JP2006160634A - Oxime ester compound and photopolymerization initiator containing the compound - Google Patents

Oxime ester compound and photopolymerization initiator containing the compound Download PDF

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JP2006160634A
JP2006160634A JP2004351551A JP2004351551A JP2006160634A JP 2006160634 A JP2006160634 A JP 2006160634A JP 2004351551 A JP2004351551 A JP 2004351551A JP 2004351551 A JP2004351551 A JP 2004351551A JP 2006160634 A JP2006160634 A JP 2006160634A
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compound
oxime ester
meth
acrylate
ester compound
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JP3798008B2 (en
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Mitsuo Akutsu
光男 阿久津
Daisuke Sawamoto
大介 澤本
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Adeka Corp
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Asahi Denka Kogyo KK
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Priority to PCT/JP2005/020416 priority patent/WO2006059458A1/en
Priority to KR1020077010359A priority patent/KR101262141B1/en
Priority to CN2005800373260A priority patent/CN101048377B/en
Priority to TW094140725A priority patent/TW200631942A/en
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D209/00Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/56Ring systems containing three or more rings
    • C07D209/80[b, c]- or [b, d]-condensed
    • C07D209/82Carbazoles; Hydrogenated carbazoles
    • C07D209/86Carbazoles; Hydrogenated carbazoles with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the ring system
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D209/00Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/56Ring systems containing three or more rings
    • C07D209/80[b, c]- or [b, d]-condensed
    • C07D209/82Carbazoles; Hydrogenated carbazoles
    • C07D209/88Carbazoles; Hydrogenated carbazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the ring system
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00Processes of polymerisation
    • C08F2/46Polymerisation initiated by wave energy or particle radiation
    • C08F2/48Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
    • C08F2/50Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004Photosensitive materials
    • G03F7/027Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004Photosensitive materials
    • G03F7/027Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
    • G03F7/028Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with photosensitivity-increasing substances, e.g. photoinitiators
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004Photosensitive materials
    • G03F7/027Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
    • G03F7/028Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with photosensitivity-increasing substances, e.g. photoinitiators
    • G03F7/031Organic compounds not covered by group G03F7/029

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photopolymerization initiator having high sensitivity, without causing such a fear that the initiator discolors a polymerization product or pollutes the polymerization product, an apparatus, etc. <P>SOLUTION: An oxime ester compound is expressed by general formula (I) [X is H, a halogen or an alkyl, provided that two or more X's may be different from each other when m is not less than 2; R<SB>1</SB>, R<SB>2</SB>and R<SB>3</SB>are each R, OR, COR, SR, CONRR' or CN (R and R' are each an alkyl, an aryl, an aralkyl or a heterocyclic group of which the each may be substituted hy a halogen and/or a heterocyclic group and in which an alkylene part of the alkyl and the aralkyl may be interrupted by an unsaturated bond, an ether bond, a thioether bond or an ester bond and R and R' may together form a ring); A is a cycloalkyl alkyl; and m is a positive number of 1 to 4]. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、感光性組成物に用いられる光重合開始剤として有用な新規なオキシムエステル化合物、該化合物を有効成分とする光重合開始剤、及びエチレン性不飽和結合を有する重合性化合物に該光重合開始剤を含有させてなる感光性組成物に関する。   The present invention relates to a novel oxime ester compound useful as a photopolymerization initiator for use in a photosensitive composition, a photopolymerization initiator containing the compound as an active ingredient, and a polymerizable compound having an ethylenically unsaturated bond. The present invention relates to a photosensitive composition containing a polymerization initiator.

感光性組成物は、エチレン性不飽和結合を有する重合性化合物に光重合開始剤を加えたものであり、この感光性組成物に405nmや365nmの光を照射することによって重合硬化させることができるので、光硬化性インキ、感光性印刷版、各種フォトレジスト等に用いられている。短波長の光源に感度を持つ感光性組成物は微細な印刷が可能であるため、特に365nmの光源に優れた感度を有する光重合開始剤が望まれている。   The photosensitive composition is obtained by adding a photopolymerization initiator to a polymerizable compound having an ethylenically unsaturated bond, and can be polymerized and cured by irradiating the photosensitive composition with light of 405 nm or 365 nm. Therefore, it is used for photocurable ink, photosensitive printing plate, various photoresists and the like. Since a photosensitive composition having sensitivity to a short wavelength light source can be finely printed, a photopolymerization initiator having excellent sensitivity particularly to a 365 nm light source is desired.

この感光性組成物に用いられる光重合開始剤として、下記特許文献1には、オキシムエステル誘導体を用いることが提案されている。また、下記特許文献2〜4にもオキシムエステル化合物が記載されている。しかし、これらの公知のオキシムエステル化合物は、光重合開始剤として用いた場合に、露光時の光により発生する分解物がマスクに付着し、その結果、焼付け時のパターン形状不良を引き起こし、収率の低下を招いていた。また、分解温度が240℃以下であり、現像処理後の熱硬化工程において光重合開始剤が分解することにより感光性組成物の密着性及び耐アルカリ性を低下させていた。そのため、熱分解温度が高く、光照射による開始剤の分解物が揮散して重合物や装置等を汚染したりしない光重合開始剤が望まれていた。   As a photopolymerization initiator used in the photosensitive composition, Patent Document 1 below proposes using an oxime ester derivative. The following Patent Documents 2 to 4 also describe oxime ester compounds. However, when these known oxime ester compounds are used as photopolymerization initiators, decomposition products generated by light during exposure adhere to the mask, resulting in pattern shape defects during printing and yield. Has led to a decline. In addition, the decomposition temperature was 240 ° C. or lower, and the photopolymerization initiator was decomposed in the thermosetting step after the development processing, so that the adhesiveness and alkali resistance of the photosensitive composition were lowered. Therefore, there has been a demand for a photopolymerization initiator that has a high thermal decomposition temperature and that does not volatilize the decomposition product of the initiator due to light irradiation to contaminate the polymer or apparatus.

また、下記特許文献5〜7には、より高い反応性を有するO−アシルオキシム光開始剤が提案されている。しかし、これらのO−アシルオキシム光重合開始剤も、マスク汚れや耐熱性が不十分で耐アルカリ性を低下させていた。また、特許文献7には、カルバゾリル構造を有するO−アシルオキシム化合物が記載されているが、本発明者らが検討の結果、本発明の化合物に類似のシクロアルキルオキシベンゾイルで置換されたカルバゾリル化合物は、シクロアルキルエーテルが2級水素を持つために合成できなかった。   Patent Documents 5 to 7 listed below propose O-acyloxime photoinitiators having higher reactivity. However, these O-acyloxime photopolymerization initiators also have poor alkali resistance due to insufficient mask dirt and heat resistance. Patent Document 7 describes an O-acyloxime compound having a carbazolyl structure. As a result of investigations by the present inventors, a carbazolyl compound substituted with a cycloalkyloxybenzoyl similar to the compound of the present invention. Could not be synthesized because the cycloalkyl ether has secondary hydrogen.

米国特許第3558309号明細書US Pat. No. 3,558,309 米国特許第4255513号明細書US Pat. No. 4,255,513 米国特許第4590145号明細書US Pat. No. 4,590,145 米国特許第4202697号明細書US Pat. No. 4,026,697 特開2000−80068号公報JP 2000-80068 A 特開2001−233842号公報JP 2001-233842 A 国際公開02/100903号パンフレットInternational Publication 02/100903 Pamphlet

解決しようとする問題点は、上述したように、得られる重合物を着色したり重合物や装置等を汚染したりすることがなく且つ現像性、密着性、耐アルカリ性、感度に優れた光重合開始剤がこれまでなかったということである。   The problems to be solved are, as described above, photopolymerization excellent in developability, adhesion, alkali resistance, and sensitivity without coloring the obtained polymer or contaminating the polymer or equipment. This means that there has never been an initiator.

本発明の目的は、高感度であり、重合物を着色したり重合物及び装置等を汚染したりするおそれのない、光重合開始剤を提供することにある。   An object of the present invention is to provide a photopolymerization initiator that has high sensitivity and does not cause coloration of a polymer or contaminate a polymer and an apparatus.

本発明は、下記一般式(I)で表されるオキシムエステル化合物及び該化合物を有効成分とする光重合開始剤を提供することにより、上記目的を達成したものである。   The present invention achieves the above object by providing an oxime ester compound represented by the following general formula (I) and a photopolymerization initiator containing the compound as an active ingredient.

本発明のオキシムエステル化合物は、高感度であり、且つ熱分解温度が高く感光性組成物の密着性、耐アルカリ性を損なうことがなく、更に光照射で発生する分解物がマスクに付着することがない、光重合開始剤として有用なものである。   The oxime ester compound of the present invention is highly sensitive and has a high thermal decomposition temperature without impairing the adhesion and alkali resistance of the photosensitive composition, and further, decomposition products generated by light irradiation may adhere to the mask. It is not useful as a photopolymerization initiator.

以下、本発明のオキシムエステル化合物及び該化合物を有効成分とする光重合開始剤について詳細に説明する。   Hereinafter, the oxime ester compound of the present invention and the photopolymerization initiator containing the compound as an active ingredient will be described in detail.

上記一般式(I)中、Xで表されるハロゲン原子としては、フッ素、塩素、臭素、ヨウ素が挙げられ、Xで表されるアルキル基としては、例えば、メチル、エチル、プロピル、イソプロピル、ブチル、イソブチル、第二ブチル、第三ブチル、アミル、イソアミル、第三アミル、ヘキシル、ヘプチル、オクチル、イソオクチル、2−エチルヘキシル、第三オクチル、ノニル、イソノニル、デシル、イソデシル、ビニル、アリル、ブテニル、エチニル、プロピニル、メトキシエチル、エトキシエチル、プロピロキシエチル、メトキシエトキシエチル、エトキシエトキシエチル、プロピロキシエトキシエチル、メトキシプロピル、モノフルオロメチル、ジフルオロメチル、トリフルオロメチル、トリフルオロエチル、パーフルオロエチル、2−(ベンゾオキサゾール−2’−イル)エテニル等が挙げられる。   In the general formula (I), examples of the halogen atom represented by X include fluorine, chlorine, bromine, and iodine. Examples of the alkyl group represented by X include methyl, ethyl, propyl, isopropyl, and butyl. , Isobutyl, sec-butyl, tert-butyl, amyl, isoamyl, tert-amyl, hexyl, heptyl, octyl, isooctyl, 2-ethylhexyl, tert-octyl, nonyl, isononyl, decyl, isodecyl, vinyl, allyl, butenyl, ethynyl , Propynyl, methoxyethyl, ethoxyethyl, propyloxyethyl, methoxyethoxyethyl, ethoxyethoxyethyl, propyloxyethoxyethyl, methoxypropyl, monofluoromethyl, difluoromethyl, trifluoromethyl, trifluoroethyl, perfluoroethyl, 2- (Be Zookisazoru 2'-yl) ethenyl, and the like.

R及びR’で表されるアルキル基としては、例えば、メチル、エチル、プロピル、イソプロピル、ブチル、イソブチル、第二ブチル、第三ブチル、アミル、イソアミル、第三アミル、ヘキシル、ヘプチル、オクチル、イソオクチル、2−エチルヘキシル、第三オクチル、ノニル、イソノニル、デシル、イソデシル、ビニル、アリル、ブテニル、エチニル、プロピニル、メトキシエチル、エトキシエチル、プロピロキシエチル、メトキシエトキシエチル、エトキシエトキシエチル、プロピロキシエトキシエチル、メトキシプロピル、モノフルオロメチル、ジフルオロメチル、トリフルオロメチル、トリフルオロエチル、パーフルオロエチル、2−(ベンゾオキサゾール−2’−イル)エテニル等が挙げられ、R及びR’で表されるアリール基としては、例えば、フェニル、トリル、キシリル、エチルフェニル、クロロフェニル、ナフチル、アンスリル、フェナンスレニル等が挙げられ、R及びR’で表されるアラルキル基としては、例えば、ベンジル、クロロベンジル、α−メチルベンジル、α、α−ジメチルベンジル、フェニルエチル、フェニルエテニル等が挙げられ、R及びR’で表される複素環基としては、例えば、ピリジル、ピリミジル、フリル、チオフェニル等が挙げられ、また、R及びR’が一緒になって形成しうる環としては、例えば、ピペリジン環、モルホリン環等が挙げられる。   Examples of the alkyl group represented by R and R ′ include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, amyl, isoamyl, tert-amyl, hexyl, heptyl, octyl, isooctyl. 2-ethylhexyl, tert-octyl, nonyl, isononyl, decyl, isodecyl, vinyl, allyl, butenyl, ethynyl, propynyl, methoxyethyl, ethoxyethyl, propoxyethyl, methoxyethoxyethyl, ethoxyethoxyethyl, propylethoxyethoxyethyl, Methoxypropyl, monofluoromethyl, difluoromethyl, trifluoromethyl, trifluoroethyl, perfluoroethyl, 2- (benzoxazol-2′-yl) ethenyl and the like, and aryl groups represented by R and R ′ Examples thereof include phenyl, tolyl, xylyl, ethylphenyl, chlorophenyl, naphthyl, anthryl, phenanthrenyl and the like, and examples of the aralkyl group represented by R and R ′ include benzyl, chlorobenzyl, α-methylbenzyl. , Α, α-dimethylbenzyl, phenylethyl, phenylethenyl and the like, and examples of the heterocyclic group represented by R and R ′ include pyridyl, pyrimidyl, furyl, thiophenyl and the like, and R Examples of the ring which R ′ and R ′ can form together include a piperidine ring and a morpholine ring.

Aで表されるシクロアルキルアルキル基としては、シクロプロピルメチル、2−シクロプロピルエチル、3−シクロプロピルプロピル、シクロブチルメチル、2−シクロブチルエチル、3−シクロブチルプロピル、シクロペンチルメチル、2−シクロペンチルエチル、3−シクロペンチルプロピル、シクロヘキシルメチル、3−シクロヘキシルプロピル、2−クロロ−3−シクロヘキシルプロピル等が挙げられる。   Examples of the cycloalkylalkyl group represented by A include cyclopropylmethyl, 2-cyclopropylethyl, 3-cyclopropylpropyl, cyclobutylmethyl, 2-cyclobutylethyl, 3-cyclobutylpropyl, cyclopentylmethyl, 2-cyclopentyl. Examples include ethyl, 3-cyclopentylpropyl, cyclohexylmethyl, 3-cyclohexylpropyl, 2-chloro-3-cyclohexylpropyl, and the like.

本発明のオキシムエステル化合物の中でも、上記一般式(I)において、Xがアルキル基、特にメチル基であるもの;R1がアルキル基、特にメチル基であるもの;R2がアルキル基、特にメチル基であるもの;R3がアルキル基、特にエチル基であるもの;Aがシクロアルキルアルキル基、特にシクロヘキシルメチル基であるもの;mが1であるものが好ましい。 Among the oxime ester compounds of the present invention, in the above general formula (I), X is an alkyl group, particularly a methyl group; R 1 is an alkyl group, particularly a methyl group; R 2 is an alkyl group, particularly a methyl group Preferred are those wherein R 3 is an alkyl group, especially an ethyl group; A is a cycloalkylalkyl group, especially a cyclohexylmethyl group; and m is 1.

従って、上記一般式(I)で表される本発明のオキシムエステル化合物の好ましい具体例としては、以下の化合物No.1〜No.3の化合物が挙げられる。ただし、本発明は以下の化合物により何ら制限を受けるものではない。   Accordingly, preferred specific examples of the oxime ester compound of the present invention represented by the above general formula (I) include the following compound Nos. 1-No. 3 compounds. However, the present invention is not limited by the following compounds.

上記一般式(I)で表される本発明のオキシムエステル化合物は、一般的に以下の方法により製造することができる。まず、カルバゾール化合物1とカルボン酸クロリド2及びXの1つがハロゲン原子であるカルボン酸クロリド3を同時又は順次に塩化亜鉛の存在下に反応させてアシル化合物4を得る。次いで、アシル化合物4とアルコール化合物5とをカリウム−t−ブトキシドの存在下に反応させてアシル体6を得る。アルコール化合物は、アシル化反応を行う前にカルボン酸クロリドに付加させてもよい。次いで、アシル体6と塩酸ヒドロキシルアミンとをDMFの存在下に反応させてオキシム化合物7を得る。次いで、オキシム化合物7と酸無水物8あるいは酸クロライド8’を反応させて上記一般式(I)で表される本発明のオキシムエステル化合物を得る。例えば、化合物No.1は、下記[化5]の反応式で示される方法によって製造することができる。   The oxime ester compound of the present invention represented by the above general formula (I) can be generally produced by the following method. First, the carbazole compound 1 and the carboxylic acid chloride 3 in which one of the carboxylic acid chlorides 2 and X is a halogen atom are reacted simultaneously or sequentially in the presence of zinc chloride to obtain the acyl compound 4. Subsequently, the acyl compound 4 and the alcohol compound 5 are reacted in the presence of potassium t-butoxide to obtain the acyl compound 6. The alcohol compound may be added to the carboxylic acid chloride before the acylation reaction. Next, the oxime compound 7 is obtained by reacting the acyl compound 6 with hydroxylamine hydrochloride in the presence of DMF. Subsequently, the oxime compound 7 and the acid anhydride 8 or the acid chloride 8 'are reacted to obtain the oxime ester compound of the present invention represented by the above general formula (I). For example, Compound No. 1 can be produced by the method represented by the following reaction formula [Chemical Formula 5].

本発明のオキシムエステル化合物は、エチレン性不飽和結合を有する重合性化合物の光重合開始剤として有用である。   The oxime ester compound of the present invention is useful as a photopolymerization initiator for a polymerizable compound having an ethylenically unsaturated bond.

次に、本発明の感光性組成物について説明する。   Next, the photosensitive composition of the present invention will be described.

エチレン性不飽和結合を有する上記重合性化合物としては、従来、感光性組成物に用いられているものを用いることができる。即ち、エチレン性不飽和結合を有する上記重合性化合物としては、例えば、スチレン、α−メチルスチレン、クロロスチレン等のスチレン系化合物;メチル(メタ)アクリレート、エチル(メタ)アクリレート、n−プロピル(メタ)アクリレート、イソプロピル(メタ)アクリレート、n−ブチル(メタ)アクリレート、イソブチル(メタ)アクリレート、第二ブチル(メタ)アクリレート、第三ブチル(メタ)アクリレート、テトラヒドロフリル(メタ)アクリレート、2−エチルヘキシル(メタ)アクリレート、ラウリル(メタ)アクリレート、ステアリル(メタ)アクリレート、シクロヘキシル(メタ)アクリレート、ヒドロキシエチル(メタ)アクリレート、フェノキシエチル(メタ)アクリレート、メトキシエチル(メタ)アクリレート、エトキシエチル(メタ)アクリレート、ポリ(エトキシ)エチル(メタ)アクリレート、プロピルオキシエチル(メタ)アクリレート、ブトキシエチル(メタ)アクリレート、ブトキシエトキシエチル(メタ)アクリレート、ポリ(プロピルオキシ)プロピル(メタ)アクリレート、ビニル(メタ)アクリレート、エチレングリコールジ(メタ)アクリレート、ジエチレングリコールジ(メタ)アクリレート、トリエチレングリコールジ(メタ)アクリレート、ポリエチレングリコールジ(メタ)アクリレート、プロピレングリコールジ(メタ)アクリレート、ポリプロピレングリコールジ(メタ)アクリレート、1,4−ブタンジオールジ(メタ)アクリレート、ネオペンチルグリコールジ(メタ)アクリレート、1,6−ヘキサンジオールジ(メタ)アクリレート、トリメチロールプロパントリ(メタ)アクリレート、トリメチロールエタントリ(メタ)アクリレート、トリス(2−アクリロイルエチル)イソシアヌラート、ペンタエリスリトールペンタ(メタ)アクリレート、ペンタエリスリトールテトラ(メタ)アクリレート等の多価アルコールをα,β−不飽和カルボン酸でエステル化して得られる化合物;アクリロニトリル、(メタ)アクリルアミド、N−置換(メタ)アクリレート;酢酸ビニル、イソブチルビニルエーテル、N−ビニルピロリドン、ビニルクロリド、ビニリデンクロリド、ジビニルベンゼン、ジビニルスクシナート、ジアリルフタラート、トリアリルホスファート、トリアリルイソシアヌラート等が挙げられる。これらの中でも、スチレン、メチル(メタ)アクリレート、n−ブチル(メタ)アクリレート、ヒドロキシエチル(メタ)アクリレートに、本発明のオキシムエステル化合物を有効成分とする光重合開始剤は好適である。   As the polymerizable compound having an ethylenically unsaturated bond, those conventionally used in photosensitive compositions can be used. That is, examples of the polymerizable compound having an ethylenically unsaturated bond include styrene compounds such as styrene, α-methylstyrene, and chlorostyrene; methyl (meth) acrylate, ethyl (meth) acrylate, and n-propyl (meta ) Acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, sec-butyl (meth) acrylate, tert-butyl (meth) acrylate, tetrahydrofuryl (meth) acrylate, 2-ethylhexyl ( (Meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate, cyclohexyl (meth) acrylate, hydroxyethyl (meth) acrylate, phenoxyethyl (meth) acrylate, methoxyethyl (meth) acrylate Rate, ethoxyethyl (meth) acrylate, poly (ethoxy) ethyl (meth) acrylate, propyloxyethyl (meth) acrylate, butoxyethyl (meth) acrylate, butoxyethoxyethyl (meth) acrylate, poly (propyloxy) propyl (meth) ) Acrylate, vinyl (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, polypropylene Glycol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, neopentyl glycol di (meth) acrylate, 1,6-hexa Didiol (meth) acrylate, trimethylolpropane tri (meth) acrylate, trimethylolethane tri (meth) acrylate, tris (2-acryloylethyl) isocyanurate, pentaerythritol penta (meth) acrylate, pentaerythritol tetra (meth) acrylate Compounds obtained by esterification of polyhydric alcohols such as α, β-unsaturated carboxylic acids; acrylonitrile, (meth) acrylamide, N-substituted (meth) acrylates; vinyl acetate, isobutyl vinyl ether, N-vinyl pyrrolidone, vinyl chloride , Vinylidene chloride, divinylbenzene, divinyl succinate, diallyl phthalate, triallyl phosphate, triallyl isocyanurate and the like. Among these, the photoinitiator which uses the oxime ester compound of this invention as an active ingredient is suitable for styrene, methyl (meth) acrylate, n-butyl (meth) acrylate, and hydroxyethyl (meth) acrylate.

また、エチレン性不飽和結合を有する上記重合性化合物とともに、熱可塑性有機重合体を用いることによって、硬化物の特性を改善することもできる。該熱可塑性有機重合体としては、例えば、ポリスチレン、ポリメチルメタクリレート、メチルメタクリレート−エチルアクリレート共重合体、ポリ(メタ)アクリル酸、スチレン−(メタ)アクリル酸共重合体、(メタ)アクリル酸−メチルメタクリレート共重合体、ポリビニルブチラール、セルロースエステル、ポリアクリルアミド、飽和ポリエステル、エポキシ樹脂等が挙げられ、これらの中でも、ポリスチレン、(メタ)アクリル酸−メチルメタクリレート共重合体、エポキシ樹脂が好ましい。   Moreover, the characteristic of hardened | cured material can also be improved by using a thermoplastic organic polymer with the said polymeric compound which has an ethylenically unsaturated bond. Examples of the thermoplastic organic polymer include polystyrene, polymethyl methacrylate, methyl methacrylate-ethyl acrylate copolymer, poly (meth) acrylic acid, styrene- (meth) acrylic acid copolymer, (meth) acrylic acid- Examples include methyl methacrylate copolymer, polyvinyl butyral, cellulose ester, polyacrylamide, saturated polyester, and epoxy resin. Among these, polystyrene, (meth) acrylic acid-methyl methacrylate copolymer, and epoxy resin are preferable.

また、本発明の感光性組成物には、光重合開始剤として、本発明のオキシムエステル化合物の他に、必要に応じて他の光重合開始剤を併用することも可能であり、その他の光重合開始剤を併用することによって著しい相乗効果を奏する場合もある。   In addition to the oxime ester compound of the present invention, the photo-sensitive composition of the present invention can be used in combination with other photopolymerization initiators as necessary. There may be a significant synergistic effect by using a polymerization initiator in combination.

本発明のオキシムエステル化合物と併用できる光重合開始剤としては、従来既知の化合物を用いることが可能であり、例えば、ベンゾフェノン、フェニルビフェニルケトン、1−ヒドロキシ−1−ベンゾイルシクロヘキサン、ベンジル、ベンジルジメチルケタール、1−ベンジル−1−ジメチルアミノ−1−(4'−モルホリノベンゾイル)プロパン、2−モルホリル−2−(4'−メチルメルカプト)ベンゾイルプロパン、チオキサントン、1−クロル−4−プロポキシチオキサントン、イソプロピルチオキサントン、ジエチルチオキサントン、エチルアントラキノン、4−ベンゾイル−4'−メチルジフェニルスルフィド、ベンゾインブチルエーテル、2−ヒドロキシ−2−ベンゾイルプロパン、2−ヒドロキシ−2−(4'−イソプロピル)ベンゾイルプロパン、4−ブチルベンゾイルトリクロロメタン、4−フェノキシベンゾイルジクロロメタン、ベンゾイル蟻酸メチル、1,7−ビス(9'−アクリジニル)ヘプタン、9−n−ブチル−3,6−ビス(2'−モルホリノイソブチロイル)カルバゾール、2−メチル−4,6−ビス(トリクロロメチル)−s−トリアジン、2−フェニル−4,6−ビス(トリクロロメチル)−s−トリアジン、2−ナフチル−4,6−ビス(トリクロロメチル)−s−トリアジン、2,2−ビス(2−クロロフェニル)−4,5,4’,5’−テトラフェニル−1−2’−ビイミダゾール等が挙げられる。   As the photopolymerization initiator that can be used in combination with the oxime ester compound of the present invention, conventionally known compounds can be used. For example, benzophenone, phenylbiphenyl ketone, 1-hydroxy-1-benzoylcyclohexane, benzyl, benzyldimethyl ketal 1-benzyl-1-dimethylamino-1- (4′-morpholinobenzoyl) propane, 2-morpholy-2- (4′-methylmercapto) benzoylpropane, thioxanthone, 1-chloro-4-propoxythioxanthone, isopropylthioxanthone , Diethylthioxanthone, ethyl anthraquinone, 4-benzoyl-4′-methyldiphenyl sulfide, benzoin butyl ether, 2-hydroxy-2-benzoylpropane, 2-hydroxy-2- (4′-isopropyl) Benzoylpropane, 4-butylbenzoyltrichloromethane, 4-phenoxybenzoyldichloromethane, methyl benzoylformate, 1,7-bis (9′-acridinyl) heptane, 9-n-butyl-3,6-bis (2′-morpholinoiso) Butyroyl) carbazole, 2-methyl-4,6-bis (trichloromethyl) -s-triazine, 2-phenyl-4,6-bis (trichloromethyl) -s-triazine, 2-naphthyl-4,6-bis (Trichloromethyl) -s-triazine, 2,2-bis (2-chlorophenyl) -4,5,4 ′, 5′-tetraphenyl-1-2′-biimidazole and the like.

また、本発明の感光性組成物には、必要に応じて、p−アニソール、ハイドロキノン、ピロカテコール、第三ブチルカテコール、フェノチアジン等の熱重合抑制剤;可塑剤;接着促進剤;充填剤等の慣用の添加物を加えることができる。   In addition, the photosensitive composition of the present invention includes, if necessary, thermal polymerization inhibitors such as p-anisole, hydroquinone, pyrocatechol, tert-butylcatechol, and phenothiazine; plasticizers; adhesion promoters; Conventional additives can be added.

本発明の感光性組成物には、通常、必要に応じて前記の各成分(本発明のオキシムエステル化合物及びエチレン性不飽和結合を有する重合性化合物)を溶解または分散しえる溶媒、例えば、アセトン、メチルエチルケトン、メチルイソブチルケトン、メチルセロソルブ、エチルセロソルブ、クロロホルム、塩化メチレン、ヘキサン、ヘプタン、オクタン、シクロヘキサン、ベンゼン、トルエン、キシレン、メタノール、エタノール、イソプロパノールを加えることができる。   In the photosensitive composition of the present invention, a solvent capable of dissolving or dispersing each of the above components (the oxime ester compound of the present invention and a polymerizable compound having an ethylenically unsaturated bond) is usually used, for example, acetone. , Methyl ethyl ketone, methyl isobutyl ketone, methyl cellosolve, ethyl cellosolve, chloroform, methylene chloride, hexane, heptane, octane, cyclohexane, benzene, toluene, xylene, methanol, ethanol, isopropanol can be added.

本発明の感光性組成物は、ロールコーター、カーテンコーター、各種の印刷、浸漬等の公知の手段で、金属、紙、プラスチック等の支持基体上に適用される。また、一旦フィルム等の支持基体上に施した後、他の支持基体上に転写することもでき、その適用方法に制限はない。   The photosensitive composition of the present invention is applied onto a support substrate such as metal, paper, plastic, etc. by a known means such as a roll coater, curtain coater, various printing, and immersion. 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.

本発明の感光性組成物は、光硬化性塗料、光硬化性インキ、光硬化性接着剤、印刷版、印刷配線板用フォトレジスト等の各種の用途に使用することができ、その用途に特に制限
はない。
The photosensitive composition of the present invention can be used for various applications such as a photocurable paint, a photocurable ink, a photocurable adhesive, a printing plate, and a photoresist for a printed wiring board. There is no limit.

また、本発明のオキシムエステル化合物を含有する感光性組成物を硬化させる際に用いられる活性光の光源としては、波長300〜450nmの光を発光するものを用いることができ、例えば、超高圧水銀、水銀蒸気アーク、カーボンアーク、キセノンアーク等を用いることができる。   Moreover, as a light source of the active light used when hardening the photosensitive composition containing the oxime ester compound of this invention, what emits light with a wavelength of 300-450 nm can be used, for example, ultrahigh pressure mercury Mercury vapor arc, carbon arc, xenon arc, etc. can be used.

尚、本発明の感光性組成物において、光重合開始剤の添加量は特に限定されるものではないが、本発明のオキシムエステル化合物は、エチレン性不飽和結合を有する上記重合性化合物100重量部に対して、好ましくは1〜50重量部、より好ましくは5〜30重量部である。   In the photosensitive composition of the present invention, the amount of photopolymerization initiator added is not particularly limited, but the oxime ester compound of the present invention is 100 parts by weight of the polymerizable compound having an ethylenically unsaturated bond. The amount is preferably 1 to 50 parts by weight, more preferably 5 to 30 parts by weight.

以下、実施例等を挙げて本発明をさらに詳細に説明するが、本発明はこれらの実施例に限定されるものではない。   EXAMPLES Hereinafter, although an Example etc. are given and this invention is demonstrated further in detail, this invention is not limited to these Examples.

[実施例1]化合物No.1の製造
<ステップ1>4−フルオロ−2−メチル安息香酸クロリドの製造
下記構造を持つ4−フルオロ−2−メチル安息香酸クロリドを、以下のようにして製造した。
Example 1 Compound no. Production of 1 <Step 1> Production of 4-fluoro-2-methylbenzoic acid chloride 4-fluoro-2-methylbenzoic acid chloride having the following structure was produced as follows.

窒素雰囲気下で4−フルオロ−2−メチル安息香酸20.0g(0.13モル)、N,N−ジメチルホルムアミド0.10g(1.3ミリモル)及びトルエン134gを仕込み、室温にて塩化チオニル23.2g(0.20モル)を滴下し、60〜65℃に昇温して1時間攪拌した。溶媒を留去し、減圧下、50℃で乾燥して褐色液体19.7g(収率88%、GC純度99%)を得た。   Under a nitrogen atmosphere, 20.0 g (0.13 mol) of 4-fluoro-2-methylbenzoic acid, 0.10 g (1.3 mmol) of N, N-dimethylformamide and 134 g of toluene were charged, and thionyl chloride 23 was added at room temperature. 0.2 g (0.20 mol) was added dropwise, and the mixture was heated to 60 to 65 ° C. and stirred for 1 hour. The solvent was distilled off and the residue was dried at 50 ° C. under reduced pressure to obtain 19.7 g of a brown liquid (yield 88%, GC purity 99%).

得られた褐色液体のIR測定の結果は次の通りであり、該褐色液体は目的物であることを確認した。
IR測定:(cm-1
2985、2931、1766、1606、1579、1486、1450、1384、1240、1189、1105、964、869、823
The results of IR measurement of the obtained brown liquid were as follows, and it was confirmed that the brown liquid was the target product.
IR measurement: (cm −1 )
2985, 2931, 1766, 1606, 1579, 1486, 1450, 1384, 1240, 1189, 1105, 964, 869, 823

<ステップ2>アシル体の製造
下記アシル体を、以下のようにして製造した。
<Step 2> Production of acyl body The following acyl body was produced as follows.

モノクロロベンゼン33.1g、N−エチルカルバゾール21.5g(0.11モル)及び塩化亜鉛1.40g(10ミリモル)を混合して80℃まで昇温し、4−フルオロ−2−メチル安息香酸クロリド17.3g(0.10モル)を滴下した。80〜85℃で1時間攪拌後、室温まで冷却した。n−ヘプタン33.1g及び水16.5gを加えて油層を分離し、1%水酸化ナトリウム水溶液8.30gを加えて中和し、さらに水40.0gを2回に分けて加えて油層を洗浄した。油層を分離してn−ヘプタンを留去し、モノクロロベンゼン溶液50.0gを得た。得られたモノクロロベンゼン溶液にモノクロロベンゼン90.0gを滴下し、塩化アルミニウム40.0gを加えて10〜15℃に冷却した。塩化アセチル9.90g(0.13モル)を10〜20℃で滴下し、室温で1時間攪拌した。反応液を、二塩化エタン224g及び氷水134gを混合したものに25〜30℃で滴下した。油層を分離し、5%HCl水溶液40g、水40g、2%NaOH水溶液40gの順に洗浄した。二塩化エタンを留去し、酢酸n−プロピル74.6gから再結晶を行った。ろ過、酢酸n−プロピル/n−ヘプタン混合溶媒による洗浄を経て、淡黄色固体22.4g(収率60%、HPLC純度98%)を得た。   Monochlorobenzene 33.1 g, N-ethylcarbazole 21.5 g (0.11 mol) and zinc chloride 1.40 g (10 mmol) were mixed and the temperature was raised to 80 ° C., and 4-fluoro-2-methylbenzoic acid chloride was added. 17.3 g (0.10 mol) was added dropwise. After stirring at 80 to 85 ° C. for 1 hour, the mixture was cooled to room temperature. The oil layer was separated by adding 33.1 g of n-heptane and 16.5 g of water, neutralized by adding 8.30 g of 1% aqueous sodium hydroxide solution, and further adding 40.0 g of water in two portions to add the oil layer. Washed. The oil layer was separated and n-heptane was distilled off to obtain 50.0 g of a monochlorobenzene solution. To the obtained monochlorobenzene solution, 90.0 g of monochlorobenzene was added dropwise, 40.0 g of aluminum chloride was added, and the mixture was cooled to 10 to 15 ° C. 9.90 g (0.13 mol) of acetyl chloride was added dropwise at 10 to 20 ° C., and the mixture was stirred at room temperature for 1 hour. The reaction solution was added dropwise at 25 to 30 ° C. to a mixture of 224 g of ethane dichloride and 134 g of ice water. The oil layer was separated and washed in the order of 40 g of 5% aqueous HCl, 40 g of water, and 40 g of 2% aqueous NaOH. Ethane dichloride was distilled off and recrystallization was performed from 74.6 g of n-propyl acetate. After filtration and washing with a mixed solvent of n-propyl acetate / n-heptane, 22.4 g (yield 60%, HPLC purity 98%) of a pale yellow solid was obtained.

得られた淡黄色結晶は、融点175℃で、1H−NMRのケミカルシフト及びIRの測定結果は次の通りであり、目的物であるアシル体であることを確認した。
1H−NMR測定:(ppm)
8.70(s:1H)、8.52(s:1H)、8.17(d:1H)、8.09(d:1H)、7.50(s:1H)、7.48(d:1H)、7.39(d:1H)、7.05(d:1H)、7.00(d:1H)、4.45(d:2H)、2.73(s:3H)、2.37(s:3H)、1.49(t:3H)
IR測定:(cm-1
3448、3054、2064、1662、1625、1589、1567、1484、1386、1305、1245、1153、1124、1022、809
The obtained pale yellow crystals had a melting point of 175 ° C., 1 H-NMR chemical shift and IR measurement results were as follows, and were confirmed to be the target acyl.
1 H-NMR measurement: (ppm)
8.70 (s: 1H), 8.52 (s: 1H), 8.17 (d: 1H), 8.09 (d: 1H), 7.50 (s: 1H), 7.48 (d : 1H), 7.39 (d: 1H), 7.05 (d: 1H), 7.00 (d: 1H), 4.45 (d: 2H), 2.73 (s: 3H), 2 .37 (s: 3H), 1.49 (t: 3H)
IR measurement: (cm −1 )
3448, 3054, 2064, 1662, 1625, 1589, 1567, 1484, 1386, 1305, 1245, 1153, 1124, 1022, 809

<ステップ3>化合物No.1の製造
窒素気流下、シクロヘキサンメタノール57.1g(0.5モル)及び1,3−ジメチル−2−イミダゾリジノン66.0gを仕込み、30〜40℃でカリウム−t−ブトキシド8.4g(0.075モル)を加えて73〜75℃まで昇温した。続いてステップ2で得られたアシル体の18.7g(0.05モル)を加えて1時間攪拌した。塩酸ヒドロキシルアミン6.3g(0.09モル)を加えて73〜75℃で1時間攪拌後、室温まで冷却した。酢酸n−プロピル48.2g及び4%水酸化カリウム水溶液24.1gを加えて油層を分離し、水75gを2回に分けて加えて油層を洗浄した。油層を分離して脱水後、60〜70℃で無水酢酸6.1g(0.06モル)を加え、80〜90℃で1時間攪拌した。室温まで冷却すると淡黄色固体が析出した。ろ過、酢酸n−プロピル/n−ヘプタンによる洗浄を経て、淡黄色結晶10g(収率38%、HPLC純度99%<)を得た。該淡黄色結晶について分析を行ったところ、該淡黄色結晶は目的物である化合物No.1であることが確認された。分析結果を以下に示す。
<Step 3> Compound No. Production of 1 Under a nitrogen stream, 57.1 g (0.5 mol) of cyclohexanemethanol and 66.0 g of 1,3-dimethyl-2-imidazolidinone were charged, and 8.4 g of potassium tert-butoxide was added at 30 to 40 ° C. 0.075 mol) was added and the temperature was raised to 73-75 ° C. Subsequently, 18.7 g (0.05 mol) of the acyl compound obtained in Step 2 was added and stirred for 1 hour. After adding 6.3 g (0.09 mol) of hydroxylamine hydrochloride and stirring at 73 to 75 ° C. for 1 hour, the mixture was cooled to room temperature. 48.2 g of n-propyl acetate and 24.1 g of 4% potassium hydroxide aqueous solution were added to separate the oil layer, and 75 g of water was added in two portions to wash the oil layer. After separating and dehydrating the oil layer, 6.1 g (0.06 mol) of acetic anhydride was added at 60 to 70 ° C., and the mixture was stirred at 80 to 90 ° C. for 1 hour. A pale yellow solid precipitated upon cooling to room temperature. Filtration and washing with n-propyl acetate / n-heptane gave 10 g of pale yellow crystals (38% yield, HPLC purity 99% <). When the pale yellow crystal was analyzed, it was found that the pale yellow crystal was the target compound No. 1. 1 was confirmed. The analysis results are shown below.

(分析結果)
(1)融点:148.2℃
(2)1H−NMR測定:(ppm)
8.50(d:1H)、8.44(d:1H)、8.08(dd:1H)、7.98(dd:1H)、7.47(d:1H)、7.45(d:1H)、7.37(d:1H)、6.86(d:1H)、6.78(dd:1H)、4.43(q:2H)、3.84(d:2H)、2.52(s:3H)、2.40(s:3H)、2.30(s:3H)、1.92‐1.71(m:6H)、1.48(t:3H)1.38−1.04(m:5H)
(3)IR測定:(cm‐1
2927、2853、1751、1649、1626、1605、1590、1568、1488、1450、1376、1308、1275、1244、1149、1129、1044、1009、983、941、894、812、772
(4)UVスペクトル測定(アセトニトリル:水=9:1)
λmax=273、299、341nm
(5)分解温度測定(窒素ガス雰囲気下、昇温速度10℃/分、5%重量減少温度)
241.2℃
(result of analysis)
(1) Melting point: 148.2 ° C
(2) 1 H-NMR measurement: (ppm)
8.50 (d: 1H), 8.44 (d: 1H), 8.08 (dd: 1H), 7.98 (dd: 1H), 7.47 (d: 1H), 7.45 (d : 1H), 7.37 (d: 1H), 6.86 (d: 1H), 6.78 (dd: 1H), 4.43 (q: 2H), 3.84 (d: 2H), 2 .52 (s: 3H), 2.40 (s: 3H), 2.30 (s: 3H), 1.92-1.71 (m: 6H), 1.48 (t: 3H) 1.38 -1.04 (m: 5H)
(3) IR measurement: (cm- 1 )
2927, 2853, 1751, 1649, 1626, 1605, 1590, 1568, 1488, 1450, 1376, 1308, 1275, 1244, 1149, 1129, 1044, 1009, 983, 941, 894, 812, 772
(4) UV spectrum measurement (acetonitrile: water = 9: 1)
λmax = 273, 299, 341 nm
(5) Decomposition temperature measurement (temperature increase rate 10 ° C / min, 5% weight loss temperature under nitrogen gas atmosphere)
241.2 ° C

[実施例2]感光性組成物No.1の製造
アクリル系共重合体14gに対し、トリメチロールプロパントリアクリレート 5.9g、実施例1で得られた化合物No.1の2.7g 及びエチルセロソルブ 79gを加えて良く攪拌し、感光性組成物No.1を得た。
尚、上記アクリル系共重合体は、メタクリル酸20質量部、ヒドロキシエチルメタクリレート15質量部、メチルメタクリレート10質量部及びブチルメタクリレート55質量部をエチルセロソルブ300質量部に溶解し、窒素雰囲気下でアゾビスイソブチルニトリル0.75質量部を加えて70℃で5時間反応させることにより得られたものである。
[Example 2] Photosensitive composition no. Production of Compound No. 1 obtained in Example 1, 5.9 g of trimethylolpropane triacrylate, with respect to 14 g of acrylic copolymer. 2.7 g of No. 1 and 79 g of ethyl cellosolve were added and stirred well. 1 was obtained.
The acrylic copolymer was prepared by dissolving 20 parts by mass of methacrylic acid, 15 parts by mass of hydroxyethyl methacrylate, 10 parts by mass of methyl methacrylate and 55 parts by mass of butyl methacrylate in 300 parts by mass of ethyl cellosolve, and azobis under nitrogen atmosphere. It was obtained by adding 0.75 part by mass of isobutylnitrile and reacting at 70 ° C. for 5 hours.

[実施例3]感光性組成物No.2の製造
アクリル系共重合体7.2gに対し、トリメチロールプロパントリアクリレート 4.3g、実施例1で得られた化合物No.1の2.0g 及びエチルセロソルブ 87gを加えて良く攪拌し、感光性組成物No.2を得た。
[Example 3] Photosensitive composition no. Production of Compound No. 2 obtained in Example 1, 4.3 g of trimethylolpropane triacrylate with respect to 7.2 g of acrylic copolymer. 1 and 2.0 g of ethyl cellosolve were added and stirred well. 2 was obtained.

[実施例4]感光性組成物No.3の製造
スチレン−アクリル系感光性共重合体14gに対し、ジペンタエリスリトールヘキサアクリレート 6.0g、実施例1で得られた化合物No.1の1.3g 、2,2−ビス(2−クロロフェニル)− 4,5,4',5'−テトラフェニル− 1−2'−ビイミダゾール 1.3g及びエチルセロソルブ83gを加えて良く攪拌し、感光性組成物No.3を得た。
尚、上記スチレン−アクリル系感光性共重合体は、スチレン26.3質量部、2−ヒドロキシメタクリレート43.8質量部、メタクリル酸35質量部及びメタクリル酸エチル70質量部をエチルセロソルブ175質量部に溶解し、窒素雰囲気下でアゾビスイソブチルニトリル0.75質量部を加え90℃で5時間反応させ、次いで、イソシアネートエチルメタクリレート23.5質量部、オクチル酸錫0.11質量部をエチルセロソルブ20質量部で溶解したものを約10分かけて滴下し、滴下後2時間反応させることにより得られたものである。
[Example 4] Photosensitive composition No. Production of Compound No. 3 obtained in Example 1, 6.0 g of dipentaerythritol hexaacrylate with respect to 14 g of styrene-acrylic photosensitive copolymer. 1.3 g of 1, 2,2-bis (2-chlorophenyl) -4,5,4 ′, 5′-tetraphenyl-1-2′-biimidazole 1.3 g and ethyl cellosolve 83 g were added and stirred well. , Photosensitive composition No. 3 was obtained.
The styrene-acrylic photosensitive copolymer is composed of 26.3 parts by mass of styrene, 43.8 parts by mass of 2-hydroxymethacrylate, 35 parts by mass of methacrylic acid, and 70 parts by mass of ethyl methacrylate in 175 parts by mass of ethyl cellosolve. Dissolve, add 0.75 parts by mass of azobisisobutylnitrile in a nitrogen atmosphere, react at 90 ° C. for 5 hours, and then add 23.5 parts by mass of isocyanate ethyl methacrylate and 0.11 parts by mass of tin octylate to 20 parts by mass of ethyl cellosolve. What was melt | dissolved in a part is dripped over about 10 minutes, and it is obtained by making it react for 2 hours after dripping.

[実施例5]感光性組成物No.4の製造
スチレン−アクリル系感光性共重合体12gに対し、ジペンタエリスリトールペンタ及びヘキサアクリレート 8.1g、実施例1で得られた化合物No.1の2.5g、エチルセロソルブ47g 及びシクロヘキサノン 30gを加えて良く攪拌し、感光性組成物No.4を得た。
[Example 5] Photosensitive composition no. Production of Dipentaerythritol Penta and 8.1 g of Hexaacrylate, Compound No. 1 obtained in Example 1 with respect to 12 g of styrene-acrylic photosensitive copolymer. 1 and 2.5 g of ethyl cellosolve and 30 g of cyclohexanone were added and stirred well. 4 was obtained.

[実施例6]感光性組成物No.5の製造
アクリル系共重合体20gに対し、トリメチロールプロパントリアクリレート 8.7g、実施例1で得られた化合物No.1の2.2g 、ビスフェノールA型エポキシ樹脂4.6g及びエチルセロソルブ 65gを加えて良く攪拌し、感光性組成物No.5を得た。
[Example 6] Photosensitive composition no. Production of Compound No. 5 obtained in Example 1, 8.7 g of trimethylolpropane triacrylate with respect to 20 g of acrylic copolymer. No. 1 of 2.2 g, bisphenol A type epoxy resin 4.6 g and ethyl cellosolve 65 g were added and stirred well. 5 was obtained.

[比較例1]感光性組成物No.6の製造
実施例2で用いたアクリル系共重合体14gに対して、ジペンタエリスリトールペンタ及びヘキサアクリレート5.9g、比較化合物1(下記[化8])2.1g及びエチルセロソルブ78gを加えてよく攪拌し、感光性組成物No.6を得た。
[Comparative Example 1] Photosensitive composition No. Preparation of 6 To 14 g of the acrylic copolymer used in Example 2, 5.9 g of dipentaerythritol penta and hexaacrylate, 2.1 g of comparative compound 1 (the following [Chemical Formula 8]) and 78 g of ethyl cellosolve were added. Stir well and photosensitive composition no. 6 was obtained.

[比較例2]感光性組成物No.7の製造
アクリル系共重合体の代わりに実施例4で用いたスチレン−アクリル系感光性共重合体を用いた以外は、比較例1と同一の条件で感光性組成物No.7を得た。
[Comparative Example 2] Photosensitive composition No. Production of Photosensitive Composition No. 7 under the same conditions as in Comparative Example 1 except that the styrene-acrylic photosensitive copolymer used in Example 4 was used instead of the acrylic copolymer. 7 was obtained.

[比較例3]感光性組成物No.8の製造
実施例2で用いたアクリル系共重合体7.2gに対して、トリメチロールプロパントリアクリレート4.3g、比較化合物2(下記[化9])1.5g及びエチルセロソルブ87gを加えて良く攪拌し、感光性組成物No.8を得た。
[Comparative Example 3] Photosensitive composition No. Production of 8 To 7.2 g of the acrylic copolymer used in Example 2, 4.3 g of trimethylolpropane triacrylate, 1.5 g of comparative compound 2 (the following [Chemical Formula 9]) and 87 g of ethyl cellosolve were added. Stir well and photosensitive composition no. 8 was obtained.

[比較例4]感光性組成物No.9の製造
アクリル系共重合体の代わりに、実施例4で用いたスチレン−アクリル系感光性共重合体を用いた以外は、比較例3と同一の条件で感光性組成物No.9を得た。
[Comparative Example 4] Photosensitive composition No. Production of Photosensitive Composition No. 9 under the same conditions as in Comparative Example 3 except that the styrene-acrylic photosensitive copolymer used in Example 4 was used instead of the acrylic copolymer. 9 was obtained.

得られた感光性組成物の評価は以下のようにして行った。すなわち、基板上にr−グリシドキシプロピルメチルエトキシシランをスピンコートして良くスピン乾燥させた後、上記感光性組成物No.1〜9をスピンコート(1300r.p.m、50秒間)し乾燥させた。70℃で20分間プリベークを行った後、ポリビニルアルコール5質量%溶液をコートして酸素遮断膜とした。70℃20分間の乾燥後、所定のマスクを用い、光源として超高圧水銀ランプを用いて露光後、2.5%炭酸ナトリウム溶液に25℃で30秒間浸漬して現像し、良く水洗した。水洗乾燥後、230℃で1時間ベークしてパターンを定着させた。尚、露光量は、80mJ/cm2 であった。得られたパターンについて、以下の評価を行った。各感光性組成物に用いた光重合開始剤とその分解温度および各種評価結果を表1に示す。 Evaluation of the obtained photosensitive composition was performed as follows. That is, after r-glycidoxypropylmethylethoxysilane was spin-coated on a substrate and spin-dried, the above photosensitive composition No. 1 was prepared. 1 to 9 were spin coated (1300 rpm, 50 seconds) and dried. After pre-baking at 70 ° C. for 20 minutes, a 5% by mass polyvinyl alcohol solution was coated to form an oxygen barrier film. After drying at 70 ° C. for 20 minutes, the film was exposed using an ultrahigh pressure mercury lamp as a light source using a predetermined mask, developed by immersing in a 2.5% sodium carbonate solution at 25 ° C. for 30 seconds, and thoroughly washed with water. After washing with water and drying, the pattern was fixed by baking at 230 ° C. for 1 hour. The exposure amount was 80 mJ / cm 2 . The following evaluation was performed about the obtained pattern. Table 1 shows the photopolymerization initiator used in each photosensitive composition, its decomposition temperature, and various evaluation results.

<密着性>
JIS D 0202の試験方法に従い、露光現像した後200℃で30分間加熱した塗膜に基盤目状にクロスカットを入れ、次いでセロハンテープによってピーリングテストを行い、基盤目の剥離の状態を目視により評価した。全く剥離が認められなかったものを○、剥離が認められたものを×とした。
<耐アルカリ性>
現像露光した後、200℃で30分間加熱処理を行った。加熱処理後の塗膜をa)5%NaOHaq.中24時間、b)4%KOHaq.中50℃で10分間、c)1%NaOHaq.中80℃で5分間の条件で浸漬し、浸漬後の外観を目視により評価した。外観変化もなくレジストの剥離も全くなかったものを○、レジストの浮きが見られたものを△、レジストの剥離が認められたものを×とした。
<感度>
露光量を、50mJ/cm2で行った以外は、上記の現像性の試験と同様にして露光部の形状がマスクの形状に一致するものを5、マスクの形状に対して面積で5%以下ではあるが欠落が認められるものを4、面積で5〜20%の欠落があるものを3、面積で20〜50%の欠落があるものを2、面積で50%より欠落が大きいものを1として5段階で評価した。結果を表1に示す。
<Adhesion>
According to the test method of JIS D 0202, a cross-cut is made in a substrate pattern on a coating film that has been exposed and developed and heated at 200 ° C. for 30 minutes, and then a peeling test is performed with a cellophane tape to visually evaluate the peeling state of the substrate eye. did. A sample in which no peeling was observed was marked with ○, and a sample in which peeling was observed was marked with ×.
<Alkali resistance>
After the development exposure, heat treatment was performed at 200 ° C. for 30 minutes. The heat-treated coating film was a) 5% NaOH aq. For 24 hours, b) 4% KOH aq. 10 min at 50 ° C., c) 1% NaOH aq. It was immersed for 5 minutes at a medium temperature of 80 ° C., and the appearance after immersion was visually evaluated. The case where the appearance was not changed and the resist was not peeled off was rated as “◯”, the case where the resist was observed to be lifted, and the case where the resist was observed to be peeled as “X”.
<Sensitivity>
Except for the exposure dose of 50 mJ / cm 2 , 5 in which the shape of the exposed portion matches the shape of the mask in the same manner as in the above developability test, 5% or less in area with respect to the mask shape However, there are 4 cases where omissions are recognized, 3 cases with 5-20% omissions in area, 2 cases with omissions of 20-50% in area, and 1 cases with omissions greater than 50% in area. It was evaluated in five stages. The results are shown in Table 1.

実施例1〜6及び比較例1〜4より明らかなように本発明のオキシムエステル化合物を用いた感光性組成物の密着性は公知のオキシムエステル化合物の場合よりも同等又は優れて、耐アルカリ性では優れている。特に比較例1及び2より密着性、耐アルカリ性に優れており、比較化合物1との基本的な性能差であるか、比較化合物1の耐熱性が低いために230℃での熱硬化処理において比較化合物1が分解したために感光性組成物の性能が低下したと考えられる。本発明のオキシムエステル化合物は、分解温度が240℃以上と公知のオキシムエステル化合物より9〜50℃耐熱性に優れ、熱硬化処理温度において安定である。   As is clear from Examples 1 to 6 and Comparative Examples 1 to 4, the adhesion of the photosensitive composition using the oxime ester compound of the present invention is equal to or better than that of the known oxime ester compound, Are better. In particular, it has better adhesion and alkali resistance than Comparative Examples 1 and 2, and is a basic performance difference from Comparative Compound 1 or because of the low heat resistance of Comparative Compound 1, it is compared in thermosetting treatment at 230 ° C. It is considered that the performance of the photosensitive composition was lowered due to the decomposition of Compound 1. The oxime ester compound of the present invention has a decomposition temperature of 240 ° C. or higher, excellent heat resistance of 9 to 50 ° C. than known oxime ester compounds, and is stable at the thermosetting temperature.

[実施例7]露光処理における昇華性評価
化合物No.1の開始剤0.5gをプロピレングリコールモノメチルエーテルアセテート10gに溶解し、アクリル系重合体(実施例2に同じ)0.5gを加え、混合したものを直径70mmのシャーレに入れて70℃で12時間で乾燥した。シャーレに100×100mmの石英板を蓋になるように乗せて10mJ/cm2で2時間露光した。石英版への附着物の多少により昇華性を評価した。附着物は認められなかった。露光処理前後の石英板の写真を図1及び図2に示す。
[Example 7] Evaluation of sublimation in exposure process 1 g of the initiator 1 was dissolved in 10 g of propylene glycol monomethyl ether acetate, 0.5 g of an acrylic polymer (same as in Example 2) was added, and the mixture was placed in a petri dish having a diameter of 70 mm at 12 ° C. Dried in time. A 100 × 100 mm quartz plate was placed on the petri dish so as to be a lid and exposed at 10 mJ / cm 2 for 2 hours. The sublimation property was evaluated by the amount of attachments to the quartz plate. There were no attachments. Photographs of the quartz plate before and after the exposure processing are shown in FIGS.

[比較例5]比較化合物における昇華性評価
化合物No.1を比較化合物2にかえた以外は、実施例7と同様にして附着物を評価した。多数の附着物があった。露光処理前後の石英板の写真を図3及び図4に示す。
[Comparative Example 5] Evaluation of sublimation in comparative compound The attachment was evaluated in the same manner as in Example 7 except that 1 was replaced with Comparative Compound 2. There were numerous attachments. 3 and 4 show photographs of the quartz plate before and after the exposure processing.

図1は実施例7に用いた石英板の露光前の写真であり、図2は実施例7に用いた石英板の露光後の写真である。図3は比較例5に用いた石英板の露光前の写真であり、図4は比較例5に用いた石英板の露光後の写真である。図1、図2、図3の石英板には附着物は認められない。図4では無数の結晶状の附着物が認められる。   FIG. 1 is a photograph of the quartz plate used in Example 7 before exposure, and FIG. 2 is a photograph of the quartz plate used in Example 7 after exposure. 3 is a photograph of the quartz plate used in Comparative Example 5 before exposure, and FIG. 4 is a photograph of the quartz plate used in Comparative Example 5 after exposure. No attachments are observed on the quartz plates of FIGS. In FIG. 4, countless crystalline attachments are observed.

実施例7および比較例5から本発明の化合物は露光後の昇華物がなく、マスク汚れがないと推測できる。一方、公知の光開始剤では昇華物が多量にあり、マスク汚れを起こすと推測できる。よって、本発明の光開始剤を用いた硬化性組成物は連続使用可能であるが、従来の光開始剤を用いた場合はマスクなど装置の洗浄が必要になるので、本発明の光開始剤を用いることにより生産性の向上が期待できる。   From Example 7 and Comparative Example 5, it can be inferred that the compound of the present invention has no sublimate after exposure and no mask contamination. On the other hand, it can be inferred that the known photoinitiator has a large amount of sublimation and causes mask contamination. Therefore, the curable composition using the photoinitiator of the present invention can be used continuously. However, when the conventional photoinitiator is used, it is necessary to clean a device such as a mask. The use of can be expected to improve productivity.

図1は実施例7に用いた石英板の露光前の写真である。FIG. 1 is a photograph of the quartz plate used in Example 7 before exposure. 図2は実施例7に用いた石英板の露光後の写真である。FIG. 2 is a photograph of the quartz plate used in Example 7 after exposure. 図3は比較例5に用いた石英板の露光前の写真である。FIG. 3 is a photograph of the quartz plate used in Comparative Example 5 before exposure. 図4は比較例5に用いた石英板の露光後の写真である。FIG. 4 is a photograph after exposure of the quartz plate used in Comparative Example 5.

Claims (7)

下記一般式(I)で表されるオキシムエステル化合物。
The oxime ester compound represented by the following general formula (I).
Xがアルキル基であることを特徴とする請求項1記載のオキシムエステル化合物。   The oxime ester compound according to claim 1, wherein X is an alkyl group. 1がアルキル基であることを特徴とする請求項1又は2記載のオキシムエステル化合物。 The oxime ester compound according to claim 1, wherein R 1 is an alkyl group. 2がアルキル基であることを特徴とする請求項1〜3のいずれかに記載のオキシムエステル化合物。 Oxime ester compound according to claim 1 wherein R 2 and wherein the alkyl group. 3がアルキル基であることを特徴とする請求項1〜4のいずれかに記載のオキシムエステル化合物。 Oxime ester compound according to claim 1 wherein R 3, characterized in that an alkyl group. 請求項1〜5のいずれかに記載のオキシムエステル化合物を有効成分とする光重合開始剤。   The photoinitiator which uses the oxime ester compound in any one of Claims 1-5 as an active ingredient. エチレン性不飽和結合を有する重合性化合物に、請求項6に記載の光重合開始剤を含有させてなる感光性組成物。   The photosensitive composition formed by making the polymeric compound which has an ethylenically unsaturated bond contain the photoinitiator of Claim 6.
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