WO2011052327A1 - 芳香族スルホニウム塩化合物 - Google Patents
芳香族スルホニウム塩化合物 Download PDFInfo
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- WO2011052327A1 WO2011052327A1 PCT/JP2010/066815 JP2010066815W WO2011052327A1 WO 2011052327 A1 WO2011052327 A1 WO 2011052327A1 JP 2010066815 W JP2010066815 W JP 2010066815W WO 2011052327 A1 WO2011052327 A1 WO 2011052327A1
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- 0 Cc1c(C)c(*)c(C(c(c(*)c2*)c(C)c(*)c2Sc(cc2)ccc2S(Cc2c(*)c(*)c(*)c(*)c2*)c2c(*)c(*)c(*)c(C)c2*)=O)c(*)c1C Chemical compound Cc1c(C)c(*)c(C(c(c(*)c2*)c(C)c(*)c2Sc(cc2)ccc2S(Cc2c(*)c(*)c(*)c(*)c2*)c2c(*)c(*)c(*)c(C)c2*)=O)c(*)c1C 0.000 description 1
- DIJXGOMWUIWIIB-UHFFFAOYSA-N O=C(c1ccccc1)c(cc1)cc(F)c1Sc(cc1)ccc1S(c(cc1)ccc1F)c(cc1)ccc1F Chemical compound O=C(c1ccccc1)c(cc1)cc(F)c1Sc(cc1)ccc1S(c(cc1)ccc1F)c(cc1)ccc1F DIJXGOMWUIWIIB-UHFFFAOYSA-N 0.000 description 1
- TXCQNVLAMLRBAC-UHFFFAOYSA-N O=C(c1ccccc1)c(cc1)cc(F)c1Sc(cc1)ccc1[S+](c(cc1)ccc1F)c(cc1)ccc1F Chemical compound O=C(c1ccccc1)c(cc1)cc(F)c1Sc(cc1)ccc1[S+](c(cc1)ccc1F)c(cc1)ccc1F TXCQNVLAMLRBAC-UHFFFAOYSA-N 0.000 description 1
- LEPNZVAUVHNUGC-UHFFFAOYSA-N Oc(c(C(c1ccccc1)=O)c1)cc(Sc(cc2)ccc2S(c(cc2)ccc2F)c(cc2)ccc2F)c1F Chemical compound Oc(c(C(c1ccccc1)=O)c1)cc(Sc(cc2)ccc2S(c(cc2)ccc2F)c(cc2)ccc2F)c1F LEPNZVAUVHNUGC-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C381/00—Compounds containing carbon and sulfur and having functional groups not covered by groups C07C301/00 - C07C337/00
- C07C381/12—Sulfonium compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
- C07C309/01—Sulfonic acids
- C07C309/02—Sulfonic acids having sulfo groups bound to acyclic carbon atoms
- C07C309/03—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
- C07C309/06—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton containing halogen atoms, or nitro or nitroso groups bound to the carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/41—Compounds containing sulfur bound to oxygen
- C08K5/42—Sulfonic acids; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B69/00—Dyes not provided for by a single group of this subclass
- C09B69/001—Dyes containing an onium group attached to the dye skeleton via a bridge
- C09B69/004—Sulfonium group
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0042—Photosensitive materials with inorganic or organometallic light-sensitive compounds not otherwise provided for, e.g. inorganic resists
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0045—Photosensitive materials with organic non-macromolecular light-sensitive compounds not otherwise provided for, e.g. dissolution inhibitors
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
- C08K5/375—Thiols containing six-membered aromatic rings
Definitions
- the present invention relates to a novel aromatic sulfonium salt compound, and more specifically, an aromatic sulfonium salt compound, a photoacid generator and a cationic polymerization initiator using the same, and a resist composition and a cationic polymerizable composition containing them.
- a novel aromatic sulfonium salt compound and more specifically, an aromatic sulfonium salt compound, a photoacid generator and a cationic polymerization initiator using the same, and a resist composition and a cationic polymerizable composition containing them.
- a sulfonium salt compound is a substance that generates an acid when irradiated with energy rays such as light.
- Patent Documents 1 and 2 disclose an aromatic sulfonium salt compound, a photopolymerization initiator comprising the compound, an energy ray curable composition containing the compound, and a cured product thereof
- Patent Document 3 discloses an aromatic sulfonium salt compound.
- a photoacid generator comprising the photoacid generator and a photopolymerizable composition containing the photoacid generator are disclosed.
- these aromatic sulfonium salt compounds are not sufficiently soluble, and when used as a negative resist, in particular, fine patterning is not easy due to insufficient developability.
- an object of the present invention is to provide a photoacid generator having high developability and a resist composition using the photoacid generator.
- Another object of the present invention is to provide a cationic polymerization initiator having high curability and a cationic polymerizable composition using the cationic polymerization initiator.
- an aromatic sulfonium salt compound having a specific structure can achieve the above object, and have reached the present invention. That is, the present invention provides an aromatic sulfonium salt compound represented by the following general formula (I).
- R 1 to R 10 may be each independently substituted with a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group having 1 to 18 carbon atoms which may be substituted with a hydroxyl group, or a hydroxyl group.
- R 11 to R 14 each independently represents a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group having 1 to 18 carbon atoms that may be substituted with a hydroxyl group, or a C 1 to 18 carbon atom that may be substituted with a hydroxyl group.
- R 15 to R 19 are each independently a hydrogen atom, a hydroxyl group, a halogen atom, an alkyl group having 1 to 18 carbon atoms which may be substituted with a hydroxyl group, or a carbon atom having 1 to 12 carbon atoms which may be substituted with a hydroxyl group.
- An ⁇ represents a monovalent anion.
- At least one of R 1 to R 19 is substituted with a hydroxyl group, an ester group having 1 to 12 carbon atoms substituted with a hydroxyl group, an alkoxy group having 1 to 18 carbon atoms substituted with a hydroxyl group, and a hydroxyl group.
- a substituent selected from the group of thioalkoxy groups having 1 to 18 carbon atoms Of the R 1 ⁇ R good carbon atoms 1 be substituted with a hydroxyl represented 19 to 18 alkyl groups and R 1 ⁇ carbon atoms and optionally substituted with a hydroxyl group represented by R 19 1 ⁇ 18
- the methylene group of the thioalkoxy group having 1 to 18 carbon atoms which may be substituted with the alkoxy group and the hydroxyl group represented by R 1 to R 19 may be interrupted with —O—.
- the present invention also provides a photoacid generator comprising the above aromatic sulfonium salt compound.
- the present invention also provides a resist composition comprising the photoacid generator.
- the present invention also provides a cationic polymerization initiator comprising the above aromatic sulfonium salt compound.
- the present invention provides a cationically polymerizable composition comprising the above cationic polymerization initiator.
- the aromatic sulfonium salt compound of the present invention a photoacid generator having high developability can be obtained. Since the photoresist of the resist composition containing the photoacid generator has high sensitivity and high resolution, it is suitable for semiconductor integrated circuits sensitive to radiation such as ultraviolet rays, electron beams, and X-rays, TFT circuits for LCDs, and circuit fabrication. It is useful as a negative resist for producing a mask. Furthermore, the aromatic sulfonium salt compound of the present invention is also useful as a cationic polymerization initiator, and by using this, a cationic polymerizable composition having excellent curability can be obtained.
- the sulfonium salt compound of the present invention is a novel compound represented by the above general formula (I).
- at least one of the groups represented by R 1 to R 19 in the general formula (I) is a hydroxyl group, an ester group having 1 to 12 carbon atoms substituted with a hydroxyl group, or a hydroxyl group.
- the substituent is selected from the group consisting of a substituted alkoxy group having 1 to 18 carbon atoms and a thioalkoxy group having 1 to 18 carbon atoms substituted with a hydroxyl group.
- examples of the halogen atom represented by R 1 to R 19 include fluorine, chlorine, bromine, iodine and the like.
- examples of the alkyl group having 1 to 18 carbon atoms which may be substituted with a hydroxyl group represented by R 1 to R 19 include methyl, ethyl, propyl, isopropyl, butyl, s-butyl, t-butyl, isobutyl, amyl, Isoamyl, t-amyl, hexyl, cyclohexyl, heptyl, octyl, nonyl, ethyloctyl, 2-methoxyethyl, 3-methoxypropyl, 4-methoxybutyl, 2-butoxyethyl, methoxyethoxyethyl, methoxyethoxyethoxyethyl, 3- Methoxybutyl, 2-methylthioethyl
- ester group having 1 to 12 carbon atoms which may be substituted with a hydroxyl group represented by R 1 to R 10 and R 15 to R 19 include methoxycarbonyl, ethoxycarbonyl, isopropyloxycarbonyl, phenoxycarbonyl, acetoxy, propionyl Oxy, butyryloxy, chloroacetyloxy, dichloroacetyloxy, trichloroacetyloxy, trifluoroacetyloxy, t-butylcarbonyloxy, methoxyacetyloxy, benzoyloxy, hydroxymethylcarbonyloxy, hydroxymethoxymethylcarbonyloxy, hydroxyethoxyethylcarbonyl, 2-hydroxyethoxycarbonyl, 3-hydroxypropyloxycarbonyl, 4-hydroxyphenoxycarbonyl, 3-hydroxypropionyloxy, 4 -Hydroxybutyryloxy, 2,3-dihydroxypropylcarbonyloxy, 4-hydroxybutylcarbonyl
- Examples of the anion represented by An ⁇ in the general formula (I) include halogen anions such as chlorine anion, bromine anion, iodine anion, and fluorine anion; perchlorate anion and chlorate anion.
- Inorganic anions such as ions, thiocyanate anion, hexafluorophosphate anion, antimony hexafluoride anion, arsenic hexafluoride anion, boron tetrafluoride anion; methanesulfonate ion, fluorosulfonic acid Ion, benzenesulfonic acid anion, toluenesulfonic acid anion, 1-naphthylsulfonic acid anion, 2-naphthylsulfonic acid anion, trifluoromethanesulfonic acid anion, pentafluoroethanesulfonic acid anion, heptafluoropropanesulf
- quencher anions that have the function of de-exciting (quenching) active molecules in the excited state and ferrocenes that have an anionic group such as a carboxyl group, phosphonic acid group, or sulfonic acid group on the cyclopentadienyl ring.
- metallocene compound anions such as luteocene can be used as necessary.
- an organic sulfonate anion is preferable from the viewpoint of safety and reactivity (deprotection reaction and crosslinking reaction).
- cation moiety of the aromatic sulfonium salt compound of the present invention include the following compounds.
- aromatic sulfonium salt compounds represented by the above general formula (I) compounds in which at least one of R 11 to R 14 is a halogen atom, in particular, at least one of R 11 to R 14 is a fluorine atom.
- a compound, particularly a compound in which at least one of R 1 to R 19 is a hydroxyl group or a thioalkoxy group having 1 to 18 carbon atoms substituted with a hydroxyl group is preferred, Among these compounds, any one of R 1 to R 10 is a hydroxyl group, and any one of R 11 to R 14 is a fluorine atom; any one of R 1 to R 10 is substituted with a hydroxyl group A compound having 1 to 18 carbon atoms or
- the method for producing the aromatic sulfonium salt compound of the present invention is not particularly limited, and a method using a well-known organic synthesis reaction can be used.
- a sulfonium salt compound is obtained by sulfoniation reaction between a diaryl sulfoxide compound and 4-thiophenylbenzophenone, and a salt exchange reaction is performed using a salt compound for introducing an anionic component as necessary.
- the aromatic sulfonium salt compound of the invention can be obtained.
- the aromatic sulfonium salt compound of the present invention has activities such as EUV (Extreme Ultra-Violet), X-ray, F 2 , ArF, KrF, I-ray, H-ray, G-ray, etc. It has the property of releasing a Lewis acid when irradiated with energy rays, and can be decomposed or polymerized by acting on an acid-reactive organic substance. Therefore, the aromatic sulfonium salt compound of the present invention is useful as a photoacid generator for positive and negative photoresists or as a cationic polymerization initiator.
- the photoacid generator of the present invention comprises the aromatic sulfonium salt compound of the present invention.
- the photoacid generator of the present invention is used for polymerization of acid-reactive organic substances, cationically polymerizable compounds, cleavage of chemical bonds such as ester groups or ether groups in acrylic resins.
- the amount used is not particularly limited, but is preferably 0.00 with respect to 100 parts by mass of the acid-reactive organic substance. It is preferably used in a proportion of 05 to 100 parts by mass, more preferably 0.05 to 20 parts by mass.
- the blending amount can be increased or decreased from the above range depending on factors such as the nature of the acid-reactive organic substance, the light irradiation intensity, the time required for the reaction, the physical properties, and the cost.
- Examples of such an acid-reactive organic substance include “resin whose solubility in a developing solution is changed by the action of an acid” (hereinafter also referred to as “resist base resin”), and an optical modeling resin.
- the resist composition of the present invention is a resist composition containing the aromatic sulfonium salt compound of the present invention as an essential photoacid generator together with a resist base resin which is one of the acid-reactive organic substances.
- the resist base resin used in the resist composition of the present invention is not particularly limited, but preferably has a structure having a small absorption coefficient of the wavelength of active energy rays and high etching resistance.
- Such resist base resins include polyhydroxystyrene and derivatives thereof; polyacrylic acid and derivatives thereof; polymethacrylic acid and derivatives thereof; hydroxystyrene, acrylic acid, methacrylic acid and derivatives thereof.
- acid labile groups introduced into the high molecular weight polymer include tertiary alicyclic groups such as tertiary alkyl groups, trialkylsilyl groups, oxoalkyl groups, aryl group-substituted alkyl groups, tetrahydropyran-2-yl groups, and the like.
- acid labile groups introduced into the high molecular weight polymer include tertiary alicyclic groups such as tertiary alkyl groups, trialkylsilyl groups, oxoalkyl groups, aryl group-substituted alkyl groups, tetrahydropyran-2-yl groups, and the like.
- examples include a tertiary alkylcarbonyl group, a tertiary alkylcarbonylalkyl group, and an alkyloxycarbonyl group.
- resist base resin examples include, for example, claims 8 to 11 of JP-A No. 2003-192665, claim 3 of JP-A No. 2004-323704, JP-A No. 10-10733, and the like.
- the polystyrene-reduced weight average molecular weight (Mw) of the resist base resin by gel permeation chromatography (GPC) is usually 1,500 to 300,000, preferably 2,000 to 200,000, and more preferably 3, 000 to 100,000.
- Mw weight average molecular weight
- the Mw of the base resin is less than 1,500, the heat resistance as a resist tends to be reduced.
- it exceeds 300,000 the developability and applicability as a resist tend to be lowered.
- the photoacid generator in the resist composition of the present invention contains the aromatic sulfonium salt compound of the present invention as an essential component
- other photoacid generators may be used as optional components.
- the use amount of the photoacid generator is usually 0.01 to 20 parts by mass, preferably 0.5 to 10 parts by mass with respect to 100 parts by mass of the resist base resin, from the viewpoint of ensuring sensitivity and developability as a resist. It is. In this case, if the amount of the photoacid generator used is less than 0.01 parts by mass, the sensitivity and developability may decrease. On the other hand, if it exceeds 20 parts by mass, the transparency to radiation decreases, and the rectangular It may be difficult to obtain a resist pattern.
- Examples of the photoacid generator other than the aromatic sulfonium salt compound of the present invention include iodonium salt compounds and sulfonylimide compounds.
- the amount used is preferably 50 parts by mass or less with respect to 100 parts by mass of the aromatic sulfonium salt compound of the present invention.
- the photoacid generator comprising the aromatic sulfonium salt compound of the present invention may be used in the resist composition of the present invention by blending various additives together with other photoacid generators.
- Various additives include colorants such as inorganic fillers, organic fillers, pigments, dyes, various resin additives such as antifoaming agents, thickeners, flame retardants, antioxidants, stabilizers, leveling agents, etc. Can be mentioned.
- the use amount of these various additives is preferably 50% by mass or less in the resist composition of the present invention.
- the resist composition of the present invention is usually dissolved in a solvent so that the total solid content is usually 5 to 50% by weight, preferably 10 to 25% by weight. Adjust by filtering through a degree filter.
- the resist composition of the present invention is prepared by a method such as mixing, dissolving or kneading a photoacid generator comprising the aromatic sulfonium salt compound of the present invention, other photoacid generator, resist base resin and other optional components. can do.
- the resist composition of the present invention is particularly useful as a chemically amplified resist.
- Chemically amplified resists include negative resists that cause a chemical chain reaction by the action of the acid generated from the photoacid generator upon exposure, and are insolubilized in the developer by the cross-linking reaction or polarity change of the base resin.
- positive resists that are solubilized in the developer by the polarity change induced by the side chain deprotection reaction.
- the light source used in the exposure of the resist composition of the present invention is appropriately selected from visible light, ultraviolet light, far ultraviolet light, X-rays, charged particle beams, etc., depending on the type of photoacid generator used.
- various radiations such as deep ultraviolet rays such as KrF excimer laser (wavelength 248 nm) or ArF excimer laser (wavelength 193 nm), X-rays such as synchrotron radiation, electron beam, charged particle beams such as EUV, etc. It can be suitably used in the resist composition to be used.
- the cationic polymerizable initiator of the present invention is composed of the aromatic sulfonium salt of the present invention.
- the cationic polymerizable composition of the present invention is a composition containing the cationic polymerization initiator of the present invention and a cationic polymerizable compound, and is used for the production of flat plates, printing plates for letterpress, printed circuit boards, ICs, and LSIs. It is useful in a wide range of application fields such as photoresists, image formation such as relief images and image duplication, photocurable inks, paints, adhesives, and the like.
- the cationically polymerizable compound used in the cationically polymerizable composition of the present invention refers to a compound that undergoes a polymerization or a crosslinking reaction by a cationic polymerization initiator activated by light irradiation, and is a single type or a mixture of two or more types. Used.
- cationically polymerizable compound examples include epoxy compounds, oxetane compounds, cyclic lactone compounds, cyclic acetal compounds, cyclic thioether compounds, spiro orthoester compounds, vinyl compounds, and the like, and one or more of these are used. can do. Among them, epoxy compounds and oxetane compounds that are easy to obtain and convenient for handling are suitable.
- epoxy compounds are suitable as the epoxy compounds.
- alicyclic epoxy compound examples include cyclohexene oxide obtained by epoxidizing a polyglycidyl ether of polyhydric alcohol having at least one alicyclic ring or a cyclohexene or cyclopentene ring-containing compound with an oxidizing agent.
- a cyclopentene oxide containing compound is mentioned.
- Examples of commercially available products that can be suitably used as the alicyclic epoxy compound include UVR-6100, UVR-6105, UVR-6110, UVR-6128, UVR-6200 (manufactured by Union Carbide), Celoxide 2021, Celoxide 2021P, Celoxide 2081, Celoxide 2083, Celoxide 2085, Celoxide 2000, Celoxide 3000, Cyclomer A200, Cyclomer M100, Cyclomer M101, Epolide GT-301, Epolide GT-302, Epolide 401, Epolide 403, ETHB, Epolide HD300 (above, Daicel Chemical Industries, Ltd.), KRM-2110, KRM-2199 (above, manufactured by ADEKA Corporation), and the like.
- an epoxy resin having a cyclohexene oxide structure is preferable in terms of curability (curing speed).
- aromatic epoxy compound examples include polyhydric phenol having at least one aromatic ring, or polyglycidyl ether of an alkylene oxide adduct thereof, such as bisphenol A, bisphenol F, or further alkylene oxide. And glycidyl ethers of epoxy compounds and epoxy novolac resins.
- aliphatic epoxy compound examples include polyglycidyl ether of an aliphatic polyhydric alcohol or an alkylene oxide adduct thereof, polyglycidyl ester of an aliphatic long-chain polybasic acid, vinyl polymerization of glycidyl acrylate or glycidyl methacrylate. And a copolymer synthesized by vinyl polymerization of glycidyl acrylate or glycidyl methacrylate and other vinyl monomers.
- Typical compounds include 1,4-butanediol diglycidyl ether, 1,6-hexanediol diglycidyl ether, triglycidyl ether of glycerin, triglycidyl ether of trimethylolpropane, tetraglycidyl ether of sorbitol, dipentaerythritol
- glycidyl ethers of polyhydric alcohols such as hexaglycidyl ether, diglycidyl ether of polyethylene glycol, diglycidyl ether of polypropylene glycol, and aliphatic polyhydric alcohols such as propylene glycol, trimethylolpropane and glycerin
- Polyglycidyl ether of polyether polyol obtained by adding alkylene oxide, diglycidyl ester of aliphatic long-chain dibasic acid It is.
- monoglycidyl ethers of higher aliphatic alcohols phenols, cresols, butylphenols, polyether alcohol monoglycidyl ethers obtained by adding alkylene oxides to these, glycidyl esters of higher fatty acids, epoxidized soybean oil, epoxy Examples include octyl stearate, butyl epoxy stearate, and epoxidized polybutadiene.
- Examples of commercially available products that can be suitably used as the aromatic compound and the aliphatic epoxy compound include Epicoat 801, Epicoat 828 (above, manufactured by Yuka Shell Epoxy Co., Ltd.), PY-306, 0163, DY-022 (above, Ciba Specialty).
- oxetane compound examples include the following compounds. 3-ethyl-3-hydroxymethyloxetane, 3- (meth) allyloxymethyl-3-ethyloxetane, (3-ethyl-3-oxetanylmethoxy) methylbenzene, 4-fluoro- [1- (3-ethyl-3 -Oxetanylmethoxy) methyl] benzene, 4-methoxy- [1- (3-ethyl-3-oxetanylmethoxy) methyl] benzene, [1- (3-ethyl-3-oxetanylmethoxy) ethyl] phenyl ether, isobutoxymethyl (3-ethyl-3-oxetanylmethyl) ether, isobornyloxyethyl (3-ethyl-3-oxetanylmethyl) ether, isobornyl (3-ethyl-3-oxetanylmethyl) ether
- oxetane compounds are effective and preferable when used particularly when flexibility is required.
- the other compounds of the cationic polymerizable compound include cyclic lactone compounds such as ⁇ -propiolactone and ⁇ -caprolactone; cyclic compounds such as trioxane, 1,3-dioxolane, and 1,3,6-trioxane cyclooctane.
- the amount of the cationic polymerization initiator comprising the aromatic sulfonium salt compound of the present invention is preferably 0.01 to 10 parts by mass, more preferably 0.1 to 5 parts per 100 parts by mass of the above cationic polymerizable compound. Part by mass. If the amount used is less than 0.01 parts by mass, curing may be insufficient. On the other hand, if the amount exceeds 10 parts by mass, an increase in the effect of use is not obtained, and the physical properties of the cured product are adversely affected. May give.
- the cationic polymerization initiator composed of the aromatic sulfonium salt compound of the present invention may be used in a cationic polymerizable composition by blending various additives together with the cationic polymerizable compound.
- Various additives include organic solvents; benzotriazole-based, triazine-based, benzoate-based UV absorbers; phenol-based, phosphorus-based, sulfur-based antioxidants; cationic surfactants, anionic surfactants, nonionic surfactants Agent, ampholytic surfactant, etc .; halogen compound, phosphate ester compound, phosphate amide compound, melamine compound, fluororesin or metal oxide, (poly) melamine phosphate, (poly) Flame retardants such as piperazine phosphate; lubricants based on hydrocarbons, fatty acids, aliphatic alcohols, aliphatic esters, aliphatic amides or metal soaps; coloring agents such as dyes, pigments, carbon black;
- the cationic polymerization initiator is previously dissolved in an appropriate solvent (for example, propylene carbonate, carbitol, carbitol acetate, butyrolactone, etc.).
- an appropriate solvent for example, propylene carbonate, carbitol, carbitol acetate, butyrolactone, etc.
- the cationic polymerizable composition of the present invention can be prepared by a method such as mixing, dissolving or kneading the cationic polymerization initiator comprising the aromatic sulfonium salt compound of the present invention, the cationic polymerizable compound and other optional components.
- the cationically polymerizable composition of the present invention can be cured into a dry-to-touch state or a solvent-insoluble state usually after 0.1 seconds to several minutes by irradiation with energy rays such as ultraviolet rays.
- energy rays such as ultraviolet rays.
- Any suitable energy ray may be used as long as it induces decomposition of the cationic polymerization initiator, but preferably an ultra-high, high, medium, low-pressure mercury lamp, xenon lamp, carbon arc lamp, metal halide lamp, fluorescent lamp, From 2000 angstroms obtained from tungsten lamp, excimer lamp, germicidal lamp, excimer laser, nitrogen laser, argon ion laser, helium cadmium laser, helium neon laser, krypton ion laser, various semiconductor lasers, YAG laser, light emitting diode, CRT light source, etc.
- High energy rays such as electromagnetic energy having a wavelength of 7000 angstroms, electron
- the exposure time to energy rays depends on the strength of the energy rays, the coating thickness and the cationically polymerizable organic compound, but usually about 0.1 to 10 seconds is sufficient. However, it is preferable to take a longer irradiation time for a relatively thick coating. From 0.1 seconds to several minutes after irradiation with energy rays, most compositions are dry to the touch by cationic polymerization. However, in order to accelerate cationic polymerization, heat energy from heating or a thermal head may be used in combination. preferable.
- Examples 1-1 to 1-6 below are examples of the aromatic sulfonium salt compound No. 1 of the present invention. 1 trifluoromethanesulfonate and antimony hexafluoride, and compound no. 3 to No. 6 shows an example of production of trifluoromethanesulfonate No. 6.
- Examples 2-1 and 2-2 and Comparative Example 2-1 are compound No. 1 and no. No. 5 trifluoromethanesulfonate, and comparative compound No. 5 1 shows the evaluation for confirming the solubility of the compound in an alkali developer when 1 is blended with an alkali developable negative resist.
- Example 3 is compound No. 3, no. 4 and no. No.
- antimony hexafluoride salt was synthesized separately and these were combined with Compound No.
- Example 1-2 Compound No. 1 1. Synthesis of antimony hexafluoride salt 1 Compound No. 1 was synthesized in the same manner as in Example 1-1 except that 13.19 g (0.048 mol) of KSbF 6 was used instead of lithium trifluoromethanesulfonate. . 1 was obtained (yield 6.49 g, yield 21.3% and HPLC purity 93.2%).
- 28.00 ml of tetrachloroethane, 15.97 g (0.111 mol) of 3,4-difluoroanisole, 0.50 g of zinc chloride (3.67 ⁇ 10 ⁇ 3 mol) and 20.00 g (0.142 mol) of benzoyl chloride were added and stirred, purged with nitrogen, and heated at an internal temperature of 150 ° C. for 8 hours.
- 200 ml of toluene and 100 ml of water were mixed in a 1 L beaker, and the reaction solution was added to this and stirred.
- Step 2 Synthesis of 3-fluoro-6-methoxy-4-phenylthiobenzophenone
- a 50 ml four-necked flask 2.73 g (0.011 mol) of the compound obtained in Step 1 and dimethylformamide (DMF) 6. 00 g and 1.45 g (0.0132 mol) of thiophenol were added and stirred to replace with nitrogen.
- 1.37 g (0.0165 mol) of 48% NaOH aqueous solution was added dropwise at 20 to 25 ° C. and stirred for 1 hour.
- 40 ml of methylene chloride was added to the reaction solution, and the mixture was washed with 50 ml of water 5 times, and the solvent was distilled off from the methylene chloride layer.
- Step 4 Compound No. Synthesis of trifluoromethanesulfonate of No. 3
- the intermediate No. 3 obtained in Step 3 was added.
- 3 (4.57 g, 0.00645 mol), tetrachloroethane (13.5 g), and aluminum chloride (4.30 g, 0.0322 mol) were added and stirred, and the atmosphere was replaced with nitrogen. Further, 0.944 g (0.00646 mol) of octanethiol was added and stirred at an internal temperature of 30 ° C. for 6 hours.
- Step 2 Compound No. Synthesis of trifluoromethanesulfonate salt of No. 4 Intermediate No. 4 obtained in Step 1 was placed in a 50 ml four-necked flask. No. 4 3.40 g (5.01 ⁇ 10 ⁇ 3 mol), DMF 4.00 g and ethylene glycol 3.20 g (0.0516 mol) were added and stirred, and the atmosphere was replaced with nitrogen. A 48% aqueous NaOH solution (1.04 g, 0.0125 mol) was added dropwise and stirred for 3 hours, 30 ml of methylene chloride was added, and 60 ml of water and HCl were further added to adjust the pH to 2.
- Step 1 Synthesis of 3,4-difluoro-4′-methoxybenzophenone
- 72 g (0.14 mol) and 0.630 g (0.033 mol) of zinc chloride were added and stirred, purged with nitrogen, and stirred at 135 ° C. for 4 hours.
- 200 ml of toluene and 100 ml of water were mixed in a 1 L beaker, and the reaction solution was added thereto and stirred.
- Step 2 Synthesis of 3-fluoro-4'-methoxy-4-phenylthiobenzophenone
- 14.55 g (0.0546 mol) of the compound obtained in Step 1 DMF 30.00 g and thiophenol 7.219 g (0.0655 mol) was added and stirred, and the atmosphere was replaced with nitrogen. 48% NaOH aqueous solution 6.82g (0.0819mol) was dripped at 20-25 degreeC, and it stirred for 1 hour.
- 100 ml of methylene chloride was added to the reaction solution, washed with 100 ml of water 5 times, and the solvent was distilled off from the methylene chloride layer.
- Step 4 Compound No. Synthesis of trifluoromethanesulfonate of No. 5
- the intermediate No. 5 obtained in Step 3 was added.
- No. 5 (15.31 g, 0.0216 mol), tetrachloroethane (35.00 g) and aluminum chloride (14.12 g, 0.106 mol) were added and stirred, and the atmosphere was replaced with nitrogen. Further, 0.775 g (0.0106 mol) of octanethiol was added and stirred at an internal temperature of 30 ° C. for 10 hours.
- the compound No. obtained by the above was used. 1 trifluoromethanesulfonate and antimony hexafluoride, and compound no. 3 to No.
- the mass of the cation part (positive) / anion part (negative) of the compound was determined using TOF-MS under the following measurement conditions. The results are shown in [Table 2].
- Example 3 Preparation and evaluation of negative resist composition
- a resin solution was prepared by dissolving 100 g of Nippon Kayaku EPPN-201 in 100 g of methyl ethyl ketone (MEK). 1, compound no. 3, no. 4 and no.
- a resist solution was prepared by dissolving 0.05 g of antimony hexafluoride salt No. 5 in each case.
- Each of these resist solutions was applied onto an aluminum plate with a # 9 bar coater, dried at 80 ° C. for 10 minutes, and then exposed to 365 nm light at 65 mW / cm 2 for 9 seconds. After baking at 80 ° C. for 10 minutes, the film was immersed in MEK for 30 seconds and the state of the coating film was visually confirmed. It was confirmed that none of the coating films peeled off.
- the resist composition (cationic polymerizable composition) using the photoacid generator (cationic polymerization initiator) comprising the aromatic sulfonium salt compound of the present invention has high curability, and in particular, a negative resist. It was confirmed that it is superior as a composition.
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Abstract
Description
即ち、本発明は、下記一般式(I)で表される芳香族スルホニウム塩化合物を提供するものである。
R11~R14は、それぞれ独立に、水素原子、ハロゲン原子、水酸基、水酸基で置換されてもよい炭素原子数1~18のアルキル基、水酸基で置換されてもよい炭素原子数1~18のアルコキシ基又は水酸基で置換されてもよい炭素原子数1~18のチオアルコキシ基を表し、
R15~R19は、それぞれ独立に、水素原子、水酸基、ハロゲン原子、水酸基で置換されてもよい炭素原子数1~18のアルキル基、水酸基で置換されてもよい炭素原子数1~12のエステル基、水酸基で置換されてもよい炭素原子数1~18のアルコキシ基又は水酸基で置換されてもよい炭素原子数1~18のチオアルコキシ基を表し、
An-は、1価の陰イオンを表す。
上記R1~R19のうち少なくとも一つは、水酸基、水酸基で置換された炭素原子数1~12のエステル基、水酸基で置換された炭素原子数1~18のアルコキシ基及び水酸基で置換された炭素原子数1~18のチオアルコキシ基の群より選択される置換基であり、
上記R1~R19で表される水酸基で置換されてもよい炭素原子数1~18のアルキル基及びR1~R19で表される水酸基で置換されてもよい炭素原子数1~18のアルコキシ基及びR1~R19で表される水酸基で置換されてもよい炭素原子数1~18のチオアルコキシ基のメチレン基は、-O-で中断されていても良い。)
更に、本発明の芳香族スルホニウム塩化合物は、カチオン重合開始剤としても有用であり、これを用いることで、硬化性に優れたカチオン重合性組成物が得られる。
先ず、本発明のスルホニウム塩化合物について説明する。
本発明のスルホニウム塩化合物は、上記一般式(I)で表わされる新規な化合物である。本発明のスルホニウム塩化合物は、一般式(I)中のR1~R19で表される基のうち少なくとも一つが、水酸基、水酸基で置換された炭素原子数1~12のエステル基、水酸基で置換された炭素原子数1~18のアルコキシ基及び水酸基で置換された炭素原子数1~18のチオアルコキシの群より選択される置換基である点に特徴の一つを有している。
R1~R19で表される水酸基で置換されてもよい炭素原子数1~18のアルキル基としては、メチル、エチル、プロピル、イソプロピル、ブチル、s-ブチル、t-ブチル、イソブチル、アミル、イソアミル、t-アミル、ヘキシル、シクロヘキシル、ヘプチル、オクチル、ノニル、エチルオクチル、2-メトキシエチル、3-メトキシプロピル、4-メトキシブチル、2-ブトキシエチル、メトキシエトキシエチル、メトキシエトキシエトキシエチル、3-メトキシブチル、2-メチルチオエチル、フルオロメチル、ジフルオロメチル、トリフルオロメチル、クロロメチル、ジクロロメチル、トリクロロメチル、ブロモメチル、ジブロモメチル、トリブロモメチル、ジフルオロエチル、トリクロロエチル、ジクロロジフルオロエチル、ペンタフルオロエチル、ヘプタフルオロプロピル、ノナフルオロブチル、デカフルオロペンチル、トリデカフルオロヘキシル、ペンタデカフルオロヘプチル、ヘプタデカフルオロオクチル、メトキシメチル、1,2-エポキシエチル、メトキシエチル、メトキシエトキシメチル、メチルチオメチル、エトキシエチル、ブトキシメチル、t-ブチルチオメチル、4-ペンテニルオキシメチル、トリクロロエトキシメチル、ビス(2-クロロエトキシ)メチル、メトキシシクロヘキシル、1-(2-クロロエトキシ)エチル、1-メチル-1-メトキシエチル、エチルジチオエチル、トリメチルシリルエチル、t-ブチルジメチルシリルオキシメチル、2-(トリメチルシリル)エトキシメチル、t-ブトキシカルボニルメチル、エチルオキシカルボニルメチル、エチルカルボニルメチル、t-ブトキシカルボニルメチル、アクリロイルオキシエチル、メタクリロイルオキシエチル、2-メチル-2-アダマンチルオキシカルボニルメチル、アセチルエチル、カンファー-10-イル、2-メトキシ-1-プロペニル、ヒドロキシメチル、2-ヒドロキシエチル、1-ヒドロキシエチル、2-ヒドロキシプロピル、3-ヒドロキシプロピル、3-ヒドロキシブチル、4-ヒドロキシブチル、1,2-ジヒドロキシエチル等が挙げられ、
R1~R10及びR15~R19で表される水酸基で置換されてもよい炭素原子数1~12のエステル基としては、メトキシカルボニル、エトキシカルボニル、イソプロピルオキシカルボニル、フェノキシカルボニル、アセトキシ、プロピオニルオキシ、ブチリルオキシ、クロロアセチルオキシ、ジクロロアセチルオキシ、トリクロロアセチルオキシ、トリフルオロアセチルオキシ、t-ブチルカルボニルオキシ、メトキシアセチルオキシ、ベンゾイルオキシ、ヒドロキシメチルカルボニルオキシ、ヒドロキシメトキシメチルカルボニルオキシ、ヒドロキシエトキシエチルカルボニル、2-ヒドロキシエトキシカルボニル、3-ヒドロキシプロピルオキシカルボニル、4-ヒドロキシフェノキシカルボニル、3-ヒドロキシプロピオニルオキシ、4-ヒドロキシブチリルオキシ、2,3-ジヒドロキシプロピルカルボニルオキシ、4-ヒドロキシブチルカルボニルオキシ、3-ヒドロキシブチルカルボニルオキシ、3-ヒドロキシ-1-メチルプロピルカルボニルオキシ、5-ヒドロキシペンチルカルボニルオキシ、4-ヒドロキシペンチルカルボニルオキシ、3-ヒドロキシペンチルカルボニルオキシ、4-ヒドロキシベンゾイルオキシ等が挙げられ、
R1~R19で表される水酸基で置換されてもよい炭素原子数1~18のアルコキシ基としては、メトキシ、エトキシ、プロピルオキシ、イソプロピルオキシ、ブチルオキシ、s-ブチルオキシ、t-ブチルオキシ、イソブチルオキシ、ペンチルオキシ、イソアミルオキシ、t-アミルオキシ、ヘキシルオキシ、シクロヘキシルオキシ、シクロヘキシルメチルオキシ、テトラヒドロフラニルオキシ、テトラヒドロピラニルオキシ、2-メトキシエチルオキシ、3-メトキシプロピルオキシ、4-メトキシブチルオキシ、2-ブトキシエチルオキシ、メトキシエトキシエチルオキシ、メトキシエトキシエトキシエチルオキシ、3-メトキシブチルオキシ、2-メチルチオエチルオキシ、トリフルオロメチルオキシ、ヒドロキシメチルオキシ、1-ヒドロキシエチルオキシ、2-ヒドロキシエチルオキシ、2-ヒドロキシプロピルオキシ、3-ヒドロキシプロピルオキシ、2,3-ジヒドロキシプロピルオキシ、2-ヒドロキシ-1-メチルプロピルオキシ、2-ヒドロキシ-1-メチルエチルオキシ、2-ヒドロキシブチルオキシ、4-ヒドロキシブチルオキシ、2,3-ジヒドロキシブチルオキシ、3,4-ジヒドロキシブチルオキシ、2,3,4-トリヒドロキシブチルオキシ、2-(2-ヒドロキシエチルオキシ)エチルオキシ、2-ヒドロキシ-3-メトキシプロピルオキシ、5-ヒドロキシペンチルオキシ、2-ヒドロキシ-2-(ヒドロキシメチル)ブチルオキシ、3-ヒドロキシ-2-ジ(ヒドロキシメチル)プロピルオキシ、6-ヒドロキシヘキシルオキシ、5,6-ジヒドロキシヘキシルオキシ、2-ヒドロキシシクロヘキシルオキシ、4-ヒドロキシシクロヘキシルオキシ、2,3,4,5,6-ペンタヒドロキシシクロヘキシルオキシ、2-(2-(2-ヒドロキシエチルオキシ)エチルオキシ)エチルオキシ、4-ヒドロキシメチルシクロヘキシルメチルオキシ、2-ジ(ヒドロキシメチル)ブチルオキシ等が挙げられ、
R1~R19で表される水酸基で置換されてもよい炭素原子数1~18のチオアルコキシ基としては、メチルチオ、エチルチオ、プロピルチオ、イソプロピルチオ、ブチルチオ、s-ブチルチオ、t-ブチルチオ、イソブチルチオ、アミルチオ、イソアミルチオ、t-アミルチオ、ヘキシルチオ、シクロヘキシルチオ、アダマンチルチオ、メトキシメチルチオ、イソブチルメチルチオ、2-ヒドロキシエチルチオ、3-ヒドロキシプロピルチオ、2,3-ジヒドロキシプロピルチオ、2-ヒドロキシ-1-メチルプロピルチオ等が挙げられる。
これらの化合物の中でも、R1~R10の何れか1つが水酸基であり、R11~R14 の何れか1つがフッ素原子である化合物;R1~R10の何れか1つが水酸基で置換された炭素原子数1~18のアルコキシ基又は水酸基で置換された炭素原子数1~18のチオアルコキシ基である化合物;R11~R19の何れか1つが水酸基であり、R11~R14の何れか1つがフッ素原子である化合物が、現像性及び酸発生能が高いので更に好ましい。
200mlの四つ口フラスコに、濃硫酸72.11g(0.735モル)を仕込み、窒素置換し、内温10℃まで冷却した。ビス(ヒドロキシフェニル)スルホキシド11.24g(0.048モル)を加え、クロロベンゼン12.33gに溶解した3-フルオロ-4-フェニルチオ-ベンゾフェノン12.33g(0.04モル)を滴下し、内温30℃で3時間撹拌した。次いで、1Lのビーカーに氷水120g、メタノール120g及びトルエン120gを混合しておき、これに反応液を投入して、1時間撹拌後静置した。上層を取り除き、下層に塩化メチレン200ml及びトリフルオロメタンスルホン酸リチウム7.49g(0.048モル)を加え、1.5時間撹拌した。塩化メチレン層を水120gで3回洗浄後溶媒を留去し、得られた粗生成物をシリカゲルクロマトグラム(塩化メチレン/アセトン/メタノール=8/1/1)を用いて精製することにより、化合物No.1のトリフルオロメタンスルホン酸塩を得た(収量7.61g、収率25.0%及びHPLC純度94.4%)。
トリフルオロメタンスルホン酸リチウムに替えてKSbF6の13.19g(0.048モル)を用いた以外は実施例1-1と同様にして合成することにより、化合物No.1の六フッ化アンチモン塩を得た(収量6.49g、収率21.3%及びHPLC純度93.2%)。
200ml四つ口フラスコに、テトラクロロエタン28.00ml、3,4-ジフルオロアニソール15.97g(0.111モル)、塩化亜鉛0.50g(3.67×10-3モル)及びベンゾイルクロライド20.00g(0.142モル)を投入して撹拌し、窒素置換し、内温150℃で8時間加熱した。次いで、1Lビーカーにトルエン200ml及び水100mlを混合しておき、これに反応液を投入し撹拌した。トルエン層に水50mlを加え、NaOHでpH=10とし、更に水50mlで4回水洗した。トルエン層を濃縮し、ヘキサン20mlを加えると結晶が析出した。これをろ別し乾燥することにより、3,4-ジフルオロ-6-メトキシベンゾフェノンを得た(収量9.00g、収率32.7%及びHPLC純度98.1%)。
50ml四つ口フラスコに、ステップ1で得られた化合物2.73g(0.011モル)、ジメチルホルムアミド(DMF)6.00g及びチオフェノール1.45g(0.0132モル)を投入して撹拌し、窒素置換した。48%NaOH水溶液1.37g(0.0165モル)を20~25℃で滴下し、1時間撹拌した。反応液に塩化メチレン40mlを加え、水50mlで5回水洗し、塩化メチレン層から溶媒を留去した。トルエン1.0mlに溶解し、ヘキサン5.0mlを加えると結晶が析出した。これをろ別、乾燥することにより、3-フルオロ-6-メトキシ-4-フェニルチオベンゾフェノンを得た(収量3.22g、収率86.6%、及びHPLC純度98.9%)。
50ml四つ口フラスコに、濃硫酸16.87gを仕込み、窒素置換して、内温10℃まで冷却した。クロロベンゼン2.68gに溶解したビス(フルオロフェニル)スルホキシド2.68g(0.0112モル)を滴下し、更にクロロベンゼン6.20gにステップ2で得られた化合物3.17g(0.00936モル)を溶解したものを滴下し、35℃で2.5時間撹拌した。次に、500mlビーカーにトルエン40ml及びメタノール40ml、水40mlを混合しておき、これに反応液を投入して1時間撹拌した。上層を取り除き、下層に塩化メチレン50ml及びトリフルオロメタンスルホン酸リチウム1.752g(0.0112モル)を加え、1時間撹拌した。塩化メチレン層を水50mlで4回水洗し、溶媒を留去することにより、中間体No.3を得た(収量5.52g、収率83.2%、及びHPLC純度82.1%)。
50ml四つ口フラスコに、ステップ3で得られた中間体No.3の4.57g(0.00645モル)、テトラクロロエタン13.5g及び塩化アルミニウム4.30g(0.0322モル)を投入して撹拌し、窒素置換した。更にオクタンチオール0.944g(0.00646モル)を添加し、内温30℃で6時間撹拌した。次に、500mlビーカーに塩化メチレン200ml及び水50mlを混合しておき、これに反応液を投入して1時間撹拌した。上層を取り除き、塩化メチレン層に水50ml及びNaOH水溶液を加えてpH=7~8とし、塩化メチレン層を水50mlで3回水洗し濃縮した。得られた粗生成物を、シリカゲルクロマトグラム(塩化メチレン/アセトン=7/3)を用いて精製することにより、化合物No.3のトリフルオロメタンスルホン酸塩を得た(収量2.32g、収率51.8%、及びHPLC純度93.2%)。
200mlの四つ口フラスコに、濃硫酸99.06g(1.01モル)を仕込み、窒素置換し、内温10℃まで冷却した。クロロベンゼン16.38gに溶解したビス(フルオロフェニル)スルホキシド16.38g(0.0688モル)を滴下し、更にクロロベンゼン33.00gに溶解させた3-フルオロ-4-フェニルチオ-ベンゾフェノン16.96g(0.055モル)を滴下し、内温30℃で3時間撹拌した。次いで、1Lのビーカーに氷水120g、メタノール120g、及びトルエン120gを混合しておき、これに反応液を投入して、1時間撹拌後静置した。上層を取り除き、下層に塩化メチレン200ml及びトリフルオロメタンスルホン酸リチウム10.73g(0.0688モル)を加えて1時間撹拌した。塩化メチレン層を水120gで3回洗浄後、溶媒を留去し、得られた粗生成物を、シリカゲルクロマトグラム(塩化メチレン/アセトン/メタノール=8/1/1)を用いて精製することにより、中間体No.4を得た(収量23.74g、収率63.6%、及びHPLC純度96.9%)。
50ml四つ口フラスコに、ステップ1で得られた中間体No.4の3.40g(5.01×10-3モル)、DMF4.00g及びエチレングリコール3.20g(0.0516モル)を投入して撹拌し、窒素置換した。48%NaOH水溶液1.04g(0.0125モル)を滴下し、3時間撹拌した後、塩化メチレン30mlを加え、更に水60ml及びHClを加え、pH=2とした。塩化メチレン層を水60mlで3回水洗し、溶媒を留去し、得られた粗生成物を、シリカゲルクロマトグラム(塩化メチレン/アセトン/メタノール=6/3/1)を用いて精製することにより、化合物No.4のトリフルオロメタンスルホン酸塩を得た(収量1.81g、収率47.4%及びHPLC純度94.6%)。
100ml四つ口フラスコに、アニソール16.65g(0.154モル)、テトラクロロエタン35.0g、3,4-ジフルオロベンゾイルクロライド24.72g(0.14モル)及び塩化亜鉛0.630g(0.033モル)を投入して撹拌し、窒素置換し、135℃で4時間撹拌した。次に、1Lビーカーにトルエン200ml及び水100mlを混合しておき、これに反応液を投入して撹拌した。トルエン層に水100mlを加え、NaOHでpH=10とし、更に水100mlで4回水洗した。トルエン層を濃縮し、ヘキサン100mlを加えると結晶が析出した。これをろ別、乾燥することにより、3,4-ジフルオロ-4’-メトキシベンゾフェノンを得た(収量13.63g、収率39.2%及びHPLC純度97.8%)。
200ml四つ口フラスコに、ステップ1で得られた化合物13.55g(0.0546モル)、DMF30.00g及びチオフェノール7.219g(0.0655モル)を投入して撹拌し、窒素置換した。48%NaOH水溶液6.82g(0.0819モル)を20~25℃で滴下し、1時間撹拌した。反応液に塩化メチレン100mlを加え、水100mlで5回水洗し、塩化メチレン層から溶媒を留去した。トルエン6.0mlに溶解し、ヘキサン50mlを加えると結晶が析出した。これをろ別、乾燥することにより、3-フルオロ-4’-メトキシ-4-フェニルチオベンゾフェノンを得た(収量16.60g、収率89.8%、及びHPLC純度99.6%)。
200ml四つ口フラスコに、濃硫酸87.43gを仕込み、窒素置換し、内温10℃まで冷却した。クロロベンゼン13.87gに溶解したビス(フルオロフェニル)スルホキシド13.87g(0.0582モル)を滴下し、更にクロロベンゼン32.82gにステップ2で得られた化合物16.41g(0.0485モル)を溶解させたものを滴下して、35℃で2.5時間撹拌した。次に、1Lビーカーにトルエン200ml、メタノール150ml及び水200mlを混合しておき、これに反応液を投入して、1時間撹拌した。上層を取り除き、下層に塩化メチレン150ml及びトリフルオロメタンスルホン酸リチウム9.08g(0.0582モル)を加え、1時間撹拌した。塩化メチレン層を水200mlで4回水洗し、溶媒を留去することにより、中間体No.5を得た(収量34.25g、収率99.7%、及びHPLC純度93.8%)。
50ml四つ口フラスコに、ステップ3で得られた中間体No.5の15.31g(0.0216モル)、テトラクロロエタン35.00g及び塩化アルミニウム14.12g(0.106モル)を投入して撹拌し、窒素置換した。更にオクタンチオール0.775g(0.0106モル)を添加し、内温30℃で10時間撹拌した。次に、500mlビーカーに塩化メチレン80ml及び水80mlを混合しておき、これに反応液を投入して1時間撹拌した。上層を取り除き、塩化メチレン層に水70ml及びNaOH水溶液を加えpH=7~8とし、塩化メチレン層を水80mlで3回水洗後濃縮し、得られた粗生成物を、シリカゲルクロマトグラム(塩化メチレン/アセトン=7/3)を用いて精製することにより、化合物No.5のトリフルオロメタンスルホン酸塩を得た(収量4.79g、収率31.9%、及びHPLC純度97.3%)。
50ml四つ口フラスコに、中間体No.4の3.40g(5.01×10-3モル)及びDMF8.00gを入れ攪拌、溶解した。更にK2CO31.73g(0.0125モル)を加えて攪拌し、窒素置換し、2-メルカプトエタノール0.978g(0.0125モル)を滴下後、室温で2時間攪拌した。反応液を塩化メチレン30mlに加え、更に水60mlを加え、塩化メチレン層を水60mlで4回水洗し、溶媒を留去して、得られた粗生成物を、シリカゲルクロマトグラム(塩化メチレン/アセトン/メタノール=6/3/1)を用いて精製することにより、化合物No.6のトリフルオロメタンスルホン酸塩を得た(収量2.11g、収率53.0%、及びHPLC純度92.9%)。
<測定条件>
装置名:Voyager-DE STR
Matrix:Dithranol(mw:226.2)
Instrument Mode:Reflector
Positive測定及びNegative測定
尚、測定する試料及びMatrixは、何れもTHF1%溶液とし、該試料溶液:Matrix溶液=2μl:20μlとして調製した。
スクリュー管に、ポリビニルフェノール(丸善石油化学製S-2P、Mw5800)0.36g及び3%TMAH水溶液10.00gを量りとり加熱、溶解した。別のスクリュー管に、この溶液2.00gと、化合物No.1及びNo.5のトリフルオロメタンスルホン酸塩、並びに比較化合物No.1(実施例1-4のステップ1で得られた中間体No.4)とをそれぞれ少量ずつ量りとり加熱し、溶解するか否かを目視で確認するという操作を繰り返し、飽和する濃度を確認した。飽和する濃度を確認した後、飽和溶液を一昼夜静置し、飽和溶液から固体が析出していないことを確認した。このときのポリビニルフェノールに対する各化合物の重量比を溶解度とし、算出した。結果を[表3]に示す。
実施例1-2と同様にして、化合物No.3、No.4及びNo.5の六フッ化アンチモン塩を別途合成した。日本化薬製EPPN-201の100gをメチルエチルケトン(MEK)100gに溶解させることにより樹脂溶液を調製し、この樹脂溶液8.00gに、化合物No.1、化合物No.3、No.4及びNo.5の六フッ化アンチモン塩の0.05gをそれぞれ溶解させてレジスト液を調製した。これらのレジスト液をそれぞれアルミ板上に#9のバーコーターで塗布し、80℃で10分乾燥した後、365nmの光を65mW/cm2で9秒間露光した。80℃で10分間ベークした後、MEKに30秒間浸漬し、塗膜の状態を目視により確認したところ、何れの塗膜にも、はがれがないことが確認された。
Claims (9)
- 下記一般式(I)で表されることを特徴とする芳香族スルホニウム塩化合物。
R11~R14は、それぞれ独立に、水素原子、ハロゲン原子、水酸基、水酸基で置換されてもよい炭素原子数1~18のアルキル基、水酸基で置換されてもよい炭素原子数1~18のアルコキシ基又は水酸基で置換されてもよい炭素原子数1~18のチオアルコキシ基を表し、
R15~R19は、それぞれ独立に、水素原子、水酸基、ハロゲン原子、水酸基で置換されてもよい炭素原子数1~18のアルキル基、水酸基で置換されてもよい炭素原子数1~12のエステル基、水酸基で置換されてもよい炭素原子数1~18のアルコキシ基又は水酸基で置換されてもよい炭素原子数1~18のチオアルコキシ基を表し、
An-は、1価の陰イオンを表す。
上記R1~R19のうち少なくとも一つは、水酸基、水酸基で置換された炭素原子数1~12のエステル基、水酸基で置換された炭素原子数1~18のアルコキシ基及び水酸基で置換された炭素原子数1~18のチオアルコキシ基の群より選択される置換基であり、
上記R1~R19で表される水酸基で置換されてもよい炭素原子数1~18のアルキル基、R1~R19で表される水酸基で置換されてもよい炭素原子数1~18のアルコキシ基及びR1~R19で表される水酸基で置換されてもよい炭素原子数1~18のチオアルコキシ基のメチレン基は、-O-で中断されていても良い。) - 上記一般式(I)中、R11~R14のうち少なくとも一つが、ハロゲン原子である請求項1記載の芳香族スルホニウム塩化合物。
- 上記一般式(I)中、R11~R14のうち少なくとも一つが、フッ素原子である請求項1又は2記載の芳香族スルホニウム塩化合物。
- 上記一般式(I)中、R1~R19のうち少なくとも一つが、水酸基、水酸基で置換された炭素原子数1~18のアルコキシ基又は水酸基で置換された炭素原子数1~18のチオアルコキシ基である請求項2又は3記載の芳香族スルホニウム塩化合物。
- 上記一般式(I)中、R1~R19のうち少なくとも一つが、水酸基又は水酸基で置換された炭素原子数1~18のチオアルコキシ基である請求項4記載の芳香族スルホニウム塩化合物。
- 請求項1~5の何れかに記載の芳香族スルホニウム塩化合物からなることを特徴とする光酸発生剤。
- 請求項6記載の光酸発生剤を含有してなることを特徴とするレジスト組成物。
- 請求項1~5の何れかに記載の芳香族スルホニウム塩化合物からなることを特徴とするカチオン重合開始剤。
- 請求項8記載のカチオン重合開始剤を含有してなることを特徴とするカチオン重合性組成物。
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JP2013043864A (ja) * | 2011-08-25 | 2013-03-04 | San Apro Kk | スルホニウム塩、光酸発生剤、硬化性組成物およびレジスト組成物 |
JP2014070020A (ja) * | 2012-09-27 | 2014-04-21 | Sumitomo Seika Chem Co Ltd | トリアリールスルホニウム塩の製造方法 |
JP2015168617A (ja) * | 2014-03-04 | 2015-09-28 | 株式会社Adeka | 芳香族スルホニウム塩化合物、光酸発生剤、レジスト組成物、カチオン重合開始剤、およびカチオン重合性組成物 |
WO2016147356A1 (ja) * | 2015-03-18 | 2016-09-22 | 株式会社Adeka | 芳香族スルホニウム塩化合物、光酸発生剤、レジスト組成物、カチオン重合開始剤、およびカチオン重合性組成物 |
JP2019085396A (ja) * | 2017-11-09 | 2019-06-06 | 住友化学株式会社 | 塩、酸発生剤、レジスト組成物及びレジストパターンの製造方法 |
WO2023053977A1 (ja) * | 2021-09-28 | 2023-04-06 | 富士フイルム株式会社 | 塩の製造方法、感活性光線性又は感放射線性樹脂組成物の製造方法、パターン形成方法、及び電子デバイスの製造方法 |
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Also Published As
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TW201129531A (en) | 2011-09-01 |
EP2495234A1 (en) | 2012-09-05 |
EP2495234A4 (en) | 2015-06-24 |
TWI526423B (zh) | 2016-03-21 |
JPWO2011052327A1 (ja) | 2013-03-21 |
US20120130117A1 (en) | 2012-05-24 |
KR20130028891A (ko) | 2013-03-20 |
CN102471255A (zh) | 2012-05-23 |
EP2495234B1 (en) | 2018-06-06 |
JP5635526B2 (ja) | 2014-12-03 |
CN102471255B (zh) | 2015-06-03 |
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