WO2013187506A1 - 積層体 - Google Patents
積層体 Download PDFInfo
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- WO2013187506A1 WO2013187506A1 PCT/JP2013/066480 JP2013066480W WO2013187506A1 WO 2013187506 A1 WO2013187506 A1 WO 2013187506A1 JP 2013066480 W JP2013066480 W JP 2013066480W WO 2013187506 A1 WO2013187506 A1 WO 2013187506A1
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- WIPO (PCT)
- Prior art keywords
- meth
- acrylate
- mass
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- parts
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- 239000002344 surface layer Substances 0.000 claims abstract description 193
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 290
- 239000011342 resin composition Substances 0.000 claims description 174
- 230000001588 bifunctional effect Effects 0.000 claims description 108
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 92
- 229920001296 polysiloxane Polymers 0.000 claims description 86
- 150000001875 compounds Chemical class 0.000 claims description 67
- 239000010410 layer Substances 0.000 claims description 38
- 238000004381 surface treatment Methods 0.000 claims description 2
- 230000003373 anti-fouling effect Effects 0.000 abstract description 101
- 238000005299 abrasion Methods 0.000 abstract description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 87
- 239000000178 monomer Substances 0.000 description 83
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 80
- 239000000758 substrate Substances 0.000 description 73
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 67
- 239000000203 mixture Substances 0.000 description 65
- 239000000047 product Substances 0.000 description 62
- 239000002202 Polyethylene glycol Substances 0.000 description 60
- 229920001223 polyethylene glycol Polymers 0.000 description 60
- 239000000463 material Substances 0.000 description 47
- 238000000034 method Methods 0.000 description 47
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 36
- 229910052782 aluminium Inorganic materials 0.000 description 36
- 238000011156 evaluation Methods 0.000 description 35
- 239000003795 chemical substances by application Substances 0.000 description 34
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 33
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 32
- 125000003827 glycol group Chemical group 0.000 description 32
- 239000002335 surface treatment layer Substances 0.000 description 32
- 229920000642 polymer Polymers 0.000 description 30
- 239000000126 substance Substances 0.000 description 28
- 125000004386 diacrylate group Chemical group 0.000 description 27
- 238000012546 transfer Methods 0.000 description 26
- 239000007864 aqueous solution Substances 0.000 description 25
- 239000011148 porous material Substances 0.000 description 25
- 239000011347 resin Substances 0.000 description 25
- 229920005989 resin Polymers 0.000 description 25
- 230000000052 comparative effect Effects 0.000 description 24
- 238000006116 polymerization reaction Methods 0.000 description 21
- 241000519995 Stachys sylvatica Species 0.000 description 19
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 17
- 125000004185 ester group Chemical group 0.000 description 17
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 17
- 229920001748 polybutylene Polymers 0.000 description 17
- VXRAAUKUZQYZRW-UHFFFAOYSA-N 3'-N'-Acetylfusarochromanone Chemical compound O1C(C)(C)CC(=O)C2=C(N)C(C(=O)CC(CO)NC(=O)C)=CC=C21 VXRAAUKUZQYZRW-UHFFFAOYSA-N 0.000 description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 16
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 16
- 229940059574 pentaerithrityl Drugs 0.000 description 16
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 13
- 229920000728 polyester Polymers 0.000 description 13
- 229920005650 polypropylene glycol diacrylate Polymers 0.000 description 13
- 239000005977 Ethylene Substances 0.000 description 12
- 230000001678 irradiating effect Effects 0.000 description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 12
- 229920001515 polyalkylene glycol Polymers 0.000 description 12
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 12
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 11
- 238000001723 curing Methods 0.000 description 11
- 235000006408 oxalic acid Nutrition 0.000 description 11
- QNODIIQQMGDSEF-UHFFFAOYSA-N (1-hydroxycyclohexyl)-phenylmethanone Chemical compound C=1C=CC=CC=1C(=O)C1(O)CCCCC1 QNODIIQQMGDSEF-UHFFFAOYSA-N 0.000 description 10
- 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 10
- 125000000217 alkyl group Chemical group 0.000 description 10
- 125000002091 cationic group Chemical group 0.000 description 10
- 239000011521 glass Substances 0.000 description 10
- 229920001451 polypropylene glycol Polymers 0.000 description 10
- 229920013730 reactive polymer Polymers 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 238000007743 anodising Methods 0.000 description 9
- 230000002349 favourable effect Effects 0.000 description 9
- 239000006082 mold release agent Substances 0.000 description 9
- 239000003505 polymerization initiator Substances 0.000 description 9
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 8
- MPIAGWXWVAHQBB-UHFFFAOYSA-N [3-prop-2-enoyloxy-2-[[3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propoxy]methyl]-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C MPIAGWXWVAHQBB-UHFFFAOYSA-N 0.000 description 8
- 239000003085 diluting agent Substances 0.000 description 8
- 125000001153 fluoro group Chemical group F* 0.000 description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- 238000004528 spin coating Methods 0.000 description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 7
- 239000004721 Polyphenylene oxide Substances 0.000 description 7
- 239000004809 Teflon Substances 0.000 description 7
- 229920006362 Teflon® Polymers 0.000 description 7
- 238000004581 coalescence Methods 0.000 description 7
- 238000006482 condensation reaction Methods 0.000 description 7
- 229920001577 copolymer Polymers 0.000 description 7
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- FSQHDIAYKNDZFC-UHFFFAOYSA-N methyl sulfate;trimethyl-[3-(2-methylprop-2-enoylamino)propyl]azanium Chemical compound COS([O-])(=O)=O.CC(=C)C(=O)NCCC[N+](C)(C)C FSQHDIAYKNDZFC-UHFFFAOYSA-N 0.000 description 7
- 229920000570 polyether Polymers 0.000 description 7
- 238000003825 pressing Methods 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 7
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 7
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 6
- 229920002284 Cellulose triacetate Polymers 0.000 description 6
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 6
- 150000003926 acrylamides Chemical class 0.000 description 6
- 238000002048 anodisation reaction Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 6
- 238000000151 deposition Methods 0.000 description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000013213 extrapolation Methods 0.000 description 6
- 239000010419 fine particle Substances 0.000 description 6
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 6
- 238000000691 measurement method Methods 0.000 description 6
- IHBKAGRPNRKYAO-UHFFFAOYSA-M methyl sulfate;trimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]azanium Chemical compound COS([O-])(=O)=O.CC(=C)C(=O)OCC[N+](C)(C)C IHBKAGRPNRKYAO-UHFFFAOYSA-M 0.000 description 6
- 229910052697 platinum Inorganic materials 0.000 description 6
- 229920000515 polycarbonate Polymers 0.000 description 6
- 239000004417 polycarbonate Substances 0.000 description 6
- 239000001384 succinic acid Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 125000003396 thiol group Chemical group [H]S* 0.000 description 6
- LHENQXAPVKABON-UHFFFAOYSA-N 1-methoxypropan-1-ol Chemical compound CCC(O)OC LHENQXAPVKABON-UHFFFAOYSA-N 0.000 description 5
- XLPJNCYCZORXHG-UHFFFAOYSA-N 1-morpholin-4-ylprop-2-en-1-one Chemical compound C=CC(=O)N1CCOCC1 XLPJNCYCZORXHG-UHFFFAOYSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 241000694440 Colpidium aqueous Species 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 5
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 5
- 229910019142 PO4 Inorganic materials 0.000 description 5
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 5
- 235000010724 Wisteria floribunda Nutrition 0.000 description 5
- GUCYFKSBFREPBC-UHFFFAOYSA-N [phenyl-(2,4,6-trimethylbenzoyl)phosphoryl]-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C(=O)C1=C(C)C=C(C)C=C1C GUCYFKSBFREPBC-UHFFFAOYSA-N 0.000 description 5
- 150000005215 alkyl ethers Chemical class 0.000 description 5
- 239000002216 antistatic agent Substances 0.000 description 5
- ZNAAXKXXDQLJIX-UHFFFAOYSA-N bis(2-cyclohexyl-3-hydroxyphenyl)methanone Chemical compound C1CCCCC1C=1C(O)=CC=CC=1C(=O)C1=CC=CC(O)=C1C1CCCCC1 ZNAAXKXXDQLJIX-UHFFFAOYSA-N 0.000 description 5
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 5
- 239000008119 colloidal silica Substances 0.000 description 5
- 238000011109 contamination Methods 0.000 description 5
- 230000001747 exhibiting effect Effects 0.000 description 5
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 5
- 238000007373 indentation Methods 0.000 description 5
- 230000003993 interaction Effects 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 239000010452 phosphate Substances 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- 230000000379 polymerizing effect Effects 0.000 description 5
- YOSXAXYCARLZTR-UHFFFAOYSA-N prop-2-enoyl isocyanate Chemical class C=CC(=O)N=C=O YOSXAXYCARLZTR-UHFFFAOYSA-N 0.000 description 5
- 230000009257 reactivity Effects 0.000 description 5
- 210000002374 sebum Anatomy 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 5
- 239000004034 viscosity adjusting agent Substances 0.000 description 5
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 4
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 4
- IUVCFHHAEHNCFT-INIZCTEOSA-N 2-[(1s)-1-[4-amino-3-(3-fluoro-4-propan-2-yloxyphenyl)pyrazolo[3,4-d]pyrimidin-1-yl]ethyl]-6-fluoro-3-(3-fluorophenyl)chromen-4-one Chemical compound C1=C(F)C(OC(C)C)=CC=C1C(C1=C(N)N=CN=C11)=NN1[C@@H](C)C1=C(C=2C=C(F)C=CC=2)C(=O)C2=CC(F)=CC=C2O1 IUVCFHHAEHNCFT-INIZCTEOSA-N 0.000 description 4
- WMYINDVYGQKYMI-UHFFFAOYSA-N 2-[2,2-bis(hydroxymethyl)butoxymethyl]-2-ethylpropane-1,3-diol Chemical compound CCC(CO)(CO)COCC(CC)(CO)CO WMYINDVYGQKYMI-UHFFFAOYSA-N 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 4
- 241000135309 Processus Species 0.000 description 4
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 4
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 4
- 239000007983 Tris buffer Substances 0.000 description 4
- YPCHGLDQZXOZFW-UHFFFAOYSA-N [2-[[4-methyl-3-[[3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propoxy]carbonylamino]phenyl]carbamoyloxymethyl]-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound CC1=CC=C(NC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C)C=C1NC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C YPCHGLDQZXOZFW-UHFFFAOYSA-N 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 4
- 229940117969 neopentyl glycol Drugs 0.000 description 4
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 4
- 229920002647 polyamide Polymers 0.000 description 4
- 239000001294 propane Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000003892 spreading Methods 0.000 description 4
- 230000007480 spreading Effects 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 125000004434 sulfur atom Chemical group 0.000 description 4
- 150000003573 thiols Chemical group 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- ITFGZZGYXVHOOU-UHFFFAOYSA-N n,n-dimethylmethanamine;methyl hydrogen sulfate Chemical compound C[NH+](C)C.COS([O-])(=O)=O ITFGZZGYXVHOOU-UHFFFAOYSA-N 0.000 description 3
- 125000005375 organosiloxane group Chemical group 0.000 description 3
- 239000011941 photocatalyst Substances 0.000 description 3
- 238000000016 photochemical curing Methods 0.000 description 3
- 229920002120 photoresistant polymer Polymers 0.000 description 3
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 239000004945 silicone rubber Substances 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- VYMPLPIFKRHAAC-UHFFFAOYSA-N 1,2-ethanedithiol Chemical compound SCCS VYMPLPIFKRHAAC-UHFFFAOYSA-N 0.000 description 2
- YGKHJWTVMIMEPQ-UHFFFAOYSA-N 1,2-propanedithiol Chemical compound CC(S)CS YGKHJWTVMIMEPQ-UHFFFAOYSA-N 0.000 description 2
- 229940058015 1,3-butylene glycol Drugs 0.000 description 2
- SRZXCOWFGPICGA-UHFFFAOYSA-N 1,6-Hexanedithiol Chemical compound SCCCCCCS SRZXCOWFGPICGA-UHFFFAOYSA-N 0.000 description 2
- PGTWZHXOSWQKCY-UHFFFAOYSA-N 1,8-Octanedithiol Chemical compound SCCCCCCCCS PGTWZHXOSWQKCY-UHFFFAOYSA-N 0.000 description 2
- GJRCLMJHPWCJEI-UHFFFAOYSA-N 1,9-Nonanedithiol Chemical compound SCCCCCCCCCS GJRCLMJHPWCJEI-UHFFFAOYSA-N 0.000 description 2
- SGLYOTGYKDFSSC-UHFFFAOYSA-N 2,2-dimethylpropane-1,3-dithiol Chemical compound SCC(C)(C)CS SGLYOTGYKDFSSC-UHFFFAOYSA-N 0.000 description 2
- PSYGHMBJXWRQFD-UHFFFAOYSA-N 2-(2-sulfanylacetyl)oxyethyl 2-sulfanylacetate Chemical compound SCC(=O)OCCOC(=O)CS PSYGHMBJXWRQFD-UHFFFAOYSA-N 0.000 description 2
- CNDCQWGRLNGNNO-UHFFFAOYSA-N 2-(2-sulfanylethoxy)ethanethiol Chemical compound SCCOCCS CNDCQWGRLNGNNO-UHFFFAOYSA-N 0.000 description 2
- HAQZWTGSNCDKTK-UHFFFAOYSA-N 2-(3-sulfanylpropanoyloxy)ethyl 3-sulfanylpropanoate Chemical compound SCCC(=O)OCCOC(=O)CCS HAQZWTGSNCDKTK-UHFFFAOYSA-N 0.000 description 2
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- LCZVSXRMYJUNFX-UHFFFAOYSA-N 2-[2-(2-hydroxypropoxy)propoxy]propan-1-ol Chemical compound CC(O)COC(C)COC(C)CO LCZVSXRMYJUNFX-UHFFFAOYSA-N 0.000 description 2
- SNZYOYGFWBZAQY-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;2-methyloxirane Chemical compound CC1CO1.CCC(CO)(CO)CO SNZYOYGFWBZAQY-UHFFFAOYSA-N 0.000 description 2
- RSROEZYGRKHVMN-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;oxirane Chemical compound C1CO1.CCC(CO)(CO)CO RSROEZYGRKHVMN-UHFFFAOYSA-N 0.000 description 2
- AJHCCBBKTPDSNT-UHFFFAOYSA-N 2-ethyl-2-(sulfanylmethyl)propane-1,3-dithiol Chemical compound CCC(CS)(CS)CS AJHCCBBKTPDSNT-UHFFFAOYSA-N 0.000 description 2
- BQZJOQXSCSZQPS-UHFFFAOYSA-N 2-methoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OC)C(=O)C1=CC=CC=C1 BQZJOQXSCSZQPS-UHFFFAOYSA-N 0.000 description 2
- TULVMDKDVJGVFG-UHFFFAOYSA-N 2-methyl-2-(sulfanylmethyl)propane-1,3-dithiol Chemical compound SCC(C)(CS)CS TULVMDKDVJGVFG-UHFFFAOYSA-N 0.000 description 2
- BGCQOUJDESLVAJ-UHFFFAOYSA-N 2-methyloctane-1,8-dithiol Chemical compound SCC(C)CCCCCCS BGCQOUJDESLVAJ-UHFFFAOYSA-N 0.000 description 2
- RCPTXQHBPWHDKY-UHFFFAOYSA-N 3-methylpentane-1,5-dithiol Chemical compound SCCC(C)CCS RCPTXQHBPWHDKY-UHFFFAOYSA-N 0.000 description 2
- VNGLVZLEUDIDQH-UHFFFAOYSA-N 4-[2-(4-hydroxyphenyl)propan-2-yl]phenol;2-methyloxirane Chemical compound CC1CO1.C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 VNGLVZLEUDIDQH-UHFFFAOYSA-N 0.000 description 2
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- G02B27/0006—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Definitions
- the present embodiment relates to a laminate having a fine concavo-convex structure, an antireflection article, an image display device, and a touch panel using the same.
- the present application includes Japanese Patent Application Nos. 2012-135981 and 2012-135983 filed in Japan on June 15, 2012, Japanese Patent Application No. 2012-201734 filed in Japan on September 13, 2012, and 2012. Claims priority based on Japanese Patent Application No. 2012-244931 filed in Japan on November 13, 2000, the contents of which are incorporated herein by reference.
- the refractive index of the material In order to lower the refractive index of the material, it is effective to introduce air into the material by some method.
- a method of reducing the refractive index of the film surface for example, a method of forming a fine concavo-convex structure on the film surface is widely known. According to these methods, since the refractive index of the entire surface layer on which the fine concavo-convex structure is formed is determined by the volume ratio between air and the material forming the fine concavo-convex structure, the refractive index can be significantly reduced. It becomes possible. As a result, the reflectance can be reduced even when the number of stacked layers is small.
- an antireflection film in which pyramidal convex portions are continuously formed on the entire film in an antireflection film formed on a glass substrate has been proposed (for example, see Patent Document 1).
- the cross-sectional area of the antireflection film in which pyramid-shaped convex portions (fine concavo-convex structure) are formed changes continuously when the fine concavo-convex structure is cut along a plane parallel to the film surface.
- the refractive index gradually increases from the air side toward the substrate side, it becomes an effective antireflection means.
- the antireflection film exhibits excellent optical performance.
- the antireflection film having the fine concavo-convex structure as described above has antifouling property because it is in contact with air.
- a method for imparting antifouling properties a method of forming a film made of polytetrafluoroethylene on the surface of a fine concavo-convex structure (see, for example, Patent Document 2) or a resin composition containing a fluorine-containing compound is used.
- a method of pressing a stamper having a fine concavo-convex structure on a layer for example, see Patent Document 3.
- antifouling properties are imparted by lowering the surface energy and repelling dirt.
- a method of coating a photocatalyst layer (such as titanium oxide) having a fine concavo-convex structure on the substrate surface see, for example, Patent Document 4
- a hydrophilic film made of an inorganic oxide such as a silicon acid compound on the substrate surface
- a method of forming a film by sputtering for example, see Patent Document 5
- a method of spin-coating an inorganic fine particle solution on the surface of soda glass and then heating and curing
- the attached dirt is floated with water to facilitate wiping.
- Patent Document 7 discloses a photocurable composition comprising a specific fluorine-based surfactant and a polymerizable compound having a specific composition as a coating material for optical disks.
- Patent Document 8 there has been proposed a method of extruding dirt that has entered the recess by lowering the elastic modulus of the material forming the fine uneven structure.
- JP-A-63-75702 Japanese Patent Laid-Open No. 2003-172808 JP 2005-97371 A JP 2001-183506 A JP 2001-315247 A JP 11-217560 A JP 7-316468 A JP 2011-76072 A
- the surface layer may be inferior in scratch resistance, for example, building materials and display applications. There was room for improvement from the viewpoint of practicality as an antireflection article.
- This embodiment is intended to provide a laminate including a surface layer excellent in antifouling properties and scratch resistance that can easily remove dirt.
- One embodiment of the present invention is a laminate including a surface layer having a surface on which a fine concavo-convex structure is formed, wherein the elastic modulus of the surface layer is less than 250 MPa, and the gradient of the friction coefficient of the surface layer is 1. It is a laminate that is 8 ⁇ 10 ⁇ 3 or less.
- One aspect of the present invention is the laminate according to (1), wherein the slope of the friction coefficient of the surface layer is ⁇ 2.0 ⁇ 10 ⁇ 3 or more.
- One embodiment of the present invention is the laminate according to (1) or (2), wherein the slope of the friction coefficient of the surface layer is ⁇ 1.8 ⁇ 10 ⁇ 3 or more and 1.0 ⁇ 10 ⁇ 3 or less. It is.
- One embodiment of the present invention is the laminate according to any one of (1) to (3), wherein the elastic modulus of the surface layer is less than 160 MPa.
- One form of the present invention is the laminate according to any one of (1) to (4), wherein the elastic modulus of the surface layer is less than 100 MPa.
- One embodiment of the present invention is the laminate according to any one of (1) to (5), wherein the water contact angle of the surface layer is 25 ° or less, or 130 ° or more.
- One form of the present invention is the laminate according to any one of (1) to (6), wherein the surface layer includes a layer made of a cured product of the active energy ray-curable resin composition.
- the active energy ray-curable resin composition is a trifunctional or higher polyfunctional (meth) acrylate (A) 1 to 55 parts by mass, a bifunctional (meth) acrylate (B).
- the content of the trifunctional or higher polyfunctional (meth) acrylate (A) is 5 to 40 parts by mass
- the content of the bifunctional (meth) acrylate (B) Is a laminate according to (8), in which is 20 to 80 parts by mass.
- the content of the trifunctional or higher polyfunctional (meth) acrylate (A) is 10 to 30 parts by mass
- the content of the bifunctional (meth) acrylate (B) Is 30 to 70 parts by mass of the laminate according to (8).
- the active energy ray-curable resin composition further contains 3 to 85 parts by mass of silicone (meth) acrylate (C) (provided that the active energy ray-curable resin composition is The total of the polymerizable components is 100 parts by mass, and (A) and (B) are the laminates described in (8) and (8), respectively).
- the active energy ray-curable resin composition further contains 7 to 70 parts by mass of silicone (meth) acrylate (C) (provided that the active energy ray-curable resin composition is The total of the polymerizable components is 100 parts by mass, and (A) and (B) are the laminates described in (9) and (9), respectively.
- One embodiment of the present invention is the laminate according to (7), wherein the active energy ray-curable resin composition includes a compound (D) having an SH group.
- the active energy ray-curable resin composition comprises 0 to 95 parts by mass of a bifunctional or higher polyfunctional (meth) acrylate (E) and a silicone (meth) acrylate (C). 0 to 75 parts by mass, 1 to 60 parts by mass of the SH group-containing compound (D) (provided that the total amount of polymerizable components is 100 parts by mass), and the laminate according to (13).
- One aspect of the present invention is the laminate according to any one of (7) to (14), wherein the surface layer is formed of a layer made of a cured product of the active energy ray-curable resin composition. .
- the surface layer is formed on a layer made of a cured product of the active energy ray-curable resin composition and a layer made of a cured product of the active energy ray-curable resin composition.
- One embodiment of the present invention is the laminate according to any one of (1) to (15), wherein the pitch of the fine uneven structure is 100 nm or more and 250 nm or less.
- One aspect of the present invention is an antireflection article including the laminate according to any one of (1) to (17).
- One embodiment of the present invention is an image display device including the laminate according to any one of (1) to (17).
- One embodiment of the present invention is a touch panel including the laminate according to any one of (1) to (17).
- a laminate including a surface layer excellent in antifouling property and scratch resistance that can easily remove dirt.
- FIG. 1 is a schematic cross-sectional view showing an example of the configuration of the laminate 10 according to the present embodiment.
- the surface layer 12 which consists of hardened
- a fine uneven structure is formed on the surface of the surface layer 12.
- the fine uneven structure is formed on the entire surface of the surface layer, but the fine uneven structure may be formed on a part of the surface of the surface layer. Moreover, when the laminated body 10 has a film shape, fine concavo-convex structures may be formed on both surfaces of the laminated body 10.
- the elastic modulus of the fine uneven structure region that is, the elastic modulus of the surface layer is less than 250 MPa. Further, the elastic modulus of the surface layer is preferably less than 160 MPa, and more preferably 50 MPa or more and 100 MPa or less.
- the elastic modulus of the surface layer is less than 250 MPa, the fine uneven structure is soft, so that the dirt that has entered the recess can be easily pushed out.
- the fine concavo-convex structure is softer when the elastic modulus of the surface layer is less than 160 MPa, it is possible to more easily extrude dirt that has entered the recess.
- the fine concavo-convex structure When the elastic modulus of the surface layer is 50 MPa or more, the fine concavo-convex structure has sufficient hardness, and thus it is possible to effectively prevent the protrusions from being united. When the elastic modulus of the surface layer is 100 MPa or less, the fine concavo-convex structure is sufficiently soft, so that the fine concavo-convex structure can be freely deformed, and dirt entering the concave portions can be further easily removed.
- the gradient of the friction coefficient of the fine concavo-convex structure region that is, the gradient of the friction coefficient of the surface layer is 1.8 ⁇ 10 ⁇ 3 or less.
- the slope of the friction coefficient of the surface layer is preferably ⁇ 2.0 ⁇ 10 ⁇ 3 or more, and preferably ⁇ 1.8 ⁇ 10 ⁇ 3 or more and 1.0 ⁇ 10 ⁇ 3 or less.
- the slope of the friction coefficient of the surface layer is 0.0018 or less, the increase in the friction coefficient is small when the surface layer is rubbed with a cloth or the like, so that the surface layer does not break.
- the slope of the friction coefficient of the surface layer is ⁇ 1.8 ⁇ 10 ⁇ 3 or more, when the surface layer is rubbed with a cloth or the like, the projections of the fine concavo-convex structure do not occur, and the same as before the scratch even after the scratch Antireflection performance can be maintained.
- the slope of the friction coefficient of the surface layer is 1.0 ⁇ 10 ⁇ 3 or less, the increase in the friction coefficient is even smaller when the surface layer is rubbed with a cloth or the like, so that the surface layer is not damaged.
- the water contact angle of the fine uneven structure region that is, the water contact angle of the surface layer is not particularly limited, but is preferably 25 ° or less, or 130 ° or more, and more preferably 15 ° or less, or 135 ° or more.
- the water contact angle of the surface layer is 25 ° or less, since the surface is hydrophilic, dirt can be easily wiped off.
- the water contact angle of the surface layer is 130 ° or more, since the surface energy of the surface layer is small, the dirt can be easily wiped off.
- the water contact angle of the surface layer is 15 ° or less, the surface has high hydrophilicity, so that dirt can be wiped off more easily.
- the surface energy of the surface layer is sufficiently small, so that adhesion of dirt can be suppressed.
- the lower limit of the water contact angle of the surface layer is not particularly limited, but the water contact angle of the surface layer is preferably 5 ° or more, and more preferably 7 ° or more.
- the upper limit of the water contact angle of the surface layer is not particularly limited, but the water contact angle of the surface layer is preferably 150 ° or less, and more preferably 145 ° or less.
- the surface layer can be composed of a cured product of the active energy ray-curable resin composition.
- the outermost surface layer was formed on a layer made of a cured product of the active energy ray-curable resin composition and a layer made of the cured product of the active energy ray-curable resin composition. And a surface treatment layer as a layer.
- the active energy ray-curable resin composition contains 1 to 55 parts by mass of a trifunctional or higher polyfunctional (meth) acrylate (A) and 10 to 95 parts by mass of a bifunctional (meth) acrylate (B) (provided that The total of the polymerizable components in the active energy ray-curable resin composition is preferably 100 parts by mass).
- the active energy ray-curable resin composition preferably further contains 3 to 85 parts by mass of silicone (meth) acrylate (C). That is, the active energy ray-curable resin composition is, for example, 1 to 55 parts by mass of a trifunctional or higher polyfunctional (meth) acrylate (A) and 10 to 95 parts by mass of a bifunctional (meth) acrylate (B). It is preferable to contain 3 to 85 parts by mass of silicone (meth) acrylate (C) (provided that the total amount of polymerizable components in the active energy ray-curable resin composition is 100 parts by mass). Silicon (meth) acrylate (C) is excluded from trifunctional or higher polyfunctional (meth) acrylate (A) and bifunctional (meth) acrylate (B).
- the trifunctional or higher polyfunctional (meth) acrylate is a group selected from an acryloyl group (CH 2 ⁇ CHCO—) and a methacryloyl group (CH 2 ⁇ C (CH 3 ) CO—) in the molecule. It means a compound having two or more.
- the bifunctional (meth) acrylate means a compound having two groups selected from an acryloyl group (CH 2 ⁇ CHCO—) and a methacryloyl group (CH 2 ⁇ C (CH 3 ) CO—) in the molecule. To do.
- the polyfunctional (meth) acrylate (A) having 3 or more functions is preferably 4 or more and more preferably 5 or more.
- Examples of the trifunctional or higher polyfunctional (meth) acrylate (A) include ditrimethylolpropane tetra (meth) acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol ethoxytetra (meth) acrylate, dipentaerythritol hydroxypenta ( (Meth) acrylate, dipentaerythritol hexa (meth) acrylate, succinic acid / trimethylolethane / acrylic acid 1: 2: 4 condensation reaction product, urethane acrylate, polyether acrylate, modified epoxy acrylate, polyester Examples include acrylates.
- urethane acrylates examples include “EBECRYL220”, “EBECRYL1290”, “EBECRYL1290K”, “EBECRYL5129”, “EBECRYL8210”, “EBECRYL8301”, and “KRM8200” manufactured by Daicel Cytec.
- polyether acrylates examples include “EBECRYL81” manufactured by Daicel-Cytec.
- modified epoxy acrylates examples include “EBECRYL3416” manufactured by Daicel-Cytec.
- polyester acrylates examples include “EBECRYL450”, “EBECRYL657”, “EBECRYL800”, “EBECRYL810”, “EBECRYL812”, “EBECRYLEC”, “EBECRYL8830”, “EBECRYLEC”, and “EBECRYLEC”. ".
- examples of the trifunctional or more polyfunctional (meth) acrylate (A) include a monomer obtained by adding ethylene oxide or propylene oxide to the monomer. These polyfunctional (meth) acrylates (A) may be used alone or in combination of two or more.
- the trifunctional or higher polyfunctional (meth) acrylate (A) is preferably 1 to 55 parts by mass when the total of the polymerizable components in the active energy ray-curable resin composition is 100 parts by mass.
- the amount is more preferably 40 to 40 parts by mass, and further preferably 10 to 30 parts by mass.
- bifunctional (meth) acrylate (B) examples include bifunctional acrylates having polyalkylene glycol such as bifunctional acrylates having polyethylene glycol, bifunctional acrylates having polypropylene glycol, and bifunctional acrylates having polybutylene glycol. preferable.
- bifunctional acrylates having polyethylene glycol include Aronix M-240, Aronix M-260 (manufactured by Toagosei Co., Ltd.), NK ester AT-20E, NK ester ATM-35E (manufactured by Shin-Nakamura Chemical Co., Ltd.), and the like. Can be mentioned.
- bifunctional acrylates having polypropylene glycol examples include APG-400 and APG-700 (manufactured by Shin-Nakamura Chemical Co., Ltd.).
- Specific examples of the bifunctional acrylate having polybutylene glycol include A-PTMG-650 (manufactured by Shin-Nakamura Chemical Co., Ltd.).
- polyethylene glycol diacrylate is preferably used from the viewpoint that better antifouling properties can be obtained.
- polyethylene glycol diacrylate as the bifunctional (meth) acrylate (B), the molecular mobility of the resin on the surface layer is improved, the dirt entering the recesses is more easily pushed out, and good antifouling properties are expressed.
- the total of the average repeating units of polyethylene glycol chains present in one molecule of polyethylene glycol diacrylate is preferably 6 to 40, more preferably 9 to 30, and still more preferably 12 to 20. If the average repeating unit of the polyethylene glycol chain is 6 or more, the mobility of the molecule is maintained and good antifouling properties are exhibited. If the average repeating unit of the polyethylene glycol chain is 40 or less, the compatibility with the trifunctional or higher polyfunctional (meth) acrylate (A) is good.
- bifunctional acrylates having polyalkylene glycol polypropylene glycol diacrylate and polybutylene glycol diacrylate are also preferably used from the viewpoint of compatibility.
- silicone (meth) acrylate (C) such as silicone di (meth) acrylate having low hydrophilicity by using polypropylene glycol diacrylate or polybutylene glycol diacrylate as the bifunctional (meth) acrylate (B) Is improved, and a transparent active energy ray-curable resin composition can be obtained.
- These bifunctional (meth) acrylates (B) may be used alone or in combination of two or more.
- the bifunctional (meth) acrylate (B) is preferably 10 to 95 parts by mass, and 20 to 80 parts by mass when the total of the polymerizable components in the active energy ray-curable resin composition is 100 parts by mass. More preferably, it is more preferably 30 to 70 parts by mass.
- a mobility can be provided to a convex part and antifouling property is expressed effectively.
- 80 mass parts or less the fall of an elasticity modulus is suppressed and the protrusion unity of a convex part can be suppressed.
- the silicone (meth) acrylate (C) is selected from an acryloyl group (CH 2 ⁇ CHCO—) and a methacryloyl group (CH 2 ⁇ C (CH 3 ) CO—) at the side chain and / or terminal of the compound having an organosiloxane structure.
- the compound is not particularly limited as long as it has at least one group.
- the silicone (meth) acrylate (C) is preferably selected from the viewpoint of the compatibility between the trifunctional or higher polyfunctional (meth) acrylate (A) and the bifunctional (meth) acrylate (C).
- the compatible segment examples include a polyalkylene oxide structure, a polyester structure, and a polyamide structure.
- One of these compatible segments may be contained alone in the silicone (meth) acrylate (C), or two or more thereof may be contained.
- Silicone (meth) acrylate (C) may be used after being diluted from the aspect of handling. As the diluent, those having reactivity in terms of bleeding out from a cured product are preferable. Handling of silicone (meth) acrylate (C) by mixing trifunctional or higher polyfunctional (meth) acrylate (A) or bifunctional (meth) acrylate (B) with silicone (meth) acrylate (C) Can also be improved.
- silicone (meth) acrylate (C) examples include the Silaplane series manufactured by Chisso Corporation, and the silicone diacrylates “X-22-164” and “X-22” manufactured by Shin-Etsu Chemical Co., Ltd. -1602 ",” BYK-UV3500 “,” BYK-UV3570 “manufactured by Big Chemie Japan, and the TEGO Rad series manufactured by Evonik Degussa Japan are preferred. These silicone (meth) acrylates (C) may be used alone or in combination of two or more.
- the silicone (meth) acrylate (C) is preferably 3 to 85 parts by mass, preferably 7 to 70 parts by mass, when the total amount of the polymerizable components in the active energy ray-curable resin composition is 100 parts by mass. More preferably, it is more preferably 20 to 70 parts by mass.
- the content of silicone (meth) acrylate (C) is 3 parts by mass or more, the water contact angle of the surface layer having a fine concavo-convex structure tends to be 130 ° or more, and the laminate is imparted with antifouling properties.
- the elasticity modulus of the grade which can transfer a fine uneven structure to a surface layer can be provided by content of silicone (meth) acrylate (C) being 85 mass parts or less.
- the water contact angle of a surface layer becomes easy to become 135 degrees or more, and the antifouling property of a laminated body improves.
- the viscosity of an active energy ray curable resin composition is suppressed, and handling improves.
- the compatibility with the component in an active energy ray-curable resin composition, especially (A) and (B) becomes favorable, and the water repellency of the surface layer and the flexibility of the projections are improved. In order to improve, the outstanding antifouling property is expressed.
- the active energy ray-curable resin composition may contain a monofunctional monomer.
- the monofunctional monomer is preferably selected in consideration of the compatibility with the trifunctional or higher polyfunctional (meth) acrylate (A) and the bifunctional (meth) acrylate (B).
- monofunctional (meth) acrylates having a polyethylene glycol chain in the ester group monofunctional (meth) acrylates having a hydroxyl group in the ester group such as hydroxyalkyl (meth) acrylate, monofunctional acrylamides, methacrylamide propyl
- hydrophilic monofunctional monomers such as cationic monomers such as trimethylammonium methyl sulfate or methacryloyloxyethyl trimethylammonium methyl sulfate.
- monofunctional monomer specifically, monofunctional (meth) acrylates “M-20G”, “M-90G”, “M-230G” (manufactured by Shin-Nakamura Chemical Co., Ltd.), etc. may be used. it can.
- the active energy ray-curable resin composition may be added with viscosity modifiers such as acryloylmorpholine and vinylpyrrolidone, and adhesion improvers such as acryloyl isocyanates that improve adhesion to transparent substrates. it can.
- viscosity modifiers such as acryloylmorpholine and vinylpyrrolidone
- adhesion improvers such as acryloyl isocyanates that improve adhesion to transparent substrates. it can.
- the content of the monofunctional monomer in the active energy ray-curable resin composition is, for example, 0.1 to 20 when the total of the polymerizable components in the active energy ray-curable resin composition is 100 parts by mass.
- the amount is preferably part by mass, and more preferably 5 to 15 parts by mass.
- a polymer (oligomer) having a low degree of polymerization obtained by polymerizing one or more monofunctional monomers may be added to the active energy ray-curable resin composition.
- a polymer having a low degree of polymerization include monofunctional (meth) acrylates having a polyethylene glycol chain in an ester group (for example, “M-230G”, manufactured by Shin-Nakamura Chemical Co., Ltd.) And 40/60 copolymer oligomers of methacrylamidopropyltrimethylammonium methyl sulfate (for example, “MG polymer” manufactured by MRC Unitech).
- the active energy ray-curable resin composition contains fine particles such as an antistatic agent, a release agent, an ultraviolet absorber, and colloidal silica in addition to the above-mentioned various monomers and polymers having a low polymerization degree. It may be.
- the active energy ray-curable resin composition may contain a release agent.
- a release agent When a release agent is contained in the active energy ray-curable resin composition, good release properties can be maintained when the laminate is continuously produced.
- the mold release agent include (poly) oxyalkylene alkyl phosphate compounds. In particular, when an anodized alumina mold is used, the release agent is easily adsorbed on the surface of the mold due to the interaction between the (poly) oxyalkylene alkyl phosphate compound and alumina.
- Examples of commercially available (poly) oxyalkylene alkyl phosphate compounds include “JP-506H” (trade name) manufactured by Johoku Chemical Industry Co., Ltd., “Mold With INT-1856” (trade name) manufactured by Accel Corporation, “TDP-10”, “TDP-8”, “TDP-6”, “TDP-2”, “DDP-10”, “DDP-8”, “DDP-6”, “DDP” manufactured by Nikko Chemicals Co., Ltd. -4 ",” DDP-2 “,” TLP-4 “,” TCP-5 ",” DLP-10 “(trade name), and the like.
- the release agent contained in the active energy ray-curable resin composition may be used alone or in combination of two or more.
- the content of the release agent contained in the active energy ray-curable resin composition is preferably 0.01 to 2.0 parts by mass, and 0.05 to 0. 0 parts by mass with respect to 100 parts by mass of the polymerizable component. More preferably, it is 2 parts by mass. If content of a mold release agent is 0.01 mass part or more, the mold release property from the mold of the articles
- the distance w1 (pitch) between adjacent convex portions of the fine concavo-convex structure is preferably not more than the wavelength of visible light, more preferably 100 nm or more and 300 nm or less, and 150 nm or more and 250 nm or less. More preferably, it is more preferably 170 nm or more and 230 nm or less.
- the thickness is sufficiently smaller than the wavelength of visible light, so that the scattering of visible light is effectively suppressed, and excellent antireflection properties are easily imparted.
- the “visible wavelength” means a wavelength of 400 nm.
- the height d1 of the convex portion 13 is preferably 100 nm or more, and more preferably 150 nm or more. By setting the height d1 to be 100 nm or more, it is possible to prevent an increase in the minimum reflectance and an increase in the reflectance at a specific wavelength, and it becomes easy to impart good antireflection properties.
- the aspect ratio (height of the protrusions 13 / interval between adjacent protrusions) is preferably 0.5 to 5.0, more preferably 0.6 to 2.0, and 0.8 More preferably, it is -1.2.
- the aspect ratio is 0.5 or more, an increase in the minimum reflectance and an increase in the reflectance at a specific wavelength can be suppressed, and good antireflection properties are exhibited.
- the aspect ratio is 5 or less, the convex portions of the fine concavo-convex structure are not easily broken when the surface layer is rubbed, so that good scratch resistance and antireflection properties are exhibited.
- the “height of the convex portion” is a vertical distance from the tip 13a of the convex portion 13 to the bottom portion 14a of the adjacent concave portion 14 as shown in FIG.
- the shape of the convex portion 13 of the fine concavo-convex structure is not particularly limited, but in order to obtain an antireflection function that continuously increases the refractive index and achieves both low reflectance and low wavelength dependence, FIG.
- the occupancy of the cross-sectional area continuously increases toward the substrate side when cut by a plane parallel to the film surface, such as a substantially conical shape as shown or a bell shape as shown in FIG.
- a structure is preferred.
- a plurality of finer convex portions may be combined to form the fine concavo-convex structure.
- the method for forming the fine concavo-convex structure on the surface of the laminate is not particularly limited, and examples thereof include a method of injection molding or press molding using a stamper on which the fine concavo-convex structure is formed.
- a method for forming a fine concavo-convex structure for example, an active energy ray curable resin composition is filled between a stamper on which a fine concavo-convex structure is formed and a transparent substrate, and active energy ray curing is performed by active energy ray irradiation.
- active energy ray curing is performed by active energy ray irradiation.
- an active energy ray curable resin composition is filled between a stamper on which a fine concavo-convex structure is formed and a transparent substrate, and the active energy ray curable resin composition is filled with the unevenness of the stamper.
- a method of releasing the mold after transferring the shape and then irradiating an active energy ray to cure the active energy ray-curable resin composition is also included.
- the active energy ray-curable resin composition is filled between the stamper on which the fine concavo-convex structure is formed and the transparent substrate, and the active energy ray is irradiated.
- a method of releasing the mold after curing the active energy ray-curable resin composition to transfer the uneven shape of the stamper is preferably used.
- the substrate is not particularly limited, but is preferably a transparent substrate.
- the transparent substrate is not particularly limited as long as it transmits light.
- the transparent substrate material include methyl methacrylate (co) polymer, polycarbonate, styrene (co) polymer, methyl methacrylate-styrene copolymer, cellulose diacetate, cellulose triacetate, cellulose acetate butyrate, polyester, polyamide , Polyimide, polyether sulfone, polysulfone, polypropylene, polymethylpentene, polyvinyl chloride, polyvinyl acetal, polyether ketone, polyurethane, glass, crystal and the like.
- the transparent substrate may be produced by any method of injection molding, extrusion molding, and cast molding.
- the shape of the transparent substrate is not particularly limited and can be appropriately selected depending on the application.
- the application is an antireflection film, a sheet or film is preferable.
- the surface of the transparent substrate is subjected to various coatings and corona discharge treatment, for example. It may be.
- the method for producing the stamper on which the fine concavo-convex structure is formed is not particularly limited, and examples thereof include an electron beam lithography method and a laser beam interference method.
- an appropriate photoresist film on an appropriate support substrate After applying an appropriate photoresist film on an appropriate support substrate, exposure is performed using light such as an ultraviolet laser, an electron beam, or X-ray, followed by development to form a mold having a fine concavo-convex structure. .
- This mold can also be used as a stamper. It is also possible to form a fine concavo-convex structure directly on the support substrate itself by selectively etching the support substrate through dry etching through the photoresist layer and then removing the photoresist layer.
- anodized porous alumina can be used as a stamper.
- an alumina nanohole array obtained by a method of anodizing aluminum at a predetermined voltage in an electrolyte such as oxalic acid, sulfuric acid, phosphoric acid, etc. is used as a stamper. May be. According to this method, after anodizing high-purity aluminum for a long time at a constant voltage, pores having very high regularity can be formed in a self-organizing manner by once removing the oxide film and anodizing again. .
- a replica mold may be produced from an original mold having a fine concavo-convex structure by electroforming or the like and used as a stamper.
- the shape of the stamper thus produced is not particularly limited, but may be a flat plate shape or a roll shape, but from the viewpoint of continuously transferring the fine concavo-convex structure to the active energy ray-curable resin composition.
- a roll shape is preferred.
- the active energy ray-curable resin composition in the present embodiment can appropriately contain a monomer having a radical polymerizable and / or cationic polymerizable bond in the molecule, a polymer having a low polymerization degree, and a reactive polymer. It is cured by a polymerization initiator described later. Moreover, the active energy ray-curable resin composition may include a non-reactive polymer.
- active energy ray used for curing the active energy ray-curable resin composition include visible light, ultraviolet light, electron beam, plasma, and infrared light.
- the irradiation of the active energy ray is performed using, for example, a high-pressure mercury lamp.
- Cumulative irradiation energy amount is cured with an active energy ray curable resin composition is not particularly limited as long as the amount of energy proceeds, for example, preferably 100 ⁇ 5000mJ / cm 2, more preferably 200 ⁇ 4000mJ / cm 2 400 to 3200 mJ / cm 2 is more preferable. Since the integrated light irradiation amount of the active energy ray may affect the degree of cure of the active energy ray-curable resin composition, it is desirable to appropriately select and irradiate the light.
- the polymerization initiator (photopolymerization initiator) used for curing (photocuring) the active energy ray-curable resin composition is not particularly limited, and examples thereof include 2,2-diethoxyacetoxyphenone and p-dimethylacetophenone.
- the active energy ray-curable resin composition may be cured using a combination of photocuring and heat curing.
- the thermal polymerization initiator to be added when thermosetting is used is not particularly limited.
- the laminated body of the present embodiment includes, for example, an antireflection article such as an antireflection film (including an antireflection film) and an antireflection body, an image display device, a touch panel, an optical waveguide, a relief hologram, a solar cell, a lens, and a polarization separation element. Further, it can be used for optical articles such as a member for improving the light extraction rate of organic electroluminescence, and cell culture sheets.
- the laminate of the present embodiment is particularly suitable for use as an antireflection article such as an antireflection film (including an antireflection film) or an antireflection body.
- the laminate of this embodiment is a laminate comprising a surface layer excellent in antifouling properties and scratch resistance that can easily remove dirt
- the laminate of this embodiment is used as an antireflection article, an image display device, a touch panel, etc. If it is installed on the outermost surface, dirt such as sebum that adheres at the time of use is difficult to adhere and easy to remove, and good antireflection performance can be exhibited. Furthermore, since dirt can be easily removed without using water or alcohol on the surface, an article excellent in practical use can be obtained.
- an image display device such as a liquid crystal display device, a plasma display panel, an electroluminescence display, a cathode tube display device, a lens, a show window, an automobile meter cover, an eyeglass lens, etc. Used by sticking to the surface of the object.
- a laminate can be produced in advance using a transparent substrate having a shape suitable for the application, and this can be used as a member constituting the surface of the object.
- the object is an image display device
- an antireflection article may be attached to the front plate, or the front plate itself is formed from the laminate of the present embodiment. You can also.
- the surface layer can be composed of a cured product of the active energy ray-curable resin composition.
- the active energy ray-curable resin composition has a compound having an SH group (D ) Is preferably included.
- the SH group is a thiol group, a hydroxyl group, a mercapto group, or a sulfhydryl group.
- the elastic modulus can be lowered while maintaining the crosslinking density of the cured product, so that the flexibility can be imparted to the protrusions while maintaining the shape of the protrusions, and dirt accumulated in the recesses can be removed. Will improve.
- the active energy ray-curable fat composition has 0 to 95 parts by mass of a bifunctional or higher polyfunctional (meth) acrylate (E) and 0 to the above-mentioned silicone (meth) acrylate (C). It is preferable to contain 1 to 60 parts by weight of the compound (D) having SH group and 75 parts by weight (however, the total of the polymerizable components is 100 parts by weight). Silicone (meth) acrylate (C) is excluded from bifunctional or higher polyfunctional (meth) acrylate (E).
- the polyfunctional (meth) acrylate (E) having two or more functions means a group selected from an acryloyl group (CH 2 ⁇ CHCO—) and a methacryloyl group (CH 2 ⁇ C (CH 3 ) CO—) in the molecule.
- the polyfunctional (meth) acrylate (E) having two or more functions includes ethylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, isocyanuric acid ethylene oxide-modified di (meth) acrylate, triethylene glycol di ( (Meth) acrylate, diethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, 1,5-pentanediol di (meth) acrylate, 1,3-butylene glycol Di (meth) acrylate, polybutylene glycol di (meth) acrylate, 2,2-bis (4- (meth) acryloxypolyethoxyphenyl) propane, 2,2-bis (4- (meth) acryloxyethoxyphenyl) Professional 2,2-bis (4- (3- (meth) acryloxy-2-hydroxypropoxy) phenyl) propane,
- the bifunctional or higher polyfunctional (meth) acrylate (E) is preferably 0 to 95 parts by mass when the total of the polymerizable components in the active energy ray-curable resin composition is 100 parts by mass, More preferably, it is -90 parts by mass, and particularly preferably 40-90 parts by mass. If content of bifunctional or more polyfunctional (meth) acrylate (E) is 0 mass part or more and 95 mass parts or less, the excessive fall of an elasticity modulus can be suppressed and the shape of arium
- a bifunctional or higher polyfunctional (meth) acrylate (E) to the composition, that is, if its content exceeds 0 parts by mass, the elastic modulus can be easily suppressed, and the shape of the protrusions can be reduced. Easy to maintain.
- content of polyfunctional (meth) acrylate (E) more than bifunctional is 40 mass parts or more, the fall of an elasticity modulus can be suppressed and coalescence of a proceedings
- content of bifunctional or more polyfunctional (meth) acrylate (E) is 95 mass parts or less, an elastic modulus falls and a stain
- the silicone (meth) acrylate (C) is preferably 0 to 75 parts by mass when the total of the polymerizable components in the active energy ray-curable resin composition is 100 parts by mass. More preferably, it is ⁇ 70 parts by mass.
- the content of the silicone (meth) acrylate (C) is 0 part by mass or more and 75 parts by mass or less, water repellency is imparted and the antifouling property is further improved.
- the silicone (meth) acrylate (C) is added to the composition, that is, if its content exceeds 0 parts by mass, water repellency is more effectively imparted and antifouling properties are improved.
- silicone (meth) acrylate (C) when content of silicone (meth) acrylate (C) is 5 mass parts or more, since the surface energy of a surface layer falls and the contact angle with respect to water will be 130 degrees or more, antifouling property improves further. Moreover, when content of silicone (meth) acrylate (C) is 75 mass parts or less, since compatibility with another component becomes good, transparency improves. Moreover, when content of silicone (meth) acrylate (C) is 70 mass parts or less, the viscosity of an active energy ray-curable resin composition is suppressed, and handling improves.
- the compound (D) containing an SH group is not particularly limited as long as it is a compound containing an SH group, but is a compound containing two or more SH groups in order to increase the crosslinking density of the surface layer and maintain the strength. It is preferable that the SH group is a secondary thiol from the viewpoint of storage stability of the active energy ray-curable resin composition.
- Examples of the compound having two or more SH groups include 1,2-ethanedithiol, 1,2-propanedithiol, 1,3-propanedithiol, 1,4-butanedithiol, 1,6-hexanedithiol, 1, 7-heptanedithiol, 1,8-octanedithiol, 1,9-nonanedithiol, 1,10-decanedithiol, 1,12-dodecanedithiol, 2,2-dimethyl-1,3-propanedithiol, 3-methyl- 1,5-pentanedithiol, 2-methyl-1,8-octanedithiol, 1,4-cyclohexanedithiol, 1,4-bis (mercaptomethyl) cyclohexane, 1,1-cyclohexanedithiol, 1,2-cyclohexanedithiol, Bicyclo [2,2,1] hepta-exo-cis-2,3-
- Examples of the compound having secondary thiol include Karenz MT PE1, Karenz MT NR1, Karenz MT BD1 (trade name, manufactured by Showa Denko KK).
- the SH group-containing compound (D) is preferably 1 to 60 parts by mass, preferably 1 to 15 parts by mass, when the total amount of polymerizable components in the active energy ray-curable resin composition is 100 parts by mass. It is more preferable that If the content of the SH group-containing compound (D) is 1 part by mass or more, the elastic modulus of the surface layer can be lowered while maintaining the cross-linking density, so that it becomes easy to extrude dirt from the recess, resulting in lamination Sufficient antifouling property can be imparted to the body, and the restoring force of the shape of the convex portion can be maintained.
- content of the compound (D) containing SH group is 60 mass parts or less, the storage stability of an active energy ray-curable resin composition can be maintained. Moreover, when content of the compound (D) containing SH group is 15 mass parts or less, the fall of the elasticity modulus of a surface layer can be suppressed more effectively, and coalescence of a convex part can be prevented.
- the active energy ray-curable resin composition may contain a monofunctional monomer.
- the monofunctional monomer is desirably selected in consideration of compatibility with the bifunctional or higher polyfunctional (meth) acrylate (E) and the silicone (meth) acrylate (C).
- monofunctional monomers include monofunctional (meth) acrylates having a polyethylene glycol chain in the ester group, monofunctional (meth) acrylates having a hydroxyl group in the ester group such as hydroxyalkyl (meth) acrylate, and monofunctional Preferred examples include hydrophilic monofunctional monomers such as cationic monomers such as acrylamides, methacrylamidopropyltrimethylammonium methyl sulfate or methacryloyloxyethyltrimethylammonium methyl sulfate.
- monofunctional monomers include monofunctional (meth) acrylates “M-20G”, “M-90G”, and “M-230G” (manufactured by Shin-Nakamura Chemical Co., Ltd., all trade names). Etc. can be used. From the viewpoint of improving antifouling properties, alkyl mono (meth) acrylate, silicone (meth) acrylate, and fluorinated alkyl (meth) acrylate are preferably used.
- monofunctional monomer include “Blemmer LA”, “Blemmer CA”, “Blemmer SA” (all trade names) manufactured by NOF Corporation, and “X” manufactured by Shin-Etsu Chemical Co., Ltd. -24-2401 ",” X-22-174DX "(both trade names),” C10GACRY "(trade name) manufactured by Ex Floor Research, etc. can be used.
- the surface layer is a surface treatment as the outermost layer formed on the layer made of the cured product of the above-mentioned active energy ray-curable resin composition and the layer made of the cured product of the active energy ray-curable resin composition. It can also consist of layers.
- FIG. 3 is a schematic cross-sectional view showing an example of the configuration of the laminate 110 according to the present embodiment.
- a layer (hereinafter also referred to as a cured product layer) 112 made of a cured product of the active energy ray-curable resin composition is formed on a transparent substrate 111, and the cured product layer 112 is formed on the cured product layer 112.
- a surface treatment layer 113 is formed as the outermost surface layer.
- the cured product layer 112 has a fine uneven structure on the surface side, and the surface treatment layer 113 is formed along the fine uneven structure.
- the surface layer 104 includes a cured product layer 112 and a surface treatment layer 113.
- the shape of the fine concavo-convex structure is not limited to the shape shown in FIG. 3, and may be a shape as shown in FIG. 4 or another shape.
- the water contact angle of the fine relief structure region that is, the water contact angle of the surface treatment layer is preferably 130 ° or more, and more preferably 135 ° or more.
- the surface energy is sufficiently small so that the dirt can be easily wiped off.
- the water contact angle of the surface treatment layer is 135 ° or more, the surface energy is sufficiently small, so that the adhesion of dirt can be suppressed.
- the upper limit of the water contact angle of the surface treatment layer is not particularly limited, but is preferably 150 ° or less, and more preferably 145 ° or less.
- a compound having an alkyl group, a polydimethylsiloxane structure or a fluorinated alkyl group is preferably used.
- the material for the surface treatment layer is preferably a compound having a reactive group such as silane, alkoxysilane, silazane, and (meth) acrylate, from the viewpoint of adhesion to the fine concavo-convex structure.
- Such compounds include “KBM” series, “KBE” series, “X” series manufactured by Shin-Etsu Chemical Co., Ltd., “BYK” series manufactured by Big Chemie Japan, and “ Preferable examples include TEGO Rad series, “FG” series, “FS” series manufactured by Fluoro Technology.
- the material of the surface treatment layer can be applied on the cured product by a general method such as dipping, spraying, brushing, spin coating or the like.
- a pretreatment of the fine relief structure region examples include introduction of a functional group on the surface of the fine concavo-convex structure by silica vapor deposition or plasma, coating of a primer containing a compound having good reactivity with the surface treatment layer, and the like.
- the thickness of the surface treatment layer is preferably 100 nm or less from the viewpoint of maintaining the antireflection performance of the fine concavo-convex structure.
- the presence of the surface treatment layer can be confirmed from the fact that the spectrum changes depending on the incident angle in the angle variable ATR measurement, or from the cross-sectional observation by TEM.
- the laminate according to the present embodiment is a laminate comprising a surface layer having a fine concavo-convex structure on the surface, wherein the elastic modulus of the surface layer is less than 200 MPa, and the water contact angle of the surface layer is 25 ° or less.
- the surface layer contains a cured product of an active energy ray-curable resin composition
- the cured product of the active energy ray-curable resin composition is a polyfunctional (meth) acrylate of 5 to 55 parts by mass and a polyethylene glycol having a functionality of 3 or more. It is preferable to contain a polymer of a polymerizable component containing 45 to 95 parts by mass of diacrylate (the average repeating unit of ethylene glycol is 6 to 40) (provided that the total of the polymerizable components is 100 parts by mass).
- the laminate according to the present embodiment can easily remove dirt without using water or alcohol on the surface, and is excellent in antifouling property.
- FIG. 1 is a longitudinal sectional view showing an example of a laminate according to this embodiment.
- the laminated body 10 shown in FIG. 1 has a surface layer 12 formed on a transparent base material 11 described later.
- a fine relief structure is formed on the surface of the surface layer 12.
- the surface layer 12 contains the hardened
- the interval (pitch) w1 between adjacent convex portions 13 in FIG. 1 is preferably not more than the wavelength of visible light, more preferably not less than 100 nm and not more than 300 nm, and more preferably 150 nm.
- the thickness is more preferably 250 nm or less, and particularly preferably 170 nm or more and 230 nm or less.
- the pitch is 150 nm or more, even if the elastic modulus of the surface layer is less than 200 MPa, it is possible to further prevent the protrusions 13 from protruding together.
- wavelength of visible light means a wavelength of 400 nm.
- the interval between adjacent convex portions indicates the interval w ⁇ b> 1 from the front end 13 a of the convex portion to the front end 13 a of the adjacent convex portion.
- the height d1 of the convex portion 13 in FIG. 1 is preferably 100 nm or more, more preferably 120 nm or more, further preferably 150 nm or more, and 170 nm or more. It is particularly preferred.
- the height d1 of the convex portion 13 is 100 nm or more, the minimum reflectance does not increase or the reflectance at a specific wavelength does not increase, and it is sufficient even when the laminate is used as an antireflection article. Antireflection property can be obtained.
- the upper limit of the height d1 of the convex part 13 is not specifically limited, For example, it can be 1 micrometer or less.
- the height of a convex part shows the perpendicular distance d1 from the front-end
- the aspect ratio (height d1 / convex portion 13 / interval w1 between adjacent convex portions 13) is preferably 0.5 to 5.0, more preferably 0.6 to 2.0, It is more preferably 0.7 to 1.5, and particularly preferably 0.8 to 1.2.
- the aspect ratio is greater than 0.5, the minimum reflectance does not increase or the reflectance at a specific wavelength does not increase. Even when the laminate is used as an antireflection article, sufficient antireflection Sex is obtained. Further, when the aspect ratio is smaller than 5.0, the convex portion is not easily broken even when rubbed, so that the scratch resistance is improved and sufficient antireflection property is exhibited.
- the distance between adjacent protrusions and the height of the protrusions were determined by depositing platinum on the fine uneven structure for 10 minutes, and then using a scanning electron microscope (trade name: “JSM-7400F”, manufactured by JEOL Ltd.). It is the average value measured 10 points each by using and observing on the conditions of the acceleration voltage 3.00kv.
- the elastic modulus of the surface layer according to this embodiment is less than 200 MPa.
- the elastic modulus of the surface layer is preferably 40 MPa or more and 180 MPa or less, more preferably 60 MPa or more and 170 MPa or less, further preferably 90 MPa or more and 160 MPa or less, and 100 MPa or more and 150 MPa or less. Particularly preferred.
- the elastic modulus of the surface layer is 40 MPa or more, it is possible to prevent the protrusions of the convex portions of the fine concavo-convex structure from being united.
- the elastic modulus of the surface layer is 90 MPa or more, the fine concavo-convex structure is sufficiently hard, so that it is possible to further prevent the protrusions from being united.
- the elastic modulus of the surface layer is 150 MPa or less, the fine concavo-convex structure is sufficiently soft, so that the fine concavo-convex structure can be freely deformed, dirt entering the concave portions can be removed more easily, and antifouling properties can be obtained. It becomes good.
- the elastic modulus of the surface layer is a value measured by the following method.
- the irradiation surface of the surface layer was applied while increasing the load under the condition of 50 mN / 10 seconds using “FISCHERSCOPE® HM2000” (trade name, manufactured by Fischer), and held at 50 mN for 60 seconds. Unload under the same conditions as the increase.
- the elastic modulus is calculated by extrapolation using points at which 65% and 95% of the load is applied.
- the active energy ray-curable resin composition as a surface layer material is sandwiched between two sheets of glass, and activated by irradiating ultraviolet rays with an energy of an integrated light irradiation amount of 3000 mJ / cm 2.
- the energy ray curable resin composition may be photocured to prepare a cured product of an active energy ray curable resin composition having a thickness of 500 ⁇ m, and the elastic modulus may be calculated by measuring the irradiated surface of the cured product in the same manner as described above. .
- the water contact angle of the surface layer according to this embodiment is 25 ° or less, preferably 20 ° or less, more preferably 15 ° or less, and further preferably 10 ° or less.
- the water contact angle of the surface layer is 25 ° or less, the surface of the laminate is hydrophilized, and the attached dirt can be wiped off with water as described in Japanese Patent No. 4687718.
- the lower the water contact angle of the surface layer the better.
- the lower limit is not particularly limited, but can be, for example, 1 ° or more, and preferably 3% or more.
- the water contact angle of the surface layer is a value obtained by dropping 1 ⁇ l of water onto the surface of the surface layer using an automatic contact angle measuring device (manufactured by KRUSS) and calculating the contact angle after 7 seconds by the ⁇ / 2 method. It is.
- the laminate according to the present embodiment can include a base material.
- the base material 11 can be provided adjacent to the surface layer 12 like the laminated body 10 shown in FIG.
- the active energy ray-curable resin composition according to the present embodiment appropriately includes a monomer having a radical polymerizable and / or cationic polymerizable bond in the molecule, a polymer having a low polymerization degree, and a reactive polymer. It can be cured by a polymerization initiator. Moreover, the active energy ray-curable resin composition according to the present embodiment may include a non-reactive polymer.
- the active energy ray-curable resin composition according to the present embodiment comprises 5 to 55 parts by weight of a trifunctional or higher polyfunctional (meth) acrylate and polyethylene glycol diacrylate (average repeating unit of ethylene glycol is 6 to 40) 45 to 45 parts. It is preferable to contain a polymerizable component containing 95 parts by mass (provided that the total of the polymerizable components is 100 parts by mass). Thereby, the elastic modulus of the surface layer can be less than 200 MPa.
- (meth) acrylate shows an acrylate or a methacrylate.
- the polymerizable component refers to a compound having a polymerizable functional group.
- the trifunctional or higher polyfunctional (meth) acrylate is not particularly limited, but is preferably a tetrafunctional or higher polyfunctional (meth) acrylate, more preferably a pentafunctional or higher polyfunctional (meth) acrylate. .
- the trifunctional or higher polyfunctional (meth) acrylate contained in the polymerizable component is preferably 5 to 55 parts by mass, preferably 10 to 50 parts by mass when the total of the polymerizable components is 100 parts by mass. Is more preferably 20 to 45 parts by mass, and particularly preferably 25 to 40 parts by mass.
- the amount is less than 5 parts by mass, it may not be possible to impart an elastic modulus that can transfer the fine concavo-convex structure to the surface layer.
- the elasticity modulus of a surface layer cannot be made less than 200 Mpa, and it may become hard and cannot extrude dirt.
- the amount is 25 parts by mass or more, a sufficient elastic modulus is imparted to the surface layer, and the protrusions of the protrusions of the fine uneven structure can be further suppressed. Moreover, especially when it is 45 mass parts or less, the mobility reduction of a convex part is suppressed more, and high antifouling property is expressed.
- Polyethylene glycol diacrylate which is a bifunctional (meth) acrylate (average repeating unit of ethylene glycol is 6 to 40) includes Aronix M-260 (manufactured by Toagosei Co., Ltd., average repeating unit of ethylene glycol: 13), A -400 (average repeating unit of ethylene glycol: 9), A-600 (average repeating unit of ethylene glycol: 14), A-1000 (average repeating unit of ethylene glycol: 23) (above, trade name, Shin-Nakamura Chemical Co., Ltd.) Etc.). These may be used alone or in combination of two or more. When the polymer contains a polyethylene glycol diacrylate unit, the molecular mobility of the cured product contained in the surface layer can be increased and the dirt that has entered the recess can be pushed out.
- the average repeating unit of ethylene glycol present in the polyethylene glycol diacrylate is preferably 6 to 40, more preferably 9 to 30, further preferably 10 to 25, and more preferably 12 to 20. Is particularly preferred. When the average repeating unit of ethylene glycol is less than 6, the water contact angle of the surface layer cannot be made 25 ° or less, and sufficient antifouling properties may not be obtained. On the other hand, when the average repeating unit of ethylene glycol exceeds 40, the compatibility with a trifunctional or higher polyfunctional (meth) acrylate may be insufficient.
- the polyethylene glycol diacrylate contained in the polymerizable component is preferably 45 to 95 parts by mass, more preferably 50 to 85 parts by mass, when the total amount of the polymerizable components is 100 parts by mass.
- the amount is more preferably from ⁇ 80 parts by mass, particularly preferably from 55 to 75 parts by mass. If it is less than 45 parts by mass, the elastic modulus of the surface layer may not be less than 200 MPa. Moreover, when it exceeds 95 mass parts, the elasticity modulus of the grade which can transfer a fine concavo-convex structure to a surface layer may not be able to be hold
- the polymerizable component may further contain a monofunctional monomer.
- the monofunctional monomer is not particularly limited as long as it is compatible with the trifunctional or higher polyfunctional (meth) acrylate and the polyethylene glycol diacrylate.
- Examples of the monofunctional monomer include monofunctional (M-20G, M-90G, M-230G (trade name, manufactured by Shin-Nakamura Chemical Co., Ltd.)) having a polyethylene glycol chain in the ester group.
- Cations such as mono-functional (meth) acrylates having a hydroxyl group in the ester group such as meth) acrylates and hydroxyalkyl (meth) acrylates, monofunctional acrylamides, methacrylamidepropyltrimethylammonium methylsulfate, methacryloyloxyethyltrimethylammonium methylsulfate Hydrophilic monofunctional monomers such as hydrophilic monomers are preferred. These may use only 1 type and may use 2 or more types together.
- the monofunctional monomer contained in the polymerizable component is preferably 0 to 20 parts by mass, more preferably 5 to 15 parts by mass when the total amount of the polymerizable components is 100 parts by mass.
- a monofunctional monomer unit By introducing a monofunctional monomer unit into the polymer, the adhesion between the substrate and the surface layer is improved.
- the content of the monofunctional monomer By setting the content of the monofunctional monomer to 20 parts by mass or less, the content of the trifunctional or higher polyfunctional (meth) acrylate unit and the polyethylene glycol diacrylate unit in the polymer is not insufficient, Sufficient antifouling property is expressed.
- a polymer having a low polymerization degree obtained by (co) polymerizing one or more of the monofunctional monomers may be added to the active energy ray-curable resin composition.
- the polymer having a low polymerization degree can be blended in the active energy ray-curable resin composition, for example, 0 to 35 parts by mass.
- the polymer having a low degree of polymerization include a 40/60 copolymer oligomer (trade name: “MG” of monofunctional (meth) acrylates having a polyethylene glycol chain in an ester group and methacrylamidopropyltrimethylammonium methyl sulfate. Polymer ", manufactured by MRC Unitech Co., Ltd.) and the like.
- the active energy ray-curable resin composition may contain fine particles such as an antistatic agent, a release agent, an ultraviolet absorber, and colloidal silica in addition to the above-described various monomers and polymers having a low polymerization degree.
- the active energy ray-curable resin composition may contain a viscosity modifier such as acryloylmorpholine and vinylpyrrolidone, an adhesion improver such as acryloyl isocyanate that improves adhesion to the substrate, and the like.
- a release agent When a release agent is contained in the active energy ray-curable resin composition, good release properties can be maintained when the laminate according to this embodiment is continuously produced.
- the release agent when an anodized alumina mold is used, the release agent is easily adsorbed on the surface of the mold due to the interaction between the (poly) oxyalkylene alkyl phosphate compound and alumina.
- Examples of commercially available (poly) oxyalkylene alkyl phosphate compounds include “JP-506H” manufactured by Johoku Chemical Industry Co., Ltd., “Mold With INT-1856” manufactured by Accel Corporation, and “TDP manufactured by Nikko Chemicals Co., Ltd. -10, TDP-8, TDP-6, TDP-2, DDP-10, DDP-8, DDP-6, DDP-4, DDP-2 ”,“ TLP-4 ”,“ TCP-5 ”,“ DLP-10 ”(above, trade names), and the like.
- the release agent contained in the active energy ray-curable resin composition may be used alone or in combination of two or more.
- the ratio of the release agent contained in the active energy ray-curable resin composition is preferably 0.01 to 2.0 parts by mass, and 0.05 to 0.2 parts by mass with respect to 100 parts by mass of the polymerizable component. More preferred. If the ratio of a mold release agent is 0.01 mass part or more, the mold release property from the mold of the article
- active energy ray used for curing the active energy ray-curable resin composition include visible rays, ultraviolet rays, electron beams, plasma, infrared rays, and the like.
- the active energy ray-curable resin composition may be cured using a combination of photocuring and heat curing.
- the laminate according to the present embodiment includes a surface layer containing a cured product of the active energy ray-curable resin composition having a fine concavo-convex structure on the surface, and the elastic modulus of the surface layer is less than 200 MPa. Is made of a specific resin composition and therefore has excellent antifouling properties.
- the laminate according to the present embodiment is particularly suitable for an antireflection article because it has better antireflection properties. it can.
- the height of a convex part is 100 nm or more, it is excellent by antireflection property.
- the antireflection article, the video apparatus, and the touch panel according to the present embodiment include the laminate according to the present embodiment, the antireflection performance and the antifouling property are excellent.
- the laminate according to this embodiment is installed on the outermost surface of an antireflection article, a video device, and a touch panel, dirt such as sebum that adheres during use is less likely to be attached and easily removed, so that it exhibits good antireflection performance. Can do.
- FIG. 1 is a schematic cross-sectional view showing an example of the configuration of the laminate 10 according to the present embodiment.
- the surface layer 12 which consists of hardened
- a fine uneven structure is formed on the surface of the surface layer 12.
- the water contact angle of the surface layer of the portion where the fine concavo-convex structure is formed is 130 ° or more, and preferably 135 ° or more.
- the water contact angle of the surface layer is 130 ° or more, since the surface energy is sufficiently small, the dirt can be easily wiped off. Further, when the water contact angle of the surface layer is 135 ° or more, the surface energy is sufficiently small, so that the adhesion of dirt can be suppressed.
- the upper limit of the water contact angle of the surface layer is not particularly limited, but is preferably 150 ° or less, and more preferably 145 ° or less.
- the elastic modulus of the surface of the fine concavo-convex structure that is, the elastic modulus of the surface layer is less than 200 MPa, and preferably 50 to 100 MPa.
- the elastic modulus of the surface layer is less than 200 MPa, the fine concavo-convex structure is soft, so that dirt that has entered the recess can be pushed out.
- the fine concavo-convex structure is sufficiently hard when the elastic modulus of the surface layer is 50 MPa or more, it is possible to effectively prevent the protrusions from being united.
- the elastic modulus of the surface layer is 100 MPa or less, the fine concavo-convex structure is sufficiently soft, so that the fine concavo-convex structure can be freely deformed, and dirt that has entered the concave portions can be easily removed.
- the surface layer is composed of a cured product of the active energy ray curable resin composition.
- the active energy ray-curable resin composition comprises 1 to 55 parts by mass of a trifunctional or higher polyfunctional (meth) acrylate (A), 10 to 95 parts by mass of a bifunctional (meth) acrylate (B), silicone. It is preferable to contain 3 to 85 parts by mass of (meth) acrylate (C). Silicon (meth) acrylate (C) is excluded from trifunctional or higher polyfunctional (meth) acrylate (A) and bifunctional (meth) acrylate (B).
- the trifunctional or higher polyfunctional (meth) acrylate is a group selected from an acryloyl group (CH 2 ⁇ CHCO—) and a methacryloyl group (CH 2 ⁇ C (CH 3 ) CO—) in the molecule. It means a compound having two or more.
- the bifunctional (meth) acrylate means a compound having two groups selected from an acryloyl group (CH 2 ⁇ CHCO—) and a methacryloyl group (CH 2 ⁇ C (CH 3 ) CO—) in the molecule. To do.
- the polyfunctional (meth) acrylate (A) having 3 or more functions is preferably 4 or more and more preferably 5 or more.
- Examples of the trifunctional or higher polyfunctional (meth) acrylate (A) include ditrimethylolpropane tetra (meth) acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol ethoxytetra (meth) acrylate, dipentaerythritol hydroxypenta ( (Meth) acrylate, dipentaerythritol hexa (meth) acrylate, succinic acid / trimethylolethane / acrylic acid 1: 2: 4 condensation reaction product, urethane acrylate, polyether acrylate, modified epoxy acrylate, polyester Examples include acrylates.
- urethane acrylates examples include “EBECRYL220”, “EBECRYL1290”, “EBECRYL1290K”, “EBECRYL5129”, “EBECRYL8210”, “EBECRYL8301”, and “KRM8200” manufactured by Daicel Cytec.
- polyether acrylates examples include “EBECRYL81” manufactured by Daicel-Cytec.
- modified epoxy acrylates examples include “EBECRYL3416” manufactured by Daicel-Cytec.
- polyester acrylates examples include “EBECRYL450”, “EBECRYL657”, “EBECRYL800”, “EBECRYL810”, “EBECRYL812”, “EBECRYLEC”, “EBECRYL8830”, “EBECRYLEC”, and “EBECRYLEC”. ".
- examples of the trifunctional or more polyfunctional (meth) acrylate (A) include a monomer obtained by adding ethylene oxide or propylene oxide to the monomer. These polyfunctional (meth) acrylates (A) may be used alone or in combination of two or more.
- the trifunctional or higher polyfunctional (meth) acrylate (A) is preferably 1 to 55 parts by mass when the total of the polymerizable components in the active energy ray-curable resin composition is 100 parts by mass, More preferred is 30 parts by mass.
- an elastic modulus capable of transferring the fine uneven structure to the surface layer can be imparted.
- the increase in the elastic modulus of a surface layer can be suppressed by making content of polyfunctional (meth) acrylate (A) more than trifunctional into 55 mass parts or less.
- the laminate As a result, it becomes easy to extrude dirt from the recess, and sufficient antifouling property can be imparted to the laminate. Moreover, by setting it as 11 mass parts or more, a favorable elastic modulus can be provided to a surface layer and the protrusion unity of the convex part in a fine concavo-convex structure can be suppressed. Moreover, by setting it as 30 mass parts or less, the fall of the mobility of a convex part is suppressed and the antifouling property which can remove a stain
- bifunctional (meth) acrylate (B) examples include bifunctional acrylates having polyalkylene glycol such as bifunctional acrylates having polyethylene glycol, bifunctional acrylates having polypropylene glycol, and bifunctional acrylates having polybutylene glycol. preferable.
- bifunctional acrylates having polyethylene glycol include Aronix M-240, Aronix M-260 (manufactured by Toagosei Co., Ltd.), NK ester AT-20E, NK ester ATM-35E (manufactured by Shin-Nakamura Chemical Co., Ltd.), and the like. Can be mentioned.
- bifunctional acrylates having polypropylene glycol examples include APG-400 and APG-700 (manufactured by Shin-Nakamura Chemical Co., Ltd.).
- Specific examples of the bifunctional acrylate having polybutylene glycol include A-PTMG-650 (manufactured by Shin-Nakamura Chemical Co., Ltd.).
- polyethylene glycol diacrylate is preferably used from the viewpoint that better antifouling properties can be obtained.
- polyethylene glycol diacrylate as the bifunctional (meth) acrylate (B), the molecular mobility of the resin on the surface layer is improved, the dirt entering the recesses is more easily pushed out, and good antifouling properties are expressed.
- the total of the average repeating units of polyethylene glycol chains present in one molecule of polyethylene glycol diacrylate is preferably 6 to 40, more preferably 9 to 30, and still more preferably 12 to 20. If the average repeating unit of the polyethylene glycol chain is 6 or more, the mobility of the molecule is maintained and good antifouling properties are exhibited. If the average repeating unit of the polyethylene glycol chain is 40 or less, the compatibility with the trifunctional or higher polyfunctional (meth) acrylate (A) is good.
- bifunctional acrylates having polyalkylene glycol polypropylene glycol diacrylate and polybutylene glycol diacrylate are also preferably used from the viewpoint of compatibility.
- silicone (meth) acrylate (C) such as silicone di (meth) acrylate having low hydrophilicity by using polypropylene glycol diacrylate or polybutylene glycol diacrylate as the bifunctional (meth) acrylate (B) Is improved, and a transparent active energy ray-curable resin composition can be obtained.
- These bifunctional (meth) acrylates (B) may be used alone or in combination of two or more.
- the bifunctional (meth) acrylate (B) is preferably 10 to 95 parts by mass, preferably 20 to 70 parts by mass, when the total amount of polymerizable components in the active energy ray-curable resin composition is 100 parts by mass. More preferably, it is a part.
- the bifunctional (meth) acrylate (B) is preferably 10 to 95 parts by mass, preferably 20 to 70 parts by mass, when the total amount of polymerizable components in the active energy ray-curable resin composition is 100 parts by mass. More preferably, it is a part.
- a mobility can be provided to a convex part and antifouling property is expressed effectively.
- the fall of an elasticity modulus is suppressed and the protrusion unity of a convex part can be suppressed.
- the silicone (meth) acrylate (C) is selected from an acryloyl group (CH 2 ⁇ CHCO—) and a methacryloyl group (CH 2 ⁇ C (CH 3 ) CO—) at the side chain and / or terminal of the compound having an organosiloxane structure.
- the compound is not particularly limited as long as it has at least one group.
- the silicone (meth) acrylate (C) is preferably selected from the viewpoint of the compatibility between the trifunctional or higher polyfunctional (meth) acrylate (A) and the bifunctional (meth) acrylate (C).
- compatible segment examples include a polyalkylene oxide structure, a polyester structure, and a polyamide structure. These compatible segments may be contained alone in the silicone (meth) acrylate (C), or two or more of them may be contained. Silicone (meth) acrylate (C) may be used after being diluted from the aspect of handling. As the diluent, those having reactivity in terms of bleeding out from a cured product are preferable. Handling of silicone (meth) acrylate (C) by mixing trifunctional or higher polyfunctional (meth) acrylate (A) or bifunctional (meth) acrylate (B) with silicone (meth) acrylate (C) Can also be improved.
- silicone (meth) acrylate (C) examples include the Silaplane series manufactured by Chisso Corporation, and the silicone diacrylates “X-22-164” and “X-22” manufactured by Shin-Etsu Chemical Co., Ltd. Preferred examples include “1602”, “BYK-3500” and “BYK-3570” manufactured by Big Chemie Japan, and the TEGO Rad series manufactured by Evonik Degussa Japan. These silicone (meth) acrylates (C) may be used alone or in combination of two or more.
- the silicone (meth) acrylate (C) is preferably 3 to 85 parts by mass, preferably 5 to 70 parts by mass, when the total amount of the polymerizable components in the active energy ray-curable resin composition is 100 parts by mass. More preferably, it is more preferably 45 to 70 parts by mass, and particularly preferably 45 to 65 parts by mass.
- the elasticity modulus of the grade which can transfer a fine uneven structure to a surface layer can be provided by content of silicone (meth) acrylate (C) being 85 mass parts or less. Moreover, by setting it as 5 mass parts or more, the water contact angle of a surface layer becomes easy to become 135 degrees or more, and the antifouling property of a laminated body improves. Moreover, by setting it as 70 mass parts or less, the viscosity of an active energy ray curable resin composition is suppressed, and handling improves.
- the compatibility with the component in an active energy ray curable resin composition, especially (A) and (B) becomes favorable, and the water repellency of a surface layer and the softness
- the outstanding antifouling property is expressed.
- the fall of the elasticity modulus of a surface layer can be suppressed and the protrusion unity of the convex part of a fine concavo-convex structure can be suppressed.
- the active energy ray-curable resin composition may contain a monofunctional monomer.
- the monofunctional monomer is preferably selected in consideration of the compatibility with the trifunctional or higher polyfunctional (meth) acrylate (A) and the bifunctional (meth) acrylate (B).
- monofunctional (meth) acrylates having a polyethylene glycol chain in the ester group monofunctional (meth) acrylates having a hydroxyl group in the ester group such as hydroxyalkyl (meth) acrylate, monofunctional acrylamides, methacrylamide propyl
- hydrophilic monofunctional monomers such as cationic monomers such as trimethylammonium methyl sulfate or methacryloyloxyethyl trimethylammonium methyl sulfate.
- monofunctional monomer specifically, monofunctional (meth) acrylates “M-20G”, “M-90G”, “M-230G” (manufactured by Shin-Nakamura Chemical Co., Ltd.), etc. may be used. it can.
- the active energy ray-curable resin composition may be added with viscosity modifiers such as acryloylmorpholine and vinylpyrrolidone, and adhesion improvers such as acryloyl isocyanates that improve adhesion to transparent substrates. it can.
- viscosity modifiers such as acryloylmorpholine and vinylpyrrolidone
- adhesion improvers such as acryloyl isocyanates that improve adhesion to transparent substrates. it can.
- the content of the monofunctional monomer in the active energy ray-curable resin composition is, for example, 0.1 to 20 when the total of the polymerizable components in the active energy ray-curable resin composition is 100 parts by mass.
- the amount is preferably part by mass, and more preferably 5 to 15 parts by mass.
- a polymer (oligomer) having a low degree of polymerization obtained by polymerizing one or more monofunctional monomers may be added to the active energy ray-curable resin composition.
- a polymer having a low degree of polymerization include monofunctional (meth) acrylates having a polyethylene glycol chain in an ester group (for example, “M-230G”, manufactured by Shin-Nakamura Chemical Co., Ltd.) And 40/60 copolymer oligomers of methacrylamidopropyltrimethylammonium methyl sulfate (for example, “MG polymer” manufactured by MRC Unitech).
- the active energy ray-curable composition contains fine particles such as an antistatic agent, a release agent, an ultraviolet absorber, and colloidal silica in addition to the above-described various monomers and polymers having a low polymerization degree. May be.
- the active energy ray-curable resin composition may contain a release agent.
- a release agent When a release agent is contained in the active energy ray-curable resin composition, good release properties can be maintained when the laminate is continuously produced.
- the mold release agent include (poly) oxyalkylene alkyl phosphate compounds. In particular, when an anodized alumina mold is used, the release agent is easily adsorbed on the surface of the mold due to the interaction between the (poly) oxyalkylene alkyl phosphate compound and alumina.
- Examples of commercially available (poly) oxyalkylene alkyl phosphate compounds include “JP-506H” (trade name) manufactured by Johoku Chemical Industry Co., Ltd., “Mold With INT-1856” (trade name) manufactured by Accel Corporation, “TDP-10”, “TDP-8”, “TDP-6”, “TDP-2”, “DDP-10”, “DDP-8”, “DDP-6”, “DDP” manufactured by Nikko Chemicals Co., Ltd. -4 ",” DDP-2 “,” TLP-4 “,” TCP-5 ",” DLP-10 “(trade name), and the like.
- the release agent contained in the active energy ray-curable resin composition may be used alone or in combination of two or more.
- the content of the release agent contained in the active energy ray-curable resin composition is preferably 0.01 to 2.0 parts by mass, and 0.05 to 0. 0 parts by mass with respect to 100 parts by mass of the polymerizable component. More preferably, it is 2 parts by mass. If content of a mold release agent is 0.01 mass part or more, the mold release property from the mold of the articles
- the active energy ray-curable resin composition in the present embodiment can appropriately contain a monomer having a radical polymerizable and / or cationic polymerizable bond in the molecule, a polymer having a low polymerization degree, and a reactive polymer. It is cured by a polymerization initiator described later. Moreover, the active energy ray-curable resin composition may include a non-reactive polymer.
- the laminate of this embodiment is a laminate having a surface layer with excellent antifouling properties that can easily remove dirt
- the laminate of this embodiment is used as the outermost surface of an antireflection article, an image display device, a touch panel, etc. If it is installed, it is difficult to get dirt such as sebum adhering at the time of use, and it can be easily removed, and good antireflection performance can be exhibited. Furthermore, since dirt can be easily removed without using water or alcohol on the surface, an article excellent in practical use can be obtained.
- FIG. 1 is a schematic cross-sectional view showing an example of the configuration of the laminate 10 according to the present embodiment.
- a surface layer 12 made of a cured product of an active energy ray-curable resin composition is formed on the surface of a substrate 11 having transparency, and a surface treatment layer 13 is provided on the surface of the surface layer 12.
- the elastic modulus of the surface of the laminate that is, the elastic modulus of the fine concavo-convex structure layer including the surface treatment layer and the surface layer is 2000 MPa or less, preferably 200 MPa or less, preferably 50 to 100 MPa. It is more preferable that When the elastic modulus of the fine concavo-convex structure layer is 2000 MPa or less, the fine concavo-convex structure is soft, so that the dirt that has entered the dent can be moved with a small external force. When the elastic modulus of the fine concavo-convex structure layer is 200 MPa or less, since the fine concavo-convex structure is further soft, the dirt that has entered the dents can be pushed out with very little external force.
- the elastic modulus of the fine concavo-convex structure layer is 50 MPa or more, coalescence of the convex portions of the fine concavo-convex structure can be effectively prevented.
- the elastic modulus of the surface layer is 100 MPa or less, the fine concavo-convex structure is sufficiently soft, so that the fine concavo-convex structure can be freely deformed with very little external force, and the dirt that has entered the recess can be easily removed.
- the unity of protrusions or protrusions means that adjacent protrusions or protrusions are combined to form one.
- the surface layer is composed of a cured product of the active energy ray curable resin composition.
- the active energy ray-curable resin composition contains 25 to 70 parts by mass of a trifunctional or higher polyfunctional (meth) acrylate (A) and 30 to 75 parts by mass of a bifunctional (meth) acrylate (B) ( However, the total of the polymerizable components is 100 parts by mass.)
- the trifunctional or higher polyfunctional (meth) acrylate is a group selected from an acryloyl group (CH 2 ⁇ CHCO—) and a methacryloyl group (CH 2 ⁇ C (CH 3 ) CO—) in the molecule. It means a compound having two or more.
- the bifunctional (meth) acrylate means a compound having two groups selected from an acryloyl group (CH 2 ⁇ CHCO—) and a methacryloyl group (CH 2 ⁇ C (CH 3) CO—) in the molecule.
- the polyfunctional (meth) acrylate (A) having 3 or more functions is preferably 4 or more and more preferably 5 or more.
- Examples of the trifunctional or higher polyfunctional (meth) acrylate (A) include ditrimethylolpropane tetra (meth) acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol ethoxytetra (meth) acrylate, dipentaerythritol hydroxypenta ( (Meth) acrylate, dipentaerythritol hexa (meth) acrylate, succinic acid / trimethylolethane / (meth) acrylic acid, 1: 2: 4 condensation reaction product, urethane (meth) acrylates, polyether (meth) Examples include acrylates, modified epoxy (meth) acrylates, polyester (meth) acrylates, and silicone (meth) acrylates.
- Examples of urethane (meth) acrylates include “EBECRYL220”, “EBECRYL1290”, “EBECRYL1290K”, “EBECRYL5129”, “EBECRYL8210”, “EBECRYL8301”, and “KRM8200” manufactured by Daicel-Cytec.
- Examples of the polyether (meth) acrylates include “EBECRYL81” manufactured by Daicel-Cytec.
- Examples of the modified epoxy (meth) acrylates include “EBECRYL3416” manufactured by Daicel-Cytec.
- polyester (meth) acrylates examples include “EBECRYL450”, “EBECRYL657”, “EBECRYL800”, “EBECRYL8101”, “EBECRYL812”, “EBECRYL812”, “EBECRYL1830”, “EBECRYL1830”, “EB45R”, and “EBECRYL1830”. , “EBECRYL1870”.
- Preferred examples of silicone (meth) acrylates include “BYK-3570” manufactured by Big Chemie Japan, and TEGO Rad series manufactured by Evonik Degussa Japan.
- examples of the trifunctional or more polyfunctional (meth) acrylate (A) examples include a monomer obtained by adding ethylene oxide or propylene oxide to the monomer. These polyfunctional (meth) acrylates (A) may be used alone or in combination of two or more.
- the trifunctional or higher polyfunctional (meth) acrylate (A) is 25 to 70 parts by mass when the total amount of polymerizable components in the active energy ray-curable resin composition is 100 parts by mass.
- the content of the trifunctional or higher polyfunctional (meth) acrylate (A) is 25 parts by mass or more, it is possible to impart an elastic modulus to the extent that the fine uneven structure can be transferred to the surface layer.
- the increase in the elastic modulus of a surface layer can be suppressed by making content of polyfunctional (meth) acrylate (A) more than trifunctional into 70 mass parts or less. As a result, it becomes easy to extrude dirt from the recess, and sufficient antifouling property can be imparted to the laminate.
- bifunctional (meth) acrylate (B) examples include bifunctional acrylates having polyalkylene glycol such as bifunctional acrylates having polyethylene glycol, bifunctional acrylates having polypropylene glycol, and bifunctional acrylates having polybutylene glycol. preferable.
- bifunctional acrylates having polyethylene glycol include Aronix M-240, Aronix M260 (Toagosei Co., Ltd.), NK Ester AT-20E, NK Ester ATM-35E (Shin Nakamura Chemical Co., Ltd.) .
- Specific examples of the bifunctional acrylates having polypropylene glycol include APG-400, APG700 (manufactured by Shin-Nakamura Chemical Co., Ltd.) and the like.
- bifunctional acrylate having polybutylene glycol examples include A-PTMG-650 (manufactured by Shin-Nakamura Chemical Co., Ltd.).
- a bifunctional acrylate having a polyalkylene glycol as the bifunctional (meth) acrylate (B)
- the elastic modulus of the surface layer is suppressed, and it becomes easy to push out dirt from the recesses, effectively exhibiting antifouling properties.
- polyethylene glycol diacrylate is preferably used from the viewpoint that better antifouling properties can be obtained.
- polyethylene glycol diacrylate as the bifunctional (meth) acrylate (B)
- the molecular mobility of the resin on the surface layer is improved, the dirt entering the recesses is more easily pushed out, and good antifouling properties are expressed.
- the total of the average repeating units of polyethylene glycol chains present in one molecule of polyethylene glycol diacrylate is preferably 6 to 40, more preferably 9 to 30, and still more preferably 12 to 20. If the average repeating unit of the polyethylene glycol chain is 6 or more, the mobility of the molecule is maintained and good antifouling properties are exhibited. If the average repeating unit of the polyethylene glycol chain is 40 or less, the compatibility with the trifunctional or higher polyfunctional (meth) acrylate (A) is good.
- bifunctional acrylates having polyalkylene glycol polypropylene glycol diacrylate and polybutylene glycol diacrylate are also preferably used from the viewpoint of compatibility.
- bifunctional (meth) acrylate (B) By using polypropylene glycol diacrylate or polybutylene glycol diacrylate as the bifunctional (meth) acrylate (B), compatibility with silicone (meth) acrylates such as silicone di (meth) acrylate having low hydrophilicity described later can be achieved. And a transparent active energy ray-curable resin composition can be obtained.
- These bifunctional (meth) acrylates (B) may be used alone or in combination of two or more.
- silicone (meth) acrylate is preferably used from the viewpoint of low surface free energy and an effect of improving antifouling properties.
- Specific examples of silicone (meth) acrylates include, for example, Silaplane series manufactured by Chisso Corporation, silicone diacrylates “X-22-164” and “X-22-1602” manufactured by Shin-Etsu Chemical Co., Ltd.
- Preferred examples include “BYK-3500” manufactured by Japan, and TEGO Rad series manufactured by Evonik Degussa Japan.
- These bifunctional (meth) acrylates (B) may be used alone or in combination of two or more.
- the bifunctional (meth) acrylate (B) is 30 to 75 parts by mass when the total amount of polymerizable components in the active energy ray-curable resin composition is 100 parts by mass.
- the content of the bifunctional (meth) acrylate (B) is set to 30 parts by mass or more, an increase in the elastic modulus of the surface layer is suppressed, and it becomes easy to extrude dirt from the recess, and sufficient antifouling properties are exhibited. .
- content of bifunctional (meth) acrylate (B) into 75 mass parts or less the fall of an elasticity modulus is suppressed and coalescence of a convex part can be suppressed.
- the active energy ray-curable resin composition may contain a monofunctional monomer.
- the monofunctional monomer is preferably selected in consideration of the compatibility with the trifunctional or higher polyfunctional (meth) acrylate (A) and the bifunctional (meth) acrylate (B).
- monofunctional (meth) acrylates having a polyethylene glycol chain in the ester group monofunctional (meth) acrylates having a hydroxyl group in the ester group such as hydroxyalkyl (meth) acrylate, monofunctional acrylamides, methacrylamide propyl
- hydrophilic monofunctional monomers such as cationic monomers such as trimethylammonium methyl sulfate or methacryloyloxyethyl trimethylammonium methyl sulfate.
- monofunctional monomer specifically, “M-20G”, “M-90G”, “M-230G” (manufactured by Shin-Nakamura Chemical Co., Ltd.) and the like can be used.
- alkyl mono (meth) acrylate, silicone (meth) acrylate, and fluorinated alkyl (meth) acrylate are preferably used.
- monofunctional monomers specifically, “Blemmer LA”, “Blemmer CA”, “Blemmer SA” manufactured by NOF Corporation, “X-24-8201” manufactured by Shin-Etsu Chemical Co., Ltd., “X-22-174DX”, “C10GACRY” manufactured by Exfloor Research, etc. can be used.
- the active energy ray-curable resin composition may be added with viscosity modifiers such as acryloylmorpholine and vinylpyrrolidone, and adhesion improvers such as acryloyl isocyanates that improve adhesion to transparent substrates. it can.
- viscosity modifiers such as acryloylmorpholine and vinylpyrrolidone
- adhesion improvers such as acryloyl isocyanates that improve adhesion to transparent substrates. it can.
- the content of the monofunctional monomer in the active energy ray-curable resin composition is, for example, 0.1 to 20 when the total of the polymerizable components in the active energy ray-curable resin composition is 100 parts by mass.
- the amount is preferably part by mass, and more preferably 5 to 15 parts by mass.
- a polymer (oligomer) having a low degree of polymerization obtained by polymerizing one or more monofunctional monomers may be added to the active energy ray-curable resin composition.
- a polymer having a low degree of polymerization include monofunctional (meth) acrylates having a polyethylene glycol chain in an ester group (for example, “M-230G”, manufactured by Shin-Nakamura Chemical Co., Ltd.) And 40/60 copolymer oligomers of methacrylamidopropyltrimethylammonium methyl sulfate (for example, “MG polymer” manufactured by MRC Unitech).
- the active energy ray-curable composition contains fine particles such as an antistatic agent, a release agent, an ultraviolet absorber, and colloidal silica in addition to the above-described various monomers and polymers having a low polymerization degree. May be.
- the active energy ray-curable resin composition may contain a release agent.
- a release agent When a release agent is contained in the active energy ray-curable resin composition, good release properties can be maintained when the laminate is continuously produced.
- the mold release agent include (poly) oxyalkylene alkyl phosphate compounds. In particular, when an anodized alumina mold is used, the release agent is easily adsorbed on the surface of the mold due to the interaction between the (poly) oxyalkylene alkyl phosphate compound and alumina.
- the release agent contained in the active energy ray-curable resin composition may be used alone or in combination of two or more.
- the content of the release agent contained in the active energy ray-curable resin composition is preferably 0.01 to 2.0 parts by mass, and 0.05 to 0. 0 parts by mass with respect to 100 parts by mass of the polymerizable component. More preferably, it is 2 parts by mass. If content of a mold release agent is 0.01 mass part or more, the mold release property from the mold of the articles
- the water contact angle of the surface treatment layer is preferably 120 ° or more, and more preferably 130 ° or more.
- the surface energy is sufficiently small so that the dirt can be easily wiped off.
- the water contact angle of the surface treatment layer is 130 ° or more, the surface energy is sufficiently small, so that adhesion of dirt can be suppressed.
- the upper limit of the water contact angle of the surface treatment layer is not particularly limited, but is preferably 150 ° or less, and more preferably 145 ° or less.
- a compound having an alkyl group, a polydimethylsiloxane structure or a fluorinated alkyl group is preferably used, and silane, alkoxysilane, silazane from the viewpoint of adhesion to a fine uneven structure. It is preferable to have a reactive group such as (meth) acrylate. Specific examples of such compounds include “KBM” series, “KBE” series, “X” series manufactured by Shin-Etsu Chemical Co., Ltd., “BYK” series manufactured by Big Chemie Japan, and “ Preferable examples include TEGO Rad series, “FG” series, “FS” series manufactured by Fluoro Technology.
- the surface treatment layer can be applied by a general method such as dipping, spraying, brushing or spin coating.
- a general method such as dipping, spraying, brushing or spin coating.
- the pretreatment include silica vapor deposition, introduction of functional groups on the surface by plasma, coating of a primer containing a compound having good reactivity with the surface treatment layer, and the like.
- the thickness of the surface treatment layer is preferably 100 nm or less from the viewpoint of maintaining the antireflection performance of the fine uneven shape.
- the presence of the surface treatment layer can be confirmed by a variable angle ATR measurement, the spectrum changing with the incident angle, or the cross-sectional observation by TEM.
- the active energy ray-curable resin composition in the present embodiment can appropriately contain a monomer having a radical polymerizable and / or cationic polymerizable bond in the molecule, a polymer having a low polymerization degree, and a reactive polymer. It is cured by a polymerization initiator described later. Moreover, the active energy ray-curable resin composition may include a non-reactive polymer.
- the laminate of this embodiment is a laminate having a surface layer with excellent antifouling properties that can easily remove dirt
- the laminate of this embodiment is used as the outermost surface of an antireflection article, an image display device, a touch panel, etc. If it is installed, it is difficult to get dirt such as sebum adhering at the time of use, and it can be easily removed, and good antireflection performance can be exhibited. Furthermore, since dirt can be easily removed without using water or alcohol on the surface, an article excellent in practical use can be obtained.
- FIG. 1 is a schematic cross-sectional view showing an example of the configuration of the laminate 10 according to the present embodiment.
- the surface layer 12 which consists of hardened
- a fine uneven structure is formed on the surface of the surface layer 12.
- the surface layer is a cured product of an active energy ray curable composition
- the active energy ray curable composition contains a compound (D) having an SH group.
- the SH group is a thiol group, a hydroxyl group, a mercapto group, or a sulfhydryl group.
- the elastic modulus can be lowered while maintaining the crosslinking density of the cured product, so that the flexibility can be imparted to the protrusions while maintaining the shape of the protrusions, and dirt accumulated in the recesses can be removed. Will improve.
- the surface layer is a cured product of the active energy ray-curable line composition
- the active energy ray-curable fat composition contains 0 or more polyfunctional (meth) acrylate (A) of 0 or more. -95 parts by mass, preferably 0-75 parts by mass of silicone (meth) acrylate (C), and 1-60 parts by mass of SH group-containing compound (D) (however, the total of the polymerizable components is 100 parts by mass) And).
- Silicone (meth) acrylate (C) is excluded from bifunctional or higher polyfunctional (meth) acrylate (A).
- the polyfunctional (meth) acrylate (A) having two or more functions means a group selected from an acryloyl group (CH 2 ⁇ CHCO—) and a methacryloyl group (CH 2 ⁇ C (CH 3 ) CO—) in the molecule.
- polyfunctional (meth) acrylate (A) having two or more functions ethylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, isocyanuric acid ethylene oxide-modified di (meth) acrylate, triethylene glycol di ( (Meth) acrylate, diethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, 1,5-pentanediol di (meth) acrylate, 1,3-butylene glycol Di (meth) acrylate, polybutylene glycol di (meth) acrylate, 2,2-bis (4- (meth) acryloxypolyethoxyphenyl) propane, 2,2-bis (4- (meth) acryloxyethoxyphenyl) Professional 2,2-bis (4- (3- (meth) acryloxy-2-hydroxypropoxy) phenyl) propane,
- the bifunctional or higher polyfunctional (meth) acrylate (A) is preferably 0 to 95 parts by mass, when the total of the polymerizable components in the active energy ray-curable composition is 100 parts by mass, The amount is more preferably 90 parts by weight, and particularly preferably 40 to 90 parts by weight. If content of bifunctional or more polyfunctional (meth) acrylate (A) is 0 mass part or more and 95 mass parts or less, the excessive fall of an elasticity modulus can be suppressed and the shape of arium
- a bifunctional or higher polyfunctional (meth) acrylate (A) to the composition, that is, if its content exceeds 0 part by mass, it becomes easy to suppress the elastic modulus, and the shape of the protrusion Easy to maintain.
- content of bifunctional or more polyfunctional (meth) acrylate (A) is 40 mass parts or more, the fall of an elasticity modulus can be suppressed and coalescence of a proceedings
- content of bifunctional or more polyfunctional (meth) acrylate (A) is 95 mass parts or less, an elasticity modulus falls and a stain
- the silicone (meth) acrylate (C) is selected from an acryloyl group (CH 2 ⁇ CHCO—) and a methacryloyl group (CH 2 ⁇ C (CH 3 ) CO—) at the side chain and / or terminal of the compound having an organosiloxane structure.
- the silicone (meth) acrylate (C) is preferably selected from the viewpoint of compatibility with a bifunctional or higher polyfunctional (meth) acrylate (A).
- A It is preferable to use a compound having a compatible segment that contributes to compatibility. Examples of the compatible segment include a polyalkylene oxide structure, a polyester structure, and a polyamide structure.
- Silicone (meth) acrylate (C) may be used after being diluted from the aspect of handling. As the diluent, those having reactivity in terms of bleeding out from a cured product are preferable. Moreover, handling of a silicone (meth) acrylate (C) can also be improved by mixing polyfunctional (meth) acrylate (A) more than bifunctional with silicone (meth) acrylate (C).
- silicone (meth) acrylate (C) specifically, for example, Silaplane series (trade name) manufactured by Chisso Corporation, silicone diacrylate “X-22-164” manufactured by Shin-Etsu Chemical Co., Ltd., “X-22-1602” (all trade names), “BYK-3500” and “BYK-3570” (all trade names) manufactured by Big Chemie Japan, TEGO Rad series (trade names) manufactured by Evonik Degussa Japan Are preferable.
- These silicone (meth) acrylates (C) may be used alone or in combination of two or more.
- the silicone (meth) acrylate (C) is preferably 0 to 75 parts by mass, preferably 5 to 70 parts by mass, when the total amount of the polymerizable components in the active energy ray-curable composition is 100 parts by mass. It is more preferable.
- the content of the silicone (meth) acrylate (C) is 0 part by mass or more and 75 parts by mass or less, water repellency is imparted and the antifouling property is further improved.
- the silicone (meth) acrylate (C) is added to the composition, that is, if its content exceeds 0 parts by mass, water repellency is more effectively imparted and antifouling properties are improved.
- silicone (meth) acrylate (C) when content of silicone (meth) acrylate (C) is 5 mass parts or more, since the surface energy of a surface layer falls and the contact angle with respect to water will be 130 degrees or more, antifouling property improves further. Moreover, when content of silicone (meth) acrylate (C) is 75 mass parts or less, since compatibility with another component becomes good, transparency improves. Moreover, when content of a silicone (meth) acrylate (C) is 70 mass parts or less, the viscosity of an active energy ray curable composition is suppressed and handling improves.
- the compound (D) containing an SH group is not particularly limited as long as it is a compound containing an SH group, but is a compound containing two or more SH groups in order to increase the crosslinking density of the surface layer and maintain the strength. It is preferable that the SH group is a secondary thiol from the viewpoint of storage stability of the active energy ray-curable composition.
- Examples of the compound having two or more SH groups include 1,2-ethanedithiol, 1,2-propanedithiol, 1,3-propanedithiol, 1,4-butanedithiol, 1,6-hexanedithiol, 1,7- Heptanedithiol, 1,8-octanedithiol, 1,9-nonanedithiol, 1,10-decanedithiol, 1,12-dodecanedithiol, 2,2-dimethyl-1,3-propanedithiol, 3-methyl-1, 5-pentanedithiol, 2-methyl-1,8-octanedithiol, 1,4-cyclohexanedithiol, 1,4-bis (mercaptomethyl) cyclohexane, 1,1-cyclohexanedithiol, 1,2-cyclohexanedithiol, bicyclo [ 2,2,1] hepta-exo-cis-2,3-
- Examples of the compound having secondary thiol include Karenz MT PE1, Karenz MT NR1, Karenz MT BD1 (trade name, manufactured by Showa Denko KK).
- the SH group-containing compound (D) is preferably 1 to 60 parts by mass, preferably 1 to 15 parts by mass, when the total amount of polymerizable components in the active energy ray-curable composition is 100 parts by mass. More preferably. If the content of the SH group-containing compound (D) is 1 part by mass or more, the elastic modulus of the surface layer can be lowered while maintaining the cross-linking density, so that it becomes easy to extrude dirt from the recess, resulting in lamination Sufficient antifouling property can be imparted to the body, and the restoring force of the shape of the convex portion can be maintained.
- content of the compound (D) containing SH group is 60 mass parts or less, the storage stability of an active energy ray-curable composition can be maintained. Moreover, when content of the compound (D) containing SH group is 15 mass parts or less, the fall of the elasticity modulus of a surface layer can be suppressed more effectively, and coalescence of a convex part can be prevented.
- the active energy ray-curable composition may contain a monofunctional monomer.
- the monofunctional monomer is preferably selected in consideration of the compatibility with the bifunctional or higher polyfunctional (meth) acrylate (A) and the silicone (meth) acrylate (C).
- monofunctional monomers include monofunctional (meth) acrylates having a polyethylene glycol chain in the ester group, monofunctional (meth) acrylates having a hydroxyl group in the ester group such as hydroxyalkyl (meth) acrylate, and monofunctional Preferred examples include hydrophilic monofunctional monomers such as cationic monomers such as acrylamides, methacrylamidopropyltrimethylammonium methyl sulfate or methacryloyloxyethyltrimethylammonium methyl sulfate.
- monofunctional monomers include monofunctional (meth) acrylates “M-20G”, “M-90G”, and “M-230G” (manufactured by Shin-Nakamura Chemical Co., Ltd., all trade names). Etc. can be used. From the viewpoint of improving antifouling properties, alkyl mono (meth) acrylate, silicone (meth) acrylate, and fluorinated alkyl (meth) acrylate are preferably used.
- monofunctional monomer include “Blemmer LA”, “Blemmer CA”, “Blemmer SA” (all trade names) manufactured by NOF Corporation, and “X” manufactured by Shin-Etsu Chemical Co., Ltd. -24-2401 ",” X-22-174DX "(both trade names),” C10GACRY "(trade name) manufactured by Ex Floor Research, etc. can be used.
- the active energy ray-curable composition may also contain viscosity modifiers such as acryloylmorpholine and vinylpyrrolidone, and adhesion improvers such as acryloyl isocyanates that improve adhesion to transparent substrates. .
- the content when the total amount of the polymerizable components in the active energy ray-curable composition is 100 parts by mass, for example, the content is preferably 0.1 to 20 parts by mass. More preferably, it is 15 parts by mass.
- the adhesion between the substrate and the surface layer active energy ray-curable composition
- the content of the monofunctional monomer is 20 parts by mass or less, a bifunctional or higher polyfunctional (meth) acrylate (A), a silicone (meth) acrylate (C), and a compound containing an SH group (D)
- the antifouling property can be sufficiently expressed by adjusting the content of.
- Monofunctional monomers may be used alone or in combination of two or more.
- a polymer (oligomer) having a low polymerization degree obtained by polymerizing one or more monofunctional monomers may be added to the active energy ray-curable composition.
- a polymer having a low degree of polymerization include monofunctional (meth) acrylates having a polyethylene glycol chain in an ester group (for example, “M-230G” (trade name), Shin-Nakamura Chemical Co., Ltd. And 40/60 copolymerized oligomers of methacrylamidopropyltrimethylammonium methyl sulfate (for example, “MG polymer” (trade name) manufactured by MRC Unitech Co., Ltd.).
- the active energy ray-curable composition contains fine particles such as an antistatic agent, a release agent, an ultraviolet absorber, and colloidal silica in addition to the above-described various monomers and polymers having a low polymerization degree. May be.
- the active energy ray-curable composition may contain a release agent.
- a release agent When a release agent is contained in the active energy ray curable composition, good release properties can be maintained when the laminate is continuously produced.
- the mold release agent include (poly) oxyalkylene alkyl phosphate compounds.
- the release agent is easily adsorbed on the surface of the mold due to the interaction between the (poly) oxyalkylene alkyl phosphate compound and alumina.
- Examples of commercially available (poly) oxyalkylene alkyl phosphate compounds include “JP-506H” (trade name) manufactured by Johoku Chemical Industry Co., Ltd., “Mold With INT-1856” (trade name) manufactured by Accel Corporation, “TDP-10”, “TDP-8”, “TDP-6”, “TDP-2”, “DDP-10”, “DDP-8”, “DDP-6”, “DDP” manufactured by Nikko Chemicals Co., Ltd. -4 ",” DDP-2 “,” TLP-4 “,” TCP-5 ",” DLP-10 "(all trade names).
- the release agent contained in the active energy ray-curable composition may be used alone or in combination of two or more.
- the content of the release agent contained in the active energy ray-curable composition is preferably 0.01 to 2.0 parts by mass, and 0.05 to 0.2 parts per 100 parts by mass of the polymerizable component. More preferably, it is part by mass. If content of a mold release agent is 0.01 mass part or more, the mold release property from the mold of the articles
- the elastic modulus of the surface of the fine concavo-convex structure is preferably 500 MPa or less, and more preferably 50 to 100 MPa. If the elastic modulus of the surface layer is 50 MPa or more, the fine concavo-convex structure is sufficiently hard, so that it is possible to effectively prevent the protrusions from projecting together. When the elastic modulus of the surface layer is 500 MPa or less, the fine concavo-convex structure is soft, so that the dirt that has entered the recess can be pushed out. When the elastic modulus of the surface layer is 100 MPa or less, the fine concavo-convex structure is sufficiently soft, so that the fine concavo-convex structure can be freely deformed, and dirt that has entered the concave portions can be easily removed.
- the water contact angle of the surface layer where the fine concavo-convex structure is formed is not particularly limited, but is preferably 130 ° or more.
- the upper limit of the water contact angle of the surface layer is not particularly limited, but is preferably 150 ° or less, and more preferably 145 ° or less.
- the active energy ray-curable composition of the present embodiment can appropriately contain a monomer having a radical polymerizable and / or cationic polymerizable bond in the molecule, a polymer having a low polymerization degree, and a reactive polymer.
- the active energy ray-curable composition can be cured by a polymerization initiator described later.
- the active energy ray-curable composition may contain a non-reactive polymer.
- the laminate of this embodiment is a laminate having a surface layer with excellent antifouling properties that can easily remove dirt
- the laminate of this embodiment is used as the outermost surface of an antireflection article, an image display device, a touch panel, etc. If it is installed, it is difficult to get dirt such as sebum adhering at the time of use, and it can be easily removed, and good antireflection performance can be exhibited. Furthermore, since dirt can be easily removed without using water or alcohol on the surface, an article excellent in practical use can be obtained.
- Example A Hereinafter, the present embodiment will be specifically described with reference to Example A, but the present invention is not limited thereto.
- the surface of the surface layer was applied using “FISCHERSCOPE® HM2000” (trade name, manufactured by Fischer) while increasing the load under the condition of 50 mN / 10 seconds, held at 50 mN for 60 seconds, and then 50 mN / Unloading while reducing the load for 10 seconds.
- the elastic modulus was calculated by extrapolation using points at which 65% and 95% loads were applied.
- a Teflon sheet having a thickness of 500 ⁇ m is used as a spacer, the active energy ray-curable resin composition is sandwiched between two glass plates, and the active energy ray-curing property is irradiated by irradiating ultraviolet rays with an energy of an integrated light irradiation amount of 3000 mJ / cm 2 .
- the resin composition may be photocured to produce an active energy ray curable resin having a thickness of 500 ⁇ m, and the elastic modulus may be calculated by measuring the irradiated surface (surface) of the cured resin in the same manner as described above.
- a silicone rubber plug of No. 1 having a smaller end face (diameter: 12 mm) uniformly polished with # 240 polishing paper was used as a pseudo-fingerprint transfer material, and this polished end face was applied to the original plate at a load of 29 N for 10 seconds.
- the pseudo fingerprint component was transferred to the end face of the transfer material by pressing.
- the pseudo fingerprint component was transferred by pressing the end face of the transfer material with a load of 29 N for 10 seconds on the surface of the translucent substrate of each sample.
- the fingerprint pattern was transferred to a position near the radius of 40 mm of the medium.
- the artificial fingerprint solution was wiped off by rubbing 6 reciprocations at a pressure of 39 KPa, and the laminate remained dirty under a fluorescent lamp. It was visually observed. Evaluation was performed according to the following criteria.
- a friction tester (trade name: HEIDON TRIBOGEAR HHS-2000, manufactured by Osmosis Science Co., Ltd.) was used to measure the friction coefficient.
- a load of 1000 g was applied to a 2 cm square BEMCOT M-3II (trade name, manufactured by Asahi Kasei Fibers) placed on the surface of the laminate, and a reciprocating wear was performed 50 times at a reciprocating distance of 30 mm and a head speed of 30 mm / sec. It was.
- the value of the dynamic friction coefficient at the first friction was ⁇ 1
- the value of the friction coefficient at the 50th friction was ⁇ 50
- the slope of the friction coefficient was calculated from the following equation.
- ⁇ s ( ⁇ 50 - ⁇ 1 ) / (50-1) (Abrasion resistance)
- ⁇ s ( ⁇ 50 - ⁇ 1 ) / (50-1) (Abrasion resistance)
- the transparent article was affixed to one side of a transparent 2.0 mm thick black acrylic plate (trade name: Acrylite, manufactured by Mitsubishi Rayon Co.), and was visually evaluated by holding it over a fluorescent lamp indoors. . Evaluation was performed according to the following criteria.
- aqueous solution in which 6% by mass of phosphoric acid and 1.8% by mass of chromic acid were mixed to dissolve and remove the oxide film.
- the aluminum base material from which the oxide film was dissolved and removed was immersed in a 0.05 M oxalic acid aqueous solution adjusted to 16 ° C. and anodized at 80 V for 7 seconds. Subsequently, the aluminum substrate was immersed in a 5% by mass phosphoric acid aqueous solution adjusted to 32 ° C. for 20 minutes, and subjected to a pore diameter enlargement treatment for enlarging the pores of the oxide film. In this way, the anodizing treatment and the pore size enlargement treatment were repeated alternately.
- the anodization treatment and the pore diameter enlargement treatment were each performed 5 times.
- the obtained stamper was immersed in a 0.1% by weight aqueous solution of TDP-8 (manufactured by Nikko Chemicals Co., Ltd.) for 10 minutes, and then pulled up and dried overnight to perform a mold release treatment.
- the active energy ray-curable resin composition was photocured by irradiating ultraviolet rays from the film side with an energy of an integrated light irradiation amount of 1000 mJ / cm 2 . Thereafter, the film and the stamper were peeled off to obtain a laminate having a fine concavo-convex structure having a distance w1 between adjacent convex portions of 180 nm and a convex portion height d1 of 180 nm as shown in FIG.
- DPHA Dipentaerythritol hexaacrylate (manufactured by Nippon Kayaku Co., Ltd., “Kayarad DPHA”)
- M-260 Polyethylene glycol diacrylate (“Aronix M-260”, manufactured by Toa Gosei Co., Ltd., average repeating unit of polyethylene glycol chain is 13)
- APG-700 Polypropylene glycol diacrylate (manufactured by Shin-Nakamura Chemical Co., Ltd., average repeat
- Example 184 Hydroxycyclohexyl phenyl ketone ("Irgacure 184", manufactured by Ciba Specialty Chemicals) IRG. 819: Phenylbis (2,4,6-trimethylbenzoyl) -phosphine oxide (“Irgacure 819”, manufactured by Ciba Specialty Chemicals) TDP-2: Polyoxyethylene alkyl ether phosphoric acid (trade name, manufactured by Nikko Chemicals Co., Ltd.) [Examples A2 to A19] A laminate was obtained in the same manner as in Example A1, except that the active energy ray-curable resin composition having the composition shown in Table 1 was used. The results are shown in Table 2.
- Example A20 A laminate having a cured product layer was obtained in the same manner as in Example A1, except that the active energy ray-curable resin composition having the composition shown in Table 1 was used.
- PC-3B (trade name, manufactured by Fluoro Technology Co., Ltd.) was applied as a primer to the obtained cured product layer having a fine concavo-convex structure by spin coating. Thereafter, after drying at room temperature for 90 minutes, FG5070S135-0.1 (trade name, manufactured by Fluoro Technology) was spin-coated and dried at 60 ° C. for 3 hours to obtain a laminate having a surface treatment layer. The results are shown in Table 2.
- Example A3 A laminate was obtained in the same manner as in Example A1, except that the active energy ray-curable resin composition having the composition shown in Table 1 was used. The results are shown in Table 2.
- the laminates obtained in Examples A11 to A13 and A19 having a surface layer elastic modulus of 45 to 65 MPa and a surface layer water contact angle of 135 ° or more were particularly excellent in compatibility and antifouling property. .
- the laminates obtained in Examples A12 and A20 in which the elastic modulus of the surface layer is 50 to 65 MPa and the water contact angle of the surface layer is 140 ° or more are extremely excellent in compatibility, antifouling property and scratch resistance. An excellent laminate was obtained.
- Comparative Example A3 was inferior in scratch resistance, so that many scratches were generated on the surface layer during evaluation, and the surface layer was destroyed and peeled off, so the evaluation was interrupted.
- Example B Hereinafter, although this embodiment is concretely demonstrated by Example B, this invention is not limited to these.
- the active energy ray-curable resin composition was sandwiched between two glasses and irradiated with ultraviolet rays with an energy of 3000 mJ / cm 2 . Thereby, the active energy ray-curable resin composition was photocured to prepare a cured product of the active energy ray-curable resin composition having a thickness of 500 ⁇ m.
- FISCHERSCOPE® HM2000 trade name, manufactured by Fischer
- the surface of the cured product was increased in load under the condition of 50 mN / 10 seconds, held for 60 seconds, and then under the same conditions as the increase in load. Unloaded.
- the elastic modulus was calculated by extrapolation using points at which 65% and 95% loads were applied.
- the artificial fingerprint liquid (JIS K2246 made by Isekyu Corporation) was attached by the method described in JP-A-2006-147149, and the pseudo fingerprint was transferred onto the surface of the laminate. Specifically, about 1 mL of pseudo-fingerprint component was sampled with good stirring with a magnetic stirrer and applied to a polycarbonate substrate (diameter 120 mm, thickness 1.2 mm) by spin coating. The substrate was heated at 60 ° C. for 3 minutes to completely remove methoxypropanol, which is an unnecessary diluent. This was used as a master plate for pseudo-fingerprint transfer. Subsequently, NO. A silicone rubber plug of No.
- stamper> A ⁇ 65 mm aluminum disk having a purity of 99.99% by mass and an electropolished thickness of 2 mm was used as the aluminum substrate.
- the 0.3 M oxalic acid aqueous solution was adjusted to 15 ° C., the aluminum base material was immersed, and the power supply of the direct current stabilizing device was repeatedly turned on / off. Thereby, an electric current was intermittently passed through the aluminum base material to perform anodization.
- the operation of applying a constant voltage of 80 V every 30 seconds for 5 seconds was repeated 60 times to form an oxide film having pores. Subsequently, the aluminum base material on which the oxide film was formed was immersed in a 70 ° C.
- aqueous solution in which 6% by mass phosphoric acid and 1.8% by mass chromic acid were mixed to dissolve and remove the oxide film.
- the aluminum base material from which the oxide film was dissolved and removed was immersed in a 0.05 M oxalic acid aqueous solution adjusted to 16 ° C. and anodized at 80 V for 7 seconds. Subsequently, this was immersed in a 5% by mass phosphoric acid aqueous solution adjusted to 32 ° C. for 20 minutes, and subjected to a pore diameter enlargement treatment for enlarging the pores of the oxide film. As described above, the anodization and the pore diameter enlargement treatment were alternately repeated, and the treatment was performed five times in total.
- the obtained stamper was immersed in a 0.1% by weight aqueous solution of TDP-8 (trade name, manufactured by Nikko Chemicals Co., Ltd.) for 10 minutes, and then pulled up and air-dried overnight for release treatment.
- Aronix M-260 trade name, Toa Gosei Co., Ltd., ethylene glycol average repeating unit 13
- the polymerizable component includes 1 part by weight of Irgacure 184 (trade name, manufactured by BASF), 0.5 part of Irgacure 819 (trade name, manufactured by BASF), TDP-2 (trade name, manufactured by Nikko Chemicals) 0 .1 part by mass was dissolved. Thereby, an active energy ray-curable resin composition was obtained. While dropping a few drops of the active energy ray-curable resin composition on the stamper and spreading it with a triacetyl cellulose film (trade name: FTTD80ULM, manufactured by Fuji Film Co., Ltd., hereinafter also referred to as a film), the active energy is applied to the film. The wire curable resin composition was coated.
- the active energy ray-curable resin composition was photocured by irradiating ultraviolet rays with an energy of 1000 mJ / cm 2 from the film side.
- the stamper is peeled from the cured product of the active energy ray-curable resin composition, and the surface of the surface layer 12 has a fine concavo-convex structure shown in FIG. 1 in which the distance between adjacent convex portions is 180 nm and the height d1 of the convex portions is 180 nm.
- the laminate 10 is obtained.
- Examples B2 to B6 Comparative Examples B1 to B3
- a laminate was produced in the same manner as in Example B1, except that the types and blending amounts of the polymerizable component and polymerization initiator used were changed as shown in Table 1. The results are shown in Table 3.
- DPHA Dipentaerythritol hexaacrylate (trade name: Kayarad DPHA, manufactured by Nippon Kayaku Co., Ltd.)
- M-260 Polyethylene glycol diacrylate (manufactured by Toa Gosei Co., Ltd., the average repeating unit of ethylene glycol is 13)
- APG700 Polypropylene glycol diacrylate (manufactured by Toa Gos
- Irgacure 184 (trade name, manufactured by BASF, hydroxycyclohexyl phenyl ketone) IRG. 819: Irgacure 819 (trade name, manufactured by BASF, phenylbis (2,4,6-trimethylbenzoyl) -phosphine oxide)
- TDP-2 TDP-2 (trade name, manufactured by Nikko Chemicals Co., Ltd., polyoxyethylene alkyl ether phosphoric acid).
- Examples 1 to 6 and Comparative Examples 1 to 3 represent Examples B1 to B6 and Comparative Examples B1 to B3, respectively.
- Examples B1 to B6 since the elastic modulus was less than 200 MPa, the antifouling property was excellent, and dirt could be easily removed without using water or alcohol.
- the elastic modulus was in the range of 90 to 150 MPa.
- Comparative Examples B1 and B2 since the elastic modulus was 200 MPa or more, the antifouling property was insufficient, and the dirt could not be easily removed without using water or alcohol.
- Comparative Example B3 polypropylene glycol diacrylate was used instead of polyethylene glycol diacrylate, so the molecular mobility was low, antifouling property was insufficient, and dirt was easily removed without using water or alcohol. I could't.
- Example C Hereinafter, the present embodiment will be specifically described with reference to Example C, but the present invention is not limited thereto.
- ⁇ Transparent (good compatibility)
- ⁇ Although cloudy at room temperature, it becomes transparent when the active energy ray-curable resin composition is heated to 50 degrees.
- the irradiation surface of the surface layer was applied with increasing load under the condition of 50 mN / 10 seconds using “FISCHERSCOPE® HM2000” (trade name, manufactured by Fischer), held at 50 mN for 60 seconds, and then 50 mN Unload while reducing the load under the condition of / 10 seconds.
- the elastic modulus was calculated by extrapolation using points at which 65% and 95% loads were applied.
- An active energy ray-curable resin is obtained by using a Teflon sheet having a thickness of 500 ⁇ m as a spacer, sandwiching the active energy ray-curable composition between two glass plates, and irradiating ultraviolet rays with an energy of an integrated light irradiation amount of 3000 mJ / cm 2.
- the composition may be photocured to produce an active energy ray-cured resin having a thickness of 500 ⁇ m, and the elastic modulus may be calculated by measuring the irradiated surface of the cured resin in the same manner as described above.
- the smaller end face (diameter 12 mm) uniformly polished with # 240 polishing paper is used as a pseudo-fingerprint transfer material, and this polished end face is pressed against the original plate with a load of 29 N for 10 seconds to produce a pseudo-fingerprint component.
- the end face of the transfer material was pressed against the surface of the translucent substrate of each sample with a load of 29 N for 10 seconds. Transferring the pseudo fingerprint components.
- a fingerprint pattern, to transfer the pseudo-fingerprint on the surface laminate is adhered population fingerprint solution (JIS K2246 Isekyu Co.) with and transferred to the position of the radius 40mm near the medium.).
- ⁇ No white spots are observed when observed from an oblique direction.
- ⁇ White spots are observed when observed from an oblique direction, but no white spots are observed when observed from the front.
- aqueous solution in which 6% by mass of phosphoric acid and 1.8% by mass of chromic acid were mixed to dissolve and remove the oxide film.
- the aluminum base material from which the oxide film was dissolved and removed was immersed in a 0.05 M oxalic acid aqueous solution adjusted to 16 ° C. and anodized at 80 V for 7 seconds. Subsequently, the aluminum substrate was immersed in a 5% by mass phosphoric acid aqueous solution adjusted to 32 ° C. for 20 minutes, and subjected to a pore diameter enlargement treatment for enlarging the pores of the oxide film. In this way, the anodizing treatment and the pore size enlargement treatment were repeated alternately.
- the anodization treatment and the pore diameter enlargement treatment were each performed 5 times.
- the obtained stamper was immersed in a 0.1% by weight aqueous solution of TDP-8 (manufactured by Nikko Chemicals Co., Ltd.) for 10 minutes, and then pulled up and dried overnight to perform a mold release treatment.
- the active energy ray-curable resin composition was photocured by irradiating ultraviolet rays from the film side with an energy of an integrated light irradiation amount of 1000 mJ / cm 2 . Thereafter, the film and the stamper were peeled off to obtain a laminate having a fine concavo-convex structure having a distance w1 between adjacent convex portions of 180 nm and a convex portion height d1 of 180 nm as shown in FIG.
- M-260 Polyethylene glycol diacrylate (“Aronix M-260”, manufactured by Toa Gosei Co., Ltd., average repeating unit of polyethylene glycol chain is 13)
- APG-700 Polypropylene glycol diacrylate (manufactured by Shin-Nakamura Chemical Co., Ltd., average repeating unit of polypropylene glycol chain is 12)
- BYK-3570 Diluted product of silicone acrylate, propylene oxide-modified neopentyl glycol diacrylate (manufactured by Big Chemie Japan) IRG.
- Examples C2 to C8 A laminate was obtained in the same manner as in Example C1 except that the composition was changed to the composition shown in Table 4. The results are shown in Table 4.
- Example C1 A laminate was obtained in the same manner as in Example C1 except that the composition was changed to the composition shown in Table 4. The results are shown in Table 4.
- the water contact angle of the surface layer was 130 ° or more, and the antifouling property was able to be easily removed without using water or alcohol.
- the laminates obtained in Examples C5 to C7 exhibited very good antifouling properties because the silicone acrylate was 45 parts by mass or more. Further, in the laminate obtained in Examples C5 and C6, the silicone acrylate was 45 to 65 parts by mass, so the compatibility of the active energy ray-curable resin composition was good, and the coalescence of protrusions was suppressed. And showed very good antifouling properties.
- Example D Hereinafter, although this embodiment is concretely demonstrated by Example D, this invention is not limited to these.
- the elastic modulus (indentation elastic modulus) of the cured resin was calculated by extrapolation using points at which 65% and 95% loads were applied.
- a sheet coated with Teflon (registered trademark) having a thickness of 500 ⁇ m was used as a spacer, the active energy ray-curable composition was sandwiched between two glass plates, and ultraviolet rays were irradiated with an energy of an integrated light irradiation amount of 3000 mJ / cm 2.
- the active energy ray-curable resin composition may be photocured to produce an active energy ray-curable resin having a thickness of 500 ⁇ m, and the elastic modulus may be calculated by measuring the irradiated surface of the cured resin in the same manner as described above.
- the smaller end face (diameter 12 mm) uniformly polished with # 240 polishing paper is used as a pseudo-fingerprint transfer material, and this polished end face is pressed against the original plate with a load of 29 N for 10 seconds to produce a pseudo-fingerprint component.
- the end face of the transfer material was pressed against the surface of the translucent substrate of each sample with a load of 29 N for 10 seconds. Transferring the pseudo fingerprint components.
- a fingerprint pattern, to transfer the pseudo-fingerprint on the surface laminate is adhered population fingerprint solution (JIS K2246 Isekyu Co.) with and transferred to the position of the radius 40mm near the medium.).
- the artificial fingerprint liquid is wiped off by rubbing 6 reciprocations at a pressure of 98 KPa. It was observed visually. Evaluation was performed according to the following criteria.
- aqueous solution in which 6% by mass of phosphoric acid and 1.8% by mass of chromic acid were mixed to dissolve and remove the oxide film.
- the aluminum base material from which the oxide film was dissolved and removed was immersed in a 0.05 M oxalic acid aqueous solution adjusted to 16 ° C. and anodized at 80 V for 7 seconds. Subsequently, the aluminum substrate was immersed in a 5% by mass phosphoric acid aqueous solution adjusted to 32 ° C. for 20 minutes, and subjected to a pore diameter enlargement treatment for enlarging the pores of the oxide film. In this way, the anodizing treatment and the pore size enlargement treatment were repeated alternately.
- the anodization treatment and the pore diameter enlargement treatment were each performed 5 times.
- the obtained stamper was immersed in a 0.1% by weight aqueous solution of TDP-8 (manufactured by Nikko Chemicals) for 10 minutes, and then pulled up and dried overnight to perform a mold release treatment.
- the active energy ray-curable resin composition was dropped on a stamper and covered with a triacetyl cellulose film (FT
- the active energy ray-curable resin composition was photocured by irradiating ultraviolet rays with an energy of 1000 mJ / cm 2 from the film side.
- the film and the stamper were peeled off, and PC-3B (trade name, manufactured by Fluoro Technology Co., Ltd.) was used as a primer on the surface layer having the fine concavo-convex structure obtained with Bencott M-3II (manufactured by Asahi Kasei Fibers)
- Bencott M-3II manufactured by Asahi Kasei Fibers
- FG5070S135-0.1 (trade name, manufactured by Fluoro Technology) was brushed with Bencott and dried at 60 ° C. for 3 hours.
- the active energy ray-curable resin composition was photocured by irradiating ultraviolet rays from the film side with an energy of an integrated light irradiation amount of 1000 mJ / cm 2 to form a surface treatment layer.
- the film and the stamper were peeled off to obtain a laminate having a fine concavo-convex structure having a distance w1 between adjacent convex portions of 180 nm and a convex portion height d1 of 180 nm as shown in FIG.
- BYK-3570 Diluted product of silicone acrylate, propylene oxide-modified neopentyl glycol diacrylate (manufactured by Big Chemie Japan)
- TAS Mixture obtained by condensation reaction of trimethylolethane / acrylic acid / succinic anhydride at 2/4/1 (manufactured by Osaka Organic Chemical Industry Co., Ltd.)
- M-260 Polyethylene glycol diacrylate (“Aronix M-260”, manufactured by Toa Gosei Co., Ltd., average repeating unit of polyethylene glycol chain is 13)
- X-22-1602 Silicone acrylate (manufactured by Shin-Etsu Chemical Co., Ltd.)
- C6DA
- Example D2 A laminate was obtained in the same manner as in Example D1 except that the composition was changed to the composition shown in Table 5. The results are shown in Table 5.
- the water contact angle of the surface layer was 120 ° or more, and the antifouling property was able to be easily removed without using water or alcohol.
- the elastic modulus was 100 MPa or less, and the water contact angle was 130 ° or more, and thus very good antifouling property was exhibited.
- Example E Hereinafter, the present embodiment will be specifically described with reference to Example E, but the present invention is not limited thereto.
- An active energy ray-curable composition is obtained by using a Teflon sheet having a thickness of 500 ⁇ m as a spacer, sandwiching the active energy ray-curable composition between two glass plates, and irradiating ultraviolet rays with an energy of an integrated light irradiation amount of 3000 mJ / cm 2.
- the product can be photocured to produce an active energy ray curable resin having a thickness of 500 ⁇ m, and the elastic modulus can be calculated by measuring the irradiated surface of the cured resin in the same manner as described above.
- An antifouling test was conducted according to the method described in JP-A-2006-147149. First, about 1 mL of the pseudo-fingerprint component was collected while stirring well with a magnetic stirrer, and applied to a polycarbonate substrate (diameter 120 mm, thickness 1.2 mm) by spin coating. The substrate was heated at 60 ° C. for 3 minutes to completely remove methoxypropanol, which is an unnecessary diluent. This was used as a master plate for pseudo-fingerprint transfer.
- the smaller end face (diameter 12 mm) of the silicone rubber plug of No. 1 was uniformly polished with # 240 polishing paper as a pseudo-fingerprint transfer material.
- the pseudo fingerprint component was transferred to the end face of the transfer material by pressing with a load of 29 N for 10 seconds.
- the pseudo-fingerprint component was transferred to the surface of the laminate of each sample by pressing the transfer material end face with a load of 29 N for 10 seconds.
- the fingerprint pattern was transferred to a position near the radius of 40 mm of the medium.
- the pseudo-fingerprint component was wiped off by rubbing 6 reciprocations at a pressure of 98 KPa. It was observed visually. Evaluation was performed according to the following criteria.
- ⁇ No white spots are observed when observed from an oblique direction.
- ⁇ White spots are observed when observed from an oblique direction, but no white spots are observed when observed from the front.
- aqueous solution in which 6% by mass of phosphoric acid and 1.8% by mass of chromic acid were mixed to dissolve and remove the oxide film.
- the aluminum base material from which the oxide film was dissolved and removed was immersed in a 0.05 M oxalic acid aqueous solution adjusted to 16 ° C. and anodized at 80 V for 5 seconds. Subsequently, the aluminum substrate was immersed in a 5% by mass phosphoric acid aqueous solution adjusted to 32 ° C. for 20 minutes, and subjected to a pore diameter enlargement treatment for enlarging the pores of the oxide film. In this way, the anodizing treatment and the pore size enlargement treatment were repeated alternately.
- the anodization treatment and the pore diameter enlargement treatment were each performed 5 times.
- the obtained stamper was immersed in a 0.1% by weight aqueous solution of TDP-8 (manufactured by Nikko Chemicals Co., Ltd.) for 10 minutes, and then pulled up and dried overnight to perform a mold release treatment.
- Example E1 ⁇ Manufacture of laminates> The following materials were mixed to prepare an active energy ray-curable composition. ⁇ Ethylene oxide-modified dipentaerythritol hexaacrylate (“Kayarad DPEA-12”, 22 parts by mass of ethylene oxide structural unit in one molecule, manufactured by Nippon Kayaku Co., Ltd.) ⁇ Aronix M-260 (trade name, Toa Gosei) The average repeating unit of polyethylene glycol chain is 13) 32 parts by mass APG-700 (trade name, manufactured by Shin-Nakamura Chemical Co., Ltd., the average repeating unit of polypropylene glycol chain is 12) 32 parts by mass.
- BYK-3570 (trade name) , Manufactured by Big Chemie Japan Co., Ltd., silicone acrylate, propylene oxide modified neopentyl glycol diacrylate diluted product) 9 parts by mass, Karenz MT PE1 (trade name, Showa Denko KK, compound having four SH groups) 5 parts by mass, Irgacure 184 (Product name, Ciba Specialty 1 part by mass of Micals Co., Ltd.
- DPHA Dipentaerythritol hexaacrylate (Daiichi Kogyo Seiyaku Co., Ltd.)
- M-260 Polyethylene glycol diacrylate (“Aronix M-260”, manufactured by Toa Gosei Co., Ltd., average repeating unit of polyethylene glycol chain is 13)
- APG-700 (trade name, manufactured by Shin-Nakamura Chemical Co.,
- Examples E2 to E13, Comparative Example E1 A laminate was obtained in the same manner as in Example E1 except that the composition was changed to the composition shown in Table 6. The results are shown in Table 7.
- the laminates obtained in Examples E2 to E13 exhibited antifouling properties that can easily remove dirt without using water or alcohol.
- Examples E2 to E11 exhibited good antifouling properties because the indentation elastic modulus was 500 MPa or less and the water contact angle was 130 ° or more. Among them, Examples 1 to 6, 8, and 10 exhibited particularly good antifouling properties because the indentation elastic modulus was 100 MPa or less. In Examples E12 and E13, since the amount of the SH group-containing compound was large, good antifouling properties were exhibited even though the water contact angle was 130 ° or less.
- the laminate of this embodiment can easily remove dirt while maintaining excellent optical performance, it can be used for various displays such as TVs, mobile phones, and portable game machines, touch panels, showcases, exterior covers, etc. It is possible and is very useful industrially.
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Abstract
Description
図1は、本実施形態に係る積層体10の構成の一例を示す模式的断面図である。図1において、透明性を有する基材11の表面に活性エネルギー線硬化性樹脂組成物の硬化物からなる表層12が形成されている。積層体10において、表層12の表面に微細凹凸構造が形成されている。
上述のように、表層は活性エネルギー線硬化性樹脂組成物の硬化物から構成されることができ、本実施形態の積層体において、活性エネルギー線硬化性樹脂組成物がSH基を有する化合物(D)を含むことが好ましい。SH基とはチオール基、水硫基、メルカプト基、又はスルフヒドリル基のことである。SH基を有する化合物が活性エネルギー線硬化性樹脂組成物中に含まれることにより、硫黄原子と硫黄原子または炭素原子との化学結合が得られる。そうすると、硬化物の架橋密度を維持したまま弾性率を下げることができるため、突起の形状を維持しつつ突起にフレキシビリティを付与でき、凹部に溜まった汚れを除去できるようになるため防汚性が向上する。
表層は、上述の活性エネルギー線硬化性樹脂組成物の硬化物からなる層と、該活性エネルギー線硬化性樹脂組成物の硬化物からなる層の上に形成された、最表面層としての表面処理層とから構成されることもできる。
以下、本実施形態を詳細に説明する。
以下、本実施形態について詳細に説明する。
以下、本実施形態について詳細に説明する。
以下、本実施形態について詳細に説明する。
以下、本実施形態を実施例Aにより具体的に説明するが、本発明はこれらに限定されるものではない。
(硬化液相溶性の判定)
相溶性の評価として、活性エネルギー線硬化性樹脂組成物(硬化させる前の状態)の透明性を蛍光灯下で目視観察した。
B:室温では白濁しているが活性エネルギー線硬化性樹脂組成物を50度に加熱すると透明になる。
(水接触角の判定)
自動接触角測定装置(KRUSS社製)を用いて、後述する実施例Aおよび比較例Aにおいて作製した活性エネルギー線硬化性樹脂組成物の硬化樹脂(活性エネルギー線硬化樹脂)の表面に1μLの水を滴下し、滴下してから7秒後の水滴の接触角をθ/2法にて算出した。
表層の表面を、「FISCHERSCOPE(R) HM2000」(商品名、フィッシャー社製)を用いて、50mN/10秒の条件で荷重を増加させながら荷重を加え、50mNで60秒間保持した後、50mN/10秒の条件で荷重を減少させながら除荷する。その際の65%と95%の荷重がかかった点を用いて、外挿法により弾性率を計算した。なお、厚み500μmのテフロンシートをスペーサーとして用い、活性エネルギー線硬化性樹脂組成物を2枚のガラス板で挟み込み、積算光照射量3000mJ/cm2のエネルギーで紫外線を照射して活性エネルギー線硬化性樹脂組成物を光硬化させ、厚み500μmの活性エネルギー線硬化樹脂を作製し、該硬化樹脂の照射面(表面)について前記同様に測定し弾性率を計算してもよい。
まず、特開2006-147149号公報に記載の方法で人工指紋液(JIS K2246 伊勢久社製)を付着させ積層体に表面に疑似指紋を転写した。この方法において、まず、擬似指紋成分をマグネティックスターラーでよく攪拌しながら約1mL採取し、この擬似指紋成分をポリカーボネート製基板(直径120mm、厚さ1.2mm)上にスピンコート法により塗布した。この基板を60℃で3分間加熱することにより、不要な希釈剤であるメトキシプロパノールを完全に除去した。これを擬似指紋転写用の原版とした。続いて、NO.1のシリコーンゴム栓の、小さい方の端面(直径12mm)を、#240の研磨紙で一様に研磨したものを擬似指紋転写材とし、この研磨した端面を、上記原版に荷重29Nで10秒間押し当てて擬似指紋成分を転写材の端面に移行させた。次いで、上記各サンプルの透光性基体表面に、上記転写材端面を荷重29Nで10秒間押し当てて擬似指紋成分を転写した。なお、指紋パターンは、媒体の半径40mm近傍の位置に転写した。
LED光をフィルム端面側(側面側)から入射し、入射方向から観測した際に、白い斑が見えるかを目視で観察した。評価は以下の基準で行った。
摩擦係数の測定には、摩擦試験機(商品名:HEIDON TRIBOGEAR HHS-2000、浸透科学社製)を用いた。積層体の表面に置かれた2cm四方のBEMCOT M-3II(商品名、旭化成せんい社製)に1000gの荷重を加え、往復距離:30mm、ヘッドスピード:30mm/秒にて50回往復磨耗を行った。1回目の摩擦時の動摩擦係数の値をμ1、50回目の摩擦時の同摩擦係数の値をμ50とし、下記式より摩擦係数の傾きを算出した。
(耐擦傷性)
耐擦傷性の評価には、前述の方法を用いて1000回往復磨耗を行った。外観評価に際しては、透明な2.0mm厚の黒色アクリル板(商品名:アクリライト、三菱レイヨン社製)mp片面に該光透過性物品を貼り付け、屋内で蛍光灯にかざして目視で評価した。評価は以下の基準で行った。
B:目視で数本の傷が確認される。
走査電子顕微鏡(日本電子社製、「JSM‐7400F」)を用いて、加速電圧3.00kVの条件で、スタンパおよび積層体の表面に形成された微細凹凸構造を観察した。なお、積層体の観察に関しては、プラチナを10分間蒸着した後に観察を行った。得られた画像から、隣り合う凸部同士の距離と凸部の高さを測定した。それぞれ10点ずつ測定し、平均値を求めた。
電解研磨されたアルミニウム円盤(純度99.99質量%、厚さ2mm、φ65mm)をアルミニウム基材として用いた。15℃に調整した0.3Mシュウ酸水溶液にアルミニウム基材を浸漬させて、直流安定化装置の電源のON/OFFを繰り返すことでアルミニウム基材に間欠的に電流を流すことにより、アルミニウム基材を陽極酸化させた。次に、30秒おきに80Vの定電圧を5秒間印加する操作を60回繰り返し、細孔を有する酸化皮膜を形成した。続いて、酸化皮膜を形成したアルミニウム基材を6質量%のリン酸と1.8質量%のクロム酸を混合した70℃の水溶液中に6時間浸漬させて、酸化皮膜を溶解除去した。酸化皮膜を溶解除去したアルミニウム基材を16℃に調整した0.05Mのシュウ酸水溶液に浸漬させて80Vで7秒間陽極酸化を施した。続いて、アルミニウム基材を32℃に調整した5質量%リン酸水溶液中に20分間浸漬させて、酸化皮膜の細孔を拡大する孔径拡大処理を施した。このように陽極酸化処理と孔径拡大処理を交互に繰り返した。陽極酸化処理と孔径拡大処理はそれぞれ5回ずつ行った。得られたスタンパをTDP-8(日光ケミカルズ株式会社製)の0.1質量%水溶液に10分間浸漬させた後、引き上げて一晩乾燥させることにより、離型処理を施した。
<積層体の製造>
以下の材料を混合して活性エネルギー線硬化性樹脂組成物を調製した。
・エチレンオキサイド変性ジペンタエリスリトールヘキサアクリレート(「カヤラッドDPEA-12」、1分子内のエチレンオキサイド構造単位数n=12、日本化薬社製)40質量部
・アロニックスM-260(商品名、東亜合成社製、ポリエチレングリコール鎖の平均繰り返し単位は13)60質量部
・イルガキュア184(商品名、チバ・スペシャリティーケミカルズ社製)1質量部
・イルガキュア819(商品名、チバ・スペシャリティーケミカルズ社製)0.5部
・TDP-2(商品名、日光ケミカルズ株式会社製)0.1質量部
該活性エネルギー線硬化性樹脂組成物をスタンパ上に数滴垂らし、トリアセチルセルロースフィルム(FTTD80ULM(商品名)、富士フィルム社製)で押し広げながらスタンパを被覆した。続いて、フィルム側から積算光照射量1000mJ/cm2のエネルギーで紫外線を照射して活性エネルギー線硬化性樹脂組成物を光硬化させた。その後、フィルムとスタンパを剥離して、図1に示すような、隣り合う凸部同士の距離w1が180nm、凸部の高さd1が180nmの微細凹凸構造を有する積層体を得た。
活性エネルギー線硬化性樹脂組成物における成分の相溶性及び得られた積層体に関する水接触角、弾性率、防汚性、摩擦係数の傾き(μs)、耐擦傷性、突起合一の各評価を行った。結果を表2に示す。
DPEA-12:エチレンオキサイド変性ジペンタエリスリトールヘキサアクリレート(日本化薬社製、「カヤラッドDPEA-12」、1分子内のエチレンオキサイド構造単位数n=12)
DPEA-18(第一工業製薬社製、「商品名DPHA-18EO変性」、1分子内のエチレンオキサイド構造単位数n=18)
M-260:ポリエチレングリコールジアクリレート(「アロニックスM-260」、東亜合成社製、ポリエチレングリコール鎖の平均繰り返し単位は13)
APG-700:ポリプロピレングリコールジアクリレート(新中村化学社製、ポリプロピレングリコール鎖の平均繰り返し単位は12)
BYK-UV3570:シリコーンアクリレート プロピレンオキサイド変性ネオペンチルグリコールジアクリレート希釈品(ビッグケミー・ジャパン社製)
PE1:カレンズMT PE1(商品名、昭和電工社製、SH基を4つ有する化合物)
IRG.184:ヒドロキシシクロヘキシルフェニルケトン(「イルガキュア184」、チバ・スペシャリティーケミカルズ社製)
IRG.819:フェニルビス(2,4,6-トリメチルベンゾイル)-ホスフィンオキシド(「イルガキュア819」、チバ・スペシャリティーケミカルズ社製)
TDP-2:ポリオキシエチレンアルキルエーテルリン酸(商品名、日光ケミカルズ株式会社製)
[実施例A2~A19]
表1に示す組成の活性エネルギー線硬化性樹脂組成物を用いた以外は、実施例A1と同様にして積層体を得た。結果を表2に示す。
表1に示す組成の活性エネルギー線硬化性樹脂組成物を用いた以外は、実施例A1と同様にして、硬化物層を有する積層体を得た。得られた微細凹凸構造を有する硬化物層にプライマーとしてPC-3B(商品名、フロロテクノロジー社製)をスピンコートによって塗布した。その後、常温で90分乾燥した後、FG5070S135-0.1(商品名、フロロテクノロジー社製)をスピンコーティングし、60℃で3時間乾燥し、表面処理層を有する積層体を得た。結果を表2に示す。
表1に示す組成の活性エネルギー線硬化性樹脂組成物を用いた以外は、実施例A1と同様にして積層体を得た。結果を表2に示す。
以下、本実施形態を実施例Bにより具体的に説明するが、本発明はこれらに限定されない。
(水接触角の測定)
自動接触角測定装置(KRUSS社製)を用いて、1μlの水を後述する実施例Bおよび比較例Bにおいて作製した積層体の表層の表面に滴下した。7秒後の接触角をθ/2法にて算出した。
厚み500μmのテフロンシートをスペーサーとして用い、活性エネルギー線硬化性樹脂組成物を2枚のガラスで挟み込み、3000mJ/cm2のエネルギーで紫外線を照射した。これにより、活性エネルギー線硬化性樹脂組成物を光硬化し、厚み500μmの活性エネルギー線硬化性樹脂組成物の硬化物を作製した。該硬化物の照射面を、「FISCHERSCOPE(R) HM2000」(商品名、フィッシャー社製)を用いて、50mN/10秒の条件で荷重増加し、60秒間保持した後、荷重増加と同条件で除荷した。その際の65%と95%の荷重がかかった点を使用して、外挿法により弾性率を計算した。
特開2006-147149号公報に記載の方法で人口指紋液(JIS K2246 伊勢久社製)を付着させ、積層体の表面に疑似指紋を転写した。具体的には、擬似指紋成分について、マグネティックスターラーでよく攪拌しながら約1mL採取し、ポリカーボネート製基板(直径120mm、厚さ1.2mm)上にスピンコート法により塗布した。この基板を60℃で3分間加熱することにより、不要な希釈剤であるメトキシプロパノールを完全に除去した。これを擬似指紋転写用の原版とした。続いて、NO.1のシリコーンゴム栓の、小さい方の端面(直径12mm)を、#240の研磨紙で一様に研磨したものを擬似指紋転写材とし、この研磨した端面を、前記原版に荷重29Nで10秒間押し当てて擬似指紋成分を転写材の端面に移行させた。次いで、前記各サンプルの透光性基体表面に、前記転写材端面を荷重29Nで10秒間押し当てて擬似指紋成分を転写した。なお、指紋パターンは、媒体の半径40mm近傍の位置に転写した。次に、プロワイプ(商品名:ソフトスーパーワイパーS132 大王製紙(株)製)を用いて98KPaの圧力で6往復擦ることにより人口指紋液を拭き取った後、蛍光灯下で積層体に汚れが残っているかを目視で観察した。評価は以下の基準で行った。
○:汚れが目視では確認されない。
×:疑似指紋がのび広がり、汚れが拭き取れない。
走査電子顕微鏡(商品名:「JSM-7400F」、日本電子(株)製)を用いて、加速電圧3.00kvの条件で、スタンパおよび積層体の表層の表面に形成された微細凹凸構造を観察した。なお、積層体の表層の観察に関しては、プラチナを10分間蒸着した後に観察を行った。得られた画像から、隣り合う凸部同士の距離と凸部の高さを測定した。
LED光を積層体のフィルム端面側(側面側)から入射し、入射方向から観測した際に、白い斑が見えるか否かを目視で観察した。評価は以下の基準で行った。
○:斜めから観察した際に白い斑がみられない。
△:正面から観察した際に白い斑がみられない。
×:正面から観察した際に白い斑がみられる。
純度99.99質量%、電解研磨した厚さ2mmのφ65mmアルミニウム円盤をアルミニウム基材として用いた。0.3Mシュウ酸水溶液を15℃に調整し、該アルミニウム基材を浸漬して、直流安定化装置の電源のON/OFFを繰り返した。これにより、アルミニウム基材に間欠的に電流を流し、陽極酸化を行った。30秒おきに80Vの定電圧を5秒間印加する操作を60回繰り返し、細孔を有する酸化皮膜を形成した。続いて、酸化皮膜を形成したアルミニウム基材を、6質量%リン酸と、1.8質量%クロム酸とを混合した70℃の水溶液中に6時間浸漬して、酸化皮膜を溶解除去した。酸化皮膜を溶解除去したアルミニウム基材を、16℃に調整した0.05Mのシュウ酸水溶液に浸漬して80Vで7秒間陽極酸化を施した。続いて、これを32℃に調整した5質量%リン酸水溶液中に20分間浸漬して、酸化皮膜の細孔を拡大する孔径拡大処理を施した。このように、陽極酸化と孔径拡大処理とを交互に繰り返し、合計5回ずつ施した。得られたスタンパを、TDP-8(商品名、日光ケミカルズ(株)製)の0.1質量%水溶液に10分間浸漬し、引き上げて一晩風乾することにより離型処理を施した。
<積層体の製造>
エチレンオキサイド変性ジペンタエリスリトールヘキサアクリレート(商品名:カヤラッドDPEA-12、日本化薬(株)製、1分子内のエチレンオキサイド構造単位数n=12)40質量部、アロニックスM-260(商品名、東亜合成(株)製、エチレングリコールの平均繰り返し単位は13)60質量部を重合性成分として用いた。該重合性成分に、イルガキュア184(商品名、BASF社製)1質量部、イルガキュア819(商品名、BASF社製)0.5部、TDP-2(商品名、日光ケミカルズ(株)製)0.1質量部を溶解させた。これにより、活性エネルギー線硬化性樹脂組成物を得た。該活性エネルギー線硬化性樹脂組成物を前記スタンパ上に数滴垂らし、トリアセチルセルロースフィルム(商品名:FTTD80ULM、富士フィルム(株)製、以下フィルムとも示す)で押し広げながら、フィルムに該活性エネルギー線硬化性樹脂組成物を被覆した。その後、フィルム側から1000mJ/cm2のエネルギーで紫外線を照射して活性エネルギー線硬化性樹脂組成物を光硬化させた。活性エネルギー線硬化性樹脂組成物の硬化物からスタンパを剥離して、図1に示す、隣り合う凸部同士の間隔が180nm、凸部の高さd1が180nmの微細凹凸構造を表層12の表面に有する積層体10を得た。
前述した各種評価および測定方法に基づき、水接触角、弾性率、防汚性および突起合一の各評価を行った。結果を表3に示す。
活性エネルギー線硬化性樹脂組成物の調製において、用いる重合性成分、重合開始剤などの種類および配合量を表1に示すように変更した以外は、実施例B1と同様に積層体を製造した。結果を表3に示す。
DPHA:ジペンタエリスリトールヘキサアクリレート(商品名:カヤラッドDPHA、日本化薬(株)製)
DPEA-12:エチレンオキサイド変性ジペンタエリスリトールヘキサアクリレート(商品名:カヤラッドDPEA-12、日本化薬(株)製、1分子内のエチレンオキサイド構造単位数n=12)
DPEA-18:エチレンオキサイド変性ジペンタエリスリトールヘキサアクリレート(商品名:DPEA-18、第一工業製薬(株)製、1分子内のエチレンオキサイド構造単位数n=18)
M-260:ポリエチレングリコールジアクリレート(東亜合成(株)製、エチレングリコールの平均繰り返し単位は13)
APG700:ポリプロピレングリコールジアクリレート(新中村化学工業(株)製、プロピレングリコールの平均繰り返し単位は12)
IRG.184:イルガキュア184(商品名、BASF社製、ヒドロキシシクロヘキシルフェニルケトン)
IRG.819:イルガキュア819(商品名、BASF社製、フェニルビス(2,4,6-トリメチルベンゾイル)-ホスフィンオキシド)
TDP-2:TDP-2(商品名、日光ケミカルズ(株)製、ポリオキシエチレンアルキルエーテルリン酸)。
以下、本実施形態を実施例Cにより具体的に説明するが、本発明はこれらに限定されるものではない。
(硬化液相溶性の判定)
相溶性の評価として、活性エネルギー線硬化性樹脂組成物(硬化させる前の状態)の透明性を蛍光灯下で目視観察した。
△:室温では白濁しているが活性エネルギー線硬化性樹脂組成物を50度に加熱すると透明になる。
(水接触角の判定)
自動接触角測定装置(KRUSS社製)を用いて、1μlの水を後述する実施例Cおよび比較例Cにおいて作製した活性エネルギー線硬化性樹脂組成物の硬化樹脂(活性エネルギー線硬化樹脂)の表面に水を滴下し、滴下してから7秒後の水滴の接触角をθ/2法にて算出した。
表層の照射面を、「FISCHERSCOPE(R) HM2000」(商品名、フィッシャー社製)を用いて、50mN/10秒の条件で荷重を増加させながら荷重を加え、50mNで60秒間保持した後、50mN/10秒の条件で荷重を減少させながら除荷する。その際の65%と95%の荷重がかかった点を用いて、外挿法により弾性率を計算した。なお、厚み500μmのテフロンシートをスペーサーとして用い、活性エネルギー線硬化性組成物を2枚のガラス板で挟み込み、積算光照射量3000mJ/cm2のエネルギーで紫外線を照射して活性エネルギー線硬化性樹脂組成物を光硬化させ、厚み500μmの活性エネルギー線硬化樹脂を作製し、該硬化樹脂の照射面について前記同様に測定し弾性率を計算してもよい。
特開2006-147149号公報に記載の方法(擬似指紋成分について、マグネティックスターラーでよく攪拌しながら約1mL採取し、ポリカーボネート製基板(直径120mm、厚さ1.2mm)上にスピンコート法により塗布した。この基板を60℃で3分間加熱することにより、不要な希釈剤であるメトキシプロパノールを完全に除去した。これを擬似指紋転写用の原版とした。続いて、NO.1のシリコーンゴム栓の、小さい方の端面(直径12mm)を、#240の研磨紙で一様に研磨したものを擬似指紋転写材とし、この研磨した端面を、上記原版に荷重29Nで10秒間押し当てて擬似指紋成分を転写材の端面に移行させた。次いで、上記各サンプルの透光性基体表面に、上記転写材端面を荷重29Nで10秒間押し当てて擬似指紋成分を転写した。なお、指紋パターンは、媒体の半径40mm近傍の位置に転写した。)で人口指紋液(JIS K2246 伊勢久社製)を付着させ積層体に表面に疑似指紋を転写した。次に、プロワイプ(商品名:ソフトスーパーワイパーS132 大王製紙(株)製)を用いて98KPaの圧力で6往復擦ることにより人口指紋液を拭き取った後、蛍光灯下で積層体に汚れが残っているかを目視で観察した。評価は以下の基準で行った。
LED光をフィルム端面側(側面側)から入射し、入射方向から観測した際に、白い斑が見えるかを目視で観察した。評価は以下の基準で行った。
走査電子顕微鏡(日本電子社製、「JSM‐7400F」)を用いて、加速電圧3.00kVの条件で、スタンパおよび積層体の表面に形成された微細凹凸構造を観察した。なお、積層体の観察に関しては、プラチナを10分間蒸着した後に観察を行った。得られた画像から、隣り合う凸部同士の距離と凸部の高さを測定した。それぞれ10点ずつ測定し、平均値を求めた。
電解研磨されたアルミニウム円盤(純度99.99質量%、厚さ2mm、φ65mm)をアルミニウム基材として用いた。15℃に調整した0.3Mシュウ酸水溶液にアルミニウム基材を浸漬させて、直流安定化装置の電源のON/OFFを繰り返すことでアルミニウム基材に間欠的に電流を流すことにより、アルミニウム基材を陽極酸化させた。次に、30秒おきに80Vの定電圧を5秒間印加する操作を60回繰り返し、細孔を有する酸化皮膜を形成した。続いて、酸化皮膜を形成したアルミニウム基材を6質量%のリン酸と1.8質量%のクロム酸を混合した70℃の水溶液中に6時間浸漬させて、酸化皮膜を溶解除去した。酸化皮膜を溶解除去したアルミニウム基材を16℃に調整した0.05Mのシュウ酸水溶液に浸漬させて80Vで7秒間陽極酸化を施した。続いて、アルミニウム基材を32℃に調整した5質量%リン酸水溶液中に20分間浸漬させて、酸化皮膜の細孔を拡大する孔径拡大処理を施した。このように陽極酸化処理と孔径拡大処理を交互に繰り返した。陽極酸化処理と孔径拡大処理はそれぞれ5回ずつ行った。得られたスタンパをTDP-8(日光ケミカルズ株式会社製)の0.1質量%水溶液に10分間浸漬させた後、引き上げて一晩乾燥させることにより、離型処理を施した。
<積層体の製造>
以下の材料を混合して活性エネルギー線硬化性樹脂組成物を調製した。
・エチレンオキサイド変性ジペンタエリスリトールヘキサアクリレート(「カヤラッドDPEA-12」、1分子内のエチレンオキサイド構造単位数n=12、日本化薬社製)27質量部、
・アロニックスM-260(商品名、東亜合成社製、ポリエチレングリコール鎖の平均繰り返し単位は13)64質量部
・BYK-3570(商品名、ビッグケミー・ジャパン社製、4官能シリコーンアクリレート/プロピレンオキサイド変性ネオペンチルグリコールジアクリレート=7/3)9質量部
・イルガキュア184(商品名、チバ・スペシャリティーケミカルズ社製)1質量部
・イルガキュア819(商品名、チバ・スペシャリティーケミカルズ社製)0.5部
・TDP-2(商品名、日光ケミカルズ株式会社製)0.1質量部
該活性エネルギー線硬化性樹脂組成物をスタンパ上に数滴垂らし、トリアセチルセルロースフィルム(FTTD80ULM(商品名)、富士フィルム社製)で押し広げながら被覆した。続いて、フィルム側から積算光照射量1000mJ/cm2のエネルギーで紫外線を照射して活性エネルギー線硬化性樹脂組成物を光硬化させた。その後、フィルムとスタンパを剥離して、図1に示すような、隣り合う凸部同士の距離w1が180nm、凸部の高さd1が180nmの微細凹凸構造を有する積層体を得た。
活性エネルギー線硬化性樹脂組成物における成分の相溶性及び得られた積層体に関する水接触角、弾性率、防汚性、突起の合一性の各評価を行った。結果を表4に示す。
M-260:ポリエチレングリコールジアクリレート(「アロニックスM-260」、東亜合成社製、ポリエチレングリコール鎖の平均繰り返し単位は13)
APG-700:ポリプロピレングリコールジアクリレート(新中村化学社製、ポリプロピレングリコール鎖の平均繰り返し単位は12)
BYK-3570:シリコーンアクリレート プロピレンオキサイド変性ネオペンチルグリコールジアクリレート希釈品(ビッグケミー・ジャパン社製)
IRG.184:ヒドロキシシクロヘキシルフェニルケトン(「イルガキュア184」、チバ・スペシャリティーケミカルズ社製)
IRG.819:フェニルビス(2,4,6-トリメチルベンゾイル)-ホスフィンオキシド(「イルガキュア819」、チバ・スペシャリティーケミカルズ社製)
TDP-2:ポリオキシエチレンアルキルエーテルリン酸(商品名、日光ケミカルズ株式会社製)
なお、表4において、実施例1~8及び比較例1はそれぞれ実施例C1~C8及び比較例C1を示す。
表4に示す組成に変更した以外は実施例C1と同様にして積層体を得た。結果を表4に示す。
表4に示す組成に変更した以外は実施例C1と同様にして積層体を得た。結果を表4に示す。
以下、本実施形態を実施例Dにより具体的に説明するが、本発明はこれらに限定されるものではない。
(水接触角の判定)
自動接触角測定装置(KRUSS社製)を用いて、1μlの水を後述する実施例Dおよび比較例Dにおいて作製した積層体の表面に水を滴下し、滴下してから7秒後の水滴の接触角をθ/2法にて算出した。
厚み500μmのテフロン(登録商標)でコーティングしたシートをスペーサーとして用い、活性エネルギー線硬化性組成物を2枚のガラス板で挟み込み、3000mJ/cm2のエネルギーで紫外線を照射して活性エネルギー線硬化性樹脂組成物を光硬化させ、厚み500μmの活性エネルギー線硬化樹脂を作製し、照射面側に表面処理層をコーティングし積層体を得た。作製した積層の表面処理層面をフィッシャー社製「FISCHERSCOPE(R) HM2000」を用いて、50mN/10秒の条件で荷重を増加させながら荷重を加え、50mNで60秒間保持した後、50mN/10秒の条件で荷重を減少させながら除荷した。その際の65%と95%の荷重がかかった点を用いて外挿法により硬化樹脂の弾性率(押込み弾性率)を計算した。なお、厚み500μmのテフロン(登録商標)でコーティングしたシートをスペーサーとして用い、活性エネルギー線硬化性組成物を2枚のガラス板で挟み込み、積算光照射量3000mJ/cm2のエネルギーで紫外線を照射して活性エネルギー線硬化性樹脂組成物を光硬化させ、厚み500μmの活性エネルギー線硬化樹脂を作製し、該硬化樹脂の照射面について前記同様に測定し弾性率を計算してもよい。
特開2006-147149号公報に記載の方法(擬似指紋成分について、マグネティックスターラーでよく攪拌しながら約1mL採取し、ポリカーボネート製基板(直径120mm、厚さ1.2mm)上にスピンコート法により塗布した。この基板を60℃で3分間加熱することにより、不要な希釈剤であるメトキシプロパノールを完全に除去した。これを擬似指紋転写用の原版とした。続いて、NO.1のシリコーンゴム栓の、小さい方の端面(直径12mm)を、#240の研磨紙で一様に研磨したものを擬似指紋転写材とし、この研磨した端面を、上記原版に荷重29Nで10秒間押し当てて擬似指紋成分を転写材の端面に移行させた。次いで、上記各サンプルの透光性基体表面に、上記転写材端面を荷重29Nで10秒間押し当てて擬似指紋成分を転写した。なお、指紋パターンは、媒体の半径40mm近傍の位置に転写した。)で人口指紋液(JIS K2246 伊勢久社製)を付着させ積層体に表面に疑似指紋を転写した。次に、プロワイプ(商品名:ソフトスーパーワイパーS132 大王製紙社製)を用いて98KPaの圧力で6往復擦ることにより人口指紋液を拭き取った後、蛍光灯下で積層体に汚れが残っているかを目視で観察した。評価は以下の基準で行った。
走査電子顕微鏡(日本電子社製、「JSM‐7400F」)を用いて、加速電圧3.00kVの条件で、スタンパおよび積層体の表面に形成された微細凹凸構造を観察した。なお、積層体の観察に関しては、プラチナを10分間蒸着した後に観察を行った。得られた画像から、隣り合う凸部同士の距離と凸部の高さを測定した。それぞれ10点ずつ測定し、平均値を求めた。
電解研磨されたアルミニウム円盤(純度99.99質量%、厚さ2mm、φ65mm)をアルミニウム基材として用いた。15℃に調整した0.3Mシュウ酸水溶液にアルミニウム基材を浸漬させて、直流安定化装置の電源のON/OFFを繰り返すことでアルミニウム基材に間欠的に電流を流すことにより、アルミニウム基材を陽極酸化させた。次に、30秒おきに80Vの定電圧を5秒間印加する操作を60回繰り返し、細孔を有する酸化皮膜を形成した。続いて、酸化皮膜を形成したアルミニウム基材を6質量%のリン酸と1.8質量%のクロム酸を混合した70℃の水溶液中に6時間浸漬させて、酸化皮膜を溶解除去した。酸化皮膜を溶解除去したアルミニウム基材を16℃に調整した0.05Mのシュウ酸水溶液に浸漬させて80Vで7秒間陽極酸化を施した。続いて、アルミニウム基材を32℃に調整した5質量%リン酸水溶液中に20分間浸漬させて、酸化皮膜の細孔を拡大する孔径拡大処理を施した。このように陽極酸化処理と孔径拡大処理を交互に繰り返した。陽極酸化処理と孔径拡大処理はそれぞれ5回ずつ行った。得られたスタンパをTDP-8(日光ケミカルズ社製)の0.1質量%水溶液に10分間浸漬させた後、引き上げて一晩乾燥させることにより、離型処理を施した。
<積層体の製造>
以下の材料を混合して活性エネルギー線硬化性樹脂組成物を調製した。
・エチレンオキサイド変性ジペンタエリスリトールヘキサアクリレート(「カヤラッドDPEA-12」、1分子内のエチレンオキサイド構造単位数n=12、日本化薬社製)30質量部、
・アロニックスM-260(商品名、東亜合成社製、ポリエチレングリコール鎖の平均繰り返し単位は13)70質量部、
・イルガキュア184(商品名、チバ・スペシャリティーケミカルズ社製)1質量部
・イルガキュア819(商品名、チバ・スペシャリティーケミカルズ社製)0.5部
・TDP-2(商品名、日光ケミカルズ社製)0.1質量部
該活性エネルギー線硬化性樹脂組成物をスタンパ上に数滴垂らし、トリアセチルセルロースフィルム(FTTD80ULM(商品名)、富士フィルム社製)で押し広げながら被覆した。続いて、フィルム側から1000mJ/cm2のエネルギーで紫外線を照射して活性エネルギー線硬化性樹脂組成物を光硬化させた。その後、フィルムとスタンパを剥離し、得られた微細凹凸構造を有する表層にプライマーとしてPC-3B(商品名、フロロテクノロジー社製)を微細凹凸構造表面にベンコットM-3II(旭化成せんい社製)でハケ塗りし、常温で90分乾燥した後、FG5070S135-0.1(商品名、フロロテクノロジー社製)をベンコットでハケ塗りし、60℃で3時間乾燥した。続いて、フィルム側から積算光照射量1000mJ/cm2のエネルギーで紫外線を照射して活性エネルギー線硬化性樹脂組成物を光硬化させ、表面処理層を形成した。その後、フィルムとスタンパを剥離して、図3に示すような、隣り合う凸部同士の距離w1が180nm、凸部の高さd1が180nmの微細凹凸構造を有する積層体を得た。
得られた積層体に関する水接触角、弾性率、防汚性の各評価を行った。結果を表4に示す。
BYK-3570:シリコーンアクリレート プロピレンオキサイド変性ネオペンチルグリコールジアクリレート希釈品(ビッグケミー・ジャパン社製)
TAS:トリメチロールエタン/アクリル酸/無水コハク酸を2/4/1で縮合反応させた混合物(大阪有機化学工業社製)
M-260:ポリエチレングリコールジアクリレート(「アロニックスM-260」、東亜合成社製、ポリエチレングリコール鎖の平均繰り返し単位は13)
X-22-1602:シリコーンアクリレート(信越化学工業社製)
C6DA:1,6-ヘキサンジオールジアクリレート(大阪有機化学工業社製)
IRG.184:ヒドロキシシクロヘキシルフェニルケトン(「イルガキュア184」、チバ・スペシャリティーケミカルズ社製)
IRG.819:フェニルビス(2,4,6-トリメチルベンゾイル)-ホスフィンオキシド(「イルガキュア819」、チバ・スペシャリティーケミカルズ社製)
TDP-2:ポリオキシエチレンアルキルエーテルリン酸(商品名、日光ケミカルズ株式会社製)
PC-3B:プライマー(商品名、フロロテクノロジー社製)
FG5070S135:フッ素コーティング剤(商品名、フロロテクノロジー社製)
なお、表5において、実施例1~2及び比較例1~2はそれぞれ実施例D1~D2及び比較例D1~D2を示す。
表5に示す組成に変更した以外は実施例D1と同様にして積層体を得た。結果を表5に示す。
表5に示す組成に変更した以外は実施例D1と同様にして積層体を得た。結果を表5に示す。
以下、本実施形態を実施例Eにより具体的に説明するが、本発明はこれらに限定されるものではない。
(水接触角の判定)
自動接触角測定装置(KRUSS社製)を用いて、後述する実施例Eおよび比較例Eにおいて作製した活性エネルギー線硬化性組成物の硬化物(活性エネルギー線硬化樹脂)の表面に1μlの水を滴下し、滴下してから7秒後の水滴の接触角をθ/2法にて算出した。
積層体の表層の照射面を、「FISCHERSCOPE(R) HM2000」(商品名、フィッシャー社製)を用いて、100mN/10秒の条件で荷重を増加させながら荷重を加え、100mNで60秒間保持した後、100mN/10秒の条件で荷重を減少させながら除荷する。その際の65%と95%の荷重がかかった点を用いて、外挿法により弾性率を計算した。なお、厚み500μmのテフロンシートをスペーサーとして用い、活性エネルギー線硬化性組成物を2枚のガラス板で挟み込み、積算光照射量3000mJ/cm2のエネルギーで紫外線を照射して活性エネルギー線硬化性組成物を光硬化させ、厚み500μmの活性エネルギー線硬化樹脂を作製し、該硬化樹脂の照射面について前記同様に測定することで、弾性率を計算することもできる。
特開2006-147149号公報に記載の方法に従って防汚性試験を行った。まず、擬似指紋成分について、マグネティックスターラーでよく攪拌しながら約1mL採取し、ポリカーボネート製基板(直径120mm、厚さ1.2mm)上にスピンコート法により塗布した。この基板を60℃で3分間加熱することにより、不要な希釈剤であるメトキシプロパノールを完全に除去した。これを擬似指紋転写用の原版とした。
LED光をフィルム端面側(側面側)から入射し、入射方向から観測した際に、白い斑が見えるかを目視で観察した。評価は以下の基準で行った。
走査電子顕微鏡(日本電子社製、「JSM‐7400F」)を用いて、加速電圧3.00kVの条件で、スタンパおよび積層体の表面に形成された微細凹凸構造を観察した。なお、積層体の観察に関しては、プラチナを10分間蒸着した後に観察を行った。得られた画像から、隣り合う凸部同士の距離と凸部の高さを測定した。それぞれ10点ずつ測定し、平均値を求めた。
電解研磨されたアルミニウム円盤(純度99.99質量%、厚さ2mm、φ65mm)をアルミニウム基材として用いた。15℃に調整した0.3Mシュウ酸水溶液にアルミニウム基材を浸漬させて、直流安定化装置の電源のON/OFFを繰り返すことでアルミニウム基材に間欠的に電流を流すことにより、アルミニウム基材を陽極酸化させた。次に、30秒おきに80Vの定電圧を5秒間印加する操作を60回繰り返し、細孔を有する酸化皮膜を形成した。続いて、酸化皮膜を形成したアルミニウム基材を6質量%のリン酸と1.8質量%のクロム酸を混合した70℃の水溶液中に6時間浸漬させて、酸化皮膜を溶解除去した。酸化皮膜を溶解除去したアルミニウム基材を16℃に調整した0.05Mのシュウ酸水溶液に浸漬させて80Vで5秒間陽極酸化を施した。続いて、アルミニウム基材を32℃に調整した5質量%リン酸水溶液中に20分間浸漬させて、酸化皮膜の細孔を拡大する孔径拡大処理を施した。このように陽極酸化処理と孔径拡大処理を交互に繰り返した。陽極酸化処理と孔径拡大処理はそれぞれ5回ずつ行った。得られたスタンパをTDP-8(日光ケミカルズ株式会社製)の0.1質量%水溶液に10分間浸漬させた後、引き上げて一晩乾燥させることにより、離型処理を施した。
<積層体の製造>
以下の材料を混合して活性エネルギー線硬化性組成物を調製した。
・エチレンオキサイド変性ジペンタエリスリトールヘキサアクリレート(「カヤラッドDPEA-12」、1分子内のエチレンオキサイド構造単位数n=12、日本化薬社製)22質量部
・アロニックスM-260(商品名、東亜合成社製、ポリエチレングリコール鎖の平均繰り返し単位は13)32質量部
・APG-700(商品名、新中村化学社製、ポリプロピレングリコール鎖の平均繰り返し単位は12)32質量部
・BYK-3570(商品名、ビッグケミー・ジャパン社製、シリコーンアクリレート プロピレンオキサイド変性ネオペンチルグリコールジアクリレート希釈品)9質量部
・カレンズMT PE1(商品名、昭和電工社製、SH基を4つ有する化合物)5質量部
・イルガキュア184(商品名、チバ・スペシャリティーケミカルズ社製)1質量部
・イルガキュア819(商品名、チバ・スペシャリティーケミカルズ社製)0.5部
・TDP-2(商品名、日光ケミカルズ株式会社製)0.1質量部
該活性エネルギー線硬化性組成物をスタンパ上に数滴垂らし、トリアセチルセルロースフィルム(FTTD80ULM(商品名)、富士フィルム社製)で押し広げながら被覆した。続いて、フィルム側から積算光照射量1000mJ/cm2のエネルギーで紫外線を照射して活性エネルギー線硬化性組成物を光硬化させた。図1に示すような、隣り合う凸部同士の距離w1が180nm、凸部の高さd1が150nmの微細凹凸構造を有する積層体を得た。
得られた積層体に関する水接触角、弾性率、防汚性、突起合一の各評価を行った。得られた積層体は弾性率が60MPaと十分に低く、水接触角も130°以上であるため、乾拭きで十分に汚れを除去することができ、突起合一も無く防汚性に優れたものであった。結果を表7に示す。
DPHA:ジペンタエリスリトールヘキサアクリレート(第一工業製薬社製)
DPEA-12:エチレンオキサイド変性ジペンタエリスリトールヘキサアクリレート(日本化薬社製、「カヤラッドDPEA-12」、1分子内のエチレンオキサイド構造単位数n=12)
DPHA-30EO:エチレンオキサイド変性ジペンタエリスリトールヘキサアクリレート(第一工業製薬社製、1分子内のエチレンオキサイド構造単位数n=30)
M-260:ポリエチレングリコールジアクリレート(「アロニックスM-260」、東亜合成社製、ポリエチレングリコール鎖の平均繰り返し単位は13)
APG-700(商品名、新中村化学社製、ポリプロピレングリコール鎖の平均繰り返し単位は12)
C6DA:1,6-ヘキサンジオールジアクリレート(大阪有機化学工業社製)
BYK-3570:シリコーンアクリレート プロピレンオキサイド変性ネオペンチルグリコールジアクリレート希釈品(ビッグケミー・ジャパン社製)
X-22-1602:シリコーンアクリレート(信越化学工業社製)
PE1:カレンズMT PE1(商品名、昭和電工社製、SH基を4つ有する化合物)
NR1:カレンズMT NR1(商品名、昭和電工社製、SH基を3つ有する化合物)
BD1:カレンズMT BD1(商品名、昭和電工社製、SH基を2つ有する化合物)
nOM:n-オクチルメルカプタン(エルファトムケムジャパン社製、SH基を1つ有する化合物)
IRG184:ヒドロキシシクロヘキシルフェニルケトン(「イルガキュア184」、チバ・スペシャリティーケミカルズ社製)
IRG819:フェニルビス(2,4,6-トリメチルベンゾイル)-ホスフィンオキシド(「イルガキュア819」、チバ・スペシャリティーケミカルズ社製)
TDP-2:ポリオキシエチレンアルキルエーテルリン酸(商品名、日光ケミカルズ株式会社製)
なお、表6及び7において、実施例1~13及び比較例1はそれぞれ実施例E1~E13及び比較例E1を示す。
表6に示す組成に変更した以外は実施例E1と同様にして積層体を得た。結果を表7に示す。
11:基材
12:表層
13:凸部
14:凹部
Claims (20)
- 微細凹凸構造が形成された表面を有する表層を備える積層体であって、
前記表層の弾性率が250MPa未満であり、且つ前記表層の摩擦係数の傾きが1.8×10-3以下である、積層体。 - 前記表層の摩擦係数の傾きが-2.0×10-3以上である、請求項1に記載の積層体。
- 前記表層の摩擦係数の傾きが-1.8×10-3以上1.0×10-3以下である、請求項1又は2に記載の積層体。
- 前記表層の弾性率が160MPa未満である、請求項1~3のいずれかに記載の積層体。
- 前記表層の弾性率が100MPa未満である、請求項1~4のいずれかに記載の積層体。
- 前記表層の水接触角が25°以下、または130°以上である、請求項1~5のいずれかに記載の積層体。
- 前記表層が活性エネルギー線硬化性樹脂組成物の硬化物からなる層を含む請求項1~6のいずれかに記載の積層体。
- 前記活性エネルギー線硬化性樹脂組成物が、3官能以上の多官能(メタ)アクリレート(A)1~55質量部、2官能の(メタ)アクリレート(B)10~95質量部を含む(但し、前記活性エネルギー線硬化性樹脂組成物中の重合性成分の合計を100質量部とする)、請求項7に記載の積層体。
- 前記3官能以上の多官能(メタ)アクリレート(A)の含有量が5~40質量部であり、前記2官能の(メタ)アクリレート(B)の含有量が20~80質量部である請求項8に記載の積層体。
- 前記3官能以上の多官能(メタ)アクリレート(A)の含有量が10~30質量部であり、前記2官能の(メタ)アクリレート(B)の含有量が30~70質量部である請求項8に記載の積層体。
- 前記活性エネルギー線硬化性樹脂組成物が、さらにシリコーン(メタ)アクリレート(C)3~85質量部を含む(但し、前記活性エネルギー線硬化性樹脂組成物中の重合性成分の合計を100質量部とし、(A)及び(B)はそれぞれ(C)を除く)、請求項8に記載の積層体。
- 前記活性エネルギー線硬化性樹脂組成物が、さらにシリコーン(メタ)アクリレート(C)7~70質量部を含む(但し、前記活性エネルギー線硬化性樹脂組成物中の重合性成分の合計を100質量部とし、(A)及び(B)はそれぞれ(C)を除く)、請求項9に記載の積層体。
- 前記活性エネルギー線硬化性樹脂組成物が、SH基を有する化合物(D)を含む請求項7に記載の積層体。
- 前記活性エネルギー線硬化性樹脂組成物は、2官能以上の多官能(メタ)アクリレート(E)を0~95質量部、シリコーン(メタ)アクリレート(C)を0~75質量部、前記SH基を有する化合物(D)を1~60質量部含む(但し、重合性成分の合計を100質量部とする。)、請求項13に記載の積層体。
- 前記表層は、前記活性エネルギー線硬化性樹脂組成物の硬化物からなる層から構成される請求項7~14のいずれかに記載の積層体。
- 前記表層が、前記活性エネルギー線硬化性樹脂組成物の硬化物からなる層と、該活性エネルギー線硬化性樹脂組成物の硬化物からなる層の上に形成された、最表面層としての表面処理層とから構成される、請求項7~14のいずれかに記載の積層体。
- 前記微細凹凸構造のピッチが100nm以上250nm以下である、請求項1~15のいずれかに記載の積層体。
- 請求項1~17のいずれかに記載の積層体を備えた反射防止物品。
- 請求項1~17のいずれかに記載の積層体を備えた画像表示装置。
- 請求項1~17のいずれかに記載の積層体を備えたタッチパネル。
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WO2017164046A1 (ja) * | 2016-03-23 | 2017-09-28 | シャープ株式会社 | 光学フィルムの製造方法、及び、金型 |
WO2018079525A1 (ja) * | 2016-10-25 | 2018-05-03 | ダイキン工業株式会社 | 機能性膜 |
JPWO2017110472A1 (ja) * | 2015-12-22 | 2018-10-11 | 日油株式会社 | 剥離シート用硬化性樹脂組成物、剥離シート、これを用いた工程基材、及び基材を保護する方法 |
KR102060872B1 (ko) | 2015-04-30 | 2019-12-30 | 샤프 가부시키가이샤 | 광학 필름의 제조 방법 및 광학 필름 |
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Also Published As
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BR112014031311A2 (pt) | 2017-06-27 |
EP2862706A1 (en) | 2015-04-22 |
KR20150023757A (ko) | 2015-03-05 |
EP2862706A4 (en) | 2015-07-01 |
TW201405159A (zh) | 2014-02-01 |
JPWO2013187506A1 (ja) | 2016-02-08 |
JP5725184B2 (ja) | 2015-05-27 |
KR101755955B1 (ko) | 2017-07-07 |
US20150125659A1 (en) | 2015-05-07 |
TWI500954B (zh) | 2015-09-21 |
CN104349892B (zh) | 2017-06-09 |
CN104349892A (zh) | 2015-02-11 |
EP2862706B1 (en) | 2020-12-23 |
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