WO2022250007A1 - Agent d'alignement de cristaux liquides, film d'alignement de cristaux liquides, élément d'affichage à cristaux liquides, diamine et polymère - Google Patents
Agent d'alignement de cristaux liquides, film d'alignement de cristaux liquides, élément d'affichage à cristaux liquides, diamine et polymère Download PDFInfo
- Publication number
- WO2022250007A1 WO2022250007A1 PCT/JP2022/021080 JP2022021080W WO2022250007A1 WO 2022250007 A1 WO2022250007 A1 WO 2022250007A1 JP 2022021080 W JP2022021080 W JP 2022021080W WO 2022250007 A1 WO2022250007 A1 WO 2022250007A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid crystal
- group
- integer
- diamine
- aligning agent
- Prior art date
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 237
- 150000004985 diamines Chemical class 0.000 title claims abstract description 112
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 68
- 229920000642 polymer Polymers 0.000 title claims abstract description 49
- 239000004642 Polyimide Substances 0.000 claims abstract description 44
- 229920001721 polyimide Polymers 0.000 claims abstract description 44
- 239000002243 precursor Substances 0.000 claims abstract description 29
- 239000000758 substrate Substances 0.000 claims description 66
- 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 claims description 45
- 238000000034 method Methods 0.000 claims description 33
- 125000004432 carbon atom Chemical group C* 0.000 claims description 28
- 238000006243 chemical reaction Methods 0.000 claims description 26
- 125000006158 tetracarboxylic acid group Chemical group 0.000 claims description 26
- 210000002858 crystal cell Anatomy 0.000 claims description 21
- 150000000000 tetracarboxylic acids Chemical class 0.000 claims description 21
- 238000000576 coating method Methods 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 19
- 125000000217 alkyl group Chemical group 0.000 claims description 18
- 125000005843 halogen group Chemical group 0.000 claims description 18
- 125000003545 alkoxy group Chemical group 0.000 claims description 17
- 125000002723 alicyclic group Chemical group 0.000 claims description 14
- 150000004984 aromatic diamines Chemical class 0.000 claims description 12
- 125000003118 aryl group Chemical group 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 11
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 10
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims description 7
- 125000001931 aliphatic group Chemical group 0.000 claims description 6
- 125000002015 acyclic group Chemical group 0.000 claims description 5
- 125000003342 alkenyl group Chemical group 0.000 claims description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 5
- 125000001424 substituent group Chemical group 0.000 claims description 5
- 238000006116 polymerization reaction Methods 0.000 claims description 4
- 125000005842 heteroatom Chemical group 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 3
- 125000000962 organic group Chemical group 0.000 claims description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 3
- 239000011203 carbon fibre reinforced carbon Substances 0.000 claims description 2
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 claims description 2
- 238000006068 polycondensation reaction Methods 0.000 claims description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 70
- 229920005575 poly(amic acid) Polymers 0.000 description 46
- 150000001875 compounds Chemical class 0.000 description 36
- -1 diamine compound Chemical class 0.000 description 33
- 239000000243 solution Substances 0.000 description 29
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 28
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Chemical compound CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 description 28
- 239000000203 mixture Substances 0.000 description 27
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 22
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 22
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 21
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 20
- 239000007787 solid Substances 0.000 description 18
- 238000003786 synthesis reaction Methods 0.000 description 18
- 239000000565 sealant Substances 0.000 description 17
- 239000002904 solvent Substances 0.000 description 16
- 230000015572 biosynthetic process Effects 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 15
- 238000010438 heat treatment Methods 0.000 description 14
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 description 13
- 239000013078 crystal Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 11
- 238000011156 evaluation Methods 0.000 description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 229910052731 fluorine Inorganic materials 0.000 description 10
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 10
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 9
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 9
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 9
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 9
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 9
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 9
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 150000002148 esters Chemical class 0.000 description 8
- 125000001153 fluoro group Chemical group F* 0.000 description 8
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 7
- 238000005227 gel permeation chromatography Methods 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- PTTPXKJBFFKCEK-UHFFFAOYSA-N 2-Methyl-4-heptanone Chemical compound CC(C)CC(=O)CC(C)C PTTPXKJBFFKCEK-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 125000003277 amino group Chemical group 0.000 description 6
- 210000004027 cell Anatomy 0.000 description 6
- UYAAVKFHBMJOJZ-UHFFFAOYSA-N diimidazo[1,3-b:1',3'-e]pyrazine-5,10-dione Chemical compound O=C1C2=CN=CN2C(=O)C2=CN=CN12 UYAAVKFHBMJOJZ-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- MBHINSULENHCMF-UHFFFAOYSA-N n,n-dimethylpropanamide Chemical compound CCC(=O)N(C)C MBHINSULENHCMF-UHFFFAOYSA-N 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 229940116423 propylene glycol diacetate Drugs 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- AVQQQNCBBIEMEU-UHFFFAOYSA-N 1,1,3,3-tetramethylurea Chemical compound CN(C)C(=O)N(C)C AVQQQNCBBIEMEU-UHFFFAOYSA-N 0.000 description 5
- RRQYJINTUHWNHW-UHFFFAOYSA-N 1-ethoxy-2-(2-ethoxyethoxy)ethane Chemical compound CCOCCOCCOCC RRQYJINTUHWNHW-UHFFFAOYSA-N 0.000 description 5
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 239000002981 blocking agent Substances 0.000 description 5
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 5
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 5
- 229940019778 diethylene glycol diethyl ether Drugs 0.000 description 5
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- KJAMZCVTJDTESW-UHFFFAOYSA-N tiracizine Chemical compound C1CC2=CC=CC=C2N(C(=O)CN(C)C)C2=CC(NC(=O)OCC)=CC=C21 KJAMZCVTJDTESW-UHFFFAOYSA-N 0.000 description 5
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 4
- 238000005160 1H NMR spectroscopy Methods 0.000 description 4
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- 125000004018 acid anhydride group Chemical group 0.000 description 4
- 150000008065 acid anhydrides Chemical class 0.000 description 4
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- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 4
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- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 4
- 229940075557 diethylene glycol monoethyl ether Drugs 0.000 description 4
- 230000001747 exhibiting effect Effects 0.000 description 4
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- 125000001624 naphthyl group Chemical group 0.000 description 4
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- 238000002360 preparation method Methods 0.000 description 4
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- ZFPGARUNNKGOBB-UHFFFAOYSA-N 1-Ethyl-2-pyrrolidinone Chemical compound CCN1CCCC1=O ZFPGARUNNKGOBB-UHFFFAOYSA-N 0.000 description 3
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- VATRWWPJWVCZTA-UHFFFAOYSA-N 3-oxo-n-[2-(trifluoromethyl)phenyl]butanamide Chemical compound CC(=O)CC(=O)NC1=CC=CC=C1C(F)(F)F VATRWWPJWVCZTA-UHFFFAOYSA-N 0.000 description 3
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
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- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
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- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 3
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- 125000006850 spacer group Chemical group 0.000 description 3
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- GPHYIQCSMDYRGJ-UHFFFAOYSA-N (3,5-dinitrophenyl)methanol Chemical compound OCC1=CC([N+]([O-])=O)=CC([N+]([O-])=O)=C1 GPHYIQCSMDYRGJ-UHFFFAOYSA-N 0.000 description 2
- OLQWMCSSZKNOLQ-ZXZARUISSA-N (3s)-3-[(3r)-2,5-dioxooxolan-3-yl]oxolane-2,5-dione Chemical compound O=C1OC(=O)C[C@H]1[C@@H]1C(=O)OC(=O)C1 OLQWMCSSZKNOLQ-ZXZARUISSA-N 0.000 description 2
- MQQRFOXFIPBFOV-UHFFFAOYSA-N 1,2-dimethylcyclobutane-1,2,3,4-tetracarboxylic acid Chemical compound OC(=O)C1(C)C(C(O)=O)C(C(O)=O)C1(C)C(O)=O MQQRFOXFIPBFOV-UHFFFAOYSA-N 0.000 description 2
- 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
- NVFAXWPOXRZRPW-UHFFFAOYSA-N 1,3-difluorocyclobutane-1,2,3,4-tetracarboxylic acid Chemical compound OC(=O)C1C(F)(C(O)=O)C(C(O)=O)C1(F)C(O)=O NVFAXWPOXRZRPW-UHFFFAOYSA-N 0.000 description 2
- SBHHKGFHJWTZJN-UHFFFAOYSA-N 1,3-dimethylcyclobutane-1,2,3,4-tetracarboxylic acid Chemical compound OC(=O)C1(C)C(C(O)=O)C(C)(C(O)=O)C1C(O)=O SBHHKGFHJWTZJN-UHFFFAOYSA-N 0.000 description 2
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 2
- LDQMZKBIBRAZEA-UHFFFAOYSA-N 2,4-diaminobenzoic acid Chemical compound NC1=CC=C(C(O)=O)C(N)=C1 LDQMZKBIBRAZEA-UHFFFAOYSA-N 0.000 description 2
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 2
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 2
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- UENRXLSRMCSUSN-UHFFFAOYSA-M 3,5-diaminobenzoate Chemical compound NC1=CC(N)=CC(C([O-])=O)=C1 UENRXLSRMCSUSN-UHFFFAOYSA-M 0.000 description 2
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- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-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
- YBRVSVVVWCFQMG-UHFFFAOYSA-N 4,4'-diaminodiphenylmethane Chemical compound C1=CC(N)=CC=C1CC1=CC=C(N)C=C1 YBRVSVVVWCFQMG-UHFFFAOYSA-N 0.000 description 2
- QYIMZXITLDTULQ-UHFFFAOYSA-N 4-(4-amino-2-methylphenyl)-3-methylaniline Chemical group CC1=CC(N)=CC=C1C1=CC=C(N)C=C1C QYIMZXITLDTULQ-UHFFFAOYSA-N 0.000 description 2
- NRHZAVJNUJCQRL-UHFFFAOYSA-N 4-[4-(4-aminophenyl)piperazin-1-yl]aniline Chemical compound C1=CC(N)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 NRHZAVJNUJCQRL-UHFFFAOYSA-N 0.000 description 2
- NVKGJHAQGWCWDI-UHFFFAOYSA-N 4-[4-amino-2-(trifluoromethyl)phenyl]-3-(trifluoromethyl)aniline Chemical group FC(F)(F)C1=CC(N)=CC=C1C1=CC=C(N)C=C1C(F)(F)F NVKGJHAQGWCWDI-UHFFFAOYSA-N 0.000 description 2
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- OAXARSVKYJPDPA-UHFFFAOYSA-N tert-butyl 4-prop-2-ynylpiperazine-1-carboxylate Chemical compound CC(C)(C)OC(=O)N1CCN(CC#C)CC1 OAXARSVKYJPDPA-UHFFFAOYSA-N 0.000 description 1
- UXUDDWYULYBTAU-UHFFFAOYSA-N tert-butyl N-[2-(4-aminophenyl)ethyl]-N-[(4-aminophenyl)methyl]carbamate Chemical compound C(C)(C)(C)OC(=O)N(CC1=CC=C(C=C1)N)CCC1=CC=C(C=C1)N UXUDDWYULYBTAU-UHFFFAOYSA-N 0.000 description 1
- QJCDVCHGSLKQFZ-UHFFFAOYSA-N tert-butyl N-[5-amino-2-[(4-aminobenzoyl)amino]phenyl]carbamate Chemical compound CC(C)(C)OC(=O)NC1=CC(N)=CC=C1NC(=O)C1=CC=C(N)C=C1 QJCDVCHGSLKQFZ-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
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- 125000003944 tolyl group Chemical group 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- WBYWAXJHAXSJNI-VOTSOKGWSA-M trans-cinnamate Chemical group [O-]C(=O)\C=C\C1=CC=CC=C1 WBYWAXJHAXSJNI-VOTSOKGWSA-M 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- FRGPKMWIYVTFIQ-UHFFFAOYSA-N triethoxy(3-isocyanatopropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCN=C=O FRGPKMWIYVTFIQ-UHFFFAOYSA-N 0.000 description 1
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
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- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
Definitions
- the present invention relates to a liquid crystal aligning agent, a liquid crystal aligning film obtained from the liquid crystal aligning agent, a liquid crystal display element comprising the liquid crystal aligning film, and a novel diamine and polymer suitable for them.
- Liquid crystal display elements are used in a wide range of applications, from small applications such as mobile phones and smartphones to relatively large applications such as televisions and monitors.
- a liquid crystal display element is generally constructed by arranging a pair of electrode substrates so as to face each other with a predetermined gap (several ⁇ m) and sealing liquid crystal between the electrode substrates. By applying a voltage between the transparent conductive films forming the respective electrodes of the electrode substrate, the display on the liquid crystal display element is performed.
- These liquid crystal display elements have liquid crystal alignment films that are indispensable for controlling the alignment state of liquid crystal molecules.
- Patent Document 1 discloses a polyimide alignment film obtained by using a diamine compound having a specific structure containing a triazine ring as a liquid crystal alignment film in which the pretilt angle of liquid crystal molecules can be easily adjusted.
- liquid crystal display element various drive systems having different electrode structures, different physical properties of liquid crystal molecules to be used, etc. have been developed. For example, various modes such as TN (Twisted Nematic) method, STN (Super Twisted Nematic) method, VA (Vertical Alignment) method, IPS (In-Plane Switching) method, and FFS (Fringe Field Switching) method are known. .
- TN Transmission Nematic
- STN Super Twisted Nematic
- VA Very Alignment
- IPS In-Plane Switching
- FFS Frringe Field Switching
- VA vertical alignment liquid crystal display elements have a wide viewing angle, fast response speed, high contrast, and can eliminate the need for rubbing in the production process. It is widely used mainly for monitors and monitors (Patent Documents 2 and 3).
- a touch panel type liquid crystal display must be highly durable against external pressure such as pressure from a finger or a pointing device such as a pen. is required.
- tablet terminals and mobile terminals are becoming lighter and thinner, and in the process of assembling the panels during the manufacture of liquid crystal displays, the panels are more likely to be distorted or subjected to stress inside the panels. Such distortion and stress of the panel cause peeling of the alignment film from the substrate, and cause defective bright spots and defective alignment. Therefore, the liquid crystal alignment film is required to be resistant to substrate peeling.
- the present invention provides at least one polymer selected from the group consisting of a polyimide precursor obtained using a diamine component containing a diamine represented by the following formula (1) and a polyimide that is an imidized product of the polyimide precursor ( P), a liquid crystal alignment film obtained from the liquid crystal alignment agent, and a liquid crystal display element having the liquid crystal alignment film.
- the liquid crystal aligning agent which can obtain the liquid crystal aligning agent which a board
- the diamine for obtaining the polymer (P) of the present invention has a structure in which an aromatic ring containing a diamine moiety and a benzene ring having an aromatic hydroxyl group are linked by a specific linking group.
- the aromatic hydroxyl group has a structure with little steric hindrance and has the effect of enhancing the interaction between the alignment film and the substrate.
- the polymer (P) since the polymer (P) has the above-mentioned aromatic hydroxyl group in the side chain portion of the polymer and has a structure with improved flexibility, the reactivity between the aromatic hydroxyl group and the sealing agent is increased, resulting in high sealing performance. It is considered that a liquid crystal alignment film having adhesion and high voltage holding characteristics was obtained.
- the above-mentioned specific linking group has a structure that includes a hetero atom, an ester group, an amide bond, etc. in the alkyl chain, it has more suitable polarity and rigidity in the molecule than linking only with the alkyl chain. can be given. Therefore, it is considered that the rigidity of the product of the aromatic hydroxyl group and the sealing agent is improved, so that the liquid crystal aligning agent that is less likely to be peeled off from the substrate can be obtained, and the liquid crystal display element having high durability against external pressure can be obtained. .
- the liquid crystal aligning agent of the present invention is a polyimide precursor obtained using a diamine component containing a diamine represented by the above formula (1) (hereinafter also referred to as a specific diamine) and the polyimide precursor It is characterized by containing at least one polymer (P) selected from the group consisting of polyimides which are imidized substances.
- the diamine represented by Formula (1) (excluding some diamines) is also the subject of the present invention.
- a polymer obtained using a diamine component containing the diamine represented by formula (1) is also an object of the present invention.
- L in the above formula (1) is —(CH 2 ) n —O— (n is an integer of 1 to 6)), —(CH 2 ) n —, from the viewpoint of suitably obtaining the effects of the present invention.
- diamine represented by the above formula (1) include diamines represented by any of the following formulas (d1-1) to (d1-11). Among them, diamines represented by any one of (d1-1) to (d1-3) are more preferable from the viewpoint of suitably obtaining the effects of the present invention.
- diamine represented by the above formula (1) include diamines represented by any of the following formulas (d2-1) to (d2-6). Among them, diamines represented by any one of (d2-1) to (d2-3) are more preferable from the viewpoint of suitably obtaining the effects of the present invention.
- the polymer (P) contained in the liquid crystal aligning agent of the present invention is a polyimide precursor obtained using a diamine component containing the specific diamine, or a polyimide that is an imidized product of the polyimide precursor.
- the polyimide precursor is a polymer from which a polyimide can be obtained by imidating polyamic acid, polyamic acid ester, or the like.
- a polyamic acid (P′), which is a polyimide precursor of the polymer (P) can be obtained by a polymerization reaction between a diamine component containing the specific diamine and a tetracarboxylic acid component.
- the specific diamines may be used singly or in combination of two or more. In this case, the amount of the specific diamine used is preferably 5 mol % or more, more preferably 10 mol % or more, and even more preferably 20 mol % or more, relative to the total diamine component.
- the diamine component used for producing the polyamic acid (P') may contain a diamine other than the specific diamine (hereinafter also referred to as other diamine).
- a diamine other than the specific diamine hereinafter also referred to as other diamine.
- the amount of the specific diamine used is preferably 90 mol % or less, more preferably 80 mol % or less, relative to the diamine component. Examples of other diamines are listed below, but the present invention is not limited to these.
- the other diamines may be used singly or in combination of two or more.
- diamines having an amide bond such as 4,4′-diaminobenzanilide, 1,3-bis(4-aminophenyl)urea, 1,3-bis(4-aminobenzyl)urea, 1,3-bis( diamines having a urea bond such as 4-aminophenethyl)urea; 4,4′-sulfonyldianiline, 3,3′-sulfonyldianiline, bis(4-aminophenyl)silane, bis(3-aminophenyl)silane, dimethyl-bis(4-aminophenyl)silane, dimethyl-bis(3-aminophenyl)silane, 4,4'-thiodianiline, 3,3'-thiodianiline, 3,3'-diaminodiphenyl ether, 3,4'-diamino diphenyl ether, 4,4'-diaminodiphenyl ether, 2,2'
- Diamines having a siloxane bond such as 1,3-bis(3-aminopropyl)-tetramethyldisiloxane, bis(p-aminophenylcarbamoylpropyl)tetramethyldisiloxane; meta-xylylenediamine, 1,3-propanediamine, Tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, 1,3-bis(aminomethyl)cyclohexane, 1,4-diaminocyclohexane, 4,4′-methylenebis(cyclohexylamine), the formula described in WO2018/117239 ( Y-1) to a diamine in which two amino groups are bonded to a group represented by any one of (Y-167), etc.
- A represents a monovalent group in which two primary amino groups are bonded to an aromatic group.
- aromatic groups include benzene rings, naphthalene rings, and biphenyl structures.
- X is a single bond, —(CH 2 ) a — (a is an integer of 1 to 15), —CONH—, —NHCO—, —CO—N(CH 3 )—, —NH—, —O -, -COO-, -OCO- or -((CH 2 ) a1 -A 1 ) m1 - (a1 is an integer of 1 to 15, A 1 represents an oxygen atom or -COO-, m1 is 1 to is an integer of 2.
- J represents a monovalent organic group having at least one group selected from the group consisting of an alicyclic hydrocarbon group having 4 to 40 carbon atoms and an aromatic hydrocarbon group having 6 to 40 carbon atoms, with the proviso that At least one of the hydrogen atoms of the alicyclic hydrocarbon group and the aromatic hydrocarbon group is a halogen atom, a halogen atom-containing alkyl group, a halogen atom-containing alkoxy group, an alkyl group having 3 to 10 carbon atoms, or 3 carbon atoms.
- alkoxy groups alkenyl groups having 3 to 10 carbon atoms, halogen atom-containing alkyl groups, halogen atom-containing alkoxy groups, alkyl groups having 3 to 10 carbon atoms, alkoxy groups having 3 to 10 carbon atoms, and 3 carbon atoms
- the carbon-carbon bond of any methylene group of the alkenyl group from 1 to 10 is replaced with a substituent selected from the group consisting of heteroatom-containing groups interrupted by oxygen atoms.
- J is a monovalent organic group having two or more at least one group selected from the group consisting of an alicyclic hydrocarbon group having 4 to 40 carbon atoms and an aromatic hydrocarbon group having 6 to 40 carbon atoms.
- At least one alicyclic hydrocarbon group or aromatic hydrocarbon group may have the substituents exemplified above, and the other alicyclic hydrocarbon groups or aromatic hydrocarbon groups of J are It may be unsubstituted or have substituents other than those exemplified above.
- halogen atom-containing alkyl groups include halogen atom-containing alkyl groups having 1 to 10 carbon atoms.
- Halogen atom-containing alkoxy groups include, for example, halogen atom-containing alkoxy groups having 1 to 10 carbon atoms.
- Examples of the alicyclic hydrocarbon group for J include cyclobutane ring, cyclopentane ring, cyclohexane ring, cyclodecane ring, steroid skeleton (e.g., cholestanyl group, cholesteryl group, lanostanyl group, etc.), and the like.
- a benzene ring, a naphthalene ring, etc. can be mentioned as a hydrogen group.
- examples of the group "-XJ" include the following structure (S1), and more preferred structures are the following formulas (S1-1) to (S1-5) can be mentioned.
- (X 1 is a single bond, —(CH 2 ) a — (a is an integer of 1 to 15), —CONH—, —CO—N(CH 3 )—, —NH—, —O—, -COO- or -((CH 2 ) a1 -A 1 ) m1 - (a1 is an integer of 1 to 15, A 1 represents an oxygen atom or -COO-, m1 is an integer of 1 to 2 When m1 is 2, a1 and A1 each independently have the above definition.).
- G 1 represents a divalent cyclic group selected from a phenylene group and a cyclohexylene group.
- Any hydrogen atom on the cyclic group is an alkyl group having 1 to 3 carbon atoms, an alkoxy group having 1 to 3 carbon atoms, a fluorine-containing alkyl group having 1 to 3 carbon atoms, or a fluorine-containing alkoxy group having 1 to 3 carbon atoms. Alternatively, it may be substituted with a fluorine atom.
- m is an integer of 1-4. When m is 2 or more, multiple X 1 and G 1 each independently have the above definition.
- R 1 is a fluorine atom, a fluorine atom-containing alkyl group having 1 to 10 carbon atoms, a fluorine atom-containing alkoxy group having 1 to 10 carbon atoms, an alkyl group having 3 to 10 carbon atoms, an alkoxy group having 3 to 10 carbon atoms, or carbon represents an alkoxyalkyl group of numbers 3 to 10;
- X 1 and R 1 have the same definitions as X 1 and R 1 in formula (S1) above.)
- aromatic diamine (d) examples include diamines represented by the following formulas (d-1) and (d-2). More preferred specific examples are the groups of formulas (d-1) to (d-1) to ( diamines represented by d-2), and cholestanyloxy-3,5-diaminobenzene, cholestanyloxy-3,5-diaminobenzene, cholestanyloxy-2,4-diaminobenzene, and 3,5-diaminobenzo diamines having a steroid skeleton such as cholestanyl acid, cholestenyl 3,5-diaminobenzoate, lanostanyl 3,5-diaminobenzoate and 3,6-bis(4-aminobenzoyloxy)cholestane.
- X and J have the same definitions as X and J of the aromatic diamine (d), including preferred embodiments. In the formula (d-2), two X and J may be the same may be different.
- diamines include the above aromatic diamine (d), p-phenylenediamine, the above carboxy group-containing diamine, 4,4'-diaminodiphenylmethane, 4,4'- Diaminobenzophenone, 2,2'-dimethyl-4,4'-diaminobiphenyl, 4,4'-diamino-2,2'-bis(trifluoromethyl)biphenyl, diamine having photo-orientation group, radical initiation function , a diamine having a terminal photopolymerizable group, a diamine having a group “—N(D)—”, and a diamine having the above specific nitrogen-containing structure are preferred.
- the amount of the other diamines used is preferably 10 to 90 mol%, more preferably 20 to 80 mol, based on the total diamine components used. %.
- the amount of the other diamine used is preferably 10 to 90 mol %, more preferably 20 to 80 mol %, based on the total diamine components used in the production of the polymer (P).
- the tetracarboxylic acid component to be reacted with the diamine component is not only tetracarboxylic dianhydride, but also tetracarboxylic acid, tetracarboxylic acid dihalide, tetracarboxylic acid dialkyl ester, or tetracarboxylic acid.
- tetracarboxylic dianhydrides such as carboxylic acid dialkyl ester dihalides can also be used.
- the tetracarboxylic dianhydride or derivative thereof includes an acyclic aliphatic tetracarboxylic dianhydride, an alicyclic tetracarboxylic dianhydride, an aromatic tetracarboxylic dianhydride, or derivatives thereof. .
- liquid crystal display element When a liquid crystal display element has a low voltage holding ratio (VHR), it may be difficult to apply a sufficient voltage to the liquid crystal molecules even if a voltage is applied.
- automotive applications such as car navigation systems and meter panels may be used or left in high-temperature environments for long periods of time.
- temperature differences occur between different parts in the same substrate during firing, and the liquid crystal alignment film in the part that is excessively heated will not release the liquid crystal. The ability to orient is deteriorated, and as a result, there may be a problem that the obtained liquid crystal display element partially causes display defects.
- the polyamic acid (P') is used.
- the tetracarboxylic acid component to be reacted with the diamine component is more preferably an acyclic aliphatic tetracarboxylic dianhydride, an alicyclic tetracarboxylic dianhydride, or a derivative thereof.
- a tetracarboxylic dianhydride having at least one partial structure selected from the group consisting of a cyclobutane ring structure, a cyclopentane ring structure and a cyclohexane ring structure, or a derivative thereof.
- the tetracarboxylic acid component that can be used in the synthesis of the polyamic acid (P′)
- the following tetracarboxylic dianhydrides or derivatives thereof hereinafter collectively referred to as specific tetracarboxylic acid derivatives
- the specific tetracarboxylic acid The derivative is preferably the following acyclic aliphatic tetracarboxylic dianhydride, alicyclic tetracarboxylic dianhydride or derivative thereof.
- the tetracarboxylic dianhydride derivative include the above-described tetracarboxylic dianhydride derivative, and the tetracarboxylic dianhydride or derivative thereof may be used alone, or two More than one species may be used in combination.
- Acyclic aliphatic tetracarboxylic dianhydrides such as 1,2,3,4-butanetetracarboxylic dianhydride; 1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,2-dimethyl -1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,3-dimethyl-1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,3-dichloro-1,2,3 ,4-cyclobutanetetracarboxylic dianhydride, 1,2,3,4-tetramethyl-1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,3-difluoro-1,2,3, 4-cyclobutanetetracarboxylic dianhydride, 1,3-bis(trifluoromethyl)-1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,2,3,4-cyclopentanetetracar
- Preferred examples of the above specific tetracarboxylic acid derivatives include 1,2,3,4-butanetetracarboxylic dianhydride, 1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,2-dimethyl -1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,3-dimethyl-1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,2,3,4-tetramethyl- 1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,3-difluoro-1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,3-bis(trifluoromethyl)-1 , 2,3,4-cyclobutanetetracarboxylic dianhydride, 1,2,3,4-cyclopentanetetracarboxylic dianhydride, 1,2,4,5-cyclohexanetetracarboxylic dianhydride, 3, 3
- the proportion of the above-mentioned specific tetracarboxylic acid derivative used is preferably 10 mol% or more, more preferably 20 mol% or more, and even more preferably 50 mol% or more, relative to 1 mol of the total tetracarboxylic acid component used.
- a polyamic acid is synthesized by reacting a diamine component containing the specific diamine with a tetracarboxylic acid component containing the tetracarboxylic dianhydride or its derivative in an organic solvent.
- the ratio of the tetracarboxylic dianhydride and the diamine used in the synthesis reaction of the polyamic acid is such that the acid anhydride group of the tetracarboxylic dianhydride is 0.2 to 2 per equivalent of the amino group of the diamine.
- a ratio that provides equivalents is preferred, and a ratio that provides 0.3 to 1.2 equivalents is more preferred.
- the reaction temperature in the polyamic acid synthesis reaction is preferably -20 to 150°C, more preferably 0 to 100°C.
- the reaction time is preferably 0.1 to 24 hours, more preferably 0.5 to 12 hours.
- the polyamic acid synthesis reaction can be carried out at any concentration, preferably 1 to 50% by mass, more preferably 5 to 30% by mass.
- the initial stage of the reaction can be carried out at a high concentration, and then the solvent can be added.
- organic solvent examples include cyclohexanone, cyclopentanone, N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, ⁇ -butyrolactone, N,N-dimethylformamide, N,N-dimethylacetamide, dimethyl sulfoxide, 1,3-dimethyl-2-imidazolidinone.
- methyl ethyl ketone, cyclohexanone, cyclopentanone, 4-hydroxy-4-methyl-2-pentanone, propylene glycol monomethyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene Glycol monopropyl ether, diethylene glycol monomethyl ether, or diethylene glycol monoethyl ether can be used
- Polyamic acid esters are produced by, for example, [I] a method of reacting the polyamic acid obtained by the above method with an esterifying agent, [II] a method of reacting a tetracarboxylic acid diester with a diamine, [III] a tetracarboxylic acid It can be obtained by a known method such as a method of reacting a diester dihalide and a diamine.
- a polyimide can be obtained by ring-closing (imidating) a polyimide precursor such as the above polyamic acid or polyamic acid ester.
- the imidization ratio as used herein means the ratio of imide groups to the total amount of imide groups derived from tetracarboxylic dianhydride or derivatives thereof and carboxy groups (or derivatives thereof).
- the imidization rate does not necessarily have to be 100%, and can be arbitrarily adjusted according to the application and purpose.
- Examples of methods for imidizing the polyimide precursor include thermal imidization in which the solution of the polyimide precursor is heated as it is, and catalytic imidization in which a catalyst is added to the solution of the polyimide precursor.
- the temperature is preferably 100 to 400° C., more preferably 120 to 250° C., and water produced by the imidization reaction is removed from the system. is preferred.
- the catalytic imidization of the polyimide precursor can be carried out by adding a basic catalyst and an acid anhydride to the solution of the polyimide precursor and stirring at -20 to 250°C, preferably 0 to 180°C.
- the amount of the basic catalyst is 0.5 to 30 times the molar amount of the amic acid group, preferably 2 to 20 times the molar amount, and the amount of the acid anhydride is 1 to 50 times the molar amount of the amic acid group, preferably 3 to 30 times the molar amount.
- the basic catalyst include pyridine, triethylamine, trimethylamine, tributylamine, trioctylamine, etc. Among them, pyridine is preferable because it has appropriate basicity for advancing the reaction.
- Examples of the acid anhydride include acetic anhydride, trimellitic anhydride, and pyromellitic anhydride. Among them, acetic anhydride is preferably used because it facilitates purification after the reaction is completed.
- the imidization rate by catalytic imidization can be controlled by adjusting the catalyst amount, reaction temperature, and reaction time.
- the reaction solution may be put into a solvent to precipitate.
- Solvents used for precipitation include methanol, ethanol, isopropyl alcohol, acetone, hexane, butyl cellosolve, heptane, methyl ethyl ketone, methyl isobutyl ketone, toluene, benzene, and water.
- the polymer precipitated by adding it to the solvent can be filtered and recovered, and then dried at room temperature or under heat under normal pressure or reduced pressure.
- the impurities in the polymer can be reduced by redissolving the precipitated and recovered polymer in an organic solvent and repeating the operation of reprecipitating and recovering 2 to 10 times.
- Solvents in this case include, for example, alcohols, ketones, hydrocarbons, and the like, and it is preferable to use three or more kinds of solvents selected from these, because the purification efficiency is further improved.
- a tetracarboxylic acid component containing a tetracarboxylic acid dianhydride or a derivative thereof, and a diamine component containing the specific diamine, together with an appropriate terminal blocking agent end-blocking A stop-type polymer may be synthesized.
- the end-blocking polymer has effects of improving the film hardness of the alignment film obtained by the coating film and improving the adhesion properties between the sealant and the alignment film.
- the terminal of the polyimide precursor or polyimide in the present invention include an amino group, a carboxyl group, an acid anhydride group, or a group derived from a terminal blocking agent to be described later.
- An amino group, a carboxyl group, and an acid anhydride group can be obtained by a normal condensation reaction, or can be obtained by terminal blocking using the following terminal blocking agents.
- Terminal blockers include, for example, acetic anhydride, maleic anhydride, nadic anhydride, phthalic anhydride, itaconic anhydride, cyclohexanedicarboxylic anhydride, 3-hydroxyphthalic anhydride, trimellitic anhydride, 3-( 3-trimethoxysilyl)propyl)-3,4-dihydrofuran-2,5-dione, 4,5,6,7-tetrafluoroisobenzofuran-1,3-dione, 4-ethynylphthalic anhydride, etc.
- Acid anhydrides dicarbonic acid diester compounds such as di-tert-butyl dicarbonate and diallyl dicarbonate; chlorocarbonyl compounds such as acryloyl chloride, methacryloyl chloride and nicotinic acid chloride; aniline, 2-aminophenol, 3-aminophenol, 4 -aminosalicylic acid, 5-aminosalicylic acid, 6-aminosalicylic acid, 2-aminobenzoic acid, 3-aminobenzoic acid, 4-aminobenzoic acid, cyclohexylamine, n-butylamine, n-pentylamine, n-hexylamine, n - monoamine compounds such as heptylamine and n-octylamine; ethyl isocyanate, phenyl isocyanate, naphthyl isocyanate, or having unsaturated bonds such as 2-acryloyloxyethyl isocyanate and 2-methacryloy
- the proportion of the end blocking agent used is preferably 0.01 to 20 mol parts, more preferably 0.01 to 10 mol parts, per 100 mol parts in total of the diamine components used.
- the polystyrene equivalent weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) of the polyimide precursor and polyimide is preferably 1,000 to 500,000, more preferably 2,000 to 300,000. is.
- the molecular weight distribution (Mw/Mn) represented by the ratio of Mw to the polystyrene equivalent number average molecular weight (Mn) measured by GPC is preferably 15 or less, more preferably 10 or less.
- the liquid crystal aligning agent of the present invention is a liquid composition in which the polymer (P) and optionally other components are preferably dispersed or dissolved in a suitable solvent.
- the liquid crystal aligning agent of the present invention may contain other polymers other than the polymer (P).
- other polymers include at least one polymer selected from the group consisting of a polyimide precursor obtained using a diamine component that does not contain the specific diamine and a polyimide that is an imidized product of the polyimide precursor.
- polysiloxane polysiloxane, polyester, polyamide, polyurea, polyorganosiloxane, cellulose derivative, polyacetal, polystyrene derivative, poly(styrene-maleic anhydride) copolymer, poly(isobutylene-maleic anhydride) copolymer , poly(vinyl ether-maleic anhydride) copolymer, poly(styrene-phenylmaleimide) derivative, poly(meth)acrylate, and the like.
- the polymer (B) is selected from the group consisting of a polyimide precursor obtained using a diamine component containing the aromatic diamine (d) and an imidized product of the polyimide precursor, from the viewpoint of improving vertical alignment.
- At least one polymer is included.
- poly(styrene-maleic anhydride) copolymers include SMA1000, SMA2000, SMA3000 (manufactured by Cray Valley), GSM301 (manufactured by Gifu Shellac Manufacturing Co., Ltd.) and the like.
- Anhydride) copolymers include Isoban-600 (manufactured by Kuraray Co., Ltd.), and specific examples of poly(vinyl ether-maleic anhydride) copolymers include Gantrez AN-139 (methyl vinyl ether anhydride). maleic acid resin, manufactured by Ashland).
- Other polymers may be used singly or in combination of two or more.
- the content of the other polymer is preferably 90 parts by mass or less, more preferably 10 to 90 parts by mass, and further 20 to 80 parts by mass with respect to the total 100 parts by mass of the polymer contained in the liquid crystal aligning agent. preferable.
- the liquid crystal aligning agent of the present invention may contain components other than those mentioned above, if necessary.
- the component include a crosslinkable compound (c-1) having at least one substituent selected from an epoxy group, an isocyanate group, an oxetane group, a cyclocarbonate group, a blocked isocyanate group, a hydroxy group and an alkoxy group, and , at least one crosslinkable compound selected from the group consisting of a crosslinkable compound (c-2) having a polymerizable unsaturated group, a functional silane compound, a metal chelate compound, a curing accelerator, a surfactant, an antioxidant , sensitizers, preservatives, and compounds for adjusting the dielectric constant and electrical resistance of the liquid crystal alignment film.
- a crosslinkable compound (c-1) having at least one substituent selected from an epoxy group, an isocyanate group, an oxetane group, a cyclocarbonate group, a blocked isocyanate group
- crosslinkable compounds (c-1) and (c-2) include N,N,N',N'-tetraglycidyl-1,4-phenylenediamine, N,N,N',N' -tetraglycidyl-2,2'-dimethyl-4.4'-diaminobiphenyl, 2,2-bis[4-(N,N-diglycidyl-4-aminophenoxy)phenyl]propane, N,N,N', Epoxy compounds in which a tertiary nitrogen atom is bound to an aromatic carbon atom such as N'-tetraglycidyl-4,4'-diaminodiphenylmethane; N,N,N',N'-tetraglycidyl-1,2-diaminocyclohexane , N,N,N′,N′-tetraglycidyl-1,3-diaminocyclohexane, N,N,N′,N′-
- Epoxy compounds in which the tertiary nitrogen atom is bound to an aliphatic carbon atom epoxy compounds such as triglycidyl isocyanurate such as TEPIC (manufactured by Nissan Chemical Co., Ltd.); Compounds having two or more oxetanyl groups described; Coronate AP Stable M, Coronate 2503, 2515, 2507, 2513, 2555, Millionate MS-50 (manufactured by Tosoh Corporation), Takenate B-830, B-815N, Compounds having blocked isocyanate groups such as B-820NSU, B-842N, B-846N, B-870N, B-874N, B-882N (manufactured by Mitsui Chemicals, Inc.); N,N,N',N'- Tetrakis(2-hydroxyethyl)adipamide, 2,2-bis(4-hydroxy-3,5-dihydroxymethylphenyl)propane, 2,2-bis(4-hydroxy-3,5-dime
- the content of the crosslinkable compound is preferably 0.01 to 30 parts by mass, more preferably 0.1 to 20 parts by mass, and still more preferably 100 parts by mass of the polymer component contained in the liquid crystal alignment agent. 1 to 20 parts by mass.
- Compounds for adjusting the dielectric constant and electrical resistance include monoamines having nitrogen-containing aromatic heterocycles such as 3-picolylamine.
- a monoamine having a nitrogen-containing aromatic heterocycle it is preferably 0.1 to 30 parts by mass, more preferably 0.1 to 100 parts by mass relative to 100 parts by mass of the polymer component contained in the liquid crystal aligning agent. 20 parts by mass.
- Preferred specific examples of functional silane compounds include 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-aminopropyldiethoxymethylsilane, 2-aminopropyltrimethoxysilane, 2-aminopropyltriethoxysilane.
- Silane N-(2-aminoethyl)-3-aminopropyltrimethoxysilane, N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane, 3-ureidopropyltrimethoxysilane, 3-ureidopropyltriethoxy silane, vinyltrimethoxysilane, vinyltriethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxysilane sidoxypropylmethyldiethoxysilane, 3-glycidoxypropyltriethoxysilane, p-styryltrimethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropyltrimethoxysilane,
- organic solvent used in the liquid crystal aligning agent of the present invention examples include lactone solvents such as ⁇ -valerolactone and ⁇ -butyrolactone; (n-propyl)-2-pyrrolidone, N-isopropyl-2-pyrrolidone, N-(n-butyl)-2-pyrrolidone, N-(tert-butyl)-2-pyrrolidone, N-(n-pentyl)- lactam solvents such as 2-pyrrolidone, N-methoxypropyl-2-pyrrolidone, N-ethoxyethyl-2-pyrrolidone, N-methoxybutyl-2-pyrrolidone, N-cyclohexyl-2-pyrrolidone; N,N-dimethylformamide, N,N-diethylformamide, N,N-dimethylacetamide, N,N-dimethylpropionamide, N,N-diethylpropionamide, N,N,
- Preferred solvent combinations include N-methyl-2-pyrrolidone and ethylene glycol monobutyl ether, N-methyl-2-pyrrolidone, ⁇ -butyrolactone and ethylene glycol monobutyl ether, N-methyl-2-pyrrolidone, ⁇ -butyrolactone and propylene.
- the solid content concentration in the liquid crystal aligning agent (ratio of the total mass of components other than the solvent of the liquid crystal aligning agent to the total mass of the liquid crystal aligning agent) is appropriately selected in consideration of viscosity, volatility, etc., but preferably It is in the range of 1 to 10% by mass. From the viewpoint of forming a uniform and defect-free coating film, it is preferably 1% by mass or more, and from the viewpoint of storage stability of the solution, it is preferably 10% by mass or less. A particularly preferred polymer concentration is 2 to 8% by weight.
- the liquid crystal alignment film of the present invention is obtained from the above liquid crystal alignment agent.
- the liquid crystal alignment film of the present invention can be used for horizontal alignment type (TN system, STN system, IPS system, FFS system, etc.) or vertical alignment type liquid crystal alignment film.
- a liquid crystal alignment film used for a vertically aligned liquid crystal display element such as a VA system or a PSA (Polymer Sustained Alignment) system is preferable.
- the liquid crystal display element of the present invention comprises the liquid crystal alignment film.
- the liquid crystal aligning agent of the present invention has a liquid crystal layer between a pair of substrates provided with electrodes, and a liquid crystal composition containing a polymerizable compound polymerized by at least one of active energy rays and heat between the pair of substrates. It is also preferably used for a liquid crystal display element manufactured through a process of polymerizing a polymerizable compound by at least one of irradiation with an active energy ray and heating while placing a substance and applying a voltage between electrodes.
- the liquid crystal display device of the present invention can be manufactured, for example, by performing the following steps (1) to (3) or steps (1) to (4) in this order.
- the liquid crystal aligning agent of the present invention is coated on one surface of the substrate by an appropriate coating method such as a roll coater method, a spin coat method, a printing method, an ink jet method, or the like to prepare a coating film.
- the substrate is not particularly limited as long as it is highly transparent, and in addition to a glass substrate and a silicon nitride substrate, a plastic substrate such as an acrylic substrate or a polycarbonate substrate can also be used.
- a plastic substrate such as an acrylic substrate or a polycarbonate substrate
- an opaque material such as a silicon wafer can be used, and in this case, a light-reflecting material such as aluminum can be used for the electrodes.
- a substrate provided with electrodes made of a transparent conductive film or a metal film patterned in a comb shape and a counter substrate provided with no electrodes are used. may be used to form a coating film on one surface of at least one of the substrates.
- the coating film is baked for the purpose of preventing dripping of the applied aligning agent.
- preheating is performed first.
- the prebaking temperature is preferably 30 to 200°C, more preferably 40 to 150°C, and particularly preferably 40 to 100°C.
- the pre-baking time is preferably 0.25-10 minutes, more preferably 0.5-5 minutes.
- a heating (post-baking) step is preferably performed.
- the post-bake temperature is preferably 80-300°C, more preferably 120-250°C.
- the post-bake time is preferably 5-200 minutes, more preferably 10-100 minutes.
- the thickness of the film thus formed is preferably 5 to 300 nm, more preferably 10 to 200 nm.
- the coating film formed in the above steps (1) and (2) can be used as it is as a liquid crystal alignment film, but the coating film may be subjected to an alignment ability imparting treatment.
- Alignment imparting treatment includes rubbing treatment in which the coating film is rubbed in a fixed direction with a roll wrapped with a cloth made of fibers such as nylon, rayon, cotton, etc., and photo-alignment treatment in which the coating film is irradiated with polarized or non-polarized radiation. processing and the like.
- ultraviolet rays and visible rays including light with a wavelength of 150 to 800 nm can be used as the radiation to irradiate the coating film.
- the radiation When the radiation is polarized, it may be linearly polarized or partially polarized. Further, when the radiation used is linearly polarized or partially polarized, the irradiation may be performed from a direction perpendicular to the substrate surface, from an oblique direction, or a combination thereof. When non-polarized radiation is applied, the direction of irradiation is oblique.
- Step of forming a liquid crystal layer between the pair of substrates to produce a liquid crystal cell (3-1) When manufacturing a VA liquid crystal display element Two substrates having the liquid crystal alignment film of the present invention formed on at least one of them are prepared, and a liquid crystal is arranged between the two substrates facing each other. Specifically, the following two methods are mentioned.
- the first method is a conventionally known method. First, two substrates are arranged to face each other with a gap (cell gap) interposed therebetween so that the respective liquid crystal alignment films face each other.
- a sealant is applied to the periphery of the two substrates and attached to each other, and a liquid crystal composition is injected and filled into the cell gap defined by the substrate surface and the sealant to contact the film surface, and then the injection hole is opened. Seal.
- the second method is a method called ODF (One Drop Fill) method.
- ODF One Drop Fill
- a predetermined place on one of the two substrates on which the liquid crystal alignment film is formed is coated with, for example, an ultraviolet light-curing sealant, and a liquid crystal composition is applied to several predetermined places on the surface of the liquid crystal alignment film. drip.
- the other substrate is attached so that the liquid crystal alignment films face each other, and the liquid crystal composition is spread over the entire surface of the substrate and brought into contact with the film surface.
- the entire surface of the substrate is irradiated with ultraviolet light to cure the sealant.
- it is desirable to remove the flow orientation at the time of liquid crystal filling by heating the liquid crystal composition to a temperature at which the used liquid crystal composition assumes an isotropic phase and then slowly cooling to room temperature.
- liquid crystal composition The liquid crystal composition is not particularly limited, and various liquid crystal compositions containing at least one liquid crystal compound (liquid crystal molecule) and having positive or negative dielectric anisotropy can be used.
- a liquid crystal composition with a positive dielectric anisotropy is also referred to as a positive liquid crystal
- a liquid crystal composition with a negative dielectric anisotropy is also referred to as a negative liquid crystal.
- the above liquid crystal composition contains a fluorine atom, a hydroxy group, an amino group, a fluorine atom-containing group (e.g., trifluoromethyl group), a cyano group, an alkyl group, an alkoxy group, an alkenyl group, an isothiocyanate group, a heterocyclic ring, a cycloalkane,
- a liquid crystal compound having a cycloalkene, a steroid skeleton, a benzene ring, or a naphthalene ring may be included, and a compound having two or more rigid sites (mesogenic skeleton) exhibiting liquid crystallinity in the molecule (for example, two rigid biphenyl structures or terphenyl structures linked by alkyl groups).
- the liquid crystal composition may be a liquid crystal composition exhibiting a nematic phase, a liquid crystal composition exhibiting a smectic phase, or a liquid crystal composition exhibiting a cholesteric phase.
- the liquid crystal composition may further contain an additive from the viewpoint of improving liquid crystal orientation.
- additives include photopolymerizable monomers such as compounds having a polymerizable group; optically active compounds (eg, S-811 manufactured by Merck Co., Ltd.); antioxidants; UV absorbers; dyes; antifoaming agents; polymerization initiators; or polymerization inhibitors.
- Positive liquid crystals include ZLI-2293, ZLI-4792, MLC-2003, MLC-2041, and MLC-7081 manufactured by Merck.
- Negative liquid crystals include, for example, MLC-6608, MLC-6609, MLC-6610, and MLC-7026-100 manufactured by Merck.
- MLC-6608, MLC-6609, MLC-6610, and MLC-7026-100 manufactured by Merck.
- MLC-3023 manufactured by Merck & Co., Ltd. can be mentioned.
- the mesogenic structure includes a structure in which two or more aromatic groups or aliphatic groups are linked, such as a biphenyl structure, a terphenyl structure, a naphthalene ring, a group obtained by removing two hydroxy groups from bisphenol A, or any of these A fluorine atom-containing structure in which a part of the hydrogen atoms of the structure are replaced with fluorine atoms can be mentioned.
- Specific compounds include 4,4'-dimethacryloxybiphenyl or 3-fluoro-1,1'-biphenyl-4,4'-diyl dimethacrylate.
- the compound having a polymerizable group may be a compound having the polymerizable group described above, and the content thereof is preferably 0.1 to 30 parts by mass with respect to 100 parts by mass of all polymer components. , more preferably 1 to 20 parts by mass.
- the polymerizable group may be present in the polymer used for the liquid crystal alignment agent, and such a polymer includes, for example, a diamine component containing a diamine having a photopolymerizable group at the end thereof, which is used in the reaction.
- a diamine component containing a diamine having a photopolymerizable group at the end thereof which is used in the reaction.
- the polymer obtained is mentioned.
- Step of irradiating the liquid crystal cell with light The liquid crystal cell is irradiated with light while a voltage is applied between the conductive films of the pair of substrates obtained in (3-2) or (3-3) above.
- the voltage applied here can be, for example, 5 to 50 V direct current or alternating current.
- As the light for irradiation for example, ultraviolet light containing light with a wavelength of 150 to 800 nm and visible light can be used, but ultraviolet light containing light with a wavelength of 300 to 400 nm is preferable.
- a low-pressure mercury lamp, a high-pressure mercury lamp, a deuterium lamp, a metal halide lamp, an argon resonance lamp, a xenon lamp, an excimer laser, or the like can be used as the light source for the irradiation light.
- the irradiation amount of light is preferably 1,000 to 200,000 J/m 2 , more preferably 1,000 to 100,000 J/m 2 .
- a liquid crystal display element can be obtained by bonding a polarizing plate to the outer surface of the liquid crystal cell.
- a polarizing plate As the polarizing plate to be attached to the outer surface of the liquid crystal cell, a polarizing film called "H film” in which polyvinyl alcohol is stretched and oriented while absorbing iodine is sandwiched between cellulose acetate protective films, or the H film itself.
- a polarizing plate consisting of
- the liquid crystal display device of the present invention can be effectively applied to various devices such as watches, portable games, word processors, notebook computers, car navigation systems, camcorders, PDAs, digital cameras, mobile phones, smart phones, It can be used for various display devices such as various monitors, liquid crystal televisions, and information displays.
- the polymer composition contained in the liquid crystal aligning agent is a liquid crystal alignment film for a retardation film, a liquid crystal alignment film for a scanning antenna or a liquid crystal array antenna, or a liquid crystal alignment film for a transmission scattering type liquid crystal light control element, Alternatively, it can also be used for applications other than these, such as protective films for color filters, gate insulating films for flexible displays, and substrate materials.
- DA-1-1 (14.0 g, 50.7 mmol), potassium carbonate (12.4 g, 90.0 mmol), hydroquinone (90.6 g, 823 mmol), and ethanol (362 g) were added to a 1 L four-necked flask. , and 45° C. for 5 hours. After the reaction, the reaction solution and water (1200 g) were added to a 2 L beaker to precipitate crude DA-1-2. The precipitate was collected by filtration and vacuum-dried at 50° C. Methanol (350 g) and ethanol (190 g) were added to the crude DA-1-2 and heated to 60° C. to dissolve.
- DA-1-2 (9.98 g, 34.4 mmol), THF (120 g), and carbon-supported platinum (supported amount 3% by mass, 0.500 g) were added, at room temperature under a hydrogen atmosphere. reacted. After completion of the reaction, carbon-supported platinum was removed by filtration, and the resulting filtrate was concentrated and the precipitated crystals were vacuum-dried at 50° C. to obtain DA-1 (yield: 7.71 g, 33.5 mmol, yield: 97 .4%, orange solid). From the 1 H-NMR results shown below, this solid was confirmed to be DA-1.
- the reaction solution was diluted with ethyl acetate (1350 g), and the organic phase was washed with pure water (720 g). Subsequently, the organic phase was washed twice with a 2.0 mol/L hydrochloric acid aqueous solution (720 g) and three times with pure water (720 g). The resulting organic phase was concentrated under reduced pressure to obtain a pale yellow oily crude product. Ethanol (400 g) and pure water (274 g) were added to the resulting crude product, sodium hydroxide (21.8 g) was added, and the mixture was reacted at room temperature for 20 hours for hydrolysis.
- DA-2 (1.10 g, 4.00 mmol), DA-3 (1.08 g, 10.00 mmol), DA-4 (2.28 g, 6.00 mmol), CA-1 (2.50 g, 10.00 mmol) and NMP (27.8 g) were added and stirred at 60° C. for 3 hours while purging with nitrogen. Then, CA-2 (1.93 g, 9.86 mmol) and NMP (7.73 g) were added and stirred at 40° C. for 3 hours to give a polyamic acid solution (2) with a solid content concentration of 20% by mass (viscosity : 710 mPa ⁇ s) was obtained. This polyamic acid had an Mn of 10,800 and an Mw of 34,800.
- DA-2 (1.65 g, 6.00 mmol), DA-3 (0.973 g, 9.00 mmol), CA-2 (2.91 g, 14.8 mmol) and NMP (31.3 g) were added and stirred at 40° C. for 3 hours to obtain a polyamic acid solution (4) with a solid concentration of 15% by mass (viscosity: 520 mPa ⁇ s).
- This polyamic acid had an Mn of 14,500 and an Mw of 32,900.
- DA-1 (0.691 g, 3.00 mmol), DA-3 (0.811 g, 7.50 mmol), DA-4 (1.71 g, 4.50 mmol), CA-2 (2.90 g, 14.8 mmol) and NMP (24.5 g) were added and stirred at 40° C. for 3 hours to obtain a polyamic acid solution with a solid concentration of 20% by mass ( 5) (Viscosity: 680 mPa ⁇ s) was obtained.
- This polyamic acid had an Mn of 11,100 and an Mw of 25,600.
- DA-2 (0.822 g, 3.00 mmol), DA-3 (0.811 g, 7.50 mmol), DA-4 (1.71 g, 4.50 mmol), CA-2 (2.89 g, 14.8 mmol) and NMP (25.0 g) were added and stirred at 40 ° C. for 3 hours to obtain a polyamic acid solution with a solid content concentration of 20% by mass.
- (6) (viscosity: 640 mPa ⁇ s) was obtained.
- This polyamic acid had an Mn of 13,400 and an Mw of 32,000.
- DA-1 (0.691 g, 3.00 mmol), DA-3 (0.811 g, 7.50 mmol), DA-4 (1.71 g, 4.50 mmol), CA-3 (3.23 g, 14.8 mmol) and NMP (25.8 g) were added and stirred at room temperature for 3 hours to obtain a polyamic acid solution with a solid concentration of 20% by mass ( 7) (Viscosity: 670 mPa ⁇ s) was obtained.
- This polyamic acid had an Mn of 14,300 and an Mw of 30,900.
- DA-2 (0.823 g, 3.00 mmol), DA-3 (0.811 g, 7.50 mmol), DA-4 (1.71 g, 4.50 mmol), CA-3 (3.21 g, 14.8 mmol) and NMP (26.2 g) were added and stirred at room temperature for 3 hours to obtain a polyamic acid solution with a solid concentration of 20% by mass ( 8) (Viscosity: 720 mPa ⁇ s) was obtained.
- This polyamic acid had an Mn of 15,300 and an Mw of 32,600.
- DA-5 (0.553 g, 4.00 mmol), DA-3 (1.08 g, 10.0 mmol), DA-4 (2.28 g, 6.00 mmol), CA-1 (2.50 g, 10.0 mmol) and NMP (25.7 g) were added and stirred at 60° C. for 3 hours while purging with nitrogen. Then, CA-2 (1.91 g, 9.76 mmol) and NMP (7.66 g) were added and stirred at 40° C. for 3 hours to give a polyamic acid solution (9) with a solid content concentration of 20% by mass (viscosity : 760 mPa ⁇ s) was obtained. This polyamic acid had an Mn of 11,300 and an Mw of 25,880.
- DA-5 (0.829 g, 6.00 mmol), DA-3 (0.973 g, 9.00 mmol), CA-2 (2.90 g, 14.8 mmol) and NMP (26.7 g) were added and stirred at 40° C. for 3 hours to obtain a polyamic acid solution (11) with a solid concentration of 15% by mass (viscosity: 460 mPa ⁇ s).
- This polyamic acid had an Mn of 15,200 and an Mw of 23,800.
- DA-3 (1.62 g, 15.0 mmol), CA-2 (2.90 g, 14.8 mmol) and NMP (25.6 g) were added to a 50 mL four-necked flask equipped with a stirrer and nitrogen inlet tube. Then, the mixture was stirred at 40° C. for 3 hours to obtain a polyamic acid solution (12) (viscosity: 520 mPa ⁇ s) with a solid concentration of 15% by mass. This polyamic acid had an Mn of 10,600 and an Mw of 41,000.
- Table 1 below shows the specifications of the monomer components used in the above examples and comparative examples.
- Example 3-1 [Preparation of Liquid Crystal Aligning Agent] ⁇ Example 3-1> NMP (8.00 g) and BCS (8.00 g) were added to the polyamic acid solution (1) (4.00 g) obtained in Example 2-1 and stirred at room temperature for 3 hours to obtain a liquid crystal aligning agent. (A-1) was obtained.
- Examples 3-2, 3-5 to 3-8 Comparative Examples 3-1, 3-2> Examples 3-2, 3-5 to 3-2 were prepared in the same manner as in Example 3-1 except that the polyamic acid solutions (2) and (5) to (10) were used instead of the polyamic acid solution (1). 3-8, Comparative Examples 3-1 and 3-2 liquid crystal aligning agents (A-2), (A-5) to (A-8), (B-1) and (B-2) were obtained.
- Example 3-3 NMP (5.00 g) and BCS (6.00 g) were added to the polyamic acid solution (3) (4.00 g) obtained in Example 2-3 and stirred at room temperature for 3 hours to obtain a liquid crystal aligning agent. (A-3) was obtained.
- Example 3-4 Comparative Examples 3-3, 3-4> Example 3-4, Comparative Example 3- Liquid crystal aligning agents (A-4), (B-3) and (B-4) of 3 and 3-4 were obtained. Specifications of the liquid crystal aligning agents obtained in the above Examples and Comparative Examples are shown in Table 2 below.
- liquid crystal aligning agents (A-1) to (A-8) and (B-1) to (B-4) obtained as described above no abnormality such as turbidity or precipitation was observed, and the solution was uniform. One thing has been confirmed.
- rubbing resistance, seal adhesion, voltage holding ratio and vertical alignment were evaluated.
- the liquid crystal aligning agents (A-1) to (A-8) and (B-1) to (B-4) obtained above were spin-coated onto the ITO surface of a glass substrate having an ITO electrode over the entire surface. and dried on a hot plate at 70° C. for 90 seconds. After that, it was baked in an infrared heating furnace at 230° C. for 30 minutes to form a coating film having a thickness of 100 nm, thereby obtaining a substrate with a liquid crystal alignment film.
- This liquid crystal alignment film was rubbed with a rayon cloth (YA-20R manufactured by Yoshikawa Kako Co., Ltd.) (roller diameter: 120 mm, roller rotation speed: 1000 rpm, moving speed: 20 mm/sec, pushing length: 0.6 mm).
- the substrate was observed with a microscope, and evaluation was performed by defining "good” when streaks due to rubbing were not observed on the film surface and "bad” when streaks were observed. The results are shown in Table 3 below.
- liquid crystal aligning agents (A-1) to (A-8) and (B-1) to (B-4) obtained above are combined into a rectangular transparent electrode-attached glass having a length of 30 mm, a width of 40 mm, and a thickness of 1.1 mm.
- Each substrate was spin-coated, dried on a hot plate at 70° C. for 90 seconds, and then baked in a hot air circulating oven at 230° C. for 20 minutes to form a liquid crystal alignment film with a thickness of 100 nm.
- Two substrates thus obtained were prepared, and a bead spacer with a diameter of 4 ⁇ m was applied on the liquid crystal alignment film surface of one of the substrates, and then a sealant (723K1 manufactured by Kyoritsu Chemical Industry Co., Ltd.) was applied. Then, these substrates were bonded together so that the liquid crystal alignment film surfaces of the substrates faced each other and the overlapping width of the substrates was 1 cm. At that time, the dropping amount of the sealant was adjusted so that the diameter of the sealant after bonding was 3 mm. After fixing the two laminated substrates with a clip, they were irradiated with ultraviolet rays of 4 J/cm 2 in terms of wavelength of 365 nm, and thermally cured at 120° C. for 1 hour to prepare a sample for adhesion evaluation.
- a sealant 723K1 manufactured by Kyoritsu Chemical Industry Co., Ltd.
- Adhesion was evaluated using a desktop precision universal tester (AGS-X 500N manufactured by Shimadzu Corporation). After the edges of the upper and lower substrates of the obtained evaluation sample were fixed, the substrates were pushed in from the upper central portion, and the peeling strength (N) was measured. Then, the seal adhesion (N/mm) was evaluated using a value obtained by normalizing the pressure (N) with the measured diameter (mm) of the sealant. The results are shown in Table 3 below. The peeling strength and the measured diameter of the sealant were as follows.
- Example 3-1 strength: 16.6 N, diameter: 3.3 mm ⁇ Example 3-2: strength: 15.4 N, diameter: 3.1 mm ⁇ Example 3-3: strength: 15.9 N, diameter: 3.2 mm ⁇ Example 3-4: Strength: 16.6 N, diameter: 3.3 mm ⁇ Example 3-5: strength: 14.9 N, diameter: 2.9 mm ⁇ Example 3-6: strength: 15.4 N, diameter: 3.1 mm ⁇ Example 3-7: Strength: 16.4 N, diameter: 3.3 mm ⁇ Example 3-8: strength: 15.6 N, diameter: 3.1 mm ⁇ Comparative Example 3-1: Strength: 12.0 N, Diameter: 3.1 mm ⁇ Comparative Example 3-2: Strength: 8.6 N, Diameter: 3.2 mm ⁇ Comparative Example 3-3: Strength: 13.0 N, Diameter: 3.1 mm ⁇ Comparative Example 3-4: Strength: 11.5 N, Diameter: 3.8 mm
- liquid crystal cells were produced in the following procedure.
- a liquid crystal aligning agent was spin-coated on a glass substrate with ITO electrodes, dried on a hot plate at 70° C. for 90 seconds, and then baked in an infrared heating furnace at 230° C. for 20 minutes to form a liquid crystal alignment film having a thickness of 100 nm. .
- Two substrates with this liquid crystal alignment film are prepared, and a bead spacer with a diameter of 4 ⁇ m (manufactured by Nikki Shokubai Kasei Co., Ltd., Shinshikyu, SW-D1) is applied on one of the liquid crystal alignment films, and a thermosetting sealant ( XN-1500T manufactured by Mitsui Chemicals, Inc.) was printed.
- a thermosetting sealant XN-1500T manufactured by Mitsui Chemicals, Inc.
- the surface of the other substrate on which the liquid crystal alignment film was formed was turned inside, and after bonding with the previous substrate, the sealant was cured to prepare an empty cell.
- Liquid crystal MLC-3023 (manufactured by Merck) was injected into this empty cell by a vacuum injection method to prepare a liquid crystal cell.
- liquid crystal aligning agents (A-5) to (A-8) obtained above a liquid crystal cell was produced in the following procedure.
- a liquid crystal aligning agent was spin-coated on the ITO surface of an ITO electrode substrate on which an ITO electrode pattern with a pixel size of 100 ⁇ m ⁇ 300 ⁇ m and a line/space of 5 ⁇ m was formed. C. for 20 minutes in an infrared heating furnace to form a liquid crystal alignment film with a thickness of 100 nm.
- a glass substrate with an ITO electrode was spin-coated, dried on a hot plate at 70° C. for 90 seconds, and then baked in an infrared heating furnace at 230° C.
- normal conditions conditions for forming the liquid crystal alignment film.
- a liquid crystal alignment film having a thickness of 100 nm was prepared in the same manner as the normal conditions except that the baking conditions for each of the above substrates were changed to 60 minutes in an infrared heating furnace at 230 ° C. as the severe conditions for evaluating the vertical alignment properties of the liquid crystal alignment film. formed.
- Two substrates with a liquid crystal alignment film prepared under normal conditions are prepared, and a bead spacer with a diameter of 4 ⁇ m (manufactured by Nikki Shokubai Kasei Co., Ltd., Shinshikyu, SW-D1) is applied on one of the liquid crystal alignment films, and heat cured.
- a flexible sealant (XN-1500T, manufactured by Mitsui Chemicals, Inc.) was printed.
- the surface of the other substrate on which the liquid crystal alignment film was formed was turned inside, and after bonding with the previous substrate, the sealant was cured to prepare an empty cell.
- Liquid crystal MLC-3023 (manufactured by Merck) was injected into this empty cell by a vacuum injection method to prepare a liquid crystal cell.
- the examples using the liquid crystal alignment film obtained from the liquid crystal alignment agent containing the specific diamine as the diamine component used the liquid crystal alignment film obtained from the liquid crystal alignment agent containing no specific diamine as the diamine component. It exhibited excellent rubbing resistance and high seal adhesion as compared with the comparative example.
- the liquid crystal alignment film obtained from the liquid crystal alignment agent using the alicyclic acid dianhydride as the tetracarboxylic acid component has a high voltage holding ratio and good verticality as compared with the case where the aromatic acid dianhydride is used. showed orientation.
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JP2011209505A (ja) * | 2010-03-30 | 2011-10-20 | Jnc Corp | 液晶配向剤、液晶配向膜および液晶表示素子 |
JP2016133675A (ja) * | 2015-01-20 | 2016-07-25 | Jsr株式会社 | 液晶配向剤、液晶配向膜及びその製造方法、液晶表示素子、並びに位相差フィルム及びその製造方法 |
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2022
- 2022-05-23 JP JP2023523460A patent/JPWO2022250007A1/ja active Pending
- 2022-05-23 CN CN202280038187.7A patent/CN117396803A/zh active Pending
- 2022-05-23 WO PCT/JP2022/021080 patent/WO2022250007A1/fr active Application Filing
- 2022-05-26 TW TW111119609A patent/TW202311506A/zh unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011209505A (ja) * | 2010-03-30 | 2011-10-20 | Jnc Corp | 液晶配向剤、液晶配向膜および液晶表示素子 |
JP2016133675A (ja) * | 2015-01-20 | 2016-07-25 | Jsr株式会社 | 液晶配向剤、液晶配向膜及びその製造方法、液晶表示素子、並びに位相差フィルム及びその製造方法 |
JP2020154185A (ja) * | 2019-03-21 | 2020-09-24 | Jsr株式会社 | 液晶配向剤、液晶配向膜及び液晶素子 |
CN110791833A (zh) * | 2019-11-26 | 2020-02-14 | 中国科学院长春应用化学研究所 | 一种聚酰亚胺纤维及其制备方法 |
Also Published As
Publication number | Publication date |
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CN117396803A (zh) | 2024-01-12 |
TW202311506A (zh) | 2023-03-16 |
JPWO2022250007A1 (fr) | 2022-12-01 |
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