WO2018066373A1 - フェノール性水酸基含有樹脂及びレジスト材料 - Google Patents
フェノール性水酸基含有樹脂及びレジスト材料 Download PDFInfo
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- WO2018066373A1 WO2018066373A1 PCT/JP2017/034063 JP2017034063W WO2018066373A1 WO 2018066373 A1 WO2018066373 A1 WO 2018066373A1 JP 2017034063 W JP2017034063 W JP 2017034063W WO 2018066373 A1 WO2018066373 A1 WO 2018066373A1
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- phenolic hydroxyl
- group
- hydrocarbon group
- hydroxyl group
- resin
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- KEIFWROAQVVDBN-UHFFFAOYSA-N C(C1)C=Cc2c1cccc2 Chemical compound C(C1)C=Cc2c1cccc2 KEIFWROAQVVDBN-UHFFFAOYSA-N 0.000 description 1
- 0 CC(C)C(C)(C(C)*)N*=C Chemical compound CC(C)C(C)(C(C)*)N*=C 0.000 description 1
- BSZXAFXFTLXUFV-UHFFFAOYSA-N CC(c1ccccc1)c1ccccc1 Chemical compound CC(c1ccccc1)c1ccccc1 BSZXAFXFTLXUFV-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B69/00—Dyes not provided for by a single group of this subclass
- C09B69/10—Polymeric dyes; Reaction products of dyes with monomers or with macromolecular compounds
- C09B69/103—Polymeric dyes; Reaction products of dyes with monomers or with macromolecular compounds containing a diaryl- or triarylmethane dye
-
- 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
- C08L61/14—Modified phenol-aldehyde condensates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B11/00—Diaryl- or thriarylmethane dyes
- C09B11/04—Diaryl- or thriarylmethane dyes derived from triarylmethanes, i.e. central C-atom is substituted by amino, cyano, alkyl
- C09B11/06—Hydroxy derivatives of triarylmethanes in which at least one OH group is bound to an aryl nucleus and their ethers or esters
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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
Definitions
- the present invention relates to a phenolic hydroxyl group-containing resin excellent in heat resistance and alkali developability as well as crack resistance at the time of thick film formation, a photosensitive composition containing the same, a curable composition, and a resist material.
- a resin material for forming a pattern requires high developability for forming a fine pattern accurately and with high production efficiency on a highly integrated semiconductor.
- applications such as underlayer films, antireflection films, BARC films, and hard masks, in addition to dry etching resistance and low reflectivity, it is possible to form thick films of several tens of microns in the most advanced fields, and cracks and cracks do not occur. Is required.
- the phenolic hydroxyl group-containing resin most widely used for photoresist applications is of the cresol novolac type, but it is not capable of meeting the performance requirements of today's increasingly sophisticated and diversified products, and has heat resistance and developability. In addition to being insufficient, cracking occurs when a thick film is formed, so that it cannot be used for thick film applications (see Patent Document 1).
- the problem to be solved by the present invention is a phenolic hydroxyl group-containing resin that is excellent in heat resistance and alkali developability as well as crack resistance at the time of forming a thick film, a photosensitive composition containing the same, and a curable composition And a resist material.
- a triarylmethane type phenolic hydroxyl group-containing compound and a phenol or a phenol compound having an aliphatic hydrocarbon group having 1 to 7 carbon atoms are obtained.
- a phenolic hydroxyl group-containing resin obtained by reacting an alkene compound having 8 to 24 carbon atoms with a novolak resin intermediate used as a reaction raw material provides not only heat resistance and alkali developability, but also resistance to cracking when forming a thick film. Has been found to be excellent, and the present invention has been completed.
- the present invention has the following structural formula (1) or (2)
- R 1 is any one of a hydrogen atom, an aliphatic hydrocarbon group, and an aromatic ring-containing hydrocarbon group.
- k is 0, 1, or 2.
- R 2 and R 3 are each independently an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group or a halogen atom
- l is each independently 0 or an integer of 1 to 4
- m is 0 or An integer of 1 to 5
- n is 0 or an integer of 1 to 7.
- a structural portion ( ⁇ ) represented by the following structural formula (3)
- R 1 is any one of a hydrogen atom, an aliphatic hydrocarbon group, and an aromatic ring-containing hydrocarbon group.
- R 4 is a hydrogen atom or an aliphatic hydrocarbon group having 1 to 7 carbon atoms.
- R 5 Is a hydrogen atom or an aliphatic hydrocarbon group having 8 to 24 carbon atoms.
- at least one of R 2 , R 3 , and R 5 present in the resin is an aliphatic hydrocarbon group having 8 to 24 carbon atoms.
- a phenolic hydroxyl group-containing resin is any one of a hydrogen atom, an aliphatic hydrocarbon group, and an aromatic ring-containing hydrocarbon group.
- the present invention further includes the following structural formula (4) or (5)
- the reaction material is a triarylmethane type compound (A) having a molecular structure represented by formula (A), a phenol or a phenol compound (B) having an aliphatic hydrocarbon group having 1 to 7 carbon atoms, and an aldehyde compound (C).
- the present invention relates to a phenolic hydroxyl group-containing resin which is a reaction product of a novolak resin intermediate (M) and an alkene compound (D) having 8 to 24 carbon atoms.
- 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 material using 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 material using the curable composition.
- a phenolic hydroxyl group-containing resin excellent in crack resistance at the time of thick film formation in addition to heat resistance and alkali developability, a phenolic hydroxyl group-containing resin excellent in crack resistance at the time of thick film formation, a photosensitive composition containing the same, a curable composition, and a resist material 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 13 C-NMR chart of the triarylmethane compound (A-1) obtained in Production Example 1.
- FIG. 3 is a GPC chart of the phenolic hydroxyl group-containing resin (1) obtained in Example 1.
- FIG. 4 is a GPC chart of the phenolic hydroxyl group-containing resin (2) obtained in Example 2.
- FIG. 5 is a GPC chart of the phenolic hydroxyl group-containing resin (3) obtained in Example 3.
- FIG. 6 is a GPC chart of the phenolic hydroxyl group-containing resin (4) obtained in Example 4.
- FIG. 7 is a GPC chart of the phenolic hydroxyl group-containing resin (5) obtained in Example 5.
- the phenolic hydroxyl group-containing resin of the present invention has the following structural formula (1) or (2)
- R 1 is any one of a hydrogen atom, an aliphatic hydrocarbon group, and an aromatic ring-containing hydrocarbon group.
- k is 0, 1, or 2.
- R 2 and R 3 are each independently an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group or a halogen atom
- l is each independently 0 or an integer of 1 to 4
- m is 0 or An integer of 1 to 5
- n is 0 or an integer of 1 to 7.
- a structural portion ( ⁇ ) represented by the following structural formula (3)
- R 1 is any one of a hydrogen atom, an aliphatic hydrocarbon group, and an aromatic ring-containing hydrocarbon group.
- R 4 is a hydrogen atom or an aliphatic hydrocarbon group having 1 to 7 carbon atoms.
- R 5 Is a hydrogen atom or an aliphatic hydrocarbon group having 8 to 24 carbon atoms.
- at least one of R 2 , R 3 , and R 5 present in the resin is an aliphatic hydrocarbon group having 8 to 24 carbon atoms. It is characterized by.
- the phenolic hydroxyl group-containing resin of the present invention has a highly symmetrical and rigid structural portion ( ⁇ ) as a repeating unit, and has a high density of phenolic hydroxyl groups, and therefore has high heat resistance and excellent developability. Has characteristics.
- the present invention has a resin design in which the structural site ( ⁇ ) is a repeating unit in addition to the structural site ( ⁇ ), and by introducing an aliphatic hydrocarbon group having 8 to 24 carbon atoms into the resin structure, While maintaining heat resistance and developability, it succeeded in improving crack resistance during thick film formation.
- R 1 in the structural formulas (1), (2), and (3) is any one of a hydrogen atom, an aliphatic hydrocarbon group, and an aromatic ring-containing hydrocarbon group.
- the aliphatic hydrocarbon 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.
- Examples of the aromatic ring-containing hydrocarbon group 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. It is done.
- R 1 is preferably a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and is preferably a hydrogen atom, because it becomes a phenolic hydroxyl group-containing resin having an excellent balance of developability, heat resistance, and crack resistance. It is more preferable.
- R 1 is any one of a hydrogen atom, an aliphatic hydrocarbon group, and an aromatic ring-containing hydrocarbon group.
- k is 0, 1, or 2.
- R 2 and R 3 are each independently an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group or a halogen atom, l is each independently 0 or an integer of 1 to 4, and m is 0 or It is an integer from 1 to 5.
- R 1 is any one of a hydrogen atom, an aliphatic hydrocarbon group, and an aromatic ring-containing hydrocarbon group.
- k is 0, 1, or 2.
- R 2 and R 3 are each independently an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group, or a halogen atom, l is each independently 0 or an integer of 1 to 4, and n is 0 or It is an integer from 1 to 7. ]
- all of the structural sites ( ⁇ ) present in the resin may have the same structure or may have a plurality of different structures.
- it becomes phenolic hydroxyl group containing resin excellent in the balance of developability, heat resistance, and crack resistance it is preferable to have the structure part represented by the said Structural formula (1).
- the value of k in the structural formulas (1) and (2) is preferably 1. When k is 1, it is preferable that the bonding positions of the three phenolic hydroxyl groups in the structural formula (1) are all in the para position with respect to the methine group that links the three aromatic rings.
- R 2 in the structural formulas (1) and (2) is each independently an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group, or a halogen atom, and each l is independently 0 or 1 It is an integer of ⁇ 4.
- 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
- two R 2 are alkyl groups having 1 to 3 carbon atoms.
- the other R 2 is preferably a hydrogen atom or an aliphatic hydrocarbon group having 8 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 (1) and (2) is each independently an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group, or a halogen atom, and m is 0 or 1-5.
- An integer, n is 0 or an integer of 1-7.
- 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 crack resistance.
- R 4 in the structural formula (3) is a hydrogen atom or an aliphatic hydrocarbon group having 1 to 7 carbon atoms
- R 5 is a hydrogen atom or an aliphatic group having 8 to 24 carbon atoms. It is a hydrocarbon group.
- These aliphatic hydrocarbon groups may be either linear or branched, and may have either an unsaturated group in the structure or not.
- R 4 is preferably an aliphatic hydrocarbon group having 1 to 4 carbon atoms, and is a methyl group, because it becomes a phenolic hydroxyl group-containing resin having an excellent balance of developability, heat resistance and crack resistance. It is preferable.
- the substitution position is preferably a meta position with respect to the phenolic hydroxyl group.
- the abundance ratio between the structural site ( ⁇ ) and the structural site ( ⁇ ) is appropriately changed according to the desired resin performance and application.
- the abundance ratio [( ⁇ ) / ( ⁇ )] is in the range of 90/10 to 30/70. It is preferably in the range of 80/20 to 40/60.
- R 2 , R 3 and R 5 present in the resin is an aliphatic hydrocarbon group having 8 to 24 carbon atoms.
- 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.
- an aliphatic hydrocarbon group having 8 to 20 carbon atoms is preferable because it becomes a phenolic hydroxyl group-containing resin having an excellent balance of developability, heat resistance and crack resistance.
- the structure is preferably a linear alkyl group.
- the proportion of the aliphatic hydrocarbon group having 8 to 24 carbon atoms is a phenolic hydroxyl group-containing resin having an excellent balance of developability, heat resistance and crack resistance, in 100 parts by mass of the phenolic hydroxyl group-containing resin,
- the proportion of the aliphatic hydrocarbon group having 8 to 24 carbon atoms is preferably 0.5 to 30% by mass.
- 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)
- the reaction material is a triarylmethane type compound (A) having a molecular structure represented by formula (A), a phenol or a phenol compound (B) having an aliphatic hydrocarbon group having 1 to 7 carbon atoms, and an aldehyde compound (C). It can be produced by a method of reacting the novolak resin intermediate (M) with the alkene compound (D) having 8 to 24 carbon atoms.
- 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 the balance of developability, heat resistance, and crack resistance, what has the molecular structure represented by the said Structural formula (4) is preferable.
- the value of k is preferably 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.
- a compound having any of an aliphatic hydrocarbon group, an aromatic ring-containing hydrocarbon group, an alkoxy group, and a halogen atom at the 2,5-position of phenol is preferable because it becomes a phenolic hydroxyl group-containing resin having excellent heat resistance.
- a compound having an alkyl group having 1 to 3 carbon atoms in the 2,5-position 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.
- benzaldehyde, salicylaldehyde, m-hydroxybenzaldehyde, and p-hydroxybenzaldehyde are preferable, and salicylaldehyde, m-hydroxybenzaldehyde, and p-hydroxybenzaldehyde are more preferable.
- the reaction molar ratio [(a1) / (a2)] of the phenol compound (a1) and the aromatic aldehyde compound (a2) provides the target triarylmethane type compound (A) with 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 aliphatic hydrocarbon group having 1 to 7 carbon atoms is either a straight-chain type or a branched structure. However, it may be either having or not having an unsaturated group in the structure.
- the phenolic compound (B) preferably has an aliphatic hydrocarbon group having 1 to 4 carbon atoms because it becomes a phenolic hydroxyl group-containing resin having an excellent balance of developability, heat resistance and crack resistance. It preferably has a group.
- the substitution position is preferably a meta position with respect to the phenolic hydroxyl group.
- the reaction ratio between the triarylmethane type compound (A) and the phenol compound (B) is appropriately changed according to the desired resin performance and application. Among them, since it becomes a phenolic hydroxyl group-containing resin having an excellent balance of developability, heat resistance and crack resistance, the molar ratio [(A) / (B)] of both is in the range of 90/10 to 30/70. It is preferably in the range of 80/20 to 40/60.
- the aldehyde compound (C) 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) and the phenol compound (B).
- 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 (M) is obtained by using, in addition to the triarylmethane type compound (A), the phenol compound (B) and the aldehyde compound (C), other phenolic hydroxyl group-containing compound (E) as a reaction raw material. It may be what you do.
- the other phenolic hydroxyl group-containing compound (E) used here include phenol, dihydroxybenzene, phenylphenol, bisphenol, naphthol, and dihydroxynaphthalene. These may be used alone or in combination of two or more.
- the effect of the present invention is sufficiently exerted, and therefore the total of 100 parts by mass of the phenolic hydroxyl group-containing compound raw material of the novolak resin intermediate (M).
- the total amount of the triarylmethane type compound (A) and the phenolic compound (B) is preferably 50 parts by mass or more, and more preferably 80 parts by mass or more.
- the reaction molar ratio [[(A) + (B)] / (C)] of the triarylmethane type compound (A), the phenol compound (B), and the aldehyde compound (C) is excessively high ( Gelling) can be suppressed, and a phenolic hydroxyl group-containing resin having an appropriate molecular weight can be obtained as a resist composition. Therefore, the range of 1 / 0.5 to 1 / 1.2, preferably 1 / 0.0. A range of 6 to 1 / 0.9 is more preferable.
- the reaction molar ratio [(P) / (C)] of the total (P) of the phenolic hydroxyl group-containing compound raw material and the aldehyde compound (C). 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 of the triarylmethane type compound (A), the phenol compound (B) and the aldehyde compound (C) 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), the phenol compound (B) and the aldehyde compound (C) 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 monopenty
- the reaction of the triarylmethane type compound (A), the phenol compound (B), and the aldehyde compound (C) is performed at a temperature range of 60 to 140 ° C. for 0.5 to 20 hours, for example.
- a novolak resin intermediate (M) can be obtained by adding water to the reaction product and performing a reprecipitation operation.
- the weight average molecular weight (Mw) of the novolak resin intermediate (M) thus obtained is excellent in balance of developability, heat resistance and crack resistance, and a phenolic hydroxyl group-containing resin suitable for a resist material can be obtained. Is preferably in the range of 3,000 to 50,000.
- 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.
- alkene compound (D) having 8 to 24 carbon atoms has an ethylenic double bond site capable of reacting with the novolak resin intermediate (M)
- other molecular structures are not particularly limited, For example, the following structural formula (6)
- R 6 is an aliphatic hydrocarbon group having 6 to 22 carbon atoms.
- the compound represented by these is mentioned.
- the alkene compound (D) having 8 to 24 carbon atoms may be used alone or in combination of two or more.
- R 6 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 6 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 6 to 18 because it becomes a phenolic hydroxyl group-containing resin having particularly excellent crack resistance.
- the reaction ratio between the novolak resin intermediate (M) and the alkene compound (D) having 8 to 24 carbon atoms is a phenolic hydroxyl group-containing resin having an excellent balance of developability, heat resistance and crack resistance. Ratio of alkene compound (D) having 8 to 24 carbon atoms to 0.5 to 30% by mass with respect to the total mass of novolak resin intermediate (M) and alkene compound (D) having 8 to 24 carbon atoms It is preferable that
- the reaction between the novolak resin intermediate (M) and the alkene compound (D) having 8 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 (M) and the alkene compound (D) having 8 to 24 carbon atoms 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,
- the reaction between the novolak resin intermediate (M) and the alkene compound (D) having 8 to 24 carbon atoms is carried out, for example, at a temperature range of 60 to 140 ° C. 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 of developability, heat resistance and crack resistance, and is suitable for a resist material. 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 particularly useful as a resist material because it has a good balance of developability, heat resistance and crack resistance, but is soluble in general-purpose organic solvents. Since it is excellent and easy to handle, it can be used in a wide variety of applications such as various electric and electronic member applications such as paints, adhesives and printed wiring boards.
- the phenolic hydroxyl group-containing resin of the present invention is used for a resist material, its specific application is not particularly limited, and it can be suitably used for thick film applications, resist underlayer films, resist permanent film applications, and the like.
- 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 agent include compounds having a quinonediazide group.
- Specific examples of the compound having a quinonediazide group include, for example, an aromatic (poly) hydroxy compound and a sulfonic acid having a quinonediazide group such as 1,2-naphthoquinone-2-diazide-5-sulfonic acid or a halide thereof.
- Examples thereof include ester compounds, partial ester compounds, amidated products, and partially amidated products.
- aromatic (poly) hydroxy compound examples include 2,3,4-trihydroxybenzophenone, 2,4,4′-trihydroxybenzophenone, 2,4,6-trihydroxybenzophenone, 2,3,6-tri Hydroxybenzophenone, 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'-hexahydroxybenzophenone, etc.
- Polyhydroxy benzophenone compound examples include 2,3,4-trihydroxybenzophenone, 2,4,4′-trihydroxybenzophenone, 2,4,6-trihydroxybenzophenone, 2,3,
- 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 be used in combination with other resins (X).
- resins (X) 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.
- the various novolak resins include phenols, alkylphenols such as cresol and xylenol, bisphenols such as phenylphenol, resorcinol, biphenyl, bisphenol A and bisphenol F, and phenolic hydroxyl group-containing compounds such as naphthol and dihydroxynaphthalene. And a polymer obtained by reacting an aldehyde compound with an acid catalyst.
- 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 (X) can be arbitrarily set according to the use, but the effect of the present invention is more remarkable. Therefore, the proportion of the other resin (X) is preferably 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.
- the phenolic hydroxyl group of the present invention is used with respect to 100 parts by mass of the other resin (X).
- the resin content is preferably in the range of 3 to 80 parts by mass.
- 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.
- a surfactant for the purpose of improving the film forming property and pattern adhesion when used for resist applications.
- 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 polyoxyethylene sorbitan monolaurate, poly Non
- 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.
- a photosensitive resist material can be obtained by adding various additives such as a crosslinking agent and a dissolution accelerator and dissolving in an organic solvent.
- the resist material may be used as it is as a coating material, or a resist film obtained by applying a resist material on a support film and removing the solvent may be used as a resist film.
- 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.
- 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 Dialkylene glycol dialkyl ethers such as diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether; alkylene glycol alkyl ethers such as ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, propylene glycol monomethyl ether acetate Acetate; ketone compounds such as acetone, methyl ethyl ketone, cyclohexanone, methyl amyl ketone; cyclic ethers such as dioxane; methyl 2-hydroxypropionate, ethyl ethers
- the resist material of the present invention can be adjusted by blending the above components and mixing them using a stirrer or the like. Further, when the resist material 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.
- a resist material is applied on 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 formed by exposing the intended resist pattern through a predetermined mask and dissolving the exposed portion with an alkaline developer. Since the resist material 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.
- a curing agent as essential components.
- other resins (Y) may be used in combination.
- resins (Y) 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 (Y) can be arbitrarily set according to the use, but the effect of the present invention is more remarkable. Therefore, the ratio of the other resin (Y) 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 preferable.
- the curing agent used in the present invention is not particularly limited as long as it is a compound capable of causing a curing reaction with the phenolic hydroxyl group-containing resin of the present invention, and various compounds can be used.
- the curing method of the curable composition of the present invention is not particularly limited, and it can be cured by an appropriate method such as thermal curing or photocuring according to the type of curing agent or the type of curing accelerator described later. it can. Curing conditions such as the heating temperature and time in thermosetting, the type of light beam in photocuring and the exposure time are appropriately adjusted according to the type of curing agent, the type of curing accelerator described below, and the like.
- the curing agent include, for example, melamine compounds, guanamine compounds, glycoluril compounds, urea compounds, resol resins, epoxy compounds, isocyanate compounds, azide compounds, compounds containing double bonds such as alkenyl ether groups, acid anhydrides, and the like. Products, oxazoline compounds and the like.
- Examples of the melamine compound 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
- Examples include compounds in which 1 to 6 groups are acyloxymethylated.
- 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.
- a curable resist material can be obtained by adding various additives such as a crosslinking agent and a dissolution accelerator and dissolving in an organic solvent.
- 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 Dialkylene glycol dialkyl ethers such as diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether; alkylene glycol alkyl ethers such as ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, propylene glycol monomethyl ether acetate Acetate; ketone compounds such as acetone, methyl ethyl ketone, cyclohexanone, methyl amyl ketone; cyclic ethers such as dioxane; methyl 2-hydroxypropionate, ethyl ethers
- the resist material can be adjusted by blending the above components and mixing them using a stirrer or the like. Further, when the resist material 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 curable resist material can be suitably used particularly for resist underlayer film applications.
- the resist material is applied onto an object to be photolithography such as a silicon substrate, dried at a temperature of 100 to 200 ° C., and further 250 to A resist underlayer film is formed by a method such as heat curing under a temperature condition of 400 ° C.
- 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.
- 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
- the crude product was redissolved in acetone and further reprecipitated with water, and then the precipitate was separated by filtration and vacuum dried to obtain 213 g of a novolak resin intermediate (M-1) as a red powder.
- the number average molecular weight (Mn) of the novolak resin intermediate (M-1) was 1,937, the weight average molecular weight (Mw) was 12,822, and the polydispersity (Mw / Mn) was 6.62.
- Novolak Resin Intermediate (M-2) 249 g of triarylmethane type compound (A-1) and 31 g of m-cresol were charged into a 3000 ml four-necked flask equipped with a cooling tube, and then 2-ethoxyethanol. It was dissolved in 500 ml and acetic acid 500 ml. After adding 50 ml of sulfuric acid while cooling in an ice bath, 33 g of 92% paraformaldehyde was charged. It heated to 80 degreeC with the oil bath, and was made to react, stirring for 10 hours. After completion of the reaction, water was added to the resulting solution to reprecipitate the crude product.
- red powder novolak resin intermediate (M-2) The number average molecular weight (Mn) of the novolak resin intermediate (M-2) was 2,018, the weight average molecular weight (Mw) was 11,486, and the polydispersity (Mw / Mn) was 5.69.
- the crude product was redissolved in acetone and reprecipitated with water, and then the precipitate was separated by filtration and vacuum-dried to obtain 218 g of a red powder novolak resin intermediate (M-3).
- the number average molecular weight (Mn) of the novolak resin intermediate (M-3) was 1,538, the weight average molecular weight (Mw) was 6,508, and the polydispersity (Mw / Mn) was 4.23.
- Example 1 Production of phenolic hydroxyl group-containing resin (1) 30 g of novolak resin intermediate (M-1) and 3.0 g of 1-octene were charged into a 300 ml four-necked flask equipped with a cooling tube, and then 2-ethoxyethanol was added. Dissolved in 100 ml. After adding 10 ml of sulfuric acid while cooling in an ice bath, the mixture was heated to 80 ° C. in an oil bath and reacted with stirring for 6 hours. After completion of the reaction, water was added to the resulting solution to reprecipitate the crude product.
- Example 2 Production of Phenolic Hydroxyl Group Resin (2) The same operation as in Example 1 was conducted except that 3.0 g of 1-octene was changed to 1-octadecene 1.5, and a red powdery phenolic hydroxyl group containing resin ( 2) 27 g was obtained.
- the number average molecular weight (Mn) of the phenolic hydroxyl group-containing resin (2) was 1,860, the weight average molecular weight (Mw) was 13,740, and the polydispersity (Mw / Mn) was 7.39.
- a GPC chart of the phenolic hydroxyl group-containing resin (2) is shown in FIG.
- Example 3 Production of phenolic hydroxyl group-containing resin (3) 30 g of the novolak resin intermediate (M-1) was changed to 30 g of the novolak resin intermediate (M-2), and 3.0 g of 1-octene was changed to 1-dodecene. The same operation as in Example 1 was carried out except that the amount was changed to 0 g, to obtain 30 g of a red powdery phenolic hydroxyl group-containing resin (3).
- the number average molecular weight (Mn) of the phenolic hydroxyl group-containing resin (3) was 2,010, the weight average molecular weight (Mw) was 10,756, and the polydispersity (Mw / Mn) was 5.35.
- a GPC chart of the phenolic hydroxyl group-containing resin (3) is shown in FIG.
- Example 4 Production of phenolic hydroxyl group-containing resin (4) 30 g of the novolak resin intermediate (M-1) was changed to 30 g of the novolak resin intermediate (M-3), and 3.0 g of 1-octene was replaced with 1-dodecene. The same operation as in Example 1 was carried out except that the amount was changed to 5 g to obtain 28 g of a red powdery phenolic hydroxyl group-containing resin (4).
- the number average molecular weight (Mn) of the phenolic hydroxyl group-containing resin (4) was 1,572, the weight average molecular weight (Mw) was 6,784, and the polydispersity (Mw / Mn) was 4.32.
- a GPC chart of the phenolic hydroxyl group-containing resin (4) is shown in FIG.
- Example 5 Production of phenolic hydroxyl group-containing resin (5) 30 g of novolak resin intermediate (M-1) was changed to 30 g of novolak resin intermediate (M-3), and 3.0 g of 1-octene was produced by Idemitsu Kosan Co., Ltd. “Linearene 148” [35:37:28 (molar ratio) mixture of 1-tetradecene, 1-hexadecene, 1-octadecene] was changed to 1.5 g, and the same operation as in Example 1 was carried out. 29 g of functional hydroxyl group-containing resin (5) was obtained.
- the number average molecular weight (Mn) of the phenolic hydroxyl group-containing resin (5) was 1,586, the weight average molecular weight (Mw) was 6,829, and the polydispersity (Mw / Mn) was 4.31.
- a GPC chart of the phenolic hydroxyl group-containing resin (4) is shown in FIG.
- the crude product was redissolved in acetone and further reprecipitated with water, and then the precipitate was separated by filtration and vacuum dried to obtain 24.6 g of a phenolic hydroxyl group-containing resin (2 ′) as a yellow powder.
- the number average molecular weight (Mn) of the phenolic hydroxyl group-containing resin (2 ′) was 1,792, the weight average molecular weight (Mw) was 11,701, and the polydispersity (Mw / Mn) was 6.53.
- 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.
- an alkaline developer 2.38% tetramethylammonium hydroxide aqueous solution
- the exposure dose (Eop exposure dose) capable of faithfully reproducing the line width of 3 ⁇ m 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 onto a 5-inch silicon wafer with a spin coater and dried on a hot plate at 110 ° C. for 300 seconds. This coating operation was repeated to produce a wafer having a coating film thickness of 50 ⁇ m and a wafer having a coating film thickness of 100 ⁇ m. The surface of the wafer was observed using a laser microscope (“VK-X200” manufactured by Keyence Corporation), and the case where there was no crack was evaluated as ⁇ , and the case where there was a crack was evaluated as ⁇ .
- the photosensitive composition obtained above was applied on 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
- 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
- the curable composition obtained above was applied onto a 5-inch silicon wafer with a spin coater and dried on a hot plate at 110 ° C. for 300 seconds. This coating operation was repeated to produce a wafer having a coating film thickness of 50 ⁇ m and a wafer having a coating film thickness of 100 ⁇ m. The surface of the wafer was observed using a laser microscope (“VK-X200” manufactured by Keyence Corporation), and the case where there was no crack was evaluated as ⁇ , and the case where there was a crack was evaluated as ⁇ .
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Abstract
Description
で表される構造部位(α)と、下記構造式(3)
で表される構造部位(β)とを繰り返し単位として有し、樹脂中に存在するR2、R3、R5のうち少なくとも一つが炭素原子数8~24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。
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)、フェノール又は炭素原子数1~7の脂肪族炭化水素基を有するフェノール化合物(B)、及びアルデヒド化合物(C)を反応原料とするノボラック樹脂中間体(M)と、炭素原子数8~24のアルケン化合物(D)との反応物であるフェノール性水酸基含有樹脂に関する。
本発明のフェノール性水酸基含有樹脂は、下記構造式(1)又は(2)
で表される構造部位(α)と、下記構造式(3)
で表される構造部位(β)とを繰り返し単位として有し、樹脂中に存在するR2、R3、R5のうち少なくとも一つが炭素原子数8~24の脂肪族炭化水素基であることを特徴とする。
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)、フェノール又は炭素原子数1~7の脂肪族炭化水素基を有するフェノール化合物(B)、及びアルデヒド化合物(C)を反応原料とするノボラック樹脂中間体(M)と、炭素原子数8~24のアルケン化合物(D)とを反応させる方法により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-ヒドロキシベンズアルデヒド244g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。反応終了後、得られた溶液に水を加えて粗成生物を再沈殿させた。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)421gを得た。13C-NMRにて下記構造式で表される化合物の生成を確認した。GPCチャート図から算出される純度はGPC純度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。
冷却管を設置した3000mlの4口フラスコにトリアリールメタン型化合物(A-1)174g、m-クレゾール54g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を仕込んだ。オイルバスで80℃まで加熱し、10時間撹拌しながら反応させた。反応終了後、得られた溶液に水を加えて粗成生物を再沈殿させた。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、赤色粉末のノボラック樹脂中間体(M-1)213gを得た。ノボラック樹脂中間体(M-1)の数平均分子量(Mn)は1,937、重量平均分子量(Mw)は12,822、多分散度(Mw/Mn)は6.62であった。
冷却管を設置した3000mlの4口フラスコにトリアリールメタン型化合物(A-1)249g、m-クレゾール31g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を仕込んだ。オイルバスで80℃まで加熱し、10時間撹拌しながら反応させた。反応終了後、得られた溶液に水を加えて粗成生物を再沈殿させた。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、赤色粉末のノボラック樹脂中間体(M-2)266gを得た。ノボラック樹脂中間体(M-2)の数平均分子量(Mn)は2,018、重量平均分子量(Mw)は11,486、多分散度(Mw/Mn)は5.69であった。
冷却管を設置した3000mlの4口フラスコにトリアリールメタン型化合物(A-1)174g、m-クレゾール54g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30gを仕込んだ。オイルバスで80℃まで加熱し、8時間撹拌しながら反応させた。反応終了後、得られた溶液に水を加えて粗成生物を再沈殿させた。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、赤色粉末のノボラック樹脂中間体(M-3)218gを得た。ノボラック樹脂中間体(M-3)の数平均分子量(Mn)は1,538、重量平均分子量(Mw)は6,508、多分散度(Mw/Mn)は4.23であった。
冷却管を設置した300mlの4口フラスコにノボラック樹脂中間体(M-1)30g、1-オクテン3.0g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℃まで加熱し、6時間撹拌しながら反応させた。反応終了後、得られた溶液に水を加えて粗成生物を再沈殿させた。次いで、粗生成物をメタノールに溶解させた後、ヘキサンを加えて再沈殿させ、沈殿物を濾別して真空乾燥を行い、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)の数平均分子量(Mn)は1,827、重量平均分子量(Mw)は12,209、多分散度(Mw/Mn)は6.68であった。フェノール性水酸基含有樹脂(1)のGPCチャートを図3に示す。
1-オクテン3.0gを1-オクタデセン1.5に変更した以外は実施例1と同様の操作を行い、赤色粉末のフェノール性水酸基含有樹脂(2)27gを得た。フェノール性水酸基含有樹脂(2)の数平均分子量(Mn)は1,860、重量平均分子量(Mw)は13,740、多分散度(Mw/Mn)は7.39であった。フェノール性水酸基含有樹脂(2)のGPCチャートを図4に示す。
ノボラック樹脂中間体(M-1)30gをノボラック樹脂中間体(M-2)30gに変更し、1-オクテン3.0gを1-ドデセン3.0gに変更した以外は実施例1と同様の操作を行い、赤色粉末のフェノール性水酸基含有樹脂(3)30gを得た。フェノール性水酸基含有樹脂(3))の数平均分子量(Mn)は2,010、重量平均分子量(Mw)は10,756、多分散度(Mw/Mn)は5.35であった。フェノール性水酸基含有樹脂(3)のGPCチャートを図5に示す。
ノボラック樹脂中間体(M-1)30gをノボラック樹脂中間体(M-3)30gに変更し、1-オクテン3.0gを1-ドデセン1.5gに変更した以外は実施例1と同様の操作を行い、赤色粉末のフェノール性水酸基含有樹脂(4)28gを得た。フェノール性水酸基含有樹脂(4)の数平均分子量(Mn)は1,572、重量平均分子量(Mw)は6,784、多分散度(Mw/Mn)は4.32であった。フェノール性水酸基含有樹脂(4)のGPCチャートを図6に示す。
ノボラック樹脂中間体(M-1)30gをノボラック樹脂中間体(M-3)30gに変更し、1-オクテン3.0gを出光興産株式会社製「リニアレン148」[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]1.5gに変更した以外は実施例1と同様の操作を行い、赤色粉末の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)の数平均分子量(Mn)は1,586、重量平均分子量(Mw)は6,829、多分散度(Mw/Mn)は4.31であった。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。
攪拌機、温度計を備えた2Lの4つ口フラスコに、m-クレゾール648g、p-クレゾール432g、シュウ酸2.5g、42%ホルムアルデヒド492gを仕込み、100℃まで加熱して反応させた。常圧で200℃まで加熱して脱水及び蒸留し、更に230℃で6時間減圧蒸留を行い、淡黄色固形のフェノール性水酸基含有樹脂(1’)736g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1,450、重量平均分子量(Mw)は10,316、多分散度(Mw/Mn)は7.12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、パラクレゾール8.6g、3-ペンタデシルフェノール6.1g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を仕込んだ。オイルバスで80℃まで加熱し、10時間撹拌しながら反応させた。反応終了後、得られた溶液に水を加えて粗成生物を再沈殿させた。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、黄色粉末のフェノール性水酸基含有樹脂(2’)24.6gを得た。フェノール性水酸基含有樹脂(2’)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1~5、比較製造例1、2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のメンブラ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のメンブラ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10mJ/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。この塗工操作を繰り返し、塗膜の厚さが50μmのウェハーと、塗膜の厚さが100μのウェハーとを作製した。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1~5、比較製造例1、2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のメンブランフィルターで濾過し、硬化性組成物を得た。
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。この塗工操作を繰り返し、塗膜の厚さが50μmのウェハーと、塗膜の厚さが100μのウェハーとを作製した。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 (9)
- 下記構造式(1)又は(2)
で表される構造部位(α)と、下記構造式(3)
で表される構造部位(β)とを繰り返し単位として有し、樹脂中に存在するR2、R3、R5のうち少なくとも一つが炭素原子数8~24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。 - 前記構造部位(α)と、前記構造部位(β)との存在比率[(α)/(β)]が90/10~30/70の範囲である請求項1記載のフェノール性水酸基含有樹脂。
- 前記ノボラック樹脂中間体(M)と前記炭素原子数8~24のアルケン化合物(D)との反応割合が、両者の合計質量に対し前記炭素原子数8~24のアルケン化合物(D)が0.5~30質量%となる割合である請求項3記載のフェノール性水酸基含有樹脂。
- 請求項1~4の何れか一つ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5記載の感光性組成物を用いたレジスト材料。
- 請求項1~4の何れか一つ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7記載の硬化性組成物の硬化物。
- 請求項7記載の硬化性組成物を用いたレジスト材料。
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WO2023112837A1 (ja) * | 2021-12-17 | 2023-06-22 | Dic株式会社 | ノボラック型フェノール樹脂の探索方法、情報処理装置、及び非一時的なコンピュータ読取可能記録媒体 |
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