JP4971826B2 - Surface protective adhesive film - Google Patents
Surface protective adhesive film Download PDFInfo
- Publication number
- JP4971826B2 JP4971826B2 JP2007043670A JP2007043670A JP4971826B2 JP 4971826 B2 JP4971826 B2 JP 4971826B2 JP 2007043670 A JP2007043670 A JP 2007043670A JP 2007043670 A JP2007043670 A JP 2007043670A JP 4971826 B2 JP4971826 B2 JP 4971826B2
- Authority
- JP
- Japan
- Prior art keywords
- sensitive adhesive
- pressure
- film
- layer
- adhesive film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
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- 230000001681 protective effect Effects 0.000 title claims description 31
- 239000002313 adhesive film Substances 0.000 title claims description 27
- 239000010410 layer Substances 0.000 claims description 75
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 56
- 239000002216 antistatic agent Substances 0.000 claims description 54
- 229920000058 polyacrylate Polymers 0.000 claims description 30
- 230000003373 anti-fouling effect Effects 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 20
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 16
- 239000003431 cross linking reagent Substances 0.000 claims description 14
- 125000004432 carbon atom Chemical group C* 0.000 claims description 13
- 229920006267 polyester film Polymers 0.000 claims description 13
- 239000000178 monomer Substances 0.000 claims description 12
- 125000000217 alkyl group Chemical group 0.000 claims description 11
- 150000001768 cations Chemical group 0.000 claims description 11
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 9
- 239000012948 isocyanate Substances 0.000 claims description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 7
- 150000002513 isocyanates Chemical class 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 5
- 238000007334 copolymerization reaction Methods 0.000 claims description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 5
- 125000002252 acyl group Chemical group 0.000 claims description 3
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 1
- -1 polyethylene terephthalate Polymers 0.000 description 77
- 239000010408 film Substances 0.000 description 48
- 238000000576 coating method Methods 0.000 description 34
- 239000011248 coating agent Substances 0.000 description 32
- ZXMGHDIOOHOAAE-UHFFFAOYSA-N 1,1,1-trifluoro-n-(trifluoromethylsulfonyl)methanesulfonamide Chemical compound FC(F)(F)S(=O)(=O)NS(=O)(=O)C(F)(F)F ZXMGHDIOOHOAAE-UHFFFAOYSA-N 0.000 description 28
- 238000000034 method Methods 0.000 description 24
- 239000012788 optical film Substances 0.000 description 16
- 125000002091 cationic group Chemical group 0.000 description 13
- 230000001070 adhesive effect Effects 0.000 description 12
- 239000012790 adhesive layer Substances 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 10
- 239000002519 antifouling agent Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 238000011156 evaluation Methods 0.000 description 10
- 150000003949 imides Chemical class 0.000 description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 8
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 8
- 150000002430 hydrocarbons Chemical group 0.000 description 8
- 239000010419 fine particle Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical group CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 6
- 229920001940 conductive polymer Polymers 0.000 description 6
- 125000005842 heteroatom Chemical group 0.000 description 6
- 229920000123 polythiophene Polymers 0.000 description 6
- 239000004925 Acrylic resin Substances 0.000 description 5
- 229920000178 Acrylic resin Polymers 0.000 description 5
- 229920000877 Melamine resin Polymers 0.000 description 5
- 125000000129 anionic group Chemical group 0.000 description 5
- YIOJGTBNHQAVBO-UHFFFAOYSA-N dimethyl-bis(prop-2-enyl)azanium Chemical compound C=CC[N+](C)(C)CC=C YIOJGTBNHQAVBO-UHFFFAOYSA-N 0.000 description 5
- 238000007689 inspection Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
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- 239000004640 Melamine resin Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 150000001875 compounds Chemical group 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 229910052698 phosphorus Chemical class 0.000 description 4
- 239000011574 phosphorus Chemical class 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 229920001187 thermosetting polymer Polymers 0.000 description 4
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical class [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 229920002873 Polyethylenimine Polymers 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 125000005250 alkyl acrylate group Chemical group 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 125000003700 epoxy group Chemical group 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 238000007756 gravure coating Methods 0.000 description 3
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- IQQRAVYLUAZUGX-UHFFFAOYSA-N 1-butyl-3-methylimidazolium Chemical compound CCCCN1C=C[N+](C)=C1 IQQRAVYLUAZUGX-UHFFFAOYSA-N 0.000 description 2
- QWDQYHPOSSHSAW-UHFFFAOYSA-N 1-isocyanatooctadecane Chemical compound CCCCCCCCCCCCCCCCCCN=C=O QWDQYHPOSSHSAW-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical class N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical class OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 2
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical group C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000007754 air knife coating Methods 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- LRESCJAINPKJTO-UHFFFAOYSA-N bis(trifluoromethylsulfonyl)azanide;1-ethyl-3-methylimidazol-3-ium Chemical compound CCN1C=C[N+](C)=C1.FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F LRESCJAINPKJTO-UHFFFAOYSA-N 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- BXHHZLMBMOBPEH-UHFFFAOYSA-N diethyl-(2-methoxyethyl)-methylazanium Chemical compound CC[N+](C)(CC)CCOC BXHHZLMBMOBPEH-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 125000001033 ether group Chemical group 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 229920005990 polystyrene resin Polymers 0.000 description 2
- 229940005642 polystyrene sulfonic acid Drugs 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 125000001302 tertiary amino group Chemical group 0.000 description 2
- 229920006230 thermoplastic polyester resin Polymers 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 2
- 239000013638 trimer Substances 0.000 description 2
- PUVAFTRIIUSGLK-UHFFFAOYSA-M trimethyl(oxiran-2-ylmethyl)azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CC1CO1 PUVAFTRIIUSGLK-UHFFFAOYSA-M 0.000 description 2
- JGTNAGYHADQMCM-UHFFFAOYSA-M 1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate Chemical compound [O-]S(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F JGTNAGYHADQMCM-UHFFFAOYSA-M 0.000 description 1
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 1
- OVBFMUAFNIIQAL-UHFFFAOYSA-N 1,4-diisocyanatobutane Chemical compound O=C=NCCCCN=C=O OVBFMUAFNIIQAL-UHFFFAOYSA-N 0.000 description 1
- QPDGLRRWSBZCHP-UHFFFAOYSA-M 1-butyl-3-methylimidazol-3-ium;2,2,2-trifluoroacetate Chemical compound [O-]C(=O)C(F)(F)F.CCCC[N+]=1C=CN(C)C=1 QPDGLRRWSBZCHP-UHFFFAOYSA-M 0.000 description 1
- MDJAMFZRTDMREK-UHFFFAOYSA-M 1-butyl-3-methylimidazol-3-ium;2,2,3,3,4,4,4-heptafluorobutanoate Chemical compound CCCC[N+]=1C=CN(C)C=1.[O-]C(=O)C(F)(F)C(F)(F)C(F)(F)F MDJAMFZRTDMREK-UHFFFAOYSA-M 0.000 description 1
- FRZPYEHDSAQGAS-UHFFFAOYSA-M 1-butyl-3-methylimidazol-3-ium;trifluoromethanesulfonate Chemical compound [O-]S(=O)(=O)C(F)(F)F.CCCC[N+]=1C=CN(C)C=1 FRZPYEHDSAQGAS-UHFFFAOYSA-M 0.000 description 1
- DADKKHHMGSWSPH-UHFFFAOYSA-N 1-butyl-3-methylpyridin-1-ium Chemical compound CCCC[N+]1=CC=CC(C)=C1 DADKKHHMGSWSPH-UHFFFAOYSA-N 0.000 description 1
- VWRPMASNDUMPEH-UHFFFAOYSA-N 1-butyl-3-methylpyridin-1-ium;2,2,2-trifluoro-n-(trifluoromethylsulfonyl)acetamide Chemical compound CCCC[N+]1=CC=CC(C)=C1.FC(F)(F)C(=O)NS(=O)(=O)C(F)(F)F VWRPMASNDUMPEH-UHFFFAOYSA-N 0.000 description 1
- SZBRISJDXSIRRE-UHFFFAOYSA-M 1-butyl-3-methylpyridin-1-ium;trifluoromethanesulfonate Chemical compound [O-]S(=O)(=O)C(F)(F)F.CCCC[N+]1=CC=CC(C)=C1 SZBRISJDXSIRRE-UHFFFAOYSA-M 0.000 description 1
- MPBIAPOZWUJSMA-UHFFFAOYSA-N 1-butylpyridin-1-ium;2,2,2-trifluoro-n-(trifluoromethylsulfonyl)acetamide Chemical compound CCCC[N+]1=CC=CC=C1.FC(F)(F)C(=O)NS(=O)(=O)C(F)(F)F MPBIAPOZWUJSMA-UHFFFAOYSA-N 0.000 description 1
- XHBAYEHFQOIRLI-UHFFFAOYSA-N 1-ethyl-3-methylimidazol-3-ium;2,2,2-trifluoro-n-(trifluoromethylsulfonyl)acetamide Chemical compound CC[N+]=1C=CN(C)C=1.FC(F)(F)C(=O)NS(=O)(=O)C(F)(F)F XHBAYEHFQOIRLI-UHFFFAOYSA-N 0.000 description 1
- JOKVYNJKBRLDAT-UHFFFAOYSA-M 1-ethyl-3-methylimidazol-3-ium;2,2,2-trifluoroacetate Chemical compound [O-]C(=O)C(F)(F)F.CC[N+]=1C=CN(C)C=1 JOKVYNJKBRLDAT-UHFFFAOYSA-M 0.000 description 1
- YKHTWJWRBYUTAO-UHFFFAOYSA-M 1-ethyl-3-methylimidazol-3-ium;2,2,3,3,4,4,4-heptafluorobutanoate Chemical compound CCN1C=C[N+](C)=C1.[O-]C(=O)C(F)(F)C(F)(F)C(F)(F)F YKHTWJWRBYUTAO-UHFFFAOYSA-M 0.000 description 1
- XIYUIMLQTKODPS-UHFFFAOYSA-M 1-ethyl-3-methylimidazol-3-ium;acetate Chemical compound CC([O-])=O.CC[N+]=1C=CN(C)C=1 XIYUIMLQTKODPS-UHFFFAOYSA-M 0.000 description 1
- ZPTRYWVRCNOTAS-UHFFFAOYSA-M 1-ethyl-3-methylimidazol-3-ium;trifluoromethanesulfonate Chemical compound CC[N+]=1C=CN(C)C=1.[O-]S(=O)(=O)C(F)(F)F ZPTRYWVRCNOTAS-UHFFFAOYSA-M 0.000 description 1
- NJMWOUFKYKNWDW-UHFFFAOYSA-N 1-ethyl-3-methylimidazolium Chemical compound CCN1C=C[N+](C)=C1 NJMWOUFKYKNWDW-UHFFFAOYSA-N 0.000 description 1
- SWWLEHMBKPSRSI-UHFFFAOYSA-N 1-hexyl-2,3-dimethylimidazol-3-ium Chemical compound CCCCCCN1C=C[N+](C)=C1C SWWLEHMBKPSRSI-UHFFFAOYSA-N 0.000 description 1
- BGSUDDILQRFOKZ-UHFFFAOYSA-M 1-hexyl-3-methylimidazol-3-ium;bromide Chemical compound [Br-].CCCCCCN1C=C[N+](C)=C1 BGSUDDILQRFOKZ-UHFFFAOYSA-M 0.000 description 1
- RABFGPMWVQNDHI-UHFFFAOYSA-M 1-hexyl-3-methylimidazol-3-ium;trifluoromethanesulfonate Chemical compound [O-]S(=O)(=O)C(F)(F)F.CCCCCC[N+]=1C=CN(C)C=1 RABFGPMWVQNDHI-UHFFFAOYSA-M 0.000 description 1
- NKRASMXHSQKLHA-UHFFFAOYSA-M 1-hexyl-3-methylimidazolium chloride Chemical compound [Cl-].CCCCCCN1C=C[N+](C)=C1 NKRASMXHSQKLHA-UHFFFAOYSA-M 0.000 description 1
- MUKBEWXPHOHEBS-UHFFFAOYSA-N 2,2,2-trifluoro-N-(trifluoromethylsulfonyl)acetamide trimethyl(oxiran-2-ylmethyl)azanium Chemical compound C[N+](C)(C)CC1CO1.FC(F)(F)C(=O)NS(=O)(=O)C(F)(F)F MUKBEWXPHOHEBS-UHFFFAOYSA-N 0.000 description 1
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- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 1
- AGBXYHCHUYARJY-UHFFFAOYSA-N 2-phenylethenesulfonic acid Chemical compound OS(=O)(=O)C=CC1=CC=CC=C1 AGBXYHCHUYARJY-UHFFFAOYSA-N 0.000 description 1
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- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- GZVHEAJQGPRDLQ-UHFFFAOYSA-N 6-phenyl-1,3,5-triazine-2,4-diamine Chemical compound NC1=NC(N)=NC(C=2C=CC=CC=2)=N1 GZVHEAJQGPRDLQ-UHFFFAOYSA-N 0.000 description 1
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- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
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- 150000001336 alkenes Chemical class 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 230000002152 alkylating effect Effects 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 150000001414 amino alcohols Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- DQPBABKTKYNPMH-UHFFFAOYSA-M amino sulfate Chemical class NOS([O-])(=O)=O DQPBABKTKYNPMH-UHFFFAOYSA-M 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- XOZHIVUWCICHSQ-UHFFFAOYSA-N bis(trifluoromethylsulfonyl)azanide;1,2-dimethyl-3-propylimidazol-1-ium Chemical compound CCCN1C=C[N+](C)=C1C.FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F XOZHIVUWCICHSQ-UHFFFAOYSA-N 0.000 description 1
- INDFXCHYORWHLQ-UHFFFAOYSA-N bis(trifluoromethylsulfonyl)azanide;1-butyl-3-methylimidazol-3-ium Chemical compound CCCCN1C=C[N+](C)=C1.FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F INDFXCHYORWHLQ-UHFFFAOYSA-N 0.000 description 1
- NOFBAVDIGCEKOQ-UHFFFAOYSA-N bis(trifluoromethylsulfonyl)azanide;1-butyl-3-methylpyridin-1-ium Chemical compound CCCC[N+]1=CC=CC(C)=C1.FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F NOFBAVDIGCEKOQ-UHFFFAOYSA-N 0.000 description 1
- ALYCOCULEAWWJO-UHFFFAOYSA-N bis(trifluoromethylsulfonyl)azanide;triethyl(pentyl)azanium Chemical compound CCCCC[N+](CC)(CC)CC.FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F ALYCOCULEAWWJO-UHFFFAOYSA-N 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- IKWKJIWDLVYZIY-UHFFFAOYSA-M butyl(triphenyl)phosphanium;bromide Chemical compound [Br-].C=1C=CC=CC=1[P+](C=1C=CC=CC=1)(CCCC)C1=CC=CC=C1 IKWKJIWDLVYZIY-UHFFFAOYSA-M 0.000 description 1
- AILPSZWICOHGMA-UHFFFAOYSA-N butyl-dimethyl-propylazanium Chemical compound CCCC[N+](C)(C)CCC AILPSZWICOHGMA-UHFFFAOYSA-N 0.000 description 1
- VJBODIYZSOOKES-UHFFFAOYSA-N butyl-ethyl-dimethylazanium Chemical compound CCCC[N+](C)(C)CC VJBODIYZSOOKES-UHFFFAOYSA-N 0.000 description 1
- MKLCNZGZWCQCIY-UHFFFAOYSA-N butyl-heptyl-dimethylazanium Chemical compound CCCCCCC[N+](C)(C)CCCC MKLCNZGZWCQCIY-UHFFFAOYSA-N 0.000 description 1
- GUZLSXNNIAYDHJ-UHFFFAOYSA-N butyl-hexyl-dimethylazanium Chemical compound CCCCCC[N+](C)(C)CCCC GUZLSXNNIAYDHJ-UHFFFAOYSA-N 0.000 description 1
- HEZLPXHJHDDYOE-UHFFFAOYSA-N butyl-hexyl-dipropylazanium Chemical compound CCCCCC[N+](CCC)(CCC)CCCC HEZLPXHJHDDYOE-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- MKHFCTXNDRMIDR-UHFFFAOYSA-N cyanoiminomethylideneazanide;1-ethyl-3-methylimidazol-3-ium Chemical compound [N-]=C=NC#N.CCN1C=C[N+](C)=C1 MKHFCTXNDRMIDR-UHFFFAOYSA-N 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 125000005131 dialkylammonium group Chemical group 0.000 description 1
- USXXKLJKCGLODH-UHFFFAOYSA-N dibutyl-hexyl-methylazanium Chemical compound CCCCCC[N+](C)(CCCC)CCCC USXXKLJKCGLODH-UHFFFAOYSA-N 0.000 description 1
- CJMALQPKCBISHD-UHFFFAOYSA-N dibutyl-methyl-pentylazanium Chemical compound CCCCC[N+](C)(CCCC)CCCC CJMALQPKCBISHD-UHFFFAOYSA-N 0.000 description 1
- 238000007607 die coating method Methods 0.000 description 1
- QAZLNBLXZLXTJC-UHFFFAOYSA-M diethyl-(2-methoxyethyl)-methylazanium;trifluoromethanesulfonate Chemical compound [O-]S(=O)(=O)C(F)(F)F.CC[N+](C)(CC)CCOC QAZLNBLXZLXTJC-UHFFFAOYSA-M 0.000 description 1
- PIODCVYLDQEZFW-UHFFFAOYSA-N diethyl-heptyl-methylazanium Chemical compound CCCCCCC[N+](C)(CC)CC PIODCVYLDQEZFW-UHFFFAOYSA-N 0.000 description 1
- OBRWMJNKKIMAPZ-UHFFFAOYSA-N diethyl-methyl-pentylazanium Chemical compound CCCCC[N+](C)(CC)CC OBRWMJNKKIMAPZ-UHFFFAOYSA-N 0.000 description 1
- KSRKBDUROZKZBR-UHFFFAOYSA-N diethyl-methyl-propylazanium Chemical compound CCC[N+](C)(CC)CC KSRKBDUROZKZBR-UHFFFAOYSA-N 0.000 description 1
- IAYWJKSKVFOMDT-UHFFFAOYSA-N diethyl-pentyl-propylazanium Chemical compound CCCCC[N+](CC)(CC)CCC IAYWJKSKVFOMDT-UHFFFAOYSA-N 0.000 description 1
- BVYKZCWFDFGEDY-UHFFFAOYSA-N dihexyl(dimethyl)azanium Chemical compound CCCCCC[N+](C)(C)CCCCCC BVYKZCWFDFGEDY-UHFFFAOYSA-N 0.000 description 1
- JCWIHQGUAVBVND-UHFFFAOYSA-N dihexyl(dipropyl)azanium Chemical compound CCCCCC[N+](CCC)(CCC)CCCCCC JCWIHQGUAVBVND-UHFFFAOYSA-N 0.000 description 1
- KIQKWYUGPPFMBV-UHFFFAOYSA-N diisocyanatomethane Chemical compound O=C=NCN=C=O KIQKWYUGPPFMBV-UHFFFAOYSA-N 0.000 description 1
- WQHRRUZRGXLCGL-UHFFFAOYSA-N dimethyl(dipropyl)azanium Chemical compound CCC[N+](C)(C)CCC WQHRRUZRGXLCGL-UHFFFAOYSA-N 0.000 description 1
- AEVGDMCWEJJJPC-UHFFFAOYSA-N dimethyl-pentyl-propylazanium Chemical compound CCCCC[N+](C)(C)CCC AEVGDMCWEJJJPC-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical group CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- DJCZADVNBUGGRS-UHFFFAOYSA-N ethyl-dimethyl-pentylazanium Chemical compound CCCCC[N+](C)(C)CC DJCZADVNBUGGRS-UHFFFAOYSA-N 0.000 description 1
- KUDSOEFZHRAMEU-UHFFFAOYSA-N ethyl-heptyl-dimethylazanium Chemical compound CCCCCCC[N+](C)(C)CC KUDSOEFZHRAMEU-UHFFFAOYSA-N 0.000 description 1
- BEURYHDWKDICEO-UHFFFAOYSA-N ethyl-hexyl-dimethylazanium Chemical compound CCCCCC[N+](C)(C)CC BEURYHDWKDICEO-UHFFFAOYSA-N 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 150000002314 glycerols Chemical class 0.000 description 1
- 229940015043 glyoxal Drugs 0.000 description 1
- PISCILXZPLTTFP-UHFFFAOYSA-N heptyl(trimethyl)azanium Chemical compound CCCCCCC[N+](C)(C)C PISCILXZPLTTFP-UHFFFAOYSA-N 0.000 description 1
- HRVTXKZFPPCSKD-UHFFFAOYSA-N heptyl-dimethyl-propylazanium Chemical compound CCCCCCC[N+](C)(C)CCC HRVTXKZFPPCSKD-UHFFFAOYSA-N 0.000 description 1
- KIVAZLJKZWJKRY-UHFFFAOYSA-N hexyl-dimethyl-pentylazanium Chemical compound CCCCCC[N+](C)(C)CCCCC KIVAZLJKZWJKRY-UHFFFAOYSA-N 0.000 description 1
- LZHJKZALMMLMRU-UHFFFAOYSA-N hexyl-dimethyl-propylazanium Chemical compound CCCCCC[N+](C)(C)CCC LZHJKZALMMLMRU-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- GVXHSMAJJFVLGD-UHFFFAOYSA-N methyl 5-chloro-7-(trifluoromethyl)thieno[3,2-b]pyridine-3-carboxylate Chemical compound C1=C(Cl)N=C2C(C(=O)OC)=CSC2=C1C(F)(F)F GVXHSMAJJFVLGD-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- HYYUVNFATOSGPP-UHFFFAOYSA-N methyl-pentyl-dipropylazanium Chemical compound CCCCC[N+](C)(CCC)CCC HYYUVNFATOSGPP-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- IULGYNXPKZHCIA-UHFFFAOYSA-N octadecyl carbamate Chemical compound CCCCCCCCCCCCCCCCCCOC(N)=O IULGYNXPKZHCIA-UHFFFAOYSA-N 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 229920000447 polyanionic polymer Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-O pyridinium Chemical compound C1=CC=[NH+]C=C1 JUJWROOIHBZHMG-UHFFFAOYSA-O 0.000 description 1
- 125000001422 pyrrolinyl group Chemical group 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical group 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Chemical class 0.000 description 1
- DTIFFPXSSXFQCJ-UHFFFAOYSA-N tetrahexylazanium Chemical compound CCCCCC[N+](CCCCCC)(CCCCCC)CCCCCC DTIFFPXSSXFQCJ-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- MEJYOZOPFBOWNM-UHFFFAOYSA-N triethyl(heptyl)azanium Chemical compound CCCCCCC[N+](CC)(CC)CC MEJYOZOPFBOWNM-UHFFFAOYSA-N 0.000 description 1
- WGYXSYLSCVXFDU-UHFFFAOYSA-N triethyl(propyl)azanium Chemical compound CCC[N+](CC)(CC)CC WGYXSYLSCVXFDU-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 1
- IQZRBOPLVCXUST-UHFFFAOYSA-M trifluoromethanesulfonate;trimethyl(oxiran-2-ylmethyl)azanium Chemical compound C[N+](C)(C)CC1CO1.[O-]S(=O)(=O)C(F)(F)F IQZRBOPLVCXUST-UHFFFAOYSA-M 0.000 description 1
- 125000001889 triflyl group Chemical group FC(F)(F)S(*)(=O)=O 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical group CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- LAGQNGWYNLUQRI-UHFFFAOYSA-N trioctylmethylammonium bis(trifluoromethylsulfonyl)imide Chemical compound FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F.CCCCCCCC[N+](C)(CCCCCCCC)CCCCCCCC LAGQNGWYNLUQRI-UHFFFAOYSA-N 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/18—Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B2207/00—Coding scheme for general features or characteristics of optical elements and systems of subclass G02B, but not including elements and systems which would be classified in G02B6/00 and subgroups
- G02B2207/121—Antistatic or EM shielding layer
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/50—Protective arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
- H01J2211/20—Constructional details
- H01J2211/34—Vessels, containers or parts thereof, e.g. substrates
- H01J2211/44—Optical arrangements or shielding arrangements, e.g. filters or lenses
- H01J2211/446—Electromagnetic shielding means; Antistatic means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
- Polarising Elements (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
本発明は、剥離帯電防止性に優れた表面保護用粘着フィルムに関するものである。さらに詳しくは、本発明は静電気が発生しやすいプラスチック素材を用いた偏光板の表面保護用として特に好適に用いることのできる表面保護用粘着フィルムに関するものである。 The present invention relates to an adhesive film for surface protection excellent in peeling antistatic properties. More specifically, the present invention relates to a pressure-sensitive adhesive film for surface protection that can be particularly suitably used for surface protection of a polarizing plate using a plastic material that is likely to generate static electricity.
液晶表示板に用いられる偏光板を初めとする等の光学機能を有する光学フィルムは、その表面を保護する目的で表面保護フィルムが貼り付けられる場合が多い。例えば液晶表示板の場合には、偏光板の表面に、液晶セルを組み立てるまでの間偏光板の表面を保護する目的で、表面保護用粘着フィルムが貼り付けられている。従来、かかる表面保護用粘着フィルムとしては、二軸延伸ポリエステルフィルム（ポリエチレンテレフタレートフィルム等）表面に、偏光板表面に剥離可能に貼り付けることができる軽剥離性の粘着剤層を設けられたものが用いられている。 In many cases, an optical film having an optical function such as a polarizing plate used for a liquid crystal display panel is attached with a surface protective film for the purpose of protecting the surface. For example, in the case of a liquid crystal display panel, a surface protecting adhesive film is attached to the surface of the polarizing plate for the purpose of protecting the surface of the polarizing plate until the liquid crystal cell is assembled. Conventionally, as such a surface protective pressure-sensitive adhesive film, a biaxially stretched polyester film (polyethylene terephthalate film or the like) is provided with a light-peelable pressure-sensitive adhesive layer that can be releasably attached to a polarizing plate surface. It is used.
また、偏光板等の光学機能を有する光学フィルムは、粘着剤層を介して表面保護フィルムが貼り付けられ、積層した状態で打ち抜きなどの加工が施される場合がある。その際、表面保護フィルムの背面側（粘着剤層を設けた反対側）に、使用されている粘着剤が付着する場合があるので、粘着剤等の除去を容易にするために背面側に防汚層を設けることが提案されてる。また表面保護フィルムには、静電気を防止するため、帯電防止層が表面保護フィルムの背面側または粘着剤層側に設けることが提案されている。 In addition, an optical film having an optical function such as a polarizing plate may have a surface protective film attached via an adhesive layer and may be subjected to processing such as punching in a laminated state. At that time, since the used adhesive may adhere to the back side of the surface protective film (opposite side where the adhesive layer is provided), the back side is protected to facilitate the removal of the adhesive and the like. It has been proposed to provide a dirty layer. Further, it has been proposed that the surface protection film is provided with an antistatic layer on the back side or the pressure-sensitive adhesive layer side of the surface protection film in order to prevent static electricity.
これらの表面保護フィルムは、実装後に表面保護の役目を終えて剥がすとき、剥離帯電を生じやすいという問題がある。従来、剥離面積が小さいために、剥離時に静電気が生じても、その帯電圧は問題を生じるほど大きくならず、得られる電子部品などの製品への影響は少なかった。しかしながら、近年ディスプレイの大型化などに起因して剥離面積も増大し、剥離時の帯電圧も高くなって電子部品などの製品が放電破壊するという問題を生じやすくなった。この問題は、上記の帯電防止層を表面保護フィルムのいずれか一方の面に帯電防止層を設けるか、または、帯電防止剤をフィルム中に添加することにより、ある程度の剥離帯電圧は抑制できるものの、その効果はいまだ不充分なものであった。 These surface protective films have a problem that they are likely to be peeled off when they are peeled off after the role of surface protection after mounting. Conventionally, since the peeling area is small, even if static electricity is generated at the time of peeling, the charged voltage is not so great as to cause a problem, and there is little influence on products such as electronic parts obtained. However, due to the recent increase in the size of displays and the like, the peeled area has increased, and the charged voltage at the time of peeling has increased, which has led to the problem that products such as electronic parts are broken by discharge. This problem is that although the antistatic layer is provided on one surface of the surface protective film or an antistatic agent is added to the film, a certain degree of peeling voltage can be suppressed. The effect was still inadequate.
本発明は、上記背景技術に鑑みなされたもので、その目的は、各種光学フィルム、特に大面積の光学機能を有する光学フィルムの表面保護用に用いた際の剥離帯電が少なく、例えば大型ディスプレイ用の各種光学フィルムの表面保護用として用いた際、優れた剥離帯電防止と汚れ防止効果を有する表面保護用粘着フィルムを提供することにある。 The present invention has been made in view of the above-described background art, and its purpose is to reduce peeling electrification when used for surface protection of various optical films, particularly optical films having a large area optical function, for example, for large displays. It is an object of the present invention to provide a surface-protective pressure-sensitive adhesive film having an excellent anti-peeling effect and anti-staining effect when used for surface protection of various optical films.
また、別の目的は、光学フィルム面に積層した場合、粘着層と光学フィルムとの間に気泡が入りがたく、また、保管中や搬送中に表面保護フィルムが光学フィルム面から剥離しがたく、さらには、積層された状態での各種製品の欠陥検査時に障害とならない表面保護用粘着フィルムを提供することにある。 Another object is that when laminated on the optical film surface, air bubbles do not easily enter between the adhesive layer and the optical film, and the surface protective film does not easily peel off from the optical film surface during storage or transportation. Furthermore, it is providing the adhesive film for surface protection which does not become an obstacle at the time of the defect inspection of the various products in the laminated | stacked state.
本発明者は、上記課題を達成するため鋭意検討した結果、少なくとも一方の面に帯電防止層を有するフィルムの一方の面に防汚層、他方の面に粘着剤層を設け、その際粘着剤として親水性基を有するアクリル系ポリマー中に帯電防止剤を配合したものを用いれば、優れた剥離帯電防止と汚れ防止効果とが同時に達成できることを見出し本発明に到達した。 As a result of intensive studies to achieve the above-mentioned problems, the present inventor provided an antifouling layer on one surface of a film having an antistatic layer on at least one surface, and an adhesive layer on the other surface. As a result, it has been found that if an antistatic agent blended in an acrylic polymer having a hydrophilic group is used, excellent peeling antistatic and antifouling effects can be achieved simultaneously.
かくして本発明によれば、「ポリエステルフィルムの片側に粘着剤層、その反対側に帯電防止層およびその上に防汚層が形成されているか、または、防汚性と帯電防止性とを有する層が形成された表面保護用粘着フィルムであって、該粘着剤層が親水性基を有するアクリル系ポリマーと帯電防止剤とを含むアクリル系粘着剤から形成されており、該親水性基を有するアクリル系ポリマーが、アルキル基の炭素数が１〜１４であるアルキル（メタ）アクリレートと、共重合割合として２０モル％以上の、親水性基を有する（メタ）アクリル酸から誘導される（メタ）アクリルモノマーとの共重合体であることを特徴とする表面保護用粘着フィルム。」が提供される。 Thus, according to the present invention, "the pressure-sensitive adhesive layer is formed on one side of the polyester film, the antistatic layer is formed on the opposite side, and the antifouling layer is formed thereon, or a layer having antifouling properties and antistatic properties. a surface protecting adhesive film but formed, is formed from the acrylic pressure-sensitive adhesive comprising an acrylic polymer and the antistatic agent pressure-sensitive adhesive layer has a hydrophilic group, acrylic having hydrophilic group (Meth) acrylic polymer derived from alkyl (meth) acrylate having 1 to 14 carbon atoms in the alkyl group and (meth) acrylic acid having a hydrophilic group with a copolymerization ratio of 20 mol% or more A surface-protective pressure-sensitive adhesive film characterized by being a copolymer with a monomer . "
また好ましい態様として、帯電防止剤が常温で液体のイオン系帯電防止剤であること、帯電防止剤が、下記一般式（Ａ）〜（Ｃ）で表されるカチオンの少なくとも１種を含むイオン系帯電防止剤であること、
本発明の表面保護用粘着フィルムは、ポリエステルの片側の面に防汚層と帯電防止層を形成するか、帯電防止性と防汚性とを有する層が形成され、他方の面に親水性基を有するアクリル系ポリマー中に帯電防止剤を含有するアクリル系粘着剤から形成された粘着剤層が形成されているので、例えば大面積の光学機能を有する光学フィルムの表面保護用に用いた場合でも、該保護フィルムを剥離する際の剥離帯電が少なく、また、例えば表面保護フィルムを光学フィルムに貼り合せた後に裁断した際、裁断面からはみ出した粘着剤が保護フィルム表面に付着することを防止できるので、例えば偏光板の表面保護フィルム用として用いれば、製品の欠陥検査が精度よく行うことができる。 The pressure-sensitive adhesive film for surface protection of the present invention has a stainproof layer and an antistatic layer formed on one side of the polyester, or a layer having antistatic and antifouling properties, and a hydrophilic group on the other side. Since the pressure-sensitive adhesive layer formed from an acrylic pressure-sensitive adhesive containing an antistatic agent is formed in the acrylic polymer having the above, for example, even when used for surface protection of an optical film having a large area optical function When the protective film is peeled off, there is little peeling charge, and for example, when the surface protective film is bonded to the optical film and then cut, the adhesive protruding from the cut surface can be prevented from adhering to the surface of the protective film. Therefore, for example, if it is used for a surface protective film of a polarizing plate, a product defect inspection can be performed with high accuracy.
以下、本発明を詳細に説明する。
本発明の表面保護用粘着フィルムは、ポリエステルフィルムの片側の面に防汚性と帯電防止性を有する層（これらの性能を同時に有する層一つであっても、別々に有する層を防汚層が表層になるように積層したものであってもよい）を有し、反対側の面に親水性基を有するアクリル系ポリマーと帯電防止剤とを含むアクリル系粘着剤から形成された粘着剤層を有している必要がある。
Hereinafter, the present invention will be described in detail.
The pressure-sensitive adhesive film for surface protection according to the present invention is a layer having antifouling properties and antistatic properties on one side of a polyester film (even if one layer having these performances is provided at the same time, a separate layer is provided as an antifouling layer). The adhesive layer is formed from an acrylic adhesive containing an acrylic polymer having a hydrophilic group on the opposite surface and an antistatic agent. It is necessary to have.
粘着剤層に用いられる、親水性基を有するアクリル系ポリマーと併用される帯電防止剤は、その種類は特に限定する必要はないが、粘着特性を損なうことがなく、しかもアクリル系ポリマー中の親水性基との相互作用により優れた帯電防止効果が得られることからカチオン系またはアニオン系のイオン系帯電防止剤が好ましく、特に窒素、硫黄またはリンのオニウム塩であるカチオン系帯電防止剤、なかでも下記一般式（Ａ）〜（Ｃ）で表されるカチオンの少なくとも１種を含むカチオン系帯電防止剤が好ましい。 The type of the antistatic agent used in combination with the acrylic polymer having a hydrophilic group used in the pressure-sensitive adhesive layer is not particularly limited, but it does not impair the adhesive properties, and it is hydrophilic in the acrylic polymer. Cationic or anionic ionic antistatic agents are preferred because of their excellent antistatic effect due to the interaction with the functional group, especially cationic antistatic agents which are onium salts of nitrogen, sulfur or phosphorus, A cationic antistatic agent containing at least one cation represented by the following general formulas (A) to (C) is preferred.
［式（Ｂ）中、Ｒｄは、ヘテロ原子を含んでいてもよい炭素数２〜２０の炭化水素基を表し、Ｒｅ、ＲｆおよびＲｇは、同一又は異なって、水素原子またはヘテロ原子を含んでいてもよい炭素数１〜１６の炭化水素基を表す。］
［式（Ｃ）中、Ｒｈは、ヘテロ原子を含んでいてもよい炭素数２〜２０の炭化水素基を表し、Ｒｉ、ＲｊおよびＲｋは、同一又は異なって、水素またはヘテロ原子を含んでいてもよい炭素数１から１６の炭化水素基を表す。］
[In the formula (B), Rd represents a hydrocarbon group having 2 to 20 carbon atoms which may contain a hetero atom, and Re, Rf and Rg are the same or different and contain a hydrogen atom or a hetero atom. The C1-C16 hydrocarbon group which may be mentioned. ]
[In the formula (C), Rh represents a hydrocarbon group having 2 to 20 carbon atoms which may contain a hetero atom, and Ri, Rj and Rk are the same or different and contain hydrogen or a heteroatom. Represents a hydrocarbon group having 1 to 16 carbon atoms. ]
また、本発明で用いられる帯電防止剤は、常温で液体のイオン系帯電防止剤、特に上記一般式（Ａ）〜（Ｃ）で表されるカチオン系帯電防止剤が、粘着特性を損なうことなく優れた帯電防止効果が得られるので好ましい。なお、本発明で用いられる帯電防止剤は２種以上を併用しても構わない。 Further, the antistatic agent used in the present invention is an ionic antistatic agent that is liquid at room temperature, in particular, the cationic antistatic agent represented by the above general formulas (A) to (C), without impairing the adhesive properties. It is preferable because an excellent antistatic effect can be obtained. In addition, you may use together 2 or more types of antistatic agents used by this invention.
好ましく用いられるカチオン系帯電防止剤の式（Ａ）で表されるカチオンとしては、ピリジニウムカチオン、ピペリジニウムカチオン、ピロリジニウムカチオン、ピロリン骨格を有するカチオン、ピロール骨格を有するカチオンなどがあげられる。具体例としては、１−エチルピリジニウムカチオン、１−ブチルピリジニウムカチオン、１−へキシルピリジニウムカチオン、１−ブチル−３−メチルピリジニウムカチオン、１−ブチル−４−メチルピリジニウムカチオン、１−へキシル−３−メチルピリジニウムカチオン、１−ブチル−３，４−ジメチルピリジニウムカチオン、１，１−ジメチルピロリジニウムカチオン、１−エチル−１−メチルピロリジニウムカチオン、１−メチル−１−プロピルピロリジニウムカチオン、２−メチル−１−ピロリンカチオン、１−エチル−２−フェニルインドールカチオン、１，２−ジメチルインドールカチオン、１−エチルカルバゾールカチオンがあげられる。 Examples of the cation represented by the formula (A) of the cationic antistatic agent preferably used include a pyridinium cation, a piperidinium cation, a pyrrolidinium cation, a cation having a pyrroline skeleton, and a cation having a pyrrole skeleton. Specific examples include 1-ethylpyridinium cation, 1-butylpyridinium cation, 1-hexylpyridinium cation, 1-butyl-3-methylpyridinium cation, 1-butyl-4-methylpyridinium cation, 1-hexyl-3. -Methylpyridinium cation, 1-butyl-3,4-dimethylpyridinium cation, 1,1-dimethylpyrrolidinium cation, 1-ethyl-1-methylpyrrolidinium cation, 1-methyl-1-propylpyrrolidinium cation 2-methyl-1-pyrroline cation, 1-ethyl-2-phenylindole cation, 1,2-dimethylindole cation, and 1-ethylcarbazole cation.
式（Ｂ）で表されるカチオンとしては、イミダゾリウムカチオン、テトラヒドロピリミジニウムカチオン、ジヒドロピリミジニウムカチオンなどがあげられる。具体例としては、１，３−ジメチルイミダゾリウムカチオン、１，３−ジエチルイミダゾリウムカチオン、１−エチル−３−メチルイミダゾリウムカチオン、１−ブチル−３−メチルイミダゾリウムカチオン、１−へキシル−３−メチルイミダゾリウムカチオン、１−オクチル−３−メチルイミダゾリウムカチオン、１−デシル−３−メチルイミダゾリウムカチオン、１−ドデシル−３−メチルイミダゾリウムカチオン、１−テトラデシル−３−メチルイミダゾリウムカチオン、１，２−ジメチル−３−プロピルイミダゾリウムカチオン、１−エチル−２，３−ジメチルイミダゾリウムカチオン、１−ブチル−２，３−ジメチルイミダゾリウムカチオン、１−へキシル−２，３−ジメチルイミダゾリウムカチオン、１，３−ジメチル−１，４，５，６−テトラヒドロピリミジニウムカチオン、１，２，３−トリメチル−１，４，５，６−テトラヒドロピリミジニウムカチオン、１，２，３，４−テトラメチル−１，４，５，６−テトラヒドロピリミジニウムカチオン、１，２，３，５−テトラメチル−１，４，５，６−テトラヒドロピリミジニウムカチオン、１，３−ジメチル−１，４−ジヒドロピリミジニウムカチオン、１，３−ジメチル−１，６−ジヒドロピリミジニウムカチオン、１，２，３−トリメチル−１，４−ジヒドロピリミジニウムカチオン、１，２，３−トリメチル−１，６−ジヒドロピリミジニウムカチオン、１，２，３，４−テトラメチル−１，４−ジヒドロピリミジニウムカチオン、１，２，３，４−テトラメチル−１，６−ジヒドロピリミジニウムカチオンなどがあげられる。 Examples of the cation represented by the formula (B) include an imidazolium cation, a tetrahydropyrimidinium cation, and a dihydropyrimidinium cation. Specific examples include 1,3-dimethylimidazolium cation, 1,3-diethylimidazolium cation, 1-ethyl-3-methylimidazolium cation, 1-butyl-3-methylimidazolium cation, 1-hexyl- 3-methylimidazolium cation, 1-octyl-3-methylimidazolium cation, 1-decyl-3-methylimidazolium cation, 1-dodecyl-3-methylimidazolium cation, 1-tetradecyl-3-methylimidazolium cation 1,2-dimethyl-3-propylimidazolium cation, 1-ethyl-2,3-dimethylimidazolium cation, 1-butyl-2,3-dimethylimidazolium cation, 1-hexyl-2,3-dimethyl Imidazolium cation, 1,3-dimethyl-1,4 5,6-tetrahydropyrimidinium cation, 1,2,3-trimethyl-1,4,5,6-tetrahydropyrimidinium cation, 1,2,3,4-tetramethyl-1,4,5,6 -Tetrahydropyrimidinium cation, 1,2,3,5-tetramethyl-1,4,5,6-tetrahydropyrimidinium cation, 1,3-dimethyl-1,4-dihydropyrimidinium cation, 1, 3-dimethyl-1,6-dihydropyrimidinium cation, 1,2,3-trimethyl-1,4-dihydropyrimidinium cation, 1,2,3-trimethyl-1,6-dihydropyrimidinium cation, 1,2,3,4-tetramethyl-1,4-dihydropyrimidinium cation, 1,2,3,4-tetramethyl-1,6-dihydropyrimidinium cation And the like.
また式（Ｃ）で表されるカチオンとしては、ピラゾリウムカチオン、ピラゾリニウムカチオンなどがあげられる。具体例としては、１−メチルピラゾリウムカチオン、３−メチルピラゾリウムカチオン、１−エチル−２−メチルピラゾリニウムカチオンなどがあげられる。 Examples of the cation represented by the formula (C) include a pyrazolium cation and a pyrazolinium cation. Specific examples include 1-methylpyrazolium cation, 3-methylpyrazolium cation, 1-ethyl-2-methylpyrazolinium cation and the like.
一方、好ましく用いられるカチオン系帯電防止剤のアニオン成分は特に限定する必要はなく、例えばＣｌ−、Ｂｒ−、Ｉ−、ＡｌＣｌ４ −、Ａｌ２Ｃｌ７ −、ＢＦ４ −、ＰＦ６ −、ＣｌＯ４ −、ＮＯ３ −、ＣＨ３ＣＯＯ−、ＣＦ３ＣＯＯ−、ＣＨ３ＳＯ３ −、ＣＦ３ＳＯ３ −、（ＣＦ３ＳＯ２）２Ｎ−、（ＣＦ３ＳＯ２）３Ｃ−、ＡｓＦ６ −、ＳｂＦ６ −、ＮｂＦ６ −、ＴａＦ６ −、Ｆ（ＨＦ）ｎ −、（ＣＮ）２Ｎ−、Ｃ４Ｆ９ＳＯ３ −、（Ｃ２Ｆ５ＳＯ２）２Ｎ−、Ｃ３Ｆ７ＣＯＯ−、（ＣＦ３ＳＯ２）（ＣＦ３ＣＯ）Ｎ−などが用いられる。なかでも、フッ素原子を含むアニオン成分は、常温で液体を示す低融点のイオン系帯電防止剤が得られることから好ましく用いられる。 On the other hand, the anionic component of the cationic antistatic agent preferably used is not particularly limited. For example, Cl − , Br − , I − , AlCl 4 − , Al 2 Cl 7 − , BF 4 − , PF 6 − , ClO 4 -, NO 3 -, CH 3 COO -, CF 3 COO -, CH 3 SO 3 -, CF 3 SO 3 -, (CF 3 SO 2) 2 N -, (CF 3 SO 2) 3 C -, AsF 6 − , SbF 6 − , NbF 6 − , TaF 6 − , F (HF) n − , (CN) 2 N − , C 4 F 9 SO 3 − , (C 2 F 5 SO 2 ) 2 N − , C 3 F 7 COO - and the like are used -, N (CF 3 SO 2 ) (CF 3 CO). Among these, an anionic component containing a fluorine atom is preferably used because an ionic antistatic agent having a low melting point and showing a liquid at room temperature can be obtained.
本発明で特に好ましく用いられる、常温で液体のカチオン系帯電防止剤の具体例としては、上記カチオン成分とアニオン成分とを適宜選択して組み合わせたものがあげられる。例えば、１−ブチルピリジニウムテトラフルオロボレート、１−ブチルピリジニウムヘキサフルオロホスフェート、１−ブチル−３−メチルピリジニウムテトラフルオロボレート、１−ブチル−３−メチルピリジニウムトリフルオロメタンスルホネート、１−ブチル−３−メチルピリジニウムビス（トリフルオロメタンスルホニル）イミド、１−ブチル−３−メチルピリジニウムビス（ペンタフルオロエタンスルホニル）イミド、１−へキシルピリジニウムテトラフルオロボレート、２−メチル−１−ピロリンテトラフルオロボレート、１−エチル−２−フェニルインドールテトラフルオロボレート、１，２−ジメチルインドールテトラフルオロボレート、１−エチルカルバゾールテトラフルオロボレート、１−エチル−３−メチルイミダゾリウムテトラフルオロボレート、１−エチル−３−メチルイミダゾリウムアセテート、１−エチル−３−メチルイミダゾリウムトリフルオロアセテート、１−エチル−３−メチルイミダゾリウムヘプタフルオロブチレート、１−エチル−３−メチルイミダゾリウムトリフルオロメタンスルホネート、１−エチル−３−メチルイミダゾリウムペルフルオロブタンスルホネート、１−エチル−３−メチルイミダゾリウムジシアナミド、１−エチル−３−メチルイミダゾリウムビス（トリフルオロメタンスルホニル）イミド、１−エチル−３−メチルイミダゾリウムビス（ペンタフルオロエタンスルホニル）イミド、１−エチル−３−メチルイミダゾリウムビス（トリフルオロメタンスルホニル）イミド、１−ブチル−３−メチルイミダゾリウムテトラフルオロボレート、１−ブチル−３−メチルイミダゾリウムヘキサフルオロホスフェート、１−ブチル−３−メチルイミダゾリウムトリフルオロアセテート、１−ブチル−３−メチルイミダゾリウムヘプタフルオロブチレート、１−ブチル−３−メチルイミダゾリウムトリフルオロメタンスルホネート、１−ブチル−３−メチルイミダゾリウムペルフルオロブタンスルホネート、１−ブチル−３−メチルイミダゾリウムビス（トリフルオロメタンスルホニル）イミド、１−へキシル−３−メチルイミダゾリウムブロミド、１−へキシル−３−メチルイミダゾリウムクロライド、１−へキシル−３−メチルイミダゾリウムテトラフルオロボレート、１−へキシル−３−メチルイミダゾリウムヘキサフルオロホスフェート、１−へキシル−３−メチルイミダゾリウムトリフルオロメタンスルホネート、１−オクチル−３−メチルイミダゾリウムテトラフルオロボレート、１−オクチル−３−メチルイミダゾリウムヘキサフルオロホスフェート、１−へキシル−２，３−ジメチルイミダゾリウムテトラフルオロボレート、１，２−ジメチル−３−プロピルイミダゾリウムビス（トリフルオロメタンスルホニル）イミド、１−メチルピラゾリウムテトラフルオロボレート、３−メチルピラゾリウムテトラフルオロボレート、テトラヘキシルアンモニウムビス（トリフルオロメタンスルホニル）イミド、ジアリルジメチルアンモニウムテトラフルオロボレート、ジアリルジメチルアンモニウムトリフルオロメタンスルホネート、ジアリルジメチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、ジアリルジメチルアンモニウムビス（ペンタフルオロエタンスルホニル）イミド、Ｎ，Ｎ―ジエチル―Ｎ―メチル―Ｎ−（２−メトキシエチル）アンモニウムテトラフルオロボレート、Ｎ，Ｎ―ジエチル―Ｎ―メチル―Ｎ−（２−メトキシエチル）アンモニウムトリフルオロメタンスルホネート、Ｎ，Ｎ―ジエチル―Ｎ―メチル―Ｎ−（２−メトキシエチル）アンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ―ジエチル―Ｎ―メチル―Ｎ−（２−メトキシエチル）アンモニウムビス（ペンタフルオロエタンスルホニル）イミド、グリシジルトリメチルアンモニウムトリフルオロメタンスルホネート、グリシジルトリメチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、グリシジルトリメチルアンモニウムビス（ペンタフルオロエタンスルホニル）イミド、１−ブチルピリジニウム（トリフルオロメタンスルホニル）トリフルオロアセトアミド、１−ブチル−３−メチルピリジニウム（トリフルオロメタンスルホニル）トリフルオロアセトアミド、１−エチル−３−メチルイミダゾリウム（トリフルオロメタンスルホニル）トリフルオロアセトアミド、ジアリルジメチルアンモニウム（トリフルオロメタンスルホニル）トリフルオロアセトアミド、グリシジルトリメチルアンモニウム（トリフルオロメタンスルホニル）トリフルオロアセトアミド、Ｎ，Ｎ−ジメチル−Ｎ−エチル−Ｎ−プロピルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジメチル−Ｎ−エチル−Ｎ−ブチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジメチル−Ｎ−エチル−Ｎ−ペンチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジメチル−Ｎ−エチル−Ｎ−へキシルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジメチル−Ｎ−エチル−Ｎ−ヘプチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジメチル−Ｎ−エチル−Ｎ−ノニルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジメチル−Ｎ，Ｎ−ジプロピルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジメチル−Ｎ−プロピル−Ｎ−ブチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジメチル−Ｎ−プロピル−Ｎ−ペンチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジメチル−Ｎ−プロピル−Ｎ−ヘキシルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジメチル−Ｎ−プロピル−Ｎ−ヘプチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジメチル−Ｎ−ブチル−Ｎ−ヘキシルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジメチル−Ｎ−ブチル−Ｎ−ヘプチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジメチル−Ｎ−ペンチル−Ｎ−ヘキシルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジメチル−Ｎ，Ｎ−ジヘキシルアンモニウムビス（トリフルオロメタンスルホニル）イミド、トリメチルヘプチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジエチル−Ｎ−メチル−Ｎ−プロピルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジエチル−Ｎ−メチル−Ｎ−ペンチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジエチル−Ｎ−メチル−Ｎ−ヘプチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジエチル−Ｎ−プロピル−Ｎ−ペンチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、トリエチルプロピルアンモニウムビス（トリフルオロメタンスルホニル）イミド、トリエチルペンチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、トリエチルヘプチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジプロピル−Ｎ−メチル−Ｎ−エチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジプロピル−Ｎ−メチル−Ｎ−ペンチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジプロピル−Ｎ−ブチル−Ｎ−へキシルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジプロピル−Ｎ，Ｎ−ジヘキシルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジブチル−Ｎ−メチル−Ｎ−ペンチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ，Ｎ−ジブチル−Ｎ−メチル−Ｎ−ヘキシルアンモニウムビス（トリフルオロメタンスルホニル）イミド、トリオクチルメチルアンモニウムビス（トリフルオロメタンスルホニル）イミド、Ｎ−メチル−Ｎ−エチル−Ｎ−プロピル−Ｎ−ペンチルアンモニウムビス（トリフルオロメタンスルホニル）イミドなどがあげられる。 Specific examples of the cationic antistatic agent which is particularly preferably used in the present invention and which is liquid at room temperature include those obtained by appropriately selecting and combining the cationic component and the anionic component. For example, 1-butylpyridinium tetrafluoroborate, 1-butylpyridinium hexafluorophosphate, 1-butyl-3-methylpyridinium tetrafluoroborate, 1-butyl-3-methylpyridinium trifluoromethanesulfonate, 1-butyl-3-methylpyridinium Bis (trifluoromethanesulfonyl) imide, 1-butyl-3-methylpyridinium bis (pentafluoroethanesulfonyl) imide, 1-hexylpyridinium tetrafluoroborate, 2-methyl-1-pyrroline tetrafluoroborate, 1-ethyl-2 -Phenylindole tetrafluoroborate, 1,2-dimethylindole tetrafluoroborate, 1-ethylcarbazole tetrafluoroborate, 1-ethyl-3-methylimidazo Um tetrafluoroborate, 1-ethyl-3-methylimidazolium acetate, 1-ethyl-3-methylimidazolium trifluoroacetate, 1-ethyl-3-methylimidazolium heptafluorobutyrate, 1-ethyl-3-methyl Imidazolium trifluoromethanesulfonate, 1-ethyl-3-methylimidazolium perfluorobutanesulfonate, 1-ethyl-3-methylimidazolium dicyanamide, 1-ethyl-3-methylimidazolium bis (trifluoromethanesulfonyl) imide, 1- Ethyl-3-methylimidazolium bis (pentafluoroethanesulfonyl) imide, 1-ethyl-3-methylimidazolium bis (trifluoromethanesulfonyl) imide, 1-butyl-3-methylimidazolium Lafluoroborate, 1-butyl-3-methylimidazolium hexafluorophosphate, 1-butyl-3-methylimidazolium trifluoroacetate, 1-butyl-3-methylimidazolium heptafluorobutyrate, 1-butyl-3- Methylimidazolium trifluoromethanesulfonate, 1-butyl-3-methylimidazolium perfluorobutanesulfonate, 1-butyl-3-methylimidazolium bis (trifluoromethanesulfonyl) imide, 1-hexyl-3-methylimidazolium bromide, 1 -Hexyl-3-methylimidazolium chloride, 1-hexyl-3-methylimidazolium tetrafluoroborate, 1-hexyl-3-methylimidazolium hexafluorophosphate, 1-hexyl-3- Methyl imidazolium trifluoromethanesulfonate, 1-octyl-3-methylimidazolium tetrafluoroborate, 1-octyl-3-methylimidazolium hexafluorophosphate, 1-hexyl-2,3-dimethylimidazolium tetrafluoroborate, 1 , 2-Dimethyl-3-propylimidazolium bis (trifluoromethanesulfonyl) imide, 1-methylpyrazolium tetrafluoroborate, 3-methylpyrazolium tetrafluoroborate, tetrahexylammonium bis (trifluoromethanesulfonyl) imide, diallyl Dimethylammonium tetrafluoroborate, diallyldimethylammonium trifluoromethanesulfonate, diallyldimethylammonium bis (trifluoromethanesulfurate) Nyl) imide, diallyldimethylammonium bis (pentafluoroethanesulfonyl) imide, N, N-diethyl-N-methyl-N- (2-methoxyethyl) ammonium tetrafluoroborate, N, N-diethyl-N-methyl-N -(2-methoxyethyl) ammonium trifluoromethanesulfonate, N, N-diethyl-N-methyl-N- (2-methoxyethyl) ammonium bis (trifluoromethanesulfonyl) imide, N, N-diethyl-N-methyl-N -(2-methoxyethyl) ammonium bis (pentafluoroethanesulfonyl) imide, glycidyltrimethylammonium trifluoromethanesulfonate, glycidyltrimethylammonium bis (trifluoromethanesulfonyl) imide, glycidyltrimethyl Ammonium bis (pentafluoroethanesulfonyl) imide, 1-butylpyridinium (trifluoromethanesulfonyl) trifluoroacetamide, 1-butyl-3-methylpyridinium (trifluoromethanesulfonyl) trifluoroacetamide, 1-ethyl-3-methylimidazolium ( Trifluoromethanesulfonyl) trifluoroacetamide, diallyldimethylammonium (trifluoromethanesulfonyl) trifluoroacetamide, glycidyltrimethylammonium (trifluoromethanesulfonyl) trifluoroacetamide, N, N-dimethyl-N-ethyl-N-propylammonium bis (trifluoromethane) Sulfonyl) imide, N, N-dimethyl-N-ethyl-N-butylammonium bis (trifluoro) Romethanesulfonyl) imide, N, N-dimethyl-N-ethyl-N-pentylammonium bis (trifluoromethanesulfonyl) imide, N, N-dimethyl-N-ethyl-N-hexylammonium bis (trifluoromethanesulfonyl) imide, N, N-dimethyl-N-ethyl-N-heptylammonium bis (trifluoromethanesulfonyl) imide, N, N-dimethyl-N-ethyl-N-nonylammonium bis (trifluoromethanesulfonyl) imide, N, N-dimethyl- N, N-dipropylammonium bis (trifluoromethanesulfonyl) imide, N, N-dimethyl-N-propyl-N-butylammonium bis (trifluoromethanesulfonyl) imide, N, N-dimethyl-N-propyl-N-pentyl Ammonium bi (Trifluoromethanesulfonyl) imide, N, N-dimethyl-N-propyl-N-hexylammonium bis (trifluoromethanesulfonyl) imide, N, N-dimethyl-N-propyl-N-heptylammonium bis (trifluoromethanesulfonyl) imide N, N-dimethyl-N-butyl-N-hexylammonium bis (trifluoromethanesulfonyl) imide, N, N-dimethyl-N-butyl-N-heptylammonium bis (trifluoromethanesulfonyl) imide, N, N-dimethyl -N-pentyl-N-hexylammonium bis (trifluoromethanesulfonyl) imide, N, N-dimethyl-N, N-dihexylammonium bis (trifluoromethanesulfonyl) imide, trimethylheptylammonium bis ( Trifluoromethanesulfonyl) imide, N, N-diethyl-N-methyl-N-propylammonium bis (trifluoromethanesulfonyl) imide, N, N-diethyl-N-methyl-N-pentylammonium bis (trifluoromethanesulfonyl) imide N, N-diethyl-N-methyl-N-heptylammonium bis (trifluoromethanesulfonyl) imide, N, N-diethyl-N-propyl-N-pentylammonium bis (trifluoromethanesulfonyl) imide, triethylpropylammonium bis ( Trifluoromethanesulfonyl) imide, triethylpentylammonium bis (trifluoromethanesulfonyl) imide, triethylheptylammonium bis (trifluoromethanesulfonyl) imide, N, N-dipro Pyr-N-methyl-N-ethylammonium bis (trifluoromethanesulfonyl) imide, N, N-dipropyl-N-methyl-N-pentylammonium bis (trifluoromethanesulfonyl) imide, N, N-dipropyl-N-butyl- N-hexylammonium bis (trifluoromethanesulfonyl) imide, N, N-dipropyl-N, N-dihexylammonium bis (trifluoromethanesulfonyl) imide, N, N-dibutyl-N-methyl-N-pentylammonium bis (trifluoro) (Romethanesulfonyl) imide, N, N-dibutyl-N-methyl-N-hexylammonium bis (trifluoromethanesulfonyl) imide, trioctylmethylammonium bis (trifluoromethanesulfonyl) imide, N-methyl-N-ethylene Such as Le -N- propyl -N- pentyl ammonium bis (trifluoromethanesulfonyl) imide and the like.
粘着剤層中の帯電防止剤の好ましい配合量は、後述する親水基を有するアクリル系ポリマーの種類によって変わってくるが、あまりに少ないと帯電防止効果が小さくなり、逆に多くなりすぎると被着される光学フィルムなどの汚染が増加する傾向があるので、上記一般式（Ａ）〜（Ｃ）をカチオン成分とするカチオン系帯電防止剤の場合では、一般には親水性基を有するアクリル系ポリマー１００重量部に対して、０．０１〜４０重量部が好ましく、０．０３〜２０重量部がより好ましく、０．０５〜１０重量部が最も好ましい。 The preferred blending amount of the antistatic agent in the pressure-sensitive adhesive layer varies depending on the type of acrylic polymer having a hydrophilic group, which will be described later, but if it is too small, the antistatic effect will be small, and conversely if it is too large, it will be deposited. In the case of a cationic antistatic agent having the general formulas (A) to (C) as a cationic component, generally 100 weight of an acrylic polymer having a hydrophilic group The amount is preferably 0.01 to 40 parts by weight, more preferably 0.03 to 20 parts by weight, and most preferably 0.05 to 10 parts by weight with respect to parts.
次に、本発明の粘着剤層を形成するに用いられるアクリル系ポリマーは、親水性基を有している必要がある。アクリル系ポリマーが親水性基を有していない場合には、上記の帯電防止剤を併用しても十分な剥離帯電低減効果が発現しないばかりか、帯電防止剤が被着体である偏光板などの光学フィルムに転写して、該光学フィルムを汚してしまうため好ましくない。 Next, the acrylic polymer used for forming the pressure-sensitive adhesive layer of the present invention needs to have a hydrophilic group. When the acrylic polymer does not have a hydrophilic group, the antistatic agent not only exhibits a sufficient effect of reducing the peeling charge even when used in combination with the above-mentioned antistatic agent, and a polarizing plate in which the antistatic agent is an adherend. It is not preferable because it is transferred to the optical film and soils the optical film.
好ましく用いられる親水性基を有するアクリル系ポリマーとしては、アルキル基の炭素数が１〜１４であるアルキルアクリレートおよび／またはメタアクリレート（以下、（メタ）アクリレートと略称することがある）と、親水性基を有する（メタ）アクリル酸から誘導される（メタ）アクリルモノマーの共重合体をあげることができ、親水性基を有する（メタ）アクリルモノマーの共重合割合は２０モル％以上であることが好ましく、特に４０モル％以上であることが好ましい。また、共重合体の分子量は、重量平均分子量で１０万以上であることが好ましい。 Examples of the acrylic polymer having a hydrophilic group that is preferably used include alkyl acrylates and / or methacrylates (hereinafter sometimes abbreviated as (meth) acrylates) having 1 to 14 carbon atoms in the alkyl group, and hydrophilicity. The copolymer of the (meth) acryl monomer derived from the (meth) acrylic acid having a group can be listed, and the copolymerization ratio of the (meth) acryl monomer having a hydrophilic group is 20 mol% or more. Particularly preferred is 40 mol% or more. Moreover, it is preferable that the molecular weight of a copolymer is 100,000 or more in a weight average molecular weight.
ここで好ましく用いられるアルキル基の炭素数が１〜１４であるアルキル（メタ）アクリレートとしては、例えば（メタ）アクリル酸メチル、（メタ）アクリル酸エチル、（メタ）アクリル酸プロピル、（メタ）アクリル酸ブチル、（メタ）アクリル酸−２−エチルヘキシル等をあげることができ、これらは単独で使用しても２種以上を併用してもよい。 Examples of the alkyl (meth) acrylate having 1 to 14 carbon atoms preferably used here include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, and (meth) acrylic. Acid butyl, (meth) acrylic acid-2-ethylhexyl and the like can be mentioned, and these may be used alone or in combination of two or more.
また、親水性基を有する（メタ）アクリルモノマーとしては、親水性基として水酸基、エーテル基、エポキシ基、アミド基、アミノ基、カルボキシル基などを有する（メタ）アクリルモノマーをあげることができ、なかでも、水酸基、エーテル基、エポキシ基などを有するもの、特に、−（ＯＣＨ２ＣＨ２）ｎＯＲで表される水酸基やエーテル結合を有する親水性基（但し、Ｒは水素原子、炭化水素基またはアシル基を示し、ｎは１以上の整数を示す。）が好ましい。具体的には、エチレングリコールの（メタ）アクリル酸エステル、ジエチレングリコールの（メタ）アクリル酸エステル、トリエチレングリコールの（メタ）アクリル酸エステル、テトラエチレングリコールの（メタ）アクリル酸エステル、および、これらの化合物中に存在する水酸基がエチルエーテル基で置換されたもの、さらには（メタ）アクリル酸グリシジルエステル等のエポキシ基含有モノマー等をあげることができる。なかでも、−（ＯＣＨ２ＣＨ２）ｎＯＲで表される（但し、ｎ＝１〜５）の親水性基を有する、低重合度ポリエチレングリコールの（メタ）アクリル酸エステルが好ましい。これらの親水性基を有する（メタ）アクリルモノマーも、単独で使用しても２種以上を併用してもよい。 Examples of (meth) acrylic monomers having a hydrophilic group include (meth) acrylic monomers having a hydroxyl group, an ether group, an epoxy group, an amide group, an amino group, a carboxyl group, etc. as hydrophilic groups. However, those having a hydroxyl group, an ether group, an epoxy group, etc., in particular, a hydroxyl group represented by-(OCH 2 CH 2 ) n OR or a hydrophilic group having an ether bond (provided that R is a hydrogen atom, a hydrocarbon group or Represents an acyl group, and n represents an integer of 1 or more. Specifically, (meth) acrylic acid ester of ethylene glycol, (meth) acrylic acid ester of diethylene glycol, (meth) acrylic acid ester of triethylene glycol, (meth) acrylic acid ester of tetraethylene glycol, and these Examples thereof include those in which the hydroxyl group present in the compound is substituted with an ethyl ether group, and epoxy group-containing monomers such as (meth) acrylic acid glycidyl ester. Among them, - (OCH 2 CH 2) represented by n OR (where, n = 1 to 5) having a hydrophilic group, the low degree of polymerization polyethylene glycol (meth) acrylic acid esters are preferred. These (meth) acrylic monomers having a hydrophilic group may be used alone or in combination of two or more.
かかる親水性基を有するアクリル系ポリマーには、本発明の目的を阻害しない範囲内で他の共重合モノマーを含んでいてもよく、例えば、酢酸ビニルなどのビニルエステル類、スチレン、α−メチルスチレンなどのスチレン類、エチレン、プロピレンなどのオレフィン類をあげることができる。 Such an acrylic polymer having a hydrophilic group may contain other copolymerization monomers within the range not impairing the object of the present invention, for example, vinyl esters such as vinyl acetate, styrene, α-methylstyrene. And olefins such as ethylene and propylene.
上記成分を含有する本発明のアクリル系粘着剤は、粘着剤層の耐熱性を向上させる観点から架橋剤を併用することが好ましい。架橋剤としては特に制限する必要はないが、イソシアネート系架橋剤やエポキシ系架橋剤が、適度な凝集力が得られることから好ましく、なかでもイソシアネート系架橋剤が好ましい。好ましく用いられるイソシアネート系架橋剤としては、ブチレンジイソシアネート、ヘキサメチレンジイソシアネートなどの低級脂肪族ポリイソシアネート類、シクロペンチレンジイソシアネート、シクロヘキシレンジイソシアネート、イソホロンジイソシアネートなどの脂環族イソシアネート類、トリレンジイソシアネート、ジフェニルメタンジイソシアネート、キシリレンジイソシアネートなどの芳香族ジイソシアネート類、トリメチロールプロパン／トリレンジイソシアネート３量体付加物（商品名コロネートＬ），トリメチロールプロパン／ヘキサメチレンジイソシアネート３量体付加物（商品名コロネートＨＬ）、ヘキサメチレンジイソシアネートのイソシアヌレート体（商品名コロネートＨＸ）［いずれも日本ポリウレタン工業（株）製］などのイソシアネート付加物などがあげられる。これらの架橋剤は、単独で使用してもよく、また２種以上を混合して使用してもよい。 The acrylic pressure-sensitive adhesive of the present invention containing the above components is preferably used in combination with a crosslinking agent from the viewpoint of improving the heat resistance of the pressure-sensitive adhesive layer. Although it does not need to restrict | limit especially as a crosslinking agent, An isocyanate type crosslinking agent and an epoxy type crosslinking agent are preferable from a moderate cohesive force being obtained, and an isocyanate type crosslinking agent is especially preferable. Preferred isocyanate-based crosslinking agents include lower aliphatic polyisocyanates such as butylene diisocyanate and hexamethylene diisocyanate, alicyclic isocyanates such as cyclopentylene diisocyanate, cyclohexylene diisocyanate, and isophorone diisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate , Aromatic diisocyanates such as xylylene diisocyanate, trimethylolpropane / tolylene diisocyanate trimer adduct (trade name Coronate L), trimethylolpropane / hexamethylene diisocyanate trimer adduct (trade name Coronate HL), hexa Isocyanurate of methylene diisocyanate (trade name Coronate HX) Ltd.) isocyanate adducts such as, and the like. These crosslinking agents may be used alone or in combination of two or more.
架橋剤の使用量は、用いられる架橋剤と親水性基を有するアクリル系ポリマーの種類、さらには、どのような光学フィルムの表面保護用として用いられるか、などによって適宜選択すればよいが、アクリル系粘着剤の凝集力により充分な耐熱性を得るためには、一般的には上記アクリル系ポリマー１００重量部に対して０．０１重量部以上配合するのが好ましい。しかし、多くなりすぎると粘着剤の柔軟性や接着性が低下する場合があるので、該アクリル系ポリマー１００重量部に対して１５重量部以下、特に１〜５重量部の範囲とするのが好ましい。 The amount of the crosslinking agent used may be appropriately selected depending on the kind of the acrylic polymer having the crosslinking agent and the hydrophilic group used, and what kind of optical film is used for protecting the surface. In order to obtain sufficient heat resistance due to the cohesive strength of the adhesive, it is generally preferable to add 0.01 parts by weight or more with respect to 100 parts by weight of the acrylic polymer. However, if the amount is too large, the flexibility and adhesiveness of the pressure-sensitive adhesive may be reduced. Therefore, the amount is preferably 15 parts by weight or less, particularly 1 to 5 parts by weight with respect to 100 parts by weight of the acrylic polymer. .
さらに本発明の粘着剤層には、従来公知の各種の粘着付与剤や表面潤滑剤、レベリング剤、酸化防止剤、腐食防止剤、光安定剤、紫外線吸収剤、重合禁止剤、シランカップリンング剤、無機または有機の充項剤、金属粉、顔料などの粉体、粒子状、箔状物などの従来公知の各種添加剤を使用する用途に応じて適宜添加しても構わない。 Further, the pressure-sensitive adhesive layer of the present invention includes various conventionally known tackifiers, surface lubricants, leveling agents, antioxidants, corrosion inhibitors, light stabilizers, ultraviolet absorbers, polymerization inhibitors, silane couplings. Depending on the use for which various conventionally known additives such as a powder, a powder such as an inorganic or organic filler, a metal powder or a pigment, a particle, or a foil are used, they may be added as appropriate.
以上の成分より形成される粘着剤層の厚みは、通常３〜２００μｍの範囲、好ましくは１０〜１００μｍの範囲となるようにすればよい。粘着剤層の形成方法は特に制限されず、粘着テープ等の製造に用いられる公知の方法を採用すればよい。具体的には、上記の粘着剤成分を適当な溶媒に溶解・分散させた液を、ロールコート、グラビアコート、リバースコート、ロールブラッシュ、スプレーコート、エアーナイフコート、ダイコートなどの方法から、適宜選択すればよい。 The thickness of the pressure-sensitive adhesive layer formed from the above components is usually in the range of 3 to 200 μm, preferably in the range of 10 to 100 μm. The formation method in particular of an adhesive layer is not restrict | limited, What is necessary is just to employ | adopt the well-known method used for manufacture of an adhesive tape etc. Specifically, a solution obtained by dissolving and dispersing the above-mentioned pressure-sensitive adhesive component in an appropriate solvent is appropriately selected from methods such as roll coating, gravure coating, reverse coating, roll brushing, spray coating, air knife coating, and die coating. do it.
また、本発明の表面保護用粘着フィルムを例えば偏光板などの光学フィルムの表面保護に用いる場合には、粘着剤層中および粘着剤表面の異物総数が、径１５０μｍ以上の異物で０個／ｍ２であり、かつ、７０μｍ以上１５０μｍ未満の異物で５個／ｍ２以下であることが好ましい。異物の数がこれを超える場合には、被着体である偏光板などの光学フィルムと表面保護用粘着フィルムの粘着層との間に気泡が入ってしみになったり、搬送時に表面保護フィルムが剥離してしまう場合がある。また、偏光板等を表面保護用粘着フィルムを貼付したままで検査する場合の検査精度が低下する場合がある。 When the surface protective adhesive film of the present invention is used for surface protection of an optical film such as a polarizing plate, the total number of foreign substances in the adhesive layer and on the adhesive surface is 0 / m for foreign substances having a diameter of 150 μm or more. 2 and preferably 5 / m 2 or less for foreign matters of 70 μm or more and less than 150 μm. If the number of foreign objects exceeds this, bubbles may be included between the optical film such as a polarizing plate as the adherend and the adhesive layer of the surface protective adhesive film, or the surface protective film may be removed during transportation. It may peel off. Moreover, the inspection accuracy in the case of inspecting the polarizing plate or the like with the adhesive film for surface protection attached may be lowered.
このように異物数の少ないフィルムは、上記の粘着剤を塗布する際に、該粘着剤塗布液を１μｍ以上２０μｍ以下のフィルターでろ過したものを使用すればよい。好ましく用いられるフィルターとしては、例えば不織布タイプ、糸巻きタイプ等をあげることができ、粘着剤塗液中のゲル成分および異物を効率的に捕集できるものであれば上記に制限されるものではない。また、ろ過は、１段ではなく、はじめに目の粗いフィルターを用い、次いで目の細かいフィルターを用いる２段以上のろ過を行ってもよい。なお、ろ過処理を施すことによって、粘着剤塗液を調整する際の攪拌処理により生じたエアーを粘着剤塗液から分離できるので好ましい。 As the film having a small number of foreign matters, a film obtained by filtering the pressure-sensitive adhesive coating solution with a filter of 1 μm or more and 20 μm or less may be used when the above pressure-sensitive adhesive is applied. Examples of the filter preferably used include a non-woven fabric type and a thread-wound type, and are not limited to the above as long as the gel component and foreign matters in the pressure-sensitive adhesive coating liquid can be efficiently collected. Further, the filtration may be performed in two or more stages using a coarse filter first, and then using a fine filter instead of one stage. In addition, since the air produced by the stirring process at the time of adjusting an adhesive coating liquid can be isolate | separated from an adhesive coating liquid by performing a filtration process, it is preferable.
さらに、粘着剤塗液を塗布する工程のクリーン度をクラス１０００以下にすることが好ましい。粘着剤塗液中の異物をなくしても、塗工後の製品の搬送工程で異物が粘着剤層表面についてしまう可能性があるので、クリーン度はできるだけ低い方が好ましい。クリーン度をクラス１０００以下に保つためには、工程内に持ち込むエアーをＨＥＰＡフィルターでろ過することが好ましい。また、塗工ヘッドの周囲は別室として覆うことが、周囲からの塗液中への塵芥異物汚染を抑制できるので好ましい。 Furthermore, it is preferable that the degree of cleanliness in the step of applying the pressure-sensitive adhesive coating solution is class 1000 or less. Even if there is no foreign matter in the pressure-sensitive adhesive coating solution, there is a possibility that foreign matter may adhere to the surface of the pressure-sensitive adhesive layer in the product transporting process after coating. In order to keep the cleanness at class 1000 or lower, it is preferable to filter the air brought into the process with a HEPA filter. Further, it is preferable to cover the periphery of the coating head as a separate chamber, because contamination of dust from the surroundings into the coating liquid can be suppressed.
また、塵芥は、塗工後のフィルムをスリットする際、ベースフィルムの切粉が付着することにより発生することもある。これを防止するために、スリット刃を丸刃にして一定箇所に切粉がたまらないようにしたり、スリット刃周辺を吸引して発生した切粉が表面保護用粘着フィルムに付着しないようにすることが好ましい。 Moreover, dust may be generated when chips of the base film adhere when slitting the coated film. In order to prevent this, it is necessary to make the slit blade round so that the chips do not collect at a fixed location, or to prevent the chips generated by sucking around the slit blade from adhering to the surface protective adhesive film. preferable.
次に、本発明の表面保護用粘着フィルムは、上記の粘着剤層が形成された面とは反対側の面に、帯電防止層およびその上に防汚層が形成されているか、または、防汚性と帯電防止性とを有する層が形成されている必要がある。かかる構造に積層することにより、表面保護用粘着フィルムが積層された光学フィルムを裁断した際の裁断面からはみ出す粘着剤に起因する表面汚染を抑制することができ、また、表面保護フィルムが積層された各種製品の摩擦帯電に起因するトラブルを抑制することができる。 Next, the surface protective pressure-sensitive adhesive film of the present invention has an antistatic layer and an antifouling layer formed on the surface opposite to the surface on which the pressure-sensitive adhesive layer is formed, or a A layer having soiling and antistatic properties needs to be formed. By laminating in such a structure, it is possible to suppress surface contamination caused by the pressure-sensitive adhesive protruding from the cut surface when the optical film laminated with the surface protective pressure-sensitive adhesive film is cut, and the surface protective film is laminated. Trouble caused by frictional charging of various products can be suppressed.
かかる帯電防止層は、例えば層の強度を上げるため、ポリエステルフィルムとの接着性をあげるためなど、必要に応じて熱可塑性のポリエステル樹脂、アクリル樹脂等の熱可塑性樹脂、熱硬化性のアクリル樹脂、ウレタン樹脂、メラミン樹脂、エポキシ樹脂等の熱硬化性樹脂をバインダーとして併用して帯電防止剤を含む塗液を塗布することによって形成される。好ましく用いられる帯電防止剤としては、例えば第４級アンモニウム塩、ピリジニウム塩、第１〜３級アミノ基等のカチオン性基を有する各種のカチオン性帯電防止剤、スルホン酸塩基、硫酸エステル塩基、リン酸エステル塩基、ホスホン酸塩基等のアニオン性基を有するアニオン系帯電防止剤、アミノ酸系、アミノ硫酸エステル系等の両性帯電防止剤、アミノアルコール系、グリセリン系、ポリエチレングリコール系等のノニオン性の帯電防止剤等の各種界面活性剤型帯電防止剤、さらには上記の如き帯電防止剤を高分子量化した高分子型帯電防止剤等があげられる。例えば第３級アミノ基や第４級アンモニウム基を有し、電離放射線により重合可能なモノマーやオリゴノマー、例えば、Ｎ，Ｎ−ジアルキルアミノアルキル（メタ）アクリレートモノマー、それらの第４級化合物等の重合性モノマーを構成成分として含む高分子型帯電防止剤が用いられる。 Such an antistatic layer may be, for example, a thermoplastic polyester resin, a thermoplastic resin such as an acrylic resin, a thermosetting acrylic resin, etc. It is formed by applying a coating solution containing an antistatic agent in combination with a thermosetting resin such as a urethane resin, a melamine resin, or an epoxy resin as a binder. Examples of the antistatic agent preferably used include various cationic antistatic agents having cationic groups such as quaternary ammonium salts, pyridinium salts, and primary to tertiary amino groups, sulfonate groups, sulfate ester bases, phosphorus Anionic antistatic agents having anionic groups such as acid ester bases, phosphonic acid bases, amphoteric antistatic agents such as amino acids and aminosulfate esters, nonionic charges such as amino alcohols, glycerols, and polyethylene glycols Examples thereof include various surfactant type antistatic agents such as an antistatic agent, and polymer antistatic agents obtained by increasing the molecular weight of the antistatic agent as described above. For example, polymerization of monomers and oligomers having a tertiary amino group or a quaternary ammonium group that can be polymerized by ionizing radiation, such as N, N-dialkylaminoalkyl (meth) acrylate monomers, and their quaternary compounds. A polymeric antistatic agent containing a functional monomer as a constituent component is used.
また、ポリアニリン、ポリピロール、ポリチオフェンなどの導電性ポリマーや、スズ、アンチモン系フィラー、酸化インジウム系フィラーをバインダーに分散したものも、帯電防止層として用いることができる。 In addition, a conductive polymer such as polyaniline, polypyrrole, or polythiophene, or tin, antimony filler, or indium oxide filler dispersed in a binder can also be used as the antistatic layer.
これらのなかでも、下記一般式で表される単位を主たる繰返し単位とするポリチオフェンからなる導電性ポリマー、特に対アニオンがスチレンスルホン酸が共重合されたポリスルホン酸から誘導されたポリアニオンである導電性ポリマーが好ましい。 Among these, a conductive polymer composed of polythiophene whose main repeating unit is a unit represented by the following general formula, particularly a conductive polymer whose counter anion is a polyanion derived from polysulfonic acid copolymerized with styrene sulfonic acid. Is preferred.
好ましく用いられるポリチオフェン系の導電性ポリマー（ポリカチオン状のポリチオフェンとアニオンとの塩）としては、例えば特開２００５−８８３８９号公報に記載の帯電防止層として用いられているポリチオフェン、特開２００６−２９４５３２号公報に記載されているポリチオフェンを用いることができ、具体的には、例えばポリ（３，４−エチレンジオキシチオフェン）［チオフェン環の約１／３がカチオン化されたもの］とポリスチレンスルホン酸（スルホン酸の約半分がアニオン化されたもの）との複合体をあげることができる。 Examples of the polythiophene-based conductive polymer (polycationic polythiophene and anion salt) preferably used include, for example, polythiophene used as an antistatic layer described in JP-A-2005-88389, and JP-A-2006-294532. The polythiophene described in the Japanese Patent Publication No. JP-A-2006-101 can be used. Specifically, for example, poly (3,4-ethylenedioxythiophene) [about 1/3 of the thiophene ring is cationized] and polystyrene sulfonic acid And a complex with about half of the sulfonic acid anionized.
かかる導電性ポリマーは、塗膜強度を向上させる目的で、γ−グリシドキシプロピルトリメトキシシラン、ビニルトリエトキシシランなどのアルコキシ基以外の反応性官能基を有するトリアルコキシシランを併用することができ、特にグリシドキシ基を有するトリアルコキシシランが好ましい。 Such conductive polymers can be used in combination with trialkoxysilanes having reactive functional groups other than alkoxy groups such as γ-glycidoxypropyltrimethoxysilane and vinyltriethoxysilane for the purpose of improving coating film strength. In particular, trialkoxysilane having a glycidoxy group is preferred.
また、本発明の帯電防止層には、該層の滑り性や耐ブロッキング性を良好なものとするため、滑剤として平均粒径が０．０１〜２０μｍの無機や有機の微粒子を、例えば０．００１〜５重量％の配合割合で含有させることができる。かかる微粒子の具体例としては、シリカ、アルミナ、酸化チタン、カーボンブラック、カオリン、炭酸カルシウム等の無機微粒子、ポリスチレン樹脂、架橋ポリスチレン樹脂、アクリル樹脂、架橋アクリル樹脂、メラミン樹脂粒子、シリコーン樹脂、フッ素樹脂、尿素樹脂、ベンゾグアナミン樹脂等の有機微粒子等を好ましくあげることができる。この有機微粒子は、塗膜内で微粒子の状態を保つことができる樹脂であれば、熱可塑性樹脂であっても熱硬化性樹脂であってもよく、また目的に応じた架橋度で架橋された樹脂であってもよい。 In addition, in the antistatic layer of the present invention, inorganic or organic fine particles having an average particle diameter of 0.01 to 20 μm are used as a lubricant, for example, in order to improve the slipperiness and blocking resistance of the layer. It can be contained at a blending ratio of 001 to 5% by weight. Specific examples of such fine particles include inorganic fine particles such as silica, alumina, titanium oxide, carbon black, kaolin, calcium carbonate, polystyrene resin, cross-linked polystyrene resin, acrylic resin, cross-linked acrylic resin, melamine resin particles, silicone resin, fluorine resin. Organic fine particles such as urea resin and benzoguanamine resin can be preferably mentioned. The organic fine particle may be a thermoplastic resin or a thermosetting resin as long as it is a resin capable of maintaining the fine particle state in the coating film, and has been crosslinked with a degree of crosslinking depending on the purpose. Resin may be used.
さらに、上記微粒子以外にも界面活性剤、酸化防止剤、着色剤、顔料、蛍光増白剤、可塑剤、架橋剤、有機滑剤（滑り剤）、紫外線吸収剤等を必要に応じて添加してもよい。 In addition to the above fine particles, surfactants, antioxidants, colorants, pigments, fluorescent brighteners, plasticizers, cross-linking agents, organic lubricants (slip agents), UV absorbers, etc. may be added as necessary. Also good.
本発明においては、例えば上記の成分を含む塗液、好ましくは水性塗液を用いてポリエステルフィルムに塗設することにより帯電防止層を形成する。その際、塗液の固形分濃度は１〜３０重量％が好ましく、特に２〜２０重量％が好ましい。固形分濃度がこの範囲にあると塗液の粘度を塗布に適したものにすることができる。 In the present invention, for example, an antistatic layer is formed by coating a polyester film using a coating liquid containing the above-described components, preferably an aqueous coating liquid. In that case, the solid content concentration of the coating liquid is preferably 1 to 30% by weight, particularly preferably 2 to 20% by weight. When the solid content concentration is within this range, the viscosity of the coating solution can be made suitable for coating.
ポリエステルフィルムへの塗液の塗布方法としては、公知の任意の塗布方法が適用できる。例えばロールコート法、グラビアコート法、マイクログラビアコート法、リバースコート法、ロールブラッシュ法、スプレーコート法、エアーナイフコート法、含浸法およびカーテンコート法などを単独または組み合わせて適用するとよい。 As a method for applying the coating liquid to the polyester film, any known application method can be applied. For example, a roll coating method, a gravure coating method, a micro gravure coating method, a reverse coating method, a roll brush method, a spray coating method, an air knife coating method, an impregnation method, and a curtain coating method may be applied alone or in combination.
以上に説明した帯電防止層の帯電防止性は、表面固有抵抗で１×１０５〜１×１０１２Ω／□の範囲であることが好ましい。この値が１×１０５Ω／□未満の場合には帯電防止層がもろくなるので好ましくなく、逆に１×１０１２Ω／□を超える場合には帯電防止性が不足する。 The antistatic property of the antistatic layer described above is preferably in the range of 1 × 10 5 to 1 × 10 12 Ω / □ in terms of surface specific resistance. If this value is less than 1 × 10 5 Ω / □, the antistatic layer becomes fragile, which is not preferable. Conversely, if it exceeds 1 × 10 12 Ω / □, the antistatic property is insufficient.
また帯電防止層の厚みは、０．０１〜１μｍの範囲、特に０．０２〜０．５μｍの範囲が好ましい。厚みが０．０１μｍ未満であると十分な帯電防止効果が得られないことがあり、他方１μｍを超えると耐ブロッキング性が低下することがある。 The thickness of the antistatic layer is preferably in the range of 0.01 to 1 μm, particularly preferably in the range of 0.02 to 0.5 μm. When the thickness is less than 0.01 μm, a sufficient antistatic effect may not be obtained, and when it exceeds 1 μm, the blocking resistance may be lowered.
次に、帯電防止層の上に形成される防汚層は、汚れ防止剤（防汚剤）を含む塗液を塗布することによって形成される。かかる防汚層は、適度に低い剥離力を有しているので、例えば表面保護用粘着フィルムを貼り合せた偏光板を断裁しチップ化するときに断裁面からはみ出す粘着剤が、表面保護フィルムに接触してもフィルム表面に付着しにくくさせる効果がある。 Next, the antifouling layer formed on the antistatic layer is formed by applying a coating liquid containing an antifouling agent (antifouling agent). Since such an antifouling layer has a reasonably low peeling force, for example, when a polarizing plate bonded with a surface protective adhesive film is cut into a chip, an adhesive that protrudes from the cut surface is applied to the surface protective film. Even if it contacts, there exists an effect made hard to adhere to the film surface.
ここで用いられる汚れ防止剤としては特に限定する必要はないが、例えば長鎖のアルキル側鎖を有するポリマーが好ましく、炭素数１２以上、特に１６〜２０のアルキル鎖を有するアルキルアクリレートとアクリル酸とのコポリマーが好ましい。アルキルアクリレートのアルキル鎖の炭素数が１２未満では十分な汚れ防止効果が得られないことがある。 The antifouling agent used here is not particularly limited. For example, a polymer having a long alkyl side chain is preferable, and an alkyl acrylate having 12 or more carbon atoms, particularly an alkyl chain having 16 to 20 carbon atoms, and acrylic acid. Are preferred. If the number of carbon atoms in the alkyl chain of the alkyl acrylate is less than 12, sufficient antifouling effect may not be obtained.
また長鎖のアルキル側鎖を有する別のポリマーとしては、例えばポリビニルアルコールまたはポリエチレンイミンを塩素化アルキロイルまたはアルキルイソシアネートで長鎖アルキル化した共重合体、具体的には、ポリビニルアルコールとオクタデシルイソシアネートとの反応によって得られるポリビニル−Ｎ−オクタデシルカルバメートや、ポリエチレンイミンとオクタデシルイソシアネートとの反応によって得られるポリエチレンイミン−Ｎ−オクタデシルカルバメートなどがあげられる。 Another polymer having a long alkyl side chain is, for example, a copolymer obtained by long-chain alkylating polyvinyl alcohol or polyethyleneimine with chlorinated alkyloyl or alkyl isocyanate, specifically, polyvinyl alcohol and octadecyl isocyanate. Examples thereof include polyvinyl-N-octadecyl carbamate obtained by the reaction and polyethylene imine-N-octadecyl carbamate obtained by the reaction of polyethylene imine and octadecyl isocyanate.
さらに別の汚れ防止剤としては、離形フィルム用などに通常使用されているシリコーン系やフッ素系の離形剤をあげることができる。 As another antifouling agent, silicone-based or fluorine-based release agents usually used for release films and the like can be mentioned.
かかる汚れ防止剤を含む防汚層には、層の強度、帯電防止層又はポリエステルフィルムへの密着性、耐水性、耐溶剤性、ブロッキング性などの向上のためにバインダーとして熱可塑性ポリエステル樹脂、アクリル樹脂、ポリビニル樹脂などの熱可塑性樹脂および／または熱硬化性アクリル樹脂、ウレタン樹脂、メラミン樹脂、エポキシ樹脂などの熱硬化性樹脂などの高分子を含有させることが好ましく、さらに架橋剤として、メチロール化あるいはアルキロール化したメラミン系、尿素系、グリオキザール系、アクリルアミド系などの化合物、エポキシ化合物、ポリイソシアネートから選ばれた少なくとも１種類を含有させることが特に好ましい。 The antifouling layer containing such an antifouling agent includes a thermoplastic polyester resin, acrylic as a binder for improving the strength of the layer, adhesion to the antistatic layer or polyester film, water resistance, solvent resistance, blocking property, etc. It is preferable to contain a polymer such as a thermoplastic resin such as a resin or polyvinyl resin and / or a thermosetting acrylic resin, a urethane resin, a melamine resin or an epoxy resin, and a methylol as a crosslinking agent. Alternatively, it is particularly preferable to contain at least one selected from alkylolated melamine-based, urea-based, glyoxal-based, acrylamide-based compounds, epoxy compounds, and polyisocyanates.
防汚層を形成する際の塗液の濃度、塗布方式および塗布条件などの塗布方法は、帯電防止層の塗布方法と同じ方法で実施することができる。
防汚層の厚みは０．０１〜１μｍの範囲、特に０．０３〜０．５μｍの範囲が好ましい。厚みが０．０１μｍ未満の場合にはと十分な汚れ防止効果が得られないことがあり、他方１μｍを超える層は、過剰品質であり不経済である。
The application method such as the concentration of the coating liquid, the application method and the application conditions when forming the antifouling layer can be carried out in the same manner as the application method of the antistatic layer.
The thickness of the antifouling layer is preferably in the range of 0.01 to 1 μm, particularly preferably in the range of 0.03 to 0.5 μm. When the thickness is less than 0.01 μm, a sufficient antifouling effect may not be obtained, while a layer exceeding 1 μm is excessive quality and uneconomical.
また、防汚層の剥離力は、２０〜４００ｇ／２５ｍｍの範囲、特に３０〜１５０ｇ／２５ｍｍの範囲であることが好ましい。
なお、ここでいう剥離力は、粘着テープ（日東電工株式会社製、品番；３１Ｂ）を測定面に貼り付け、３００ｍｍ／分の速度で１８０度の角度で剥離するときの力で表される。
Further, the peeling force of the antifouling layer is preferably in the range of 20 to 400 g / 25 mm, particularly in the range of 30 to 150 g / 25 mm.
The peeling force referred to here is expressed as a force when an adhesive tape (manufactured by Nitto Denko Corporation, product number: 31B) is attached to the measurement surface and peeled at an angle of 180 degrees at a speed of 300 mm / min.
本発明においては、上記のようにポリエステルフィルムの片面に帯電防止層およびその上に防汚層を設ける替わりに、ポリエステルフィルムの片面に帯電防止剤および防汚剤を同時に含有する層を形成してもよい。この場合には、ポリエステルフィルムに、帯電防止層を設けるための塗液中に前述した汚れ防止剤を含有する溶液または分散液を混合させ、これを同様の方法で塗布すればよい。その際、帯電防止剤と防汚剤との混合割合は、両者の総重量を基準として防汚剤が１０〜９０重量％、特に２０〜７０重量％の範囲が帯電防止性と防汚性とを両立させるために好ましい。 In the present invention, instead of providing an antistatic layer on one side of the polyester film and an antifouling layer thereon as described above, a layer containing an antistatic agent and an antifouling agent is formed on one side of the polyester film. Also good. In this case, the polyester film may be mixed with a solution or dispersion containing the antifouling agent described above in a coating liquid for providing an antistatic layer, and this may be applied by the same method. At that time, the mixing ratio of the antistatic agent and the antifouling agent is 10 to 90% by weight, especially 20 to 70% by weight of the antifouling agent based on the total weight of both. Is preferable in order to achieve both.
帯電防止剤と防汚剤とを含有する層は、前記帯電防止層を形成する方法と同様の方法で形成することができる。その際、厚みも０．０１〜１μｍの範囲、特に０．０２〜０．５μｍの範囲であることが好ましい。厚みが０．０１μｍ未満の場合には、十分な帯電防止効果と汚れ防止効果が得られないことがあり、他方１μｍを超える場合には、耐ブロッキング性が低下することがある。 The layer containing the antistatic agent and the antifouling agent can be formed by the same method as the method for forming the antistatic layer. At that time, the thickness is preferably in the range of 0.01 to 1 μm, particularly preferably in the range of 0.02 to 0.5 μm. When the thickness is less than 0.01 μm, sufficient antistatic effect and antifouling effect may not be obtained, while when it exceeds 1 μm, blocking resistance may be lowered.
次に、本発明で用いられるポリエステルフィルムとしては、例えばポリエチレンテレフタレート、ポリエチレンナフタレートなどからなるフィルムがあげられる。なかでも、ポリエチレンテレフタレートフィルムが好適である。また、ポリエステルフィルムは一軸延伸フィルムであっても、二軸延伸フィルムであってもよい。ポリエステルフィルムの厚みについても特に制限されるものではないが、１０〜２００μｍの範囲、特に２０〜５０μｍの範囲が適当である。 Next, examples of the polyester film used in the present invention include films made of polyethylene terephthalate, polyethylene naphthalate, and the like. Among these, a polyethylene terephthalate film is preferable. The polyester film may be a uniaxially stretched film or a biaxially stretched film. The thickness of the polyester film is not particularly limited, but a range of 10 to 200 μm, particularly 20 to 50 μm is appropriate.
以上に説明した本発明の表面保護用粘着フィルムは、例えば偏光板や画像表面装置の表面に貼付することにより、これらを検査したり搬送する際に表面にキズがつくことを防止し、また、表面に粘着剤が付着するのを防止する。さらには、表面保護を必要としなくなって剥離する際の剥離帯電が少ないので、静電気放電に起因するデバイスの破壊等のトラブル発生を抑制することができる。 The adhesive film for surface protection of the present invention described above prevents the surface from being scratched when inspecting or transporting, for example, by sticking to the surface of a polarizing plate or an image surface device, Prevents adhesive from sticking to the surface. Furthermore, since there is little peeling electrification at the time of peeling because it does not require surface protection, troubles such as device destruction due to electrostatic discharge can be suppressed.
以下、実施例をあげて本発明をさらに具体的に説明する。なお、実施例中における各評価は下記の方法にしたがった。 Hereinafter, the present invention will be described more specifically with reference to examples. In addition, each evaluation in an Example followed the following method.
（１）表面固有抵抗値
タケダ理研社製固有抵抗測定器を使用し、測定温度２３℃、測定湿度６５％ＲＨの雰囲気で、印加電圧１００Ｖで１分後の表面固有抵抗値を測定した。なお、表面固有抵抗値としては、１×１０１２Ω／□未満が好ましい。
(1) Surface resistivity value Using a resistivity meter manufactured by Takeda Riken Co., Ltd., the surface resistivity value after 1 minute was measured at an applied voltage of 100 V in an atmosphere at a measurement temperature of 23 ° C. and a measurement humidity of 65% RH. The surface specific resistance value is preferably less than 1 × 10 12 Ω / □.
（２）防汚性
表面保護用粘着フィルムを偏光板に積層し、１６インチディスプレイ用の寸法に裁断し、これを積み重ねた後に偏光板の異物検査を行い、裁断面からはみ出した粘着剤が原因で異物とカウントされた数の全異物数に対する割合を計算し、下記の基準で評価した。
○：１％未満
△：１％以上２０％未満
×：２０％以上
(2) Antifouling The surface protective adhesive film is laminated on the polarizing plate, cut into dimensions for a 16-inch display, stacked, and then inspected for foreign matter on the polarizing plate, causing the adhesive to protrude from the cut surface. The ratio of the number counted as foreign matter to the total number of foreign matters was calculated and evaluated according to the following criteria.
○: Less than 1% △: 1% or more and less than 20% ×: 20% or more
（３）剥離帯電特性
幅７０ｍｍ、長さ１００ｍｍのサイズにカットしたクリア偏光板のセパレーターを剥離した後、あらかじめ除電しておいた厚み１ｍｍ、幅７０ｍｍ、長さ１００ｍｍのガラス板にハンドローラーにて貼り合わせて被着体を作製した。偏光板表面保護フィルムを幅７０ｍｍ、長さ１３０ｍｍのサイズにカットし、あらかじめ除電しておいたクリア偏光板表面に片方の端部が３０ｍｍはみ出すようにハンドローラーにて圧着する。２３℃×５０％ＲＨの環境下に一日放置した後、３０ｍｍはみ出した片方の端部を自動巻取り機に固定し、剥離角度１５０°、剥離速度１０ｍ／ｍｉｎとなるように剥離する。このときに発生する偏光板表面の電位を高さ１００ｍｍの位置に固定してある電位測定機［春日電機（株）社製、ＫＳＤ−０１０３］にて測定した。測定は、２３℃×５０％ＲＨの環境下で行った。
○：０．１ｋＶ以下
△：０．２ｋＶ未満
×：０．２ｋＶ以上
(3) Peeling and charging characteristics After peeling off the separator of the clear polarizing plate cut to a size of 70 mm in width and 100 mm in length, a glass plate with a thickness of 1 mm, a width of 70 mm, and a length of 100 mm that had been previously charged with a hand roller The adherend was produced by bonding. The polarizing plate surface protective film is cut to a size of 70 mm in width and 130 mm in length, and is pressure-bonded with a hand roller so that one end protrudes 30 mm from the surface of the clear polarizing plate which has been neutralized beforehand. After being left in an environment of 23 ° C. × 50% RH for one day, one end protruding 30 mm is fixed to an automatic winder and peeled so that a peeling angle is 150 ° and a peeling speed is 10 m / min. The potential of the polarizing plate surface generated at this time was measured with a potential measuring device (KSD-0103, manufactured by Kasuga Denki Co., Ltd.) fixed at a height of 100 mm. The measurement was performed in an environment of 23 ° C. × 50% RH.
○: 0.1 kV or less Δ: Less than 0.2 kV ×: 0.2 kV or more
（４）異物個数の測定
表面保護用粘着フィルムをＡ４サイズの偏光板に貼り付ける。貼り付けた偏光板保護フィルム全範囲をクロスニコル法にて目視検査して異物検査を行う。検査はサンプル枚数３０枚について行い、その結果を用い、１平方メートル当たりの異物に換算する。
○：１５０μｍ以上の異物がなく、１５０μｍ未満で７５μｍ以上の異物が１個以下
△：１５０μｍ以上の異物がなく、１５０μｍ未満で７５μｍ以上の異物が５個以下
×：１５０μｍ以上の異物があるもしくは、１５０μｍ未満で７５μｍ以上の異物が６個以上
(4) Measurement of the number of foreign matters A surface protective adhesive film is attached to an A4 size polarizing plate. The entire range of the attached polarizing plate protective film is visually inspected by the crossed Nicols method to perform foreign matter inspection. The inspection is performed on 30 samples, and the result is converted into foreign matter per square meter.
○: No foreign matter of 150 μm or more, 1 foreign substance of 75 μm or more less than 150 μm Δ: No foreign substance of 150 μm or more, and 5 foreign substances of 75 μm or more of less than 150 μm X: 150 μm or more 6 or more foreign objects less than 150μm and 75μm or more
［実施例１］
厚み３８μｍのポリエチレンテレフタレートフィルムの片面に、ポリ（３，４−エチレンジオキシチオフェン）（数平均分子量が１２，６００、チオフェン環の１／３がカチオン化）１５重量部にポリスチレンスルホン酸（数平均分子量が３８，７００、スルホン酸の４０モル％がアニオン化）を２５重量部混合した帯電防止剤（導電性ポリマー：Ｍ１）、ジカルボン酸成分としてテレフタル酸５４モル％、イソフタル酸３７モル％、アジピン酸５モル％および５−Ｎａスルホイソフタル酸４モル％、グリコール成分としてエチレングリコール９２モル％、ジエチレングリコール５モル％、１，４−ブタンジオール３モル％を用いて得られた共重合ポリエステル樹脂［Ｍ２］（Ｔｇ５９℃、数平均分子量２０，６６０）、ならびに脂肪族系のノニオン系界面活性剤［Ｍ３］からなる組成物（重量比；Ｍ１／Ｍ２／Ｍ３＝３０／７０／１０）の５重量％水性塗液をグラビアコーターで塗布した。次いで、１４０℃で乾燥して帯電防止層の厚みが０．１２μｍの積層フィルムを作成した。
[Example 1]
Poly (3,4-ethylenedioxythiophene) (number average molecular weight 12,600, 1/3 of the thiophene ring is cationized) 15 parts by weight of polystyrene sulfonic acid (number average) on one side of a 38 μm thick polyethylene terephthalate film Antistatic agent (conductive polymer: M1) mixed with 25 parts by weight of a molecular weight of 38,700 and 40 mol% of sulfonic acid), terephthalic acid as a dicarboxylic acid component, 54 mol%, isophthalic acid 37 mol%, adipine Copolymerized polyester resin obtained using 5 mol% of acid and 4 mol% of 5-Na sulfoisophthalic acid, 92 mol% of ethylene glycol, 5 mol% of diethylene glycol and 3 mol% of 1,4-butanediol as the glycol component [M2 ] (Tg 59 ° C., number average molecular weight 20,660), and aliphatic Was 5% by weight aqueous coating solution was coated by a gravure coater; anion surfactant [M3] comprising the composition (M1 / M2 / M3 = 30/70/10 by weight). Subsequently, it dried at 140 degreeC and the laminated film whose thickness of an antistatic layer is 0.12 micrometer was created.
この帯電防止層の上に、防汚層として、ポリエチレンイミンオクタデシルカルバメート（日本触媒株式会社製、ＲＰ−２０）２０部（固形分重量部）、ポリエステル樹脂（日立化成工業株式会社製、エスペル１５１０）６０部（固形分重量部）、およびメラミン樹脂（三和ケミカル株式会社製、ニカラックＮＳ−１１）２０部（固形分重量部）を混合して得られた塗工液を、グラビアコーターを用いて塗布し、１５０℃、３０秒間塗膜を乾燥・硬化させ、厚み０．３μｍの汚れ防止層を設けた。 On this antistatic layer, as an antifouling layer, 20 parts of polyethyleneimine octadecyl carbamate (manufactured by Nippon Shokubai Co., Ltd., RP-20) (parts by weight of solids), polyester resin (manufactured by Hitachi Chemical Co., Ltd., Espel 1510) Using a gravure coater, a coating liquid obtained by mixing 60 parts (solid part by weight) and 20 parts (solid part by weight) of melamine resin (manufactured by Sanwa Chemical Co., Ltd., Nicarac NS-11). The coating was dried and cured at 150 ° C. for 30 seconds to provide a 0.3 μm thick antifouling layer.
次いで、この帯電防止層および防汚層を設けた面とは反対側の面に、以下のごとくして粘着剤層を設けた。すなわち、親水性基を持つアクリル成分として、アクリル酸２エチルヘキシルを５０モルとアクリル酸ジエチレングリコールエステル５０モルとを共重合させた重量平均分子量４０万のアクリルポリマーをトルエンで４０％に希釈し、これに架橋剤としてヘキサメチレンジイソシアネートをアクリルポリマー１００重量部に対して２重量部添加し、さらに帯電防止剤として常温で液体であり１−へキシル−３−メチルピリジニウムカチオンとカウンターイオンとしての６フッ化リンとからなるカチオン系帯電防止剤を２重量部添加してアクリル系粘着剤を得た。この粘着剤を、加圧脱泡したのち、２０μｍの目開きの糸巻きフィルターおよび１０μｍの糸巻きフィルターの２段でろ過した後、塗工ヘッド周りを別室に隔離した場所でグラビアコーターを用いて塗布し、１００℃、２分間塗膜を乾燥・硬化させ、厚み１５μｍの粘着剤層を設け、表面保護用粘着フィルムを作成した。さらに、この表面保護用粘着フィルムを規定サイズにスリットした。この時切粉防止としてスリット刃に吸引装置を設けて切粉が表面保護フィルムにつかないようにした。この時工程内はＨＥＰＡフィルターで集塵されたエアーが供給されておりクリーン度は塗工ヘッド周辺はクラス１００、それ以外の工程はクラス１０００であった。この表面保護用粘着フィルムの特性を表１に示す。 Next, an adhesive layer was provided on the surface opposite to the surface on which the antistatic layer and the antifouling layer were provided as follows. That is, as an acrylic component having a hydrophilic group, an acrylic polymer having a weight average molecular weight of 400,000 obtained by copolymerizing 50 mol of 2-ethylhexyl acrylate and 50 mol of diethylene glycol ester is diluted to 40% with toluene. 2 parts by weight of hexamethylene diisocyanate is added as a cross-linking agent to 100 parts by weight of the acrylic polymer, and 1-hexyl-3-methylpyridinium cation and phosphorus hexafluoride as a counter ion are liquid at room temperature as an antistatic agent. An acrylic pressure-sensitive adhesive was obtained by adding 2 parts by weight of a cationic antistatic agent consisting of After this pressure-sensitive adhesive is degassed under pressure, it is filtered through two stages of a 20 μm aperture spool filter and a 10 μm spool filter, and then applied using a gravure coater in a place where the area around the coating head is isolated in a separate room. The coating film was dried and cured at 100 ° C. for 2 minutes, a pressure-sensitive adhesive layer having a thickness of 15 μm was provided, and an adhesive film for surface protection was prepared. Furthermore, this surface protective adhesive film was slit to a prescribed size. At this time, a suction device was provided on the slit blade to prevent chips from sticking to the surface protection film. At this time, air collected by the HEPA filter was supplied in the process, and the cleanliness was class 100 around the coating head and class 1000 in the other processes. Table 1 shows the characteristics of this surface protective adhesive film.
［実施例２］
粘着剤層に用いた帯電防止剤に替えて、常温で液体の１，３−ジメチルイミダゾリウムカチオンとカウンターイオンとしての６フッ化リンからなる帯電防止剤を２重量部添加する以外は全て実施例１と同様にして表面保護用粘着フィルムを得た。この評価結果を表１に示す。
[Example 2]
All the examples except that 2 parts by weight of an antistatic agent composed of 1,3-dimethylimidazolium cation which is liquid at room temperature and phosphorus hexafluoride as a counter ion is added in place of the antistatic agent used in the adhesive layer In the same manner as in No. 1, an adhesive film for surface protection was obtained. The evaluation results are shown in Table 1.
［実施例３］
親水性基を有するアクリルポリマーとして、アクリル酸２エチルヘキシル５０モルと、アクリル酸エチレングリコールエステル５０モルとを共重合させた重量平均分子量４０万のアクリルポリマーを使用する以外は全て実施例１と同様にして表面保護用粘着フィルムを得た。この評価結果を表１に示す。
[Example 3]
Except for using an acrylic polymer having a weight average molecular weight of 400,000 obtained by copolymerizing 50 mol of 2-ethylhexyl acrylate and 50 mol of ethylene glycol acrylate as the acrylic polymer having a hydrophilic group, the same procedure as in Example 1 was performed. Thus, an adhesive film for surface protection was obtained. The evaluation results are shown in Table 1.
［実施例４］
親水性基を有するアクリルポリマーとして、アクリル酸２エチルヘキシルを５０モル、アクリル酸グリシジルを５０モル共重合させて得た重量平均分子量４０万のアクリルポリマーを使用する以外は全て実施例１と同様にして表面保護用粘着フィルムを得た。この評価結果を表１に示す。
[Example 4]
Except using an acrylic polymer having a weight average molecular weight of 400,000 obtained by copolymerizing 50 mol of 2-ethylhexyl acrylate and 50 mol of glycidyl acrylate as an acrylic polymer having a hydrophilic group, the same procedure as in Example 1 was carried out. An adhesive film for surface protection was obtained. The evaluation results are shown in Table 1.
［実施例５、６］
親水性基を有するアクリルポリマーとして、アクリル酸２エチルヘキシルと、アクリル酸ジエチレングリコールエステルの共重合割合を表１に示すように変更する以外は全て実施例１と同様にして表面保護用粘着フィルムを得た。この評価結果を表１に示す。
[Examples 5 and 6]
As an acrylic polymer having a hydrophilic group, a surface protective adhesive film was obtained in the same manner as in Example 1 except that the copolymerization ratio of 2-ethylhexyl acrylate and diethylene glycol acrylate was changed as shown in Table 1. . The evaluation results are shown in Table 1.
［比較例１］
粘着剤層に帯電防止剤を添加しない以外は全て実施例１と同様にして表面保護用粘着フィルムを得た。この評価結果を表１に示す。
[Comparative Example 1]
A surface-protective pressure-sensitive adhesive film was obtained in the same manner as in Example 1 except that no antistatic agent was added to the pressure-sensitive adhesive layer. The evaluation results are shown in Table 1.
［比較例２］
親水性基を有するアクリルポリマーに替えて、アクリル酸２エチルヘキシルが１００モルである親水性基を有していないアクリルポリマーを用いる以外は全て実施例１と同様にして表面保護用粘着フィルムを得た。この評価結果を表１に示す。
[Comparative Example 2]
A surface-protective pressure-sensitive adhesive film was obtained in the same manner as in Example 1 except that an acrylic polymer having no hydrophilic group in which 2 ethylhexyl acrylate was 100 mol was used instead of the acrylic polymer having a hydrophilic group. . The evaluation results are shown in Table 1.
［実施例７］
粘着剤層を塗工形成前に塗液をフィルターでろ過しない以外は全て実施例１と同様にして表面保護用粘着フィルムを得た。この評価結果を表１に示す。
[Example 7]
A surface-protective pressure-sensitive adhesive film was obtained in the same manner as in Example 1 except that the coating liquid was not filtered through a filter before coating the pressure-sensitive adhesive layer. The evaluation results are shown in Table 1.
［実施例８］
ＨＥＰＡフィルターを使用せずに空調を実施したこと以外は全て実施例１と同様にして表面保護用粘着フィルムを得た。この評価結果を表１に示す。
[Example 8]
A surface protective adhesive film was obtained in the same manner as in Example 1 except that air conditioning was performed without using a HEPA filter. The evaluation results are shown in Table 1.
［実施例９］
粘着剤層に用いた帯電防止剤に替えて、カチオン性の界面活性剤である、ジアルキルアンモニウム クロライド（ライオン株式会社製アーカード20-75I）帯電防止剤を２重量部添加する以外は全て実施例１と同様にして表面保護用粘着フィルムを得た。この評価結果を表１に示す。
[Example 9]
Example 1 except that 2 parts by weight of an antistatic agent, dialkylammonium chloride (Lion Co., Ltd. ARCARD 20-75I), which is a cationic surfactant, was added in place of the antistatic agent used in the adhesive layer. In the same manner as above, an adhesive film for surface protection was obtained. The evaluation results are shown in Table 1.
以上に説明した本発明の表面保護用粘着フィルムは、粘着層として親水性基を有するアクリル系ポリマー中に帯電防止剤、特にイオン性の帯電防止剤を含有させたものから形成されているので、粘着性を損なうことなく剥離帯電が抑制されている。したがって、例えば偏光板を初め、液晶ディスプレイ、有機ＥＬディスプレイ、プラズマディスプレイなどの表面保護用として好適に使用することができる。 The adhesive film for surface protection of the present invention described above is formed from an antistatic agent, particularly an ionic antistatic agent contained in an acrylic polymer having a hydrophilic group as an adhesive layer. The peeling electrification is suppressed without impairing the adhesiveness. Therefore, for example, it can be suitably used for surface protection of a polarizing plate, a liquid crystal display, an organic EL display, a plasma display, and the like.
Claims (9)
該親水性基を有するアクリル系ポリマーが、アルキル基の炭素数が１〜１４であるアルキル（メタ）アクリレートと、共重合割合として２０モル％以上の、親水性基を有する（メタ）アクリル酸から誘導される（メタ）アクリルモノマーとの共重合体である
ことを特徴とする表面保護用粘着フィルム。 A pressure-sensitive adhesive for surface protection in which a pressure-sensitive adhesive layer is formed on one side of the polyester film and an antistatic layer and an antifouling layer are formed on the other side, or a layer having antifouling properties and antistatic properties is formed. A film, wherein the pressure-sensitive adhesive layer is formed from an acrylic pressure-sensitive adhesive containing an acrylic polymer having a hydrophilic group and an antistatic agent ,
The acrylic polymer having a hydrophilic group is composed of an alkyl (meth) acrylate having an alkyl group having 1 to 14 carbon atoms and a (meth) acrylic acid having a hydrophilic group having a copolymerization ratio of 20 mol% or more. A pressure-sensitive adhesive film for surface protection, which is a copolymer with a derived (meth) acrylic monomer .
（但し、Ｒは水素原子、炭化水素基またはアシル基を示し、ｎは１以上の整数を示す。） Hydrophilic groups in the acrylic polymer having a hydrophilic group, - (OCH 2 CH 2) n surface protecting adhesive film according to any one of claims 1 to 3 OR a is.
(However, R represents a hydrogen atom, a hydrocarbon group or an acyl group, and n represents an integer of 1 or more.)
粘着フィルム。 The pressure-sensitive adhesive film for surface protection according to any one of claims 1 to 6, which is used for surface protection of a polarizing plate.
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| JP2007043670A JP4971826B2 (en) | 2007-02-23 | 2007-02-23 | Surface protective adhesive film |
| TW097104913A TWI434765B (en) | 2007-02-23 | 2008-02-12 | Surface protection with adhesive film |
| KR1020080015661A KR101415394B1 (en) | 2007-02-23 | 2008-02-21 | Adhesive film for surface protection |
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| KR101198929B1 (en) * | 2007-06-27 | 2012-11-07 | 광 석 서 | Pressure sensitive adhesive composition with improved peeling characteristics and protection films using the same |
| JP5393393B2 (en) * | 2008-10-21 | 2014-01-22 | 日本合成化学工業株式会社 | Adhesive composition and pressure-sensitive adhesive, and pressure-sensitive adhesive for optical members, and optical member with a pressure-sensitive adhesive layer obtained using the same |
| JP5523052B2 (en) * | 2008-10-29 | 2014-06-18 | 日本合成化学工業株式会社 | A pressure-sensitive adhesive, a pressure-sensitive adhesive sheet using the same, a pressure-sensitive adhesive for temporary surface protection, a pressure-sensitive adhesive sheet for temporary surface protection using the same, and a method for using the pressure-sensitive adhesive sheet for temporary surface protection. |
| JP5490445B2 (en) * | 2009-06-05 | 2014-05-14 | 日東電工株式会社 | Adhesive optical film, production method and image display device thereof, and adhesive coating liquid and production method thereof |
| CN102472855B (en) * | 2009-07-01 | 2014-11-05 | 旭硝子株式会社 | Method for producing article having fine recessed and projected structure on surface, and method for producing wire grid polarizer |
| JPWO2012042665A1 (en) * | 2010-10-01 | 2014-02-03 | リケンテクノス株式会社 | Adhesive composition, coating composition, primer using the same, inkjet ink, adhesion method and laminate |
| WO2012042670A1 (en) * | 2010-10-01 | 2012-04-05 | リケンテクノス株式会社 | Adhesive composition, coating composition, adhesive method, and laminate |
| JP5723618B2 (en) * | 2011-02-04 | 2015-05-27 | 日東電工株式会社 | Adhesive sheet and surface protective film |
| JP5749076B2 (en) * | 2011-05-19 | 2015-07-15 | 藤森工業株式会社 | Surface protective film and optical component to which it is attached |
| JP2013163783A (en) * | 2012-02-13 | 2013-08-22 | Fujimori Kogyo Co Ltd | Adhesive composition, adhesive film and surface-protecting film |
| JP5882774B2 (en) * | 2012-02-13 | 2016-03-09 | 藤森工業株式会社 | Adhesive composition, adhesive film and surface protective film |
| JP5946668B2 (en) * | 2012-03-23 | 2016-07-06 | 清水建設株式会社 | Epoxy resin coating flooring |
| JP5909137B2 (en) * | 2012-04-05 | 2016-04-26 | 藤森工業株式会社 | Adhesive composition and surface protective film |
| JP6174847B2 (en) * | 2012-07-27 | 2017-08-02 | 藤森工業株式会社 | Surface protection film |
| US20140061610A1 (en) | 2012-08-31 | 2014-03-06 | Hyo-Young MUN | Organic light emitting device and manufacturing method thereof |
| JP6199828B2 (en) * | 2014-08-14 | 2017-09-20 | 藤森工業株式会社 | Surface protective film and optical component on which it is bonded |
| JP2018172473A (en) * | 2017-03-31 | 2018-11-08 | リンテック株式会社 | Adhesive film for display protection |
| JP6970169B2 (en) * | 2018-06-26 | 2021-11-24 | 藤森工業株式会社 | Surface protective film for optical film |
| JP6896120B2 (en) * | 2018-08-28 | 2021-06-30 | 藤森工業株式会社 | Adhesive film and surface protection film |
| JP6757831B2 (en) * | 2019-07-17 | 2020-09-23 | 藤森工業株式会社 | Surface protective film and optical members |
| JP7238072B2 (en) * | 2019-07-17 | 2023-03-13 | 藤森工業株式会社 | Surface protection film and optical member |
| JP6971368B2 (en) * | 2019-07-17 | 2021-11-24 | 藤森工業株式会社 | Surface protective film and optical members |
| CN110556331B (en) * | 2019-09-19 | 2023-03-14 | 苏州芯慧联半导体科技有限公司 | Composite material and manufacturing method of electrostatic chuck using same |
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| JPH10337823A (en) * | 1997-04-11 | 1998-12-22 | Lintec Corp | Base material and pressure sensitive adhesive tape using the material |
| JP4014280B2 (en) * | 1998-03-13 | 2007-11-28 | 帝人株式会社 | Surface protection film |
| JP2000168016A (en) * | 1998-12-10 | 2000-06-20 | Mitsubishi Polyester Film Copp | Liquid crystal display surface protective film |
| JP2001151896A (en) * | 1999-11-29 | 2001-06-05 | Nippon Zeon Co Ltd | Method for producing copolymer particle treated for preventing mutual attachment |
| JP4768099B2 (en) * | 2000-02-08 | 2011-09-07 | 帝人株式会社 | Film roll |
| JP3350518B2 (en) * | 2000-08-11 | 2002-11-25 | コニシ株式会社 | Aqueous adhesive composition |
| JP4781541B2 (en) * | 2001-02-05 | 2011-09-28 | 日東電工株式会社 | Adhesive composition and adhesive sheet |
| JP3996800B2 (en) * | 2002-05-08 | 2007-10-24 | 藤森工業株式会社 | Surface protective film and laminate using the same |
| JP2005066919A (en) * | 2003-08-21 | 2005-03-17 | Teijin Dupont Films Japan Ltd | Surface protective film |
| JP2005125659A (en) * | 2003-10-24 | 2005-05-19 | Nitto Denko Corp | Surface protecting film |
| KR101164017B1 (en) * | 2004-09-29 | 2012-07-18 | 도레이 카부시키가이샤 | Layered film |
| JP4907075B2 (en) * | 2004-10-28 | 2012-03-28 | 日東電工株式会社 | Surface protective film for optical film |
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| JP2008207356A (en) | 2008-09-11 |
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