WO2021149705A1 - アルカリガラス用剥離層形成用組成物及び剥離層 - Google Patents
アルカリガラス用剥離層形成用組成物及び剥離層 Download PDFInfo
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- WO2021149705A1 WO2021149705A1 PCT/JP2021/001803 JP2021001803W WO2021149705A1 WO 2021149705 A1 WO2021149705 A1 WO 2021149705A1 JP 2021001803 W JP2021001803 W JP 2021001803W WO 2021149705 A1 WO2021149705 A1 WO 2021149705A1
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- 0 CC(C(F)(F)F)OC(C1(CC(C)(C)C)C(C)(C)*1)=O Chemical compound CC(C(F)(F)F)OC(C1(CC(C)(C)C)C(C)(C)*1)=O 0.000 description 3
Classifications
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/02—Polyureas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/26—Layered products comprising a layer of synthetic resin characterised by the use of special additives using curing agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
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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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/22—Di-epoxy compounds
- C08G59/26—Di-epoxy compounds heterocyclic
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
Definitions
- the present invention relates to a composition for forming a release layer for alkaline glass and a release layer.
- an active matrix type full-color TFT display panel using a lightweight flexible plastic substrate (hereinafter, also referred to as a resin substrate) is required.
- a lightweight flexible plastic substrate hereinafter, also referred to as a resin substrate
- materials corresponding to flexibility such as transparent electrodes of touch panels and resin substrates used in combination with display panels have been developed.
- the transparent electrode another transparent electrode material such as a transparent conductive polymer capable of bending such as PEDOT, a metal nanowire, and a mixed system thereof has been proposed from the conventionally used ITO (Patent Documents 1 to 4). ).
- Examples of the technique for manufacturing the flexible touch sensor wiring include a wiring technique by flexographic printing using metal nanowires and a high boiling point solvent (Patent Document 5), which is much more than the conventional ITO. While it is easy to bend, it uses a high boiling point solvent, which requires an unprecedented high temperature process.
- the base material of the touch panel film a sheet made of plastic such as polyethylene terephthalate (PET), polyimide, cycloolefin, and acrylic is used from glass, and a transparent flexible touch screen panel having flexibility has been developed. Therefore, a base material capable of withstanding a high temperature process is required (Patent Documents 6 to 8).
- a peel (adhesive) layer is formed on a support substrate such as a glass substrate, and a device is formed on the peeling (adhesive) layer and then peeled.
- Patent Document 9 a peel (adhesive) layer is formed on a support substrate such as a glass substrate, and a device is formed on the peeling (adhesive) layer and then peeled.
- the present invention has been made in view of the above circumstances, and provides a release layer having high heat resistance and appropriate release property, and having excellent release stability even when an inexpensive alkaline glass substrate is used. It is an object of the present invention to provide a composition for forming a release layer to be obtained.
- the present inventors have (A) a polyurea containing a predetermined repeating unit, (B) an acid compound or a salt thereof, (C) a hydroxyalkyl group and / or an alkoxy.
- a cross-linking agent selected from a compound having a nitrogen atom substituted with a methyl group, (D) a polymer additive containing a predetermined repeating unit, and (E) a composition for forming a release layer containing a solvent have high heat resistance.
- the present invention has been completed by finding that a release layer having excellent adhesion to a substrate, appropriate adhesion to a resin substrate, and appropriate peelability can be provided with good reproducibility.
- the present invention provides the following composition for forming a release layer for alkaline glass and a release layer.
- 1. When a film containing the following components (A) to (E) and fired at 300 ° C. or lower after being applied on an alkaline glass substrate is brought into contact with an organic film, it has a peeling force of 0.2 N / 25 mm or less.
- A Polyurea containing a repeating unit represented by the following formula (1).
- B Sulfonic acid compound or salt thereof
- C A cross-linking agent selected from compounds having a nitrogen atom substituted with a hydroxyalkyl group and / or an alkoxymethyl group.
- X 1 is a group represented by the following formulas (1-1), (1-2), (1-3) or (1-4).
- R 1 and R 2 are independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 3 to 6 carbon atoms, a benzyl group or a phenyl group, and the phenyl group is carbon. Substituted with at least one group selected from the group consisting of an alkyl group having 1 to 6 atoms, a halogen atom, an alkoxy group having 1 to 6 carbon atoms, a nitro group, a cyano group, a hydroxy group and an alkylthio group having 1 to 6 carbon atoms.
- R 1 and R 2 may be bonded to each other to form a ring having 3 to 6 carbon atoms together with the carbon atom to which they are bonded, and R 3 has 1 to 6 carbon atoms. It is an alkyl group, an alkenyl group having 3 to 6 carbon atoms, a benzyl group or a phenyl group, and the phenyl group is an alkyl group having 1 to 6 carbon atoms, a halogen atom, an alkoxy group having 1 to 6 carbon atoms, a nitro group or a cyano group.
- Q 1 is a group represented by the following formula (1-5) or (1-6).
- X 2 is a group represented by the formula (1-1), the formula (1-2) or the formula (1-4), and Q 2 is an alkylene group having 1 to 10 carbon atoms, phenylene.
- the group is a naphthylene group or an anthrylene group
- the phenylene group, the naphthylene group and the anthrylene group are an alkyl group having 1 to 6 carbon atoms, a halogen atom, an alkoxy group having 1 to 6 carbon atoms, a nitro group, a cyano group and a hydroxy group.
- RA is independently a hydrogen atom or a methyl group
- RB1 is a branched alkyl group having 3 or 4 carbon atoms in which at least one hydrogen atom is substituted with a fluorine atom
- RC is a hydroxyalkyl group having 2 to 10 carbon atoms or a polycyclic alkyl group having 1 to 4 hydroxy groups and 6 to 20 carbon atoms
- R D is a polycyclic alkyl group having 6 to 20 carbon atoms.
- the formula is an alkyl group or an aryl group having 6 to 12 carbon atoms.
- RC has a hydroxyalkyl group having 2 to 10 carbon atoms or 6 to 20 carbon atoms having 1 to 4 hydroxy groups.
- the polycyclic alkyl group, the carbon atom to which the hydroxy group is bonded is a secondary or tertiary carbon atom, and the content ratio of the repeating unit represented by the formula (a1) is high (D).
- the composition for forming a release layer for alkaline glass (1) which is 20 mol% or more and 80 mol% or less in all the repeating units of the molecular additive. 3.
- R 11 to R 38 are each independently a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and R 39 is a hydrogen atom or a methyl group.
- Manufacture of a resin substrate including a step of forming a resin substrate having a light transmittance of 80% or more at a wavelength of 400 nm on the peeling layer and a step of peeling the resin substrate with a peeling force of 0.2 N / 25 mm or less.
- the composition for forming a release layer of the present invention By using the composition for forming a release layer of the present invention, it is possible to obtain a release layer having high heat resistance, excellent adhesion to a substrate, appropriate adhesion to a resin substrate, and appropriate peelability with good reproducibility. can. Further, in the manufacturing process of a flexible electronic device, it is possible to separate the resin substrate from the substrate together with the circuit, etc. without damaging the resin substrate formed on the substrate, the circuit provided on the resin substrate, or the like. can. Therefore, the composition for forming a release layer of the present invention can contribute to speeding up the manufacturing process of a flexible electronic device including a resin substrate and improving the yield thereof.
- composition for forming a release layer of the present invention comprises (A) a polyurea containing a predetermined repeating unit, (B) an acid compound or a salt thereof, and (C) a nitrogen atom substituted with a hydroxyalkyl group and / or an alkoxymethyl group. It contains a cross-linking agent selected from the compounds having the compound, (D) a polymer additive containing a predetermined repeating unit, and (E) a solvent.
- the polyurea component (A) contains a repeating unit represented by the following formula (1).
- a 1 , A 2 , A 3 , A 4 , A 5 and A 6 are each independently a hydrogen atom, a methyl group or an ethyl group, but from the viewpoint of peelability and productivity, It is preferable that A 1 to A 6 are all hydrogen atoms.
- X 1 is a group represented by the following formulas (1-1), (1-2), (1-3) or (1-4).
- R 1 and R 2 are independently hydrogen atoms, alkyl groups having 1 to 6 carbon atoms, alkoxy groups having 3 to 6 carbon atoms, benzyl groups or phenyls, respectively.
- the phenyl group is a group consisting of an alkyl group having 1 to 6 carbon atoms, a halogen atom, an alkoxy group having 1 to 6 carbon atoms, a nitro group, a cyano group, a hydroxy group and an alkylthio group having 1 to 6 carbon atoms. It may be substituted with at least one group selected from, and R 1 and R 2 may be bonded to each other to form a ring having 3 to 6 carbon atoms together with the carbon atom to which they are bonded.
- R 3 is an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 3 to 6 carbon atoms, a benzyl group or a phenyl group, and the phenyl group is an alkyl group having 1 to 6 carbon atoms. It may be substituted with at least one group selected from the group consisting of a group, a halogen atom, an alkoxy group having 1 to 6 carbon atoms, a nitro group, a cyano group, a hydroxy group and an alkylthio group having 1 to 6 carbon atoms. )
- Q 1 is a group represented by the following formula (1-5) or (1-6).
- X 2 is a group represented by formula (1-1), formula (1-2) or formula (1-4).
- formula (1-5 for example, when X 2 is a group represented by formula (1-2), its structure is formula (1-5-1).
- Q 2 is an alkylene group having 1 to 10 carbon atoms, a phenylene group, a naphthylene group or an anthrylene group.
- the phenylene group, naphthylene group and anthrylene group are an alkyl group having 1 to 6 carbon atoms, a halogen atom, an alkoxy group having 1 to 6 carbon atoms, a nitro group, a cyano group, a hydroxy group and an alkylthio group having 1 to 6 carbon atoms. It may be substituted with at least one group selected from the group consisting of.
- the position of their bond is not particularly limited. That is, for example, when the phenylene group is bonded at the 1-position and the 2-position, when it is bonded at the 1-position and the 3-position, or when it is bonded at the 1-position and the 4-position, the naphthalene group is 1 When bonded at the 2-position, bonded at the 1-position and 4-position, bonded at the 1-position and 5-position, or bonded at the 2-position and 3-position, the anthrylene group is bonded. It may be bonded at the 1st and 2nd positions, bonded at the 1st and 4th positions, or bonded at the 9th and 10th positions, but it may be any of these.
- the alkyl group having 1 to 6 carbon atoms may be linear, branched or cyclic, and examples thereof include a methyl group, an ethyl group, an isopropyl group, an n-butyl group and a cyclohexyl group.
- the alkenyl group having 3 to 6 carbon atoms may be linear, branched or cyclic, and examples thereof include a 2-propenyl group and a 3-butenyl group.
- the alkoxy group having 1 to 6 carbon atoms may be linear, branched or cyclic, and examples thereof include a methoxy group, an ethoxy group, an isopropoxy group, an n-pentyloxy group and a cyclohexyloxy group. ..
- the alkylthio group having 1 to 6 carbon atoms may be linear, branched or cyclic, and examples thereof include a methylthio group, an ethylthio group, an isopropylthio group, an n-pentylthio group and a cyclohexylthio group.
- halogen atom examples include a fluorine atom, a chlorine atom, a bromine atom and an iodine atom.
- ring having 3 to 6 carbon atoms formed by combining R 1 and R 2 include a cyclobutane ring, a cyclopentane ring, and a cyclohexane ring.
- the alkylene group having 1 to 10 carbon atoms may be linear, branched or cyclic, and may be, for example, a methylene group, an ethylene group, a propylene group, a pentamethylene group, a cyclohexylene group, a 2-methylpropylene group or the like. Can be mentioned.
- Q 1 preferably contains a cyclic structure from the viewpoint of heat resistance of the polyurea component (A). That is, Q 1 is a group represented by the formula (1-5) or a group represented by the formula (1-6), and Q 2 is a cyclic alkylene group, a phenylene group, a naphthylene group or an anthrylene group. It is preferable, and it is more preferable that the group is represented by the formula (1-5).
- the polyurea component (A) can be synthesized with reference to, for example, International Publication No. 2005/098542.
- the weight average molecular weight (Mw) of (A) polyurea is preferably 1,000 to 200,000, more preferably 3,000 to 100,000, even more preferably 4,000 to 30,000, and 5,000 to 5,000. 20,000 is even more preferred.
- the dispersity (Mw / Mn) is preferably 1.3 to 4.0, more preferably 1.4 to 2.5.
- Mn is a number average molecular weight, and Mw and Mn are polystyrene-equivalent measured values by gel permeation chromatography (GPC).
- the composition for forming a release layer of the present invention contains an acid compound or a salt thereof as the component (B).
- the acid compound include sulfonic acids such as p-toluenesulfonic acid, trifluoromethanesulfonic acid, camphorsulfonic acid, sulfosalicylic acid, 4-chlorobenzenesulfonic acid, 4-hydroxybenzenesulfonic acid, benzenedisulfonic acid and 1-naphthalenesulfonic acid.
- Examples include compounds.
- the salt of the acid compound include pyridinium salt, isopropanolamine salt, N-methylmorpholin salt and the like of the acid.
- pyridinium p-toluenesulfonate pyridinium 1-naphthalenesulfonate, isopropanol and the like.
- examples thereof include amine p-toluene sulfonate and N-methylmorpholin p-toluene sulfonate.
- the content of the component (B) is preferably 1 to 30 parts by mass, more preferably 10 to 20 parts by mass with respect to 100 parts by mass of the polyurea of the component (A).
- the acid compound (B) or a salt thereof may be used alone or in combination of two or more.
- the composition for forming a release layer of the present invention contains a cross-linking agent as the component (C).
- the cross-linking agent is selected from compounds having a nitrogen atom substituted with a hydroxyalkyl group and / or an alkoxymethyl group.
- cross-linking agent a compound represented by any of the following formulas (C-1) to (C-5) is preferable.
- R 11 to R 38 are independently hydrogen atoms or alkyl groups having 1 to 6 carbon atoms, but alkyl groups having 1 to 6 carbon atoms are preferable.
- R 39 is a hydrogen atom or a methyl group.
- cross-linking agent hexamethylol melamine, tetramethylol benzoguanamine, 1,3,4,6-tetramethylol glycol uryl, hexamethoxymethyl melamine, tetramethoxymethylbenzoguanamine, 1,3,4,6-tetrakis
- nitrogen-containing compounds such as methoxymethyl) glycol uryl, 1,3,4,6-tetrax (butoxymethyl) glycol uryl, and 1,3,4,6-tetrax (hydroxymethyl) glycol uryl.
- Ornex's methoxymethyl type melamine compound (trade name: Cymel (registered trademark) 300, Cymel 301, Cymel 303, Cymel 350), butoxymethyl type melamine compound (trade name: Mycoat (registered trademark) 506, Mycoat 508) , Glycoluryl compound (trade name: Cymel 1170, POWDERLINK 1174), methylated urea resin (trade name: UFR65), butylated urea resin (trade name: UFR300, U-VAN10S60, U-VAN10R, U-VAN11HV), DIC Co., Ltd.
- Examples thereof include commercially available nitrogen-containing compounds such as urea / formaldehyde-based resins (trade names: Beccamin (registered trademark) J-300S, Beccamin P-955, Beccamin N).
- a hydroxymethyl group or an alkoxymethyl group such as N-hydroxymethyl (meth) acrylamide, N-methoxymethyl (meth) acrylamide, N-ethoxymethyl (meth) acrylamide, N-butoxymethyl (meth) acrylamide and the like.
- Polymers made using (meth) acrylamide compounds substituted with are available. Such polymers include, for example, poly (N-butoxymethyl (meth) acrylamide), N-butoxymethyl (meth) acrylamide and styrene copolymers, N-hydroxymethyl (meth) acrylamide and methyl (meth).
- the cross-linking agent is hexamethoxymethylmelamine, tetramethoxymethylbenzoguanamine, 1,3,4,6-tetrakis (methoxymethyl) glycoluril (POWDERLINK 1174), 1,3,4,6-tetrakis (butoxymethyl). ) Glycol uryl, 1,3,4,6-tetrakis (hydroxymethyl) glycol uryl.
- cross-linking agents can cause a cross-linking reaction by self-condensation.
- a cross-linking reaction can occur with the hydroxy group in the polyurea of the component (A). Then, by such a cross-linking reaction, the formed release layer becomes strong and becomes a release layer having low solubility in an organic solvent.
- the content of the component (C) is preferably 10 to 100 parts by mass, more preferably 20 to 50 parts by mass with respect to 100 parts by mass of the polyurea of the component (A).
- the content of the component (C) is within the above range, a composition having high heat resistance and appropriate peelability and capable of providing a peeling layer having excellent stability after film formation can be obtained.
- the cross-linking agent may be used alone or in combination of two or more.
- composition for forming a release layer of the present invention has a repeating unit represented by the following formula (a1), a repeating unit represented by the following formula (b), and a repeating unit represented by the following formula (c) as a component (D).
- a1 a repeating unit represented by the following formula (a1)
- b a repeating unit represented by the following formula (b)
- c a repeating unit represented by the following formula (c) as a component (D).
- RA is independently a hydrogen atom or a methyl group.
- R B1 is a branched alkyl group having 3 or 4 carbon atoms in which at least one hydrogen atom is replaced with a fluorine atom.
- RC is a hydroxyalkyl group having 2 to 10 carbon atoms or a polycyclic alkyl group having 1 to 4 hydroxy groups and 6 to 20 carbon atoms.
- RD is a polycyclic alkyl group having 6 to 20 carbon atoms or an aryl group having 6 to 12 carbon atoms.
- Examples of the branched alkyl group having 3 or 4 carbon atoms include an isopropyl group, an isobutyl group, a sec-butyl group and a tert-butyl group.
- R B1 at least one hydrogen atom of these branched alkyl groups is preferably substituted with a fluorine atom, and specific examples thereof include 1,1,1-trifluoroisopropyl group, 1,1,1. Examples thereof include 3,3,3-hexafluoroisopropyl group and nonafluorotert-butyl group.
- hydroxyalkyl group having 1 to 10 carbon atoms examples include a hydroxymethyl group, a 2-hydroxyethyl group, a 3-hydroxypropyl group, a 4-hydroxybutyl group, a 5-hydroxypentyl group, a 6-hydroxyhexyl group, and a 7-hydroxy group.
- Class carbon atoms 1-hydroxyethyl group, 1-hydroxypropyl group, 2-hydroxypropyl group, 1-hydroxybutyl group, 2-hydroxybutyl group, 1-hydroxyhexyl group, 2-hydroxyhexyl group, 1 -Hydroxyoctyl group, 2-hydroxyoctyl group, 1-hydroxydecyl group, 2-hydroxydecyl group, 1-hydroxy-1-methylethyl group, 2-hydroxy-2-methylpropyl group, etc. having 1 to 10 carbon atoms.
- Examples thereof include hydroxyalkyl groups in which the carbon atom to which the hydroxy group is bonded is a secondary or tertiary carbon atom.
- Examples of the repeating unit represented by a polycyclic alkyl group having 1 to 4 hydroxy groups and 6 to 20 carbon atoms include those represented by the following formulas (b-1) to (b-27). However, it is not limited to these. In the following formula, RA is the same as described above.
- Examples of the polycyclic alkyl group having 6 to 20 carbon atoms include a 1-adamantyl group, a 2-adamantyl group, an isobornyl group, a norbornyl group and the like.
- Examples of the aryl group having 6 to 12 carbon atoms include a phenyl group, a 1-naphthyl group, a 2-naphthyl group, a 1-biphenylyl group, a 2-biphenylyl group and the like.
- the polymer additive (D) is a repeating unit represented by the following formula (a2), a repeating unit represented by the following formula (b), a repeating unit represented by the following formula (c), and the following formula ( It may include a repeating unit represented by d).
- R B2 is at least one branched alkyl group of which a hydrogen atom is 3 or 4 carbon atoms substituted with a fluorine atom (provided that 2-methyl-1,1,1,3,3,3-hexafluoro Excluding isopropyl group.).
- Examples of the branched alkyl group having 3 or 4 carbon atoms include those similar to those described above.
- RE is a single bond, a polycyclic alkylene group having 6 to 20 carbon atoms, or an arylene group having 6 to 12 carbon atoms.
- RF is a single bond or an alkylene group having 1 to 10 carbon atoms.
- RG is a methyl group, an ethyl group or a hydroxy group.
- Examples of the polycyclic alkylene group having 6 to 20 carbon atoms include a group obtained by removing one hydrogen atom from the specific example of the above-mentioned polycyclic alkyl group having 6 to 20 carbon atoms, and examples thereof include an adamantylene group. Examples thereof include an isobornylene group and a norbornylene group.
- Examples of the arylene group having 6 to 12 carbon atoms include a group obtained by removing two hydrogen atoms from the above-mentioned specific example of the aryl group having 6 to 12 carbon atoms, and examples thereof include a phenylene group, a naphthylene group, and a biphenylylene group. Can be mentioned.
- alkylene group having 1 to 10 carbon atoms may be mentioned the same ones as exemplified in the description of the Q 2.
- an alkylene group having 1 to 5 carbon atoms is preferable, a methylene group and an ethylene group are more preferable, and a methylene group is even more preferable.
- Examples of the repeating unit represented by the formula (a1) or (a2) include, but are not limited to, those represented by the following formulas (a-1) to (a-3).
- RA is the same as described above.
- repeating unit represented by the formula (b) examples include, but are not limited to, those represented by the following formulas (b-1) to (b-16).
- RA is the same as described above.
- Examples of the repeating unit represented by the formula (c) include, but are not limited to, those represented by the following formulas (c-1) to (c-13).
- RA is the same as described above.
- Examples of the repeating unit represented by the formula (d) include, but are not limited to, those represented by the following formulas (d-1) to (d-8).
- RA is the same as described above.
- the polymer additive contains a repeating unit represented by the formula (a1), a repeating unit represented by the formula (b) and a repeating unit represented by the formula (c), and the formula (D)
- a repeating unit represented by the formula (a1) When the carbon atom to which the hydroxy group is bonded in the hydroxyalkyl group in the repeating unit represented by b) is a secondary or tertiary carbon atom (hereinafter, such a polymer additive is referred to as a polymer additive D1.
- the content of the repeating unit represented by the formula (a1) is preferably 30 to 60 mol%, more preferably 35 to 50 mol%, of all the repeating units.
- the content of the repeating unit represented by the formula (b) is preferably 10 to 35 mol%, more preferably 15 to 30 mol%, of all the repeating units.
- the content of the repeating unit represented by the formula (c) is preferably 5 to 60 mol%, more preferably 20 to 50 mol%, of all the repeating units.
- the polymer additive contains a repeating unit represented by the formula (a1), a repeating unit represented by the formula (b) and a repeating unit represented by the formula (c), and the formula (D)
- a polymer additive D2 When the carbon atom to which the hydroxy group is bonded in the hydroxyalkyl group in the repeating unit represented by b) is a primary carbon atom (hereinafter, such a polymer additive is referred to as a polymer additive D2).
- the content of the repeating unit represented by the formula (a1) is preferably 15 to 60 mol%, more preferably 25 to 60 mol%, even more preferably 30 to 60 mol%, and 35 to 50 in all the repeating units. Mol% is more preferred.
- the content of the repeating unit represented by the formula (b) is preferably 8 to 38 mol%, more preferably 10 to 38 mol%, more preferably 10 to 35 mol%, and 15 to 30 mol% of all the repeating units. Is even more preferable.
- the content of the repeating unit represented by the formula (c) is preferably 2 to 77 mol%, more preferably 2 to 65 mol%, further preferably 5 to 60 mol%, and 20 to 50 in all the repeating units. More preferably mol%.
- the polymer additive is represented by a repeating unit represented by the formula (a2), a repeating unit represented by the formula (b), a repeating unit represented by the formula (c), and a repeating unit represented by the formula (d).
- a repeating unit represented by the formula (a2) is 2 to 45 mol in all the repeating units.
- % Is preferred is preferred, and 5 to 35 mol% is more preferred.
- the content of the repeating unit represented by the formula (b) is preferably 20 to 35 mol%, more preferably 25 to 35 mol%, of all the repeating units.
- the content of the repeating unit represented by the formula (c) is preferably 30 to 45 mol%, more preferably 35 to 45 mol%, of all the repeating units.
- the content of the repeating unit represented by the formula (d) is preferably 5 to 18 mol%, more preferably 5 to 15 mol%, of all the repeating units.
- the Mw of the polymer additive (D) is preferably 2,000 to 10,000, more preferably 3,000 to 6,000.
- the Mw / Mn thereof is preferably 1.0 to 2.1, more preferably 1.0 to 1.9.
- the content of the polymer additive of the component (D) is 3 to 100 parts by mass with respect to 100 parts by mass of the polyurea of the component (A), more preferably 3 to 80 parts by mass, and 3 to 50 parts by mass. Even more preferable. If the content of the polymer additive is less than 3 parts by mass, the peeling force may increase, and if it exceeds 100 parts by mass, it may repel during film formation.
- the content thereof is preferably 10 to 100 parts by mass and 20 to 100 parts by mass with respect to 100 parts by mass of the polyurea of the component (A). Parts are more preferable, and 30 to 100 parts by mass are even more preferable.
- the content thereof is preferably 5 to 80 parts by mass with respect to 100 parts by mass of the polyurea component (A). More preferably, 5 to 50 parts by mass.
- the polymer additive may be used alone or in combination of two or more.
- the composition for forming a release layer of the present invention contains a solvent as the component (E).
- the solvent include a glycol ether solvent having 3 to 20 carbon atoms, an ester solvent having 3 to 20 carbon atoms, a ketone solvent having 3 to 20 carbon atoms, an amide solvent having an ether bond, and 3 to 20 carbon atoms. Cyclic compound solvent is preferable.
- glycol ether solvent examples include propylene glycol monomethyl ether (PGME), propylene glycol monomethyl ether acetate (PGMEA), propylene glycol monoethyl ether, and propylene glycol monopropyl ether.
- amide-based solvent having an ether bond examples include 3-methoxy N, N dimethylpropanamide, 3-butoxy N, N dimethylpropaneamide and the like.
- ester solvent examples include ethyl lactate, ⁇ -butyrolactone, methyl 2-hydroshikiisobutyrate, ethyl 2-hydroshikiisobutyrate and the like.
- the ketone solvent examples include methyl ethyl ketone, cyclohexanone, cyclopentanone, benzophenone and the like.
- the cyclic compound solvent examples include ⁇ -butyrolactone and the like.
- the content of the solvent (E) is preferably such that the solid content concentration in the composition for forming a release layer of the present invention is 0.1 to 40% by mass, more preferably 0.5 to 20% by mass. It is preferable, and an amount of 0.5 to 10% by mass is even more preferable.
- the solid content is a general term for all the components of the composition for forming a release layer other than the solvent.
- the solvent (E) may be used alone or in combination of two or more.
- the composition for forming a release layer of the present invention may contain a surfactant, if necessary.
- a surfactant By adding a surfactant, the applicability of the release layer forming composition to the substrate can be improved.
- known surfactants such as nonionic surfactants, fluorine-based surfactants, and silicone-based surfactants can be used.
- nonionic surfactant examples include polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyoxyethylene cetyl ether, and polyoxyethylene oleyl ether; polyoxyethylene octyl.
- Polyoxyethylene alkylaryl ethers such as phenyl ethers and polyoxyethylene nonylphenyl ethers; polyoxyethylene / polyoxypropylene block copolymers; sorbitan monolaurates, sorbitan monopalmitates, sorbitan monostearates, sorbitan monooleates, Solbitan fatty acid esters such as sorbitan trioleate and sorbitan tristearate; polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan trioleate, polyoxyethylene sorbitan. Examples thereof include polyoxyethylene sorbitan fatty acid esters such as tristearate.
- fluorine-based surfactants examples include Ftop (registered trademark) EF301, EF303, EF352 (manufactured by Mitsubishi Materials Electronics Chemical Co., Ltd.), Megafuck (registered trademark) F171, F173, F554, F559, F563, R- 30, R-30N, R-40, R-40-LM, DS-21 (manufactured by DIC Co., Ltd.), FLUORAD (registered trademark) FC430, FC431 (manufactured by 3M Ltd.), Asahi Guard (registered trademark) AG710, Surfron (Registered trademark) S-382, SC101, SC102, SC103, SC104, SC105, SC106 (manufactured by Asahi Glass Co., Ltd.) and the like can be mentioned.
- Ftop registered trademark
- EF303 EF352
- Megafuck registered trademark
- silicone-based surfactant examples include organosiloxane polymer KP341 (manufactured by Shin-Etsu Chemical Co., Ltd.).
- composition for forming a release layer contains a surfactant
- the content thereof is preferably 0.0001 to 1 part by mass and 0.001 to 0.5 part by mass with respect to 100 parts by mass of (A) polyurea. More preferred.
- the surfactant may be used alone or in combination of two or more.
- composition for forming a release layer The method for preparing the composition for forming a release layer of the present invention is not particularly limited.
- a preparation method for example, the component (B), the component (C), the component (D), the component (E) and the like are mixed in a solution of the component (A) dissolved in a solvent at a predetermined ratio to obtain a uniform solution. And a method of further adding and mixing other additives as needed at an appropriate stage of the above-mentioned preparation method.
- a solution of a specific copolymer (polymer) obtained by a polymerization reaction in a solvent can be used as it is.
- the component (B), the component (C), the component (D), the component (E) and the like are added to the solution of the component (A) in the same manner as described above to obtain a uniform solution.
- an additional solvent may be added for the purpose of adjusting the concentration.
- the solvent used in the process of producing the component (A) and the solvent used for adjusting the concentration of the composition for forming the release layer may be the same or different.
- the prepared solution of the composition for forming a release layer is used after being filtered using a filter or the like having a pore size of about 0.2 ⁇ m.
- the viscosity of the composition for forming a release layer of the present invention is appropriately set in consideration of the thickness of the release layer to be produced, etc., but in particular, a film having a thickness of about 0.01 to 5 ⁇ m can be obtained with good reproducibility. Usually, it is about 1 to 5,000 mPa ⁇ s, preferably about 1 to 2,000 mPa ⁇ s at 25 ° C.
- the viscosity can be measured using a commercially available viscometer for measuring the viscosity of a liquid, for example, with reference to the procedure described in JIS K7117-2, under the condition that the temperature of the composition is 25 ° C. ..
- a conical plate type (cone plate type) rotational viscometer is used as the viscometer, and 1 ° 34'x R24 is preferably used as the standard cone rotor with the same type viscometer, and the temperature of the composition is 25. It can be measured under the condition of ° C.
- Examples of such a rotational viscometer include TVE-25L manufactured by Toki Sangyo Co., Ltd.
- the heating time cannot be unconditionally specified because it depends on the heating temperature, but it is usually 1 minute to 5 hours.
- the firing temperature may include a step of firing at a temperature lower than that as long as the maximum temperature is within the above range.
- a preferred example of the heating mode in the present invention is a mode in which heating is performed at 50 to 150 ° C. for 1 minute to 1 hour, and then the heating temperature is raised as it is to heat at 180 to 250 ° C. for 5 minutes to 4 hours.
- the heating mode there is an aspect of heating at 50 to 150 ° C. for 1 minute to 1 hour and heating at 200 to 250 ° C. for 5 minutes to 2 hours.
- the release layer of the present invention When the release layer of the present invention is formed on the substrate, the release layer may be formed on a part surface of the substrate or may be formed on the entire surface. Examples of forming the release layer on a part of the surface of the substrate include forming the release layer only in a predetermined range on the surface of the substrate, and forming the release layer in a pattern such as a dot pattern or a line and space pattern on the entire surface of the substrate. There are modes of formation and the like.
- the substrate means a substrate on which the composition for forming a release layer of the present invention is coated, which is used for manufacturing a flexible electronic device or the like.
- the substrate for example, alkaline glass is preferable.
- alkaline glass include soda glass and borosilicate glass, and soda glass is preferable from the viewpoint of price.
- the surface of the substrate may be made of a single material or may be made of two or more materials.
- a mode in which the surface of the substrate is composed of two or more materials is a mode in which a certain range of the surface of the substrate is composed of a certain material and the remaining surface is composed of other materials, and a dot pattern is formed on the entire surface of the substrate. , Line-and-space pattern, and other patterns in which the material is present in other materials.
- the method of coating is not particularly limited, but for example, a cast coating method, a spin coating method, a blade coating method, a dip coating method, a roll coating method, a bar coating method, a die coating method, an inkjet method, and a printing method (relief plate, concave plate, flat plate). , Screen printing, etc.).
- appliances used for heating include hot plates, ovens, and the like.
- the heating atmosphere may be under air or under an inert gas, and may be under normal pressure or reduced pressure.
- the thickness of the release layer is usually about 0.01 to 50 ⁇ m, preferably about 0.01 to 20 ⁇ m, more preferably about 0.01 to 5 ⁇ m from the viewpoint of productivity, and the thickness of the coating film before heating. To achieve the desired thickness.
- the release layer of the present invention has excellent adhesion to a substrate, particularly a glass substrate, as well as appropriate adhesion to a resin substrate and appropriate peelability. Therefore, the release layer of the present invention detaches the resin substrate from the substrate together with the circuit and the like formed on the resin substrate without damaging the resin substrate of the device in the manufacturing process of the flexible electronic device. It can be preferably used to make it.
- the release layer forming composition of the present invention is used to form a release layer on the glass substrate by the above-mentioned method.
- the resin substrate forming solution for forming a resin substrate on the release layer and firing the obtained coating film the resin fixed to the glass substrate via the release layer of the present invention. Form a substrate.
- the firing temperature of the coating film is appropriately set according to the type of resin and the like, but in the present invention, the maximum temperature at the time of firing is preferably 200 to 250 ° C, preferably 210 to 250 ° C. It is more preferable to set the temperature to 220 to 240 ° C.
- the maximum temperature at the time of firing during the production of the resin substrate within this range, the adhesion between the release layer as the base and the substrate, and the appropriate adhesion and peelability between the release layer and the resin substrate are further improved. be able to. In this case as well, as long as the maximum temperature is within the above range, the step of firing at a temperature lower than that may be included.
- the resin substrate covers the entire release layer, and the resin substrate is formed in an area larger than the area of the release layer.
- the resin substrate include a resin substrate made of an acrylic polymer and a resin substrate made of a cycloolefin polymer.
- the method for forming the resin substrate may be a conventional method.
- the resin substrate preferably has a light transmittance of 80% or more at a wavelength of 400 nm.
- a desired circuit is formed on the resin substrate fixed to the substrate via the release layer of the present invention, if necessary, and then, for example, the resin substrate is cut along the release layer, and this circuit is formed.
- the resin substrate is peeled from the release layer to separate the resin substrate and the substrate.
- a part of the substrate may be cut together with the release layer.
- the resin substrate can be separated from the release layer with a release force of 0.2 N / 25 mm or less.
- the polymer additive (D) is the polymer additive D2 or the polymer additive D3
- the resin substrate can be peeled from the peeling layer with a peeling force of 0.15 N / 25 mm or less.
- the polymer additive (D) is the polymer additive D1
- the resin substrate can be peeled from the peeling layer with a peeling force of 0.1 N / 25 mm or less.
- PGME Propylene Glycol Monomethyl Ether
- PGMEA Propylene Glycol Monomethyl Ether Acetate
- NMP N-Methylpyrrolidone
- PL-LI 1,3,4,6-tetrax (methoxyethyl) glycoluryl (manufactured by Ornex, trade name: POWDERLINK 1174)
- BPDA Dianhydride PDA of biphenylate: p-phenylenediamine
- PPTS Pyridinium p-toluenesulfonate
- PHA Phosphoric acid hydrate
- HPMA 2-Hydroxypropyl methacrylate
- HEMA 2-Hydroxyethyl methacrylate
- ADMA 2 Methacrylic acid -Adamantyl
- CHMI Cyclohexylmaleimide
- HFiPMA Methacrylic acid 1,1,1,3,3,3-hexafluoroisopropylPFHMA: 2- (per
- the weight average molecular weight (Mw) of the polymer is measured by a GPC apparatus manufactured by JASCO Corporation (column: Shodex® KD801 and KD805 (manufactured by Showa Denko KK); eluent: dimethylformamide / LiBr. H 2 O (29.6 mM) / H 3 PO 4 (29.6 mM) / THF (0.1% by mass); Flow rate: 1.0 mL / min; Column temperature: 40 ° C; Mw: Standard polystyrene conversion value) It was done using.
- composition F1 for forming a resin substrate In an eggplant flask containing 100 g of carbon tetrachloride, 10 g of Zeonoa (registered trademark) 1020R (cycloolefin polymer manufactured by Nippon Zeon Corporation) and Epolide (registered trademark) GT401 3 g (manufactured by Daicel Corporation) was added. This solution was stirred and dissolved in a nitrogen atmosphere for 24 hours to prepare a resin substrate forming composition F1.
- Zeonoa registered trademark
- Epolide registered trademark
- Zeonoa registered trademark
- 1060R cycloolefin polymer manufactured by Nippon Zeon Corporation
- composition for forming a release layer [Example 1-1] Preparation of composition 1 for forming a release layer PL-LI 0.06 g, PPTS 0.15 g, and acrylic were added to 1 g of the reaction solution obtained in Synthesis Example 1. 0.08 g of a polymer (S1) solution and PGMEA were added and diluted with PGMEA so that the solid content concentration was 5% by mass and the PGMEA concentration was 30% by mass to prepare a release layer forming composition 1.
- Example 1-2 Preparation of composition 2 for forming a release layer Peeling is performed in the same manner as in Example 1-1 except that an acrylic polymer (S2) solution is used instead of the acrylic polymer (S1) solution.
- S2 acrylic polymer
- S1 acrylic polymer
- Example 1-3 Preparation of composition 3 for forming a release layer Peeling is performed in the same manner as in Example 1-1 except that an acrylic polymer (S3) solution is used instead of the acrylic polymer (S1) solution.
- S3 solution is used instead of the acrylic polymer (S1) solution.
- S1 solution was prepared.
- Example 1-4 Preparation of composition 3 for forming a release layer Peeling is performed in the same manner as in Example 1-1 except that an acrylic polymer (S4) solution is used instead of the acrylic polymer (S1) solution.
- S4 solution is used instead of the acrylic polymer (S1) solution.
- the layer-forming composition 4 was prepared.
- composition 4 for forming a release layer (using phosphomolybdic acid) PL-LI 0.04 g, PHAS 0.15 g, acrylic polymer (S4) solution 0.05 g, and PGMEA were added to 1 g of the reaction solution obtained in Synthesis Example 1, and the solid content concentration was 1% by mass and the PGMEA concentration was 30 mass.
- the composition 5 for forming a release layer was prepared by diluting with PGME so as to be%.
- release layer and resin substrate [Example 2-1] Using a spin coater (condition: rotation speed 1,000 rpm for about 30 seconds), the release layer forming composition 1 was applied onto an alkaline glass substrate (100 mm ⁇ 100 mm, the same applies hereinafter). The obtained coating film is heated at 100 ° C. for 2 minutes using a hot plate, and then heated at 230 ° C. for 10 minutes using a hot plate to form a release layer having a thickness of about 0.1 ⁇ m on an alkaline glass substrate. Then, a glass substrate with a release layer was obtained.
- the resin substrate forming composition F1 was applied onto the release layer (resin thin film) on the glass substrate using a spin coater (condition: rotation speed 200 rpm for about 15 seconds).
- the obtained coating film was heated at 80 ° C. for 2 minutes using a hot plate, and then heated at 230 ° C. for 30 minutes using a hot plate to form a resin substrate having a thickness of about 3 ⁇ m on the release layer.
- a resin substrate and a glass substrate with a release layer were obtained.
- the resin substrate showed a transmittance of 90% or more at 400 nm.
- Example 2-2 A release layer and a resin substrate were prepared in the same manner as in Example 2-1 except that the release layer forming composition 2 was used instead of the release layer forming composition 1. A resin substrate and a glass substrate with a release layer were obtained.
- Example 2-3 A release layer and a resin substrate were prepared in the same manner as in Example 2-2 except that the resin substrate forming composition F2 was used instead of the resin substrate forming composition F1, and the alkali glass substrate with the release layer and the resin substrate were prepared. A resin substrate and an alkali glass substrate with a release layer were obtained. Then, as a result of measuring the light transmittance using an ultraviolet visible spectrophotometer (UV-2600 manufactured by Shimadzu Corporation), the resin substrate showed a transmittance of 90% or more at 400 nm.
- UV-2600 ultraviolet visible spectrophotometer
- Example 2-4 A release layer and a resin substrate were prepared in the same manner as in Example 2-1 except that the release layer forming composition 3 was used instead of the release layer forming composition 1, and the glass substrate and the resin with the release layer were prepared. Substrate ⁇ A glass substrate with a release layer was obtained.
- Example 2-5 A release layer and a resin substrate were prepared in the same manner as in Example 2-1 except that the release layer forming composition 4 was used instead of the release layer forming composition 1, and the glass substrate and the resin with the release layer were prepared. Substrate ⁇ A glass substrate with a release layer was obtained.
- Example 2-1 A release layer and a resin substrate were prepared in the same manner as in Example 2-1 except that the release layer forming composition 4 was used instead of the release layer forming composition 1, and the glass substrate and the resin with the release layer were prepared. Substrate ⁇ A glass substrate with a release layer was obtained.
- the resin substrate forming composition F1 was applied onto the release layer (resin thin film) on the glass substrate using a spin coater (condition: rotation speed 200 rpm for about 15 seconds).
- the obtained coating film was heated at 80 ° C. for 2 minutes using a hot plate, and then heated at 230 ° C. for 30 minutes using a hot plate to form a resin substrate having a thickness of about 3 ⁇ m on the release layer.
- a resin substrate and a glass substrate with a release layer were obtained.
- Comparative Example 2-1 is excellent in adhesion to the alkaline glass substrate, but is inferior in peelability from the resin substrate, while Comparative Example 2-2 is inferior in adhesion to the alkaline glass substrate. It was confirmed that there was no peelability from the resin substrate.
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Abstract
Description
1. 下記(A)から(E)成分を含み、アルカリガラス基板上に塗布後、300℃以以下で焼成した膜が、有機系フィルムと接触させた場合に、0.2N/25mm以下の剥離力を有する、アルカリガラス用剥離層形成用組成物。
(A)下記式(1)で表される繰り返し単位を含むポリウレア、
(B)スルホン酸化合物又はその塩、
(C)ヒドロキシアルキル基及び/又はアルコキシメチル基で置換された窒素原子を有する化合物から選ばれる架橋剤、
(D)下記式(a1)で表される繰り返し単位、下記式(b)で表される繰り返し単位及び下記式(c)で表される繰り返し単位を含む高分子添加剤:(A)ポリウレア100質量部に対して3~100質量部、
(E)溶剤
X1は、下記式(1-1)、(1-2)、(1-3)又は(1-4)で表される基であり、
Q1は、下記式(1-5)又は(1-6)で表される基である。
2. (D)高分子添加剤の式(b)で表される繰り返し単位において、RCが、炭素数2~10のヒドロキシアルキル基又は1~4個のヒドロキシ基を有する炭素数の6~20の多環式アルキル基であって、ヒドロキシ基が結合する炭素原子は第2級又は第3級炭素原子であり、かつ、式(a1)で表される繰り返し単位の含有割合が、(D)高分子添加剤の全繰り返し単位中20モル%以上80モル%以下である1のアルカリガラス用剥離層形成用組成物。
3. X1が、式(1-3)で表される基である1又は2のアルカリガラス用剥離層形成用組成物。
4. R3が、2-プロペニル基である3のアルカリガラス用剥離層形成用組成物。
5. Q1が、式(1-5)で表される基である1~4のいずれかのアルカリガラス用剥離層形成用組成物。
6. (C)架橋剤が、下記式(C-1)~(C-7)のいずれかで表される化合物である1~6のいずれかのアルカリガラス用剥離層形成用組成物、
7. (C)架橋剤の含有量が、(A)ポリウレア100質量部に対し、10~100質量部である1~6のいずれかのアルカリガラス用剥離層形成用組成物。
8. 1~7のいずれかのアルカリガラス用剥離層形成用組成物から得られる剥離層。
9. 8の剥離層に、波長400nmの光透過率が80%以上である樹脂層が積層された積層体。
10. 1~7のいずれかのアルカリガラス用剥離層形成用組成物を基体に塗布し、剥離層を形成する工程、
前記剥離層上に、波長400nmの光透過率が80%以上である樹脂基板を形成する工程、及び
前記樹脂基板を、0.2N/25mm以下の剥離力で剥離する工程
を含む樹脂基板の製造方法。
また、フレキシブル電子デバイスの製造プロセスにおいて、基体上に形成された樹脂基板や、さらにその上に設けられる回路等に損傷を与えることなく、当該回路等とともに当該樹脂基板を当該基体から分離することができる。
したがって、本発明の剥離層形成用組成物は、樹脂基板を備えるフレキシブル電子デバイスの製造プロセスの高速化やその歩留り向上等に寄与し得る。
本発明の剥離層形成用組成物は、(A)所定の繰り返し単位を含むポリウレア、(B)酸化合物又はその塩、(C)ヒドロキシアルキル基及び/又はアルコキシメチル基で置換された窒素原子を有する化合物から選ばれる架橋剤、(D)所定の繰り返し単位を含む高分子添加剤、並びに(E)溶剤を含むものである。
(A)成分のポリウレアは、下記式(1)で表される繰り返し単位を含む。
本発明の剥離層形成用組成物は、(B)成分として酸化合物又はその塩を含む。前記酸化合物としては、p-トルエンスルホン酸、トリフルオロメタンスルホン酸、カンファースルホン酸、スルホサリチル酸、4-クロロベンゼンスルホン酸、4-ヒドロキシベンゼンスルホン酸、ベンゼンジスルホン酸、1-ナフタレンスルホン酸等のスルホン酸化合物などが挙げられる。また、前記酸化合物の塩としては、前記酸のピリジニウム塩、イソプロパノールアミン塩、N-メチルモルホリン塩等が挙げられ、具体的には、p-トルエンスルホン酸ピリジニウム、1-ナフタレンスルホン酸ピリジニウム、イソプロパノールアミンp-トルエンスルホン酸塩、N-メチルモルホリンp-トルエンスルホン酸塩等が挙げられる。
本発明の剥離層形成用組成物は、(C)成分として架橋剤を含む。前記架橋剤は、ヒドロキシアルキル基及び/又はアルコキシメチル基で置換された窒素原子を有する化合物から選択されるものである。
本発明の剥離層形成用組成物は、(D)成分として、下記式(a1)で表される繰り返し単位、下記式(b)で表される繰り返し単位及び下記式(c)で表される繰り返し単位を含む高分子添加剤を含む。
本発明の剥離層形成用組成物は、(E)成分として溶剤を含む。前記溶剤としては、炭素数3~20のグリコールエーテル系溶剤、炭素数3~20のエステル系溶剤、炭素数3~20のケトン系溶剤、エーテル結合を有するアミド系溶媒、又は炭素数3~20の環状化合物系溶剤が好ましい。
前記エーテル結合を有するアミド系溶媒は、3-メトキシN,Nジメチルプロパンアミド、3-ブトキシN,Nジメチルプロパンアミド等が挙げられる。
前記エステル系溶剤としては、乳酸エチル、γ-ブチロラクトン、2-ヒドロシキイソ酪酸メチル、2-ヒドロシキイソ酪酸エチル等が挙げられる。
前記ケトン系溶剤としては、メチルエチルケトン、シクロヘキサノン、シクロペンタノン、ベンゾフェノン等が挙げられる。
前記環状化合物溶剤としては、γ-ブチロラクトン等が挙げられる。
本発明の剥離層形成用組成物は、必要に応じて界面活性剤を含んでもよい。界面活性剤を添加することで、基板に対する前記剥離層形成用組成物の塗布性を向上させることができる。前記界面活性剤としては、ノニオン系界面活性剤、フッ素系界面活性剤、シリコーン系界面活性剤等の公知の界面活性剤を用いることができる。
本発明の剥離層形成用組成物の調製方法は、特に限定されない。調製方法としては、例えば、溶剤に溶解した(A)成分の溶液に(B)成分、(C)成分、(D)成分及び(E)成分等を所定の割合で混合し、均一な溶液とする方法や、前記調製方法の適当な段階において、必要に応じてその他添加剤を更に添加して混合する方法が挙げられる。
本発明の剥離層形成用組成物を、基体上に塗布した後、180~250℃で焼成する工程を含む焼成法にて、基体との優れた密着性及び樹脂基板との適度な密着性と適度な剥離性とを有する剥離層を得ることができる。
本発明の剥離層を用いたフレキシブル電子デバイスの製造方法の一例について説明する。まず、本発明の剥離層形成用組成物を用いて、前述の方法によって、ガラス基体上に剥離層を形成する。この剥離層の上に、樹脂基板を形成するための樹脂基板形成用溶液を塗布し、得られた塗膜を焼成することで、本発明の剥離層を介して、ガラス基体に固定された樹脂基板を形成する。
PGME:プロピレングリコールモノメチルエーテル
PGMEA:プロピレングリコールモノメチルエーテルアセテート
NMP:N-メチルピロリドン
PL-LI:1,3,4,6-テトラキス(メトキシエチル)グリコールウリル(オルネクス社製、商品名:POWDERLINK 1174)
BPDA:ビフェニル酸ニ無水物
PDA:p-フェニレンジアミン
PPTS:p-トルエンスルホン酸ピリジニウム
PHA:リンモリブデン酸水和物
HPMA:メタクリル酸2-ヒドロキシプロピル
HEMA:メタクリル酸2-ヒドロキシエチル
ADMA:メタクリル酸2-アダマンチル
CHMI:シクロヘキシルマレイミド
HFiPMA:メタクリル酸1,1,1,3,3,3-ヘキサフルオロイソプロピル
PFHMA:メタクリル酸2-(パーフルオロヘキシル)エチル
HADM:メタクリル酸3-ヒドロキシ-1-アダマンチル
DHADM:メタクリル酸3,5-ジヒドロキシ-1-アダマンチル
AIBN:アゾビスイソブチロニトリル
[合成例1]ポリウレア(L1)の合成
モノアリルジグリシジルイソシアヌル酸(四国化成工業(株)製)100g、5,5-ジエチルバルビツール酸66.4g及びベンジルトリエチルアンモニウムクロリド4.1gをプロピレングリコールモノメチルエーテル682gに溶解させた後、130℃で24時間反応させ、ポリウレア(L1)を含む溶液(固形分濃度20質量%)を得た。GPC分析の結果、得られたポリウレア(L1)のMwは8,000、Mw/Mnは1.5であった。
HFiPMA2.01g、HADM2.01g、ADMA2.50g及びAIBN0.23gをPGME28.2gに溶解し、70℃にて20時間反応させ、アクリルポリマー(S1)溶液(固形分濃度20質量%)を得た。各単位の組成比は、HFiPMA:HADM:ADMA=30:30:40であった。GPC分析の結果、得られたアクリルポリマー(S1)のMwは5,240、Mw/Mnは1.8であった。
HFiPMA2.86g、HADM1.07g、ADMA3.00g及びAIBN0.25gをPGME29.9gに溶解し、70℃にて20時間反応させ、アクリルポリマー(S2)溶液(固形分濃度20質量%)を得た。各単位の組成比は、HFiPMA:HADM:ADMA=40:15:45であった。GPC分析の結果、得られたアクリルポリマー(S1)のMwは5,080、Mw/Mnは1.8であった。
HFiPMA2.38g、DHADM0.95g、ADMA2.50g及びAIBN0.21gをPGME25.2gに溶解し、70℃にて20時間反応させ、アクリルポリマー(S2)溶液(固形分濃度20質量%)を得た。各単位の組成比は、HFiPMA:DHADM:ADMA=40:15:45であった。GPC分析の結果、得られたアクリルポリマー(S1)のMwは4,740、Mw/Mnは1.8であった。
HFiPMA4.02g、HPMA2.22g、ADMA5.00g及びAIBN0.47gをPGME49.1gに溶解し、70℃にて20時間反応させ、アクリルポリマー(S1)溶液(固形分濃度20質量%)を得た。各単位の組成比は、HFiPMA:HPMA:ADMA=30:30:40であった。GPC分析の結果、得られたアクリルポリマー(S1)のMwは5,040、Mw/Mnは1.7であった。
p-PDA3.218g(30mmol)をNMP88.2gに溶解させた。得られた溶液にBPDA8.581g(29mmol)を加え、窒素雰囲気下、23℃で24時間反応させ、ポリアミック酸S5を得た。ポリアミック酸S5のMwは107,300、Mw/Mnは4.6であった。
四塩化炭素100gを入れたナスフラスコに、ゼオノア(登録商標)1020R(日本ゼオン(株)製シクロオレフィンポリマー)10g及びエポリード(登録商標)GT401((株)ダイセル製)3gを添加した。この溶液を、窒素雰囲気下、24時間攪拌して溶解し、樹脂基板形成用組成物F1を調製した。
四塩化炭素100gを入れたナスフラスコに、ゼオノア(登録商標)1060R(日本ゼオン(株)製シクロオレフィンポリマー)10gを添加した。この溶液を、窒素雰囲気下、24時間攪拌して溶解し、樹脂基板形成用組成物F2を調製した。
[実施例1-1]剥離層形成用組成物1の調製
合成例1で得られた反応液1gに、PL-LI0.06g、PPTS0.15g、アクリルポリマー(S1)溶液0.08g、及びPGMEAを加え、固形分濃度が5質量%、PGMEA濃度が30質量%となるようにPGMEで希釈し、剥離層形成用組成物1を調製した。
アクリルポリマー(S1)溶液のかわりに、アクリルポリマー(S2)溶液を用いた以外は、実施例1-1と同様の方法で、剥離層形成用組成物2を調製した。
アクリルポリマー(S1)溶液のかわりに、アクリルポリマー(S3)溶液を用いた以外は、実施例1-1と同様の方法で、剥離層形成用組成物3を調製した。
アクリルポリマー(S1)溶液のかわりに、アクリルポリマー(S4)溶液を用いた以外は、実施例1-1と同様の方法で、剥離層形成用組成物4を調製した。
合成例1で得られた反応液1gに、PL-LI0.04g、PHAS0.15g、アクリルポリマー(S4)溶液0.05g、及びPGMEAを加え、固形分濃度が1質量%、PGMEA濃度が30質量%となるようにPGMEで希釈し、剥離層形成用組成物5を調製した。
ポリアミック酸(S5)溶液をNMPで濃度が5質量%に調整し、剥離層形成用組成物6を調製した。
[実施例2-1]
スピンコータ(条件:回転数1,000rpmで約30秒)を用いて、剥離層形成用組成物1を、アルカリガラス基板(100mm×100mm、以下同様)の上に塗布した。得られた塗膜を、ホットプレートを用いて100℃で2分間加熱し、次いでホットプレートを用いて230℃で10分間加熱し、アルカリガラス基板上に厚さ約0.1μmの剥離層を形成し、剥離層付きガラス基板を得た。
その後、すぐにスピンコータ(条件:回転数200rpmで約15秒)を用いて、前記ガラス基板上の剥離層(樹脂薄膜)の上に樹脂基板形成用組成物F1を塗布した。得られた塗膜を、ホットプレートを用いて80℃で2分間加熱し、その後、ホットプレートを用いて230℃で30分間加熱し、剥離層上に厚さ約3μmの樹脂基板を形成し、樹脂基板・剥離層付きガラス基板を得た。その後、紫外可視分光光度計((株)島津製作所製UV-2600)を用いて光透過率を測定した結果、樹脂基板は、400nmで90%以上の透過率を示した。
剥離層形成用組成物1のかわりに剥離層形成用組成物2を用いた以外は、実施例2-1と同様の方法で、剥離層及び樹脂基板を作製し、剥離層付きアルカリガラス基板及び樹脂基板・剥離層付きガラス基板を得た。
樹脂基板形成用組成物F1のかわりに樹脂基板形成用組成物F2を用いた以外は、実施例2-2と同様の方法で、剥離層及び樹脂基板を作製し、剥離層付きアルカリガラス基板及び樹脂基板・剥離層付きアルカリガラス基板を得た。その後、紫外可視分光光度計((株)島津製作所製UV-2600)を用いて光透過率を測定した結果、樹脂基板は、400nmで90%以上の透過率を示した。
剥離層形成用組成物1のかわりに剥離層形成用組成物3を用いた以外は、実施例2-1と同様の方法で、剥離層及び樹脂基板を作製し、剥離層付きガラス基板及び樹脂基板・剥離層付きガラス基板を得た。
剥離層形成用組成物1のかわりに剥離層形成用組成物4を用いた以外は、実施例2-1と同様の方法で、剥離層及び樹脂基板を作製し、剥離層付きガラス基板及び樹脂基板・剥離層付きガラス基板を得た。
剥離層形成用組成物1のかわりに剥離層形成用組成物4を用いた以外は、実施例2-1と同様の方法で、剥離層及び樹脂基板を作製し、剥離層付きガラス基板及び樹脂基板・剥離層付きガラス基板を得た。
スピンコータ(条件:回転数3,000rpmで約30秒)を用いて、剥離層形成用組成物5を、アルカリガラス基板(100mm×100mm、以下同様)の上に塗布した。得られた塗膜を、ホットプレートを用いて100℃で2分間加熱し、次いでホットプレートを用いて230℃で60分間加熱し、アルカリガラス基板上に厚さ約0.1μmの剥離層を形成し、剥離層付きガラス基板を得た。
その後、すぐにスピンコータ(条件:回転数200rpmで約15秒)を用いて、前記ガラス基板上の剥離層(樹脂薄膜)の上に樹脂基板形成用組成物F1を塗布した。得られた塗膜を、ホットプレートを用いて80℃で2分間加熱し、その後、ホットプレートを用いて230℃で30分間加熱し、剥離層上に厚さ約3μmの樹脂基板を形成し、樹脂基板・剥離層付きガラス基板を得た。
前記実施例2-1~2-4及び比較例2-1~2-4で得られた樹脂基板・剥離層付きガラス基板について、剥離層とガラス基板との剥離性を、下記方法にて確認した。なお、下記の試験は、同一のガラス基板で行った。
実施例2-1~2-4及び比較例2-1~2-4で得られた剥離層付きガラス基板上の剥離層をクロスカット(縦横2mm間隔、以下同様)し、25マスカットを行った。すなわち、このクロスカットにより、2mm四方のマス目を25個形成した。
この25マスカット部分に粘着テープを張り付けて、そのテープを剥がし、以下の基準に基づき、剥離の程度を評価した。結果を表1に示す。
<判定基準>
5B:0%剥離(剥離なし)
4B:5%未満の剥離
3B:5~15%未満の剥離
2B:15~35%未満の剥離
1B:35~65%未満の剥離
0B:65%~80%未満の剥離
B:80%~95%未満の剥離
A:95%~100%未満の剥離
AA:100%剥離(すべて剥離)
実施例2-1~2-4及び比較例2-1~2-4で得られた樹脂基板・剥離層付きガラス基板に、25mm×50mmの短冊を作製した。更に、セロテープ(登録商標)(ニチバン(株)製CT-24)を貼った後、オートグラフAGS-X500N((株)島津製作所製)を用いて、剥離角度90°、剥離速度300mm/minで剥離し、以下の基準に基づき、剥離力を測定した。
AAA:0.2N/25mm以下
AA:0.3~0.2N/25mm
A:~0.3N/25mm以上
×:剥離せず
Claims (10)
- 下記(A)から(E)成分を含み、アルカリガラス基板上に塗布後、300℃以以下で焼成した膜が、有機系フィルムと接触させた場合に、0.2N/25mm以下の剥離力を有する、アルカリガラス用剥離層形成用組成物。
(A)下記式(1)で表される繰り返し単位を含むポリウレア、
(B)スルホン酸化合物又はその塩、
(C)ヒドロキシアルキル基及び/又はアルコキシメチル基で置換された窒素原子を有する化合物から選ばれる架橋剤、
(D)下記式(a1)で表される繰り返し単位、下記式(b)で表される繰り返し単位及び下記式(c)で表される繰り返し単位を含む高分子添加剤:(A)ポリウレア100質量部に対して3~100質量部、
(E)溶剤
X1は、下記式(1-1)、(1-2)、(1-3)又は(1-4)で表される基であり、
Q1は、下記式(1-5)又は(1-6)で表される基である。
- (D)高分子添加剤の式(b)で表される繰り返し単位において、RCが、炭素数2~10のヒドロキシアルキル基又は1~4個のヒドロキシ基を有する炭素数の6~20の多環式アルキル基であって、ヒドロキシ基が結合する炭素原子が、第2級又は第3級炭素原子であり、かつ、式(a1)で表される繰り返し単位の含有割合が、(D)高分子添加剤の全繰り返し単位中20モル%以上80モル%以下である請求項1記載のアルカリガラス用剥離層形成用組成物。
- X1が、式(1-3)で表される基である請求項1又は2記載のアルカリガラス用剥離層形成用組成物。
- R3が、2-プロペニル基である請求項3記載のアルカリガラス用剥離層形成用組成物。
- Q1が、式(1-5)で表される基である請求項1~4のいずれか1項記載のアルカリガラス用剥離層形成用組成物。
- (C)架橋剤の含有量が、(A)ポリウレア100質量部に対し、10~100質量部である請求項1~6のいずれか1項記載のアルカリガラス用剥離層形成用組成物。
- 請求項1~7のいずれか1項記載のアルカリガラス用剥離層形成用組成物から得られる剥離層。
- 請求項8記載の剥離層に、波長400nmの光透過率が80%以上である樹脂層が積層された積層体。
- 請求項1~7のいずれか1項記載のアルカリガラス用剥離層形成用組成物を基体に塗布し、剥離層を形成する工程、
前記剥離層上に、波長400nmの光透過率が80%以上である樹脂基板を形成する工程、及び
前記樹脂基板を、0.2N/25mm以下の剥離力で剥離する工程
を含む樹脂基板の製造方法。
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JPWO2021149705A1 (ja) | 2021-07-29 |
CN115003505A (zh) | 2022-09-02 |
KR20220130178A (ko) | 2022-09-26 |
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