WO2012124664A1 - ポリイミド前駆体及びポリイミド - Google Patents
ポリイミド前駆体及びポリイミド Download PDFInfo
- Publication number
- WO2012124664A1 WO2012124664A1 PCT/JP2012/056310 JP2012056310W WO2012124664A1 WO 2012124664 A1 WO2012124664 A1 WO 2012124664A1 JP 2012056310 W JP2012056310 W JP 2012056310W WO 2012124664 A1 WO2012124664 A1 WO 2012124664A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- polyimide
- polyimide precursor
- tetracarboxylic acid
- component
- Prior art date
Links
- 229920001721 polyimide Polymers 0.000 title claims abstract description 333
- 239000004642 Polyimide Substances 0.000 title claims abstract description 256
- 239000002243 precursor Substances 0.000 title claims abstract description 171
- 239000000126 substance Substances 0.000 claims abstract description 136
- 125000003118 aryl group Chemical group 0.000 claims abstract description 36
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 18
- 125000005103 alkyl silyl group Chemical group 0.000 claims abstract description 9
- 239000001257 hydrogen Substances 0.000 claims abstract description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 7
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 5
- 150000004985 diamines Chemical class 0.000 claims description 137
- 150000000000 tetracarboxylic acids Chemical class 0.000 claims description 103
- 239000002904 solvent Substances 0.000 claims description 97
- 238000002834 transmittance Methods 0.000 claims description 81
- 239000000203 mixture Substances 0.000 claims description 49
- 239000000758 substrate Substances 0.000 claims description 44
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 42
- 125000004432 carbon atom Chemical group C* 0.000 claims description 31
- -1 aliphatic tetracarboxylic acid Chemical class 0.000 claims description 25
- 230000003287 optical effect Effects 0.000 claims description 22
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 18
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 12
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- 125000000217 alkyl group Chemical group 0.000 claims description 6
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 6
- 229910052717 sulfur Inorganic materials 0.000 claims description 6
- 125000004434 sulfur atom Chemical group 0.000 claims description 6
- CYSGHNMQYZDMIA-UHFFFAOYSA-N 1,3-Dimethyl-2-imidazolidinon Chemical compound CN1CCN(C)C1=O CYSGHNMQYZDMIA-UHFFFAOYSA-N 0.000 claims description 4
- ZFPGARUNNKGOBB-UHFFFAOYSA-N 1-Ethyl-2-pyrrolidinone Chemical compound CCN1CCCC1=O ZFPGARUNNKGOBB-UHFFFAOYSA-N 0.000 claims description 4
- 125000000962 organic group Chemical group 0.000 claims description 3
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 113
- 239000010408 film Substances 0.000 description 38
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 27
- 238000006243 chemical reaction Methods 0.000 description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 26
- 238000000034 method Methods 0.000 description 26
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 description 24
- 239000000178 monomer Substances 0.000 description 23
- 238000004817 gas chromatography Methods 0.000 description 21
- 229910001873 dinitrogen Inorganic materials 0.000 description 20
- 239000002253 acid Substances 0.000 description 19
- 239000003795 chemical substances by application Substances 0.000 description 15
- 238000005452 bending Methods 0.000 description 13
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 12
- 238000004458 analytical method Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- 125000006158 tetracarboxylic acid group Chemical group 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 239000011521 glass Substances 0.000 description 7
- 229920005575 poly(amic acid) Polymers 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- NVKGJHAQGWCWDI-UHFFFAOYSA-N 4-[4-amino-2-(trifluoromethyl)phenyl]-3-(trifluoromethyl)aniline Chemical compound FC(F)(F)C1=CC(N)=CC=C1C1=CC=C(N)C=C1C(F)(F)F NVKGJHAQGWCWDI-UHFFFAOYSA-N 0.000 description 6
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- LAHCMYYCRFQUHP-UHFFFAOYSA-N 2-(4-azidophenyl)sulfanylisoindole-1,3-dione Chemical compound C1=CC(N=[N+]=[N-])=CC=C1SN1C(=O)C2=CC=CC=C2C1=O LAHCMYYCRFQUHP-UHFFFAOYSA-N 0.000 description 5
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 5
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010992 reflux Methods 0.000 description 5
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 4
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 4
- RPOHXHHHVSGUMN-UHFFFAOYSA-N 1-n,4-n-bis(4-aminophenyl)benzene-1,4-dicarboxamide Chemical compound C1=CC(N)=CC=C1NC(=O)C1=CC=C(C(=O)NC=2C=CC(N)=CC=2)C=C1 RPOHXHHHVSGUMN-UHFFFAOYSA-N 0.000 description 4
- NJHOBWAEBBSZLP-UHFFFAOYSA-N 2-n,4-n-bis(4-aminophenyl)-6-n-phenyl-1,3,5-triazine-2,4,6-triamine Chemical compound C1=CC(N)=CC=C1NC1=NC(NC=2C=CC=CC=2)=NC(NC=2C=CC(N)=CC=2)=N1 NJHOBWAEBBSZLP-UHFFFAOYSA-N 0.000 description 4
- HLBLWEWZXPIGSM-UHFFFAOYSA-N 4-Aminophenyl ether Chemical compound C1=CC(N)=CC=C1OC1=CC=C(N)C=C1 HLBLWEWZXPIGSM-UHFFFAOYSA-N 0.000 description 4
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 4
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 4
- 150000004984 aromatic diamines Chemical class 0.000 description 4
- XOZUGNYVDXMRKW-UHFFFAOYSA-N carbamoyliminourea Chemical compound NC(=O)N=NC(N)=O XOZUGNYVDXMRKW-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 4
- 238000004040 coloring Methods 0.000 description 4
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 4
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 4
- 125000006159 dianhydride group Chemical group 0.000 description 4
- 150000005690 diesters Chemical class 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- JBFHTYHTHYHCDJ-UHFFFAOYSA-N gamma-caprolactone Chemical compound CCC1CCC(=O)O1 JBFHTYHTHYHCDJ-UHFFFAOYSA-N 0.000 description 4
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000005340 laminated glass Substances 0.000 description 4
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000012046 mixed solvent Substances 0.000 description 4
- QWVGKYWNOKOFNN-UHFFFAOYSA-N o-cresol Chemical compound CC1=CC=CC=C1O QWVGKYWNOKOFNN-UHFFFAOYSA-N 0.000 description 4
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- 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 3
- QYIMZXITLDTULQ-UHFFFAOYSA-N 4-(4-amino-2-methylphenyl)-3-methylaniline Chemical compound CC1=CC(N)=CC=C1C1=CC=C(N)C=C1C QYIMZXITLDTULQ-UHFFFAOYSA-N 0.000 description 3
- 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 3
- LGTGOCSQAOUUFP-UHFFFAOYSA-N 4-amino-n-[4-[(4-aminobenzoyl)amino]phenyl]benzamide Chemical compound C1=CC(N)=CC=C1C(=O)NC(C=C1)=CC=C1NC(=O)C1=CC=C(N)C=C1 LGTGOCSQAOUUFP-UHFFFAOYSA-N 0.000 description 3
- 125000002723 alicyclic group Chemical group 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 150000008064 anhydrides Chemical class 0.000 description 3
- 150000001491 aromatic compounds Chemical class 0.000 description 3
- HFACYLZERDEVSX-UHFFFAOYSA-N benzidine Chemical compound C1=CC(N)=CC=C1C1=CC=C(N)C=C1 HFACYLZERDEVSX-UHFFFAOYSA-N 0.000 description 3
- 239000004305 biphenyl Substances 0.000 description 3
- 235000010290 biphenyl Nutrition 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- UKJLNMAFNRKWGR-UHFFFAOYSA-N cyclohexatrienamine Chemical group NC1=CC=C=C[CH]1 UKJLNMAFNRKWGR-UHFFFAOYSA-N 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 238000006358 imidation reaction Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 3
- 238000007363 ring formation reaction Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- SIOVKLKJSOKLIF-HJWRWDBZSA-N trimethylsilyl (1z)-n-trimethylsilylethanimidate Chemical compound C[Si](C)(C)OC(/C)=N\[Si](C)(C)C SIOVKLKJSOKLIF-HJWRWDBZSA-N 0.000 description 3
- 230000004580 weight loss Effects 0.000 description 3
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 2
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 description 2
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 2
- 238000005160 1H NMR spectroscopy Methods 0.000 description 2
- PTTPXKJBFFKCEK-UHFFFAOYSA-N 2-Methyl-4-heptanone Chemical compound CC(C)CC(=O)CC(C)C PTTPXKJBFFKCEK-UHFFFAOYSA-N 0.000 description 2
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 2
- NQBXSWAWVZHKBZ-UHFFFAOYSA-N 2-butoxyethyl acetate Chemical compound CCCCOCCOC(C)=O NQBXSWAWVZHKBZ-UHFFFAOYSA-N 0.000 description 2
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 2
- SVONRAPFKPVNKG-UHFFFAOYSA-N 2-ethoxyethyl acetate Chemical compound CCOCCOC(C)=O SVONRAPFKPVNKG-UHFFFAOYSA-N 0.000 description 2
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- GTALYBOAEVNYOZ-UHFFFAOYSA-N 3-(2,3-dicarboxycyclohexyl)cyclohexane-1,2-dicarboxylic acid Chemical compound OC(=O)C1C(C(=O)O)CCCC1C1C(C(O)=O)C(C(O)=O)CCC1 GTALYBOAEVNYOZ-UHFFFAOYSA-N 0.000 description 2
- JUZVXGMLUGCXEQ-UHFFFAOYSA-N 3-(3,4-dicarboxycyclohexyl)cyclohexane-1,2-dicarboxylic acid Chemical compound C1C(C(O)=O)C(C(=O)O)CCC1C1C(C(O)=O)C(C(O)=O)CCC1 JUZVXGMLUGCXEQ-UHFFFAOYSA-N 0.000 description 2
- OQEBBZSWEGYTPG-UHFFFAOYSA-N 3-aminobutanoic acid Chemical compound CC(N)CC(O)=O OQEBBZSWEGYTPG-UHFFFAOYSA-N 0.000 description 2
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- LJMPOXUWPWEILS-UHFFFAOYSA-N 3a,4,4a,7a,8,8a-hexahydrofuro[3,4-f][2]benzofuran-1,3,5,7-tetrone Chemical compound C1C2C(=O)OC(=O)C2CC2C(=O)OC(=O)C21 LJMPOXUWPWEILS-UHFFFAOYSA-N 0.000 description 2
- BKQWDTFZUNGWNV-UHFFFAOYSA-N 4-(3,4-dicarboxycyclohexyl)cyclohexane-1,2-dicarboxylic acid Chemical compound C1C(C(O)=O)C(C(=O)O)CCC1C1CC(C(O)=O)C(C(O)=O)CC1 BKQWDTFZUNGWNV-UHFFFAOYSA-N 0.000 description 2
- WXNZTHHGJRFXKQ-UHFFFAOYSA-N 4-chlorophenol Chemical compound OC1=CC=C(Cl)C=C1 WXNZTHHGJRFXKQ-UHFFFAOYSA-N 0.000 description 2
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- ZPAKUZKMGJJMAA-UHFFFAOYSA-N Cyclohexane-1,2,4,5-tetracarboxylic acid Chemical compound OC(=O)C1CC(C(O)=O)C(C(O)=O)CC1C(O)=O ZPAKUZKMGJJMAA-UHFFFAOYSA-N 0.000 description 2
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- CJYIPJMCGHGFNN-UHFFFAOYSA-N bicyclo[2.2.1]heptane-2,3,5,6-tetracarboxylic acid Chemical compound C1C2C(C(O)=O)C(C(=O)O)C1C(C(O)=O)C2C(O)=O CJYIPJMCGHGFNN-UHFFFAOYSA-N 0.000 description 2
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- 239000003054 catalyst Substances 0.000 description 2
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- 229910052801 chlorine Inorganic materials 0.000 description 2
- DCFKHNIGBAHNSS-UHFFFAOYSA-N chloro(triethyl)silane Chemical compound CC[Si](Cl)(CC)CC DCFKHNIGBAHNSS-UHFFFAOYSA-N 0.000 description 2
- KQIADDMXRMTWHZ-UHFFFAOYSA-N chloro-tri(propan-2-yl)silane Chemical compound CC(C)[Si](Cl)(C(C)C)C(C)C KQIADDMXRMTWHZ-UHFFFAOYSA-N 0.000 description 2
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- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000003759 ester based solvent Substances 0.000 description 2
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- MHSKRLJMQQNJNC-UHFFFAOYSA-N terephthalamide Chemical compound NC(=O)C1=CC=C(C(N)=O)C=C1 MHSKRLJMQQNJNC-UHFFFAOYSA-N 0.000 description 1
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- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
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Classifications
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- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
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- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
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- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- 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
- H01L31/03926—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 comprising a flexible substrate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0026—Transparent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0082—Flexural strength; Flexion stiffness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2379/00—Characterised by the use 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 C08J2361/00 - C08J2377/00
- C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2379/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- 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
Definitions
- the present invention relates to a polyimide having excellent characteristics such as transparency, bending resistance, and high heat resistance, and also having an extremely low linear expansion coefficient and excellent solvent resistance, and a precursor thereof.
- the present invention has excellent properties such as transparency, bending resistance, and high heat resistance, and further includes a polyimide having a very low linear expansion coefficient, excellent solvent resistance, and flame retardancy, and a precursor thereof. Also related.
- Aromatic polyimide is essentially yellowish brown due to intramolecular conjugation and the formation of charge transfer complexes. For this reason, as a means to suppress coloration, for example, introduction of fluorine atoms into the molecule, imparting flexibility to the main chain, introduction of bulky groups as side chains, etc. inhibits intramolecular conjugation and charge transfer complex formation. Thus, a method for expressing transparency has been proposed. In addition, a method for expressing transparency by using a semi-alicyclic or fully alicyclic polyimide that does not form a charge transfer complex in principle has been proposed.
- Patent Document 1 in order to obtain a thin, light, and hard-to-break active matrix display device, a normal film forming process is used on a transparent polyimide film substrate in which a tetracarboxylic acid component residue is an aliphatic group. It is disclosed that a thin film transistor is formed to obtain a thin film transistor substrate.
- the polyimide specifically used here was prepared from tetracarboxylic acid component 1,2,4,5-cyclohexanetetracarboxylic dianhydride and diamine component 4,4′-diaminodiphenyl ether. Is.
- Patent Document 2 discloses a colorless transparent resin film made of polyimide that is excellent in colorless transparency, heat resistance, and flatness, which is used for transparent substrates, thin film transistor substrates, flexible wiring substrates, and the like of liquid crystal display elements and organic EL display elements.
- a production method obtained by a solution casting method using a specific drying step is disclosed.
- the polyimide used here is composed of 1,2,4,5-cyclohexanetetracarboxylic dianhydride as a tetracarboxylic acid component and ⁇ , ⁇ ′-bis (4-aminophenyl) -1, a diamine component. And those prepared from 4-diisopropylbenzene and 4,4′-bis (4-aminophenoxy) biphenyl.
- Patent Documents 3 and 4 include dicyclohexyltetracarboxylic acid as a tetracarboxylic acid component, and diaminodiphenyl ether, diaminodiphenylmethane, 1,4-bis (4-aminophenoxy) benzene, 1,3- Bis (4-aminophenoxy) benzene, 2,2-bis [4- (4-aminophenoxy) phenyl] propane, bis [4- (4-aminophenoxy) phenyl] sulfone, bis [4- (4-aminophenoxy) ) Phenyl] ether, a polyimide soluble in an organic solvent using metaphenylenediamine is described.
- Such a semi-alicyclic polyimide using an alicyclic tetracarboxylic dianhydride as a tetracarboxylic acid component and an aromatic diamine as a diamine component has both transparency, bending resistance and high heat resistance.
- a semi-alicyclic polyimide generally has a large linear expansion coefficient of 50 ppm / K or more, the difference in linear expansion coefficient from a conductor such as metal is large, and warping occurs when a circuit board is formed. There is a problem that a problem such as an increase may occur, and there is a problem that a fine circuit forming process such as a display application is not easy.
- Such semi-alicyclic polyimides tend to have insufficient solvent resistance, which may cause problems in the circuit formation process. Moreover, it may be inferior to a flame retardance and the safety
- security of an electronic device may fall.
- the present invention has been made in view of the above situation, and in a semi-alicyclic polyimide using an alicyclic tetracarboxylic dianhydride as a tetracarboxylic acid component and an aromatic diamine as a diamine component,
- the purpose is to improve the expansion coefficient and solvent resistance.
- Another object of the present invention is to improve the linear expansion coefficient, solvent resistance, and flame retardance in polyimides using aliphatic tetracarboxylic dianhydrides as tetracarboxylic acid components.
- the present invention provides a polyimide having excellent characteristics such as transparency, bending resistance, and high heat resistance, and also having a very low linear expansion coefficient and excellent solvent resistance, and a precursor thereof. Objective.
- the present invention provides a polyimide having excellent properties such as transparency, bending resistance, and high heat resistance, and also having an extremely low linear expansion coefficient, excellent solvent resistance, and flame retardancy, and a precursor thereof. It is also intended to provide.
- the present invention relates to the following items. 1.
- the polyimide precursor characterized by including the repeating unit represented by following Chemical formula (1).
- A is a tetravalent group having at least one aliphatic 6-membered ring in the chemical structure and no aromatic ring
- B is at least one amide bond and aromatic group in the chemical structure.
- a divalent group having an aromatic ring, or A is an aliphatic tetravalent group
- B is a divalent group having at least one chemical structure of the following chemical formula (2) in the chemical structure: It is the basis of.
- X 1 and X 2 are each independently hydrogen, an alkyl group having 1 to 6 carbon atoms, or an alkylsilyl group having 3 to 9 carbon atoms.
- R 1 is a direct bond, a CH 2 group, a C (CH 3 ) 2 group, a SO 2 group, a Si (CH 3 ) 2 group, a C (CF 3 ) 2 group, an oxygen atom, or a sulfur atom.
- R 2 represents a CH 2 group, a CH 2 CH 2 group, an oxygen atom, or a sulfur atom.
- R 3 and R 4 are each independently a CH 2 group, a CH 2 CH 2 group, an oxygen atom, or a sulfur atom.
- Ar 1 , Ar 2 and Ar 3 are each independently a divalent group having an aromatic ring having 6 to 18 carbon atoms, and n1 is an integer of 0 to 5)
- Ar 4 , Ar 5 , Ar 6 , Ar 7 and Ar 8 are each independently a divalent group having an aromatic ring having 6 to 18 carbon atoms, and n2 is 0 to 5) (It is an integer.)
- Ar 9 , Ar 10 , Ar 11 , Ar 12, and Ar 13 are each independently a divalent group having an aromatic ring having 6 to 18 carbon atoms, and n3 is 0 to 5 (It is an integer.)
- Ar 14 and Ar 15 are each independently a divalent aromatic group having 6 to 18 carbon atoms, and R 5 is a hydrogen atom or a monovalent organic group.
- a diamine component containing 70 mol% or more of a diamine component giving a repeating unit represented by the chemical formula (1) and 30 mol% or less of other diamine components in 100 mol% of all diamine components Item 4. The polyimide precursor according to any one of Items 1 to 3, wherein 5.
- p-phenylenediamine benzidine, 2,2′-bis (trifluoromethyl) benzidine, 3,3′-dimethylbenzidine, Item 5.
- the polyimide precursor according to Item 4 comprising at least 30 mol% of at least one of 2,2'-dimethylbenzidine and trans-cyclohexanediamine. 6). Any of Items 1 to 5 above, wherein the polyimide precursor has a logarithmic viscosity (temperature: 30 ° C., concentration: 0.5 g / dL, solvent: N, N-dimethylacetamide) of 0.2 dL / g or more.
- Tetracarboxylic acid component having a light transmittance of 70% or more (however, the light transmittance of the tetracarboxylic acid component is a wavelength of 400 nm with respect to a solution obtained by dissolving in a 2N sodium hydroxide solution at a concentration of 10% by mass, optical path)
- a diamine component having a light transmittance of 30% or more (however, the light transmittance of the diamine component is measured in methanol, water, N, N-dimethylacetamide, acetic acid or a hydrochloric acid solution thereof).
- a polyimide precursor solution composition in which the polyimide precursor according to any one of Items 1 to 9 is dissolved in a solvent, A polyimide precursor solution composition, wherein the solvent has a light transmittance of 89% or more at a wavelength of 400 nm and an optical path length of 1 cm.
- Polyimide comprising a repeating unit represented by the following chemical formula (5).
- A is a tetravalent group having at least one aliphatic 6-membered ring in the chemical structure and no aromatic ring
- B is at least one amide bond and aromatic group in the chemical structure.
- a divalent group having an aromatic ring, or A is an aliphatic tetravalent group
- B is a divalent group having at least one chemical structure of the chemical formula (2) in the chemical structure.
- the base of 12 Item 11 is characterized in that the total light transmittance (average light transmittance at a wavelength of 380 nm to 780 nm) in a film having a thickness of 10 ⁇ m is 70% or more, preferably 80% or more, more preferably 85% or more.
- Item 11 or 12 above, wherein the light transmittance at a wavelength of 400 nm in a film having a thickness of 10 ⁇ m is 50% or more, preferably 60% or more, more preferably 70% or more, particularly preferably 75% or more.
- An average linear expansion coefficient at 50 to 200 ° C. in a film having a thickness of 10 ⁇ m is 50 ppm / K or less, preferably 45 ppm / K or less, more preferably 40 ppm / K or less, and particularly preferably 20 ppm / K or less.
- Item 14 The polyimide according to any one of Items 11 to 13.
- a in the chemical formula (5) is an aliphatic tetravalent group
- B is a divalent group having at least one chemical structure in the chemical formula (2) in the chemical structure, Item 15.
- the polyimide according to any one of Items 11 to 14, wherein the polyimide is 22% (volume fraction) or more.
- a polyimide obtained by reacting an aliphatic tetracarboxylic acid component and a diamine component, and having an oxygen index of 22% (volume fraction) or more.
- Item 15 A display, a touch panel, or a sun, which is formed using a polyimide obtained by using the polyimide precursor solution composition according to Item 10 or the polyimide according to any one of Items 11 to 16. Battery substrate.
- the present invention it is possible to provide a polyimide having excellent characteristics such as transparency, bending resistance, and high heat resistance, and also having a very low linear expansion coefficient and excellent solvent resistance, and a precursor thereof. Since the polyimide obtained from the polyimide precursor of the present invention and the polyimide of the present invention are highly transparent and have a low linear expansion coefficient, it is easy to form a fine circuit, and also has solvent resistance. It can be suitably used to form a substrate for display applications. Moreover, the polyimide of this invention can be used suitably also in order to form the board
- a polyimide having excellent characteristics such as transparency, bending resistance, and high heat resistance, and also having a very low linear expansion coefficient, excellent solvent resistance, and flame retardancy, and a precursor thereof. can be provided.
- the polyimide obtained from the polyimide precursor of the present invention and the polyimide of the present invention are highly transparent, have a low linear expansion coefficient, and can easily form a fine circuit, and also have solvent resistance and flame resistance. Since it has together, it can use suitably in order to form the board
- the polyimide precursor of the present invention is a polyimide precursor configured to include a repeating unit represented by the chemical formula (1).
- the polyimide precursor of the present invention comprises an alicyclic tetracarboxylic acid component having at least one aliphatic 6-membered ring in the chemical structure and no aromatic ring, and at least one in the chemical structure.
- It is a polyimide precursor (B) obtained from the diamine component which has a chemical structure.
- the polyimide precursor of the present invention may be a polyimide precursor obtained by using other tetracarboxylic acid components and / or diamine components.
- the chemical formula (1) A tetracarboxylic acid component that gives a repeating unit represented by the formula (that is, in the case of a polyimide precursor (A), an alicyclic compound having at least one aliphatic 6-membered ring in its chemical structure and no aromatic ring.
- a tetracarboxylic acid component which is an aliphatic tetracarboxylic acid component in the case of the polyimide precursor (B)), and a tetracarboxylic acid containing 30 mol% or less of the other tetracarboxylic acid component.
- Component and diamine component giving a repeating unit represented by chemical formula (1) in 100 mol% of all diamine components (that is, in the case of polyimide precursor (A))
- an aromatic diamine component having at least one amide bond and an aromatic ring in the chemical structure.
- at least one chemical structure of the following chemical formula (2) is included in the chemical structure. It may be a polyimide precursor obtained from a diamine component containing 70 mol% or more and other diamine components at 30 mol% or less.
- the tetracarboxylic acid component used in the polyimide precursor (A) of the present invention is an alicyclic tetracarboxylic acid component having at least one aliphatic 6-membered ring and no aromatic ring in the chemical structure.
- the 6-membered ring may be a bridged ring type in which carbon atoms constituting the ring (inside the 6-membered ring) further form a ring by a chemical bond.
- a tetracarboxylic acid component having a highly symmetric 6-membered ring structure is preferable because it enables dense packing of polymer chains and is excellent in solvent resistance, heat resistance and mechanical strength of polyimide.
- the tetracarboxylic acid component is a polyalicyclic type in which a plurality of 6-membered rings are constituted by two or more common carbon atoms, and the carbon atoms in which the 6-membered rings form a ring further form a ring by a chemical bond.
- the formed crosslinked ring type is more preferable because good heat resistance, solvent resistance, and low linear expansion coefficient of polyimide are easily achieved.
- the tetravalent group derived from the tetracarboxylic acid component represented by A in the chemical formula (1) for example, groups of the chemical formulas (3-1) to (3-4) are preferable, and the chemical formula (3 -3) or (3-4) is more preferable, and the group represented by the chemical formula (3-4) is particularly preferable.
- the groups represented by the chemical formulas (3-1) and (3-2) are cross-linked, so that the polyimide has excellent heat resistance and linear Since the expansion coefficient is small, it is more preferable.
- the group of the chemical formula (3-4) is particularly preferable because it has a polyalicyclic / bridged ring type and is more excellent in heat resistance of polyimide.
- Examples of the tetracarboxylic acid component that introduces the chemical structure of the chemical formula (3-1) or (3-2) include cyclohexane-1,2,4,5-tetracarboxylic acid and [1,1′-bi (cyclohexane).
- acid dianhydrides are preferable because they have excellent solvent resistance and mechanical strength of polyimide.
- tetracarboxylic acid components are not particularly limited, however, by performing separation and purification, the ratio of specific stereoisomers is 80% or more, more preferably 90% or more, and particularly preferably 95% or more. Improves the heat resistance and solvent resistance.
- Specific stereoisomers of such tetracarboxylic acid components include 1R, 2S, 4S, 5R-cyclohexanetetracarboxylic acid (hereinafter sometimes abbreviated as PMTA-HS, and its acid dianhydride may be abbreviated as PMDA-HS), 1S, 2S, 4R, 5R-cyclohexanetetracarboxylic acid (hereinafter sometimes abbreviated as PMTA-HH, and its acid dianhydride may be abbreviated as PMDA-HH), (1R, 1 ′S, 3R, 3 ′S, 4R, 4 ′S) dicyclohexyl-3,3 ′, 4,4′-tetracarboxylic acid (hereinafter sometimes abbreviated as trans-DCTA, and further its acid dianhydride Things may be abbreviated as trans-DCDA) (1R, 1 ′S, 3R, 3 ′S, 4S, 4′R) dicyclohexyl-3,3
- Examples of the bridged ring type or polyalicyclic / bridged ring type tetracarboxylic acid component that introduces the chemical structure of the chemical formula (3-3) or (3-4) include, for example, octahydropentalene-1,3,4, 6-tetracarboxylic acid, bicyclo [2.2.1] heptane-2,3,5,6-tetracarboxylic acid, 6- (carboxymethyl) bicyclo [2.2.1] heptane-2,3,5- Tricarboxylic acid, bicyclo [2.2.2] octane-2,3,5,6-tetracarboxylic acid, bicyclo [2.2.2] oct-5-ene-2,3,7,8-tetracarboxylic acid , Tricyclo [4.2.2.02,5] decane-3,4,7,8-tetracarboxylic acid, tricyclo [4.2.2.02,5] dec-7-ene-3,4,9 , 10-tetracarboxylic acid
- tetracarboxylic acid components are not particularly limited, but they are low by performing separation and purification and the ratio of a specific stereoisomer is 70% or more, more preferably 90% or more, and particularly preferably 95% or more.
- a polyimide having a linear expansion coefficient can be obtained.
- Specific stereoisomers of such tetracarboxylic acid components include 1rC7-bicyclo [2.2.2] octane-2t, 3t, 5c, 6c-tetracarboxylic acid (hereinafter sometimes abbreviated as cis / trans-BTTA-H, and its anhydride is further referred to as cis / trans-BTA-H.
- the above-described tetracarboxylic acid components may be used alone or in combination of two or more.
- aromatic or aliphatic tetracarboxylic acid components generally used in polyimide are used in a small amount (preferably 30 mol% or less, more preferably 10 mol%) within the range in which the characteristics of the polyimide of the present invention can be expressed.
- more preferably less than 10 mol%) can be used in combination.
- aromatic or aliphatic tetracarboxylic acid components that can be used in the present invention include, for example, 2,2-bis (3,4-dicarboxyphenyl) hexafluoropropane, 4- (2,5-dioxy).
- the tetracarboxylic acid component used in the present invention is not particularly limited, but the purity (in the case of containing a plurality of stereoisomers, the purity is regarded as the same component without distinguishing them)
- the value of the highest purity tetracarboxylic acid component or the purity of all tetracarboxylic acid components used is determined individually, and the average value of the purity weighted by the mass ratio used, for example, purity 100 99% or more of the tetracarboxylic acid component is used, and when 30 parts by mass of the 90% pure tetracarboxylic acid component is used, the purity of the tetracarboxylic acid component used is calculated to be 97%).
- the purity is 99.5% or more.
- the purity is less than 98%, the molecular weight of the polyimide precursor is not sufficient, and the heat resistance of the resulting polyimide may be inferior.
- the purity is a value obtained from gas chromatography analysis or 1 H-NMR analysis. In the case of tetracarboxylic dianhydride, the purity can be obtained as a tetracarboxylic acid by performing a hydrolysis treatment.
- the tetracarboxylic acid component used in the present invention is not particularly limited, but the light transmittance (in the case of using a plurality of types of tetracarboxylic acid components, the value of the tetracarboxylic acid component having the best light transmittance or all of the used values.
- the purity of the tetracarboxylic acid component is individually determined, and an average value of the light transmittance weighted by the mass ratio to be used, for example, 70 parts by weight of a tetracarboxylic acid component having a light transmittance of 100% and a light transmittance of 90%.
- the light transmittance of the tetracarboxylic acid component used is calculated as 97%.) Is 70% or more, preferably 80% or more, more preferably 90% or more. It is preferable that However, the light transmittance here is a transmittance of a wavelength of 400 nm and an optical path length of 1 cm with respect to a solution obtained by dissolving in a 2N sodium hydroxide solution at a concentration of 10% by mass.
- the light transmittance of the tetracarboxylic acid component is 70% or more, coloring of the resulting polyimide is reduced, which is favorable.
- the diamine component used in the polyimide precursor (A) of the present invention is a diamine component having at least one amide bond and an aromatic ring in the chemical structure.
- the diamine component preferably has one or more amide bonds, preferably a plurality of amide bonds, in the chemical structure.
- the solubility of a polyimide precursor may fall.
- the divalent group derived from the diamine component represented by B in the chemical formula (1) for example, the groups of the chemical formulas (4-1) to (4-3) are preferable.
- Ar 1 to Ar 13 in the chemical formulas (4-1) to (4-3) are each independently a divalent group having an aromatic ring having 6 to 18 carbon atoms.
- the aromatic ring is a divalent aromatic compound such as benzene, biphenyl, terphenyl, naphthalene, anthracene, etc.
- a part of the hydrogen is an alkyl group having 1 to 3 carbon atoms, a halogen group, a nitro group, It may be substituted with a group, a hydroxyl group, a carboxylic acid group or the like.
- the divalent aromatic compound benzene and biphenyl are preferable since the light transmittance of polyimide is excellent.
- the bonding position of the divalent aromatic compound (bonding position forming the polyimide main chain) is para-position in benzene, biphenylene and terphenyl, and is 2,6-position in naphthalene and anthracene. Is preferable because the linear expansion coefficient of polyimide can be lowered.
- Examples of the diamine component that introduces the chemical structure of the chemical formulas (4-1) to (4-3) include 4,4′-diaminobenzanilide, 3′-chloro-4,4′-diaminobenzanilide, 2 ′ -Chloro-4,4'-diaminobenzanilide, 2 ', 6'-dichloro-4,4'-diaminobenzanilide, 3'-methyl-4,4'-diaminobenzanilide, 2'-methyl-4, 4'-diaminobenzanilide, 2 ', 6'-dimethyl-4,4'-diaminobenzanilide, 3'-trifluoromethyl-4,4'-diaminobenzanilide, 2'-trifluoromethyl-4,4 '-Diaminobenzanilide, 3-chloro-4,4'-diaminobenzanilide, 3-bromo-4,4'-diaminobenzanilide
- the diamine component As the diamine component, the diamine components as described above may be used alone, or a plurality of types may be used in combination.
- diamine components generally used in polyimide are contained in a small amount (preferably 30 mol% or less, more preferably 10 mol% or less, more preferably 10 mol) within the range in which the characteristics of the polyimide of the present invention can be expressed. %)) Can also be used together.
- diamine components used in combination include p-phenylenediamine, benzidine, 3,3′-dimethylbenzidine, 2,2′-dimethylbenzidine, 2,2′-bis (trifluoromethyl) benzidine, bis (aminophenoxy), in particular. ) Benzene or trans-cyclohexanediamine is preferred because the linear expansion coefficient of polyimide can be lowered.
- the diamine component used in the present invention is not particularly limited, but the purity (in the case of using a plurality of types of diamine components, the value of the highest purity diamine component or the purity of all the diamine components used is individually determined and used.
- the average value of the purity weighted by the ratio for example, when 70 parts by mass of a diamine component having a purity of 100% and 30 parts by mass of a diamine component having a purity of 90% are used, the purity of the diamine component used is 97% Calculated) is 99% or more, more preferably 99.5% or more.
- the purity is less than 98%, the molecular weight of the polyimide precursor is not sufficient, and the heat resistance of the resulting polyimide may be inferior.
- the purity is a value obtained from gas chromatography analysis or liquid chromatography analysis.
- the diamine component used in the present invention is not particularly limited, but the light transmittance (in the case of using plural kinds of diamine components, the value of the diamine component having the best light transmittance, or the purity of all the diamine components used). Obtained individually, and the average value of the light transmittance weighted by the mass ratio to be used, for example, 70 parts by weight of a diamine component having a light transmittance of 100%, and 30 parts by weight of a diamine component having a light transmittance of 90%, The light transmittance of the diamine component used is calculated to be 97%.) Is preferably 30% or more.
- the light transmittance here is a transmission having a wavelength of 400 nm and an optical path length of 1 cm with respect to a solution obtained by dissolving 8% by mass in methanol, water, N, N-dimethylacetamide, acetic acid or a hydrochloric acid solution thereof. Rate.
- the light transmittance of the diamine component is 30% or more, coloring of the resulting polyimide is reduced, which is favorable.
- the tetracarboxylic acid component used in the polyimide precursor (B) of the present invention is not particularly limited as long as it is an aliphatic tetracarboxylic acid component.
- the chemical structure has at least one aliphatic 6-membered ring and an aromatic ring. It is preferable that it is an alicyclic tetracarboxylic acid component that is not present, and the six-membered ring in the tetracarboxylic acid component may be plural, and the plural six-membered rings are constituted by two or more common carbon atoms. It doesn't matter.
- the 6-membered ring may be a bridged ring type in which carbon atoms constituting the ring (inside the 6-membered ring) further form a ring by a chemical bond.
- a tetracarboxylic acid component having a six-membered ring structure that is not asymmetrical and highly symmetric is preferable because it enables high-density packing of polymer chains and is excellent in solvent resistance, heat resistance, and mechanical strength of polyimide.
- the tetracarboxylic acid component is a polyalicyclic type in which a plurality of 6-membered rings are constituted by two or more common carbon atoms, and the carbon atoms in which the 6-membered rings form a ring further form a ring by a chemical bond.
- the formed crosslinked ring type is more preferable because good heat resistance, solvent resistance, and low linear expansion coefficient of polyimide are easily achieved.
- the tetravalent group derived from the tetracarboxylic acid component represented by A in the chemical formula (1) for example, groups of the chemical formulas (3-1) to (3-4) are preferable, and the chemical formula (3 -3) or (3-4) is more preferable, and the group represented by the chemical formula (3-4) is particularly preferable.
- the groups represented by the chemical formulas (3-1) and (3-2) are cross-linked, so that the polyimide has excellent heat resistance and linear Since the expansion coefficient is small, it is more preferable.
- the group of the chemical formula (3-4) is particularly preferable because it has a polyalicyclic / bridged ring type and is more excellent in heat resistance of polyimide.
- Examples of the tetracarboxylic acid component into which the chemical structure of the chemical formula (3-1) or (3-2) is introduced include the same as those mentioned for the polyimide precursor (A), and preferable ones are also the same. .
- the crosslinked ring-type or polyalicyclic / bridged-ring type tetracarboxylic acid component into which the chemical structure of the above formula (3-3) or (3-4) is introduced is the same as that mentioned for the polyimide precursor (A). The preferable thing is also the same.
- the above-described tetracarboxylic acid components may be used alone or in combination of two or more.
- aromatic or aliphatic tetracarboxylic acid components generally used in polyimide are used in a small amount (preferably 30 mol% or less, more preferably 10 mol%) within the range in which the characteristics of the polyimide of the present invention can be expressed.
- more preferably less than 10 mol%) can be used in combination.
- the tetracarboxylic acid component used in the present invention is not particularly limited, but the purity (in the case of containing a plurality of stereoisomers, the purity is regarded as the same component without distinguishing them)
- the value of the highest purity tetracarboxylic acid component or the purity of all tetracarboxylic acid components used is determined individually, and the average value of the purity weighted by the mass ratio used, for example, purity 100 99% or more of the tetracarboxylic acid component is used, and when 30 parts by mass of the 90% pure tetracarboxylic acid component is used, the purity of the tetracarboxylic acid component used is calculated to be 97%).
- the purity is 99.5% or more.
- the purity is less than 98%, the molecular weight of the polyimide precursor is not sufficient, and the heat resistance of the resulting polyimide may be inferior.
- the purity is a value obtained from gas chromatography analysis or 1 H-NMR analysis. In the case of tetracarboxylic dianhydride, the purity can be obtained as a tetracarboxylic acid by performing a hydrolysis treatment.
- the tetracarboxylic acid component used in the present invention is not particularly limited, but the light transmittance (in the case of using a plurality of types of tetracarboxylic acid components, the value of the tetracarboxylic acid component having the best light transmittance or all of the used values.
- the purity of the tetracarboxylic acid component is individually determined, and an average value of the light transmittance weighted by the mass ratio to be used, for example, 70 parts by weight of a tetracarboxylic acid component having a light transmittance of 100% and a light transmittance of 90%.
- the light transmittance of the tetracarboxylic acid component used is calculated as 97%.) Is 70% or more, preferably 80% or more, more preferably 90% or more. It is preferable that However, the light transmittance here is a transmittance of a wavelength of 400 nm and an optical path length of 1 cm with respect to a solution obtained by dissolving in a 2N sodium hydroxide solution at a concentration of 10% by mass.
- the light transmittance of the tetracarboxylic acid component is 70% or more, coloring of the resulting polyimide is reduced, which is favorable.
- the diamine component used in the polyimide precursor (B) of the present invention is a diamine component having at least one chemical structure of the chemical formula (2) in the chemical structure.
- the chemical structure of the chemical formula (2) is introduced into the structure by the diamine component.
- the intermolecular interaction is increased by the introduced chemical structure of the chemical formula (2). Etc. are considered to be improved.
- the chemical structure of the chemical formula (2) has two nitrogen atoms, it is possible to efficiently introduce nitrogen atoms into the resulting polyimide, and therefore flame retardancy (oxygen index as an index thereof) It is considered that the adhesiveness and the like are improved. Therefore, the diamine component preferably has one or more chemical structures of the chemical formula (2) in the chemical structure, preferably a plurality of chemical structures of the chemical formula (2).
- the divalent group derived from the diamine component represented by B in the chemical formula (1) for example, the group of the chemical formula (4-4) is preferable. That is, as the diamine component, a diamine represented by the following chemical formula (4-5) can be preferably used.
- Ar 14 and Ar 15 are each independently a divalent aromatic group having 6 to 18 carbon atoms, and R 5 is a hydrogen atom or a monovalent organic group.
- Examples of the diamine of the chemical formula (4-5) include 2,4-bis (4-aminoanilino) -1,3,5-triazine, 2,4-bis (4-aminoanilino) -6-methyl-1, 3,5-triazine, 2,4-bis (4-aminoanilino) -6-ethyl-1,3,5-triazine, 2,4-bis (4-aminoanilino) -6-phenyl-1,3,5- Triazine, 2,4-bis (4-aminoanilino) -6-amino-1,3,5-triazine, 2,4-bis (4-aminoanilino) -6-methylamino-1,3,5-triazine, 2 , 4-bis (4-aminoanilino) -6-dimethylamino-1,3,5-triazine, 2,4-bis (4-aminoanilino) -6-ethylamino-1,3,5-triazine,
- the diamine component As the diamine component, the diamine components as described above may be used alone, or a plurality of types may be used in combination.
- diamine components generally used in polyimide are contained in a small amount (preferably 30 mol% or less, more preferably 10 mol% or less, more preferably 10 mol) within the range in which the characteristics of the polyimide of the present invention can be expressed. %)) Can also be used together.
- the diamine component used in the present invention is not particularly limited, but the purity (in the case of using a plurality of types of diamine components, the value of the highest purity diamine component or the purity of all the diamine components used is individually determined and used.
- the average value of the purity weighted by the ratio for example, when 70 parts by mass of a diamine component having a purity of 100% and 30 parts by mass of a diamine component having a purity of 90% are used, the purity of the diamine component used is 97% Calculated) is 99% or more, more preferably 99.5% or more.
- the purity is less than 98%, the molecular weight of the polyimide precursor is not sufficient, and the heat resistance of the resulting polyimide may be inferior.
- Purity is a value determined from gas chromatography analysis.
- the diamine component used in the present invention is not particularly limited, but the light transmittance (in the case of using plural kinds of diamine components, the value of the diamine component having the best light transmittance, or the purity of all the diamine components used). Obtained individually, and the average value of the light transmittance weighted by the mass ratio to be used, for example, 70 parts by weight of a diamine component having a light transmittance of 100%, and 30 parts by weight of a diamine component having a light transmittance of 90%, The light transmittance of the diamine component used is calculated to be 97%.) Is preferably 30% or more.
- the light transmittance here is a transmission having a wavelength of 400 nm and an optical path length of 1 cm with respect to a solution obtained by dissolving 8% by mass in methanol, water, N, N-dimethylacetamide, acetic acid or a hydrochloric acid solution thereof. Rate.
- the light transmittance of the diamine component is 30% or more, coloring of the resulting polyimide is reduced, which is favorable.
- X 1 and X 2 in the chemical formula (1) are each independently hydrogen, an alkyl group having 1 to 6 carbon atoms, preferably 1 to 3 carbon atoms, or 3 to 9 carbon atoms. Or an alkylsilyl group. X 1 and X 2 can change the type of functional group and the introduction rate of the functional group by the production method described later.
- X 1 and X 2 are alkyl groups having 1 to 6 carbon atoms, preferably 1 to 3 carbon atoms, the polyimide precursor tends to be excellent in storage stability.
- X 1 and X 2 are more preferably a methyl group or an ethyl group.
- X 1 and X 2 are alkylsilyl groups having 3 to 9 carbon atoms
- the solubility of the polyimide precursor tends to be excellent.
- X 1 and X 2 are alkylsilyl groups having 3 to 9 carbon atoms (that is, when a silylating agent is used), a tetracarboxylic acid component and a diamine component (that is, A and B in the chemical formula (1)) ).
- the linear expansion coefficient usually tends to be further reduced.
- X 1 and X 2 are more preferably a trimethylsilyl group or a t-butyldimethylsilyl group.
- each of X 1 and X 2 is 25% or more, preferably 50% or more, more preferably 75% or more.
- it can be an alkylsilyl group.
- the polyimide precursor of the present invention has a chemical structure taken by X 1 and X 2.
- the polyimide precursor of this invention can be easily manufactured with the following manufacturing methods for every classification.
- the manufacturing method of the polyimide precursor of this invention is not limited to the following manufacturing methods.
- a plurality of structures of the above classification can be introduced into the same molecular chain of a polyimide precursor, or a plurality of types of polyimide precursors of the above classification can be mixed and used.
- the polyimide precursor of the present invention comprises a tetracarboxylic acid component (preferably tetracarboxylic dianhydride) and a diamine component in a solvent in an approximately equimolar amount, preferably a molar ratio of the diamine component to the tetracarboxylic acid component.
- a tetracarboxylic acid component preferably tetracarboxylic dianhydride
- a diamine component in a solvent in an approximately equimolar amount, preferably a molar ratio of the diamine component to the tetracarboxylic acid component.
- Numberer of moles of diamine component / number of moles of tetracarboxylic acid component is preferably 0.90 to 1.10, more preferably 0.95 to 1.05, for example, at a relatively low temperature of 120 ° C. or less.
- diamine is dissolved in a solvent, and tetracarboxylic dianhydride is gradually added to this solution while stirring, and 0 to 120 ° C., preferably 5 to 80 ° C.
- the polyimide precursor solution composition is obtained by stirring for 1 to 72 hours in the above temperature range.
- the order of addition of diamine and tetracarboxylic dianhydride in the above production method is preferable because the molecular weight of the polyimide precursor is likely to increase.
- the molar ratio of the tetracarboxylic acid component and the diamine component is an excess of the diamine component, if necessary, an amount of a carboxylic acid derivative substantially corresponding to the excess mole number of the diamine component is added, and the tetracarboxylic acid component and the diamine are added.
- the molar ratio of the components can be approximated to the equivalent.
- the carboxylic acid derivative herein, a tetracarboxylic acid that does not substantially increase the viscosity of the polyimide precursor solution, that is, substantially does not participate in molecular chain extension, or a tricarboxylic acid that functions as a terminal terminator and its anhydride, Dicarboxylic acid and its anhydride are preferred.
- a polyimide precursor can be easily obtained by dehydrating and condensing diester dicarboxylic acid and diamine using a phosphorus condensing agent or a carbodiimide condensing agent.
- the polyimide precursor obtained by this method is stable, it can be purified by reprecipitation by adding a solvent such as water or alcohol.
- a polyimide precursor is obtained by adding a silylating agent to the polyamic acid obtained by the above-mentioned 1) polyamic acid production method and stirring at 0 to 180 ° C., preferably 5 to 150 ° C. for 1 to 72 hours.
- the body is obtained.
- the reaction is performed at 150 ° C. or lower, the imidization reaction can be suppressed, and the polyimide precursor can be stably produced, which is preferable.
- the silylating agent used here is not particularly limited as long as it is an alkylsilyl compound having 3 to 9 carbon atoms.
- a trialkylsilyl halide or a silylating agent containing no halogen can be used.
- the trialkylsilyl halide trimethylsilyl chloride, triethylsilyl chloride, isopropyldimethylsilyl chloride, t-butyldimethylsilyl chloride, triisopropylsilyl chloride and the like are preferable, and trimethylsilyl chloride and t-butyldimethylsilyl chloride are particularly preferable. It is preferable because of its high reactivity and low cost.
- silylating agent not containing halogen such as chlorine atom examples include N, O-bis (trimethylsilyl) trifluoroacetamide, N, O-bis (trimethylsilyl) acetamide, and hexamethyldisilazane.
- the use of a silylating agent containing no halogen such as chlorine is preferable because it is not necessary to purify the silylated diamine.
- N, O-bis (trimethylsilyl) acetamide and hexamethyldisilazane are particularly preferred because they do not contain fluorine atoms and are low in cost.
- an amine catalyst such as pyridine, piperidine or triethylamine can be used to accelerate the reaction.
- This catalyst can be used as it is as a polymerization catalyst for the polyimide precursor.
- any of the above production methods can be suitably performed in a solvent, and as a result, the polyimide precursor solution composition of the present invention can be easily obtained.
- Solvents used in preparing the polyimide precursor are, for example, N, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, 1,3-dimethyl- Aprotic solvents such as 2-imidazolidinone and dimethyl sulfoxide and water are preferable, and N, N-dimethylacetamide is particularly preferable.
- any type of solvent can be used as long as the raw material monomer component and the polyimide precursor to be formed are dissolved.
- the structure is not particularly limited.
- amide solvents such as N, N-dimethylformamide, N, N-dimethylacetamide, N-methylpyrrolidone, ⁇ -butyrolactone, ⁇ -valerolactone, ⁇ -valerolactone, ⁇ -caprolactone, ⁇ -caprolactone, ⁇ - Cyclic ester solvents such as methyl- ⁇ -butyrolactone, carbonate solvents such as ethylene carbonate and propylene carbonate, glycol solvents such as triethylene glycol, phenols such as m-cresol, p-cresol, 3-chlorophenol and 4-chlorophenol A system solvent, acetophenone, 1,3-dimethyl-2-imidazolidinone, sulfolane, dimethyl sulfoxide, water and the like are preferably employed.
- solvent used have the following purity.
- A As a solvent to be used, a solvent having an optical path length of 1 cm and a light transmittance at a wavelength of 400 nm of 89% or more, more preferably 90% or more, particularly preferably 91% or more.
- B Nitrogen as a solvent to be used. A solvent having an optical path length of 1 cm and a light transmittance at a wavelength of 400 nm of not less than 20%, more preferably not less than 40%, particularly preferably not less than 80% after being heated and refluxed for 3 hours in the above
- D The solvent used is determined by gas chromatography analysis.
- the total amount of impurity peaks appearing on the long time side with respect to the retention time of the main component peak is less than 0.2%, more preferably 0.1% or less, particularly Preferably the solvent is 0.05% or less
- the amount of the non-volatile component at 250 ° C. of the solvent used is 0.1% or less, more preferably 0.05% or less, particularly preferably 0.01%.
- Metal components of the solvent used for example, Li, Na, Mg, Ca, Al, K, Ca, Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn, Mo, Cd ) Content of 10 ppm or less, more preferably 1 ppm or less, particularly preferably 500 ppb or less, more particularly preferably 300 ppb or less.
- the conditions in these properties are based on the sum of the solvents used. That is, the solvent used is not limited to one type, and may be two or more types. Two or more types of solvents are used both when a mixed solvent is used in a specific process and when a different solvent is used depending on the process, for example, when the polymerization solvent and the diluent solvent for the additive are different. means.
- mixed solvents two or more types of solvents are used (hereinafter referred to as mixed solvents)
- the conditions of each characteristic relating to purity are applied to the entire mixed solvent, and when the solvent is used in multiple steps, the final In particular, the condition of each characteristic relating to purity is applied to a mixed solvent obtained by mixing all the solvents to be contained in the varnish.
- Each property may be measured by actually mixing the solvent, or the properties of the individual solvents may be obtained and the properties of the entire mixture may be obtained by calculation. For example, when 70 parts of 100% pure solvent A and 30 parts 90% pure solvent B are used, the purity of the solvent used is calculated as 97%.
- the logarithmic viscosity of the polyimide precursor is not particularly limited, but the logarithmic viscosity in an N, N-dimethylacetamide solution at a concentration of 0.5 g / dL at 30 ° C. is 0.2 dL / g or more, preferably 0.8. It is preferably 5 dL / g or more.
- the logarithmic viscosity is 0.2 dL / g or more, the molecular weight of the polyimide precursor is high, and the mechanical strength and heat resistance of the resulting polyimide are excellent.
- the polyimide precursor of the present invention is not particularly limited, but N, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, 1,3-dimethyl-2
- a solvent selected from imidazolidinone, dimethyl sulfoxide and water at a concentration of 10% by mass, preferably 30% or more, more preferably 40% or more.
- the resulting polyimide has excellent light transmittance.
- the polyimide precursor solution composition includes at least the polyimide precursor of the present invention and a solvent, and the tetracarboxylic acid component and the diamine component with respect to the total amount of the solvent, the tetracarboxylic acid component and the diamine component.
- the total amount of is preferably 5% by mass or more, preferably 10% by mass or more, more preferably 15% by mass or more.
- the content is preferably 60% by mass or less, and preferably 50% by mass or less. This concentration is a concentration approximately approximate to the solid content concentration resulting from the polyimide precursor, but if this concentration is too low, it becomes difficult to control the film thickness of the polyimide film obtained, for example, when producing a polyimide film. Sometimes.
- the solvent used in the polyimide precursor solution composition of the present invention is not a problem as long as the polyimide precursor is dissolved, and is not particularly limited to its structure.
- solvents amide solvents such as N, N-dimethylformamide, N, N-dimethylacetamide, N-methylpyrrolidone, ⁇ -butyrolactone, ⁇ -valerolactone, ⁇ -valerolactone, ⁇ -caprolactone, ⁇ -caprolactone, ⁇ - Cyclic ester solvents such as methyl- ⁇ -butyrolactone, carbonate solvents such as ethylene carbonate and propylene carbonate, glycol solvents such as triethylene glycol, phenols such as m-cresol, p-cresol, 3-chlorophenol and 4-chlorophenol A system solvent, acetophenone, 1,3-dimethyl-2-imidazolidinone, sulfolane, dimethyl sulfoxide, water and the like are preferably employed.
- the viscosity (rotational viscosity) of the polyimide precursor solution composition is not particularly limited, but the rotational viscosity measured using an E-type rotational viscometer at a temperature of 25 ° C. and a shear rate of 20 sec ⁇ 1 is 0.01. To 1000 Pa ⁇ sec is preferable, and 0.1 to 100 Pa ⁇ sec is more preferable. Moreover, thixotropy can also be provided as needed. When the viscosity is in the above range, it is easy to handle when coating or forming a film, and the repelling is suppressed and the leveling property is excellent, so that a good film can be obtained.
- the polyimide precursor solution composition of the present invention may contain chemical imidizing agents (acid anhydrides such as acetic anhydride, amine compounds such as pyridine and isoquinoline), antioxidants, fillers, dyes, pigments, silanes as necessary.
- chemical imidizing agents such as acetic anhydride, amine compounds such as pyridine and isoquinoline
- antioxidants such as pyridine and isoquinoline
- fillers such as coupling agents, primers, flame retardants, antifoaming agents, leveling agents, rheology control agents (flow aids), release agents and the like can be added.
- the polyimide of the present invention is characterized by comprising a repeating unit represented by the chemical formula (5).
- This polyimide of the present invention can be suitably produced by subjecting the polyimide precursor of the present invention as described above to a ring-closing reaction (imidation reaction).
- the imidization method is not particularly limited, and a known thermal imidation or chemical imidization method can be suitably applied.
- a film, a laminate of the polyimide film and another substrate, a coating film, powder, beads, a molded body, a foam, a varnish, and the like can be preferably exemplified.
- the polyimide of the present invention is not particularly limited, but the total light transmittance (average light transmittance at a wavelength of 380 nm to 780 nm) in a film having a thickness of 10 ⁇ m is preferably 70% or more, more preferably 80% or more, and particularly preferably Is 85% or more and has excellent light transmittance.
- the polyimide of the present invention is not particularly limited, but when a film having a thickness of 10 ⁇ m is used, the light transmittance at a wavelength of 400 nm is preferably 50% or more, more preferably 60% or more, more preferably 70% or more, particularly preferably. Is 75% or more and has excellent transparency.
- the polyimide of the present invention is not particularly limited, but the average linear expansion coefficient at 50 ° C. to 200 ° C. when formed into a film is preferably 50 ppm / K or less, more preferably 40 ppm / K or less, particularly preferably 20 ppm / K or less and has a very low linear expansion coefficient.
- the polyimide of the present invention usually has an oxygen index of 22% (volume fraction) or more, more preferably 24% (volume fraction) or more when used as a film obtained in accordance with JIS K7201, and as a result, excellent. Has flame retardancy.
- the polyimide of the present invention having high flame retardancy is obtained from the polyimide precursor (B), A in the chemical formula (5) is an aliphatic tetravalent group, and B is It is preferably a divalent group having at least one chemical structure of the chemical formula (2) in the chemical structure.
- the film made of the polyimide of the present invention is preferably about 1 ⁇ m to 250 ⁇ m, more preferably about 1 ⁇ m to 150 ⁇ m, although it depends on the application.
- the polyimide of the present invention has excellent properties such as transparency, bending resistance, and high heat resistance, and also has an extremely low linear expansion coefficient and excellent solvent resistance, or excellent solvent resistance and flame resistance. Since it has, it can use suitably in the use of the transparent substrate for a display, the transparent substrate for touch panels, or the board
- the polyimide precursor solution composition of the present invention is cast on a base material such as ceramic (glass, silicon, alumina), metal (copper, aluminum, stainless steel), heat-resistant plastic film (polyimide), nitrogen, etc.
- a base material such as ceramic (glass, silicon, alumina), metal (copper, aluminum, stainless steel), heat-resistant plastic film (polyimide), nitrogen, etc.
- a base material such as ceramic (glass, silicon, alumina), metal (copper, aluminum, stainless steel), heat-resistant plastic film (polyimide), nitrogen, etc.
- a base material such as ceramic (glass, silicon, alumina), metal (copper, aluminum, stainless steel), heat-resistant plastic film (polyimide), nitrogen, etc.
- inert gas or in the air using hot air or infrared rays at a temperature of 20 to 180 ° C., preferably 20 to 150 ° C.
- a polyimide film / substrate laminate or a polyimide film can be produced by heating imidization in air at a temperature of about 200 to 500 ° C., more preferably about 250 to 450 ° C. using hot air or infrared rays. .
- the thickness of the polyimide film here is preferably 1 to 250 ⁇ m, more preferably 1 to 150 ⁇ m, because of the transportability in the subsequent steps.
- the imidization reaction of the polyimide precursor instead of the heat imidation by the heat treatment as described above, contains a dehydration cyclization reagent such as acetic anhydride in the presence of a tertiary amine such as pyridine or triethylamine. It is also possible to carry out by chemical treatment such as immersion in a solution. Also, a partially imidized polyimide precursor is prepared by previously charging and stirring these dehydrating cyclization reagents in a polyimide precursor solution composition, and casting and drying them on a substrate. In addition, a polyimide film / substrate laminate or a polyimide film can be obtained by further heat-treating this as described above.
- a dehydration cyclization reagent such as acetic anhydride in the presence of a tertiary amine such as pyridine or triethylamine. It is also possible to carry out by chemical treatment such as immersion in a solution.
- a partially imidized polyimide precursor is prepared by
- a flexible conductive substrate can be obtained by forming a conductive layer on one side or both sides of the polyimide film / base laminate or the polyimide film obtained in this way.
- a flexible conductive substrate can be obtained, for example, by the following method. That is, as a first method, a conductive material (metal or metal oxide) is formed on the polyimide film surface by sputtering deposition, printing or the like without peeling the polyimide film / substrate laminate from the substrate. , Conductive organic material, conductive carbon, etc.) are formed to produce a conductive layer / polyimide film / substrate laminate. Thereafter, if necessary, a transparent and flexible conductive substrate composed of the conductive layer / polyimide film laminate can be obtained by peeling the electric conductive layer / polyimide film laminate from the base material.
- a conductive material metal or metal oxide
- the polyimide film is peeled off from the substrate of the polyimide film / substrate laminate to obtain a polyimide film, and a conductive substance (metal or metal oxide, conductive organic substance, A conductive layer of conductive carbon or the like can be formed in the same manner as in the first method, and a transparent and flexible conductive substrate composed of a conductive layer / polyimide film laminate can be obtained.
- a conductive substance metal or metal oxide, conductive organic substance, A conductive layer of conductive carbon or the like can be formed in the same manner as in the first method, and a transparent and flexible conductive substrate composed of a conductive layer / polyimide film laminate can be obtained.
- a gas barrier layer such as water vapor or oxygen, a light adjusting layer, or the like by sputtering vapor deposition or gel-sol method.
- An inorganic layer such as may be formed.
- the conductive layer is preferably formed with a circuit by a method such as a photolithography method, various printing methods, or an ink jet method.
- the substrate of the present invention has a conductive layer circuit on the surface of a polyimide film composed of the polyimide of the present invention with a gas barrier layer or an inorganic layer as required.
- This substrate is flexible, excellent in transparency, bendability, and heat resistance, and has an extremely low linear expansion coefficient and excellent solvent resistance, so that a fine circuit can be easily formed. Therefore, this board
- a transistor inorganic transistor, organic transistor
- a transistor is further formed on this substrate by vapor deposition, various printing methods, an ink jet method, etc., and a flexible thin film transistor is manufactured. It is suitably used as an element.
- ⁇ Evaluation of tetracarboxylic acid component and diamine component> [Light transmittance]
- a predetermined amount of the tetracarboxylic acid component was dissolved in a solvent (2N aqueous sodium hydroxide solution) to obtain a 10% by mass solution.
- a predetermined amount of the diamine component was dissolved in a solvent (methanol) to obtain an 8% by mass solution.
- the light transmittance at a wavelength of 400 nm of the tetracarboxylic acid component and the diamine component was measured using MCPD-300 manufactured by Otsuka Electronics Co., Ltd. and a standard cell with an optical path length of 1 cm, using the solvent as a blank.
- Non-volatile content A glass container was weighed with 5 g of solvent and heated in a hot air circulating oven at 250 ° C. for 30 minutes. It was cooled to room temperature and the residue was weighed. From the mass, the non-volatile content (% by mass) of the solvent was determined.
- the light transmittance after reflux the light transmittance at a wavelength of 400 nm of a solvent heated under reflux for 3 hours in a nitrogen atmosphere having an oxygen concentration of 200 ppm or less was measured.
- the metal component contained in the solvent was quantified using ElanDRC II inductively coupled plasma mass spectrometry (ICP-MS) manufactured by Perkin Elmer.
- ICP-MS inductively coupled plasma mass spectrometry
- the polyimide precursor was diluted with N, N-dimethylacetamide so that a 10% by mass polyimide precursor solution was obtained.
- N, N-dimethylacetamide was used as a blank, and the light transmittance at a wavelength of 400 nm of a 10% by weight polyimide precursor solution was measured. did.
- Linear expansion coefficient (CTE) A polyimide film having a thickness of about 10 ⁇ m is cut into a strip with a width of 4 mm to form a test piece. The temperature is increased to 300 ° C. using a TMA-50 manufactured by Shimadzu Corporation with a length between chucks of 15 mm, a load of 2 g, and a heating rate of 20 ° C./min. did. The average linear expansion coefficient from 50 ° C. to 200 ° C. was determined from the obtained TMA curve.
- a polyimide film having a thickness of about 10 ⁇ m was cut into a strip having a width of 4 mm to form a test piece, which was bent at a radius of curvature of 1 mm under conditions of a temperature of 25 ° C. and a humidity of 50% RH. Subsequent test pieces were visually confirmed, and those having no abnormality were indicated by ⁇ , and those having cracks were indicated by ⁇ .
- Table 3 shows the structural formulas of the tetracarboxylic acid component and the diamine component used in Examples and Comparative Examples.
- Example 1 In a reaction vessel substituted with nitrogen gas, 2.27 g (10 mmol) of DABAN was charged, and N, N-dimethylacetamide was charged in such an amount that the total monomer weight (total of diamine component and carboxylic acid component) was 15% by mass. 25.55g was added and it stirred at 50 degreeC for 2 hours. To this solution, PMDA-HS (2.33 g, 10 mmol) was gradually added. The mixture was stirred at 50 ° C. for 6 hours to obtain a uniform and viscous polyimide precursor solution.
- a polyimide precursor solution filtered through a PTFE membrane filter is applied to a glass substrate, and then directly on the glass substrate at 120 ° C. for 1 hour, 150 ° C. for 30 minutes, and 200 ° C. for 30 minutes in a nitrogen atmosphere (oxygen concentration of 200 ppm or less).
- the mixture was heated to 350 ° C. and heated for 5 minutes to thermally imidize to obtain a colorless and transparent polyimide film / glass laminate.
- the obtained polyimide film / glass laminate was immersed in water and then peeled to obtain a polyimide film having a film thickness of about 10 ⁇ m.
- Examples 2 to 5 The diamine component and the carboxylic acid component have the chemical compositions shown in Table 4-1, and the solvent N, N-dimethylacetamide has a total monomer weight (total of diamine component and carboxylic acid component) of 15% by mass. Except having used the quantity, it carried out similarly to Example 1, and obtained the polyimide precursor solution and the polyimide film.
- Example 6 In a reaction vessel substituted with nitrogen gas, 2.27 g (10 mmol) of DABAN was added, and N, N-dimethylacetamide was charged in such an amount that the total monomer mass (total of diamine component and carboxylic acid component) was 20% by mass. 21.16g was added and it stirred at 50 degreeC for 2 hours. To this solution, 2.11 g (7 mmol) of DNDAxx and 0.91 g (3 mmol) of DNDAdx were gradually added. The mixture was stirred at 50 ° C. for 6 hours to obtain a uniform and viscous polyimide precursor solution. And it carried out similarly to Example 1 and formed into a film, and obtained the polyimide film.
- Example 7 In a reaction vessel substituted with nitrogen gas, 2.27 g (10 mmol) of DABAN was added, and N, N-dimethylacetamide was charged in such an amount that the total monomer mass (total of diamine component and carboxylic acid component) was 20% by mass. 21.16g was added and it stirred at 50 degreeC for 2 hours. To this solution, 3.02 g (10 mmol) of DNDAxx was gradually added. The mixture was stirred at 50 ° C. for 6 hours to obtain a uniform and viscous polyimide precursor solution. And it carried out similarly to Example 1 and formed into a film, and obtained the polyimide film.
- Example 8 In a reaction vessel substituted with nitrogen gas, 2.27 g (10 mmol) of DABAN was added, and N, N-dimethylacetamide was charged in such an amount that the total monomer mass (total of diamine component and carboxylic acid component) was 20% by mass. 18.06 g was added and stirred at room temperature for 1 hour. To this solution, 4.07 g (20 mmol) of BSA was added and stirred at room temperature for 3 hours. Next, 2.24 g (10 mmol) of PMDA-HS was gradually added to this solution. The mixture was stirred at room temperature for 6 hours to obtain a uniform and viscous polyimide precursor solution. And it carried out similarly to Example 1 and formed into a film, and obtained the polyimide film.
- Example 9 In a reaction vessel substituted with nitrogen gas, 2.05 g (9 mmol) of DABAN and 0.11 g (1 mmol) of PPD were added, and N, N-dimethylacetamide was charged, and the total mass of monomers (total of diamine component and carboxylic acid component). ) was added in an amount of 20% by mass, and stirred at room temperature for 1 hour. To this solution, 2.24 g (10 mmol) of PMDA-HS was gradually added. The mixture was stirred at room temperature for 6 hours to obtain a uniform and viscous polyimide precursor solution. And it carried out similarly to Example 1 and formed into a film, and obtained the polyimide film.
- Example 10 In a reaction vessel substituted with nitrogen gas, 2.05 g (9 mmol) of DABAN and 0.32 g (1 mmol) of TFMB were charged, N, N-dimethylacetamide was charged, and the total mass of monomers (total of diamine component and carboxylic acid component) ) was added in an amount of 20% by mass, and the mixture was stirred at room temperature for 1 hour. To this solution, 2.24 g (10 mmol) of PMDA-HS was gradually added. The mixture was stirred at room temperature for 6 hours to obtain a uniform and viscous polyimide precursor solution. And it carried out similarly to Example 1 and formed into a film, and obtained the polyimide film.
- Example 11 In a reaction vessel substituted with nitrogen gas, 3.46 g (10 mmol) of 4-APTP is placed, N, N-dimethylacetamide is charged, and the total mass of monomers (total of diamine component and carboxylic acid component) is 20 mass%. An amount of 25.29 g was added and stirred at 50 ° C. for 2 hours. To this solution, 3.02 g (10 mmol) of DNDAxx was gradually added. The mixture was stirred at 50 ° C. for 6 hours to obtain a uniform and viscous polyimide precursor solution. And it carried out similarly to Example 1 and formed into a film, and obtained the polyimide film.
- Example 12 In a reaction vessel substituted with nitrogen gas, 2.27 g (10 mmol) of DABAN was added, and N, N-dimethylacetamide was charged in such an amount that the total monomer mass (total of diamine component and carboxylic acid component) was 20% by mass. 21.16g was added and it stirred at 50 degreeC for 2 hours. To this solution, 3.02 g (10 mmol) of DNDAxx was gradually added. The mixture was stirred at 50 ° C. for 6 hours to obtain a uniform and viscous polyimide precursor solution. To the solution, 4.07 g (20 mmol) of BSA was added and stirred for 12 hours. And it carried out similarly to Example 1 and formed into a film, and obtained the polyimide film.
- Example 13 In a reaction vessel substituted with nitrogen gas, 3.46 g (10 mmol) of 4-APTP is charged, N, N-dimethylacetamide is charged, and the total mass of monomers (total of diamine component and carboxylic acid component) is 15% by mass. An amount of 36.72 g was added and stirred at 50 ° C. for 2 hours. To this solution, 3.02 g (10 mmol) of DNDAxx was gradually added. The mixture was stirred at 50 ° C. for 6 hours to obtain a uniform and viscous polyimide precursor solution. To the solution, 2.03 g (10 mmol) of BSA was added and stirred for 12 hours. And it carried out similarly to Example 1 and formed into a film, and obtained the polyimide film.
- Example 14 In a reaction vessel substituted with nitrogen gas, DABAN (1.59 g, 7 mmol) and PPD (0.32 g, 3 mmol) were placed, N, N-dimethylacetamide was charged, and the total mass of monomers (total of diamine component and carboxylic acid component). ) was added in an amount of 20% by mass, and the mixture was stirred at room temperature for 1 hour. To this solution, 3.02 g (10 mmol) of DNDAxx was gradually added. The mixture was stirred at room temperature for 6 hours to obtain a uniform and viscous polyimide precursor solution. And it carried out similarly to Example 1 and formed into a film, and obtained the polyimide film.
- Example 15 In a reaction vessel purged with nitrogen gas, 1.59 g (7 mmol) of DABAN and 0.96 g (3 mmol) of TFMB were charged, N, N-dimethylacetamide was charged, and the total mass of monomers (total of diamine component and carboxylic acid component) ) was added in an amount of 20% by mass, and the mixture was stirred at room temperature for 1 hour. To this solution, 3.02 g (10 mmol) of DNDAxx was gradually added. The mixture was stirred at room temperature for 6 hours to obtain a uniform and viscous polyimide precursor solution. And it carried out similarly to Example 1 and formed into a film, and obtained the polyimide film.
- Example 16 In a reaction vessel substituted with nitrogen gas, 2.42 g (7 mmol) of 4-APTP and 0.32 g (3 mmol) of PPD were added, and N, N-dimethylacetamide was charged, and the total mass of monomers (diamine component and carboxylic acid component) was added. 21.79 g in such an amount that 20% by mass was obtained, and the mixture was stirred at room temperature for 1 hour. To this solution, 3.02 g (10 mmol) of DNDAxx was gradually added. The mixture was stirred at room temperature for 6 hours to obtain a uniform and viscous polyimide precursor solution. And it carried out similarly to Example 1 and formed into a film, and obtained the polyimide film.
- Example 17 In a reaction vessel substituted with nitrogen gas, DABAN (1.59 g, 7 mmol) and PPD (0.32 g, 3 mmol) were placed, N, N-dimethylacetamide was charged, and the total mass of monomers (total of diamine component and carboxylic acid component). ) was added in an amount of 20% by mass, and the mixture was stirred at room temperature for 1 hour. To this solution, 3.02 g (10 mmol) of DNDAxx was gradually added. The mixture was stirred at room temperature for 6 hours to obtain a uniform and viscous polyimide precursor solution. To the solution, 4.07 g (20 mmol) of BSA was added and stirred for 12 hours. And it carried out similarly to Example 1 and formed into a film, and obtained the polyimide film.
- Example 18 In a reaction vessel substituted with nitrogen gas, 3.46 g (10 mmol) of BABA was placed, and N, N-dimethylacetamide was charged in such an amount that the total monomer weight (total of diamine component and carboxylic acid component) was 20% by mass. 25.94g was added and it stirred at room temperature for 1 hour. To this solution, 3.02 g (10 mmol) of DNDAxx was gradually added. The mixture was stirred at room temperature for 6 hours to obtain a uniform and viscous polyimide precursor solution. And it carried out similarly to Example 1 and formed into a film, and obtained the polyimide film.
- the diamine component and the carboxylic acid component have the chemical compositions shown in Table 4-2, and the solvent N, N-dimethylacetamide has a total monomer weight (total of diamine component and carboxylic acid component) of each of Comparative Examples 1 and 2 Then, in the same manner as in Example 1 except that an amount of 15% by mass and an amount of 20% by mass in Comparative Examples 3 and 4 were used, a polyimide precursor solution and a polyimide film were obtained.
- the polyimide obtained from the polyimide precursor of the present invention has excellent light transmittance and bending resistance, and has a low linear expansion coefficient and solvent resistance. It can be suitably used as a transparent substrate capable of forming a colorless and transparent and fine circuit for display applications and the like.
- Example 19 In a reaction vessel substituted with nitrogen gas, 3.84 g (10 mmol) of AZDA was charged, N, N-dimethylacetamide was charged, and 34.49 g of monomer (total of diamine component and carboxylic acid component) was 15% by mass. And stirred at 50 ° C. for 2 hours.
- a polyimide precursor solution filtered through a PTFE membrane filter was applied to a glass substrate, and the nitrogen atmosphere (oxygen concentration of 200 ppm or less) was maintained as it was on a glass substrate at 120 ° C. for 1 hour, 150 ° C. for 30 minutes, 200 ° C. for 30 minutes, The temperature was raised to 350 ° C. and heated for 5 minutes to thermally imidize to obtain a colorless and transparent polyimide film / glass laminate. Next, the obtained polyimide film / glass laminate was immersed in water and then peeled to obtain a polyimide film having a film thickness of about 10 ⁇ m.
- Example 20 In a reaction vessel substituted with nitrogen gas, 3.84 g (10 mmol) of AZDA was charged, N, N-dimethylacetamide was charged, and 27.44 g of monomer (total of diamine component and carboxylic acid component) was 20% by mass. And stirred at 50 ° C. for 2 hours.
- Example 21 In a reaction vessel substituted with nitrogen gas, 3.84 g (10 mmol) of AZDA was charged, N, N-dimethylacetamide was charged, and 27.44 g of monomer (total of diamine component and carboxylic acid component) was 20% by mass. And stirred at 50 ° C. for 2 hours.
- the polyimide obtained from the polyimide precursor of the present invention has excellent light transmittance and bending resistance, and has a low linear expansion coefficient, solvent resistance, and flame resistance, and is colorless for display applications and the like. It can be suitably used as a transparent substrate capable of forming a transparent and fine circuit.
- a polyimide having excellent characteristics such as transparency, bending resistance, and high heat resistance, and also having a very low linear expansion coefficient and excellent solvent resistance, and a precursor thereof Further, according to the present invention, a polyimide having excellent characteristics such as transparency, bending resistance, and high heat resistance, and also having an extremely low linear expansion coefficient, excellent solvent resistance, and flame retardancy, and a precursor thereof are also provided. Can be provided.
- the polyimide obtained from this polyimide precursor, and the polyimide are highly transparent, have a low linear expansion coefficient, can easily form a fine circuit, and have a solvent resistance. It can be suitably used to form.
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Abstract
Description
1. 下記化学式(1)で表される繰り返し単位を含むことを特徴とするポリイミド前駆体。
5. ジアミン成分が、化学式(1)で表される繰り返し単位を与えるジアミン成分に加えて、p-フェニレンジアミン、ベンジジン、2,2’-ビス(トリフルオロメチル)ベンジジン、3,3’-ジメチルベンジジン、2,2’-ジメチルベンジジンまたはトランス-シクロヘキサンジアミンのいずれか1種以上を30モル%以下で含むことを特徴とする前記項4に記載のポリイミド前駆体。
6. ポリイミド前駆体の対数粘度(温度:30℃、濃度:0.5g/dL、溶媒:N,N-ジメチルアセトアミド)が0.2dL/g以上であることを特徴とする前記項1~5のいずれかに記載のポリイミド前駆体。
7. 純度(複数の立体異性体を含む場合は、それらを区別せず同一成分と見なした場合の純度)が99%以上のテトラカルボン酸成分と、純度が99%以上のジアミン成分とから得られることを特徴とする前記項1~6のいずれかに記載のポリイミド前駆体。
8. 光透過率が70%以上のテトラカルボン酸成分(但し、テトラカルボン酸成分の光透過率は、2規定水酸化ナトリウム溶液に10質量%の濃度に溶解して得られた溶液に対する波長400nm、光路長1cmの透過率を表す。)と、光透過率が30%以上のジアミン成分(但し、ジアミン成分の光透過率は、メタノール、水、N,N-ジメチルアセトアミド、酢酸もしくはこれらの塩酸溶液に、8質量%の濃度に溶解して得られた溶液に対する波長400nm、光路長1cmの透過率を表す。)とから得られることを特徴とする前記項1~7のいずれかに記載のポリイミド前駆体。
9. N,N-ジメチルホルムアミド、N,N-ジメチルアセトアミド、N-メチル-2-ピロリドン、N-エチル-2-ピロリドン、1,3-ジメチル-2-イミダゾリジノン、ジメチルスルホオキシド、水より選ばれる溶媒に10質量%の濃度に溶解して得られた溶液に対する波長400nm、光路長1cmの光透過率が40%以上であることを特徴とする前記項1~8のいずれかに記載のポリイミド前駆体。
前記溶媒の波長400nm、光路長1cmの光透過率が89%以上であることを特徴とするポリイミド前駆体溶液組成物。
12. 厚さ10μmのフィルムでの全光透過率(波長380nm~780nmの平均光透過率)が70%以上、好ましくは80%以上、より好ましくは85%以上であることを特徴とする前記項11に記載のポリイミド。
13. 厚さ10μmのフィルムでの波長400nmの光透過率が50%以上、好ましくは60%以上、より好ましくは70%以上、特に好ましくは75%以上であることを特徴とする前記項11または12に記載のポリイミド。
14. 厚さ10μmのフィルムでの50~200℃における平均線膨張係数が50ppm/K以下、好ましくは45ppm/K以下、より好ましくは40ppm/K以下、特に好ましくは20ppm/K以下であることを特徴とする前記項11~13のいずれかに記載のポリイミド。
1R,2S,4S,5R-シクロヘキサンテトラカルボン酸(以下PMTA-HSと略すことがあり、更にその酸二無水物をPMDA-HSと略すことがある。)、
1S,2S,4R,5R-シクロヘキサンテトラカルボン酸(以下PMTA-HHと略すことがあり、更にその酸二無水物をPMDA-HHと略すことがある。)、
(1R,1’S,3R,3’S,4R,4’S)ジシクロヘキシル-3,3’,4,4’-テトラカルボン酸(以下trans-DCTAと略すことがあり、更にその酸二無水物をtrans-DCDAと略すことがある。)、
(1R,1’S,3R,3’S,4S,4’R)ジシクロヘキシル-3,3’,4,4’-テトラカルボン酸(以下cis-DCTAと略すことがあり、更にその酸二無水物をcis-DCDAと略すことがある。)
が好ましく、PMTA-HS、trans-DCTA、cis-DCTAは、酸二無水物とした場合の反応性に優れるため、より好ましい。
1rC7-ビシクロ[2.2.2]オクタン-2t,3t,5c,6c-テトラカルボン酸(以下cis/trans-BTTA-Hと略すことがあり、更にその無水物をcis/trans-BTA-Hと略すことがある。)
1rC7-ビシクロ[2.2.2]オクタン-2c,3c,5c,6c-テトラカルボン酸(以下cis/cis-BTTA-Hと略すことがあり、更にその酸二無水物をcis/cis-BTA-Hと略すことがある。)
(4arH,8acH)-デカヒドロ-1t,4t:5c,8c-ジメタノナフタレン-2t,3t,6c,7c-テトラカルボン酸(以下DNTAxxと略すことがあり、更にその酸二無水物をDNDAxxと略すことがある。)
(4arH,8acH)-デカヒドロ-1t,4t:5c,8c-ジメタノナフタレン-2c,3c,6c,7c-テトラカルボン酸(以下DNTAdxと略すことがあり、更にその酸二無水物をDNDAdxと略すことがある。)
が好ましい。
本発明のポリイミド前駆体は、溶媒中でテトラカルボン酸成分(好ましくはテトラカルボン酸二無水物)とジアミン成分とを略等モル、好ましくはテトラカルボン酸成分に対するジアミン成分のモル比[ジアミン成分のモル数/テトラカルボン酸成分のモル数]が好ましくは0.90~1.10、より好ましくは0.95~1.05の割合で、例えば120℃以下の比較的低温度でイミド化を抑制しながら反応することによって、ポリイミド前駆体溶液組成物として好適に得ることができる。
テトラカルボン酸二無水物を任意のアルコールと反応させ、ジエステルジカルボン酸を得た後、塩素化試薬(チオニルクロライド、オキサリルクロライドなど)と反応させ、ジエステルジカルボン酸クロライドを得る。このジエステルジカルボン酸クロライドとジアミンを-20~120℃、好ましくは-5~80℃の範囲で1~72時間攪拌することで、ポリイミド前駆体が得られる。80℃以上で反応させる場合、分子量が重合時の温度履歴に依存して変動し、また熱によりイミド化が進行することから、ポリイミド前駆体を安定して製造できなくなる可能性がある。また、ジエステルジカルボン酸とジアミンを、リン系縮合剤や、カルボジイミド縮合剤などを用いて脱水縮合することでも、簡便にポリイミド前駆体が得られる。
あらかじめ、ジアミンとシリル化剤を反応させ、シリル化されたジアミンを得る。必要に応じて、蒸留等により、シリル化されたジアミンの精製を行う。そして、脱水された溶媒中にシリル化されたジアミンを溶解させておき、攪拌しながら、テトラカルボン酸二無水物を徐々に添加し、0~120℃、好ましくは5~80℃の範囲で1~72時間攪拌することで、ポリイミド前駆体が得られる。80℃以上で反応させる場合、分子量が重合時の温度履歴に依存して変動し、また熱によりイミド化が進行することから、ポリイミド前駆体を安定して製造できなくなる可能性がある。
(b)使用される溶媒として、窒素中で3時間加熱還流した後の光路長1cm、波長400nmにおける光透過率が20%以上、より好ましくは40%以上、特に好ましくは80%以上である溶媒
(c)使用される溶媒として、ガスクロマトグラフィー分析より求められた純度が99.8%以上、より好ましくは99.9%以上、さらに好ましくは99.99%以上である溶媒
(d)使用される溶媒として、ガスクロマトグラフィー分析で求められる主成分ピークの保持時間に対し、長時間側に現れる不純物ピークの総量が、0.2%未満、より好ましくは0.1%以下、特に好ましくは0.05%以下である溶媒
(e)使用される溶媒の250℃での不揮発成分の量が0.1%以下、より好ましくは0.05%以下、特に好ましくは0.01%以下であること
(f)使用される溶媒の金属成分(例えば、Li,Na,Mg,Ca,Al,K,Ca,Ti,Cr,Mn,Fe,Co,Ni,Cu,Zn,Mo,Cd)の含有率が、10ppm以下、より好ましくは1ppm以下、特に好ましくは500ppb以下、より特に好ましくは300ppb以下であること
[光透過率]
テトラカルボン酸成分では、所定量のテトラカルボン酸成分を溶媒(2N水酸化ナトリウム水溶液)に溶解し、10質量%溶液を得た。ジアミン成分では、所定量のジアミン成分を溶媒(メタノール)に溶解し、8質量%溶液を得た。調製した溶液を用い、大塚電子製MCPD-300、光路長1cmの標準セルを用いて、溶媒をブランクとし、テトラカルボン酸成分、ジアミン成分の波長400nmにおける光透過率を測定した。
[GC分析:溶媒の純度]
島津製作所製GC-2010を用い、以下の条件で測定した。純度(GC)はピーク面積分率より求めた。
カラム: J&W社製DB-FFAP 0.53mmID×30m
カラム温度: 40℃(5分保持)+40℃~250℃(10℃/分)+250℃(9分保持)
注入口温度: 240℃
検出器温度: 260℃
キャリアガス: ヘリウム 10ml/分
注入量: 1μL
ガラス製容器に溶媒5gを秤量し、250℃の熱風循環オーブン中で30分加熱した。室温に冷却し、その残分を秤量した。その質量より、溶媒の不揮発分(質量%)を求めた。
大塚電子製MCPD-300、光路長1cmの石英標準セルを用いて、超純水をブランクとして、溶媒の波長400nmにおける光透過率を測定した。
パーキン・エルマー製ElanDRC II 誘導結合プラズマ質量分析(ICP-MS)を用い、溶媒に含まれる金属成分を定量した。
[固形分濃度]
アルミシャーレにポリイミド前駆体組成物1gを量り取り、200℃の熱風循環オーブン中で2時間加熱して固形分以外を除去し、その残分の質量より固形分濃度(質量%)を求めた。
東機産業製TV-22 E型回転粘度計を用い、温度25℃、せん断速度20sec-1でのポリイミド前駆体溶液の粘度を求めた。
濃度0.5g/dLのポリイミド前駆体のN,N-ジメチルアセトアミド溶液を、ウベローデ粘度計を用いて、30℃で測定し、対数粘度を求めた。
10質量%のポリイミド前駆体溶液となる様に、ポリイミド前駆体をN,N-ジメチルアセトアミドで希釈した。調製した溶液を用い、大塚電子製MCPD-300、光路長1cmの標準セルを用いて、N,N-ジメチルアセトアミドをブランクとし、10質量%のポリイミド前駆体溶液の波長400nmにおける光透過率を測定した。
[400nm光透過率、全光透過率]
大塚電子製MCPD-300を用いて、膜厚10μmのポリイミド膜の400nmにおける光透過率と、全光透過率(380nm~780nmにおける平均透過率)を測定した。
膜厚10μmのポリイミドフィルムをIEC450規格のダンベル形状に打ち抜いて試験片とし、ORIENTEC社製TENSILONを用いて、チャック間長30mm、引張速度2mm/minで、初期の弾性率、破断伸度を測定した。
膜厚約10μmのポリイミドフィルムを幅4mmの短冊状に切り取って試験片とし、島津製作所製TMA-50を用い、チャック間長15mm、荷重2g、昇温速度20℃/minで300℃まで昇温した。得られたTMA曲線から、50℃から200℃までの平均線膨張係数を求めた。
膜厚約10μmのポリイミドフィルムを幅4mmの短冊状に切り取って試験片とし、温度25℃、湿度50%RHの条件下、曲率半径1mmで折り曲げた。その後の試験片を目視で確認し、異常がないものを○、クラックが生じたものを×で示した。
膜厚約10μmのポリイミド膜を温度25℃の条件下、N,N-ジメチルアセトアミドに1時間浸漬した後、膜の状態を目視で確認した。異常がないものを○、しわや一部形状が変化したものを△、溶解したり、顕著に形状が変化したものを×で示した。
膜厚10μmのポリイミドフィルムを試験片とし、エスアイアイ・ナノテクノロジー製 示差熱熱重量同時測定装置(TG/DTA6300)を用い、窒素気流中、昇温速度10℃/minで25℃から600℃まで昇温した。得られた重量曲線から、5%重量減少温度を求めた。
膜厚約30μmのポリイミドフィルムを試験片とし、東洋精機製作所製 キャンドル燃焼試験機D型を用い、JIS K7201に準拠した方法(試験片形状:V型 140mm×52mm×約30μm)で求めた。
DABAN: 4,4’-ジアミノベンズアニリド〔純度:99.90%(GC分析)〕
4-APTP: N,N’-ビス(4-アミノフェニル)テレフタルアミド〔純度:99.95%(GC分析)〕
ODA: 4,4’-オキシジアニリン〔純度:99.9%(GC分析)〕
PPD: p-フェニレンジアミン〔純度:99.9%(GC分析)〕
TFMB: 2,2’-ビス(トリフルオロメチル)ベンジジン〔純度:99.83%(GC分析)〕
BABA: N,N’-p-フェニレンビス(p-アミノベンズアミド)〔純度:99%(LC分析)〕
AZDA: 2,4-ビス(4-アミノアニリノ)-6-アニリノ-1,3,5-トリアジン〔純度:99.9%(GC分析)〕
[テトラカルボン酸成分]
PMDA-HS: 1R,2S,4S,5R-シクロヘキサンテトラカルボン酸二無水物〔PMDA-HSとしての純度:92.7%(GC分析),水素化ピロメリット酸二無水物(立体異性体の混合物)としての純度:99.9%(GC分析)〕
BPDA-H: 3,3’,4,4’-ビシクロヘキシルテトラカルボン酸二無水物(立体異性体の混合物)〔純度:99.9%(GC分析)〕
cis/cis-BTA-H: 1rC7-ビシクロ[2.2.2]オクタン-2c,3c,5c,6c-テトラカルボン酸-2,3:5,6-二無水物〔cis/cis-BTA-Hとしての純度:99.9%(GC分析)〕
DNDAxx:(4arH,8acH)-デカヒドロ-1t,4t:5c,8c-ジメタノナフタレン-2t,3t,6c,7c-テトラカルボン酸二無水物〔DNDAxxとしての純度:99.2%(GC分析)〕
DNDAdx:(4arH,8acH)-デカヒドロ-1t,4t:5c,8c-ジメタノナフタレン-2c,3c,6c,7c-テトラカルボン酸二無水物〔DNDAdxとしての純度:99.7%(GC分析)〕
[ジアミン、酸二無水物溶液の透過率]
BSA: N,O-ビス(トリメチルシリル)アセトアミド
[溶媒]
DMAc: N,N-ジメチルアセトアミド
[溶媒(N,N-ジメチルアセトアミド)の純度]
GC分析:
主成分の保持時間(min) 14.28
主成分の面積% 99.9929
短保持時間不純物のピーク面積% 0.0000
長保持時間不純物のピーク面積% 0.0071
不揮発分(質量%) <0.001
光透過率:
400nm光透過率(%) 92
還流後の400nm光透過率(%) 92
金属分:
Na(ppb) 150
Fe(ppb) <2
Cu(ppb) <2
Mo(ppb) <1
窒素ガスで置換した反応容器中にDABAN 2.27g(10ミリモル)を入れ、N,N-ジメチルアセトアミドを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が15質量%となる量の25.55gを加え、50℃で2時間攪拌した。この溶液にPMDA-HS 2.23g(10ミリモル)を徐々に加えた。50℃で6時間撹拌し、均一で粘稠なポリイミド前駆体溶液を得た。
ジアミン成分、カルボン酸成分を表4-1に記載した化学組成とし、溶媒のN,N-ジメチルアセトアミドは、それぞれ仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が、15質量%となる量を用いた以外は、実施例1と同様にして、ポリイミド前駆体溶液、ポリイミドフィルムを得た。
窒素ガスで置換した反応容器中にDABAN 2.27g(10ミリモル)を入れ、N,N-ジメチルアセトアミドを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の21.16gを加え、50℃で2時間攪拌した。この溶液にDNDAxx 2.11g(7ミリモル)とDNDAdx 0.91g(3ミリモル)を徐々に加えた。50℃で6時間撹拌し、均一で粘稠なポリイミド前駆体溶液を得た。そして、実施例1と同様にしてフィルム化を行い、ポリイミドフィルムを得た。
窒素ガスで置換した反応容器中にDABAN 2.27g(10ミリモル)を入れ、N,N-ジメチルアセトアミドを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の21.16gを加え、50℃で2時間攪拌した。この溶液にDNDAxx 3.02g(10ミリモル)を徐々に加えた。50℃で6時間撹拌し、均一で粘稠なポリイミド前駆体溶液を得た。そして、実施例1と同様にしてフィルム化を行い、ポリイミドフィルムを得た。
窒素ガスで置換した反応容器中にDABAN 2.27g(10ミリモル)を入れ、N,N-ジメチルアセトアミドを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の18.06gを加え、室温で1時間攪拌した。この溶液にBSA 4.07g(20ミリモル)を加え、室温で3時間攪拌した。次いで、この溶液にPMDA-HS 2.24g(10ミリモル)を徐々に加えた。室温で6時間撹拌し、均一で粘稠なポリイミド前駆体溶液を得た。そして、実施例1と同様にしてフィルム化を行い、ポリイミドフィルムを得た。
窒素ガスで置換した反応容器中にDABAN 2.05g(9ミリモル)とPPD 0.11g(1ミリモル)を入れ、N,N-ジメチルアセトアミドを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の17.45gを加え、室温で1時間攪拌した。この溶液にPMDA-HS 2.24g(10ミリモル)を徐々に加えた。室温で6時間撹拌し、均一で粘稠なポリイミド前駆体溶液を得た。そして、実施例1と同様にしてフィルム化を行い、ポリイミドフィルムを得た。
窒素ガスで置換した反応容器中にDABAN 2.05g(9ミリモル)とTFMB 0.32g(1ミリモル)を入れ、N,N-ジメチルアセトアミドを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の18.04gを加え、室温で1時間攪拌した。この溶液にPMDA-HS 2.24g(10ミリモル)を徐々に加えた。室温で6時間撹拌し、均一で粘稠なポリイミド前駆体溶液を得た。そして、実施例1と同様にしてフィルム化を行い、ポリイミドフィルムを得た。
窒素ガスで置換した反応容器中に4-APTP 3.46g(10ミリモル)を入れ、N,N-ジメチルアセトアミドを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の25.29gを加え、50℃で2時間攪拌した。この溶液にDNDAxx 3.02g(10ミリモル)を徐々に加えた。50℃で6時間撹拌し、均一で粘稠なポリイミド前駆体溶液を得た。そして、実施例1と同様にしてフィルム化を行い、ポリイミドフィルムを得た。
窒素ガスで置換した反応容器中にDABAN 2.27g(10ミリモル)を入れ、N,N-ジメチルアセトアミドを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の21.16gを加え、50℃で2時間攪拌した。この溶液にDNDAxx 3.02g(10ミリモル)を徐々に加えた。50℃で6時間撹拌し、均一で粘稠なポリイミド前駆体溶液を得た。その溶液にBSA 4.07g(20ミリモル)を加え、12時間攪拌した。そして、実施例1と同様にしてフィルム化を行い、ポリイミドフィルムを得た。
窒素ガスで置換した反応容器中に4-APTP 3.46g(10ミリモル)を入れ、N,N-ジメチルアセトアミドを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が15質量%となる量の36.72gを加え、50℃で2時間攪拌した。この溶液にDNDAxx 3.02g(10ミリモル)を徐々に加えた。50℃で6時間撹拌し、均一で粘稠なポリイミド前駆体溶液を得た。その溶液にBSA 2.03g(10ミリモル)を加え、12時間攪拌した。そして、実施例1と同様にしてフィルム化を行い、ポリイミドフィルムを得た。
窒素ガスで置換した反応容器中にDABAN 1.59g(7ミリモル)とPPD 0.32g(3ミリモル)を入れ、N,N-ジメチルアセトアミドを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の19.85gを加え、室温で1時間攪拌した。この溶液にDNDAxx 3.02g(10ミリモル)を徐々に加えた。室温で6時間撹拌し、均一で粘稠なポリイミド前駆体溶液を得た。そして、実施例1と同様にしてフィルム化を行い、ポリイミドフィルムを得た。
窒素ガスで置換した反応容器中にDABAN 1.59g(7ミリモル)とTFMB 0.96g(3ミリモル)を入れ、N,N-ジメチルアセトアミドを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の22.59gを加え、室温で1時間攪拌した。この溶液にDNDAxx 3.02g(10ミリモル)を徐々に加えた。室温で6時間撹拌し、均一で粘稠なポリイミド前駆体溶液を得た。そして、実施例1と同様にしてフィルム化を行い、ポリイミドフィルムを得た。
窒素ガスで置換した反応容器中に4-APTP 2.42g(7ミリモル)とPPD 0.32g(3ミリモル)を入れ、N,N-ジメチルアセトアミドを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の21.79gを加え、室温で1時間攪拌した。この溶液にDNDAxx 3.02g(10ミリモル)を徐々に加えた。室温で6時間撹拌し、均一で粘稠なポリイミド前駆体溶液を得た。そして、実施例1と同様にしてフィルム化を行い、ポリイミドフィルムを得た。
窒素ガスで置換した反応容器中にDABAN 1.59g(7ミリモル)とPPD 0.32g(3ミリモル)を入れ、N,N-ジメチルアセトアミドを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の19.75gを加え、室温で1時間攪拌した。この溶液にDNDAxx 3.02g(10ミリモル)を徐々に加えた。室温で6時間撹拌し、均一で粘稠なポリイミド前駆体溶液を得た。その溶液にBSA 4.07g(20ミリモル)を加え、12時間攪拌した。そして、実施例1と同様にしてフィルム化を行い、ポリイミドフィルムを得た。
窒素ガスで置換した反応容器中にBABA 3.46g(10ミリモル)を入れ、N,N-ジメチルアセトアミドを、仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の25.94gを加え、室温で1時間攪拌した。この溶液にDNDAxx 3.02g(10ミリモル)を徐々に加えた。室温で6時間撹拌し、均一で粘稠なポリイミド前駆体溶液を得た。そして、実施例1と同様にしてフィルム化を行い、ポリイミドフィルムを得た。
ジアミン成分、カルボン酸成分を表4-2に記載した化学組成とし、溶媒のN,N-ジメチルアセトアミドは、それぞれ仕込みモノマー総質量(ジアミン成分とカルボン酸成分の総和)が、比較例1,2では15質量%となる量、比較例3,4では20質量%となる量を用いた以外は、実施例1と同様にして、ポリイミド前駆体溶液、ポリイミドフィルムを得た。
窒素ガスで置換した反応容器中にAZDA 3.84g(10ミリモル)を入れ、N,N-ジメチルアセトアミドを仕込みモノマー(ジアミン成分とカルボン酸成分の総和)が15質量%となる量の34.49gを加え、50℃で2時間攪拌した。
窒素ガスで置換した反応容器中にAZDA 3.84g(10ミリモル)を入れ、N,N-ジメチルアセトアミドを仕込みモノマー(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の27.44gを加え、50℃で2時間攪拌した。
このポリイミド前駆体溶液、ポリイミドフィルムの特性を測定した結果を表5に示す。
窒素ガスで置換した反応容器中にAZDA 3.84g(10ミリモル)を入れ、N,N-ジメチルアセトアミドを仕込みモノマー(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の27.44gを加え、50℃で2時間攪拌した。
窒素ガスで置換した反応容器中にODA 2.00g(10ミリモル)を入れ、N,N-ジメチルアセトアミドを仕込みモノマー(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の16.98gを加え、50℃で2時間攪拌した。
窒素ガスで置換した反応容器中にODA 2.00g(10ミリモル)を入れ、N,N-ジメチルアセトアミドを仕込みモノマー(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の20.08gを加え、50℃で2時間攪拌した。
窒素ガスで置換した反応容器中にODA 2.00g(10ミリモル)を入れ、N,N-ジメチルアセトアミドを仕込みモノマー(ジアミン成分とカルボン酸成分の総和)が20質量%となる量の20.08gを加え、50℃で2時間攪拌した。
Claims (12)
- Bが、下記化学式(4-1)~(4-4)からなる群から選択される1種以上であることを特徴とする請求項1または2に記載のポリイミド前駆体。
- 全テトラカルボン酸成分100モル%中、化学式(1)で表される繰り返し単位を与えるテトラカルボン酸成分を70モル%以上、それ以外のテトラカルボン酸成分を30モル%以下で含むテトラカルボン酸成分と、全ジアミン成分100モル%中、化学式(1)で表される繰り返し単位を与えるジアミン成分を70モル%以上、それ以外のジアミン成分を30モル%以下で含むジアミン成分とから得られることを特徴とする請求項1~3のいずれかに記載のポリイミド前駆体。
- 純度(複数の立体異性体を含む場合は、それらを区別せず同一成分と見なした場合の純度)が99%以上のテトラカルボン酸成分と、純度が99%以上のジアミン成分とから得られることを特徴とする請求項1~4のいずれかに記載のポリイミド前駆体。
- 光透過率が70%以上のテトラカルボン酸成分(但し、テトラカルボン酸成分の光透過率は、2規定水酸化ナトリウム溶液に10質量%の濃度に溶解して得られた溶液に対する波長400nm、光路長1cmの透過率を表す。)と、光透過率が30%以上のジアミン成分(但し、ジアミン成分の光透過率は、メタノール、水、N,N-ジメチルアセトアミド、酢酸もしくはこれらの塩酸溶液に、8質量%の濃度に溶解して得られた溶液に対する波長400nm、光路長1cmの透過率を表す。)とから得られることを特徴とする請求項1~5のいずれかに記載のポリイミド前駆体。
- N,N-ジメチルホルムアミド、N,N-ジメチルアセトアミド、N-メチル-2-ピロリドン、N-エチル-2-ピロリドン、1,3-ジメチル-2-イミダゾリジノン、ジメチルスルホオキシド及び水より選ばれる溶媒に10質量%の濃度に溶解して得られた溶液に対する波長400nm、光路長1cmの光透過率が40%以上であることを特徴とする請求項1~6のいずれかに記載のポリイミド前駆体。
- 請求項1~7のいずれかに記載のポリイミド前駆体が溶媒中に溶解しているポリイミド前駆体溶液組成物であって、
前記溶媒の波長400nm、光路長1cmの光透過率が89%以上であることを特徴とするポリイミド前駆体溶液組成物。 - 前記化学式(5)中のAは、脂肪族の4価の基であり、Bは、化学構造中に少なくとも一つの前記化学式(2)の化学構造を有する2価の基であって、酸素指数が22%(体積分率)以上であることを特徴とする請求項9に記載のポリイミド。
- 脂肪族テトラカルボン酸成分とジアミン成分とを反応して得られたポリイミドであって、酸素指数が22%(体積分率)以上であることを特徴とするポリイミド。
- 請求項8に記載のポリイミド前駆体溶液組成物を用いて得られたポリイミド、又は請求項9~11のいずれかに記載のポリイミドによって形成されたことを特徴とするディスプレイ用、タッチパネル用、または太陽電池用の基板。
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TW201300440A (zh) | 2013-01-01 |
TW201623373A (zh) | 2016-07-01 |
CN105254883A (zh) | 2016-01-20 |
JP2016164271A (ja) | 2016-09-08 |
JPWO2012124664A1 (ja) | 2014-07-24 |
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