CN117999501A - Polarizing film, image display device, and method for manufacturing polarizing film - Google Patents
Polarizing film, image display device, and method for manufacturing polarizing film Download PDFInfo
- Publication number
- CN117999501A CN117999501A CN202280063382.5A CN202280063382A CN117999501A CN 117999501 A CN117999501 A CN 117999501A CN 202280063382 A CN202280063382 A CN 202280063382A CN 117999501 A CN117999501 A CN 117999501A
- Authority
- CN
- China
- Prior art keywords
- polarizing film
- polymer
- monomer
- polarizing
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 40
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 229920000642 polymer Polymers 0.000 claims abstract description 126
- 229920005989 resin Polymers 0.000 claims abstract description 114
- 239000011347 resin Substances 0.000 claims abstract description 113
- 150000001875 compounds Chemical class 0.000 claims abstract description 46
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000011630 iodine Substances 0.000 claims abstract description 40
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 40
- SFHYNDMGZXWXBU-LIMNOBDPSA-N 6-amino-2-[[(e)-(3-formylphenyl)methylideneamino]carbamoylamino]-1,3-dioxobenzo[de]isoquinoline-5,8-disulfonic acid Chemical compound O=C1C(C2=3)=CC(S(O)(=O)=O)=CC=3C(N)=C(S(O)(=O)=O)C=C2C(=O)N1NC(=O)N\N=C\C1=CC=CC(C=O)=C1 SFHYNDMGZXWXBU-LIMNOBDPSA-N 0.000 claims abstract description 21
- 125000003700 epoxy group Chemical group 0.000 claims abstract description 19
- 125000003566 oxetanyl group Chemical group 0.000 claims abstract description 19
- 239000000178 monomer Substances 0.000 claims description 136
- 230000001681 protective effect Effects 0.000 claims description 106
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 43
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 30
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 29
- 239000001257 hydrogen Substances 0.000 claims description 20
- 229910052739 hydrogen Inorganic materials 0.000 claims description 20
- 239000000370 acceptor Substances 0.000 claims description 17
- 230000035699 permeability Effects 0.000 claims description 17
- 239000006185 dispersion Substances 0.000 claims description 15
- 239000002253 acid Substances 0.000 claims description 14
- 230000003993 interaction Effects 0.000 claims description 14
- 229920002284 Cellulose triacetate Polymers 0.000 claims description 12
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 claims description 12
- 125000003118 aryl group Chemical group 0.000 claims description 10
- 125000001931 aliphatic group Chemical group 0.000 claims description 9
- 230000000379 polymerizing effect Effects 0.000 claims description 5
- 238000003475 lamination Methods 0.000 claims description 4
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 239000010408 film Substances 0.000 description 323
- 239000010410 layer Substances 0.000 description 158
- 239000012790 adhesive layer Substances 0.000 description 75
- 238000002834 transmittance Methods 0.000 description 56
- -1 bisphenol a Chemical class 0.000 description 38
- 239000011248 coating agent Substances 0.000 description 36
- 238000000576 coating method Methods 0.000 description 36
- 230000008859 change Effects 0.000 description 29
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 28
- 239000011521 glass Substances 0.000 description 19
- 239000004593 Epoxy Substances 0.000 description 18
- 239000000853 adhesive Substances 0.000 description 18
- 230000001070 adhesive effect Effects 0.000 description 18
- 239000012298 atmosphere Substances 0.000 description 18
- 239000000758 substrate Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 14
- 230000004048 modification Effects 0.000 description 13
- 238000012986 modification Methods 0.000 description 13
- 239000007788 liquid Substances 0.000 description 12
- 239000000243 solution Substances 0.000 description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 9
- 229920001477 hydrophilic polymer Polymers 0.000 description 9
- 238000005259 measurement Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 229920000139 polyethylene terephthalate Polymers 0.000 description 7
- 239000005020 polyethylene terephthalate Substances 0.000 description 7
- FNYWFRSQRHGKJT-UHFFFAOYSA-N 3-ethyl-3-[(3-ethyloxetan-3-yl)methoxymethyl]oxetane Chemical compound C1OCC1(CC)COCC1(CC)COC1 FNYWFRSQRHGKJT-UHFFFAOYSA-N 0.000 description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 6
- 239000004327 boric acid Substances 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 6
- 125000000524 functional group Chemical group 0.000 description 6
- 238000000302 molecular modelling Methods 0.000 description 6
- AHHWIHXENZJRFG-UHFFFAOYSA-N oxetane Chemical compound C1COC1 AHHWIHXENZJRFG-UHFFFAOYSA-N 0.000 description 6
- 239000003505 polymerization initiator Substances 0.000 description 6
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 229920005992 thermoplastic resin Polymers 0.000 description 6
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 5
- 238000005336 cracking Methods 0.000 description 5
- 238000004043 dyeing Methods 0.000 description 5
- 239000003822 epoxy resin Substances 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- KUAUJXBLDYVELT-UHFFFAOYSA-N 2-[[2,2-dimethyl-3-(oxiran-2-ylmethoxy)propoxy]methyl]oxirane Chemical compound C1OC1COCC(C)(C)COCC1CO1 KUAUJXBLDYVELT-UHFFFAOYSA-N 0.000 description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical class CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 4
- 235000010724 Wisteria floribunda Nutrition 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 125000004429 atom Chemical group 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000003851 corona treatment Methods 0.000 description 4
- 230000001186 cumulative effect Effects 0.000 description 4
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical class C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 4
- 239000004843 novolac epoxy resin Substances 0.000 description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 4
- 230000010287 polarization Effects 0.000 description 4
- 229920000058 polyacrylate Polymers 0.000 description 4
- 239000004417 polycarbonate Substances 0.000 description 4
- 229920000515 polycarbonate Polymers 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 238000005381 potential energy Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- AOBIOSPNXBMOAT-UHFFFAOYSA-N 2-[2-(oxiran-2-ylmethoxy)ethoxymethyl]oxirane Chemical compound C1OC1COCCOCC1CO1 AOBIOSPNXBMOAT-UHFFFAOYSA-N 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 3
- 239000003522 acrylic cement Substances 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 3
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 229920006254 polymer film Polymers 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000011342 resin composition Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229960000834 vinyl ether Drugs 0.000 description 3
- UZKWTJUDCOPSNM-UHFFFAOYSA-N 1-ethenoxybutane Chemical compound CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 2
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 2
- BTJPUDCSZVCXFQ-UHFFFAOYSA-N 2,4-diethylthioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC(CC)=CC(CC)=C3SC2=C1 BTJPUDCSZVCXFQ-UHFFFAOYSA-N 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- HHRACYLRBOUBKM-UHFFFAOYSA-N 2-[(4-tert-butylphenoxy)methyl]oxirane Chemical compound C1=CC(C(C)(C)C)=CC=C1OCC1OC1 HHRACYLRBOUBKM-UHFFFAOYSA-N 0.000 description 2
- LWRBVKNFOYUCNP-UHFFFAOYSA-N 2-methyl-1-(4-methylsulfanylphenyl)-2-morpholin-4-ylpropan-1-one Chemical compound C1=CC(SC)=CC=C1C(=O)C(C)(C)N1CCOCC1 LWRBVKNFOYUCNP-UHFFFAOYSA-N 0.000 description 2
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical class C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 2
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical class C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- 229920001893 acrylonitrile styrene Polymers 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 239000002216 antistatic agent Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 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 2
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 125000004185 ester group Chemical group 0.000 description 2
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 2
- 125000001033 ether group Chemical group 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
- 125000005842 heteroatom Chemical group 0.000 description 2
- 125000000623 heterocyclic group Chemical group 0.000 description 2
- 229920001600 hydrophobic polymer Polymers 0.000 description 2
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012900 molecular simulation Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- UMRZSTCPUPJPOJ-KNVOCYPGSA-N norbornane Chemical group C1C[C@H]2CC[C@@H]1C2 UMRZSTCPUPJPOJ-KNVOCYPGSA-N 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 150000002921 oxetanes Chemical class 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- QQNLHOMPVNTETJ-UHFFFAOYSA-N spiro[fluorene-9,9'-xanthene] Chemical compound C12=CC=CC=C2OC2=CC=CC=C2C11C2=CC=CC=C2C2=CC=CC=C21 QQNLHOMPVNTETJ-UHFFFAOYSA-N 0.000 description 2
- DTGKSKDOIYIVQL-WEDXCCLWSA-N (+)-borneol Chemical group C1C[C@@]2(C)[C@@H](O)C[C@@H]1C2(C)C DTGKSKDOIYIVQL-WEDXCCLWSA-N 0.000 description 1
- ZPZIQAWPHXYJAX-UHFFFAOYSA-N (2,2-dimethyl-3-prop-2-enoyloxypropyl) 3-hydroxy-2,2-dimethylpropanoate Chemical compound C=CC(=O)OCC(C)(C)COC(=O)C(C)(C)CO ZPZIQAWPHXYJAX-UHFFFAOYSA-N 0.000 description 1
- HHQAGBQXOWLTLL-UHFFFAOYSA-N (2-hydroxy-3-phenoxypropyl) prop-2-enoate Chemical compound C=CC(=O)OCC(O)COC1=CC=CC=C1 HHQAGBQXOWLTLL-UHFFFAOYSA-N 0.000 description 1
- UNMJLQGKEDTEKJ-UHFFFAOYSA-N (3-ethyloxetan-3-yl)methanol Chemical compound CCC1(CO)COC1 UNMJLQGKEDTEKJ-UHFFFAOYSA-N 0.000 description 1
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- SKYXLDSRLNRAPS-UHFFFAOYSA-N 1,2,4-trifluoro-5-methoxybenzene Chemical compound COC1=CC(F)=C(F)C=C1F SKYXLDSRLNRAPS-UHFFFAOYSA-N 0.000 description 1
- CYIGRWUIQAVBFG-UHFFFAOYSA-N 1,2-bis(2-ethenoxyethoxy)ethane Chemical compound C=COCCOCCOCCOC=C CYIGRWUIQAVBFG-UHFFFAOYSA-N 0.000 description 1
- KATAXDCYPGGJNJ-UHFFFAOYSA-N 1,3-bis(oxiran-2-ylmethoxy)propan-2-ol Chemical compound C1OC1COCC(O)COCC1CO1 KATAXDCYPGGJNJ-UHFFFAOYSA-N 0.000 description 1
- UWFRVQVNYNPBEF-UHFFFAOYSA-N 1-(2,4-dimethylphenyl)propan-1-one Chemical compound CCC(=O)C1=CC=C(C)C=C1C UWFRVQVNYNPBEF-UHFFFAOYSA-N 0.000 description 1
- SLBOQBILGNEPEB-UHFFFAOYSA-N 1-chloroprop-2-enylbenzene Chemical compound C=CC(Cl)C1=CC=CC=C1 SLBOQBILGNEPEB-UHFFFAOYSA-N 0.000 description 1
- RQJCIXUNHZZFMB-UHFFFAOYSA-N 1-ethenoxy-2-(2-ethenoxypropoxy)propane Chemical compound C=COCC(C)OCC(C)OC=C RQJCIXUNHZZFMB-UHFFFAOYSA-N 0.000 description 1
- PEBJBOQKIXHSOE-UHFFFAOYSA-N 1-ethenoxy-4-methoxybenzene Chemical compound COC1=CC=C(OC=C)C=C1 PEBJBOQKIXHSOE-UHFFFAOYSA-N 0.000 description 1
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 1
- 125000001637 1-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C(*)=C([H])C([H])=C([H])C2=C1[H] 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- HDPLHDGYGLENEI-UHFFFAOYSA-N 2-[1-(oxiran-2-ylmethoxy)propan-2-yloxymethyl]oxirane Chemical compound C1OC1COC(C)COCC1CO1 HDPLHDGYGLENEI-UHFFFAOYSA-N 0.000 description 1
- VSRMIIBCXRHPCC-UHFFFAOYSA-N 2-[2-[2-[2-[2-(oxiran-2-ylmethoxy)ethoxy]ethoxy]ethoxy]ethoxymethyl]oxirane Chemical compound C1OC1COCCOCCOCCOCCOCC1CO1 VSRMIIBCXRHPCC-UHFFFAOYSA-N 0.000 description 1
- YEKPPHVYLNUMDC-UHFFFAOYSA-N 2-[2-[4-(9H-fluoren-1-yl)phenoxy]ethoxymethyl]oxirane Chemical compound C(C1CO1)OCCOC1=CC=C(C=C1)C1=CC=CC=2C3=CC=CC=C3CC12 YEKPPHVYLNUMDC-UHFFFAOYSA-N 0.000 description 1
- QWPTZLOWXIETLI-UHFFFAOYSA-N 2-[2-[4-[9-[4-[2-(oxiran-2-ylmethoxy)ethoxy]phenyl]fluoren-9-yl]phenoxy]ethoxymethyl]oxirane Chemical compound C1OC1COCCOC(C=C1)=CC=C1C1(C2=CC=CC=C2C2=CC=CC=C21)C(C=C1)=CC=C1OCCOCC1CO1 QWPTZLOWXIETLI-UHFFFAOYSA-N 0.000 description 1
- SHKUUQIDMUMQQK-UHFFFAOYSA-N 2-[4-(oxiran-2-ylmethoxy)butoxymethyl]oxirane Chemical compound C1OC1COCCCCOCC1CO1 SHKUUQIDMUMQQK-UHFFFAOYSA-N 0.000 description 1
- WTYYGFLRBWMFRY-UHFFFAOYSA-N 2-[6-(oxiran-2-ylmethoxy)hexoxymethyl]oxirane Chemical compound C1OC1COCCCCCCOCC1CO1 WTYYGFLRBWMFRY-UHFFFAOYSA-N 0.000 description 1
- APHQXTQTOSFEQO-UHFFFAOYSA-N 2-[[2-(oxiran-2-ylmethoxy)-5-propylphenyl]methyl]oxirane Chemical compound C(C1CO1)C=1C=C(C=CC=1OCC1CO1)CCC APHQXTQTOSFEQO-UHFFFAOYSA-N 0.000 description 1
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 1
- HXLLCROMVONRRO-UHFFFAOYSA-N 2-butoxyethenylbenzene Chemical compound CCCCOC=CC1=CC=CC=C1 HXLLCROMVONRRO-UHFFFAOYSA-N 0.000 description 1
- LMINVPVFKAFJAZ-UHFFFAOYSA-N 2-ethenoxyethoxybenzene Chemical compound C=COCCOC1=CC=CC=C1 LMINVPVFKAFJAZ-UHFFFAOYSA-N 0.000 description 1
- TZLVUWBGUNVFES-UHFFFAOYSA-N 2-ethyl-5-methylpyrazol-3-amine Chemical compound CCN1N=C(C)C=C1N TZLVUWBGUNVFES-UHFFFAOYSA-N 0.000 description 1
- CBECDWUDYQOTSW-UHFFFAOYSA-N 2-ethylbut-3-enal Chemical compound CCC(C=C)C=O CBECDWUDYQOTSW-UHFFFAOYSA-N 0.000 description 1
- CDFCBRMXZKAKKI-UHFFFAOYSA-N 2-hydroxybenzaldehyde;phenol Chemical compound OC1=CC=CC=C1.OC1=CC=CC=C1C=O CDFCBRMXZKAKKI-UHFFFAOYSA-N 0.000 description 1
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 1
- 125000001622 2-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C(*)C([H])=C([H])C2=C1[H] 0.000 description 1
- WJQOZHYUIDYNHM-UHFFFAOYSA-N 2-tert-Butylphenol Chemical compound CC(C)(C)C1=CC=CC=C1O WJQOZHYUIDYNHM-UHFFFAOYSA-N 0.000 description 1
- KGIGUEBEKRSTEW-UHFFFAOYSA-N 2-vinylpyridine Chemical compound C=CC1=CC=CC=N1 KGIGUEBEKRSTEW-UHFFFAOYSA-N 0.000 description 1
- MRGGRPDTVDWEII-UHFFFAOYSA-N 3',6'-bis(oxiran-2-ylmethoxy)spiro[fluorene-9,9'-xanthene] Chemical compound C(C1CO1)OC=1C=CC=2C3(C4=CC=C(C=C4OC=2C=1)OCC1CO1)C1=CC=CC=C1C=1C=CC=CC=13 MRGGRPDTVDWEII-UHFFFAOYSA-N 0.000 description 1
- GCQUOBKUEHYBMC-UHFFFAOYSA-N 3-(diethylamino)-7,8-dihydro-6h-cyclopenta[2,3]thieno[2,4-b][1,3]oxazin-1-one Chemical compound O=C1OC(N(CC)CC)=NC2=C1C(CCC1)=C1S2 GCQUOBKUEHYBMC-UHFFFAOYSA-N 0.000 description 1
- BIDWUUDRRVHZLQ-UHFFFAOYSA-N 3-ethyl-3-(2-ethylhexoxymethyl)oxetane Chemical compound CCCCC(CC)COCC1(CC)COC1 BIDWUUDRRVHZLQ-UHFFFAOYSA-N 0.000 description 1
- JUXZNIDKDPLYBY-UHFFFAOYSA-N 3-ethyl-3-(phenoxymethyl)oxetane Chemical compound C=1C=CC=CC=1OCC1(CC)COC1 JUXZNIDKDPLYBY-UHFFFAOYSA-N 0.000 description 1
- LMIOYAVXLAOXJI-UHFFFAOYSA-N 3-ethyl-3-[[4-[(3-ethyloxetan-3-yl)methoxymethyl]phenyl]methoxymethyl]oxetane Chemical compound C=1C=C(COCC2(CC)COC2)C=CC=1COCC1(CC)COC1 LMIOYAVXLAOXJI-UHFFFAOYSA-N 0.000 description 1
- MECNWXGGNCJFQJ-UHFFFAOYSA-N 3-piperidin-1-ylpropane-1,2-diol Chemical compound OCC(O)CN1CCCCC1 MECNWXGGNCJFQJ-UHFFFAOYSA-N 0.000 description 1
- SBVKVAIECGDBTC-UHFFFAOYSA-N 4-hydroxy-2-methylidenebutanamide Chemical compound NC(=O)C(=C)CCO SBVKVAIECGDBTC-UHFFFAOYSA-N 0.000 description 1
- OECTYKWYRCHAKR-UHFFFAOYSA-N 4-vinylcyclohexene dioxide Chemical compound C1OC1C1CC2OC2CC1 OECTYKWYRCHAKR-UHFFFAOYSA-N 0.000 description 1
- YTNUOGWCFLMGLF-UHFFFAOYSA-N 5-methylbenzene-1,2,3,4-tetrol Chemical compound CC1=CC(O)=C(O)C(O)=C1O YTNUOGWCFLMGLF-UHFFFAOYSA-N 0.000 description 1
- RBHIUNHSNSQJNG-UHFFFAOYSA-N 6-methyl-3-(2-methyloxiran-2-yl)-7-oxabicyclo[4.1.0]heptane Chemical compound C1CC2(C)OC2CC1C1(C)CO1 RBHIUNHSNSQJNG-UHFFFAOYSA-N 0.000 description 1
- PGDIJTMOHORACQ-UHFFFAOYSA-N 9-prop-2-enoyloxynonyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCCCCOC(=O)C=C PGDIJTMOHORACQ-UHFFFAOYSA-N 0.000 description 1
- 229920008790 Amorphous Polyethylene terephthalate Polymers 0.000 description 1
- 101100064324 Arabidopsis thaliana DTX48 gene Proteins 0.000 description 1
- 229910017048 AsF6 Inorganic materials 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- YUOYJPPRZLIVGA-UHFFFAOYSA-N C1CC23C(=O)OC3CC1C2 Chemical compound C1CC23C(=O)OC3CC1C2 YUOYJPPRZLIVGA-UHFFFAOYSA-N 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- 238000004057 DFT-B3LYP calculation Methods 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 229920001665 Poly-4-vinylphenol Polymers 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 235000006732 Torreya nucifera Nutrition 0.000 description 1
- 244000111306 Torreya nucifera Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- MOLCWHCSXCKHAP-UHFFFAOYSA-N adamantane-1,3-diol Chemical compound C1C(C2)CC3CC1(O)CC2(O)C3 MOLCWHCSXCKHAP-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 229920005603 alternating copolymer Polymers 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000005134 atomistic simulation Methods 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- DJUWPHRCMMMSCV-UHFFFAOYSA-N bis(7-oxabicyclo[4.1.0]heptan-4-ylmethyl) hexanedioate Chemical compound C1CC2OC2CC1COC(=O)CCCCC(=O)OCC1CC2OC2CC1 DJUWPHRCMMMSCV-UHFFFAOYSA-N 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910001914 chlorine tetroxide Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- 238000010227 cup method (microbiological evaluation) Methods 0.000 description 1
- 125000000582 cycloheptyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229920005994 diacetyl cellulose Polymers 0.000 description 1
- 239000012955 diaryliodonium Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- NHOGGUYTANYCGQ-UHFFFAOYSA-N ethenoxybenzene Chemical compound C=COC1=CC=CC=C1 NHOGGUYTANYCGQ-UHFFFAOYSA-N 0.000 description 1
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- RMBPEFMHABBEKP-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2C3=C[CH]C=CC3=CC2=C1 RMBPEFMHABBEKP-UHFFFAOYSA-N 0.000 description 1
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-M hexanoate Chemical compound CCCCCC([O-])=O FUZZWVXGSFPDMH-UHFFFAOYSA-M 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 125000005462 imide group Chemical group 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- XJRBAMWJDBPFIM-UHFFFAOYSA-N methyl vinyl ether Chemical compound COC=C XJRBAMWJDBPFIM-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- UUORTJUPDJJXST-UHFFFAOYSA-N n-(2-hydroxyethyl)prop-2-enamide Chemical compound OCCNC(=O)C=C UUORTJUPDJJXST-UHFFFAOYSA-N 0.000 description 1
- SEEYREPSKCQBBF-UHFFFAOYSA-N n-methylmaleimide Chemical compound CN1C(=O)C=CC1=O SEEYREPSKCQBBF-UHFFFAOYSA-N 0.000 description 1
- JTHNLKXLWOXOQK-UHFFFAOYSA-N n-propyl vinyl ketone Natural products CCCC(=O)C=C JTHNLKXLWOXOQK-UHFFFAOYSA-N 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000002560 nitrile group Chemical group 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N o-biphenylenemethane Natural products C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Chemical compound [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- LYKRPDCJKSXAHS-UHFFFAOYSA-N phenyl-(2,3,4,5-tetrahydroxyphenyl)methanone Chemical compound OC1=C(O)C(O)=CC(C(=O)C=2C=CC=CC=2)=C1O LYKRPDCJKSXAHS-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000636 poly(norbornene) polymer Polymers 0.000 description 1
- 229920003050 poly-cycloolefin Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 150000003141 primary amines Chemical group 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 229920005573 silicon-containing polymer Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The invention provides a polarizing film capable of sufficiently inhibiting iodine contained in a polarizing plate from penetrating to the outside under a high-temperature and high-humidity environment. The polarizing film of the present invention comprises an iodine-containing polarizing plate and a resin layer comprising a polymer having at least 1 selected from the group consisting of a structural unit U1 derived from an epoxy group-containing compound A1 and a structural unit U2 derived from an oxetanyl group-containing compound A2. In the polarizing film, the value of y calculated by the following formula (1) is smaller than 4.00.y＝(-3.71)x1+(-3.94)x2+(0.299)x3+(0.226)x4+(-1.05)x5+(0.517)x6+(0.769)x7+71.81(1).
Description
Technical Field
The invention relates to a polarizing film, an image display device and a method for manufacturing the polarizing film.
Background
Image display devices such as liquid crystal display devices and organic EL display devices are provided with polarizing films for reasons such as display principles. The polarizing film is, for example, a laminate including a polarizing plate and a protective film. The polarizing plate can be generally produced by adsorbing a dichroic dye to a hydrophilic polymer film such as a polyvinyl alcohol (PVA) film, and uniaxially stretching the film. Iodine is widely used as a dichroic dye from the viewpoint of improving the transmittance and polarization degree of a polarizing plate.
Patent document 1 discloses attaching a protective film to a polarizing plate using an adhesive containing an epoxy compound. Specifically, in patent document 1, the polarizer and the protective film are bonded by curing the coating layer in a state where the polarizer and the protective film are overlapped with each other via the coating layer of the adhesive.
Prior art literature
Patent literature
Patent document 1: japanese patent application laid-open No. 2012-208250
Disclosure of Invention
Problems to be solved by the invention
In a high-temperature and high-humidity environment, iodine contained in the polarizing plate tends to move from the polarizing plate to the protective film or the adhesive layer for bonding the polarizing film to the image display panel. Particularly, when the thickness of the polarizer is small and the concentration of iodine in the polarizer is high, iodine tends to move from the polarizer to the protective film or the adhesive layer. The iodine moving to the protective film or the adhesive layer passes through the protective film or the adhesive layer to permeate to the outside of the polarizing film. When the iodine content in the polarizing plate is reduced, the degree of polarization of the polarizing film is reduced. In the conventional polarizing film, the permeation of iodine contained in the polarizing plate to the outside of the polarizing film cannot be sufficiently suppressed under a high-temperature and high-humidity environment.
Accordingly, an object of the present invention is to provide a polarizing film suitable for sufficiently suppressing the permeation of iodine contained in a polarizing plate to the outside in a high-temperature and high-humidity environment.
Means for solving the problems
The inventors of the present application have conducted intensive studies and as a result have newly obtained an insight that characteristics of a resin layer provided in a polarizing film can be predicted based on a monomer for forming a polymer contained in the resin layer. According to the studies of the inventors of the present application, the reliability was particularly high for a resin layer containing a polymer having a structural unit derived from a compound containing an epoxy group, a structural unit derived from a compound containing an oxetanyl group. The inventors of the present application have further studied based on this knowledge, and have completed the present application.
The present invention provides a polarizing film, which comprises:
An iodine-containing polarizer; and
A resin layer containing a polymer having at least 1 selected from the group consisting of a structural unit U1 derived from a compound A1 containing an epoxy group and a structural unit U2 derived from a compound A2 containing an oxetanyl group,
The value of y of the polarizing film calculated by the following formula (1) is less than 4.00.
y＝(-3.71)x1+(-3.94)x2+(0.299)x3+(0.226)x4+(-1.05)x5+(0.517)x6+(0.769)x7+71.81 (1)
In the above formula (1), x 1 is a dispersion term δd (MPa 1/2) in hansen solubility parameters of the monomer used to form the above polymer,
X 2 is the x component (debye) of the dipole moment of the monomer used to form the polymer,
X 3 is the interaction energy (kcal/mol) of the above monomers with water molecules for forming the above polymer,
X 4 is the usual log value of the solubility (g/100 g) of the above monomers for forming the above polymers in water at 25 ℃,
X 5 is the dipole moment (debye) of the monomer used to form the polymer,
X 6 is the z component (debye) of the dipole moment of the monomer used to form the polymer,
X 7 is the number of hydrogen bond acceptors in the above monomers used to form the above polymer.
The present invention also provides an image display device including:
The polarizing film; and
An image display panel.
The present invention also provides a method for producing a polarizing film comprising an iodine-containing polarizing plate and a resin layer comprising a polymer having at least 1 selected from the group consisting of a structural unit U1 derived from an epoxy group-containing compound A1 and a structural unit U2 derived from an oxetanyl group-containing compound A2, wherein the method comprises a step of polymerizing a monomer having y calculated from the following formula (1) of less than 4.00 to obtain the polymer.
y＝(-3.71)x1+(-3.94)x2+(0.299)x3+(0.226)x4+(-1.05)x5+(0.517)x6+(0.769)x7+71.81 (1)
In the above formula (1), x 1 is a dispersion term δD (MPa 1/2) in the Hansen solubility parameter of the above monomer,
X 2 is the x component (debye) of the dipole moment of the monomer,
X 3 is the interaction energy (kcal/mol) of the above monomers with water molecules,
X 4 is the usual log value of the solubility of the abovementioned monomers in water at 25℃in g/100g,
X 5 is the dipole moment (debye) of the monomer,
X 6 is the z component (debye) of the dipole moment of the monomer,
X 7 is the number of hydrogen bond acceptors in the above monomers.
Effects of the invention
According to the present invention, a polarizing film suitable for sufficiently suppressing the permeation of iodine contained in a polarizing plate to the outside in a high-temperature and high-humidity environment can be provided.
Drawings
FIG. 1 is a schematic cross-sectional view of a polarizing film according to one embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view showing a modification of the polarizing film.
FIG. 3 is a schematic cross-sectional view showing another modification of the polarizing film.
FIG. 4 is a schematic cross-sectional view showing still another modification of the polarizing film.
FIG. 5 is a schematic cross-sectional view showing still another modification of the polarizing film.
Fig. 6 is a schematic cross-sectional view of an image display device according to an embodiment of the present invention.
FIG. 7 is a schematic view of a polarizing film used in a crack evaluation test.
Detailed Description
The polarizing film according to claim 1 of the present invention comprises:
An iodine-containing polarizer;
A resin layer comprising a polymer having at least 1 selected from the group consisting of a structural unit U1 derived from an epoxy group-containing compound A1 and a structural unit U2 derived from an oxetanyl group-containing compound A2,
The value of y calculated from the following formula (1) is less than 4.00.
y＝(-3.71)x1+(-3.94)x2+(0.299)x3+(0.226)x4+(-1.05)x5+(0.517)x6+(0.769)x7+71.81 (1)
In the above formula (1), x 1 is a dispersion term δd (MPa 1/2) in hansen solubility parameters of monomers used to form the polymer,
X 2 is the x component (debye) of the dipole moment of the monomer used to form the polymer,
X 3 is the interaction energy (kcal/mol) of the above monomers with water molecules for forming the above polymer,
X 4 is the usual log value of the solubility (g/100 g) of the above monomers for forming the above polymers in water at 25 ℃,
X 5 is the dipole moment (debye) of the monomer used to form the polymer,
X 6 is the z component (debye) of the dipole moment of the monomer used to form the polymer,
X 7 is the number of hydrogen bond acceptors in the above monomers used to form the above polymer.
In the 2 nd aspect of the present invention, for example, in the polarizing film of the 1 st aspect, the value of y is 2.30 or less.
In the 3 rd aspect of the present invention, for example, in the polarizing film of the 1 st or 2 nd aspect, the polymer includes both the structural unit U1 and the structural unit U2.
In the 4 th aspect of the present invention, for example, in the polarizing film according to any one of the 1 st to 3 rd aspects, the total value of the content of the structural unit U1 and the content of the structural unit U2 in the polymer is 70 wt% or more.
In embodiment 5 of the present invention, for example, in the polarizing film according to any one of embodiments 1 to 4, the compound A1 contains a ring structure other than an epoxy group.
In the 6 th aspect of the present invention, for example, in the polarizing film according to any one of the 1 st to 5 th aspects, the compound A1 contains at least 1 selected from the group consisting of an aliphatic ring and an aromatic ring.
In the 7 th aspect of the present invention, for example, in the polarizing film according to any one of the 1 st to 6 th aspects, the resin layer contains an acid generator and/or a decomposition product of the acid generator.
In the 8 th aspect of the present invention, for example, in the polarizing film according to any one of the 1 st to 7 th aspects, the resin layer is in direct contact with the polarizing plate.
In the 9 th aspect of the present invention, for example, in the polarizing film according to any one of the 1 st to 8 th aspects, the thickness of the resin layer is less than 3 μm.
In the 10 th aspect of the present invention, for example, in the polarizing film according to any one of the 1 st to 9 th aspects, the thickness of the polarizing plate is 1 μm or more and less than 7 μm.
In the 11 th aspect of the present invention, for example, in the polarizing film according to any one of the 1 st to 10 th aspects, the polarizing plate contains polyvinyl alcohol as a main component.
In the 12 th aspect of the present invention, for example, the polarizing film according to any one of the 1 st to 11 th aspects further comprises a protective film.
In a 13 th aspect of the present invention, for example, in the polarizing film of the 12 th aspect, the protective film, the resin layer, and the polarizing plate are sequentially arranged in a lamination direction.
In the 14 th aspect of the present invention, for example, in the polarizing film of the 12 th or 13 th aspect, the protective film has a moisture permeability of 300 g/(m 2 day) or more.
In the 15 th aspect of the present invention, for example, in the polarizing film according to any one of the 12 th to 14 th aspects, the protective film contains triacetyl cellulose as a main component.
In the 16 th aspect of the present invention, for example, in the polarizing film according to any one of the 12 th to 15 th aspects, the thickness of the protective film is less than 40 μm.
An image display device according to claim 17 of the present invention includes:
A polarizing film according to any one of modes 1 to 16; and
An image display panel.
The method for producing a polarizing film according to claim 18 of the present invention is a method for producing a polarizing film comprising an iodine-containing polarizing plate and a resin layer comprising a polymer having at least 1 selected from the group consisting of a structural unit U1 derived from an epoxy group-containing compound A1 and a structural unit U2 derived from an oxetanyl group-containing compound A2, wherein the method comprises a step of polymerizing a monomer having a value y calculated from the following formula (1) of less than 4.00 to obtain the polymer.
y＝(-3.71)x1+(-3.94)x2+(0.299)x3+(0.226)x4+(-1.05)x5+(0.517)x6+(0.769)x7+71.81 (1)
In the above formula (1), x 1 is a dispersion term δD (MPa 1/2) in the Hansen solubility parameter of the above monomer,
X 2 is the x component (debye) of the dipole moment of the monomer,
X 3 is the interaction energy (kcal/mol) of the above monomers with water molecules,
X 4 is the usual log value of the solubility of the abovementioned monomers in water at 25℃in g/100g,
X 5 is the dipole moment (debye) of the monomer,
X 6 is the z component (debye) of the dipole moment of the monomer,
X 7 is the number of hydrogen bond acceptors in the above monomers.
The following detailed description of the invention is, however, not intended to limit the invention to the particular embodiments.
(Embodiment of polarizing film)
As shown in fig. 1, the polarizing film 10 of the present embodiment includes an iodine-containing polarizing plate 1 and a resin layer 2 containing a polymer P. The polymer P contained in the resin layer 2 has at least 1 selected from the group consisting of a structural unit U1 from a compound A1 containing an epoxy group and a structural unit U2 from a compound A2 containing an oxetanyl group. The resin layer 2 is located on the viewing side of the polarizer 1, for example, and is in direct contact with the polarizer 1. However, other layers such as an adhesive layer and an easy-to-adhere layer may be disposed between the resin layer 2 and the polarizing plate 1 within a range that does not hinder the effects of the present invention. The resin layer 2 may be located on the image display panel side described later with respect to the polarizing plate 1. In other words, the polarizing plate 1 may be positioned on the viewing side of the resin layer 2. The resin layer 2 is located, for example, at the outermost side of the polarizing film 10. In the present specification, the term "film" means a member having a sufficiently small thickness compared to the length and width.
The polarizing film 10 may further include an adhesive layer 3, a protective film 4, and an adhesive layer 5. The protective film 4 is bonded to the polarizer 1 via the adhesive layer 3, for example. The pressure-sensitive adhesive layer 5 functions as a member for bonding the polarizing film 10 to an image display panel described later, for example. Therefore, the adhesive layer 5 is located, for example, on the outermost side of the polarizing film 10 and on the image display panel side of the polarizing plate 1. In other words, the polarizing plate 1 is located on the visual side of the adhesive layer 5, for example. The resin layer 2, the polarizing plate 1, the adhesive layer 3, the protective film 4, and the adhesive layer 5 are arranged in this order in the lamination direction, for example.
In the polarizing film 10 of the present embodiment, the value of y calculated by the following formula (1) is less than 4.00.
y＝(-3.71)x1+(-3.94)x2+(0.299)x3+(0.226)x4+(-1.05)x5+(0.517)x6+(0.769)x7+71.81 (1)
In the formula (1), x 1 is a dispersion term δD of hansen solubility parameters of the monomer M for forming the polymer P (MPa 1 /2).x1 may be an index for predicting interaction between the polymer P and water molecules or iodine), hansen solubility parameters are parameters obtained by dividing the solubility parameters introduced by Hildebrand into 3 components of a dispersion term δD, a polarity term δP and a hydrogen bond term δH, the dispersion term δD represents energy generated by intermolecular dispersion force, details of hansen solubility parameters are disclosed in "Hansen Solubility Parameters; A Users Handbook (CRC Press, 2007)", the dispersion term δD may be calculated using known software such as HSPIP (version 5), and it is required to be explained that the value of the dispersion term δD is slightly different depending on the software used, but the error is usually a negligible degree in calculating the value of y.
In the case where the polymer P is formed from a plurality of monomers M, the value of x 1 can be determined by the following method. First, dispersion term δd (MPa 1/2) in hansen solubility parameter was calculated for each of the plurality of monomers M. The calculated dispersion term δd is weighted by the molar ratio of each monomer M and weighted average is performed. The resulting weighted average can be considered as x 1. In the present embodiment, the value of x 1 is not particularly limited, and is, for example, 15 to 20 (MPa 1/2), preferably 16.4 to 18.9 (MPa 1/2).
X 2 is the x component (debye) of the dipole moment of the monomers M used to form the polymer P. x 2 can be an index for predicting the interaction generated between the polymer P and water molecules, i.e., an index for predicting the degree of hydrophobicity, humidification durability of the polymer P. The closer the value of x 2 is to 0, the smaller the dipole moment of the monomer M, and the more hydrophobic the polymer P tends to be.
X 2 can be determined, for example, by the following method. First, the monomer M for forming the polymer P is determined. By molecular modeling the monomer M, the x component of the dipole moment can be calculated. Molecular modeling can be performed using known software such as MATERIALS STUDIO (manufactured by BIOVIA, ver.8.0.0.843) and WebMO (ver.19.0.009 e).
The calculation of the x component in the dipole moment D by molecular simulation can be performed, for example, by the following method. First, a molecular model of the monomer M was made using MATERIALS STUDIO. For the molecular model, the structure was optimized using the force field of the Condensed-phase Optimized MolecularPotentials for Atomistic Simulation Studies (Condensed-phase optimized molecular potential for atomic simulation studies) II. Next, the molecular model of monomer M is treated with WebMO. In detail, in WebMO, a structural optimization calculation was performed on the molecular model of monomer M using a Gaussian program (Queue: g 09). In this case, B3LYP may be used as the generalized function, or 6-31G (d) may be used as the basis function. From this, the x component of the dipole moment D of the monomer M can be calculated. In the molecular simulation, the internal coordinates of each atom constituting the monomer M are defined by the Z-matrix form. With the Z-matrix form, the x, y and Z axes for determining the internal coordinates are automatically determined according to the structure of the monomer M.
When the polymer P is formed from a plurality of monomers M, x 2 can be determined by the following method. First, for each of the plurality of monomers M, the x component in the dipole moment is calculated by the above-described method. The x component in the calculated dipole moment is weighted by the molar ratio of each monomer M and weighted average is performed. The resulting weighted average can be considered as x 2. In the case where the plurality of monomers M are structural isomers, x 2 may be determined by weighting and averaging the x component in the calculated dipole moment by the molar ratio of each structural isomer. In the present embodiment, the value of x 2 is not particularly limited, and is, for example, -1.0 to 1.0 debye.
X 3 is the interaction energy ΔE (kcal/mol) of the monomer M for forming the polymer P with water molecules. x 3 may be an index for predicting the interaction generated between the polymer P and water molecules, i.e., an index for predicting the degree of hydrophobicity, humidification durability of the polymer P.
X 3 can be determined, for example, by the following method. First, the monomer M for forming the polymer P is determined. According to the method described above for x 2, a molecular model of monomer M is built and a structural optimization calculation is performed on the molecular model. From this, the potential E M (kcal/mol) of the monomer M per 1 molecule was calculated. Then, a molecular model of water molecules was prepared by the same method, and the structure optimization calculation was performed on the molecular model. From this, the potential E H2O (kcal/mol) of water molecules per 1 molecule was calculated. Further, a molecular model containing 1 molecular monomer M and 1 molecular water molecule was prepared by the same method. In this molecular model, water molecules are disposed in the vicinity of hydrogen bond acceptors contained in the monomer M. For this molecular model, by performing structure optimization calculation, the potential energy E M+H2O (kcal/mol) of the complex of the monomer M and water molecules was calculated. From the calculated potential energy, x 3 can be determined by the following equation.
x3(ΔE)＝EM+H2O-(EM+EH2O)
The hydrogen bond acceptor means an atom capable of forming a hydrogen bond with a hydrogen atom contained in a water molecule. Examples of the hydrogen bond acceptor include atoms having relatively large electronegativity such as an oxygen atom and a nitrogen atom. In the case where monomer M contains multiple hydrogen bond acceptors, potential E M+H2O can be determined by the following method. First, a plurality of molecular models containing 1 molecular monomer M and 1 molecular water molecule are prepared. The number of molecular models corresponds to the number of hydrogen bond acceptors contained in 1 molecule of monomer M. In a plurality of molecular models, hydrogen bond acceptors in which water molecules are arranged in the vicinity are different from each other. Next, potential energy is calculated by performing structural optimization calculation on each of the plurality of molecular models. The average of the calculated values can be regarded as potential energy E M+H2O.
In the case where the polymer P is formed from a plurality of monomers M, x 3 can be determined by the following method. First, the interaction energy Δe with water molecules was calculated for each of the plurality of monomers M. The calculated interaction energy Δe is weighted by the molar ratio of each monomer M and weighted average is performed. The resulting weighted average can be considered as x3. In the present embodiment, the value of x3 is not particularly limited, and is, for example, -20 to 10kcal/mol.
X4 is the usual logarithmic value log of the solubility S (g/100 g) of the monomers M for forming the polymer P in water at 25 ℃. x4 may be an index for predicting the solubility of the polymer P in water, i.e., an index for predicting the degree of hydrophobicity and humidification durability of the polymer P. The solubility S refers in detail to the maximum value of the weight (g) of the monomer M which can be dissolved in 100g of water at 25 ℃.
LogS can be calculated using well known software such as HSPIP (version 5). Hsppi can calculate the solubility of any compound, its commonly used log value log, using a multiple regression equation made based on measured values of the solubility of a plurality of compounds. The solubility and log calculated using hsppi are known to agree well with the measured values.
In the case where the polymer P is formed from a plurality of monomers M, x 4 can be determined by the following method. First, the log of each of the plurality of monomers M is calculated. The calculated log is weighted by the molar ratio of each monomer M and weighted average is performed. The resulting weighted average can be considered as x 4. In the present embodiment, the value of x 4 is not particularly limited, and is, for example, -5.0 to 10.
X 5 is the dipole moment (debye) of the monomers M used to form the polymer P. x 5 can be an index for predicting the interaction generated between the polymer P and water molecules, i.e., an index for predicting the degree of hydrophobicity, humidification durability of the polymer P. The closer x 5 value is to 0, the more hydrophobic polymer P tends to be. x 5 can be calculated by molecular modeling as described above for x 2. The dipole moment is a vector calculated from the x-component, y-component, and z-component.
In the case where the polymer P is formed from a plurality of monomers M, x 5 can be determined by the following method. First, the respective dipole moments in the plurality of monomers M are calculated. The calculated dipole moment is weighted by the molar ratio of each monomer M and weighted average is performed. The resulting weighted average can be considered as x 5. In the case where the plurality of monomers M are structural isomers with each other, x 5 can also be determined by weighting the calculated dipole moment by the molar ratio of each structural isomer and performing weighted average. In the present embodiment, the value of x 5 is not particularly limited, and is, for example, 2.0 to 5.0 debye.
X 6 is the z component of the dipole moment of the monomers M used to form the polymer P (Debye). x 6 may be an index for predicting the interaction generated between the polymer P and water molecules, i.e., an index for predicting the degree of hydrophobicity, humidification durability of the polymer P. The closer x 6 value is to 0, the more hydrophobic polymer P tends to be. x 6 can be calculated by molecular modeling as described above for x 2.
In the case where the polymer P is formed from a plurality of monomers M, x 6 can be determined by the following method. First, the z-component in the dipole moment of each of the plurality of monomers M is calculated. The z component in the calculated dipole moment is weighted by the molar ratio of each monomer M and weighted average is performed. The resulting weighted average can be considered as x 6. In the case where the plurality of monomers M are structural isomers with each other, x 6 may be determined by weighting and averaging the z component in the calculated dipole moment by the molar ratio of each structural isomer. In the present embodiment, the value of x 6 is not particularly limited, and is, for example, -2.0 to 3.0 debye.
X 7 is the number of hydrogen bond acceptors in monomer M used to form polymer P. x 7 can be an index for predicting the solubility of the polymer P in water, i.e., an index for predicting the degree of hydrophobicity, humidification durability of the polymer P. As described above, the hydrogen bond acceptor means an atom capable of forming a hydrogen bond with a hydrogen atom contained in a water molecule. The number of hydrogen bond acceptors can be determined using the molecular modeling described above for x 2.
In the case where the polymer P is formed from a plurality of monomers M, x 7 can be determined by the following method. First, the number of hydrogen bond acceptors is determined for each of the plurality of monomers M. For the determined number of hydrogen bond acceptors, the molar ratio of the monomers M is weighted and weighted averaged. The resulting weighted average can be considered as x 7. In the present embodiment, the value of x 7 is not particularly limited, and is, for example, 2.0 to 6.0.
The y value calculated from the formula (1) is preferably 3.00 or less, more preferably 2.30 or less, and may be 2.00 or less, or may be 1.00 or less, from the viewpoint of sufficiently suppressing the permeation of iodine contained in the polarizing plate 1 to the outside. However, the smaller the value of y, the higher the viscosity of the monomer M and the solution containing the monomer M, and the more difficult it tends to be to produce the resin layer 2. From the viewpoint of easy production of the resin layer 2, the value of y is, for example, -2.00 or more, or may be 0 or more, or may be 1.00 or more, or may be 2.00 or more, as the case may be.
The value of y calculated from the formula (1) is an index on the monomer M used to form the polymer P contained in the resin layer 2. However, according to the study of the inventors of the present application, the value of y is also useful as an index for selecting a resin layer 2 suitable for suppressing the permeation of iodine contained in the polarizing plate 1 to the outside.
[ Polarizer ]
The polarizing plate 1 is not particularly limited as long as it contains iodine, and examples thereof include polarizing plates obtained by uniaxially stretching a hydrophilic polymer film such as a polyvinyl alcohol film, a partially formalized polyvinyl alcohol film, or an ethylene-vinyl acetate copolymer partially saponified film by adsorbing iodine. The polarizing plate 1 is preferably composed of a polyvinyl alcohol film and iodine. The polarizing plate 1 contains polyvinyl alcohol as a main component, for example. In the present specification, "main component" means a material that is most contained in the polarizer 1 on a weight basis.
The thickness of the polarizing plate 1 is not particularly limited, and is, for example, 30 μm or less, preferably 20 μm or less, more preferably 18 μm or less, further preferably 15 μm or less, particularly preferably 12 μm or less, and particularly preferably 10 μm or less. The thickness of the polarizing plate 1 may be 2 μm or more, may be 4 μm or more, or may be 5 μm or more. The thickness of the polarizing plate 1 may be 7 to 12. Mu.m, and may be 1 μm or more and less than 7. Mu.m, particularly 4 to 6. Mu.m. In this specification, the polarizing plate 1 having a thickness of 10 μm or less is sometimes referred to as a thin polarizing plate. The thin polarizing plate tends to have less thickness unevenness and excellent visibility. Further, the thin polarizing plate has an advantage that dimensional change is suppressed and durability is excellent. The polarizing film 10 can be thinned by using a thin polarizing plate. When the polarizing plate 1 is a thin polarizing plate, the concentration of iodine in the polarizing plate 1 needs to be adjusted to be high in order to provide the polarizing film 10 with practically sufficient polarization. In the polarizing film 10 of the present embodiment, even when the thickness of the polarizing plate 1 is small and the concentration of iodine in the polarizing plate 1 is high, the permeation of iodine from the polarizing plate 1 to the outside can be sufficiently suppressed.
The polarizing plate 1 can be produced by, for example, immersing a hydrophilic polymer film such as a polyvinyl alcohol film in an aqueous iodine solution, dyeing the film, and stretching the film to 3 to 7 times the original length. The hydrophilic polymer film may be immersed in an aqueous solution containing boric acid, potassium iodide, or the like, as necessary. Further, the hydrophilic polymer film may be immersed in water before dyeing and washed with water, if necessary. The hydrophilic polymer film is washed with water to clean dirt adhering to the surface and to prevent blocking. The hydrophilic polymer film swells when washed with water, and thus has an effect of suppressing uneven dyeing. The hydrophilic polymer film may be stretched after being dyed with iodine, while being dyed, or before being dyed with iodine. The stretching of the hydrophilic polymer film may be performed in an aqueous solution containing boric acid, potassium iodide, or the like, or in water.
As the thin polarizing plate, those described in japanese patent application laid-open publication No. 51-069644, japanese patent application laid-open publication No. 2000-338329, international publication No. 2010/100917, japanese patent application laid-open publication No. 2014-59328, japanese patent application laid-open publication No. 2012-73563, and the like are typically cited. These thin polarizers can be produced by a production method including a step of stretching a laminate including a polyvinyl alcohol resin (PVA-based resin) layer and a stretching resin base material, and a step of dyeing the obtained stretched film. In this production method, since the PVA-based resin layer is supported by the resin base material for stretching, defects such as breakage due to stretching are less likely to occur.
In view of the possibility of stretching at a high magnification and the possibility of improving polarization performance, among the above-mentioned production methods, it is preferable to produce a thin polarizing plate by a production method including a stretching step in an aqueous boric acid solution, and it is particularly preferable to produce a thin polarizing plate by a production method including a step of performing auxiliary stretching in air before the stretching step in an aqueous boric acid solution. Methods for producing the aqueous boric acid solution including a stretching step are disclosed in International publication No. 2010/100917, japanese patent application laid-open No. 2014-59328, japanese patent application laid-open No. 2012-73563, and the like. Methods for manufacturing the air-stretching process are disclosed in Japanese patent application laid-open No. 2014-59328 and Japanese patent application laid-open No. 2012-73563.
[ Resin layer ]
As described above, the resin layer 2 contains the polymer P having at least 1 selected from the group consisting of the structural unit U1 from the compound A1 containing an epoxy group and the structural unit U2 from the compound A2 containing an oxetanyl group. The compounds A1 and A2 can be used as the monomer M for forming the polymer P.
The compound A1 may be a monofunctional epoxy compound having 1 epoxy group, or may be a multifunctional epoxy compound having 2 or more epoxy groups. The number of epoxy groups contained in the polyfunctional epoxy compound is not particularly limited, and is, for example, 2 or more, preferably 2 to 6, and more preferably 2 to 4.
The compound A1 may not contain a ring structure R other than an epoxy group, but preferably contains. The number of the ring structures R contained in the compound A1 is, for example, 1 or more, preferably 1 to 10, and may be 1 to 6. In the compound A1, a plurality of ring structures R may be condensed with each other. In the compound A1, the epoxy ring and the ring structure R may be condensed. In the present specification, "condensed" refers to a state in which 2 or more carbon atoms are shared by adjacent 2 ring structures and covalent bonds are formed between these carbon atoms.
The compound A1 preferably contains at least 1 selected from the group consisting of an aliphatic ring and an aromatic ring as the ring structure R. The aliphatic ring has no aromatic character and is a ring structure composed of only carbon atoms. The number of carbon atoms of the aliphatic ring is not particularly limited, and is, for example, 5 to 10. Specific examples of the aliphatic ring include cyclopentane ring, cyclohexane ring, and cycloheptane ring. The 2 aliphatic rings may be condensed with each other to form a norbornane ring or the like. The aromatic ring has an aromatic ring structure. The aromatic ring may be composed of only carbon atoms. The aromatic ring is typically a benzene ring.
The ring structure R is not limited to the above aliphatic ring and aromatic ring. The ring structure R may be a heterocyclic ring containing a heteroatom such as a nitrogen atom and an oxygen atom. As an example, the compound A1 may contain an oxetane ring as a heterocycle, but preferably does not contain it.
The compound A1 may further contain a functional group other than an epoxy group. Examples of the other functional group include an ether group and an ester group. The compound A1 may further contain a polar group containing a bond of a hydrogen atom to a heteroatom as another functional group, but preferably does not contain a polar group. Examples of the polar group include a hydroxyl group, a carboxyl group, a primary amine group, and a secondary amine group.
The compound A1 may be an epoxy monomer or an epoxy prepolymer (epoxy resin). The compound A1 is preferably an epoxy monomer. The molecular weight of the epoxy monomer is not particularly limited, and is, for example, less than 1000, preferably 800 or less, and may be 500 or less. The weight average molecular weight of the epoxy prepolymer is not particularly limited, and is, for example, 1000 to 50000.
Specific examples of the compound A1 having an aromatic ring include glycidyl ether compounds having a structure derived from bisphenols such as bisphenol a, bisphenol F, bisphenol S, etc. (e.g., bisphenol epoxy resins); glycidyl ether compounds having a structure derived from other phenols such as tetrahydroxyphenyl methane, tetrahydroxybenzophenone, polyvinyl phenol, and t-butylphenol; glycidyl ether compounds having a fluorene skeleton such as 9, 9-bis {4- [2- (oxiran-2-ylmethoxy) ethoxy ] phenyl } -9H-fluorene, 3',6' -bis (oxiran-2-ylmethoxy) spiro [ fluorene-9, 9' -xanthene ]; novolac epoxy resins such as phenol Novolac epoxy resin, cresol Novolac epoxy resin and hydroxybenzaldehyde phenol Novolac epoxy resin; etc.
Specific examples of the aliphatic ring-having compound A1 include epoxy compounds having a cyclohexane skeleton such as vinylcyclohexene dioxide, 3',4' -epoxycyclohexylmethyl-3, 4-epoxycyclohexane carboxylate, limonene dioxide, bis (3, 4-epoxycyclohexylmethyl) adipate and the like; epoxy compounds having a condensed ring skeleton such as dicyclopentadiene diepoxide, bicyclonadiene diepoxide, tricyclopentadiene diepoxide, dodecahydro-2, 6-methano-2H-oxirano [3',4' ] cyclopenta [1',2':6,7] naphthyl [2,3-b ] oxirane; dicyclopentadiene type epoxy resins and the like.
Specific examples of the compound A1 having a ring structure R other than an epoxy group include glycidyl ether compounds such as 1, 4-butanediol diglycidyl ether, 1, 6-hexanediol diglycidyl ether, glycerol polyglycidyl ether, trimethylolpropane polyglycidyl ether, ethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether, and polyethylene glycol diglycidyl ether.
The above exemplified compound A1 may be used alone or in combination of 1 or more than 2.
The compound A2 may be a monofunctional oxetane compound containing 1 oxetanyl group, or may be a polyfunctional oxetane compound having 2 or more oxetanyl groups. The number of oxetanyl groups contained in the polyfunctional oxetane compound is not particularly limited, and is, for example, 2 or more, preferably 2 to 6, and more preferably 2 to 4. The compound A2 tends to promote a reaction for synthesizing the polymer P.
The compound A2 may further contain a ring structure other than oxetanyl group, or may not contain it. Examples of the ring structure other than oxetanyl group include those described above for the compound A1. The compound A2 does not contain an epoxy group as a ring structure other than oxetanyl group, for example.
The compound A2 may further contain a functional group other than an oxetanyl group. Examples of the other functional group include an ether group and an ester group. The compound A2 may further contain a polar group as another functional group, but preferably does not contain a polar group.
The compound A2 may be an oxetane monomer or an oxetane prepolymer (oxetane resin). Compound A2 is preferably an oxetane monomer. The molecular weight of the oxetane monomer is not particularly limited, and is, for example, less than 1000, preferably 800 or less, and may be 500 or less. The weight average molecular weight of the oxetane prepolymer is not particularly limited, and is, for example, 1000 to 50000.
Specific examples of the compound A2 include oxetane compounds having no ring structure other than oxetanyl group, such as 3-ethyl-3-hydroxymethyl oxetane, bis [ (3-ethyl-3-oxetanyl) methyl ] ether, and 3-ethyl-3- (2-ethylhexyloxymethyl) oxetane; oxetane compounds containing a benzene ring such as 1, 4-bis [ (3-ethyl-3-oxetanyl) methoxymethyl ] benzene, 3-ethyl-3- (phenoxymethyl) oxetane, and 4,4' - (3-ethyloxetan-3-ylmethoxymethyl) biphenyl. The above exemplified compound A2 may be used alone or in combination of 1 or more than 2.
The content of the structural unit U1 derived from the compound A1 in the polymer P is not particularly limited, and may be, for example, 10% by weight or more, 30% by weight or more, 50% by weight or more, or 70% by weight or more. The polymer P may consist essentially of only structural units U1. In the present specification, "substantially consist of" means that other structural units excluding the essential characteristics of the structural units mentioned are changed, and for example, 95% by weight or more, and further 99% by weight or more are constituted of the structural units. The preferable range of the content of the structural unit U1 is, for example, 50 to 90% by weight.
The content of the structural unit U2 derived from the compound A2 in the polymer P is not particularly limited, and may be, for example, 5% by weight or more, 10% by weight or more, 20% by weight or more, 30% by weight or more, 40% by weight or more, or 50% by weight or more. The polymer P may consist essentially of only structural units U2. The preferable range of the content of the structural unit U2 is, for example, 10 to 50 wt%.
The polymer P preferably comprises both structural units U1 and U2. In the polymer P, the total value of the content of the structural units U1 and the content of the structural units U2 is, for example, 50% by weight or more, preferably 70% by weight or more, more preferably 80% by weight or more, still more preferably 90% by weight or more, particularly preferably 95% by weight or more, and particularly preferably 99% by weight or more.
The polymer P may further contain structural units derived from other cationically polymerizable monomers than the compounds A1 and A2. Further, the polymer P may contain a structural unit derived from a radical polymerizable monomer.
Examples of the other cationically polymerizable monomer include vinyl ether compounds. Examples of the vinyl ether compound include aliphatic vinyl ethers such as methyl vinyl ether, ethyl vinyl ether, butyl vinyl ether, and cyclohexyl vinyl ether; aromatic vinyl ethers such as phenyl vinyl ether, 2-phenoxyethyl vinyl ether, and p-methoxyphenyl vinyl ether; and multifunctional vinyl ethers such as butanediol-1, 4-divinyl ether, triethylene glycol divinyl ether, dipropylene glycol divinyl ether, and the like.
Examples of the radical polymerizable monomer include (meth) acrylic acid esters and styrene compounds. In the present specification, "(meth) acrylic" means acrylic acid and/or methacrylic acid.
Examples of the (meth) acrylic acid ester include monofunctional (meth) acrylic acid esters such as dicyclopentanyl (meth) acrylate, 4-t-butylcyclohexyl (meth) acrylate, lauryl (meth) acrylate, 5- (meth) acryloyloxy-2, 6-norbornanecarbolactone, 3, 5-trimethylcyclohexyl (meth) acrylate, 4-t-butylphenyl (meth) acrylate, isobornyl (meth) acrylate, 1-adamantyl (meth) acrylate, 2-methyl-2-adamantyl (meth) acrylate, 2-ethyl-2-adamantyl (meth) acrylate, 2-isopropyl-2-adamantyl (meth) acrylate, 4-biphenylyl (meth) acrylate, 1-naphthyl (meth) acrylate, 2-naphthyl (meth) acrylate, 1-anthracene (meth) acrylate, 9-anthracene methyl (meth) acrylate; 2-functional (meth) acrylates such as dimethylol-tricyclodecane di (meth) acrylate, 1, 3-adamantanediol di (meth) acrylate, 1,3, 5-adamantanetriol-1, 5-di (meth) acrylate, and 9, 9-bis [4- (2- (meth) acryloyloxyethoxy) phenyl ] fluorene; 3-functional (meth) acrylates such as trimethylolpropane tri (meth) acrylate, glycerol tri (meth) acrylate, and 1,3, 5-adamantatriol tri (meth) acrylate; 4-functional (meth) acrylates such as pentaerythritol tetra (meth) acrylate; dipentaerythritol hexa (meth) acrylate and the like 6-functional (meth) acrylate and the like.
Examples of the styrene compound include styrene, α -methylstyrene, vinylbenzyl chloride, butoxystyrene, and vinylpyridine.
The polymer P preferably comprises structural units derived from polyfunctional monomers. Examples of the polyfunctional monomer include the polyfunctional epoxy compound, the polyfunctional oxetane compound, the polyfunctional (meth) acrylate, and the polyfunctional vinyl ether compound described above. The content of the structural unit derived from the polyfunctional monomer in the polymer P is, for example, 20% by weight or more, preferably 40% by weight or more, more preferably 50% by weight or more, and may be 70% by weight or more in some cases. The upper limit of the content of the structural unit derived from the polyfunctional monomer is not particularly limited, and is, for example, 95% by weight.
The polymer P may contain structural units derived from monomers having polar groups, but is preferably free. In the case where the polymer P contains a structural unit derived from a monomer having a polar group, iodine contained in the polarizing plate 1 tends to easily access the resin layer 2. Therefore, the content of the structural unit derived from the monomer having a polar group in the polymer P is preferably 20% by weight or less, more preferably 10% by weight or less, further preferably 5% by weight or less, and particularly preferably 2% by weight or less.
The resin layer 2 contains, for example, a polymer P as a main component. The content of the polymer P in the resin layer 2 is, for example, 50% by weight or more, preferably 70% by weight or more, more preferably 90% by weight or more, and still more preferably 95% by weight or more. The resin layer 2 is preferably formed substantially only of the polymer P.
However, the resin layer 2 may contain other components than the polymer P. Examples of the other component include an acid generator, a decomposed product of the acid generator, an antistatic agent, an antioxidant, inorganic particles, a leveling agent, and the like. The resin layer 2 contains, for example, an acid generator and/or a decomposition product of the acid generator as other components. The acid generator is typically a photoacid generator that functions as a polymerization initiator for the compound A1 or the compound A2.
Examples of the photoacid generator include compounds represented by the following formula (i).
L+X-(i)
In formula (i), L + is an onium cation. Examples of onium cations include sulfonium cations, sulfoxonium cations, phosphonium cations, pyridinium cations, quinolinium cations, isoquinolinium cations, benzoxazolium cations, benzothiazolium cations, furyl iodonium cations, thienyl iodonium cations, and diaryliodonium cations, and sulfonium cations are preferred.
X - is a counter anion. Examples of the counter anion include PF6 -、SbF6 -、AsF6 -、SbCl6 -、BiCl5 -、SnCl6 -、ClO4 -、 dithiocarbamate anion and SCN -, and preferably PF 6 -.
Specific examples of the photoacid generator include "Cyracure UVI-6992", "Cyracure UVI-974" (manufactured by Dow chemical Japan Co., ltd.), "Adeka Optomer SP150", "Adeka Optomer SP152", "Adeka Optomer SP170", "Adeka Optomer SP172" (manufactured by Kyowa Co., ltd.), "IRGACURE250" (manufactured by Ciba SPECIALTY CHEMICALS Co.), "CI-5102", "CI-2855" (manufactured by Sedum Co., ltd.), "SUN AID SI-60L", "SUN AID SI-80L", "SUN AID SI-110L", "SUN AID SI-180L" (manufactured by Santa Classification Co., ltd.), "CPI-100P", "CPI-100A" (manufactured by SAN-APRO Co., ltd.), ")、"WPI-069"、"WPI-113"、"WPI-116"、"WPI-041"、"WPI-044"、"WPI-054"、"WPI-055"、"WPAG-281"、"WPAG-567"、"WPAG-596"( or more and photo-pure).
The thickness of the resin layer 2 is not particularly limited, and is, for example, 10 μm or less, preferably 5 μm or less, more preferably less than 3 μm, and still more preferably less than 2.5 μm. The thinner the resin layer 2 is, the less the amount of the acid generator used for forming the resin layer 2 tends to be. When the amount of the acid generator used is small, even if the resin layer 2 is in direct contact with the polarizer 1, the acid generated by the acid generator is less likely to move from the resin layer 2 to the polarizer 1, and deterioration of the polarizer 1 tends to be suppressed. The thickness of the resin layer 2 is preferably 0.3 μm or more, or may be 0.5 μm or more, from the viewpoint of sufficiently suppressing the permeation of iodine contained in the polarizing plate 1 to the outside.
As described above, the resin layer 2 may be bonded to the polarizer 1 via the adhesive layer or the easy-to-adhere layer. As an adhesive layer for bonding the resin layer 2 to the polarizer 1, for example, an adhesive layer 3 described below is exemplified. The easy-to-adhere layer may be formed of, for example, a resin containing a polymer having a polyester skeleton, a polyether skeleton, a polycarbonate skeleton, a polyurethane skeleton, a silicone system, a polyamide skeleton, a polyimide skeleton, a polyvinyl alcohol skeleton, or the like. The number of the polymers contained in the resin may be 1 or 2 or more. The easy-to-adhere layer may contain additives. Examples of the additives include tackifiers, ultraviolet absorbers, antioxidants, stabilizers such as heat stabilizers, and the like. The thickness of the easy-to-adhere layer is not particularly limited, but is preferably 0.01 to 5. Mu.m, more preferably 0.02 to 2. Mu.m, and still more preferably 0.05 to 1. Mu.m. The easy-to-adhere layer may be a multilayer laminate.
[ Adhesive layer ]
The adhesive layer 3 is a layer containing an adhesive. The material of the adhesive is not particularly limited, and a known material can be used. Examples of the adhesive contained in the adhesive layer 3 include a water-based adhesive and an active energy ray-curable adhesive. As the active energy ray-curable adhesive, for example, an adhesive disclosed in japanese patent application laid-open No. 2019-147865, japanese patent application laid-open No. 2016-177248, or the like can be used.
The thickness of the adhesive layer 3 is not particularly limited, and is, for example, 3.0 μm or less, preferably 0.01 to 3.0 μm, more preferably 0.1 to 2.5 μm, and still more preferably 0.5 to 1.5 μm. When the thickness of the adhesive layer 3 is too small, the cohesive force of the adhesive layer 3 may be insufficient and the peeling force may be lowered. When the thickness of the adhesive layer 3 is too large, if stress is applied to the cross section of the polarizing film 10, peeling may occur in the adhesive layer 3. That is, in the polarizing film 10, peeling failure due to impact may occur.
[ Protective film ]
The protective film 4 is preferably a protective film excellent in transparency, mechanical strength, thermal stability, moisture blocking property, isotropy, and the like. The protective film 4 is typically a transparent protective film. Examples of the material of the protective film 4 include polyester polymers such as polyethylene terephthalate and polyethylene naphthalate; cellulose polymers such as diacetyl cellulose and triacetyl cellulose; a (meth) acrylic polymer such as polymethyl methacrylate; styrene polymers such AS polystyrene and acrylonitrile-styrene copolymer (AS resin); a polycarbonate-based polymer; olefin polymers such as polyethylene, polypropylene and ethylene-propylene copolymer; cyclic olefin polymers such as polynorbornene; vinyl chloride-based polymers; amide polymers such as nylon and aromatic polyamide; imide-based polymers; a sulfone polymer; polyether sulfone-based polymers; polyether-ether-ketone polymers; polyphenylene sulfide-based polymers; a vinyl alcohol polymer; vinylidene chloride polymers; a vinyl butyral polymer; an acrylic polymer; polyoxymethylene polymers; an epoxy polymer; mixtures of these polymers, and the like.
The protective film 4 preferably contains a polymer that functions as a thermoplastic resin among the above polymers. The content of the thermoplastic resin in the protective film 4 is preferably 50 to 100% by weight, more preferably 50 to 99% by weight, still more preferably 60 to 98% by weight, and particularly preferably 70 to 97% by weight. When the content of the thermoplastic resin in the protective film 4 is less than 50% by weight, functions such as high transparency inherent in the thermoplastic resin may not be sufficiently exhibited. The protective film 4 preferably contains triacetyl cellulose (TAC) in the above-described polymer as a main component. The protective film 4 containing TAC tends to have high breaking strength and excellent cracking resistance. The protective film 4 also tends to be low in cost.
The protective film 4 may be a polymer film described in Japanese patent application laid-open No. 2001-343529, international publication No. 01/37007, or the like. Examples of the material of the polymer film include a resin composition containing a thermoplastic resin having a substituted and/or unsubstituted imide group in a side chain and a thermoplastic resin having a substituted and/or unsubstituted phenyl group and a nitrile group in a side chain. Specific examples of the polymer film include a film formed from a resin composition containing an alternating copolymer of isobutylene and N-methylmaleimide and an acrylonitrile-styrene copolymer. The film is obtained, for example, by mixing and extruding a resin composition. Since the film has a small retardation and a small photoelastic coefficient, the film can eliminate the defects such as unevenness caused by the strain of the polarizing film 10. Further, the film has low moisture permeability, and therefore has excellent durability in a humid environment.
The protective film 4 may contain 1 or more additives. Examples of the additives include ultraviolet absorbers, antioxidants, lubricants, plasticizers, mold release agents, anti-coloring agents, flame retardants, nucleating agents, antistatic agents, pigments, colorants, and the like.
The moisture permeability of the protective film 4 is not particularly limited, and may exceed 150 g/(m 2 ·day), or may be 300 g/(m 2 ·day) or more, or may be 500 g/(m 2 ·day) or more. In the polarizing film 10 of the present embodiment, even when the protective film 4 has high moisture permeability, the resin layer 2 can sufficiently suppress the permeation of iodine contained in the polarizing plate 1 to the outside. The upper limit of the moisture permeability of the protective film 4 is not particularly limited, and may be, for example, 5000 g/(m 2. Multidot. Day) or 1000 g/(m 2. Multidot. Day). The protective film 4 containing TAC tends to have high moisture permeability.
The moisture permeability of the protective film 4 can be measured by the following method according to the moisture permeability test (cup method) of Japanese Industrial Standard (JIS) Z0208. First, the protective film 4 was cut to a diameter of 60mm, and a measurement sample was prepared. The measurement sample was then placed in a moisture permeable cup equipped with about 15g of calcium chloride. The moisture permeability test was performed by placing the moisture permeability cup in a thermostat set at a temperature of 40 ℃ and a humidity of 92% rh and allowing the cup to stand for 24 hours. The moisture permeability of the protective film 4 can be determined by measuring the increase in weight of calcium chloride before and after the test.
The moisture permeability of the protective film 4 may be 150 g/(m 2. Day) or less. In this case, the intrusion of moisture in the air into the inside of the polarizing film 10 can be suppressed, and the change in the moisture content of the polarizing film 10 can be suppressed. This can prevent the polarizing film 10 from curling and changing in size during storage or the like. Examples of the material for forming the protective film 4 having low moisture permeability include polyester-based polymers, polycarbonate-based polymers, acrylate-based polymers, amide-based polymers, olefin-based polymers, cyclic olefin-based polymers, (meth) acrylic-based polymers, and mixtures thereof.
The thickness of the protective film 4 is not particularly limited, but is preferably 5 to 100 μm, more preferably 10 to 60 μm, and even more preferably 13 to 40 μm from the viewpoints of strength, handleability, and the like. The thickness of the protective film 4 may be less than 40 μm.
In order to improve the adhesion between the members, the surface of the protective film 4 may be subjected to an easy-to-adhere treatment such as corona treatment or plasma treatment. An easy-to-adhere layer may be disposed on the surface of the protective film 4. As the easy-to-adhere layer, the one described above for the resin layer 2 can be used.
[ Adhesive layer ]
The adhesive layer 5 is a layer containing an adhesive. The material of the binder is not particularly limited, and for example, a material containing a (meth) acrylic polymer, a silicone polymer, a polyester, a polyurethane, a polyamide, a polyether, a fluorine polymer, a rubber polymer, or the like as a base polymer can be used. In particular, an acrylic adhesive containing a (meth) acrylic polymer is excellent in optical transparency, has suitable adhesive properties such as wettability, aggregation and adhesiveness, and is excellent in weather resistance, heat resistance and the like, and therefore is suitable as a material for the adhesive layer 5.
The adhesive layer 5 may be a laminate of a plurality of layers having different compositions. The thickness of the pressure-sensitive adhesive layer 5 is appropriately determined depending on the purpose of use, the adhesive force, etc., and is, for example, 1 to 500. Mu.m, preferably 1 to 200. Mu.m, more preferably 1 to 100. Mu.m. The thickness of the adhesive layer 5 may be 50 μm or less.
The adhesive layer 5 may be attached to the separator before the polarizing film 10 is attached to the image display panel. By the film, contamination of the adhesive layer 5 can be prevented. As the separator, for example, a separator obtained by coating a film such as a plastic film, a rubber sheet, paper, cloth, nonwoven fabric, net, foam sheet, metal foil, or a laminate thereof with a release agent such as silicone, long-chain alkyl, fluorine, or molybdenum sulfide, as necessary, can be used.
[ Other parts ]
The polarizing film 10 may further include other members than the above-described members. The polarizing film 10 may further include a transparent substrate positioned on the viewing side of the resin layer 2, for example. The transparent substrate may be positioned at the outermost side of the polarizing film 10. The transparent substrate is made of glass or polymer, for example. Examples of the polymer constituting the transparent substrate include polyethylene terephthalate, polycycloolefin, and polycarbonate. The thickness of the transparent substrate made of glass is, for example, 0.1mm to 1mm. The thickness of the transparent substrate made of the polymer is, for example, 10 μm to 200 μm.
The transparent substrate is bonded to the resin layer 2 via, for example, an OCA (optical CLEAR ADHESIVE; optically clear adhesive) layer. As the OCA layer, for example, the layer described above for the adhesive layer 5 can be used. The thickness of the OCA layer is preferably 150 μm or less.
The polarizing film 10 may further include an optical film such as a reflection plate, a retardation film, a viewing angle compensation film, and a brightness enhancement film. The retardation film includes, for example, a 1/2 wavelength plate, a 1/4 wavelength plate, and the like. The polarizing film 10 may be disposed on the image display panel side of the polarizing plate 1 (for example, between the pressure-sensitive adhesive layer 5 and the protective film 4), or may be disposed on the viewing side of the polarizing plate 1.
The polarizing film 10 may further include functional layers such as a hard coat layer, an antireflection layer, an anti-blocking layer, a diffusion layer, and an antiglare layer. In the polarizing film 10, the hard coat layer may be disposed on the viewing side of the resin layer 2.
[ Method for producing polarizing film ]
The method for producing the polarizing film 10 includes, for example, a step of polymerizing a monomer M having a value y calculated by the above formula (1) of less than 4.00 to obtain a polymer P. In detail, the polarizing film 10 may be manufactured by the following method. First, the polarizer 1 and the protective film 4 are bonded via the adhesive layer 3. Next, a coating liquid containing the monomer M and a polymerization initiator is prepared. The polymerization initiator is typically an acid generator as described hereinabove for the resin layer 2.
The content of the polymerization initiator in the coating liquid is, for example, 20% by weight or less, preferably 0.01 to 20% by weight, more preferably 0.05 to 10% by weight, and also 0.1 to 5% by weight.
Next, the coating liquid is coated on the polarizing plate 1. Thus, a film (coating film) containing the monomer M and the polymerization initiator can be formed on the polarizing plate 1. Subsequently, the monomer M is polymerized so as to form the resin layer 2 from the coating film. The polymerization of the monomers M can be carried out by known methods. For example, when a photoacid generator is used as a polymerization initiator, the monomer M can be polymerized by irradiating the coating film with active energy rays. Examples of the active energy ray include visible light rays and ultraviolet rays. In the present specification, the resin layer 2 produced by polymerizing the monomer M contained in the coating film is sometimes referred to as a cured resin layer. Next, the pressure-sensitive adhesive layer 5 is bonded to the protective film 4 to obtain the polarizing film 10.
The resin layer 2 can be produced by the following method. First, the monomer M is polymerized to obtain the polymer P. The obtained polymer P was added to a solvent to prepare a coating liquid. Examples of the solvent include organic solvents capable of dissolving or dispersing the polymer P. Next, a coating film is produced by applying a coating liquid to the polarizing plate 1. The resin layer 2 was obtained by drying the coating film.
[ Properties of polarizing film ]
In the polarizing film 10 of the present embodiment, the iodine contained in the polarizing plate 1 can be sufficiently suppressed from penetrating to the outside in a high-temperature and high-humidity environment. That is, the concentration of iodine in the polarizing plate 1 hardly changes in a high-temperature and high-humidity environment. The change in the concentration of iodine in the polarizing plate 1 can be grasped from, for example, the change in the individual transmittance of the polarizing film 10. As an example, when the polarizing film 10 is placed in an atmosphere of 65 ℃ and 90% rh for 8 hours in a state where the polarizing film 10 is bonded to alkali-free glass with the adhesive layer 5 interposed therebetween, the change Δy1 of the individual transmittance of the polarizing film 10 is, for example, 4 or less, preferably 3 or less, more preferably 2 or less, still more preferably 1.85 or less, particularly preferably 1.5 or less, and particularly preferably 1 or less.
The change Δy1 in the individual transmittance can be specifically determined by the following method. First, the individual transmittance Ts1 of the laminate obtained by bonding the polarizing film 10 to alkali-free glass via the adhesive layer 5 was measured. Subsequently, the laminate was left to stand at 65℃under an atmosphere of 90% RH for 8 hours. The individual transmittance Ts2 of the laminate after being left in this atmosphere was measured. The value obtained by subtracting the individual transmittance Ts1 from the individual transmittance Ts2 is regarded as a change Δy1 in the individual transmittance. The individual transmittance of the laminate was a Y value obtained by correcting the visibility of the laminate in a 2-degree field of view (C light source) according to JIS Z8701-1999. The individual transmittance can be measured by using a commercially available spectrophotometer such as DOT-3 manufactured by color technology research in village. The measurement wavelength of the individual transmittance was 380 to 700nm (per 10 nm). The alkali-free glass is a glass substantially free of alkali components (alkali metal oxides), and specifically, the weight ratio of alkali components in the glass is, for example, 1000ppm or less, and further 500ppm or less. The alkali-free glass is, for example, plate-shaped and has a thickness of 0.5mm or more.
The individual transmittance Ts1 is not particularly limited, and is, for example, 42% to 46%, preferably 43% or more, and more preferably 44% or more. The individual transmittance Ts2 is not particularly limited, and is, for example, 42% to 48%, preferably 47% or less, and more preferably 46% or less.
Further, when the polarizing film 10 is left to stand under an atmosphere of 65 ℃ and 90% rh for 24 hours in a state where the polarizing film 10 is bonded to alkali-free glass with the adhesive layer 5 interposed therebetween, the change Δy2 of the individual transmittance of the polarizing film 10 is, for example, 20 or less, preferably 10 or less, more preferably 5 or less, still more preferably 3 or less, and particularly preferably 2 or less.
The change Δy2 in the individual transmittance can be measured by the same method as described for the change Δy1 in the individual transmittance, except that the laminate obtained by bonding the polarizing film 10 to the alkali-free glass via the adhesive layer 5 is left for 24 hours at 65 ℃ in an atmosphere of 90% rh.
(Modification of polarizing film)
Fig. 2 is a schematic cross-sectional view of a polarizing film 11 according to a modification. As shown in fig. 2, in the polarizing film 11 of the present modification, the protective film 4 is located on the viewing side of the resin layer 2, and the protective film 4, the resin layer 2, and the polarizing plate 1 are arranged in this order in the lamination direction. The polarizing film 11 does not include the adhesive layer 3. Except for this, the structure of the polarizing film 11 is the same as that of the polarizing film 10. Therefore, common elements in the polarizing film 10 and the polarizing film 11 are denoted by the same reference numerals, and their description may be omitted. That is, the following descriptions of the embodiments are applicable to each other as long as the descriptions are not technically contradictory. The following embodiments may be combined with each other as long as the embodiments are not technically contradictory.
The resin layer 2 is directly connected to the polarizer 1 and the protective film 4. The polarizing plate 1 and the protective film 4 are bonded via the resin layer 2. However, other layers such as an adhesive layer and an easy-to-adhere layer may be disposed between the resin layer 2 and the polarizer 1 or between the resin layer 2 and the protective film 4. These members may be bonded via an adhesive layer or an easy-to-adhere layer. Examples of the adhesive layer and the easy-to-adhere layer include the layers described above for the polarizing film 10.
The polarizing film 11 may further include a hard coat layer on the viewing side of the protective film 4. The hard coat layer may be located at the outermost side of the polarizing film 11. However, in the case where the polarizing film 11 includes the transparent substrate, the hard coat layer may be provided between the protective film 4 and the transparent substrate.
In the polarizing film 11, both the protective film 4 and the resin layer 2 are located on the viewing side of the polarizing plate 1. In this polarizing film 11, iodine contained in the polarizing plate 1 tends to be more suppressed from penetrating to the outside in a high-temperature and high-humidity environment. As an example, when the polarizing film 11 is placed under an atmosphere of 85 ℃ and 85% rh for 120 hours in a state where the polarizing film 11 is bonded to alkali-free glass with the adhesive layer 5 interposed therebetween, the change Δy3 of the individual transmittance of the polarizing film 11 is, for example, 2 or less, preferably 1.6 or less, more preferably 1.5 or less, still more preferably 1.3 or less, and may be 1.2 or less, or 1 or less.
The change Δy3 in the individual transmittance can be specifically measured by the following method. First, the individual transmittance Ts3 of the laminate obtained by bonding the polarizing film 11 to alkali-free glass via the adhesive layer 5 was measured. Next, the laminate was left to stand at 85 ℃ under an atmosphere of 85% rh for 120 hours. The individual transmittance Ts4 of the laminate after being left in this atmosphere was measured. The value obtained by subtracting the individual transmittance Ts3 from the individual transmittance Ts4 is regarded as a change Δy3 in the individual transmittance.
The individual transmittance Ts3 is not particularly limited, and is, for example, 42% to 46%, preferably 43% or more, and more preferably 44% or more. The individual transmittance Ts4 is not particularly limited, and is, for example, 42% to 48%, preferably 47% or less, and more preferably 46% or less.
In the state where the polarizing film 11 is bonded to alkali-free glass with the pressure-sensitive adhesive layer 5 interposed therebetween, when the polarizing film 11 is left to stand under an atmosphere of 85 ℃ and 85% rh for 240 hours, the change Δy4 of the individual transmittance of the polarizing film 11 is, for example, 1.6 or less, preferably 1.5 or less, more preferably 1.4 or less, still more preferably 1.3 or less, and particularly preferably 1.2 or less.
The change Δy4 in the individual transmittance can be measured by the same method as described above for the change Δy3 in the individual transmittance, except that the laminate obtained by bonding the polarizing film 11 to the alkali-free glass via the adhesive layer 5 is left for 240 hours at 85 ℃ in an atmosphere of 85% rh.
(Another modification of polarizing film)
In the polarizing film 10, the resin layer 2 may be located on the image display panel side described later than the polarizing plate 1. As shown in fig. 3, in the polarizing film 12 of the present modification, the resin layer 2 is located closer to the image display panel than the polarizing plate 1. The structure of the polarizing film 12 is the same as that of the polarizing film 10 except for the position of the resin layer 2.
The resin layer 2 is located between the polarizer 1 and the adhesive layer 3, for example, and directly contacts the polarizer 1 and the adhesive layer 3, respectively. However, other layers such as an adhesive layer and an easy-to-adhere layer may be disposed between the resin layer 2 and the polarizing plate 1. For example, the resin layer 2 may be bonded to the polarizer 1 via an adhesive layer or an easy-to-adhere layer. As the adhesive layer and the easy-to-adhere layer for adhering the resin layer 2 to the polarizing plate 1, those described above for the polarizing film 10 are exemplified. When the resin layer 2 is located closer to the image display panel than the polarizer 1, iodine contained in the polarizer 1 can be prevented from moving to the adhesive layer 5 and transmitting to the outside of the polarizing film 12 through the adhesive layer 5 in a high-temperature and high-humidity environment.
(Still another modification of polarizing film)
The polarizing film 10 may further include other members than the above-described members. As shown in fig. 4, the polarizing film 13 of the present modification includes the protective film (1 st protective film) 4 and the protective film (2 nd protective film) 6. The structure of the polarizing film 13 is the same as that of the polarizing film 10 except for the 2 nd protective film 6.
The 2 nd protective film 6 is located on the viewing side of the polarizing plate 1. The polarizing plate 1 is located, for example, between the 1 st protective film 4 and the 2 nd protective film 6. The 2 nd protective film 6 is located on the viewing side of the resin layer 2, for example, and is located on the outermost side of the polarizing film 13. However, in the case where the polarizing film 13 includes the transparent substrate, the 2 nd protective film 6 may be located between the resin layer 2 and the transparent substrate. The 2 nd protective film 6 is, for example, directly connected to the resin layer 2. However, the 2 nd protective film 6 may be bonded to the resin layer 2 via another layer such as an adhesive layer or a hard coat layer. As an adhesive layer for bonding the 2 nd protective film 6 to the resin layer 2, for example, the layer described above for the adhesive layer 3 is exemplified.
As the 2 nd protective film 6, the protective film described above for the 1 st protective film 4 can be used. The 1 st protective film 4 and the 2 nd protective film 6 may be the same or different from each other.
(Still another modification of polarizing film)
The polarizing film 10 may include 2 or more resin layers 2. As shown in fig. 5, the polarizing film 14 of the present modification includes 2 resin layers 2a and 2b. The structure of the polarizing film 14 is the same as that of the polarizing film 10 except for the resin layer 2b.
In the polarizing film 14, the polarizing plate 1 is located between 2 resin layers 2a and 2 b. Specifically, the resin layer 2b is located closer to the image display panel than the polarizer 1 (for example, between the polarizer 1 and the adhesive layer 3). When the polarizing plate 1 is disposed between the 2 resin layers 2a and 2b, the polarizing film 14 tends to further suppress the permeation of iodine contained in the polarizing plate 1 to the outside.
The resin layer 2b may be directly connected to the polarizing plate 1. However, other layers such as an adhesive layer and an easy-to-adhere layer may be disposed between the resin layer 2b and the polarizing plate 1. For example, the resin layer 2b may be bonded to the polarizer 1 via an adhesive layer or an easy-to-adhere layer. As the adhesive layer and the easy-to-adhere layer for adhering the resin layer 2b to the polarizing plate 1, those described above for the polarizing film 10 are exemplified.
(Embodiment of image display device)
As shown in fig. 6, the image display device 100 of the present embodiment includes a polarizing film 10 and an image display panel 20. In the image display device 100, the polarizing film 11, 12, 13, or 14 may be used instead of the polarizing film 10. In the image display device 100, the polarizing film 10 is attached to the image display panel 20 via the adhesive layer 5, for example. The image display panel 20 includes an organic EL display panel, a liquid crystal display panel, and the like, and is preferably an organic EL display panel.
The image display device 100 further includes an illumination system (not shown), for example. As an example, the polarizing film 10, the image display panel 20, and the illumination system are arranged in this order, and the polarizing film 10 is positioned on the most visible side. The illumination system has, for example, a backlight or a reflection plate, and irradiates light to the image display panel 20.
Examples
Hereinafter, the present invention will be described in more detail with reference to examples. The present invention is not limited to the embodiments shown below.
Example 1
(Production of polarizing film A)
< Thin polarizer >
First, a laminate having a PVA layer of 9 μm in thickness formed on an amorphous polyethylene terephthalate (PET) substrate was prepared. The laminate was subjected to air-assisted stretching at a stretching temperature of 130 ℃ to produce a stretched laminate. Next, the stretched laminate was dyed with iodine to obtain a colored laminate. Further, the colored laminate was stretched at a stretching temperature of 65 degrees in an aqueous boric acid solution to obtain a laminate a in which the amorphous PET substrate and the PVA layer were integrally stretched. In the laminate a, the total stretching ratio was 5.94 times, and the thickness of the PVA layer was 5 μm. The PVA molecules of the PVA layer formed on the amorphous PET substrate were highly oriented by the 2-stage stretching. In addition, iodine adsorbed by dyeing is highly oriented in one direction as a multi-iodide complex. The PVA layer contained in the laminate a functions as a thin polarizing plate.
< Transparent protective film >
First, a resin composed of an imidized methyl methacrylate-styrene copolymer (imidized MS resin) was produced by the method described in production example 1 of japanese patent application laid-open No. 2010-284840. Next, 100 parts by weight of an imidized MS resin and 0.62 parts by weight of a triazine ultraviolet absorber (trade name: T-712, manufactured by ADEKA Co., ltd.) were mixed at 220℃using a 2-screw mixer to prepare resin pellets. The obtained resin pellets were dried at 100℃under 100.5kPa for 12 hours. Next, using a single screw extruder, resin pellets were extruded from a T die at a die temperature of 270℃to thereby produce a film having a thickness of 160. Mu.m. Further, the film was stretched in the transport direction thereof under an atmosphere at 150℃to adjust the thickness to 80. Mu.m. Next, after an easy-adhesive containing an aqueous urethane resin was applied to the film, the film was stretched in an atmosphere at 150 ℃ in a direction orthogonal to the conveying direction, thereby obtaining a transparent protective film I having a thickness of 40 μm. The moisture permeability of the transparent protective film I was 58 g/(m 2. Multidot. Day) at 40℃and 92% RH.
< Active energy ray-curable adhesive composition >
12 Parts by weight of hydroxyethylacrylamide (manufactured by KJ Chemicals Co., ltd.: HEAA), 24 parts by weight of 2-hydroxy-3-phenoxypropyl acrylate (manufactured by east Asia Synthesis Co., ltd.: ARONIX M-5700), 12 parts by weight of neopentyl glycol hydroxypivalate acrylate adduct (manufactured by Kyowa Co., ltd.: LIGHT ACRYLATE HPP-A), 38 parts by weight of 1, 9-nonanediol diacrylate (manufactured by Kyowa Co., ltd.: LIGHT ACRYLATE 1,9ND-A), 10 parts by weight of acrylic acid oligomer (manufactured by east Asia Synthesis Co., ltd.: ARUFON UP-1190), 3 parts by weight of 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropane-1-one (manufactured by IGM RESINS Co., ltd.: OMNIRAD 907) and 2 parts by weight of 2, 4-diethylthioxanthone (manufactured by Japanese chemical Co., ltd.: KAYA CURE DETX-S) were mixed and stirred for 3 hours to obtain an active energy ray curable adhesive composition.
< Laminate comprising transparent protective film, adhesive layer and thin polarizer >
The active energy ray-curable adhesive composition was applied to the bonding surface of the transparent protective film I using an MCD coater (cell shape: honeycomb, gravure roll line number: 1000 pieces/inch, rotational speed 140%/relative line speed) manufactured by fuji mechanical company. The thickness of the obtained coating film was 0.7. Mu.m. Next, the transparent protective film I was bonded to the laminate a including the PVA layer using a roll press. At this time, the coating film was brought into contact with the PVA layer. The linear speed of the roller press was 25m/min. Subsequently, the obtained laminate was irradiated with active energy rays from the transparent protective film side. As the active energy ray, a visible light ray emitted from a visible light ray irradiation device (LIGHT HAMMER manufactured by Fusion UVSystems corporation) was used. The light source of the visible ray irradiation device is a gallium-sealed metal halide lamp. In the visible ray irradiation apparatus, a V bulb is used as a bulb. The peak illuminance of the outgoing light from the visible ray irradiation device was 1600mW/cm 2. The cumulative irradiation amount of the emitted light from the visible ray irradiation device in the wavelength range of 380nm to 440nm was 1000mJ/cm 2. The illuminance of the light emitted from the visible light irradiation device was measured using a Sola-Check system manufactured by Solatell corporation. The active energy ray-curable adhesive composition in the coating film is cured by irradiation of the laminate with active energy rays. Next, this laminate was subjected to hot air drying at 70 ℃ for 3 minutes to obtain a laminate b including the transparent protective film I, the adhesive layer, and the thin polarizing plate.
< Resin layer >
First, 60 parts by weight of 3',6' -bis (ethylene oxide-2-ylmethoxy) spiro [ fluorene-9, 9' -xanthene ] (trade name: TBIS-RXG, manufactured by the chemical industry Co., ltd.), 20 parts by weight of bis [ (3-ethyl-3-oxetanyl) methyl ] ether (trade name: OXT-221, manufactured by the east Asian Synthesis Co., ltd.), 20 parts by weight of 4-t-butylphenyl glycidyl ether (trade name: denacol EX-146, manufactured by the Nagase ChemteX Co., ltd.), and 10 parts by weight of photoacid generator (trade name: CPI-100P) were mixed and stirred at 25℃for 1 hour to prepare a coating liquid.
Next, the amorphous PET substrate adjacent to the PVA layer was removed from the laminate b, and the surface of the exposed PVA layer was corona-treated. Next, the above-mentioned coating liquid was applied to the exposed PVA layer by using an MCD coater (cell shape: honeycomb, gravure roll line number: 250 pieces/inch, rotational speed 160%/relative line speed) manufactured by Fuji mechanical Co. The thickness of the obtained coating film was 2.0. Mu.m. Next, a COP film (trade name: ZF14, thickness: 25 μm) was bonded to the PVA layer using a roll press. At this time, the coating film is brought into contact with the COP film. The linear speed of the roller press was 25m/min. Subsequently, the obtained laminate was irradiated with active energy rays from the COP film side. As the active energy ray, ultraviolet rays emitted from an irradiation device (LIGHT HAMMER manufactured by Fusion UV Systems corporation) were used. In the irradiation device, an H bulb is used as a bulb. The peak illuminance of the outgoing light from the irradiation device was 200mW/cm 2. In the wavelength range of 330nm to 390nm, the cumulative irradiation amount of the emitted light from the irradiation device was 600mJ/cm 2. The illuminance and the cumulative irradiation amount of the emitted light from the irradiation device were measured using a UV radiometer POWERPUCK II manufactured by EIT corporation. By irradiating the laminate with active energy rays, the monomers in the coating film polymerize. The coating film is cured by polymerization of the monomer. Subsequently, the laminate was dried with hot air at 70℃for 3 minutes, and then allowed to stand at 25℃for 24 hours. Thereby, a resin layer is formed. The COP film was peeled from the laminate to obtain a laminate c including the transparent protective film I, the adhesive layer, the thin polarizer, and the resin layer.
Next, the surface of the transparent protective film I is subjected to corona treatment. An adhesive layer having a thickness of 20 μm was bonded to the surface. The adhesive layer is composed of an acrylic adhesive. Thus, a polarizing film a including a resin layer, a polarizing plate, an adhesive layer, a transparent protective film I, and an adhesive layer in this order was obtained.
(Production of polarizing film B)
First, the contact surface of the transparent protective film I is subjected to corona treatment. The coating liquid was applied to the bonding surface of the transparent protective film I using an MCD coater (cell shape: honeycomb, gravure roll line number: 250 pieces/inch, rotational speed 160%/relative line speed) manufactured by fuji mechanical company. The thickness of the obtained coating film was 2.0. Mu.m. Next, the transparent protective film I was bonded to the laminate a including the PVA layer using a roll press. At this time, the coating film was brought into contact with the PVA layer. The linear speed of the roller press was 25m/min. Subsequently, the obtained laminate was irradiated with active energy rays from the thin polarizer side. The above ultraviolet rays are used for the polarizing film a as active energy rays. By irradiating the laminate with active energy rays, the monomers in the coating film polymerize. The coating film is cured by polymerization of the monomer. Subsequently, the laminate was dried with hot air at 70℃for 3 minutes, and then allowed to stand at 25℃for 24 hours. Thus, a resin layer was formed, and a laminate d including the transparent protective film I, the resin layer, and the thin polarizing plate was obtained.
Next, the amorphous PET substrate adjacent to the PVA layer was removed from the obtained laminate d, and the surface of the exposed PVA layer was subjected to corona treatment. An adhesive layer having a thickness of 20 μm was bonded to the surface. The adhesive layer is composed of an acrylic adhesive. Thus, a polarizing film B having a transparent protective film I, a resin layer, a polarizing plate, and an adhesive layer in this order was obtained.
(Production of polarizing film C)
< Transparent protective film with hard coating >
First, a solution (trade name: unidic-806, manufactured by DIC corporation, solid content concentration: 80% by weight) obtained by dissolving an ultraviolet curable resin monomer or oligomer containing urethane acrylate as a main component in butyl acetate was prepared. For 100 parts by weight of the solid content of the solution, 5 parts by weight of a photopolymerization initiator (trade name: IRGACURE907, manufactured by BASF corporation) and 0.1 part by weight of a leveling agent (trade name: GRANDIC PC4100, manufactured by DIC corporation) were used. Further, cyclopentanone and propylene glycol monomethyl ether were reacted at 45:55 was added to the solution so that the concentration of the solid component in the solution was adjusted to 36 wt%. Thus, a coating liquid for forming a hard coat layer was prepared.
Next, as the transparent protective film, a triacetyl cellulose (TAC) film (trade name: TJ25UL, manufactured by Fuji film Co., ltd., raw material: triacetyl cellulose-based polymer, thickness: 25 μm, moisture permeability: 931 g/(m 2. Multidot. Day)) was used. A coating liquid for forming a hard coat layer is coated on the transparent protective film to form a coating film. The thickness of the coating film was adjusted so that the thickness of the hard coat layer after curing became 7. Mu.m. Then, the coating film was dried at 90℃for 1 minute, and then, an ultraviolet ray having a cumulative light amount of 300mJ/cm 2 was irradiated to the coating film using a high-pressure mercury lamp. Thus, the coating film was cured to form a hard coat layer (HC) having a thickness of 7. Mu.m, thereby obtaining a transparent protective film II with HC. The transparent protective film II with HC had a moisture permeability of 420 g/(m 2. Multidot. Day) at 40℃and 92% RH.
A polarizing film C was produced in the same manner as the polarizing film B except that the transparent protective film II with HC was used instead of the transparent protective film I. The polarizing film C includes, in order, a hard coat layer, a transparent protective film (TAC film), a resin layer, a polarizing plate, and an adhesive layer.
Examples 2 to 11 and comparative examples 1 to 6
Polarizing films a to C were produced in examples 2 to 11 and comparative examples 1 to 6 by the same method as in example 1, except that the monomers contained in the coating liquid for forming the resin layer were changed to the monomers described in table 1.
< Value of y calculated from formula (1) >)
The value of x 1～x7 was determined by the above method for the monomers contained in the coating liquids for forming the resin layers used in examples and comparative examples. The dispersion term δD (MPa 1/2) in the Hansen solubility parameter of the monomer and the common logarithmic value LogS of the solubility S (g/100 g) of the monomer in water at 25℃were calculated using HSPIP (version 5). Molecular modeling for calculating dipole moment of monomers and the like was performed using MATERIALS STUDIO (manufactured by BIOVIA, ver.8.0.0.843) and WebMO (ver.19.0.009 e). Further, using the value of x 1～x7, the value of y is calculated based on equation (1).
< Change in individual transmittance DeltaY1 >
For the polarizing films a of examples and comparative examples, the change Δy1 in individual transmittance was measured by the following method. First, the polarizing film a was bonded to alkali-free glass via an adhesive layer. For the obtained laminate, the individual transmittance Ts1 was measured. The individual transmittance Ts1 was measured by using a spectral transmittance measuring instrument (Dot-3 c manufactured by color technology research, village) with an integrating sphere. Subsequently, the laminate was left to stand at 65℃under an atmosphere of 90% RH for 8 hours. The individual transmittance Ts2 of the laminate after being placed in this atmosphere was measured using the above-mentioned spectral transmittance measuring device. The change Δy1 in individual transmittance is calculated by subtracting the individual transmittance Ts1 from the individual transmittance Ts2.
< Change in individual transmittance DeltaY2 >
The change Δy2 in individual transmittance was measured by the same method as described above for the change Δy1 in individual transmittance except that the laminate obtained by bonding the polarizing film a to the alkali-free glass via the adhesive layer was left to stand for 24 hours at 65 ℃ in an atmosphere of 90% rh.
< Change in individual transmittance DeltaY3 >
For the polarizing films B and C of examples and comparative examples, the change Δy3 in individual transmittance was measured by the following method. First, polarizing films B and C were bonded to alkali-free glass via an adhesive layer. For the obtained laminate, the individual transmittance Ts3 was measured. The individual transmittance Ts3 was measured by using a spectral transmittance measuring instrument (Dot-3 c manufactured by color technology research, village) with an integrating sphere. Next, the laminate was left to stand at 85 ℃ under an atmosphere of 85% rh for 120 hours. The individual transmittance Ts4 of the laminate after being placed in this atmosphere was measured using the above-mentioned spectral transmittance measuring device. The change Δy3 in individual transmittance is calculated by subtracting the individual transmittance Ts3 from the individual transmittance Ts4.
< Change in individual transmittance DeltaY4 >
The change Δy4 in individual transmittance was measured by the same method as that described above for the change Δy3 in individual transmittance, except that the laminate obtained by bonding the polarizing film B to the alkali-free glass via the adhesive layer was left to stand for 240 hours at 85 ℃ in an atmosphere of 85% rh.
< Evaluation of cracking >
For the polarizing films B and C of examples and comparative examples, thermal shock test was performed by the following method. First, an adhesive layer is attached to the surface of the transparent protective film I (or the transparent protective film II with HC) of the polarizing film. Next, the obtained laminate was cut into a shape shown in fig. 7 using a CO 2 Laser (manufactured by Comnet, product name: laser Pro-SPIRIT), and a measurement sample 15 was produced. Specifically, a measurement sample 15 was prepared by cutting a part of a long laminate having a length of 50mm×a width of 150mm in a V-shape from one long side. At this time, the angle between the long side of the laminate before cutting and the cut surface was adjusted to 14 °. In the long laminate, the absorption axis direction matches the direction in which the short side extends. The irradiation conditions of the CO 2 laser were as follows.
Irradiation conditions
Wavelength: 10.6 μm
Laser output: 30W
Oscillation mode: pulse oscillation
Diameter of laser: 70 μm
Laser irradiation surface: protective film side
Next, the measurement sample 15 was bonded to alkali-free glass having a thickness of 0.5mm using an adhesive layer disposed on the surface of the transparent protective film side. In this state, a thermal shock test was performed by applying a thermal shock at-40 to 80℃200 times to the measurement sample 15. Each thermal shock was carried out for 30 minutes. After the thermal shock test, it was confirmed whether or not cracking occurred in the V-shaped portion (region a in fig. 7) of the measurement sample 15, which penetrated through the measurement sample 15. The thermal shock test was repeated 10 times, and the case where cracking occurred was rated as x, and the case where no cracking occurred was rated as o.
The evaluation results of each of the produced polarizing films are shown in table 1 below.
TABLE 1
The abbreviations in table 1 are as follows.
TBIS-RXG:3',6' -bis (ethylene oxide-2-ylmethoxy) spiro [ fluorene-9, 9' -xanthene ] (trade name: TBIS-RXG manufactured by Tiangang chemical industry Co., ltd.)
OXT-221: bis [ (3-ethyl-3-oxetanyl) methyl ] ether (trade name: OXT-221, manufactured by east Asia Synthesis Co., ltd.)
EX-146: 4-tert-butylphenyl glycidyl ether (trade name: denacol EX-146, manufactured by Nagase Chemtex Co., ltd.)
JER-834: bisphenol A type epoxy resin (epoxy equivalent 230-270 g/eq, trade name: jER-834, manufactured by Mitsubishi chemical Co., ltd.)
TBIS-GG:9, 9-bis {4- [2- (oxiran-2-ylmethoxy) ethoxy ] phenyl } -9H-fluorene (trade name: TBIS-GG manufactured by Tiangang chemical Co., ltd.)
THI-DE: dicyclo-nonadiene diepoxide (trade name: THI-DE, manufactured by ENEOS Co., ltd.)
ED-505: trimethylolpropane triglycidyl ether (trade name: ADEKA GLYCIROL ED-505, manufactured by ADEKA Co., ltd.)
EP-4088S: dicyclopentadiene type epoxy resin (trade name: EP-4088S, manufactured by ADEKA Co., ltd.)
BATG:2, 2-bis (3-glycidyl-4-glycidoxyphenyl) propane (trade name: shofree BATG, manufactured by Zhaowa electric company)
OXBP:4,4' - (3-Ethyloxybutan-3-ylmethoxymethyl) biphenyl (trade name: ETERNACOLL-OXBP, manufactured by Yu Kogyo Xingzhi Co., ltd.)
DE-102: epoxy Compound having a norbornane ring (trade name: DE-102, manufactured by ENEOS Co., ltd.)
DE-103: tricyclopentadiene diepoxide (trade name: DE-103, manufactured by ENEOS Co., ltd.)
ED-523T: neopentyl glycol diglycidyl ether (trade name: ADEKA GLYCIROL ED-523T manufactured by ADEKA Co., ltd.)
EX-313: glycerol polyglycidyl ether (trade name: denacol EX-313, manufactured by Nagase ChemteX Co., ltd.)
EX-212:1, 6-hexanediol diglycidyl ether (trade name: denacol EX-212, manufactured by NagaseChemteX Co., ltd.)
EX-832: polyethylene glycol diglycidyl ether (epoxy equivalent 284g/eq, manufactured by NagaseChemteX company, trade name: denacol EX-832)
EX-821: polyethylene glycol diglycidyl ether (epoxy equivalent 185g/eq, manufactured by NagaseChemteX company, trade name: denacol EX-821)
As is clear from table 1, in the polarizing films a to C of examples in which the value of Y calculated from the formula (1) was less than 4.00, the change Δy of the individual transmittance was small and the permeation of iodine to the outside in a high-temperature and high-humidity environment was sufficiently suppressed, respectively, as compared with the polarizing films a to C of comparative examples. Further, the polarizing film C having a TAC film as a transparent protective film tends to be excellent in crack resistance as compared with the polarizing film B.
Industrial applicability
The polarizing film of the present invention can be used for mobile displays such as mobile phones, smart phones, and notebook computers; the display device is suitable for vehicle displays such as a panel for a navigation device, an instrument panel, a mirror display and the like.
Claims (18)
1. A polarizing film is provided with:
An iodine-containing polarizer;
A resin layer comprising a polymer having at least 1 selected from the group consisting of a structural unit U1 derived from a compound A1 containing an epoxy group and a structural unit U2 derived from a compound A2 containing an oxetanyl group,
The value of y of the polarizing film calculated by the following formula (1) is less than 4.00,
y＝(-3.71)x1+(-3.94)x2+(0.299)x3+(0.226)x4+(-1.05)
x5+(0.517)x6+(0.769)x7+71.81(1)
In the formula (1), x 1 is a dispersion term δd (MPa 1 /2) in hansen solubility parameters of monomers used to form the polymer,
X 2 is the x component (debye) of the dipole moment of the monomer used to form the polymer,
X 3 is the interaction energy (kcal/mol) of the monomer with water molecules for forming the polymer,
X 4 is the usual log value log of the solubility (g/100 g) of the monomers used to form the polymer in water at 25 ℃,
X 5 is the dipole moment (debye) of the monomer used to form the polymer,
X 6 is the z component (debye) in the dipole moment of the monomer used to form the polymer,
X 7 is the number of hydrogen bond acceptors in the monomers used to form the polymer.
2. The polarizing film according to claim 1, wherein the value of y is 2.30 or less.
3. The polarizing film according to claim 1, wherein the polymer comprises both the structural unit U1 and the structural unit U2.
4. The polarizing film according to claim 1, wherein a total value of a content of the structural unit U1 and a content of the structural unit U2 in the polymer is 70 wt% or more.
5. The polarizing film according to claim 1, wherein the compound A1 comprises a ring structure other than an epoxy group.
6. The polarizing film according to claim 1, wherein the compound A1 comprises at least 1 selected from the group consisting of an aliphatic ring and an aromatic ring.
7. The polarizing film according to claim 1, wherein the resin layer comprises an acid generator and/or a decomposition product of the acid generator.
8. The polarizing film according to claim 1, wherein the resin layer is directly in contact with the polarizing plate.
9. The polarizing film of claim 1, wherein the resin layer has a thickness of less than 3 μm.
10. The polarizing film according to claim 1, wherein the thickness of the polarizing plate is 1 μm or more and less than 7 μm.
11. The polarizing film according to claim 1, wherein the polarizing plate comprises polyvinyl alcohol as a main component.
12. The polarizing film according to claim 1, further comprising a protective film.
13. The polarizing film according to claim 12, wherein the protective film, the resin layer, and the polarizing plate are sequentially arranged in a lamination direction.
14. The polarizing film according to claim 12, wherein the protective film has a moisture permeability of 300 g/(m 2 -day) or more.
15. The polarizing film according to claim 12, wherein the protective film contains triacetyl cellulose as a main component.
16. The polarizing film of claim 12, wherein the protective film has a thickness of less than 40 μιη.
17. An image display device is provided with:
the polarizing film of any one of claims 1 to 16; and
An image display panel.
18. A method for producing a polarizing film comprising an iodine-containing polarizing plate and a resin layer comprising a polymer having at least 1 selected from the group consisting of a structural unit U1 derived from an epoxy group-containing compound A1 and a structural unit U2 derived from an oxetanyl group-containing compound A2,
The method comprises a step of polymerizing a monomer having a value of y calculated by the following formula (1) of less than 4.00 to obtain the polymer,
y＝(-3.71)x1+(-3.94)x2+(0.299)x3+(0.226)x4+(-1.05)
x5+(0.517)x6+(0.769)x7+71.81(1)
In the formula (1), x 1 is a dispersion term δD (MPa 1/2) in Hansen solubility parameters of the monomer,
X 2 is the x component (debye) of the dipole moment of the monomer,
X 3 is the interaction energy (kcal/mol) of the monomer with water molecules,
X 4 is the usual log value of the solubility of the monomers in water at 25 ℃ (g/100 g),
X 5 is the dipole moment (debye) of the monomer,
X 6 is the z component (debye) of the dipole moment of the monomer,
X 7 is the number of hydrogen bond acceptors in the monomer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021157499 | 2021-09-28 | ||
| JP2021-157499 | 2021-09-28 | ||
| PCT/JP2022/031958 WO2023053798A1 (en) | 2021-09-28 | 2022-08-24 | Polarization film, image display device, and method for producing polarization film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117999501A true CN117999501A (en) | 2024-05-07 |
Family
ID=85780618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280063382.5A Pending CN117999501A (en) | 2021-09-28 | 2022-08-24 | Polarizing film, image display device, and method for manufacturing polarizing film |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN117999501A (en) |
| TW (1) | TW202313345A (en) |
| WO (1) | WO2023053798A1 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101845081B1 (en) * | 2014-11-28 | 2018-04-04 | 삼성에스디아이 주식회사 | Composition for window film, flexible window film prepared using the same and flexible display apparatus comprising the same |
| CN109564316A (en) * | 2016-08-03 | 2019-04-02 | 住友化学株式会社 | Stacked film |
| CN109564318A (en) * | 2016-08-03 | 2019-04-02 | 住友化学株式会社 | Stacked film |
| WO2018147284A1 (en) * | 2017-02-08 | 2018-08-16 | 日東電工株式会社 | Adhesive composition for polarizing films, polarizing film, optical film and image display device |
| JP7027003B2 (en) * | 2017-09-21 | 2022-03-01 | 日東電工株式会社 | Laminated optical film and its manufacturing method, and image display device |
| JP7219137B2 (en) * | 2019-03-28 | 2023-02-07 | 日東電工株式会社 | Method for manufacturing polarizing film |
| KR102643436B1 (en) * | 2019-09-30 | 2024-03-06 | 닛토덴코 가부시키가이샤 | Polarizer with phase contrast layer and image display device using the same |
| CN115298585A (en) * | 2020-03-27 | 2022-11-04 | 日东电工株式会社 | Polarizing film, image display device, and method for manufacturing polarizing film |
-
2022
- 2022-08-24 CN CN202280063382.5A patent/CN117999501A/en active Pending
- 2022-08-24 WO PCT/JP2022/031958 patent/WO2023053798A1/en active Application Filing
- 2022-08-29 TW TW111132517A patent/TW202313345A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| TW202313345A (en) | 2023-04-01 |
| WO2023053798A1 (en) | 2023-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107664788B (en) | Optical laminate | |
| CN110325887B (en) | Optical laminate | |
| KR20180013769A (en) | Optical laminate | |
| KR101355028B1 (en) | Adhesive for polarizing plate and polarizing plate comprising the same | |
| CN106415341B (en) | Adhesive-attached polarizing plate and liquid crystal display device | |
| KR101630938B1 (en) | Polarizing plate, preparing method for polarizing plate and image display apparatus comprising the same | |
| CN106569297B (en) | Polarizing plate | |
| KR20100030586A (en) | Polarizing plate and its production method | |
| TW201609401A (en) | Laminate optical film production method | |
| JP2020173458A (en) | Polarizing plate | |
| JP5949123B2 (en) | Polarizer | |
| US20200142116A1 (en) | Polarizing plate for light emitting displays and light emitting display comprising the same | |
| WO2021192615A1 (en) | Polarization film, image display device and polarization film production method | |
| JP7382264B2 (en) | Polarizing film and image display device | |
| TWI730005B (en) | Polarizing plate | |
| CN117999501A (en) | Polarizing film, image display device, and method for manufacturing polarizing film | |
| JP2022104558A (en) | Polarizer | |
| CN106569296B (en) | Polarizing plate | |
| WO2022145369A1 (en) | Polarizing plate | |
| JP2022110684A (en) | optical laminate | |
| TW202309564A (en) | Polarizing film and image display device | |
| JP2020126276A (en) | Polarizing plate | |
| CN116761861A (en) | polarizing plate | |
| KR20200143043A (en) | Polarizing plate and image display apparatus comprising same | |
| KR20190082504A (en) | Method for preparing of polarizer protecting film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination |