WO2016114000A1 - レジスト永久膜用硬化性組成物及びレジスト永久膜 - Google Patents
レジスト永久膜用硬化性組成物及びレジスト永久膜 Download PDFInfo
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- WO2016114000A1 WO2016114000A1 PCT/JP2015/082512 JP2015082512W WO2016114000A1 WO 2016114000 A1 WO2016114000 A1 WO 2016114000A1 JP 2015082512 W JP2015082512 W JP 2015082512W WO 2016114000 A1 WO2016114000 A1 WO 2016114000A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
- C08G8/04—Condensation polymers of aldehydes or ketones with phenols only of aldehydes
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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- 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
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- C07C39/12—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings
- C07C39/14—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings with at least one hydroxy group on a condensed ring system containing two rings
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- C07C39/12—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings
- C07C39/17—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings containing other rings in addition to the six-membered aromatic rings, e.g. cyclohexylphenol
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
- C09D161/12—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols with polyhydric phenols
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- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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- 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
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- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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- 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
- G03F7/008—Azides
- G03F7/012—Macromolecular azides; Macromolecular additives, e.g. binders
- G03F7/0125—Macromolecular azides; Macromolecular additives, e.g. binders characterised by the polymeric binder or the macromolecular additives other than the macromolecular azides
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- 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
- G03F7/022—Quinonediazides
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- 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
- G03F7/022—Quinonediazides
- G03F7/0226—Quinonediazides characterised by the non-macromolecular additives
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- 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
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
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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
- G03F7/039—Macromolecular compounds which are photodegradable, e.g. positive electron resists
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2603/00—Systems containing at least three condensed rings
- C07C2603/92—Systems containing at least three condensed rings with a condensed ring system consisting of at least two mutually uncondensed aromatic ring systems, linked by an annular structure formed by carbon chains on non-adjacent positions of the aromatic system, e.g. cyclophanes
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- 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
- G03F7/16—Coating processes; Apparatus therefor
- G03F7/162—Coating on a rotating support, e.g. using a whirler or a spinner
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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- 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
- G03F7/16—Coating processes; Apparatus therefor
- G03F7/168—Finishing the coated layer, e.g. drying, baking, soaking
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- G—PHYSICS
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- 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
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
- G03F7/2004—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image characterised by the use of a particular light source, e.g. fluorescent lamps or deep UV light
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- 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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
- G03F7/32—Liquid compositions therefor, e.g. developers
- G03F7/322—Aqueous alkaline compositions
Definitions
- the present invention relates to a curable composition that is excellent in solubility in a solvent and that is excellent in alkali developability, heat decomposability, photosensitivity and resolution, and particularly suitable for obtaining a resist permanent film. Moreover, this invention relates to the resist permanent film obtained using the said curable composition.
- the phenolic hydroxyl group-containing compound is used in adhesives, molding materials, paints, photoresist materials, epoxy resin raw materials, epoxy resin curing agents, etc., it is excellent in heat resistance and moisture resistance in cured products, It is widely used in the electric and electronic fields as a curable resin composition mainly comprising a phenolic hydroxyl group-containing compound itself.
- examples of the use of the curable composition include a permanent film.
- the permanent film is formed by forming a photosensitive resin film on or between components constituting a product of a display device such as a semiconductor device such as an IC or LSI or a thin display, and remains even after the product is completed. Is mentioned.
- Specific examples of the permanent film include, for semiconductor devices, a solder resist, a package material, an underfill material, a package adhesive layer such as a circuit element, an adhesive layer between an integrated circuit element and a circuit board, and the like.
- a thin film transistor protective film there are a thin film transistor protective film, a liquid crystal color filter protective film, a black matrix, a spacer, and the like.
- the composition When the curable composition is used for permanent film formation, the composition is required to be excellent in solvent solubility, and the resulting coating film is excellent in alkali developability, thermal decomposition resistance, photosensitivity and resolution. Is required.
- a composition for obtaining the permanent film for example, a composition containing a novolak type phenol resin obtained by polymerizing a compound having a phenolic hydroxyl group such as phenol or naphthol and an aldehyde is known (for example, (See Patent Document 1).
- the coating film obtained using the composition disclosed in Patent Document 1 has insufficient alkali developability, sensitivity and resolution.
- a composition for obtaining a permanent film for example, a composition having a phenolic hydroxyl group-containing compound having a cylindrical structure called a calixarene structure is known.
- a phenolic hydroxyl group-containing compound specifically, for example, a naphthol-type calixarene compound obtained by reacting ⁇ -naphthol and formaldehyde with an alkaline earth metal hydroxide as a catalyst is known (for example, , See Patent Document 2).
- the naphthol-type calixarene compound disclosed in Patent Document 2 has insufficient solubility in an organic solvent, and it has been difficult to prepare a composition for obtaining a permanent film.
- the problem to be solved by the present invention is to obtain a coating film excellent in solubility in a solvent and excellent in alkali developability, heat decomposability, photosensitivity and resolution, particularly for obtaining a resist permanent film.
- An object of the present invention is to provide a suitable curable composition and a resist permanent film obtained using the composition.
- the dihydroxynaphthalene-type calixarene compound has extremely high heat resistance and excellent solubility in general-purpose solvents.
- the present invention has been found to be excellent in heat resistance, photosensitivity, resolution, and that a composition containing the compound and a photosensitizer or curing agent is suitable as a composition for forming a resist permanent film. It came.
- R 1 is a hydrogen atom, an alkyl group or an aryl group, and n is an integer of 2 to 10.
- R 2 is any one of an alkyl group, an alkoxy group, an aryl group, an aralkyl group and a halogen atom.
- M is an integer from 0 to 4.
- m is 2 or more, the plurality of R 2 may be the same or different from each other, and may be bonded to either of the two aromatic rings of the naphthylene skeleton.
- a curable composition for a resist permanent film comprising a phenolic hydroxyl group-containing compound (A) having a molecular structure represented by formula (A) and a photosensitizer (B1) or a curing agent (B2). It is.
- the present invention also provides a resist permanent film obtained by curing the curable composition for a resist permanent film.
- a curable composition that is excellent in solubility in a solvent and that is excellent in alkali developability, thermal decomposition resistance, photosensitivity, and resolution, particularly suitable for obtaining a resist permanent film. And the resist permanent film obtained using this curable composition can be provided.
- FIG. 1 is a GPC chart of the phenolic hydroxyl group-containing compound (A1) obtained in Synthesis Example 1.
- FIG. FIG. 2 is a 1H-NMR chart of the phenolic hydroxyl group-containing compound (A1) obtained in Synthesis Example 1.
- FIG. 3 is an IR chart of the phenolic hydroxyl group-containing compound (A1) obtained in Synthesis Example 1.
- FIG. 4 is an FD-MS chart of the phenolic hydroxyl group-containing compound (A1) obtained in Synthesis Example 1.
- FIG. 5 is a GPC chart of the phenolic hydroxyl group-containing compound (A2) obtained in Synthesis Example 2.
- FIG. 6 is a 1H-NMR chart of the phenolic hydroxyl group-containing compound (A2) obtained in Synthesis Example 2.
- FIG. 7 is an IR chart of the phenolic hydroxyl group-containing compound (A2) obtained in Synthesis Example 2.
- FIG. 8 is an FD-MS chart of the phenolic hydroxyl group-containing compound (
- the curable composition for a permanent resist film of the present invention is characterized by containing a phenolic hydroxyl group-containing compound (A) and a photosensitizing agent (B1) or a curing agent (B2).
- the phenolic hydroxyl group-containing compound (A) has the following structural formula (1):
- R 1 is a hydrogen atom, an alkyl group or an aryl group, and n is an integer of 2 to 10.
- R 2 is any one of an alkyl group, an alkoxy group, an aryl group, an aralkyl group and a halogen atom.
- M is an integer from 0 to 4.
- m is 2 or more, the plurality of R 2 may be the same or different from each other, and may be bonded to either of the two aromatic rings of the naphthylene skeleton. good.
- It has a molecular structure represented by
- the conventionally known calixarene type compounds were not sufficiently compatible with general-purpose organic solvents, other resin components, additives and the like.
- the phenolic hydroxyl group-containing compound represented by the structural formula (1) is a compound having a high functional group concentration having two hydroxyl groups on the naphthylene skeleton in the structural formula (1). While maintaining the high heat resistance characteristic of the mold structure, it also has excellent compatibility with general-purpose organic solvents, other resin components, additives and the like.
- Such a phenolic hydroxyl group-containing compound (A) is excellent in photosensitivity and resolution when used in a photosensitive material, and is excellent in both alkali resistance before exposure and alkali solubility after exposure.
- a resist permanent film with high photosensitivity can be formed.
- the phenolic hydroxyl group-containing compound (A) represented by the structural formula (1) has a calixarene structure including a plurality of naphthalene ring structures, so that it is rich in rigidity and excellent in thermal decomposition resistance. Is obtained.
- n represents the number of repeating units and is an integer of 2 to 10. Especially, since it becomes a phenolic hydroxyl group containing compound which is excellent in structural stability and excellent in thermal decomposition resistance, it is preferably any of 2, 3, 4, 5, 6, 8 and particularly preferably 4.
- the substitution position of the two hydroxyl groups on the naphthylene skeleton may be either of the two aromatic rings of the naphthylene skeleton.
- the substitution position of the two hydroxyl groups on the naphthylene skeleton is easy to obtain the raw material, so it can be any of the 1, 4-position, 1, 5-position, 1, 6-position, 2, 6-position, and 2, 7-position. It is preferable that the position is 1 and 6 because production is easy. That is, the phenolic hydroxyl group-containing compound (A) has the following structural formula (1-1)
- R 1 is a hydrogen atom, an alkyl group or an aryl group, and n is an integer of 2 to 10.
- R 2 is any one of an alkyl group, an alkoxy group, an aryl group, an aralkyl group and a halogen atom.
- M is an integer from 0 to 4.
- m is 2 or more, the plurality of R 2 may be the same or different from each other, and may be bonded to either of the two aromatic rings of the naphthylene skeleton. good.
- R 1 in the structural formula (1) is a hydrogen atom, an alkyl group or an aryl group, and examples of the alkyl group include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a cyclohexyl group, and the like. Is mentioned.
- the aryl group the following structural formula (2-1) or (2-2)
- R 3 and R 4 are each independently a hydroxyl group, a halogen atom, an alkyl group, an alkoxy group, an aryl group or an aralkyl group, k is an integer of 0 to 5, and l is an integer of 7 to 7)
- k or l is 2 or more, the plurality of R 3 or R 4 may be the same or different.
- a phenyl group a hydroxyphenyl group, a dihydroxyphenyl group, a hydroxyalkoxyphenyl group, an alkoxyphenyl group, a tolyl group, a xylyl group, a naphthyl group, a hydroxynaphthyl group, a dihydroxynaphthyl group.
- a phenyl group a hydroxyphenyl group, a dihydroxyphenyl group, a hydroxyalkoxyphenyl group, an alkoxyphenyl group, a tolyl group, a xylyl group, a naphthyl group, a hydroxynaphthyl group, a dihydroxynaphthyl group.
- an aryl group is preferable, and a hydroxyphenyl group, a dihydroxyphenyl group, a hydroxyalkoxyphenyl group. More preferred are hydroxyl-containing structural sites such as hydroxy naphthyl group and dihydroxy naphthyl group.
- R 2 in the structural formula (1) is any one of an alkyl group, an alkoxy group, an aryl group, an aralkyl group, and a halogen atom
- the alkyl group includes a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group
- the alkoxy group include a methoxy group, an ethoxy group, a propyloxy group, a butoxy group, a pentyloxy group, a hexyloxy group, and a cyclohexyloxy group.
- aryl group examples include a phenyl group, a hydroxyphenyl group, a dihydroxyphenyl group, a hydroxyalkoxyphenyl group, an alkoxyphenyl group, a tolyl group, a xylyl group, a naphthyl group, a hydroxynaphthyl group, and a dihydroxynaphthyl group, and an aralkyl group.
- phenylmethyl group hydroxyphenylmethyl group, dihydroxyphenylmethyl group, tolylmethyl group, xylylmethyl group, naphthylmethyl group, hydroxynaphthylmethyl group, dihydroxynaphthylmethyl group, phenylethyl group, hydroxyphenylethyl group, dihydroxyphenylethyl group
- examples include tolylethyl group, xylylethyl group, naphthylethyl group, hydroxynaphthylethyl group, dihydroxynaphthylethyl group and the like.
- the value of m in the structural formula (1) is preferably 0 because it becomes a curable composition from which a resist permanent film having excellent thermal decomposition resistance can be obtained.
- Examples of the phenolic hydroxyl group-containing compound (A) include a method of reacting a dihydroxynaphthalene compound and formaldehyde in the presence of a basic catalyst (Method 1), a dihydroxynaphthalene compound, and two or more carbon atoms. It can manufacture by the method (method 2) with which the aliphatic aldehyde compound or aromatic aldehyde compound of this is made to react in presence of an acidic catalyst.
- Method 2 the method of the phenolic hydroxyl group-containing compound is produced by such a method, the phenolic hydroxyl group-containing compound (A) used in the present invention is selectively produced or other components are contained by appropriately changing the reaction conditions. Or can be produced as a phenolic resin composition. Moreover, you may isolate and use the said phenolic hydroxyl-containing compound (A) from the phenol resin composition containing another component.
- dihydroxynaphthalene compound used in Method 1 examples include 1,4-dihydroxynaphthalene, 1,5-dihydroxynaphthalene, 1,6-dihydroxynaphthalene, 2,6-dihydroxynaphthalene, 2,7-dihydroxynaphthalene, and dihydroxy naphthalene.
- alkyl group such as methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, cyclohexyl group, methoxy group, ethoxy group, propyloxy group, butoxy group, pentyloxy
- alkoxy groups such as a group, hexyloxy group, and cyclohexyloxy group are substituted.
- 1,6-dihydroxynaphthalene and a compound in which one or more alkyl groups or aralkyl groups are substituted on the aromatic nucleus are preferable because the phenolic hydroxyl group-containing compound is efficiently generated. More preferred is 6-dihydroxynaphthalene.
- the formaldehyde used in the method 1 may be used in the form of either formalin in a solution state or paraformaldehyde in a solid state.
- the reaction ratio between the dihydroxynaphthalene compound and formaldehyde is such that the phenolic hydroxyl group-containing compound (A) is efficiently produced, so that the molar ratio of both ((dihydroxynaphthalene compound) / (formaldehyde)] is 1.0 to A range of 0.1 is preferable.
- Examples of the basic catalyst used in Method 1 include alkali metal hydroxides such as sodium hydroxide, lithium hydroxide, and potassium hydroxide, and alkaline earth metal hydroxides such as calcium hydroxide. . Among these, alkali metal hydroxides are preferable because of higher catalytic ability, and sodium hydroxide is more preferable.
- the amount of these basic catalysts used is preferably in the range of 0.02 to 1.00 mol with respect to 1 mol of the dihydroxynaphthalene compound.
- the temperature condition for reacting the dihydroxynaphthalene compound and formaldehyde is preferably in the range of 60 to 90 ° C. because the phenolic hydroxyl group-containing compound is efficiently produced.
- the reaction between the dihydroxynaphthalene compound and formaldehyde may be performed in an organic solvent as necessary.
- the organic solvent used here is alcohol solvent such as propanol, butanol, ethylene glycol, glycerin, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, butyl acetate, ethylene glycol monomethyl ether acetate, Examples include ester solvents such as ethylene glycol monoethyl ether acetate and propylene glycol monomethyl ether acetate.
- the system After completion of the reaction between the dihydroxynaphthalene compound and formaldehyde, the system is neutralized by adding an acidic compound to the system, and then cooled, the crystals of the composition are separated by filtration, and further washed with water and dried.
- a phenol resin composition containing a hydroxyl group-containing compound is obtained. Further, the phenolic hydroxyl group-containing compound can be obtained with a higher purity by a method of re-dissolving the obtained phenol resin in the alcohol solvent or the like and then dropping it into water to cause reprecipitation.
- the method 2 will be described.
- Examples of the dihydroxynaphthalene compound used in Method 2 include a dihydroxynaphthalene compound that can be used in Production Method 1. These may be used alone or in combination of two or more.
- dihydroxynaphthalene compounds a compound in which two or more alkyl groups or aralkyl groups are substituted on 1,6-dihydroxynaphthalene and its aromatic nucleus is preferable because the phenolic hydroxyl group-containing compound is efficiently formed. More preferred is 6,6-dihydroxynaphthalene.
- the aliphatic aldehyde compound or aromatic aldehyde compound having two or more carbon atoms used in Method 2 is, for example, the following structural formulas (3-1) to (3-3):
- R 5 is a hydrocarbon group having 1 to 6 carbon atoms, or one or more carbon atoms in the hydrocarbon group are substituted with any one of a hydroxyl group, an alkoxy group, an aryl group, and a halogen atom.
- R 6 and R 7 are each independently a hydroxyl group, an alkyl group, an alkoxy group, an aryl group, an aralkyl group, or a halogen atom
- p is an integer from 0 to 5
- q is an integer from 0 to 7
- the plurality of R 4 or R 5 may be the same or different. Or a compound represented by any of the above.
- Examples of the aliphatic aldehyde compound represented by the structural formula (3-1) include acetaldehyde, propyl aldehyde, butyraldehyde, isobutyraldehyde, pentyl aldehyde, hexyl aldehyde, and the like.
- the aromatic aldehyde compound represented by the structural formula (3-2) or (3-3) includes, for example, salicylaldehyde, 3-hydroxybenzaldehyde, 4-hydroxybenzaldehyde, 2-hydroxy-4-methylbenzaldehyde, Hydroxybenzaldehyde compounds such as 2,4-dihydroxybenzaldehyde and 3,4-dihydroxybenzaldehyde; 2-hydroxy-3-methoxybenzaldehyde, 3-hydroxy-4-methoxybenzaldehyde, 4-hydroxy-3-methoxybenzaldehyde, 3-ethoxy- Benzaldehyde compounds having both a hydroxy group and an alkoxy group such as 4-hydroxybenzaldehyde and 4-hydroxy-3,5-dimethoxybenzaldehyde; methoxybenzaldehyde, ethoxybenzen Alkoxy benzaldehyde compounds such aldehydes; 1-hydroxy-2-naphthaldehyde, 2-hydroxy-1-naphthalde, 2-hydroxy
- the structural formula (3-2) or ( 3-3) is preferred, and a compound having one or more hydroxyl groups as substituents on the aromatic ring, that is, p or p in the structural formula (3-3) or (3-3).
- a compound in which q is 1 or more and at least one of R 6 or R 7 is a hydroxyl group is more preferable.
- a hydroxybenzaldehyde compound represented by the structural formula (3-2), wherein p is 1 or more and at least one of R6 is a hydroxyl group is preferable because the phenolic hydroxyl group-containing compound is efficiently generated.
- -Hydroxy-3-methoxybenzaldehyde, 3-ethoxy-4-hydroxybenzaldehyde, salicylaldehyde, 3-hydroxybenzaldehyde, 4-hydroxybenzaldehyde, 2,4-dihydroxybenzaldehyde are more preferable, and salicylaldehyde, 3-hydroxybenzaldehyde 4-hydroxybenzaldehyde is more preferable, and 4-hydroxybenzaldehyde or salicylaldehyde is still more preferable.
- the reaction ratio between the dihydroxynaphthalene compound and the aldehyde compound is such that the phenolic hydroxyl group-containing compound is efficiently produced, so that the molar ratio [(dihydroxynaphthalene compound) / (aldehyde compound)] is A range of 0.1 to 3.0 is preferable.
- Examples of the acid catalyst used in Method 2 include inorganic acids such as hydrochloric acid, sulfuric acid, and phosphoric acid, organic acids such as methanesulfonic acid, p-toluenesulfonic acid, and oxalic acid, boron trifluoride, anhydrous aluminum chloride, Examples include Lewis acids such as zinc chloride.
- the amount of these acid catalysts used is preferably in the range of 0.1 to 25% by mass relative to the total mass of the reaction raw materials.
- the temperature condition for reacting the dihydroxynaphthalene compound and the aldehyde compound is preferably in the range of 50 to 120 ° C. because the phenolic hydroxyl group-containing compound is efficiently produced.
- the reaction between the dihydroxynaphthalene compound and the aldehyde compound may be performed in an organic solvent as necessary.
- organic solvent used here include organic solvents that can be used in the production method 1 described above.
- the composition containing the phenolic hydroxyl group-containing compound (A) is obtained by washing the reaction mixture with water, removing the organic solvent under heating under reduced pressure, and drying. can get. Furthermore, the phenolic hydroxyl group-containing compound can be obtained with higher purity by a method of redissolving the obtained composition in the alcohol solvent or the like and then dropping it into water to reprecipitate it.
- the phenolic hydroxyl group-containing compound used in the present invention described in detail above is excellent in solubility in general-purpose organic solvents, and is suitable for resist permanent film applications because it provides a coating film excellent in heat decomposition resistance. Can be used. Furthermore, the phenolic hydroxyl group-containing compound used in the present invention can be used for various electric and electronic member applications other than the resist permanent film such as adhesives, paints, photoresists and printed wiring boards. Furthermore, the phenolic hydroxyl group-containing compound used in the present invention is a qualitative or quantitative analysis of metal ions, separation of metal ions, molecular sensors, artificial enzymes, various chromatographies utilizing the inclusion function and catalytic function resulting from the structure. Application to charge control agents in materials and toners can also be expected.
- the curable composition for a resist permanent film of the present invention contains a phenolic hydroxyl group-containing compound (A) and a photosensitizer (B1) or a curing agent (B2).
- Examples of the photosensitive agent (B1) used in the present invention include compounds having a quinonediazide group.
- Specific examples of the compound having a quinonediazide group include, for example, an aromatic (poly) hydroxy compound, naphthoquinone-1,2-diazide-5-sulfonic acid, naphthoquinone-1,2-diazide-4-sulfonic acid, orthoanthra Examples thereof include complete ester compounds, partial ester compounds, amidated products, and partially amidated products with sulfonic acids having a quinonediazide group such as quinonediazidesulfonic acid.
- aromatic (poly) hydroxy compound used here examples include 2,3,4-trihydroxybenzophenone, 2,4,4′-trihydroxybenzophenone, 2,4,6-trihydroxybenzophenone, 2,3,4, 6-trihydroxybenzophenone, 2,3,4-trihydroxy-2′-methylbenzophenone, 2,3,4,4′-tetrahydroxybenzophenone, 2,2 ′, 4,4′-tetrahydroxybenzophenone, 2, 3 ′, 4,4 ′, 6-pentahydroxybenzophenone, 2,2 ′, 3,4,4′-pentahydroxybenzophenone, 2,2 ′, 3,4,5-pentahydroxybenzophenone, 2,3 ′, 4,4 ′, 5 ′, 6-hexahydroxybenzophenone, 2,3,3 ′, 4,4 ′, 5′-hexahydroxyben Polyhydroxy benzophenone compounds such phenone;
- a tris (hydroxyphenyl) methane compound such as phenyl) -3,4-dihydroxyphenylmethane, bis (4-hydroxy-3,5-dimethylphenyl) -3,4-dihydroxyphenylmethane, or a methyl-substituted product thereof;
- the compounding quantity of the said photosensitizer (B1) in the curable composition for resist permanent films of this invention becomes a curable composition from which the resist permanent film excellent in photosensitivity is obtained
- the said phenolic hydroxyl group containing compound (A ) A ratio of 5 to 50 parts by mass with respect to 100 parts by mass is preferable.
- Examples of the curing agent (B2) include a melamine compound, a guanamine compound, a glycoluril compound, a urea compound, a resole resin, and an epoxy substituted with at least one group selected from a methylol group, an alkoxymethyl group, and an acyloxymethyl group.
- the melamine compound examples include hexamethylol melamine, hexamethoxymethyl melamine, a compound in which 1 to 6 methylol groups of hexamethylol melamine are methoxymethylated, hexamethoxyethyl melamine, hexaacyloxymethyl melamine, hexamethylol melamine methylol
- guanamine compound examples include tetramethylol guanamine, tetramethoxymethyl guanamine, tetramethoxymethyl benzoguanamine, a compound in which 1 to 4 methylol groups of tetramethylol guanamine are methoxymethylated, tetramethoxyethyl guanamine, tetraacyloxyguanamine, tetra Examples thereof include compounds in which 1 to 4 methylol groups of methylolguanamine are acyloxymethylated.
- glycoluril compound examples include 1,3,4,6-tetrakis (methoxymethyl) glycoluril, 1,3,4,6-tetrakis (butoxymethyl) glycoluril, 1,3,4,6-tetrakis ( Hydroxymethyl) glycoluril and the like.
- urea compound examples include 1,3-bis (hydroxymethyl) urea, 1,1,3,3-tetrakis (butoxymethyl) urea and 1,1,3,3-tetrakis (methoxymethyl) urea. It is done.
- the resole resin may be, for example, an alkylphenol such as phenol, cresol or xylenol, a bisphenol such as phenylphenol, resorcinol, biphenyl, bisphenol A or bisphenol F, a phenolic hydroxyl group-containing compound such as naphthol or dihydroxynaphthalene, and an aldehyde compound.
- alkylphenol such as phenol, cresol or xylenol
- a bisphenol such as phenylphenol, resorcinol, biphenyl, bisphenol A or bisphenol F
- a phenolic hydroxyl group-containing compound such as naphthol or dihydroxynaphthalene
- aldehyde compound examples include polymers obtained by reacting under catalytic conditions.
- epoxy compound examples include tris (2,3-epoxypropyl) isocyanurate, trimethylolmethane triglycidyl ether, trimethylolpropane triglycidyl ether, triethylolethane triglycidyl ether, and the like.
- isocyanate compound examples include tolylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, and cyclohexane diisocyanate.
- azide compound examples include 1,1'-biphenyl-4,4'-bisazide, 4,4'-methylidenebisazide, 4,4'-oxybisazide, and the like.
- Examples of the compound containing a double bond such as an alkenyl ether group include ethylene glycol divinyl ether, triethylene glycol divinyl ether, 1,2-propanediol divinyl ether, 1,4-butanediol divinyl ether, tetramethylene glycol divinyl ether.
- Examples of the acid anhydride include phthalic anhydride, trimellitic anhydride, pyromellitic anhydride, 3,3 ′, 4,4′-benzophenonetetracarboxylic dianhydride, biphenyltetracarboxylic dianhydride, 4,4 Aromatic acid anhydrides such as '-(isopropylidene) diphthalic anhydride, 4,4'-(hexafluoroisopropylidene) diphthalic anhydride; tetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, hexahydrophthalic anhydride And alicyclic carboxylic acid anhydrides such as methylhexahydrophthalic anhydride, endomethylenetetrahydrophthalic anhydride, dodecenyl succinic anhydride, and trialkyltetrahydrophthalic anhydride.
- a glycoluril compound, a urea compound, and a resole resin are preferable, and a glycoluril compound is particularly preferable because a curable composition is obtained that provides a resist permanent film having excellent curability and excellent thermal decomposition resistance.
- the blending amount of the curing agent (B2) in the curable composition of the present invention is a composition having excellent curability, and therefore 0.5 to 20 with respect to 100 parts by mass of the phenolic hydroxyl group-containing compound (A). It is preferable that it is the ratio used as a mass part.
- other resin (A ′) may be used in combination with the phenolic hydroxyl group-containing compound (A). Any other resin (A ′) may be used as long as it is soluble in an alkali developer or can be dissolved in an alkali developer by using it in combination with an additive such as an acid generator. it can.
- Examples of the other resin (A ′) used herein include other phenol resins (A′-1) other than the phenolic hydroxyl group-containing compound (A), p-hydroxystyrene, and p- (1,1,1,1). Homopolymers or copolymers (A′-2), (A′-1) or (A′-2) of hydroxy group-containing styrene compounds such as 3,3,3-hexafluoro-2-hydroxypropyl) styrene ) Modified with an acid-decomposable group such as t-butoxycarbonyl group or benzyloxycarbonyl group (A'-3), homopolymer or copolymer of (meth) acrylic acid (A'-4) And an alternating polymer (A′-5) of an alicyclic polymerizable monomer such as a norbornene compound or a tetracyclododecene compound and maleic anhydride or maleimide.
- the other phenol resin (A′-1) includes, for example, phenol novolak resin, cresol novolak resin, naphthol novolak resin, co-condensed novolak resin using various phenolic compounds, aromatic Aromatic hydrocarbon formaldehyde resin modified phenolic resin, dicyclopentadiene phenol addition type resin, phenol aralkyl resin (Zylok resin), naphthol aralkyl resin, trimethylol methane resin, tetraphenylol ethane resin, biphenyl modified phenol resin (phenol nucleus with bismethylene group) Polyphenylphenol compound), biphenyl-modified naphthol resin (polyvalent naphthol compound with phenolic nucleus linked by bismethylene group), aminotriazine-modified phenolic resin (melamine) And phenolic resins such as benzoguanamine and other polyphenolic compounds in which a phenol nucleus is linked) and alkoxy
- the cresol novolac resin or cresol and other phenolic compounds are co-polymerized.
- a condensed novolac resin is preferred.
- the cresol novolak resin or the co-condensed novolak resin of cresol and other phenolic compound comprises at least one cresol selected from the group consisting of o-cresol, m-cresol and p-cresol and an aldehyde compound. It is a novolak resin obtained as an essential raw material and appropriately used in combination with other phenolic compounds.
- phenolic compounds other than the cresol include, for example, phenol; 2,3-xylenol, 2,4-xylenol, 2,5-xylenol, 2,6-xylenol, 3,4-xylenol, 3,5-xylenol Xylenol such as o-ethylphenol, m-ethylphenol, p-ethylphenol, etc .; butylphenol such as isopropylphenol, butylphenol, pt-butylphenol; p-pentylphenol, p-octylphenol, p-nonylphenol, alkylphenols such as p-cumylphenol; halogenated phenols such as fluorophenol, chlorophenol, bromophenol and iodophenol; p-phenylphenol, aminophenol, nitrophenol, 1-substituted phenols such as nitrophenol and trinitrophenol; condensed polycycl
- phenolic compounds may be used alone or in combination of two or more.
- the amount used is preferably such that the other phenolic compound is in the range of 0.05 to 1 mol with respect to a total of 1 mol of the cresol raw material.
- aldehyde compound examples include formaldehyde, paraformaldehyde, trioxane, acetaldehyde, propionaldehyde, polyoxymethylene, chloral, hexamethylenetetramine, furfural, glyoxal, n-butyraldehyde, caproaldehyde, allylaldehyde, benzaldehyde, croton.
- formaldehyde is preferable because of its excellent reactivity, and formaldehyde and other aldehyde compounds may be used in combination.
- the amount of the other aldehyde compounds used is preferably in the range of 0.05 to 1 mole per mole of formaldehyde.
- the reaction ratio between the phenolic compound and the aldehyde compound in producing the novolak resin is such that a photosensitive resin composition having excellent sensitivity and heat resistance can be obtained.
- the range is preferably 1.6 mol, and more preferably in the range of 0.5 to 1.3.
- the reaction between the phenolic compound and the aldehyde compound is performed in the presence of an acid catalyst at a temperature of 60 to 140 ° C., and then water and residual monomers are removed under reduced pressure.
- an acid catalyst used here include oxalic acid, sulfuric acid, hydrochloric acid, phenolsulfonic acid, p-toluenesulfonic acid, zinc acetate, manganese acetate, etc., each of which may be used alone or in combination of two or more. May be. Of these, oxalic acid is preferred because of its excellent catalytic activity.
- cresol novolak resins using metacresol alone or cresol novolak resins using metacresol and paracresol in combination It is preferable that In the latter case, the reaction molar ratio of metacresol to paracresol [metacresol / paracresol] is a photosensitive resin composition having an excellent balance between sensitivity and heat resistance, so that the ratio is 10/0 to 2/8.
- the range is preferable, and the range of 7/3 to 2/8 is more preferable.
- the compounding ratio of the said phenolic hydroxyl group containing compound (A) and other resin (A') is the said phenolic hydroxyl group containing compound (A) in the sum total of a resin component.
- the content By setting the content to 60% by mass or more, it is preferable because it becomes a curable composition from which a resist permanent film having high photosensitivity and excellent resolution and heat resistance can be obtained, and more preferably 80% by mass or more.
- the blending amount of the photosensitive agent (B1) in the curable composition of the present invention is a curable composition from which a resist permanent film having excellent photosensitivity can be obtained.
- the ratio is preferably 5 to 50 parts by mass with respect to 100 parts by mass in total of the resin components in the composition.
- the curable composition of the present invention may contain a surfactant for the purpose of improving the film forming property and pattern adhesion when forming a resist permanent film, and reducing development defects.
- a surfactant for the purpose of improving the film forming property and pattern adhesion when forming a resist permanent film, and reducing development defects.
- the surfactant used here include polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyoxyethylene cetyl ether, polyoxyethylene alkyl ether compounds such as polyoxyethylene oleyl ether, polyoxyethylene octylphenol ether, polyoxyethylene Polyoxyethylene alkyl allyl ether compounds such as ethylene nonylphenol ether, polyoxyethylene / polyoxypropylene block copolymers, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan monooleate, sorbitan trioleate, sorbitan tristearate Sorbitan fatty acid este
- the blending amount of these surfactants is preferably in the range of 0.001 to 2 parts by mass with respect to 100 parts by mass of the resin solid content in the curable composition of the present invention.
- the curable composition of the present invention may further contain various additives such as other phenolic resins (A ′), surfactants, dyes, fillers, cross-linking agents, and dissolution accelerators as necessary. It can be obtained by dissolving.
- additives such as other phenolic resins (A ′), surfactants, dyes, fillers, cross-linking agents, and dissolution accelerators as necessary. It can be obtained by dissolving.
- organic solvent examples include alkylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether propylene glycol monomethyl ether; diethylene glycol dimethyl ether, diethylene glycol diethyl ether, and diethylene glycol diethylene ether.
- alkylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether propylene glycol monomethyl ether; diethylene glycol dimethyl ether, diethylene glycol diethyl ether, and diethylene glycol diethylene ether.
- Dialkylene glycol dialkyl ethers such as propyl ether and diethylene glycol dibutyl ether; alkylene glycol alkyl ether acetates such as ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate and propylene glycol monomethyl ether acetate; Ketone compounds such as methyl, methyl ethyl ketone, cyclohexanone and methyl amyl ketone; cyclic ethers such as dioxane; methyl 2-hydroxypropionate, ethyl 2-hydroxypropionate, ethyl 2-hydroxy-2-methylpropionate, ethyl ethoxyacetate, Ester compounds such as ethyl oxyacetate, methyl 2-hydroxy-3-methylbutanoate, 3-methoxybutyl acetate, 3-methyl-3-methoxybutyl acetate, ethyl formate, ethyl acetate, butyl
- resins other than the phenolic hydroxyl group-containing compound (A) and the phenol resin (A ′) can be used in combination as long as the effects of the present invention are not impaired.
- Other resins used here include, for example, various novolak resins, addition polymerization resins of alicyclic diene compounds such as dicyclopentadiene and phenolic compounds, modified novolaks of phenolic hydroxyl group-containing compounds and alkoxy group-containing aromatic compounds.
- Resins phenol aralkyl resins (Zyloc resins), naphthol aralkyl resins, trimethylol methane resins, tetraphenylol ethane resins, biphenyl modified phenol resins, biphenyl modified naphthol resins, aminotriazine modified phenol resins, and various vinyl polymers It is done.
- the various novolak resins include phenolphenol, cresol, xylenol and other alkylphenols, phenylphenol, resorcinol, biphenyl, bisphenols such as bisphenol A and bisphenol F, phenolic hydroxyl group-containing compounds such as naphthol and dihydroxynaphthalene. And a polymer obtained by reacting an aldehyde compound with acid catalyst conditions.
- the various vinyl polymers include polyhydroxystyrene, polystyrene, polyvinyl naphthalene, polyvinyl anthracene, polyvinyl carbazole, polyindene, polyacenaphthylene, polynorbornene, polycyclodecene, polytetracyclododecene, polynortricyclene, poly ( A homopolymer of a vinyl compound such as (meth) acrylate or a copolymer thereof may be mentioned.
- the blending ratio of the phenolic hydroxyl group-containing compound (A) and the other resins can be arbitrarily set according to the use, but the resist having excellent thermal decomposition resistance according to the present invention. Since the effect of obtaining a permanent film is more remarkably exhibited, it is preferable that the ratio of the other resin is 0.5 to 100 parts by mass with respect to 100 parts by mass of the phenolic hydroxyl group-containing compound (A). .
- curing agent (B2) in the curable composition of this invention becomes a composition excellent in sclerosis
- the said phenolic hydroxyl-containing compound (A) and The ratio is preferably 0.5 to 50 parts by mass with respect to 100 parts by mass in total with other resins.
- the curable composition for a resist permanent film of the present invention can be prepared by blending the above components and mixing them using a stirrer or the like. Further, when the curable composition for a resist permanent film contains a filler or a pigment, it can be adjusted by dispersing or mixing using a dispersing device such as a dissolver, a homogenizer, or a three roll mill.
- a dispersing device such as a dissolver, a homogenizer, or a three roll mill.
- the photolithography method using the curable composition for permanent film of the present invention is, for example, by applying a photosensitive composition for permanent film dissolved and dispersed in an organic solvent onto an object to be subjected to silicon substrate photolithography. , And pre-bake at a temperature of 60 to 150 ° C.
- the coating method at this time may be any method such as spin coating, roll coating, flow coating, dip coating, spray coating, doctor blade coating and the like.
- a resist pattern is created.
- the permanent film photosensitive composition is positive, the target resist pattern is exposed through a predetermined mask, and the exposed portion is dissolved with an alkaline developer. Thus, a resist pattern is formed. Since the photosensitive composition for permanent films according to the present invention has high photosensitivity, it is possible to form a resist pattern with excellent resolution.
- the thin film (coating film, resist permanent film) formed by applying the curable composition for permanent film according to the present invention is suitable as a permanent film remaining in the final product after forming a resist pattern as necessary.
- permanent films include solder resists, package materials, underfill materials, package adhesive layers such as circuit elements, adhesive layers between integrated circuit elements and circuit boards, and thin displays such as LCD and OELD.
- Examples include a thin film transistor protective film, a liquid crystal color filter protective film, a black matrix, and a spacer.
- the permanent film made of the photosensitive composition for permanent film according to the present invention is excellent in heat resistance and moisture absorption, and also has very little released hydroxynaphthalenes and low contamination. Has excellent advantages.
- the photosensitive composition for a permanent film according to the present invention is a material having high sensitivity, high heat resistance, and moisture absorption reliability with little image quality deterioration.
- ⁇ GPC measurement conditions Measuring device: “HLC-8220 GPC” manufactured by Tosoh Corporation Column: Guard column “HHR-H” (6.0 mm ID ⁇ 4 cm) manufactured by Tosoh Corporation + “TSK-GEL GMHHR-N” (7.8 mm ID ⁇ 30 cm) manufactured by Tosoh Corporation + Tosoh Corporation “TSK-GEL GMHHR-N” (7.8 mm ID ⁇ 30 cm) + Tosoh Corporation “TSK-GEL GMHHR-N” (7.8 mm ID ⁇ 30 cm) + Tosoh Corporation “TSK- GEL GMHHR-N "(7.8 mm ID x 30 cm) Detector: ELSD ("ELSD2000” manufactured by Oltech Japan Co., Ltd.) Data processing: “GPC-8020 Model II data analysis version 4.30” manufactured by Tosoh Corporation Measurement conditions: Column temperature 40 ° C Developing solvent Tetrahydrofuran (THF) Flow rate: 1.0 ml
- the organic layer was washed seven times with 160 g of ion-exchanged water, and it was confirmed that the rejected aqueous layer had a pH of 4.
- the upper organic layer was concentrated by heating under reduced pressure using an evaporator, and further dried to obtain 247 g of a composition containing 89% of the target phenolic hydroxyl group-containing compound (A1) in the area ratio of GPC. The yield was 93%. From the FD-MS spectrum, 1056 peaks indicating a cyclic compound (a compound having the molecular structure represented by the structural formula (1)) were detected.
- Synthesis example 2 (same as above) Except for using 122 g of salicylaldehyde instead of 122 g of 4-hydroxybenzaldehyde, 252 g of a composition containing 95% of the phenolic hydroxyl group-containing compound (A2) in GPC area ratio was obtained in the same manner as in Synthesis Example 1. From the FD-MS spectrum, 1056 peaks indicating a cyclic compound (a compound having a molecular structure represented by the structural formula (1)) were detected.
- FIG. 5 shows the GPC chart of the phenolic hydroxyl group-containing compound (A2)
- FIG. 6 shows the 1 H-NMR chart
- FIG. 7 shows the IR chart
- FIG. 8 shows the FD-MS chart.
- the phenolic hydroxyl group-containing compound (A2) corresponding to the 1156 peak detected in the FD-MS spectrum has the following structure.
- Example 1 Using the phenolic hydroxyl group-containing compound (A1), a curable composition for a resist permanent film (1) of the present invention was prepared as follows. The solvent solubility of the obtained resist permanent film curable composition (1) and the developability, photosensitivity and resolution of the coating film obtained using the composition (1) with respect to an alkaline solution were evaluated according to the following methods. did. Moreover, the heat resistance of the phenolic hydroxyl group-containing compound (A1) was evaluated according to the following method. The evaluation results are shown in Table 1.
- PMEA propylene glycol monomethyl ether acetate
- ⁇ Method for evaluating developability of coating film with respect to alkaline solution> The PGMEA solution obtained in the above ⁇ Method for evaluating solvent solubility> was applied on a silicon wafer having a diameter of 5 inches using a spin coater and then dried at 110 ° C. for 60 seconds to obtain a thin film having a thickness of about 1 ⁇ m.
- the speed (ADR) was measured to evaluate the alkali solution resistance.
- ADR was measured before and after exposure to the thin film. The exposure amount is 100 mJ / cm 2 .
- ⁇ Evaluation method of photosensitivity 16 parts of a phenolic hydroxyl group-containing compound (A1) and 3 parts of a curing agent (“1,3,4,6-tetrakis (methoxymethyl) glycoluril” manufactured by Tokyo Chemical Industry Co., Ltd.) are added to 100 parts of PGMEA and mixed. The resultant was dissolved and filtered through a 0.2 ⁇ m membrane filter to obtain a curable composition for a resist permanent film (1-2) of the present invention.
- a mask corresponding to a 1 to 10 ⁇ m resist pattern with a line and space of 1: 1 is adhered to a silicon wafer on which a curable composition for a resist permanent film (1-2) is applied to a thickness of about 1 ⁇ m and dried. After that, an exposure amount (Eop exposure amount) capable of faithfully reproducing 3 ⁇ m with a ghi line lamp was determined. The smaller the amount, the better the sensitivity.
- ⁇ Resolution evaluation method> A photomask is placed on a silicon wafer that has been coated with a curable composition for resist permanent film (1-2) and dried, and irradiated with 100 mJ / cm 2 using a multi-light (g ⁇ h ⁇ i line) manufactured by USHIO INC. I was exposed to light.
- Example 2 and Comparative Examples 1 and 2 A curable composition for a resist permanent film and a curable composition for a resist permanent film for comparison were obtained in the same manner as in Example 1 except that the formulation shown in Table 1 was used. The same evaluation as in Example 1 was performed, and the results are shown in Table 1.
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Abstract
Description
で表される分子構造を有するフェノール性水酸基含有化合物(A)と、感光剤(B1)または硬化剤(B2)とを含有することを特徴とするレジスト永久膜用硬化性組成物を提供するものである。
で表される分子構造を有する。
で表される分子構造を有することがより好ましい。
で表される構造部位が挙げられ、具体的には、フェニル基、ヒドロキシフェニル基、ジヒドロキシフェニル基、ヒドロキシアルコキシフェニル基、アルコキシフェニル基、トリル基、キシリル基、ナフチル基、ヒドロキシナフチル基、ジヒドロキシナフチル基等が挙げられる。
の何れかで表される化合物等が挙げられる。
測定装置:東ソー株式会社製「HLC-8220 GPC」、
カラム:東ソー株式会社製ガードカラム「HHR-H」(6.0mmI.D.×4cm)+東ソー株式会社製「TSK-GEL GMHHR-N」(7.8mmI.D.×30cm)+東ソー株式会社製「TSK-GEL GMHHR-N」(7.8mmI.D.×30cm)+東ソー株式会社製「TSK-GEL GMHHR-N」(7.8mmI.D.×30cm)+東ソー株式会社製「TSK-GEL GMHHR-N」(7.8mmI.D.×30cm)
検出器:ELSD(オルテックジャパン株式会社製「ELSD2000」)
データ処理:東ソー株式会社製「GPC-8020モデルIIデータ解析バージョン4.30」
測定条件:カラム温度 40℃
展開溶媒 テトラヒドロフラン(THF)
流速 1.0ml/分
試料:樹脂固形分換算で1.0質量%のテトラヒドロフラン溶液をマイクロフィルターでろ過したもの(5μl)。
標準試料:前記「GPC-8020モデルIIデータ解析バージョン4.30」の測定マニュアルに準拠して、分子量が既知の下記の単分散ポリスチレンを用いた。
東ソー株式会社製「A-500」
東ソー株式会社製「A-1000」
東ソー株式会社製「A-2500」
東ソー株式会社製「A-5000」
東ソー株式会社製「F-1」
東ソー株式会社製「F-2」
東ソー株式会社製「F-4」
東ソー株式会社製「F-10」
東ソー株式会社製「F-20」
東ソー株式会社製「F-40」
東ソー株式会社製「F-80」
東ソー株式会社製「F-128」
東ソー株式会社製「F-288」
東ソー株式会社製「F-550」
装置:日本電子(株)製 AL-400
溶媒:ジメチルスルホキシド-d6、TMS基準
試料濃度 :30wt%
測定モード:SGNNE(NOE消去の1H完全デカップリング法)
パルス角度:45°パルス
積算回数 :10000回
日本分光株式会社製「FT/IR-500」を用いて、KBr錠剤法により測定を行った。
日本電子株式会社製の二重収束型質量分析装置AX505H(FD505H)を用いて測定した。
温度計、滴下ロート、冷却管、撹拌器を取り付けたフラスコに、1,6-ジヒドロキシナフタレン160g、4-ヒドロキシベンズアルデヒド122g、2-エトキシエタノール290g、95%硫酸1.7gを仕込み、80℃に昇温後8時間撹拌した。反応終了後、酢酸エチル300g、イオン交換水160gを加えた後、分液漏斗で下層よりpH1の水層を棄却した。イオン交換水160gによる有機層洗浄を7回実施し、棄却される水層がpH4であることを確認した。上層の有機層を、エバポレータを用いて加熱減圧濃縮し、更に乾燥を行い、目的のフェノール性水酸基含有化合物(A1)がGPCの面積比で89%含まれる組成物247gを得た。収率は93%であり、FD-MSスペクトルから環状化合物〔前記構造式(1)で表される分子構造を有する化合物)を示す1056のピークが検出された。
4-ヒドロキシベンズアルデヒド122gの代わりにサリチルアルデヒドを122g用いた以外は合成例1と同様にしてフェノール性水酸基含有化合物(A2)がGPCの面積比で95%含まれる組成物252gを得た。FD-MSスペクトルから環状化合物〔前記構造式(1)で表される分子構造を有する化合物)を示す1056のピークが検出された。
温度計、滴下ロート、冷却管、撹拌器を取り付けたフラスコに、α-ナフトール48g(0.30モル)、42%ホルムアルデヒド水溶液26g(0.36モル)、イソプロピルアルコール50g及び48%水酸化ナトリウム9.4g(0.11モル)を仕込み、室温下、窒素を吹き込みながら撹拌した。その後、80℃に昇温して1時間撹拌した。反応終了後、第1リン酸ソーダ8gを添加して中和し、冷却して結晶物をろ別した。該結晶物を水50gで3回洗浄した後、加熱減圧乾燥して比較対照用環状化合物〔比較対照用フェノール性水酸基含有化合物(A´1)〕47gを得た。
温度計、冷却管、撹拌器を取り付けた1Lの四口フラスコに、1-ナフトール144g(1.0モル)、メチルイソブチルケトン400g、水96g及び92%パラホルムアルデヒド27.7g(0.85モル)を仕込んだ。続いて攪拌しながら50%濃度に調整したパラトルエンスルホン酸の水溶液4.8gを添加した。その後、攪拌しながら80℃に昇温し、2時間反応させた。反応終了後、系内の溶液を分液ロートに移し水層を有機層から分離除去した。次いで洗浄水が中性を示すまで水洗後、有機層から溶媒を加熱減圧下に除去し、比較対照用環状化合物〔ナフトールノボラック樹脂(A´2)〕47gを得た。
フェノール性水酸基含有化合物(A1)を用いて本発明のレジスト永久膜用硬化性組成物(1)を下記に従い調製した。得られたレジスト永久膜用硬化性組成物(1)のの溶剤溶解性と、該組成物(1)を用いて得られる塗膜のアルカリ溶液に対する現像性、光感度及び解像度を下記方法に従い評価した。また、フェノール性水酸基含有化合物(A1)の耐熱性を下記方法に従い評価した。評価結果を第1表に示す。
フェノール性水酸基含有化合物(A1)8部と、と感光剤(東洋合成工業株式会社製「P-200」4,4‘-[1-[4-[1-(4-ヒドロキシフェニル)-1-メチルエチル]フェニル]エチリデン]ビスフェノール1モルと、1,2-ナフトキノン-2-ジアジド-5-スルホニルクロリド2モルとの縮合物)2部を、プロピレングリコールモノメチルエーテルアセテート(以下、「PGMEA」と略記する。)を溶液濃度20%になるようPGMEAに加え、本発明のレジスト永久膜用硬化性組成物(1-1)を得た。レジスト永久膜用硬化性組成物(1-1)を常温条件下で振とう機にて撹拌し、PGMEA溶液を得た。撹拌後、容器内の溶剤の状態を目視で評価した。
溶解:均一透明な状態
不溶:固形成分が析出または沈殿した状態
前記<溶剤溶解性の評価方法>で得たPGMEA溶液を直径5インチのシリコンウェハー上にスピンコーターを用いて塗布後、110℃で60秒乾燥し、約1μmの厚さの薄膜を得た。アルカリ溶液(2.38質量%テトラメチルアンモニウムヒドロキシド水溶液)に60秒浸漬させ、浸漬後の膜厚を、膜厚計(フィルメトリクス社製「F-20」)を用いて測定してアルカリ溶解速度(ADR)を測定して、耐アルカリ溶液性を評価した。ADRは薄膜への露光前と露光後とで測定した。露光量は100mJ/cm2である。
フェノール性水酸基含有化合物(A1)16部、硬化剤(東京化成工業(株)製「1,3,4,6-テトラキス(メトキシメチル)グリコールウリル」)3部をPGMEA 100部に加え、混合、溶解し、0.2μmのメンブランフィルターでろ過し、本発明のレジスト永久膜用硬化性組成物(1-2)を得た。
レジスト永久膜用硬化性組成物(1-2)を塗布して乾燥したシリコンウェハー上にフォトマスクを乗せ、ウシオ電機(株)製マルチライト(g・h・i線)で100mJ/cm2照射し感光した。得られた感光済み塗膜を上記<溶剤溶解性の評価方法>と同様に現像、乾燥させ、(株)キーエンス製レーザーマイクロスコープVK-8500でパターン状態を下記基準により評価した。
○:L/S=5μmで解像できているもの、
×:L/S=5μmで解像できていないもの。
示差熱熱重量同時測定装置(TG/DTA)を用い、下記条件で、一定速度で昇温時の重量減少を測定し、熱分解開始温度を求めた。この温度が高い程、耐熱性に優れる。
測定機器:セイコーインスツールメント社製TG/DTA 6200
測定範囲:RT~400℃
昇温速度:10℃/min
雰囲気:窒素
第1表に示す配合を用いた以外は実施例1と同様にして、レジスト永久膜用硬化性組成物及び比較対照用レジスト永久膜用硬化性組成物を得た。実施例1と同様の評価を行い、その結果を第1表に示す。
Claims (7)
- 前記フェノール性水酸基含有化合物(A)が、ジヒドロキシナフタレン化合物と芳香族アルデヒドとを酸性触媒の存在下で反応させて得られるものである請求項1記載のレジスト永久膜用硬化性組成物。
- 前記ジヒドロキシナフタレン化合物が1,6-ジヒドロキシナフタレンであり、前記芳香族アルデヒドが、4-ヒドロキシベンズアルデヒドまたはサリチルアルデヒドである請求項3記載のレジスト永久膜用硬化性組成物。
- 前記感光剤(B1)をフェノール性水酸基含有化合物(A)100質量部に対し5~50質量部含有する請求項1記載のレジスト永久膜用硬化性組成物。
- 前記硬化剤(B2)をフェノール性水酸基含有化合物(A)100質量部に対し0.5~20質量部含有する請求項1記載のレジスト永久膜用硬化性組成物。
- 請求項1~6のいずれか1項記載のレジスト永久膜用硬化性組成物を硬化させてなることを特徴とするレジスト永久膜。
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| US15/535,839 US10179828B2 (en) | 2015-01-16 | 2015-11-19 | Curable composition for permanent resist films, and permanent resist film |
| KR1020177012627A KR102438520B1 (ko) | 2015-01-16 | 2015-11-19 | 레지스트 영구막용 경화성 조성물 및 레지스트 영구막 |
| CN201580073572.5A CN107111229B (zh) | 2015-01-16 | 2015-11-19 | 抗蚀永久膜用固化性组合物及抗蚀永久膜 |
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| US11487204B2 (en) * | 2017-07-27 | 2022-11-01 | Dic Corporation | Resist material |
| WO2022065041A1 (ja) * | 2020-09-28 | 2022-03-31 | Dic株式会社 | フェノール性水酸基含有樹脂、アルカリ現像性レジスト用樹脂組成物、及びレジスト硬化性樹脂組成物、並びにフェノール性水酸基含有樹脂の製造方法 |
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Also Published As
| Publication number | Publication date |
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| US20170349690A1 (en) | 2017-12-07 |
| TWI669349B (zh) | 2019-08-21 |
| US10179828B2 (en) | 2019-01-15 |
| TW201638251A (zh) | 2016-11-01 |
| CN107111229B (zh) | 2020-11-27 |
| CN107111229A (zh) | 2017-08-29 |
| JP6028883B1 (ja) | 2016-11-24 |
| JPWO2016114000A1 (ja) | 2017-04-27 |
| KR102438520B1 (ko) | 2022-09-01 |
| KR20170104441A (ko) | 2017-09-15 |
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