KR101596212B1 - Adhesive film for removing optical clear adhesives, method for preparing the same, and remove method of optical clear adhesives on touch screen panel - Google Patents
Adhesive film for removing optical clear adhesives, method for preparing the same, and remove method of optical clear adhesives on touch screen panel Download PDFInfo
- Publication number
- KR101596212B1 KR101596212B1 KR1020150060216A KR20150060216A KR101596212B1 KR 101596212 B1 KR101596212 B1 KR 101596212B1 KR 1020150060216 A KR1020150060216 A KR 1020150060216A KR 20150060216 A KR20150060216 A KR 20150060216A KR 101596212 B1 KR101596212 B1 KR 101596212B1
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- KR
- South Korea
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- oca
- acrylate
- adhesive film
- parts
- Prior art date
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- 230000001070 adhesive effect Effects 0.000 title claims abstract description 45
- 239000000853 adhesive Substances 0.000 title claims abstract description 44
- 230000003287 optical effect Effects 0.000 title claims abstract description 31
- 239000002313 adhesive film Substances 0.000 title claims description 31
- 238000000034 method Methods 0.000 title claims description 24
- 239000011347 resin Substances 0.000 claims abstract description 42
- 229920005989 resin Polymers 0.000 claims abstract description 42
- 239000000203 mixture Substances 0.000 claims abstract description 40
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 31
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 26
- 239000006059 cover glass Substances 0.000 claims abstract description 13
- 239000007822 coupling agent Substances 0.000 claims abstract description 9
- 239000000654 additive Substances 0.000 claims abstract description 8
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910000077 silane Inorganic materials 0.000 claims abstract description 6
- 239000003431 cross linking reagent Substances 0.000 claims description 24
- 239000003999 initiator Substances 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 9
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 9
- 239000004925 Acrylic resin Substances 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 8
- 239000003963 antioxidant agent Substances 0.000 claims description 8
- 230000003078 antioxidant effect Effects 0.000 claims description 8
- XOJWAAUYNWGQAU-UHFFFAOYSA-N 4-(2-methylprop-2-enoyloxy)butyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCCOC(=O)C(C)=C XOJWAAUYNWGQAU-UHFFFAOYSA-N 0.000 claims description 6
- 239000003086 colorant Substances 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 5
- 239000004014 plasticizer Substances 0.000 claims description 5
- 239000004094 surface-active agent Substances 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 2
- NBXZNTLFQLUFES-UHFFFAOYSA-N triethoxy(propyl)silane Chemical compound CCC[Si](OCC)(OCC)OCC NBXZNTLFQLUFES-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 8
- 239000010410 layer Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000003213 activating effect Effects 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 210000004072 lung Anatomy 0.000 abstract 1
- -1 4-morpholinophenyl Chemical group 0.000 description 30
- 238000000576 coating method Methods 0.000 description 21
- 239000011248 coating agent Substances 0.000 description 20
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 17
- 229920000139 polyethylene terephthalate Polymers 0.000 description 13
- 239000005020 polyethylene terephthalate Substances 0.000 description 13
- 238000001723 curing Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- PSGCQDPCAWOCSH-UHFFFAOYSA-N (4,7,7-trimethyl-3-bicyclo[2.2.1]heptanyl) prop-2-enoate Chemical compound C1CC2(C)C(OC(=O)C=C)CC1C2(C)C PSGCQDPCAWOCSH-UHFFFAOYSA-N 0.000 description 8
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 7
- 239000012790 adhesive layer Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- ISAOCJYIOMOJEB-UHFFFAOYSA-N desyl alcohol Natural products C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 5
- 239000011342 resin composition Substances 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
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- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 4
- 244000028419 Styrax benzoin Species 0.000 description 4
- 235000000126 Styrax benzoin Nutrition 0.000 description 4
- 235000008411 Sumatra benzointree Nutrition 0.000 description 4
- 238000003848 UV Light-Curing Methods 0.000 description 4
- 229960002130 benzoin Drugs 0.000 description 4
- 235000019382 gum benzoic Nutrition 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- LMGYOBQJBQAZKC-UHFFFAOYSA-N 1-(2-ethylphenyl)-2-hydroxy-2-phenylethanone Chemical compound CCC1=CC=CC=C1C(=O)C(O)C1=CC=CC=C1 LMGYOBQJBQAZKC-UHFFFAOYSA-N 0.000 description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 3
- MPIAGWXWVAHQBB-UHFFFAOYSA-N [3-prop-2-enoyloxy-2-[[3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propoxy]methyl]-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C MPIAGWXWVAHQBB-UHFFFAOYSA-N 0.000 description 3
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 3
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical group C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 3
- 239000012965 benzophenone Substances 0.000 description 3
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- AZQGFVRDZTUHBU-UHFFFAOYSA-N isocyanic acid;triethoxy(propyl)silane Chemical compound N=C=O.CCC[Si](OCC)(OCC)OCC AZQGFVRDZTUHBU-UHFFFAOYSA-N 0.000 description 3
- PWCBSPFFLHCDKT-UHFFFAOYSA-N (2,6-dimethoxyphenyl)-(2,4,4-trimethylpentylphosphonoyl)methanone Chemical compound COC1=CC=CC(OC)=C1C(=O)P(=O)CC(C)CC(C)(C)C PWCBSPFFLHCDKT-UHFFFAOYSA-N 0.000 description 2
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 description 2
- VOBUAPTXJKMNCT-UHFFFAOYSA-N 1-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound CCCCCC(OC(=O)C=C)OC(=O)C=C VOBUAPTXJKMNCT-UHFFFAOYSA-N 0.000 description 2
- MDKSQNHUHMMKPP-UHFFFAOYSA-N 2,5-bis(4-methoxyphenyl)-4-phenyl-1h-imidazole Chemical class C1=CC(OC)=CC=C1C1=NC(C=2C=CC=CC=2)=C(C=2C=CC(OC)=CC=2)N1 MDKSQNHUHMMKPP-UHFFFAOYSA-N 0.000 description 2
- NSWNXQGJAPQOID-UHFFFAOYSA-N 2-(2-chlorophenyl)-4,5-diphenyl-1h-imidazole Chemical class ClC1=CC=CC=C1C1=NC(C=2C=CC=CC=2)=C(C=2C=CC=CC=2)N1 NSWNXQGJAPQOID-UHFFFAOYSA-N 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- LEJBBGNFPAFPKQ-UHFFFAOYSA-N 2-(2-prop-2-enoyloxyethoxy)ethyl prop-2-enoate Chemical compound C=CC(=O)OCCOCCOC(=O)C=C LEJBBGNFPAFPKQ-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- XFCMNSHQOZQILR-UHFFFAOYSA-N 2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOC(=O)C(C)=C XFCMNSHQOZQILR-UHFFFAOYSA-N 0.000 description 2
- INQDDHNZXOAFFD-UHFFFAOYSA-N 2-[2-(2-prop-2-enoyloxyethoxy)ethoxy]ethyl prop-2-enoate Chemical compound C=CC(=O)OCCOCCOCCOC(=O)C=C INQDDHNZXOAFFD-UHFFFAOYSA-N 0.000 description 2
- HCLJOFJIQIJXHS-UHFFFAOYSA-N 2-[2-[2-(2-prop-2-enoyloxyethoxy)ethoxy]ethoxy]ethyl prop-2-enoate Chemical compound C=CC(=O)OCCOCCOCCOCCOC(=O)C=C HCLJOFJIQIJXHS-UHFFFAOYSA-N 0.000 description 2
- 125000004182 2-chlorophenyl group Chemical group [H]C1=C([H])C(Cl)=C(*)C([H])=C1[H] 0.000 description 2
- VZMLJEYQUZKERO-UHFFFAOYSA-N 2-hydroxy-1-(2-methylphenyl)-2-phenylethanone Chemical compound CC1=CC=CC=C1C(=O)C(O)C1=CC=CC=C1 VZMLJEYQUZKERO-UHFFFAOYSA-N 0.000 description 2
- BQZJOQXSCSZQPS-UHFFFAOYSA-N 2-methoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OC)C(=O)C1=CC=CC=C1 BQZJOQXSCSZQPS-UHFFFAOYSA-N 0.000 description 2
- AXYQEGMSGMXGGK-UHFFFAOYSA-N 2-phenoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(=O)C(C=1C=CC=CC=1)OC1=CC=CC=C1 AXYQEGMSGMXGGK-UHFFFAOYSA-N 0.000 description 2
- UUEWCQRISZBELL-UHFFFAOYSA-N 3-trimethoxysilylpropane-1-thiol Chemical compound CO[Si](OC)(OC)CCCS UUEWCQRISZBELL-UHFFFAOYSA-N 0.000 description 2
- VVBLNCFGVYUYGU-UHFFFAOYSA-N 4,4'-Bis(dimethylamino)benzophenone Chemical compound C1=CC(N(C)C)=CC=C1C(=O)C1=CC=C(N(C)C)C=C1 VVBLNCFGVYUYGU-UHFFFAOYSA-N 0.000 description 2
- NPFYZDNDJHZQKY-UHFFFAOYSA-N 4-Hydroxybenzophenone Chemical compound C1=CC(O)=CC=C1C(=O)C1=CC=CC=C1 NPFYZDNDJHZQKY-UHFFFAOYSA-N 0.000 description 2
- XHLKOHSAWQPOFO-UHFFFAOYSA-N 5-phenyl-1h-imidazole Chemical class N1C=NC=C1C1=CC=CC=C1 XHLKOHSAWQPOFO-UHFFFAOYSA-N 0.000 description 2
- JTHZUSWLNCPZLX-UHFFFAOYSA-N 6-fluoro-3-methyl-2h-indazole Chemical compound FC1=CC=C2C(C)=NNC2=C1 JTHZUSWLNCPZLX-UHFFFAOYSA-N 0.000 description 2
- MTRFEWTWIPAXLG-UHFFFAOYSA-N 9-phenylacridine Chemical compound C1=CC=CC=C1C1=C(C=CC=C2)C2=NC2=CC=CC=C12 MTRFEWTWIPAXLG-UHFFFAOYSA-N 0.000 description 2
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 2
- ARNIZPSLPHFDED-UHFFFAOYSA-N [4-(dimethylamino)phenyl]-(4-methoxyphenyl)methanone Chemical compound C1=CC(OC)=CC=C1C(=O)C1=CC=C(N(C)C)C=C1 ARNIZPSLPHFDED-UHFFFAOYSA-N 0.000 description 2
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 2
- 239000012964 benzotriazole Substances 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000000539 dimer Substances 0.000 description 2
- KHAYCTOSKLIHEP-UHFFFAOYSA-N docosyl prop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCCCCCOC(=O)C=C KHAYCTOSKLIHEP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- QPJVMBTYPHYUOC-UHFFFAOYSA-N methyl benzoate Chemical compound COC(=O)C1=CC=CC=C1 QPJVMBTYPHYUOC-UHFFFAOYSA-N 0.000 description 2
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- 238000002156 mixing Methods 0.000 description 2
- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 2
- FDPIMTJIUBPUKL-UHFFFAOYSA-N pentan-3-one Chemical compound CCC(=O)CC FDPIMTJIUBPUKL-UHFFFAOYSA-N 0.000 description 2
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- MLMVPBFKPWONNM-UHFFFAOYSA-N prop-2-enoic acid;urea Chemical compound NC(N)=O.OC(=O)C=C MLMVPBFKPWONNM-UHFFFAOYSA-N 0.000 description 2
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 2
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 description 2
- BEYOMQWTUYTTDL-UHFFFAOYSA-N (4-hydroxy-4-methoxycyclohexa-1,5-dien-1-yl)-phenylmethanone Chemical compound C1=CC(OC)(O)CC=C1C(=O)C1=CC=CC=C1 BEYOMQWTUYTTDL-UHFFFAOYSA-N 0.000 description 1
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- 239000012956 1-hydroxycyclohexylphenyl-ketone Substances 0.000 description 1
- KWVGIHKZDCUPEU-UHFFFAOYSA-N 2,2-dimethoxy-2-phenylacetophenone Chemical compound C=1C=CC=CC=1C(OC)(OC)C(=O)C1=CC=CC=C1 KWVGIHKZDCUPEU-UHFFFAOYSA-N 0.000 description 1
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- XIOGJAPOAUEYJO-UHFFFAOYSA-N 2-(2-methoxyphenyl)-4,5-diphenyl-1h-imidazole Chemical class COC1=CC=CC=C1C1=NC(C=2C=CC=CC=2)=C(C=2C=CC=CC=2)N1 XIOGJAPOAUEYJO-UHFFFAOYSA-N 0.000 description 1
- SNFCQJAJPFWBDJ-UHFFFAOYSA-N 2-(4-methoxyphenyl)-4,5-diphenyl-1h-imidazole Chemical class C1=CC(OC)=CC=C1C1=NC(C=2C=CC=CC=2)=C(C=2C=CC=CC=2)N1 SNFCQJAJPFWBDJ-UHFFFAOYSA-N 0.000 description 1
- IYAZLDLPUNDVAG-UHFFFAOYSA-N 2-(benzotriazol-2-yl)-4-(2,4,4-trimethylpentan-2-yl)phenol Chemical compound CC(C)(C)CC(C)(C)C1=CC=C(O)C(N2N=C3C=CC=CC3=N2)=C1 IYAZLDLPUNDVAG-UHFFFAOYSA-N 0.000 description 1
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- LTHJXDSHSVNJKG-UHFFFAOYSA-N 2-[2-[2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethoxy]ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOCCOCCOC(=O)C(C)=C LTHJXDSHSVNJKG-UHFFFAOYSA-N 0.000 description 1
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- 101001045744 Sus scrofa Hepatocyte nuclear factor 1-beta Proteins 0.000 description 1
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 description 1
- GCNKJQRMNYNDBI-UHFFFAOYSA-N [2-(hydroxymethyl)-2-(2-methylprop-2-enoyloxymethyl)butyl] 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC(CO)(CC)COC(=O)C(C)=C GCNKJQRMNYNDBI-UHFFFAOYSA-N 0.000 description 1
- TUOBEAZXHLTYLF-UHFFFAOYSA-N [2-(hydroxymethyl)-2-(prop-2-enoyloxymethyl)butyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(CC)COC(=O)C=C TUOBEAZXHLTYLF-UHFFFAOYSA-N 0.000 description 1
- JUDXBRVLWDGRBC-UHFFFAOYSA-N [2-(hydroxymethyl)-3-(2-methylprop-2-enoyloxy)-2-(2-methylprop-2-enoyloxymethyl)propyl] 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC(CO)(COC(=O)C(C)=C)COC(=O)C(C)=C JUDXBRVLWDGRBC-UHFFFAOYSA-N 0.000 description 1
- HVVWZTWDBSEWIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C HVVWZTWDBSEWIH-UHFFFAOYSA-N 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- OIWOHHBRDFKZNC-UHFFFAOYSA-N cyclohexyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC1CCCCC1 OIWOHHBRDFKZNC-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- MHCLJIVVJQQNKQ-UHFFFAOYSA-N ethyl carbamate;2-methylprop-2-enoic acid Chemical compound CCOC(N)=O.CC(=C)C(O)=O MHCLJIVVJQQNKQ-UHFFFAOYSA-N 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- LNCPIMCVTKXXOY-UHFFFAOYSA-N hexyl 2-methylprop-2-enoate Chemical compound CCCCCCOC(=O)C(C)=C LNCPIMCVTKXXOY-UHFFFAOYSA-N 0.000 description 1
- NPZTUJOABDZTLV-UHFFFAOYSA-N hydroxybenzotriazole Substances O=C1C=CC=C2NNN=C12 NPZTUJOABDZTLV-UHFFFAOYSA-N 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- CDOSHBSSFJOMGT-UHFFFAOYSA-N linalool Chemical compound CC(C)=CCCC(C)(O)C=C CDOSHBSSFJOMGT-UHFFFAOYSA-N 0.000 description 1
- 229940095102 methyl benzoate Drugs 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- AZQWKYJCGOJGHM-UHFFFAOYSA-N para-benzoquinone Natural products O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 1
- FRGPKMWIYVTFIQ-UHFFFAOYSA-N triethoxy(3-isocyanatopropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCN=C=O FRGPKMWIYVTFIQ-UHFFFAOYSA-N 0.000 description 1
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 1
- 229940096522 trimethylolpropane triacrylate Drugs 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- C09J7/0217—
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
Abstract
본 발명은 광학투명접착제(OCA)에 부착되어 피접착물로부터 OCA를 제거하는 점착필름 및 이의 제조방법에 관한 기술로서, 기재 상에, 아크릴레이트계 베이스 수지, 실란계 커플링제, 다관능성 가교제, 및 첨가제를 포함하는 점착 조성물로 이루어진 점착층이 형성된 구조이다. 폐 터치스크린의 커버글라스 등에 잔류하는 OCA를 본 발명의 점착필름으로 전이시켜 깔끔하게 제거할 수 있을 뿐만 아니라 피착체인 커버글라스의 손상도 방지될 수 있기 때문에 폐 터치스크린의 재활용을 활성화시키는데 매우 효과적이다. The present invention relates to a pressure-sensitive adhesive film which is adhered to an optical transparent adhesive (OCA) to remove OCA from an adherend and a method for producing the same, and is characterized in that on the base material, an acrylate base resin, a silane-based coupling agent, And a pressure-sensitive adhesive layer comprising a pressure-sensitive adhesive composition containing an additive. The OCA remaining on the cover glass of the lung touch screen can be transferred to the pressure sensitive adhesive film of the present invention to be cleanly removed, and the damage of the cover glass as the cover can be prevented, which is very effective in activating the recycling of the waste touch screen.
Description
본 발명은 광학투명접착제 제거용 점착필름, 이의 제조방법 및 이를 이용한 터치스크린의 광학투명접착제 제거방법에 관한 것이다.
The present invention relates to a pressure-sensitive adhesive film for removing an optical transparent adhesive, a method for producing the same, and a method for removing an optical transparent adhesive on a touch screen using the same.
휴대폰 터치 스크린 시장이 성장함에 따라 휴대폰 윈도우 글래스와 터치 스크린 패널 센서 글래스 사이에 사용되는 점착제 재료에 관심이 높아지고 있다. 통상적인 터치 스크린 구조를 가지는 터치 스크린 패널(TSP: Touch Screen Panel)에서 감지 전극이 형성된 필름층과 커버 렌즈는 OCA (optically clear adhesive film) 투명 접착층에 의해 라미네이션 공정 등을 적용하여 서로 부착된다.As the mobile phone touchscreen market grows, interest in adhesive materials used between mobile phone window glass and touchscreen panel sensor glasses is increasing. In a touch screen panel (TSP) having a conventional touch screen structure, the film layer and the cover lens having the sensing electrodes formed thereon are attached to each other by applying a lamination process or the like using a transparent adhesive layer of OCA (optically clear adhesive film).
그러나, 합착 과정에서 기포가 생기거나 이물질을 포함, 합착 위치불량 등 다양한 합착 불량이 발생하게 된다. 제품에 따라 다소 그 수치가 다르지만 대략 20% 이상의 합착 불량이 발생하고 있는 것으로 업계에서는 추산하고 있다.However, various kinds of adhesion failures such as bubbles, foreign matters, defective bonding position, etc. occur during the cementation process. The industry estimates that there are more than 20% of loosely welded joints, although the figures vary somewhat depending on the product.
따라서, 터치스크린 패널 제조사들은 고가의 프론트 윈도우(예, 강화유리), ITO, FPCB 부품을 재생하는 것에 관심을 쏟고 있다. Accordingly, touch screen panel manufacturers are interested in playing expensive front windows (eg, tempered glass), ITO, and FPCB components.
제품에 따라 합착 방법이 다소 상이하지만, 프론트 윈도우와 ITO 패턴필름을 합착하기 위한 광학투명접착제는 접착성이 매우 강하여 합착 후에는 분리가 매우 어렵고, 분리한다고 하더라도 윈도우 면이나 ITO 필름면에 남아 있는 광학투명접착제를 제거하는 것이 매우 어려운 실정이다.
Although the bonding method is somewhat different depending on the product, the optical transparent adhesive for bonding the front window and the ITO pattern film has a very strong adhesive property, so that it is very difficult to separate after the adhesion, It is very difficult to remove the transparent adhesive.
본 발명의 목적은 폐 터치스크린 재생공정 중 커버글라스 표면의 광학투명접착제(OCA)를 효과적으로 제거할 수 있는 광학투명접착제 제거용 점착필름을 제공하는 것이다.An object of the present invention is to provide an adhesive film for removing an optical transparent adhesive which can effectively remove an optical transparent adhesive (OCA) on the surface of a cover glass during a closed touch screen reproducing process.
본 발명의 또 다른 목적은 광학투명접착제 제거용 점착필름의 제조방법을 제공하는 것이다. It is still another object of the present invention to provide a method for producing an adhesive film for removing an optical transparent adhesive.
본 발명의 또 다른 목적은 광학투명접착제 제거용 점착필름을 이용하여 터치스크린으로부터 광학투명접착제를 제거하는 방법을 제공하는 것이다.
It is still another object of the present invention to provide a method for removing an optical transparent adhesive from a touch screen using an adhesive film for removing an optical transparent adhesive.
본 발명의 일 측면은 광학투명접착제(OCA)에 부착되어 피접착물로부터 OCA를 제거하는 광학투명접착제 제거용 점착필름에 관한 것이다. One aspect of the present invention relates to an adhesive film for removing an optical transparent adhesive which is attached to an optical transparent adhesive (OCA) to remove OCA from an adherend.
일 예에서, 기재 상에, 아크릴레이트계 베이스 수지 100중량부에 대하여 실란계 커플링제 0.01~3 중량부; 다관능성 가교제 0.005~10 중량부; 및 잔류량의 첨가제;를 포함하는 점착 조성물로 이루어진 점착층이 형성될 수 있다. In one example, 0.01 to 3 parts by weight of a silane-based coupling agent is added to 100 parts by weight of an acrylate base resin; 0.005 to 10 parts by weight of a polyfunctional crosslinking agent; And an additive of a residual amount can be formed on the pressure-sensitive adhesive layer.
일 예에서, 상기 아크릴레이트계 베이스 수지는 25℃에서의 점도가 2000 cps 내지 7000 cps일 수 있다. In one example, the acrylate base resin may have a viscosity at 25 DEG C of from 2000 cps to 7000 cps.
일 예에서, 상기 점착 조성물은 25℃에서의 점도가 2500 cps 내지4500 cps일 수 있다. In one example, the adhesive composition may have a viscosity at 25 占 폚 of 2500 cps to 4500 cps.
일 예에서, 상기 점착층의 두께는 50~300㎛일 수 있다. In one example, the thickness of the adhesive layer may be 50 to 300 mu m.
일 예에서, 상기 광학투명접착제 제거용 점착필름의 인장강도는 0.6~2MPa이고, 연신율은 800 ~ 1500%일 수 있다. In one example, the tensile strength of the pressure-sensitive adhesive film for removing an optical transparent adhesive may be 0.6 to 2 MPa and the elongation may be 800 to 1500%.
일 예에서, 상기 피접착물은 폐터치스크린일 수 있다. In one example, the adherend may be a closed touch screen.
본 발명의 또 다른 측면은 하기 단계들을 포함하는 광학투명접착제 제거용 점착필름의 제조방법이다. Another aspect of the present invention is a method for producing an adhesive film for removing an optical transparent adhesive comprising the steps of:
무용매 자외선 경화가능한 아크릴레이트계 수지 및 광중합 개시제를 혼합한 후 전부 또는 일부 광중합하여 아크릴레이트계 베이스 수지를 얻는 단계; A solvent-free ultraviolet curable acrylate resin and a photopolymerization initiator, followed by photopolymerization in whole or in part to obtain an acrylate based resin;
상기 얻은 아크릴레이트계 베이스수지; 다관능성 가교제; 실란계 커플링제; 광중합 개시제; 및 가소제, 자외선 흡수제, 소포제, 산화 방지제, 조색제, 충진제, 계면활성제, 및 이들의 혼합물 중 선택된 1종 이상의 첨가제;를 혼합하여 점착 조성물을 얻는 단계; The obtained acrylate base resin; Multifunctional crosslinking agents; Silane coupling agents; A photopolymerization initiator; And at least one additive selected from a plasticizer, an ultraviolet absorber, a defoaming agent, an antioxidant, a colorant, a filler, a surfactant, and a mixture thereof;
제1 기재 상에 상기 얻은 점착 조성물을 도포한 후 자외선 경화하는 경화단계; A curing step of applying the obtained pressure-sensitive adhesive composition on a first base material and ultraviolet curing the same;
일 예에서, 상기 경화단계 후 제1 기재와 부착되지 않은 면에 이형처리된 제2 기재를 부착하는 단계;를 더욱 포함할 수 있다. In one example, after the curing step, a step of attaching a release-treated second base material to the first base material and the non-attached surface may be further included.
일 예에서, 상기 무용매 자외선 경화가능한 아크릴레이트계 수지는, 메틸메타 메틸메타 아크릴레이트, 우레탄 아크릴레이트, 에폭시 아크릴레이트, 실리콘 아크릴레이트, 에틸헥실 아크릴레이트, 부틸 아크릴레이트, 에틸 아크릴레이트, 이소보닐 아크릴레이트, 사이클로 헥실 메타아크릴레이트, 글리시딜 메타아크릴레이트, 글리시딜 아크릴레이트, 베헤닐 아크릴레이트, 에틸아크릴레이트, 라우릴 아크릴레이트, 스테아릴 아크릴레이트, 아크릴산, 하이드록시 에틸 아크릴레이트, 하이드록시 부틸 아크릴레이트, 하이드록시 에틸메타 아크릴레이트, 페녹시 아크릴레이트, 메틸아크릴레이트, 헥산디올다이아크릴레이트 및 이들의 혼합물 중 선택된 1종 이상일 수 있다. In one example, the solvent-free ultraviolet curable acrylate resin is at least one member selected from the group consisting of methylmethacrylate, methyl methacrylate, urethane acrylate, epoxy acrylate, silicone acrylate, ethylhexyl acrylate, butyl acrylate, ethyl acrylate, isobornyl Acrylate, cyclohexyl methacrylate, glycidyl methacrylate, glycidyl acrylate, behenyl acrylate, ethyl acrylate, lauryl acrylate, stearyl acrylate, acrylic acid, hydroxyethyl acrylate, Hydroxyethyl methacrylate, phenoxy acrylate, methyl acrylate, hexanediol diacrylate, and mixtures thereof. [0033] The term " anionic surfactant "
일 예에서, 상기 광중합 개시제는 벤조페논, N,N'-테트라메틸-4,4'-디아미노벤조페논(미힐러케톤), N,N'-테트라에틸-4,4'-디아미노벤조페논, 4-메톡시-4'-디메틸아미노벤조페논, 2-벤질-2-디메틸아미노-1-(4-몰포리노페닐)-부타논-1,2,2-디메톡시-1,2-디페닐에탄-1-온, 1-히드록시-시클로헥실-페닐-케톤, 2-메틸-1-(4-(메틸티오)페닐)-2-몰포리노프로파논-1,2,4-디에틸티옥산톤, 2-에틸안트라퀴논 및 페난트렌퀴논 등의 방향족 케톤, 벤조인메틸에테르, 벤조인에틸에테르 및 벤조인페닐에테르 등의 벤조인에테르, 메틸벤조인 및 에틸벤조인 등의 벤조인, 벤질디메틸케탈 등의 벤질 유도체, 2-(o-클로로페닐)-4,5-디페닐이미다졸 이량체, 2-(o-클로로페닐)-4,5-디(m-메톡시페닐)이미다졸 이량체, 2-(o-플루오로페닐)-4,5-페닐이미다졸 이량체, 2-(o-메톡시페닐)-4,5-디페닐이미다졸 이량체, 2-(p-메톡시페닐)-4,5-디페닐이미다졸 이량체, 2,4-디(p-메톡시페닐)-5-페닐이미다졸 이량체 및 2-(2,4-디메톡시페닐)-4,5-디페닐이미다졸 이량체 등의 2,4,5-트리아릴이미다졸 이량체, 9-페닐아크리딘 및 1,7-비스(9,9'-아크리디닐)헵탄 등의 아크리딘 유도체, 비스(2,6-디메톡시벤조일)-2,4,4-트리메틸-펜틸포스핀옥사이드, 및 이들의 혼합물 중에서 선택된 1종 이상일 수 있다.In one example, the photopolymerization initiator is selected from the group consisting of benzophenone, N, N'-tetramethyl-4,4'-diaminobenzophenone (Michler's ketone), N, N'- Phenol, 4-methoxy-4'-dimethylaminobenzophenone, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) Methyl-1- (4- (methylthio) phenyl) -2-morpholinopropanone-1,2,4-di Benzoin ethers such as benzoin methyl ether, benzoin ethyl ether and benzoin phenyl ether, benzoin ethers such as methyl benzoin and ethyl benzoin, and benzoin ethers such as methyl benzoate and ethyl benzoin. , Benzyldimethyl ketal and the like, benzyl derivatives such as 2- (o-chlorophenyl) -4,5-diphenylimidazole dimer, 2- (o-chlorophenyl) -4,5-di (m- ) Imidazole dimer, 2- (o-fluorophenyl) -4,5-phenylimidazole dimer, 2- (o-methoxyphenyl) -4,5-diphenylimidazole dimer 2- (p-methoxyphenyl) -4,5-diphenylimidazole dimer, 2,4-di (p-methoxyphenyl) -5-phenylimidazole dimer and 2- , 4-dimethoxyphenyl) -4,5-diphenylimidazole dimer and the like, 2,4-triarylimidazole dimer, 9-phenylacridine and 1,7-bis (9, (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphosphine oxide, and a mixture thereof, may be used. .
일 예에서, 상기 무용매 자외선 경화가능한 아크릴레이트계 수지는 에틸헥실아크릴레이트(EHA) 30~60 중량부, 이소보닐 아크릴레이트(IBOA) 30~60 중량부, 2-히드록시에틸 아크릴레이트(HEA) 5~30 중량부의 3종일 수 있다. In one example, the solvent-free ultraviolet curable acrylate resin comprises 30 to 60 parts by weight of ethylhexyl acrylate (EHA), 30 to 60 parts by weight of isobornyl acrylate (IBOA), 2 to 30 parts by weight of 2-hydroxyethyl acrylate ) 5 to 30 parts by weight.
일 예에서, 상기 다관능성 가교제는 폴리엔계 모노머, 폴리티올계 모노머, 다관능 (메타) 아크릴레이트 및 이들의 혼합물 중 선택된 1종 이상이고, 아크릴레이트계 베이스 수지 100중량부에 대하여 다관능성 가교제 0.005~10 중량부를 첨가할 수 있다. In one example, the polyfunctional crosslinking agent is at least one selected from the group consisting of a polyene monomer, a polythiol monomer, a polyfunctional (meth) acrylate, and a mixture thereof, and a polyfunctional crosslinking agent 0.005 To 10 parts by weight may be added.
일 예에서, 상기 커플링제는 γ-글리시독시프로필트리메톡시 실란, γ-글리시독시프로필메틸디에톡시 실란, γ-글리시독시프로필트리에톡시 실란, 3-머캅토프로필트리메톡시 실란, 비닐트리메톡시 실란, 비닐트리에톡시 실란, γ-메타크릴록시프로필트리메톡시 실란, γ-메타크릴록시프로필트리에톡시 실란, γ-아미노프로필트리메톡시 실란, γ-아미노프로필트리에톡시 실란, 3-이소시아네이트프로필트리에톡시 실란 또는 γ-아세토아세테이트프로필트리메톡시 실란 및 이들의 혼합물 중 1종 이상이고, 아크릴레이트계 베이스 수지 100중량부에 대하여 커플링제 0.01~3 중량부를 첨가할 수 있다. In one example, the coupling agent is selected from the group consisting of? -Glycidoxypropyltrimethoxysilane,? -Glycidoxypropylmethyldiethoxysilane,? -Glycidoxypropyltriethoxysilane, 3-mercaptopropyltrimethoxysilane , Vinyltrimethoxysilane, vinyltriethoxysilane,? -Methacryloxypropyltrimethoxysilane,? -Methacryloxypropyltriethoxysilane,? -Aminopropyltrimethoxysilane,? -Aminopropyltriethoxysilane,? -Aminopropyltrimethoxysilane, Isocyanate propyltriethoxysilane,? -Acetoacetate propyltrimethoxysilane, and mixtures thereof, and 0.01 to 3 parts by weight of a coupling agent is added to 100 parts by weight of the acrylate base resin .
본 발명의 또 다른 일 측면은 하기 단계들을 포함하는 폐터치스크린의 OCA 제거방법이다. Another aspect of the present invention is a method for removing an OCA of a closed touch screen including the steps of:
광학투명접착제(OCA) 제거용 점착필름을 폐터치스크린의 커버글라스 표면에 잔류하는 OCA와 대면하도록 부착하는 단계; Attaching an adhesive film for optical transparent adhesive (OCA) so as to face OCA remaining on a cover glass surface of a closed touch screen;
1~5 kgf/cm 의 압력으로 합지한 후 상온에서 방치하는 단계; 및Lidding at a pressure of 1 to 5 kgf / cm and standing at room temperature; And
광학투명접착제(OCA) 제거용 점착필름을 잡아당겨 제거하는 단계.
A step of pulling out the adhesive film for optical transparent adhesive (OCA) removal.
본 발명에 따르면, 폐 터치스크린의 커버글라스 등에 잔류하는 OCA를 본 발명의 점착필름으로 전이시켜 깔끔하게 제거할 수 있을 뿐만 아니라 피착체인 커버글라스의 손상도 방지될 수 있기 때문에 폐 터치스크린의 재활용을 활성화시키는데 매우 효과적이다.
According to the present invention, the OCA remaining on the cover glass of the closed touch screen can be transferred to the adhesive film of the present invention to be cleanly removed, and also the damage of the cover glass as the adhesive can be prevented. It is very effective.
본 발명에서 사용되는 모든 기술용어는, 달리 정의되지 않는 이상, 하기의 정의를 가지며 본 발명의 관련 분야에서 통상의 당업자가 일반적으로 이해하는 바와 같은 의미에 부합된다. 또한 본 명세서에는 바람직한 방법이나 시료가 기재되나, 이와 유사하거나 동등한 것들도 본 발명의 범주에 포함된다. 본 명세서에 참고문헌으로 기재되는 모든 간행물의 내용은 본 발명에 도입된다. Unless defined otherwise, all technical terms used in the present invention have the following definitions and are consistent with the meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Also, preferred methods or samples are described in this specification, but similar or equivalent ones are also included in the scope of the present invention. The contents of all publications referred to herein are incorporated herein by reference.
용어 "약"이라는 것은 참조 양, 수준, 값, 수, 빈도, 퍼센트, 치수, 크기, 양, 중량 또는 길이에 대해 30, 25, 20, 25, 10, 9, 8, 7, 6, 5, 4, 3, 2 또는 1% 정도로 변하는 양, 수준, 값, 수, 빈도, 퍼센트, 치수, 크기, 양, 중량 또는 길이를 의미한다.The term "about" is used herein to refer to a reference quantity, a level, a value, a number, a frequency, a percent, a dimension, a size, a quantity, a weight, or a length of 30, 25, 20, 25, 10, 9, 8, 7, Level, value, number, frequency, percent, dimension, size, quantity, weight or length of a variable, such as 4, 3, 2 or 1%.
본 명세서를 통해, 문맥에서 달리 필요하지 않으면, "포함하다" 및 "포함하는"이란 말은 제시된 단계 또는 구성요소, 또는 단계 또는 구성요소들의 군을 포함하나, 임의의 다른 단계 또는 구성요소, 또는 단계 또는 구성요소들의 군이 배제되지는 않음을 내포하는 것으로 이해하여야 한다.
Throughout this specification, the words "comprises" and "comprising ", unless the context requires otherwise, include the steps or components, or groups of steps or elements, Steps, or groups of elements are not excluded.
광학투명접착제Optical transparent adhesive (( OCAOCA ) 제거용 점착필름) Adhesive film for removal
폐 터치스크린을 재생하는 공정에서 수득한 커버글라스에 광학투명접착제(OCA)가 부착된 피접착물, 예를 들어 폐 터치스크린의 커버글라스 표면으로부터 OCA를 제거하는 점착필름으로서, 기재; 및 상기 기재 상에 소정의 점착 조성물을 도포하여 형성된 점착층을 포함한다. An adhesive film for removing OCA from a surface of a cover glass of a closed touch screen, for example, an optical transparent adhesive (OCA) adhered to a cover glass obtained from a process for reproducing a closed touch screen, comprising: a substrate; And an adhesive layer formed by applying a predetermined adhesive composition on the substrate.
상기 기재는 OCA 점착층의 상부 및/또는 하부에 형성되어 점착층을 보호하기 위한 것으로서 공지의 플라스틱 기재필름이 제한없이 이용가능하며, 바람직하게는 에스테르, 에틸렌, 프로필렌, 디아세테이트, 트리아세테이트,스티렌,카보네이트, 메틸펜텐, 술폰, 에테르에틸케톤, 이미드, 불소, 나일론, 아크릴레이트, 및 지환족 올레핀계 중에서 선택된 1종 이상을 구성단위로 하는 폴리머 또는 공중합 폴리머일 수 있고, 더욱 바람직하게는 PET 이형필름을 이용할 수 있다. The base material is formed on the top and / or bottom of the OCA adhesive layer to protect the adhesive layer, and a known plastic base film can be used without limitation, and preferable examples include ester, ethylene, propylene, diacetate, triacetate, styrene , A polymer or a copolymer comprising at least one selected from the group consisting of a carbonate, a methylpentene, a sulfone, an ether ethyl ketone, an imide, a fluorine, a nylon, an acrylate and an alicyclic olefin as a constituent unit, A release film can be used.
상기 점착층은 점착 조성물을 도포한 후 경화하여 형성된 것으로서 상기 점착 조성물은 바람직하게는 아크릴레이트계 베이스 수지 100중량부에 대하여 실란계 커플링제 0.4~0.7 중량부; 다관능성 가교제 0.7~2.0 중량부; 및 잔류량의 첨가제를 포함한다. The adhesive layer is formed by applying a pressure-sensitive adhesive composition and then curing. The pressure-sensitive adhesive composition preferably comprises 0.4 to 0.7 parts by weight of a silane-based coupling agent per 100 parts by weight of an acrylate base resin; 0.7 to 2.0 parts by weight of a polyfunctional crosslinking agent; And residual amounts of additives.
상기 점착 조성물의 제1 성분인 아크릴레이트계 베이스 수지는 메틸메타 아크릴레이트, 우레탄 아크릴레이트, 에폭시 아크릴레이트, 실리콘 아크릴레이트, 에틸헥실 아크릴레이트, 부틸 아크릴레이트, 에틸 아크릴레이트, 이소보닐 아크릴레이트, 사이클로 헥실 메타아크릴레이트, 글리시딜 메타아크릴레이트, 글리시딜 아크릴레이트, 베헤닐 아크릴레이트, 에틸아크릴레이트, 라우릴 아크릴레이트, 스테아릴 아크릴레이트, 아크릴산, 하이드록시 에틸 아크릴레이트, 하이드록시 부틸 아크릴레이트, 하이드록시 에틸메타 아크릴레이트, 페녹시 아크릴레이트, 메틸아크릴레이트, 헥산디올다이아크릴레이트 및 이들의 혼합물 중 선택된 1종 이상을 혼합하여 선택할 수 있고, 인장강도 및 연신률이 우수한 수지 조성물을 선택하여 제거필름의 흡착력을 높일 수 있도록 무용매 자외선 경화 수지로서, 분자량은 50~300만인 아크릴계 고분자 수지 조성물을 사용하는 것이 바람직하다. The acrylate base resin which is the first component of the pressure-sensitive adhesive composition is at least one selected from the group consisting of methyl methacrylate, urethane acrylate, epoxy acrylate, silicone acrylate, ethylhexyl acrylate, butyl acrylate, ethyl acrylate, isobornyl acrylate, Acrylates such as hexyl methacrylate, glycidyl methacrylate, glycidyl acrylate, behenyl acrylate, ethyl acrylate, lauryl acrylate, stearyl acrylate, acrylic acid, hydroxyethyl acrylate, hydroxybutyl acrylate , Hydroxyethyl methacrylate, phenoxy acrylate, methyl acrylate, hexanediol diacrylate, and mixtures thereof, and a resin composition having excellent tensile strength and elongation can be selected and removed High adsorption power of film Be a solvent-free ultraviolet curing resin so that a molecular weight of 50 to 300 are all people it is preferable to use the acrylic polymer resin composition.
바람직한 일 예에서, 상기 아크릴레이트계 베이스 수지는 광중합에 의해 부분경화 또는 완전 경화된 수지일 수 있고, 더욱 바람직하게는 상기 아크릴레이트계 베이스 수지는 25℃에서의 점도가 2000 cps 내지 7000 cps, 특히 바람직하게는 2500 cps 내지 4500 cps일 수 있다. 점도가 2500cps 미만이면 필름 코팅시 시럽이 흐를수 있으며, 4500cps 초과시 코팅 성능이 좋지 않을 수 있다.In a preferred example, the acrylate base resin may be a partially cured or fully cured resin by photopolymerization, more preferably the acrylate base resin has a viscosity at 25 DEG C of from 2000 cps to 7000 cps, And preferably from 2500 cps to 4500 cps. If the viscosity is less than 2500 cps, the syrup may flow during the film coating, and when the viscosity exceeds 4500 cps, the coating performance may be poor.
상기 점착 조성물의 제2 성분인 실란계 커플링제는 필름의 흡착성 및 밀착성을 향상시켜 OCA 잔류물을 효과적으로 제거할 수 있다. 상기 실란계 커플링제는 예를 들어,γ-글리시독시프로필트리메톡시 실란, γ-글리시독시프로필메틸디에톡시 실란, γ-글리시독시프로필트리에톡시 실란, 3-머캅토프로필트리메톡시 실란, 비닐트리메톡시 실란, 비닐트리에톡시 실란, γ-메타크릴록시프로필트리메톡시 실란, γ-메타크릴록시프로필트리에톡시 실란, γ-아미노프로필트리메톡시 실란, γ-아미노프로필트리에톡시 실란, 3-이소시아네이트프로필트리에톡시 실란 또는 γ-아세토아세테이트프로필트리메톡시 실란 중 1종 이상일 수 있다. The silane-based coupling agent, which is the second component of the pressure-sensitive adhesive composition, can improve the adsorptivity and adhesion of the film, thereby effectively removing the OCA residue. The silane-based coupling agent includes, for example,? -Glycidoxypropyltrimethoxysilane,? -Glycidoxypropylmethyldiethoxysilane,? -Glycidoxypropyltriethoxysilane, 3-mercaptopropyltrimethoxysilane, Vinyltrimethoxysilane, vinyltrimethoxysilane, vinyltrimethoxysilane, vinyltrimethoxysilane, vinyltrimethoxysilane, vinyltrimethoxysilane, vinyltrimethoxysilane, vinyltrimethoxysilane, vinyltrimethoxysilane, vinyltrimethoxysilane, vinyltrimethoxysilane, vinyltrimethoxysilane, vinyltrimethoxysilane, vinyltrimethoxysilane, vinyltrimethoxysilane, vinyltrimethoxysilane, Triethoxysilane, 3-isocyanatopropyltriethoxysilane, or gamma-acetoacetate propyltrimethoxysilane.
상기 실란계 커플링제의 첨가량은 아크릴레이트계 베이스 수지 100중량부에 대하여 0.01~3 중량부, 바람직하게는 0.4~0.7중량부일 수 있다. 0.4중량부 미만이 첨가되면 흡착성 및 밀착성 향상의 효과를 볼 수 없으며, 0.7중량부 초과하여 들어가면 오히려 흡착성과 밀착성이 떨어질 수 있다.The addition amount of the silane coupling agent may be 0.01 to 3 parts by weight, preferably 0.4 to 0.7 parts by weight based on 100 parts by weight of the acrylate base resin. When the amount is less than 0.4 part by weight, the effect of improving the adsorptivity and adhesion can not be obtained. If the amount is more than 0.7 part by weight, adsorptivity and adhesiveness may be deteriorated.
상기 점착 조성물의 제3성분으로서 상기 다관능성 가교제는 점착층의 인장강도와 연신율 향상을 위한 요소로서 화합물 간의 가교도를 높이는 역할을 한다. 본 발명자들의 실험에 따르면, 단관능성 가교제를 이용하는 경우 OCA 제거능을 제대로 발휘할 수 없음을 확인하였다. 상기 다관능성 가교제는 예를 들어, 폴리엔계 모노머, 폴리티올계 모노머, 다관능 (메타) 아크릴레이트, 및 이들의 혼합물 중 1종 이상을 선택할 수 있다. 구체적 예로는, 트리알릴이소시아누레이트, 디아릴말레에이트, 트리메틸올프로판트리스-티오프로피오네이트, 디에틸렌글리콜디아크릴레이트, 트리에틸렌글리콜디아크릴레이트, 테트라에틸렌글리콜디아크릴레이트, 디에틸렌글리콜디메타크릴레이트, 트리에틸렌글리콜디메타크릴레이트, 테트라에틸렌글리콜디메타크릴레이트, 트리메티롤프로판디아크릴레이트, 트리메티롤프로판트리아크릴레이트, 트리메티롤프로판디메타크릴레이트, 트리메티롤프로판트리메타크릴레이트, 1,4-부탄디올디아크릴레이트, 1,6-헥산디올디아크릴레이트, 1,4-부탄디올디메타크릴레이트,1,6-헥산디올디메타크릴레이트, 펜타에리스리톨트리아크릴레이트, 펜타에리스리톨테트라아크릴레이트, 펜타에리스리톨트리메타크릴레이트, 펜타에리스리톨테트라메타크릴레이트, 디펜타에리스리톨헥사아크릴레이트, 디펜타에리스리톨헥사메타크릴레이트, 트리스(β-히드록시에틸)이소시아누레이트의 트리아크릴레이트, 우레탄아크릴레이트 또는 우레탄메타크릴레이트, 요소아크릴레이트 및 이들의 혼합물 중 1종 이상 선택할 수 있다. As the third component of the pressure-sensitive adhesive composition, the polyfunctional crosslinking agent acts as an element for improving the tensile strength and elongation of the pressure-sensitive adhesive layer and enhances the degree of crosslinking between the compounds. According to the experiments conducted by the present inventors, it was confirmed that OCA elimination ability can not be exerted when a monofunctional crosslinking agent is used. The polyfunctional crosslinking agent may be selected from, for example, at least one of a polyene monomer, a polythiol monomer, a polyfunctional (meth) acrylate, and a mixture thereof. Specific examples thereof include triallyl isocyanurate, diaryl maleate, trimethylolpropane tris-thiopropionate, diethylene glycol diacrylate, triethylene glycol diacrylate, tetraethylene glycol diacrylate, diethylene glycol Dimethacrylate, triethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate, trimethylol propane diacrylate, trimethylol propane triacrylate, trimethylol propane dimethacrylate, trimethylol propane Butanediol diacrylate, 1,6-hexanediol diacrylate, 1,4-butanediol dimethacrylate, 1,6-hexanediol dimethacrylate, pentaerythritol triacrylate , Pentaerythritol tetraacrylate, pentaerythritol trimethacrylate, pentaerythritol tetramethacrylate, Triacrylate, urethane acrylate or urethane methacrylate, urea acrylate, and urea acrylate of tris (? -Hydroxyethyl) isocyanurate, dipentaerythritol hexaacrylate, dipentaerythritol hexaacrylate, dipentaerythritol hexaacrylate, You can choose more than one species.
상기 다관능성 가교제의 양을 조절하여 필름의 인장강도 및 연신율 조절할수 있으며, 아크릴레이트계 베이스 수지 100중량부에 대하여 다관능성 가교제는 0.005~10 중량부가 사용되며, 바람직하게는 0.7~2.0중량부가 사용된다. 0.7중량부 미만이 첨가되면 인장강도 및 연신율 향상의 효과를 볼 수 없으며, 2.0중량부 초과하여 들어가면 오히려 인장강도 및 연신율이 떨어질 수 있다.The tensile strength and elongation of the film may be controlled by adjusting the amount of the polyfunctional crosslinking agent. The polyfunctional crosslinking agent is used in an amount of 0.005 to 10 parts by weight, preferably 0.7 to 2.0 parts by weight, based on 100 parts by weight of the acrylate based resin. do. If less than 0.7 part by weight is added, the effect of improving the tensile strength and elongation can not be obtained, and if it exceeds 2.0 parts by weight, the tensile strength and elongation may be lowered.
필요에 따라, 본 발명의 점착 조성물에는 가소제, 자외선 흡수제, 소포제, 산화 방지제, 조색제, 충진제, 계면활성제, 및 이들의 혼합물 중 선택된 1종 이상의 첨가제를 더욱 포함할 수 있다. If necessary, the pressure-sensitive adhesive composition of the present invention may further contain at least one additive selected from a plasticizer, an ultraviolet absorber, a defoamer, an antioxidant, a colorant, a filler, a surfactant, and a mixture thereof.
상기 자외선 흡수제는 점착 조성물의 광적 안정성을 향상시키는 역할을 하는 것이다. 자예를 들어, 벤조트리아졸계, 벤조페논계 및 트리아진계로 이루어진 군으로부터 선택되는 1종 이상을 포함할 수 있지만, 이들에 제한되는 것은 아니다. 바람직하게는, 히드록시페닐 벤조트리아졸계의 자외선 흡수제를 사용할 수 있다. 예를 들면, 자외선 흡수제는 3-(2H-벤조트리아졸-2-일)-5-(1,1-디메틸에틸)4-히드록시벤젠 프로판산의 탄소수 7개-9개의 선형 또는 분지형 알킬 에스테르, 2-(벤조트리아졸-2-일)-4-(2,4,4-트리메틸펜탄-2-일)페놀, 2-(2'-히드록시-5'-메틸페닐)벤조트리아졸, 2-[2'-히드록시-3',5'-비스(α,α-디메틸벤질)페닐]벤조트리아졸, 2-(2'-히드록시-3',5'-디-t-부틸페닐)벤조트리아졸, 2,4-히드록시벤조페논, 2,4-히드록시-4-메톡시벤조페논, 2,4-히드록시-4-메톡시벤조페논-5-술폰산, 2,4-디페닐-6-(2-히드록시-4-메톡시페닐)-1,3,5-트리아진, 2,4-디페닐-6-(2-히드록시-4-에톡시페닐)-1,3,5-트리아진, 2,4-디페닐-6-(2-히드록시-4-프로폭시페닐)-1,3,5-트리아진 또는 2,4-디페닐-6-(2-히드록시-4-부톡시페닐)-1,3,5-트리아진 등을 사용할 수 있다.The ultraviolet absorber serves to improve the photostability of the adhesive composition. And may include, for example, at least one selected from the group consisting of benzotriazole, benzophenone and triazine, but is not limited thereto. Preferably, a hydroxyphenylbenzotriazole-based ultraviolet absorber can be used. For example, the ultraviolet absorber may be selected from the group consisting of 7 to 9 linear or branched alkyl (meth) acrylates of 3- (2H-benzotriazol-2-yl) -5- (1,1-dimethylethyl) 4- Esters, 2- (benzotriazol-2-yl) -4- (2,4,4-trimethylpentan-2-yl) phenol, 2- (2'- 2- [2'-hydroxy-3 ', 5'-di-t-butyl (2'-hydroxybenzotriazole) Phenyl) benzotriazole, 2,4-hydroxybenzophenone, 2,4-hydroxy-4-methoxybenzophenone, 2,4-hydroxy-4-methoxybenzophenone- (2-hydroxy-4-methoxyphenyl) -1,3,5-triazine, 2,4-diphenyl-6- 1,3,5-triazine, 2,4-diphenyl-6- (2-hydroxy-4-propoxyphenyl) 2-hydroxy-4-butoxyphenyl) -1,3,5-triazine, and the like.
자외선 흡수제는 점착 조성물의 첨가량은 아크릴레이트계 베이스 수지 100중량부에 대하여 0.001~1 중량부가 바람직하다. 상기 범위 내에서 경화후 필름의 표면의 황변을 방지할수 있다.The ultraviolet absorber is preferably added in an amount of 0.001 to 1 part by weight per 100 parts by weight of the acrylate base resin. Within the above range, the yellowing of the surface of the film after curing can be prevented.
상기 산화 방지제는 점착 조성물의 산화를 방지하여 열적 안정성을 향상시키는 역할을 하는 것이다. 예를 들어, 페놀계 화합물, 퀴논계 화합물, 아민계 화합물 및 포스파이트계 화합물로 이루어진 군으로부터 선택되는 1종 이상을 포함할 수 있지만, 이들에 제한되는 것은 아니다. 예를 들면, 산화 방지제는 펜타에리쓰리톨 테트라키스(3-(3,5-디-터트-부틸-4-히드록시페닐)프로피오네이트), 트리스(2,4-디-터트-부틸페닐)포스파이트 등을 들 수 있다.The antioxidant serves to prevent oxidation of the adhesive composition and to improve thermal stability. For example, at least one selected from the group consisting of a phenol compound, a quinone compound, an amine compound and a phosphite compound, but is not limited thereto. Examples of the antioxidant include pentaerythritol tetrakis (3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate), tris (2,4- ) Phosphite, and the like.
상기 산화 방지제는 아크릴레이트계 베이스 수지 100중량부에 대하여 0.001~1 중량부가 바람직하다. 상기 범위 내에서 경화 후 필름의 경시를 방지하며, 우수한 열 안정성을 나타낸다.
The antioxidant is preferably 0.001 to 1 part by weight based on 100 parts by weight of the acrylate base resin. Within the above range, the film after curing is prevented from being aged and exhibits excellent thermal stability.
상기 점착 조성물은 25℃에서의 점도가 2000 cps 내지 7000 cps, 바람직하게는 4000 cps 내지4500 cps일 수 있다. 조성물의 점도를 상기 범위 내에서 제어함으로써, 공정 효율성 및 경화 후의 물성을 효과적으로 유지할 수 있다. 조성물의 점도가 4000 cps 미만인 경우 도포성은 양호하나, 후막을 형성하기 용이하지 않을 수 있으며, 4500 cps를 초과하는 경우 점착제의 도포성이 불량하여 균일한 막을 형성하기 어렵다. The pressure-sensitive adhesive composition may have a viscosity at 25 DEG C of 2000 cps to 7000 cps, preferably 4000 cps to 4500 cps. By controlling the viscosity of the composition within the above range, process efficiency and physical properties after curing can be effectively maintained. When the viscosity of the composition is less than 4000 cps, the coating property is good, but it may not be easy to form a thick film. When the viscosity exceeds 4500 cps, the applicability of the pressure-sensitive adhesive is poor and it is difficult to form a uniform film.
상기 점착층의 두께는 100~300㎛ 인 것이 바람직하며 바람직하게는 150~200㎛ 실시한다. 100㎛ 미만시 필름의 인장강도와 연신률이 약하여 점착필름이 끊어지거나 찢어지며, 300㎛ 초과시 인장강도가 너무 강하여 피착체, 예를 들어 커버글라스가 깨질 우려가 높아진다. The thickness of the adhesive layer is preferably 100 to 300 mu m, and more preferably 150 to 200 mu m. When the thickness is less than 100 mu m, the tensile strength and the elongation of the film are low, so that the adhesive film breaks or tears. When the thickness exceeds 300 mu m, the tensile strength is too strong, and the adherend, for example, the cover glass is likely to be broken.
바람직한 일 예에서, 본 발명에 따른 광학투명접착제(OCA) 제거용 점착필름의 인장강도는 0.6~2MPa이고, 연신율은 800 ~ 1500%이다. 이와 같은 범위에서 점착필름의 흡착력이 우수하면서도 피착체의 손상을 최소화할 수 있기 때문에 본 발명의 점착필름을 폐터치스크린의 커버글라스 등과 같이 취급이 어려운 피착체에 대해서도 효과적으로 사용할 수 있다.
In a preferred embodiment, the adhesive film for optical transparent adhesive (OCA) according to the present invention has a tensile strength of 0.6 to 2 MPa and an elongation of 800 to 1500%. Since the adhesive force of the adhesive film is excellent in such a range and the damage of the adherend can be minimized, the adhesive film of the present invention can be effectively used for an adherend which is difficult to handle, such as a cover glass of a closed touch screen.
광학투명접착제Optical transparent adhesive (( OCAOCA ) 제거용 점착필름의 제조방법) ≪ / RTI >
본 발명의 일 관점에 있어서, 상술한 광학투명접착제(OCA) 제거용 점착필름의 제조방법으로서, 하기 단계들을 포함한다. In one aspect of the present invention, there is provided a process for producing the above-mentioned pressure-sensitive adhesive film for optical transparent adhesive (OCA) removal, comprising the following steps.
S1: 무용매 자외선 경화가능한 아크릴레이트계 수지 및 광중합 개시제를 혼합한 후 전부 또는 일부 광중합하여 아크릴레이트계 베이스 수지를 얻는 단계; S1 : a step of mixing an acrylate resin and a photopolymerization initiator which are free of ultraviolet rays and then photopolymerizing all or part of the mixture to obtain an acrylate base resin;
S2: 상기 얻은 아크릴레이트계 베이스 수지 및 상기 아크릴레이트계 베이스 수지 100중량부에 대하여 다관능성 가교제 0.7~2.0 중량부; 실란계 커플링제 0.4~0.7 중량부; 광중합 개시제; 및 가소제, 자외선 흡수제, 소포제, 산화 방지제, 조색제, 충진제, 계면활성제, 및 이들의 혼합물 중 선택된 1종 이상의 첨가제 0.01~1 중량부;를 혼합하여 점착 조성물을 얻는 단계; S2 : 0.7 to 2.0 parts by weight of a multifunctional crosslinking agent based on 100 parts by weight of the obtained acrylate base resin and the acrylate base resin; 0.4 to 0.7 parts by weight of a silane coupling agent; A photopolymerization initiator; And 0.01 to 1 part by weight of at least one additive selected from a plasticizer, an ultraviolet absorber, a defoaming agent, an antioxidant, a colorant, a filler, a surfactant, and a mixture thereof;
S3: 상기 얻은 점착 조성물을 제1 기재 상에 도포한 후 자외선 경화하는 점착필름 형성단계; S3 : an adhesive film-forming step of applying the obtained pressure-sensitive adhesive composition onto a first substrate and ultraviolet curing the same;
S4: 선택적으로, 상기 점착필름 형성단계 후 제1 기재와 부착되지 않은 면에 이형처리된 제2 기재를 부착하는 단계;
S4 : optionally, attaching a release-treated second base material to the unattached surface of the first base material after the adhesive film-forming step;
상기 아크릴레이트계 베이스 수지를 얻는 단계(S1)는 아크릴레이트계 수지 및 광중합 개시제를 혼합한 후 광경화를 통해 전부 또는 일부 경화된 수지를 얻는 단계이다. The step ( S1 ) of obtaining the acrylate base resin is a step of mixing the acrylate resin and the photopolymerization initiator and then curing the whole or part of the resin by photo-curing.
상기 무용매 자외선 경화가능한 아크릴레이트계 수지는 앞서 점착 조성물에서 설명한 바와 같으며, 바람직하게는 상기 무용매 자외선 경화가능한 아크릴레이트계 수지는 에틸헥실아크릴레이트(EHA) 30~60 중량부, 이소보닐 아크릴레이트(IBOA) 30~60 중량부, 2-히드록시에틸 아크릴레이트(HEA) 5~30 중량부의 3종일 수 있다. The solvent-free ultraviolet curable acrylate resin is as described above for the adhesive composition, and preferably the solventless ultraviolet curable acrylate resin is 30 to 60 parts by weight of ethylhexyl acrylate (EHA), 30 to 60 parts by weight of isobornyl acrylate (IBOA) of 30 to 60 parts by weight, and 2-hydroxyethyl acrylate (HEA) of 5 to 30 parts by weight.
상기 광중합 개시제는 자외선 조사시 이중 결합간의 큐어링(curing)을 유도하여 강도가 증진되고 접착력이 낮아지도록 하는 역할을 하며, 벤조페논, N,N'-테트라메틸-4,4'-디아미노벤조페논(미힐러케톤), N,N'-테트라에틸-4,4'-디아미노벤조페논, 4-메톡시-4'-디메틸아미노벤조페논, 2-벤질-2-디메틸아미노-1-(4-몰포리노페닐)-부타논-1,2,2-디메톡시-1,2-디페닐에탄-1-온, 1-히드록시-시클로헥실-페닐-케톤, 2-메틸-1-(4-(메틸티오)페닐)-2-몰포리노프로파논-1,2,4-디에틸티옥산톤, 2-에틸안트라퀴논 및 페난트렌퀴논 등의 방향족 케톤, 벤조인메틸에테르, 벤조인에틸에테르 및 벤조인페닐에테르 등의 벤조인에테르, 메틸벤조인 및 에틸벤조인 등의 벤조인, 벤질디메틸케탈 등의 벤질 유도체, 2-(o-클로로페닐)-4,5-디페닐이미다졸 이량체, 2-(o-클로로페닐)-4,5-디(m-메톡시페닐)이미다졸 이량체, 2-(o-플루오로페닐)-4,5-페닐이미다졸 이량체, 2-(o-메톡시페닐)-4,5-디페닐이미다졸 이량체, 2-(p-메톡시페닐)-4,5-디페닐이미다졸 이량체, 2,4-디(p-메톡시페닐)-5-페닐이미다졸 이량체 및 2-(2,4-디메톡시페닐)-4,5-디페닐이미다졸 이량체 등의 2,4,5-트리아릴이미다졸 이량체, 9-페닐아크리딘 및 1,7-비스(9,9'-아크리디닐)헵탄 등의 아크리딘 유도체, 비스(2,6-디메톡시벤조일)-2,4,4-트리메틸-펜틸포스핀옥사이드, 및 이들의 혼합물 중에서 선택된 1종 이상인 것이 바람직하다.The photopolymerization initiator induces curing between the double bonds upon irradiation with ultraviolet light, thereby enhancing the strength and lowering the adhesive force. In addition, benzophenone, N, N'-tetramethyl-4,4'-diaminobenzo N, N'-tetraethyl-4,4'-diaminobenzophenone, 4-methoxy-4'-dimethylaminobenzophenone, 2-benzyl- (4-morpholinophenyl) -butanone-1,2,2-dimethoxy-1,2-diphenylethan-1-one, 1 -hydroxy-cyclohexyl- Aromatic ketones such as 4- (methylthio) phenyl) -2-morpholinopropanone-1,2,4-diethylthioxanthone, 2-ethyl anthraquinone and phenanthrenequinone, benzoin methyl ether, benzoin ethyl Benzoin ethers such as ether and benzoin phenyl ether, benzoin such as methyl benzoin and ethyl benzoin, benzyl derivatives such as benzyl dimethyl ketal, 2- (o-chlorophenyl) -4,5-diphenylimidazole Dimer, 2- (o-chlorophenyl) -4,5-di (m-methoxyphenyl) (O-fluorophenyl) -4,5-phenylimidazole dimer, 2- (o-methoxyphenyl) -4,5-diphenylimidazole dimer, 2- (p-methoxyphenyl) -4,5-diphenylimidazole dimer, 2,4-di (p-methoxyphenyl) -5-phenylimidazole dimer and 2- (2,4- 2,4,5-triarylimidazole dimer, 9-phenylacridine and 1,7-bis (9,9'-arcs) such as diphenylimidazole dimer, (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphosphine oxide, and a mixture thereof.
상기 광중합 개시제의 양은 특별히 제한은 없지만 아크릴레이트계 베이스수지 100중량부에 대하여 0.01~1 중량부가 사용되는 것이 바람직하다.The amount of the photopolymerization initiator is not particularly limited, but is preferably 0.01 to 1 part by weight based on 100 parts by weight of the acrylate base resin.
상기 점착 조성물을 얻는 단계(S2)는 전단계(S1)에서 얻은 아크릴레이트계 베이스수지 및 상기 아크릴레이트계 베이스 수지 100중량부에 대하여 다관능성 가교제 0.7~2.0 중량부; 실란계 커플링제 0.4~0.7 중량부; 광중합 개시제; 및 가소제, 자외선 흡수제, 소포제, 산화 방지제, 조색제, 충진제, 계면활성제, 및 이들의 혼합물 중 선택된 1종 이상의 첨가제 0.01~1 중량부를 혼합한 후 광경화하여 점착 조성물을 얻는 단계이다. 상기 점착 조성물은 앞서 설명한 바와 같이, 25℃에서의 점도가 2000 cps 내지7000 cps, 바람직하게는 4000 cps 내지4500 cps이다. The step ( S2 ) of obtaining the pressure-sensitive adhesive composition comprises: 0.7 to 2.0 parts by weight of a multifunctional crosslinking agent based on 100 parts by weight of the acrylate base resin obtained in the previous step S1 and the acrylate base resin; 0.4 to 0.7 parts by weight of a silane coupling agent; A photopolymerization initiator; And 0.01 to 1 part by weight of at least one additive selected from the group consisting of a plasticizer, an ultraviolet absorber, a defoaming agent, an antioxidant, a colorant, a filler, a surfactant, and a mixture thereof and then photocuring the mixture to obtain a pressure-sensitive adhesive composition. As described above, the pressure-sensitive adhesive composition has a viscosity at 25 DEG C of 2000 cps to 7000 cps, preferably 4000 cps to 4500 cps.
상기 점착필름 형성단계(S3)는 상기 단계(S2)에서 얻은 점착 조성물을 제1 기재 상에 도포한 후 자외선 경화하여 필름을 형성하는 단계이다. In the adhesive film forming step ( S3 ), the adhesive composition obtained in the step ( S2 ) is coated on the first substrate and ultraviolet cured to form a film.
상기 도포 방법으로는 일반적으로 바코터를 이용하여 실시할 수 있고, 대량 생산시에는 콤마코팅이 바람직하며, 코팅 후에는 자외선 경화기를 이용하여 필름을 완전히 경화시키는 것이 바람직하다.The coating method can be generally carried out using a bar coater. In mass production, a comma coating is preferable. After coating, it is preferable to completely cure the film using an ultraviolet curing machine.
상기 제2 기재 부착단계(S4)는 선택적인 공정으로서, 상기 점착필름 형성단계(S3) 후 제1 기재와 부착되지 않은 면에 이형처리된 제2 기재를 부착하여 점착필름의 손상을 방지하고 보호하기 위한 단계이다.
The second substrate attaching step ( S4 ) is an optional step. After the adhesive film forming step ( S3 ), the second substrate subjected to the release treatment is attached to the surface not attached to the first substrate to prevent the adhesive film from being damaged .
폐터치스크린의Waste of the touch screen OCAOCA 제거방법 How to uninstall
본 발명의 또 다른 관점은 상기 광학투명접착제(OCA) 제거용 점착필름을 이용하여 폐 터치스크린의 OCA를 제거하는 방법이다. Another aspect of the present invention is a method for removing OCA of a closed touch screen using an adhesive film for removing the optical transparent adhesive (OCA).
폐 터치스크린 재생공정중 커버글라스 표면의 잔류한 OCA를 효과적으로 제거하기 위해 광학투명접착제(OCA) 제거용 점착필름을 OCA와 대면하도록 부착하고, 1~5 kgf/cm 의 압력으로 합지한 후 상온에서 방치한 후, 광학투명접착제(OCA) 제거용 점착필름을 잡아당겨 OCA를 간단히 제거할 수 있다. 상기 폐 터치스크린의 재생방법에 대한 보다 상세한 내용은 본 발명자들의 선등록특허인 제10-1404480호에 기재되어 있으며, 상기 특허의 내용은 참조로서 여기에 합체된다. In order to effectively remove the remaining OCA on the cover glass surface during the closed touch screen reproduction process, an adhesive film for removing optical transparent adhesive (OCA) was attached to face the OCA, laminated at a pressure of 1 to 5 kgf / cm, After leaving, the OCA can be easily removed by pulling the adhesive film for optical transparent adhesive (OCA) removal. The details of the method for regenerating the above-mentioned closed touch screen are disclosed in the above-mentioned Japanese Patent No. 10-1404480, the contents of which are incorporated herein by reference.
본 발명의 방법에 따르면 여타의 화학적 방법이나 장치를 사용할 필요가 없이 점착필름을 부착한 후 떼는 간단한 공정만으로 OCA를 본 발명의 점착필름으로 전이시켜 깔끔하게 제거할 수 있을 뿐만 아니라 커버글라스의 손상도 방지될 수 있기 때문에 폐 터치스크린의 재활용을 활성화시키는데 매우 효과적이다.
According to the method of the present invention, it is not necessary to use any other chemical method or device, and it is possible to cleanly remove OCA from the adhesive film of the present invention only by a simple process after detaching and attaching the adhesive film, Which is very effective in activating the recycling of the waste touch screen.
이하 본 발명을 실시예에 의하여 더욱 상세하게 설명한다. 이들 실시예는 단지 본 발명을 보다 구체적으로 설명하기 위한 것으로, 본 발명의 범위가 이들 실시예에 국한되지 않는다는 것은 당업계에서 통상의 지식을 가진 자에게 있어서 자명할 것이다.
Hereinafter, the present invention will be described in more detail with reference to Examples. It will be apparent to those skilled in the art that these embodiments are merely illustrative of the present invention and that the scope of the present invention is not limited to these embodiments.
[[ 제조예Manufacturing example 1] 부분 1] portion 광중합된Light-cured 아크릴레이트계Acrylate series 베이스 수지의 제조 Preparation of base resin
질소 가스가 환류되고, 광중합이 가능한 반응기에, 에틸헥실아크릴레이트(EHA) 60 중량부, 이소보닐 아크릴레이트(IBOA) 30중량부, 2-히드록시에틸 아크릴레이트(HEA)10 중량부를 혼합 후, 광중합 개시제로서 1-하이드록시-시클로 헥실 페닐케톤(BASF사제,이가큐어184) 을 0.5 중량부 넣고 30분간 광중합 후, 반응기에 산소를 주입하여 개시제를 불활성화시켜 반응을 종료한다. 이때 점도는 2500 cps인 베이스 수지를 얻었다. 이때 분자량은 100만이다.
60 parts by weight of ethylhexyl acrylate (EHA), 30 parts by weight of isobornyl acrylate (IBOA) and 10 parts by weight of 2-hydroxyethyl acrylate (HEA) were mixed in a reactor capable of nitrogen gas refluxing and photopolymerization, 0.5 part by weight of 1-hydroxy-cyclohexyl phenyl ketone (IGACURE 184, manufactured by BASF) as a photopolymerization initiator was added and photopolymerized for 30 minutes, oxygen was injected into the reactor to inactivate the initiator to terminate the reaction. At this time, a base resin having a viscosity of 2500 cps was obtained. At this time, the molecular weight is 1 million.
[[ 실시예Example 1] One]
상기 베이스 수지 100중량부에 대하여, 다관능성 가교제 1,4-부탄디올 디메타크릴레이트 0.5중량부, 실란계 커플링제 3-이소시아네이트프로필트리에톡시 실란 0.3 중량부, 광개시제 (BASF사제, 이가큐어 651) 0.5 중량부를 혼합하여 UV중합 후 수지 조성물을 제조하고 점도가 3500에서 4000 cps 수지 코팅액을 제조하였다. 제조된 코팅액을 이형처리된 75㎛ 두께 폴리에틸렌테레프탈레이트 (PET, 도레이) 필름에 수지 코팅액 150㎛ 되도록 코팅후 UV경화기를 이용하여 3분간 조사하여 경화시킨후 이형처리된 38㎛ 두께 폴리에틸렌테레프탈레이트 (PET, 도레이) 필름을 붙여 OCA 제거필름을 제조하였다.
0.5 part by weight of a multifunctional crosslinking agent, 1,4-butanediol dimethacrylate, 0.3 part by weight of a silane coupling agent, 3 parts by weight of isocyanate propyltriethoxysilane, 0.3 parts by weight of a photoinitiator (manufactured by BASF, Igakure 651) And 0.5 part by weight of the resin were mixed to prepare a resin composition after UV polymerization, and a resin coating liquid having a viscosity of 3500 to 4000 cps was prepared. The prepared coating solution was coated on a 75 占 퐉 thick polyethylene terephthalate (PET) film having a thickness of 150 占 퐉 as a resin coating liquid, and irradiated for 3 minutes using a UV curing machine to cure the coating solution. Then, 38 占 퐉 thick polyethylene terephthalate , Toray) film to prepare an OCA removing film.
[[ 실시예Example 2] 2]
상기 베이스 수지 100중량부에 대하여, 다관능성 가교제 1,4-부탄디올 디메타크릴레이트 1중량부, 실란계 커플링제 3-이소시아네이트프로필트리에톡시 실란 0.5 중량부, 광개시제 (BASF사제, 이가큐어 651) 0.5 중량부를 혼합하여 UV중합 후 수지 조성물을 제조하고 점도가 4000에서 4500 cps 수지 코팅액을 제조하였다. 제조된 코팅액을 이형처리된 75㎛ 두께 폴리에틸렌테레프탈레이트 (PET, 도레이) 필름에 수지 코팅액 150㎛ 되도록 코팅 후 UV경화기를 이용하여 3분간 조사하여 경화시킨후 이형처리된 38㎛ 두께 폴리에틸렌테레프탈레이트 (PET, 도레이) 필름을 붙여 OCA 제거필름을 제조하였다.
1 part by weight of a multifunctional crosslinking agent, 1,4-butanediol dimethacrylate, 0.5 part by weight of a silane coupling agent, 3-isocyanate propyltriethoxysilane, a photoinitiator (IGACURE 651, manufactured by BASF) And 0.5 part by weight of the resin were mixed to prepare a resin composition after UV polymerization, and a resin coating liquid having a viscosity of 4000 to 4500 cps was prepared. The prepared coating solution was coated on a 75 占 퐉 thick polyethylene terephthalate (PET) film having a thickness of 150 占 퐉 as a resin coating liquid, and irradiated for 3 minutes using a UV curing machine to cure the coating solution. Then, 38 占 퐉 thick polyethylene terephthalate , Toray) film to prepare an OCA removing film.
[[ 실시예Example 3] 3]
상기 베이스 수지 100중량부에 대하여, 다관능성 가교제 1,4-부탄디올 디메타크릴레이트 3중량부, 실란계 커플링제 3-이소시아네이트프로필트리에톡시 실란 1 중량부, 광개시제 (BASF사제, 이가큐어 651) 0.5 중량부를 혼합하여 UV중합 후 수지 조성물을 제조하고 점도가 4500에서 5000 cps 수지 코팅액을 제조하였다. 제조된 코팅액을 이형처리된 75㎛ 두께 폴리에틸렌테레프탈레이트 (PET, 도레이) 필름에 수지 코팅액 150㎛ 되도록 코팅후 UV경화기를 이용하여 3분간 조사하여 경화시킨후 이형처리된 38㎛ 두께 폴리에틸렌테레프탈레이트 (PET, 도레이) 필름을 붙여 OCA 제거필름을 제조하였다.
3 parts by weight of a multifunctional crosslinking agent, 1,4-butanediol dimethacrylate, 1 part by weight of a silane coupling agent, 3 parts by weight of isocyanate propyltriethoxysilane, 1 part by weight of a photoinitiator (manufactured by BASF, Igakure 651) And 0.5 part by weight of the resin were mixed to prepare a resin composition after UV polymerization, and a resin coating solution having a viscosity of 4500 to 5000 cps was prepared. The prepared coating solution was coated on a 75 占 퐉 thick polyethylene terephthalate (PET) film having a thickness of 150 占 퐉 as a resin coating liquid, and irradiated for 3 minutes using a UV curing machine to cure the coating solution. Then, 38 占 퐉 thick polyethylene terephthalate , Toray) film to prepare an OCA removing film.
[[ 비교예Comparative Example 1] One]
상기 베이스 수지 100중량부에 대하여, 단관능성 가교제 알킬 메타 아크릴레이트 1중량부, 광개시제 (BASF사제, 이가큐어 651) 0.5 중량부를 혼합하여 UV중합 후 수지 조성물을 제조하고 점도가 2500 cps 에서 3000 cps 수지 코팅액을 제조하였다. 제조된 코팅액을 이형처리된 75㎛ 두께 폴리에틸렌테레프탈레이트 (PET, 도레이) 필름에 수지 코팅액 150㎛ 되도록 코팅후 UV경화기를 이용하여 3분간 조사하여 경화 시킨후 이형처리된 38㎛ 두께 폴리에틸렌테레프탈레이트 (PET, 도레이) 필름을 붙여 OCA제거필름을 제조하였다.
1 part by weight of a monofunctional crosslinking agent alkyl methacrylate and 0.5 part by weight of a photo initiator (manufactured by BASF, IGACURE 651) were mixed with 100 parts by weight of the base resin to prepare a resin composition after UV polymerization and a viscosity of 2500 cps to 3000 cps To prepare a coating solution. The prepared coating solution was coated on a 75 占 퐉 thick polyethylene terephthalate (PET) film having a thickness of 150 占 퐉 as a resin coating liquid, and irradiated for 3 minutes using a UV curing machine to cure the coating solution. Then, 38 占 퐉 thick polyethylene terephthalate , Toray) film to prepare an OCA removing film.
[비교예2][Comparative Example 2]
3M사의 150㎛ 두께의 OCA 필름(3M 8146-150)을 구매하였다. An OCA film (3M 8146-150) of 150 m thickness of 3M was purchased.
[[ 실험예Experimental Example 1] One] 인장강도The tensile strength 및 And 연신율Elongation 측정 Measure
만능재료시험기 LLOYD INSTR㎛ENT사 LR30K PLUS 제품으로 측정하였고 그 결과를 하기 표 2에 나타내었다. The results are shown in Table 2 below. [Table 2] < tb > < tb > < tb >
실험결과 가교제와 커플링제를 이용하여 필름의 강도와 박리력 조절이 가능하였으며, 기존의 OCA 필름에서 볼수 없는 높은 인장강도를 볼 수 있었다. 실시예3의 경우 다관능성 가교제가 일정량이 초과되면 필름의 인장강도가 약했으며, 비교예 1의 경우 단관능성 가교제를 사용한 경우 인장강도가 다관능성 가교제를 사용할 때 보다 가교도가 낮아 필름의 강도가 약했으며, 비교예 2의 경우 일반적으로 시판된 OCA필름을 사용했으며 인장강도가 낮아 OCA 제거 필름으로 사용할 수 없다.
As a result of the experiment, it was possible to control the strength and peel strength of the film by using the crosslinking agent and the coupling agent, and the high tensile strength was not seen in the conventional OCA film. In case of Example 3, when the amount of the polyfunctional crosslinking agent exceeded a certain amount, the tensile strength of the film was weak. In Comparative Example 1, when the monofunctional crosslinking agent was used, the tensile strength was lower than that of the polyfunctional crosslinking agent, In case of Comparative Example 2, a commercially available OCA film is generally used and the tensile strength is low so that it can not be used as an OCA removing film.
[[ 실험예Experimental Example 2] 2] 박리력Peel force
OCA 제거필름을 SUS면에 부착하여, 무게 2kgf/cm 의 압력으로 합지 후, 30분간 상온에서 방치 하였다. 박리 속도는 300mm/min 및 25℃에서 기판에 대한 180도 박리력을 측정하였다. The OCA removal film was adhered to the SUS surface and lapped at a pressure of 2 kgf / cm and left at room temperature for 30 minutes. The peeling speed was 300 mm / min and the 180 degree peel force on the substrate was measured at 25 占 폚.
실험결과, 연신율이 높을수록 박리력이 높게 나타났으며 단관능성 가교제를 사용한 비교예 1의 경우 인장강도 뿐만 아니라 연신율도 낮게 나타남을 알 수 있었다.
As a result of the experiment, it was found that the higher the elongation, the higher the peeling force, and in Comparative Example 1 using the monofunctional crosslinking agent, the elongation was lower than the tensile strength.
[실험예 3] OCA 제거력 테스트[Experimental Example 3] OCA removal test
커버글라스에 OCA 제거 필름을 부착 후에 2kgf/cm 의 압력으로 합지 후 PET 이형필름을 제거 후 OCA 제거필름을 당겨 OCA를 제거한 후 제거력을 측정하였다.After attaching the OCA removal film to the cover glass, the PET release film was removed after laminating at a pressure of 2 kgf / cm, and then the OCA removal film was pulled to remove the OCA and then the removal force was measured.
상기 표3의 결과로부터, 다관능성 가교제를 사용하여 가교도를 높임으로써 필름의 인장강도 및 연신율이 높은 필름일수록 제거력이 좋으며, 비교예 1 비교예 2 와 같이 인장강도가 낮으면 커버글라스 합지 후 필름이 끊어지거나 찢어져 OCA제거 능력을 가질 수 없음을 알 수 있다.
From the results shown in the above Table 3, it can be seen that the film having a high tensile strength and elongation rate has a good removability by increasing the degree of crosslinking using a polyfunctional crosslinking agent, and when the tensile strength is low as in Comparative Example 1, It can be seen that it can not have OCA removal ability because it is broken or torn.
이제까지 본 발명에 대하여 그 바람직한 실시예들을 중심으로 살펴보았다. 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자는 본 발명이 본 발명의 본질적인 특성에서 벗어나지 않는 범위에서 변형된 형태로 구현될 수 있음을 이해할 수 있을 것이다. 그러므로 개시된 실시예들은 한정적인 관점이 아니라 설명적인 관점에서 고려되어야 한다. 본 발명의 범위는 전술한 설명이 아니라 특허청구범위에 나타나 있으며, 그와 동등한 범위 내에 있는 모든 차이점은 본 발명에 포함된 것으로 해석되어야 할 것이다.
The present invention has been described with reference to the preferred embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.
Claims (14)
기재 상에, 아크릴레이트계 베이스 수지 100중량부에 대하여 실란계 커플링제로서 3-이소시아네이트프로필트리에톡시 실란 0.4~0.7 중량부; 다관능성 가교제로서 1,4-부탄디올 디메타그릴레이트 0.7~2.0 중량부; 및 광중합 개시제 0.01~1 중량부;를 포함하는 점착 조성물로 이루어진 점착층이 형성된 것이며,
상기 점착 조성물은 25℃에서의 점도가 4000 cps 내지 4500 cps인 것을 특징으로 하는, 광학투명접착제(OCA) 제거용 점착필름.
An adhesive film attached to an optical transparent adhesive (OCA) to remove OCA from the adherend,
0.4 to 0.7 parts by weight of 3-isocyanate-propyltriethoxysilane as a silane-based coupling agent based on 100 parts by weight of an acrylate base resin; 0.7 to 2.0 parts by weight of 1,4-butanediol dimethacrylate as a polyfunctional crosslinking agent; And 0.01 to 1 part by weight of a photopolymerization initiator;
Wherein the pressure-sensitive adhesive composition has a viscosity at 25 DEG C of from 4000 cps to 4500 cps.
상기 아크릴레이트계 베이스 수지는 25℃에서의 점도가 2500 cps 내지 4500 cps인 것을 특징으로 하는, 광학투명접착제(OCA) 제거용 점착필름.
The method according to claim 1,
Wherein the acrylate base resin has a viscosity at 25 DEG C of from 2500 cps to 4500 cps.
박리력이 3320 gf/in 인 것을 특징으로 하는, 광학투명접착제(OCA) 제거용 점착필름.
The method according to claim 1,
And the peel strength is 3320 gf / in. The adhesive film for removing optical transparent adhesive (OCA)
상기 피접착물은 폐터치스크린인 것을 특징으로 하는, 광학투명접착제(OCA) 제거용 점착필름.
The method according to claim 1,
Wherein the object to be adhered is a closed touch screen.
무용매 자외선 경화가능한 아크릴레이트계 수지 및 광중합 개시제를 혼합한 후 전부 또는 일부 광중합하여 아크릴레이트계 베이스 수지를 얻는 단계;
상기 얻은 아크릴레이트계 베이스수지 및 상기 아크릴레이트계 베이스 수지 100중량부에 대하여 다관능성 가교제로서 1,4-부탄디올 디메타그릴레이트 0.7~2.0 중량부; 실란계 커플링제로서 3-이소시아네이트프로필트리에톡시 실란 0.4~0.7 중량부; 광중합 개시제 0.01~1 중량부; 및 가소제, 자외선 흡수제, 소포제, 산화 방지제, 조색제, 충진제, 계면활성제, 및 이들의 혼합물 중 선택된 1종 이상의 첨가제 0.001~1 중량부;를 혼합한 후 광중합하여 점착 조성물을 얻는 단계;
상기 얻은 점착 조성물을 제1 기재 상에 도포한 후 자외선 경화하는 점착필름 형성단계; 를 포함하고,
상기 점착 조성물은 25℃에서의 점도가 4000 cps 내지 4500 cps인 것을 특징으로 하는, 광학투명접착제(OCA) 제거용 점착필름의 제조방법.
A process for producing an adhesive film for removing optical transparent adhesive (OCA) according to any one of claims 1 to 3 and 6,
A solvent-free ultraviolet curable acrylate resin and a photopolymerization initiator, followed by photopolymerization in whole or in part to obtain an acrylate based resin;
0.7 to 2.0 parts by weight of 1,4-butanediol dimethacrylate as a multifunctional crosslinking agent based on 100 parts by weight of the obtained acrylate base resin and the acrylate base resin; 0.4 to 0.7 parts by weight of 3-isocyanate propyltriethoxysilane as a silane coupling agent; 0.01 to 1 part by weight of a photopolymerization initiator; And 0.001 to 1 part by weight of at least one additive selected from the group consisting of a plasticizer, an ultraviolet absorber, an antifoaming agent, an antioxidant, a colorant, a filler, a surfactant, and mixtures thereof, followed by photopolymerization to obtain a pressure sensitive adhesive composition;
An adhesive film forming step of applying the obtained pressure sensitive adhesive composition onto a first substrate and ultraviolet curing the adhesive film; Lt; / RTI >
Wherein the pressure-sensitive adhesive composition has a viscosity at 25 DEG C of from 4000 cps to 4500 cps.
A method for manufacturing an optical transparent adhesive (OCA), comprising the steps of: attaching an adhesive film for optical transparent adhesive (OCA) according to any one of claims 1 to 6 to face OCA remaining on a cover glass surface of a closed touch screen; Lidding at a pressure of 1 to 5 kgf / cm and standing at room temperature; And pulling out the adhesive film for removing the optical transparent adhesive (OCA) to remove the OCA.
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| KR102019713B1 (en) | 2015-12-30 | 2019-09-09 | 주식회사 엘지화학 | Re-work Tape |
| CN106947402A (en) * | 2016-01-06 | 2017-07-14 | 株式会社吉泰 | Optically clear adhesive removal adhesive film and preparation method thereof and the optically clear adhesive minimizing technology using its touch-screen |
| KR101785380B1 (en) * | 2016-04-12 | 2017-10-16 | 주식회사 테이팩스 | Adhesive Film |
| KR101929934B1 (en) * | 2017-02-09 | 2018-12-18 | (주)케이에프엠 | Tape for removal of optically clear adhesive on panel, method for preparing the same and method for separation and removal method of optically clear adhesive on panel using the tape |
| WO2018216949A1 (en) * | 2017-05-23 | 2018-11-29 | 한국생산기술연구원 | Glass adhesive residue removal device using adhesive film and glass adhesive residue removal method using same |
| KR101906805B1 (en) | 2017-06-23 | 2018-10-11 | (주)위드엘씨 | Adhesive film including inorganic filler for removing optical clear adhesives, method for preparing the same, and recycling method of touch screen panel using the same |
| CN109423239B (en) * | 2017-08-29 | 2022-04-22 | 维信诺科技股份有限公司 | Optical transparent adhesive, touch module and touch display device |
| CN109423239A (en) * | 2017-08-29 | 2019-03-05 | 黑牛食品股份有限公司 | Optical transparent adhesive, touch-control module and touch control display apparatus |
| CN107639916A (en) * | 2017-09-14 | 2018-01-30 | 深圳晶华显示器材有限公司 | The rework method of defective products after touch-screen is bonded entirely |
| KR20210028771A (en) | 2019-09-04 | 2021-03-15 | 이승현 | Adhesive sheet of label by differentiating discontinuously cohesiveness of layer |
| CN115386306A (en) * | 2022-08-15 | 2022-11-25 | 江苏皇冠新材料科技有限公司 | Optical cement, preparation method thereof and related product |
| CN117363241A (en) * | 2023-09-28 | 2024-01-09 | 昆山博益鑫成高分子材料有限公司 | UV (ultraviolet) adhesive-reducing tape and preparation method thereof |
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