WO2019054412A1 - 硬化性組成物 - Google Patents
硬化性組成物 Download PDFInfo
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- WO2019054412A1 WO2019054412A1 PCT/JP2018/033822 JP2018033822W WO2019054412A1 WO 2019054412 A1 WO2019054412 A1 WO 2019054412A1 JP 2018033822 W JP2018033822 W JP 2018033822W WO 2019054412 A1 WO2019054412 A1 WO 2019054412A1
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- meth
- parts
- curable composition
- acrylate
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- 239000000203 mixture Substances 0.000 title claims abstract description 114
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 170
- 239000000178 monomer Substances 0.000 claims abstract description 144
- -1 cyclic ether compound Chemical class 0.000 claims description 224
- 229920001721 polyimide Polymers 0.000 claims description 74
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 43
- 239000001301 oxygen Substances 0.000 claims description 43
- 229910052760 oxygen Inorganic materials 0.000 claims description 43
- 239000000758 substrate Substances 0.000 claims description 41
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 29
- 239000003505 polymerization initiator Substances 0.000 claims description 24
- 125000003700 epoxy group Chemical group 0.000 claims description 20
- 238000010538 cationic polymerization reaction Methods 0.000 claims description 15
- 239000007870 radical polymerization initiator Substances 0.000 claims description 15
- 230000035699 permeability Effects 0.000 claims description 13
- 239000010954 inorganic particle Substances 0.000 claims description 12
- 125000003566 oxetanyl group Chemical group 0.000 claims description 11
- 125000000524 functional group Chemical group 0.000 claims description 10
- 150000001768 cations Chemical class 0.000 claims description 2
- 239000010408 film Substances 0.000 description 158
- 150000001875 compounds Chemical class 0.000 description 69
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 description 47
- 229920000642 polymer Polymers 0.000 description 43
- 125000004432 carbon atom Chemical group C* 0.000 description 40
- 239000010410 layer Substances 0.000 description 37
- 239000004593 Epoxy Substances 0.000 description 36
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- 230000004888 barrier function Effects 0.000 description 30
- 239000002904 solvent Substances 0.000 description 30
- 239000004642 Polyimide Substances 0.000 description 29
- 238000000576 coating method Methods 0.000 description 28
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 28
- 239000002966 varnish Substances 0.000 description 28
- 125000003118 aryl group Chemical group 0.000 description 27
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- 239000002245 particle Substances 0.000 description 21
- 125000000217 alkyl group Chemical group 0.000 description 19
- 238000001723 curing Methods 0.000 description 18
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- 125000005843 halogen group Chemical group 0.000 description 16
- 150000002430 hydrocarbons Chemical group 0.000 description 16
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- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 13
- NVKGJHAQGWCWDI-UHFFFAOYSA-N 4-[4-amino-2-(trifluoromethyl)phenyl]-3-(trifluoromethyl)aniline Chemical compound FC(F)(F)C1=CC(N)=CC=C1C1=CC=C(N)C=C1C(F)(F)F NVKGJHAQGWCWDI-UHFFFAOYSA-N 0.000 description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 13
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- 238000005259 measurement Methods 0.000 description 13
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- 125000001153 fluoro group Chemical group F* 0.000 description 12
- 238000011282 treatment Methods 0.000 description 12
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 12
- 239000004962 Polyamide-imide Substances 0.000 description 11
- 125000001931 aliphatic group Chemical group 0.000 description 11
- 229910052731 fluorine Inorganic materials 0.000 description 11
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 11
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- 229920002312 polyamide-imide Polymers 0.000 description 11
- 150000000000 tetracarboxylic acids Chemical class 0.000 description 11
- PTJWCLYPVFJWMP-UHFFFAOYSA-N 2-[[3-hydroxy-2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)COCC(CO)(CO)CO PTJWCLYPVFJWMP-UHFFFAOYSA-N 0.000 description 10
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- AHHWIHXENZJRFG-UHFFFAOYSA-N oxetane Chemical compound C1COC1 AHHWIHXENZJRFG-UHFFFAOYSA-N 0.000 description 9
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- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 8
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- 239000003999 initiator Substances 0.000 description 8
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- MXPYJVUYLVNEBB-UHFFFAOYSA-N 2-[2-(2-carboxybenzoyl)oxycarbonylbenzoyl]oxycarbonylbenzoic acid Chemical compound OC(=O)C1=CC=CC=C1C(=O)OC(=O)C1=CC=CC=C1C(=O)OC(=O)C1=CC=CC=C1C(O)=O MXPYJVUYLVNEBB-UHFFFAOYSA-N 0.000 description 7
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- 125000001309 chloro group Chemical group Cl* 0.000 description 7
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 7
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- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 6
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 6
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 6
- 125000003277 amino group Chemical group 0.000 description 6
- 238000005452 bending Methods 0.000 description 6
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- 239000007795 chemical reaction product Substances 0.000 description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 6
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 5
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- 125000003545 alkoxy group Chemical group 0.000 description 5
- 239000012298 atmosphere Substances 0.000 description 5
- BTANRVKWQNVYAZ-UHFFFAOYSA-N butan-2-ol Chemical compound CCC(C)O BTANRVKWQNVYAZ-UHFFFAOYSA-N 0.000 description 5
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- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 5
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- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 5
- 239000001294 propane Substances 0.000 description 5
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 5
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- 238000005160 1H NMR spectroscopy Methods 0.000 description 4
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 4
- GWHLJVMSZRKEAQ-UHFFFAOYSA-N 3-(2,3-dicarboxyphenyl)phthalic acid Chemical compound OC(=O)C1=CC=CC(C=2C(=C(C(O)=O)C=CC=2)C(O)=O)=C1C(O)=O GWHLJVMSZRKEAQ-UHFFFAOYSA-N 0.000 description 4
- QYIMZXITLDTULQ-UHFFFAOYSA-N 4-(4-amino-2-methylphenyl)-3-methylaniline Chemical compound CC1=CC(N)=CC=C1C1=CC=C(N)C=C1C QYIMZXITLDTULQ-UHFFFAOYSA-N 0.000 description 4
- WVDRSXGPQWNUBN-UHFFFAOYSA-N 4-(4-carboxyphenoxy)benzoic acid Chemical compound C1=CC(C(=O)O)=CC=C1OC1=CC=C(C(O)=O)C=C1 WVDRSXGPQWNUBN-UHFFFAOYSA-N 0.000 description 4
- HLBLWEWZXPIGSM-UHFFFAOYSA-N 4-Aminophenyl ether Chemical compound C1=CC(N)=CC=C1OC1=CC=C(N)C=C1 HLBLWEWZXPIGSM-UHFFFAOYSA-N 0.000 description 4
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 4
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- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 4
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- JCRRFJIVUPSNTA-UHFFFAOYSA-N 4-[4-(4-aminophenoxy)phenoxy]aniline Chemical compound C1=CC(N)=CC=C1OC(C=C1)=CC=C1OC1=CC=C(N)C=C1 JCRRFJIVUPSNTA-UHFFFAOYSA-N 0.000 description 3
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- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 3
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- 230000001681 protective effect Effects 0.000 description 1
- FYNROBRQIVCIQF-UHFFFAOYSA-N pyrrolo[3,2-b]pyrrole-5,6-dione Chemical class C1=CN=C2C(=O)C(=O)N=C21 FYNROBRQIVCIQF-UHFFFAOYSA-N 0.000 description 1
- IZMJMCDDWKSTTK-UHFFFAOYSA-N quinoline yellow Chemical class C1=CC=CC2=NC(C3C(C4=CC=CC=C4C3=O)=O)=CC=C21 IZMJMCDDWKSTTK-UHFFFAOYSA-N 0.000 description 1
- SBYHFKPVCBCYGV-UHFFFAOYSA-N quinuclidine Chemical compound C1CC2CCN1CC2 SBYHFKPVCBCYGV-UHFFFAOYSA-N 0.000 description 1
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- 239000005871 repellent Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 229960001860 salicylate Drugs 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 125000004213 tert-butoxy group Chemical group [H]C([H])([H])C(O*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- 150000003628 tricarboxylic acids Chemical class 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 125000001889 triflyl group Chemical group FC(F)(F)S(*)(=O)=O 0.000 description 1
- YFTHZRPMJXBUME-UHFFFAOYSA-N tripropylamine Chemical compound CCCN(CCC)CCC YFTHZRPMJXBUME-UHFFFAOYSA-N 0.000 description 1
- SOLUNJPVPZJLOM-UHFFFAOYSA-N trizinc;distiborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-][Sb]([O-])([O-])=O.[O-][Sb]([O-])([O-])=O SOLUNJPVPZJLOM-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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- 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
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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- 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
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/285—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyethers
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- 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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
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- 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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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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
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
- C08F2/50—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F216/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
- C08F216/12—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an ether radical
-
- 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
- C08G59/14—Polycondensates modified by chemical after-treatment
- C08G59/1433—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds
- C08G59/1438—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds containing oxygen
- C08G59/1455—Monocarboxylic acids, anhydrides, halides, or low-molecular-weight esters thereof
- C08G59/1461—Unsaturated monoacids
- C08G59/1466—Acrylic or methacrylic acids
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3472—Five-membered rings
- C08K5/3475—Five-membered rings condensed with carbocyclic rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
Definitions
- the present invention relates to a curable composition capable of forming a laminate used as a front plate of an image display device or the like, a cured film obtained by curing the curable composition, and a laminate including the cured film.
- Image display devices such as liquid crystal display devices and organic EL display devices are widely used in various applications such as mobile phones and smart watches.
- a front plate of an image display device a laminate including a cured film obtained by curing a curable composition is used (for example, Patent Document 1).
- an object of the present invention is to provide a curable composition capable of forming a laminate excellent in surface hardness and flexibility, a cured film obtained by curing the curable composition, and a laminate including the cured film. It is to do.
- the present inventors found that at least two selected from the group consisting of trifunctional (meth) acrylate monomers, tetrafunctional (meth) acrylate monomers and octafunctional (meth) acrylate monomers.
- a curable composition containing a polyfunctional (meth) acrylate monomer (A) containing a cationic polymerizable monomer (B), a trifunctional (meth) acrylate monomer, a tetrafunctional (meth) acrylate monomer and an octafunctional
- A polyfunctional (meth) acrylate monomer
- B a cationic polymerizable monomer
- a trifunctional (meth) acrylate monomer a tetrafunctional (meth) acrylate monomer
- an octafunctional The inventors have found that the above problems can be solved when the total mass of the meta) acrylate monomer is a predetermined amount or more, and the present invention has been completed. That is, the present invention
- the content of the polyfunctional (meth) acrylate monomer (A) is 5 to 80 parts by mass, and the content of the cyclic ether compound (B-1) is 5 to 100 parts by mass of the curable composition.
- the curable composition according to [4], which is 80 parts by mass and the content of the vinyloxy compound (B-2) is 3 to 60 parts by mass.
- the content of the vinyloxy compound (B-2) is 3 to 50 parts by mass with respect to 100 parts by mass of the total of the polyfunctional (meth) acrylate monomer (A) and the cationically polymerizable monomer (B).
- the curable composition as described in [4] or [5].
- the cyclic ether compound (B-1) contains a radically polymerizable cyclic ether compound (B-1-2) having one or more radically polymerizable functional groups, according to any one of [2] to [6] Curable composition as described.
- the content of the polyfunctional (meth) acrylate monomer (A) is 5 to 50 parts by mass with respect to 100 parts by mass of the curable composition, and the content of the bis cyclic ether compound (B-1-1)
- the curable composition according to [7], wherein the content is 3 to 30 parts by mass, and the content of the radically polymerizable cyclic ether compound (B-1-2) is 5 to 40 parts by mass.
- the content of the radically polymerizable cyclic ether compound (B-1-2) is 0.1 to 10 parts by mass with respect to 1 part by mass of the bis-cyclic ether compound (B-1-1) [ 7) or the curable composition as described in [8].
- the content of the radical polymerization initiator (C) is 1 to 15 parts by mass with respect to 100 parts by mass of the polyfunctional (meth) acrylate monomer (A), and the content of the cationic polymerization initiator (D)
- the curable composition according to [10] which is 1 to 15 parts by mass with respect to 100 parts by mass of the cationically polymerizable monomer (B).
- the curable composition according to [12], wherein the content of the reactive silica particles is 1 to 70% by mass with respect to the mass of the curable composition when the inorganic particles are reactive silica particles. object.
- [14] A cured film obtained by curing the curable composition according to any one of [1] to [13].
- [15] A laminate in which the cured film according to [14] is laminated on at least one surface of a substrate film.
- [16] The laminate according to [15], wherein the substrate film comprises a polyimide-based polymer.
- [17] The laminate according to [15] or [16], having an oxygen permeability of 800 cc / (m 2 ⁇ 24 h ⁇ atm) or less.
- a flexible display comprising the laminate according to any one of [15] to [17].
- the curable composition of the present invention can form a laminate excellent in surface hardness and flexibility.
- Curable Composition contains a polyfunctional (meth) acrylate monomer (A) and a cationically polymerizable monomer (B).
- the polyfunctional (meth) acrylate monomer (A) means a compound having two or more (meth) acryloyloxy groups in the molecule, and the polyfunctional (meth) acrylate monomer (A) in the present invention is a trifunctional compound. It contains at least two selected from the group consisting of (meth) acrylate monomers, tetrafunctional (meth) acrylate monomers and octafunctional (meth) acrylate monomers.
- the term “(meth) acrylate” means "acrylate” or "methacrylate”
- the term “(meth) acryloyl” also means “acryloyl” or "methacryloyl”.
- the trifunctional (meth) acrylate monomer is a monomer having three (meth) acryloyloxy groups in the molecule, and examples thereof include glycerin tri (meth) acrylate, trimethylolpropane tri (meth) acrylate and ditrimethylol.
- trimethylolpropane from the viewpoint of surface hardness, flexibility, oxygen barrier property, and warpage resistance of a laminate having a cured film obtained by curing a curable composition (sometimes simply referred to as a laminate).
- Tri (meth) acrylate is preferred.
- These trifunctional (meth) acrylate monomers can be used alone or in combination of two or more.
- the surface hardness refers to the hardness of the surface on the cured film side in the laminate of the present invention. Flexibility means the characteristic which can control generating of a crack etc., when making a layered product of the present invention bend.
- the oxygen barrier property means the property of being less likely to transmit oxygen, and the higher the oxygen barrier property, the lower the oxygen permeability or the oxygen permeability.
- the warpage resistance means the characteristic that warpage does not easily occur, and indicates that the higher the warpage resistance, the less the warpage occurs.
- the tetrafunctional (meth) acrylate monomer is a monomer having four (meth) acryloyloxy groups in the molecule, and examples thereof include ditrimethylolpropane tetra (meth) acrylate, pentaerythritol tetra (meth) acrylate and di Examples thereof include pentaerythritol tetra (meth) acrylate, tripentaerythritol tetra (meth) acrylate, caprolactone modified pentaerythritol tetra (meth) acrylate, and caprolactone modified tripentaerythritol tetra (meth) acrylate.
- pentaerythritol tetra (meth) acrylate is preferable from the viewpoints of surface hardness, flexibility, oxygen barrier property, and warpage resistance of the laminate.
- tetrafunctional (meth) acrylate monomers can be used alone or in combination of two or more.
- the octafunctional (meth) acrylate monomer is a monomer having eight (meth) acryloyloxy groups in the molecule, and examples thereof include tripentaerythritol octa (meth) acrylate and caprolactone modified tripentaerythritol octa (meth) An acrylate etc. are mentioned. Among these, tripentaerythritol octa (meth) acrylate is preferable from the viewpoint of surface hardness, flexibility, and oxygen barrier property of the laminate. These octafunctional (meth) acrylate monomers can be used alone or in combination of two or more.
- the curable composition of the present invention comprises at least two selected from the group consisting of trifunctional (meth) acrylate monomers, tetrafunctional (meth) acrylate monomers and octafunctional (meth) acrylate monomers, and is trifunctional (meth) Since the total mass of the acrylate monomer, tetrafunctional (meth) acrylate monomer and octafunctional (meth) acrylate monomer is at least 50 parts by mass with respect to 100 parts by mass of the multifunctional (meth) acrylate monomer (A), the surface hardness And a layered product excellent in flexibility can be formed. Moreover, the curable composition of this invention can also form the laminated body further excellent in oxygen barrier property and curvature resistance.
- the total mass of trifunctional (meth) acrylate monomer, tetrafunctional (meth) acrylate monomer and octafunctional (meth) acrylate monomer in 100 parts by mass of the curable composition of the present invention is preferably 60 parts by mass or more, The amount is preferably 70 parts by mass or more, more preferably 80 parts by mass or more, particularly preferably 90 parts by mass or more, and most preferably 100 parts by mass.
- the surface hardness, the flexibility, the oxygen barrier property, and the warp resistance in the laminate Sex can be further improved.
- the polyfunctional (meth) acrylate monomer in the curable composition of the present invention is composed of a trifunctional (meth) acrylate monomer and a tetrafunctional (meth) acrylate monomer.
- the combination of the trifunctional (meth) acrylate monomer and the tetrafunctional (meth) acrylate monomer is often advantageous in terms of surface hardness, flexibility, oxygen barrier properties, and warpage resistance.
- the content of the tetrafunctional (meth) acrylate monomer is preferably 0.5 to 5 parts by mass, more preferably 1 to 3 parts by mass with respect to 1 part by mass of the trifunctional (meth) acrylate monomer.
- the content of the tetrafunctional (meth) acrylate monomer is in the above range, the surface hardness, the flexibility, the oxygen barrier property, and the warpage resistance of the laminate can be easily improved.
- the multifunctional (meth) acrylate monomer (A) can include trifunctional (meth) acrylate monomers, tetrafunctional (meth) acrylate monomers and other (meth) acrylate monomers other than octafunctional (meth) acrylate monomers.
- Types of other (meth) acrylate monomers are not particularly limited, and examples thereof include bifunctional (meth) acrylate monomers, pentafunctional (meth) acrylate monomers, hexafunctional (meth) acrylate monomers, and heptafunctional (meth) acrylates. Monomers and the like can be mentioned.
- difunctional (meth) acrylate monomers include ethylene glycol di (meth) acrylate, 1,3-butanediol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di Alkylene glycol di (meth) acrylates such as (meth) acrylate, 1,9-nonanediol di (meth) acrylate and neopentyl glycol di (meth) acrylate; diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate , Dipropylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate and polytetrame Polyoxyalkylene glycol di (meth) acrylates such as glycol di (meth) acrylate,
- pentafunctional (meth) acrylate monomer examples include dipentaerythritol penta (meth) acrylate, tripentaerythritol penta (meth) acrylate, a reaction product of dipentaerythritol penta (meth) acrylate and an acid anhydride, and caprolactone modified dipenta Examples thereof include erythritol penta (meth) acrylate, caprolactone-modified tripentaerythritol penta (meth) acrylate, and a reaction product of caprolactone-modified dipentaerythritol penta (meth) acrylate and an acid anhydride. These pentafunctional (meth) acrylate monomers can be used alone or in combination of two or more.
- hexafunctional (meth) acrylate monomer examples include dipentaerythritol hexa (meth) acrylate, tripentaerythritol hexa (meth) acrylate, caprolactone modified dipentaerythritol hexa (meth) acrylate, and caprolactone modified tripentaerythritol hexa (meth) acrylate Etc.
- These hexafunctional (meth) acrylate monomers can be used alone or in combination of two or more.
- a heptafunctional (meth) acrylate monomer for example, tripentaerythritol hepta (meth) acrylate, reaction product of tripentaerythritol hepta (meth) acrylate and acid anhydride, caprolactone modified tripentaerythritol hepta (meth) acrylate, caprolactone modified The reaction product of tripentaerythritol hepta (meth) acrylate and an acid anhydride etc. are mentioned.
- These 7 functional (meth) acrylate monomers can be used individually or in combination of 2 or more types.
- the curable composition of the present invention contains a cationically polymerizable monomer (B).
- the cationically polymerizable monomer (B) means a compound having a cationically polymerizable group in the molecule.
- the cationically polymerizable monomer (B) is a cyclic ether compound (B) having one or more epoxy groups and / or one or more oxetanyl groups from the viewpoints of surface hardness, flexibility, oxygen barrier property, and warpage resistance of the laminate. It is preferable to include at least one selected from -1) and vinyloxy compound (B-2).
- Cyclic ether compound (B-1) As the cyclic ether compound (B-1), for example, an epoxy compound having one or more epoxy groups in the molecule [referred to as an epoxy compound (b)], an oxetane compound having one or more oxetanyl groups in the molecule [oxetane compound b)], radically polymerizable cyclic ether compounds (B-1-2) having one or more radically polymerizable functional groups, and the like.
- the epoxy compound (b), the oxetane compound (b), and the radically polymerizable cyclic ether compound (B-1-2) can be used alone or in combination of two or more.
- the epoxy group in the epoxy compound (b) is preferably a group which is unsubstituted or modified with a hydrocarbon group having 6 or less carbon atoms, preferably 3 or less carbon atoms, more preferably unsubstituted.
- an epoxy compound (b) an aliphatic epoxy compound (b1), an alicyclic epoxy compound (b2), and an aromatic epoxy compound (b3) are preferably used. These epoxy compounds (b) can be used alone or in combination of two or more.
- the aliphatic epoxy compound (b1) is a compound having in the molecule at least one, preferably at least two, epoxy groups bonded to aliphatic carbon atoms.
- aliphatic epoxy compounds (b1) include bifunctional epoxy such as 1,4-butanediol diglycidyl ether, 1,6-hexanediol diglycidyl ether, cyclohexane dimethanol diglycidyl ether, neopentyl glycol diglycidyl ether, etc.
- Examples of the compound include trifunctional or higher functional epoxy compounds such as trimethylolpropane triglycidyl ether and pentaerythritol tetraglycidyl ether.
- bifunctional compounds having two epoxy groups bonded to aliphatic carbon atoms such as 1,4-butanediol diglycidyl ether, 1,6-hexanediol diglycidyl ether, neopentyl glycol diglycidyl ether, etc. in the molecule
- Epoxy compounds aliphatic diepoxy compounds
- these aliphatic epoxy compounds (b1) can be used individually or in combination of 2 or more types.
- the alicyclic epoxy compound (b2) is a compound having in the molecule at least one epoxy group bonded to an alicyclic ring, preferably a compound having two or more epoxy groups in the molecule, more preferably an epoxy group in the molecule A compound having two (alicyclic diepoxy compound (b2)).
- the “epoxy group bonded to an alicyclic ring” is represented by the formula (a): It means the bridging oxygen atom -O- in the structure represented by In the formula (a), m is an integer of 2 to 5.
- a compound in which two or more groups in a form in which one or more hydrogen atoms in (CH 2 ) m in formula (a) are removed is bonded to another chemical structure is a cycloaliphatic epoxy compound (b 2) It can be One or more hydrogen atoms in (CH 2 ) m may be optionally substituted by a linear alkyl group such as a methyl group or an ethyl group.
- Examples of the alicyclic epoxy compound (b2) include 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate, 3,4-epoxy-6-methylcyclohexylmethyl 3,4-epoxy-6-methylcyclohexane Carboxylate, ethylenebis (3,4-epoxycyclohexanecarboxylate), bis (3,4-epoxycyclohexylmethyl) adipate, bis (3,4-epoxy-6-methylcyclohexylmethyl) adipate, diethylene glycol bis (3,4 -Epoxycyclohexyl methyl ether), ethylene glycol bis (3,4- epoxycyclohexyl methyl ether) and the like.
- 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexane carboxylate is more preferable from the viewpoints of surface hardness, flexibility, oxygen barrier property, and warp resistance of the laminate.
- an alicyclic epoxy compound (b2) can be used individually or in combination of 2 or more types.
- aromatic epoxy compound (b3) examples include monohydric phenols having at least one aromatic ring such as phenol, cresol and butylphenol or mono / polyglycidyl etherified products of alkylene oxide adducts thereof, for example, bisphenol A, bisphenol F Or a glycidyl ether compound of a compound obtained by further adding an alkylene oxide thereto, an epoxy novolac resin; a glycidyl ether of an aromatic compound having two or more phenolic hydroxyl groups such as resorcinol, hydroquinone and catechol; benzenedimethanol, benzenediethanol, benzene Mono / polyglycidyl ether of an aromatic compound having two or more alcoholic hydroxyl groups such as dibutanol; two or more cals such as phthalic acid, terephthalic acid and trimellitic acid Glycidyl esters of polybasic acid aromatic compound having a phosphate; benzoic acid and toluic acid, glycer
- the alicyclic epoxy compound (b1) is preferable, and when the alicyclic epoxy compound (b1) is contained, the surface hardness, flexibility, oxygen barrier property, and warpage resistance point of the laminate are obtained. Is advantageous.
- the oxetanyl group in the oxetane compound (b) is preferably a group which is unsubstituted or modified with a hydrocarbon group having 6 or less carbon atoms, preferably 1 to 3 carbon atoms, and is preferably modified with a hydrocarbon group having 1 to 3 carbon atoms It is more preferable that it is a substituted group.
- oxetane compounds (b) include 3-ethyl-3-hydroxymethyl oxetane (sometimes referred to as oxetane alcohol), 2-ethylhexyl oxetane, 1,4-bis [ ⁇ (3-ethyl oxetan-3-yl) [Methoxy] methyl] benzene (sometimes referred to as xylylene bis oxetane), 3-ethyl-3- (phenoxymethyl) oxetane, monofunctional oxetane compound of 3- (cyclohexyloxy) methyl-3-ethyl oxetane; 3-ethyl- A mixture of 3 [ ⁇ (3-ethyloxetan-3-yl) methoxy ⁇ methyl] oxetane, xylylene bis oxetane, xylylene bis oxetane (eg, xylylene bis o
- Bifunctional oxetane compounds etc. And the like.
- bifunctional oxetane compounds are preferable from the viewpoints of surface hardness, flexibility, oxygen permeability and warp resistance, and 3-ethyl-3 [ ⁇ ((3-ethyl oxetane-3-) More preferred is a mixture of Ill) methoxy ⁇ methyl] oxetane, xylylene bis oxetane, or xylylene bis oxetane.
- These oxetane compounds (b) can be used alone or in combination of two or more.
- the radically polymerizable cyclic ether compound (B-1-2) has one or more radically polymerizable functional groups in the molecule.
- a radically polymerizable functional group a vinyl group, a (meth) acryloyl group, etc. are mentioned, for example, Preferably it is a (meth) acryloyl group, More preferably, it is a methacryloyl group.
- the radically polymerizable cyclic ether compound may be an epoxy compound having a radically polymerizable functional group, an oxetane compound having a radically polymerizable functional group, or the like, and is preferably an epoxy compound having a radically polymerizable functional group.
- the epoxy compound having a radically polymerizable functional group may be any one of alicyclic, aliphatic and aromatic, but alicyclic is particularly preferable. Since the radically polymerizable cyclic ether compound (B-1-2) has a radically polymerizable group and a cationically polymerizable group (eg, an epoxy group, an oxetanyl group, etc.), it can cause both radical polymerization and cationic polymerization.
- a radically polymerizable cyclic ether compound (B-1-2) has a radically polymerizable group and a cationically polymerizable group (eg, an epoxy group, an oxetanyl group, etc.), it can cause both radical polymerization and cationic polymerization.
- the radically polymerizable cyclic ether compound (B-1-2) include epoxy compounds having a vinyl group such as 1,2-epoxy-4-vinylcyclohexane; 3,4-epoxycyclohexylmethyl (meth) acrylate, Epoxy compounds having a (meth) acryloyl group such as glycidyl (meth) acrylate; oxetane compounds having a (meth) acryloyl group such as (meth) acrylic acid (3-ethyl-3-oxetanyl) methyl and the like.
- These radically polymerizable cyclic ether compounds can be used alone or in combination of two or more.
- the cyclic ether compound (B-1) is a bis cyclic ether compound having two or more epoxy groups and / or two or more oxetanyl groups from the viewpoint of surface hardness, flexibility, oxygen barrier property, and warpage resistance of a laminate. It is preferable to include (B-1-1).
- the cyclic ether compound (B-1) preferably contains a radically polymerizable cyclic ether compound (B-1-2).
- a radically polymerizable cyclic ether compound (B-1-2) By including the radically polymerizable cyclic ether compound (B-1-2), the surface hardness, the flexibility, the oxygen barrier property, and the warpage resistance of the laminate can be further improved.
- the content of the radically polymerizable cyclic ether compound (B-1-2) is And 0.1 to 10 parts by mass, more preferably 0.15 to 7 parts by mass, and still more preferably 0.2 to 5 parts by mass with respect to 1 part by mass of the bis-cyclic ether compound (B-1-1). It is.
- the content of the radically polymerizable cyclic ether compound (B-1-2) is preferably 1 to 10 parts by mass with respect to 1 part by mass of the bis-cyclic ether compound (B-1-1), More preferably, it may be 1.5 to 7 parts by mass, and more preferably 2 to 5 parts by mass.
- the content of the radically polymerizable cyclic ether compound (B-1-2) is within the above range, a laminate excellent in surface hardness, flexibility, oxygen barrier property, and warpage resistance can be formed.
- the vinyloxy compound (B-2) means a compound having one or more vinyloxy groups in the molecule.
- the vinyloxy compound (B-2) is preferably a compound having two or more vinyloxy groups.
- These vinyloxy compounds (B-2) can be used alone or in combination of two or more.
- the vinyloxy compound (B-2) may be a monomer or an oligomer, but is preferably a monomer.
- vinyloxy compound (B-2) for example, aliphatic vinyl ether compounds such as 2-ethylhexyl vinyl ether, dodecyl vinyl ether, 4-hydroxybutyl vinyl ether, diethylene glycol monovinyl ether, triethylene glycol divinyl ether, divinyl adipate and the like; cyclohexyl vinyl ether, cyclohexane Alicyclic vinyl ether compounds such as dimethanol divinyl ether; and aromatic vinyl ether compounds such as phenyl vinyl ether and benzene dimethanol divinyl ether.
- These vinyloxy compounds (B-2) can be used alone or in combination of two or more.
- alicyclic vinyl ether compounds are preferable from the viewpoints of surface hardness, flexibility, oxygen barrier properties, and warpage resistance of the laminate.
- the cationically polymerizable monomer (B) contains a vinyloxy compound (B-2), in view of the surface hardness, flexibility, oxygen barrier property, and warpage resistance of the obtained laminate. It is advantageous from When the curable composition of the present invention contains a vinyloxy compound (B-2), the content of the vinyloxy compound (B-2) is the same as the polyfunctional (meth) acrylate monomer (A) and the cationically polymerizable monomer (B) The amount is preferably 3 to 50 parts by mass, more preferably 10 to 40 parts by mass, and still more preferably 15 to 35 parts by mass with respect to a total amount of 100 parts by mass of When the content of the vinyloxy compound (B-2) is in the above range, the surface hardness, the flexibility, the oxygen barrier property, and the warpage resistance of the laminate can be further improved.
- the content of the vinyloxy compound (B-2) is preferably 0.1 to 3 parts by mass, more preferably 1 part by mass of the cyclic ether compound (B-1). Is 0.5 to 2 parts by mass, more preferably 0.5 to 1.5 parts by mass.
- the content of the vinyloxy compound (B-2) is in the above range, the surface hardness, the flexibility, the oxygen barrier property, and the warpage resistance of the laminate can be further improved.
- the content of the cationically polymerizable monomer (B) is preferably 0.1 to 5 parts by mass, more preferably 0.5 to 3 parts by mass, with respect to 1 part by mass of the polyfunctional (meth) acrylate monomer (A).
- the amount is more preferably 0.5 to 1.5 parts by mass, particularly preferably 0.8 to 1.2 parts by mass.
- the content of the polyfunctional (meth) acrylate monomer (A) is preferably 5 to 80 parts by mass, more preferably 10 to 60 parts by mass with respect to 100 parts by mass of the curable composition.
- the amount of the cyclic ether compound (B-1) is preferably 5 to 80 parts by mass, more preferably 7 to 60 parts by mass, more preferably 20 to 50 parts by mass, and particularly preferably 25 to 40 parts by mass.
- Part, more preferably 10 to 50 parts by mass, particularly preferably 20 to 40 parts by mass, and the content of the vinyl compound (B-2) is preferably 3 to 60 parts by mass, more preferably 5 to 40 parts by mass And more preferably 10 to 30 parts by mass.
- the content of the polyfunctional (meth) acrylate monomer (A), the cyclic ether compound (B-1) and the vinyl compound (B-2) is in the above range, the surface hardness, the flexibility, the oxygen barrier property, and the resistance It is easy to form a laminate excellent in warpage.
- the content of the polyfunctional (meth) acrylate monomer (A) is preferably 5 to 50 parts by mass, more preferably 10 to 45 parts by mass with respect to 100 parts by mass of the curable composition.
- Part, more preferably 20 to 40 parts by mass, and the content of the bis-cyclic ether compound (B-1-1) is preferably 3 to 30 parts by mass, more preferably 5 to 25 parts by mass, and radical polymerization
- the content of the cyclic ether compound (B-1-2) is preferably 5 to 40 parts by mass, more preferably 10 to 35 parts by mass.
- the content of the polyfunctional (meth) acrylate monomer (A) is preferably 5 to 50 parts by mass, more preferably 10 to 45 parts by mass with respect to 100 parts by mass of the curable composition.
- the amount is preferably 20 to 40 parts by mass
- the content of the bis-cyclic ether compound (B-1-1) is preferably 3 to 20 parts by mass, and more preferably 5 to 15 parts by mass.
- the content of the polymerizable cyclic ether compound (B-1-2) is preferably 15 to 40 parts by mass, and more preferably 20 to 35 parts by mass.
- the content of the polyfunctional (meth) acrylate monomer (A), the bis cyclic ether compound (B-1-1), and the radically polymerizable cyclic ether compound (B-1-2) is in the above range, the surface hardness, It is easy to form a laminate excellent in flexibility, oxygen barrier property, and warpage resistance.
- the curable composition of the present invention may contain a radical polymerization initiator (C) and a cationic polymerization initiator (D). It is preferable to include a photo radical polymerization initiator (C) and a photo cationic polymerization initiator (D) from the viewpoint of easy curing quickly.
- the photoradical polymerization initiator is contained in the curable composition, the polyfunctional (meth) acrylate monomer (A) which is a radically polymerizable compound can be rapidly cured.
- the photo radical polymerization initiator is not particularly limited as long as it can start curing of the radically polymerizable compound by irradiation of active energy rays such as visible light, ultraviolet rays, X-rays and electron beams, and specific examples thereof are Acetophenone, 3-methylacetophenone, benzyldimethyl ketal, 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropan-1-one, 2-methyl-1- [4- (methylthio) phenyl] -2 Acetophenone-based initiators such as -morpholinopropan-1-one and 2-hydroxy-2-methyl-1-phenylpropan-1-one; benzophenone-based initiators such as benzophenone, 4-chlorobenzophenone and 4,4'-diaminobenzophenone Agents; 2,2-dimethoxy-1,2-diphenylethane-1-one, 1-hydro Alkylphenone-based initiators such as sheath cyclohexyl-
- the cationically polymerizable monomer (B) which is a cationically polymerizable compound can be hardened
- the photo cationic polymerization initiator is not particularly limited as long as it generates a cationic species or a Lewis acid upon irradiation with active energy rays and can initiate curing of the cationically polymerizable monomer.
- aromatic diazonium Salts such as benzenediazonium hexafluoroantimonate, benzenediazonium hexafluorophosphate, benzenediazonium hexafluoroborate
- aromatic iodonium salts such as diphenyliodonium tetrakis (pentafluorophenyl) borate, (4-methylphenyl) [4- ( 2-Methylpropyl) phenyl] iodonium hexafluorophosphate, diphenyliodonium hexafluorophosphate, diphenyliodonium hexafluoroantimonate, bis 4-nonylphenyl) iodonium hexafluorophosphate
- aromatic sulfonium salt for example, triphenylsulfonium hexafluorophosphate, triphenylsulfonium hexafluoroantimonate, triphenyls
- photo cationic polymerization initiators can be used alone or in combination of two or more.
- aromatic iodonium salts and aromatic sulfonium salts are preferable.
- the radically polymerizable cyclic ether compound (B-1-2) has a radically polymerizable group and a cationically polymerizable group (for example, an epoxy group, an oxetanyl group, etc.), both radical polymerization and cationic polymerization can occur. . Therefore, when the photo radical polymerization initiator and the photo cationic polymerization initiator are used in combination, it is easy to cure more rapidly.
- the curable composition of the present invention contains a polyfunctional (meth) acrylate monomer which is a radically polymerizable compound and a cationically polymerizable monomer which is a cationically polymerizable compound, the photocationic polymerization initiator and the radical in the curable composition It is preferable to include a polymerization initiator, and by using a photocationic polymerization initiator and a photoradical polymerization initiator in combination, a laminate having more excellent surface hardness, flexibility, oxygen barrier properties, and warpage resistance is formed. can do.
- the content of the radical polymerization initiator (C) is preferably 1 to 15 parts by mass with respect to 100 parts by mass of the polyfunctional (meth) acrylate monomer (A), More preferably, it is 3 to 12 parts by mass.
- the content of the cationic polymerization initiator (D) is preferably 1 to 15 parts by mass, more preferably 3 to 10 parts by mass, with respect to 100 parts by mass of the cationically polymerizable monomer (B).
- the curable composition of the present invention may further contain inorganic particles from the viewpoint of increasing the surface hardness of the laminate.
- inorganic particles for example, silica particles, reactive silica particles, alumina particles, reactive alumina particles, talc particles, clay particles, calcium carbonate particles, magnesium carbonate particles, barium sulfate particles, aluminum hydroxide particles, titanium dioxide particles, Zirconium oxide particles and the like can be mentioned.
- the inorganic particles can be used alone or in combination of two or more.
- the curable composition of the present invention further comprises reactive silica particles.
- a crosslinked structure can be formed with a reactive group or a compound having a reactive site contained in the curable composition, and in particular, a film excellent in oxygen barrier properties can be obtained.
- a reactive group an acryloyl group, a hydroxyl group, an alkoxy group (for example, methyl group, an ethyl group etc.), a carboxyl group, a thiol group, an amino group, a nitro group, an acyl group, an epoxy group etc. are mentioned, for example.
- the inorganic particles can be used alone or in combination of two or more.
- the particle diameter of the reactive silica particles is preferably 1 to 100 nm, more preferably 3 to 50 nm, and still more preferably 5 to 30 nm, from the viewpoint of oxygen barrier properties of the laminate, transparency, and aggregation suppression of the particles.
- the particle size can be measured as an average primary particle size using a conventional method such as laser diffraction.
- the content of the reactive silica particles is preferably 1 to 70 parts by mass with respect to 100 parts by mass of the curable composition from the viewpoint of oxygen barrier property and flexibility. More preferably, it is 5 to 65 parts by mass, more preferably 5 to 60 parts by mass, still more preferably 10 to 50 parts by mass, and particularly preferably 15 to 45 parts by mass.
- the curable composition of the present invention can further contain a UV absorber.
- Organic UV absorbers and fine powder based UV blockers can be mentioned.
- the organic ultraviolet absorber for example, benzotriazole-based, triazine-based, acrylonitrile-based, benzophenone-based, aminobutadiene-based, salicylate-based, and the like can be used.
- benzotriazole-based or triazine-based UV absorbers are preferable from the viewpoint of exhibiting high UV blocking ability even when used in an image display device because of their high UV absorbability.
- ultraviolet absorbers having different maximum absorption wavelengths may be used alone or in combination of two or more.
- benzotriazole examples include, for example, 2,2-methylenebis [4- (1,1,3,3-tetramethylbutyl) -6 [(2H-benzotriazol-2-yl) phenol]], 2- (2H- Benzotriazol-2-yl) -4- (1,1,3,3-tetramethylbutyl) phenol, 2- [5-chloro (2H) -benzotriazol-2-yl] -4-methyl-6- ( tert-butyl) phenol and the like can be mentioned.
- triazines examples include 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-[(hexyl) oxy] -phenol and the like.
- Typical commercial products of triazine organic UV absorbers include TINUVIN 400, TINUVIN 405, TINUVIN 460, TINUVIN 477, TINUVIN 479, manufactured by BASF, Adekastab LA-46, Adekastab LA-F70, etc. .
- HALS agents may also be used, such as bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, poly [[6- (1,1,3,3-tetramethylbutyl) amino- 1,3,5-Triazine-2,4-diyl] [(2,2,6,6-tetramethyl-4-piperidyl) imino] hexamethylene [(2,2,6,6-tetramethyl-4-) [Piperidyl) imino]], dibutylamine, 1,3,5-triazine, N, N-bis (2,2,6,6-tetramethyl-4-piperidyl-1,6-hexamethylenediamine, N- (2 Polycondensates of 2,2,6,6-tetramethyl-4-piperidyl) butylamine and the like can be mentioned.
- Typical commercial products of HALS agents include TINUVIN 111, TINUVIN 123, TINUVIN 123, TINUVIN 144, TINUVIN 292, TINUVIN 5100, Adekastab LA-52, Adekastab LA-57, Adekastab LA-63P, Adekastab LA, manufactured by BASF. And Adekastab LA-72, Adekastab LA-77, Adekastab LA-81, Adekastab LA-82, Adekastab LA-87, Adekastab LA-402, Adekastab LA-502 and the like.
- the fine powder ultraviolet ray blocking agent is preferably a fine particle metal oxide, and more preferably a fine particle metal oxide having an average primary particle diameter in the range of 1 to 100 nm and having an ultraviolet ray protective effect.
- the metal oxide include titanium oxide, zinc oxide, cerium oxide, iron oxide and magnesium oxide. One or more, preferably two or more of these particulate metal oxides may be combined.
- the shape of the particulate metal oxide is not particularly limited to spherical, needle, rod, spindle, irregular shape, plate or the like, and the crystal form is also not particularly limited to amorphous, rutile, anatase or the like.
- Particulate metal oxides are conventionally known surface treatments such as fluorine compound treatment, silicone treatment, silicone resin treatment, pendant treatment, silane coupling agent treatment, titanium coupling agent treatment, oil agent treatment, N-acylated lysine treatment, poly It is preferable that the surface treatment is carried out in advance by acrylic acid treatment, metal soap treatment, amino acid treatment, inorganic compound treatment, plasma treatment, mechanochemical treatment, etc.
- silicone, silane, fluorine compound, amino acid compound, metal soap is selected. It is preferable to be water repellent treated with one or more surface treatment agents.
- HMZD-50 manufactured by Sumitomo Osaka Cement Co., Ltd. and the like can be mentioned.
- the content of the ultraviolet light absorber can be appropriately selected according to the ultraviolet light transmittance and the absorbance of the ultraviolet light absorber.
- the polyfunctional (meth) acrylate monomer (A) and the cation The amount is preferably 1 to 10 parts by mass, more preferably 2 to 8 parts by mass, based on 100 parts by mass of the total of the polymerizable monomers (B).
- the ultraviolet absorptivity of a layered product obtained can be expressed effectively as content of an ultraviolet absorber is more than the above-mentioned lower limit, and a fall of hardenability of a hardenability constituent can be controlled as it is below the above-mentioned upper limit.
- the curable composition of the present invention can further include a leveling agent.
- the leveling agent has the function of adjusting the flowability of the curable composition and making the cured film obtained by applying the curable composition flatter, and examples thereof include silicones such as polydimethylsiloxane and the like. And surfactants of polyacrylate type and perfluoroalkyl type.
- the content of the leveling agent is preferably 0.01 to 5 parts by mass, more preferably 0.05 to 3 parts by mass with respect to 100 parts by mass of the curable composition.
- the curable composition may contain an antistatic agent.
- an antistatic agent metal oxides and metal salts are preferred.
- the metal oxide include ITO (indium-tin complex oxide), ATO (antimony-tin complex oxide), tin oxide, antimony pentoxide, zinc oxide, zirconium oxide, titanium oxide, aluminum oxide and the like.
- the metal salt include zinc antimonate and the like.
- the content of the antistatic agent depends on the required antistatic performance, but the total amount 100 mass of the polyfunctional (meth) acrylate monomer (A) and the cationically polymerizable monomer (B)
- the amount is preferably 0.1 to 20 parts by mass, more preferably 1 to 10 parts by mass with respect to parts.
- the curable composition of the present invention can further contain other additives as long as the surface hardness and flexibility are not impaired.
- Other additives include, for example, antioxidants, mold release agents, stabilizers, bluing agents, flame retardants, pH adjusters, lubricants and thickeners. These other additives can be used alone or in combination of two or more.
- the content of the other additives is preferably 0.01 to 20 parts by mass, more preferably 0.1 to 20 parts by mass with respect to 100 parts by mass of the curable composition. It is 10 parts by mass.
- the curable composition of the present invention is preferably a curable composition for the hard coat layer of the front plate of the image display device.
- the curable composition of the present invention comprises the components contained in the composition, the polyfunctional (meth) acrylate monomer (A), the cationically polymerizable monomer (B), and optionally, a radical polymerization initiator, a cationic polymerization initiator, an inorganic substance Particles, UV absorbers, and other additives may be obtained by conventional methods such as mixing, and the order of mixing is not particularly limited.
- Cured Film, Laminate, and Method for Producing the Same (1) Cured Film, Laminate The present invention includes a cured film obtained by curing the curable composition.
- the cured film is a cured product of the curable composition.
- the cured film of the present invention is excellent in surface hardness and flexibility because it is made of the curable composition of the present invention. Furthermore, the cured film of the present invention also has excellent oxygen barrier properties and warpage resistance.
- the present invention also encompasses a laminate in which the cured film of the present invention is laminated on at least one surface of a substrate film.
- the polymer contained in the substrate film preferably has transparency, and examples thereof include polyester-based polymers such as polyethylene terephthalate, polycarbonate-based polymers, and polyarylate-based polymers. Examples thereof include polymers, polyethersulfone-based polymers, polyimide-based polymers, and polyamide-based polymers. Among these, polyimide polymers are preferable because they are excellent in heat resistance, flexible characteristics and rigidity.
- a laminate having a substrate film comprising a polyimide-based polymer is useful as a front plate of an image display device, particularly as a front plate (window film) of a flexible display.
- the substrate film may be a single layer or multiple layers. When the substrate film is a multilayer, each layer may be composed of the same or different composition.
- the polyimide-based polymer refers to a polymer containing a polyimide and a repeating structural unit containing both an imide group and an amide group.
- the polyimide is a polymer containing a repeating structural unit containing an imide group.
- the polyimide-based polymer can be produced, for example, using a tetracarboxylic acid compound and a diamine compound as main raw materials.
- the polyimide-based polymer has a repeating structural unit represented by Formula (10).
- G is a tetravalent organic group
- A is a divalent organic group.
- the polyimide-based polymer may include two or more types of structures represented by Formula (10) in which G and / or A are different.
- the polyimide polymer includes one or more selected from the group consisting of the structures represented by Formula (11), Formula (12) and Formula (13), as long as various physical properties of the base film are not impaired. It may be.
- the case where the polyimide-based polymer includes the structure represented by the formula (13) is preferable because it tends to develop a good surface hardness.
- the polyimide-type polymer containing the repeating structural unit represented by Formula (10), and the repeating structural unit represented by Formula (13) is called a polyamide imide.
- G and G 1 each independently represent a tetravalent organic group, preferably an organic group which may be substituted with a hydrocarbon group or a fluorine-substituted hydrocarbon group.
- Examples of G and G 1 include groups represented by formulas (20) to (29), and a tetravalent chain hydrocarbon group having 6 or less carbon atoms.
- Z is a single bond, -O -, - CH 2 - , - CH 2 -CH 2 -, - CH (CH 3) -, - C (CH 3) 2 -, - C (CF 3) 2 -, - Ar -, - SO 2 -, - CO -, - O-Ar-O -, - Ar-CH 2 -Ar -, - Ar-C (CH 3) 2 -Ar- or -Ar-SO 2 -Ar-
- Ar represents an arylene group having 6 to 20 carbon atoms which may be substituted by a fluorine atom, and specific examples include a phenylene group.
- G 2 is a trivalent organic group, preferably an organic group which may be substituted with a hydrocarbon group or a fluorine-substituted hydrocarbon group.
- G 2 a group in which any one of the bond of the groups represented by the formulas (20) to (29) is replaced with a hydrogen atom, and a trivalent chain hydrocarbon group having 6 or less carbon atoms are exemplified. Be done.
- G 3 are a divalent organic group, preferably a hydrocarbon group or fluorine-substituted hydrocarbon organic group which may be substituted with a group.
- Examples of G 3 include groups in which two nonadjacent ones of the bonds of the groups represented by formulas (20) to (29) are replaced with a hydrogen atom, and a chain hydrocarbon group having 6 or less carbon atoms Ru.
- a phenylene group is mentioned as a specific example.
- A, A 1 , A 2 and A 3 are each independently a divalent organic group, preferably a hydrocarbon group or an organic group which may be substituted with a fluorine-substituted hydrocarbon group.
- Z 1, Z 2 and Z 3 are each independently a single bond, -O -, - CH 2 - , - CH 2 -CH 2 -, - CH (CH 3) -, - C (CH 3) 2 -, - C (CF 3) 2 -, - representing the or -CO- - SO 2.
- Z 1 and Z 3 are -O-
- Z 2 is -CH 2- , -C (CH 3 ) 2- , -C (CF 3 ) 2 -or -SO 2- is there.
- the bonding position of each of Z 1 and Z 2 to each ring and the bonding position of each of Z 2 and Z 3 to each ring are preferably meta or para to each ring.
- the base film may use the polyimide-based polymer and the polyamide-based polymer in combination.
- the polyamide-based polymer is a polymer containing a repeating structural unit containing an amide group.
- the polyamide-based polymer according to the present embodiment is a polymer mainly composed of the repeating structural unit represented by the formula (13). Preferred examples and specific examples are the same as G 3 and A 3 in the polyimide-based polymer. G 3, and / or A 3 are different, may include a structure represented by two or more of formula (13).
- the polyimide-based polymer contained in the base film may contain plural types of G 3 , and the plural types of G 3 may be the same as or different from each other.
- G 3 is represented by the formula (3) [In Formula (3), R 1 to R 8 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms, and a hydrogen contained in R 1 to R 8
- the atoms may be each independently substituted with a halogen atom
- B represents a single bond, -O -, - CH 2 - , - CH 2 -CH 2 -, - CH (CH 3) -, - C (CH 3) 2 -, - C (CF 3) 2 -, - SO 2 -, - S -, - CO
- B is independently a single bond, -O -, - CH 2 - , - CH 2 -CH 2 -, - CH (CH 3) -, - C (CH 3) 2 -, -C (CF 3) 2 -, - SO 2 -, - S -, - CO- or -NR 9 - represents, in terms of flexibility improvement of the laminate, preferably represents -O- or -S- And more preferably -O-.
- R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 12 carbon atoms Represent.
- the alkyl group having 1 to 6 carbon atoms for example, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, n-pentyl group, 2-methyl- Examples include butyl, 3-methylbutyl, 2-ethyl-propyl and n-hexyl groups.
- R 1 to R 8 each independently preferably represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and more preferably a hydrogen atom or 1 to 3 carbon atoms from the viewpoint of surface hardness and flexibility of the laminate. Is an alkyl group, more preferably a hydrogen atom.
- the hydrogen atoms contained in R 1 to R 8 may be each independently substituted with a halogen atom.
- R 9 represents a hydrogen atom or a hydrocarbon group having 1 to 12 carbon atoms which may be substituted by a halogen atom.
- n is an integer in the range of 0 to 4, and when n is in this range, the flexibility and elastic modulus of the laminate are good.
- n is preferably an integer in the range of 0 to 3, more preferably an integer in the range of 0 to 2, further preferably 0 or 1, and n is in this range.
- the flexibility and elastic modulus of the laminate are good, the availability of raw materials is relatively good.
- G 3 is the perspective of may contain a structural unit represented by the formula (3) one or two or more, improvement in the elastic modulus and flexibility of the laminate, and a yellow index (YI value) decreased
- a structural unit represented by the formula (3) one or two or more, improvement in the elastic modulus and flexibility of the laminate, and a yellow index (YI value) decreased
- two or more types of structural units having different values of n preferably two types of structural units having different values of n, may be included.
- n contains both a structural unit of 0 and 1 from the viewpoint that a layered product is easy to express high elastic modulus, flexibility, and low yellowness degree (YI value).
- formula (3) is a compound of formula (3 ′): And at least a part of the plurality of G 3 is a structural unit represented by the formula (3 ′).
- the laminate can have high flexibility while exhibiting high surface hardness, and can reduce yellowness.
- the composition represented by the formula (3) with respect to the sum of the constituent units represented by the formula (10) of the polyimide polymer and the constituent units represented by the formula (13) The unit is preferably 20 mol% or more, more preferably 30 mol% or more, still more preferably 40 mol% or more, particularly preferably 50 mol% or more, most preferably 60 mol% or more, preferably 90 mol% or less More preferably, it is 85 mol% or less, still more preferably 80 mol% or less.
- the structural unit represented by Formula (3) is more than the above lower limit with respect to the total of the structural unit represented by Formula (10) and the structural unit represented by Formula (13) in the polyimide-based polymer And while a laminated body can express high surface hardness, it can be excellent in flexibility or an elastic modulus.
- the structural unit represented by Formula (3) is below the said upper limit with respect to the sum total of the structural unit represented by Formula (10) in polyimide type polymer, and the structural unit represented by Formula (13) And the viscosity of a resin varnish can be suppressed by suppressing the thickening by the hydrogen bond between the amide bond derived from Formula (3), and processing of a base film can be made easy.
- n in the formula (3) is the total of the constitutional unit represented by the formula (10) of the polyimide polymer and the constitutional unit represented by the formula (13)
- the constituent unit represented by 1 to 4 is preferably 3 mol% or more, more preferably 5 mol% or more, still more preferably 7 mol% or more, particularly preferably 9 mol% or more, preferably 90 mol% or less More preferably, it is 70 mol% or less, still more preferably 50 mol% or less, and particularly preferably 30 mol% or less.
- the structural unit in which n in the formula (3) is represented by 1 to 4 is the total of the structural unit represented by the formula (10) and the structural unit represented by the formula (13) in the polyimide polymer
- a layered product can express high surface hardness as it is more than the above-mentioned minimum, and flexibility is further improved.
- the structural unit in which n in the formula (3) is represented by 1 to 4 is the total of the structural unit represented by the formula (10) and the structural unit represented by the formula (13) in the polyimide polymer
- the viscosity of the resin varnish can be suppressed by suppressing the thickening due to the hydrogen bond between the amide bonds derived from the formula (3) to be the above upper limit or less, and the processing of the base film can be facilitated. it can.
- the content of the constituent unit represented by the formula (3) can be measured, for example, using 1 H-NMR, or can be calculated from the feed ratio of the raw materials.
- the G 3 of the polyimide in the polymer preferably 5 mol% or more, more preferably 8 mol% or more, more preferably 10 mol% or more, particularly preferably 12 mol% or more Is expressed by the equation (3) when n is 1 to 4.
- the laminate exhibits high surface hardness and at the same time has high flexibility. it can.
- the G 3 of polyimide in the polymer preferably 90 mol% or less, 70 mole% and more preferably less, more preferably 50 mol% or less, particularly preferably 30 mol% or less, n is 1 to 4 It is preferable to be represented by Formula (3) in the case.
- Formula (3) When the above upper limit of G 3 of the polyimide polymer is represented by Formula (3) when n is 1 to 4, hydrogen bond between amide bonds derived from Formula (3) when n is 1 to 4
- the ratio of the structural unit represented by Formula (3) in the case of n 1-4 in polyimide type polymer can be measured, for example using 1 H-NMR, or the preparation ratio of a raw material It can also be calculated from
- At least a portion of the plurality of A and A 3 in formula (10) and formula (13) is a compound of formula (4):
- R 10 to R 17 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms, and a hydrogen contained in R 10 to R 17
- the atoms may be each independently substituted with a halogen atom, and * represents a bond
- R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , R 16 and R 17 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or 6 carbon atoms Represents an aryl group of -12;
- Examples of the alkyl group having 1 to 6 carbon atoms or the aryl group having 6 to 12 carbon atoms include those exemplified as the alkyl group having 1 to 6 carbon atoms or the aryl group having 6 to 12 carbon atoms in Formula (3).
- R 10 ⁇ R 17 are each independently preferably represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, more preferably represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, wherein, R 10 ⁇
- the hydrogen atoms contained in R 17 may be each independently substituted with a halogen atom.
- a halogen atom a fluorine atom, a chlorine atom, a bromine atom, an iodine atom is mentioned, for example.
- R 10 to R 17 are each independently, more preferably a hydrogen atom, a methyl group, a fluoro group, a chloro group or a trifluoromethyl group, from the viewpoints of surface hardness, transparency and flexibility of the laminate, particularly preferably R 10 , R 12 , R 13 , R 14 , R 15 and R 16 each represent a hydrogen atom, R 11 and R 17 each represent a hydrogen atom, a methyl group, a fluoro group, a chloro group or a trifluoromethyl group; it is preferred 11 beauty R 17 is a methyl group or a trifluoromethyl group.
- the constitutional unit represented by formula (4) is represented by formula (4 ′): And at least a part of the plurality of A and A 3 is a structural unit represented by Formula (4 ′).
- the laminate while the laminate exhibits high transparency, it can improve the solubility of the polyimide-based polymer in the solvent by the skeleton containing a fluorine element, and can suppress the viscosity of the resin varnish to a low level. Processing of the material film can be facilitated.
- the A and A 3 of the polyimide in the polymer preferably 30 mol% or more, more preferably 50 mol% or more, more preferably 70 mol% or more Equation (4), In particular, it is expressed by equation (4 ').
- equation (4 ') the laminate exhibits high transparency and at the same time contains a fluorine element-containing skeleton
- the solubility of the polyimide-based polymer in a solvent can be improved, the viscosity of the resin varnish can be suppressed to be low, and the processing of the substrate film can be facilitated.
- a and A 3 in the polyimide-based polymer is represented by the formula (4), particularly the formula (4 ′).
- a and A 3 in the polyimide-based polymer may be of the formula (4), in particular (4 ′).
- the ratio of the structural unit represented by Formula (4) of A and A 3 in the polyimide-based polymer can be measured, for example, using 1 H-NMR, or can be calculated from the feed ratio of the raw materials it can.
- At least a portion of the plurality of G's in Formula (10) is Formula (5): [In Formula (5), R 18 to R 25 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms, and a hydrogen contained in R 18 to R 25 The atoms may be each independently substituted with a halogen atom, and * represents a bond] It is a structural unit represented by When at least a part of the plurality of G in the formula (10) is a group represented by the formula (5), the laminate exhibits high transparency and at the same time, the solubility of the polyimide polymer in the solvent Thus, the viscosity of the resin varnish can be reduced and the processing of the substrate film can be facilitated.
- R 18 , R 19 , R 20 , R 21 , R 22 , R 23 , R 24 and R 25 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or 6 carbon atoms Represents an aryl group of -12;
- Examples of the alkyl group having 1 to 6 carbon atoms or the aryl group having 6 to 12 carbon atoms include those exemplified as the alkyl group having 1 to 6 carbon atoms or the aryl group having 6 to 12 carbon atoms in Formula (3).
- R 18 ⁇ R 25 are each independently preferably represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, more preferably represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, wherein, R 18 ⁇
- the hydrogen atoms contained in R 25 may be each independently substituted with a halogen atom.
- the halogen atom includes a fluorine atom, a chlorine atom, a bromine atom and an iodine atom.
- R 18 to R 25 are each independently preferably a hydrogen atom, a methyl group, a fluoro group, a chloro group or a trifluoromethyl group from the viewpoint of easily improving the surface hardness, flexibility and transparency of the laminate.
- R 18 , R 19 , R 20 , R 23 , R 24 and R 25 each represent a hydrogen atom
- R 21 and R 22 each represent a hydrogen atom, a methyl group, a fluoro group, a chloro group or a trifluoromethyl group
- the constitutional unit represented by the formula (5) is represented by the formula (5 ′): Embedded image, that is, at least a portion of the plurality of G's is a structural unit represented by the formula (5 ′).
- the laminate can have high transparency.
- preferably 50 mol% or more, more preferably 60 mol% or more, still more preferably 70 mol% or more of G in the polyimide-based polymer is a compound represented by formula (5), in particular 5 ').
- G within the above range in the polyimide-based polymer is represented by the formula (5), in particular, the formula (5 ′)
- the laminate can have high transparency, and the skeleton further contains a fluorine element.
- the solubility of the polyimide-based polymer in a solvent can be improved, the viscosity of the resin varnish can be suppressed to a low level, and the production of the laminate is easy.
- G in the polyimide-based polymer is represented by the formula (5), in particular, the formula (5 ′).
- G in the polyimide-based polymer may be of the formula (5), in particular (5 ′).
- the ratio of the structural unit represented by the formula (5) of G in the polyimide-based polymer can be measured, for example, using 1 H-NMR, or can be calculated from the feed ratio of the raw materials.
- the polyimide-based polymer can be obtained, for example, by polycondensation of a diamine compound and a tetracarboxylic acid compound (tetracarboxylic acid dianhydride etc.), and for example, JP-A-2006-199945 or JP-A-2008-163107. It can be synthesized according to the method described in the publication.
- a commercial item of polyimide Mitsubishi Gas Chemical Co., Ltd. neoprem (registered trademark), Kawamura Sangyo Co., Ltd. KPI-MX300F etc. can be mentioned.
- the polyimide polymer including the structure represented by the formula (13) can be synthesized, for example, according to the method described in JP-A-2014-528490.
- a polyimide-based polymer (polyimide) having a repeating structural unit represented by the formula (10) can be obtained by reacting a diamine compound with a tetracarboxylic acid compound.
- the polyimide-based polymer (polyamideimide) having a repeating structural unit represented by) and a repeating structural unit represented by formula (13) is further reacted with a diamine compound and a tetracarboxylic acid compound to form a dicarboxylic acid. It can be obtained by reacting a compound, and a polyamide polymer having a repeating structural unit represented by the formula (13) can be obtained by reacting a diamine compound and a dicarboxylic acid compound.
- tetracarboxylic acid compounds include aromatic tetracarboxylic acid compounds such as aromatic tetracarboxylic acid dianhydride; and aliphatic tetracarboxylic acid compounds such as aliphatic tetracarboxylic acid dianhydride.
- the tetracarboxylic acid compounds may be used alone or in combination of two or more.
- the tetracarboxylic acid compound may be a tetracarboxylic acid compound analog such as an acid chloride compound other than a dianhydride.
- aromatic tetracarboxylic acid dianhydride examples include non-condensed polycyclic aromatic tetracarboxylic acid dianhydride, monocyclic aromatic tetracarboxylic acid dianhydride and condensed polycyclic aromatic tetrava Carboxylic acid dianhydride is mentioned.
- a monocyclic aromatic tetracarboxylic acid dianhydride for example, 1,2,4,5-benzenetetracarboxylic acid dianhydride can be mentioned, and a condensed polycyclic aromatic tetracarboxylic acid dianhydride As, for example, 2,3,6,7-naphthalenetetracarboxylic acid dianhydride can be mentioned.
- Aliphatic tetracarboxylic acid dianhydrides include cyclic or non-cyclic aliphatic tetracarboxylic acid dianhydrides.
- the cycloaliphatic tetracarboxylic acid dianhydride is a tetracarboxylic acid dianhydride having an alicyclic hydrocarbon structure, and as a specific example thereof, 1,2,4,5-cyclohexanetetracarboxylic acid dianhydride , 1,2,3,4-cyclobutanetetracarboxylic acid dianhydride, 1,2,3,4-cyclopentanetetracarboxylic acid dianhydride etc., cycloalkanetetracarboxylic acid dianhydride such as bicyclo [2.2 .2] octo-7-ene-2,3,5,6-tetracarboxylic acid dianhydride, dicyclohexyl 3,3'-4,4'-tetracarboxylic acid dianhydride and their re
- acyclic aliphatic tetracarboxylic acid dianhydride examples include 1,2,3,4-butanetetracarboxylic acid dianhydride, 1,2,3,4-pentanetetracarboxylic acid dianhydride, etc. These can be used alone or in combination of two or more.
- cycloaliphatic tetracarboxylic acid dianhydride and acyclic aliphatic tetracarboxylic acid dianhydride may be used in combination.
- 4,4′-oxydiphthalic acid dianhydrides from the viewpoint of high surface hardness, high transparency, high flexibility, high flexibility and low colorability of a laminate, 3, 3 ', 4,4'-benzophenonetetracarboxylic acid dianhydride, 3,3', 4,4'-biphenyltetracarboxylic acid dianhydride, 2,2 ', 3,3'-biphenyltetracarboxylic acid dianhydride , 3,3 ', 4,4'-Diphenylsulfonetetracarboxylic dianhydride, 2,2-bis (3,4-dicarboxyphenyl) propane dianhydride, 4,4'-(hexafluoroisopropylidene) 2.) Diphthalic dianhydride, and mixtures thereof are preferred, 3,3 ', 4,4'-biphenyltetracarboxylic dianhydride and 4,4'-(
- dicarboxylic acid compound preferably 4,4′-oxybisbenzoic acid and / or its acid chloride compound is used.
- other dicarboxylic acid compounds may be used.
- aromatic dicarboxylic acids, aliphatic dicarboxylic acids and acid chloride compounds of their analogs, acid anhydrides and the like may be mentioned, and two or more may be used in combination.
- dicarboxylic acid compounds of terephthalic acid include dicarboxylic acid compounds of terephthalic acid; isophthalic acid; naphthalenedicarboxylic acid; 4,4'-biphenyldicarboxylic acid; 3,3'-biphenyldicarboxylic acid; Compounds in which two benzoic acids are linked by a single bond, -CH 2- , -C (CH 3 ) 2- , -C (CF 3 ) 2- , -SO 2 -or a phenylene group, and their acid chloride compounds It can be mentioned. Among these other dicarboxylic acid compounds, terephthalic acid is preferred.
- 4,4′-oxybis (benzoyl chloride) and terephthaloyl chloride are preferable, and it is more preferable to use 4,4′-oxybis (benzoyl chloride) and terephthaloyl chloride in combination.
- the above-mentioned polyimide-based polymer is a tetracarboxylic acid and a tricarboxylic acid, and anhydrides thereof, as long as various physical properties of the laminate are not impaired.
- the derivative may be further reacted.
- tricarboxylic acid compounds include aromatic tricarboxylic acids, aliphatic tricarboxylic acids and acid chloride compounds of their analogs, acid anhydrides and the like, and two or more may be used in combination.
- anhydrides of 1,2,4-benzenetricarboxylic acid; 2,3,6-naphthalenetricarboxylic acid-2,3-anhydride; phthalic anhydride and benzoic acid are a single bond, -O- And -CH 2- , -C (CH 3 ) 2- , -C (CF 3 ) 2- , -SO 2 -or a compound linked by a phenylene group.
- diamine compounds include aliphatic diamines, aromatic diamines and mixtures thereof.
- the “aromatic diamine” represents a diamine in which an amino group is directly bonded to an aromatic ring, and part of the structure thereof may contain an aliphatic group or another substituent.
- the aromatic ring may be a single ring or a condensed ring, and examples thereof include benzene ring, naphthalene ring, anthracene ring, fluorene ring and the like, but are not limited thereto. Among these, preferred is a benzene ring.
- "aliphatic diamine” represents a diamine in which an amino group is directly bonded to an aliphatic group, and part of the structure thereof may contain an aromatic ring or another substituent.
- Aliphatic diamines include, for example, acyclic aliphatic diamines such as hexamethylene diamine, as well as 1,3-bis (aminomethyl) cyclohexane, 1,4-bis (aminomethyl) cyclohexane, norbornane diamine and 4,4 ′. And-cyclic aliphatic diamines such as diaminodicyclohexylmethane and the like. These can be used alone or in combination of two or more.
- aromatic diamines include p-phenylenediamine, m-phenylenediamine, 2,4-toluenediamine, m-xylylenediamine, p-xylylenediamine, 1,5-diaminonaphthalene, 2,6-diaminonaphthalene and the like Aromatic diamine having one aromatic ring, 4,4'-diaminodiphenylmethane, 4,4'-diaminodiphenylpropane, 4,4'-diaminodiphenyl ether, 3,4'-diaminodiphenyl ether, 3,3'- Diaminodiphenyl ether, 4,4′-diaminodiphenyl sulfone, 3,4′-diaminodiphenyl sulfone, 3,3′-diaminodiphenyl sulfone, 1,4-bis (4-aminophenoxy) benzene, 1,3-bis (4-
- aromatic diamine preferably 4,4'-diaminodiphenylmethane, 4,4'-diaminodiphenylpropane, 4,4'-diaminodiphenyl ether, 3,3'-diaminodiphenyl ether, 4,4'-diaminodiphenyl sulfone, 3,3'-diaminodiphenyl sulfone, 1,4-bis (4-aminophenoxy) benzene, bis [4- (4-aminophenoxy) phenyl] sulfone, bis [4- (3-aminophenoxy) phenyl] sulfone, 2,2-bis [4- (4-aminophenoxy) phenyl] propane, 2,2-bis [4- (3-aminophenoxy) phenyl] propane, 2,2'-dimethylbenzidine, 2,2'-bis (Trifluoromethyl) -4,4'-diaminodiphenyl (
- At least one selected from the group consisting of aromatic diamines having a biphenyl structure from the viewpoint of high surface hardness, high transparency, high flexibility, high flexibility and low colorability of the laminate It is preferable to use One selected from the group consisting of 2,2′-dimethylbenzidine, 2,2′-bis (trifluoromethyl) benzidine, 4,4′-bis (4-aminophenoxy) biphenyl and 4,4′-diaminodiphenylether It is more preferable to use the above, and it is even more preferable to use 2,2′-bis (trifluoromethyl) -4,4′-diaminodiphenyl (TFMB).
- TFMB 2,2′-bis (trifluoromethyl) -4,4′-diaminodiphenyl
- an imidization catalyst may be present in the synthesis reaction of the polyimide-based polymer.
- the imidization catalyst include aliphatic amines such as tripropylamine, dibutylpropylamine and ethyldibutylamine; N-ethylpiperidine, N-propylpiperidine, N-butylpyrrolidine, N-butylpiperidine, and N-propylhexahydro Alicyclic amines such as azepine (monocyclic); azabicyclo [2.2.1] heptane, azabicyclo [3.2.1] octane, azabicyclo [2.2.2] octane, and azabicyclo [3.2.
- Alicyclic amines such as 2] nonane (polycyclic); and pyridine, 2-methylpyridine (2-picoline), 3-methylpyridine (3-picoline), 4-methylpyridine (4-picoline), 2- Ethylpyridine, 3-ethylpyridine, 4-ethylpyridine, 2,4-dimethylpyridine, 2,4,6-trimethic acid Pyridine, 3,4-cyclopentenopyridine pyridine, 5,6,7,8-tetrahydroisoquinoline, and aromatic amines isoquinoline. Further, from the viewpoint of facilitating the imidization reaction, it is preferable to use an acid anhydride together with the imidization catalyst.
- the acid anhydride examples include conventional acid anhydrides used in the imidization reaction, and specific examples thereof include aliphatic acid anhydrides such as acetic anhydride, propionic acid anhydride and butyric anhydride, and aromatic compounds such as phthalic acid An acid anhydride etc. are mentioned.
- the reaction temperature of the diamine compound, tetracarboxylic acid compound, and dicarboxylic acid compound is not particularly limited, and is, for example, 50 to 350 ° C.
- the reaction time is also not particularly limited, but is, for example, about 30 minutes to 10 hours.
- the reaction may be carried out under inert atmosphere or under reduced pressure, as required.
- the reaction may be carried out in a solvent, and examples of the solvent include the later-described solvents used for preparation of a resin varnish.
- the weight average molecular weight of the polyimide polymer or the polyamide polymer is preferably 200,000 or more, more preferably 250,000 or more, still more preferably 300,000 or more, particularly preferably 400 Or more, preferably 600,000 or less, more preferably 500,000 or less.
- the weight average molecular weight of the polyimide polymer or the polyamide polymer is preferably 10,000 to 500,000, more preferably 50,000 to 480,000, and still more preferably It may be 70,000 to 450,000, particularly preferably 100,000 to 400,000.
- the polyimide-based polymer can obtain high flexibility, can suppress the viscosity of the resin varnish to a low level, and is easy to stretch the polyimide-based polymer. Therefore, the processability is good.
- a weight average molecular weight can perform GPC measurement and can be calculated
- the polyimide-based polymer and the polyamide-based polymer contained in the substrate film may contain a halogen atom such as a fluorine atom which can be introduced by the above-mentioned fluorine-based substituent or the like.
- a halogen atom such as a fluorine atom which can be introduced by the above-mentioned fluorine-based substituent or the like.
- the fluorine-containing substituent include a fluoro group and a trifluoromethyl group.
- the polyimide-based polymer and the polyamide-based polymer contain a halogen atom, the modulus of elasticity of the substrate film can be improved and at the same time the degree of yellowness (YI value) can be reduced. It is preferred that the molecule contains a halogen atom in the molecule.
- the halogen atom is preferably a fluorine atom from the viewpoint of reduction of yellowness (improvement of transparency), reduction of water absorption rate, and suppression of deformation of the base film. Furthermore, when the halogen atom is a fluorine atom, the bending line hardly remains when the laminate is bent, and the laminate can be particularly usefully used when deformation such as bending of the flexible display occurs.
- the content of halogen atoms in the polyimide-based polymer and the polyamide-based polymer is an improvement in hardness, an improvement in elastic modulus, a reduction in yellowness (an improvement in transparency), a reduction in water absorption, and a suppression of deformation of the base film
- 100 parts by mass of the polyimide-based polymer is preferably 1 to 40 parts by mass, more preferably 3 to 35 parts by mass, and still more preferably 5 to 32 parts by mass.
- the substrate film comprises the polyimide-based polymer.
- the content of the polyimide-based polymer in the base film is preferably 40 parts by mass or more, more preferably 50 parts by mass or more, still more preferably 70 parts by mass, still more preferably 100 parts by mass of the base film. 90 parts by mass or more, particularly preferably 100 parts by mass. If the content of the polyimide-based polymer is 40 parts by mass or more, the flexibility of the base film is good.
- the substrate film may contain an additive.
- an additive an inorganic material, the said ultraviolet absorber, the said other additive etc. are mentioned, for example. These additives may be used alone or in combination of two or more.
- the inorganic material in addition to the above-mentioned inorganic particles, silicon compounds such as quaternary alkoxysilanes such as tetraethyl orthosilicate (TEOS) and the like can be mentioned.
- TEOS tetraethyl orthosilicate
- the inorganic material is preferably inorganic particles, particularly silica particles. The inorganic particles may be bound by a molecule having a siloxane bond.
- the average particle size of the silica particles is preferably 10 nm or more, more preferably 15 nm or more, still more preferably 20 nm or more, preferably 100 nm or less, more preferably 90 nm or less, still more preferably 80 nm or less, still more preferably 70 nm or less Particularly preferably, it is at most 60 nm, more preferably at most 50 nm, particularly preferably at most 40 nm. It is easy to improve the flexibility and transparency of a layered product as the average particle diameter of a silica particle is the above-mentioned range.
- the average particle size of the laminate can be measured by the BET method.
- the average particle size may be measured by image analysis with a transmission electron microscope (TEM) or a scanning electron microscope (SEM).
- the content of the silica particles is preferably 1 part by mass or more, more preferably 5 parts by mass or more, still more preferably 10 parts by mass or more, with respect to 100 parts by mass of the base film. Still more preferably, it is 20 parts by mass or more, preferably 60 parts by mass or less, more preferably 50 parts by mass or less.
- the content of the silica particles is in the above range, the elastic modulus and the flexibility of the laminate can be easily improved.
- the content of the additive can be appropriately selected according to the type of the additive, and is, for example, 0.01 to 60 parts by mass, preferably 0 based on 100 parts by mass of the substrate film. 1 to 60 parts by mass, more preferably 1 to 50 parts by mass.
- the thickness of the substrate film is appropriately adjusted depending on the application, but is usually 10 to 1,000 ⁇ m, preferably 15 to 500 ⁇ m, more preferably 20 to 400 ⁇ m, still more preferably 25 to 300 ⁇ m, still more preferably 25 to 50 It is 100 ⁇ m, particularly preferably 25 to 75 ⁇ m.
- the thickness of the substrate film is in the above range, the flexibility is good, and at the same time it can advantageously contribute to the thinning of the image display device, in addition to the mechanical strength as the substrate and the surface at the time of laminate formation It tends to be easy to secure the hardness.
- the method for producing the substrate film is not particularly limited, and for example, the following steps: (A) a step of preparing a liquid containing the resin (sometimes referred to as a resin varnish) (varnish preparation step), (B) applying a resin varnish to a support to form a coating (coating step), and (c) drying the applied liquid (coating) to form a base film (base material Film forming process) Can be manufactured by a method including:
- the resin is dissolved in a solvent, and if necessary, the resin varnish is prepared by stirring and mixing the additives such as the silica particles.
- the additives such as the silica particles.
- silica particles are used as the additive, a dispersion of silica sol containing silica particles may be added to the resin, even if it is substituted with a solvent capable of dissolving the resin, for example, a solvent used for the preparation of the varnish described below. Good.
- the solvent used for preparation of the resin varnish is not particularly limited as long as the polymer can be dissolved.
- solvents include, for example, amide solvents such as N, N-dimethylacetamide and N, N-dimethylformamide; lactone solvents such as ⁇ -butyrolactone (GBL) and ⁇ -valerolactone; dimethyl sulfone, dimethyl sulfoxide, sulfolane and the like Sulfur-containing solvents of the above; carbonate solvents such as ethylene carbonate and propylene carbonate; and combinations thereof (mixed solvents).
- amide solvents or lactone solvents are preferable.
- These solvents can be used alone or in combination of two or more.
- the varnish may contain water, alcohol solvents, ketone solvents, non-cyclic ester solvents, ether solvents and the like.
- the solid content concentration of the varnish is preferably 1 to 25% by mass, more preferably 5 to 15% by mass.
- a varnish is apply
- known coating methods include wire bar coating, roll coating such as reverse coating and gravure coating, die coating, comma coating, lip coating, spin coating, screen coating, fountain coating, dipping, The spray method, the drip molding method, etc. are mentioned.
- a base film in a base film formation process, can be formed by drying a coating film and exfoliating from a base. You may perform the drying process which dries a base film further after peeling. Drying of the coating can be carried out usually at a temperature of 50 to 350.degree. If necessary, the coating may be dried under inert atmosphere or reduced pressure conditions.
- the support material examples include PET film, PEN film, other polyimide polymer or polyamide polymer film, and the like.
- a PET film, a PEN film and the like are preferable from the viewpoint of excellent heat resistance, and a PET film is more preferable from the viewpoint of adhesion to a substrate at the time of film formation, easy releasability and cost.
- a metal belt such as stainless steel or a glass plate can also be used.
- the cured film may have a single layer structure or a multilayer structure.
- the thickness of the cured film can be appropriately selected according to the application such as the image display apparatus to which the laminate is applied, and may be, for example, 1 to 50 ⁇ m, preferably 2 to 30 ⁇ m.
- the thickness of the cured film is more preferably 3 to 20 ⁇ m, still more preferably 6 to 18 ⁇ m, and still more preferably 8 to 16 ⁇ m because the surface hardness and flexibility are excellent.
- the thickness of the cured film can be measured using a contact type Digimatic indicator.
- the laminate of the present invention may have a primer layer disposed between the substrate film and the cured film.
- the primer layer may be disposed only between the substrate film and the one cured film, or between the substrate film and the one cured film and A primer layer may be disposed both between the substrate film and the other cured film.
- a primer layer is a layer formed from a primer agent, and can improve the adhesiveness of a base film and a cured film.
- the compound contained in the primer layer may be chemically bonded at the interface with the polymer contained in the substrate film, preferably a polyimide-based polymer.
- primer agent there are, for example, a primer agent of an ultraviolet curing type, a thermosetting type or a two-component curing type epoxy compound.
- the primer agent may be a polyamic acid. These are suitable in order to enhance the adhesion between the substrate film and the cured film when the substrate film comprises a polyimide-based polymer.
- the primer agent may contain a silane coupling agent.
- the silane coupling agent may be chemically bonded to the silicon compound which may be contained in the substrate film by condensation reaction.
- a silane coupling agent can be used suitably, especially when the compounding ratio of the silicon compound which may be contained in a base film is high.
- the silane coupling agent is preferably a compound having an alkoxysilyl group having a silicon atom and 1 to 3 alkoxy groups covalently bonded to the silicon atom.
- a compound containing a structure in which two or more alkoxy groups are covalently bonded to a silicon atom is more preferable, and a compound containing a structure in which three alkoxy groups are covalently bonded to a silicon atom is more preferable.
- the alkoxy group include a methoxy group, an ethoxy group, an isopropoxy group, an n-butoxy group and a tert-butoxy group. Among these, a methoxy group and an ethoxy group are preferable because they can enhance the reactivity with the silicon compound.
- a silane coupling agent has a substituent with high affinity with a base film and a cured film. It is preferable that the substituent of a silane coupling agent is an epoxy group, an amino group, a ureido group, or an isocyanate group from a viewpoint of affinity with the polyimide type polymer which may be contained in a substrate film.
- the cured film contains (meth) acrylates, the affinity is enhanced if the silane coupling agent that can be used in the primer layer has an epoxy group, a methacryl group, an acryl group, an amino group or a styryl group. preferable.
- the silane coupling agent having a substituent selected from a methacryl group, an acryl group and an amino group is used for the affinity between the substrate film and the cured film when the substrate film comprises a polyimide polymer. It is preferable because it exhibits an excellent tendency.
- the thickness of the primer layer is appropriately adjusted according to the cured film, and is, for example, 0.01 nm to 20 ⁇ m.
- the thickness of the primer layer is preferably 0.01 to 20 ⁇ m, more preferably 0.1 to 10 ⁇ m.
- the thickness of the primer layer is preferably 0.1 nm to 1 ⁇ m, more preferably 0.5 nm to 0.1 ⁇ m.
- the laminate of the present invention may further comprise a functional layer in addition to the base film and the cured film.
- the functional layer include layers having various functions such as an ultraviolet light absorbing layer, an adhesive layer, a hue adjusting layer, and a refractive index adjusting layer.
- the laminate of the present invention may have one or more functional layers. Also, one functional layer may have a plurality of functions.
- the ultraviolet absorbing layer is a layer having an ultraviolet absorbing function, and for example, a main material selected from an ultraviolet curable transparent resin, an electron beam curable transparent resin, and a thermosetting transparent resin, and the main material It is composed of a dispersed UV absorber.
- the adhesive layer is a layer having an adhesive function, and has a function of adhering the base film or the laminate to another member.
- a material for forming the adhesive layer those generally known can be used.
- a thermosetting resin composition or a photocurable resin composition can be used.
- the adhesive layer may be composed of a resin composition containing a component having a polymerizable functional group.
- strong adhesion can be realized by further polymerizing the resin composition that constitutes the adhesive layer after bringing the laminate into close contact with other members.
- the adhesive strength between the other member and the adhesive layer contained in the laminate may be 0.1 N / cm or more, or 0.5 N / cm or more.
- the adhesive layer may contain a thermosetting resin composition or a photocurable resin composition as a material.
- the resin composition can be polymerized and cured by supplying energy later.
- the pressure-sensitive adhesive layer may be a layer called pressure sensitive adhesive (PSA) that is attached to an object by pressing.
- PSA pressure sensitive adhesive
- the pressure-sensitive adhesive may be a pressure-sensitive adhesive that is “a substance that has tackiness at normal temperature and adheres to an adherend with light pressure” (JIS K6800), and “protects a specific component with a coating (microcapsule)
- the capsule type adhesive may be an adhesive which can maintain the stability until it breaks the film by an appropriate means (pressure, heat, etc.). (JIS K6800).
- the hue adjustment layer is a layer having a function of hue adjustment, and is a layer capable of adjusting the laminate to a desired hue.
- the hue adjustment layer is, for example, a layer containing a resin and a colorant.
- a coloring agent For example, Inorganic pigments such as titanium oxide, zinc oxide, red oxide, calcined titanium oxide based pigments, ultramarine blue, cobalt aluminate, and carbon black; azo based compounds, quinacridone based compounds, anthraquinone based compounds, perylenes Organic pigments such as isoindolinone compounds, phthalocyanine compounds, quinophthalone compounds, sthrene compounds and diketopyrrolopyrrole compounds; extender pigments such as barium sulfate and calcium carbonate; basic dyes, acid Dyes, and dyes such as mordant dyes can be mentioned.
- the refractive index adjusting layer is a layer having a function of adjusting the refractive index, has a refractive index different from that of the base film, and is a layer capable of giving a predetermined refractive index to the laminate.
- the refractive index adjusting layer may be, for example, a resin layer containing an appropriately selected resin, and optionally, a pigment, or a metal thin film.
- Examples of the pigment for adjusting the refractive index include silicon oxide, aluminum oxide, antimony oxide, tin oxide, titanium oxide, zirconium oxide and tantalum oxide.
- the average primary particle size of the pigment may be 0.1 ⁇ m or less. By setting the average primary particle diameter of the pigment to 0.1 ⁇ m or less, irregular reflection of light transmitted through the refractive index adjustment layer can be prevented, and a decrease in transparency can be prevented.
- metals used for the refractive index adjustment layer include metals such as titanium oxide, tantalum oxide, zirconium oxide, zinc oxide, tin oxide, silicon oxide, indium oxide, titanium oxynitride, titanium nitride, silicon oxynitride, and silicon nitride. An oxide, a metal nitride, etc. are mentioned.
- the said primer layer may be arrange
- the laminate of the present invention is excellent in surface hardness and flexibility since it includes a cured film obtained by curing the curable composition. Furthermore, the laminate of the present invention also has excellent oxygen barrier properties and warpage resistance. Therefore, it is useful as a front plate of an image display device or the like.
- the laminate of the present invention is laminated (or bonded) to an optical film directly or via a resin layer or the like.
- An optical film (a film having optical properties) has a single-layer structure (for example, an optical functional film such as a polarizer, a retardation film, a brightness enhancement film, an antiglare film, an antireflective film, a diffusion film, a light collection film, etc.) It may be a multilayer structure (for example, a polarizing plate, a retardation plate, etc.).
- the optical film is preferably a polarizing plate, a polarizer, a retardation plate or a retardation film, particularly preferably a polarizing plate.
- the resin layer is not particularly limited.
- acrylic resin polycarbonate resin, polyester resin, norbornene resin, cellulose ester resin, cyclic olefin resin, styrene resin, methyl methacrylate-styrene resin, acrylonitrile A styrene resin, an acrylonitrile-butadiene-styrene resin, etc.
- a separate film release film
- the separate film is usually peeled off when using a laminate including an optical film.
- the separate film include polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyarete, etc. Even among the optical film side and the separate film side, the surface on the optical film side is subjected to release treatment. Good.
- the oxygen permeability is preferably 800 cc / (m 2 ⁇ 24 h ⁇ atm) or less, more preferably 600 cc / (m 2 ⁇ 24 h ⁇ atm) or less, still more preferably 400 cc / (m 2 ⁇ 24 h ⁇ atm), particularly preferably 300 cc / (m 2 ⁇ 24 h ⁇ atm) or less.
- the oxygen permeability is in the above-mentioned range, when the laminate is applied to an image display device or the like, deterioration of a display element, a polarizing plate or the like can be effectively suppressed.
- the oxygen permeability can be measured by the method described in the examples.
- the laminate of the present invention is preferably free of cracks when bent for 10 consecutive times with a bending radius of 3 mm in a mandrel test. In a particularly preferred embodiment, no cracking occurs even when bending is continuously performed 10 times with a bending radius of 2 mm. Since the laminate of the present invention has such excellent flexibility, it can be suitably used for a flexible display. In addition, a mandrel test can be implemented by the method as described in an Example.
- the pencil hardness of the laminate of the present invention is preferably H or more, more preferably 2H or more, further preferably 3H or more, still more preferably 4H or more, particularly preferably 5H or more. Since the laminate of the present invention has such excellent surface hardness, when used as a front plate of an image display device or the like, the damage on the surface of the image display device can be effectively suppressed.
- the laminate of the present invention has a small amount of warping even after being left to stand for a long time after the laminate is cut into a predetermined size, and has excellent warp resistance.
- the warpage amount is preferably ⁇ 8 mm or less, more preferably ⁇ 6 mm or less, still more preferably ⁇ 5 mm or less, still more preferably ⁇ 4 mm or less, and particularly preferably ⁇ 3 mm or less.
- the amount of warpage can be measured by the method described in the examples.
- the laminate of the present invention can be produced, for example, by the following steps: (D) a step of applying the curable composition of the present invention onto a substrate film to form a coating film (coating film forming step), (E) A step of irradiating the coating film with high energy rays to cure the coating film to form a cured film (curing step) Can be manufactured by a manufacturing method including
- the curable composition dissolved in a solvent may be applied to the substrate film.
- the solvent should be capable of dissolving the curable composition, for example, methanol, ethanol, 1-propanol, 2-propanol (isopropyl alcohol), 1-butanol, 2-butanol (sec-butyl alcohol), 2-methyl Alcohol solvents such as -1-propanol (isobutyl alcohol), 2-methyl-2-propanol (tert-butyl alcohol), etc .; 2-ethoxyethanol, 2-butoxyethanol, 3-methoxy-1-propanol, 1-methoxy-2 -Alkoxy alcohol solvents such as propanol and 1-ethoxy-2-propanol; ketol solvents such as diacetone alcohol; ketone solvents such as acetone, methyl ethyl ketone and methyl isobutyl ketone; aromatic hydrocarbon solvents such as toluene and xylene; ethyl acetate
- the coating film formed on the substrate film may be dried. Drying of the coating can be carried out by evaporating the solvent at a temperature of 50 to 150 ° C., and the drying time is usually 30 to 180 seconds. Drying may be performed under the atmosphere, under an inert atmosphere, or under reduced pressure.
- biaxial stretching may be simultaneous biaxial stretching or sequential biaxial stretching.
- the coating film is irradiated with high energy rays (for example, active energy rays) to cure the coating film to form a cured film.
- the irradiation intensity is appropriately determined depending on the composition of the curable composition and is not particularly limited, but irradiation of a wavelength range effective for activating the photocationic polymerization initiator and the photoradical polymerization initiator is preferable.
- the irradiation intensity is preferably 0.1 ⁇ 6,000mW / cm 2, more preferably 10 ⁇ 1,000mW / cm 2, more preferably 20 ⁇ 500mW / cm 2.
- the irradiation time may be appropriately selected according to the composition of the curable composition, and is not particularly limited, but the integrated light quantity represented as the product of the irradiation intensity and the irradiation time is preferably 10 to 10,000 mJ /. cm 2, more preferably 50 ⁇ 1,000mJ / cm 2, more preferably set to be 80 ⁇ 500mJ / cm 2.
- the accumulated light amount is in the above range, a sufficient amount of active species derived from the photocationic polymerization initiator or the photoradical polymerization initiator can be generated to allow the curing reaction to proceed more reliably, and the irradiation time is long. Not too much and maintain good productivity.
- the laminate of the present invention is useful as a front plate of an image display device, particularly as a front plate (window film) of a flexible display.
- the present invention can also provide an image display device including the laminate of the present invention, particularly a flexible display.
- the flexible display according to the present embodiment includes, for example, a flexible functional layer and a laminate of the present invention (functioning as a front plate) laminated on the flexible functional layer. That is, the front plate of the flexible display is disposed on the viewing side above the flexible functional layer.
- the front plate has a function of protecting the flexible functional layer.
- the image display device may be a television, a smartphone, a mobile phone, a car navigation system, a tablet PC, a portable game machine, an electronic paper, an indicator, a bulletin board, a watch, and a wearable device such as a smart watch.
- Flexible display is meant to encompass all image display devices having flexible characteristics.
- Light source lamp High pressure mercury lamp
- Integrated light quantity 500mJ / cm 2 Peak intensity: 200mW / cm 2
- the integrated light quantity is a value measured using a laminated actinometer (365 nm) of the above-mentioned UV irradiation device.
- Examples 26-29 The components shown in Table 3 were weighed and stirred to prepare a curable composition. In place of the substrate film 1 obtained in Production Example 1, the substrate film 2 obtained in Production Example 2 was used, and the thickness of the cured film was adjusted to be 16 ⁇ m, Example 1- In the same manner as in No. 25, a laminate in which the cured film was laminated on one surface of the base film 2 was obtained. The thickness of the cured film was 16 ⁇ m. In addition, the compounding quantity of each compounding component shown in Table 3, when the used goods contain a solvent etc., shows the mass part number of the active ingredient contained there.
- Example 30 The components shown in Table 3 were weighed and stirred to prepare a curable composition.
- One of the base films 2 was prepared in the same manner as in Examples 1 to 25 except that the base film 2 obtained in Production Example 2 was used instead of the base film 1 obtained in Production Example 1.
- stacked on the surface was obtained.
- the thickness of the cured film was 9 ⁇ m.
- the compounding quantity of each compounding component shown in Table 3 when the used goods contain a solvent etc., shows the mass part number of the active ingredient contained there.
- Warp measurement The laminates obtained in Examples 1 to 30 and Comparative Example 1 are cut into 3.5 cm ⁇ 4.0 cm and conditioned for 24 hours under the conditions of constant temperature and humidity of 23 ° C./50% RH, A measurement sample was obtained. Place the measurement sample on a flat surface so that the lower side is convex, and measure the height from the flat surface to the four corners of the measurement sample using the digital dimension measurement device LS-7600 (manufactured by KEYENCE). The average value of the obtained four values was taken as the amount of warpage.
- ⁇ Bis cyclic ether compound 1> 3,4-Epoxycyclohexylmethyl 3,4-Epoxycyclohexanecarboxylate (Celoxide (registered trademark) 2021 P", manufactured by Daicel Chemical Industries, Ltd.)
- ⁇ Bis cyclic ether compound 3 Mixture of xylylene bis oxetanes (mixture of xylylene skeleton repeating unit number 1, 2 or 3) ("OXT-121", manufactured by Toagosei Co., Ltd.)
- ⁇ Inorganic particles > Acryloyl modified silica particles ("PGM-AC-2140Y” manufactured by Nissan Chemical Industries, Ltd., particle diameter 10 to 15 nm)
- ⁇ Cationic polymerization initiator> A mixture of iodonium (4-methylphenyl) [4- (2-methylpropyl) phenyl] -hexafluorophosphate and propylene carbonate in a 3: 1 ratio (by weight) ("IRGACURE® 250", BASF Japan Ltd. )) ⁇ Radical polymerization initiator> 1-hydroxy-cyclohexyl-phenyl-ketone ("IRGACURE 184", manufactured by BASF Japan Ltd.)
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Abstract
Description
従って、本発明の目的は、表面硬度及び屈曲性に優れた積層体を形成可能な硬化性組成物、該硬化性組成物を硬化させてなる硬化膜、及び該硬化膜を含む積層体を提供することにある。
[2]カチオン重合性モノマー(B)は、1以上のエポキシ基及び/又は1以上のオキセタニル基を有する環状エーテル化合物(B-1)を含む、[1]に記載の硬化性組成物。
[3]環状エーテル化合物(B-1)は、2以上のエポキシ基及び/又は2以上のオキセタニル基を有するビス環状エーテル化合物(B-1-1)を含む、[2]に記載の硬化性組成物。
[4]カチオン重合性モノマー(B)はビニルオキシ化合物(B-2)をさらに含む、[1]~[3]のいずれかに記載の硬化性組成物。
[5]硬化性組成物100質量部に対して、多官能(メタ)アクリレートモノマー(A)の含有量は5~80質量部であり、環状エーテル化合物(B-1)の含有量は5~80質量部であり、ビニルオキシ化合物(B-2)の含有量は3~60質量部である、[4]に記載の硬化性組成物。
[6]ビニルオキシ化合物(B-2)の含有量は、多官能(メタ)アクリレートモノマー(A)及びカチオン重合性モノマー(B)の総量100質量部に対して、3~50質量部である、[4]又は[5]に記載の硬化性組成物。
[7]環状エーテル化合物(B-1)は、1以上のラジカル重合性官能基を有するラジカル重合性環状エーテル化合物(B-1-2)を含む、[2]~[6]のいずれかに記載の硬化性組成物。
[8]硬化性組成物100質量部に対して、多官能(メタ)アクリレートモノマー(A)の含有量は5~50質量部であり、ビス環状エーテル化合物(B-1-1)の含有量は3~30質量部であり、ラジカル重合性環状エーテル化合物(B-1-2)の含有量は5~40質量部である、[7]に記載の硬化性組成物。
[9]ラジカル重合性環状エーテル化合物(B-1-2)の含有量は、ビス環状エーテル化合物(B-1-1)1質量部に対して、0.1~10質量部である、[7]又は[8]に記載の硬化性組成物。
[10]ラジカル重合開始剤(C)及びカチオン重合開始剤(D)をさらに含む、[1]~[9]のいずれかに記載の硬化性組成物。
[11]ラジカル重合開始剤(C)の含有量は、多官能(メタ)アクリレートモノマー(A)100質量部に対して、1~15質量部であり、カチオン重合開始剤(D)の含有量は、カチオン重合性モノマー(B)100質量部に対して、1~15質量部である、[10]に記載の硬化性組成物。
[12]無機粒子をさらに含む、[1]~[11]のいずれかに記載の硬化性組成物。
[13]無機粒子が反応性シリカ粒子である場合、反応性シリカ粒子の含有量は、硬化性組成物の質量に対して、1~70質量%である、[12]に記載の硬化性組成物。
[14][1]~[13]のいずれかに記載の硬化性組成物を硬化させてなる硬化膜。
[15][14]に記載の硬化膜が、基材フィルムの少なくとも一方の面に積層された、積層体。
[16]基材フィルムはポリイミド系高分子を含んでなる、[15]に記載の積層体。
[17]酸素透過度は、800cc/(m2・24h・atm)以下である、[15]又は[16]に記載の積層体。
[18][15]~[17]のいずれかに記載の積層体を含む、フレキシブルディスプレイ。
本発明の硬化性組成物は、多官能(メタ)アクリレートモノマー(A)と、カチオン重合性モノマー(B)とを含有する。
多官能(メタ)アクリレートモノマー(A)とは、分子内に2個以上の(メタ)アクリロイルオキシ基を有する化合物を意味し、本発明における多官能(メタ)アクリレートモノマー(A)は、3官能(メタ)アクリレートモノマー、4官能(メタ)アクリレートモノマー及び8官能(メタ)アクリレートモノマーからなる群から選択される少なくとも2種を含む。なお、本明細書において、用語「(メタ)アクリレート」とは、「アクリレート」又は「メタクリレート」を意味し、用語「(メタ)アクリロイル」も同様に、「アクリロイル」又は「メタクリロイル」を意味する。
本明細書において、表面硬度とは本発明の積層体における硬化膜側の表面の硬さを示す。屈曲性とは本発明の積層体を屈曲させた時に、クラック等の発生を抑制できる特性を意味する。酸素バリア性とは、酸素を透過させにくい特性を意味し、酸素バリア性が高いほど、酸素透過性又は酸素透過度が低いことを示す。耐反り性とは反りが起こりにくい特性を意味し、耐反り性が高いほど、反りが起こりにくいことを示す。
本発明の硬化性組成物はカチオン重合性モノマー(B)を含有する。カチオン重合性モノマー(B)とは、分子内にカチオン重合性基を有する化合物を意味する。カチオン重合性モノマー(B)は、積層体の表面硬度、屈曲性、酸素バリア性、及び耐反り性の観点から、1以上のエポキシ基及び/又は1以上のオキセタニル基を有する環状エーテル化合物(B-1)並びにビニルオキシ化合物(B-2)から選択される少なくとも1種を含むことが好ましい。
環状エーテル化合物(B-1)としては、例えば分子内に1以上のエポキシ基を有するエポキシ化合物[エポキシ化合物(b)と称する]、分子内に1以上のオキセタニル基を有するオキセタン化合物[オキセタン化合物(b)と称する]、1以上のラジカル重合性官能基を有するラジカル重合性環状エーテル化合物(B-1-2)などが挙げられる。エポキシ化合物(b)、オキセタン化合物(b)、及びラジカル重合性環状エーテル化合物(B-1-2)は単独又は二種以上組合せて使用できる。
ビニルオキシ化合物(B-2)とは、分子内に1以上のビニルオキシ基を有する化合物を意味する。特にビニルオキシ化合物(B-2)は2以上のビニルオキシ基を有する化合物が好ましい。これらのビニルオキシ化合物(B-2)は単独又は2種以上組合せて使用できる。ビニルオキシ化合物(B-2)はモノマー又はオリゴマーであってもよいが、好ましくはモノマーである。
本発明の硬化性組成物は、ラジカル重合開始剤(C)及びカチオン重合開始剤(D)を含んでよい。迅速に硬化させやすいという観点から、光ラジカル重合開始剤(C)及び光カチオン重合開始剤(D)を含むことが好ましい。硬化性組成物中に光ラジカル重合開始剤を含有すると、ラジカル重合性化合物である多官能(メタ)アクリレートモノマー(A)を迅速に硬化させることができる。光ラジカル重合開始剤は、可視光線、紫外線、X線、電子線のような活性エネルギー線の照射により、ラジカル重合性化合物の硬化を開始できるものであれば特に限定されず、その具体例としては、アセトフェノン、3-メチルアセトフェノン、ベンジルジメチルケタール、1-(4-イソプロピルフェニル)-2-ヒドロキシ-2-メチルプロパン-1-オン、2-メチル-1-[4-(メチルチオ)フェニル]-2-モルホリノプロパン-1-オン及び2-ヒドロキシ-2-メチル-1-フェニルプロパン-1-オン等のアセトフェノン系開始剤;ベンゾフェノン、4-クロロベンゾフェノン及び4,4′-ジアミノベンゾフェノン等のベンゾフェノン系開始剤;2,2-ジメトキシ-1,2-ジフェニルエタン-1-オン、1-ヒドロキシーシクロヘキシル-フェニル-ケトン等のアルキルフェノン系開始剤;ベンゾインプロピルエーテル及びベンゾインエチルエーテル等のベンゾインエーテル系開始剤;4-イソプロピルチオキサントン等のチオキサントン系開始剤;ビス(2,4,6-トリメチルベンゾイル)-フェニルホスフィンオキサイド等のアシルホスフィンオキサイド系開始剤;その他、キサントン、フルオレノン、カンファーキノン、ベンズアルデヒド、アントラキノン等が挙げられる。これらの光ラジカル重合開始剤は単独又は二種以上組合せて使用できる。これらの光ラジカル重合開始剤の中でも、アルキルフェノン系開始剤、アシルホスフィンオキサイド系開始剤などが好ましい。
(1)硬化膜、積層体
本発明は、前記硬化性組成物を硬化させてなる硬化膜を包含する。該硬化膜は、前記硬化性組成物の硬化物である。本発明の硬化膜は、本発明の硬化性組成物からなるため、表面硬度及び屈曲性に優れている。さらに本発明の硬化膜は、優れた酸素バリア性及び耐反り性も有する。
*は結合手を表し、
Zは、単結合、-O-、-CH2-、-CH2-CH2-、-CH(CH3)-、-C(CH3)2-、-C(CF3)2-、-Ar-、-SO2-、-CO-、-O-Ar-O-、-Ar-CH2-Ar-、-Ar-C(CH3)2-Ar-又は-Ar-SO2-Ar-を表す。Arはフッ素原子で置換されていてもよい炭素数6~20のアリーレン基を表し、具体例としてはフェニレン基が挙げられる。
Z1、Z2及びZ3は、それぞれ独立して、単結合、-O-、-CH2-、-CH2-CH2-、-CH(CH3)-、-C(CH3)2-、-C(CF3)2-、-SO2-又は-CO-を表す。
1つの例は、Z1及びZ3が-O-であり、かつ、Z2が-CH2-、-C(CH3)2-、-C(CF3)2-又は-SO2-である。Z1とZ2との各環に対する結合位置、及び、Z2とZ3との各環に対する結合位置は、それぞれ、各環に対してメタ位又はパラ位であることが好ましい。
Bは、単結合、-O-、-CH2-、-CH2-CH2-、-CH(CH3)-、-C(CH3)2-、-C(CF3)2-、-SO2-、-S-、-CO-又は-NR9-を表し、R9は水素原子、ハロゲン原子で置換されていてもよい炭素数1~12の炭化水素基を表し、
nは0~4の整数であり、
*は結合手を表す]
で表される構成単位であることが好ましい。
で表される構成単位である。式(10)及び(13)中の複数のA及びA3の少なくとも一部が式(4)で表される基であると、積層体は、高い表面硬度を発現できると同時に、高い透明性を有することができる。
で表される構成単位である。式(10)中の複数のGの少なくとも一部が式(5)で表される基であると、積層体は、高い透明性を発現すると同時に、ポリイミド系高分子の溶媒への溶解性を向上し、樹脂ワニスの粘度を低く抑制することができ、また基材フィルムの加工を容易にすることができる。
これらの中でも、好ましくは4,4’-オキシジフタル酸二無水物、3,3’,4,4’-ベンゾフェノンテトラカルボン酸二無水物、2,2’,3,3’-ベンゾフェノンテトラカルボン酸二無水物、3,3’,4,4’-ビフェニルテトラカルボン酸二無水物、2,2’,3,3’-ビフェニルテトラカルボン酸二無水物、3,3’,4,4’-ジフェニルスルホンテトラカルボン酸二無水物、2,2-ビス(3,4-ジカルボキシフェニル)プロパン二無水物、2,2-ビス(2,3-ジカルボキシフェニル)プロパン二無水物、2,2-ビス(3,4-ジカルボキシフェノキシフェニル)プロパン二無水物、4,4’-(ヘキサフルオロイソプロピリデン)ジフタル酸二無水物(6FDA)、1,2-ビス(2,3-ジカルボキシフェニル)エタン二無水物、1,1-ビス(2,3-ジカルボキシフェニル)エタン二無水物、1,2-ビス(3,4-ジカルボキシフェニル)エタン二無水物、1,1-ビス(3,4-ジカルボキシフェニル)エタン二無水物、ビス(3,4-ジカルボキシフェニル)メタン二無水物、ビス(2,3-ジカルボキシフェニル)メタン二無水物、4,4’-(p-フェニレンジオキシ)ジフタル酸二無水物及び4,4’-(m-フェニレンジオキシ)ジフタル酸二無水物が挙げられ、より好ましくは4,4’-オキシジフタル酸二無水物、3,3’,4,4’-ビフェニルテトラカルボン酸二無水物、2,2’,3,3’-ビフェニルテトラカルボン酸二無水物、4,4’-(ヘキサフルオロイソプロピリデン)ジフタル酸二無水物(6FDA)、ビス(3,4-ジカルボキシフェニル)メタン二無水物及び4,4’-(p-フェニレンジオキシ)ジフタル酸二無水物が挙げられる。これらは単独又は2種以上を組合せて使用できる。
(a)前記樹脂を含む液(樹脂ワニスと称する場合がある)を調製する工程(ワニス調製工程)、
(b)樹脂ワニスを支持材に塗布して塗膜を形成する工程(塗布工程)、及び
(c)塗布された液(塗膜)を乾燥させて、基材フィルムを形成する工程(基材フィルム形成工程)
を含む方法によって製造することができる。
本発明の積層体は、例えば、以下の工程:
(d)本発明の硬化性組成物を基材フィルム上に塗布して塗膜を形成する工程(塗膜形成工程)、
(e)塗膜に高エネルギー線を照射し、塗膜を硬化させて硬化膜を形成する工程(硬化工程)
を含む製造方法によって製造することができる。
本発明の積層体は、画像表示装置の前面板、特にフレキシブルディスプレイの前面板(ウィンドウフィルム)として有用である。本発明では、本発明の積層体を含む画像表示装置、特にフレキシブルディスプレイも提供することができる。本実施形態に係るフレキシブルディスプレイは、例えば、フレキシブル機能層と、フレキシブル機能層に積層された本発明の積層体(前面板として機能する)を有する。すなわち、フレキシブルディスプレイの前面板は、フレキシブル機能層の上の視認側に配置される。この前面板は、フレキシブル機能層を保護する機能を有する。
ポリイミドの粉末(「KPI-MX300F(100)」、河村産業(株)製、ポリスチレン換算重量平均分子量(Mw)=280,000)にDMAcを加えて溶解させた後、分散媒がGBLであるシリカゾルを加え、ポリイミドとシリカの質量比が純分ベースで1:1である、ポリイミドワニスを調製した。ポリイミドワニスに占める、ポリイミド樹脂とシリカとの合計質量は17質量%であった。該ポリイミドワニスを流涎成形した後に乾燥させることで、厚み50μmの基材フィルム1を得た。
(シリカゾルAの調整)
ゾル-ゲル法により作製されたBET径(BET法で測定された平均粒子径)が27nmのアモルファスシリカゾルを原料とし、溶媒置換により、GBL置換シリカゾルAを調製した。
窒素ガス雰囲気下、撹拌機を備えた反応容器に、2,2’-ビス(トリフルオロメチル)ベンジジン(TFMB)45質量部及びジメチルアセトアミド(DMAc)768.55質量部を加え、室温で撹拌しながらTFMBをDMAcに溶解させた。次に、反応容器に4,4’-(ヘキサフルオロイソプロピリデン)ジフタル酸二無水物(6FDA)18.92質量部(0.3モル倍[対TFMB])を添加し、室温で3時間撹拌した。その後、4,4’-オキシビス(ベンゾイルクロリド)(OBBC)4.19質量部(0.1モル倍[対TFMB])、次いでテレフタロイルクロリド(TPC)17.29質量部(0.6モル倍[対TFMB])を反応容器に加え、室温で1時間撹拌した。次いで、反応容器に4-メチルピリジン4.63質量部(0.35モル倍[対TFMB])と無水酢酸13.04質量部(0.9モル倍[対TFMB])とを加え、室温で30分間撹拌後、70℃に昇温し、さらに3.5時間撹拌し、反応液を得た。
得られた反応液を室温まで冷却し、大量のメタノール中に糸状に投入し、析出した沈殿物を取り出し、メタノールに6時間浸漬後、メタノールで洗浄した。次に、100℃にて沈殿物の減圧乾燥を行い、ポリアミドイミドAを得た。ポリアミドイミドAの重量平均分子量は、455,000であった。
ポリアミドイミドAをGBLに溶解させたのち、シリカゾルAをポリアミドイミドA:シリカ粒子=60:40(質量比)になるように添加し、ポリアミドイミドワニスAを製造した。ポリアミドイミドワニスA中の固形分濃度は10質量%になるように調製された。
表1及び2に示す成分を秤量後、撹拌することにより硬化性組成物を調製した。製造例1で得られた基材フィルム1に、硬化性組成物をバーコーター塗工し、80℃で3分間乾燥させた後、窒素雰囲気下、UV照射装置[アイグラフィックス社製6KWI灯コンベア]を用いて、以下の硬化条件でUV硬化することにより、基材フィルム1の一方の面に硬化膜が積層された積層体を得た。硬化膜の厚みは9μmであった。なお、表1及び2に示す各配合成分の配合量は、使用した商品が溶剤等を含む場合は、そこに含まれる有効成分の質量部数を示す。
(硬化条件)
光源ランプ:高圧水銀灯
積算光量:500mJ/cm2
ピーク強度:200mW/cm2
なお、積算光量は上記UV照射装置の積層光量計(365nm)を用いて測定した値である。
表3に示す成分を秤量後、撹拌することにより硬化性組成物を調製した。製造例1で得られた基材フィルム1に代えて、製造例2で得られた基材フィルム2を使用し、硬化膜の厚みが16μmとなるように調整したこと以外は、実施例1~25と同様にして、基材フィルム2の一方の面に硬化膜が積層された積層体を得た。硬化膜の厚みは16μmであった。なお、表3に示す各配合成分の配合量は、使用した商品が溶剤等を含む場合は、そこに含まれる有効成分の質量部数を示す。
表3に示す成分を秤量後、撹拌することにより硬化性組成物を調製した。製造例1で得られた基材フィルム1に代えて、製造例2で得られた基材フィルム2を使用したこと以外は、実施例1~25と同様にして、基材フィルム2の一方の面に硬化膜が積層された積層体を得た。硬化膜の厚みは9μmであった。なお、表3に示す各配合成分の配合量は、使用した商品が溶剤等を含む場合は、そこに含まれる有効成分の質量部数を示す。
実施例1~30、及び比較例1で得られた積層体をJIS K 5600-5-4:1999に準拠して硬化膜の表面の鉛筆硬度を測定した。荷重は750gとした。測定結果を表1~3に示す。
実施例1~30、及び比較例1で得られた積層体について、JIS K 5600-5-1:1999に準拠して屈曲試験を行い、以下の評価方法により評価した。評価結果を表1~3に示す。
実施例1~30、及び比較例1で得られた積層体を1cm×8cmにカットして、測定サンプルを得た。硬化膜が外側になる向きで、6mm(半径R=3mm)又は4mm(半径R=2mm)のロールそれぞれに測定サンプルを巻きつける操作を連続10回行った。
硬化膜におけるヒビ割れ(クラック)の発生の有無に基づいて、屈曲性を次のように判定した。判定結果を表1~3に示す。
(屈曲性の判定)
◎…クラックがなく、外観は良好であった。
○…1~4本のクラックが発生した。
△…クラックが5本以上発生した。
実施例1~30、及び比較例1で得られた積層体をJIS K 7126-1(差圧法)に準拠して、GTRテック(株)製、差圧式ガス透過率測定装置「GTR-30AS型」を用いて酸素透過度を測定した。測定結果を表1~3に示す。
実施例1~30、及び比較例1で得られた積層体を3.5cm×4.0cmにカットして、23℃/50%RHの恒温恒湿の条件下、24時間状態調整した後、測定サンプルを得た。測定サンプルを下側が凸側になるように平面上に静置し、平面から測定サンプルの4つの角部までの高さをそれぞれデジタル寸法測定装置LS-7600(KEYENCE社製)を用いて計測し、得られた4点の値の平均値を反り量とした。
<3官能A(アクリレート)モノマー>
トリメチロールプロパントリアクリレート(「A-TMPT」、新中村化学工業(株)製)
<4官能A(アクリレート)モノマー>
ペンタエリスリトールテトラアクリレート(「A-TMMT」、新中村化学工業(株)製)
<6官能A(アクリレート)モノマー>
ジペンタエリスリトールヘキサアクリレート(「A-DPH」、新中村化学工業(株)製)
<8官能A(アクリレート)モノマー>
トリペンタエリスリトールオクタアクリレート(「A-TPE-H-NS」、新中村化学工業(株)製)
3,4-エポキシシクロヘキシルメチル 3,4-エポキシシクロヘキサンカルボキシレート(「セロキサイド(登録商標)2021P」、ダイセル化学(株)製)
3-エチル-3{[(3-エチルオキセタン-3-イル)メトキシ]メチル}オキセタン(「OXT-221」、東亜合成(株)製)
キシリレンビスオキセタンの混合物(キシリレン骨格の繰り返し単位数が1、2又は3の混合物)(「OXT-121」、東亜合成(株)製)
3,4-エポキシシクロヘキシルメチルメタクリレート(「サイクロマー(登録商標)M100」、ダイセル化学(株)製)
シクロヘキサンジメタノールジビニルエーテル(SIGMA-ALDRICH社製)
アクリロイル修飾シリカ粒子(「PGM-AC-2140Y」、日産化学(株)製、粒子径10~15nm)
ヨードニウム(4-メチルフェニル)[4-(2-メチルプロピル)フェニル]-ヘキサフルオロホスフェートとプロピレンカーボネートとの3:1(質量比)の混合物(「IRGACURE(登録商標) 250」、BASFジャパン(株)製)
<ラジカル重合開始剤>
1-ヒドロキシ-シクロヘキシル-フェニル-ケトン(「IRGACURE 184」、BASFジャパン(株)製)
シリコーン系レベリング剤(「BYK(登録商標)-307」、ビックケミー・ジャパン(株)製)
Claims (18)
- 3官能(メタ)アクリレートモノマー、4官能(メタ)アクリレートモノマー及び8官能(メタ)アクリレートモノマーからなる群から選択される少なくとも2種を含む多官能(メタ)アクリレートモノマー(A)と、カチオン重合性モノマー(B)とを含有する硬化性組成物であって、3官能(メタ)アクリレートモノマー、4官能(メタ)アクリレートモノマー及び8官能(メタ)アクリレートモノマーの総質量は、多官能(メタ)アクリレートモノマー(A)100質量部に対して、50質量部以上である、硬化性組成物。
- カチオン重合性モノマー(B)は、1以上のエポキシ基及び/又は1以上のオキセタニル基を有する環状エーテル化合物(B-1)を含む、請求項1に記載の硬化性組成物。
- 環状エーテル化合物(B-1)は、2以上のエポキシ基及び/又は2以上のオキセタニル基を有するビス環状エーテル化合物(B-1-1)を含む、請求項2に記載の硬化性組成物。
- カチオン重合性モノマー(B)はビニルオキシ化合物(B-2)をさらに含む、請求項1~3のいずれかに記載の硬化性組成物。
- 硬化性組成物100質量部に対して、多官能(メタ)アクリレートモノマー(A)の含有量は5~80質量部であり、環状エーテル化合物(B-1)の含有量は5~80質量部であり、ビニルオキシ化合物(B-2)の含有量は3~60質量部である、請求項4に記載の硬化性組成物。
- ビニルオキシ化合物(B-2)の含有量は、多官能(メタ)アクリレートモノマー(A)及びカチオン重合性モノマー(B)の総量100質量部に対して、3~50質量部である、請求項4又は5に記載の硬化性組成物。
- 環状エーテル化合物(B-1)は、1以上のラジカル重合性官能基を有するラジカル重合性環状エーテル化合物(B-1-2)を含む、請求項2~6のいずれかに記載の硬化性組成物。
- 硬化性組成物100質量部に対して、多官能(メタ)アクリレートモノマー(A)の含有量は5~50質量部であり、ビス環状エーテル化合物(B-1-1)の含有量は3~30質量部であり、ラジカル重合性環状エーテル化合物(B-1-2)の含有量は5~40質量部である、請求項7に記載の硬化性組成物。
- ラジカル重合性環状エーテル化合物(B-1-2)の含有量は、ビス環状エーテル化合物(B-1-1)1質量部に対して、0.1~10質量部である、請求項7又は8に記載の硬化性組成物。
- ラジカル重合開始剤(C)及びカチオン重合開始剤(D)をさらに含む、請求項1~9のいずれかに記載の硬化性組成物。
- ラジカル重合開始剤(C)の含有量は、多官能(メタ)アクリレートモノマー(A)100質量部に対して、1~15質量部であり、カチオン重合開始剤(D)の含有量は、カチオン重合性モノマー(B)100質量部に対して、1~15質量部である、請求項10に記載の硬化性組成物。
- 無機粒子をさらに含む、請求項1~11のいずれかに記載の硬化性組成物。
- 無機粒子が反応性シリカ粒子である場合、反応性シリカ粒子の含有量は、硬化性組成物の質量に対して、1~70質量%である、請求項12に記載の硬化性組成物。
- 請求項1~13のいずれかに記載の硬化性組成物を硬化させてなる硬化膜。
- 請求項14に記載の硬化膜が、基材フィルムの少なくとも一方の面に積層された、積層体。
- 基材フィルムはポリイミド系高分子を含んでなる、請求項15に記載の積層体。
- 酸素透過度は、800cc/(m2・24h・atm)以下である、請求項15又は16に記載の積層体。
- 請求項15~17のいずれかに記載の積層体を含む、フレキシブルディスプレイ。
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JP7199790B2 (ja) * | 2021-01-28 | 2023-01-06 | 日東電工株式会社 | 活性エネルギー線硬化型接着剤組成物、積層偏光フィルムおよびその製造方法、積層光学フィルムおよび画像表示装置 |
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JP2002287356A (ja) * | 2001-03-28 | 2002-10-03 | Nippon Paint Co Ltd | フォトソルダーレジスト組成物 |
JP2012047787A (ja) * | 2010-08-24 | 2012-03-08 | Daicel Corp | 体積ホログラム記録用感光性組成物および媒体製造法 |
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CN110669423B (zh) * | 2019-09-23 | 2023-01-24 | 明基材料有限公司 | 高硬度可挠硬涂层膜及显示器 |
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JPWO2019054412A1 (ja) | 2020-11-19 |
TWI786185B (zh) | 2022-12-11 |
KR20200052948A (ko) | 2020-05-15 |
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