WO2017094516A1 - フェノール性水酸基含有樹脂及びレジスト膜 - Google Patents
フェノール性水酸基含有樹脂及びレジスト膜 Download PDFInfo
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- WO2017094516A1 WO2017094516A1 PCT/JP2016/084054 JP2016084054W WO2017094516A1 WO 2017094516 A1 WO2017094516 A1 WO 2017094516A1 JP 2016084054 W JP2016084054 W JP 2016084054W WO 2017094516 A1 WO2017094516 A1 WO 2017094516A1
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- resin
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- 0 CC=C[C@]1C(*)=CC=CC1 Chemical compound CC=C[C@]1C(*)=CC=CC1 0.000 description 2
- DKWYZBFGYJOCJX-UHFFFAOYSA-N IC(c1ccccc1)c1ccccc1 Chemical compound IC(c1ccccc1)c1ccccc1 DKWYZBFGYJOCJX-UHFFFAOYSA-N 0.000 description 2
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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
- C08G8/28—Chemically modified polycondensates
- C08G8/30—Chemically modified polycondensates by unsaturated compounds, e.g. terpenes
-
- 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
- C08G8/08—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ
- C08G8/20—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ with polyhydric phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
- C08L61/12—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols with polyhydric phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
- C08L61/14—Modified phenol-aldehyde condensates
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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
- G03F7/022—Quinonediazides
- G03F7/023—Macromolecular quinonediazides; Macromolecular additives, e.g. binders
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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
- G03F7/022—Quinonediazides
- G03F7/023—Macromolecular quinonediazides; Macromolecular additives, e.g. binders
- G03F7/0233—Macromolecular quinonediazides; Macromolecular additives, e.g. binders characterised by the polymeric binders or the macromolecular additives other than the macromolecular quinonediazides
- G03F7/0236—Condensation products of carbonyl compounds and phenolic compounds, e.g. novolak resins
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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
-
- 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
Definitions
- the present invention relates to a phenolic hydroxyl group-containing resin excellent in developability, heat resistance and substrate followability, and a resist film using the same.
- phenolic hydroxyl group-containing resins are excellent in heat resistance and moisture resistance in cured products.
- a curable composition containing a phenolic hydroxyl group-containing resin itself as a main ingredient, or as a curing agent such as an epoxy resin it is widely used in the electrical and electronic fields such as semiconductor sealing materials and insulating materials for printed wiring boards.
- the problem to be solved by the present invention is to provide a phenolic hydroxyl group-containing resin excellent in developability, heat resistance and substrate followability, a photosensitive composition and a curable composition containing the same, and a resist film. is there.
- the present inventors have made a novolak of a triarylmethane type compound having a phenolic hydroxyl group and modified it with a long-chain hydrocarbon group to obtain a phenolic hydroxyl group.
- the present inventors have found that the contained resin is excellent in developability, heat resistance and substrate followability, and have completed the present invention.
- R 1 is any one of a hydrogen atom, an alkyl group, and an aryl group.
- X is the following structural formula (2)
- k is 0, 1, or 2.
- R 2 is each independently a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group or a halogen atom
- l is each independently an integer of 1 to 4.
- R 3 is any one of a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group, and a halogen atom
- m is an integer of 1 to 4. * Is a point of attachment to any of the three aromatic rings shown, and the two * may be bonded to the same aromatic ring, or may be bonded to different aromatic rings.
- ⁇ represented by the following structural formula (3)
- R 2 is each independently a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group or a halogen atom
- l is each independently an integer of 1 to 4.
- R 3 is any one of a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group, and a halogen atom
- n is an integer of 1 to 6. * Is a point of attachment to any of the three aromatic rings shown, and the two * may be bonded to the same aromatic ring, or may be bonded to different aromatic rings.
- the present invention further includes the following structural formula (4) or (5)
- k is 0, 1, or 2.
- R 2 is each independently a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group or a halogen atom
- l is each independently an integer of 1 to 4.
- R 3 is any one of a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group, and a halogen atom
- m is an integer of 1 to 4
- n is an integer of 1 to 6.
- the present invention relates to a method for producing a phenolic hydroxyl group-containing resin in which a compound (C) is reacted.
- the present invention further relates to a photosensitive composition containing the phenolic hydroxyl group-containing resin and a photosensitive agent.
- the present invention further relates to a resist film comprising the photosensitive composition.
- the present invention further relates to a curable composition containing the phenolic hydroxyl group-containing resin and a curing agent.
- the present invention further relates to a cured product of the curable composition.
- the present invention further relates to a resist film comprising the curable composition.
- a phenolic hydroxyl group-containing resin excellent in developability, heat resistance and substrate followability, a photosensitive composition and a curable composition containing the resin, and a resist film can be provided.
- FIG. 1 is a GPC chart of the triarylmethane type compound (A-1) obtained in Production Example 1.
- FIG. 2 is a 13C-NMR chart of the triarylmethane type compound (A-1) obtained in Production Example 1.
- FIG. 3 is a GPC chart of the triarylmethane type compound (A-2) obtained in Production Example 2.
- FIG. 4 is a 13C-NMR chart of the triarylmethane compound (A-2) obtained in Production Example 2.
- FIG. 5 is a GPC chart of the novolak resin intermediate (1) obtained in Production Example 3.
- FIG. 6 is a GPC chart of the phenolic hydroxyl group-containing resin (1) obtained in Example 1.
- FIG. 7 is a GPC chart of the phenolic hydroxyl group-containing resin (2) obtained in Example 2.
- FIG. 8 is a GPC chart of the phenolic hydroxyl group-containing resin (3) obtained in Example 3.
- FIG. 9 is a GPC chart of the phenolic hydroxyl group-containing resin (4) obtained in Example 4.
- FIG. 10 is a GPC chart of the phenolic hydroxyl group-containing resin (5) obtained in Example 5.
- FIG. 11 is a GPC chart of the phenolic hydroxyl group-containing resin (6) obtained in Example 6.
- FIG. 12 is a GPC chart of the phenolic hydroxyl group-containing resin (7) obtained in Example 7.
- FIG. 13 is a GPC chart of the phenolic hydroxyl group-containing resin (8) obtained in Example 8.
- the phenolic hydroxyl group-containing resin of the present invention has the following structural formula (1)
- R 1 is any one of a hydrogen atom, an alkyl group, and an aryl group.
- X is the following structural formula (2)
- k is 0, 1, or 2.
- R 2 is each independently a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group or a halogen atom
- l is each independently an integer of 1 to 4.
- R 3 is any one of a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group, and a halogen atom
- m is an integer of 1 to 4. * Is a point of attachment to any of the three aromatic rings shown, and the two * may be bonded to the same aromatic ring, or may be bonded to different aromatic rings.
- ⁇ represented by the following structural formula (3)
- R 2 is each independently a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group or a halogen atom
- l is each independently an integer of 1 to 4.
- R 3 is any one of a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group, and a halogen atom
- n is an integer of 1 to 6. * Is a point of attachment to any of the three aromatic rings shown, and the two * may be bonded to the same aromatic ring, or may be bonded to different aromatic rings.
- Any one of the structural sites ( ⁇ ) represented by ] Wherein R 2 or R 3 present in the resin is an aliphatic hydrocarbon group having 9 to 24 carbon atoms.
- the phenolic hydroxyl group-containing resin of the present invention is characterized by high heat resistance and excellent developability because it has a highly symmetrical and rigid triarylmethane structure as a repeating unit and has a high density of phenolic hydroxyl groups.
- a resin having excellent substrate followability in addition to heat resistance and developability is realized.
- the developability and the heat resistance are often reduced due to a decrease in functional group density.
- a trade-off of such effects does not occur, and the phenolic hydroxyl group-containing resin is excellent in developability, heat resistance, and substrate followability.
- R 1 in the structural formula (1) is any one of a hydrogen atom, an alkyl group, and an aryl group.
- the alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a t-butyl group, a pentyl group, a hexyl group, a cyclohexyl group, a heptyl group, an octyl group, and a nonyl group.
- aryl group examples include a phenyl group, a tolyl group, a xylyl group, a naphthyl group, an anthryl group, and a structural site in which an alkyl group, an alkoxy group, a halogen atom, or the like is substituted on the aromatic nucleus.
- R 1 is preferably a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and more preferably a hydrogen atom, because it becomes a phenolic hydroxyl group having excellent heat resistance.
- X in the structural formula (1) is either the structural site ( ⁇ ) represented by the structural formula (2) or the structural site ( ⁇ ) represented by the structural formula (3).
- * In the structural formulas (2) and (3) is a point of attachment to any of the three aromatic rings illustrated in the structural formulas (2) and (3), and the two * s are the same. May be bonded to different aromatic rings, or may be bonded to different aromatic rings. That is, the structural site ( ⁇ ) represented by the structural formula (2) specifically includes those represented by any of the following structural formulas (2-1) to (2-4), Specific examples of the structural moiety ( ⁇ ) represented by the structural formula (3) include those represented by any of the following structural formulas (3-1) to (3-4).
- k is 0, 1, or 2.
- R 2 is each independently a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group or a halogen atom
- l is each independently an integer of 1 to 4.
- R 3 is any one of a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group, and a halogen atom
- m is an integer of 1 to 4.
- k is 0, 1, or 2.
- R 2 is each independently a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group or a halogen atom
- l is each independently an integer of 1 to 4.
- R 3 is any one of a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group, and a halogen atom
- n is an integer of 1 to 6.
- all Xs present in the resin may have the same structure or may have a plurality of different structures. Especially, since it becomes phenolic hydroxyl group containing resin excellent in the balance of developability, heat resistance, and substrate followability, it is preferable that it is a structure part ((alpha)) represented by the said Structural formula (2). Moreover, it is preferable that 20 mol% or more of X is a structural site
- R 2 in the structural formulas (2) and (3) is any one of a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group, and a halogen atom.
- the aliphatic hydrocarbon group may be either a straight chain type or a branched structure, and may have either an unsaturated group in the structure or not.
- the number of carbon atoms is not particularly limited, and may be a short chain having 1 to 6 carbon atoms or a relatively long chain having 7 or more carbon atoms.
- the specific structure of the aromatic ring-containing hydrocarbon group is not particularly limited as long as it is a structural part containing an aromatic ring.
- aryl group such as a phenyl group, a tolyl group, a xylyl group, a naphthyl group, an anthryl group, a benzyl group
- Aralkyl groups such as phenylethyl group, phenylpropyl group and naphthylmethyl group.
- 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.
- the halogen atom include a fluorine atom, a chlorine atom, and a bromine atom.
- l is an integer of 2 to 4 because of the phenolic hydroxyl group-containing resin having an excellent balance of developability, heat resistance, and substrate followability
- two R 2 are alkyl groups having 1 to 3 carbon atoms.
- other R 2 is preferably a hydrogen atom or an aliphatic hydrocarbon group having 9 to 24 carbon atoms.
- Two R 2 s that are alkyl groups having 1 to 3 carbon atoms are preferably bonded to the 2,5-position of the phenolic hydroxyl group.
- R 3 in the structural formulas (2) and (3) is any one of a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group, and a halogen atom.
- the aliphatic hydrocarbon group may be either a straight chain type or a branched structure, and may have either an unsaturated group in the structure or not.
- the number of carbon atoms is not particularly limited, and may be a short chain having 1 to 6 carbon atoms or a relatively long chain having 7 or more carbon atoms.
- the specific structure of the aromatic ring-containing hydrocarbon group is not particularly limited as long as it is a structural part containing an aromatic ring.
- aryl group such as a phenyl group, a tolyl group, a xylyl group, a naphthyl group, an anthryl group, a benzyl group
- Aralkyl groups such as phenylethyl group, phenylpropyl group and naphthylmethyl group.
- 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.
- the halogen atom include a fluorine atom, a chlorine atom, and a bromine atom.
- R 3 is preferably a hydrogen atom or an aliphatic hydrocarbon group having 9 to 24 carbon atoms because it becomes a phenolic hydroxyl group-containing resin having an excellent balance of developability, heat resistance, and substrate followability.
- the phenolic hydroxyl group-containing resin of the present invention represented by the structural formula (1), at least one of R 2 and R 3 present in the resin is an aliphatic hydrocarbon group having 9 to 24 carbon atoms.
- the proportion of the aliphatic hydrocarbon group having 9 to 24 carbon atoms is a phenolic hydroxyl group-containing resin having an excellent balance of developability, heat resistance, and substrate followability, and therefore 1 mol of hydroxyl group in the phenolic hydroxyl group-containing resin.
- the aliphatic hydrocarbon group having 9 to 24 carbon atoms is preferably contained in the range of 0.01 to 1 mol.
- the aliphatic hydrocarbon group having 9 to 24 carbon atoms is a phenolic hydroxyl group-containing resin having particularly excellent substrate followability, it is more preferably an aliphatic hydrocarbon group having 10 to 20 carbon atoms. preferable.
- the method for producing the phenolic hydroxyl group-containing resin of the present invention is not particularly limited.
- the following structural formula (4) or (5) the following structural formula (4) or (5)
- k is 0, 1, or 2.
- R 2 is each independently a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group or a halogen atom
- l is each independently an integer of 1 to 4.
- R 3 is any one of a hydrogen atom, an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group, and a halogen atom
- m is an integer of 1 to 4
- n is an integer of 1 to 6.
- the triarylmethane type compound (A) may have the same structure alone, or a plurality of compounds having different molecular structures may be used in combination. Especially, since it becomes phenolic hydroxyl group containing resin excellent in balance of developability, heat resistance, and substrate followability, what has the molecular structure represented by the said Structural formula (4) is preferable. Moreover, it is preferable that 20 mol% or more of a triarylmethane type compound (A) is a compound whose k value is 1. When the value of k is 1, in Structural Formula (4), the bonding positions of the three phenolic hydroxyl groups in the molecular structure are preferably para to the methine group that links the three aromatic rings.
- Examples of the triarylmethane type compound (A) include those obtained by a condensation reaction of a phenol compound (a1) and an aromatic aldehyde compound (a2).
- Examples of the phenol compound (a1) include phenol and compounds in which one or more hydrogen atoms on the aromatic nucleus of the phenol are substituted with an alkyl group, an alkoxy group, a halogen atom, or the like. These may be used alone or in combination of two or more. Among them, since it becomes a phenolic hydroxyl group-containing resin having excellent heat resistance, a compound having any substituent of an alkyl group, an aryl group or an aralkyl group at the 2,5-position of phenol is preferable, and at the 2,5-position. A compound having any one of a methyl group, an ethyl group and a propyl group is preferred, and 2,5-xylenol is particularly preferred.
- the aromatic aldehyde compound (a2) is, for example, a compound having a formyl group on an aromatic nucleus such as benzene, naphthalene, phenol, resorcin, naphthol, dihydroxynaphthalene, etc., in addition to the formyl group, an alkyl group, an alkoxy group, a halogen atom And the like. These may be used alone or in combination of two or more. Among them, those having a benzene ring structure are preferable because they become a phenolic hydroxyl group-containing resin having an excellent balance between heat resistance and developability. Specifically, benzaldehyde, salicylaldehyde, m-hydroxybenzaldehyde, p-hydroxybenzaldehyde are used. preferable.
- the reaction molar ratio [(a) / (b)] of the phenol compound (a1) and the aromatic aldehyde compound (a2) provides the target triarylmethane type compound (A) in high yield and high purity. Therefore, it is preferably in the range of 1 / 0.2 to 1 / 0.5, and more preferably in the range of 1 / 0.25 to 1 / 0.45.
- the reaction of the phenol compound (a1) and the aromatic aldehyde compound (a2) is preferably performed under acid catalyst conditions.
- the acid catalyst used here include acetic acid, oxalic acid, sulfuric acid, hydrochloric acid, phenolsulfonic acid, paratoluenesulfonic acid, zinc acetate, and manganese acetate. These acid catalysts may be used alone or in combination of two or more. Among these, sulfuric acid and paratoluenesulfonic acid are preferable from the viewpoint of excellent catalytic activity.
- the reaction of the phenol compound (a1) and the aromatic aldehyde compound (a2) may be performed in an organic solvent as necessary.
- the solvent used here include monoalcohols such as methanol, ethanol, and propanol; ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, , 6-hexanediol, 1,7-heptanediol, 1,8-octanediol, 1,9-nonanediol, trimethylene glycol, diethylene glycol, polyethylene glycol, glycerin and other polyols; 2-ethoxyethanol, ethylene glycol monomethyl ether , Ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monopentyl ether, ethylene glycol dimethyl
- the reaction of the phenol compound (a1) and the aromatic aldehyde compound (a2) is performed, for example, in a temperature range of 60 to 140 ° C. for 0.5 to 20 hours.
- the reaction product is put into a poor solvent (S1) of the triarylmethane type compound (A), the precipitate is filtered off, and then the solubility of the triarylmethane type compound (A) is improved.
- S1 a poor solvent of the triarylmethane type compound
- the precipitate is filtered off, and then the solubility of the triarylmethane type compound (A) is improved.
- an unreacted phenol compound (a1) or aromatic aldehyde compound (a2) is obtained from the reaction product.
- the acid catalyst used can be removed to obtain a purified triarylmethane type compound (A).
- reaction product When the reaction between the phenol compound (a1) and the aromatic aldehyde compound (a2) is carried out in an aromatic hydrocarbon solvent such as toluene or xylene, the reaction product is heated to 80 ° C. or higher to produce the triarylmethane.
- a crystal of the triarylmethane type compound (A) can be precipitated by dissolving the type compound (A) in an aromatic hydrocarbon solvent and cooling as it is.
- the poor solvent (S1) used for purification of the triarylmethane type compound (A) is, for example, water; monoalcohols such as methanol, ethanol, propanol, ethoxyethanol; n-hexane, n-heptane, n-octane, Aliphatic hydrocarbons such as cyclohixane; aromatic hydrocarbons such as toluene and xylene. These may be used alone or in combination of two or more. Of these, water, methanol, and ethoxyethanol are preferred because of the excellent solubility of the acid catalyst.
- the solvent (S2) is, for example, a monoalcohol such as methanol, ethanol, or propanol; ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,5-pentane.
- a monoalcohol such as methanol, ethanol, or propanol
- ethylene glycol 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,5-pentane.
- Polyols such as diol, 1,6-hexanediol, 1,7-heptanediol, 1,8-octanediol, 1,9-nonanediol, trimethylene glycol, diethylene glycol, polyethylene glycol, glycerin; 2-ethoxyethanol, ethylene Glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monopentyl ether, ethylene glycol dimethyl ether, Glycol ethers such as ethylene glycol ethyl methyl ether and ethylene glycol monophenyl ether; Cyclic ethers such as 1,3-dioxane and 1,4-dioxane; Glycol esters such as ethylene glycol acetate; Ketones such as acetone, methyl ethyl ketone and methyl isobutyl
- the aldehyde compound (B) only needs to be capable of forming a novolac type phenolic hydroxyl group-containing resin by causing a condensation reaction with the triarylmethane type compound (A).
- formaldehyde, paraformaldehyde, 1, Examples include 3,5-trioxane, acetaldehyde, propionaldehyde, tetraoxymethylene, polyoxymethylene, chloral, hexamethylenetetramine, furfural, glyoxal, n-butyraldehyde, caproaldehyde, allylaldehyde, crotonaldehyde, acrolein and the like.
- formaldehyde may be used alone or in combination of two or more. Among them, it is preferable to use formaldehyde because of excellent reactivity.
- Formaldehyde may be used either as formalin in an aqueous solution or as paraformaldehyde in a solid state.
- formaldehyde and other aldehyde compounds are used in combination, it is preferable to use the other aldehyde compound in a ratio of 0.05 to 1 mol with respect to 1 mol of formaldehyde.
- the novolak resin intermediate may be obtained by reacting the triarylmethane type compound (A) with the aldehyde compound (B) and other phenolic hydroxyl group-containing compound (A ′).
- the other phenolic hydroxyl group-containing compound (A ′) used here include phenol, phenylphenol, bisphenol, dihydroxybenzene, naphthol, and dihydroxynaphthalene. These may be used alone or in combination of two or more.
- the reaction molar ratio [(A) / (B)] of the triarylmethane type compound (A) and the aldehyde compound (B) can suppress excessive high molecular weight (gelation) and is suitable as a resist composition. Since a novolak type phenolic hydroxyl group-containing resin having a high molecular weight can be obtained, it is preferably in the range of 1 / 0.5 to 1 / 1.2, and in the range of 1 / 0.6 to 1 / 0.9. It is more preferable.
- the reaction molar ratio of the sum of these and the aldehyde compound (B) [(A + A ′) / (B)] is preferably in the range of 1 / 0.5 to 1 / 1.2, and more preferably in the range of 1 / 0.6 to 1 / 0.9.
- the reaction between the triarylmethane type compound (A) and the aldehyde compound (B) is preferably performed under acid catalyst conditions.
- the acid catalyst used here include acetic acid, oxalic acid, sulfuric acid, hydrochloric acid, phenolsulfonic acid, paratoluenesulfonic acid, zinc acetate, and manganese acetate. These acid catalysts may be used alone or in combination of two or more. Among these, sulfuric acid and paratoluenesulfonic acid are preferable from the viewpoint of excellent catalytic activity.
- the reaction of the triarylmethane type compound (A) and the aldehyde compound (B) may be performed in an organic solvent as necessary.
- the solvent used here include monoalcohols such as methanol, ethanol, and propanol; ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, , 6-hexanediol, 1,7-heptanediol, 1,8-octanediol, 1,9-nonanediol, trimethylene glycol, diethylene glycol, polyethylene glycol, glycerin and other polyols; 2-ethoxyethanol, ethylene glycol monomethyl ether , Ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monopentyl ether, ethylene glyco
- the reaction of the triarylmethane type compound (A) and the aldehyde compound (B) is performed, for example, in a temperature range of 60 to 140 ° C. for 0.5 to 20 hours.
- a novolak resin intermediate can be obtained by performing reprecipitation operation by adding water to the reaction product.
- the novolak resin intermediate thus obtained has a weight average molecular weight (Mw) of 8 because a phenolic hydroxyl group-containing resin suitable for a resist material is obtained, which has an excellent balance of developability, heat resistance and substrate followability.
- Mw weight average molecular weight
- the range of 000 to 30,000 is preferred.
- the polydispersity (Mw / Mn) of the phenolic hydroxyl group-containing resin is preferably in the range of 3-10.
- the weight average molecular weight (Mw) and the polydispersity (Mw / Mn) are values measured by GPC under the following conditions.
- the molecular structure of the alkene compound (C) having 9 to 24 carbon atoms is not particularly limited as long as it has an ethylenic double bond site capable of reacting with the novolak resin intermediate.
- R 4 is an aliphatic hydrocarbon group having 7 to 22 carbon atoms.
- the compound represented by these is mentioned.
- the alkene compound (C) having 9 to 24 carbon atoms may be used alone or in combination of two or more.
- R 4 in the structural formula (6) may be either a straight-chain type or a branched structure as long as it is an aliphatic hydrocarbon group having 7 to 22 carbon atoms, and is unsaturated in the structure. Either having or not having a group may be used.
- R 6 is preferably a linear alkyl group and particularly preferably has a carbon atom number in the range of 8 to 18 because it becomes a phenolic hydroxyl group-containing resin having particularly excellent substrate followability.
- the reaction ratio between the novolak resin intermediate and the alkene compound (C) having 9 to 24 carbon atoms is a phenolic hydroxyl group-containing resin having an excellent balance of developability, heat resistance and substrate followability.
- the proportion of the alkene compound (C) having 9 to 24 carbon atoms is preferably 0.5 to 30% by mass with respect to the total mass of the alkene compound (C) having 9 to 24 carbon atoms.
- the reaction between the novolak resin intermediate and the alkene compound (C) having 9 to 24 carbon atoms is preferably carried out under acid catalyst conditions.
- the acid catalyst used here include acetic acid, oxalic acid, sulfuric acid, hydrochloric acid, phenolsulfonic acid, paratoluenesulfonic acid, zinc acetate, and manganese acetate. These acid catalysts may be used alone or in combination of two or more. Among these, sulfuric acid is preferable from the viewpoint of excellent catalytic activity.
- the reaction between the novolak resin intermediate and the alkene compound (C) having 9 to 24 carbon atoms may be carried out in an organic solvent as necessary.
- the solvent used here include monoalcohols such as methanol, ethanol, and propanol; ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, , 6-hexanediol, 1,7-heptanediol, 1,8-octanediol, 1,9-nonanediol, trimethylene glycol, diethylene glycol, polyethylene glycol, glycerin and other polyols; 2-ethoxyethanol, ethylene glycol monomethyl ether , Ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monopentyl ether, ethylene
- the reaction between the novolak resin intermediate and the alkene compound (C) having 9 to 24 carbon atoms is carried out, for example, in a temperature range of 60 to 140 ° C. and for 0.5 to 20 hours.
- the desired phenolic hydroxyl group-containing resin can be obtained by adding water to the reaction product, performing reprecipitation, and washing with an organic solvent or the like as appropriate.
- the phenolic hydroxyl group-containing resin thus obtained has a weight average molecular weight (Mw) that is excellent in balance between developability, heat resistance and substrate followability, and suitable for resist materials. A range of 000 is preferred.
- the polydispersity (Mw / Mn) of the phenolic hydroxyl group-containing resin is preferably in the range of 3-10.
- the phenolic hydroxyl group-containing resin of the present invention described in detail above is excellent in solubility in general-purpose organic solvents and heat decomposability, so it can be used for various electric and electronic members such as adhesives, paints, photoresists, printed wiring boards, etc. Can be used. Moreover, since the phenolic hydroxyl group-containing resin of the present invention is excellent in alkali solubility, it is particularly suitable for resist applications and becomes a resist material excellent in photosensitivity and resolution. Furthermore, the phenolic hydroxyl group-containing resin of the present invention is excellent in heat resistance and flexibility in addition to developability, and exhibits high toughness even in a cured product reacted with a curing agent.
- a sufficiently fine resist pattern can be formed as in the case of a normal resist film, and it has characteristics that it is highly flexible and does not easily crack.
- the substrate when used for a lower layer film or a permanent film, the substrate has excellent substrate followability and has a feature that deterioration or alteration due to a heat treatment process at the time of manufacturing a semiconductor hardly occurs.
- the photosensitive composition of the present invention contains the phenolic hydroxyl group-containing resin of the present invention and a photosensitive agent as essential components.
- the photosensitive composition of the present invention may use another resin (D) in combination.
- the other resin (D) any resin can 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. .
- Examples of the other resin (D) used herein include other phenol resins (D-1) other than the phenolic hydroxyl group-containing resin, p-hydroxystyrene, and p- (1,1,1,3,3,3).
- a homopolymer or copolymer (D-2) of a hydroxy group-containing styrene compound such as -hexafluoro-2-hydroxypropyl) styrene, and the hydroxyl group of the (D-1) or (D-2) is t-butoxycarbonyl Modified with an acid-decomposable group such as benzyloxycarbonyl group (D-3), homopolymer or copolymer (D-4) of (meth) acrylic acid, norbornene compound, tetracyclododecene compound, etc.
- an alternating polymer (D-5) of alicyclic polymerizable monomer and maleic anhydride or maleimide is alternating polymer (D-5) of alicyclic poly
- Examples of the other phenol resin (D-1) include phenol novolak resin, cresol novolak resin, naphthol novolak resin, co-condensed novolak resin using various phenolic compounds, aromatic hydrocarbon formaldehyde resin-modified phenol resin, Cyclopentadiene phenol addition resin, phenol aralkyl resin (Zylok resin), naphthol aralkyl resin, trimethylol methane resin, tetraphenylol ethane resin, biphenyl-modified phenol resin (polyhydric phenol compound in which phenol nucleus is linked by bismethylene group), Biphenyl-modified naphthol resin (polyvalent naphthol compound in which phenol nucleus is linked by bismethylene group), aminotriazine-modified phenol resin (melamine, benzoguanamine, etc.
- phenol novolak resin cresol novolak resin
- naphthol novolak resin co-condensed novolak resin
- Nuclei include phenolic resins such as polyhydric phenol compound) and an alkoxy group-containing aromatic ring-modified novolac resins, which are linked (polyhydric phenol compound phenol nucleus and an alkoxy group-containing aromatic ring are connected by formaldehyde).
- phenolic resins such as polyhydric phenol compound
- alkoxy group-containing aromatic ring-modified novolac resins which are linked (polyhydric phenol compound phenol nucleus and an alkoxy group-containing aromatic ring are connected by formaldehyde).
- a cresol novolak resin or a co-condensed novolak resin of cresol and another phenolic compound is preferable because it is a photosensitive resin composition having high sensitivity and excellent heat resistance.
- 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 blending ratio of the phenolic hydroxyl group-containing resin of the present invention and the other resin (D) can be arbitrarily adjusted depending on the desired application.
- the phenolic hydroxyl group-containing resin of the present invention is excellent in photosensitivity, resolution, and heat resistance when combined with a photosensitizer. Therefore, a photosensitive composition containing this as a main component is optimal for resist applications.
- the ratio of the phenolic hydroxyl group-containing resin of the present invention in the total resin component is preferably 60% by mass or more because it is a curable composition having high photosensitivity and excellent resolution and heat resistance. It is more preferable that it is 80 mass% or more.
- the mixing ratio of the phenolic hydroxyl group-containing resin and the other resin (D) is such that the phenolic hydroxyl group-containing resin of the present invention is 3 to 80 parts by mass with respect to 100 parts by mass of the other resin (D). It is preferable that
- the photosensitive agent examples 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 blending amount of the photosensitive agent in the photosensitive composition of the present invention is a photosensitive composition having excellent photosensitivity, and therefore 5 to 50 parts by mass with respect to 100 parts by mass in total of the resin solid content of the photosensitive composition. It is preferable that the ratio is
- the photosensitive composition of the present invention may contain a surfactant for the purpose of improving the film-forming property and pattern adhesion when used for resist applications, and reducing development defects.
- a surfactant for the purpose of improving the film-forming property and pattern adhesion when used for resist applications, 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 ester compounds such as polyoxy
- the compounding amount of these surfactants is preferably in the range of 0.001 to 2 parts by mass with respect to a total of 100 parts by mass of resin solids in the photosensitive composition of the present invention.
- the photosensitive composition of the present invention is used for photoresist applications, in addition to the phenolic hydroxyl group-containing resin and the photosensitive agent of the present invention, other resins (D), surfactants, dyes, fillings may be used as necessary.
- Various additives such as a material, a crosslinking agent, and a dissolution accelerator are added and dissolved in an organic solvent to obtain a resist composition. This may be used as it is as a positive resist solution, or may be used as a positive resist film obtained by removing the solvent by applying the resist composition in a film form.
- the support film used as a resist film examples include synthetic resin films such as polyethylene, polypropylene, polycarbonate, and polyethylene terephthalate, and may be a single layer film or a plurality of laminated films.
- the surface of the support film may be a corona-treated one or a release agent.
- the organic solvent used in the resist composition of the present invention is not particularly limited.
- alkylene glycol monoalkyl such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether propylene glycol monomethyl ether, etc.
- Dialkylene glycol dialkyl ethers such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether; alkylene groups such as ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, propylene glycol monomethyl ether acetate Cole alkyl ether acetate; Ketone compounds such as acetone, 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, ethyl oxyacetate, methyl 2-hydroxy-3-methylbutanoate, 3-methoxybutyl acetate, 3-methyl-3-methoxybutyl acetate
- the resist composition of the present invention can be prepared by blending the above components and mixing them using a stirrer or the like. Moreover, when the resin composition for photoresists contains a filler and a pigment, it can adjust by disperse
- the resist composition is applied onto an object to be subjected to silicon substrate photolithography, and prebaked 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. Since the resist composition of the present invention is a positive type, 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 resist composition of the present invention has both high alkali solubility in the exposed area and high alkali resistance in the non-exposed area, it is possible to form a resist pattern with excellent resolution.
- the curable composition of the present invention contains the phenolic hydroxyl group-containing resin of the present invention and a curing agent as essential components.
- the curable composition of the present invention may use other resin (E) in addition to the phenolic hydroxyl group-containing resin of the present invention.
- resins (E) used here include, for example, various novolak resins, addition polymerization resins of alicyclic diene compounds such as dicyclopentadiene and phenol compounds, phenolic hydroxyl group-containing compounds and alkoxy group-containing aromatic compounds, Modified novolak resin, phenol aralkyl resin (Xylok resin), naphthol aralkyl resin, trimethylol methane resin, tetraphenylol ethane resin, biphenyl modified phenol resin, biphenyl modified naphthol resin, aminotriazine modified phenol resin, and various vinyl polymers Etc.
- various novolak resins such as dicyclopentadiene and phenol compounds, phenolic hydroxyl group-containing compounds and alkoxy group-containing aromatic compounds
- Modified novolak resin phenol aralkyl resin (Xylok resin), naphthol aralkyl resin, trimethylol methane resin, tetraphenyl
- 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 resin of the present invention and the other resin (E) can be arbitrarily set according to the use, but the dry etching resistance exhibited by the present invention Since the effect of being excellent in thermal decomposition resistance is more remarkably exhibited, the ratio of the other resin (E) to 0.5 to 100 parts by mass with respect to 100 parts by mass of the phenolic hydroxyl group-containing resin of the present invention Is preferred.
- the curing agent used in the present invention is, for example, a melamine compound, a guanamine compound, a glycoluril compound, a urea compound, a resole resin, 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.
- Examples of the epoxy compound include diglycidyloxynaphthalene, phenol novolac type epoxy resin, cresol novolac type epoxy resin, naphthol novolak type epoxy resin, naphthol-phenol co-condensed novolac type epoxy resin, naphthol-cresol co-condensed novolac type epoxy resin, Phenol aralkyl type epoxy resin, naphthol aralkyl type epoxy resin, 1,1-bis (2,7-diglycidyloxy-1-naphthyl) alkane, naphthylene ether type epoxy resin, triphenylmethane type epoxy resin, dicyclopentadiene- Examples include phenol addition reaction type epoxy resins, phosphorus atom-containing epoxy resins, polyglycidyl ethers of cocondensates of phenolic hydroxyl group-containing compounds and alkoxy group-containing aromatic compounds, and the like. That.
- 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 it is a curable composition having excellent curability and heat resistance in a cured product.
- curing agent in the curable composition of this invention becomes a composition excellent in sclerosis
- the ratio is preferably 0.5 to 50 parts by mass.
- the curable composition of the present invention is used for a resist underlayer film (BARC film), in addition to the phenolic hydroxyl group-containing resin and the curing agent of the present invention, other resins (E) and surface activity as necessary.
- Various additives such as an agent, a dye, a filler, a crosslinking agent, and a dissolution accelerator can be added and dissolved in an organic solvent to obtain a resist underlayer film composition.
- the organic solvent used in the resist underlayer film composition is not particularly limited.
- alkylene glycol monoalkyl such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether propylene glycol monomethyl ether, etc.
- Dialkylene glycol dialkyl ethers such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether; alkylene groups such as ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, propylene glycol monomethyl ether acetate Cole alkyl ether acetate; Ketone compounds such as acetone, 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, ethyl oxyacetate, methyl 2-hydroxy-3-methylbutanoate, 3-methoxybutyl acetate, 3-methyl-3-methoxybutyl acetate
- the resist underlayer film composition can be prepared by blending the above components and mixing them using a stirrer or the like.
- a dispersing device such as a dissolver, a homogenizer, or a three roll mill.
- the resist underlayer film composition is applied onto an object to be subjected to photolithography such as a silicon substrate, and is subjected to a temperature condition of 100 to 200 ° C. After drying, a resist underlayer film is formed by a method such as heat curing under a temperature condition of 250 to 400 ° C. Next, a resist pattern is formed on this lower layer film by performing a normal photolithography operation, and a resist pattern by a multilayer resist method can be formed by performing a dry etching process with a halogen-based plasma gas or the like.
- a resist permanent film composition can be obtained by adding various additives such as a filler, a cross-linking agent, and a dissolution accelerator and dissolving in an organic solvent.
- the organic solvent used here is the same as the organic solvent used in the resist underlayer film composition.
- a photolithography method using the resist permanent film composition includes, for example, dissolving and dispersing a resin component and an additive component in an organic solvent, and applying the solution on an object to be subjected to silicon substrate photolithography, and a temperature of 60 to 150 ° C. Pre-bake under the following temperature conditions.
- 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.
- the resist permanent film composition is positive, the target resist pattern is exposed through a predetermined mask, and the exposed portion is dissolved with an alkali developer. Thus, a resist pattern is formed.
- the permanent film made of the resist permanent film composition is, for example, a solder resist, a package material, an underfill material, a package adhesive layer such as a circuit element, an integrated circuit element-circuit board adhesive layer, an LCD, or an OELD for semiconductor devices.
- a solder resist for example, a solder resist, a package material, an underfill material, a package adhesive layer such as a circuit element, an integrated circuit element-circuit board adhesive layer, an LCD, or an OELD for semiconductor devices.
- a package adhesive layer such as a circuit element, an integrated circuit element-circuit board adhesive layer, an LCD, or an OELD for semiconductor devices.
- the number average molecular weight (Mn), weight average molecular weight (Mw), and polydispersity (Mw / Mn) of the synthesized resin are measured under the following GPC measurement conditions.
- GPC measurement conditions Measuring device: “HLC-8220 GPC” manufactured by Tosoh Corporation Column: “Shodex KF802” (8.0 mm ⁇ ⁇ 300 mm) manufactured by Showa Denko KK + “Shodex KF802” (8.0 mm ⁇ ⁇ 300 mm) manufactured by Showa Denko KK + Showa Denko Co., Ltd.
- the 13 C-NMR spectrum was measured by analyzing the DMSO-d 6 solution of the sample using “AL-400” manufactured by JEOL Ltd. and performing structural analysis. The measurement conditions for 13 C-NMR spectrum are shown below. [ 13C -NMR spectrum measurement conditions] Measurement mode: SGNNE (1H complete decoupling method of NOE elimination) Pulse angle: 45 ° C pulse Sample concentration: 30 wt% Integration count: 10,000 times
- Production Example 2 Production of triarylmethane type compound (A-2)
- White crystals of white crystals were prepared in the same manner as in Production Example 1 except that benzaldehyde 212.2 (2 mol) was used instead of 244 g (2 mol) of 4-hydroxybenzaldehyde. 413 g of triarylmethane type compound (A-2) was obtained. Formation of a compound represented by the following structural formula was confirmed by 13 C-NMR and GPC analysis. The purity calculated from the GPC chart was 98.7%.
- a GPC chart of the triarylmethane type compound (A-2) is shown in FIG. 3, and a 13 C-NMR chart is shown in FIG.
- the crude product was redissolved in acetone and reprecipitated with water. The resulting product was filtered off and vacuum dried to obtain 330 g of red powder novolak resin intermediate (1).
- a GPC chart of the novolak resin intermediate (1) is shown in FIG.
- the novolak resin intermediate (1) has a hydroxyl group equivalent of 365 g / equivalent, a number average molecular weight (Mn) of 2,909, a weight average molecular weight (Mw) of 14,426, and a polydispersity (Mw / Mn) of 4.96. there were.
- Novolak Resin Intermediate (2) instead of 348 g (1 mol) of triarylmethane type compound (A-1), 174 g (0.5 mol) of triarylmethane type compound (A-1), triarylmethane 324 g of novolak resin intermediate (2) was obtained in the same manner as in Production Example 4, except that 166 g (0.5 mol) of the type compound (A-2) was used.
- the novolak resin intermediate (2) has a hydroxyl group equivalent of 710 g / equivalent, a number average molecular weight (Mn) of 2,529, a weight average molecular weight (Mw) of 11,421, and a polydispersity (Mw / Mn) of 4.52. there were.
- Example 1 Production of phenolic hydroxyl group-containing resin (1) 30 g of the novolak resin intermediate (1) synthesized in Production Example 3 in a 300 ml four-necked flask equipped with a cooling tube and 1.5 g of 1-dodecene as a fatty chain introducing agent was dissolved in 100 ml of 2-ethoxyethanol. After adding 10 ml of sulfuric acid while cooling in an ice bath, the temperature was raised to 80 ° C. in an oil bath, and the reaction was continued by heating and stirring for 6 hours. After the reaction, water was added to the obtained solution and reprecipitation was performed to obtain a crude product.
- a methanol / n-hexane mixed solvent was added to the crude product for reprecipitation, and the resulting product was filtered and vacuum dried to obtain 29 g of a red powdery phenolic hydroxyl group-containing resin (1).
- a GPC chart of the phenolic hydroxyl group-containing resin (1) is shown in FIG.
- the number average molecular weight (Mn) of the phenolic hydroxyl group-containing resin (1) was 2,369, the weight average molecular weight (Mw) was 13,583, and the polydispersity (Mw / Mn) was 4.56.
- Example 2 Production of phenolic hydroxyl group-containing resin (2) 32 g of phenolic hydroxyl group-containing resin (2) was obtained in the same manner as in Example 1 except that 1.5 g of 1-dodecene was changed to 7.5 g of 1-dodecene. .
- a GPC chart of the phenolic hydroxyl group-containing resin (2) is shown in FIG.
- the number average molecular weight (Mn) of the phenolic hydroxyl group-containing resin (2) was 2,394, the weight average molecular weight (Mw) was 14,038, and the polydispersity (Mw / Mn) was 4.60.
- Example 3 Production of phenolic hydroxyl group-containing resin (3) 31 g of phenolic hydroxyl group-containing resin (3) was obtained in the same manner as in Example 1 except that 1.5 g of 1-dodecene was changed to 1.5 g of 1-tetradecene. .
- a GPC chart of the phenolic hydroxyl group-containing resin (3) is shown in FIG.
- the number average molecular weight (Mn) of the phenolic hydroxyl group-containing resin (3) was 2,347, the weight average molecular weight (Mw) was 13,559, and the polydispersity (Mw / Mn) was 4.54.
- Example 4 Production of phenolic hydroxyl group-containing resin (4) 29 g of phenolic hydroxyl group-containing resin (4) was obtained in the same manner as in Example 1 except that 1.5 g of 1-dodecene was changed to 1.5 g of 1-hexadecene. .
- a GPC chart of the phenolic hydroxyl group-containing resin (4) is shown in FIG.
- the number average molecular weight (Mn) of the phenolic hydroxyl group-containing resin (4) was 2,446, the weight average molecular weight (Mw) was 14,419, and the polydispersity (Mw / Mn) was 4.62.
- Example 5 Production of phenolic hydroxyl group-containing resin (5) 29 g of phenolic hydroxyl group-containing resin (5) was obtained in the same manner as in Example 1 except that 1.5 g of 1-dodecene was changed to 1.5 g of 1-octadecene. .
- a GPC chart of the phenolic hydroxyl group-containing resin (5) is shown in FIG.
- the number average molecular weight (Mn) of the phenolic hydroxyl group-containing resin (5) was 2,454, the weight average molecular weight (Mw) was 14,352, and the polydispersity (Mw / Mn) was 4.71.
- Example 6 Production of phenolic hydroxyl group-containing resin (6)
- 1-dodecene was a 56:44 (molar ratio) mixture of 1-dodecene and 1-tetradecene (“Linearene 124” manufactured by Idemitsu Kosan Co., Ltd.) 29 g of phenolic hydroxyl group-containing resin (6) was obtained in the same manner as in Example 1 except that the amount was 5 g.
- a GPC chart of the phenolic hydroxyl group-containing resin (6) is shown in FIG.
- the number average molecular weight (Mn) of the phenolic hydroxyl group-containing resin (6) was 2,370, the weight average molecular weight (Mw) was 13,329, and the polydispersity (Mw / Mn) was 4.53.
- Example 7 Production of phenolic hydroxyl group-containing resin (7) 1.5 g of 1-dodecene was mixed with 35:37:28 (molar ratio) of 1-tetradecene, 1-hexadecene and 1-octadecene (“Linearene” manufactured by Idemitsu Kosan Co., Ltd.) 148 ") 30 g of phenolic hydroxyl group-containing resin (7) was obtained in the same manner as in Example 1 except that the amount was 1.5 g.
- a GPC chart of the phenolic hydroxyl group-containing resin (7) is shown in FIG.
- the number average molecular weight (Mn) of the phenolic hydroxyl group-containing resin (7) was 2,436, the weight average molecular weight (Mw) was 14,103, and the polydispersity (Mw / Mn) was 5.79.
- Example 8 Production of phenolic hydroxyl group-containing resin (8) 1.5 g of 1-dodecene was mixed with 57:43 (molar ratio) of 1-hexadecene and 1-octadecene (“Linearene 168” manufactured by Idemitsu Kosan Co., Ltd.) Except that, 30 g of phenolic hydroxyl group-containing resin (8) was obtained in the same manner as in Example 1.
- a GPC chart of the phenolic hydroxyl group-containing resin (8) is shown in FIG.
- the number average molecular weight (Mn) of the phenolic hydroxyl group-containing resin (8) was 2,420, the weight average molecular weight (Mw) was 14,092, and the polydispersity (Mw / Mn) was 4.56.
- Example 9 Production of phenolic hydroxyl group-containing resin (9)
- a phenolic hydroxyl group-containing resin (9) was prepared in the same manner as in Example 1 except that 30 g of the novolak resin intermediate (1) was changed to 30 g of the novolak resin intermediate (2). 28 g was obtained.
- the number average molecular weight (Mn) of the phenolic hydroxyl group-containing resin (9) was 2,352, the weight average molecular weight (Mw) was 10,536, and the polydispersity (Mw / Mn) was 4.48.
- Photosensitive Composition 28 parts by mass of the phenolic hydroxyl group-containing resin was dissolved in 60 parts by mass of propylene glycol monomethyl ether acetate, and 12 parts by mass of a photosensitizing agent was added to the solution and dissolved. This was filtered through a 0.2 ⁇ m membrane filter to obtain a photosensitive composition.
- the photosensitizer was “P-200” (4,4 ′-[1- [4- [1- (4-hydroxyphenyl) -1methylethyl] phenyl] ethylidene] bisphenol, 1 mol 2-naphthoquinone-2-diazide-5-sulfonyl chloride condensate).
- composition for heat resistance test 28 parts by mass of the phenolic hydroxyl group-containing resin was dissolved in 60 parts by mass of propylene glycol monomethyl ether acetate and filtered through a 0.2 ⁇ m membrane filter to obtain a composition for heat resistance test. It was.
- the photosensitive composition obtained above was applied on a 5-inch silicon wafer with a spin coater so as to have a thickness of about 1 ⁇ m. Dried for 60 seconds. Two wafers were prepared, and one of the wafers was designated as “no exposure sample”. The other was used as an “exposed sample” and irradiated with 100 mJ / cm 2 of ghi line using a ghi line lamp (“Multi Light” manufactured by USHIO INC.), And then heat-treated at 140 ° C. for 60 seconds. .
- Both the “non-exposed sample” and the “exposed sample” were immersed in an alkaline developer (2.38% tetramethylammonium hydroxide aqueous solution) for 60 seconds and then dried on a hot plate at 110 ° C. for 60 seconds.
- the film thickness of each sample before and after immersion in the developer was measured, and the value obtained by dividing the difference by 60 was defined as alkali developability [ADR ( ⁇ / s)].
- the photosensitive composition obtained above was applied on a 5 inch silicon wafer with a spin coater so as to have a thickness of about 1 ⁇ m, and dried on a hot plate at 110 ° C. for 60 seconds.
- a mask corresponding to a resist pattern with a line-and-space ratio of 1: 1 and a line width of 1 to 10 ⁇ m set every 1 ⁇ m is brought into close contact with this wafer, and then a ghi-line lamp (“Multi Light” manufactured by USHIO INC. )) was used for irradiation with ghi rays, and heat treatment was performed at 140 ° C. for 60 seconds.
- the film was immersed in an alkaline developer (2.38% tetramethylammonium hydroxide aqueous solution) for 60 seconds, and then dried on a hot plate at 110 ° C. for 60 seconds.
- the exposure amount (Eop exposure amount) capable of faithfully reproducing the line width of 3 ⁇ m when the ghi line exposure amount was increased from 30 mJ / cm 2 to 5 mJ / cm 2 was evaluated.
- the photosensitive composition obtained above was applied on a 5-inch silicon wafer with a spin coater to a thickness of about 1 ⁇ m, and dried on a hot plate at 110 ° C. for 60 seconds.
- a photomask was placed on the obtained wafer, and an alkali development operation was performed by irradiating with 200 mJ / cm 2 of ghi line in the same manner as in the previous alkali developability evaluation.
- the composition for heat resistance test obtained above was applied on a 5-inch silicon wafer with a spin coater so as to have a thickness of about 1 ⁇ m, and dried on a hot plate at 110 ° C. for 60 seconds.
- the resin content was scraped from the obtained wafer and its glass transition temperature (Tg) was measured.
- the glass transition temperature (Tg) was measured using a differential scanning calorimeter (DSC) (“Q100” manufactured by TA Instruments Co., Ltd.) under a nitrogen atmosphere, a temperature range of ⁇ 100 to 250 ° C., and a temperature rising temperature of 10 ° C. / Performed under the condition of minutes.
- DSC differential scanning calorimeter
- the photosensitive composition obtained above was applied on a 5-inch silicon wafer with a spin coater so as to have a thickness of about 50 ⁇ m, and dried on a hot plate at 110 ° C. for 300 seconds.
- the surface of the obtained wafer was observed using a laser microscope (Keyence Co., Ltd. “VK-X200”).
- the photosensitive composition obtained above was applied onto a polyimide film having a thickness of 50 ⁇ m with a spin coater so as to have a thickness of about 5 ⁇ m, and dried on a hot plate at 110 ° C. for 300 seconds.
- the obtained laminated film was bent at 180 degrees, and the state of the bent portion was observed using a laser microscope (“VK-X200” manufactured by Keyence Corporation). As evaluated.
- curable composition 16 parts by mass of the phenolic hydroxyl group-containing resin and 4 parts by mass of a curing agent (“1,3,4,6-tetrakis (methoxymethyl) glycoluril” manufactured by Tokyo Chemical Industry Co., Ltd.) were added to propylene glycol monomethyl. This was dissolved in 30 parts by mass of ether acetate and filtered through a 0.2 ⁇ m membrane filter to obtain a curable composition.
- a curing agent 1,3,4,6-tetrakis (methoxymethyl) glycoluril
- composition for heat resistance test 28 parts by mass of the phenolic hydroxyl group-containing resin was dissolved in 60 parts by mass of propylene glycol monomethyl ether acetate and filtered through a 0.2 ⁇ m membrane filter to obtain a composition for heat resistance test. It was.
- the curable composition obtained above was applied on a 5-inch silicon wafer with a spin coater to a thickness of about 1 ⁇ m, dried on a hot plate at 110 ° C. for 60 seconds, and then at 160 ° C., Heat treatment was performed for 60 seconds.
- the resin content was scraped from the obtained wafer and its glass transition temperature (Tg) was measured.
- the glass transition temperature (Tg) was measured using a differential scanning calorimeter (DSC) (“Q100” manufactured by TA Instruments Co., Ltd.) under a nitrogen atmosphere, a temperature range of ⁇ 100 to 250 ° C., and a temperature rising temperature of 10 ° C. / Performed under the condition of minutes.
- DSC differential scanning calorimeter
- Substrate following property The curable composition obtained above was applied on a 5-inch silicon wafer by a spin coater so as to have a thickness of about 50 ⁇ m, and dried on a hot plate at 110 ° C. for 300 seconds. The surface of the obtained wafer was observed using a laser microscope (Keyence Co., Ltd. “VK-X200”).
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Abstract
Description
で表される構造部位(α)、又は、下記構造式(3)
で表される構造部位(β)の何れかである。]
で表される構造部位を繰り返し単位として有し、樹脂中に存在するR2又はR3のうち少なくとも一つが炭素原子数9~24の脂肪族炭化水素基であることを特徴とするフェノール性水酸基含有樹脂に関する。
の何れかで表される分子構造を有するトリアリールメタン型化合物(A)とアルデヒド化合物(B)とを必須の成分として反応させて得られるノボラック樹脂中間体と、炭素原子数9~24のアルケン化合物(C)とを反応させるフェノール性水酸基含有樹脂の製造方法に関する。
で表される構造部位(α)、又は、下記構造式(3)
で表される構造部位(β)の何れかである。]
で表される構造部位を繰り返し単位として有し、樹脂中に存在するR2又はR3のうち少なくとも一つが炭素原子数9~24の脂肪族炭化水素基であることを特徴とする。
の何れかで表される分子構造を有するトリアリールメタン型化合物(A)とアルデヒド化合物(B)とを必須の成分として反応させて得られるノボラック樹脂中間体と、炭素原子数9~24のアルケン化合物(C)とを反応させる方法にて製造することができる。
[GPCの測定条件]
測定装置:東ソー株式会社製「HLC-8220 GPC」
カラム:昭和電工株式会社製「Shodex KF802」(8.0mmФ×300mm)+昭和電工株式会社製「Shodex KF802」(8.0mmФ×300mm)
+昭和電工株式会社製「Shodex KF803」(8.0mmФ×300mm)+昭和電工株式会社製「Shodex KF804」(8.0mmФ×300mm)
カラム温度:40℃
検出器: RI(示差屈折計)
データ処理:東ソー株式会社製「GPC-8020モデルIIバージョン4.30」
展開溶媒:テトラヒドロフラン
流速:1.0mL/分
試料:樹脂固形分換算で0.5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(100μl)
標準試料:下記単分散ポリスチレン
(標準試料:単分散ポリスチレン)
東ソー株式会社製「A-500」
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」
[GPCの測定条件]
測定装置:東ソー株式会社製「HLC-8220 GPC」
カラム:昭和電工株式会社製「Shodex KF802」(8.0mmФ×300mm)+昭和電工株式会社製「Shodex KF802」(8.0mmФ×300mm)
+昭和電工株式会社製「Shodex KF803」(8.0mmФ×300mm)+昭和電工株式会社製「Shodex KF804」(8.0mmФ×300mm)
カラム温度:40℃
検出器: RI(示差屈折計)
データ処理:東ソー株式会社製「GPC-8020モデルIIバージョン4.30」
展開溶媒:テトラヒドロフラン
流速:1.0mL/分
試料:樹脂固形分換算で0.5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
注入量:0.1mL
標準試料:下記単分散ポリスチレン
(標準試料:単分散ポリスチレン)
東ソー株式会社製「A-500」
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」
[13C-NMRスペクトル測定条件]
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
試料濃度:30wt%
積算回数:10000回
冷却管を設置した3000mlの4口フラスコに、2,5-キシレノール586.4g(4.8mol)、4-ヒドロキシベンズアルデヒド244g(2mol)を仕込み、2-エトキシエタノール1000mlに溶解させた。氷浴中で冷却しながら硫酸30mlを添加した後、マントルヒーターで100℃まで加熱し、2時間攪拌しながら反応させた。反応後、得られた溶液に水を加えて粗成生物を再沈殿させた。得られた粗生成物をアセトンに再溶解し、さらに水で再沈殿させた後、沈殿物を濾別して真空乾燥を行い、白色結晶のトリアリールメタン型化合物(A-1)213gを得た。13C-NMR及びGPC分析により下記構造式で表される化合物の生成を確認した。また、GPCチャート図から算出される純度は98.2%であった。トリアリールメタン型化合物(A-1)のGPCチャートを図1に、13C-NMRチャートを図2に示す。
4-ヒドロキシベンズアルデヒド244g(2mol)に代えて、ベンズアルデヒド212.2(2mol)を用いた以外は製造例1と同様にして、白色結晶のトリアリールメタン型化合物(A-2)413gを得た。13C-NMR及びGPC分析により下記構造式で表される化合物の生成を確認した。また、GPCチャート図から算出される純度は98.7%であった。トリアリールメタン型化合物(A-2)のGPCチャートを図3に、13C-NMRチャートを図4に示す。
冷却管を設置した3000mlの4口フラスコに前記トリアリールメタン型化合物(A-1)348g(1mol)を仕込んだ後、2-エトキシエタノール500ml、酢酸500mlに溶解させた。氷浴中で冷却しながら硫酸50mlを添加した後、92%パラホルムアルデヒド33g(1mol)を仕込み、オイルバスで80℃に昇温した。10時間加熱、攪拌を継続し反応させ、得られた反応混合物に水を加えて再沈殿操作を行い粗生成物を得た。粗生成物をアセトンに再溶解し、さらに水で再沈殿操作を行った後、得られた生成物を濾別、真空乾燥を行い赤色粉末のノボラック樹脂中間体(1)330gを得た。ノボラック樹脂中間体(1)のGPCチャートを図3に示す。ノボラック樹脂中間体(1)の水酸基当量は365g/当量、数平均分子量(Mn)は2,909、重量平均分子量(Mw)は14,426、多分散度(Mw/Mn)は4.96であった。
トリアリールメタン型化合物(A-1)348g(1mol)に代えて、トリアリールメタン型化合物(A-1)174g(0.5mol)、トリアリールメタン型化合物(A-2)166g(0.5mol)を用いた以外は製造例4と同様にして、ノボラック樹脂中間体(2)324gを得た。ノボラック樹脂中間体(2)の水酸基当量は710g/当量、数平均分子量(Mn)は2,529、重量平均分子量(Mw)は11,421、多分散度(Mw/Mn)は4.52であった。
冷却管を設置した300mlの4口フラスコに製造例3で合成したノボラック樹脂中間体(1)30g、脂肪鎖導入剤として1-ドデセン1.5gを仕込んだ後、2-エトキシエタノール100mlに溶解させた。氷浴中で冷却しながら硫酸10mlを添加した後、オイルバスで80℃に昇温し、6時間加熱、攪拌を継続し反応させた。反応後、得られた溶液に水を加えて再沈殿操作を行い粗生成物を得た。粗生成物にメタノール/n-ヘキサン混合溶剤を加えて再沈殿操作を行い、得られた生成物を濾別、真空乾燥を行い赤色粉末のフェノール性水酸基含有樹脂(1)29gを得た。フェノール性水酸基含有樹脂(1)のGPCチャートを図4に示す。フェノール性水酸基含有樹脂(1)の数平均分子量(Mn)は2,369、重量平均分子量(Mw)は13,583、多分散度(Mw/Mn)は4.56であった。
1-ドデセン1.5gを1-ドデセン7.5gとした以外は実施例1と同様にして、フェノール性水酸基含有樹脂(2)32gを得た。フェノール性水酸基含有樹脂(2)のGPCチャートを図5に示す。フェノール性水酸基含有樹脂(2)の数平均分子量(Mn)は2,394、重量平均分子量(Mw)は14,038、多分散度(Mw/Mn)は4.60であった。
1-ドデセン1.5gを1-テトラデセン1.5gとした以外は実施例1と同様にして、フェノール性水酸基含有樹脂(3)31gを得た。フェノール性水酸基含有樹脂(3)のGPCチャートを図6に示す。フェノール性水酸基含有樹脂(3)の数平均分子量(Mn)は2,347、重量平均分子量(Mw)は13,559、多分散度(Mw/Mn)は4.54であった。
1-ドデセン1.5gを1-ヘキサデセン1.5gとした以外は実施例1と同様にして、フェノール性水酸基含有樹脂(4)29gを得た。フェノール性水酸基含有樹脂(4)のGPCチャートを図7に示す。フェノール性水酸基含有樹脂(4)の数平均分子量(Mn)は2,446、重量平均分子量(Mw)は14,419、多分散度(Mw/Mn)は4.62であった。
1-ドデセン1.5gを1-オクタデセン1.5gとした以外は実施例1と同様にして、フェノール性水酸基含有樹脂(5)29gを得た。フェノール性水酸基含有樹脂(5)のGPCチャートを図8に示す。フェノール性水酸基含有樹脂(5)の数平均分子量(Mn)は2,454、重量平均分子量(Mw)は14,352、多分散度(Mw/Mn)は4.71であった。
1-ドデセン1.5gを1-ドデセンと1-テトラデセンとの56:44(モル比)混合物(出光興産株式会社製「リニアレン124」)1.5gとした以外は実施例1と同様にして、フェノール性水酸基含有樹脂(6)29gを得た。フェノール性水酸基含有樹脂(6)のGPCチャートを図9に示す。フェノール性水酸基含有樹脂(6)の数平均分子量(Mn)は2,370、重量平均分子量(Mw)は13,329、多分散度(Mw/Mn)は4.53であった。
1-ドデセン1.5gを1-テトラデセン、1-ヘキサデセン、1-オクタデセンの35:37:28(モル比)混合物(出光興産株式会社製「リニアレン148」)1.5gとした以外は実施例1と同様にして、フェノール性水酸基含有樹脂(7)30gを得た。フェノール性水酸基含有樹脂(7)のGPCチャートを図10に示す。フェノール性水酸基含有樹脂(7)の数平均分子量(Mn)は2,436、重量平均分子量(Mw)は14,103、多分散度(Mw/Mn)は5.79であった。
1-ドデセン1.5gを1-ヘキサデセンと1-オクタデセンの57:43(モル比)混合物(出光興産株式会社製「リニアレン168」)1.5gとした以外は実施例1と同様にして、フェノール性水酸基含有樹脂(8)30gを得た。フェノール性水酸基含有樹脂(8)のGPCチャートを図11に示す。フェノール性水酸基含有樹脂(8)の数平均分子量(Mn)は2,420、重量平均分子量(Mw)は14,092、多分散度(Mw/Mn)は4.56であった。
ノボラック樹脂中間体(1)30gをノボラック樹脂中間体(2)30gとした以外は実施例1と同様にして、フェノール性水酸基含有樹脂(9)28gを得た。フェノール性水酸基含有樹脂(9)の数平均分子量(Mn)は2,352、重量平均分子量(Mw)は10,536、多分散度(Mw/Mn)は4.48であった。
冷却管を設置した300mlの4口フラスコにメタクレゾール13.0g(0.12mol)、パラクレゾール8.6g(0.08mol)、3-ペンタデシルフェノール6.1g(0.02mol)を仕込んだ後、2-エトキシエタノール15ml、酢酸15mlに溶解させた。氷浴中で冷却しながら硫酸10mlを添加した後、92%パラホルムアルデヒド6.5g(0.2mol)を仕込んだ。オイルバスで80℃まで昇温し、10時間加熱、攪拌を継続し反応させた。反応後、得られた溶液に水を加えて粗生成物を再沈殿させた。得られた粗生成物をアセトンに再溶解し、さらに水で再沈殿させた後、沈殿物を濾別して真空乾燥し、黄色粉末のフェノール性水酸基含有樹脂(1’)24.6gを得た。フェノール性水酸基含有樹脂(1’)の数平均分子量(Mn)は1,792、重量平均分子量(Mw)は11,701、多分散度(Mw/Mn)は6.53であった。
実施例1~9、比較製造例1で得たフェノール性水酸基含有樹脂について、下記の要領で評価した。結果を表1に示す。
前記フェノール性水酸基含有樹脂28質量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60質量部に溶解させ、この溶液に感光剤12質量部を加えて溶解させた。これを0.2μmのメンブレンフィルターで濾過し、感光性組成物を得た。
感光剤は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)を用いた。
前記フェノール性水酸基含有樹脂28質量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60質量部に溶解させ、これを0.2μmのメンブレンフィルターで濾過し、耐熱性試験用組成物を得た。
先で得た感光性組成物を5インチシリコンウェハー上に約1μmの厚さになるようにスピンコーターで塗布し、110℃のホットプレート上で60秒乾燥させた。このウェハーを2枚用意し、一方を「露光なしサンプル」とした。他方を「露光有サンプル」としてghi線ランプ(ウシオ電機株式会社製「マルチライト」)を用いて100mJ/cm2のghi線を照射したのち、140℃、60秒間の条件で加熱処理を行った。
「露光なしサンプル」と「露光有サンプル」の両方をアルカリ現像液(2.38%水酸化テトラメチルアンモニウム水溶液)に60秒間浸漬した後、110℃のホットプレート上で60秒乾燥させた。各サンプルの現像液浸漬前後の膜厚を測定し、その差分を60で除した値をアルカリ現像性[ADR(Å/s)]とした。
先で得た感光性組成物を5インチシリコンウェハー上に約1μmの厚さになるようにスピンコーターで塗布し、110℃のホットプレート上で60秒乾燥させた。このウェハー上にラインアンドスペースが1:1であり、ライン幅が1~10μmまで1μmごとに設定されたレジストパターン対応のマスクを密着させた後、ghi線ランプ(ウシオ電機株式会社製「マルチライト」)を用いてghi線を照射し、140℃、60秒間の条件で加熱処理を行った。次いで、アルカリ現像液(2.38%水酸化テトラメチルアンモニウム水溶液)に60秒間浸漬した後、110℃のホットプレート上で60秒乾燥させた。
ghi線露光量を30mJ/cm2から5mJ/cm2毎に増加させた場合の、ライン幅3μmを忠実に再現することのできる露光量(Eop露光量)を評価した。
先で得た感光性組成物を5インチシリコンウェハー上に約1μmの厚さになるようにスピンコーターで塗布し、110℃のホットプレート上で60秒乾燥させた。得られたウェハー上にフォトマスクを乗せ、先のアルカリ現像性評価の場合と同様の方法でghi線200mJ/cm2を照射し、アルカリ現像操作を行った。レーザーマイクロスコープ(株式会社キーエンス製「VK-X200」)を用いてパターン状態を確認し、L/S=5μmで解像できているものを○、L/S=5μmで解像できていないものを×として評価した。
先で得た耐熱性試験用組成物を5インチシリコンウェハー上に約1μmの厚さになるようにスピンコーターで塗布し、110℃のホットプレート上で60秒乾燥させた。得られたウェハーより樹脂分をかきとり、そのガラス転移温度(Tg)を測定した。ガラス転移温度(Tg)の測定は示差走査熱量計(DSC)(株式会社TAインスツルメント製「Q100」)を用いて、窒素雰囲気下、温度範囲-100~250℃、昇温温度10℃/分の条件で行った。
先で得た感光性組成物を5インチシリコンウェハー上に約50μmの厚さになるようにスピンコーターで塗布し、110℃のホットプレート上で300秒乾燥させた。得られたウェハーの表面をレーザーマイクロスコープ(株式会社キーエンス製「VK-X200」)を用いて観察し、クラックが無い場合を○、クラックがある場合を×として評価した。
先で得た感光性組成物を厚さ50μmのポリイミドフィルム上に約5μmの厚さになるようにスピンコーターで塗布し、110℃のホットプレート上で300秒乾燥させた。得られた積層フィルムを180度に折り曲げて、折り曲げ箇所の状態をレーザーマイクロスコープ(株式会社キーエンス製「VK-X200」)を用いて観察し、クラックが無い場合を○、クラックがある場合を×として評価した。
実施例1~9、比較製造例1で得たフェノール性水酸基含有樹脂について、下記の要領で評価した。結果を表2に示す。
前記フェノール性水酸基含有樹脂16質量部、硬化剤(東京化成工業株式会社製「1,3,4,6-テトラキス(メトキシメチル)グリコールウリル」)4質量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30質量部に溶解させ、これを0.2μmのメンブレンフィルターで濾過し、硬化性組成物を得た。
前記フェノール性水酸基含有樹脂28質量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60質量部に溶解させ、これを0.2μmのメンブレンフィルターで濾過し、耐熱性試験用組成物を得た。
先で得た硬化性組成物を5インチシリコンウェハー上に約1μmの厚さになるようにスピンコーターで塗布し、110℃のホットプレート上で60秒乾燥させた。このウェハーを2枚用意し、一方を「未硬化サンプル」とした。他方を「硬化サンプル」として160℃、60秒間の条件で加熱処理を行った。
「未硬化サンプル」と「硬化サンプル」の両方をアルカリ現像液(2.38%水酸化テトラメチルアンモニウム水溶液)に60秒間浸漬した後、110℃のホットプレート上で60秒乾燥させた。各サンプルの現像液浸漬前後の膜厚を測定し、その差分を60で除した値をアルカリ現像性[ADR(Å/s)]とした。
先で得た硬化性組成物を5インチシリコンウェハー上に約1μmの厚さになるようにスピンコーターで塗布し、110℃のホットプレート上で60秒乾燥させた後、160℃、60秒間の条件で加熱処理を行った。得られたウェハーより樹脂分をかきとり、そのガラス転移温度(Tg)を測定した。ガラス転移温度(Tg)の測定は示差走査熱量計(DSC)(株式会社TAインスツルメント製「Q100」)を用いて、窒素雰囲気下、温度範囲-100~250℃、昇温温度10℃/分の条件で行った。
先で得た硬化性組成物を5インチシリコンウェハー上に約50μmの厚さになるようにスピンコーターで塗布し、110℃のホットプレート上で300秒乾燥させた。得られたウェハーの表面をレーザーマイクロスコープ(株式会社キーエンス製「VK-X200」)を用いて観察し、クラックが無い場合を○、クラックがある場合を×として評価した。
Claims (8)
- 下記構造式(1)
で表される構造部位(α)、又は、下記構造式(3)
で表される構造部位(β)の何れかである。]
で表される構造部位を繰り返し単位として有し、樹脂中に存在するR2又はR3のうち少なくとも一つが炭素原子数9~24の脂肪族炭化水素基であることを特徴とするフェノール性水酸基含有樹脂。 - Xの20モル%以上が、kの値が1である構造部位である請求項1記載のフェノール性水酸基含有樹脂。
- 請求項1又は2に記載のフェノール性水酸基含有樹脂と感光剤とを含有する感光性組成物。
- 請求項3記載の感光性組成物からなるレジスト膜。
- 請求項1又は2に記載のフェノール性水酸基含有樹脂と硬化剤とを含有する硬化性組成物。
- 請求項5記載の硬化性組成物の硬化物。
- 請求項5記載の硬化性組成物からなるレジスト膜。
- 下記構造式(4)又は(5)
の何れかで表される分子構造を有するトリアリールメタン型化合物(A)とアルデヒド化合物(B)とを必須の成分として反応させて得られるノボラック樹脂中間体と、炭素原子数9~24のアルケン化合物(C)とを反応させるフェノール性水酸基含有樹脂の製造方法。
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