WO2013021942A1 - 透明フィルム、透明導電性積層体、並びに、それを用いたタッチパネル、太陽電池及び表示装置 - Google Patents
透明フィルム、透明導電性積層体、並びに、それを用いたタッチパネル、太陽電池及び表示装置 Download PDFInfo
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- WO2013021942A1 WO2013021942A1 PCT/JP2012/069840 JP2012069840W WO2013021942A1 WO 2013021942 A1 WO2013021942 A1 WO 2013021942A1 JP 2012069840 W JP2012069840 W JP 2012069840W WO 2013021942 A1 WO2013021942 A1 WO 2013021942A1
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- Prior art keywords
- general formula
- represented
- group
- polyimide
- spiro
- Prior art date
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- 239000010408 film Substances 0.000 claims abstract description 277
- 229920001721 polyimide Polymers 0.000 claims abstract description 207
- 239000004642 Polyimide Substances 0.000 claims abstract description 191
- 239000000758 substrate Substances 0.000 claims abstract description 149
- 239000010409 thin film Substances 0.000 claims abstract description 53
- 239000012299 nitrogen atmosphere Substances 0.000 claims abstract description 38
- 239000004020 conductor Substances 0.000 claims abstract description 27
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 26
- 125000003118 aryl group Chemical group 0.000 claims abstract description 23
- 230000008859 change Effects 0.000 claims abstract description 18
- 125000001153 fluoro group Chemical group F* 0.000 claims abstract description 15
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 10
- 125000004432 carbon atom Chemical group C* 0.000 claims description 47
- 125000000217 alkyl group Chemical group 0.000 claims description 22
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 12
- 230000000630 rising effect Effects 0.000 claims description 9
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 7
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 4
- 230000009477 glass transition Effects 0.000 abstract description 36
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 111
- 238000000034 method Methods 0.000 description 97
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- 125000006158 tetracarboxylic acid group Chemical group 0.000 description 31
- 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 30
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- 238000000746 purification Methods 0.000 description 25
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- 238000012360 testing method Methods 0.000 description 14
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- 239000010410 layer Substances 0.000 description 13
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 12
- XPAQFJJCWGSXGJ-UHFFFAOYSA-N 4-amino-n-(4-aminophenyl)benzamide Chemical compound C1=CC(N)=CC=C1NC(=O)C1=CC=C(N)C=C1 XPAQFJJCWGSXGJ-UHFFFAOYSA-N 0.000 description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 12
- 235000019253 formic acid Nutrition 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 12
- 235000011054 acetic acid Nutrition 0.000 description 11
- 238000005886 esterification reaction Methods 0.000 description 11
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- 239000003377 acid catalyst Substances 0.000 description 10
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- 239000003054 catalyst Substances 0.000 description 10
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- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
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- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 9
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- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
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- 238000011282 treatment Methods 0.000 description 8
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- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- NUIURNJTPRWVAP-UHFFFAOYSA-N 3,3'-Dimethylbenzidine Chemical compound C1=C(N)C(C)=CC(C=2C=C(C)C(N)=CC=2)=C1 NUIURNJTPRWVAP-UHFFFAOYSA-N 0.000 description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical class O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 6
- 238000013007 heat curing Methods 0.000 description 6
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- 239000007800 oxidant agent Substances 0.000 description 6
- 238000010992 reflux Methods 0.000 description 6
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 6
- 239000011787 zinc oxide Substances 0.000 description 6
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 5
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- 125000001931 aliphatic group Chemical group 0.000 description 4
- 125000003710 aryl alkyl group Chemical group 0.000 description 4
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- 238000004040 coloring Methods 0.000 description 4
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 4
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- ANSXAPJVJOKRDJ-UHFFFAOYSA-N furo[3,4-f][2]benzofuran-1,3,5,7-tetrone Chemical compound C1=C2C(=O)OC(=O)C2=CC2=C1C(=O)OC2=O ANSXAPJVJOKRDJ-UHFFFAOYSA-N 0.000 description 4
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- 230000004888 barrier function Effects 0.000 description 3
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- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 3
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- 239000002243 precursor Substances 0.000 description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 238000001953 recrystallisation Methods 0.000 description 3
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- 125000001424 substituent group Chemical group 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- 238000005809 transesterification reaction Methods 0.000 description 3
- OISVCGZHLKNMSJ-UHFFFAOYSA-N 2,6-dimethylpyridine Chemical compound CC1=CC=CC(C)=N1 OISVCGZHLKNMSJ-UHFFFAOYSA-N 0.000 description 2
- 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 2
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- NDXGRHCEHPFUSU-UHFFFAOYSA-N 3-(3-aminophenyl)aniline Chemical group NC1=CC=CC(C=2C=C(N)C=CC=2)=C1 NDXGRHCEHPFUSU-UHFFFAOYSA-N 0.000 description 2
- UJBOOUHRTQVGRU-UHFFFAOYSA-N 3-methylcyclohexan-1-one Chemical compound CC1CCCC(=O)C1 UJBOOUHRTQVGRU-UHFFFAOYSA-N 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- KWOIWTRRPFHBSI-UHFFFAOYSA-N 4-[2-[3-[2-(4-aminophenyl)propan-2-yl]phenyl]propan-2-yl]aniline Chemical compound C=1C=CC(C(C)(C)C=2C=CC(N)=CC=2)=CC=1C(C)(C)C1=CC=C(N)C=C1 KWOIWTRRPFHBSI-UHFFFAOYSA-N 0.000 description 2
- HESXPOICBNWMPI-UHFFFAOYSA-N 4-[2-[4-[2-(4-aminophenyl)propan-2-yl]phenyl]propan-2-yl]aniline Chemical compound C=1C=C(C(C)(C)C=2C=CC(N)=CC=2)C=CC=1C(C)(C)C1=CC=C(N)C=C1 HESXPOICBNWMPI-UHFFFAOYSA-N 0.000 description 2
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- 238000005698 Diels-Alder reaction Methods 0.000 description 2
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- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
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- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 2
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- HFACYLZERDEVSX-UHFFFAOYSA-N benzidine Chemical group C1=CC(N)=CC=C1C1=CC=C(N)C=C1 HFACYLZERDEVSX-UHFFFAOYSA-N 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 229920001429 chelating resin Polymers 0.000 description 2
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- 238000005507 spraying Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- GFYHSKONPJXCDE-UHFFFAOYSA-N sym-collidine Natural products CC1=CN=C(C)C(C)=C1 GFYHSKONPJXCDE-UHFFFAOYSA-N 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 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
- 230000000930 thermomechanical effect Effects 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- HTSABYAWKQAHBT-UHFFFAOYSA-N trans 3-methylcyclohexanol Natural products CC1CCCC(O)C1 HTSABYAWKQAHBT-UHFFFAOYSA-N 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 150000003739 xylenols Chemical class 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022466—Electrodes made of transparent conductive layers, e.g. TCO, ITO layers
-
- 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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- 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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1042—Copolyimides derived from at least two different tetracarboxylic compounds or two different diamino compounds
-
- 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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1046—Polyimides containing oxygen in the form of ether bonds in the main chain
- C08G73/105—Polyimides containing oxygen in the form of ether bonds in the main chain with oxygen only in the diamino moiety
-
- 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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1075—Partially aromatic polyimides
- C08G73/1078—Partially aromatic polyimides wholly aromatic in the diamino moiety
-
- 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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/14—Polyamide-imides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022466—Electrodes made of transparent conductive layers, e.g. TCO, ITO layers
- H01L31/022475—Electrodes made of transparent conductive layers, e.g. TCO, ITO layers composed of indium tin oxide [ITO]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/0248—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
- H01L31/036—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by their crystalline structure or particular orientation of the crystalline planes
- H01L31/0392—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by their crystalline structure or particular orientation of the crystalline planes including thin films deposited on metallic or insulating substrates ; characterised by specific substrate materials or substrate features or by the presence of intermediate layers, e.g. barrier layers, on the substrate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31721—Of polyimide
Definitions
- the present invention relates to a transparent film, a transparent conductive laminate, and a touch panel, a solar cell and a display device using the same.
- a polyimide resin is known as a resin excellent in heat resistance and dimensional stability.
- the wholly aromatic polyimide resin obtained by polycondensation reaction of aromatic tetracarboxylic dianhydride and aromatic diamines can be used under high temperature conditions of 400 ° C. or higher. Since the coefficient of linear expansion (CTE) is 12-32ppm and excellent in dimensional stability, it has been applied to various fields, mainly in the aerospace industry, electronics industry, etc. as films, wire coatings, adhesives, paints, etc. It was.
- Patent Document 1 a transparent conductive thin film is laminated on a substrate film made of an aliphatic polyimide having a repeating unit having an aliphatic group having 4 to 39 carbon atoms.
- a transparent conductive laminate is disclosed.
- the transparent conductive laminate as described in Patent Document 1 is a heating step (for example, liquid crystal) employed in the manufacturing process of a solar cell or a liquid crystal display device when used as an electrode of a solar cell or a liquid crystal display device.
- a thin film made of a transparent conductive material may be cracked due to a process temperature of about 400 ° C. in the process of creating a TFT [Thin Film Transistor].
- the conventional transparent conductive laminate as described in Patent Document 1 is not necessarily sufficiently resistant to an impact (heat shock) due to heat such as heating in the manufacturing process of a solar cell or a liquid crystal display device. It was not necessarily sufficient in terms of thermal shock resistance. Therefore, a polyimide having excellent heat resistance and a sufficiently low linear expansion coefficient, which can be suitably used for a transparent conductive laminate sufficiently excellent in thermal shock resistance and a substrate film of such a transparent conductive laminate.
- the present invention has been made in view of the above-mentioned problems of the prior art, has a sufficiently high thermal shock resistance, and is heated at a high temperature as employed in the manufacturing process of solar cells and liquid crystal display devices. It aims at providing the transparent conductive laminated body which can fully suppress deterioration of quality also on conditions, a touch panel using the same, a solar cell, and a display apparatus. Another object of the present invention is to provide a transparent film made of polyimide having excellent heat resistance and having a sufficiently low linear expansion coefficient, which can be suitably used as a substrate film for the transparent conductive laminate. .
- the inventors of the present invention have a transparent conductive laminate including a substrate film made of polyimide and a thin film made of a conductive material laminated on the substrate film.
- the polyimide contains at least one repeating unit represented by the following general formula (1), has a glass transition temperature of 350 ° C. to 450 ° C., and a temperature rising rate of 5 ° C./min in a nitrogen atmosphere.
- a polyimide having a linear expansion coefficient of 30 ppm / ° C. or less obtained by measuring a change in length in a temperature range of 50 ° C. to 200 ° C.
- the solar cell has a sufficiently high thermal shock resistance.
- quality deterioration can be sufficiently suppressed even under high-temperature heating conditions such as those employed in the manufacturing process of batteries, liquid crystal display devices, etc. Was Tsu.
- the transparent conductive laminate of the present invention comprises a substrate film made of polyimide, and a thin film made of a conductive material laminated on the substrate film,
- the polyimide has the following general formula (1):
- R 1, R 2, R 3 are each independently a hydrogen atom, it represents one selected from the group consisting of alkyl groups and fluorine atoms having 1 to 10 carbon atoms, R 4 is Represents an aryl group having 6 to 40 carbon atoms, and n represents an integer of 0 to 12.
- R 1, R 2, R 3 are each independently a hydrogen atom, it represents one selected from the group consisting of alkyl groups and fluorine atoms having 1 to 10 carbon atoms
- R 4 is Represents an aryl group having 6 to 40 carbon atoms
- n represents an integer of 0 to 12.
- R 4 in the general formula (1) is represented by the following general formulas (2) to (5):
- R 5 represents one selected from the group consisting of a hydrogen atom, a fluorine atom, a methyl group, an ethyl group, and a trifluoromethyl group.
- Q represents a formula: —O—, —S—, —CO—, —CONH—, —C 6 H 4 —, —COO—, —SO 2 —, —C (CF 3 ) 2 —, —C (CH 3 ) 2 —, —CH 2 —, —O—C 6 H 4 —C (CH 3 ) 2 —C 6 H 4 —O—, —O—C 6 H 4 —SO 2 —C 6 H 4 —O—, —C ( CH 3) 2 -C 6 H 4 -C (CH 3) 2 -, - from O-C 6 H 4 -C 6 H 4 -O- and -O-C 6 group represented by H 4 -O- 1 type
- the polyimide is represented by the general formula (1), and R 4 in the formula is a group represented by the general formula (4); And a group represented by the general formula (5), wherein Q is one of groups represented by —CONH—, —COO—, —CO—, —C 6 H 4 —; A repeating unit which is one group selected; Wherein R 4 is a group represented by the general formula (2); and the Q is —O—, —S—, —CH 2 —, — A repeating unit which is one group selected from the group consisting of the group represented by the general formula (5) which is one of the groups represented by O—C 6 H 4 —O—; It is preferable to contain.
- the polyimide is represented by the general formula (1), and R 4 in the formula is a group represented by the general formula (4);
- Q is a group represented by the general formula (5) which is one of the groups represented by —CONH— and —COO—, and a repeating unit which is one group selected from the group consisting of When, In the general formula (5), represented by the general formula (1), and R 4 in the formula is one of the groups represented by Q being —O— or —CH 2 —.
- the touch panel, solar cell, and display device of the present invention each include the transparent conductive laminate of the present invention.
- the transparent film of the present invention has the following general formula (1):
- R 1, R 2, R 3 are each independently a hydrogen atom, it represents one selected from the group consisting of alkyl groups and fluorine atoms having 1 to 10 carbon atoms, R 4 is Represents an aryl group having 6 to 40 carbon atoms, and n represents an integer of 0 to 12.
- Such a transparent film of the present invention can be suitably used for a substrate film or the like provided in the transparent conductive laminate of the present invention.
- the present invention has sufficiently high thermal shock resistance and sufficiently suppresses deterioration of quality even under high-temperature heating conditions such as those employed in the manufacturing process of solar cells and liquid crystal display devices. It is possible to provide a transparent conductive laminate that can be used, and a touch panel, a solar cell, and a display device using the same. In addition, according to the present invention, it is possible to provide a transparent film made of polyimide having excellent heat resistance and having a sufficiently low linear expansion coefficient, which can be suitably used as a substrate film or the like of the transparent conductive laminate. It becomes.
- Norbornane-2-spiro-2′-cyclopentanone-5′-spiro-2 ′′ -norbornane-5,5 ′′, 6,6 ′′ -tetracarboxylic dianhydride obtained in Synthesis Example 1 It is a graph of IR spectrum.
- Norbornane-2-spiro-2′-cyclopentanone-5′-spiro-2 ′′ -norbornane-5,5 ′′, 6,6 ′′ -tetracarboxylic dianhydride obtained in Synthesis Example 1 1 is a graph of 1 H-NMR (DMSO-d 6 ) spectrum.
- Example 1 is a graph of 13 C-NMR (DMSO-d 6 ) spectrum.
- 2 is a graph of IR spectrum of polyimide obtained in Example 1.
- FIG. 3 is a graph of IR spectrum of polyimide obtained in Example 2.
- 4 is a graph of IR spectrum of polyimide obtained in Example 3.
- 6 is a graph of IR spectrum of polyimide obtained in Example 4.
- 6 is a graph of IR spectrum of polyimide obtained in Example 5.
- 4 is a graph of IR spectrum of polyimide obtained in Comparative Example 1.
- the transparent conductive laminate of the present invention comprises a substrate film made of polyimide, and a thin film made of a conductive material laminated on the substrate film,
- the polyimide has the following general formula (1):
- R 1, R 2, R 3 are each independently a hydrogen atom, it represents one selected from the group consisting of alkyl groups and fluorine atoms having 1 to 10 carbon atoms, R 4 is Represents an aryl group having 6 to 40 carbon atoms, and n represents an integer of 0 to 12.
- R 1, R 2, R 3 are each independently a hydrogen atom, it represents one selected from the group consisting of alkyl groups and fluorine atoms having 1 to 10 carbon atoms
- R 4 is Represents an aryl group having 6 to 40 carbon atoms
- n represents an integer of 0 to 12.
- the polyimide according to the present invention contains at least one repeating unit represented by the general formula (1).
- the alkyl group that can be selected as R 1 , R 2 , or R 3 in the general formula (1) is an alkyl group having 1 to 10 carbon atoms. When such carbon number exceeds 10, glass transition temperature will fall and sufficient thermal shock resistance will no longer be obtained for the obtained substrate film. Further, the number of carbon atoms of the alkyl group that can be selected as R 1 , R 2 , or R 3 is preferably 1 to 6 and is preferably 1 to 5 from the viewpoint of easier purification. Is more preferably 1 to 4, particularly preferably 1 to 3. Further, such an alkyl group that can be selected as R 1 , R 2 , or R 3 may be linear or branched. Further, such an alkyl group is more preferably a methyl group or an ethyl group from the viewpoint of ease of purification.
- the glass transition temperature can be more efficiently set to 350 ° C. to 450 ° C. and sufficiently high heat resistance
- a hydrogen atom or an alkyl group having 1 to 10 carbon atoms are preferably independently a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and above all, from the viewpoint of easy availability of raw materials and easier purification.
- a hydrogen atom, a methyl group, an ethyl group, an n-propyl group or an isopropyl group is more preferable, and a hydrogen atom or a methyl group is particularly preferable.
- it is especially preferable that several R ⁇ 1 >, R ⁇ 2 >, R ⁇ 3 > in such a formula is the same from viewpoints, such as the ease of refinement
- the aryl group that can be selected as R 4 in the general formula (1) is an aryl group having 6 to 40 carbon atoms. Further, such a carbon number is preferably 6 to 30, and more preferably 12 to 20. If the number of carbons exceeds the upper limit, the glass transition temperature cannot be set to 350 ° C. to 450 ° C., and sufficient thermal shock resistance tends to be not obtained. It tends to be difficult to form a substrate film because the solubility of the polyimide in the solvent decreases.
- R 4 in the general formula (1) has a sufficiently high glass transition temperature and a sufficiently low linear expansion coefficient, and from the viewpoint of exhibiting these characteristics in a well-balanced manner, the following general formula (2 ) To (5):
- R 5 represents one selected from the group consisting of a hydrogen atom, a fluorine atom, a methyl group, an ethyl group, and a trifluoromethyl group.
- Q represents a formula: —O—, —S—, —CO—, —CONH—, —C 6 H 4 —, —COO—, —SO 2 —, —C (CF 3 ) 2 —, —C (CH 3 ) 2 —, —CH 2 —, —O—C 6 H 4 —C (CH 3 ) 2 —C 6 H 4 —O—, —O—C 6 H 4 —SO 2 —C 6 H 4 —O—, —C ( CH 3) 2 -C 6 H 4 -C (CH 3) 2 -, - from O-C 6 H 4 -C 6 H 4 -O- and -O-C 6 group represented by H 4 -O- 1 type
- R 5 in the general formula (4) is a hydrogen atom, a fluorine atom, a methyl group or an ethyl group from the viewpoint that the glass transition temperature and the linear expansion coefficient are balanced and have a higher level.
- a hydrogen atom is particularly preferable.
- Q in the general formula (5) is a formula: —O—, —S—, —CONH— from the viewpoint of achieving a higher balance between the glass transition temperature and the linear expansion coefficient.
- —COO—, —CO—, —C 6 H 4 —, —CH 2 —, —O—C 6 H 4 —O— are preferred.
- a group represented by —, —COO— or —CH 2 — is more preferred, and a group represented by the formula: —O— or —CONH— is particularly preferred.
- the glass transition temperature can be set to a sufficiently high temperature, and the linear expansion coefficient is a sufficiently low value.
- the group represented by the general formula (4) or (5) is more preferable.
- R 4 is a group represented by the general formula (4) or the general formula (5
- Q is a group represented by —CONH—, —COO—, —CO—, —C 6 H 4 — (more preferably a group represented by —CONH— or —COO—, particularly preferably Is preferably at least one selected from the group represented by —CONH—.
- R 4 from the viewpoint that a higher degree of flexibility (flexibility) can be imparted to the obtained substrate film made of polyimide, a group represented by the general formula (2), or general At least one of the groups represented by the formula (5) and the Q is represented by —O—, —S—, —CH 2 —, —O—C 6 H 4 —O— (more preferably — It is preferably a group that is one of the groups represented by O— and —CH 2 —, more preferably a group represented by —O—.
- n represents an integer of 0 to 12. If the value of n exceeds the upper limit, purification becomes difficult.
- the upper limit of the numerical value range of n in the general formula (1) is more preferably 5 and particularly preferably 3 from the viewpoint of easier purification.
- the lower limit of the numerical value range of n in such General formula (1) is the monomer (For example, tetracarboxylic dianhydride represented by the following General formula (6)) used for manufacture of a polyimide. From the viewpoint of the stability of the raw material, 1 is more preferable, and 2 is particularly preferable.
- n in the general formula (1) is particularly preferably an integer of 2 to 3.
- the polyimide has a sufficiently high glass transition temperature, a sufficiently low linear expansion coefficient, and sufficient flexibility (flexibility) of the obtained substrate film from the viewpoint of having a well-balanced balance at a higher level.
- those containing a plurality of (two or more) repeating units having different types of R 4 are preferred.
- the polyimide containing the plural types of repeating units is represented by the general formula (1), and R 4 in the formula is A group represented by the general formula (4); and one of the groups in which Q is represented by —CONH—, —COO—, —CO—, —C 6 H 4 — (more preferably —CONH A group represented by the above general formula (5) which is a group represented by-or -COO-, particularly preferably a group represented by -CONH-).
- What contains a repeating unit (B) is more preferable.
- R 4 in the general formula (1) is a group represented by the general formula (5) from the viewpoint of easy availability of the monomer at the time of production.
- Q in the formula (5) is one of groups represented by —O—, —CH 2 —, —O—C 6 H 4 —O— (more preferably —O—, —CH More preferably, it is one of the groups represented by 2 —, more preferably a group represented by —O—.
- the content ratio of the repeating unit (A) to the repeating unit (B) is 9: 1 in terms of molar ratio ((A) :( B)). It is preferable that it is ⁇ 6: 4 (more preferably 8: 2 to 7: 3). If the content ratio of the repeating unit (A) is less than the lower limit, it tends to be difficult to obtain a polyimide having a lower linear expansion coefficient. On the other hand, if the content exceeds the upper limit, the flexibility of the obtained substrate film decreases. Tend to. Moreover, when it contains repeating unit (A) and (B), the structure of substituents other than R ⁇ 4 > in the said General formula (1) is the same from a viewpoint that a polyimide can be prepared more efficiently. Is preferred.
- R 4 is a group represented by the general formula (5) and the Q is represented by —CONH—
- the linear expansion coefficient can be lowered at a higher level while having sufficient heat resistance (for example, the linear expansion coefficient is 20 ppm /
- the content ratio of the repeating unit (C) is 60 on the basis of the total amount of the repeating unit represented by the general formula (1) in the polyimide. It is preferably at least mol%, more preferably at least 75 mol%, even more preferably at least 90 mol%, particularly preferably at least 100 mol%.
- the polyimide according to the present invention has a glass transition temperature of 350 ° C. to 450 ° C.
- the glass transition temperature is lower than the lower limit, the thermal shock resistance of the substrate film is not sufficient, and the quality of the transparent conductive laminate is deteriorated (cracked) in the heating process in the manufacturing process of solar cells and liquid crystal display devices.
- the above upper limit is exceeded, a solid film polymerization reaction does not proceed simultaneously with the thermal ring-closing condensation reaction of the polyamic acid when the polyimide is produced, resulting in a brittle film Tend to be.
- the glass transition temperature of the polyimide is more preferably 360 ° C.
- the glass transition temperature of such a polyimide a differential scanning calorimeter (for example, trade name “DSC7020” manufactured by SII Nano Technology Co., Ltd.) is used as a measuring device, and the rate of temperature increase is 10 ° C./min.
- Speed A value obtained by scanning between 30 ° C. and 440 ° C. in a nitrogen atmosphere under a condition of 30 ° C./min can be employed.
- the above-mentioned scanning temperature is changed from 30 degreeC to 470 degreeC, and a glass transition temperature is measured.
- the polyimide according to the present invention has a linear expansion coefficient of 30 ppm / ° C. or less.
- a linear expansion coefficient exceeds the upper limit, sufficient thermal shock resistance cannot be obtained, and a thin film made of a conductive material is cracked in the manufacturing process of a solar cell or a liquid crystal display device, resulting in deterioration of quality. It is difficult to sufficiently suppress this.
- the linear expansion coefficient is more preferably 25 ppm / ° C. or less, and further preferably 20 ppm / ° C. or less.
- the lower limit of the linear expansion coefficient is preferably 5 ppm / ° C., more preferably 10 ppm / ° C.
- thermomechanical analyzer (trade name “TMA8310 made by Rigaku” is used as a measuring device. )
- the glass transition temperature and the linear expansion coefficient of such a polyimide can be changed by appropriately changing the type of R 1 to R 4 in the general formula (1) or the repeating unit represented by the general formula (1). By containing a plurality of types (two or more types), it can be within the above numerical range.
- the polyimide film is stretched (longitudinal stretching, lateral stretching, oblique stretching, press stretching, etc.), the polyamide acid film that is a polyimide precursor is stretched before heat treatment, or the polyamide acid film that is a polyimide precursor is stretched. Even if heat treatment is performed while fixing, the linear expansion coefficient can be finely adjusted within the numerical range.
- such a polyimide preferably has a 5% weight loss temperature of 450 ° C. or more, more preferably 460 to 550 ° C. If such a 5% weight loss temperature is less than the lower limit, sufficient thermal shock resistance tends to be not obtained. On the other hand, if it exceeds the upper limit, it tends to be difficult to produce a polyimide having such characteristics. It is in.
- 5% weight reduction temperature is obtained by gradually heating from room temperature (25 ° C.) while flowing nitrogen gas in a nitrogen gas atmosphere, and measuring the temperature at which the weight of the used sample is reduced by 5%. Can be sought.
- the film after thermal imidization may be difficult to dissolve in a general-purpose organic solvent, so the molecular weight is evaluated using the intrinsic viscosity [ ⁇ ] of the precursor polyamic acid. Measurements can be made.
- the intrinsic viscosity [ ⁇ ] of the polyamic acid is preferably from 0.1 to 8.0, more preferably from 0.1 to 6.0, and more preferably from 0.1 to 3.0. Further preferred is 0.4 to 2.0. When the intrinsic viscosity is less than the lower limit, sufficient thermal shock resistance tends to be difficult to achieve. On the other hand, when the upper limit is exceeded, casting film formation (cast film formation) tends to be difficult.
- Such intrinsic viscosity [ ⁇ ] can be measured as follows.
- a measurement sample (solution) in which N, N-dimethylacetamide is used as a solvent and the polyamic acid is dissolved in the N, N-dimethylacetamide so as to have a concentration of 0.5 g / dL. obtain.
- the viscosity of the measurement sample is measured using a kinematic viscometer under a temperature condition of 30 ° C., and the obtained value is adopted as the intrinsic viscosity [ ⁇ ].
- a kinematic viscometer an automatic viscometer (trade name “VMC-252”) manufactured by Koiso Co., Ltd. is used.
- the repeating unit represented by the said General formula (1) is all repeating units. 50 to 100 mol%, particularly preferably 80 to 100 mol%).
- the other repeating unit may be included in the range which does not impair the effect of this invention.
- limit especially as such another repeating unit What is necessary is just to select suitably and use the other repeating unit derived from a well-known monomer according to a use etc.
- the shape and size of such a substrate film made of polyimide can be appropriately designed according to the application and the like, and the thickness of the substrate film is 1 to 200 ⁇ m, although not particularly limited. It is preferably 5 to 100 ⁇ m. If the thickness of the substrate film is less than the lower limit, the mechanical strength tends to decrease and weaken. On the other hand, if the thickness exceeds the upper limit, film forming tends to be difficult.
- substrate film which consists of such a polyimide from a viewpoint of obtaining a transparent conductive laminated body with higher transparency, a thing with high transparency is preferable, and a total light transmittance is 80% or more (more preferably 85 % Or more, particularly preferably 87% or more) is more preferable.
- a total light transmittance can be easily achieved by appropriately selecting the type of polyimide or the like of the substrate film.
- a value measured using a trade name “Haze Meter NDH-5000” manufactured by Nippon Denshoku Industries Co., Ltd. can be adopted as a measuring device.
- the substrate film made of such a polyimide preferably has a refractive index of 1.50 to 1.70, more preferably 1.55 to 1.65. If the refractive index is less than the lower limit, the refractive index difference between the polyimide and the conductive thin film is large, and the total light transmittance tends to decrease. On the other hand, if the upper limit is exceeded, the polyimide tends to be colored. At the same time, synthesis itself tends to be difficult.
- a refractive index a value measured under a temperature condition of 23 ° C. under a light source of 589 nm using a refractive index measuring device (trade name “NAR-1T SOLID” manufactured by Atago Co., Ltd.) is adopted. be able to.
- R 1 , R 2 and R 3 each independently represents one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 10 carbon atoms and a fluorine atom, and n is 0 Indicates an integer of ⁇ 12.
- Norbornane-2-spiro- ⁇ -cycloalkanone- ⁇ ′-spiro-2 ′′ -norbornane-5,5 ′′, 6,6 ′′ -tetracarboxylic dianhydrides represented by Formula (7):
- R 4 represents an aryl group having 6 to 40 carbon atoms.
- step (I) of preparing a polyamic acid containing at least one repeating unit represented by The step of applying the polyamic acid solution onto a substrate and imidizing the polyamic acid to obtain a substrate film made of polyimide having a repeating unit represented by the general formula (1) (step (II))
- step (II) When, The manufacturing method of the board
- step (I) and step (II) will be described separately.
- step (I) norbornane-2-spiro- ⁇ -cycloalkanone- ⁇ ′-spiro-2 ′′ -norbornane-5,5 ′′ represented by the above general formula (6) is present in the presence of an organic solvent.
- 6,6 ′′ -tetracarboxylic dianhydrides hereinafter simply referred to as “compound represented by general formula (6)” or “tetracarboxylic dianhydrides represented by general formula (6)”
- the aromatic diamine represented by the general formula (7) to prepare a polyamic acid having a repeating unit represented by the general formula (8). It is a process to obtain.
- R 1, R 2, R 3, n in the general formula (6) is similar to the R 1, R 2, R 3 and n in formula (1), the suitable The thing is the same as that of the suitable thing of R ⁇ 1 >, R ⁇ 2 >, R ⁇ 3 > and n in the said General formula (1).
- R 1 , R 2 , R 3 and n in the general formula (6) may be appropriately changed according to the structure of the target polyimide.
- Examples of the tetracarboxylic dianhydrides represented by the general formula (6) include, for example, norbornane-2-spiro- ⁇ -cyclopentanone- ⁇ ′-spiro-2 ′′ -norbornane-5,5.
- tetracarboxylic dianhydrides represented by the general formula (6) one kind may be used alone or two or more kinds may be used in combination depending on the design of the substrate film made of polyimide. May be.
- the glass transition temperature and linear expansion coefficient of the resulting polyimide can be changed within the above numerical range by appropriately changing the type. It is possible to adjust appropriately to the numerical value within.
- a method for producing such tetracarboxylic dianhydrides represented by the general formula (6) will be described later.
- a diamine compound represented by, the R 4 in the formula (7) is the same as the R 4 in the general formula (1)
- the preferred one is the same as the preferred one for R 4 in the general formula (1).
- R 4 in the general formula (7) may be appropriately changed depending on the configuration of the polyimide of interest.
- Examples of the aromatic diamine represented by the general formula (7) include 4,4′-diaminodiphenylmethane, 4,4 ′′ -diamino-p-terphenyl, 3,3′-diaminodiphenylmethane, 4 , 4'-diaminodiphenylethane, 3,3'-diaminodiphenylethane, 4,4'-diaminobiphenyl, 3,3'-diaminobiphenyl, 4,4'-diaminodiphenyl ether, 3,3'-diaminodiphenyl ether, 2 , 2-bis (4-aminophenoxyphenyl) propane, 1,3-bis (4-aminophenoxy) benzene, 1,3-bis (3-aminophenoxy) benzene, bis [4- (4-aminophenoxy) phenyl ] Sulfone, bis [4- (3-aminophenoxy) phenyl] sul
- R 4 of the aromatic diamine represented by the general formula (7) is represented by the general formula (4).
- the aromatic diamine R 4 represented by the general formula (7) is represented by the general formula (2).
- R 4 of the aromatic diamine represented by the general formula (7) is a group in which the Q is represented by —O—, —CH 2 —, —O—C 6 H 4 —O—.
- the glass transition temperature and the linear expansion coefficient are within the above ranges, and the glass transition temperature, the linear expansion coefficient, and the obtained substrate film
- a plurality of (two or more) aromatic diamines having different types of R 4 in the general formula (7) are preferably used in combination.
- R 4 in the general formula (7) is the above general formula (7) as the plural types (two or more types) of aromatic diamines having different types of R 4.
- a group represented by the general formula (5) which is a group represented by —COO—, particularly preferably a group represented by —CONH—, and a fragrance which is one group selected from the group consisting of A group diamine and R 4 in the general formula (7) is a group represented by the general formula (2); and the Q is —O—, —S—, —CH 2 —, —O—C 6.
- H 4 -O- in one (more preferably of the group represented -O -, - CH 2 - with one of the groups represented by More preferably an aromatic diamine which is one group selected from the group consisting of the group represented by the general formula (5) which is a group represented by —O—. More preferred.
- both the tetracarboxylic dianhydrides represented by the said General formula (6) and the aromatic diamine represented by the said General formula (7) are melt
- An organic solvent that can be used is preferable.
- organic solvents examples include N-methyl-2-pyrrolidone, N, N-dimethylacetamide, N, N-dimethylformamide, dimethyl sulfoxide, ⁇ -butyrolactone, propylene carbonate, tetramethylurea, 1,3- Aprotic polar solvents such as dimethyl-2-imidazolidinone, hexamethylphosphoric triamide, pyridine; phenol solvents such as m-cresol, xylenol, phenol, halogenated phenol; tetrahydrofuran, dioxane, cellosolve, glyme And ether solvents such as benzene, toluene, xylene, 2-chloro-4-hydroxytoluene and the like. Such organic solvents may be used alone or in combination of two or more.
- the use ratio of the tetracarboxylic dianhydride represented by the said General formula (6) and the aromatic diamine represented by the said General formula (7) is the said General formula ( 7)
- the acid anhydride group of the tetracarboxylic dianhydrides represented by the general formula (6) is 0.2 to 2 equivalents relative to 1 equivalent of the amino group of the aromatic diamine represented by 7). It is preferable that the amount be 0.3 to 1.2 equivalents. When such a use ratio is less than the lower limit, the polymerization reaction does not proceed efficiently and a high molecular weight polyamic acid tends to be not obtained. There is no tendency.
- the total amount of the aromatic diamine represented by the tetracarboxylic dianhydrides represented by the said General formula (6) and the said General formula (7) is mentioned.
- the amount is preferably 0.1 to 50% by mass (more preferably 10 to 30% by mass) with respect to the total amount of the reaction solution. If the amount of the organic solvent used is less than the lower limit, the polyamic acid tends not to be obtained efficiently. On the other hand, if it exceeds the upper limit, stirring tends to be difficult due to the increase in viscosity.
- the reaction rate is improved when the tetracarboxylic dianhydride represented by the general formula (6) is reacted with the aromatic diamine represented by the general formula (7).
- a basic compound may be further added to the organic solvent. Examples of such basic compounds include, but are not limited to, triethylamine, tetrabutylamine, tetrahexylamine, 1,8-diazabicyclo [5.4.0] -undecene-7, pyridine, isoquinoline, N-methylpiperidine, ⁇ -picoline and the like can be mentioned.
- the amount of such a basic compound used is preferably 0.001 to 10 equivalents relative to 1 equivalent of the tetracarboxylic dianhydrides represented by the general formula (6), It is more preferable that the amount be 0.1 equivalent. If the amount of such a basic compound used is less than the lower limit, the effect of addition tends not to be seen. On the other hand, if the amount exceeds the upper limit, coloring tends to be caused.
- the reaction temperature when the tetracarboxylic dianhydride represented by the general formula (6) is reacted with the aromatic diamine represented by the general formula (7) is as follows.
- the temperature may be appropriately adjusted to a temperature at which the compound can be reacted, and is not particularly limited, but is preferably 80 ° C. or less, and preferably ⁇ 30 to 30 ° C.
- a method of reacting the tetracarboxylic dianhydride represented by the above general formula (6) and the aromatic diamine represented by the above general formula (7) that can be employed in such step (I).
- Can appropriately utilize a method capable of performing a polymerization reaction of tetracarboxylic dianhydride and aromatic diamine and is not particularly limited.
- a method capable of performing a polymerization reaction of tetracarboxylic dianhydride and aromatic diamine is not particularly limited.
- the tetracarboxylic dianhydride represented by the general formula (6) is added at the reaction temperature, and then reacted for 10 to 48 hours. May be. If the reaction temperature or reaction time is less than the lower limit, it tends to be difficult to react sufficiently.
- the upper limit is exceeded, the mixing probability of substances (such as oxygen) that degrade the polymer increases, and the molecular weight increases. It tends to decrease.
- the general formula (8) Polyamic acid having at least one repeating unit represented can be obtained.
- the polyamic acid having the repeating unit represented by the above general formula (8) thus obtained is isolated and then dissolved again in a solvent (for example, the organic solvent etc.). It may be a solution of the polyamic acid used in II), or may be represented by the general formula (6) in an organic solvent without isolating the polyamic acid having the repeating unit represented by the general formula (8).
- Reaction solution obtained by reacting tetracarboxylic dianhydrides with an aromatic diamine represented by the above general formula (7) (polyamic acid having a repeating unit represented by the above general formula (8) It is good also as a solution of the polyamic acid used for process (II) as it is.
- polyamic acid which has a repeating unit represented by the said General formula (8) from the said reaction liquid it does not restrict
- Such known methods can be adopted as appropriate, and for example, a method of isolating as a reprecipitate may be adopted.
- R 1 in the general formula (8), R 2, R 3, R 4 and n are of the general formula (1) in the same manner as R 1, R 2, R 3 , R 4 and n
- the preferred ones are also the same as R 1 , R 2 , R 3 , R 4 and n in the general formula (1).
- the polyamic acid having a repeating unit represented by the general formula (8) preferably has an intrinsic viscosity [ ⁇ ] of 0.1 to 8.0, preferably 0.1 to 6.0. More preferably, it is more preferably 0.1 to 3.0 dL / g, and particularly preferably 0.4 to 2.0 dL / g.
- the intrinsic viscosity [ ⁇ ] is smaller than 0.1 dL / g, when a film-like polyimide is produced using the intrinsic viscosity [ ⁇ ], the resulting film tends to become brittle, while 8.0 dL / g is reduced.
- Such intrinsic viscosity [ ⁇ ] can be measured as follows. That is, first, a measurement sample (solution) in which N, N-dimethylacetamide is used as a solvent and the polyamic acid is dissolved in the N, N-dimethylacetamide so as to have a concentration of 0.5 g / dL. obtain. Next, using the measurement sample, the viscosity of the measurement sample is measured using a kinematic viscometer under a temperature condition of 30 ° C., and the obtained value is adopted as the intrinsic viscosity [ ⁇ ]. As such a kinematic viscometer, an automatic viscometer (trade name “VMC-252”) manufactured by Koiso Co., Ltd. is used.
- the general formula You may employ
- the method using the diamine compound may be employed, and furthermore, both of these methods may be employed.
- tetracarboxylic dianhydrides other than the tetracarboxylic dianhydrides represented by the above general formula (6) include butanetetracarboxylic dianhydride and 1,2,3,4-cyclobutane.
- the well-known diamine compound which can be used for manufacture of a polyimide or a polyamic acid can be used suitably, for example, aliphatic diamine, An alicyclic diamine or the like can be used as appropriate.
- aliphatic diamines include ethylene diamine, propylene diamine, trimethylene diamine, tetramethylene diamine, hexamethylene diamine, and polyoxyalkylene diamine.
- Examples of the alicyclic diamine include 4,4′-diamino-dicyclohexylmethane, 3,3′-dimethyl-4,4′-diamino-dicyclohexylmethane, and 3,3′-diethyl-4,4′-.
- a method for producing tetracarboxylic dianhydrides represented by the general formula (6) used in the step (I) will be described.
- the method for producing such tetracarboxylic dianhydrides represented by the general formula (6) is not particularly limited, and for example, the following general formula (9):
- R 1 , R 2 , R 3 each independently represents one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 10 carbon atoms and a fluorine atom; An integer from 0 to 12 is shown.
- 5-norbornene-2-spiro- ⁇ -cycloalkanone- ⁇ ′-spiro-2 ′′ -5 ′′ -norbornenes represented by the formula (hereinafter referred to simply as “compound represented by the general formula (9)”)
- compound represented by the general formula (9) By using a known method or the like as appropriate to form a tetracarboxylic dianhydride, thereby obtaining a tetracarboxylic dianhydride represented by the above general formula (6). Also good.
- the method for converting the compound represented by the general formula (9) into a tetracarboxylic dianhydride is not particularly limited, and a known method can be appropriately used.
- Macromolecules (Vol. 27, published in 1994) ) May be employed as described on page 1117. That is, as a method for making such a tetracarboxylic dianhydride, the compound represented by the above general formula (9) is prepared by adding carbon monoxide and methanol in the presence of a Pd catalyst, copper (II) chloride and sodium acetate.
- the resulting tetramethyl ester was subjected to a transesterification reaction with formic acid in the presence of an acid catalyst such as p-toluenesulfonic acid to obtain a tetracarboxylic acid, and then into the reaction system of this transesterification reaction.
- an acid catalyst such as p-toluenesulfonic acid
- a method in which acetic anhydride is allowed to coexist and the tetracarboxylic acid is converted to tetracarboxylic dianhydride with acetic anhydride may be employed.
- thermal dehydration is performed in a sublimation purification apparatus under vacuum conditions. You may employ
- R 1 , R 2 and R 3 each independently represents one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 10 carbon atoms and a fluorine atom
- R 6 , R 7 , R 8 and R 9 are each independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or 6 to 20 carbon atoms.
- n represents an integer of 0 to 12.
- R 1 in the general formula (9) in, R 2, R 3, n is R 1 in the general formula (6), R 2, R 3, n and are those same, is the same as the preferred ones also R 1 in the general formula (6), R 2, R 3, n.
- Examples of the compound represented by the general formula (9) include 5-norbornene-2-spiro- ⁇ -cyclopentanone- ⁇ ′-spiro-2 ′′ -5 ′′ -norbornene (also known as “5” -Norbornene-2-spiro-2'-cyclopentanone-5'-spiro-2 "-5 ''-norbornene”), methyl-5-norbornene-2-spiro- ⁇ -cyclopentanone- ⁇ '- Spiro-2 ′′-(methyl-5 ′′ -norbornene), 5-norbornene-2-spiro- ⁇ -cyclohexanone- ⁇ ′-spiro-2 ′′ -5 ′′ -norbornene (also known as “5-norbornene-2” -Spiro-2'-cyclohexanone-6'-spiro-2 "-5 ''-norbornene”), methyl-5-norbornene-2-spiro- ⁇ -cyclohe
- R 1, R 2, R 3, n in the general formula (10) in the, R 1 in the general formula (6), R 2, R 3 and n, and the preferred ones are also the same as R 1 , R 2 , R 3 and n in the general formula (6).
- the alkyl group that can be selected as R 6 , R 7 , R 8 , or R 9 in the general formula (10) is an alkyl having 1 to 10 carbon atoms. It is a group. When the carbon number of such an alkyl group exceeds 10, purification becomes difficult.
- the number of carbon atoms of the alkyl group that can be selected as R 6 , R 7 , R 8 , or R 9 is more preferably 1 to 5 from the viewpoint of easier purification. 3 is more preferable.
- such an alkyl group that can be selected as R 6 , R 7 , R 8 , and R 9 may be linear or branched.
- the cycloalkyl group that can be selected as R 6 , R 7 , R 8 , R 9 in the general formula (10) is a cycloalkyl group having 3 to 10 carbon atoms. If the number of carbon atoms in such a cycloalkyl group exceeds 10, purification becomes difficult.
- the number of carbon atoms of the cycloalkyl group that can be selected as R 6 , R 7 , R 8 , or R 9 is more preferably 3 to 8 from the viewpoint of easier purification. More preferably, it is .about.6.
- the alkenyl group that can be selected as R 6 , R 7 , R 8 , R 9 in the general formula (10) is an alkenyl group having 2 to 10 carbon atoms.
- the carbon number of such an alkenyl group exceeds 10, purification becomes difficult.
- the number of carbon atoms of the alkenyl group that can be selected as R 6 , R 7 , R 8 , R 9 is more preferably 2 to 5 from the viewpoint of easier purification. 3 is more preferable.
- the aryl group that can be selected as R 6 , R 7 , R 8 , R 9 in the general formula (10) is an aryl group having 6 to 20 carbon atoms. If the number of carbon atoms in such an aryl group exceeds 20, purification becomes difficult. Further, the number of carbon atoms of the aryl group that can be selected as R 6 , R 7 , R 8 , or R 9 is more preferably 6 to 10 from the viewpoint of easier purification. More preferably, it is 8.
- the aralkyl group that can be selected as R 6 , R 7 , R 8 , R 9 in the general formula (10) is an aralkyl group having 7 to 20 carbon atoms. If the number of carbon atoms in such an aralkyl group exceeds 20, purification becomes difficult.
- the number of carbon atoms of the aralkyl group that can be selected as R 6 , R 7 , R 8 , R 9 is more preferably 7-10, from the viewpoint of easier purification. More preferably, it is 9.
- R 6 , R 7 , R 8 , and R 9 in the general formula (10) are each independently a hydrogen atom, a methyl group, an ethyl group, or n-propyl, from the viewpoint of easier purification.
- R 6 , R 7 , R 8 and R 9 may be the same or different, but from the viewpoint of synthesis, they may be the same. More preferred.
- Examples of the compound represented by the general formula (10) include norbornane-2-spiro- ⁇ -cyclopentanone- ⁇ ′-spiro-2 ′′ -norbornane-5,5 ′′, 6,6 '' -Tetracarboxylic acid tetramethyl ester, norbornane-2-spiro- ⁇ -cyclopentanone- ⁇ '-spiro-2 ''-norbornane-5,5 '', 6,6 ''-tetracarboxylic acid tetraethyl ester Norbornane-2-spiro- ⁇ -cyclopentanone- ⁇ ′-spiro-2 ′′ -norbornane-5,5 ′′, 6,6 ′′ -tetracarboxylic acid tetrapropyl ester, norbornane-2-spiro- ⁇ -Cyclopentanone- ⁇ '-spiro-2 "-norbornane-5,5", 6,6 "-tetracarboxylic
- R 1, R 2, R 3, n has the same meaning as R 1, R 2, R 3, n in the general formula (6), form an amine each R is independently A monovalent organic group (for example, a straight-chain saturated hydrocarbon group having 1 to 20 carbon atoms, etc.), and X ⁇ represents a monovalent ion (for example, a halogen ion, which can form an ammonium salt with an amine). Hydrogen sulfate ion, acetate ion, etc.).
- a method for producing a compound represented by the general formula (9) can be employed by utilizing a reaction represented by Such a method represented by the reaction formula (I) includes a cycloalkanone represented by the general formula (I-1) (cyclopentanone, cyclohexanone, etc.) and 2 equivalents or more of the cycloalkanone.
- Ammonium salts of secondary amines eg hydrochlorides, sulfates, acetates, etc .: compounds represented by the formula: NHR 2 HX in reaction formula (I)), formaldehyde derivatives, acids (hydrochloric acid, sulfuric acid, acetic acid, etc.)
- the reaction solution is heated at 30 to 180 ° C.
- the reaction solution may be an organic solvent (any organic solvent that can be used for Diels-Alder reaction, preferably tetrahydrofuran, methanol, ethanol, isopropanol, butanol, acetonitrile, methyl cellosolve, ethyl cellosolve).
- organic solvent any organic solvent that can be used for Diels-Alder reaction, preferably tetrahydrofuran, methanol, ethanol, isopropanol, butanol, acetonitrile, methyl cellosolve, ethyl cellosolve).
- An organic solvent such as ethylene glycol, propylene glycol monomethyl ether, and propylene glycol) and a cyclopentadiene (which may have a substituent similar to the group that can be selected as R 1 in the general formula (6) ( 2 equivalents or more with respect to the Mannich base) is added to make a mixture, and then a base is introduced into the mixture to make it neutral or basic, under conditions of 0 to 150 ° C. (preferably about 60 ° C.). The mixture is stirred in the mixture for 0.1 to 48 hours.
- the divinyl ketone represented by the general formula (I-3) is synthesized by desorbing an amine compound from the Mannich base during stirring of the mixture at 0 to 150 ° C.
- Examples of the cycloalkanone represented by the general formula (I-1) in the reaction formula (I) include cyclopropanone, cyclobutanone, cyclopentanone, cyclohexanone, cycloheptanone, and cyclooctanone.
- Examples of the secondary amine ammonium salt include dimethylamine, diethylamine, di-n-propylamine, diisopropylamine, di-n-butylamine, diisobutylamine, di-sec-butylamine, di-t-butylamine, Dipentylamine, dicyclopentylamine, dihexylamine, dicyclohexylamine, diheptylamine, dioctylamine, di (2-ethylhexyl) amine, dinonylamine, didecylamine, diundecylamine, didodecylamine, ditridecylamine, ditetradecylamine, di Pentadecylamine, dihexadecylamine, diheptadecylamine, dioctadecylamine, dinonadecylamine, morpholine, diethanolamine, aziridine, azetidine, pyrrolidine, pipet
- X ⁇ is a so-called counter anion, for example, F ⁇ , Cl ⁇ , Br ⁇ , I ⁇ , CH 3 COO ⁇ , CF 3 COO ⁇ , CH 3 SO 3 ⁇ , CF 3 SO 3 ⁇ , C 6 H 5 SO 3 ⁇ , CH 3 C 6 H 4 SO 3 ⁇ , HOSO 3 ⁇ and H 2 PO 4 — and the like can be mentioned.
- the divinyl ketone is synthesized by desorbing an amine compound from the Mannich base during stirring of the mixture at 0 to 150 ° C.
- R 10 OH (11) [In formula (11), R 10 is other than a hydrogen atom among atoms and groups that can be selected as R 6 , R 7 , R 8, or R 9 in general formula (10). ] It is preferable that it is alcohol represented by these.
- Specific examples of such alcohols include methanol, ethanol, butanol, allyl alcohol, cyclohexanol, benzyl alcohol, etc. Among them, methanol and ethanol are preferred from the viewpoint that purification of the resulting compound is easier. Is more preferable, and methanol is particularly preferable.
- Such alcohols may be used alone or in combination of two or more.
- ester group represented by the above formula (the ester group may have the same or different R 10 at each introduced position), and norbornane-2 represented by the general formula (10) -Spiro- ⁇ -cycloalkanone- ⁇ '-spiro-2 ′′ -norbornane-5,5 ′′, 6,6 ′′ -reaction to obtain tetracarboxylic acid esters (esterification reaction).
- the amount of alcohol used in such esterification reaction is not particularly limited as long as it is an amount capable of obtaining the compound represented by the general formula (10).
- the alcohol may be added to a theoretically necessary amount (theoretical amount) for obtaining the compound represented, and the excess alcohol may be used as a solvent as it is.
- the required amount of carbon monoxide can be supplied to the reaction system. Therefore, it is not necessary to use a high-purity gas of carbon monoxide as the gas for supplying the carbon monoxide, and a mixture in which a gas inert to the esterification reaction (for example, nitrogen) and carbon monoxide is mixed. Gas may be used, and further, synthesis gas, coal gas, or the like may be used. Further, the pressure of such carbon monoxide is not particularly limited, but is preferably normal pressure (about 0.1 MPa [1 atm]) or more and 10 MPa or less.
- the palladium catalyst used in the first step is not particularly limited, and a known catalyst containing palladium can be appropriately used.
- a known catalyst containing palladium can be appropriately used.
- Specific examples of such a palladium catalyst include palladium chloride, palladium nitrate, palladium sulfate, palladium acetate, palladium acetate trimer, palladium propionate, palladium carbon, palladium alumina, palladium black, and Pd having various ligands. Complex etc. are mentioned.
- the amount of the palladium catalyst used is such that the molar amount of palladium in the palladium catalyst is 0.001 to 0.1 times the molar amount of the compound represented by the general formula (9). Is preferred.
- the Pd 0 can be oxidized to Pd 2+.
- Any material can be used without particular limitation, and examples thereof include copper compounds, iron compounds, oxygen, air, and hydrogen peroxide.
- Specific examples of such oxidizing agents include cupric chloride, cupric nitrate, cupric sulfate, cupric acetate, ferric chloride, ferric nitrate, ferric sulfate, and acetic acid ferrous. Examples include ferric iron, manganese dioxide, and manganese acetate.
- Such an oxidizing agent is used in an amount of 5-norbornene-2-spiro- ⁇ -cycloalkanone- ⁇ ′-spiro-2 ′′ -5 ′′ -norbornene represented by the general formula (9). It is preferably 2 to 16 times mol (more preferably about 8 times mol).
- a solvent for the reaction (esterification reaction) of the compound represented by the general formula (9) with alcohol and carbon monoxide is not particularly limited, and examples thereof include hydrocarbon solvents such as n-hexane, cyclohexane, heptane, pentane, and toluene.
- a base may be added to remove the acid.
- fatty acid salts such as sodium acetate, sodium propionate and sodium butyrate are preferable.
- the amount of such base used may be appropriately adjusted according to the amount of acid generated.
- the reaction temperature conditions for the esterification reaction are not particularly limited, but are preferably 0 ° C. to 100 ° C. (more preferably about room temperature (25 ° C.)). When the reaction temperature exceeds the upper limit, the yield tends to decrease, and when the reaction temperature is lower than the lower limit, the reaction rate tends to decrease.
- the reaction time for the esterification reaction is not particularly limited, but is preferably about 30 minutes to 24 hours.
- R 6 , R 7 , R 8 or R 9 in the general formula (10) a hydrogen atom
- Decomposition treatment or transesterification with carboxylic acid may be performed.
- the method for such a reaction is not particularly limited, and a known method in which the group represented by the formula: —COOR 10 can be changed to the formula: —COOH can be appropriately employed.
- a purification step such as recrystallization may be appropriately performed in order to obtain a compound with higher purity.
- a purification method is not particularly limited, and a known method can be appropriately employed.
- the norbornane-2-spiro- ⁇ -cycloalkanone- ⁇ ′-spiro-2 ′′ -norbornane-5 of the present invention represented by the general formula (10) is represented. 5 ′′, 6,6 ′′ -tetracarboxylic acid esters can be obtained efficiently.
- the second step of the method (A) for producing the tetracarboxylic dianhydrides will be described.
- the norbornane-2-spiro- ⁇ -cycloalkanone- ⁇ ′-spiro is obtained using a lower carboxylic acid (formic acid, acetic acid, propionic acid, etc.), an acid catalyst, and acetic anhydride.
- the acid catalyst used in the second step is not particularly limited, but from the viewpoint of acid strength, p-toluenesulfonic acid, benzenesulfonic acid, hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, methanesulfonic acid, trifluoroacetic acid, Amberlist and amberlite are preferable, and p-toluenesulfonic acid is more preferable.
- the amount of the acid catalyst used in the second step is preferably 0.01 to 0.2 times mol with respect to the compound represented by the general formula (10). When the amount of the acid catalyst used is less than the lower limit, the reaction rate tends to decrease. On the other hand, when the amount exceeds the upper limit, the yield tends to decrease.
- the amount of the lower carboxylic acid (for example, formic acid, acetic acid, propionic acid) used in the second step is not particularly limited, but is 4 to 100 times mol with respect to the compound represented by the general formula (10). It is preferable to do. If the amount of such a lower carboxylic acid (formic acid, acetic acid, propionic acid, etc.) used is less than the lower limit, the reaction rate tends to decrease, whereas if it exceeds the upper limit, the yield tends to decrease.
- the amount of acetic anhydride used in the second step is not particularly limited, but it is preferably 4 to 100 times mol with respect to the compound represented by the general formula (10).
- the amount of acetic anhydride used is less than the lower limit, the reaction rate tends to decrease, and when it exceeds the upper limit, the yield tends to decrease.
- the second step is not particularly limited, but preferably includes the following steps (A) to (C), for example. That is, as such a second step, a mixed solution of the compound represented by the general formula (10), a lower carboxylic acid (formic acid, acetic acid, propionic acid, etc.) and an acid catalyst is prepared, and the mixed solution is Heating and refluxing step (A), part of the liquid in the mixed solution is distilled off under reduced pressure to concentrate the mixed solution, and a lower carboxylic acid (formic acid or the like) is added again to the obtained concentrated solution and heated.
- a mixed solution of the compound represented by the general formula (10), a lower carboxylic acid (formic acid, acetic acid, propionic acid, etc.) and an acid catalyst is prepared, and the mixed solution is Heating and refluxing step (A), part of the liquid in the mixed solution is distilled off under reduced pressure to concentrate the mixed solution, and a lower carboxylic acid (formic acid or the like) is added again to the obtained concentrated solution and heated.
- the compound represented by the general formula (6) can be obtained from the compound represented by the general formula (10) more efficiently.
- step (B) the step of adding and concentrating lower carboxylic acid such as formic acid, acetic acid and propionic acid to the concentrated solution in step (B) is repeated (preferably 1 to 5). It is preferable to carry out the process repeatedly, or alternatively, in the step (B), after the produced carboxylic acid methyl ester and water are distilled off together with the lower carboxylic acid, the reduced amount of the lower carboxylic acid is continuously added. Is preferred.
- R 6 , R 7 , R in the general formula (10) are repeatedly carried out by repeatedly adding and concentrating lower carboxylic acid such as formic acid, acetic acid, propionic acid to the concentrated solution.
- the step (C) to be carried out thereafter can be more efficiently represented by the general formula (6). It becomes possible to obtain the compound to be obtained.
- the amount of the lower carboxylic acid (formic acid, acetic acid, propionic acid, etc.) used in the production of the mixed solution in the step (A) is about 50 times mol with respect to the compound represented by the general formula (10). It is preferable that Moreover, it is preferable that the amount of the lower carboxylic acid (formic acid or the like) added to the concentrate in the steps (B) and (C) is approximately the same as the amount of the liquid distilled off during the concentration.
- the method for concentrating (depressurizing distillation) of the mixed solution in the step (B) is not particularly limited, and a known method can be appropriately employed.
- the temperature condition for heating and refluxing in the steps (A) to (C) is preferably 100 ° C. to 180 ° C., more preferably 100 ° C. to 140 ° C.
- the heating reflux temperature is less than the lower limit, the yield tends to decrease.
- the upper limit is exceeded, by-products increase and coloring tends to decrease and the transparency tends to decrease.
- the heating and refluxing time is preferably about 30 minutes to 24 hours.
- the norbornane-2-spiro- ⁇ -cycloalkanone- ⁇ ′-spiro-2 ′′ -norbornane-5 of the present invention represented by the general formula (6) is represented. , 5 ′′, 6,6 ′′ -tetracarboxylic dianhydrides can be obtained in high yield.
- the norbornane-- represented by the general formula (10) is obtained by carrying out the first step.
- 2-spiro- ⁇ -cycloalkanone- ⁇ ′-spiro-2 ′′ -norbornane-5,5 ′′, 6,6 ′′ -tetracarboxylic acid esters such norbornane-2-spiro- ⁇ -cycloalkanone- ⁇ ′-spiro-2 ′′ -norbornane-5,5 ′′, 6,6 ′′ -tetracarboxylic acid ester is hydrolyzed in the presence of an acid catalyst or a base catalyst to give norbornane -2-Spiro- ⁇ -cycloalkanone- ⁇ ′-spiro-2 ′′ -norbornane-5,5 ′′, 6,6 ′′ -tetracarboxylic acid was prepared, and the resulting norbornane-2- Spir
- step (II) a polyamic acid solution having the repeating unit represented by the general formula (8) obtained in the step (I) is applied onto a substrate, and then the polyamic acid is imidized, This is a step (step (II)) of obtaining a substrate film made of polyimide having a repeating unit represented by the general formula (1).
- the base material for applying such a polyamic acid solution is not particularly limited, and can be used for forming a substrate film made of a polymer, depending on the shape of the substrate film made of polyimide and the like.
- a base material for example, a glass plate or a metal plate
- made of a known material can be used as appropriate.
- the method for applying the polyamic acid solution on the substrate is not particularly limited, and examples thereof include spin coating, spray coating, dip coating, dropping, gravure printing, screen printing, and relief printing.
- Known methods such as a method, a die coating method, a curtain coating method, and an ink jet method can be appropriately employed.
- the thickness of the polyamic acid coating film formed on the substrate is preferably 1 to 200 ⁇ m, more preferably 5 to 100 ⁇ m after drying. If the thickness is less than the lower limit, the mechanical strength tends to decrease and weaken, whereas if the thickness exceeds the upper limit, film forming tends to be difficult.
- the temperature condition in such a drying treatment method is preferably 0 to 100 ° C., more preferably 20 to 80 ° C. If the temperature condition in such a drying process is less than the lower limit, the solvent tends not to be dried. On the other hand, if the temperature condition exceeds the upper limit, the solvent tends to boil and form a film containing bubbles and voids.
- the atmosphere in such a drying treatment method is preferably an inert gas atmosphere (for example, a nitrogen atmosphere).
- the pressure condition in such a drying process is preferably 1 to 200 mmHg.
- the imidization method of the polyamic acid is not particularly limited as long as it can imidize the polyamic acid, and a known method can be appropriately employed.
- the general formula (8) It is preferable to employ a method of imidizing by performing a dehydration reaction by performing a heat treatment on the polyamic acid having a repeating unit represented by) or a method of imidizing using a so-called “imidizing agent”. .
- an organic solvent is used without isolating the polyamic acid having the repeating unit represented by the general formula (8).
- the reaction solution obtained by reacting the tetracarboxylic dianhydride represented by the general formula (6) and the aromatic diamine represented by the general formula (7) (the general formula (8)
- the reaction solution containing the polyamic acid having a repeating unit represented by the above is used as the polyamic acid solution as it is, and the polyamic acid solution (reaction solution) is subjected to the drying treatment as described above to remove the solvent.
- a method of imidizing by performing a heat treatment in the temperature range.
- imidization is performed in a solution of a polyamic acid having a repeating unit represented by the general formula (8) in the presence of an imidizing agent. It is preferable to do.
- the organic solvent described in the step (I) can be preferably used. Therefore, in the case of employing a method of imidizing using an imidizing agent, the above general formula is not contained in the organic solvent without isolating the polyamic acid having the repeating unit represented by the general formula (8).
- Reaction liquid obtained by reacting the tetracarboxylic dianhydride represented by (6) with the aromatic diamine represented by the above general formula (7) (repeated by the above general formula (8)) More preferably, the reaction solution containing the polyamic acid having a unit) is used as it is as the polyamic acid solution, and an imidizing agent is added to the polyamic acid solution (reaction solution) for imidization.
- an imidizing agent a known imidizing agent can be appropriately used.
- acid anhydrides such as acetic anhydride, propionic anhydride, trifluoroacetic anhydride
- pyridine collidine
- lutidine triethylamine
- N -Tertiary amines such as methylpiperidine and ⁇ -picoline
- the reaction temperature at the time of imidation is preferably 0 to 180 ° C, and more preferably 60 to 150 ° C.
- the reaction time is preferably 0.1 to 48 hours. If the reaction temperature or time is less than the lower limit, it tends to be difficult to sufficiently imidize. On the other hand, if the upper limit is exceeded, the mixing probability of a substance (such as oxygen) that degrades the polymer increases and the molecular weight increases. It tends to decrease.
- the amount of such an imidizing agent is not particularly limited, and is several millimoles to several moles (preferably 0.00. 05 to 1.0 mol).
- a polyimide containing at least one repeating unit represented by the general formula (1) can be obtained.
- the above general formula (1) is obtained by heating and curing the polyamic acid obtained as a dry coating film on the substrate as described above.
- the method (a) for obtaining a substrate film made of polyimide having a repeating unit represented may be adopted, or polyimide obtained as a dry coating film on a substrate as described above or as described above Using the polyimide solution imidized by adding an imidizing agent, this is added to a solvent having poor solubility of the polyimide, and subjected to filtration, washing, drying, etc.
- the polyimide containing the repeating unit represented is isolated, the isolated polyimide is dissolved in an organic solvent to prepare a polyimide solution, and the polyimide The liquid is applied to the base material, the coating film is dried, and the dried coating film of polyimide containing the repeating unit represented by the general formula (1) is heat-cured and represented by the general formula (1).
- the method for heat-curing the dried polyimide coating film employed in such methods (a) and (b) is not particularly limited, but is a temperature in the vicinity of the glass transition temperature of the polyimide (more preferably glass transition temperature ⁇ 40). It is preferable to employ a method of heating at 0.1 ° C., more preferably glass transition temperature ⁇ 20 ° C., particularly preferably glass transition temperature ⁇ 10 ° C. for 0.1 to 10 hours (preferably 0.5 to 2 hours). If the heating temperature and time are less than the lower limit, the solid phase polymerization reaction does not proceed sufficiently and the film tends to be brittle and weak. On the other hand, if the upper limit is exceeded, coloration or molecular weight reduction due to thermal decomposition may occur. It tends to happen.
- the atmosphere at the time of heat curing of such a dried coating film is preferably an inert gas atmosphere (for example, nitrogen atmosphere), and the pressure condition at the time of heat curing is 0.01 to 760 mmHg. It is preferable that it is 0.01 to 200 mmHg.
- the heat treatment for imidization and the heat treatment for subsequent heat curing may be performed simultaneously as a series of heat treatments.
- the heating treatment at the time of the imidization described above is preferably performed continuously at a constant temperature as a temperature within the temperature range adopted at the time of the heat curing. That is, in the case of adopting the method (a), a coating film is cured as it is after imidation by a series of heat treatment (imidation and heat curing are one heat treatment) to obtain a substrate film. You can also.
- the said method (b) although it does not restrict
- the solvent for the polyimide solution in the method (b) the same solvent as that for the polyamic acid solution described above can be used.
- the polyimide solution applied in the method (b) can be used.
- a method for drying the film a method similar to the method for drying the coating film of the polyamic acid solution described above can be employed.
- At least one repeating unit represented by the general formula (1) is contained, and the glass transition temperature is 350 ° C. to 450 ° C.
- a substrate film made of polyimide having a linear expansion coefficient of 30 ppm / ° C. or less can be obtained.
- the polyimide substrate film thus obtained has sufficiently high heat resistance and a sufficiently low coefficient of linear expansion, and has sufficiently high resistance to thermal shock (change in ambient temperature). It will have.
- the thin film made of a conductive material according to the present invention is laminated on the substrate film made of the polyimide.
- Such a conductive material is not particularly limited as long as it is a conductive material, and a known conductive material that can be used for a solar cell, an organic EL element, a transparent electrode of a liquid crystal display device, or the like.
- the film thickness of such a thin film made of a conductive material can be appropriately changed depending on the application and is not particularly limited. It is preferably 10 nm to 1000 nm, more preferably 20 nm to 500 nm, and particularly preferably 20 nm to 200 nm. If the thickness of such a conductive thin film is less than the lower limit, the surface resistance value is not sufficiently low, and the photoelectric conversion efficiency tends to decrease when used in a solar cell. There is a tendency that the production efficiency decreases due to a decrease in film formation time or a long film formation time.
- a method for laminating a thin film made of such a conductive material on the substrate film is not particularly limited, and a known method can be used as appropriate. For example, a sputtering method, a vacuum deposition method, A method of laminating the thin film on the substrate film by forming a thin film of the conductive material by a vapor deposition method such as an ion plating method or a plasma CVD method may be adopted.
- a gas barrier film may be formed on the substrate film in advance, and the thin film may be laminated on the substrate film via the gas barrier film.
- Such a gas barrier film is not particularly limited, and a known film that can be used for a solar cell, an organic EL element, a transparent electrode of a liquid crystal display device, or the like can be appropriately used, and a formation method thereof is also a known method. Can be used as appropriate.
- the substrate film is made of polyimide having a glass transition temperature of 350 ° C. to 450 ° C. and a linear expansion coefficient of 30 ppm / ° C. or less.
- an existing sputtering apparatus for manufacturing an ITO glass substrate for example, an existing ITO glass used for an electron beam heating vacuum deposition method, a DC magnetron sputtering method, etc.
- the transparent conductive laminate of the present invention forms a metal thin film on a plastic substrate such as a PET film such as a low energy ion plating method, application of a strong magnetic field, or DC / RF superposition type magnetron sputtering method. It is not always necessary to use a special damage-free sputtering apparatus such as that used in the above, and the existing equipment that can be used when manufacturing a metal thin film on a glass substrate is used, and the polyimide is used as a substitute for the glass substrate.
- a transparent conductive laminate can also be produced using a substrate film, which can be said to be highly useful from the viewpoint of production costs including capital investment.
- a metal thin film such as ITO is formed on a plastic substrate such as a PET film by a low-temperature process near normal temperature, a process of annealing and crystallizing to improve the conductivity and reliability of the obtained amorphous film
- this step can be eliminated.
- the substrate film made of polyimide is lightweight, so that the final product (for example, tablet terminal) using the same It is possible to reduce the weight of the touch panel.
- the transparent conductive laminate of the present invention is obtained by laminating a thin film made of the conductive material on a substrate film made of the polyimide.
- “transparent” means that the total light transmittance is 78% or more (more preferably 80% or more, still more preferably 82% or more).
- Such a total light transmittance is easily obtained by appropriately selecting the type of polyimide of the substrate film made of the polyimide according to the present invention and the type of conductive material that is a thin film material laminated on the substrate film. Can be achieved.
- a value measured using a trade name “Haze Meter NDH-5000” manufactured by Nippon Denshoku Industries Co., Ltd. can be used as a measuring device.
- the thin film made of the conductive material preferably has a surface resistivity (sheet resistance) of 1 to 100 ⁇ / ⁇ (more preferably 10 to 70 ⁇ / ⁇ ). If the surface resistivity is less than the lower limit, the thin film made of a conductive material tends to be thick and the total light transmittance tends to decrease. On the other hand, if the upper limit is exceeded, the thin film made of a conductive material becomes thin and the total light transmittance is reduced. Although the rate is improved, it tends to not reach the surface resistivity (sheet resistance) required for the transparent electrode of the touch panel of the solar cell, the organic EL element, the liquid crystal display device, or the tablet terminal.
- sheet resistance surface resistivity
- Such a surface resistivity can be easily obtained by laminating a conductive thin film on the polyimide of the present invention under an ordinary temperature condition (for example, 250 to 350 ° C.) using an existing sputtering apparatus for producing an ITO glass substrate. Can be achieved.
- a surface resistance meter for example, “Loresta surface resistance meter MCP-TESTER Loresta-FP” manufactured by Mitsubishi Yuka Co., Ltd.
- the sample size is not particularly limited.
- a value measured by adopting a four-probe method based on JIS K7194 (1994) can be adopted.
- the required resistivity value is constant regardless of the shape and size of the sample, so the sample size may be changed as appropriate,
- the length may be 40 mm
- the width is 40 mm
- the thickness is 0.05 mm.
- Such a transparent conductive laminate of the present invention can obtain a sufficiently high thermal shock resistance by the substrate film made of the polyimide, even if it is exposed to high temperatures in the manufacturing process of solar cells and display devices, Since it is possible to sufficiently suppress the occurrence of cracks and cracks in a thin film made of a conductive material, it is particularly useful as a transparent electrode for solar cells, a transparent electrode for display devices (organic EL display devices, liquid crystal display devices, etc.), etc. .
- the touch panel, solar cell, and display device of the present invention each include the transparent conductive laminate of the present invention.
- the “display device” is not particularly limited as long as the transparent conductive laminate can be used, and examples thereof include a liquid crystal display device and an organic EL display device.
- a touch panel, a solar cell, and a display device other configurations are not particularly limited, except that each of the touch panel, the solar cell, and the display device includes the transparent conductive laminate of the present invention. Can be adopted as appropriate.
- a configuration for example, a configuration in which a touch panel includes a transparent electrode and another transparent electrode arranged with a gap interposed therebetween, and a solar cell includes a transparent electrode, a semiconductor layer, and a conductive layer for a counter electrode.
- the organic EL display device includes a transparent electrode, an organic layer, and a conductive layer for a counter electrode
- the liquid crystal display device includes a transparent electrode, a liquid crystal layer, and a conductive layer for a counter electrode.
- the structure which includes is mentioned. Moreover, it does not restrict
- the transparent conductive laminate of the present invention as the transparent electrode, a high temperature that is normally employed in the manufacturing process of touch panels, solar cells, and display devices (liquid crystal display devices and organic EL display devices). Even if it is exposed to the conditions, the transparent electrode layer (thin film made of a conductive material) is sufficiently suppressed from cracking, etc., so that it produces high quality touch panels, solar cells, and display devices with high yield. It becomes possible to do.
- the transparent film of the present invention has the following general formula (1):
- R 1, R 2, R 3 are each independently a hydrogen atom, it represents one selected from the group consisting of alkyl groups and fluorine atoms having 1 to 10 carbon atoms, R 4 is Represents an aryl group having 6 to 40 carbon atoms, and n represents an integer of 0 to 12. ] In a temperature range of 50 ° C. to 200 ° C. under a nitrogen atmosphere under a temperature rising rate of 5 ° C./min. It is a transparent film made of polyimide having a linear expansion coefficient of 30 ppm / ° C. or less determined by measuring a change in length.
- transparent means that the total light transmittance is 80% or more (more preferably 85% or more, particularly preferably 87% or more).
- the polyimide which forms such a transparent film of this invention is the same as what was demonstrated as a polyimide which forms the board
- the transparent film of the present invention is basically the same as the above-described substrate film, and can be manufactured by employing the same method as the above-described method for manufacturing a substrate film.
- the transparent film of this invention should just be a transparent film which consists of said polyimide, According to a use etc., the design of the suitable thickness, a magnitude
- Such a transparent film of the present invention is not only sufficiently high in transparency, but also has a sufficiently high heat resistance and a very low linear expansion coefficient, so that it is exposed to high temperatures in the manufacturing process of solar cells and display devices. Since it is possible to sufficiently suppress the occurrence of cracks and cracks, for example, a substrate film for laminating transparent electrodes for touch panels and solar cells, and transparent electrodes for display devices (organic EL display devices, liquid crystal display devices, etc.) are laminated.
- FPC optical waveguide
- image sensor LED reflector
- LED illumination cover skeleton FPC
- cover lay film chip-on film
- high ductility composite substrate liquid crystal alignment film
- polyimide coating material Buffer coating materials for DRAM, flash memory, next-generation LSI, etc.
- semiconductor resists various types It is particularly useful as films for use in applications material or the like.
- Identification of the molecular structure of the compound obtained in each synthesis example, each example, etc. is performed using an infrared spectroscopic analyzer (manufactured by JASCO Corporation, FT / IR-460, FT / IR-4100, Thermo Fisher Scientific Co., Ltd.). The measurement was carried out by measuring IR and NMR spectra using a company-made, NICOLET 380FT-IR) and an NMR measuring machine (VARIAN, trade name: UNITY INOVA-600 and JEOL Ltd. JNM-Lambda500).
- Tg glass transition temperature
- the glass transition temperature (Tg) of the substrate film or the like obtained in each Example and Comparative Example was determined by using a differential scanning calorimeter (trade name “DSC7020” manufactured by SII Nano Technology Co., Ltd.). : Measurement was performed by scanning the range of 30 ° C. to 440 ° C. under a nitrogen atmosphere under the conditions of 10 ° C./min and the temperature decreasing rate: 30 ° C./min.
- the intrinsic viscosity [ ⁇ ] of the polyamic acid obtained as an intermediate when producing a substrate film or the like in each Example and Comparative Example 1 was measured using an automatic viscosity measuring apparatus (trade name “VMC-252”) manufactured by Koiso Co., Ltd.
- VMC-252 automatic viscosity measuring apparatus
- a measurement sample of polyamic acid having a concentration of 0.5 g / dL was prepared using N, N-dimethylacetamide as a solvent, and measurement was performed at a temperature of 30 ° C.
- the linear expansion coefficients of the substrate films and the like obtained in Examples 1 to 7 and Comparative Examples 1 and 2 are 20 mm in length, 5 mm in width, and 0.05 mm (50 ⁇ m) in thickness.
- the change in length was measured, and the average value of the change in length per 1 ° C. in the temperature range of 50 ° C. to 200 ° C. was measured.
- the linear expansion coefficient was measured like Example 1 except the thickness of the sample having been 0.1 mm (100 micrometers).
- the total light transmittance of the substrate laminates obtained in each example and each comparative example and the conductive laminate obtained in each example and each comparative example is a product manufactured by Nippon Denshoku Industries Co., Ltd. as a measuring device. The measurement was performed according to JIS K7361-1 using the name “Haze Meter NDH-5000”.
- thermal shock resistance thermal shock resistance of substrate film and conductive laminate
- Evaluation tests of the thermal shock resistance of the films (substrate films and the like) obtained in Examples 1 to 12 and Comparative Examples 1 and 3 and the conductive laminates are the films (substrate films and the like) obtained in each Example and the like.
- the conductive laminate was placed in a 350 ° C. vacuum oven for 1 hour, then cooled to 100 ° C., returned to normal pressure, taken out, and the surface condition of the substrate film and the conductive laminate was confirmed. (First thermal shock resistance evaluation test (measurement temperature condition: 350 ° C.)).
- Example 3 For the conductive laminates obtained in each Example and Comparative Example 3, the same method as the first thermal shock resistance evaluation test was adopted except that the temperature condition of the vacuum oven was 400 ° C. The second thermal shock resistance was also measured (second thermal shock evaluation test (measurement temperature condition: 400 ° C.)).
- the dropping funnel was set in the two-necked flask, and the hydrochloric acid aqueous solution was dropped into the dimethylamine aqueous solution under ice-cooling to prepare dimethylamine hydrochloride in the two-necked flask.
- 2.78 g (92.4 mmol) of paraformaldehyde and 2.59 g (30.8 mmol) of cyclopentanone were further added to the two-necked flask.
- the inside of the two-necked flask was replaced with nitrogen. Thereafter, the two-necked flask was submerged in a 90 ° C.
- the heated mixture is cooled to room temperature (25 ° C.) and then transferred to a 200 ml separatory funnel. After adding n-heptane (80 ml), the n-heptane layer is recovered and the first extraction operation is performed. Went. Next, n-heptane (40 ml) was added to the remaining methyl cellosolve layer, and the n-heptane layer was recovered and subjected to a second extraction operation. The n-heptane layers obtained by the first and second extraction operations were mixed to obtain an n-heptane extract.
- the n-heptane extract was washed once with a 5% by mass sodium hydroxide (NaOH) aqueous solution (25 ml) and then once with 5% by mass hydrochloric acid (25 ml). Subsequently, the n-heptane extract after washing with the hydrochloric acid solution was washed once with 5% by mass of sodium bicarbonate water (25 ml), and further washed once with saturated saline (25 ml). Next, the n-heptane extract thus washed was dried over anhydrous magnesium sulfate, and the anhydrous magnesium sulfate was filtered to obtain a filtrate.
- NaOH sodium hydroxide
- IR and NMR ( 1 H-NMR and 13 C-NMR) measurements of the obtained compound were performed.
- the IR spectrum of the compound thus obtained is shown in FIG. 1
- the 1 H-NMR (DMSO-d 6 ) spectrum is shown in FIG. 2
- the 13 C-NMR (DMSO-d 6 ) spectrum is shown in FIG. .
- Norbornane-2-spiro-2′-cyclopentanone-5′-spiro-2 ′′ -norbornane-5,5 ′′, 6,6 ′′ -tetracarboxylic dianhydride was confirmed.
- the total yield of such norbornane-2-spiro-2′-cyclopentanone-5′-spiro-2 ′′ -norbornane-5,5 ′′, 6,6 ′′ -tetracarboxylic dianhydride The rate was 88%.
- Example 1 First, a 30 ml three-necked flask was heated with a heat gun and sufficiently dried. Next, the atmosphere gas in the three-necked flask that was sufficiently dried was replaced with nitrogen, and the inside of the three-necked flask was changed to a nitrogen atmosphere. Next, 0.1337 g (0.63 mmol: manufactured by Tokyo Chemical Industry Co., Ltd .: OTD) and 0.0541 g (0.27 mmol: Wakayama Seika Kogyo Co., Ltd.) of 4,4′-diaminodiphenyl ether were placed in the three-necked flask.
- N, N-dimethylacetamide was further added and stirred to add an aromatic diamine compound (o-tolidine (OTD) to the N, N-dimethylacetamide.
- OTD aromatic diamine compound
- DDE 4,4′-diaminodiphenyl ether
- a dimethylacetamide solution having a polyamic acid concentration of 0.5 g / dL was prepared by using a part of the reaction solution (polyamic acid dimethylacetamide solution), and the intrinsic viscosity of the polyamic acid as the reaction intermediate was prepared. [ ⁇ ] was measured. The intrinsic viscosity of such polyamic acid is shown in Table 1.
- the reaction solution obtained as described above is cast on a glass plate (length: 200 mm, width 200 mm) so that the thickness of the heat-cured coating film becomes 50 ⁇ m, and is coated on the glass plate.
- a film was formed.
- the glass plate on which the coating film has been formed is put into a vacuum oven, heated under a temperature condition of 40 ° C. for 12 hours under a pressure of 100 mmHg, and further under a temperature condition of 400 ° C. under a pressure of 1 mmHg.
- the film was cured by heating for 1 hour to form a polyimide film on the glass plate.
- the glass plate on which the film made of polyimide is formed is taken out from the vacuum oven, immersed in water at 25 ° C. for 12 hours, the film made of polyimide is recovered from the glass plate, the end portion is cut off, and the polyimide plate is made
- a colorless and transparent substrate film (length 100 mm, width 100 mm, thickness 50 ⁇ m) was obtained.
- the IR spectrum of the compound forming the substrate film thus obtained was measured.
- the IR spectrum of the obtained compound is shown in FIG.
- substrate film is the measurement result of the kind of the monomer (The tetracarboxylic dianhydride and aromatic diamine compound (OTD, DDE) which were obtained by the synthesis example 1) used, and IR spectrum. From the above, it was found that it contains a repeating unit represented by the general formula (1).
- the polyimide is represented by the general formula (1)
- R 4 in the formula (1) is a group represented by the general formula (4)
- R 5 in the formula (4) is a methyl group
- a group represented by the general formula (1) and R 4 in the formula (1) is represented by the general formula (5) (Q in the formula (5) is —O— It was found that it was a polyimide containing a repeating unit.
- Example 2 First, a 30 ml three-necked flask was heated with a heat gun and sufficiently dried. Next, the atmosphere gas in the three-necked flask that was sufficiently dried was replaced with nitrogen, and the inside of the three-necked flask was changed to a nitrogen atmosphere. Next, 0.1432 g (0.63 mmol: manufactured by Tokyo Chemical Industry Co., Ltd .: DBA) and 4,4′-diaminodiphenyl ether 0.0541 (0.27 mmol: Wakayama) were placed in the three-necked flask.
- NDE aromatic diamine compound
- DBA 4,4′-Diaminobenzanilide
- DDE 4,4′-diaminodiphenyl ether
- a dimethylacetamide solution having a polyamic acid concentration of 0.5 g / dL was prepared by using a part of the reaction solution (polyamic acid dimethylacetamide solution), and the intrinsic viscosity of the polyamic acid as the reaction intermediate was prepared. [ ⁇ ] was measured. The intrinsic viscosity of such polyamic acid is shown in Table 1.
- the reaction solution obtained as described above is cast on a glass plate (length: 200 mm, width 200 mm) so that the thickness of the heat-cured coating film becomes 50 ⁇ m, and is coated on the glass plate.
- a film was formed.
- the glass plate on which the coating film has been formed is put into a vacuum oven, heated under a temperature condition of 40 ° C. for 12 hours under a pressure of 100 mmHg, and further under a temperature condition of 400 ° C. under a pressure of 1 mmHg.
- the film was cured by heating for 1 hour to form a polyimide film on the glass plate.
- the glass plate on which the film made of polyimide is formed is taken out from the vacuum oven, immersed in water at 25 ° C. for 12 hours, the film made of polyimide is recovered from the glass plate, the end portion is cut off, and the polyimide plate is made
- a colorless and transparent substrate film (length 100 mm, width 100 mm, thickness 50 ⁇ m) was obtained.
- FIG. 5 shows the IR spectrum of the obtained compound.
- C ⁇ O stretching vibration of imide carbonyl was confirmed at 1696.8 cm ⁇ 1
- the obtained substrate film was made of polyimide. confirmed.
- substrate film is the measurement result of the kind of monomer (The tetracarboxylic dianhydride and aromatic diamine compound (DBA, DDE) which were obtained by the synthesis example 1) used, and IR spectrum. From the above, it was found that it contains a repeating unit represented by the general formula (1).
- the polyimide is represented by the general formula (1) and R 4 in the formula (1) is represented by the general formula (5) (Q in the formula (5) is represented by —CONH—.
- a group represented by the general formula (1) and R 4 in the formula (1) is represented by the general formula (5) (Q in the formula (5) is- It was found to be a polyimide containing a repeating unit which is a group represented by O-).
- Example 3 First, a 30 ml three-necked flask was heated with a heat gun and sufficiently dried. Next, the atmosphere gas in the three-necked flask that was sufficiently dried was replaced with nitrogen, and the inside of the three-necked flask was changed to a nitrogen atmosphere. Next, after introducing 0.2045 g (0.90 mmol: Tokyo Chemical Industry Co., Ltd .: DBA) of 4,4′-diaminobenzanilide into the three-necked flask, 2.7 g of N, N-dimethylacetamide was further added. By adding and stirring, the aromatic diamine compound (4,4′-diaminobenzanilide (DBA)) was dissolved in the N, N-dimethylacetamide to obtain a solution (DBA partially dissolved) ).
- DBA aromatic diamine compound
- a dimethylacetamide solution having a polyamic acid concentration of 0.5 g / dL was prepared by using a part of the reaction solution (polyamic acid dimethylacetamide solution), and the intrinsic viscosity of the polyamic acid as the reaction intermediate was prepared. [ ⁇ ] was measured. The intrinsic viscosity of such polyamic acid is shown in Table 2.
- the reaction solution obtained as described above is cast on a glass plate (length: 200 mm, width 200 mm) so that the thickness of the heat-cured coating film becomes 50 ⁇ m, and is coated on the glass plate.
- a film was formed.
- the glass plate on which the coating film has been formed is put into a vacuum oven, heated under a temperature condition of 40 ° C. for 12 hours under a pressure of 100 mmHg, and further under a temperature condition of 400 ° C. under a pressure of 1 mmHg.
- the film was cured by heating for 1 hour to form a polyimide film on the glass plate.
- the glass plate on which the film made of polyimide is formed is taken out from the vacuum oven, immersed in water at 25 ° C. for 12 hours, the film made of polyimide is recovered from the glass plate, the end portion is cut off, and the polyimide plate is made.
- a colorless and transparent film (length 100 mm, width 100 mm, thickness 50 ⁇ m) was obtained.
- FIG. 6 shows the IR spectrum of the obtained compound.
- C ⁇ O stretching vibration of imide carbonyl was confirmed at 1697.6 cm ⁇ 1, and it was confirmed that the obtained film was made of polyimide. It was done.
- the said polyimide contains the repeating unit represented by the said General formula (1) from the measurement result of such IR spectrum, the kind of used monomer, etc. That is, the polyimide is represented by the general formula (1) and R 4 in the formula (1) is represented by the general formula (5) (Q in the formula (5) is represented by —CONH—. It was found to be a polyimide containing a repeating unit.
- Example 4 First, a 30 ml three-necked flask was heated with a heat gun and sufficiently dried. Next, the atmosphere gas in the three-necked flask that was sufficiently dried was replaced with nitrogen, and the inside of the three-necked flask was changed to a nitrogen atmosphere. Next, 0.1528 g (0.72 mmol: manufactured by Tokyo Chemical Industry Co., Ltd .: OTD) and 0.0360 g (0.18 mmol: Wakayama Seika Kogyo Co., Ltd.) of 4,4′-diaminodiphenyl ether were placed in the three-necked flask.
- N, N-dimethylacetamide was further added and stirred to add an aromatic diamine compound (o-tolidine (OTD) to the N, N-dimethylacetamide.
- OTD aromatic diamine compound
- DDE 4,4′-diaminodiphenyl ether
- a dimethylacetamide solution having a polyamic acid concentration of 0.5 g / dL was prepared by using a part of the reaction solution (polyamic acid dimethylacetamide solution), and the intrinsic viscosity of the polyamic acid as the reaction intermediate was prepared. [ ⁇ ] was measured. The intrinsic viscosity of such polyamic acid is shown in Table 2.
- the reaction solution obtained as described above is cast on a glass plate (length: 200 mm, width 200 mm) so that the thickness of the heat-cured coating film becomes 50 ⁇ m, and is coated on the glass plate.
- a film was formed.
- the glass plate on which the coating film has been formed is put into a vacuum oven, heated under a temperature condition of 40 ° C. for 12 hours under a pressure of 100 mmHg, and further under a temperature condition of 400 ° C. under a pressure of 1 mmHg.
- the film was cured by heating for 1 hour to form a polyimide film on the glass plate.
- the glass plate on which the film made of polyimide is formed is taken out from the vacuum oven, immersed in water at 25 ° C. for 12 hours, the film made of polyimide is recovered from the glass plate, the end portion is cut off, and the polyimide plate is made.
- a colorless and transparent film (length 100 mm, width 100 mm, thickness 50 ⁇ m) was obtained.
- FIG. 7 shows the IR spectrum of the obtained compound.
- the C ⁇ O stretching vibration of imide carbonyl was confirmed at 1700.5 cm ⁇ 1 and it was confirmed that the obtained film was made of polyimide. It was done.
- the polyimide which forms the obtained film is based on the types of monomers used (tetracarboxylic dianhydride and aromatic diamine compound (OTD, DDE) obtained in Synthesis Example 1), and IR spectrum measurement results. These were found to contain repeating units represented by the above general formula (1).
- the polyimide is represented by the general formula (1), and R 4 in the formula (1) is a group represented by the general formula (4) (R 5 in the formula (4) is a methyl group. And a repeating unit represented by the general formula (1), wherein R 4 is represented by the general formula (5) (Q in the formula (5) is represented by —O—). It was found to be a polyimide containing a repeating unit which is a group).
- Example 5 First, a 30 ml three-necked flask was heated with a heat gun and sufficiently dried. Next, the atmosphere gas in the three-necked flask that was sufficiently dried was replaced with nitrogen, and the inside of the three-necked flask was changed to a nitrogen atmosphere. Next, 0.0876 g (0.81 mmol: Aldrich: PPD) of p-phenylenediamine and 0.018 g (0.09 mmol: Wakayama Seika Kogyo Co., Ltd.) of 4,4′-diaminodiphenyl ether are placed in the three-necked flask.
- PPD p-phenylenediamine
- 0.018 g 0.09 mmol: Wakayama Seika Kogyo Co., Ltd.
- DDE is further introduced, and 2.7 g of N, N-dimethylacetamide is further added and stirred, whereby the aromatic diamine compound (p-phenylenediamine (PPD)) is added to the N, N-dimethylacetamide. And 4,4′-diaminodiphenyl ether (DDE)) were dissolved to obtain a solution.
- PPD p-phenylenediamine
- DDE 4,4′-diaminodiphenyl ether
- a dimethylacetamide solution having a polyamic acid concentration of 0.5 g / dL was prepared by using a part of the reaction solution (polyamic acid dimethylacetamide solution), and the intrinsic viscosity of the polyamic acid as the reaction intermediate was prepared. [ ⁇ ] was measured. The intrinsic viscosity of such polyamic acid is shown in Table 2.
- the reaction solution obtained as described above is cast on a glass plate (length: 200 mm, width 200 mm) so that the thickness of the heat-cured coating film becomes 50 ⁇ m, and is coated on the glass plate.
- a film was formed.
- the glass plate on which the coating film has been formed is put into a vacuum oven, heated under a temperature condition of 40 ° C. for 12 hours under a pressure of 100 mmHg, and further under a temperature condition of 400 ° C. under a pressure of 1 mmHg.
- the film was cured by heating for 1 hour to form a polyimide film on the glass plate.
- the glass plate on which the film made of polyimide is formed is taken out from the vacuum oven, immersed in water at 25 ° C. for 12 hours, the film made of polyimide is recovered from the glass plate, the end portion is cut off, and the polyimide plate is made.
- a colorless and transparent film (length 100 mm, width 100 mm, thickness 50 ⁇ m) was obtained.
- the IR spectrum of the compound forming the film thus obtained was measured.
- the IR spectrum of the obtained compound is shown in FIG.
- C ⁇ O stretching vibration of imidecarbonyl was confirmed at 1699.0 cm ⁇ 1, and it was confirmed that the obtained film was made of polyimide. It was done.
- the polyimide which forms the obtained film is based on the types of monomers used (tetracarboxylic dianhydride and aromatic diamine compound (PPD, DDE) obtained in Synthesis Example 1), and IR spectrum measurement results. These were found to contain repeating units represented by the above general formula (1).
- the polyimide is represented by the general formula (1), and R 4 in the formula is a group represented by the general formula (2), and the general formula (1) and A polyimide containing a repeating unit in which R 4 in the formula (1) is a group represented by the general formula (5) (Q in the formula (5) is a group represented by —O—) It turns out that.
- Example 6 First, a 30 ml three-necked flask was heated with a heat gun and sufficiently dried. Next, the atmosphere gas in the three-necked flask that was sufficiently dried was replaced with nitrogen, and the inside of the three-necked flask was changed to a nitrogen atmosphere. Next, 0.1841 g (0.81 mmol: manufactured by Tokyo Chemical Industry Co., Ltd .: DBA) and 4,4′-diaminodiphenyl ether 0.0180 (0.09 mmol: Wakayama) were placed in the three-necked flask.
- NDE aromatic diamine compound
- DBA 4,4′-Diaminobenzanilide
- DDE 4,4′-diaminodiphenyl ether
- a dimethylacetamide solution having a polyamic acid concentration of 0.5 g / dL was prepared by using a part of the reaction solution (polyamic acid dimethylacetamide solution), and the intrinsic viscosity of the polyamic acid as the reaction intermediate was prepared. [ ⁇ ] was measured. The intrinsic viscosity of such polyamic acid is shown in Table 2.
- the reaction solution obtained as described above is cast on a glass plate (length: 200 mm, width 200 mm) so that the thickness of the heat-cured coating film becomes 50 ⁇ m, and is coated on the glass plate.
- a film was formed.
- the glass plate on which the coating film has been formed is put into a vacuum oven, heated under a temperature condition of 40 ° C. for 12 hours under a pressure of 100 mmHg, and further under a temperature condition of 400 ° C. under a pressure of 1 mmHg.
- the film was cured by heating for 1 hour to form a polyimide film on the glass plate.
- the glass plate on which the film made of polyimide is formed is taken out from the vacuum oven, immersed in water at 25 ° C. for 12 hours, the film made of polyimide is recovered from the glass plate, the end portion is cut off, and the polyimide plate is made.
- a colorless and transparent film (length 100 mm, width 100 mm, thickness 50 ⁇ m) was obtained.
- the polyimide which forms the obtained film is based on the types of monomers used (tetracarboxylic dianhydride and aromatic diamine compound (DBA, DDE) obtained in Synthesis Example 1), and IR spectrum measurement results. These were found to contain repeating units represented by the above general formula (1). That is, the polyimide is represented by the general formula (1) and R 4 in the formula (1) is represented by the general formula (5) (Q in the formula (5) is represented by —CONH—. And a group represented by the general formula (1) and R 4 in the formula (1) is represented by the general formula (5) (Q in the formula (5) is- It was found to be a polyimide containing a repeating unit which is a group represented by O-).
- Example 7 First, a 30 ml three-necked flask was heated with a heat gun and sufficiently dried. Next, the atmosphere gas in the three-necked flask that was sufficiently dried was replaced with nitrogen, and the inside of the three-necked flask was changed to a nitrogen atmosphere. Subsequently, 0.1636 g (0.72 mmol: manufactured by Tokyo Chemical Industry Co., Ltd .: DBA) and 4,4′-diaminodiphenyl ether 0.0360 (0.18 mmol: Wakayama) were placed in the three-necked flask.
- NDE aromatic diamine compound
- DBA 4,4′-Diaminobenzanilide
- DDE 4,4′-diaminodiphenyl ether
- a dimethylacetamide solution having a polyamic acid concentration of 0.5 g / dL was prepared by using a part of the reaction solution (polyamic acid dimethylacetamide solution), and the intrinsic viscosity of the polyamic acid as the reaction intermediate was prepared. [ ⁇ ] was measured. The intrinsic viscosity of such polyamic acid is shown in Table 2.
- the reaction solution obtained as described above is cast on a glass plate (length: 200 mm, width 200 mm) so that the thickness of the heat-cured coating film becomes 50 ⁇ m, and is coated on the glass plate.
- a film was formed.
- the glass plate on which the coating film has been formed is put into a vacuum oven, heated under a temperature condition of 40 ° C. for 12 hours under a pressure of 100 mmHg, and further under a temperature condition of 400 ° C. under a pressure of 1 mmHg.
- the film was cured by heating for 1 hour to form a polyimide film on the glass plate.
- the glass plate on which the film made of polyimide is formed is taken out from the vacuum oven, immersed in water at 25 ° C. for 12 hours, the film made of polyimide is recovered from the glass plate, the end portion is cut off, and the polyimide plate is made.
- a colorless and transparent film (length 100 mm, width 100 mm, thickness 50 ⁇ m) was obtained.
- the IR spectrum of the compound forming the film thus obtained was measured.
- C ⁇ O stretching vibration of imide carbonyl was confirmed at 1699.1 cm ⁇ 1. It was confirmed that it consisted of
- the polyimide which forms the obtained film is based on the types of monomers used (tetracarboxylic dianhydride and aromatic diamine compound (DBA, DDE) obtained in Synthesis Example 1), and IR spectrum measurement results. These were found to contain repeating units represented by the above general formula (1). That is, the polyimide is represented by the general formula (1) and R 4 in the formula (1) is represented by the general formula (5) (Q in the formula (5) is represented by —CONH—.
- a repeating unit represented by the general formula (1), and R 4 in the formula (1) is a group represented by the general formula (5) (Q in the formula (5) is- It was found to be a polyimide containing a repeating unit which is a group represented by O-).
- the reaction solution obtained as described above is cast on a glass plate (length: 200 mm, width 200 mm) so that the thickness of the heat-cured coating film becomes 50 ⁇ m, and is coated on the glass plate.
- a film was formed.
- the glass plate on which the coating film has been formed is put into a vacuum oven, heated under a temperature condition of 40 ° C. for 12 hours under a pressure of 100 mmHg, and further under a temperature condition of 400 ° C. under a pressure of 1 mmHg.
- the film was cured by heating for 1 hour to form a polyimide film on the glass plate.
- the glass plate on which the polyimide film is formed is taken out from the vacuum oven and immersed in water at 25 ° C. for 12 hours.
- a brown substrate film (length 80 mm, width 80 mm, thickness 50 ⁇ m) was obtained.
- the polyimide thus obtained was obtained by a polycondensation reaction between pyromellitic anhydride, which is an aromatic tetracarboxylic dianhydride, and 4,4′-diaminodiphenyl ether, which is an aromatic diamine compound. It was a family polyimide.
- FIG. 9 shows an IR spectrum of the obtained substrate film made of polyimide.
- C O stretching vibration of imide carbonyl was confirmed at 1712.7 cm ⁇ 1
- the obtained substrate film was made of polyimide. It was confirmed that.
- a conductive laminate for comparison was obtained in which a thin film made of ITO was laminated on the substrate film made of the aromatic polyimide.
- Example 2 A substrate film made of polyimide containing the repeating unit represented by the general formula (1) is not produced, and instead of the substrate film, a commercially available PET film (trade name “Tetron Film G2” manufactured by Teijin DuPont Films Ltd.) On the substrate film (PET) in the same manner as in Example 1, except that the substrate film was used as a substrate film and the temperature of the substrate film was changed from 300 ° C. to 150 ° C. in the sputtering method. A conductive laminate for comparison, in which a thin film made of ITO was laminated, was obtained.
- Example 3 A substrate film made of polyimide containing the repeating unit represented by the above general formula (1) was not produced, and instead of the substrate film, a commercially available polyimide film (trade name “Neoprim L-3430 manufactured by Mitsubishi Gas Chemical Co., Ltd.) was used. ”, Length: 40 mm, width 40 mm, thickness 100 ⁇ m), except that a substrate film was used as in Example 1, and a conductive film for comparison in which a thin film made of ITO was laminated on a substrate film (Neoprim). A laminate was obtained.
- a commercially available polyimide film (trade name “Neoprim L-3430 manufactured by Mitsubishi Gas Chemical Co., Ltd.) was used. ”, Length: 40 mm, width 40 mm, thickness 100 ⁇ m), except that a substrate film was used as in Example 1, and a conductive film for comparison in which a thin film made of ITO was laminated on a substrate film (Neoprim). A laminate was obtained.
- Table 1 shows the measurement results of the characteristics of the substrate films obtained in Examples 1 and 2 and the transparent conductive laminates obtained in Examples 1 and 2.
- Table 1 shows the measurement results of the characteristics of the substrate films used in Comparative Examples 1 to 3 and the conductive laminates obtained in Comparative Examples 1 to 3.
- SBNA is norbornane-2-spiro-2′-cyclopentanone-5′-spiro-2 ′′ -norbornane-5,5 ′′, 6,6 ′′ -tetracarboxylic dianhydride
- DDE represents 4,4′-diaminodiphenyl ether
- OTD represents o-tolidine
- DBA represents 4,4′-diaminobenzanilide
- PMDA represents pyromellitic anhydride.
- the microscope (20 Magnification) photographs are shown in FIG. 10 (Example 1) and FIG. 11 (Comparative Example 3), respectively.
- the substrate film itself has sufficiently excellent thermal shock resistance (resistance to ambient temperature changes). It turns out to have.
- the linear expansion coefficient is 30 ppm / ° C. or less
- the glass transition temperature (Tg) is 350 ° C. or more. The present inventors speculate that this is because the linear expansion coefficient and the glass transition temperature (Tg) are balanced at a high level.
- the present inventors speculate that this is because a very high thermal shock resistance that can sufficiently maintain the quality of the laminate was exhibited. Further, it was confirmed that all of the transparent conductive laminates of the present invention (Examples 1 and 2) had a sufficiently low sheet resistance. From these results, it was found that the transparent conductive laminate (Examples 1 and 2) of the present invention can be effectively used for transparent electrodes of solar cells and display devices.
- the conductive laminate obtained in Comparative Example 1 has a brown substrate film and a total light transmittance of 56%, which is not sufficient in terms of transparency. It turned out that it does not fully function as transparent electrodes, such as a solar cell.
- the conductive laminate obtained in Comparative Example 2 is a PET film and has a low Tg of 83 ° C., so it is not necessary to conduct a first thermal shock evaluation test. It can be seen that this is not sufficient.
- the electroconductive laminate obtained in Comparative Example 3 shows white turbidity in both the first and second thermal shock resistance evaluation tests. A severe crack was confirmed in the thin film made of ITO.
- the transparent conductive laminate of the present invention (Example 1) was compared with the conductive laminate for comparison (Comparative Examples 1 to 3).
- ⁇ 2) has a very high thermal shock resistance and is found to be a material that can be suitably used in the production of organic EL elements and solar cells that employ a process temperature of around 400 ° C in the production process. It was.
- SBNA is norbornane-2-spiro-2′-cyclopentanone-5′-spiro-2 ′′ -norbornane-5,5 ′′, 6,6 ′′ -tetracarboxylic dianhydride
- DDE represents 4,4′-diaminodiphenyl ether
- OTD represents o-tolidine
- DBA represents 4,4′-diaminobenzanilide
- PPD represents p-phenylenediamine.
- the linear expansion coefficient was 15.4 ppm / ° C. or less, and it was confirmed that the film had a lower linear expansion coefficient. It was. It was also found that all of the transparent films of the present invention (Examples 3 to 7) have sufficiently excellent thermal shock resistance (resistance to ambient temperature changes). As a result, all the polyimides forming the transparent films of the present invention (Examples 3 to 7) are represented by the above general formula (1), the linear expansion coefficient is 30 ppm / ° C. or less, and the glass transition temperature ( The present inventors speculate that this is a polyimide having a Tg) of 350 ° C.
- the transparent films of the present invention are all transparent conductive films as in the case of the substrate films obtained in Examples 1 and 2. It can be seen that it is sufficiently useful as a substrate film for use in a conductive laminate and can exhibit sufficiently high thermal shock resistance.
- Example 8 to 12 As the colorless and transparent substrate film made of polyimide, in the same manner as in Example 1 except that the colorless and transparent film made of polyimide obtained in Examples 3 to 7 (length 100 mm, width 100 mm, thickness 50 ⁇ m) was used. Transparent conductive laminates in which a thin film made of ITO was laminated on a substrate film made of polyimide were produced.
- the colorless and transparent films (100 mm in length, 100 mm in width, 50 ⁇ m in thickness) made of polyimide obtained in Examples 3 to 7 were used as substrate films, respectively.
- a SRV4320 type sputtering device manufactured by Shinko Seiki Co., Ltd.
- using a target made of indium tin oxide (ITO, In: Sn 9: 1), pressure: 0.12 Pa, substrate film temperature: 300
- ITO indium tin oxide
- argon flow rate 18 sccm
- oxygen flow rate 2 sccm
- film formation time 11 minutes and 30 seconds
- RF power supply VDC ⁇ 130 W
- a 102 nm thick indium tin oxide (ITO) is formed by sputtering.
- the transparent conductive laminates (Examples 8 to 12) of the present invention using the films obtained in Examples 3 to 7 as substrate films have transparency. It is sufficiently high and made of ITO even after the first thermal shock resistance evaluation test (measurement temperature condition: 350 ° C.) and the second thermal shock resistance evaluation test (measurement temperature condition: 400 ° C.). It was confirmed that there was no change in the surface state of the thin film, and it had a very high thermal shock resistance. From these results, the transparent conductive laminate (Examples 8 to 12) of the present invention has a very high thermal shock resistance, and an organic EL that employs a process temperature of around 400 ° C. in the manufacturing process.
- the present invention has a sufficiently high thermal shock resistance, and the quality deteriorates even under high-temperature heating conditions such as those employed in the manufacturing process of solar cells and liquid crystal display devices. It is possible to provide a transparent conductive laminate that can sufficiently suppress the above, and a touch panel, a solar cell, and a display device using the same. In addition, according to the present invention, it is possible to provide a transparent film made of polyimide having excellent heat resistance and having a sufficiently low linear expansion coefficient, which can be suitably used as a substrate film or the like of the transparent conductive laminate. It becomes.
- Such a transparent conductive laminate of the present invention is particularly useful as a material for a transparent electrode such as a display device such as a liquid crystal display device or an organic EL display device, a solar cell, or a touch panel because it is excellent in transparency and thermal shock resistance. It is.
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Abstract
Description
前記ポリイミドが、下記一般式(1):
で表される繰り返し単位を少なくとも1種含有し、ガラス転移温度が350℃~450℃であり、且つ、窒素雰囲気下、昇温速度5℃/分の条件で50℃~200℃の温度範囲において長さの変化を測定して求められる線膨張係数が30ppm/℃以下であるポリイミドである、ものである。
で表される基のうちの1種であることが好ましい。
前記一般式(1)で表され、且つ、該式中のR4が、前記一般式(2)で表される基;及び前記Qが-O-、-S-、-CH2-、-O-C6H4-O-で表される基のうちの1種である前記一般式(5)で表される基;からなる群から選択される1種の基である繰り返し単位と、
を含有してなることが好ましい。
前記一般式(1)で表され、且つ、該式中のR4が、前記Qが-O-、-CH2-で表される基のうちの1種である前記一般式(5)で表される基からなる群から選択される1種の基である繰り返し単位と、
を含有してなることがより好ましい。
で表される繰り返し単位を少なくとも1種含有し、ガラス転移温度が350℃~450℃であり、且つ、窒素雰囲気下、昇温速度5℃/分の条件で50℃~200℃の温度範囲において長さの変化を測定して求められる線膨張係数が30ppm/℃以下であるポリイミドからなる透明フィルムである。このような本発明の透明フィルムは、上記本発明の透明導電性積層体が備える基板フィルム等に好適に用いることが可能なものである。
先ず、本発明の透明導電性積層体について説明する。すなわち、本発明の透明導電性積層体は、ポリイミドからなる基板フィルムと、該基板フィルム上に積層された導電性材料からなる薄膜とを備え、
前記ポリイミドが、下記一般式(1):
で表される繰り返し単位を少なくとも1種含有し、ガラス転移温度が350℃~450℃であり、且つ、窒素雰囲気下、昇温速度5℃/分の条件で50℃~200℃の温度範囲において長さの変化を測定して求められる線膨張係数が30ppm/℃以下であるポリイミドである、ものである。
本発明にかかるポリイミドは、上記一般式(1)で表される繰り返し単位を少なくとも1種含有するものである。
で表される基のうちの1種であることが好ましい。
で表されるノルボルナン-2-スピロ-α-シクロアルカノン-α’-スピロ-2’’-ノルボルナン-5,5’’,6,6’’-テトラカルボン酸二無水物類と、下記一般式(7):
で表される芳香族ジアミンとを反応させて、下記一般式(8):
で表される繰り返し単位を少なくとも1種含有するポリアミド酸を調製し、ポリアミド酸の溶液を得る工程(工程(I))と、
前記ポリアミド酸の溶液を基材上に塗布した後、前記ポリアミド酸をイミド化して、上記一般式(1)で表される繰り返し単位を有するポリイミドからなる基板フィルムを得る工程(工程(II))と、
を含む基板フィルムの製造方法を好適に利用することができる。以下、工程(I)と工程(II)を分けて説明する。
工程(I)は、有機溶媒の存在下、上記一般式(6)で表されるノルボルナン-2-スピロ-α-シクロアルカノン-α’-スピロ-2’’-ノルボルナン-5,5’’,6,6’’-テトラカルボン酸二無水物類(以下、場合により単に「一般式(6)で表される化合物」又は「一般式(6)で表されるテトラカルボン酸二無水物類」という。)と、上記一般式(7)で表される芳香族ジアミンとを反応させて、上記一般式(8)で表される繰り返し単位を有するポリアミド酸を調製し、ポリアミド酸の溶液を得る工程である。
で表される5-ノルボルネン-2-スピロ-α-シクロアルカノン-α’-スピロ-2’’-5’’-ノルボルネン類(以下、場合により単に「一般式(9)で表される化合物」という。)を、公知の方法等を適宜利用して、テトラカルボン酸二無水物化することにより、上記一般式(6)で表されるテトラカルボン酸二無水物類を得る方法を利用してもよい。このような一般式(9)で表される化合物をテトラカルボン酸二無水物化する方法としては特に制限されず、公知の方法を適宜利用することができ、例えば、1994年発行のMacromolecules(27巻)の1117頁に記載のような方法を採用してもよい。すなわち、このようなテトラカルボン酸二無水物化する方法としては、上記一般式(9)で表される化合物をPd触媒と塩化銅(II)および酢酸ナトリウムの存在下、一酸化炭素とメタノール等のアルコールでテトラエステル化し、得られたテトラメチルエステルをp-トルエンスルホン酸等の酸触媒の存在下、ギ酸とエステル交換反応させてテトラカルボン酸を得た後に、このエステル交換反応の反応系中に無水酢酸を共存させ、前記テトラカルボン酸を無水酢酸でテトラカルボン酸二無水物化する方法を採用してもよいし、前記テトラカルボン酸を一旦単離後、昇華精製装置で真空条件下、熱脱水反応させる方法を採用してもよい。
で表されるノルボルナン-2-スピロ-α-シクロアルカノン-α’-スピロ-2’’-ノルボルナン-5,5’’,6,6’’-テトラカルボン酸及びそのエステル類(以下、場合により単に「一般式(10)で表される化合物」という。)のうちの少なくとも1種の化合物を得る工程(第1工程)と、
低級カルボン酸(ギ酸、酢酸、プロピオン酸等)と、酸触媒と、無水酢酸とを用いて、前記化合物から上記一般式(6)で表されるノルボルナン-2-スピロ-α-シクロアルカノン-α’-スピロ-2’’-ノルボルナン-5,5’’,6,6’’-テトラカルボン酸二無水物類を得る工程(第2工程)と、
を含む方法(以下、場合により「テトラカルボン酸二無水物類の製造方法(A)」という。)を利用してもよい。
で表されるような反応を利用することにより一般式(9)で表される化合物を製造する方法を採用することができる。このような反応式(I)で表される方法は、一般式(I-1)で表されるシクロアルカノン(シクロペンタノンやシクロヘキサノン等)と、前記シクロアルカノンに対して2当量以上の二級アミンのアンモニウム塩(例えば塩酸塩、硫酸塩、酢酸塩等:反応式(I)中において式:NHR2HXで表される化合物)と、ホルムアルデヒド誘導体と、酸(塩酸、硫酸、酢酸等)とを用いて酸性の反応液を得た後、前記反応液を不活性ガス雰囲気下において30~180℃で0.5~10時間加熱し、反応液中において、カルボニル基の両隣に活性なα水素を有する環状ケトン類とホルムアルデヒド類と二級アミン類のマンニッヒ反応を進行せしめて、一般式(I-2)で表されるマンニッヒ塩基を合成し、次いで、得られたマンニッヒ塩基を単離することなく、その反応液中に、有機溶媒(ディールスアルダー反応に利用可能な有機溶媒であればよく、好ましくは、テトラハイドロフラン、メタノール、エタノール、イソプロパノール、ブタノール、アセトニトリル、メチルセロソルブ、エチルセロソルブ、エチレングリコール、プロピレングリコールモノメチルエーテル、プロピレングリコール等の有機溶媒)と、上記一般式(6)中のR1として選択され得る基と同様の基を置換基として有していてもよいシクロペンタジエン(前記マンニッヒ塩基に対して2当量以上)とを添加して混合物とした後、前記混合物に塩基を導入して中性又は塩基性とし、0~150℃(好ましくは60℃程度)の条件下において、前記混合物を0.1~48時間撹拌することにより、混合物中において、一般式(I-2)で表されるマンニッヒ塩基から一般式(I-3)で表されるジビニルケトンを合成せしめた後、その一般式(I-3)で表されるジビニルケトンと上記置換基を有していてもよいシクロペンタジエンとを反応(ディールスアルダー反応)させて、前記一般式(9)で表される化合物を製造する方法である。なお、前記ホルムアルデヒド誘導体としては、マンニッヒ塩基の製造に用いられる公知のホルムアルデヒドの誘導体を適宜利用でき、例えば、ホルマリン、パラホルムアルデヒド、トリオキサン、1,3-ジオキソラン等を適宜用いることができる。また、前記ジビニルケトンは、前記混合物の0~150℃の条件下における撹拌中に前記マンニッヒ塩基からアミン化合物が脱離して合成される。
R10OH (11)
[式(11)中、R10は、前記一般式(10)中のR6、R7、R8又はR9として選択され得る原子及び基のうちの水素原子以外のものである。]
で表されるアルコールであることが好ましい。すなわち、このようなアルコールとしては、炭素数が1~10のアルキルアルコール、炭素数が3~10のシクロアルキルアルコール、炭素数が2~10のアルケニルアルコール、炭素数が6~20のアリールアルコール、炭素数が7~20のアラルキルアルコールを用いることが好ましい。このようなアルコールとしては、具体的には、メタノール、エタノール、ブタノール、アリルアルコール、シクロヘキサノール、ベンジルアルコール等が挙げられ、中でも、得られる化合物の精製がより容易となるという観点から、メタノール、エタノールがより好ましく、メタノールが特に好ましい。また、このようなアルコールは1種を単独であるいは2種以上を混合して用いてもよい。
-COOR10 (12)
[式(12)中、R10は前記一般式(10)中のR6、R7、R8又はR9として選択され得る原子及び基のうちの水素原子以外のものである。]
で表されるエステル基(かかるエステル基は導入される位置ごとにR10が同一であっても異なっていてもよい。)を導入して、前記一般式(10)で表されるノルボルナン-2-スピロ-α-シクロアルカノン-α’-スピロ-2’’-ノルボルナン-5,5’’,6,6’’-テトラカルボン酸エステル類を得る反応(エステル化反応)である。
次に、工程(II)について説明する。工程(II)は、工程(I)により得られた上記一般式(8)で表される繰り返し単位を有するポリアミド酸の溶液を基材上に塗布した後、前記ポリアミド酸をイミド化して、上記一般式(1)で表される繰り返し単位を有するポリイミドからなる基板フィルムを得る工程(工程(II))である。
本発明にかかる導電性材料からなる薄膜は、前記ポリイミドからなる基板フィルム上に積層されるものである。
本発明の透明導電性積層体は、前記ポリイミドからなる基板フィルム上に前記導電性材料からなる薄膜が積層されてなるものである。このような透明導電性積層体において「透明」とは全光線透過率が78%以上(より好ましくは80%以上、更に好ましくは82%以上)であることをいう。このような全光線透過率は、上記本発明にかかるポリイミドからなる基板フィルムのポリイミドの種類や該基板フィルム上に積層する薄膜の材料である前記導電性材料の種類等を適宜選択することにより容易に達成することができる。なお、このような全光線透過率としては、測定装置として、日本電色工業株式会社製の商品名「ヘーズメーターNDH-5000」を用いて測定した値を採用することができる。
本発明のタッチパネル、太陽電池、表示装置は、それぞれ、上記本発明の透明導電性積層体を備えるものである。
本発明の透明フィルムは、下記一般式(1):
で表される繰り返し単位を少なくとも1種含有し、ガラス転移温度が350℃~450℃であり、且つ、窒素雰囲気下、昇温速度5℃/分の条件で50℃~200℃の温度範囲において長さの変化を測定して求められる線膨張係数が30ppm/℃以下であるポリイミドからなる透明フィルムである。
各合成例、各実施例等で得られた化合物の分子構造の同定は、赤外分光分析装置(日本分光株式会社製、FT/IR-460、FT/IR-4100、サーモフィッシャーサイエンティフィック株式会社製、NICOLET380FT-IR)及びNMR測定機(VARIAN社製、商品名:UNITY INOVA-600及び日本電子株式会社製JNM-Lambda500)を用いて、IR及びNMRスペクトルを測定することにより行った。
各実施例及び比較例で得られた基板フィルム等のガラス転移温度(Tg)は、示差走査熱量計(エスアイアイ・ナノテクノロジー株式会社製の商品名「DSC7020」)を使用して、昇温速度:10℃/分及び降温速度:30℃/分の条件で、窒素雰囲気下、30℃から440℃の範囲を走査することで測定を行なった。
各実施例及び各比較例で得られた基板フィルム等を構成する化合物の5%重量減少温度は、測定装置としてTG/DTA7200熱重量分析装置(エスアイアイ・ナノテクノロジー株式会社製)を使用して、窒素ガスを流しながら、室温(25℃)から600℃の範囲で10℃/分の条件で加熱して、用いた試料の重量が5%減少する温度を測定することにより求めた。
各実施例及び比較例1で基板フィルム等を製造する際に中間体として得られたポリアミド酸の固有粘度[η]は、離合社製の自動粘度測定装置(商品名「VMC-252」)を用い、N,N-ジメチルアセトアミドを溶媒として、濃度0.5g/dLのポリアミド酸の測定試料を調整し、30℃の温度条件下において測定した。
実施例1~7及び比較例1~2で得られた基板フィルム等の線膨張係数は、縦20mm、横5mm、厚み0.05mm(50μm)の大きさの試料を用い、測定装置として熱機械的分析装置(リガク製の商品名「TMA8310」)を利用して、窒素雰囲気下、引張りモード(49mN)、昇温速度5℃/分の条件を採用して、50℃~200℃における前記試料の長さの変化を測定して、50℃~200℃の温度範囲における1℃あたりの長さの変化の平均値を求めることにより測定した。なお、比較例3で用いた基板フィルムについては試料の厚みを0.1mm(100μm)とした以外は実施例1と同様にして線膨張係数を測定した。
各実施例及び各比較例で得られた基板フィルム等の屈折率は、測定装置として屈折率測定装置(株式会社アタゴ製の商品名「NAR-1T SOLID」)を用い、589nmの光源下、23℃の温度条件で測定した。
各実施例及び各比較例で得られた基板フィルム等と各実施例及び各比較例で得られた導電性積層体の全光線透過率は、それぞれ測定装置として日本電色工業株式会社製の商品名「ヘーズメーターNDH-5000」を用いてJIS K7361-1に準拠して測定した。
測定装置として表面抵抗計(三菱油化株式会社製の商品名「Loresta表面抵抗計 MCP-TESTER Loresta-FP」)を用い、実施例1~2、実施例8~12及び各比較例で得られた導電性積層体からそれぞれ作成した縦:40mm、横:40mmのサイズの試料(試料の厚みは各実施例及び各比較例で得られた導電性積層体の厚みのままとした。)を測定用試料として用いた以外はJIS K7194(1994年)に準拠した四探針法を採用して、各導電性積層体の表面抵抗率(シート抵抗)を測定した。
実施例1~12及び比較例1、3で得られたフィルム(基板フィルム等)及び導電性積層体の耐熱衝撃性の評価試験は、各実施例等で得られたフィルム(基板フィルム等)及び導電性積層体を350℃の真空オーブンに入れて1時間放置した後100℃まで冷却し、常圧に戻して取り出し、該基板フィルム及び導電性積層体の表面状態をそれぞれ確認することにより行った(第一の耐熱衝撃性の評価試験(測定温度条件:350℃))。また、各実施例及び比較例3で得られた導電性積層体については、前記真空オーブンの温度条件を400℃とする以外は第一の耐熱衝撃性の評価試験と同様の方法を採用して、第二の耐熱衝撃性も測定した(第二の耐熱衝撃性の評価試験(測定温度条件:400℃))。
先ず、100mlの二口フラスコに、50質量%ジメチルアミン水溶液を6.83g(ジメチルアミン:75.9mmol)添加した。次に、100mlの滴下ロートに35質量%塩酸水溶液を8.19g(塩化水素:78.9mmol)添加した。次いで、前記二口フラスコに前記滴下ロートをセットし、氷冷下において前記ジメチルアミン水溶液中に前記塩酸水溶液を滴下し、前記二口フラスコ中でジメチルアミン塩酸塩を調製した。次に、前記二口フラスコ中に、パラホルムアルデヒド2.78g(92.4mmol)と、シクロペンタノン2.59g(30.8mmol)とを更に添加した。次いで、前記二口フラスコに玉付きコンデンサーをセットした後、前記二口フラスコの内部を窒素で置換した。その後、前記二口フラスコを90℃のオイルバスに沈め、3時間加熱攪拌を行なって、上記一般式(I-2)で表される化合物であって式中のnが2であり、R2及びR3がいずれも水素原子であり且つRがいずれもメチル基であるマンニッヒ塩基を含有する反応液を得た。なお、このようにして得られた反応液に対してガスクロマトグラフィー分析(GC分析:検出器としてAgilent Technologies社製の商品名「6890N」を使用)を行った結果、シクロペンタノンの転化率は99%であることが確認された。
先ず、30mlの三口フラスコをヒートガンで加熱して十分に乾燥させた。次に、十分に乾燥させた前記三口フラスコ内の雰囲気ガスを窒素に置換して、前記三口フラスコ内を窒素雰囲気とした。次いで、前記三口フラスコ内にo-トリジン0.1337g(0.63mmol:東京化成工業株式会社製:OTD)と、4,4’-ジアミノジフェニルエーテル0.0541g(0.27mmol:和歌山精化工業株式会社製:DDE)とを導入した後、更に、N,N-ジメチルアセトアミドを2.7g添加し、攪拌することにより、前記N,N-ジメチルアセトアミド中に、芳香族ジアミン化合物(o-トリジン(OTD)及び4,4’-ジアミノジフェニルエーテル(DDE))を溶解させて、溶解液を得た。次いで、前記溶解液を含有する三口フラスコを、ドライアイス-アセトン浴中に沈めて冷却し、前記溶解液を固化させた。
先ず、30mlの三口フラスコをヒートガンで加熱して十分に乾燥させた。次に、十分に乾燥させた前記三口フラスコ内の雰囲気ガスを窒素に置換して、前記三口フラスコ内を窒素雰囲気とした。次いで、前記三口フラスコ内に、4,4’-ジアミノベンズアニリド0.1432g(0.63mmol:東京化成工業株式会社製:DBA)と4,4’-ジアミノジフェニルエーテル0.0541(0.27mmol:和歌山精化工業株式会社製:DDE)とを導入した後、更に、N,N-ジメチルアセトアミドを2.7g添加し、攪拌することにより、前記N,N-ジメチルアセトアミド中に、芳香族ジアミン化合物(4,4’-ジアミノベンズアニリド(DBA)及び4,4’-ジアミノジフェニルエーテル(DDE))を溶解させて溶解液を得た(DBAは一部溶解)。次いで、前記溶解液を含有する三口フラスコを、ドライアイス-アセトン浴中に沈めて冷却し、前記溶解液を固化させた。
先ず、30mlの三口フラスコをヒートガンで加熱して十分に乾燥させた。次に、十分に乾燥させた前記三口フラスコ内の雰囲気ガスを窒素に置換して、前記三口フラスコ内を窒素雰囲気とした。次いで、前記三口フラスコ内に、4,4’-ジアミノベンズアニリド0.2045g(0.90mmol:東京化成工業株式会社製:DBA)を導入した後、更に、N,N-ジメチルアセトアミドを2.7g添加し、攪拌することにより、前記N,N-ジメチルアセトアミド中に、芳香族ジアミン化合物(4,4’-ジアミノベンズアニリド(DBA))を溶解させて溶解液を得た(DBAは一部溶解)。
先ず、30mlの三口フラスコをヒートガンで加熱して十分に乾燥させた。次に、十分に乾燥させた前記三口フラスコ内の雰囲気ガスを窒素に置換して、前記三口フラスコ内を窒素雰囲気とした。次いで、前記三口フラスコ内にo-トリジン0.1528g(0.72mmol:東京化成工業株式会社製:OTD)と、4,4’-ジアミノジフェニルエーテル0.0360g(0.18mmol:和歌山精化工業株式会社製:DDE)とを導入した後、更に、N,N-ジメチルアセトアミドを2.7g添加し、攪拌することにより、前記N,N-ジメチルアセトアミド中に、芳香族ジアミン化合物(o-トリジン(OTD)及び4,4’-ジアミノジフェニルエーテル(DDE))を溶解させて、溶解液を得た。
先ず、30mlの三口フラスコをヒートガンで加熱して十分に乾燥させた。次に、十分に乾燥させた前記三口フラスコ内の雰囲気ガスを窒素に置換して、前記三口フラスコ内を窒素雰囲気とした。次いで、前記三口フラスコ内にp-フェニレンジアミン0.0876g(0.81mmol:Aldrich社製:PPD)と、4,4’-ジアミノジフェニルエーテル0.018g(0.09mmol:和歌山精化工業株式会社製:DDE)とを導入した後、更に、N,N-ジメチルアセトアミドを2.7g添加し、攪拌することにより、前記N,N-ジメチルアセトアミド中に、芳香族ジアミン化合物(p-フェニレンジアミン(PPD)及び4,4’-ジアミノジフェニルエーテル(DDE))を溶解させて、溶解液を得た。
先ず、30mlの三口フラスコをヒートガンで加熱して十分に乾燥させた。次に、十分に乾燥させた前記三口フラスコ内の雰囲気ガスを窒素に置換して、前記三口フラスコ内を窒素雰囲気とした。次いで、前記三口フラスコ内に、4,4’-ジアミノベンズアニリド0.1841g(0.81mmol:東京化成工業株式会社製:DBA)と4,4’-ジアミノジフェニルエーテル0.0180(0.09mmol:和歌山精化工業株式会社製:DDE)とを導入した後、更に、N,N-ジメチルアセトアミドを2.7g添加し、攪拌することにより、前記N,N-ジメチルアセトアミド中に、芳香族ジアミン化合物(4,4’-ジアミノベンズアニリド(DBA)及び4,4’-ジアミノジフェニルエーテル(DDE))を溶解させて溶解液を得た(DBAは一部溶解)。
先ず、30mlの三口フラスコをヒートガンで加熱して十分に乾燥させた。次に、十分に乾燥させた前記三口フラスコ内の雰囲気ガスを窒素に置換して、前記三口フラスコ内を窒素雰囲気とした。次いで、前記三口フラスコ内に、4,4’-ジアミノベンズアニリド0.1636g(0.72mmol:東京化成工業株式会社製:DBA)と4,4’-ジアミノジフェニルエーテル0.0360(0.18mmol:和歌山精化工業株式会社製:DDE)とを導入した後、更に、N,N-ジメチルアセトアミドを2.7g添加し、攪拌することにより、前記N,N-ジメチルアセトアミド中に、芳香族ジアミン化合物(4,4’-ジアミノベンズアニリド(DBA)及び4,4’-ジアミノジフェニルエーテル(DDE))を溶解させて溶解液を得た(DBAは一部溶解)。
30mlの三口フラスコをヒートガンで加熱して十分に乾燥させた。次に、十分に乾燥させた前記三口フラスコ内の雰囲気ガスを窒素に置換して、前記三口フラスコ内を窒素雰囲気とした。次いで、前記三口フラスコ内に、4,4’-ジアミノジフェニルエーテル0.1802g(0.90mmol:和歌山精化工業株式会社製:DDE)を入れた後、N,N-ジメチルアセトアミドを2.7g添加し、攪拌することにより、前記N,N-ジメチルアセトアミド中に4,4’-ジアミノジフェニルエーテル(DDE)を溶解させて溶解液を得た。次いで、前記溶解液を含有する三口フラスコをドライアイス-アセトン浴中に沈めて冷却し、前記溶解液を固化させた。
上記一般式(1)で表される繰り返し単位を含有するポリイミドからなる基板フィルムを製造せず、該基板フィルムの代わりに市販のPETフィルム(帝人デュポンフィルム株式会社製の商品名「テトロンフィルムG2」、縦:40mm、横40mm、厚み50μm)を基板フィルムとして用い、スパッタ法において基板フィルムの温度を300℃から150℃に変更した以外は、実施例1と同様にして、基板フィルム(PET)上にITOからなる薄膜が積層された比較のための導電性積層体を得た。
上記一般式(1)で表される繰り返し単位を含有するポリイミドからなる基板フィルムを製造せず、該基板フィルムの代わりに市販のポリイミドフィルム(三菱ガス化学株式会社製の商品名「ネオプリムL-3430」、縦:40mm、横40mm、厚み100μm)を基板フィルムとして用いた以外は、実施例1と同様にして、基板フィルム(ネオプリム)上にITOからなる薄膜が積層された比較のための導電性積層体を得た。
ポリイミドからなる無色透明の基板フィルムとして、実施例3~7で得られたポリイミドからなる無色透明のフィルム(縦100mm、横100mm、厚み50μm)をそれぞれ用いた以外は実施例1と同様にして、ポリイミドからなる基板フィルム上にITOからなる薄膜が積層された透明導電性積層体をそれぞれ製造した。
Claims (8)
- ポリイミドからなる基板フィルムと、該基板フィルム上に積層された導電性材料からなる薄膜とを備え、
前記ポリイミドが、下記一般式(1):
で表される繰り返し単位を少なくとも1種含有し、ガラス転移温度が350℃~450℃であり、且つ、窒素雰囲気下、昇温速度5℃/分の条件で50℃~200℃の温度範囲において長さの変化を測定して求められる線膨張係数が30ppm/℃以下であるポリイミドである、透明導電性積層体。 - 前記一般式(1)中のR4が、下記一般式(2)~(5):
で表される基のうちの1種である請求項1に記載の透明導電性積層体。 - 前記ポリイミドが、前記一般式(1)で表され、且つ、該式中のR4が、前記一般式(4)で表される基;及び前記Qが-CONH-、-COO-、-CO-、-C6H4-で表される基のうちの1種である前記一般式(5)で表される基;からなる群から選択される1種の基である繰り返し単位と、
前記一般式(1)で表され、且つ、該式中のR4が、前記一般式(2)で表される基;及び前記Qが-O-、-S-、-CH2-、-O-C6H4-O-で表される基のうちの1種である前記一般式(5)で表される基;からなる群から選択される1種の基である繰り返し単位と、
を含有してなる請求項2に記載の透明導電性積層体。 - 前記ポリイミドが、前記一般式(1)で表され、且つ、該式中のR4が、前記一般式(4)で表される基;及び前記Qが-CONH-、-COO-で表される基のうちの1種である前記一般式(5)で表される基;からなる群から選択される1種の基である繰り返し単位と、
前記一般式(1)で表され、且つ、該式中のR4が、前記Qが-O-、-CH2-で表される基のうちの1種である前記一般式(5)で表される基からなる群から選択される1種の基である繰り返し単位と、
を含有してなる請求項2又は3に記載の透明導電性積層体。 - 請求項1~4のうちのいずれか一項に記載の透明導電性積層体を備えるタッチパネル。
- 請求項1~4のうちのいずれか一項に記載の透明導電性積層体を備える太陽電池。
- 請求項1~4のうちのいずれか一項に記載の透明導電性積層体を備える表示装置。
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US14/237,635 US9768328B2 (en) | 2011-08-08 | 2012-08-03 | Transparent film, transparent electro-conductive laminate, and touch panel, solar cell, and display device using the same |
JP2013528008A JP5973442B2 (ja) | 2011-08-08 | 2012-08-03 | 透明フィルム、透明導電性積層体、並びに、それを用いたタッチパネル、太陽電池及び表示装置 |
KR1020147005940A KR101891374B1 (ko) | 2011-08-08 | 2012-08-03 | 투명 필름, 투명 도전성 적층체, 및 그것을 이용한 터치 패널, 태양 전지 및 표시 장치 |
CN201280039129.2A CN103733274B (zh) | 2011-08-08 | 2012-08-03 | 透明薄膜、透明导电性层叠体、以及使用其的触摸屏、太阳能电池和显示装置 |
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2012
- 2012-08-03 US US14/237,635 patent/US9768328B2/en active Active
- 2012-08-03 EP EP12822029.0A patent/EP2743936A4/en not_active Withdrawn
- 2012-08-03 JP JP2013528008A patent/JP5973442B2/ja active Active
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Publication number | Publication date |
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US20140224318A1 (en) | 2014-08-14 |
JP6246274B2 (ja) | 2017-12-13 |
KR101891374B1 (ko) | 2018-08-24 |
JPWO2013021942A1 (ja) | 2015-03-05 |
TW201321432A (zh) | 2013-06-01 |
CN103733274B (zh) | 2016-04-13 |
TWI548678B (zh) | 2016-09-11 |
JP5973442B2 (ja) | 2016-08-23 |
EP2743936A1 (en) | 2014-06-18 |
US9768328B2 (en) | 2017-09-19 |
KR20140056324A (ko) | 2014-05-09 |
EP2743936A4 (en) | 2015-04-08 |
JP2016194089A (ja) | 2016-11-17 |
CN103733274A (zh) | 2014-04-16 |
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