-butyl acetate, cyclohexyl acetate, ethyl lactate, and aqua Ester solvents such as dimethyl acid and texanol; Cellosolve solvents such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether; alcohol solvents such as methanol, ethanol, iso- or n-propanol, iso- or n-butanol, amyl alcohol; ethylene glycol monomethyl acetate, ethylene glycol mono Ether ester solvents such as ethyl acetate, propylene glycol-1-monomethyl ether-2-acetate (PGMEA), dipropylene glycol monomethyl ether acetate, 3-methoxybutyl acetate, ethoxyethyl propionate; benzene, toluene, xylene, etc. BTX solvents; aliphatic hydrocarbon solvents such as hexane, heptane, octane and cyclohexane; terpene charcoal such as terpine oil, D-limonene and pinene Hydrogen oil; paraffinic solvents such as mineral spirit, Swazol # 310 (Cosmo Matsuyama Oil Co., Ltd.), Solvesso # 100 (Exxon Chemical Co., Ltd.); carbon tetrachloride, chloroform, trichloroethylene, methylene chloride, 1,2-dichloroethane Halogenated aliphatic hydrocarbon solvents such as chlorobenzene; Halogenated aromatic hydrocarbon solvents such as chlorobenzene; Carbitol solvents, aniline, triethylamine, pyridine, acetic acid, acetonitrile, carbon disulfide, N, N-dimethylformamide, N , N-dimethylacetamide, N-methylpyrrolidone, dimethyl sulfoxide, water and the like, and these solvents can be used as one or a mixture of two or more. Among these, ketones, ether ester solvents and the like, especially propylene glycol-1-monomethyl ether-2-acetate (PGMEA), cyclohexanone, and the like have good compatibility between the resist and the photopolymerization initiator in the photocurable composition. preferable.

  In the photocurable composition of the present invention, the amount of the solvent used is preferably such that the concentration of the composition other than the solvent is 5 to 30% by mass, and if it is less than 5% by mass, the film thickness may be increased. It is difficult and is not preferable because it cannot sufficiently absorb light of a desired wavelength. When it exceeds 30% by mass, the storage stability of the composition due to the precipitation of the composition is reduced, and the handling is reduced because the viscosity is improved. It is not preferable.

  The photocurable composition of the present invention can further contain an inorganic compound. Examples of the inorganic compound include metal oxides such as nickel oxide, iron oxide, iridium oxide, titanium oxide, zinc oxide, magnesium oxide, calcium oxide, potassium oxide, silica, and alumina; lamellar clay mineral, miloli blue, calcium carbonate, Magnesium carbonate, cobalt, manganese, glass powder, mica, talc, kaolin, ferrocyanide, various metal sulfates, sulfides, selenides, aluminum silicate, calcium silicate, aluminum hydroxide, platinum, gold, silver, copper Among these, titanium oxide, silica, layered clay mineral, silver and the like are preferable. In the photocurable composition of the present invention, the content of the inorganic compound is preferably 0.1 to 50 parts by mass, more preferably 0.5 to 20 parts by mass, with respect to 100 parts by mass of the photopolymerizable unsaturated compound. These inorganic compounds can be used alone or in combination of two or more.

By containing an inorganic compound in the photocurable composition of the present invention, it can be used as a photosensitive paste composition. The photosensitive paste composition is used to form a fired product pattern such as a partition pattern, a dielectric pattern, an electrode pattern, and a black matrix pattern of a plasma display panel.
These inorganic compounds are also suitably used as, for example, fillers, antireflection agents, conductive agents, stabilizers, flame retardants, mechanical strength improvers, special wavelength absorbers, ink repellent agents, and the like.

  In the photocurable composition of the present invention, when a pigment or an inorganic compound is used, a dispersant can be added. As the dispersant, any colorant or inorganic compound can be used as long as it can disperse and stabilize, and commercially available dispersants such as BYK series manufactured by BYK Chemie can be used, and polyester having a basic functional group, Polymer dispersant made of polyether, polyurethane, having a nitrogen atom as a basic functional group, the functional group having a nitrogen atom is an amine and / or a quaternary salt thereof, and an amine value of 1 to 100 mgKOH / g Those are preferably used.

  In addition, the photocurable composition of the present invention includes, if necessary, a thermal polymerization inhibitor such as p-anisole, hydroquinone, pyrocatechol, t-butylcatechol, phenothiazine; a plasticizer; an adhesion promoter; a filler; Conventional additives such as an antifoaming agent, a leveling agent, a surface conditioner, an antioxidant, an ultraviolet absorber, a dispersion aid, a coagulation inhibitor, a catalyst, an effect promoter, a crosslinking agent, and a thickener can be added. .

  In the photocurable composition of the present invention, optional components other than the photopolymerizable unsaturated compound (A), the polyfunctional thiol compound (B), the photopolymerization initiator (C), and the colorant (D) (however, ethylenic) The content of the polymerizable compound having an unsaturated bond (except for the polymerizable compound and the solvent) is appropriately selected depending on the purpose of use and is not particularly limited. However, preferably, the content of the photopolymerizable unsaturated compound is 100 parts by mass. And 50 parts by mass or less in total.

  In the photocurable composition of the present invention, a chain transfer agent, a sensitizer, a surfactant, melamine and the like can be further used in combination.

  As the chain transfer agent and sensitizer, a sulfur atom-containing compound is generally used. For example, thioglycolic acid, thiomalic acid, thiosalicylic acid, 2-mercaptopropionic acid, 3-mercaptopropionic acid, 3-mercaptobutyric acid, N- (2-mercaptopropionyl) glycine, 2-mercaptonicotinic acid, 3- [N- ( 2-mercaptoethyl) carbamoyl] propionic acid, 3- [N- (2-mercaptoethyl) amino] propionic acid, N- (3-mercaptopropionyl) alanine, 2-mercaptoethanesulfonic acid, 3-mercaptopropanesulfonic acid, 4-mercaptobutanesulfonic acid, dodecyl (4-methylthio) phenyl ether, 2-mercaptoethanol, 3-mercapto-1,2-propanediol, 1-mercapto-2-propanol, 3-mercapto-2-butanol, mercaptophenol , 2-me Mercapto compounds such as captoethylamine, 2-mercaptoimidazole, 2-mercaptobenzimidazole, 2-mercapto-3-pyridinol, 2-mercaptobenzothiazole, mercaptoacetic acid, disulfide compounds obtained by oxidizing the mercapto compound, iodoacetic acid, Examples thereof include iodoalkyl compounds such as iodopropionic acid, 2-iodoethanol, 2-iodoethanesulfonic acid and 3-iodopropanesulfonic acid, and 1,4-dimethylmercaptobenzene.

  Examples of the surfactant include fluorine surfactants such as perfluoroalkyl phosphates and perfluoroalkyl carboxylates, anionic surfactants such as higher fatty acid alkali salts, alkyl sulfonates, and alkyl sulfates, and higher amines. Cationic surfactants such as halogenates and quaternary ammonium salts, nonionic surfactants such as polyethylene glycol alkyl ethers, polyethylene glycol fatty acid esters, sorbitan fatty acid esters and fatty acid monoglycerides, amphoteric surfactants, silicone surfactants Surfactants such as agents can be used, and these may be used in combination.

Examples of the melamine compound include all or part of active methylol groups (CH ₂ OH groups) in nitrogen compounds such as (poly) methylol melamine, (poly) methylol glycoluril, (poly) methylol benzoguanamine, and (poly) methylol urea. Mention may be made of compounds in which (at least two) are alkyl etherified. Here, examples of the alkyl group constituting the alkyl ether include a methyl group, an ethyl group, and a butyl group, which may be the same as or different from each other. Moreover, the methylol group which is not alkyletherified may be self-condensed within one molecule, or may be condensed between two molecules, and as a result, an oligomer component may be formed. Specifically, hexamethoxymethyl melamine, hexabutoxymethyl melamine, tetramethoxymethyl glycoluril, tetrabutoxymethyl glycoluril and the like can be used. Among these, alkyl etherified melamines such as hexamethoxymethyl melamine and hexabutoxymethyl melamine are preferable.

  The photocurable composition of the present invention is a known method such as spin coater, roll coater, bar coater, die coater, curtain coater, various printing, dipping, soda glass, quartz glass, semiconductor substrate, metal, paper, It can be applied on a supporting substrate such as plastic. Moreover, after once applying on support bases, such as a film, it can also transfer on another support base | substrate, There is no restriction | limiting in the application method.

  Moreover, as the light source of the active light used when curing the photocurable composition of the present invention, one that emits light having a wavelength of 300 to 450 nm can be used, for example, ultrahigh pressure mercury, mercury vapor arc, Carbon arc, xenon arc, etc. can be used.

  Furthermore, by using laser light as the exposure light source, the laser direct drawing method that directly forms an image from digital information such as a computer without using a mask improves not only productivity but also resolution and positional accuracy. As the laser light, light having a wavelength of 340 to 430 nm is preferably used, but an argon ion laser, a helium neon laser, a YAG laser, a semiconductor laser, etc. are visible to infrared region. Those that emit light are also used. When these lasers are used, a sensitizing dye that absorbs the region from visible to infrared is added.

  The photocurable composition of the present invention is a paint, a coating agent, a lining agent, an ink, a resist, a liquid resist, an adhesive, a printing plate, an insulating varnish, an insulating sheet, a laminate, a printed circuit board, a semiconductor device, and an LED package.・ Sealants for liquid crystal inlets, organic EL, optical elements, electrical insulation, electronic parts, separation membranes, molding materials, putty, glass fiber impregnating agents, sealants, semiconductors, solar cells It can be used for a passivation film, an interlayer insulating film, a protective film, etc.

  The photocurable composition of the present invention is used for the purpose of forming a black matrix when a black pigment is used as a colorant, and the black matrix is a color for display devices particularly for image display devices such as liquid crystal display panels. Useful for filters.

The black matrix comprises (1) a step of forming a coating film of the photocurable composition of the present invention on a substrate, and (2) a step of irradiating the coating film with active light through a mask having a predetermined pattern shape. (3) The step of developing the exposed film with a developer (particularly an alkali developer) and (4) the step of heating the film after development are preferably formed. The photocurable composition of the present invention is also useful as an ink jet system composition without a development step.
Manufacture of color filters for use in liquid crystal display panels, etc. is made by repeating the steps (1) to (4) above using the photo-curable composition of the present invention or other combinations and combining patterns of two or more colors. can do.

  EXAMPLES Hereinafter, although an Example etc. are given and this invention is demonstrated further in detail, this invention is not limited to these Examples.

[Production Example 1] Photopolymerizable unsaturated compound No. 1 Preparation of 1 30.0 g of 1,1-bis [4- (2,3-epoxypropyloxy) phenyl] indane, 7.52 g of acrylic acid, 0.080 g of 2,6-di-t-butyl-p-cresol Then, 0.183 g of tetrabutylammonium chloride and 11.0 g of PGMEA were charged and stirred at 90 ° C. for 1 hour, 105 ° C. for 1 hour and 120 ° C. for 17 hours. After cooling to room temperature, 8.11 g of succinic anhydride, 0.427 g of tetrabutylammonium chloride and 11.1 g of PGMEA were added, and the mixture was stirred at 100 ° C. for 5 hours. Further, 12.0 g of 1,1-bis [4- (2,3-epoxypropyloxy) phenyl] indane, 0.080 g of 2,6-di-t-butyl-p-cresol and 0.600 g of PGMEA were added. After stirring at 90 ° C. for 90 minutes and at 120 ° C. for 5 hours, 24.0 g of PGMEA was added to prepare PGMEA solution as a photopolymerizable unsaturated compound no. 1 was obtained (Mw = 4900, Mn = 2250, acid value (solid content) 47 mg · KOH / g, solid content 44.5 mass%).

[Production Example 2] Photopolymerizable unsaturated compound No. 1 Preparation of 2 184 g of 1,1-bis [4- (2,3-epoxypropyloxy) phenyl] indane, 58 g of acrylic acid, 0.26 g of 2,6-di-tert-butyl-p-cresol, tetra-n -0.11 g of butylammonium bromide and 23 g of PGMEA were charged and stirred at 120 ° C for 16 hours. The reaction solution was cooled to room temperature, 35 g of PGMEA, 59 g of biphthalic anhydride and 0.24 g of tetra-n-butylammonium bromide were added, and the mixture was stirred at 120 ° C. for 4 hours. Furthermore, after adding 20 g of tetrahydrophthalic anhydride, stirring at 120 ° C. for 4 hours, 100 ° C. for 3 hours, 80 ° C. for 4 hours, 60 ° C. for 6 hours, and 40 ° C. for 11 hours, PGMEA 90 g was added to add PGMEA solution As the photopolymerizable unsaturated compound no. 2 (Mw = 5000, Mn = 2100, acid value (solid content) 92.7 mgKOH / g, solid content 44.4% by mass).

[Production Example 3] Photopolymerizable unsaturated compound No. 1 Preparation of 3 1,1-bis [4- (2,3-epoxypropyloxy) phenyl] indane 43 g, acrylic acid 11 g, 2,6-di-tert-butyl-p-cresol 0.05 g, tetrabutylammonium acetate 0.11 g and PGMEA 23 g were charged and stirred at 120 ° C. for 16 hours. After cooling to room temperature, 35 g of PGMEA and 9.4 g of biphenyltetracarboxylic dianhydride were added and stirred at 120 ° C. for 8 hours. Further, 6.0 g of tetrahydrophthalic anhydride was added and stirred at 120 ° C. for 4 hours, at 100 ° C. for 3 hours, at 80 ° C. for 4 hours, at 60 ° C. for 6 hours, and at 40 ° C. for 11 hours, and then added with PGMEA 29 g to obtain a PGMEA solution As the photopolymerizable unsaturated compound no. 3 (Mw = 4000, Mn = 2100, acid value (solid content) 86 mgKOH / g, solid content 44.5% by mass).

[Comparative Production Example 1] Comparative photopolymerizable unsaturated compound No. 1 Production of 1 9,9-bis (4-glycidyloxyphenyl) fluorene 75.0 g, acrylic acid 23.8 g, 2,6-di-t-butyl-p-cresol 0.273 g, tetrabutylammonium chloride 0.585 g And 65.9 g of PGMEA, and stirred at 90 ° C. for 1 hour, 100 ° C. for 1 hour, 110 ° C. for 1 hour and 120 ° C. for 14 hours. The mixture was cooled to room temperature, 25.9 g of succinic anhydride, 0.427 g of tetrabutylammonium chloride and 1.37 g of PGMEA were added, and the mixture was stirred at 100 ° C. for 5 hours. Further, 90.0 g of 9,9-bis (4-glycidyloxyphenyl) fluorene, 0.269 g of 2,6-di-t-butyl-p-cresol, and 1.50 g of PGMEA were added, and 90 minutes at 90 ° C. After stirring at 120 ° C. for 4 hours, 93.4 g of PGMEA was added, and a comparative photopolymerizable unsaturated compound No. 1 as a target product as a PGMEA solution was added. 1 was obtained (Mw = 4190, Mn = 2170, acid value (solid content) 52 mg · KOH / g, solid content 55.0 mass%).

[Examples 1 to 7 and Comparative Examples 1 to 2] Photocurable composition No. 1-No. 7 and comparative photocurable composition No. 1-No. Preparation of 2
According to the formulation of [Table 1], the photocurable composition No. 1-No. 7 and comparative photocurable composition No. 1-No. 2 was obtained. In addition, a number represents a mass part.

A-1 Photopolymerizable unsaturated compound No. 1 1
A-2 Photopolymerizable unsaturated compound No. 2
A-3 Photopolymerizable unsaturated compound No. 3
A′-1 Comparative photopolymerizable unsaturated compound No. 1 1
B-1 Karenz MT PE1 (Showa Denko)
B-2 Karenz MT BD1 (Showa Denko)
C-1 OXE-01 (manufactured by BASF)
C-2 OXE-02 (manufactured by BASF)
C-3 N-1919 (made by ADEKA)
D-1 MA100 (carbon black; manufactured by Mitsubishi Chemical Corporation)
D-2 13M-C (titanium black; manufactured by Mitsubishi Materials Corporation)
E-1 Kayalad DPHA (polyfunctional acrylate; manufactured by Nippon Kayaku Co., Ltd.)
E-2 Aronix M-315 (polyfunctional acrylate; manufactured by Toa Gosei Co., Ltd.)
E-3 PGMEA

[Evaluation Examples 1-7 and Comparative Evaluation Examples 1-2]
After spin-coating γ-glycidoxypropylmethylethoxysilane on the substrate and spin-drying, the photocurable compositions No. 1 obtained in Examples 1 to 7 were used. 1-No. 7 and Comparative Photocurable Composition Nos. Obtained in Comparative Examples 1-2. 1-No. 2 was spin-coated (1300 rpm, 50 seconds) and dried. After pre-baking at 70 ° C. for 20 minutes, a 5% polyvinyl alcohol solution was coated to form an oxygen barrier film. After drying at 70 ° C. for 20 minutes, using a predetermined mask, using an ultra-high pressure mercury lamp as a light source, exposure was performed, soaked in a 2.5% sodium carbonate solution at 25 ° C. for 30 seconds, developed, and washed thoroughly with water. . After washing with water and drying, the pattern was fixed by baking at 230 ° C. for 1 hour. The following sensitivity and heat resistance of the obtained pattern were evaluated. The results are shown in [Table 1].
(sensitivity)
During exposure, what exposure was sufficient 70 mJ / cm ² a, inadequate in 70 mJ / cm ^2, those exposed at 100 mJ / cm ² b, insufficient in 100mJ / cm ^2, 150mJ / cm ^The one exposed in ² was designated as c.
(Heat resistance test)
The film was baked at 230 ° C. for 3 hours.

  From the above results, the photocurable composition of the present invention containing a photopolymerizable unsaturated compound having a specific structure is excellent in sensitivity and heat resistance. Therefore, the photocurable composition of the present invention is useful for a color filter.

Claims (5)

A structure which is a reaction product obtained by an esterification reaction between an epoxy addition compound having an unsaturated monobasic acid added to an epoxy compound represented by the following general formula (I) and a polybasic acid anhydride A photopolymerizable unsaturated compound (A), a polyfunctional thiol compound (B) represented by the following general formula (II), a photopolymerization initiator (C) represented by the following general formula (III), and a black pigment (D) is a photocurable composition, wherein the epoxy addition compound has 0.735 to 0.91 carboxyl groups of the unsaturated monobasic acid with respect to one epoxy group of the epoxy compound. And the content of the polyfunctional thiol compound (B) is 0.5 to (0.5 / 89.5 × 100) mass% in the composition, The content of the saturated compound (A) is in the solid content of the composition, 5 is 40 mass%, the solvent contains a concentration of the composition other than the solvent is 5 to 30 mass%, the photocurable composition is for black matrix scan.

Wherein R ¹ , R ² , R ³ and R ⁴ are each independently a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or 2 to 5 carbon atoms. Y and Z are each independently an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, an arylalkyl group having 7 to 30 carbon atoms, Represents a heterocyclic group having 2 to 20 carbon atoms, or a halogen atom, and the alkylene moiety in the alkyl group and arylalkyl group may be interrupted by an unsaturated bond, -O- or -S-, May form a ring with adjacent Zs, m represents an integer of 0 to 10, p represents an integer of 0 to 4, q represents an integer of 0 to 8, and r represents 0 to 0. 2 represents an integer of 2, s represents an integer of 0 to 2, and the total number of r and s is 2. )

(In the formula, Q is an alkylene group having 1 to 10 carbon atoms, n represents an integer of 2 to 6, and X ¹ is saturated with 1 to 20 carbon atoms having the same valence as n. Represents a hydrocarbon group.)

Wherein R ⁶ and R ⁷ are each independently a hydrogen atom, a cyano group, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, or an arylalkyl having 7 to 30 carbon atoms. Represents a group or a heterocyclic group having 2 to 20 carbon atoms,
R ^{8 and} R ⁹ are each independently a hydrogen atom, a halogen atom, a nitro group, a cyano group, a hydroxyl group, a carboxyl group, R ¹⁰ , OR ¹¹ , SR ¹² , NR ¹³ R ¹⁴ , COR ¹⁵ , SOR ¹⁶ , SO _2. R ¹⁷ or CONR ¹⁸ R ¹⁹ , R ⁸ and R ⁹ may be bonded to each other to form a ring;
R ¹⁰ , R ¹¹ , R ¹² , R ¹³ , R ¹⁴ , R ¹⁵ , R ¹⁶ , R ¹⁷ , R ¹⁸ and R ¹⁹ are each independently an alkyl group having 1 to 20 carbon atoms or 6 to 6 carbon atoms. A 30 aryl group, an arylalkyl group having 7 to 30 carbon atoms, or a heterocyclic group having 2 to 20 carbon atoms;
X ² represents an oxygen atom, a sulfur atom, a selenium atom, CR ²⁰ R ²¹ , CO, NR ²² or PR ²³ ,
X ³ represents a single bond or CO,
R ²⁰ , R ²¹ , R ²² and R ²³ are each independently a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms or an arylalkyl group having 7 to 30 carbon atoms. The methylene group in the alkyl group or arylalkyl group may be substituted with a halogen atom, a nitro group, a cyano group, a hydroxyl group, a carboxyl group or a heterocyclic group, or may be interrupted with -O-. Often,
R ²⁰ , R ²¹ , R ²² and R ²³ may each independently form a ring together with one of the adjacent benzene rings,
a represents an integer of 0 to 4,
b represents an integer of 0 to 5. ) The reaction product obtained by the esterification reaction of an epoxy addition compound having a structure in which an unsaturated monobasic acid is added to the epoxy compound represented by the following general formula (I) and a polybasic acid anhydride is further added to the general formula A photopolymerizable unsaturated compound (A) having a structure obtained by reacting an epoxy compound represented by (I), a polyfunctional thiol compound (B) represented by the following general formula (II), and the following general formula (III) Is a photocurable composition containing a photopolymerization initiator (C) and a black pigment (D), wherein the content of the polyfunctional thiol compound (B) is 0.5 to 0.5% in the composition. (0.5 / 89.5 × 100) mass%, the content of the photopolymerizable unsaturated compound (A) is 5 to 40 mass% in the solid content of the composition, and contains a solvent. , the concentration of the composition other than the solvent is 5 to 30 mass%, black matrix scan A photocurable composition for use.

Wherein R ¹ , R ² , R ³ and R ⁴ are each independently a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or 2 to 5 carbon atoms. Y and Z are each independently an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, an arylalkyl group having 7 to 30 carbon atoms, Represents a heterocyclic group having 2 to 20 carbon atoms, or a halogen atom, and the alkylene moiety in the alkyl group and arylalkyl group may be interrupted by an unsaturated bond, -O- or -S-, May form a ring with adjacent Zs, m represents an integer of 0 to 10, p represents an integer of 0 to 4, q represents an integer of 0 to 8, and r represents 0 to 0. 2 represents an integer of 2, s represents an integer of 0 to 2, and the total number of r and s is 2. )

(In the formula, Q is an alkylene group having 1 to 10 carbon atoms, n represents an integer of 2 to 6, and X ¹ is saturated with 1 to 20 carbon atoms having the same valence as n. Represents a hydrocarbon group.)

Wherein R ⁶ and R ⁷ are each independently a hydrogen atom, a cyano group, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, or an arylalkyl having 7 to 30 carbon atoms. Represents a group or a heterocyclic group having 2 to 20 carbon atoms,
R ^{8 and} R ⁹ are each independently a hydrogen atom, a halogen atom, a nitro group, a cyano group, a hydroxyl group, a carboxyl group, R ¹⁰ , OR ¹¹ , SR ¹² , NR ¹³ R ¹⁴ , COR ¹⁵ , SOR ¹⁶ , SO _2. R ¹⁷ or CONR ¹⁸ R ¹⁹ , R ⁸ and R ⁹ may be bonded to each other to form a ring;
R ¹⁰ , R ¹¹ , R ¹² , R ¹³ , R ¹⁴ , R ¹⁵ , R ¹⁶ , R ¹⁷ , R ¹⁸ and R ¹⁹ are each independently an alkyl group having 1 to 20 carbon atoms or 6 to 6 carbon atoms. A 30 aryl group, an arylalkyl group having 7 to 30 carbon atoms, or a heterocyclic group having 2 to 20 carbon atoms;
X ² represents an oxygen atom, a sulfur atom, a selenium atom, CR ²⁰ R ²¹ , CO, NR ²² or PR ²³ ,
X ³ represents a single bond or CO,
R ²⁰ , R ²¹ , R ²² and R ²³ are each independently a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms or an arylalkyl group having 7 to 30 carbon atoms. The methylene group in the alkyl group or arylalkyl group may be substituted with a halogen atom, a nitro group, a cyano group, a hydroxyl group, a carboxyl group or a heterocyclic group, or may be interrupted with -O-. Often,
R ²⁰ , R ²¹ , R ²² and R ²³ may each independently form a ring together with one of the adjacent benzene rings,
a represents an integer of 0 to 4,
b represents an integer of 0 to 5. ) The epoxy addition compound has a structure in which a carboxyl group of an unsaturated monobasic acid having a smaller number than the epoxy group is added to the epoxy group of the epoxy compound represented by the general formula (I). Item 3. The photocurable composition according to Item 2. The black matrix using the photocurable composition in any one of Claims 1-3. A color filter having a black matrix according to claim 4 .