WO2022137768A1 - 積層体およびその利用 - Google Patents
積層体およびその利用 Download PDFInfo
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- WO2022137768A1 WO2022137768A1 PCT/JP2021/039079 JP2021039079W WO2022137768A1 WO 2022137768 A1 WO2022137768 A1 WO 2022137768A1 JP 2021039079 W JP2021039079 W JP 2021039079W WO 2022137768 A1 WO2022137768 A1 WO 2022137768A1
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- WO
- WIPO (PCT)
- Prior art keywords
- acrylic resin
- resin film
- laminate
- graft copolymer
- less
- Prior art date
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- 239000004925 Acrylic resin Substances 0.000 claims abstract description 188
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 184
- 238000012360 testing method Methods 0.000 claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 210000002268 wool Anatomy 0.000 claims abstract description 23
- 239000002245 particle Substances 0.000 claims description 166
- 229920000578 graft copolymer Polymers 0.000 claims description 122
- 238000000034 method Methods 0.000 claims description 75
- 229920001971 elastomer Polymers 0.000 claims description 71
- 239000000806 elastomer Substances 0.000 claims description 53
- 238000004519 manufacturing process Methods 0.000 claims description 53
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 36
- 238000000465 moulding Methods 0.000 claims description 32
- 230000009477 glass transition Effects 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 17
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 12
- 239000003999 initiator Substances 0.000 claims description 7
- 230000001678 irradiating effect Effects 0.000 claims description 6
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 claims description 6
- 239000011342 resin composition Substances 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 abstract description 8
- 239000010410 layer Substances 0.000 description 140
- 239000000203 mixture Substances 0.000 description 85
- 229920005989 resin Polymers 0.000 description 78
- 239000011347 resin Substances 0.000 description 78
- 239000000178 monomer Substances 0.000 description 73
- 238000006116 polymerization reaction Methods 0.000 description 51
- -1 vinylidene halide Chemical class 0.000 description 43
- 125000005396 acrylic acid ester group Chemical group 0.000 description 26
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 24
- 239000003795 chemical substances by application Substances 0.000 description 22
- 239000000047 product Substances 0.000 description 22
- 238000006243 chemical reaction Methods 0.000 description 21
- 229920000642 polymer Polymers 0.000 description 21
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 21
- 229920002554 vinyl polymer Polymers 0.000 description 21
- 239000004816 latex Substances 0.000 description 19
- 229920000126 latex Polymers 0.000 description 19
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical group COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 18
- 238000001723 curing Methods 0.000 description 18
- 239000005060 rubber Substances 0.000 description 18
- 238000000576 coating method Methods 0.000 description 17
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 16
- 239000000126 substance Substances 0.000 description 16
- 125000004432 carbon atom Chemical group C* 0.000 description 15
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 14
- 239000012986 chain transfer agent Substances 0.000 description 13
- 238000002156 mixing Methods 0.000 description 13
- 230000008901 benefit Effects 0.000 description 12
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 12
- 239000002994 raw material Substances 0.000 description 12
- 230000002087 whitening effect Effects 0.000 description 12
- 238000005452 bending Methods 0.000 description 11
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 10
- 239000003054 catalyst Substances 0.000 description 10
- 238000001914 filtration Methods 0.000 description 10
- 239000002346 layers by function Substances 0.000 description 10
- 239000003960 organic solvent Substances 0.000 description 10
- 239000002904 solvent Substances 0.000 description 10
- 125000000217 alkyl group Chemical group 0.000 description 9
- 238000001035 drying Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 9
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 8
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 8
- 239000000654 additive Substances 0.000 description 8
- 230000007423 decrease Effects 0.000 description 8
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 8
- KNCYXPMJDCCGSJ-UHFFFAOYSA-N piperidine-2,6-dione Chemical group O=C1CCCC(=O)N1 KNCYXPMJDCCGSJ-UHFFFAOYSA-N 0.000 description 8
- FBCQUCJYYPMKRO-UHFFFAOYSA-N prop-2-enyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC=C FBCQUCJYYPMKRO-UHFFFAOYSA-N 0.000 description 8
- 239000007787 solid Substances 0.000 description 8
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 7
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 7
- 125000000524 functional group Chemical group 0.000 description 7
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 7
- 230000006872 improvement Effects 0.000 description 7
- 239000012948 isocyanate Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 239000003973 paint Substances 0.000 description 7
- 125000001424 substituent group Chemical group 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical group N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 238000010128 melt processing Methods 0.000 description 6
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Substances OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 239000004431 polycarbonate resin Substances 0.000 description 6
- 229920005668 polycarbonate resin Polymers 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 5
- CFVWNXQPGQOHRJ-UHFFFAOYSA-N 2-methylpropyl prop-2-enoate Chemical compound CC(C)COC(=O)C=C CFVWNXQPGQOHRJ-UHFFFAOYSA-N 0.000 description 5
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 150000008360 acrylonitriles Chemical class 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 5
- 150000002513 isocyanates Chemical class 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 150000002978 peroxides Chemical class 0.000 description 5
- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 description 5
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 5
- 229920005992 thermoplastic resin Polymers 0.000 description 5
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 4
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 4
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 4
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 4
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- 230000003373 anti-fouling effect Effects 0.000 description 4
- AOJOEFVRHOZDFN-UHFFFAOYSA-N benzyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC1=CC=CC=C1 AOJOEFVRHOZDFN-UHFFFAOYSA-N 0.000 description 4
- 239000001110 calcium chloride Substances 0.000 description 4
- 229910001628 calcium chloride Inorganic materials 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007720 emulsion polymerization reaction Methods 0.000 description 4
- 125000003700 epoxy group Chemical group 0.000 description 4
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 4
- 239000011790 ferrous sulphate Substances 0.000 description 4
- 235000003891 ferrous sulphate Nutrition 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 4
- 230000001771 impaired effect Effects 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 4
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 4
- 125000003566 oxetanyl group Chemical group 0.000 description 4
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical compound CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 description 4
- 229910000077 silane Inorganic materials 0.000 description 4
- 238000000807 solvent casting Methods 0.000 description 4
- 150000005846 sugar alcohols Polymers 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- ODIGIKRIUKFKHP-UHFFFAOYSA-N (n-propan-2-yloxycarbonylanilino) acetate Chemical compound CC(C)OC(=O)N(OC(C)=O)C1=CC=CC=C1 ODIGIKRIUKFKHP-UHFFFAOYSA-N 0.000 description 3
- 150000003923 2,5-pyrrolediones Chemical group 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 3
- RUMACXVDVNRZJZ-UHFFFAOYSA-N 2-methylpropyl 2-methylprop-2-enoate Chemical compound CC(C)COC(=O)C(C)=C RUMACXVDVNRZJZ-UHFFFAOYSA-N 0.000 description 3
- CEXQWAAGPPNOQF-UHFFFAOYSA-N 2-phenoxyethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOC1=CC=CC=C1 CEXQWAAGPPNOQF-UHFFFAOYSA-N 0.000 description 3
- FRIBMENBGGCKPD-UHFFFAOYSA-N 3-(2,3-dimethoxyphenyl)prop-2-enal Chemical compound COC1=CC=CC(C=CC=O)=C1OC FRIBMENBGGCKPD-UHFFFAOYSA-N 0.000 description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 150000005215 alkyl ethers Chemical class 0.000 description 3
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 3
- 235000006708 antioxidants Nutrition 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- KBLWLMPSVYBVDK-UHFFFAOYSA-N cyclohexyl prop-2-enoate Chemical compound C=CC(=O)OC1CCCCC1 KBLWLMPSVYBVDK-UHFFFAOYSA-N 0.000 description 3
- 238000005034 decoration Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- YHAIUSTWZPMYGG-UHFFFAOYSA-L disodium;2,2-dioctyl-3-sulfobutanedioate Chemical compound [Na+].[Na+].CCCCCCCCC(C([O-])=O)(C(C([O-])=O)S(O)(=O)=O)CCCCCCCC YHAIUSTWZPMYGG-UHFFFAOYSA-L 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000003995 emulsifying agent Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 3
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000000113 methacrylic resin Substances 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- ANISOHQJBAQUQP-UHFFFAOYSA-N octyl prop-2-enoate Chemical compound CCCCCCCCOC(=O)C=C ANISOHQJBAQUQP-UHFFFAOYSA-N 0.000 description 3
- 150000001451 organic peroxides Chemical class 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- QIWKUEJZZCOPFV-UHFFFAOYSA-N phenyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC1=CC=CC=C1 QIWKUEJZZCOPFV-UHFFFAOYSA-N 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 229920001230 polyarylate Polymers 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 229920001225 polyester resin Polymers 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 3
- QTECDUFMBMSHKR-UHFFFAOYSA-N prop-2-enyl prop-2-enoate Chemical compound C=CCOC(=O)C=C QTECDUFMBMSHKR-UHFFFAOYSA-N 0.000 description 3
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 3
- 238000010526 radical polymerization reaction Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- SJMYWORNLPSJQO-UHFFFAOYSA-N tert-butyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC(C)(C)C SJMYWORNLPSJQO-UHFFFAOYSA-N 0.000 description 3
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 2
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 2
- 239000012956 1-hydroxycyclohexylphenyl-ketone Substances 0.000 description 2
- BJELTSYBAHKXRW-UHFFFAOYSA-N 2,4,6-triallyloxy-1,3,5-triazine Chemical compound C=CCOC1=NC(OCC=C)=NC(OCC=C)=N1 BJELTSYBAHKXRW-UHFFFAOYSA-N 0.000 description 2
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 2
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- 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 2
- DPBJAVGHACCNRL-UHFFFAOYSA-N 2-(dimethylamino)ethyl prop-2-enoate Chemical compound CN(C)CCOC(=O)C=C DPBJAVGHACCNRL-UHFFFAOYSA-N 0.000 description 2
- XFCMNSHQOZQILR-UHFFFAOYSA-N 2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOC(=O)C(C)=C XFCMNSHQOZQILR-UHFFFAOYSA-N 0.000 description 2
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- KZCOBXFFBQJQHH-UHFFFAOYSA-N octane-1-thiol Chemical compound CCCCCCCCS KZCOBXFFBQJQHH-UHFFFAOYSA-N 0.000 description 1
- WWZKQHOCKIZLMA-UHFFFAOYSA-M octanoate Chemical compound CCCCCCCC([O-])=O WWZKQHOCKIZLMA-UHFFFAOYSA-M 0.000 description 1
- NZIDBRBFGPQCRY-UHFFFAOYSA-N octyl 2-methylprop-2-enoate Chemical compound CCCCCCCCOC(=O)C(C)=C NZIDBRBFGPQCRY-UHFFFAOYSA-N 0.000 description 1
- 229940065472 octyl acrylate Drugs 0.000 description 1
- 239000011242 organic-inorganic particle Substances 0.000 description 1
- 101710108497 p-hydroxybenzoate hydroxylase Proteins 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920006287 phenoxy resin Polymers 0.000 description 1
- 239000013034 phenoxy resin Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001020 poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) Polymers 0.000 description 1
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- 229920000647 polyepoxide Polymers 0.000 description 1
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- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920000166 polytrimethylene carbonate Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 229940096992 potassium oleate Drugs 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- MLICVSDCCDDWMD-KVVVOXFISA-M potassium;(z)-octadec-9-enoate Chemical compound [K+].CCCCCCCC\C=C/CCCCCCCC([O-])=O MLICVSDCCDDWMD-KVVVOXFISA-M 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- SOGFHWHHBILCSX-UHFFFAOYSA-J prop-2-enoate silicon(4+) Chemical compound [Si+4].[O-]C(=O)C=C.[O-]C(=O)C=C.[O-]C(=O)C=C.[O-]C(=O)C=C SOGFHWHHBILCSX-UHFFFAOYSA-J 0.000 description 1
- HXHCOXPZCUFAJI-UHFFFAOYSA-N prop-2-enoic acid;styrene Chemical compound OC(=O)C=C.C=CC1=CC=CC=C1 HXHCOXPZCUFAJI-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- BYBCMKKXISPQGR-UHFFFAOYSA-N pyrrole-2,5-dione;styrene Chemical compound O=C1NC(=O)C=C1.C=CC1=CC=CC=C1 BYBCMKKXISPQGR-UHFFFAOYSA-N 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000007870 radical polymerization initiator Substances 0.000 description 1
- 239000012966 redox initiator Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000009938 salting Methods 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- KSAVQLQVUXSOCR-UHFFFAOYSA-M sodium lauroyl sarcosinate Chemical compound [Na+].CCCCCCCCCCCC(=O)N(C)CC([O-])=O KSAVQLQVUXSOCR-UHFFFAOYSA-M 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011145 styrene acrylonitrile resin Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical compound OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2333/10—Homopolymers or copolymers of methacrylic acid esters
- C08J2333/12—Homopolymers or copolymers of methyl methacrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
- C08J2475/14—Polyurethanes having carbon-to-carbon unsaturated bonds
Definitions
- the present invention relates to a laminate containing an acrylic resin film as a base material.
- Acrylic resin films made by processing and molding acrylic resin compositions containing elastic bodies are used and developed for various purposes by taking advantage of their excellent properties such as transparency, hardness, weather resistance, and secondary moldability. Has been done.
- Acrylic resin films are used, for example, for decoration / protection as a paint substitute for laminating film on interior / exterior parts of automobiles, and for decoration / protection of exteriors of products such as portable electronic devices, personal computers, and home appliances. And the use as a building material.
- Patent Document 1 describes a specific methacrylic acid ester resin (A), a four-stage structure polymer having an average particle size of rubber particles of 0.2 to 0.4 ⁇ m.
- An acrylic resin film obtained by forming (D) into a film, a laminated product containing the acrylic resin film, and the like are described.
- Patent Document 2 describes both a graft copolymer particle (A) having a multilayer structure having an average particle diameter of 20 nm or more and 150 nm or less and a graft having a multilayer structure larger than the average particle diameter of the graft copolymer particles (A).
- An acrylic resin film containing the polymer particles (B), a laminated film containing the acrylic resin film, and the like are described.
- Patent Documents 1 and 2 Although the techniques described in Patent Documents 1 and 2 are excellent, there is room for further improvement in terms of moldability and wear resistance.
- an object of the present invention is to provide a laminate containing an acrylic resin film, which is excellent in moldability and abrasion resistance.
- the present inventors have formed by using an acrylic resin film having specific physical characteristics in the laminated body and a specific (for example, ultraviolet curable) hard coat layer. For the first time, it has been found that a laminated body having excellent properties and abrasion resistance can be obtained. Further, they have found for the first time that the laminated body can be obtained by devising the manufacturing process of the laminated body, and have completed the present invention.
- one aspect of the present invention is a laminated body including an acrylic resin film and a hard coat layer laminated on at least one surface of the acrylic resin film, and the acrylic resin film has a glass transition temperature ( Tg) is 140 ° C. or lower and the breaking point elongation at 120 ° C. is 200% or more, and the laminate has a crack elongation at 120 ° C. of 50% or more and 50 g / cm.
- Tg glass transition temperature
- this laminated body having a ⁇ haze of 1.0% or less in a steel wool wear test in 2 or 5 round trips.
- one aspect of the present invention is a method for manufacturing a laminated body including an acrylic resin film and a hard coat layer laminated on at least one surface of the acrylic resin film, and the acrylic resin film is placed on a cooling roll.
- a step of irradiating the hard coat layer coated on at least one surface of the resin film with UV to cure the hard coat layer is included, and the UV integrated light amount of the UV irradiation is 150 to 500 mJ / cm 2 , and the cooling roll has a UV irradiation amount of 150 to 500 mJ / cm 2.
- the temperature is 25 to 70 ° C.
- the acrylic resin film has a glass transition temperature of 140 ° C. or lower, the breaking point elongation at 120 ° C.
- a method for manufacturing a laminate wherein the crack elongation in the film is 50% or more, and the ⁇ haze of the steel wool wear test at 50 g / cm 2 , 5 reciprocations is 1.0% or less (hereinafter, “main laminate”). It is referred to as "a method for manufacturing a body”).
- one aspect of the present invention is a method for manufacturing a molded body (hereinafter, "manufacturing of the present molded body", which comprises a step of shaping the laminated body shown below at a molding temperature of 140 ° C. or lower at the time of preform. Method ”): A laminate including an acrylic resin film and a hard coat layer laminated on at least one surface of the acrylic resin film.
- the acrylic resin film has a glass transition temperature of 140 ° C. or lower and 120.
- the break point elongation at ° C. is 200% or more
- the crack elongation at 120 ° C. is 50% or more
- the steel wool wear test ⁇ at 50 g / cm 2 , 5 reciprocations.
- a film for an in-vehicle display it is a film that can be formed into a curved surface and has clear qualities such as abrasion resistance (also referred to as scratch resistance and scratch resistance), antireflection, and reliability. Is required.
- a film used for such an application it has a multilayer film in which a polycarbonate resin and an acrylic resin are laminated, and further has functionality such as scratch resistance, antiglare property, antireflection property, and antifouling property.
- a functional film having a functional layer formed by coating or the like is widely used.
- the acrylic resin film has excellent properties such as transparency, hardness, weather resistance, excellent optical properties with little phase difference even during stretching, and secondary formability. Therefore, the present inventors have studied the application of an acrylic resin film to an in-vehicle display.
- the present inventors tried to increase the strength of the hard coat layer from the viewpoint of enhancing the wear resistance in the laminate containing the acrylic resin film and the hard coat layer. As a result, although it was easy to increase the strength of the hardcoat layer itself, if the strength of the hardcoat layer is increased, the hardcoat layer may crack during molding and molding may not be possible. I found a problem.
- the present inventors have succeeded in obtaining the following findings as a result of diligent studies on a laminate capable of achieving both moldability and wear resistance.
- Excellent moldability is ensured by using an acrylic resin film having a glass transition temperature (Tg) of 140 ° C. or lower and a breaking point elongation at 120 ° C. of 200% or more.
- Tg glass transition temperature
- the UV integrated light intensity is controlled to 150 to 500 mJ / cm 2
- the cooling roll temperature during UV irradiation is controlled to 25 to 70 ° C (preferably 40 to 70 ° C).
- the wear resistance of the laminate is enhanced.
- this laminate can simultaneously achieve excellent moldability and wear resistance. This can contribute to the achievement of Sustainable Development Goals (SDGs) such as Goal 12 “Securing Sustainable Consumption Production”.
- SDGs Sustainable Development Goals
- the present laminate includes an acrylic resin film and a hard coat layer laminated on at least one side of the acrylic resin film.
- the acrylic resin film is composed of an acrylic resin and an acrylic resin composition containing graft copolymer particles containing a rubber component.
- the graft copolymer particles containing the rubber component it is preferable to include the graft copolymer particles (A) having an average particle diameter of 20 nm or more and 200 nm or less, and in addition to the graft copolymer particles (A), the graft co-polymer particles are used.
- the graft copolymer particles (B) having a larger average particle diameter than the polymer particles (A) may be included.
- the graft copolymer particles (A) are dispersed in the acrylic resin or the matrix containing the acrylic resin and other components, or the graft copolymer particles (A).
- the graft copolymer particles (B) are dispersed.
- acrylic resin used for the acrylic resin film conventionally known acrylic resins can be used.
- the methyl methacrylate unit is 50% by mass or more and 100% by mass or less, and the other constituent units are 0% by mass or more and 50% by mass. It is preferable to contain 20% by mass or more and 100% by mass or less of the thermoplastic acrylic polymer composed of 20% by mass or less.
- Examples of other structural units include structural units derived from acrylic acid, acrylic acid derivatives, methacrylic acid, methacrylic acid derivatives, aromatic vinyl derivatives, vinyl cyanide derivatives, vinylidene halide and the like.
- the other structural units contained in the acrylic resin may be one kind or a combination of two or more kinds.
- acrylic acid derivative examples include methyl acrylate, ethyl acrylate, n-propyl acrylate, n-butyl acrylate, isobutyl acrylate, t-butyl acrylate, cyclohexyl acrylate, 2-hydroxyethyl acrylate, and 2 acrylic acid.
- -Acrylic acid esters such as phenoxyethyl, benzyl acrylate, 2- (N, N-dimethylamino) ethyl acrylate, and glycidyl acrylate can be mentioned.
- methacrylic acid derivative examples include ethyl methacrylate, n-propyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, t-butyl methacrylate, phenyl methacrylate, benzyl methacrylate, cyclohexyl methacrylate, and 2-phenoxyethyl methacrylate.
- Methacrylic acid esters such as isobornyl methacrylate, dicyclopentenyl methacrylate, glycidyl methacrylate, and adamantyl methacrylate.
- aromatic vinyl derivative examples include styrene, vinyltoluene, ⁇ -methylstyrene and the like.
- vinyl cyanide derivative examples include acrylonitrile and methacrylonitrile.
- halogenated vinylidene examples include vinylidene chloride and vinylidene fluoride.
- a structural unit having a specific structure with respect to the acrylic resin may be introduced by copolymerization, functional group modification, modification, or the like.
- specific structures include, for example, glutarimide structures as shown in JP-A-62-89705, JP-A-02-178310, WO2005 / 54311, etc., JP-A-2004-168882, and JP-A-2004-16882.
- Glutaric acid obtained by thermally condensing and cyclizing a lactone ring structure as shown in JP-A-2006-171464 and the like (meth) acrylic acid unit as shown in JP-A-2004-307834.
- Examples thereof include an anhydride structure, a maleic anhydride structure as shown in JP-A-5-119217, and an N-substituted maleimide structure and an unsubstituted maleimide structure as shown in WO2009 / 84541.
- anhydride structure a maleic anhydride structure as shown in JP-A-5-119217
- an N-substituted maleimide structure a maleimide structure and an unsubstituted maleimide structure as shown in WO2009 / 84541.
- the method for producing the acrylic resin is not particularly limited, and for example, known polymerization methods such as suspension polymerization method, bulk polymerization method, solution polymerization method, emulsion polymerization method, and dispersion polymerization method can be applied. Further, any of a known radical polymerization method, living radical polymerization method, anion polymerization method, and cationic polymerization method can be applied.
- the acrylic resin film preferably contains the graft copolymer particles (A) as the graft copolymer particles containing the rubber component, and is added to the graft copolymer particles (A) as necessary. Further, the graft copolymer particles (B) may be contained.
- the graft copolymer particles (A) have a core-shell structure (multilayer structure) including a crosslinked elastomer (A1) which is a rubber component and a graft polymer layer (A2) located on the surface layer side of the crosslinked elastomer (A1). Is preferable.
- the crosslinked elastomer (A1) may be a known crosslinked elastomer.
- the crosslinked elastomer (A1) is an acrylic acid ester-based crosslinked elastomer (a crosslinked elastomer composed of a polymer containing an acrylic acid ester as a main component).
- the particles of the acrylic acid ester-based crosslinked elastomer (A1) may have a concentric spherical multilayer structure having a hard or semi-hard crosslinked resin layer inside the crosslinked elastomer layer.
- a hard or semi-hard crosslinked resin layer include hard crosslinked methacrylic resin particles as shown in Japanese Patent Publication No. 55-27576 and the like, and methyl methacrylate-acrylic acid as shown in JP-A-4-270751.
- Examples thereof include semi-hard crosslinked particles made of ester-styrene, and crosslinked rubber particles having a high degree of crosslinkage.
- the graft copolymer particles (A) have a core-shell structure formed by graft-polymerizing the graft polymer layer (A2) in the presence of the particles of the above-mentioned acrylic acid ester-based crosslinked elastomer (A1). preferable.
- the average particle size of the graft copolymer particles (A) is 20 nm or more and 200 nm or less, more preferably 50 nm or more and 150 nm or less, and particularly preferably 50 nm or more and 120 nm or less.
- the average particle size of the graft copolymer particles (A) When the average particle size of the graft copolymer particles (A) is too small, the impact resistance and bending crack resistance of the acrylic resin film tend to decrease. When the average particle size of the graft copolymer particles (A) is excessive, the transparency of the acrylic resin film tends to deteriorate and whitening due to bending tends to occur.
- the acrylic acid ester-based crosslinked elastomer (A1) can be copolymerized with an acrylic acid ester, another vinyl-based monomer that can be optionally copolymerized with an acrylic acid ester, and an acrylic acid ester, and can be copolymerized with an acrylic acid ester per molecule.
- Crosslinked elastomer particles obtained by polymerizing a monomer mixture (a-1) containing a polyfunctional monomer having two or more non-conjugated double bonds can be preferably used.
- Acrylic acid esters, other vinyl-based monomers, and polyfunctional monomers may be all mixed and polymerized in one step. Further, for the purpose of adjusting the toughness, whitening resistance, etc. of the acrylic resin film, the composition of the acrylic acid ester, other vinyl-based monomer, and the polyfunctional monomer is appropriately changed or the same.
- the acrylic acid ester, the other vinyl-based monomer, and the polyfunctional monomer may be polymerized in two or more stages while maintaining the composition.
- acrylic acid ester an aliphatic ester of acrylic acid is preferable, an acrylic acid alkyl ester is more preferable, and the number of carbon atoms of the alkyl group is more preferable, because it is excellent in polymerizable property, inexpensive, and gives a polymer having a low Tg.
- Acrylic acid alkyl esters having a value of 1 or more and 22 or less can be particularly preferably used.
- preferable acrylic acid alkyl esters include, for example, methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, isobutyl acrylate, 2-ethylhexyl acrylate, n-octyl acrylate, and isobornyl acrylate. , Cyclohexyl acrylate, dodecyl acrylate, stearyl acrylate, heptadecyl acrylate, octadecyl acrylate and the like. These may be used alone or in combination of two or more.
- the amount of the acrylic acid ester is preferably 50% by mass or more, more preferably 70% by mass or more, and most preferably 80% by mass or more in 100% by mass of the monomer mixture (a-1). preferable.
- the amount of the acrylic acid ester is 50% by mass or more, the impact resistance of the acrylic resin film and the elongation at the time of tensile breakage are good, and cracks are less likely to occur during the secondary molding.
- Examples of other vinyl-based monomers include methyl methacrylate, ethyl methacrylate, propyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, t-butyl methacrylate, phenyl methacrylate, benzyl methacrylate and methacrylic acid.
- Methacrylic acid esters such as cyclohexyl, phenoxyethyl methacrylate, isobornyl methacrylate, and dicyclopentenyl methacrylate; vinyl halides such as vinyl chloride and vinyl bromide; vinyl cyanide derivatives such as acrylonitrile and methacrylic acid; formic acid.
- Vinyl esters such as vinyl, vinyl acetate, and vinyl propionate; aromatic vinyl derivatives such as styrene, vinyltoluene, and ⁇ -methylstyrene; vinylidene chlorides such as vinylidene chloride and vinylidene fluoride; acrylic acid; sodium acrylic acid. , And salts of acrylic acids such as calcium acrylate; acrylics such as ⁇ -hydroxyethyl acrylate, phenoxyethyl acrylate, benzyl acrylate, dimethylaminoethyl acrylate, glycidyl acrylate, acrylamide, and N-methacrylic acrylamide.
- Methacrylic Acid Methacrylic Acid Salts such as Sodium Methacrylic Acid and Calcium methacrylate
- Methacrylic Acid Derivatives such as Methacrylic Acid, ⁇ -Hydroxyethyl Methacrylate, Dimethylaminoethyl Methacrylate, and Glycidyl Methacrylate
- Maleic Anhydrous N-alkylmaleimide, methacrylic acid derivatives such as N-phenylmaleimide and the like can be mentioned.
- One of these may be used alone, or two or more thereof may be used in combination.
- one or more selected from the group consisting of methacrylic acid esters and aromatic vinyl derivatives is particularly preferable from the viewpoint of weather resistance and transparency.
- the amount of the other vinyl-based monomer is preferably 0% by mass or more and 49.9% by mass or less, and 0% by mass or more and 30% by mass or less in 100% by mass of the monomer mixture (a-1). It is more preferable, and it is most preferable that it is 0% by mass or more and 20% by mass or less.
- the amount of other vinyl-based monomers exceeds 49.9% by mass, the impact resistance of the acrylic resin film tends to decrease, the elongation at tensile breakage decreases, and cracks easily occur during secondary molding. In some cases.
- polyfunctional monomer those usually used as a cross-linking agent and / or a graft crossover agent may be used.
- examples of the polyfunctional monomer include allyl methacrylate, allyl acrylate, triallyl cyanurate, triallyl isocyanurate, diallyl phthalate, diallyl maleate, divinyl adipate, divinyl benzene, ethylene glycol dimethacrylate, and propylene glycol dimethacrylate.
- Diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, trimethyllol propanetrimethacrylate, polyethylene glycol dimethacrylate, dipropylene glycol dimethacrylate and the like can be used.
- One of these polyfunctional monomers may be used alone, or two or more thereof may be used in combination.
- those having a function as a graft cross-linking agent improve the number of graft bonds of the graft polymer layer (A2) described later with respect to the crosslinked elastomer (A1), and as a result, the graft copolymer is used. It is more preferable because it provides good dispersibility of the polymer (A) in the acrylic resin, improves crack resistance against tensile and bending deformation, and reduces stress whitening.
- polyfunctional monomer having the function of such a graft crossing agent those having an allyl group such as allyl methacrylate, allyl acrylate, triallyl cyanurate, triallyl isocyanurate, diallyl phthalate, and diallyl maleate are preferable. , Allyl methacrylate, allyl acrylate and the like are particularly preferable.
- the amount of the polyfunctional monomer is preferably 0.1% by mass or more and 10% by mass or less, and 1.0% by mass or more and 4% by mass or less in 100% by mass of the monomer mixture (a-1). It is more preferable to have. As long as the blending amount of the polyfunctional monomer is within such a range, it is preferable from the viewpoint of bending crack resistance and bending whitening resistance of the acrylic resin film, and fluidity of the resin during molding.
- the amount of the polyfunctional monomer is adjusted to the inside and the surface of the crosslinked elastomer (A1) for the purpose of increasing the graft coating efficiency of the graft polymer layer (A2) described later. It may be changed in the vicinity. Specifically, as shown in Japanese Patent No. 1460364 and Japanese Patent No. 1786959, a polyfunctional monomer having a function as a graft copolymer in the vicinity of the surface of the crosslinked elastomer (A1).
- the coating of the graft copolymer particles (A) with the graft polymer layer is improved, the dispersibility in the acrylic resin is improved, and the graft copolymer particles (A) and acrylic are improved. It is possible to suppress a decrease in crack resistance due to peeling of the resin interface. Further, since sufficient coating can be obtained with a relatively small amount of the graft polymer layer (A2), the graft copolymer particles (A) for introducing a predetermined amount of the crosslinked elastomer (A1) into the acrylic resin composition. ) Can be reduced, and therefore the melt viscosity of the acrylic resin composition can be reduced, and the melt processability of the acrylic resin film, the improvement of the film processing accuracy, the improvement of the surface hardness, and the like can be expected.
- the molecular weight and the crosslink density of the acrylic acid ester-based crosslinked elastomer (A1) are controlled, and the double bond terminal of the polymer associated with the disproportionation termination reaction during polymerization is added.
- a chain transfer agent may be added for the purpose of controlling thermal stability and the like by reducing the amount.
- the chain transfer agent can be selected and used from those usually used for radical polymerization.
- chain transfer agent examples include monofunctional or polyfunctional mercaptan compounds having 2 to 20 carbon atoms such as n-octyl mercaptan, n-dodecyl mercaptan, and t-dodecyl mercaptan, mercapto acids, thiophenols, and tetrachloride. Phenol or a mixture thereof and the like are preferable.
- the amount of the chain transfer agent added is preferably 0 parts by mass or more and 1.0 part by mass or less, and more preferably 0 parts by mass or more and 0 parts by mass with respect to 100 parts by mass of the total amount of the monomer mixture (a-1). .2 parts by mass or less.
- the particles of the crosslinked elastomer (A1) may be a single layer made of the above-mentioned acrylic acid ester-based crosslinked elastomer (A1), or two or more layers made of the above acrylic acid ester-based crosslinked elastomer (A1). It may have a multilayer structure including, or may have an acrylic acid ester-based crosslinked elastomer (A1) in at least one layer of the multilayer particles including a hard or semi-hard crosslinked resin layer.
- Examples of the monomer constituting the hard or semi-hard crosslinked resin layer include methacrylic acid esters such as methyl methacrylate, ethyl methacrylate, butyl methacrylate, benzyl methacrylate, and phenoxyethyl methacrylate, methyl acrylate, and ethyl acrylate. , Acrylic acid alkyl esters such as propyl acrylate, n-butyl acrylate, isobutyl acrylate, t-butyl acrylate, -2-ethylhexyl acrylate, and n-octyl acrylate, styrene, and aromatics such as ⁇ -methylstyrene. Examples thereof include group vinyl derivatives, vinyl cyanide derivatives such as acrylonitrile, maleic acid derivatives such as maleic anhydride and maleimides, and polyfunctional monomers having two or more non-conjugated double bonds per molecule.
- one or more selected from the group consisting of methyl methacrylate, butyl methacrylate, butyl acrylate, ethyl acrylate, styrene, acrylonitrile and the like is particularly preferable.
- the polyfunctional monomer the same one used for the polymerization of the crosslinked elastomer (A1) layer of the acrylic acid ester type can be used.
- a chain transfer agent is used for the purpose of controlling the crosslink density and controlling the thermal stability by reducing the double bond terminal of the polymer. It may be used together.
- the same chain transfer agent as the polymerization of the acrylic acid ester-based crosslinked elastomer (A1) layer can be used.
- the amount of the chain transfer agent added is preferably 0 parts by mass or more and 2 parts by mass or less, and more preferably 0 parts by mass or more and 0.5 parts by mass with respect to 100 parts by mass of the total amount of the hard or semi-hard crosslinked resin layer. It is less than a part.
- the graft copolymer particles (A) When the graft copolymer particles (A) have a two-layer structure of the crosslinked elastomer particles (A1) which are core particles and the graft polymer layer (A2), the graft copolymer particles (A) are typically. In the presence of crosslinked elastomer particles (A1), 50% by mass or more and 100% by mass or less of the methacrylic acid ester and 0% by mass or more and 50% by mass or less of other vinyl-based monomers copolymerizable with the methacrylic acid ester. It can be obtained by graft-copolymerizing the containing monomer mixture (a-2) to form a graft polymer layer (A2).
- the amount of methacrylic acid ester in the monomer mixture (a-2) reduces the toughness of the coating film due to ensuring compatibility with the acrylic resin as a matrix and impregnating the acrylic resin film with a solvent. From the viewpoint of preventing whitening and cracking due to stretching during molding, it is preferably 50% by mass or more, more preferably 70% by mass or more, and further preferably 90% by mass or more.
- the graft polymer layer (A2) preferably has 70% by mass or more and 99% by mass or less of the methacrylic acid alkyl ester and the number of carbon atoms of the alkyl group in the presence of 5 parts by mass or more and 90 parts by mass or less of the crosslinked elastomer particles (A1). 2 or more acrylic acid alkyl esters 10 parts by mass or more and 95 parts by mass or more of a monomer mixture containing 0.5% by mass or more and 30% by mass or less of other vinyl-based monomers and 0% by mass or more and 19% by mass or less of other vinyl-based monomers. It is obtained by graft-copolymerizing less than a part by mass in at least one step or more. However, it is assumed that the total amount of the crosslinked elastomer particles (A1) and the monomer mixture (a-2) satisfies 100 parts by mass.
- examples of the methacrylic acid ester include methyl methacrylate, ethyl methacrylate, propyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, t-butyl methacrylate, hexyl methacrylate and methacrylic acid.
- examples thereof include methacrylic acid alkyl esters such as cyclohexyl, 2-ethylhexyl methacrylate, octyl methacrylate, phenyl methacrylate, and benzyl methacrylate. Of these, a methacrylic acid alkyl ester having an alkyl group having 1 to 4 carbon atoms is preferable.
- an acrylic acid alkyl ester having an alkyl group having 2 or more carbon atoms can be used as the other vinyl-based monomer.
- Acrylic acid alkyl esters having two or more carbon atoms in the alkyl group include ethyl acrylate, propyl acrylate, n-butyl acrylate, isobutyl acrylate, t-butyl acrylate, hexyl acrylate, cyclohexyl acrylate, and acrylic.
- One or more selected from the group consisting of octyl acrylate, dodecyl acrylate, stearyl acrylate and the like is preferable, and it is selected from the group consisting of ethyl acrylate, n-butyl acrylate, isobutyl acrylate, and t-butyl acrylate.
- One or more is more preferable, and n-butyl acrylate is particularly preferable.
- vinyl-based monomers that can be used in the monomer mixture (a-2) include aromatic vinyl derivatives such as styrene and its nuclear substituents, vinyl cyanide derivatives such as acrylonitrile, methacrylic acid and its derivatives. Examples thereof include acrylic acid and its derivatives, N-substituted maleimides, maleic anhydride, methacrylic acid, acrylamide and the like.
- the monomer mixture (a-2) preferably contains a reactive ultraviolet absorber as another vinyl-based monomer. That is, it is preferable that the graft polymer layer (A2) contains a structural unit derived from the reactive ultraviolet absorber. When the monomer mixture (a-2) contains a reactive ultraviolet absorber, it is easy to obtain an acrylic resin film having good weather resistance and chemical resistance.
- the reactive ultraviolet absorber a known reactive ultraviolet absorber can be used and is not particularly limited. From the viewpoint of moldability and weather resistance of the acrylic resin film, the reactive ultraviolet absorber is preferably a compound represented by the following general formula (1).
- X is a hydrogen atom or a halogen atom
- R 1 is a hydrogen atom, a methyl group, or a t-alkyl group having 4 or more and 6 or less carbon atoms
- R 2 is linear. Alternatively, it is a branched alkylene group having 2 or more and 10 or less carbon atoms
- R3 is a hydrogen atom or a methyl group.
- Specific examples of the reactive ultraviolet absorber represented by the general formula (1) include 2- (2'-hydroxy-5'-(meth) acryloyloxyethylphenyl) -2H-benzotriazoles.
- 2- (2'-hydroxy-5'-acryloyloxyethylphenyl) -2H-benzotriazole 2- (2'-hydroxy-5'-methacryloyloxyethylphenyl-2H-benzotriazole, 2- (2'-Hydroxy-5'-methacryloyloxyethylphenyl) -5-chloro-2H-benzotriazole, 2- (2'-hydroxy-5'-methacryloyloxypropylphenyl) -2H-benzotriazole, 2- Examples thereof include (2'-hydroxy-5'-methacryloyloxyethyl-3'-t-butylphenyl) -2H-benzotriazole, and 2- (2'-hydroxy-5' is preferable from the viewpoint of cost and handleability.
- -Methacryloxyethylphenyl) -2H-benzotriazole is used.
- the content of the structural unit derived from the reactive ultraviolet absorber in the graft polymer layer (A2) is preferably 0.01% by mass or more and 5% by mass or less, preferably 0.1% by mass or more and 3% by mass or less. It is more preferable to have.
- the graft copolymer particles (A) especially in the graft copolymerization of the crosslinked elastomer particles (A1), for example, the monomer mixture (a-2) in the presence of the acrylic acid ester-based crosslinked elastomer particles (A1).
- a polymer component (free polymer) that is not graft-bonded to the acrylic acid ester-based crosslinked elastomer particles (A1) may be generated.
- a free polymer can be used as a component of a part or all of the acrylic resin constituting the matrix phase of the acrylic resin composition and the acrylic resin film.
- the molecular weight of the polymer is controlled, the graft ratio to the crosslinked elastomer (A1), the amount of the free polymer not bonded to the crosslinked elastomer (A1), and the polymerization.
- a chain transfer agent may be added for the purpose of controlling thermal stability and the like by reducing the double-bonded ends of the polymer due to the disproportionation termination reaction at the time.
- a chain transfer agent similar to the chain transfer agent that can be used for the polymerization of the crosslinked elastomer (A1) can be used.
- the amount of the chain transfer agent used is 0 parts by mass or more and 2 parts by mass or less, preferably 0 parts by mass or more and 0.5 parts by mass or less, based on 100 parts by mass of the total amount of the monomer mixture (a-2).
- the graft ratio of the monomer mixture (a-2) to the crosslinked elastomer particles (A1) is preferably 5% or more and 250% or less, more preferably 10% or more and 200% or less, and further preferably 20% or more and 150% or less.
- the graft ratio is less than 5%, the bending whitening resistance of the acrylic resin film is lowered, the transparency is lowered, the elongation at the time of tensile fracture is lowered, and cracks are likely to occur during secondary molding. Tend to become.
- the graft ratio exceeds 250%, the melt viscosity of the acrylic resin composition tends to increase during film molding, and the moldability of the acrylic resin film tends to decrease.
- the average particle diameter d (nm) of the crosslinked elastomer particles (A1) in the acrylic resin film and the amount w (mass%) of the polyfunctional monomer used in the acrylic acid ester-based crosslinked elastomer have a relational expression: It is preferable to satisfy 0.015d ⁇ w ⁇ 0.06d, and more preferably 0.02d ⁇ w ⁇ 0.05d.
- the amount of the polyfunctional monomer is within the range of the above relational expression, the elongation of the acrylic resin film during secondary molding is unlikely to decrease, cracks are unlikely to occur during molding and cutting, and the acrylic resin film is transparent.
- the graft copolymer particles (B) used as needed also include the crosslinked elastomer (B1) which is a rubber component, like the graft copolymer particles (A).
- the graft copolymer particles (B) typically include, like the graft copolymer particles (A), a graft polymer layer (B2) located on the surface side of the crosslinked elastomer (B1). That is, the graft copolymer particles (B) preferably include a crosslinked elastomer (B1) and a graft polymer layer (B2).
- the graft copolymer particles (B) are almost the same as the graft copolymer particles (A) in terms of raw materials, production method, etc., except that the average particle size is larger than that of the graft copolymer particles (A). It is also good.
- the particles of the acrylic acid ester-based crosslinked elastomer (B1) have a concentric spherical multilayer structure having a hard or semi-hard crosslinked resin layer inside the crosslinked elastomer layer. Examples of such a hard or semi-hard crosslinked resin layer include hard crosslinked methacrylic resin particles as shown in Japanese Patent Publication No. 55-27576, and Japanese Patent Laid-Open No. 4-270751 and WO2014 / 41803.
- Examples thereof include crosslinked particles having a semi-hard layer made of a methyl methacrylate-acrylic acid ester-styrene copolymer or the like.
- a hard or semi-hard crosslinked resin layer By introducing such a hard or semi-hard crosslinked resin layer, the transparency, bending whitening resistance, and folding resistance of the graft copolymer particles (B) having a larger particle diameter than the graft copolymer particles (A) are obtained. Bending crackability and the like can be improved.
- the average particle size of the graft copolymer particles (B) is preferably 150 nm or more and 400 nm or less, and more preferably 200 nm or more and 350 nm or less.
- the average particle size of the graft copolymer particles (B) is larger than the average particle size of the graft copolymer particles (A).
- the graft copolymer particles (B) having a large average particle size more effectively induce plastic deformation (claise) in the acrylic resin phase around the graft copolymer particles against the action of an external force on the acrylic resin material. do. Therefore, the graft copolymer particles (B) are extremely excellent in the effect of imparting impact resistance and crack resistance to the acrylic resin material.
- the graft copolymer particles (B) are inferior to the graft copolymer particles (A) in bending whitening resistance, solvent whitening resistance, and the like.
- a soft component for the acrylic resin film can be obtained.
- the total content is not lowered to reduce the surface hardness of the acrylic resin film, and the whitening property when an external stress is applied to the acrylic resin film, when a coating liquid containing an organic solvent is applied, or during molding. It is difficult to deteriorate, and the effect of efficiently improving the crack resistance, secondary formability, etc. of the functional film can be expected.
- the average particle size of the graft copolymer particles (A) and the graft copolymer particles (B) is a laser diffraction type using a Microtrac particle size distribution measuring device MT3000 manufactured by Nikkiso Co., Ltd. It can be measured by using the light scattering method in the latex state using the particle size distribution measuring device of.
- the method for producing the graft copolymer particles (A) and the graft copolymer particles (B) is not particularly limited, and is known as an emulsification polymerization method, a mini-emulsion polymerization method, a suspension polymerization method, a bulk polymerization method, and a solution weight.
- a legal or dispersion polymerization method can be applied.
- the emulsification polymerization method is particularly preferable because the adjustment range of the resin structure is large.
- Suitable initiators used in the emulsion polymerization of the graft copolymer particles (A) or the graft copolymer particles (B) include organic peroxides, inorganic peroxides, azo compounds and the like. Agents can be used.
- t-butyl hydroperoxide 1,1,3,3-tetramethylbutyl hydroperoxide, succinic acid peroxide, peroxymaleic acid t-butyl ester, cumene hydroperoxide
- Organic peroxides such as benzoyl peroxide and lauroyl peroxide
- inorganic peroxides such as potassium persulfate, sodium persulfate and ammonium persulfate
- azo compounds such as azobisisobutyronitrile can be used. These may be used alone or in combination of two or more.
- initiators may be used as thermally decomposable radical polymerization initiators, or may be sodium sulfite, sodium thiosulfate, sodium formaldehyde sulfoxylate, ascorbic acid, hydroxyacetone acid, ferrous sulfate, etc. It may be used as a redox-type polymerization initiator system in combination with a reducing agent. In addition, ferrous sulfate may be used in combination with a complex such as ethylenediaminetetraacetic acid-2-sodium.
- inorganic peroxides such as potassium persulfate, sodium persulfate, and ammonium persulfate are used, or t-butyl hydroperoxide, cumene hydroperoxide, etc. are used from the viewpoint of polymerization stability and particle size control. It is recommended to use a redox initiator system in which the organic progress oxide of the above is combined with an inorganic reducing agent such as a divalent iron salt and / or an organic reducing agent such as sodium formaldehyde sulfoxylate, a reducing sugar and ascorbic acid. More preferred.
- the above-mentioned inorganic peroxide or organic peroxide is added by a known method such as a method of adding it to a polymerization system as it is, a method of adding it by mixing it with a monomer, or a method of dispersing it in an aqueous emulsifier solution.
- a method of mixing the acrylic resin film with the monomer and adding the film, and a method of dispersing the acrylic resin film in an aqueous emulsifier solution and adding the film are preferable.
- the surfactant (also referred to as an emulsifier) used for the emulsion polymerization of the graft copolymer particles (A) or the graft copolymer particles (B) is not particularly limited.
- Known surfactants can be widely used for emulsion polymerization.
- Preferred surfactants include, for example, alkyl sulphonic acid, alkylbenzene sulphonic acid, dioctyl sulphosuccinic acid, alkyl sulfuric acid, sodium fatty acid, polyoxyethylene alkyl ether acetic acid, alkyl phosphoric acid, alkyl ether phosphoric acid, alkyl phenyl ether phosphoric acid.
- Sodium salts such as surfactins, anionic surfactants such as potassium salts and ammonium salts, and nonionic surfactants such as alkylphenols, aliphatic alcohols and propylene oxide, reaction products of ethylene oxide, etc.
- anionic surfactants such as potassium salts and ammonium salts
- nonionic surfactants such as alkylphenols, aliphatic alcohols and propylene oxide, reaction products of ethylene oxide, etc.
- alkyl ether phosphoric acid and its salt for example, polyoxyethylene lauryl ether phosphoric acid and its sodium salt can be preferably used.
- One of these surfactants may be used alone, or two or more thereof may be used in combination.
- the graft copolymer particles (A) or the graft copolymer particles (A) by a known method.
- B) can be separated and recovered.
- a water-soluble electrolyte such as calcium chloride or magnesium sulfate
- the graft copolymer particles are subjected to the operations of filtering, washing and drying the solid content.
- (A) or the graft copolymer particles (B) can be separated and recovered.
- the graft copolymer particles (A) or the graft copolymer particles (B) can be separated and recovered by a treatment such as spray drying or freeze-drying of the latex.
- the graft copolymer particles (A) or the graft copolymer particles (B) are separated and recovered in advance for the purpose of reducing appearance defects and internal foreign substances of the acrylic resin film.
- the latex of (A) or the latex of the graft copolymer particles (B) is filtered with a filter or a mesh to remove substances that cause foreign matter defects such as environmental foreign matter and polymerization scale.
- the filter or mesh a known filter or mesh used for filtering a liquid medium can be used.
- the type of filter or mesh, the opening of the filter, the accuracy of filtration, the filtration capacity, etc. are appropriately selected according to the target application, the type of foreign matter to be removed, and the size and amount. It is preferable that the opening and the filtration accuracy of the filter and the mesh are, for example, twice or more larger than the average particle size of the graft copolymer particles (A) or the graft copolymer particles (B), respectively.
- the content of the graft copolymer particles (A) in the acrylic resin film is not particularly limited, but is preferably 1% by mass or more and 70% by mass or less, and 5% by mass or more and 65% by mass or less. It is more preferably 10% by mass or more and 60% by mass or less.
- the content of the graft copolymer particles (B) in the acrylic resin film is not particularly limited, but is preferably 20% by mass or less, more preferably 10% by mass or less, and 5% by mass or less. Most preferably.
- the lower limit value is not particularly limited, but is, for example, 1% by mass or more.
- the total content of the crosslinked elastomer (A1) and the crosslinked elastomer (B1) in the acrylic resin film is not particularly limited, but is preferably 15% by mass or less, more preferably 13% by mass or less, and 12% by mass. % Or less is most preferable.
- the acrylic resin film (acrylic resin composition constituting the acrylic resin film) is a thermoplastic resin having at least partial compatibility with the acrylic resin, if necessary, as long as the object of the present invention is not impaired. It may be included.
- thermoplastic resins include styrene resins, polyvinyl chloride resins, polycarbonate resins, amorphous saturated polyester resins, polyamide resins, phenoxy resins, polyarylate resins, olefin-methacrylic acid derivative resins, and olefins.
- Acrylic acid derivative resin cellulose derivative (cellulose acylate, etc.), vinyl acetate resin, polyvinyl alcohol resin, polyvinyl acetal resin, polylactic acid resin, and PHBH (poly (3-hydroxybutyrate-co-3-hydroxyhexanoate)).
- the styrene resin include styrene-acrylonitrile resin, styrene-methacrylic acid resin, styrene-acrylic acid resin, styrene-maleic anhydride resin, styrene-N-substituted maleimide resin, and styrene-unsubstituted maleimide.
- thermoplastic resins selected from the group consisting of styrene resins, polycarbonate resins, and cellulose acylate resins.
- the acrylic resin film (acrylic resin composition constituting the acrylic resin film) is also a conventionally known additive used for the acrylic resin film, if necessary, as long as the object of the present invention is not impaired. May include. Such additives include antioxidants, UV absorbers, light stabilizers, light diffusing agents, matting agents, lubricants, colorants such as pigments and dyes, fibrous fillers, organic particles and inorganic particles. Examples thereof include anti-blocking agents, ultraviolet reflectors made of metals and metal oxides, plasticizers, antistatic agents and the like. Additives are not limited to these. These additives can be used in any amount depending on the type of the additive, as long as the object of the present invention is not impaired or in order to enhance the effect of the present invention.
- the glass transition temperature (Tg) of the acrylic resin film is 140 ° C. or lower, preferably 135 ° C. or lower, and more preferably 130 ° C. or lower.
- the lower limit is not particularly limited, but it is preferably 100 ° C. or higher, for example, from the viewpoint of preventing printing misalignment and improving reliability when printing is dried.
- the glass transition temperature of the acrylic resin film is measured by the method described in Examples.
- the elongation at break point of the acrylic resin film at 120 ° C. is 200% or more, preferably 210% or more, and more preferably 220% or more.
- the break point elongation of the acrylic resin film at 120 ° C. is 200% or more, there is an advantage that the shape followability of molding is excellent.
- the elongation at break at 120 ° C. of the acrylic resin film is measured by the method described in Examples.
- the elongation at break point of the acrylic resin film at 23 ° C. is preferably 20% or more, more preferably 25% or more, still more preferably 30% or more.
- the elongation at break point of the acrylic resin film at 23 ° C. is measured by the method described in Examples.
- the film thickness of the acrylic resin film is not particularly limited, but is, for example, 75 to 500 ⁇ m, preferably 75 to 300 ⁇ m, and more preferably 100 to 250 ⁇ m.
- the film thickness of the acrylic resin film is measured by the method described in Examples.
- the pencil hardness of the surface of the acrylic resin film on which the hard coat layer is not laminated is preferably B or higher, and more preferably HB or higher, from the viewpoint of scratch resistance.
- the pencil hardness of the surface of the acrylic resin film on which the hard coat layer is not laminated is measured by the person described in the examples according to JIS K5600-5-4.
- the acrylic resin film can be produced by a known processing method.
- known processing methods include a melting processing method, a calendar forming method, a press forming method, a solvent casting method, and the like.
- the melt processing method include an inflation method and a T-die extrusion method.
- the solvent casting method the acrylic resin composition is dissolved and dispersed in a solvent, and then the obtained dispersion liquid (dope) is poured into a film on a belt-shaped substrate. Then, the solvent is volatilized from the flown film-like dope to obtain an acrylic resin film.
- melt processing method that does not use a solvent, particularly a T-die extrusion method is preferable.
- the melt processing method there are few restrictions on the thickness of the film to be manufactured, a film with excellent surface properties can be manufactured with high productivity, and the load on the natural environment and work environment due to the solvent and the manufacturing cost are reduced. be able to.
- the appearance defect of the acrylic resin film is defective by using a filter or filtration using a mesh from the viewpoint of improving the appearance quality of the acrylic resin film. It is preferable to remove environmental foreign substances, polymerization scales, deteriorated resins and the like in the acrylic resin composition, which cause foreign substances inside and the like.
- filtration is performed at any one or more of the preparation of the acrylic resin composition by melt mixing, the pelletization of the molten acrylic resin composition, and the film forming process by T-die. It can be carried out.
- the acrylic resin, the graft copolymer particles (A), (B) and other components may be mixed with the solvent and then filtered before the cast film formation.
- a known filter or mesh can be used without particular limitation as long as the filter or mesh has heat resistance and durability according to the melting processing conditions and resistance to a solvent for casting, a dope, etc. can.
- the film thickness distribution in the TD direction (direction perpendicular to the extrusion direction) of the extruded film is online.
- An automatic die device can be used that measures and automatically adjusts the lip clearance of the T-die during extrusion of the film based on this. By applying an automatic die using an appropriate control method, it may be possible to improve the thickness accuracy of the acrylic resin film.
- both sides of the melted film are brought into contact with (sandwich) the cooling roll or cooling belt at the same time to obtain a film with better surface properties.
- the molten film is simultaneously brought into contact with a roll or a cooling belt maintained at a glass transition temperature of ⁇ 80 ° C. or higher, preferably a glass transition temperature of ⁇ 70 ° C. or higher of the acrylic resin composition.
- a roll having an elastic metal sleeve as disclosed in, for example, JP-A-2000-153547 and JP-A-11-235747 is used.
- the film surface is excellent in smoothness or has an appropriate surface roughness, and the film surface is excellent in slipperiness, and blocking between films is suppressed. , A film with less internal distortion can be obtained.
- Uniaxial stretching or biaxial stretching can be performed using a known stretching device.
- Biaxial stretching can be carried out in a known format such as a method of sequentially biaxial stretching, simultaneous biaxial stretching, longitudinal stretching, and then lateral stretching while relaxing the longitudinal direction to reduce bowing of the film. be.
- any surface shape of may be imparted.
- a surface shape can be imparted by a known method.
- the surface shape of a roll is formed by sandwiching both sides of a melted film immediately after extrusion or a molded film unwound from a feeding device between two rolls or belts having a surface shape on at least one surface. Examples include a method of transfer.
- the hard coat layer in this laminate is a functional layer laminated on at least one side of the acrylic resin film.
- the hard coat layer may be laminated on one side of the acrylic resin film, or may be laminated on both sides.
- the hard coat layer in this laminate is preferably a cured product of a resin composition containing a polyfunctional (meth) acrylate and a photopolymerization initiator.
- the hard coat layer is preferably obtained by curing by a known curing method such as thermosetting or active energy ray curing. More preferably, it is obtained by curing by irradiation with active energy rays such as ultraviolet rays.
- the hard coat layer may be a monomer, oligomer, resin, or a monomer having a radically reactive functional group such as polyfunctional (meth) acrylate, epoxy acrylate, urethane acrylate, polyester acrylate, silicon acrylate, polycarbonate acrylate, and polyacrylic acrylate. It can be formed by curing a composition containing a mixture of.
- a hard coat layer can be formed by curing a composition containing a monomer having a cationic or anionic curable functional group such as an epoxy group and an oxetane group, an oligomer, a resin, or a mixture thereof.
- a hardcourt layer can be formed by thermally curing a polysiloxane-based resin obtained by hydrolyzing and partially condensing an alkoxy group-substituted silyl compound.
- a hardcourt layer can be formed by introducing a reactive functional group into the silyl compound and reacting it to cure it.
- the above-mentioned component used for forming the hard coat layer one kind may be used alone, or two or more components may be appropriately mixed and used.
- polyfunctional (meth) acrylate and epoxy acrylate, urethane acrylate, etc. are described separately for convenience of explanation described later, but “polyfunctional (meth) acrylate” is described separately.
- "" Is a general term for compounds such as monomers, oligomers, and polymers containing two or more (meth) acryloyl functional groups in the structure, and includes epoxy acrylates, urethane acrylates, and alkyls, alkenyls, aryls, esters, and amides.
- Any main chain or skeletal structure such as ethers, fluoroalkyls, silyloxys, and compounds containing two or more (meth) acryloyl functional groups. That is, when described as "polyfunctional (meth) acrylate", as those skilled in the art usually understand, epoxy acrylates, urethane acrylates, and even polyvalent (meth) acrylates having any structure as described above. Intended to contain compounds.
- the polyfunctional (meth) acrylate is not particularly limited as long as it has at least two (meth) acryloyl groups. Specifically, dipentaerythritol hexa (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol tetra (meth) acrylate, dipentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, penta.
- Examples include polyfunctional (meth) acrylates such as erythritol tri (meth) acrylate, trimethylolpropane tri (meth) acrylate, trimethylolethanetri (meth) acrylate, hexanediol di (meth) acrylate, and diethylene glycol di (meth) acrylate. Be done. These may be used individually by 1 type, or may be used by mixing 2 or more types. Further, those commercially available as an ultraviolet curable hard coat agent can be mentioned.
- (meth) acrylate is meant to include methacrylate and acrylate.
- the (meth) acryloyl group is meant to include a methacryloyl group and an acryloyl group.
- epoxy acrylate-based monomer there are no particular restrictions on the epoxy acrylate-based monomer. Specifically, glycidyl (meth) acrylate, ⁇ -methylglycidyl (meth) acrylate, 3,4-epoxycyclohexylmethyl (meth) acrylate, and vinylcyclohexene monooxide (ie, 1,2-epoxy-4-vinylcyclohexane). ) Etc. can be mentioned.
- the urethane acrylate resin can be obtained, for example, by mixing a polyhydric alcohol, a polyhydric isocyanate, and a hydroxyl group-containing (meth) acrylate to generate a urethane bond by the reaction between the isocyanate group and the hydroxyl group.
- the hydroxyl group-containing (meth) acrylate is not particularly limited, and the hydroxyl group-containing (meth) acrylate, for example, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, and, if necessary, at least one hydroxyl group.
- Compounds with ethylenically unsaturated bonds such as 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl acrylate, polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate, trimetyl propane mono (meth).
- the polyvalent isocyanate is not particularly limited.
- Examples of the polyvalent isocyanate compound which is a compound containing two or more isocyanate groups include 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 1,3-xylylene diisocyanate, and 1,4-xylylene diisocyanate.
- polyhydric alcohol examples include ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,7-heptanediol, and 1,8.
- An organic tin-based urethanization catalyst is used to promote the reaction of the isocyanate component with the isocyanate group.
- the organic tin-based urethanization catalyst may be any catalyst generally used for the urethanization reaction, and examples thereof include dibutyltin dilaurate, dibutyltin diacetate, dibutyltin dialkylmalate, tin stearate, and tin octylate. Be done.
- the amount of these organotin-based urethanization catalysts used is not particularly limited, but it is appropriate to use them within the range of 0.005% by mass or more and 3% by mass or less. If the lower limit is not reached, the urethane reaction does not proceed sufficiently, and if the upper limit is exceeded, heat generation during the urethane reaction makes reaction control difficult.
- a composition for forming a hard coat composed of a polysiloxane-based resin composition preferably has the following general formula (2): R 4- (SiR 5 a (OR 6 ) 3-a ) ... (2) (In the general formula (2), at least a part of R4 is from an epoxy group, an oxetane group, a (meth) acryloyl group, a vinyl group, a hydroxyl group, a carboxyl group, an amino group, and an amino group protected with a functional group.
- R5 is a monovalent hydrocarbon group selected from the above, independently of each other, a hydrogen atom, an alkyl group having 1 or more and 10 or less carbon atoms, an aryl group having 6 or more and 25 or less carbon atoms, and 7 carbon atoms. It is a monovalent hydrocarbon group selected from the group consisting of 12 or more aralkyl groups.
- R 6 is an independently hydrogen atom or an alkyl group having 1 or more and 10 or less carbon atoms.
- A is 0 or more and 2 or more.
- a condensate (A) obtained by hydrolyzing and condensing a silane compound (Z) having a hydrolyzable silyl group represented by (the following integer), and a catalyst or a catalyst for reacting a reactive substituent. It is a curable composition containing a curing agent (B).
- the weight average molecular weight of the condensate (A) is 30,000 or less. Further, it is preferable that the ratio of the silane compound having a reactive substituent is 10% by mass or more of the whole. In this case, the cured product as the hard coat layer is excellent in hardness, chemical resistance, durability and the like.
- the catalyst or curing agent (B) is preferably one or more catalysts or curing agents selected from a photoradical generator, a photocation generator, and a photoanion generator from the viewpoint of photocurability of the composition.
- the reactive substituent in the general formula (2) is an epoxy group or an oxetane group because it has less curing shrinkage during formation of the hardcoat layer and it is easy to obtain a functional film having excellent durability and suppressed curl. Is preferable.
- a neutral salt catalyst as a catalyst for carrying out the hydrolysis / condensation reaction of the silane compound (Z). This is because when the reactive substituent is an epoxy group or an oxetane group, it is easy to suppress the decomposition of the reactive substituent during hydrolysis condensation.
- the ratio Q / P of the number of moles Q of the OR 6 groups directly bonded to the silicon atom of the condensate (A) to the number of moles P of 6 is 0.2 or less. This is because the cured product has excellent hardness, chemical resistance, durability, and the like.
- a known method can be applied as a method for curing the resin composition when forming the hard coat layer.
- a method of irradiating with active energy rays typified by ultraviolet rays is preferable.
- a photopolymerization initiator, a photoanion generator, a photocation generator, and the like are usually added to the composition for forming a hard coat layer.
- photopolymerization initiator examples include, for example, acetophenone, benzophenone, benzoylmethyl ether, benzoylethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, dibenzyl, 1-hydroxy-cyclohexyl-phenyl-ketone, 2,2-dimethoxy-.
- 2-Phenylacetophenone Tetramethylthium monosulfide, Tetramethylthium disulfide, Thioxanthone, 2-Chlorothioxanthone, 2-Methylthioxanthone, and 2-Methyl-1- [4- (Methylthio) phenyl] -2-morpholinopropane- Examples include 1-on compounds. Among these, 1-hydroxy-cyclohexyl-phenyl-ketone having excellent compatibility with the resin is preferable.
- photocation generator examples include CPI-100P, CPI-101A, CPI-200K, and CPI-200S manufactured by San-Apro; WPI-124, WPI-113, and WPI- manufactured by Wako Pure Chemical Industries, Ltd.
- photoanionic generators such as 116, WPI-169, WPI-170, and WPI-124; Rhodia's Rhodesyl 2074, etc. include, for example, acetophenone o-benzoyloxyum, nifedipine, 2- (9).
- the curable composition When a coating film made of a curable composition is cured to form a hard coat layer, the curable composition is known for the purpose of improving coatability, scratch resistance after curing, antifouling property, and the like.
- Various leveling agents may be blended.
- As the leveling agent a fluorine-based leveling agent, an acrylic-based leveling agent, a silicone-based leveling agent, and an adduct or a mixture thereof can be used.
- the blending amount of the leveling agent is not particularly limited, but is, for example, an amount within the range of 0.03 parts by mass or more and 3.0 parts by mass or less with respect to 100 parts by mass of the curable composition.
- the curable composition When a hard coat layer is formed by applying a curable composition, the curable composition includes an ultraviolet absorber, a light stabilizer, a defoaming agent, an antioxidant, a light diffusing agent, a matting agent, and an antioxidant.
- Various additives such as stains, lubricants, colorants such as pigments and dyes, organic particles, inorganic fine particles, and antistatic agents can be added as needed. Additives are not limited to these.
- an organic solvent is usually blended.
- the organic solvent is not particularly limited as long as it can impart the desired coatability to the curable composition and can form a hard coat layer having a desired film thickness and performance.
- the boiling point of the organic solvent is preferably 50 ° C. or higher and 150 ° C. or lower from the viewpoint of coatability and drying property of the formed coating film.
- organic solvent examples include saturated hydrocarbons such as hexane; aromatic hydrocarbons such as toluene and xylene; halogenated hydrocarbons such as chloroform and methylene chloride; alcohols such as methanol, ethanol, isopropyl alcohol and butanol.
- esters such as methyl acetate, ethyl acetate, and butyl acetate
- ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone
- ethers such as tetrahydrofuran, dioxane, propylene glycol monoethyl ether, methyl cellosolve, and ethyl cellosolve.
- Classes N-methylpyrrolidone, amides such as dimethylformamide, and the like.
- the organic solvent may be used alone or in combination of two or more.
- any method can be adopted without particular limitation as the application method.
- the coating method include a reverse coating method, a gravure coating method, a bar coating method, a die coating method, a spray coating method, a kiss coating method, a wire bar coating method, and a curtain coating method. These coating methods may be carried out individually or in combination of one or more.
- the drying temperature of the coating film when the organic solvent is removed by drying is preferably 60 ° C. or higher and 120 ° C. or lower, and more preferably 70 ° C. or higher and 100 ° C. or lower. If the drying temperature is too low, the organic solvent may remain in the coating film. Further, if the drying temperature is too high, the flatness of the functional film (hard coat layer) may be impaired due to thermal deformation of the base film.
- the wavelength of the ultraviolet rays emitted when the coating film is cured is preferably in the range of 200 nm or more and 400 nm or less.
- the integrated amount of ultraviolet (UV) light will be described later [4.
- the conditions described in [Method for manufacturing a laminate] are preferably used.
- the ultraviolet exposure light irradiation device include lamp light sources such as high-pressure mercury lamps, low-pressure mercury lamps, metal halide lamps, electrodeless lamps, and excima lamps, and pulsed or continuous lasers such as argon ion lasers and helium neon lasers.
- An irradiation device provided with a light source or the like can be used.
- composition for forming a hard coat layer examples include a product name "Z-879” manufactured by Aika Kogyo Co., Ltd., a product name "Unidic ESS108” manufactured by DIC Corporation, "NSC-7312” manufactured by Dainichi Seika Kogyo Co., Ltd., and Arakawa.
- Commercially available products such as "FA-3280H” may be used. Since it has elongation even after curing, it is possible to further increase the 120 ° C. crack elongation of the present laminate.
- the film thickness of the hard coat layer is not particularly limited, but is, for example, 0.6 to 10.0 ⁇ m, preferably 0.7 to 7.0 ⁇ m, and more preferably 0.8 to 5.0 ⁇ m. preferable.
- the film thickness of the hard coat layer is 0.6 to 10.0 ⁇ m, it has an advantage that both wear resistance and moldability can be achieved at the same time.
- the film thickness of the hard coat layer is measured by the method described in Examples.
- inorganic particles or metal particles may be added in order to improve the wear resistance of the hard coat layer.
- the inorganic particles and metal particles are not particularly limited, but for example, silica, alumina, titanium oxide, zinc oxide, zirconia, graphene, nanocarbon, carbon black, nanodiamond, mica, barium titanate, boron nitride, metallic silver, etc.
- Metallic copper and the like can be mentioned. These particles may be used without surface treatment, or may be surface-treated by a method known in advance to control the dispersed state, and the affinity with the hard coat layer may be appropriately controlled. ..
- the present laminate may have other functional layers in addition to the hard coat layer.
- the other functional layer is not particularly limited, and for example, various conventionally known functional layers can be adopted.
- Specific examples of the functional layer include an antireflection layer, an antiglare layer, an antifouling layer, a fingerprint resistant layer, a scratch resistant layer, an antistatic layer, an ultraviolet shielding layer, an infrared shielding layer, a surface uneven layer, a light diffusion layer, and a matte layer.
- Examples thereof include a layer, a polarizing layer, a colored layer, a design layer, an embossing layer, a conductive layer, a gas barrier layer, and a gas absorbing layer. Two or more kinds of these functional layers may be provided in combination.
- one functional layer may have a plurality of functions of two or more.
- the antireflection layer may be composed of a low refractive index layer, may be composed of both a high refractive index layer and a low refractive index layer, and may have a surface uneven shape finer than the wavelength of visible light. It may be configured by forming on the surface of.
- this laminate is composed of a specific acrylic resin film and a hard coat layer, and is excellent in moldability and abrasion resistance.
- the crack elongation of this laminate at 120 ° C. is 50% or more, preferably 52% or more, and more preferably 54% or more.
- the crack elongation at 120 ° C. of this laminated body is measured by the method described in Examples.
- the ⁇ haze of the steel wool wear test in 50 g / cm 2 , 5 reciprocations of this laminate is 1.0% or less, preferably 0.8% or less, and preferably 0.6% or less. More preferred. If the ⁇ haze of the steel wool wear test at 50 g / cm 2 or 5 round trips is 1.0% or less, it has the advantage of not being scratched even when wiped.
- the ⁇ haze of the steel wool wear test at 50 g / cm 2 and 5 reciprocations is measured by the method described in Examples.
- the ⁇ haze of the steel wool wear test at 50 g / cm 2 , 10 reciprocations of this laminate is, for example, 1.0% or less, preferably 0.9% or less, and preferably 0.8% or less. Is more preferable. If the ⁇ haze of the steel wool wear test at 50 g / cm 2 , 10 reciprocations is 1.0% or less, it has the advantage of not being scratched even when wiped.
- the ⁇ haze of the steel wool wear test at 50 g / cm 2 , 10 reciprocations is measured by the method described in Examples.
- the pencil hardness of this laminate is preferably H or higher, and more preferably 2H or higher, from the viewpoint of being less likely to be scratched.
- the pencil hardness of this laminate is measured by the method described in Examples.
- Step 2 The above “steel wool wear test” and “pencil hardness” are both indicators of wear resistance. “Steel wool wear test” evaluates wear resistance by scratches when wiped, and “pencil hardness” evaluates wear resistance by scratches when scratched. It is preferable that the present laminated body is effective in any index.
- the phase difference (Re) of the present laminate is, for example, 38 nm or less, preferably 30 nm or less, more preferably 20 nm or less, further preferably 10 nm or less, and preferably 8 nm or less. Especially preferable.
- the phase difference (Re) is 38 nm or less, the decrease in contrast can be suppressed in the liquid crystal display device.
- the phase difference (Re) is measured by the method described in Examples.
- the phase difference (Rth) of this laminated body is, for example,
- the phase difference (Rth) is
- the phase difference (Rth) is measured by the method described in Examples.
- the ⁇ E (color difference) of this laminated body after the weather resistance test is, for example, 5.2% or less, preferably 4.0% or less, and more preferably 3.0% or less.
- ⁇ E after the weather resistance test is 5.2% or less, it has an advantage of excellent long-term durability.
- the ⁇ E after the weather resistance test is measured by the method described in Examples.
- the formable radius of curvature of this laminated body is, for example, 1 mm or less, preferably 0.8 mm or less, and more preferably 0.6 mm or less.
- the radius of curvature that can be formed is 1 mm or less, there is an advantage that even a complicated shape can be formed. Further, the radius of curvature that can be formed is measured by the method described in the examples.
- This laminate may have a primer layer on the opposite surface to the surface on which the hard coat layer is provided.
- a primer layer an ink used for printing performed in a post-processing step and a resin having good metal adhesion used for metal vapor deposition are used.
- urethane-based resin, acrylic-based resin, polyester-based resin, polycarbonate, epoxy-based resin, melamine-based resin, copolymer of vinyl acetate and vinyl chloride, and the like are used.
- the thickness of the primer layer is preferably 0.5 to 10 ⁇ m, more preferably 0.5 to 5 ⁇ m, and most preferably 0.5 to 3 ⁇ m. When it is 0.5 ⁇ m or more, the adhesion can be guaranteed, and when it is 10 ⁇ m or less, the productivity is better.
- main molded body a molded body including the present laminated body.
- applications of this molded body include automobile interior applications such as instrument panels, in-vehicle display front panels, console boxes, meter covers, door lock peasels, steering wheels, power window switch bases, center clusters, and dashboards; weather strips, Bumpers, bumper guards, side mudguards, body panels, spoilers, front reels, strut mounts, wheel caps, center pillars, door mirrors, center ornaments, side moldings, door moldings, wind moldings, windows, headlamp covers, tail lamp covers, windshield parts, etc. Automotive exterior applications; housings, display windows, buttons, etc.
- Applications for building interior materials such as toilet seats; applications for building exterior materials such as exterior walls such as siding, walls, roofs, gates, and windbreak boards; applications for surface decorative materials for furniture such as window frames, doors, handrail sill, and lintels; Applications for optical members such as various displays, lenses, mirrors, goggles, windowpanes; and interior / exterior applications for various vehicles other than automobiles such as trains, aircraft, and ships.
- the present molded body is preferably used, for example, for applications such as an in-vehicle display front plate having a planar shape, a curved surface shape, and a three-dimensional shape. Therefore, in one embodiment of the present invention, an in-vehicle display front plate provided with the present molded body is provided.
- a method for producing a laminated body including an acrylic resin film and a hard coat layer laminated on at least one side of the acrylic resin film.
- the method for producing the laminate comprises a step of irradiating the hard coat layer coated on at least one surface of the acrylic resin film with UV on a cooling roll to cure the hard coat layer, and the UV irradiation UV.
- the integrated light amount is 150 to 500 mJ / cm 2
- the cooling roll temperature is 25 to 70 ° C.
- the acrylic resin film has a glass transition temperature of 140 ° C. or less
- the breaking point elongation at 120 ° C The crack elongation at 120 ° C. is 50% or more
- the ⁇ haze of the steel wool wear test at 50 g / cm 2 , 5 reciprocations is 1.0% or less. Is.
- the integrated ultraviolet (UV) light amount is, for example, 150 to 500 mJ / cm 2 , preferably 160 to 480 mJ / cm 2 , and more preferably 170 to 460 mJ / cm 2 . preferable.
- the UV integrated light amount is 150 to 500 mJ / cm 2 , it is possible to obtain an appropriate hardness of the hard coat layer while ensuring moldability.
- the cooling roll temperature is, for example, 25 to 70 ° C., preferably 30 to 70 ° C., more preferably 35 to 70 ° C., and 40 to 70 ° C. Is more preferable, 42 to 68 ° C. is particularly preferable, and 45 to 65 ° C. is particularly preferable.
- the cooling roll temperature is 25 to 70 ° C.
- the hard coat layer can be cured while suppressing the temperature rise during irradiation with ultraviolet rays, and a laminate having desired physical properties can be produced.
- the method for producing the present laminate is a step of applying a curable composition for forming a hard coat layer to the surface of an acrylic resin film as a base film, which is formed in the above-mentioned step, before the step of curing the hard coat layer. It may include a step of removing the organic solvent from the coated coating film by drying.
- a method for producing a molded product which comprises a step of shaping the laminate shown below at a molding temperature of 140 ° C. or lower at the time of preform.
- a laminate including an acrylic resin film and a hard coat layer laminated on at least one surface of the acrylic resin film.
- the acrylic resin film has a glass transition temperature of 140 ° C. or lower and a breaking point elongation at 120 ° C. of 200% or more.
- the laminate has a crack elongation of 50% or more at 120 ° C. and a ⁇ haze of 1.0% or less in a steel wool wear test at 50 g / cm 2 , 5 reciprocations.
- the film is shaped by preform at 140 ° C or lower. Since the present laminate contains the above-mentioned specific acrylic resin film, it is possible to perform molding at a low temperature when laminating and molding the resin on the present laminate.
- the temperature at the time of preform is, for example, 140 ° C. or lower, preferably 130 ° C. or lower, and more preferably 120 ° C. or lower.
- the lower limit is not particularly limited, but from the viewpoint of shape-imparting property, for example, it is preferably 100 ° C. or higher, and preferably 105 ° C. or higher.
- the resin used for injection molding is not particularly limited, and examples thereof include a thermoplastic resin and a curable resin.
- the thermoplastic resin include a polycarbonate resin having a bisphenol-based skeleton, a fluorene-based skeleton, an isosorbide-based skeleton, and the like, an acrylic resin, and a styrene resin (AS resin, ABS resin, and MAS resin, styrene maleimide resin, and styrene maleic acid anhydride.
- Resins and the like saturated polyester resins, polyvinyl chloride resins, polyarylate resins, PPS resins, POM resins, polyamide resins, polylactic acid resins, cellulose acylate resins, polyolefin resins and the like.
- the curable resin include epoxy resin, vinyl ester resin, unsaturated polyester resin, phenolic resin, melamine resin, benzoxazine resin and the like.
- transparent resins such as polycarbonate resins, acrylic resins, styrene resins, polyarylate resins, and polyolefin resins are preferably used.
- the printed main laminated body is preformed (curved surface molding) at 140 ° C. or lower in advance, trimmed, placed in a mold, and then injection-molded with a resin to be integrated. It can be manufactured by converting.
- one embodiment of the present invention is as follows.
- a laminated body including an acrylic resin film and a hard coat layer laminated on at least one surface of the acrylic resin film.
- the acrylic resin film has a glass transition temperature of 140 ° C. or lower and a breaking point elongation at 120 ° C. of 200% or more.
- the laminate has a crack elongation of 50% or more at 120 ° C. and a ⁇ haze of 1.0% or less in a steel wool wear test at 50 g / cm 2 , 5 reciprocations.
- the laminate according to ⁇ 1> which has at least one of the following physical properties:
- the phase difference (Re) is 38 nm or less.
- the ⁇ E after the weather resistance test is 5.2% or less.
- the acrylic resin film contains 1 to 70% by mass of graft copolymer particles (A) having an average particle diameter of 20 nm to 200 nm, and a graft having an average particle diameter larger than that of the graft copolymer particles (A). 20% by mass or less of the copolymer particles (B), and the total content of the crosslinked elastomer (A1) and the crosslinked elastomer (B1) in the acrylic resin film is 15% by mass or less, ⁇ 1>.
- the pencil hardness of the surface of the acrylic resin film on which the hard coat layer is not laminated is B or more, and the breaking point elongation at 23 ° C. is 20% or more, ⁇ 1> to ⁇ 5. > The laminate according to any one of.
- ⁇ 7> The laminate according to any one of ⁇ 4> to ⁇ 6>, wherein the graft copolymer particles (A) contain 0.01 to 5% by mass of a reactive ultraviolet absorber.
- a molded product comprising the laminate according to any one of ⁇ 1> to ⁇ 7>.
- An in-vehicle display front plate comprising the molded body according to ⁇ 8>.
- the UV integrated light intensity of the UV irradiation is 150 to 500 mJ / cm 2 .
- the temperature of the cooling roll is 25 to 70 ° C.
- the acrylic resin film has a glass transition temperature of 140 ° C. or lower and a breaking point elongation at 120 ° C. of 200% or more.
- the laminate has a crack elongation of 50% or more at 120 ° C. and a ⁇ haze of 1.0% or less in a steel wool wear test at 50 g / cm 2 , 5 reciprocations.
- Method. ⁇ 11> A method for producing a molded product, which comprises a step of shaping the laminate shown below at a molding temperature of 140 ° C.
- the acrylic resin film has a glass transition temperature of 140 ° C. or lower and a breaking point elongation at 120 ° C. of 200% or more.
- the laminate has a crack elongation of 50% or more at 120 ° C. and a ⁇ haze of 1.0% or less in a steel wool wear test at 50 g / cm 2 , 5 reciprocations.
- Glass transition temperature (Tg) A differential scanning calorimetry device (DSC) SSC-5200 manufactured by Seiko Instruments was used. The sample is once heated to 200 ° C. at a rate of 25 ° C./min, held for 10 minutes, and after preliminary adjustment to lower the temperature to 50 ° C. at a rate of 25 ° C./min, 200 at a rate of temperature increase of 10 ° C./min. Measurements were made while the temperature was raised to ° C. The differential value was obtained from the obtained DSC curve (SSDC), and the glass transition temperature was obtained from the maximum point.
- SSDC DSC curve
- the laminated film is cut into 10 mm (width) x 100 mm (length), and the residual heat time is 2 minutes using a Tensilon tensile tester (Shimadzu Corporation, AG-2000D) equipped with a high temperature bath set at 120 ° C. The measurement was performed under the conditions of a chuck distance of 50 mm and a tensile speed of 200 mm / min. The elongation at break of the laminated film was defined as the tensile break point elongation.
- the value of tensile break point elongation is the average value excluding the highest value and the lowest value among the measurement results obtained using the five test pieces.
- the crack elongation was measured on a laminated film (HC layer formation) in which a hard coat layer was formed on one side. Specifically, a Tensilon tensile tester (Shimadzu Corporation, AG-2000D), in which a laminated film was cut into a size of 10 mm (width) x 100 mm (length) and equipped with a high temperature bath set at 120 ° C., was used. The measurement was performed under the conditions of a residual heat time of 2 minutes, a distance between chucks of 50 mm, and a tensile speed of 200 mm / min. The elongation when cracks were generated in the hard coat layer was measured as the crack elongation at 120 ° C. The average values of the test results obtained by measuring the three samples are shown in Tables 5 and 6.
- a vacuum compressed air molding machine manufactured by Fuse Vacuum Co., Ltd., NGF-0406-S was used.
- the molding machine consists of an upper part and a lower part, and R (radius of curvature): 0.3, 0.5, 0.8, 1.0, 1.5, 2.0, 2.5.3.0 at the lower part.
- Height A mold with multiple protrusions of 3 mm was installed, and a laminated film was installed on top. After that, the pressure was reduced to ⁇ 100 kPa in both the upper part and the lower part, and the laminated film was heated by the infrared heater installed in the upper part.
- Phase difference A 40 mm ⁇ 40 mm test piece was cut out from the film. Using an automatic birefringence meter (KOBRA-WR manufactured by Oji Measurement Co., Ltd.), this test piece was subjected to in-plane phase difference Re and an in-plane phase difference Re and an incident angle of 0 ° at a temperature of 23 ⁇ 2 ° C and a humidity of 50 ⁇ 5%. The phase difference Rth in the thickness direction was measured.
- the film thickness of the acrylic resin film was measured with a PEACOCK dial gauge No. 25 (manufactured by Ozaki Seisakusho Co., Ltd.).
- the film thickness of the hard coat layer was measured by an F20 film thickness measurement system (manufactured by Filmometrics Co., Ltd.).
- the opposite surface of the hard coat layer was painted black with a felt-tip pen, and the refractive index of the acrylic resin film was 1.49 and the refractive index of the hard coat layer was 1.50.
- Pencil hardness was measured according to JIS K5600-5-4. Using an electric pencil hardness tester (manufactured by Mize Tester Co., Ltd.), five tests were carried out at a load of 750 g and a speed of 60 mm / min. If the number of scratches is one or less, it is judged as a pass.
- the pencil hardness was measured on the hard coat layer of the functional film.
- Monomer mixture -Vinyl monomer mixture (n-butyl (BA) 90% acrylate and 10% methyl methacrylate (MMA)) 30 parts-Allyl methacrylate (AlMA) 1 part-Cumen hydroperoxide (CHP) 0.2 parts.
- AlMA Allyl methacrylate
- CHP Cumen hydroperoxide
- 0.05 parts by mass of sodium dioctyl sulphosuccinate was charged into the polymerization apparatus.
- the internal temperature of the polymerization apparatus was set to 60 ° C., 70 parts of a vinyl monomer mixture (MMA 98%, BA 1%, and RUVA 1%) for forming a graft polymer layer (A2), and tertiary decyl mercaptan (t-DM) 0.
- RUVA is a reactive ultraviolet absorber (2- (2'-hydroxy-5'-methacryloyloxyethylphenyl) -2-H-benzotriazole (manufactured by Otsuka Chemical Co., Ltd., RUVA-93)).
- the internal temperature was set to 60 ° C., and a monomer mixture consisting of 7 parts of n-butyl acrylate and 63 parts of methyl methacrylate and cumene hydroperoxide 0.
- the mixed solution of 2 parts was continuously added over 5 hours, and the polymerization was continued for another 1 hour to obtain a graft copolymer particle latex.
- the polymerization conversion was 98.5%.
- the obtained latex was salted out with calcium chloride, coagulated, washed with water and dried to obtain graft copolymer particles (A) in the form of white powder.
- the blending amount of each component is as shown in Table 1.
- the average particle size of the rubber particles of the graft copolymer particles (A) was 80 nm.
- particles of the polymer to be the first layer of the core (crosslinked elastomer (B1)) were obtained.
- the polymerization conversion was 99.0%.
- a latex of a graft copolymer particle (B1) composed of a core (crosslinked elastomer (B1)) having a two-layer structure and a shell (graft polymer layer (B2)) was obtained.
- the polymerization conversion was 100.0%.
- the obtained latex was salted out and solidified with magnesium sulfate, and then the solidified solid content was washed with water and dried to obtain graft copolymer particles (B) in the form of white powder.
- the average particle size of the graft copolymer particles was 250 nm.
- the blending amount of each component is as shown in Table 2.
- the obtained innermost layer polymer latex was kept at 80 ° C. in a nitrogen stream, 0.1 part of potassium persulfate was added, and then 41 parts of n-butyl acrylate, 9 parts of styrene, and 1 part of allyl methacrylate were simply composed.
- the polymer mixture was added continuously over 5 hours. During this period, 0.1 part of potassium oleate was added in 3 portions. After the addition of the monomer mixture was completed, 0.05 part of potassium persulfate was further added to complete the polymerization, and the mixture was kept for 2 hours.
- the polymerization conversion rate of the obtained rubber particles was 99%.
- graft copolymer The obtained rubber particle latex was kept at 80 ° C., 0.02 part of potassium persulfate was added, and then a monomer mixture of 14 parts of methyl methacrylate and 1 part of n-butyl acrylate was continuously added for 1 hour. After the addition of the monomer mixture was completed, the mixture was held for 1 hour to obtain a graft copolymer latex. The polymerization conversion was 99%.
- Preparation of graft copolymer particles The obtained rubber particle latex was kept at 80 ° C., and a monomer mixture of 5 parts of methyl methacrylate and 5 parts of n-butyl acrylate was continuously added over 0.5 hours. After the addition of the monomer mixture was completed, the mixture was held for 1 hour to obtain a graft copolymer particle latex. The polymerization conversion was 99%.
- the obtained graft copolymer particle latex was subjected to salting and coagulation with calcium chloride, heat treatment, and drying to obtain white powdery graft copolymer particles (B).
- the blending amount of each component is as shown in Table 2.
- both the first extruder and the second extruder have a diameter of 75 mm and an L / D (ratio of the length L and the diameter D of the extruder) is 74, which is a meshing type isodirectional twin-screw extruder.
- the raw material was supplied to the raw material supply port of the first extruder using a low-weight feeder (manufactured by Kubota Co., Ltd.).
- the degree of decompression of each vent in the first extruder and the second extruder was ⁇ 0.095 MPa.
- the first extruder and the second extruder is used as an internal pressure control mechanism that connects the first extruder and the second extruder with a pipe with a diameter of 38 mm and a length of 2 m, and connects the resin discharge port of the first extruder and the raw material supply port of the second extruder.
- the resin discharged from the second extruder was cooled by a cooling conveyor and then cut into pellets by a pelletizer.
- the discharge port of the first extruder, the first extruder and the first extruder are used.
- a resin pressure gauge was provided at the center of the connecting parts between the two extruders and at the discharge port of the second extruder.
- polymethyl methacrylate resin (Mw: 105,000) was used as a raw material resin, and monomethylamine was used as an imidizing agent to produce an imide resin intermediate 1.
- the temperature of the maximum temperature part of the extruder was 280 ° C.
- the screw rotation speed was 55 rpm
- the supply amount of the raw material resin was 150 kg / hour
- the amount of monomethylamine added was 2.0 parts with respect to 100 parts of the raw material resin.
- the constant flow pressure valve was installed immediately before the raw material supply port of the second extruder, and the pressure of the monomethylamine press-fitting portion of the first extruder was adjusted to 8 MPa.
- the imidizing agent and by-products remaining in the rear vent and the vacuum vent were degassed, and then dimethyl carbonate was added as an esterifying agent to produce the imide resin intermediate 2.
- the temperature of each barrel of the extruder was 260 ° C.
- the screw rotation speed was 55 rpm
- the amount of dimethyl carbonate added was 3.2 parts with respect to 100 parts of the raw material resin.
- the resin was extruded from a strand die, cooled in a water tank, and then pelletized with a pelletizer to obtain a glutarimide acrylic resin.
- the imidization rate, the content of glutarimide units, the acid value, and the glass transition temperature were measured according to the above method.
- the imidization rate was 13%
- the content of glutarimide units was 7% by weight
- the acid value was 0.4 mmol / g
- the glass transition temperature was 124 ° C.
- pellets It was melt-kneaded for a period of time, taken up in a strand shape, cooled in a water tank, and cut using a pelletizer to obtain pellets.
- the die used a ⁇ 4.5 x 15 hole, and a leaf disk filter (manufactured by Nagase & Co., Ltd., filtration system 10 ⁇ , size 7 inches, number of sheets 33) was installed as a polymer filter between the die and the head of the extruder.
- the obtained pellets are melt-kneaded at a cylinder set temperature of 180 ° C. to 240 ° C.
- a touch roll equipped with a metallic cast roll temperature-controlled at 90 ° C and an elastic metal sleeve temperature-controlled at 60 ° C was brought into contact with both sides to form a film while being cooled and solidified, and wound to obtain a film having a thickness of 175 ⁇ m. rice field.
- Alumina particles (Z-607-ALU, manufactured by Aica Kogyo Co., Ltd., manufactured by Aica Kogyo Co., Ltd., solid content concentration 30%) were blended with Z607-5AFH (solid content concentration 30%, manufactured by Aica Kogyo Co., Ltd.) at a ratio of 9: 1.
- PGM Propylene glycol monomethyl ether
- this laminate is excellent in moldability and wear resistance, it can be suitably used in various fields including automobile interior applications such as in-vehicle displays.
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Abstract
Description
アクリル系樹脂フィルムと、前記アクリル系樹脂フィルムの少なくとも片面に積層されたハードコート層と、を含む積層体であり、前記アクリル系樹脂フィルムは、ガラス転移温度が140℃以下であり、かつ、120℃での破断点伸度が200%以上であり、前記積層体は、120℃でのクラック伸度が50%以上であり、かつ、50g/cm2、5往復でのスチールウール摩耗試験のΔヘイズが1.0%以下である、積層体。
近年、車載ディスプレイの分野では、大型化・曲面化が進んでいる。そのような車載ディスプレイ用のフィルムとしては、曲面成形が可能であり、かつ、耐摩耗性(耐擦傷性、耐傷付性ともいう。)、反射防止、信頼性等の品質をクリアしたフィルムであることが要求される。このような用途に使用するフィルムとしては、ポリカーボネート系樹脂とアクリル系樹脂を積層した多層フィルムや、さらにその上に耐擦り傷性、防眩性、反射防止性、防汚性等の機能性を有する機能性層をコーティング等により形成した機能性フィルムが広く使用されている。しかしながら、このようなフィルムは、耐熱性の異なる二種類の基材層を積層しているために、適正な二次成形加工が難しく、白化、層間剥離、機能性層の剥離等を生じやすい。また、長時間の使用に伴い、ディスプレイ表面から剥離を生じることもある。更に、ポリカーボネート樹脂は固有位相差が大きく、二次成形に伴う延伸により、ディスプレイ表面に虹模様等が生じたり、コントラストが低下する事がある等の課題があった。一方、アクリル系樹脂フィルムは、上述の通り、透明性、硬度、耐候性、延伸時にも位相差の少ない優れた光学特性、及び二次成形性等の優れた特性を有する。そこで、本発明者らは、アクリル系樹脂フィルムを車載ディスプレイに適用することについて検討した。
・ガラス転移温度(Tg)が140℃以下であり、かつ、120℃での破断点伸度が200%以上であるアクリル系樹脂フィルムを用いることにより、優れた成形性が担保される。
・ハードコート層の製造工程において、UV積算光量を150~500mJ/cm2に制御し、UV照射時の冷却ロール温度を25~70℃(好ましくは、40~70℃)に制御することで、積層体の耐摩耗性が強化される。
本積層体は、アクリル系樹脂フィルムと、前記アクリル系樹脂フィルムの少なくとも片面に積層されたハードコート層と、を含む。
アクリル系樹脂フィルムは、アクリル樹脂、及びゴム成分を含有するグラフト共重合体粒子を含むアクリル系樹脂組成物で構成されている。ゴム成分を含有するグラフト共重合体粒子として、平均粒子径が20nm以上200nm以下であるグラフト共重合体粒子(A)を含むことが好ましく、グラフト共重合体粒子(A)に加えて、グラフト共重合体粒子(A)より平均粒子径が大きいグラフト共重合体粒子(B)を含んでもよい。具体的には、アクリル系樹脂フィルムにおいて、アクリル樹脂、又は、アクリル樹脂及びその他の成分を含むマトリックス中に、グラフト共重合体粒子(A)が分散して、又は、グラフト共重合体粒子(A)及びグラフト共重合体粒子(B)が分散している。
アクリル系樹脂フィルムに用いるアクリル樹脂としては、従来公知のものが使用できる。例えば、硬度、成形性の観点からは、アクリル樹脂が、アクリル樹脂の全量を100質量%とした場合、メタクリル酸メチル単位50質量%以上100質量%以下、及びその他の構成単位0質量%以上50質量%以下から構成される熱可塑性アクリル重合体を20質量%以上100質量%以下含むのが好ましい。
前述のとおり、アクリル系樹脂フィルムは、ゴム成分を含有するグラフト共重合体粒子として、グラフト共重合体粒子(A)を含むことが好ましく、必要に応じてグラフト共重合体粒子(A)に加えてさらにグラフト共重合体粒子(B)を含んでも良い。
一般式(1)で表される反応性紫外線吸収剤としては、具体的には、2-(2’-ヒドロキシ-5’-(メタ)アクリロイルオキシエチルフェニル)-2H-ベンゾトリアゾール類が挙げられ、より具体的には、2-(2’-ヒドロキシ-5’-アクリロイルオキシエチルフェニル)-2H-ベンゾトリアゾール、2-(2’-ヒドロキシ-5’-メタクリロイルオキシエチルフェニル-2H-ベンゾトリアゾール、2-(2’-ヒドロキシ-5’-メタクリロイルオキシエチルフェニル)-5-クロロ-2H-ベンゾトリアゾール、2-(2’-ヒドロキシ-5’-メタクリロイルオキシプロピルフェニル)-2H-ベンゾトリアゾール、2-(2’-ヒドロキシ-5’-メタクリロイルオキシエチル-3’-t-ブチルフェニル)-2H-ベンゾトリアゾール等が挙げられる。好ましくは、コスト及び取り扱い性から、2-(2’-ヒドロキシ-5’-メタクリロイルオキシエチルフェニル)-2H-ベンゾトリアゾールを用いる。
アクリル系樹脂フィルム(アクリル系樹脂フィルムを構成するアクリル系樹脂組成物)は、本発明の目的を損なわない範囲で、必要に応じて、アクリル樹脂と少なくとも部分的に相溶性を有する熱可塑性樹脂を含んでもよい。このような熱可塑性樹脂としては、例えば、スチレン系樹脂、ポリ塩化ビニル樹脂、ポリカーボネート樹脂、非晶質の飽和ポリエステル樹脂、ポリアミド樹脂、フェノキシ樹脂、ポリアリレート樹脂、オレフィン-メタクリル酸誘導体樹脂、オレフィン-アクリル酸誘導体樹脂、セルロース誘導体(セルロースアシレート等)、酢酸ビニル樹脂、ポリビニルアルコール樹脂、ポリビニルアセタール樹脂、ポリ乳酸樹脂、及びPHBH(ポリ(3-ヒドロキシブチレート-コ-3-ヒドロキシヘキサノエート)樹脂等が挙げられる。スチレン系樹脂としては、例えば、スチレン-アクリロニトリル樹脂、スチレン-メタクリル酸樹脂、スチレン-アクリル酸樹脂、スチレン-無水マレイン酸樹脂、スチレン-N置換マレイミド樹脂、スチレン-非置換マレイミド樹脂、スチレン-アクリロニトリル-ブタジエン樹脂、及びスチレン-アクリロニトリル-アクリル酸エステル樹脂等が挙げられる。中でも、スチレン系樹脂、ポリカーボネート樹脂、及びセルロースアシレート樹脂からなる群から選ばれる1種以上の熱可塑性樹脂が、アクリル樹脂との相溶性に優れ、アクリル系樹脂フィルムの耐折り曲げ割れ性、耐溶剤性、低吸湿性、また積層体のガラス飛散防止性能等を向上できる可能性があることから好ましい。
アクリル系樹脂フィルムのガラス転移温度(Tg)は、140℃以下であり、135℃以下であることが好ましく、130℃以下であることがより好ましい。アクリル系樹脂フィルムのガラス転移温度が140℃以下であると、成形温度を高くすることなく成形が可能であり、成形時のクラック発生を抑制できるとの利点を有する。また、下限は特に限定されないが、印刷の乾燥時の印刷ズレ防止や信頼性向上の観点から、例えば、100℃以上であることが好ましい。なお、アクリル系樹脂フィルムのガラス転移温度は、実施例に記載の方法により測定される。
アクリル系樹脂フィルムは、公知の加工方法により製造できる。公知の加工方法の具体例としては、溶融加工法、カレンダー成形法、プレス成形法、及び溶剤キャスト法等が挙げられる。溶融加工法としては、インフレーション法やTダイ押出法等が挙げられる。また、溶剤キャスト法では、アクリル樹脂組成物を溶剤に溶解・分散させた後、得られた分散液(ドープ)を、ベルト状基材上にフィルム状に流涎する。次いで、流涎されたフィルム状のドープから溶剤を揮発させることにより、アクリル系樹脂フィルムを得る。
本積層体におけるハードコート層は、前記アクリル系樹脂フィルムの少なくとも片面に積層された機能層である。ハードコート層は、前記アクリル系樹脂フィルムの片面に積層されていてもよく、両面に積層されていてもよい。
R4-(SiR5 a(OR6)3-a)・・・(2)
(一般式(2)中、R4は、少なくとも一部の末端が、エポキシ基、オキセタン基、(メタ)アクリロイル基、ビニル基、水酸基、カルボキシル基、アミノ基、官能基保護されたアミノ基からなる群から選ばれる反応性置換基で置換された、炭素原子数1以上10以下のアルキル基、炭素原子数6以上25以下のアリール基、及び炭素原子数7以上12以下のアラルキル基からなる群より選ばれる1価の炭化水素基である。R5はそれぞれ独立して、水素原子、炭素原子数1以上10以下のアルキル基、炭素原子数6以上25以下のアリール基、及び炭素原子数7以上12以下のアラルキル基からなる群より選ばれる1価の炭化水素基である。R6はそれぞれ独立して水素原子、又は炭素原子数1以上10以下のアルキル基である。aは0以上2以下の整数である。)で表される、加水分解性シリル基を有するシラン化合物(Z)を加水分解及び縮合させて得られる縮合物(A)、及び、反応性置換基を反応せしめる触媒或いは硬化剤(B)を含有する、硬化性組成物である。
6基のモル数Pに対する、縮合物(A)が有するケイ素原子に直接結合したOR 6基のモル数Qの比Q/Pが0.2以下であることがより好ましい。硬化物の硬度、耐薬品性、耐久性等が優れるためである。
光アニオン発生剤の具体例としては、例えば、アセトフェノンo-ベンゾイルオキシウム、ニフェジピン、2-(9-オキソキサンテン2-イル)プロピオン酸1,5,7-トリアザビシクロ〔4.4.0〕デカ-5-エン、2-ニトロフェニルメチル4-メタクリロイルオキシピペリジン-1-カルボキシラート、1,2-ジイソプロピル-3-〔ビス(ジメルアミノ)メチレン〕グアニジウム2-(3-ベンゾイルフェニル)プロピオナート、1,2-ジシクロヘキシル-4,4,5,5-テトラメチルピグアニジウム、及びn-ブチルトリフェニルバラート等が挙げられる。
本積層体は、ハードコート層に加えて、その他の機能層を有していてもよい。そのような他の機能層としては、特に限定されず、例えば、従来公知の種々の機能層を採用することができる。機能層の具体例としては、反射防止層、防眩層、防汚層、耐指紋層、耐傷付き層、帯電防止層、紫外線遮蔽層、赤外線遮蔽層、表面凹凸層、光拡散層、艶消層、偏光層、着色層、意匠層、エンボス層、導電層、ガスバリア層、ガス吸収層等が挙げられる。これらの機能層を、2種以上組み合わせて備えていてもよい。また一つの機能層が、二つ以上の複数の機能を兼ね備えても良い。反射防止層は、低屈折率層で構成されてもよく、高屈折率層及び低屈折率層の両方で構成されてもよく、また、可視光の波長よりも微細な表面凹凸形状を機能層の表面に形成することにより構成しても良い。
本積層体は、上述の通り、特定のアクリル系樹脂フィルムと、ハードコート層とから構成され、成形性および耐摩耗性に優れる。
本発明の一実施形態において、本積層体を備える、成形体(以下、「本成形体」と称する。)を提供する。
本発明の一実施形態において、アクリル系樹脂フィルムと、前記アクリル系樹脂フィルムの少なくとも片面に積層されたハードコート層と、を含む積層体の製造方法を提供する。本積層体の製造方法は、冷却ロール上において、前記アクリル系樹脂フィルムの少なくとも片面に塗布した前記ハードコート層にUV照射して、前記ハードコート層を硬化する工程を含み、前記UV照射のUV積算光量が150~500mJ/cm2であり、冷却ロール温度が25~70℃であり、前記アクリル系樹脂フィルムは、ガラス転移温度が140℃以下であり、かつ、120℃での破断点伸度が200%以上であり、前記積層体は、120℃でのクラック伸度が50%以上であり、かつ、50g/cm2、5往復でのスチールウール摩耗試験のΔヘイズが1.0%以下である。
本発明の一実施形態において、以下で示す積層体に対して、プレフォーム時の成形温度が140℃以下で賦形する工程を含む、成形体の製造方法を提供する:
アクリル系樹脂フィルムと、前記アクリル系樹脂フィルムの少なくとも片面に積層されたハードコート層と、を含む積層体であり、
前記アクリル系樹脂フィルムは、ガラス転移温度が140℃以下であり、かつ、120℃での破断点伸度が200%以上であり、
前記積層体は、120℃でのクラック伸度が50%以上であり、かつ、50g/cm2、5往復でのスチールウール摩耗試験のΔヘイズが1.0%以下である、積層体。
<1>アクリル系樹脂フィルムと、前記アクリル系樹脂フィルムの少なくとも片面に積層されたハードコート層と、を含む積層体であり、
前記アクリル系樹脂フィルムは、ガラス転移温度が140℃以下であり、かつ、120℃での破断点伸度が200%以上であり、
前記積層体は、120℃でのクラック伸度が50%以上であり、かつ、50g/cm2、5往復でのスチールウール摩耗試験のΔヘイズが1.0%以下である、積層体。
<2>以下の物性のうち少なくとも1つを有する、<1>に記載の積層体:
位相差(Re)が38nm以下である、
耐候性試験後のΔEが5.2%以下である。
<3>前記ハードコート層が、多官能(メタ)アクリレートと、光重合開始剤とを含む樹脂組成物の硬化物である、<1>または<2>に記載の積層体。
<4>前記アクリル系樹脂フィルムが、平均粒子径が20nm~200nmのグラフト共重合体粒子(A)を1~70質量%と、前記グラフト共重合体粒子(A)より平均粒子径が大きいグラフト共重合体粒子(B)を20質量%以下と、を含み、前記アクリル系樹脂フィルム中の架橋エラストマー(A1)および架橋エラストマー(B1)の合計含有量が15質量%以下である、<1>~<3>のいずれかに記載の積層体。
<5>前記グラフト共重合体粒子(B)の平均粒子径が150nm以上であり、かつ、当該グラフト共重合体粒子(B)を1~10質量%含む、<4>に記載の積層体。
<6>ハードコート層を積層していない前記アクリル系樹脂フィルムの表面の鉛筆硬度がB以上であり、かつ、23℃での破断点伸度が20%以上である、<1>~<5>のいずれかに記載の積層体。
<7>前記グラフト共重合体粒子(A)が、反応性紫外線吸収剤を0.01~5質量%含む、<4>~<6>のいずれかに記載の積層体。
<8><1>~<7>のいずれかに記載の積層体を備える、成形体。
<9><8>に記載の成形体を備える、車載ディスプレイ前面板。
<10>アクリル系樹脂フィルムと、前記アクリル系樹脂フィルムの少なくとも片面に積層されたハードコート層と、を含む積層体の製造方法であり、
冷却ロール上において、前記アクリル系樹脂フィルムの少なくとも片面に塗布した前記ハードコート層にUV照射して、前記ハードコート層を硬化する工程を含み、
前記UV照射のUV積算光量が150~500mJ/cm2であり、
前記冷却ロールの温度が25~70℃であり、
前記アクリル系樹脂フィルムは、ガラス転移温度が140℃以下であり、かつ、120℃での破断点伸度が200%以上であり、
前記積層体は、120℃でのクラック伸度が50%以上であり、かつ、50g/cm2、5往復でのスチールウール摩耗試験のΔヘイズが1.0%以下である、積層体の製造方法。
<11>以下で示す積層体に対して、プレフォーム時の成形温度が140℃以下で賦形する工程を含む、成形体の製造方法:
アクリル系樹脂フィルムと、前記アクリル系樹脂フィルムの少なくとも片面に積層されたハードコート層と、を含む積層体であり、
前記アクリル系樹脂フィルムは、ガラス転移温度が140℃以下であり、かつ、120℃での破断点伸度が200%以上であり、
前記積層体は、120℃でのクラック伸度が50%以上であり、かつ、50g/cm2、5往復でのスチールウール摩耗試験のΔヘイズが1.0%以下である、積層体。
実施例および比較例における測定および評価を、以下の方法で行った。
セイコーインスツルメンツ製の示差走査熱量分析装置(DSC)SSC-5200を用いた。試料を一旦200℃まで25℃/分の速度で昇温した後10分間ホールドし、25℃/分の速度で50℃まで温度を下げる予備調整を経て、10℃/分の昇温速度で200℃まで昇温する間の測定を行った。得られたDSC曲線から微分値を求め(SSDC)、その極大点からガラス転移温度を求めた。
積層フィルムを10mm(幅)×100mm(長さ)に切り出し、120℃に設定された高温槽が取り付けられたテンシロン引張試験機(株式会社島津製作所、AG-2000D)を用いて、余熱時間2分、チャック間距離50mm、引張速度200mm/分の条件で測定を行った。積層フィルムが破断した際の伸度を引張破断点伸度とした。
クラック伸度の測定は、片面にハードコート層が形成された積層フィルム(HC層形成)に対して行われた。具体的には、積層フィルムを10mm(幅)×100mm(長さ)に切り出し、120℃に設定された高温槽が取り付けられたテンシロン引張試験機(株式会社島津製作所、AG-2000D)を用いて、余熱時間2分、チャック間距離50mm、引張速度200mm/分の条件で測定を行った。ハードコート層にクラックが発生した時の伸度を120℃クラック伸度として測定を行った。3つの試料に対して測定を行って得られた試験結果の平均値を、表5および6に記す。
真空圧空成形機(布施真空株式会社製、NGF-0406-S)を用いた。成形機は上部と下部からなっており、下部にR(曲率半径):0.3、0.5、0.8、1.0、1.5、2.0、2.5.3.0で高さ:3mmの複数の凸がある金型を設置し、上部に積層フィルムを設置した。その後、上部及び下部ともに-100kPaまで減圧し、上部に設置されていた赤外線加熱器で積層フィルムを加熱した。実施例1~12、比較例1~4および比較例8~12は120℃、比較例5~7は160℃まで加熱された段階で、積層フィルムを金型に押し当て、続いて、上部に圧空を導入して300kPaとし、成形を行った。〇:凸部にクラック無、△:凸部の周の1部にクラック、×:凸部の全周にクラックとした。
表面性測定機HEIDON Type 14DR(新東科学株式会社製)を用いた。直径1mmの測定子にスチールウール♯0000を装着し、50gの錘を載せた。積層フィルムのハードコート面にスチールウールを載せ、ストローク:50mm、スピード6000mm/minで5往復および10往復試験を実施した。試験前後のヘイズを測定した。ヘイズはヘイズメーターNDH4000(日本電色工業株式会社製)を用いてISO14782に準じて測定した。
フィルムから、40mm×40mmの試験片を切り出した。この試験片を、自動複屈折計(王子計測株式会社製 KOBRA-WR)を用いて、温度23±2℃、湿度50±5%において、波長590nm、入射角0゜で面内位相差Reおよび厚み方向位相差Rthを測定した。
Suga SX2D-75(スガ試験機株式会社製)を用いた。照射照度180(W/m2、300~400nm)、ブラックパネル温度83±3℃、相対湿度50±5%とした。ガラスフィルター構成は内側に石英、外側にポリシリケート♯275を使用し、500時間試験をした。試験前後で色差(ΔE)を測定した。ΔEは、分光色彩計SE7700(日本電飾工業株式会社製)で測定した。
モード:透過、光源:D65、視野:2°、測定径:28mm。
アクリル系樹脂フィルムの膜厚は、PEACOCKダイアルゲージNo25(株式会社尾崎製作所製)で測定した。
JIS K5600-5-4に準じて鉛筆硬度を測定した。電動鉛筆硬度試験機(株式会社マイズ試験機製)を使用し、750g荷重、60mm/minの速度で、5本試験を実施した。傷が1本以下であれば合格判定とした。
撹拌機付き8L重合装置に、以下の物質を仕込んだ。
・脱イオン水 200部
・ジオクチルスルフォコハク酸ナトリウム 0.24部
・ソディウムホルムアルデヒドスルフォキシレート 0.15部
・エチレンジアミン四酢酸-2-ナトリウム 0.001部
・硫酸第一鉄 0.00025部
重合装置内を窒素ガスで充分に置換し実質的に酸素のない状態とした。その後、重合装置の内温を60℃にした。次いで、下記単量体混合物30部を10質量部/時間の割合で連続的に重合装置内に添加した。添加終了後、さらに0.5時間重合を継続し、架橋エラストマー(A1)の粒子(平均粒子径90nm)を得た。重合転化率は99.5%であった。
・ビニル単量体混合物(アクリル酸n-ブチル(BA)90%及びメタクリル酸メチル(MMA)10%) 30部
・アリルメタクリレート(AlMA) 1部
・クメンハイドロパーオキサイド(CHP) 0.2部
その後、ジオクチルスルフォコハク酸ナトリウム0.05質量部を重合装置内に仕込んだ。次いで、重合装置の内温を60℃にし、グラフトポリマー層(A2)形成用のビニル単量体混合物(MMA98%、BA1%、及びRUVA1%)70部、ターシャリードデシルメルカプタン(t-DM)0.5部及びCHP0.5部からなる単量体混合物70部を10部/時間の割合で連続的に重合装置内に添加した。さらに1時間重合を継続し、グラフト共重合体粒子(平均粒子径90nm)を得た。重合転化率は98.2%であった。得られたラテックスを塩化カルシウムで塩析、凝固させた後、凝固した固形分を水洗、及び乾燥させてグラフト共重合体粒子(A)の粉末を得た。なお、各成分の配合量は表1に示した通りである。
攪拌機付き8L重合装置に、以下の物質を仕込んだ。
脱イオン水 200部
ジオクチルスルフォコハク酸ナトリウム 0.25部
ソディウムホルムアルデヒドスルフォキシレート 0.15部
エチレンジアミン四酢酸-2-ナトリウム 0.001部
硫酸第一鉄 0.00025部
重合機内を窒素ガスで充分に置換し実質的に酸素のない状態とした後、内温を60℃にし、アクリル酸n-ブチル27部、メタクリル酸メチル3部、メタクリル酸アリル0.9部からなる単量体混合物とクメンハイドロパーオキサイド0.2部との混合液を3時間かけて連続的に添加し、添加終了後、さらに0.5時間重合を継続し、ゴム粒子を得た。重合転化率は99.5%であった。
撹拌機付き8L重合装置に、以下の物質を仕込んだ。
・脱イオン水 180部
・ポリオキシエチレンラウリルエーテルリン酸 0.002部
・ホウ酸 0.4725部
・炭酸ナトリウム 0.04725部
・水酸化ナトリウム 0.0098部
重合装置内を窒素ガスで充分に置換し実質的に酸素のない状態とした。その後、重合装置の内温を80℃にした。過硫酸カリウム0.027部を2%水溶液として重合装置内に入れた後、ビニル単量体混合物(MMA97%、及びBA3%)27部と、メタクリル酸アリル0.036部とからなる混合液を81分かけて連続的に重合装置内に添加した。
最内層重合体の作成:
以下の組成の混合物をガラス製反応器に仕込み、窒素気流中で撹拌しながら80℃に昇温したのち、メタクリル酸メチル25部、メタクリル酸アリル1部からなる単量体混合物とt-ブチルハイドロパーオキサイド0.1部との混合液のうち25%を一括して仕込み、45分間の重合を行なった。
脱イオン水 220部
ホウ酸 0.3部
炭酸ナトリウム 0.03部
N-ラウロイルサルコシン酸ナトリウム 0.09部
ソディウムホルムアルデヒドスルフォキシレート 0.0 9部
エチレンジアミン四酢酸-2-ナトリウム 0.006部
硫酸第1鉄 0.002部
続いてこの混合液の残り75%を1時間にわたって連続添加した。添加終了後、同温度で2時間保持し重合を完結させた。また、この間に0.2部のN-ラウロイルサルコシン酸ナトリウムを追加した。得られた最内層架橋メタクリル系重合体ラテックスの重合転化率(重合生成量/モノマー仕込量)は98%であった。
得られた最内層重合体ラテックスを窒素気流中で80℃に保ち、過硫酸カリウム0.1部を添加したのち、アクリル酸n-ブチル41部、スチレン9部、メタクリル酸アリル1部からなる単量体混合物を5時間にわたって連続添加した。この間にオレイン酸カリウム0.1部を3回に分けて添加した。モノマー混合液の添加終了後、重合を完結させるためにさらに過硫酸カリウムを0.05部添加し2時間保持した。得られたゴム粒子の重合転化率は99%であった。
得られたゴム粒子ラテックスを80℃に保ち、過硫酸カリウム0.02部を添加したのちメタクリル酸メチル14部、アクリル酸n-ブチル1部の単量体混合物を1時間にわたって連続添加した。モノマー混合液の追加終了後1時間保持しグラフト共重合体ラテックスを得た。重合転化率は99%であった。
得られたゴム粒子ラテックスを80℃に保ち、メタクリル酸メチル5部、アクリル酸n-ブチル5部の単量体混合物を0.5時間にわたって連続添加した。モノマー混合液の追加終了後1時間保持しグラフト共重合体粒子ラテックスを得た。重合転化率は99%であった。
得られた粉末状のグラフト共重合体粒子(A)および(B)、ならびにパラペットHM(株式会社クラレ製、メタクリル酸メチル100重量%)およびAO60(株式会社ADEKA製)を、各々表3に示す配合量(部)で配合した。得られた混合物を、ヘンシェルミキサーを用いて混合した。次いで、シリンダ温度を190℃~250℃に調整した58mmΦベント式同方向二軸押出機(東芝機械株式会社製TEM58 L/D=41.7)を使用し、スクリュー回転数150rpm、吐出量180kg/時間にて溶融混練を行い、ストランド状に引き取り、水槽にて冷却後、ペレタイザーを用いて切断して、ペレット得た。ダイスはΦ4.5×15穴を使用し、ダイスと押出機のヘッドの間にポリマーフィルターとして、リーフディスクフィルター(長瀬産業製、濾過制度10μ、サイズ7インチ、枚数33枚)を設置した。得られたペレットを、Tダイ付90mmΦ単軸押出機を用いて、シリンダ設定温度180℃~240℃にて吐出量150kg/hrにて溶融混練し、ダイス温度240℃にてTダイより吐出し、90℃に温調した金属性キャストロールと60℃に温調した弾性金属スリーブを備えたタッチロールに両面を接触させて冷却固化しつつ成膜して巻き取り、厚さ175μmのフィルムを得た。
パラペットHM(株式会社クラレ製、メタクリル酸メチル100重量%)をスミペックスEX(住友化学製、メタクリル酸メチル95重量%/アクリル酸メチル5重量%のメタクリル酸エステル系樹脂)に変更した以外は製造例5と同様の方法で、フィルムを製造した。
パラペットHM(株式会社クラレ製、メタクリル酸メチル100重量%)をグルタルイミドアクリル系樹脂に変更した以外は製造例5と同様の方法で、フィルムを製造した。
ゴムの種類および各成分の配合量を表3に記載の通り変更し、添加剤を加えなかったこと以外は製造例6と同様の方法で、フィルムを製造した。
Z607-5AFH(固形分濃度30%、アイカ工業株式会社製)にアルミナ粒子(Z-607-ALU、アイカ工業株式会社製、固形分濃度30%)を9:1の比率で配合した。固形分濃度は20%になるようにプロピレングリコールモノメチルエーテル(PGM)を配合した。
表4の配合で塗料1および2と同様に配合した。なお、表4中の主剤は、いずれも、ウレタンアクリレート樹脂である。
製造例6~11で得られたフィルム、またはAW10U(PCPMMA多層フィルム)上に、塗料1~7を表5および6に記載の組み合わせで、塗布した。1μは200線、2μは150線、3.5μは120線のグラビアロールを使用し、ライン速度は20m/min、グラビアロールの回転数は20rpmとした。コーティング後、80℃、1min乾燥し溶媒を揮発させ、表5および6に記載のUV積算光量で紫外線を照射し、表5および6に記載の膜厚を有するハードコート層を形成した。得られたフィルムおよび積層体について種々の特性を評価した。結果を表5および6に示す。
Claims (11)
- アクリル系樹脂フィルムと、前記アクリル系樹脂フィルムの少なくとも片面に積層されたハードコート層と、を含む積層体であり、
前記アクリル系樹脂フィルムは、ガラス転移温度が140℃以下であり、かつ、120℃での破断点伸度が200%以上であり、
前記積層体は、120℃でのクラック伸度が50%以上であり、かつ、50g/cm2、5往復でのスチールウール摩耗試験のΔヘイズが1.0%以下である、積層体。 - 以下の物性のうち少なくとも1つを有する、請求項1に記載の積層体:
位相差(Re)が38nm以下である、
耐候性試験後のΔEが5.2%以下である。 - 前記ハードコート層が、多官能(メタ)アクリレートと、光重合開始剤とを含む樹脂組成物の硬化物である、請求項1または2に記載の積層体。
- 前記アクリル系樹脂フィルムが、平均粒子径が20nm~200nmのグラフト共重合体粒子(A)を1~70質量%と、前記グラフト共重合体粒子(A)より平均粒子径が大きいグラフト共重合体粒子(B)を20質量%以下と、を含み、前記アクリル系樹脂フィルム中の架橋エラストマー(A1)および架橋エラストマー(B1)の合計含有量が15質量%以下である、請求項1~3のいずれか1項に記載の積層体。
- 前記グラフト共重合体粒子(B)の平均粒子径が150nm以上であり、かつ、当該グラフト共重合体粒子(B)を1~10質量%含む、請求項4に記載の積層体。
- ハードコート層を積層していない前記アクリル系樹脂フィルムの表面の鉛筆硬度がB以上であり、かつ、23℃での破断点伸度が20%以上である、請求項1~5のいずれか1項に記載の積層体。
- 前記グラフト共重合体粒子(A)が、反応性紫外線吸収剤を0.01~5質量%含む、請求項4~6のいずれか1項に記載の積層体。
- 請求項1~7のいずれか1項に記載の積層体を備える、成形体。
- 請求項8に記載の成形体を備える、車載ディスプレイ前面板。
- アクリル系樹脂フィルムと、前記アクリル系樹脂フィルムの少なくとも片面に積層されたハードコート層と、を含む積層体の製造方法であり、
冷却ロール上において、前記アクリル系樹脂フィルムの少なくとも片面に塗布した前記ハードコート層にUV照射して、前記ハードコート層を硬化する工程を含み、
前記UV照射のUV積算光量が150~500mJ/cm2であり、
前記冷却ロールの温度が25~70℃であり、
前記アクリル系樹脂フィルムは、ガラス転移温度が140℃以下であり、かつ、120℃での破断点伸度が200%以上であり、
前記積層体は、120℃でのクラック伸度が50%以上であり、かつ、50g/cm2、5往復でのスチールウール摩耗試験のΔヘイズが1.0%以下である、積層体の製造方法。 - 以下で示す積層体に対して、プレフォーム時の成形温度が140℃以下で賦形する工程を含む、成形体の製造方法:
アクリル系樹脂フィルムと、前記アクリル系樹脂フィルムの少なくとも片面に積層されたハードコート層と、を含む積層体であり、
前記アクリル系樹脂フィルムは、ガラス転移温度が140℃以下であり、かつ、120℃での破断点伸度が200%以上であり、
前記積層体は、120℃でのクラック伸度が50%以上であり、かつ、50g/cm2、5往復でのスチールウール摩耗試験のΔヘイズが1.0%以下である、積層体。
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WO2024203401A1 (ja) * | 2023-03-30 | 2024-10-03 | 株式会社カネカ | 積層体及びそれを含む樹脂成形体 |
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WO2023042922A1 (ja) * | 2021-09-17 | 2023-03-23 | 三菱ケミカル株式会社 | 多層フィルムの製造方法、メラミン化粧板の製造方法、多層フィルム、メラミン化粧板用保護フィルム、及びメラミン化粧板 |
WO2024203401A1 (ja) * | 2023-03-30 | 2024-10-03 | 株式会社カネカ | 積層体及びそれを含む樹脂成形体 |
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JPWO2022137768A1 (ja) | 2022-06-30 |
CN116761840A (zh) | 2023-09-15 |
US20230340218A1 (en) | 2023-10-26 |
EP4269101A1 (en) | 2023-11-01 |
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